Description:
FIELD OF INVENTION

[0001] This invention relates to the fields of farming and gardening machines or vehicles and more particularly relates to a light weight multipurpose Agri-vehicle having means for attaching multiple implements without further modification to the front and backend for performing various farming activities.

BACKGROUND OF THE INVENTION
[0002] Agri Vehicles are generally used for land preparation, presently no single machine based integrated solution is available for inter row cultivation, trenching, dozer, post hole drill, seeding, harvesting, crop-care, de-weeding, planting, reaper, boom sprayer; manure bucket, pallet forks, lawn mower, cane/ log handling grappler; weed removal and mulcher, snow blower, bailer, swather, reaper, front cultivator/ rotavator. Farmers need to buy different machines for different use. Also these machines are bigger, costlier and not suitable for Indian land holding pattern. These add on features will not readily integrate with Agri Vehicle architecture and increase in Tractor weight and soil compaction, reduce visibility, stability. One Agri Vehicle with with proper weight distribution and dynamic stability to work in veried soil, ground or terrain condition suitable for regular field prepration, trenching, planting hole, crop care, material handling for agri, horticulture and landscaping works is the requirment of the hour.
[0003] The currently available vehicles or tractors in general are adequate for their intended purposes under land preparation, primary and secondary tillage, and haulage conditions, but they suffer from various performance and operation related limitations to handle multiple agriculture, horticulture, landscaping related works. At present for performing various farm activities multiple costly bigger machines are required. Small and medium farmers cannot afford higher horsepower, costly, bigger multiple machines for their day to day operations which includes ground breaking, material handling, landscaping, crop care, primary and secondary tilling, fertigating, pesticide spraying, transportation, elevated bed preparation, levelling, cane/ bag/ pallet/ log handling; solid and liquid manure handling and spreading, crop care, de-weeding, harvesting, planting.
[0004] Presently available machines including tractors, have a transmission housing having provision for mounting additional frame structure to mount front loader/implements/attachments. These attachments are fixed on an existing general-purpose Agri-vehicle by attaching additional frames on which the loader is mounted. As these frames are complex and have limitations in withstanding load cases, as these frames are additional parts fixed to Agri -vehicle which can compromise on load transfer and weight distribution. Some machines are designed with front loader for attaching multiple implements or attachments but not having capabilities to do farming operations. At present single Agri machine with integral means for a front attachment of implements such as loader, auger, trencher, lawn mower, snow blower, grappler, bush cutter, front cultivator, sprayer and other thereof are not known. For any vehicle to have provisions for attaching multiple implements requires the modification of the machine architecture itself. To maintain the stability of the vehicle during operations in different terrain requires proper designing of the machine architecture to ensure load distribution and reaction forces coming due to various attachments, load case is properly distributed. Presently no integrated solution is available within a single machine.
[0005] During the peak season, to do specific regional operations, related implements or machine availability is difficult as this requires use of multiple special purpose machine for specific type of job. Agri-vehicle or machines currently available in the art are known to handle limited implements. The conventional Agri-vehicles are provided with a rear 3-point linkage mounted implements. They are fitted with a loader by fixing additional brackets on transmission housing to attach different front attachments such as loaders, snow blowers and bush cutter. Different frames and attachments are fitted according to the implements being attached. Agri-vehicle owners or dealers typically install complete front attachments like loaders seasonally.
[0006] With conventional rear 3-point linkage field primary cultivation is done using MB plough, harrow, disc plough resulting in deep ploughing leads to the unfertile soil from bottom coming to top, this process is referred as sub-soiling. The sub-soiling results in loss of soil fertility and reduced crop yield. Front flexible tine cultivator and rear three- point linkage mounted, rotavator, and cultivator can solve this problem. Two implements like front rotavator and rear seed drill or front flexi tine ploughing, and rear rotavator/ cultivator/ seed drill can be operated simultaneously to reduce cycle time and improve field efficiency and fuel consumption.
[0007] Based on crop type, water availability, fertility of land, row spacing is decided. Present Agri Vehicles have limited adjustment capabilities for ‘distances between left and right wheel’ to meet all requirements (refer Table 1). Mostly done by means of flipping wheel rim. This cannot meet various crop row gap requirements. Present hydraulic track adjustments designed for 4-wheel Agri Vehicle require complex system to maintain ‘distance between left and right wheel’ during track width adjustment for both axles and requires more components which increases the complexity.
[0008] Since these Agri Vehicles are heavy, it causes more soil compaction. Use of a four wheeled Agri Vehicles the soil compaction is twice on same track due to front wheel and rear wheel passing on the same track.
[0009] The Tractors fitted with boom sprayer have limited capability to adjust the height of sprayer nozzle and orientation of nozzle with reference to the crop. These adjustments play important role in reducing wastage of chemical and effective dispersant on target area.US Patent No.6,460,643 describes a vehicle with a chassis having high clearance Agri Vehicle capable of fitting different front attachments and capable of working as either a swather or a sprayer. This invention is limited to 2 implements i.e., sprayer attachments and swather attachment these 2 attachments are mounted with 2 different linkage mechanisms.
