Vehicle

Abstract

A vehicle, for use in solving the technical problems of complex transmission system structures and long exhaust paths in existing all-terrain vehicles. The vehicle (100) comprises a vehicle frame (10), a power system (30), a transmission system (40) and an exhaust system (70); the vehicle frame (10) comprises a front space (10a), a middle space (10b) and a rear space (10c) in the traveling direction of the vehicle (100); the power system (30) is arranged in the rear space (10c); the transmission system (40) comprises a front drive shaft (41), a front axle assembly and a rear axle assembly, the front axle assembly is arranged in the front space (10a), one end of the front drive shaft (41) extends to the front space (10a) and is in transmission connection with the front axle assembly, and the other end of the front drive shaft (41) extends to the rear space (10c) and is in transmission connection with one output end of a gearbox (32) of the power system (30); the rear axle assembly is arranged in the rear space (10c), the rear axle assembly comprises two rear half shafts (44), and the two rear half shafts (44) are separately in transmission connection with another output end of the gearbox (32); the exhaust system (70) is arranged in the rear space (10c) and is connected to an engine (31) of the power system (30).

Description

Vehicle

[0001] The present application claims priority to the Chinese Patent Application No. 202410621386.1, filed on May 17, 2024, entitled "All-terrain Vehicle", and the Chinese Patent Application No. 202410621975.X, filed on May 17, 2024, entitled "Straddle Type Vehicle", both of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of vehicle structure, in particular to a vehicle. BACKGROUND

[0003] The all-terrain vehicle is a straddle type vehicle, which has good off-road performance and is gradually applied to sports and leisure activities and racing activities.

[0004] The power system and the exhaust system of the all-terrain vehicle are usually arranged at the middle position of the all-terrain vehicle, which prolongs the exhaust path of the exhaust system, causes a large heat radiation range, and reduces the driving experience and comfort of the driver and passenger. The transmission system of the all-terrain vehicle includes a front transmission shaft and a rear transmission shaft. One end of the front transmission shaft and the rear transmission shaft is respectively connected in transmission with an engine of the power system, and the other end is respectively connected in transmission with a front axle assembly and a rear axle assembly, so as to transmit the power of the engine to the front axle assembly and the rear axle assembly. The structure is complex and the assembly efficiency is low. SUMMARY

[0005] In view of the above problems, the embodiments of the present application provide a vehicle which can shorten the exhaust path of the exhaust system and simplify the structure of the transmission system, thereby improving the assembly efficiency and transmission efficiency.

[0006] In order to achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions:

[0007] The embodiment of the present application provides a vehicle, which comprises a frame, a power system, a transmission system and an exhaust system; the frame comprises a front space, a middle space and a rear space in sequence along the driving direction of the vehicle; the power system is arranged in the rear space, and the power system comprises an engine and a gearbox which is in transmission connection with the engine; the transmission system comprises a front transmission shaft, a front axle assembly and a rear axle assembly; the front axle assembly is arranged in the front space; one end of the front transmission shaft extends to the front space along the driving direction of the vehicle and is in transmission connection with the front axle assembly; the other end of the front transmission shaft extends to the rear space along the driving direction of the vehicle and is in transmission connection with a first output end of the gearbox; the rear axle assembly is arranged in the rear space, and the rear axle assembly comprises two rear half shafts which are in transmission connection with a second output end of the gearbox respectively; the exhaust system is arranged in the rear space and is connected to the engine.

[0008] In a possible implementation, the engine comprises an output crankshaft, and the gearbox comprises an input main shaft; the power system further comprises a transmission device which is in transmission connection with the output crankshaft and the input main shaft respectively and is used for adjusting the torque and the rotating speed of the input main shaft.

[0009] In a possible implementation, along the driving direction of the vehicle, the gearbox is arranged at the rear side of the engine; along the width direction of the vehicle, the transmission device, the engine and the gearbox are located on the same side.

[0010] In a possible implementation, the transmission device is configured as a continuously variable transmission device, which comprises a driving wheel, a driven wheel and a synchronous belt; the driving wheel is connected to the output crankshaft and rotates synchronously with the output crankshaft; the driven wheel is connected to the input main shaft and rotates synchronously with the input main shaft; the synchronous belt is in transmission connection with the driving wheel and the driven wheel, so that the driving wheel and the driven wheel rotate synchronously.

[0011] In a possible implementation, the gearbox further comprises a secondary shaft, an intermediate shaft, a front output gear shaft, a front output driven bevel gear shaft and a rear output gear shaft; the input main shaft and the secondary shaft are in transmission connection through meshed gears; the secondary shaft and the intermediate shaft are in transmission connection through meshed gears; the intermediate shaft is in transmission connection with the front output gear shaft and the rear output gear shaft respectively, wherein the front output gear shaft is in transmission connection with the front output driven bevel gear shaft; the front output driven bevel gear shaft is configured as the first output end of the gearbox and is in transmission connection with the front transmission shaft; the rear output gear shaft is configured as the second output end of the gearbox and is in transmission connection with the two rear half shafts respectively.

[0012] In a possible implementation, the rear output gear shaft is a hollow shaft; the interior of the rear output gear shaft is provided with a first transmission gear segment and a second transmission gear segment, the first transmission gear segment and the second transmission gear segment are arranged at intervals along the axial direction of the rear output gear shaft; the first transmission gear segment and the second transmission gear segment are respectively in transmission connection with the two rear half shafts.

[0013] In a possible implementation, the engine further includes a cylinder head cover; the center of gravity of the cylinder head cover is located between the output crankshaft and the input main shaft along the vehicle height direction.

[0014] In a possible implementation, the front axle assembly includes a front axle and two front half shafts; the front axle is in transmission connection with one end of the front transmission shaft along the vehicle driving direction; the two front half shafts are arranged on the two sides of the front axle along the vehicle width direction and are respectively in transmission connection with the front axle; the distance between the input main shaft and the front half shafts along the vehicle driving direction is a first distance; the distance between the input main shaft and the rear half shafts along the vehicle driving direction is a second distance, and the ratio of the first distance to the second distance is greater than 6.

[0015] In a possible implementation, one end of the front transmission shaft is connected with the front axle along the vehicle driving direction and forms a universal joint structure.

[0016] In a possible implementation, the front transmission shaft and the transmission case are located on one side along the vehicle width direction; the front transmission shaft extends obliquely along the vehicle driving direction, and the included angle between the front transmission shaft and the vehicle driving direction is an obtuse angle, and the angle of the obtuse angle ranges from 115° to 150°.

[0017] In a possible implementation, the vehicle further includes front wheels and rear wheels; the front wheels and the vehicle frame form a front wheel shaft center, and the rear wheels and the vehicle frame form a rear wheel shaft center; the power system is arranged close to the rear wheel shaft center along the vehicle driving direction.

