Transmission system and site vehicle

Abstract

The transmission system comprises a front universal joint, a front transmission shaft, a clutch, a gearbox, a rear transmission shaft, a rear universal joint, a four-wheel drive transfer case, a front power shaft and a rear power shaft, the front universal joint is connected with the front transmission shaft, and the front transmission shaft, the clutch, the gearbox and the rear transmission shaft are sequentially connected. The rear transmission shaft is connected with a four-wheel-drive transfer case through a rear universal joint, the four-wheel-drive transfer case is connected with a front axle through a front power shaft, and the four-wheel-drive transfer case is connected with a rear axle through a rear power shaft. A hard transmission soft connection structure is adopted, the front universal joint and the rear universal joint are used for meeting the angle change caused by vertical jumping during power transmission, slipping is avoided, larger and more stable driving force can be provided, shaking force is effectively dispersed in the transmission process, the transmission stability of the field vehicle can be effectively improved, the quality is good, and the service life of the field vehicle is prolonged. And the service life is long, the maintenance cost is low, and the user experience is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, concretely relates to a transmission system and field car. BACKGROUND

[0002] Field car usually refers to the vehicle designed for various tasks and activities in the field environment, and the vehicle usually has high off-road performance and adaptability, and can work in complex terrain and bad weather conditions, and the type and design of the field car vary with the purpose.

[0003] At present, the transmission system of the field car mainly adopts the belt transmission mode, the belt transmission is prone to slipping, and the straight connection hard transmission without the balance and stability structure of the buffer power is prone to accidents, and the vibration and torque generated during the driving process of the field car can easily cause the damage of the gearbox, the maintenance cost is very high, and the use of the user is affected. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a transmission system and field car, which solves the above problems in the prior art.

[0005] In order to achieve the above purpose, on the one hand, the utility model adopts the following technical scheme: a transmission system, comprising a front universal joint, a front transmission shaft, a clutch, a gearbox, a rear transmission shaft, a rear universal joint, a four-wheel drive transfer case, a front power shaft and a rear power shaft, one end of the front universal joint is connected with the engine of the field car, the other end of the front universal joint is connected with the front transmission shaft, the front transmission shaft, the clutch, the gearbox and the rear transmission shaft are connected in sequence, the rear transmission shaft is connected with the four-wheel drive transfer case through the rear universal joint, the four-wheel drive transfer case is connected with the front axle of the field car through the front power shaft, and the four-wheel drive transfer case is connected with the rear axle of the field car through the rear power shaft.

[0006] As an optional implementation mode of the above technical scheme, the front universal joint and the rear universal joint are both double-connected universal joints.

[0007] As an optional implementation mode of the above technical scheme, the double-connected universal joint comprises a first yoke, a first connecting piece, a first connecting seat, a connecting short rod, a second yoke, a second connecting piece and a second connecting seat, the first yoke and the first connecting seat are connected through the first connecting piece, the second yoke and the second connecting seat are connected through the second connecting piece, and the two ends of the connecting short rod are connected with the first yoke and the second yoke respectively.

[0008] As an optional implementation mode of the above technical scheme, the first connecting piece and the second connecting piece are both cross connecting shafts.

[0009] As an optional implementation form of the above technical solution, the first yoke, the connecting short rod and the second yoke are integrally formed.

[0010] In another aspect, the utility model discloses the following technical scheme: a site car, including transmission system, still including the frame, be equipped with engine, oil tank, front axle and rear axle on the frame, the output of engine is connected with front universal joint, the oil tank is used for the oil supply for engine, and the frame bottom is equipped with front wheel and rear wheel, and the front wheel is connected with front axle, and the rear wheel is connected with rear axle.

[0011] As an optional implementation form of the above technical solution, the rear end of the frame is provided with a spare tire.

[0012] As an optional implementation form of the above technical solution, the front end of the frame is provided with a front bumper.

[0013] As an optional implementation form of the above technical solution, the frame is provided with a steel wire rope winch.

[0014] As an optional implementation form of the above technical solution, the frame is provided with a steering wheel, and the steering wheel is provided with an electronic power steering mechanism.

[0015] As an optional implementation form of the above technical solution, the surfaces of the front wheel and the rear wheel are provided with anti-skid teeth.

[0016] The utility model has the advantages of:

[0017] The utility model provides a transmission system and site car, it has adopted hard transmission soft connection structure, utilizes front universal joint and rear universal joint to satisfy the angle change caused by up and down bounce when power transmission, not only does not slip but also can provide greater and more stable driving force, effectively disperses the vibration force in the transmission process, can effectively improve the transmission stability of site car, and the torsional moment when driving is not easy direct damage relevant parts, and its quality is good, and not easy to damage, and transmission efficiency is high, and safe and reliable, and long in service life, and low in maintenance cost, and good in user experience. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of site car in an embodiment of the utility model;

[0019] Figure 2 It is the layout structure schematic diagram of front power shaft and rear power shaft in an embodiment of the utility model;

[0020] Figure 3 It is the structure schematic diagram of double connection type universal joint in an embodiment of the utility model.