[0010] US patent 10,710,405 discloses adjustable telescopic frame for adjusting distance between left and right wheel of Agri Vehicle. As sliding member device for housing wheel drive slides in rectangular tube, needs complex machining process to maintain small clearance in rectangular tube, also this arrangement has possibility of high frictional force during sliding.
Thus, there is a need in the art to overcome the various issued of the conventional heavy Agri vehicles discussed supra. Present invention provides a cost effective, light weight multi-purpose Agri vehicle which can perform various agricultural related functions/operations having a universal linkage mount for fixing plurality of Agri-implements, having proper weight distribution and dynamic stability control. The Agri vehicle of the present invention can be used in any different types of terrain, having different soil, and ground conditions, with reduced soil compaction, useful in different types and stage of crops and suitable for most regular Agri and related field operations thereof.

SUMMARY OF THE INVENTION
[0011] Present invention provides a multi-purpose light weight, fuel efficient Agri-vehicle having a triangular frame structure with integral operator cabin. The vehicle is provided with linkage mechanism for attaching plurality of argi implements. Further the vehicle has the provision for independent height adjustment and track width adjustment. This vehicle is suitable for working in different terrain conditions, different types and different stages of crops as further disclosed herein.
[0012] Present invention discloses a multi-purpose light weight fuel efficient Agri vehicle comprising: a triangular frame structure with an integral operator cabin and centralized programmable controler for controlling, operating and performing plurality of functions. The vehicle further comprises of plurality of Agri implements which can be attached to the front and the rear end of the vehicle using a linkage mechanism for performing various agricultural or farming related activities. The vehicle further comprises plurality of ground engaging wheels and means for connecting the wheels to the triangular frame. The triangular frame and the wheels are connected using plurality of hydraulically adjustable cylinders. The vertical cylinder with guide rods provides the means for increasing and decreasing the ‘platform height from ground’ in vertical direction of the vehicle. Further the wheels are interconnected using plurality of horizontal cylinder with guided rods and the horizontal cylinder provides the means for adjusting distance between right and left wheel for increasing or decreasing the track width. The vehicle includes an engine drive hydraulic pump mounted in the triangular frame for powering and operating the vehicle and its inclusive features.
[0013] In an embodiment the operator cabin includes a centralized programmable controller or unit for controlling and operating various features of the vehicle and for performing various functions which include mobility of the vehicle, operating the implements for performing different field functions, adjusting the height of the vehicle, and stabilizing the vehicle during maneuvering the vehicle.
[0014] In an embodiment the programmable control unit used for controlling the traction by automatically controlling vehicle speed and torque based on input signals from various sensors, and controller logic. Controller also controls vertical height adjustment cylinders position, based on level sensor feedback signal. Controller also controls implement operation priority and speed pf operation.
[0015] In an embodiment, the centralized control system further includes an inclinometer for measuring the inclination of the vehicle from the standard ground surface. The reading from the inclinometer is used to increase or decrease the height of the vehicle in front or rear side with reference to the ground by operating the hydraulically operated vertical cylinders. The movement of vertical cylinder with the guided rod based on the inclinometer reading is used to stabilize the vehicle by adjusting vertical cylinder height to compensate inclination in pitch and roll axis when maneuvering over any uneven ground.
[0016] In another embodiment the vehicle is provided with plurality of ground engaging wheels. The wheels are connected to the triangular frame using a plurality of independent hydraulically adjustable cylinders with the built-in guide rod and the front ground engaging wheels are driven by a hydraulic motor.
[0017] In an embodiment two of the ground engaging wheels are connected to the front left and the front right end of the triangular frame are drive wheels and one ground engaging wheel is connected to the rear end of the triangular frame. The rear ground engaging wheel is a swivel wheel without drive.
[0018] In an embodiment the three ground engaging wheels (two in front and one in rear side are connected to the triangular frame) using plurality of independent vertical cylinders with guided rods for adjusting height of the platform from the ground.
[0019] In yet another embodiment, the vehicle is provided front axle with plurality of hydraulically operating adjustable horizontal cylinders having built-in guide rods. The cylinder used in the vehicle includes vertical cylinder and horizontal cylinders which are used for adjusting the height and track width of the vehicle respectively.
[0020] In another embodiment the horizontal cylinder is again connected to the vertical cylinder and drive motors are mounted on vertical cylinders.
[0021] In another embodiment the horizontal and vertical cylinders are further provided with one or more guide bushes for guiding the guide rods. These bushes are secured to the guide plate which is welded to cylinder barrel.
[0022] In another embodiment front axle includes the guide rod end of the horizontal cylinder is operationally fixed to a bracket by means of lock nuts, wherein the L shaped bracket is in turn operationally secured to the two independently operating vertical cylinders, wherein the guide rod end of the two vertical cylinders is securely mounted on the two independent motor mounting brackets through a L shaped bracket.