[0018] In a possible implementation, the exhaust system includes an exhaust pipe; the exhaust pipe extends along the vehicle driving direction, one end of the exhaust pipe is in communication with the engine, and the other end of the exhaust pipe extends to the tail end of the vehicle; the exhaust pipe is located at the middle position of the vehicle frame along the vehicle width direction.

[0019] In a possible implementation, the vehicle further includes an air intake system and a fuel system; the fuel system is arranged in the middle space; the power system and the fuel system are fixedly connected to the chassis of the vehicle frame; the air intake system is arranged on the front side of the power system along the vehicle driving direction; the air intake system is located above the fuel system along the vehicle width direction.

[0020] In a possible implementation, the air intake system comprises an air intake pipe, an air filter and an air intake manifold in communication; the air intake pipe is located in the front space, the air filter is arranged between the air intake pipe and the air intake manifold; the air intake manifold is located in the rear space and is in communication with the combustion chamber of the engine.

[0021] In a possible implementation, the vehicle further comprises a steering system; the steering system is arranged in the front space; the steering system is located at the front side of the fuel system in the driving direction of the vehicle; the steering system comprises a steering rod; one end of the air intake pipe is in communication with the air filter, and the other end of the air intake pipe is provided with an air inlet; the air inlet is arranged on the top of the vehicle frame and is located at the rear side of the steering rod in the driving direction of the vehicle.

[0022] In a possible implementation, the vehicle further comprises a front suspension and a rear suspension; the vehicle frame is provided with a rear wheel support and a rear suspension mounting plate; the rear suspension comprises an upper swing arm and a lower swing arm; one end of the upper swing arm is connected to the rear suspension mounting plate and forms two first connection points; the other end of the upper swing arm is connected to the rear wheel support and forms two second connection points; the length between the two first connection points is greater than the length between the two second connection points in the driving direction of the vehicle; the lower swing arm comprises a first branch arm and a second branch arm; one end of the first branch arm and one end of the second branch arm are respectively connected to the rear wheel support; the other end of the first branch arm is connected to the rear suspension mounting plate and forms two third connection points; the other end of the second branch arm is connected to the vehicle frame; the length between the two first connection points is greater than the length between the two third connection points in the driving direction of the vehicle.

[0023] In a possible implementation, the vehicle further comprises a heat dissipation system; the heat dissipation system comprises a radiator; the radiator is arranged at the front end of the vehicle frame in the driving direction of the vehicle and is located on the windward side of the vehicle; the radiator is in communication with the engine and is configured to dissipate heat of the engine.

[0024] In a possible implementation, the vehicle frame comprises two first main beams and two second main beams; the two first main beams correspond to the two second main beams respectively; the two first main beams are arranged in the width direction of the vehicle and are spaced apart; the two second main beams are arranged in the width direction of the vehicle and are spaced apart; the first main beam is arranged above the second main beam in the height direction of the vehicle; the front end of the first main beam is provided with a bending portion and is connected to the front end of the second main beam through the bending portion; the radiator is arranged on the bending portion.

[0025] In a possible implementation, the vehicle further comprises a battery; the fuel system comprises an oil tank, the oil tank is arranged in the middle space, and the oil tank is at least partially mounted on the chassis of the vehicle frame; the battery is arranged in the middle space, and the battery is arranged in parallel with the oil tank and mounted above the chassis of the vehicle frame.

[0026] Compared with the related art, the vehicle provided in the embodiments of the present application has the following advantages.

[0027] In the related art, the power system and the exhaust system of the vehicle are usually arranged at the middle position of the full-shaped vehicle, which results in a long exhaust path of the exhaust system and a large heat radiation range, thereby reducing the driving experience and comfort of the driver and passengers. In the vehicle provided in the embodiments of the present application, the power system and the exhaust system are arranged in the rear space, the exhaust system is connected with the engine of the power system, and the exhaust gas generated by the engine can be discharged through the exhaust pipe, thereby shortening the exhaust path of the exhaust system, reducing the heat radiation range, and improving the comfort of the driver and passengers (the driver and the passenger).

[0028] Meanwhile, compared with the scheme in the related art in which the power system is arranged in the middle space and the power system is transmitted to the rear axle assembly through the rear transmission shaft, the vehicle provided in the embodiments of the present application cancels the rear transmission shaft and the rear axle, and is connected with the output end of the transmission box through two rear half shafts to receive the power from the engine. In this way, the structure of the transmission system is simplified, and the assembly efficiency and the transmission efficiency are improved.

[0029] In addition to the technical problems solved by the above-described embodiments of the present disclosure, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features, the other technical problems solved by the vehicle provided in the embodiments of the present disclosure, the other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0031] FIG. 1 is a front view of the vehicle provided in the embodiments of the present application from one perspective;

[0032] FIG. 2 is a front view of the vehicle provided in the embodiments of the present application from another perspective;

[0033] Fig. 3 is a schematic view of the oil tank and power system arranged on the frame according to an embodiment of the present application;

[0034] Fig. 4 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0035] Fig. 5 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0036] Fig. 6 is a schematic view of the vehicle according to an embodiment of the present application;

[0037] Fig. 7 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0038] Fig. 8 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0039] Fig. 9 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0040] Fig. 10 is a schematic view of the transmission system and power system according to an embodiment of the present application;

[0041] Fig. 11 is a detailed schematic view of the oil tank arranged on the frame according to an embodiment of the present application;

[0042] Fig. 12 is a schematic view of the battery and oil tank according to an embodiment of the present application;

[0043] Fig. 13 is a schematic view of the battery and oil tank according to an embodiment of the present application;

[0044] Fig. 14 is a schematic view of the vehicle according to an embodiment of the present application;

[0045] Fig. 15 is a schematic view of the rear suspension according to an embodiment of the present application;

[0046] Fig. 16 is a schematic view of the rear suspension according to an embodiment of the present application;

[0047] Fig. 17 is a schematic view of the air intake system, fuel system and power system according to an embodiment of the present application;

[0048] Fig. 18 is a schematic view of the air intake system, fuel system and power system according to an embodiment of the present application;

[0049] Fig. 19 is a schematic view of the air intake system according to an embodiment of the present application.