[0021] In the figure: 1-front universal joint; 2-front transmission shaft; 3-clutch; 4-gearbox; 5-rear transmission shaft; 6-rear universal joint; 7-four-wheel drive transfer case; 8-front power shaft; 9-rear power shaft; 10-front axle; 11-rear axle; 12-double universal joint; 13-frame; 14-oil tank; 15-front wheel; 16-rear wheel; 17-spare tire; 18-front bumper; 19-steering wheel; 20-electronic power steering mechanism. DETAILED DESCRIPTION

[0022] The embodiment provides a transmission system, which comprises a front universal joint 1, a front transmission shaft 2, a clutch 3, a gearbox 4, a rear transmission shaft 5, a rear universal joint 6, a four-wheel drive transfer case 7, a front power shaft 8 and a rear power shaft 9, as shown in the figure. Figure 1 The front universal joint 1 is connected with an engine of the venue vehicle at one end, and the other end of the front universal joint 1 is connected with the front transmission shaft 2; the front transmission shaft 2, the clutch 3, the gearbox 4 and the rear transmission shaft 5 are sequentially connected; the rear transmission shaft 5 is connected with the four-wheel drive transfer case 7 through the rear universal joint 6; the four-wheel drive transfer case 7 is connected with the front axle 10 of the venue vehicle through the front power shaft 8, and the four-wheel drive transfer case 7 is connected with the rear axle 11 of the venue vehicle through the rear power shaft 9. The engine of the venue vehicle adopts a diesel engine, the diesel engine provides power, drives the front transmission shaft 2 to rotate through the front universal joint 1, transmits the power to the clutch 3 through the front transmission shaft 2, drives the rear transmission shaft 5 to rotate through the gearbox 4, transmits the power to the four-wheel drive transfer case 7 through the rear transmission shaft 5 and the rear universal joint 6, transmits the power to the front wheel 15 of the venue vehicle through the front power shaft 8, and transmits the power to the rear wheel 16 of the venue vehicle through the rear power shaft 9.

[0023] Since the transmission system of the existing venue vehicle mainly adopts a belt transmission mode, the belt transmission is prone to slipping, and the venue vehicle is directly connected with hard transmission in the driving process, so that the vibration and the torque generated in the driving process can easily damage the gearbox 4, the maintenance cost is very high, and the use of the user is affected. Therefore, the hard transmission soft connection structure is adopted, the angle change caused by the up and down bouncing during power transmission is met through the front universal joint 1 and the rear universal joint 6, the slipping is avoided, and greater and more stable driving force can be provided, the vibration force is effectively dispersed in the transmission process, the transmission stability of the venue vehicle can be effectively improved, the torsion torque in the driving process is not easy to directly damage the related parts, the quality is good, the damage is not easy, the transmission efficiency is high, the safety is reliable, the service life is long, the maintenance cost is low, and the user experience is good. The transmission system of the utility model can be applied to the venue vehicle of the open type, the semi-closed type and the fully-closed type, and can provide stable power for the venue vehicle.

[0024] Preferably, the front universal joint 1 and the rear universal joint 6 are both double universal joints 12. Universal joints are typically used to transmit power between two shafts with different axes whose relative positions constantly change during operation. A double universal joint 12 connects two shafts that are at an angle or whose relative positions change, allowing the two shafts to transmit power at the same angular velocity. This overcomes the uneven velocity problem of conventional cross-axis universal joints.

[0025] like Figure 3 As shown, specifically, the double-jointed universal joint 12 includes a first coupling fork, a first connecting member, a first connecting seat, a connecting short rod, a second coupling fork, a second connecting member, and a second connecting seat. The first coupling fork and the first connecting seat are connected via the first connecting member, and the second coupling fork and the second connecting seat are connected via the second connecting member. The two ends of the connecting short rod are respectively connected to the first coupling fork and the second coupling fork. The first connecting member and the second connecting member are both cross connecting shafts, and the first coupling fork, the connecting short rod, and the second coupling fork are integrally formed. The utility model utilizes the double-jointed universal joint 12 to transmit power, which can ensure that the instantaneous angular velocity of the output shaft and the input shaft are always equal.

[0026] like Figure 1 and Figure 2 As shown, this embodiment also provides a track vehicle, comprising the aforementioned transmission system, and a frame 13. The frame 13 is equipped with an engine, a fuel tank 14, a front axle 10, and a rear axle 11. The engine's output is connected to the front universal joint 1, and the fuel tank 14 is used to supply fuel to the engine. Two front wheels 15 and two rear wheels 16 are located at the bottom of the frame 13. The front wheels 15 are connected to the front axle 10, and the rear wheels 16 are connected to the rear axle 11. A front power shaft 8 drives the two front wheels 15 through the front axle 10, while a rear power shaft 9 drives the two rear wheels 16 through the rear axle 11. A four-wheel drive transfer case 7 is located in the middle of the frame 13, which drives the four wheels. When road conditions are normal, the two rear wheels 16 are controlled to rotate; when road conditions are poor, the two front wheels 15 and the two rear wheels 16 are controlled to rotate together, making it easier for the track vehicle to navigate muddy or poor roads.