[0023] In another embodiment the motor mounting bracket further consist of of a low speed high torque hydraulic motor mounted onto the motor mounting bracket and connected to the ground enagaing wheels through adoptor plate.
[0024] In an embodiment the rear independent hydraulically adjustable vertical cylinders with built-in guide rod connected to single rear ground enagaing wheel using a swivel bracket.
[0025] In another embodiment the vehicle is provided with plurality of Agri implement(s) and wherein the implements are attached to the vehicle through a front linkage mechanism and said linkage mechanism includes lift arm and lift cylinder and tilt cylinder.
[0026] In another embodiment the vehicle is provided with rear three-point linkage mechanism for attaching rear implements.
[0027] In an embodiment the implement can be either attached to the front end alone or attached to the rear end alone or it can be attached to both front and rear end simultaneously.
[0028] In another embodiment the linkage mechanism provides the means for selectively mounting the implements to the front and rear portion of the triangular frame for operating simultaneously.
[0029] In another embodiment the front linkage mechanism consists of a lift arm mounted on top pivot point of triangular frame, a lift cylinder mounted on bottom pivot point of frame and pivotally connected to lift arm and a tilt cylinder pivotally mounted on lift arm and rod end of tilt cylinder pivotally connected to the implement.
[0030] In another embodiment the one end of the lift arm is pivoted onto the triangular frame using one or more mounting pins; the lift cylinder functionally connects the lift arm to the triangular frame by means of one or more hinge pin; and the tilt cylinder at one end is functionally connected to the lift arm and the other end of the tilt cylinder functionally connects to the plurality Agri implements.
[0031] In another embodiment the Agri implement attachable to the linkage mechanisms are selected from a group comprising of front-end loader, trencher, auger, post hole drill, lawn mower, sprayer for fertilizer, sprayer for pesticide, sprayer for herbicide, foldable boom sprayer, grappler bucket, grappler fork, cane loader, flexible tine front cultivator, manure bucket, pallet forks, snow plough, swather, bush cutter, bottom dump bucket, cotton fork bucket, rotavator, basket weeder, inter row weed mulcher, bailer, dozer, reaper, sweeper, leveler, MB plough, cultivator, harrow, planters, harvesters, seed drill, category type 1 and type II implements and the like thereof.
[0032] In another embodiment the Agri implement wherein front linkage mounted implements trencher, auger, post hole drill, lawn mower, swather, bush cutter, reaper, rotavator, basket weeder, inter row weed mulcher and rear rotavator, planter , seed drill; rotary motion is provided by independent hydraulic motor driven PTO and for grappler bucket, grappler fork, cane loader, pallet forks, snow plough, bottom dump bucket, cotton fork bucket are operated by bucket cylinder
[0033] In another embodiment the front Agri implement attachable to the vehicle using front linkage mechanism are selected from a group comprising of front-end loader, trencher, auger, post hole drill, lawn mower, sprayer for fertilizer, sprayer for pesticide, sprayer for herbicide, foldable boom sprayer, reaper, grappler bucket, grappler fork, cane / log handler, flexible tine front cultivator, manure bucket, pallet forks, snow plough, swather, bush cutter, bottom dump bucket, cotton fork bucket, rotavator, basket weeder, inter row weed mulcher, dozer, reaper, sweeper, bailer, leveler, and the like thereof.

[0034] In another embodiment the Agri implement attached or mounted to the rear three-point linkage mechanism are selected from a group comprising of MB plough, cultivator, adjustable tine inter row cultivator for height crops, harrow, planters, harvesters, bailer, seed drill, rotavator, trailer, category type 1 and type II implements and the likes thereof.
[0035] In another embodiment the Agri implement attached or mounted to the rear three-point linkage mechanism is operated by hitch control cylinder for controlling draft force and depth of the implement.
[0036] In another embodiment the flexible tine front cultivator is selectively mounted onto the linkage mechanism by means of mounting frame including lift cylinder and tilt cylinder means to adjust height and angle of cultivator tine and spacing between the soil cutting elements adjusted on need basis .
[0037] In another embodiment the sprayer implements with foldable boom, are pivotally connected to lift mechanism including lift arm, lift cylinder and tilt cylinder means to adjust height and angle of sprayer nozzle.
[0038] In another embodiment the rear cultivator mount to the three-point linkage mechanism is provided with plurality of adjustable sliding tines suitable for height crops, wherein the adjustable sliding tines is secured to mounting frame using one or more U bolts, at a desired location.
[0039] In yet another embodiment the triangular frame of the vehicle disclosed herein with its integral operator's cabin provides protection to the operator from dust, sun, chemicals, and rollover.