[0050] Explanation of reference signs: 10-frame; 10a-front space; 10b-middle space; 10c-rear space; 11-first main beam; 12-second main beam; 13-support beam; 14-front wheel support; 15-rear wheel support; 16-rear suspension mounting plate; 111-bent part; 20-fuel system; 21-tank; 211-first part; 212-second part; 30-power system; 31-engine; 32-gearbox; 33-transmission; 311-output crankshaft; 321-input main shaft; 322-secondary shaft; 323-intermediate shaft; 324-rotation front output gear shaft; 325-front output driven bevel gear shaft; 326-rear output gear shaft; 331-driving wheel; 332-driven wheel; 333-synchronous belt; 40-transmission system; 41-front transmission shaft; 42-front axle; 43-front half axle; 44-rear half axle; 45-battery; 50-intake system; 51-air filter; 52-intake pipe; 53-intake manifold; 54-intake port; 55-pressure stabilizing cavity; 56-throttle valve; 60-suspension system; 61-rear suspension; 62-front suspension; 611-upper rocker arm; 612-lower rocker arm; 6121-first branch arm; 6122-second branch arm; 70-exhaust system; 71-exhaust pipe; 72-silencer; 80-steering system; 81-steering rod; 82-radiator; 90-running system; 91-front wheel; 92-rear wheel; 100-vehicle. DETAILED DESCRIPTION

[0051] As described in the background, the current all-terrain vehicle has the problems of long exhaust path, large heat radiation range, and influence on the comfort of the driver and passenger, and the technical problems of complex transmission system structure and low assembly efficiency. The inventor found that the reason for these problems is that the power system and the exhaust system of the related art all-terrain vehicle are usually arranged at the middle position of the all-terrain vehicle. For example, the frame of the all-terrain vehicle includes a front space, a middle space, and a rear space, the power system includes an engine, the engine is arranged in the middle space, the transmission system includes a front transmission shaft and a rear transmission shaft, one end of the front transmission shaft and the rear transmission shaft is respectively connected in transmission with the engine, and the other end of the front transmission shaft and the rear transmission shaft is respectively connected in transmission with a front axle assembly and a rear axle assembly. The above-mentioned transmission system has a complex structure, more components, and high assembly difficulty, which leads to low assembly efficiency.

[0052] At the same time, the power system and the exhaust system are arranged at the middle position of the all-terrain vehicle, which will lengthen the exhaust path of the exhaust system, cause a large heat radiation range, and reduce the driving experience and comfort of the driver and passenger.

[0053] To solve the above technical problems, the embodiment of the present application provides a vehicle, which cancels the rear drive shaft and the rear axle, and is connected with the output end of the gearbox through two rear half shafts to receive power from the engine. In this way, the transmission system structure is simplified, and the assembly efficiency and transmission efficiency are improved. The power system and the exhaust system are arranged in the rear space of the frame. In this way, the exhaust path of the exhaust system is shortened, the heat radiation range is reduced, and the comfort of the driver and the passenger is improved.

[0054] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0055] The vehicle provided by the embodiments of the present application includes but is not limited to a straddle-type vehicle, and the straddle-type vehicle includes but is not limited to an all-terrain vehicle. The embodiments of the present application will be described taking the all-terrain vehicle as an example. In order to describe the embodiments of the present application, the coordinate system in the drawings will be described.

[0056] The X-axis direction is the first direction, which can be defined as the driving direction of the all-terrain vehicle. The Y-axis direction is the second direction, which can be defined as the width direction of the all-terrain vehicle. The Z-axis direction is the third direction, which can be defined as the height direction of the all-terrain vehicle.

[0057] As shown in FIGS. 1 to 3, the vehicle 100 provided by the embodiments of the present application includes:

[0058] The frame 10 can be a frame structure and has an accommodation space.

[0059] In the first direction, the accommodation space of the frame 10 is divided into a front space 10a, a middle space 10b and a rear space 10c.

[0060] Exemplarily, the frame 10 in the embodiments of the present application includes two first main beams 11, two second main beams 12 and a plurality of support beams 13. The first main beam 11 and the second main beam 12 can be a weldable square tube or a circular tube.

[0061] In the third direction, the two first main beams 11 are located at the top of the frame 10, and in the second direction, the two first main beams 11 are arranged at the left and right sides of the frame with a spacing. The two second main beams 12 are located at the bottom of the frame 10, and the two first main beams 11 correspond to the two second main beams 12, that is, one first main beam 11 is arranged above each second main beam 12 with a spacing.

[0062] The plurality of support beams 13 are arranged along the third direction, and two ends of each support beam 13 are connected between the corresponding first main beam 11 and second main beam 12, respectively, and the first main beam 11, the second main beam 12 and each support beam 13 form the front space 10a, the middle space 10b and the rear space 10c, respectively.

[0063] The vehicle 100 provided by the embodiment of the present application further comprises a power system 30, a running system 90 and a transmission system 40.

[0064] The power system 30 is arranged in the rear space 10c, and the power system 30 is fixed on the chassis of the vehicle frame 10.

[0065] The power system 30 comprises an engine 31 and a gearbox 32, and the engine 31 is used to provide power for the vehicle 100 to move forward, backward and the like. The engine 31 is in transmission connection with the gearbox 32, and the gearbox 32 has a plurality of transmission shafts and gear assemblies with different transmission ratios, which can receive and adjust the output torque and speed from the engine 31.

[0066] It can be understood that the power of the engine 31 can be transmitted to the running system 90 of the vehicle 100 through the transmission system 40.

[0067] The running system 90 comprises wheels, which can be divided into front wheels 91 and rear wheels 92 according to the mounting positions of the wheels. The front wheels 91 can be mounted on the front end of the vehicle frame 10 through the front wheel supports 14, and the rear wheels 92 can be mounted on the rear end of the vehicle frame 10 through the rear wheel supports 15. The power generated by the power system 30 can be transmitted to the wheels through the transmission system 40 and drive the wheels to rotate.

[0068] Referring to FIGS. 4 to 6, the transmission system 40 comprises a front transmission shaft 41, a front axle assembly and a rear axle assembly. The front axle assembly is arranged in the front space 10a, and the front axle assembly comprises a front axle 42 and two front half shafts 43. The two front half shafts 43 are arranged on the left and right sides of the front axle 42 along the second direction, respectively. The first ends of the two front half shafts 43 are in transmission connection with the front axle 42, respectively. The second ends of the two front half shafts 43 are in connection with the front wheels 91, respectively.

[0069] The rear axle assembly is arranged in the rear space 10c, and the rear axle assembly comprises two rear half shafts 44. Along the second direction, one end of each of the two rear half shafts 44 is located in the gearbox 32 and in transmission connection with the first output end of the gearbox 32, i.e., the first ends of the two rear half shafts 44 are in transmission connection with one output end of the gearbox 32, respectively. The second ends of the two rear half shafts 44 are in connection with the rear wheels 92, respectively.

[0070] Further, the front transmission shaft 41 is arranged along the first direction, a first end of the front transmission shaft 41 extends to the front space and is in transmission connection with the front axle 42, and a second end of the front transmission shaft 41 extends to the rear space 10c and is in transmission connection with the second output end of the transmission 32.

[0071] It should be noted that the two output ends of the transmission 32 can be output components, such as output gears, located on different output shafts, or the two output ends of the transmission 32 can be different output components, such as output gears, arranged on the same output shaft, and the embodiments of the present application do not limit this.

[0072] In the embodiments of the present application, the power system 30 distributes power to the running system 90 through the transmission system 40. The specific path is as follows: the power generated by the engine 31 is transmitted to the transmission 32, and after being adjusted by the transmission 32, part of the power can be transmitted to the front transmission shaft 41 through the output end thereof, and then distributed to the two front half shafts 43 through the front transmission shaft 41 and the front axle 42, and further drive the front wheels 91 to rotate. And part of the power can be transmitted to the two rear half shafts 44 through the other output end thereof, and further transmitted to the two rear wheels 92.

