DESC:FIELD OF INVENTION:
[0001] The present disclosure relates to agricultural equipment, and more particularly to an agricultural apparatus and method for performing multi-terrain cultivation operations using an electric motor-driven system with modular attachments.
BACKGROUND OF THE INVENTION:
[0002] The technical field pertains to agricultural machinery, specifically powered cultivators used for soil tillage and weeding. The conventional and most widely adopted technology in this field utilizes internal combustion engines as the primary power source. While capable of generating high power output, these engine-driven systems present a number of inherent technical and operational deficiencies that impact their efficiency, reliability, and usability in agricultural settings.
[0003] Cultivators powered by internal combustion engines are subject to several technical limitations. Mechanically, these engines require frequent maintenance schedules involving oil, filters, and spark plugs to maintain operational performance, leading to significant downtime. The combustion process itself generates substantial noise and vibration, which contributes to operator fatigue and can cause premature wear on mechanical components. Furthermore, these engines exhibit performance inconsistencies, including difficulty starting in cold weather and a dependency on flammable liquid fuels, which poses storage and handling challenges. The operational characteristics of combustion engines also result in the emission of gaseous pollutants.
[0004] Efforts to overcome the issues of combustion engines have led to the exploration of electric-powered cultivators. However, existing electric models in the market have demonstrated significant technical shortcomings that render them unsuitable for rigorous, multi-terrain agricultural use. These devices are typically engineered for light-duty gardening applications and, as a result, their powertrain and mechanical systems are not robust enough for professional farming. A primary technical failure is the insufficient torque delivery from their electric motors, which causes the machines to stall or perform ineffectively in challenging soil conditions such as dense clay or moist earth. Additionally, their structural designs often lack the durability required to withstand the mechanical stresses of continuous agricultural operations, leading to frequent component failure and a limited operational lifespan.
[0005] It has been appreciated that an agricultural apparatus is needed that overcomes one or more of these problems.

SUMMARY OF THE INVENTION:
[0006] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description.
[0007] In a first aspect, an agricultural apparatus for performing multi-terrain operations is provided. The apparatus comprises: a brushless DC (BLDC) motor configured to deliver rotational power along a longitudinal axis of the apparatus; a rechargeable battery pack electrically connected to the BLDC motor and configured to supply electrical power thereto; a gear transmission system mechanically coupled to the BLDC motor, the gear transmission system comprising: a primary gearbox coupled to an output shaft of the BLDC motor, and a secondary gearbox coupled to the primary gearbox and configured to output rotational power to a hexagonal output rotor shaft extending along a traverse axis perpendicular to the longitudinal axis; a drive control system electrically connected to the BLDC motor and the rechargeable battery pack, the drive control system configured to regulate power delivery to the BLDC motor based on user input; a set of modular cultivation attachments mechanically coupled to the hexagonal output rotor shaft of the secondary gearbox, the modular cultivation attachments being interchangeable and configured to engage soil during operation; a multi-terrain operability system comprising a depth adjustment mechanism and a resistance control mechanism, the depth adjustment mechanism configured to control a depth of soil penetration of the modular cultivation attachments, and the resistance control mechanism configured to control forward resistance of the apparatus during operation; and an electronic throttle electrically connected to the drive control system and configured to enable selection of a plurality of operating speed modes for controlling torque delivery from the BLDC motor. The use of a BLDC motor provides efficient power delivery with reduced maintenance requirements compared to internal combustion engines, while the rechargeable battery pack eliminates dependency on flammable liquid fuels. The gear transmission system with primary and secondary gearboxes enables effective torque multiplication for demanding soil conditions. The modular cultivation attachments allow the apparatus to be adapted for different agricultural tasks without requiring multiple machines. The multi-terrain operability system enables precise control over cultivation depth and forward resistance, allowing the apparatus to operate effectively across varying terrain conditions. The electronic throttle provides operator control over torque delivery to match different soil types and resistance conditions.
[0008] The multi-terrain operability system further comprises a handlebar assembly having an adjustable angle and an adjustable height, the handlebar assembly configured to maintain operator control and stability across slopes, ridges, and uneven terrain, wherein the handlebar assembly extends along the longitudinal axis rearward from the gear transmission system. The adjustable handlebar assembly enables ergonomic operation across varying terrain gradients and accommodates operators of different heights, reducing operator fatigue during extended use.
[0009] The electronic throttle comprises a four-mode electronic throttle configured to provide four selectable speed modes, each speed mode corresponding to a different motor rotational speed for adapting to different terrain resistance conditions and soil types. The four selectable speed modes allow the operator to precisely match motor output to specific terrain and soil conditions, improving operational efficiency and preventing motor stalling in challenging conditions.
[0010] The set of modular cultivation attachments comprises interchangeable blade configurations including dry land blades, wet land blades, and a ridger attachment, each blade configuration being selectable based on terrain type and soil moisture conditions. The interchangeable blade configurations enable the apparatus to perform effectively in both dry and wet soil conditions, expanding the operational versatility of a single machine across different agricultural environments.
[0011] The depth adjustment mechanism comprises a depth adjustment rod mechanically linked to the modular cultivation attachments, the depth adjustment rod being repositionable to set a cultivation depth ranging from shallow surface weeding to deeper inter-cultivation. The repositionable depth adjustment rod provides precise control over cultivation depth, enabling the apparatus to perform both shallow weeding operations and deeper soil tillage with a single adjustment mechanism.
[0012] The resistance control mechanism comprises a resistance control rod configured to act as a drag stake, the resistance control rod being adjustable in angle and depth to increase or decrease resistance against forward motion of the apparatus. The adjustable resistance control rod enables the operator to control the forward speed of the apparatus by varying drag, which improves precision during cultivation operations and prevents the apparatus from moving too quickly in loose soil conditions.
[0013] The primary gearbox comprises a sliding mesh spur gear arrangement, and the secondary gearbox comprises a crown and pinion bevel-type reduction unit configured to deliver high-torque, low-speed mechanical power to the hexagonal output rotor shaft. The sliding mesh spur gear arrangement in the primary gearbox provides reliable power transmission, while the crown and pinion bevel-type reduction unit in the secondary gearbox delivers the high torque output required for effective soil cultivation in dense or compacted terrain.
[0014] The rechargeable battery pack comprises a lithium-ion battery pack, and wherein the apparatus further comprises a battery management system configured to monitor and control charging and discharging of the battery pack. The lithium-ion battery pack provides high energy density for extended operation, and the battery management system protects the battery from overcharging and deep discharge, extending battery lifespan and ensuring consistent power delivery.
[0015] The apparatus further comprises an audio alarm configured to activate when the apparatus is operating in a reverse direction, the audio alarm providing an audible warning to the operator and bystanders during reverse operation.
[0016] The drive control system comprises a drive switch actuated by an emergency lever system, the drive switch configured to engage the BLDC motor to the gear transmission system when actuated and to disengage power to the BLDC motor when released, thereby providing a safety interlock function. The emergency lever system provides a fail-safe mechanism that immediately disengages power when the operator releases the lever, preventing uncontrolled operation and enhancing operator safety.
[0017] The apparatus further comprises a safety system including one or more of: a miniature circuit breaker (MCB) configured to isolate battery power upon detection of an electrical fault; a safety fender disposed adjacent to the modular cultivation attachments and configured to provide physical protection against debris; a reverse speed limitation configured to limit operational speed when the apparatus is operating in a reverse direction; an audio alarm configured to activate when the apparatus is operating in the reverse direction; an LED light configured to provide visual indication of operational status; and a speed jump prevention mechanism configured to prevent sudden changes in motor speed. The safety system provides multiple layers of protection including electrical fault isolation, physical debris protection, controlled reverse operation, audible warnings, visual indicators, and smooth speed transitions, collectively enhancing operational safety and protecting both the operator and the apparatus.
[0018] The apparatus further comprises a direction mode switch electrically connected to the drive control system, the direction mode switch configured to enable selection between forward and reverse directions of operation, wherein the direction mode switch is positioned on a handlebar assembly of the apparatus. The direction mode switch positioned on the handlebar assembly enables convenient directional control without requiring the operator to change hand position, improving operational efficiency and maneuverability.
[0019] The set of modular cultivation attachments comprises a modular blade system including a plurality of blade groups mounted on the hexagonal output rotor shaft, each blade group comprising a selectable number of blades, the blade groups being configurable based on soil density and moisture conditions. The configurable blade groups allow the operator to adjust the number of blades based on specific soil conditions, enabling efficient operation in both light and heavy soil without changing the entire attachment.
[0020] The modular cultivation attachments are configured to enable the apparatus to perform at least one of weeding, soil pulverization, inter-row cultivation, ditching, and ridging operations. The multi-function capability of the modular cultivation attachments enables a single apparatus to perform a wide range of agricultural operations, reducing equipment costs and storage requirements for agricultural operators.
[0021] In a second aspect, a method of operating the agricultural apparatus for multi-terrain agricultural operations is provided. The method comprises: selecting a blade configuration from the set of modular cultivation attachments based on a terrain type and soil moisture condition; adjusting the depth adjustment mechanism to set a desired cultivation depth; adjusting the resistance control mechanism to set a desired forward resistance; selecting an operating speed mode via the electronic throttle based on terrain resistance; and actuating the drive control system to engage the BLDC motor and perform a cultivation operation. The method provides a systematic approach to configuring the apparatus for specific terrain and soil conditions, ensuring effective cultivation performance across varying agricultural environments.
[0022] The method further comprises adjusting an angle and height of a handlebar assembly to maintain ergonomic control based on terrain slope and operator stance prior to performing the cultivation operation. Adjusting the handlebar assembly prior to operation ensures ergonomic positioning for the specific terrain and operator, reducing fatigue and improving control during extended cultivation operations.