[0040] The selectable implements mounted through the linkage mechanism, either in the front or at the rear end or both are deployed for process of ground breaking, primary and secondary tilling, material handling, landscaping, crop care, fertigating, rotary tillage, spring ploughing, weeding, cultivation, pesticide spraying, transportation, bailing, trenching for irrigation pipe, cable, water satiation operations, sapling planting holes, water or liquid manure tank handling, seeding, ridge preparation, bund preparation, loading, elevated bed preparation, leveling, cane handling, bag handling, pallet loading, manure handling and spreading, weed cutting & mulching, reaping, sweeping, snow clearing, harvesting, planting, bush hogging, lawn moving, log / cane handling, handling of residues from previous crops, straw cutting and others thereof.
BRIEF DESCRIPTION OF FIGURES

[0041] FIG. 1 Perspective view of a multi purpose Agri Vehicle illustrates front linkage assembly, rear 3-point linkage assembly, height adjustment arrangement according to a first embodiment of the present invention.
[0042] FIG. 2 Front view of the multi purpose Agri Vehicle illustrates Engine with hydraulic pump showing track width adjustment cylinder acording to disclosed embodiments.
[0043] FIG. 3 Detailed view of front axle illustrates track width, height adjustment cylinder, bracketeries, hydraulic motor mounting arrangement acording to disclosed embodiments.
[0044] FIG. 4 illustrates a Perspective, detailed view of the multi purpose Agri Vehicle showing operator controls and enclosure cab, Programable controller, leval sensor and dash board acording to disclosed embodiments.
[0045] FIG. 5 Perspective view of multi purpose Agri Vehicle showing front axle with a trackwidth and height adustment arrangement and wheel drive arrangement acording to disclosed embodiments.
[0046] FIG. 6 Rear three-point linkage mounted cultivator of the multi purpose Agri Vehicle, showing a adjustable independent tines acordance with disclosed embodiments.
[0047] FIG. 7 Side view of the multi purpose Agri Vehicle wherein the linkage mechanism is fitted with front end loader bucket, acordance with disclosed embodiments.
[0048] FIG. 8 Perspective view of the multi purpose Agri Vehicle wherein the multipurpose Agri Vehicle is fitted with front foldable boom sprayer with lift cylinder to adjust height and tilt cylinder to adjust angle of sprayer acordance with disclosed embodiments.
[0049] FIG. 9 Perspective view of multi purpose Agri Vehicle wherein the Linkage mechanism fitted with ‘trencher’ mounted on frame, acordance with disclosed embodiments.
[0050] FIG. 10 Perspective view of the multi purpose Agri Vehicle fitted with auger mounted on frame attaching front Linkage mechanism, acordance with disclosed embodiments.
[0051] FIG. 11 Perspective view of the multi purpose Agri Vehicle wherein the farm Agri Vehicle is fitted with mounted on frame with front flexible tine cultivator acordance with disclosed embodiments.

DETAILED DESCRIPTION OF THE INVENTION
[0052] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and / or detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are merely intended to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0053] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention” will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0054] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Particular embodiments of the present invention may be implemented without some or all of these specific details. In other instances, process operations well known to persons of skill in the art have not been described in detail in order not to obscure unnecessarily the present invention. Various techniques and mechanisms of the present invention will sometimes be described in singular form for clarity. However, it should be noted that some embodiments include multiple iterations of a technique or multiple mechanisms unless noted otherwise. Similarly, various steps of the methods shown and described herein are not necessarily performed in the order indicated or performed at all in certain embodiments. Accordingly, some implementations of the methods discussed herein may include more or fewer steps than those shown or described. Further, the techniques and mechanisms of the present invention will sometimes describe a connection, relationship, or communication between two or more entities. It should be noted that a connection or relationship between entities does not necessarily mean a direct, unimpeded connection, as a variety of other entities or processes may reside or occur between any two entities. Consequently, an indicated connection does not necessarily mean a direct, unimpeded connection unless otherwise noted.
[0055] The present invention discloses, by way of an illustrative embodiment. The configurations presented below show examples of a multi purpose Agri Vehicle with the triangular frame, plurality of implements and means for height and track width adjustment features and related components.
[0056] The main objective of the present invention is to develop a multi-utility, and versatile Agri vehicle to fit multiple implements / attachments with integral solution covering total farming needs, with capability to fit multiple attachments on a front and rear lift mechanism. Part of the versatility of these equipments is the ability to carry and make use of many different attachments, which are commonly required for farm operations. Primarily, aims to mechanize all agricultural and horticultural tasks, by front and rear lift mechanisms to accommodate landscaping, horticulture and forestry applications tools, front cultivation; pest control; harvesting; material handling; landscaping, crop care, auger, trencher, cane handling attachments, manure bucket, pallet forks, straw cutters, fertigation, grappler for log/ sugarcane handling can be fitted on front lift mechanism and adjustable tine cultivator for de weeding. Rear 3-point linkage mounted tillage, cultivation, ploughs, harrow, planter, seed drill, plough, rotavator.
