Claims:1. An adjustable wheelbase system (200) with power take off for a vehicle (100), said adjustable wheelbase system (200) comprising:
a pair of front axle mounting members (401a, 401b);
a hollow sleeve (411) transversely inserted into a front axle beam (303), ends of said hollow sleeve (411) is connected to said front axle mounting members (401a, 401b); and
at least one locking member (407a, 407b) movably mounted on said hollow sleeve (411),
wherein,
said hollow sleeve (411) is configured to receive a front power take off shaft (405); and
said locking member (407a, 407b) is moved between one of a locked position in which said locking member (407a, 407b) is engaged with said front axle beam (303), and an unlocked position in which said locking member (407a, 407b) is disengaged from said front axle beam (303) to adjust position of said front axle beam (303) thereby adjusting the wheelbase of said vehicle (100).

2. The adjustable wheelbase system (200) as claimed in claim 1, wherein said front axle beam (303) is a non-rotatable dead axle, said locking member (407a, 407b) in the locked position is adapted to lock the front axle beam (303) at the adjusted position.

3. The adjustable wheelbase system (200) as claimed in claim 1, wherein said pair of front axle mounting members (401a, 401b) is connected to front axle supports (201a, 201b) of said vehicle (100).

4. The adjustable wheelbase system (200) as claimed in claim 1, wherein said hollow sleeve (411) defines external threads (413); and
said locking member (407a, 407b) defines internal threads corresponding to said external threads (413) of said hollow sleeve (411), wherein said locking member (407a, 107b) is a lock nut.

5. The adjustable wheelbase system (200) as claimed in claim 1, wherein each of said front axle mounting member (401a, 401b) includes a pillow block bearing (403a, 403b) and an axle bush (409a, 409b) adapted to support said front power take off shaft (405).

6. The adjustable wheelbase system (200) as claimed in claim 1, wherein a power take off gear (205) transmits power to said front power take off shaft (405) through a propeller shaft (213);
said propeller shaft (213) is rotatably coupled to said power take off gear (205) via a propeller shaft rear connector (217);
said front power take off shaft (405) includes a front power take off input shaft (405a) and a front power take off output shaft (405b);
said front power take off input shaft (405b) is connected to said propeller shaft (213) via a propeller shaft front connector (215); and
said front power take off output shaft (405b) transmits power from said front power take off input shaft (405a) to a front implement (101), said front implement (101) is attached to a front hitch (103) of said vehicle (100).

7. The adjustable wheelbase system (200) as claimed in claim 1, wherein
a front power take off shaft lever (209) is adapted to operatively engage or disengage said power take off gear (205) with respect to said front power take off shaft (405); and
a rear power take off shaft lever (211) is adapted to operatively engage or disengage said power take off gear (205) with respect to a rear power take off shaft (207).

8. A method (800) for adjusting a wheelbase of a vehicle (100), said method (800) comprising:
disengaging at least one locking member (407a, 407b) from a front axle beam (303);
adjusting a position of said front axle beam (303) by moving said front axle beam (303) with respect to a hollow sleeve (411) along a lengthwise direction of the vehicle (100) thereby adjusting the wheelbase of said vehicle (100); and
engaging said locking member (407a, 407b) with said front axle beam (303) thereby locking said front axle beam (303) at said adjusted position.

9. The method (800) as claimed in claim 8, wherein said method (800) comprises,
transversely inserting said hollow sleeve (411) into said front axle beam (303);
moveably mounting said locking member (407a, 407b) on said hollow sleeve (411), wherein said locking member (407a, 407b) defines internal threads corresponding to external threads (413) of said hollow sleeve (411);
mounting both ends of said hollow sleeve (411) to front axle mounting members (401a, 401b);
mounting each front axle mounting member (401a, 401b) to corresponding front axle support (201a, 201b) of said vehicle (100);
transmitting power from a power take off gear (205) to a front power take off shaft (405) via a propeller shaft (213); and
supporting said front power take off shaft (405) by a pillow block bearing (403a, 403b) of each front axle mounting member (401a, 401b),
wherein,
said hollow sleeve (411) is configured to receive said front power take off shaft (405).

