Mining vehicle transmission system, mining vehicle power system and mining vehicle

Abstract

The invention discloses a mining vehicle transmission system, a mining vehicle power system and a mining vehicle, and relates to the technical field of mining trackless transportation equipment.The mining vehicle transmission system comprises an engine, a hydraulic power pump and a motor, the output end of the engine is connected with the input end of the hydraulic power pump, and the output end of the motor is connected with the output end of the hydraulic power pump; one oil inlet of the hydraulic power pump is used for being communicated with an oil cylinder, two oil ports of the hydraulic power pump are communicated with two oil ports of the motor respectively, the rotating speed of the engine can be adjusted, the displacement of oil in the hydraulic power pump can be adjusted in a stepless mode, and the flow direction of the oil in the hydraulic power pump can be adjusted. The output end of the motor is used for being connected with the input end of a front wheel assembly and / or a rear wheel assembly of the vehicle. According to the mining vehicle transmission system, the mining vehicle power system and the mining vehicle, the driving experience of the vehicle is better, and the applicability in a roadway is higher.

Description

Technical Field

[0001] The invention relates to the technical field of trackless mining transport equipment, and in particular to a mining vehicle transmission system, a mining vehicle power system and a mining vehicle. Background Art

[0002] At present, the requirements for underground trackless auxiliary transportation equipment in coal mines are getting higher and higher. The transmission system of underground trackless auxiliary transportation equipment in coal mines refers to the intermediate device that transmits the power generated by the power system to the actuator. The transmission modes of the transmission system of underground trackless auxiliary transportation equipment in coal mines can be roughly divided into three categories: mechanical transmission, liquid transmission (hydraulic transmission and hydrostatic transmission) and electric transmission. Most of the current underground trackless auxiliary transportation equipment only uses one transmission mode, and most of them are manual transmissions. Not only is the driving experience poor, but also the applicability is poor in the complex environment of underground tunnels. Therefore, there is an urgent need for a mining vehicle transmission system, mining vehicle power system and mining vehicle with better driving experience and stronger applicability in the tunnel. Summary of the invention

[0003] The purpose of the present invention is to provide a mining vehicle transmission system, a mining vehicle power system and a mining vehicle to solve the problems existing in the above-mentioned prior art, so that the driving experience of the vehicle is better and the applicability in the tunnel is stronger.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a mining vehicle transmission system, comprising: an engine, a hydraulic power pump and a motor, wherein the output end of the engine is connected to the input end of the hydraulic power pump, an oil inlet of the hydraulic power pump is used to communicate with the oil cylinder, two oil ports of the hydraulic power pump are respectively communicated with two oil ports of the motor, the output end of the motor is used to connect with the input end of the front wheel assembly and / or the rear wheel assembly of the vehicle, the engine can provide power for the hydraulic power pump, the hydraulic power pump can input oil into the motor and drive the motor to rotate, the speed of the engine can be adjusted to change the speed of the motor, the displacement of the oil in the hydraulic power pump can be infinitely adjusted to change the maximum value of the motor speed when the engine speed is constant, and the flow direction of the oil in the hydraulic power pump can be adjusted and can change the rotation direction of the motor output shaft.

[0006] In some embodiments, the hydraulic power pump includes a variable pump, a reversing valve and an oil replenishing pump, the variable pump is an axial piston pump, the power input ends of the variable pump and the oil replenishing pump are respectively connected to the power output end of the engine, the variable pump has a first oil port and a second oil port, the motor has a third oil port and a fourth oil port, the first oil port and the second oil port are respectively connected to the third oil port and the fourth oil port of the motor, the variable mechanism of the variable pump has two first adjustment ports, the reversing valve has an oil inlet, an oil outlet and two second adjustment ports, The oil inlet of the oil replenishment pump is used to communicate with the oil cylinder, and the oil outlet of the oil replenishment pump can be communicated with the first oil port and the second oil port of the variable pump; the oil inlet of the reversing valve is communicated with the oil outlet of the oil replenishment pump, and the oil discharge port of the reversing valve is used to communicate with the oil cylinder, and the two second adjustment ports of the reversing valve are respectively communicated with the two first adjustment ports on the variable pump, and the reversing valve can control the connection and disconnection between the two first adjustment ports 7 and the two second adjustment ports, and change the inclination angle of the swash plate in the variable mechanism to adjust the displacement and oil delivery direction of the variable pump.