[0057] During the peak season, to do specific regional operations, related implements or machine availability is difficult as special purpose machine are required to be used for specific type of job. For instance, if a pile of dirt/manure/farm products needs to be moved, an operator might choose to use a front loader bucket type implement, attached to move the pile of dirt or even the farm product. Similarly, if the operator intent to perform another task such as spraying, he might utilize a sprayer attachment fixed to lift mechanism, which is operated by the lift and tilt cylinder, by removing attached sprayer another implement like front rotavator can be fixed to lift mechanism. Further, for performing medium duty, primary tillage front flexible tine cultivator is fixed to the lift mechanism similarly for other implements like auger, trencher, can be fixed to lift mechanism.
[0058] Present invention provides a multi-purpose light weight, Agri-vehicle having a triangular frame structure with integral operator cabin. The vehicle is provided with linkage mechanism for attaching plurality of Agri implements. Further the vehicle has the provision for height adjustment and track width adjustment. This vehicle is suitable for working in different terrain conditions, different types and different stages of crops as further disclosed herein.
[0059] Present invention discloses a multi-purpose light weight fuel efficient Agri vehicle comprising: a triangular frame structure with an integral operator cabin. Centralized programmable controller controlling, and performing plurality of functions related to mobility, height and implement control based on control logic and sensor input.
[0060] The proposed vehicle comprises of plurality of Agri implements which can be attached to the front and the rear end of the vehicle using a linkage mechanism for performing various agricultural or farming related activities. The vehicle further comprises plurality of ground engaging wheels and means for connecting the wheels to the triangular frame. The triangular frame and the wheels are connected using plurality of hydraulically adjustable vertical cylinders having built-in guided rods. The guided rod in the vertical cylinder provides the means for increasing and decreasing the height in vertical direction of the vehicle. Further the wheel is interconnected using plurality of horizontal cylinder with guided rods and the horizontal cylinder provides the means for adjusting distance between right and left wheel for increasing or decreasing the track width. The vehicle includes an engine mounted in the triangular frame for powering and operating the vehicle and its inclusive features.
[0061] Conventional tractors having integral casting structure consisting of engine, transmission, rear axle, front axle mount. Adopting the triangular frame structure construction as disclosed in the present invention with built in front and rear linkage mechanism for mounting implements. The weight of tractor is reduced drastically due to replacing of cab, transmission, hydraulic lift unit and axle with fabricated tubular triangular frame with hydraulic motors.
[0062] Present invention provided an agri-vehicle with ground engaging wheels, having built-in capability to attach multiple implements in front using a front lift mechanism and at the rear using 3-point linkage meachism. A hydrostatic transmission for the front wheels, to ensures good comfort, driveability, manurability, steering and controllability.
[0063] Figure 1 to 5 shows the multurpose agri vehicle and its features parts and general arrangements in detail. Figures also show the provisions for mounting front linkage mechanism and rear three-point linkage mechanism trackwidth and height adustment, operator cab, programmable controler and level sensor . Numerous parts which are well known in the prior art are not described here in order not to obscure unnecessarily the present invention.
[0064] The triangular frame structure 13 of the present invention is a fabricated tubular structure that form the base on which all the components are mounted with the intergral operator cabin as seen in the figure 1. On top pivot point 19 and lower pivot point 20 front linkage mechanism 22 constituting lift arm, lift cylinder and tilt cylinder is pivotaly mounted with mounting pins. Rrear side top link 26 mounted on mounting bracket 11 and lower links 02 constitute rear three-point linkage mechanism. Two front height adjustment cylinders 01, and one rear height adjustment cylinder 12 are indipendantly adjusted based on leval sensor 23 feed back signal, to maintain vehicle stability by adjusting height of vertical cylinders as required. These cylinders are indipendantly controled by direction ‘control valve bank’ controled by operator input or by signal from controler device output.
[0065] Figure 1 and 7 shows front linkage mechanism 22 mounted with front mounted loader/implements. Lift arms 35 pivotally mounted on triangular frame 13 on pivot point 19 with help of mounting pins. Tilt cylinder 32 pivotally mounted on triangular frame on pivot 20 through mounting pins. Rod end of cylinder 32 connected to lift arms 35. Tilt cylinder 33 pivotally mounted on lift arm using mounting pins and other end of tilt cylinder connected to front implements. Further front implement is mounted on lift arm and tilt cylinder pivot point . Based on operation of Lever 25 hydraulic cylinder 32 and 33 operated to extend or retract to achieve desired hight and tilting angle of the implement. With control lever operating control valve bank 25 front implement can be moved up and down and approach angle can be tilted to desired requirements. Linkage mechanism 22 consisting lift arm 35, lift cylinder 32 and tilt cylinder 33. Linkage mechanism can be mounted with front-end loader, trencher, auger, post hole drill, lawn mower, sprayer for fertilizer, sprayer for pesticide, sprayer for herbicide, foldable boom sprayer, grappler bucket, grappler fork, cane/ log handler, flexible tine front cultivator, manure bucket, pallet forks, snow plough, swather, bush cutter, bottom dump bucket, cotton fork bucket, rotavator, basket weeder, inter row weed mulcher, dozer blade, reaper, sweeper, leveler to achieve desired purpose or operation.