10. The method (800) as claimed in claim 8, wherein said front axle beam (303) is a non-rotatable dead axle and said locking member (407a, 407b) is a lock nut.
, Description:TECHNICAL FIELD
[001] The present disclosure relates to an adjustable wheelbase system with power take off for an agricultural vehicle, where the adjustable wheelbase system is adapted for varying a distance between a front axle and a rear axle for performing various applications.
BACKGROUND
[002] Generally, vehicles used in an agricultural and constructional environment include tractor, bulldozer, excavator, harvester, cultivator, cargo vehicle, utility vehicle, multifunctional vehicle, multipurpose vehicle, leisure vehicle, pickup vehicle, transport vehicle, agricultural vehicle, farm vehicle, skid loader, industry vehicle, load vehicle and the like are specially designed for off-road applications. Often, in addition to the agricultural work such as ploughing, puddling, tilling, shoveling, harrowing in a field, these vehicles are used for haulage purposes such as to transport a load from one place to another place. Typically, a trailer is attached to the vehicle and the trailer is used to carry loads. In these vehicles, the engine is the primary source of power which is located in the front of the vehicle while one of a three-point linkage, a drawbar or a tow hook is placed at rear of the vehicle to attach the trailer.
[003] Stability is very important for this vehicle while carrying out works in the field or while transporting heavy goods to and from the field. Stability of the vehicle is essential at all times, irrespective of whether the load or implements are attached. If the vehicle is not stable, there is a possibility of rollover or loss of contact with the road. Therefore, an optimum wheelbase is one of the necessary elements for vehicle stability. Wheelbase is the distance between a front and rear axle of the vehicle. If the wheelbase is high, the vehicle is more stable but have a longer turning radius and vice versa. So, the vehicle with longer wheelbase is more suitable for haulage application and the vehicle with shorter wheelbase is well suited for agriculture field applications. So, it is essential to have adjustable wheelbase in this type of vehicle for working in both field and road.
[004] Vehicle power take off is a method of transferring high power and torque from the vehicle engine via the gearbox. The countershaft of the gearbox is usually extended out to the rear side to act as the rear power take off outlet. There are front power take off options available in the agricultural and work vehicles, wherein the power is taken directly through engine crankshaft via independent control clutch and reduction gearbox to get standard power take off speed such as 540 rpm, 540 Economy and 1000 rpm. However, this type of direct front power take off requires additional clutch which is costly and complex in design and demands more packaging space in the vehicle. To simplify this front power take off and improve the transmission efficiency, the front power take off is taken from the same gear box where the rear power take off is taking power. There is a propeller shaft extended from the rear side gear box towards front side to act as a front power take off outlet.
[005] Conventionally, there are some systems and methods to adjust the wheelbase of the vehicle. One such system is an expandable vehicle frame, wherein the vehicle frame includes first and second members having adjustably telescoping channel portions securable by bolts disposed in selected combinations of holes provided in the channel portions for adjusting vehicle wheelbase. But it cannot be specifically applied for vehicles which are being used for different farm applications to adjust and achieve the required wheelbase suitable for the particular farm application.
[006] In some other conventional system, a screw joint is configured with a mechanical crank lever for quickly adjusting the wheelbase ratio thereof by suitably rotating the threaded pivot pin thereby adjusting the wheelbase of the vehicle. But it cannot be specifically applied for vehicles which are being used for different farm applications to adjust and achieve the required wheelbase suitable for the particular farm application.
[007] Most of the wheelbase adjustment systems which are currently used are not suitable for the vehicles which are having front power take off shaft receiving power from rear side gear box. Generally, the front power take off which is receiving power from the rear gearbox is passing below the front axle and projecting towards front end of the vehicle to attach the front implements. In this case, the front power take off shaft will be rotatably attached to the front axle of the vehicle thereby it is challenging to use the conventional systems and methods to adjust the position of the front axle.