BRIEF DESCRIPTION OF DRAWINGS:
[0023] Embodiments of the invention will be described, by way of example, with reference to the following drawings, in which:
[0024] FIG. 1 illustrates a perspective view of an agricultural apparatus (100) including an audio alarm (142), according to aspects of the present disclosure.
[0025] FIG. 2 illustrates a block diagram of the agricultural apparatus of FIG. 1 including a battery management system (134), an LED light (150), a multi-terrain operability system (118), a depth adjustment rod (120), a resistance control rod (122), a handlebar assembly (126), dry land blades (128), wet land blades (130), a ridger attachment (132), a drive switch (136), a miniature circuit breaker (138), a safety fender (140), an audio alarm (142), a direction mode switch (144), blade groups (146), a light switch (148), an AC 240V charging port (152), and transport wheels (154), according to an embodiment.
[0026] FIG. 3 illustrates a flow diagram of a method of operating the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0027] FIG. 4A illustrates a brushless DC motor of the agricultural apparatus of FIG. 1, according to an embodiment.
[0028] FIG. 4B illustrates a lithium-ion battery pack and a battery management system (134) of the agricultural apparatus of FIG. 1, according to an embodiment.
[0029] FIG. 5A illustrates a drive control system of the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0030] FIG. 5B illustrates a miniature circuit breaker of the agricultural apparatus of FIG. 1, according to an embodiment.
[0031] FIG. 6A illustrates an electronic throttle switch of the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0032] FIG. 6B illustrates a direction mode switch of the agricultural apparatus of FIG. 1, according to an embodiment.
[0033] FIG. 6C illustrates a drive switch and an audio alarm (142) of the agricultural apparatus of FIG. 1, according to an embodiment.
[0034] FIG. 7 illustrates dry land blades and wet land blades of the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0035] FIG. 8 illustrates a ridger attachment of the agricultural apparatus of FIG. 1, according to an embodiment.
[0036] FIG. 9 illustrates interchangeable configurations of modular cultivation attachments of the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0037] FIG. 10 illustrates a side elevation view of the agricultural apparatus of FIG. 1, according to an embodiment.
[0038] FIG. 11 illustrates a top plan view of the agricultural apparatus of FIG. 1, according to aspects of the present disclosure.
[0039] Common reference numerals are used throughout the figures to indicate similar features.