[0007] In some embodiments, an oil suction filter and an oil replenishment filter are further included, wherein the oil inlet of the oil suction filter is used to communicate with the oil cylinder, the oil outlet of the oil suction filter is communicated with the oil inlet of the oil replenishment pump, the oil inlet of the oil replenishment filter is communicated with the oil outlet of the oil replenishment pump, and the oil outlet of the oil replenishment filter is communicated with the first oil port and the second oil port of the variable pump.

[0008] In some embodiments, a power distributor is further included, wherein the output end of the engine is connected to the input end of the power distributor, and the power distributor has two output ends, and the two output ends of the power distributor are respectively connected to the input end of the variable pump and the input end of the oil replenishment pump.

[0009] In some embodiments, a driver is further included, wherein the input end of the driver is connected to the output end of the motor, and the driver has one or two output ends. When the driver has one output end, the output end is used to connect to the input end of the rear wheel assembly or the front wheel assembly. When the driver has two output ends, the two output ends are respectively connected to the input ends of the front wheel assembly and the rear wheel assembly.

[0010] The present invention also provides a mining vehicle power system, comprising a frame, a front wheel assembly, a rear wheel assembly and the above-mentioned mining vehicle transmission system, wherein the front wheel assembly and the rear wheel assembly are arranged on the frame and are respectively close to the front end and the rear end of the frame, and the engine, the hydraulic power pump and the motor are all fixedly connected to the frame.

[0011] In some embodiments, it also includes a driver, the input end of the driver is connected to the output end of the motor, and the driver has one or two output ends; it also includes a front drive steering axle, a front leaf spring, a rear drive axle and a rear leaf spring, the front leaf spring is fixedly connected to the frame and close to the front end of the frame, the front drive steering axle is fixedly connected to the front leaf spring, the output end of the front drive steering axle is connected to the output end of the front wheel assembly, the rear leaf spring is fixedly connected to the frame and close to the rear end of the frame, the rear drive axle is fixedly connected to the rear leaf spring, the output end of the rear drive axle is connected to the input end of the rear wheel assembly, when the driver has one output end, the output end of the driver is used to connect to the input end of the front drive steering axle or the rear drive axle, when the driver has two output ends, the two output ends are respectively connected to the input ends of the front drive steering axle and the rear drive axle.

[0012] In some embodiments, a radiator and a power mechanism are further included, wherein the power mechanism includes a shell and the engine, the shell is fixedly connected to the frame, the engine is fixedly connected inside the shell, a heat exhaust port is provided on the shell, and the heat inlet of the radiator corresponds to the position of the heat exhaust port of the shell.

[0013] In some embodiments, a shock-absorbing pad is further included, which is fixedly connected to the frame and contacts the side surface of the housing of the power mechanism.

[0014] The present invention also provides a mining vehicle, comprising a vehicle body and the above-mentioned vehicle power system, wherein the vehicle power system is arranged on the vehicle body.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] The mining vehicle transmission system provided by the present invention adopts a dual transmission mode of hydraulic transmission and mechanical transmission. The engine drives the hydraulic power pump to operate and outputs the oil to the motor, so that the oil drives the motor to operate. The output end of the motor can output power to the front wheel assembly and / or the rear wheel assembly, thereby driving the vehicle to travel. Moreover, the forward or reverse transmission of the motor can be controlled by adjusting the flow direction of the oil in the hydraulic power pump, thereby controlling the rotation direction of the front wheel assembly and / or the rear wheel and realizing the forward and backward movement of the vehicle; the gear position of the vehicle can also be infinitely adjusted by infinitely adjusting the displacement of the hydraulic power pump, and the acceleration or deceleration of the vehicle in the speed range of the corresponding gear position can be realized by adjusting the engine speed. Compared with the existing manual gear mining vehicles, this makes the vehicle more suitable for operation in the complex environment of the tunnel. Moreover, compared with the traditional mechanical transmission manual gear vehicle, the driver can switch the gear position without stepping on the clutch when driving, so that the whole vehicle operation has the driving experience of an automatic gear vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the transmission system of a mining vehicle in some embodiments of the present invention;

[0019] Figure 2 A side view of a mining vehicle power system in some embodiments of the present invention;