[0066] Rear end of trangular frame fixed with rear height adjustment cylinder 12 with barrel having L shaped guide plate 04 welded to barrel of cylinder 12 which in tern fixed to triangular frame 13. Guide plate 04 consists of two bushes fixed on both side of cylinder rod. Guide rod end of cylinder 12 are fixed by means of locknut to end plate 6 cylinder rod in turn connected to ‘swivel bracket’ 10 with locknut, which is mounted on bearing for 360 deg fre rotation, which further connected to single rear wheel 9.
[0067] Front axle arrangement shown in fig 3 consists of horrizontal cylinder 18 secured to frame 13 connected by means of mounting bolts through guide plate 5. Oil supply to cylinder 18 from control valves ensures adjustment distance between left and right wheel by ‘equal distance’. Horrizontal Cylinder rod ends and cylinder guide rod ends are securely fixed to bracket 6 by means of locknuts bracket 6 fixed to bracket 8 by means of bolts, Bracket 06 in turn fixed to guide bracket 17 by means of mounting bolts. Cylinder mounting brackets 5 welded to barrel of cylinder, have two bushes fitted on both sides of cylinder rod act as guide to cylinder guide rods 7 are designed to take side loads comming on machine. Two height adustment cylinders 1 with guide rods 7 , sliding on bracket 8 which is welded to barrel of cylinder 1. Bracket 8 is welded with guide bushes on both sides of cylinder rod for guiding guide rods and take side loads in varius operating conditions. Vertical cylinder 1 rod end and cylinder guide rod 7 ends are secured to mounting bracket 6 by means of locknuts. Bracket 6 in turn connected to motor mounting bracket 17 , Low speed high torque hydraulic Motor 16 mounted on mounting L bracket 17, hydraulic motor shaft connected to adaptor plate 4 which in turn fixed to wheels 03;
[0068] Figure 4 Illustrates operator cab 50 with controls, valve bank 21 control the direction and speed of drive motor16, 24 is programable controler with display, 25 is joystick for operating lift cylinder 32 and tilt cylinder 33. Operator compartment 50 is having provision for fixing front shield to frame 13 acts to protect operator from dust, chemicals, frame 13 is also designed to act as ROPS and pivot points 19 and 20 optimaly located to mount lift arm and lift cylinder to suit various front mounted implements and operating conditions. Leval indicator 23 mounted close to machine centre of gravity point, sences and indicates shift in position of vehicle, by adjusting front height adjustment cylinders 1 and rear height adustment cylinder 12 position by operating valve bank 25 to maintain desired machine level.
[0069] Figure 2 shows Engine 14 with hydraulic pumps 15 fixed on to triangular frame, position of engine , hydraulic tank front linkage mounting pivot points are decided based on optimised stability with varius implements and operating positions of implements
[0070] Figure 6 shows rear three-point linkage mounted adjustable tine cultivator. Frame 30 connected with three point linkage mounting frame structure 27 having provision for pivotally connecting top link 26 and two lower links 02. Adjustable tine 29 mounted on housing 28, tine housing fixed to frame 30 using clamps 31. Housing 28 having multiple holesto adjust tine height to suit for crop height. Location of tines adjusted such that tines pass thru centre line between sucessive rows. Rear 3-point hitch standard implements like MB plough, rotavator, cultivator, harrow, planters, harvesters, seed drill can be connected thru three-point linkage interface of Cat.1 or Cat.2 type implements. Ground clearance adjusted to high position only with grown crop needing inter row operations like de weeding, spraying, manure application, for other operations ground clearance set to minimum value.
[0071] Figure 7 shows front linkage mechanism mounted with front end loader bucket. Further loader bucket 34 mounted on lift arm and tilt cylinder rod pivot points. Based on operation of valve bank 25 hydraulic cylinder 32 and 33 operated to extend or retract to achieve desired hight and tilting angle of the bucket. With control lever operating control valve 25 bucket can be moved up and down and angle can be tilted to do scooping , moving and dumping operations.
[0072] Figure 8 Shows sprayer attachment for spraying pesticide, herbicide, fertiliser. Sprayer 37 mounted on linkage mechanism consisting lift arm 35, lift cylinder 32 and tilt cylinder 33. Frame 36 is oriented and pivotally connected to lift arm and tilt cylinder rod end to achieve desired nozzle range and angle. Position of lift cylinder decides height of nozle 38 for spraying and tilt cylinder 33 position decides angle of nozzle 38. Position and angle of nozle properly adjusted to get optimum utilisation of spray and avoid wastage. Sprayer boom 37 is foldable to ensure safety during transportation.During spraying add on liquid tanks are positioned on triangular frame and 3-point linkage.