DETAILED DESCRIPTION OF THE DRAWINGS
[0040] FIG. 1 illustrates a perspective view of an agricultural apparatus 100 for performing multi-terrain operations. The apparatus 100 includes a brushless DC (BLDC) motor 11, a lithium-ion (Li-ion) battery pack 13, a gearbox assembly 1, a hexagonal output rotor shaft 14, a drive control system 15, modular cultivation attachments 16, a multi-terrain operability system 118, a throttle switch 8, a handlebar assembly 126, a drive switch 136, a miniature circuit breaker 138, a safety fender 140, a direction mode switch 144, a light switch 148, and an LED light 150.
[0041] The BLDC motor 11 is configured to deliver rotational power along a longitudinal axis of the apparatus 100. The Li-ion battery pack 13 is electrically connected to the BLDC motor 11 and is configured to supply electrical power thereto. The Li-ion battery pack 13 functions as a rechargeable battery pack that provides stored electrical energy for operation of the apparatus 100.
[0042] The gearbox assembly 1 is mechanically coupled to the BLDC motor 11 and functions as a gear transmission system. The gearbox assembly 1 includes a primary gearbox 1a and a secondary gearbox 1b. The primary gearbox 1a is coupled to an output shaft of the BLDC motor 11. The secondary gearbox 1b is coupled to the primary gearbox 1a and is configured to output rotational power to the hexagonal output rotor shaft 14. The hexagonal output rotor shaft 14 extends along a traverse axis perpendicular to the longitudinal axis of the apparatus 100.
[0043] The drive control system 15 is electrically connected to the BLDC motor 11 and the Li-ion battery pack 13. The drive control system 15 is configured to regulate power delivery to the BLDC motor 11 based on user input. The drive control system 15 incorporates built-in protection against over-current and overload conditions.
[0044] The modular cultivation attachments 16 are mechanically coupled to the hexagonal output rotor shaft 14 of the secondary gearbox 1b. Specifically, the modular cultivation attachments are mounted at the base of the secondary gearbox, fitted onto both ends of the hexagonal output rotor shaft. The modular cultivation attachments 16 are interchangeable and are configured to engage soil during operation. The hexagonal output rotor shaft 14 receives rotational power from the secondary gearbox 1b and transmits the rotational power to the modular cultivation attachments 16 for performing agricultural operations. Alternatively, the hexagonal output rotor shaft 14 may drive transport wheels 154 for transporting the apparatus 100 between operational sites.
[0045] The multi-terrain operability system 118 includes a depth adjustment rod 120 and a resistance control rod 122. The depth adjustment rod 120 functions as a depth adjustment mechanism and is configured to control a depth of soil penetration of the modular cultivation attachments 16. The resistance control rod 122 functions as a resistance control mechanism and is configured to control forward resistance of the apparatus 100 during operation.
[0046] The throttle switch 8 functions as an electronic throttle and is electrically connected to the drive control system 15. The throttle switch 8 is configured to enable selection of a plurality of operating speed modes for controlling torque delivery from the BLDC motor 11.
[0047] The handlebar assembly 126 extends along the longitudinal axis rearward from the gearbox assembly 1. The throttle switch 8 and the drive switch 136 are mounted on the handlebar assembly 126. The direction mode switch 144 is electrically connected to the drive control system 15 and is positioned on the handlebar assembly 126. A light switch 148 is mounted on the handlebar assembly 126 and is configured to control an LED light of the apparatus 100.
[0048] The drive switch 136 is configured to engage the BLDC motor 11 when actuated and to disengage power to the BLDC motor 11 when released. The miniature circuit breaker 138 is configured to isolate battery power upon detection of an electrical fault. The safety fender 140 is disposed adjacent to the modular cultivation attachments 16 and is configured to provide physical protection against debris during operation. An LED light 150 is electrically connected to the drive control system 15 and is configured to provide visual indication of operational status.
[0049] FIG. 2 illustrates a block diagram of the agricultural apparatus 100, depicting electrical and mechanical interconnections among the components of the apparatus 100. The block diagram shows the Li-ion battery pack 13, the battery management system 134, the AC 240V charging port 152, the drive control system 15, the miniature circuit breaker 138, the BLDC motor 11, the gearbox assembly 1 comprising the primary gearbox 1a and the secondary gearbox 1b, the hexagonal output rotor shaft 14, the modular cultivation attachments 16, the multi-terrain operability system 118, the handlebar assembly 126, and the safety system components.
[0050] The Li-ion battery pack 13 is electrically connected to the drive control system 15 and supplies DC electrical power thereto. The AC 240V charging port 152 is connected to the Li-ion battery pack 13 for recharging. The battery management system 134 is configured to monitor and control charging and discharging of the Li-ion battery pack 13. The drive control system 15 receives the DC electrical power from the Li-ion battery pack 13 and regulates power delivery to the BLDC motor 11 based on user input received from the throttle switch 8. The miniature circuit breaker 138 is configured to isolate battery power upon detection of an electrical fault. The throttle switch 8 is electrically connected to the drive control system 15 and transmits electronic signals corresponding to a selected operating speed mode. The drive control system 15 receives the electronic signals from the throttle switch 8 and modulates the power delivered from the Li-ion battery pack 13 to the BLDC motor 11 in response to the selected operating speed mode.
[0051] The BLDC motor 11 receives regulated electrical power from the drive control system 15 and converts the electrical energy into rotational mechanical energy. An output shaft of the BLDC motor 11 is mechanically coupled to the gearbox assembly 1. The gearbox assembly 1 comprises the primary gearbox 1a and the secondary gearbox 1b. The primary gearbox 1a is coupled to the output shaft of the BLDC motor 11 and receives rotational power therefrom. The secondary gearbox 1b is coupled to the primary gearbox 1a and receives rotational power from the primary gearbox 1a. The secondary gearbox 1b outputs rotational power to the hexagonal output rotor shaft 14.
[0052] The hexagonal output rotor shaft 14 extends along a traverse axis perpendicular to the longitudinal axis of the apparatus 100 and is mechanically coupled to the modular cultivation attachments 16. The modular cultivation attachments 16 receive rotational power from the hexagonal output rotor shaft 14 and engage soil during operation. The modular cultivation attachments 16 include dry land blades 128, wet land blades 130, a ridger attachment 132, and blade groups 146. Alternatively, transport wheels 154 may be coupled to the hexagonal output rotor shaft 14 for transporting the apparatus 100 between operational sites.
[0053] During operation, the power flow through the apparatus 100 proceeds as follows. The operator selects a desired operating speed mode via the throttle switch 8. The throttle switch 8 transmits an electronic signal corresponding to the selected speed mode to the drive control system 15. The drive control system 15 receives the electronic signal and regulates the electrical power drawn from the Li-ion battery pack 13 according to the selected speed mode. The drive control system 15 delivers the regulated electrical power to the BLDC motor 11. The BLDC motor 11 converts the electrical power into rotational mechanical power and transmits the rotational mechanical power to the primary gearbox 1a. The primary gearbox 1a transmits the rotational power to the secondary gearbox 1b. The secondary gearbox 1b reduces the rotational speed and multiplies the torque, delivering high-torque, low-speed mechanical power to the hexagonal output rotor shaft 14. The hexagonal output rotor shaft 14 transmits the rotational power to the modular cultivation attachments 16, which perform the cultivation operation.
[0054] The multi-terrain operability system 118 further comprises the handlebar assembly 126. The handlebar assembly 126 has an adjustable angle and an adjustable height. The handlebar assembly 126 is configured to maintain operator control and stability across slopes, ridges, and uneven terrain. The handlebar assembly 126 extends along the longitudinal axis rearward from the gearbox assembly 1. The throttle switch 8, the drive switch 136, the direction mode switch 144, and the light switch 148 are mounted on the handlebar assembly 126, enabling the operator to select the operating speed mode, engage the motor, select direction, and control the LED light 150 without releasing grip on the handlebar assembly 126. The multi-terrain operability system 118 also includes the depth adjustment rod 120 for controlling soil penetration depth and the resistance control rod 122 for controlling forward resistance. The safety system includes the miniature circuit breaker 138, the safety fender 140, the audio alarm 142, and the LED light 150.
[0055] FIG. 3 illustrates a flow diagram of a method 200 of operating the agricultural apparatus 100 for multi-terrain agricultural operations. The method 200 comprises a step 202 of selecting a blade configuration, a step 204 of adjusting the depth adjustment mechanism, a step 206 of adjusting the resistance control mechanism, a step 208 of selecting an operating speed mode, and a step 210 of actuating the drive control system.
[0056] At step 202, an operator selects a blade configuration from the set of modular cultivation attachments 16 based on a terrain type and soil moisture condition. As described above, the modular cultivation attachments 16 are mechanically coupled to the hexagonal output rotor shaft 14 and are interchangeable. The interchangeable blade configurations include dry land blades 128, wet land blades 130, and a ridger attachment 132. The operator selects the appropriate blade configuration based on the terrain type and soil moisture conditions present at the cultivation site. For harder or drier soils, denser blade configurations with a greater number of blade groups 146 are selected. For wet or waterlogged soil conditions, fewer blades are selected to reduce resistance and prevent clogging.
[0057] At step 204, the operator adjusts the depth adjustment mechanism to set a desired cultivation depth. The depth adjustment mechanism comprises the depth adjustment rod 120, which is mechanically linked to the modular cultivation attachments 16. The operator repositions the depth adjustment rod 120 to set a cultivation depth ranging from shallow surface weeding to deeper inter-cultivation. The depth adjustment rod 120 physically constrains the working depth of the modular cultivation attachments 16 by controlling how deeply the blades penetrate the soil.
[0058] At step 206, the operator adjusts the resistance control mechanism to set a desired forward resistance. The resistance control mechanism comprises the resistance control rod 122, which is configured to act as a drag stake. The operator adjusts the angle and depth of the resistance control rod 122 to increase or decrease resistance against forward motion of the apparatus 100. Increasing the angle and depth of the resistance control rod 122 increases the drag and slows the forward progress of the apparatus 100. Decreasing the angle and depth of the resistance control rod 122 reduces the drag and allows faster forward progress. The adjustment of the resistance control rod 122 ensures that the apparatus 100 does not advance too quickly in loose soil or stall in heavy soil.
[0059] At step 208, the operator selects an operating speed mode via the electronic throttle based on terrain resistance. The throttle switch 8 functions as the electronic throttle and is configured to enable selection of a plurality of operating speed modes for controlling torque delivery from the BLDC motor 11. The throttle switch 8 provides four selectable speed modes, each speed mode corresponding to a different motor rotational speed. The operator selects a lower speed mode for soft or waterlogged soil conditions and for precision operations. The operator selects a higher speed mode for firm dry soil conditions and for higher area coverage requirements.
[0060] At step 210, the operator actuates the drive control system 15 to engage the BLDC motor 11 and perform a cultivation operation. The operator actuates the drive switch 136 to engage the BLDC motor 11 to the gearbox assembly 1. The drive control system 15 regulates power delivery from the Li-ion battery pack 13 to the BLDC motor 11 based on the selected operating speed mode. The BLDC motor 11 converts the electrical power into rotational mechanical power, which is transmitted through the gearbox assembly 1 to the hexagonal output rotor shaft 14. The hexagonal output rotor shaft 14 transmits the rotational power to the modular cultivation attachments 16, which engage the soil and perform the cultivation operation.
[0061] The method 200 further comprises adjusting an angle and height of the handlebar assembly 126 to maintain ergonomic control based on terrain slope and operator stance prior to performing the cultivation operation. The handlebar assembly 126 has an adjustable angle and an adjustable height. The operator adjusts the handlebar assembly 126 to maintain operator control and stability across slopes, ridges, and uneven terrain.
[0062] The following examples illustrate how an operator configures the apparatus 100 for different soil conditions.
[0063] In a first example, the operator configures the apparatus 100 for operation in dry sandy soil. At step 202, the operator selects dry land blades 128 and mounts a denser blade configuration with a greater number of blade groups 146 on the hexagonal output rotor shaft 14. At step 204, the operator adjusts the depth adjustment rod 120 to set a deeper cultivation depth, as dry sandy soil presents lower resistance to blade penetration. At step 206, the operator adjusts the resistance control rod 122 to a greater angle and depth to increase drag, preventing the apparatus 100 from advancing too quickly in the loose sandy soil. At step 208, the operator selects a higher speed mode via the throttle switch 8, such as Mode 3, to achieve higher area coverage in the firm dry soil conditions. The operator then actuates the drive switch 136 at step 210 to perform the cultivation operation.