[0020] Figure 3 A side view of a mining vehicle power system in some embodiments of the present invention;

[0021] Figure 4 A linear ratio relationship diagram of a reversing valve in some embodiments of the present invention;

[0022] In the figure: 1. Engine; 2. Hydraulic power pump; 3. Variable pump; 4. First oil port; 5. Second oil port; 6. Variable mechanism; 7. First adjustment port; 8. Reversing valve; 9. Second adjustment port; 10. Oil replenishment pump; 11. Cooling device; 12. Motor; 13. Cylinder; 14. Oil suction filter; 15. Oil replenishment filter; 16. Power distributor; 17. Driver; 18. Connecting shaft; 19. Front drive steering axle; 20. Rear drive axle; 21. Front wheel assembly; 22. Rear wheel assembly; 23. Front leaf spring; 24. Rear leaf spring; 25. Radiator; 26. Frame; 27. Power mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a mining vehicle transmission system, a mining vehicle power system and a mining vehicle to solve the problems existing in the above-mentioned prior art, so that the driving experience of the vehicle is better and the applicability in the tunnel is stronger.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] This embodiment provides a mining vehicle transmission system, such as Figure 1 As shown, it includes: an engine 1, a hydraulic power pump 2 and a motor 12, the output end of the engine 1 is connected to the input end of the hydraulic power pump 2, an oil inlet of the hydraulic power pump 2 is used to communicate with the oil cylinder 13, two oil ports of the hydraulic power pump 2 are respectively connected with two oil ports of the motor 12, the output end of the motor 12 is used to connect with the input end of the front wheel assembly 21 and / or the rear wheel assembly 22 of the vehicle, the engine 1 can provide power for the hydraulic power pump 2, the hydraulic power pump 2 can input oil into the motor 12 and drive the motor 12 to rotate, the speed of the engine 1 can be adjusted to change the speed of the motor 12, the displacement of the oil in the hydraulic power pump 2 can be infinitely adjusted to change the maximum speed of the motor 12 when the speed of the engine 1 is constant, and the flow direction of the oil in the hydraulic power pump 2 can be adjusted and can change the rotation direction of the output shaft of the motor 12.

[0028] The mining vehicle transmission system provided in this embodiment adopts a dual transmission mode of hydraulic transmission and mechanical transmission. The engine 1 drives the hydraulic power pump 2 to operate and outputs oil to the motor 12, so that the oil drives the motor 12 to operate. The output end of the motor 12 can output power to the front wheel assembly 21 and / or the rear wheel assembly 22, thereby driving the vehicle to travel. Moreover, the forward or reverse rotation of the motor 12 can be controlled by adjusting the flow direction of the oil in the hydraulic power pump 2, thereby controlling the rotation direction of the front wheel assembly 21 and / or the rear wheel assembly 22 and realizing the forward and backward movement of the vehicle; the gear position of the vehicle can also be infinitely adjusted by infinitely adjusting the displacement of the hydraulic power pump 2, and the acceleration or deceleration of the vehicle within the speed range of the corresponding gear position can be realized by adjusting the speed of the engine 1. Compared with the existing manual transmission mining vehicles, this makes the vehicle more suitable for running in the complex environment of the tunnel. For example, the original manual transmission vehicle needs to switch to a low gear when climbing a slope. For example, the first gear of the manual transmission vehicle corresponds to 0km / h-20km / h, and the second gear corresponds to 0km / h-40km / h. The vehicle needs to switch to the first gear when climbing a slope. At this time, the maximum driving speed is 20km / h. If you want to drive the vehicle at a speed of 25km / h, it cannot be achieved. If it is switched to the second gear, it will be disadvantageous for the vehicle to climb the slope. By adopting the vehicle transmission system of the present invention, the displacement of the hydraulic power pump 2 can be infinitely adjusted, so that the vehicle can travel in the speed adjustment range of 0km / h-25km / h, which is convenient for climbing and can increase the speed. Moreover, compared with the traditional mechanical transmission manual transmission vehicle, the driver does not need to step on the clutch to switch the gear when driving, so that the whole vehicle operation has the driving experience of an automatic transmission vehicle.