[0027] In one embodiment, a spare tire 17 is provided at the rear end of the vehicle frame 13. If the front wheel 15 or rear wheel 16 is damaged, the spare tire 17 can be used to replace the damaged front wheel 15 or rear wheel 16, allowing the track vehicle to travel smoothly. A front bumper 18 is provided at the front end of the vehicle frame 13, and a wire rope winch is mounted on the frame 13. Preferably, the surfaces of the front and rear wheels 15, 16 are provided with anti-skid teeth, which improves the stability of the track vehicle during driving.

[0028] The vehicle frame 13 is provided with a steering wheel 19, and the steering wheel 19 is provided with an electronic power steering mechanism 20. The basic principle of the electronic power steering mechanism 20 (EPS) is that a torque sensor is connected with a steering shaft (pinion shaft) of the steering wheel 19, when the steering shaft rotates, the torque sensor starts to work, the relative rotation angle displacement of an input shaft and an output shaft under the action of a torsion bar is changed into an electric signal and transmitted to an electronic control unit (ECU), the electronic control unit determines the rotation direction of the motor and the size of the assist current according to the signals of the vehicle speed sensor and the torque sensor, so as to complete the real-time control of the power steering. Therefore, the venue vehicle can easily provide different assist effects of the motor at different vehicle speeds by means of the electronic power steering mechanism 20, so as to ensure that the venue vehicle is light and flexible when steering at low speed, and is stable and reliable when steering at high speed.

[0029] In the description of the present application, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, which can be fixed connection, detachable connection, or integrated; can be mechanical connection or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the communication between two elements or the interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application. In addition, the specific features, structures and the like described in the embodiments are included in at least one embodiment, and those skilled in the art can combine the features of different embodiments without mutual contradiction. The protection scope of the present application is not limited to the above specific embodiments, according to the basic technical concept of the present application, those skilled in the art can think of embodiments without creative labor, which all belong to the protection scope of the present application.

Claims

1. A transmission system characterized by, The transmission system comprises a front universal joint (1), a front transmission shaft (2), a clutch (3), a gearbox (4), a rear transmission shaft (5), a rear universal joint (6), a four-wheel drive transfer case (7), a front power shaft (8) and a rear power shaft (9), one end of the front universal joint (1) is connected with an engine of the off-road vehicle, the other end of the front universal joint (1) is connected with the front transmission shaft (2), the front transmission shaft (2), the clutch (3), the gearbox (4) and the rear transmission shaft (5) are connected in sequence, the rear transmission shaft (5) is connected with the four-wheel drive transfer case (7) through the rear universal joint (6), the four-wheel drive transfer case (7) is connected with a front axle (10) of the off-road vehicle through the front power shaft (8), and the four-wheel drive transfer case (7) is connected with a rear axle (11) of the off-road vehicle through the rear power shaft (9).

2. The transmission system of claim 1, wherein, The front universal joint (1) and the rear universal joint (6) are both double universal joints (12).

3. The transmission system of claim 2, wherein, The double universal joint (12) comprises a first yoke, a first connecting piece, a first connecting seat, a connecting short rod, a second yoke, a second connecting piece and a second connecting seat, the first yoke and the first connecting seat are connected through the first connecting piece, the second yoke and the second connecting seat are connected through the second connecting piece, and the two ends of the connecting short rod are connected with the first yoke and the second yoke respectively.

4. The transmission system of claim 3, wherein, The first connecting piece and the second connecting piece are both cross connecting shafts, and the first yoke, the connecting short rod and the second yoke are integrally formed.

5. A venue vehicle characterized by, The transmission system comprises the transmission system according to any one of claims 1-4, and further comprises a vehicle frame (13), the vehicle frame (13) is provided with an engine, an oil tank (14), a front axle (10) and a rear axle (11), an output end of the engine is connected with the front universal joint (1), the oil tank (14) is used for supplying oil to the engine, the bottom of the vehicle frame (13) is provided with a front wheel (15) and a rear wheel (16), the front wheel (15) is connected with the front axle (10), and the rear wheel (16) is connected with the rear axle (11).

6. The grounds vehicle of claim 5, wherein, The rear end of the vehicle frame (13) is provided with a spare tire (17).

7. The grounds vehicle of claim 5, wherein, The front end of the vehicle frame (13) is provided with a front bumper (18).

8. The grounds vehicle of claim 5, wherein, The vehicle frame (13) is provided with a steel wire rope winch.

9. The grounds vehicle of claim 5, wherein, The vehicle frame (13) is provided with a steering wheel (19), and the steering wheel (19) is provided with an electronic power steering mechanism (20).

10. The grounds vehicle of claim 5, wherein, The surfaces of the front wheel (15) and the rear wheel (16) are provided with anti-skid teeth.

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