[008] Therefore, felt a need for developing a simple, efficient, adjustable wheelbase system with front power take off for a vehicle, which obviates the aforementioned drawbacks.
OBJECTS
[009] Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
[0010] An object of the present disclosure is to provide an adjustable wheelbase system for an agricultural or other work vehicle, which adjusts wheelbase of the vehicle for various applications.
[0011] Still another object of the present disclosure is to provide the adjustable wheelbase system suitable for the agricultural or other work vehicle which is having a front power take off.
[0012] Yet another object of the present disclosure is to provide the adjustable wheelbase system for the vehicle, which is suitable for the front power take off receiving power from a rear side gear box of the vehicle.
[0013] Yet another object of the present disclosure is to provide the adjustable wheelbase system which is simple in design.
[0014] Yet another object of the present disclosure is to provide the adjustable wheelbase system which is cost effective.
[0015] Yet another object of the present disclosure is to provide the adjustable wheelbase system which suitable for all types of front power take off shaft.
[0016] Yet another object of the present disclosure is to provide the adjustable wheelbase system for the rear wheel drive vehicle, having front power take off shaft which is receiving power from the rear gear box.
[0017] Yet another object of the present disclosure is to provide the adjustable wheelbase system for vehicle which is having independently operable front and rear power take off shafts.
[0018] These and other objects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
[0019] The embodiments are illustrated in the accompanying drawings in which:
[0020] Figure 1 & 2 depicts a side view of a vehicle, according to an embodiment as disclosed herein;
[0021] Figure 3 depicts a top view of the vehicle, according to the embodiment as disclosed herein;
[0022] Figure 4 depicts a side view of an adjustable wheelbase system of the vehicle, according to the embodiment as disclosed herein;
[0023] Figure 5a depicts another side view of the adjustable wheelbase system, where a front axle beam is adjusted and positioned at rear end of a hollow sleeve, according to the embodiment as disclosed herein;
[0024] Figure 5b depicts another side view of the adjustable wheelbase system, where the front axle beam is adjusted and positioned at front end of the hollow sleeve, according to the embodiment as disclosed herein;
[0025] Figure 6a depicts a top view of the adjustable wheelbase system along with the front axle and wheels, where the front axle is adjusted and positioned at rear end of the hollow sleeve, according to the embodiment as disclosed herein;
[0026] Figure 6b depicts the top view of the adjustable wheelbase system along with the front axle and wheels, where the front axle is adjusted and positioned at front end of the hollow sleeve, according to the embodiment as disclosed herein;
[0027] Figure 7 depicts the side view of the vehicle along with a front attachment, where fig. 7 shows various wheelbase adjustments for on-road and off-road application, according to the embodiment as disclosed herein; and
[0028] Figure 8 depicts a flowchart indicating a method for adjusting a wheelbase of a vehicle, according to the embodiment as disclosed herein.

DETAILED DESCRIPTION
[0029] 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 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 intended merely 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. Referring now to the drawings and more particularly to Figure 1 through Figure 8, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0030] For the purpose of this description and ease of understanding, the adjustable wheelbase system and method thereof is explained herein below in conjunction with the agriculture vehicle such as tractor. However, it is also within the scope of the invention to use the adjustable wheelbase system and method in any other vehicle without otherwise deterring the intended function can be deduced from the description and corresponding drawings.
[0031] As discussed hereinbefore, wheelbase is the distance between a front and rear axle of the vehicle. If the wheelbase is high, the vehicle will be more stable but have a longer turning radius and vice versa. So, the vehicle with longer wheelbase is well suitable for haulage or on-road application and the vehicle with shorter wheelbase is well suited for field or off-road applications. So, it is essential to have adjustable wheelbase for the vehicles such as agricultural, work vehicles, tractor which are having both on-road and off-road applications.