[0064] According to the embodiment, the multi-terrain operability system of the device is entirely mechanical and operator controlled. There are no electronic sensors or automated terrain-detection mechanisms. Adaptability across different terrain types is achieved through the following operator-selected adjustments made prior to and during operation: i) Tine / Blade Configuration Selection: The operator selects the appropriate blade group configuration (number of groups and blades per group) based on the terrain type and soil moisture conditions. Denser configurations are used for harder soils; fewer blades are preferred for wet or paddy conditions; ii) Cultivation Depth Control: The resistance is repositioned to control the depth of soil penetration - ranging from shallow surface weeding to deeper inter-cultivation; and iii) Handlebar Angle and Height Adjustment: The operator adjusts the handlebar angle and height (range: 860mm to 1,640mm from ground level) to maintain ergonomic control and stability across slopes, ridges, and uneven terrain; iv) Speed Mode Selection: The operator selects the appropriate motor speed mode (0 to 3) to match terrain resistance and required traction.
[0065] The machine operates across four speed modes (Mode 0 through Mode 3), selected via the throttle switch 8 mounted on the RHS (Right Hand Side) handlebar. Torque delivery is purely speed-mode based — the selected mode determines the motor RPM, which in turn governs power output. There is no terrain sensing, load feedback, or automated control logic involved. The operator first selects the desired speed mode and then activates the machine by pressing the drive switch 136 on the LHS (Left Hand Side) handlebar. Direction of travel (forward or reverse) is controlled independently via a separate direction selector switch on the LHS handlebar. Please refer to the below table which show four modes of operations:

Mode Motor Speed (RPM) Travel Speed Typical Use Case
Mode 0 1,068 ± 20 Slowest Machine start-up, safety default, tight/precision operations
Mode 1 2,510 ± 20 Low–Medium Light field work, soft or waterlogged soil, cautious manoeuvring
Mode 2 3,172 ± 20 Medium–High Standard inter-cultivation, weeding, ridging under normal field conditions
Mode 3 (Max) Up to 3,810 ± 20 Maximum Open terrain, firm dry soil, higher area coverage requirement

(*The BLDC motor achieves peak output power of 3.19 kW at 2,500 RPM (verified by NRFMTTI dynamometer test, January 2026). The declared 30-minute rated power of 2.51 kW was sustained at 2,200 RPM within permissible thermal limits)

[0066] In a second example, the operator configures the apparatus 100 for operation in wet clay soil. At step 202, the operator selects wet land blades 130 and mounts a reduced blade configuration with fewer blade groups 146 on the hexagonal output rotor shaft 14 to reduce resistance and prevent clogging in the wet soil. At step 204, the operator adjusts the depth adjustment rod 120 to set a shallower cultivation depth, as wet clay soil presents higher resistance to blade penetration. At step 206, the operator adjusts the resistance control rod 122 to a reduced angle and depth to decrease drag, allowing the apparatus 100 to maintain forward progress through the heavy wet clay soil without stalling. At step 208, the operator selects a lower speed mode via the throttle switch 8, such as Mode 1, to provide controlled operation in the waterlogged soil conditions. The operator then actuates the drive switch 136 at step 210 to perform the cultivation operation.
[0067] FIG. 4 illustrates components of the agricultural apparatus 100. FIG. 4A illustrates the BLDC motor 11 and FIG. 4B illustrates the Li-ion battery pack 13. The BLDC motor 11 is configured to deliver rotational power along the longitudinal axis of the apparatus 100. The BLDC motor 11 operates without brushes or a commutator, which reduces mechanical wear and eliminates the need for brush replacement. The BLDC motor 11 provides efficient conversion of electrical energy to rotational mechanical energy with reduced maintenance requirements compared to internal combustion engines. The BLDC motor 11 does not require oil changes, spark plug replacements, or fuel filter maintenance. The BLDC motor 11 generates lower noise emissions during operation compared to combustion engines, reducing operator fatigue during extended use. The BLDC motor 11 also produces lower vibration levels, which reduces mechanical stress on components of the apparatus 100.
[0068] The Li-ion battery pack 13 comprises a rechargeable battery pack that is electrically connected to the BLDC motor 11 and is configured to supply electrical power thereto. The Li-ion battery pack 13 has a nominal voltage of 51.2V and a capacity of 100Ah. The Li-ion battery pack 13 provides an average field run time of approximately 3.1 to 3.25 hours per full charge. The apparatus 100 includes an AC 240V charging port 152 for recharging the Li-ion battery pack 13. The apparatus 100 further comprises a battery management system 134 configured to monitor and control charging and discharging of the Li-ion battery pack 13. The battery management system 134 monitors cell voltage, current flow, and temperature of the Li-ion battery pack 13. The battery management system 134 controls charging to prevent overcharging and controls discharging to prevent deep discharge, thereby extending the lifespan of the Li-ion battery pack 13. The battery management system 134 ensures consistent power delivery to the BLDC motor 11 throughout the discharge cycle of the Li-ion battery pack 13. The Li-ion battery pack 13 eliminates dependency on flammable liquid fuels, removing fuel storage and handling requirements associated with combustion engines. The Li-ion battery pack 13 is rechargeable from an electrical power source, enabling repeated use without fuel procurement.
[0069] FIG. 5 illustrates control components of the agricultural apparatus 100. FIG. 5A illustrates the drive control system 15 and FIG. 5B illustrates the miniature circuit breaker 138. The drive control system 15 is electrically connected to the BLDC motor 11 and the Li-ion battery pack 13, as described above. The drive control system 15 is configured to regulate power delivery to the BLDC motor 11 based on user input received from the throttle switch 8. The drive control system 15 comprises a drive switch 136 actuated by an emergency lever system. The drive switch 136 is configured to engage the BLDC motor 11 to the gearbox assembly 1 when actuated and to disengage power to the BLDC motor 11 when released, thereby providing a safety interlock function. When the operator releases the emergency lever system, the drive switch 136 disengages power to the BLDC motor 11, causing the modular cultivation attachments 16 to cease rotation.
[0070] The apparatus 100 further comprises a safety system including the miniature circuit breaker 138. The miniature circuit breaker 138 is configured to isolate battery power upon detection of an electrical fault, such as an overcurrent condition or a short circuit. The safety system further includes a reverse speed limitation configured to limit operational speed when the apparatus 100 is operating in a reverse direction. The apparatus 100 includes an audio alarm 142 configured to activate when the apparatus 100 is operating in the reverse direction, providing an audible warning to the operator and bystanders. The safety system further includes a speed jump prevention mechanism configured to prevent sudden changes in motor speed. The speed jump prevention mechanism controls the rate at which the drive control system 15 increases or decreases power delivery to the BLDC motor 11, providing smooth transitions between operating speed modes.
[0071] FIG. 6 illustrates handlebar-mounted control switches of the agricultural apparatus 100. FIG. 6A illustrates a four-mode electronic throttle switch 8, FIG. 6B illustrates a direction mode switch 144, and FIG. 6C illustrates a drive switch 136 actuated by an emergency lever system. As described above, the throttle switch 8 functions as an electronic throttle and is electrically connected to the drive control system 15. The throttle switch 8 comprises a four-mode electronic throttle configured to provide four selectable speed modes, each speed mode corresponding to a different motor rotational speed for adapting to different terrain resistance conditions and soil types. The direction mode switch 144 is electrically connected to the drive control system 15 and is positioned on the handlebar assembly 126 of the apparatus 100. The direction mode switch 144 is configured to enable selection between forward and reverse directions of operation. The drive switch 136 is actuated by an emergency lever system and is configured to engage the BLDC motor 11 when actuated and to disengage power to the BLDC motor 11 when released, as described above.
[0072] The four selectable speed modes of the throttle switch 8 enable the operator to adapt motor output to specific terrain and soil conditions. For soft or waterlogged soil conditions, such as wet clay or saturated loam, the operator selects a lower speed mode, such as Mode 0 or Mode 1, to provide controlled torque delivery and prevent the apparatus 100 from stalling in high-resistance soil. For firm dry soil conditions, such as compacted earth or dry sandy soil, the operator selects a higher speed mode, such as Mode 2 or Mode 3, to achieve higher motor rotational speed and increased area coverage. The direction mode switch 144 enables the operator to reverse the direction of operation without repositioning the apparatus 100, allowing the operator to maneuver in confined spaces or retrace a cultivation path.
[0073] FIG. 7 illustrates the dry land blades 128 and the wet land blades 130 of the modular cultivation attachments 16. As described above, the set of modular cultivation attachments 16 comprises interchangeable blade configurations including the dry land blades 128, the wet land blades 130, and a ridger attachment 132. Each blade configuration is selectable based on terrain type and soil moisture conditions. The dry land blades 128 and the wet land blades 130 are formed of high carbon steel and have a J-shaped profile configured to engage directly with the soil. The dry land blades 128 are configured for use in compacted or sandy soils where the soil presents lower resistance to blade penetration. The dry land blades 128 are arranged in denser blade configurations with a greater number of blade groups 146 mounted on the hexagonal output rotor shaft 14. The denser blade configuration of the dry land blades 128 provides increased soil engagement for effective cultivation in harder soil conditions. The wet land blades 130 are configured for use in moist or clay-rich soils where the soil presents higher resistance to blade penetration. The wet land blades 130 are arranged in reduced blade configurations with fewer blade groups 146 mounted on the hexagonal output rotor shaft 14. The reduced blade configuration of the wet land blades 130 decreases resistance and prevents clogging when operating in wet or waterlogged soil conditions.