[0029] In the first embodiment of the present embodiment, the hydraulic power pump 2 includes a variable pump 3, a reversing valve 8 and a charge pump 10. The variable pump 3 is an axial piston pump. The power input ends of the variable pump 3 and the charge pump 10 are connected to the power output end of the engine 1. The variable pump 3 has a first oil port 4 and a second oil port 5. The motor 12 has a third oil port and a fourth oil port. The first oil port 4 and the second oil port 5 are respectively connected to the third oil port and the fourth oil port of the motor 12. The variable mechanism 6 of the variable pump 3 has two first adjustment ports 7. The reversing valve 8 has an oil inlet, an oil outlet and two second adjustment ports. Port 9, the oil inlet of the oil replenishment pump 10 is used to communicate with the cylinder 13, and the oil outlet of the oil replenishment pump 10 can be communicated with the first oil port 4 and the second oil port 5 of the variable pump 3; the oil inlet of the reversing valve 8 is communicated with the oil outlet of the oil replenishment pump 10, and the oil discharge port of the reversing valve 8 is used to communicate with the cylinder 13, and the two second adjustment ports 9 of the reversing valve 8 are respectively connected with the two first adjustment ports 7 on the variable pump 3. The reversing valve 8 can control the connection and disconnection between the two first adjustment ports 7 and the two second adjustment ports 9 respectively, and change the inclination angle of the swash plate in the variable mechanism 6 to adjust the displacement and oil delivery direction of the variable pump 3. When the vehicle moves forward, the oil replenishment pump 10 sucks oil from the oil cylinder 13 and inputs the oil into the variable pump 3 and the reversing valve 8. The oil delivery direction of the reversing valve 8 is manually controlled to input the oil into a first adjustment port 7. At this time, the swash plate in the variable mechanism 6 tilts to one side, and the oil in the variable pump 3 flows from the first oil port 4 to the third oil port of the motor 12, and then returns to the variable pump 3 from the fourth oil port of the motor 12. When the oil passes through the motor 12, it drives the motor 12 to transfer forward, and the output shaft of the motor 12 rotates the torque to the front wheel assembly 21 and / or the rear wheel assembly 22, so that The vehicle moves forward; when the vehicle needs to move backward, the oil replenishment pump 10 sucks oil from the oil cylinder 13 and inputs the oil into the variable pump 3 and the reversing valve 8, and the oil delivery direction of the reversing valve 8 is manually controlled to input the oil into another first adjustment port 7. At this time, the swash plate in the variable mechanism 6 tilts to the other side (opposite to the tilt direction when the vehicle moves forward), and the oil in the variable pump 3 passes from the second oil port 5 to the fourth oil port of the motor 12 and returns to the variable pump 3 from the third oil port of the motor 12. At this time, the motor 12 reverses, and the oil discharged from the motor 12 returns to the variable pump 3. When the speed of the motor 12 (i.e., the vehicle speed) needs to be adjusted, if the swash plate angle is constant, the vehicle speed can be changed by increasing or decreasing the output power of the engine 1; if the speed range of the vehicle needs to be changed (i.e., shifting), the tilt angle of the swash plate in the variable mechanism 6 on the variable pump 3 can be manually controlled when the vehicle moves forward or backward, thereby changing the displacement of the variable pump 3, thereby realizing stepless adjustment of the vehicle speed. Among them, the hydraulic power pump 2 also includes a cooling device 11, an oil return port is provided on the hydraulic power pump 2, and an oil return port is also provided on the motor 12. The oil return port on the hydraulic power pump 2 and the oil return port of the motor 12 are both connected to the oil inlet of the cooling device 11, and the oil outlet of the cooling device 11 is connected to the oil cylinder 13.When the vehicle speed decreases or stops, the pressure in the hydraulic power pump 2 decreases. Opening the oil return port on the motor 12 or the variable pump 3 allows the excess oil to flow back to the cylinder 13 after being cooled by the cooling device 11, thereby maintaining pressure balance.

[0030] Specifically, the engine 1 is an explosion-proof engine, and an operating lever is provided on the reversing valve 8. The output direction of the reversing valve 8 can be switched by adjusting the operating lever. The linear proportional relationship is as follows: Figure 4 And as shown in Table 1.

[0031] Table 1 Linear proportional relationship table of reversing valve

[0032]

[0033] B = resistance point before switching to inlet pressure

[0034] In the table, the operating torque of the L-type actuator refers to the operating torque of the actuator under mechanical control, and the operating torque of the G, H, and J-type actuators refers to the operating torque of the actuator under electronic control.