[0032] Figure 1 & 2 depicts a side view of a vehicle (100), according to an embodiment as disclosed herein. In an embodiment of the present disclosure, the vehicle (100) includes a front implement (101), a front hitch (103), an adjustable wheelbase system (200), a plurality of front axle supports (201a, 201b), an engine (202), a transmission system (203), a power take off gear (205), a rear power take off shaft (207), a front power take off shaft lever (209), a rear power take off shaft lever (211), a propeller shaft (213), a propeller shaft front connector (215) and a propeller shaft rear connector (217). The front hitch (103) is attached to the vehicle at front end for attaching the front implement (101). In the given embodiment, a rotary cultivator is attached to the front hitch (103) of the vehicle. The front implement (101) is driven by a front power take off shaft (405) (as shown in fig. 4). The front power take off shaft (405) includes a front power take off input shaft (405a) and a front power take off output shaft (405b) (as shown in fig. 4). The engine (202) is generating the power and transmits to the transmission system (203). The rear power take off shaft (207) receives power from the transmission system (203) via the power take off gear (205). The power take off gear (205) also transmits power to the front power take off shaft (405) through the propeller shaft (213). One end of the propeller shaft (213) is connected to the front power take off shaft (405) via the propeller shaft front connector (215) and another end of the propeller shaft (213) is rotatably coupled to the power take off gear (205) via the propeller shaft rear connector (217). The propeller shaft front connecter (215) is threadedly engaged with the propeller shaft (213) in one side and other side with the front power take off input shaft (405a). The propeller shaft rear connecter (217) is threadedly engaged with the propeller shaft (213) in one side and other side of the propeller shaft rear connecter (217) is rotatably coupled to the power take off gear (205). The front power take off shaft lever (209) is adapted to operatively engage or disengage the power take off gear (205) with respect to the front power take off shaft (405). The rear power take off shaft lever (211) is adapted to operatively engage or disengage the power take off gear (205) with respect to the rear power take off shaft (207). In the embodiment of the present disclosure, separate power take off shaft lever (209 & 211) are used. However, it is also within the scope of the invention to provide the single power take off shaft lever to operatively engage or disengage the power take off gear (205) with respect to the front power take off shaft (405) or the rear power take off shaft (207).
[0033] Figure 3 depicts a top view of the vehicle (100), according to the embodiment as disclosed herein. In the embodiment of the present disclosure, a steering system (301) is used to control direction of motion of the vehicle by controlling the direction of the motion of front wheels (305a, 305b). A front axle beam (303) is a rigid beam which connects both the front wheels (305a, 305b). The front axle beam (303) is a non-rotatable dead axle and a primary function of the front axle beam (303) is to support weight of the vehicle (100) at front end and to steer the front wheels (305a, 305b). The front axle beam (303) includes a through hole for transversely receiving the front power take off shaft (405) therethrough. A rear axle beam (not shown) connects rear wheels (307a, 307b) and supports the weight of the vehicle at rear side. The primary function of rear axle beam is to transmit the power from the transmission system (203) to the rear wheels (307a, 307b) via a differential (not shown) and axle drive (not shown).
[0034] Figure 4 depicts side view of the adjustable wheelbase system (200) of the vehicle (100), according to the embodiment as disclosed herein. In the embodiment of the present disclosure, the adjustable wheelbase system (200) includes a pair of front axle mounting members (401a, 401b), a plurality of locking members (407a, 407b) and a hollow sleeve (411). The hollow sleeve (411) is a hollow casing which receives the front power take off shaft (405) therethrough. The hollow sleeve (411) is made up of metal such as cast iron. The hollow sleeve (411) is transversely inserted into the front axle beam (303) and both ends of the hollow sleeve (411) are connected to the pair front axle mounting members (410a, 401b). The locking members (407a, 407b) are movably mounted on the hollow sleeve (411). The hollow sleeve (411) is configured to receive the front power take off shaft (405). At least one locking member (407a, 407b) is moved between one of a locked position in which the locking member (407a, 407b) is engaged with the front axle beam (303), and an unlocked position in which the locking member (407a, 407b) is disengaged from the front axle beam (303) to adjust the position of the front axle beam (303) thereby adjusting the wheelbase of the vehicle (100). In the present embodiment, lock nuts are used as the locking member (407a, 407b). However, it is also within the scope of the invention, to use a clamp, castle nuts or fasteners or any other threaded elements as the locking member (407a, 407b).