[0074] In an agricultural scenario involving dry sandy soil or compacted earth, the operator selects the dry land blades 128 and mounts a denser blade configuration on the hexagonal output rotor shaft 14. The denser blade configuration enables the apparatus 100 to achieve effective soil pulverization and weeding in firm dry soil conditions. In an agricultural scenario involving wet clay soil or paddy conditions, the operator selects the wet land blades 130 and mounts a reduced blade configuration on the hexagonal output rotor shaft 14. The reduced blade configuration enables the apparatus 100 to maintain forward progress through heavy wet soil without stalling and prevents soil accumulation on the blades during operation in waterlogged conditions.
[0075] FIG. 8 illustrates the ridger attachment 132 of the modular cultivation attachments 16. The ridger attachment 132 is configured to perform ridging and ditching operations in agricultural fields. The ridger attachment 132 is mechanically coupled to the hexagonal output rotor shaft 14 via a standardized mounting interface, enabling interchangeability with the dry land blades 128 and the wet land blades 130. The ridger attachment 132 receives rotational power from the hexagonal output rotor shaft 14 and converts the rotational power into soil displacement for creating furrows or raised beds. The ridger attachment 132 is configured to displace soil laterally as the apparatus 100 advances, forming channels or mounding soil into elevated rows.
[0076] In operation, the ridger attachment 132 is selected when the operator requires the apparatus 100 to perform ridging or ditching tasks. For preparing planting rows, the operator mounts the ridger attachment 132 on the hexagonal output rotor shaft 14 and operates the apparatus 100 along the intended row path. The ridger attachment 132 displaces soil to form raised beds suitable for planting crops that benefit from elevated root zones or improved drainage. For creating drainage channels, the operator configures the depth adjustment rod 120 to set a deeper working depth and operates the apparatus 100 along the intended drainage path. The ridger attachment 132 forms furrows that direct water away from cultivated areas, reducing waterlogging in fields with poor natural drainage.
[0077] FIG. 9 illustrates interchangeable configurations of the modular cultivation attachments 16. The set of modular cultivation attachments 16 comprises a modular blade system including a plurality of blade groups 146 mounted on the hexagonal output rotor shaft 14. Each blade group 146 comprises a selectable number of blades. The blade groups 146 are configurable based on soil density and moisture conditions. The operator selects either the dry land blades 128 or the wet land blades 130 and mounts the selected blades in the blade groups 146 on the hexagonal output rotor shaft 14. The hexagonal cross-section of the hexagonal output rotor shaft 14 provides a standardized mounting interface that secures each blade group 146 in a fixed rotational position relative to the hexagonal output rotor shaft 14. The modular blade system enables the operator to add or remove blade groups 146 from the hexagonal output rotor shaft 14 to adjust the total number of blades based on the soil conditions present at the cultivation site.
[0078] The modular cultivation attachments 16 are configured to enable the apparatus 100 to perform weeding, soil pulverization, inter-row cultivation, ditching, and ridging operations. For weeding operations in dry compacted soil, the operator mounts a greater number of blade groups 146 with dry land blades 128 on the hexagonal output rotor shaft 14 to provide increased soil engagement and effective weed removal. For soil pulverization in firm dry conditions, the operator configures the blade groups 146 with a dense arrangement of dry land blades 128 to break up compacted soil into finer particles. For inter-row cultivation in wet paddy conditions, the operator mounts fewer blade groups 146 with wet land blades 130 on the hexagonal output rotor shaft 14 to reduce resistance and prevent clogging while cultivating between planted rows. For ditching and ridging operations, the operator replaces the blade groups 146 with the ridger attachment 132, as described above. The configurable blade groups 146 enable the apparatus 100 to adapt to varying field conditions without requiring replacement of the entire modular cultivation attachments 16.
[0079] FIG. 10 illustrates a side elevation view of the agricultural apparatus 100. The side elevation view shows the spatial arrangement of the handlebar assembly 126, the Li-ion battery pack 13, the BLDC motor 11, the gearbox assembly 1, the hexagonal output rotor shaft 14, the modular cultivation attachments 16, and the safety fender 140. The handlebar assembly 126 extends rearward from the gearbox assembly 1 at an angle and includes the throttle switch 8 and the drive switch 136 mounted thereon. The Li-ion battery pack 13 is positioned above the BLDC motor 11. The BLDC motor 11 is mechanically coupled to the gearbox assembly 1, which outputs rotational power to the hexagonal output rotor shaft 14. The hexagonal output rotor shaft 14 drives the modular cultivation attachments 16, which are shielded by the safety fender 140. A depth adjustment rod is mechanically linked to the modular cultivation attachments 16 and functions as a depth adjustment mechanism. The depth adjustment rod 120 is repositionable to set a cultivation depth ranging from shallow surface weeding to deeper inter-cultivation. A resistance control rod 122 extends downward at the rear of the apparatus 100 and functions as a resistance control mechanism. The resistance control rod 122 is configured to act as a drag stake and is adjustable in angle and depth to increase or decrease resistance against forward motion of the apparatus 100.
[0080] For shallow surface weeding operations, the operator repositions the depth adjustment rod 120 to a raised setting, limiting the penetration depth of the modular cultivation attachments 16 to the upper soil layer. The operator adjusts the resistance control rod 122 to a reduced angle and shallow depth, decreasing drag and permitting faster forward progress across the field. For deeper inter-cultivation operations, such as breaking up compacted soil between planted rows, the operator repositions the depth adjustment rod 120 to a lowered setting, increasing the penetration depth of the modular cultivation attachments 16 into the soil. The operator adjusts the resistance control rod 122 to a greater angle and increased depth, increasing drag and slowing the forward progress of the apparatus 100 to provide controlled cultivation in dense soil conditions. For ridging or ditching tasks requiring maximum soil displacement, the operator sets the depth adjustment rod 120 to the deepest position and adjusts the resistance control rod 122 to provide sufficient drag to maintain a steady forward speed while the ridger attachment 132 displaces soil laterally.
[0081] FIG. 11 illustrates a top plan view of the agricultural apparatus 100. The top plan view shows the layout of the Li-ion battery pack 13, the BLDC motor 11, the gearbox assembly 1, the hexagonal output rotor shaft 14, the modular cultivation attachments 16, the safety fender 140, and the handlebar assembly 126. The Li-ion battery pack 13 is positioned rearward of the BLDC motor 11. The BLDC motor 11 is mechanically coupled to the gearbox assembly 1. The gearbox assembly 1 comprises a primary gearbox 1a and a secondary gearbox 1b. The primary gearbox 1a comprises a sliding mesh spur gear arrangement and is coupled to an output shaft of the BLDC motor 11. The secondary gearbox 1b comprises a crown and pinion bevel-type reduction unit configured to deliver high-torque, low-speed mechanical power to the hexagonal output rotor shaft 14. The hexagonal output rotor shaft 14 extends along a traverse axis perpendicular to the longitudinal axis of the apparatus 100 and receives rotational power from the secondary gearbox 1b. The modular cultivation attachments 16 are arranged in a plurality of blade groups 146 along the width of the hexagonal output rotor shaft 14. The safety fender 140 is disposed adjacent to the modular cultivation attachments 16 and is configured to provide physical protection against debris during operation. The safety fender 140 shields the rotating blade groups 146 and deflects soil and debris away from the operator during cultivation operations. The handlebar assembly 126 extends rearward from the gearbox assembly 1 along the longitudinal axis of the apparatus 100. The throttle switch 8 and the drive switch 136 are mounted on grips of the handlebar assembly 126, enabling the operator to control operating speed and motor engagement without releasing grip on the handlebar assembly 126.