[0073] Compared with the scheme in the related art in which the power system is arranged in the middle space and the power system transmits power to the rear axle assembly through the rear transmission shaft, the vehicle 100 provided by the embodiments of the present application cancels the rear transmission shaft and the rear axle, and transmits power from the engine to the two rear half shafts through the output ends of the transmission, respectively. By such an arrangement, the structure of the transmission system is simplified, thereby reducing the parts of the transmission system and improving the assembly efficiency and the transmission efficiency.

[0074] Referring to FIGS. 1 and 6, the vehicle 100 provided by the embodiments of the present application further comprises an exhaust system 70.

[0075] The exhaust system 70 is arranged in the rear space 10c, and the exhaust system 70 comprises an exhaust pipe 71 and a muffler 72. One end of the exhaust pipe 71 is in communication with the combustion chamber of the engine 31, and the other end of the exhaust pipe 71 is connected with the muffler 72. The exhaust pipe 71 can discharge the exhaust gas in the combustion chamber of the engine 31 through the exhaust pipe 71.

[0076] Further, the muffler 72 is configured as a silencer pipe, and the longitudinal center line of the muffler 72 extends along the second direction, that is, the muffler 72 extends along the width direction of the vehicle frame 10. By such an arrangement, the layout of the vehicle 100 can be optimized, and the vehicle 100 is more compact. Moreover, by arranging the muffler 72 in the rear space 10c and connecting the muffler 72 with the exhaust pipe 71, the exhaust noise can be reduced, and the comfort of the driver and passengers can be improved.

[0077] Referring to FIG. 1, the vehicle 100 provided by the embodiments of the present application further comprises an intake system 50.

[0078] The air intake system 50 is configured to provide air to the combustion chamber of the engine 31, and mix the air with fuel in the combustion chamber, so that the engine 31 can output power. For example, the air intake system 50 further comprises an air filter 51, which is arranged in the middle space 10b and above the fuel system 20. In this way, the layout of the vehicle 100 can be optimized to be more compact.

[0079] The engine 31 of the vehicle 100 generates heat during operation. To ensure normal operation of the engine 31, the vehicle 100 provided in the embodiments of the present application further comprises a heat dissipation system, which is arranged at the front end of the vehicle frame 10 along the first direction, and is in communication with and capable of exchanging heat with the water tank of the engine 31 to reduce the temperature of the engine 31.

[0080] In the related art, the power system and the exhaust system of the vehicle are usually arranged at the middle position of the full-shaped vehicle, which prolongs the exhaust path of the exhaust system and increases the heat radiation range, thereby reducing the driving experience and comfort of the driver and passengers. In the embodiments of the present application, the power system 30 and the exhaust system 70 are arranged in the rear space 10c of the vehicle 100, which can shorten the exhaust path of the exhaust system 70 and reduce the heat radiation range, thereby improving the comfort of the driver and passengers.

[0081] As shown in FIGS. 7-10, the power system 30 provided in the embodiments of the present application further comprises a transmission 33, which is arranged between the engine 31 and the transmission box 32, and the transmission 33 is capable of further adjusting the torque and speed of the engine 31 before inputting to the transmission box 32.

[0082] For example, the engine 31, the transmission box 32 and the transmission 33 are all arranged in the rear space 10c of the vehicle frame 10. Along the first direction, the transmission box 32 is arranged at the rear side of the engine 31, and along the second direction, the transmission 33 is arranged at the same side of the engine 31 and the transmission box 32. The engine 31 comprises an output crankshaft 311, and the transmission box 32 comprises an input main shaft 321, wherein the output crankshaft 311 and the input main shaft 321 are respectively in transmission connection with the transmission 33, that is, the output torque of the engine 31 is transmitted to the transmission 33 through the output crankshaft 311, and then transmitted to the input main shaft 321 through the transmission 33, and the transmission 33 is capable of adjusting the torque and speed of the input main shaft 321.

[0083] Preferably, the transmission 33 provided by the embodiments of the present application is configured as a continuously variable transmission, and the transmission 33 comprises a driving wheel 331, a driven wheel 332 and a synchronous belt 333, wherein the driving wheel 331 is connected to the output crankshaft 311 of the engine 31 and rotates synchronously with the output crankshaft 311; the driven wheel 332 is arranged at the rear side of the driving wheel 331 in the first direction and is connected to the input main shaft 321 of the transmission 32 and rotates synchronously with the input main shaft 321.

[0084] The synchronous belt 333 can be a belt, and the synchronous belt 333 is wound around the driving wheel 331 and the driven wheel 332 to make the driving wheel 331 and the driven wheel 332 rotate synchronously. It can be understood that the output torque of the engine 31 is transmitted to the driving wheel 331 through the output crankshaft 311 and is transmitted to the driven wheel 332 through the synchronous belt 333 and is transmitted to the input main shaft 321 through the driven wheel 332. In this way, the torque and the rotating speed of the input main shaft 321 can be adjusted through the transmission 33.

[0085] The transmission 32 provided by the embodiments of the present application further comprises an auxiliary shaft 322, an intermediate shaft 323, a front output gear shaft 324, a front output driven bevel gear shaft 325 and a rear output gear shaft 326; wherein the auxiliary shaft 322 is in driving connection with the input main shaft 321 of the transmission 32, for example, the auxiliary shaft 322 is in driving connection with the input main shaft 321 through a gear assembly. The auxiliary shaft 322 is in driving connection with the intermediate shaft 323 through a gear assembly, that is, the torque of the input main shaft 321 of the transmission 32 can be transmitted to the auxiliary shaft 322 and the intermediate shaft 323 in sequence, and the input main shaft 321, the auxiliary shaft 322 and the intermediate shaft 323 can rotate synchronously.

[0086] It should be noted that the transmission 32 comprises a housing, and the input main shaft 321, the auxiliary shaft 322, the intermediate shaft 323, the front output gear shaft 324, the front output driven bevel gear shaft 325 and the rear output gear shaft 326 are rotatably arranged in the housing.

[0087] Further, the intermediate shaft 323 extends in the second direction, and a plurality of gears are arranged on the intermediate shaft 323, the plurality of gears are arranged in the axial direction of the intermediate shaft 323, and each gear represents a different transmission ratio. The intermediate shaft 323 can change the rotating speed and the torque by changing the positions of the gears.

[0088] The intermediate shaft 323 in the embodiment of the present application is in transmission connection with the front output gear shaft 324 and the rear output gear shaft 326 respectively. Exemplarily, the gears on the intermediate shaft 323 can be in meshing connection with the gears on the front output gear shaft 324 and the gears on the rear output gear shaft 326 respectively. The front output gear shaft 324 is in transmission connection with the front output driven bevel gear shaft 325, which can be configured as an output end of the transmission 32 and is used to be in transmission connection with the front transmission shaft 41; the rear output gear shaft 326 is configured as another output end of the transmission 32 and can be in transmission connection with two rear half shafts 44 respectively.