[0035] The front power take off input shaft (405a) is connected to the propeller shaft (213) via the propeller shaft front connector (215). The front power take off output shaft (405b) transmits power from the front power take off input shaft (405a) to the front implement (101). In one embodiment of the present disclosure, two locking members (407a, 407b) are used on both sides of the front axle beam (303) to lock the front axle beam (303) in the particular position with respect to the hollow sleeve (411). The hollow sleeve (411) defines external threads (413). The locking member (407a, 407b) includes internal threads corresponding to the external threads (413) of the hollow sleeve (411). The locking member (407a, 407b) is movably mounted on the external threads (413) of the hollow sleeve (411). The locking members (407a, 407b) are manually rotatable either by hand or with the help of tools. In the present embodiment, the hollow sleeve (411) includes the external thread in engagement with internal thread of the locking member (407a, 407b). However, it is also within the scope of the invention, to provide the hollow sleeve (411) with a slot to receive clamp or locking pins or fasteners or threaded elements.
[0036] In one embodiment of the present disclosure, each front axle mounting member (401a, 401b) includes a pillow block bearing (403a, 403b) and an axle bush (409a, 409b). Each front axle mounting member (401a, 401b) is connected to corresponding front axle support (201a, 201b) of the vehicle (100). Each front axle mounting member (401a, 401b) acts as a pillow block. A pillow block refers to an anti-friction bearing. Each front axle mounting member (401a, 401b) houses corresponding pillow block bearing (403a, 403b) and portion of the front power take off shaft (405) that is inserted therethrough, allowing the inner part of the pillow block bearing (403a, 403b) / the front power take off shaft (405) to rotate. The pillow block bearing (403a, 403b) or plummer block refers to the mounted bearing on the front axle mounting member (401a, 401b), wherein the front power take off shaft (405) is in a parallel plane to the mounting surface. The inside of the pillow block bearing (403a, 403b) is typically 0.025 mm larger than the front power take off shaft (405) to ensure a tight fit. Set screws, locking collars, or set collars (not shown) are commonly used to secure the front power take off shaft (405). Each front axle mounting member (401a, 401b) is typically made of cast iron or cast steel or other suitable material. Also, each front axle mounting members (401a, 401b) includes the axle bush (409a, 409b) for swinging requirements of the vehicle (100).
[0037] Figure 5a depicts another side of the adjustable wheelbase system (200), where the front axle beam (303) is adjusted and positioned at rear end of the hollow sleeve (411), according to the embodiment as disclosed herein. Adjusting the wheelbase of the vehicle is as follows. The locking member (407b) is disengaged from the front axle beam (303) by manually rotating the locking member (407b) in a direction towards the front axle mounting member (401b) thereby unlocking the front axle beam (303). Thereafter, push/pull the front axle beam (303) in a rearward direction of the vehicle (100) manually and further rotate the locking members (407a, 407b) to engage the locking members (407a, 407b) with the front axle beam (303) therein to lock the front axle beam (303) in a necessary position thereby adjusting the wheelbase of the vehicle (100) particularly for field or off-road application. The position of the front axle beam (303) can be fixed at any position with respect to the hollow sleeve (411) thereby the user of the vehicle has multiple options to set the wheelbase depending on his/her requirement. As disclosed herein before, if the wheelbase is low, the vehicle (100) have a lesser turning radius. So, the vehicle with shorter wheelbase is suited for agriculture field applications or off-road applications to turn the vehicle (100) effectively in the headlands of the farm field.