[0082] The following table shows the Field Performance Results of the agricultural apparatus:

Parameter Observed Range
Speed of operation 0.98 – 1.04 km/h
Depth of cut 7.0 – 7.4 cm
Width of cut 1.19 – 1.21 m
Area covered per hour 0.097 – 0.112 ha/h
Time required per hectare 8.93 – 10.31 h/ha
Weeding efficiency 84.0 – 88.1%
Field efficiency 82.8 – 90.3%
BLDC motor power during operation 2.15 – 2.21 kW
Battery power consumption (per hour) 0.68 – 0.70 kWh/h
Total energy consumption (per session) 6.76 – 7.18 kWh

[0083] The following table shows that Motor Performance (Dynamometer Test) of the agricultural apparatus:
Motor Speed (RPM) Output Power (kW) DC Voltage (V)
500 1.934 48
900 2.594 48
1,200 2.851 48
1,600 3.026 48
1,900 3.109 48
2,200 3.161 48
2,500 (Peak) 3.188 48
2,800 3.184 48
3,100 3.117 48

Peak output power of 3.19 kW was recorded at 2,500 RPM. The declared 30-minute rated power of 2.51 kW (±5%) was sustained continuously at 2,200 RPM within permissible thermal limits.
[0084] The following table shows that Battery Performance (Field Trials) of the agricultural apparatus:
Trial Discharge Time (h) Charge Time (h) Full Charge Voltage (V) Motor Power (kW) Energy/h (kWh)
1 3.23 4.92 53.5 2.15 0.69
2 3.10 5.00 53.4 2.18 0.70
3 3.15 5.00 53.4 2.18 0.69
4 3.25 5.00 53.3 2.21 0.68
5 3.15 5.17 53.3 2.20 0.70

The agricultural apparatus demonstrates consistent energy efficiency, acceptable weeding and field efficiency levels, and reliable motor and battery performance throughout all five field trials.
[0085] The present invention provides several technical advantages over conventional agricultural equipment. The agricultural apparatus provides an integrated electric-powered cultivation system that eliminates dependency on internal combustion engines, thereby reducing maintenance requirements, noise emissions, vibration levels, and gaseous pollutants while enabling effective multi-terrain operation through the combination of a BLDC motor, rechargeable battery pack, gear transmission system, modular cultivation attachments, multi-terrain operability system, and electronic throttle. The handlebar assembly enables ergonomic operation across varying terrain gradients and accommodates operators of different heights, reducing operator fatigue during extended use. The four-mode electronic throttle allows precise matching of motor output to specific terrain and soil conditions, improving operational efficiency and preventing motor stalling in challenging conditions. The interchangeable blade configurations enable the apparatus to perform effectively in both dry and wet soil conditions, expanding operational versatility across different agricultural environments. The depth adjustment rod provides precise control over cultivation depth, enabling both shallow weeding operations and deeper soil tillage with a single adjustment mechanism. The resistance control rod enables the operator to control forward speed by varying drag, improving precision during cultivation operations and preventing excessive speed in loose soil conditions. The sliding mesh spur gear arrangement and crown and pinion bevel-type reduction unit provide reliable power transmission and deliver high torque output for effective soil cultivation in dense or compacted terrain. The lithium-ion battery pack and battery management system provide high energy density for extended operation while protecting the battery from overcharging and deep discharge, extending battery lifespan and ensuring consistent power delivery. The drive switch with emergency lever system provides a fail-safe mechanism that immediately disengages power when the operator releases the lever, preventing uncontrolled operation and enhancing operator safety.
[0086] The safety system provides multiple layers of protection including electrical fault isolation, physical debris protection, controlled reverse operation, audible warnings, visual indicators, and smooth speed transitions, collectively enhancing operational safety. The direction mode switch enables convenient directional control without requiring the operator to change hand position, improving operational efficiency and maneuverability. The modular blade system allows adjustment of the number of blades based on specific soil conditions, enabling efficient operation in both light and heavy soil without changing the entire attachment. The multi-function capability enables a single apparatus to perform a wide range of agricultural operations including weeding, soil pulverization, inter-row cultivation, ditching, and ridging, reducing equipment costs and storage requirements. The method provides a systematic approach to configuring the apparatus for specific terrain and soil conditions, ensuring effective cultivation performance across varying agricultural environments. The handlebar adjustment step ensures ergonomic positioning for the specific terrain and operator, reducing fatigue and improving control during extended cultivation operations
[0087] Features of any of the examples or embodiments outlined above may be combined to create additional examples or embodiments without losing the intended effect. It should be understood that the description of an embodiment or example provided above is by way of example only, and various modifications could be made by one skilled in the art. Furthermore, one skilled in the art will recognize that numerous further modifications and combinations of various aspects are possible. Accordingly, the described aspects are intended to encompass all such alterations, modifications, and variations that fall within the scope of the appended claims.
,CLAIMS:1. An agricultural apparatus (100) for performing multi-terrain operations, the apparatus (100) comprising:
a brushless DC (BLDC) motor (11) configured to deliver rotational power along a longitudinal axis of the apparatus (100);
a rechargeable battery pack (13) electrically connected to the BLDC motor (11) and configured to supply electrical power thereto;
a gear transmission system (1) mechanically coupled to the BLDC motor (11), the gear transmission system (1) comprising:
a primary gearbox (1a) coupled to an output shaft of the BLDC motor (11); and
a secondary gearbox (1b) coupled to the primary gearbox (1a) and configured to output rotational power to a hexagonal output rotor shaft (14) extending along a traverse axis perpendicular to the longitudinal axis;
a drive control system (15) electrically connected to the BLDC motor (11) and the rechargeable battery pack (13), the drive control system (15) configured to regulate power delivery to the BLDC motor (11) based on user input;
a set of modular cultivation attachments (16) mechanically coupled to the hexagonal output rotor shaft (14) of the secondary gearbox (1b), the modular cultivation attachments (16) being interchangeable and configured to engage soil during operation;
a multi-terrain operability system (118) comprising a depth adjustment mechanism (120) and a resistance control mechanism (122), the depth adjustment mechanism (120) configured to control a depth of soil penetration of the modular cultivation attachments (16), and the resistance control mechanism (122) configured to control forward resistance of the apparatus (100) during operation; and
an electronic throttle (8) electrically connected to the drive control system (15) and configured to enable selection of a plurality of operating speed modes for controlling torque delivery from the BLDC motor (11).