[0035] It should be noted that, in addition to the reversing valve and the variable pump, a variable vane pump or a screw pump can also be used to achieve stepless adjustment of the displacement of the hydraulic power pump.

[0036] In one implementation of this embodiment, the mining vehicle transmission system provided in this embodiment further includes an oil suction filter 14 and an oil replenishment filter 15, the oil inlet of the oil suction filter 14 is used to communicate with the oil cylinder 13, the oil outlet of the oil suction filter 14 is communicated with the oil inlet of the replenishment pump 10, the oil inlet of the replenishment filter 15 is communicated with the oil outlet of the replenishment pump 10, and the oil outlet of the replenishment filter 15 is communicated with the first oil port 4 and the second oil port 5 of the variable pump 3. The oil suction filter 14 and the oil replenishment filter 15 can filter the oil, filter out dirt particles in the oil, prevent faults such as the jamming of moving parts, scratches on parts and blockage of oil channels, and improve the reliability and stability of the transmission system.

[0037] In one implementation of this embodiment, the mining vehicle transmission system provided in this embodiment also includes a power distributor 16. The output end of the engine 1 is connected to the input end of the power distributor 16. The power distributor 16 has two output ends. The two output ends of the power distributor 16 are respectively connected to the input end of the variable pump 3 and the input end of the oil replenishment pump 10. The power distributor 16 can distribute the power output by the engine 1 to the oil replenishment pump 10 and the variable pump 3 in a certain proportion, so that when the output power of the engine 1 is constant, the variable pump 3 and the oil replenishment pump 10 can operate with different input powers. Among them, the flywheel end of the engine 1 forms the output end and is connected to the input end of the power distributor 16 through a coupling.

[0038] In one embodiment of the present embodiment, the mining vehicle transmission system provided in the present embodiment further includes a driver 17, the input end of the driver 17 is connected to the output end of the motor 12, and the driver 17 has one or two output ends. When the driver 17 has one output end, the output end is used to connect to the input end of the rear wheel assembly 22 or the front wheel assembly 21, and when the driver 17 has two output ends, the two output ends are respectively connected to the input ends of the front wheel assembly 21 and the rear wheel assembly 22. When the vehicle is assembled, if the driver 17 is only connected to the front wheel assembly 21 or the rear wheel assembly 22, the vehicle is a two-wheel drive vehicle. If the vehicle needs to have greater traction to cope with more complex terrain, the driver 17 can be connected to the front wheel assembly 21 and the rear wheel assembly 22 at the same time, and the vehicle is assembled as a four-wheel drive vehicle. Among them, when the vehicle is a two-wheel drive type, it is preferred to connect the driver 17 to the rear wheel assembly 22; the driver 17 is connected to the front wheel assembly 21 and the rear wheel assembly 22 through the connecting shaft 18; the driver 17 is a gear box.

[0039] Embodiment 2

[0040] This embodiment provides a vehicle power system, such as Figure 1-3 As shown, it includes a frame 26, a front wheel assembly 21, a rear wheel assembly 22 and the mining vehicle transmission system in Example 1. The front wheel assembly 21 and the rear wheel assembly 22 are arranged on the frame 26 and are respectively close to the front end and the rear end of the frame 26. The engine 1, the hydraulic power pump 2 and the motor 12 are all fixedly connected to the frame 26.

[0041] The vehicle power system in this embodiment, by adopting a dual transmission mode of hydraulic transmission and mechanical transmission, realizes infinite adjustment of vehicle speed, which is suitable for working in mines and tunnels. Moreover, compared with traditional mechanical transmission manual transmission vehicles, the driver can switch gears without stepping on the clutch during driving, making the whole vehicle operation have the driving experience of automatic transmission vehicles, and the driving experience is better.