[0089] In this way, the output torque from the engine 31 is transmitted to the intermediate shaft 323 through the input main shaft 321 and the auxiliary shaft 322 of the transmission 32, and part of the torque is transmitted to the front output gear shaft 324 and then to the front transmission shaft 41 through the front output driven bevel gear shaft 325, and part of the torque is transmitted to the rear output gear shaft 326 and then to the two rear half shafts 44, so as to realize the distribution of the output torque to the front wheels 91 and the rear wheels 92.

[0090] On the basis of the above-mentioned embodiment, the rear output gear shaft 326 in the embodiment of the present application is a hollow shaft, the outer part of the rear output gear shaft 326 is provided with gears, the inner part of the rear output gear shaft 326 is provided with a first transmission gear segment and a second transmission gear segment, and the first transmission gear segment and the second transmission gear segment are arranged in an axial direction of the rear output gear shaft 326, wherein the first transmission gear segment is in transmission connection with one of the rear half shafts 44, and the second transmission gear segment is in transmission connection with the other of the rear half shafts 44. In this way, the rear axle and the rear transmission shaft can be cancelled, and the two rear half shafts are in transmission connection with the output ends of the transmission respectively.

[0091] Further, the engine 31 further comprises a cylinder head, in order to optimize the layout of the power system 30 in the rear space 10c, the gravity center of the cylinder head of the engine 31 is located between the output crankshaft 311 and the input main shaft 321 of the engine 31 relative to the projection point of the projection plane in the third direction, the projection plane is a plane in which the first direction and the second direction are located, and the plane is parallel to the chassis of the vehicle frame.

[0092] Further, the distance between the input main shaft 321 of the transmission 32 and the front half shaft 43 of the front axle assembly is a first distance, the first distance refers to the distance between the two in the first direction; the distance between the input main shaft 321 of the transmission 32 and the rear half shaft 44 is a second distance, the second distance refers to the distance between the two in the first direction, and the ratio of the first distance to the second distance is greater than 6. In this way, the gravity center of the power system 30 is arranged at a position behind the front and rear wheel shaft centers, which can further shorten the exhaust emission path of the engine, reduce the scope of exhaust heat damage, and improve the driving experience.

[0093] Referring to FIG. 4, the front transmission shaft 41 is arranged on one side of the gearbox 32 along the second direction, and the front transmission shaft 41 extends along the first direction at an angle a with the first direction, and the angle a is an obtuse angle, and the angle a ranges from 115° to 150°. Preferably, the angle of the front transmission shaft 41 is 120°.

[0094] Further, one end of the front transmission shaft 41 is in transmission connection with the front output driven bevel gear shaft 325 of the gearbox 32, and the other end is connected with the front axle 42 and forms a universal joint structure. In this way, the front transmission shaft 41 and the front axle 42 can be installed in a staggered manner, reducing the connection position requirements of the front transmission shaft 41 and the front axle 42, and improving the assembly efficiency.

[0095] Continuing to refer to FIGS. 1-3 and FIG. 11, the vehicle 100 provided by the embodiment of the present application further comprises a fuel system 20.

[0096] The fuel system 20 is arranged in the middle space 10b and fixed to the chassis of the vehicle frame 10, and the fuel system 20 is used to provide fuel to the combustion chamber of the engine 31.

[0097] The fuel system 20 comprises an oil tank 21 and a fuel supply pipeline in communication with the oil tank, wherein the oil tank 21 is arranged in the middle space 10b, and part of the oil tank 21 is fixed to the chassis of the vehicle frame 10, and the oil tank 21 is in communication with the combustion chamber of the engine 31 through the fuel supply pipeline.

[0098] For example, the oil tank 21 is configured as a special-shaped oil tank, part of the bottom of the oil tank 21 can be in contact with and fixedly connected to the chassis of the vehicle frame 10, and part of the bottom of the oil tank 21 is located above the chassis and maintains a distance from the chassis of the vehicle frame 10.

[0099] Referring to FIGS. 11 and 13, the vehicle 100 provided by the embodiment of the present application further comprises a battery 45, and the battery 45 is used to supply power to various components of the vehicle 100. The battery 45 can be a storage battery or other type of battery, and the embodiment of the present application does not limit this. The battery 45 is arranged in the middle space 10b, and the battery 45 is installed above the chassis of the vehicle frame 10, i.e., the bottom of the battery 45 maintains a distance from the chassis of the vehicle frame 10 along the third direction.

[0100] For example, the vertical distance L between the bottom of the battery 45 and the chassis of the vehicle frame 10 ranges from 130 mm to 170 mm. Preferably, the vertical distance between the bottom of the battery 45 and the chassis of the vehicle frame 10 is 150 mm. In this way, not only can the gravity center of the battery 45 be lowered, but also the height of the battery 45 can be ensured, avoiding the battery 45 from being eroded by ground water vapor, and improving the service life of the battery 45.

[0101] Further, the battery 45 and the fuel tank 21 are arranged in parallel in the embodiment of the present application. The "parallel arrangement" means that the battery 45 and the fuel tank 21 are parallel at least in the first direction and / or the second direction, or the projections of the two in the first direction and / or the second direction have overlapping parts. For example, along the first direction, the battery 45 and the fuel tank 21 are arranged front and back; or along the second direction, the battery 45 and the fuel tank 21 are arranged left and right, which is not limited in the embodiment of the present application.

[0102] In the related art, the battery is arranged under the seat cushion of the vehicle and above the fuel tank, which results in a high center of gravity of the vehicle, and the vehicle is prone to rollover when turning. However, in the embodiment of the present application, the fuel tank 21 and the battery 45 are arranged in parallel, which can reduce the center of gravity of the vehicle 100 and reduce the risk of rollover of the vehicle 100 when turning, thereby improving the driving safety.

[0103] On the basis of the above-mentioned embodiment, the fuel tank 21 has a containing space matched with the battery 45, and the battery 45 is arranged in the containing space, that is, part of the battery 45 is wrapped in the contour of the fuel tank 21. In this way, the parallel arrangement of the battery 45 and the fuel tank 21 is realized, and the layout of the vehicle 100 is optimized, so that the vehicle is more compact as a whole.

[0104] For example, the fuel tank 21 is configured as a special-shaped fuel tank, and one side of the fuel tank 21 has a containing space or a space for avoiding arrangement. The containing space is arranged in cooperation with the outer contour of the fuel tank 21, so that the battery 45 can be arranged in the containing space, that is, at least the battery 45 is located in the containing space of the fuel tank 21, so as to reduce the layout space of the two.