[0073] Figure 9 shows trencher attachment for making trenches for pipeline, electric cable or water satiation and horticulture purpose. Trencher assembly mounted on front linnkage mechanism. Frame 46 connected to liftarm 35 and tilt cylinder 33 through mounting pins. Frame 46 houses trennching trench cutter 40. Trencher drive 40 and side discharge auger 41 driven by PTO drive hydraulic motor 42 . Hydraulic motor can be adjusted from pump flow control. Position and angle of trencher arrangement is adusted by position of lift cylinder 32 and tilt cylinder33.
[0074] Figure 10 shows linkage mechanism mounted auger / post hole drill. Frame 43 positioned and pivotally connected to lift arm 35 and tilt cylinder 33. PTO drive hydraulic motor 44 mounted on frame 43 drives auger blade 45 to create hole in ground. Depth adustment and location of hole and feed for depth controled by operating lift cylinder 32 and tilt cylinder 33.
[0075] Figure 11 Shows front mounted flexible tine cultivator, frame 49 oriented and pivotally connected to lift arm 35 and tilt cylinder33 to achieve desred cutting angle for tine 48. Frame 49 fitted with flexible tine mounted with cutting tool 48 facilitates piercing and mixing of the soil. Depth of cut for cultivator and entry angle are adjusted by lift cylinder 32 & tilt cylinder 33 to get optimum performance.
[0076] Table1 shows row spacing for varius crops based on general farming practices and soil condition. These values indicate there is wide range of row spacing for crops and based on adjustmet of distance between left and right wheel by flipping the wheel method will support only limited crops and can damage grown crops. Proposed multi utility tractor has taken into acount to cover most of the crops row spacing for inter culture, crop care operations.
Table 1: General farming practice and distance between left and right wheel setting for crop row spacing
crop Row space (cm) No of rows No of tines Distance between left and right wheel(cm) for cultivation/ spraying
Rain-fed wheat/ Ragi/ green pea/ Ground nut/turmeric / ginger/ garlic 20 10 9 180
Chickpea/Bengal gram/ 22.5 10 9 202.5
Rain fed wheat/ Ragi/ green pea/ Ground nut/turmeric / ginger/ garlic 25 8 7 175
Sorghum, mustard 30 8 7 210
purl millet 35 6 5 175
cow pea/ cluster bean/ 37.5 6 5 187.5
Vegetables/ Sorghum/ chili/ carrot/ cabbage/ beat root/ radish 45 6 5 225
Ground nut/ maize 50 4 03/6 150
potato 55 4 03/6 165
pigeon pea/ cotton/ tobacco/ okra/ tomato/ cauliflower/ 60 4 03/6 180
sweet potato/ sugarcane small 70 4 03/6 210
Sugarcane / tobacco 90 2 01/6 150
cardamom 180 2 01/6 160
coffee 210 2 01/6 180

, Claims:CLAIMS
I claim:
1. A multi-purpose light weight Agri vehicle comprising:
(a) a triangular frame structure with an integral operator cabin with the programmable controller for plurality of vehicle function and operational management.
(b) a plurality of Agri implement and wherein the implements are attached through a linkage mechanism and the front linkage mechanism is pivoted on the front side of the triangular frame and rear end attached with 3-point linkage;
(c) plurality of ground engaging wheels and means of attaching the wheels to the triangular frame;
(d) Front axle with plurality of hydraulically adjustable cylinders having built-in guide rods for platform height and track width adjustment; and
(e) an engine mounted in the triangular frame to drive plurality of hydraulic pumps for operation of the vehicle.
2. The vehicle as claimed in claim 1 wherein the linkage mechanism is provided in the front and in the rear end of the triangular frame for connecting the plurality of Agri implements wherein the front linkage mechanism provides means for easy attachment and detachment of the Agri implements, wherein the rear linkage mechanism is a three-point linkage mechanism.
3. The vehicle as claimed in claim 1, and wherein the linkage mechanism provides the means for selectively mounting the implements to the front and rear portion of the triangular frame for simultaneously operation.
4. The vehicle as claimed in claim 2, wherein the front linkage mechanism further consists of a lift arm, a lift cylinder, and a tilt cylinder.
5. The vehicle as claimed in claim 4, wherein the one end of the lift arm is pivoted on to the top pivot point of triangular frame using one or more mounting pins; the lift cylinder pivotally mounted on bottom pivot point, functionally connects the lift arm to the triangular frame by means of one or more hinge pin; and the tilt cylinder at one end is functionally connected to the lift arm and the other end using one or more mounting pins, functionally connects to the plurality Argi implements.
6. The vehicle as claimed in claim 1, wherein the engine and then hydraulic tank weight, Lift arm length and lift cylinder location, pivot points and stroke optimized to suit multiple implements selectively assembled to lift mechanism.
7. The vehicle as claimed in claim 1, wherein the ground engaging wheels are connected to the triangular frame using three independent hydraulically adjustable vertical cylinders with the built-in guide rod for facilitating upward and downward movement of platform for the height adjustment and wherein the ground engaging wheels are driven by a Hydraulic motor.