[0042] In the first embodiment of the present invention, the mining vehicle transmission system in the first embodiment further includes a driver 17, the input end of the driver 17 is connected to the output end of the motor 12, and the driver 17 has one or two output ends;

[0043] A vehicle power system provided in this embodiment also includes a front drive steering axle 19, a front leaf spring 23, a rear drive axle 20 and a rear leaf spring 24. The front leaf spring 23 is fixedly connected to the frame 26 and is close to the front end of the frame 26. The front drive steering axle 19 is fixedly connected to the front leaf spring 23. The output end of the front drive steering axle 19 is connected to the output end of the front wheel assembly 21. The rear leaf spring 24 is fixedly connected to the frame 26 and is close to the rear end of the frame 26. The rear drive axle 20 is fixedly connected to the rear leaf spring 24. The output end of the rear drive axle 20 is connected to the input end of the rear wheel assembly 22. When the driver 17 has one output end, the output end of the driver 17 is used to be connected to the input end of the front drive steering axle 19 or the rear drive axle 20. When the driver 17 has two output ends, the two output ends are respectively connected to the input ends of the front drive steering axle 19 and the rear drive axle 20. The front leaf spring 23 and the rear leaf spring 24 can reduce the vibration caused by bumps when the vehicle is driving; by assembling the output end of the driver 17 with the front drive steering axle 19 or the rear drive axle 20 separately, or connecting the two output ends of the driver 17 with the front drive steering axle 19 and the rear drive axle 20 respectively, the production of two-wheel drive vehicles and four-wheel drive vehicles can be realized. Among them, the connection between the front wheel assembly 21 and the front drive steering axle 19, and between the rear wheel assembly 22 and the rear drive axle can adopt the connection method in the prior art known to those skilled in the art.

[0044] In one implementation of this embodiment, a vehicle power system provided in this embodiment further includes a radiator 25 and a power mechanism 27. The power mechanism 27 includes a housing, the housing is fixedly connected to the vehicle frame 26, the engine 1 is fixedly connected inside the housing, a heat exhaust port is provided on the housing, and the position of the radiator 25 corresponds to the heat exhaust port of the power mechanism 27. The radiator 25 can exhaust the heat generated by the engine 1, thereby reducing the temperature of the vehicle power system.

[0045] In one implementation of this embodiment, a vehicle power system provided in this embodiment further includes a shock-absorbing pad, which is fixedly connected to the frame 26 and contacts the side of the housing of the power mechanism. The shock-absorbing pad can reduce the vibration transmitted to the frame 26 when the engine 1 in the power system is running, thereby improving the driving experience of the driver.

[0046] Specifically, connecting ears are fixedly provided on both sides of the radiator 25, and each connecting ear is connected to the frame 26 by screws, shock-absorbing pads are provided on both sides of the shell of the power mechanism 27, the power mechanism 27 is fixedly connected to the support seat, and the support seat is connected to the frame 26 by screws, shock-absorbing pads are provided on both sides of the power distributor 16, the power distributor 16 is connected to the frame 26 by bolts, the driver 17 is connected to a crossbeam of the rigid frame 26 by screws, the motor 12 is connected to the input end of the driver 17 through a spline shaft, the front leaf spring 23 and the rear leaf spring 24 are connected to the rigid frame 26 by screws, the front drive steering axle 19 is fixed to the front leaf spring 23 on both sides by U-bolts and nuts, and the rear drive axle 20 is fixed to the rear leaf spring 24 on both sides by U-bolts and nuts.

[0047] Embodiment 3

[0048] This embodiment provides a mining vehicle, including a vehicle body and the vehicle power system of the second embodiment, wherein the vehicle power system is arranged on the vehicle body. The vehicle body is a general term for all other structures of a mining vehicle structure known to the inventor except the vehicle power system of the second embodiment.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A mining vehicle transmission system, characterized in that: include: An engine, a hydraulic power pump and a motor, wherein the output end of the engine is connected to the input end of the hydraulic power pump, an oil inlet of the hydraulic power pump is used to communicate with the oil cylinder, two oil ports of the hydraulic power pump are respectively communicated with two oil ports of the motor, the output end of the motor is used to connect with the input end of the front wheel assembly and / or the rear wheel assembly of the vehicle, the engine can provide power for the hydraulic power pump, the hydraulic power pump can input oil into the motor and drive the motor to rotate, the speed of the engine can be adjusted to change the speed of the motor, the displacement of the oil in the hydraulic power pump can be infinitely adjusted to change the maximum speed of the motor when the engine speed is constant, and the flow direction of the oil in the hydraulic power pump can be adjusted and can change the rotation direction of the motor output shaft.