[0038] Figure 5b depicts another side of the adjustable wheelbase system (200), where the front axle beam (303) is adjusted and positioned at front end of the hollow sleeve (411), according to the embodiment as disclosed herein. Adjusting the wheelbase of the vehicle is as follows. The locking member (407a) is disengaged from the front axle beam (303) by manually rotating the locking member (407a) in a direction towards the front axle mounting member (401a) and push/pull the front axle beam (303) in a forward direction of the vehicle (100) manually, and further rotate the locking members (407a, 407b) to engage the locking members (407a, 407b) with the front axle beam (303) therein to lock the front axle beam (303) in a necessary position thereby adjusting the wheelbase of the vehicle (100) particularly for haulage or on-road application. As disclosed herein before, if the wheelbase is high, the vehicle is more stable and have a longer turning radius. So, the vehicle (100) with longer wheelbase is suited for haulage or on-road applications to run the vehicle (100) stably without the front lifting while hauling the heavy loads.
[0039] Figure 6a depicts the top view of the adjustable wheelbase system (200) along with the front axle beam (303) and wheels (305a, 305b), where the front axle beam (303) is adjusted at rear end of the hollow sleeve (411), according to the embodiment as disclosed herein. Figure 6b depicts the top view of the adjustable wheelbase system (200) along with the front axle beam (303) and wheels (305a, 305b), where the front axle beam (303) is adjusted towards front side of the vehicle, according to the embodiment as disclosed herein. The hollow sleeve (411) is inserted through the hole on the front axle beam (303) without disturbing the steering system (301) of the vehicle (100) at any adjusted position thereby the vehicle can turn and suspend at any adjusted position of the wheelbase.
[0040] Figure 7 depicts the side view of the vehicle (100) along with the front implement (101), where fig. 7 shows various wheelbase adjustments (A & A+X) for off-road and on-road application respectively, according to the embodiment as disclosed herein. The ‘A’ is the distance between the front axle and the rear axle of the vehicle (100) and the wheelbase position ‘A’ refers shortest wheelbase adjustment and the wheelbase can be varied ‘A+X’ distance by the embodiment shown here. In the present embodiment of the disclosure, the shortest wheelbase of the vehicle is 1600 mm and the longest wheelbase is 1800 mm. The wheelbase of the vehicle can be adjusted between the above-mentioned length as mentioned above at various positions. The front power take off shaft speed are designed such a that the front implement (101) such as rotary cultivator, rotary mower have the proportionate speed ratio matching with the vehicle (100) speed thereby simultaneously front implement works on and cultivate / pulverize the soil as well as provides positive traction to the vehicle and higher tractive efficiency as well as rotary power for soil & crop management.
[0041] Figure 8 depicts a flowchart indicating a method (800) for adjusting a wheelbase of a vehicle, according to the embodiment as disclosed herein. For the purpose of this description and ease of understanding, the method (800) is explained herein below with reference to adjusting the wheelbase of the agricultural vehicle. However, it is also within the scope of this invention to practice/implement the entire steps of the method (800) in a same manner or in a different manner or with omission of at least one step to the method (800) or with any addition of at least one step to the method (800) for adjusting the wheelbase of any other vehicle, without otherwise deterring the intended function of the method (800) as can be deduced from the description and corresponding drawings. In an embodiment, at step 802, the method (800) includes, disengaging at least one locking member (407a, 407b) from a front axle beam (303). At step 804, the method (800) includes adjusting a position of the front axle beam (303) by moving the front axle beam (303) with respect to a hollow sleeve (411) along a lengthwise direction of the vehicle thereby adjusting the wheelbase of the vehicle (100). At step 806, the method (800) includes engaging the locking members (407a, 407b) with the front axle beam (303) thereby locking the front axle beam (303) at the adjusted position.