8. The vehicle as claimed in claim 7, wherein two of the ground engaging wheels are connected to the front left and front right end of the triangular frame and one ground engaging wheel is connected to the rear end of the triangular frame, using three independent height adjustable vertical cylinder with built-in guided rods, wherein the rear ground engaging wheel is a swivel wheel.
9. The vehicle as claimed in claim 8, wherein the front left ground engaging wheel and front right ground engaging wheel are interconnected through one or more hydraulically adjustable horizontal cylinder, having built-in guided rods facilitating horizontal left and right movement for the track width adjustment, and the horizontal cylinder is in turn connected to the vertical cylinder by means of L shaped bracket.
10. The vehicle as claimed in claim 9, wherein the horizontal and vertical cylinders are further provided with one or more guide bushes secured to the cylinder barrel for guiding the guide rods.
11. The vehicle as claimed in claim 9, wherein the guide rod end of the horizontal cylinder is operationally fixed to an first L shaped bracket by means of lock nuts wherein the first L shaped bracket is in turn operationally secured to the two independently operating vertical cylinders with guide rods, wherein the guide rod end of the two vertical cylinders are securely mounted on the two independent motor mounting bracket through an second L shaped bracket,
12. The vehicle as claimed in claim 11 wherein the motor mounting bracket further consist of of a low speed high torque hydraulic motor mounted onto the mounting bracket and connected to the ground enagaing wheels through adopter plate.
13. The vehicle as claimed in claim 8, wherein the rear independent hydraulically adjustable vertical cylinder mounted on triangular frame, having built-in guide rod is connected to single rear ground enagaing wheel using a swivel bracket.
14. The vehicle as claimed in claim 1, wherein the Agri implement are selected from a group comprising of front-end loader, trencher, auger, post hole drill, lawn mower, sprayer for fertilizer, sprayer for pesticide, sprayer for herbicide, foldable boom sprayer, grappler bucket, grappler fork, cane loader, flexible tine front cultivator, manure bucket, pallet forks, snow plough, swather, bush cutter, bottom dump bucket, cotton fork bucket, rotavator, basket weeder, inter row weed mulcher, dozer, reaper, sweeper, leveler, MB plough, cultivator, harrow, planters, harvesters, seed drill, category type 1 and type II implements and the like thereof.
15. The vehicle as claimed in claim 2, wherein the Agri implement mount to the front linkage mechanism are selected from a group comprising of front-end loader bucket, trencher, auger, post hole drill, lawn mower, sprayer for fertilizer, sprayer for pesticide, sprayer for herbicide, foldable boom sprayer, grappler bucket, grappler fork, cane loader, flexible tine front cultivator, manure bucket, pallet forks, snow plough, swather, bush cutter, bottom dump bucket, cotton fork bucket, rotavator, basket weeder, inter row weed mulcher, dozer, reaper, sweeper, leveler, and the like thereof.
16. The vehicle as claimed in claim 2, wherein the Agri implement mount to the rear three-point linkage mechanism are selected from a group comprising of plough, cultivator, adjustable tine inter row cultivator for height crops, harrow, planters, harvesters, seed drill, rotavator, category type 1 and type II implements and the likes thereof.
17. The vehicle as claimed in claim 15, wherein the flexible tine front cultivator is selectively mounted onto the linkage mechanism by means of mounting frame whereas gap between tines tines and angle adjusted based on soil condition. .
18. The vehicle as claimed in claim 15, wherein the sprayer implements with foldable boom, pivotally connected to lift arm and tilt cylinder means for adjusting the height and angle of sprayer nozzle.

19. The vehicle as claimed in claim 16, wherein the rear cultivator mounted on the three-point linkage mechanism is provided with plurality of adjustable sliding tines for height crops, height of tine adjusted to suit crop, adjustable sliding tines is secured to mounting frame using one or more U bolts.
20. The vehicle as claimed in claim 15, wherein front linkage mounted implements trencher, auger, post hole drill, lawn mower, swather, bush cutter, rotavator, basket weeder, inter row weed mulcher rotary motion is provided by independent hydraulic motor and grappler bucket, grappler fork, cane loader, pallet forks, snow plough, bottom dump bucket, cotton fork bucket are operated by bucket cylinder.
21. The vehicle of claim 1 wherein control means for controlling traction and implements are navigated by programmable controller logic and automatically controls mobility, frame height and implements movement.
22. The vehicle as claimed in claim 1, wherein the programmable controller consists of: an inclinometer for measuring the inclination of the vehicle from the ground surface, control valve means for operating the ‘hydraulic adjustable independent vertical cylinders’ to stabilize the vehicle by adjusting cylinder height to compensate inclination in pitch and roll axis.
23. The vehicle of claim 1 wherein the triangular frame with integral operator's cabin, provides protection to the operator from dust, sun, chemicals, and rollover.