2. The agricultural apparatus (100) as claimed in claim 1, wherein the multi-terrain operability system (118) further comprises a handlebar assembly (126) having an adjustable angle and an adjustable height, the handlebar assembly (126) configured to maintain operator control and stability across slopes, ridges, and uneven terrain, wherein the handlebar assembly (126) extends along the longitudinal axis rearward from the gear transmission system (1).
3. The agricultural apparatus (100) of any of claims 1 or 2, wherein the electronic throttle (8) comprises a four-mode electronic throttle configured to provide four selectable speed modes, each speed mode corresponding to a different motor rotational speed for adapting to different terrain resistance conditions and soil types.

4. The agricultural apparatus (100) as claimed in any of claims 1 to 3, wherein the set of modular cultivation attachments (16) comprises interchangeable blade configurations including dry land blades (128), wet land blades (130), and a ridger attachment (132), each blade configuration being selectable based on terrain type and soil moisture conditions.

5. The agricultural apparatus (100) as claimed in any of claims 1 to 4, wherein the depth adjustment mechanism (120) comprises a depth adjustment rod (120) mechanically linked to the modular cultivation attachments (16), the depth adjustment rod (120) being repositionable to set a cultivation depth ranging from shallow surface weeding to deeper inter-cultivation.

6. The agricultural apparatus (100) of any of claims 1 to 5, wherein the resistance control mechanism (122) comprises a resistance control rod (122) configured to act as a drag stake, the resistance control rod (122) being adjustable in angle and depth to increase or decrease resistance against forward motion of the apparatus (100).

7. The agricultural apparatus (100) as claimed in any of claims 1 to 6, wherein the primary gearbox (1a) comprises a sliding mesh spur gear arrangement, and the secondary gearbox (1b) comprises a crown and pinion bevel-type reduction unit configured to deliver high-torque, low-speed mechanical power to the hexagonal output rotor shaft (14).

8. The agricultural apparatus (100) as claimed in any of claims 1 to 7, wherein the rechargeable battery pack (13) comprises a lithium-ion battery pack, and wherein the apparatus (100) further comprises a battery management system (134) configured to monitor and control charging and discharging of the battery pack (13).

9. The agricultural apparatus (100) as claimed in any of claims 1 to 8, wherein the drive control system (15) comprises a drive switch (136) actuated by an emergency lever system, the drive switch (136) configured to engage the BLDC motor (11) to the gear transmission system (1) when actuated and to disengage power to the BLDC motor (11) when released, thereby providing a safety interlock function.

10. The agricultural apparatus (100) as claimed in any of claims 1 to 9, further comprising a safety system including one or more of:
a miniature circuit breaker (MCB) (138) configured to isolate battery power upon detection of an electrical fault;
a safety fender (140) disposed adjacent to the modular cultivation attachments (16) and configured to provide physical protection against debris;
a reverse speed limitation configured to limit operational speed when the apparatus (100) is operating in a reverse direction;
an audio alarm (142) configured to activate when the apparatus (100) is operating in the reverse direction; and
a speed jump prevention mechanism configured to prevent sudden changes in motor speed.

11. The agricultural apparatus (100) as claimed in any of claims 1 to 10, further comprising a direction mode switch (144) electrically connected to the drive control system (15), the direction mode switch (144) configured to enable selection between forward and reverse directions of operation, wherein the direction mode switch (144) is positioned on a handlebar assembly (126) of the apparatus (100).

12. The agricultural apparatus (100) as claimed in any of claims 1 to 11, wherein the set of modular cultivation attachments (16) comprises a modular blade system including a plurality of blade groups (146) mounted on the hexagonal output rotor shaft (14), each blade group (146) comprising a selectable number of blades, the blade groups (146) being configurable based on soil density and moisture conditions.

13. The agricultural apparatus (100) as claimed in any of claims 1 to 12, wherein the modular cultivation attachments (16) are configured to enable the apparatus (100) to perform at least one of weeding, soil pulverization, inter-row cultivation, ditching, and ridging operations.

14. A method of operating the agricultural apparatus (100) of any of claims 1 to 13 for multi-terrain agricultural operations, the method comprising:
selecting a blade configuration from the set of modular cultivation attachments (16) based on a terrain type and soil moisture condition;
adjusting the depth adjustment mechanism (120) to set a desired cultivation depth;
adjusting the resistance control mechanism (122) to set a desired forward resistance;
selecting an operating speed mode via the electronic throttle (8) based on terrain resistance; and
actuating the drive control system (15) to engage the BLDC motor (11) and perform a cultivation operation.

15. The method of claim 14, further comprising adjusting an angle and height of a handlebar assembly (126) to maintain ergonomic control based on terrain slope and operator stance prior to performing the cultivation operation.