2. The mining vehicle transmission system according to claim 1, characterized in that: The hydraulic power pump includes a variable pump, a reversing valve and an oil replenishing pump. The variable pump is an axial piston pump. The power input ends of the variable pump and the oil replenishing pump are connected to the power output end of the engine. The variable pump has a first oil port and a second oil port. The motor has a third oil port and a fourth oil port. The first oil port and the second oil port are respectively connected to the third oil port and the fourth oil port of the motor. The variable mechanism of the variable pump has two first adjustment ports. The reversing valve has an oil inlet, an oil outlet and two second adjustment ports. The oil replenishing pump The oil inlet is used to communicate with the oil cylinder, and the oil outlet of the oil replenishing pump can be communicated with the first oil port and the second oil port of the variable pump; the oil inlet of the reversing valve is communicated with the oil outlet of the oil replenishing pump, and the oil discharge port of the reversing valve is used to communicate with the oil cylinder, and the two second adjustment ports of the reversing valve are respectively communicated with the two first adjustment ports on the variable pump, and the reversing valve can control the connection and disconnection between the two first adjustment ports 7 and the two second adjustment ports, and change the inclination angle of the swash plate in the variable mechanism to adjust the displacement and oil delivery direction of the variable pump.

3. The mining vehicle transmission system according to claim 2, characterized in that: It also includes an oil suction filter and an oil replenishment filter, the oil inlet of the oil suction filter is used to communicate with the oil cylinder, the oil outlet of the oil suction filter is communicated with the oil inlet of the oil replenishment pump, the oil inlet of the oil replenishment filter is communicated with the oil outlet of the oil replenishment pump, and the oil outlet of the oil replenishment filter is communicated with the first oil port and the second oil port of the variable pump.

4. The mining vehicle transmission system according to claim 2, characterized in that: It also includes a power distributor, the output end of the engine is connected to the input end of the power distributor, the power distributor has two output ends, and the two output ends of the power distributor are respectively connected to the input end of the variable pump and the input end of the oil replenishment pump.

5. The mining vehicle transmission system according to claim 2, characterized in that: It also includes a driver, the input end of the driver is connected to the output end of the motor, and the driver has one or two output ends. When the driver has one output end, the output end is used to connect to the input end of the rear wheel assembly or the front wheel assembly. When the driver has two output ends, the two output ends are respectively connected to the input ends of the front wheel assembly and the rear wheel assembly.

6. A mining vehicle power system, characterized in that: The mining vehicle comprises a frame, a front wheel assembly, a rear wheel assembly and a transmission system for a mining vehicle according to any one of claims 1 to 5, wherein the front wheel assembly and the rear wheel assembly are arranged on the frame and are respectively close to the front end and the rear end of the frame, and the engine, the hydraulic power pump and the motor are all fixedly connected to the frame.

7. The mining vehicle power system according to claim 6, characterized in that: It also includes a driver, the input end of the driver is connected to the output end of the motor, and the driver has one or two output ends; it also includes a front drive steering axle, a front leaf spring, a rear drive axle and a rear leaf spring, the front leaf spring is fixedly connected to the frame and close to the front end of the frame, the front drive steering axle is fixedly connected to the front leaf spring, the output end of the front drive steering axle is connected to the output end of the front wheel assembly, the rear leaf spring is fixedly connected to the frame and close to the rear end of the frame, the rear drive axle is fixedly connected to the rear leaf spring, the output end of the rear drive axle is connected to the input end of the rear wheel assembly, when the driver has one output end, the output end of the driver is used to connect to the input end of the front drive steering axle or the rear drive axle, when the driver has two output ends, the two output ends are respectively connected to the input ends of the front drive steering axle and the rear drive axle.

8. The mining vehicle power system according to claim 7, characterized in that: It also includes a radiator and a power mechanism, the power mechanism includes a shell, the shell is fixedly connected to the frame, the engine is fixedly connected inside the shell, a heat exhaust port is provided on the shell, and the heat inlet of the radiator corresponds to the position of the heat exhaust port on the shell.

9. The mining vehicle power system according to claim 7, characterized in that: It also includes a shock-absorbing pad, which is fixedly connected to the frame and contacts the side surface of the housing of the power mechanism.

10. A mining vehicle, characterized in that: It comprises a vehicle body and a vehicle power system as described in any one of claims 6 to 9, wherein the vehicle power system is arranged on the vehicle body.

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