[0105] For example, the fuel tank 21 includes a first part 211 and a second part 212 connected in communication. Along the first direction, the first part 211 is arranged at the front side of the second part 212, and the bottom of the first part 211 smoothly transitions toward the bottom of the second part 212. The bottom of the second part 212 is fixed to the chassis of the vehicle frame 10, that is, part of the bottom of the fuel tank 21 is fixedly connected to the chassis of the vehicle frame 10.

[0106] Along the second direction, the first side of the first part 211 protrudes from the first side of the second part 212 and encloses the containing space. In other words, the extension length of the first part 211 along the second direction is greater than the extension length of the second part 212 along the second direction, and a certain distance is maintained between the first side of the first part 211 and the first side of the second part 212. The distance can be matched with the length of the battery 45 in the second direction, so that the battery 45 is arranged in the containing space formed by the first part 211 and the second part 212.

[0107] It can be understood that the battery 45 is arranged in the containing space, and the bottom of the battery 45 is located above the chassis of the vehicle frame 10.

[0108] In some embodiments, the vehicle 100 further comprises a support frame, which is located in the accommodation space, and one end of the support frame is connected to the chassis of the frame 10, and the other end of the support frame extends upward along the third direction and extends to the bottom of the battery 45, so that the bottom of the battery 45 is connected to the support frame, that is, the battery 45 is installed above the chassis of the frame. In this way, an avoidance space can be formed between the bottom of the battery 45 and the chassis of the frame 10.

[0109] In detail, the second part 212 of the oil tank 21 is connected to the chassis of the frame 10, and the first part 211 of the oil tank 21 is spaced apart from the chassis of the frame 10, that is, along the third direction, the bottom of the second part 212 is located below the bottom of the first part 211. In other words, the bottom of the second part 212 is lower than the bottom of the first part 211. The bottom of the first part 211 is farther away from the chassis of the frame 10 than the bottom of the second part 212, and an avoidance part is formed between the bottom of the first part 211 and the chassis of the frame 10.

[0110] Further, one end of the front transmission shaft 41 is in transmission connection with the output end of the transmission box 32, and the other end of the front transmission shaft 41 extends toward the front space 10a along the first direction, and the front transmission shaft 41 passes through the avoidance part and is located below the first part 211 and the battery 45.

[0111] It can be understood that the front transmission shaft 41 is arranged on one side of the second part 212 along the second direction, and the second part 212 is located below the front transmission shaft 41 along the third direction. As can be seen, the bottom of the second part 212 is at a lower height, and the special-shaped oil tank composed of the first part 211 and the second part 212 can increase its volume in the case of limited installation space.

[0112] Referring to FIG. 1, the vehicle 100 provided by the embodiment of the application further comprises a steering system 80, which is arranged in the front space 10a and is used to control the forward direction of the vehicle 100. For example, the steering system 80 comprises a handlebar and a steering rod 81 connected thereto, the steering rod 81 extends along the third direction, and the steering rod 81 can be in transmission connection with the front half shaft 43 of the front axle assembly through a steering gear and control the front wheel 91 to turn.

[0113] On the basis of the above-mentioned embodiment, the heat dissipation system in the embodiment of the application comprises a radiator 82, which is arranged at the front end of the frame 10 along the first direction and is located on the windward surface of the all-terrain vehicle. For example, the radiator 82 can be detachably connected to the front end of the frame 10, the radiator 82 is configured as a water-cooled radiator 82, and the radiator 82 is in communication with the water tank of the engine 31 through a fluid pipeline, so as to dissipate the heat generated during the operation of the engine 31.

[0114] Further, the radiator 82 is arranged at the front end of the frame 10. Referring to FIG. 11, the first main beam 11 extends along the first direction, and the front end of the first main beam 11 has a bent portion 111 extending obliquely downward along the third direction, and the oblique direction is toward the front side along the first direction, that is, the bent portion 111 forms an inclined surface at the front end. The radiator 82 is detachably arranged on the bent portion 111 and is located on the windward side of the vehicle 100.

[0115] Referring to FIGS. 1 and 2, in the embodiment, a front wheel shaft center is formed between the front wheel 91 and the frame 10, and a rear wheel shaft center is formed between the rear wheel 92 and the frame 10. Along the first direction, the power system 30 is arranged close to the rear wheel shaft center. For example, the distance between the front wheel shaft center and the rear wheel shaft center is S1, and the distance between the front wheel shaft center and the front end of the power system 30 is S2, and S2 is greater than 0.5S1. In this way, the engine 31 is arranged at the rear position of the frame 10, which can further reduce the exhaust path, reduce the heat radiation range, and improve the comfort of the driver and the passenger.

[0116] As shown in FIGS. 14 to 16, the vehicle 100 provided in the embodiment further comprises a suspension system 60.

[0117] The suspension system 60 is used to provide shock absorption for the vehicle 100. Specifically, the suspension system 60 comprises a front suspension 62 and a rear suspension 61. The front suspension 62 is arranged at the front end of the frame 10 and connected with the front wheel support 14, that is, the front suspension 62 is connected between the front wheel support 14 and the frame 10, and is used to provide shock absorption for the front wheel 91. The rear suspension 61 is arranged at the rear end of the frame 10 and connected with the rear wheel support 15, that is, the rear suspension 61 is connected between the rear wheel support 15 and the frame 10, and is used to provide shock absorption for the rear wheel 92.

[0118] On the basis of the above-mentioned embodiment, in the embodiment, the rear suspension 61 comprises a rear left suspension and a rear right suspension, and the rear left suspension and the rear right suspension are symmetrically arranged on both sides of the frame 10 along the second direction. For the convenience of describing the embodiment, one of the rear left suspension or the rear right suspension is taken as an example for description.

[0119] In the embodiment, the rear right suspension comprises an upper swing arm 611 and a lower swing arm 612, wherein the upper swing arm 611 and the lower swing arm 612 are arranged upward and downward along the third direction, and the frame 10 is provided with a rear suspension mounting plate 16. One end of the upper swing arm 611 is connected with the rear suspension mounting plate 16, and two first connection points are formed between the upper swing arm 611 and the rear suspension mounting plate 16. The other end of the upper swing arm 611 is connected with the upper part of the rear wheel support 15, and two second connection points are formed.

[0120] Further, in the first direction, the length L1 between the two first connection points is greater than the length L2 between the two second connection points. In this way, the length L1 of the connection between the upper swing arm 611 and the vehicle frame 10 is greater than the length L2 of the connection between the upper swing arm 611 and the rear wheel support 15, which can improve the reliability and stability of the connection between the rear suspension 61 and the vehicle frame 10.

[0121] On the basis of the above-mentioned embodiments, the lower swing arm 612 in the embodiments of the present application comprises a first branch arm 6121 and a second branch arm 6122, one end of the first branch arm 6121 and the second branch arm 6122 is connected to the lower part of the rear wheel support 15, one end of the first branch arm 6121 is connected to the rear suspension mounting plate 16, and forms two third connection points; the other end of the second branch arm 6122 is connected to the vehicle frame 10.