[0042] Further, the method (800) includes, transversely inserting the hollow sleeve (411) into the front axle beam (303) and moveably mounting the locking member (407a, 407b) on the hollow sleeve (411), wherein, the locking member (407a, 407b) defines internal threads corresponding to external threads (413) of the hollow sleeve (411). Further, the method (800) includes mounting both ends of the hollow sleeve (411) to front axle mounting members (401a, 401b) and mounting each front axle mounting member (401a, 401b) to corresponding front axle support (201a, 201b) of vehicle (100). Furthermore, the method (800) includes transmitting power from a power take off gear (205) to a front power take off shaft (405) via a propeller shaft (213). Further, the method (800) includes supporting the front power take off shaft (405) by a pillow block bearing (403a, 403b) of each front axle mounting members (401a, 401b), wherein the hollow sleeve (411) is configured to receive the front power take off shaft (405).
[0043] Advantageously, the adjustable wheelbase system (200) of the present disclosure provides simple, efficient, adjustable wheelbase system which suitable for front power take off shaft which receives power from the rear transmission. Also, the system (200) reduces the risk of vehicle roll over by adjusting the stability for on road and off-road applications. The simple and cost-efficient front power take off along with the present adjustable wheelbase system (200) provides positive traction to the vehicle (100) and higher tractive efficiency.
[0044] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments.
[0045] It is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation. The exemplary embodiments described in this specification are intended merely to provide an understanding of various manners in which this embodiment may be used and to further enable the skilled person in the relevant art to practice this invention.
[0046] Although, the embodiments presented in this disclosure have been described in terms of its preferred embodiments, the skilled person in the art would readily recognize that these embodiments can be applied with modifications possible within the spirit and scope of the present invention as described in this specification by making innumerable changes, variations, modifications, alterations and/or integrations in terms of materials and method used to configure, manufacture and assemble various constituents, components, subassemblies and assemblies, in terms of their size, shapes, orientations and interrelationships without departing from the scope and spirit of the present invention.
[0047] The numerical values given of various physical parameters, dimensions and quantities are only approximate values and it is envisaged that the values higher or lower than the numerical value assigned to the physical parameters, dimensions and quantities fall within the scope of the disclosure unless there is a statement in the specification to the contrary.
[0048] Throughout this specification, the word “comprise”, or variations such as “comprises” or “comprising”, shall be understood to imply including a described element, integer or method step, or group of elements, integers or method steps, however, does not imply excluding any other element, integer or step, or group of elements, integers or method steps.
[0049] The use of the expression “a”, “at least” or “at least one” shall imply using one or more elements or ingredients or quantities, as used in the embodiment of the disclosure in order to achieve one or more of the intended objects or results of the present invention.
[0050] The description of the exemplary embodiments is intended to be read in conjunction with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “lower”, “upper”, “horizontal”, “vertical”, “above”, “below”, “up”, “down”, “top”, and “bottom” as well as derivatives thereof (e.g. “horizontally”, “downwardly”, “upwardly” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion.
[0051] These relative terms are for convenience of description and do not require that the corresponding apparatus or device be constructed or operated in a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected”, refer to a relationship, wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

REFERENCE NUMERAL
100 – Vehicle
101 – Front implement
103 – Front hitch
200 - Adjustable wheelbase system
201a, 201b – Front axle support
202 - Engine
203 – Transmission system
205 - Power take off gear
207 – Rear power take off shaft
209 - Front power take off shaft lever
211 - Rear power take off shaft lever
213 – Propeller shaft
215 - Propeller shaft front connector
217 - Propeller shaft rear connector
301 – Steering system
303 - Front axle beam
305a, 305b – Front wheels
307a, 307b – Rear wheels
401a, 401b - Front axle mounting members
403a, 403b - Pillow block bearings
405 - Front power take off shaft
405a - Front power take off input shaft
405b - Front power take off output shaft
407a, 407b - Locking member
409a, 409b – Axle bush
411 – Hollow sleeve
413 – External thread of hollow sleeve