[0122] The rear suspension mounting plate 16 gradually decreases in width from top to bottom in the third direction, and the upper swing arm 611 and the first branch arm 6121 are respectively connected to one rear suspension mounting plate 16 and form a first connection point and a third connection point respectively. In the first direction, the length L1 between the two first connection points is greater than the length L3 between the two third connection points, and in this way, the shock absorbing performance of the rear suspension 61 can be improved.

[0123] Referring to FIG. 18, in the embodiments of the present application, the exhaust pipe 71 extends in the first direction, and the exhaust pipe 71 comprises a first end and a second end arranged oppositely, wherein the first end of the exhaust pipe 71 is in communication with the combustion chamber of the engine 31; the second end of the exhaust pipe 71 extends rearward to the tail end of the vehicle 100 in the first direction, and the second end of the exhaust pipe 71 is in communication with the muffler 72.

[0124] Further, in the second direction, the exhaust pipe 71 is arranged at the middle position of the vehicle frame 10, that is, in the width direction of the vehicle frame 10, the exhaust pipe 71 is arranged at the middle of the vehicle frame 10. In this way, compared with the scheme in the related art in which the exhaust pipe is arranged at one side of the vehicle frame 10, the layout of the vehicle 100 can be optimized, the driver and passenger can be protected from being scalded by the exhaust pipe 71, and the driving safety and comfort can be improved.

[0125] As shown in FIGS. 1, 17-19, in the embodiments of the present application, the intake system 50 is arranged at the front side of the power system 30 in the first direction, and in the second direction, the intake system 50 is arranged above the fuel system 20.

[0126] The intake system 50 further comprises an intake pipe 52 and an intake manifold 53, and the air filter 51 is arranged between the intake pipe 52 and the intake manifold 53 and is in communication with the intake pipe 52 and the intake manifold 53 respectively. The intake pipe 52 is located in the front space 10a, the first end of the intake pipe 52 has an air inlet 54, the second end of the intake pipe 52 extends toward the rear side in the first direction and is in communication with the air inlet end of the air filter 51 to provide air for the air filter 51.

[0127] The intake manifold 53 is located in the rear space 10c, one end of the intake manifold 53 is used to communicate with the air outlet end of the air filter 51, and the other end of the intake manifold 53 is in communication and sealed with the combustion chamber of the engine 31, and the air filtered by the air filter 51 enters the combustion chamber of the engine 31 through the intake manifold 53.

[0128] Exemplarily, the air filter 51 can be a flat plate filter, the air inlet end of which is arranged on the lower cover and located at the bottom of the air filter 51. The air outlet end is arranged on the upper cover and located at the top of the air filter 51, that is, the air flows from bottom to top for filtering.

[0129] The air inlet pipe 52 includes opposite first and second ends, wherein the first end of the air inlet pipe 52 is provided with an air inlet 54 connected to the first main beam 11 through the mounting plate. The air inlet 54 is located at the rear side of the steering rod 81 of the vehicle 100 in the first direction, and the air inlet 54 is located above the first main beam 11 in the second direction, that is, the air inlet 54 is located above the top of the frame 10.

[0130] The second end of the air inlet pipe 52 is connected to the air filter 51 by a clamp and is in communication with the air filter 51. For example, the second end of the air inlet pipe 52 is in communication and sealed with the air inlet end located at the bottom of the air filter 51 to introduce air into the air filter 51 and filter the air from bottom to top along the filter core. The filtered air can flow from the air outlet end of the air filter 51 to the intake manifold 53 and further flow to the combustion chamber of the engine 31 through the intake manifold 53.

[0131] Further, to improve the stability of the engine 31 air intake flow, the air intake system 50 provided by the embodiment of the application further comprises a throttle valve 56 and a pressure stabilizing chamber 55, wherein one end of the pressure stabilizing chamber 55 is in communication with the intake manifold 53, the other end of the pressure stabilizing chamber 55 is in communication with the throttle valve 56, the throttle valve 56 is arranged between the pressure stabilizing chamber 55 and the air filter 51, the throttle valve 56 is in communication with the air outlet end of the air filter 51, and the throttle valve 56 is configured to control the flow of gas flowing into the pressure stabilizing chamber 55.

[0132] Specifically, the pressure stabilizing chamber 55 is L-shaped as a whole, and includes a bottom and a top. In the second direction, the throttle valve 56 is arranged below the pressure stabilizing chamber 55, one side of the throttle valve 56 is in communication with the air outlet end of the air filter 51, and the other side is in communication with the bottom of the pressure stabilizing chamber 55, that is, the throttle valve 56 is used to communicate the pressure stabilizing chamber 55 and the air outlet end of the air filter 51.

[0133] The top of the stable pressure cavity 55 is communicated with the air intake manifold 53. The air intake pipe 52 in the embodiment of the present application can control the air flow to the stable pressure cavity 55 by controlling the opening of the throttle valve 56, thereby controlling the air intake flow of the engine 31. In this way, the air first passes through the throttle valve 56 and then enters the stable pressure cavity 55, and then passes through the air intake manifold 53 to enter the combustion chamber for combustion. In this way, the sufficiency and stability of the air can be ensured.

[0134] On the basis of the above-mentioned embodiments, the air intake pipe 52 in the embodiment of the present application is configured as a hose, which facilitates the arrangement of the air intake pipe 52. In addition, in the first direction, the opening direction of the air inlet 54 is arranged towards the rear side, or in the second direction, the opening of the air inlet 54 is arranged upwards. In this way, the mud and the like splashed during the driving of the vehicle 100 can be prevented from entering the air inlet 54, thereby avoiding the phenomenon of clogging the filter element, and thus the service life and reliability of the air filter 51 can be improved.

[0135] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0136] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification mean that the described embodiment can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments that are explicitly or implicitly described.

[0137] Generally, the terms should be understood at least partially by the usage in the context. For example, at least partially according to the context, the term "one or more" used in the specification can be used to describe any feature, structure or characteristic in the singular sense or can be used to describe a combination of features, structures or characteristics in the plural sense. Similarly, at least partially according to the context, terms such as "a" or "said" can be understood to convey a singular usage or to convey a plural usage.

[0138] It should be easily understood that "on", "above" and "over" in the present disclosure should be interpreted in the broadest way, so that "on" not only means "directly on", but also includes the meaning of "on" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over", but also can include the meaning of "above" or "over" without intermediate features or layers therebetween (i.e. directly on).

[0139] In addition, spatially relative terms, such as "under", "below", "lower", "over", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0140] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle characterized by comprising: The vehicle comprises a frame, a power system, a transmission system and an exhaust system. The frame comprises a front space, a middle space and a rear space in sequence along the driving direction of the vehicle. The power system is arranged in the rear space, and comprises an engine and a gearbox connected with the engine. The transmission system comprises a front transmission shaft, a front axle assembly and a rear axle assembly. The front axle assembly is arranged in the front space. One end of the front transmission shaft extends to the front space along the driving direction of the vehicle and is connected with the front axle assembly.

2. The vehicle of claim 1, wherein The other end of the front transmission shaft extends to the rear space along the driving direction of the vehicle and is connected with the first output end of the gearbox. The rear axle assembly is arranged in the rear space and comprises two rear half shafts. The rear axle assembly is connected with the second output end of the gearbox. The exhaust system is arranged in the rear space and is connected with the engine. The engine comprises an output crankshaft.

4. The vehicle of claim 2, wherein The gearbox comprises an input main shaft. The power system further comprises a transmission device connected with the output crankshaft and the input main shaft.

3. The vehicle according to claim 2, wherein 5. The vehicle of claim 2, wherein The gearbox is arranged at the rear side of the engine along the driving direction of the vehicle. The transmission device, the engine and the gearbox are located on the same side along the width direction of the vehicle. The transmission device is a continuously variable transmission device and comprises a driving wheel, a driven wheel and a synchronous belt. The driving wheel is connected with the output crankshaft and rotates synchronously.

6. The vehicle of claim 5, wherein The driven wheel is connected with the input main shaft and rotates synchronously. The synchronous belt is connected with the driving wheel and the driven wheel to make the driving wheel and the driven wheel rotate synchronously. The gearbox further comprises a secondary shaft, an intermediate shaft, a front output gear shaft, a front output driven bevel gear shaft and a rear output gear shaft.

7. The vehicle of claim 5, wherein The input main shaft is connected with the secondary shaft through meshing gears. The secondary shaft is connected with the intermediate shaft through meshing gears.

8. The vehicle of claim 5, wherein, The intermediate shaft is connected with the front output gear shaft and the rear output gear shaft. The front output driven bevel gear shaft is the first output end of the gearbox and is connected with the front transmission shaft. The rear output gear shaft is the second output end of the gearbox and is connected with the two rear half shafts. The rear output gear shaft is a hollow shaft. The rear output gear shaft is provided with a first transmission gear segment and a second transmission gear segment. The first transmission gear segment and the second transmission gear segment are arranged along the axial direction of the rear output gear shaft. The first transmission gear segment and the second transmission gear segment are connected with the two rear half shafts. The engine further comprises a cylinder head cover. The center of gravity of the cylinder head cover is located between the output crankshaft and the input main shaft along the height direction of the vehicle. The front axle assembly comprises a front axle and two front half shafts. The front axle is connected with the front transmission shaft along the driving direction of the vehicle. Two of the front half shafts are arranged on both sides of the front axle along the vehicle width direction and are respectively in transmission connection with the front axle; The distance between the input main shaft and the front half shaft along the vehicle driving direction is a first distance; The distance between the input main shaft and the rear half shaft along the vehicle driving direction is a second distance, and the ratio of the first distance to the second distance is greater than 6.

9. The vehicle of any one of claims 1-8, wherein, One end of the front transmission shaft along the vehicle driving direction is connected with the front axle and forms a universal joint structure.

10. The vehicle of claim 7, wherein, The front transmission shaft and the transmission case are located on one side along the vehicle width direction; The front transmission shaft extends obliquely along the vehicle driving direction, and the included angle between the front transmission shaft and the vehicle driving direction is an obtuse angle, and the angle of the obtuse angle is between 115° and 150°.

11. The vehicle of claim 1, wherein, The vehicle further comprises front wheels and rear wheels; The front wheels and the vehicle frame form a front wheel shaft center, and the rear wheels and the vehicle frame form a rear wheel shaft center; The power system is arranged close to the rear wheel shaft center along the vehicle driving direction.

12. The vehicle of claim 1, wherein, The exhaust system comprises an exhaust pipe; The exhaust pipe extends along the vehicle driving direction, one end of the exhaust pipe is in communication with the engine, and the other end of the exhaust pipe extends to the tail end of the vehicle; The exhaust pipe is located at the middle position of the vehicle frame along the vehicle width direction.

13. The vehicle of claim 1, wherein, The vehicle further comprises an air intake system and a fuel system; The fuel system is arranged in the middle space; The power system and the fuel system are fixedly connected to the chassis of the vehicle frame; The air intake system is arranged in front of the power system along the vehicle driving direction; The air intake system is located above the fuel system along the vehicle width direction.

14. The vehicle of claim 13, wherein, The air intake system comprises an air intake pipe, an air filter and an air intake manifold in communication; The air intake pipe is located in the front space, and the air filter is arranged between the air intake pipe and the air intake manifold; The air intake manifold is located in the rear space, and the air intake manifold is in communication with the combustion chamber of the engine.

15. The vehicle of claim 14, wherein, The vehicle further comprises a steering system; The steering system is arranged in the front space; The steering system is located in front of the fuel system along the vehicle driving direction; The steering system comprises a steering rod; One end of the air intake pipe is in communication with the air filter, and the other end of the air intake pipe has an air inlet, the air inlet is arranged on the top of the vehicle frame and is located behind the steering rod in the vehicle driving direction.

16. The vehicle of claim 1, wherein The vehicle further comprises front suspension and rear suspension, and the vehicle frame is provided with a rear wheel support and a rear suspension mounting plate; The rear suspension comprises an upper rocker arm and a lower rocker arm, one end of the upper rocker arm is connected with the rear suspension mounting plate and forms two first connection points, the other end of the upper rocker arm is connected with the rear wheel support and forms two second connection points, and the length between the two first connection points is greater than the length between the two second connection points along the vehicle driving direction. The lower rocker arm comprises a first branch and a second branch, one end of the first branch and the second branch is connected to the rear wheel support respectively, the other end of the first branch is connected with the rear suspension mounting plate and forms two third connection points, the other end of the second branch is connected with the frame; The length between the two first connection points is greater than the length between the two third connection points along the driving direction of the vehicle.

17. The vehicle of claim 13, wherein, The vehicle further comprises a heat dissipation system; The heat dissipation system comprises a radiator; The radiator is arranged at the front end of the frame along the driving direction of the vehicle, and the radiator is on the windward side of the vehicle; The radiator is communicated with the engine and is configured to dissipate heat for the engine.

18. The vehicle of claim 17, wherein, The frame comprises two first main beams and two second main beams; The two first main beams correspond to the two second main beams respectively, and the two first main beams are arranged in the vehicle width direction, and the two second main beams are arranged in the vehicle width direction; The first main beam is arranged above the second main beam along the vehicle height direction, and the front end of the first main beam has a bending part and is connected with the front end of the second main beam through the bending part; The radiator is arranged on the bending part.

19. The vehicle of claim 17, wherein, The vehicle further comprises a battery; The fuel system comprises an oil tank, the oil tank is arranged in the middle space, and the oil tank is at least partially mounted on the chassis of the frame; The battery is arranged in the middle space, and the battery is arranged in parallel with the oil tank and is mounted above the chassis of the frame.

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