Wet clutch hydraulic system test bed and method

Abstract

The invention relates to the technical field of vehicle hydraulic transmission, and discloses a wet clutch hydraulic system test bench and method, the wet clutch hydraulic system test bench comprises a bench, the top end of the bench is fixedly connected with an oil tank, the bottom end of the bench is fixedly connected with a motor module, and the motor module is communicated with the oil tank; the oil way assembly comprises a heating device and two oil ways, the heating device is arranged on the oil tank and used for controlling the temperature of hydraulic oil, the two oil ways are fixedly connected to the two sides of the top end of the rack respectively, and the oil ways communicate with the oil tank and the motor module; and the data acquisition control system is arranged on the rack and is used for controlling the two oil paths so as to simultaneously realize output of two different control oil pressures and display test data. The device is convenient to operate and accurate in data, and the test efficiency and precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle hydraulic transmission, and in particular to a wet clutch hydraulic system test bench and method. Background Art

[0002] The wet clutch is an important transmission component in high-power hydraulic mechanical transmission devices, and its working state directly affects the safe and reliable operation of the equipment. The wet clutch mainly relies on the friction force generated by the extrusion of the friction pair to transmit torque, and the engagement oil pressure is a control factor of the torque size. In the wet clutch experiment, the clutch state is regulated by controlling the engagement oil pressure and the motor speed. However, the existing oil pressure control method is to regulate the engagement oil pressure by manually rotating the control valve, which cannot accurately obtain the required engagement oil pressure. At the same time, during the experiment, it is necessary to pay attention to the control valve oil pressure data, and the operation is cumbersome. During the experiment, there are also certain requirements for the temperature of the hydraulic oil, but manual control cannot meet the requirements for controlling its temperature.

[0003] In summary, although the clutch engagement oil pressure control operation is currently available, there are problems such as inconvenient operation and inaccurate data during the experiment, and the control measures need to be optimized.

[0004] Therefore, there is an urgent need for a wet clutch hydraulic system test bench and method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a wet clutch hydraulic system test bench and method to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a wet clutch hydraulic system test bench, comprising a bench,

[0007] The top end of the platform is fixedly connected to an oil tank, the bottom end of the platform is fixedly connected to a motor module, and the motor module is in communication with the oil tank;

[0008] An oil circuit assembly, comprising a temperature increasing device and two oil circuits, wherein the temperature increasing device is arranged on the oil tank for controlling the temperature of the hydraulic oil, the two oil circuits are respectively fixedly connected to both sides of the top of the platform, and the oil circuits are connected to the oil tank and the motor module;

[0009] The data acquisition control system is arranged on the test bench and is used to control the two oil circuits so as to realize the output of two different control oil pressures at the same time and display the test data.

[0010] According to a wet clutch hydraulic system test bench provided by the present invention, the oil circuit comprises:

[0011] An integrated module and a plastic pipe clamp, wherein the integrated module and the plastic pipe clamp are respectively fixedly connected to one side of the top of the platform, the plastic pipe clamp is fixedly connected with a return oil passage, one end of the return oil passage is connected to the clutch oil inlet, and the other end of the return oil passage is communicated with the integrated module through a second hydraulic filter, and the integrated module is connected with an output oil passage, and the output oil passage is connected to the clutch oil outlet;

[0012] A first proportional relief valve and a second proportional relief valve are fixedly connected to the top and side wall of the integrated module, respectively; the first proportional relief valve is connected to the oil tank through the second oil passage; and the second proportional relief valve is connected to the oil tank through the first oil passage;

[0013] The integrated module is in communication with the motor module.

[0014] According to a wet clutch hydraulic system test bench provided by the present invention, the motor module comprises:

[0015] The motor is fixedly connected to the bottom end of the test stand, and a gear pump is installed on the motor. The oil inlet of the gear pump is connected to the oil tank through two second oil pipes, and the oil outlet of the gear pump is connected to the two integrated modules respectively through two third oil pipes, and a third hydraulic filter is installed on the third oil pipe.

[0016] According to a wet clutch hydraulic system test bench provided by the present invention, the temperature increasing device comprises: a heating device and a thermocouple, and the heating device and the thermocouple are respectively installed on the oil tank.

[0017] According to a wet clutch hydraulic system test bench provided by the present invention, the data acquisition control system includes: a control panel installed on one side of the bench, a temperature display screen, two flow display screens and two pressure gauges, and the thermocouple is connected to the temperature display screen.

[0018] According to a wet clutch hydraulic system test bench provided by the present invention, a pressure sensor and a flow regulating valve are installed on the integrated module, and a flow sensor is installed on the output oil channel.

[0019] According to a wet clutch hydraulic system test bench provided by the present invention, a first hydraulic filter is installed on the top of the integrated module, and the first hydraulic filter is connected to the integrated module through a third oil passage.

[0020] According to a wet clutch hydraulic system test bench provided by the present invention, the gear pump includes a large pump and a small pump, the oil supply of the large pump is 23L / min, and the oil supply of the small pump is 10L / min.

[0021] According to a wet clutch hydraulic system test bench provided by the present invention, the hydraulic oil adopts anti-wear hydraulic oil, and the temperature of the hydraulic oil is 40°C-60°C.

[0022] A wet clutch hydraulic system test method comprises the following steps:

[0023] Connect the oil circuit to the clutch oil inlet and outlet;

[0024] Heat the hydraulic oil to the required temperature through the heating device, then turn off the heating device and start the motor module for testing;

[0025] During the test, the data acquisition and control system is used to display the test data and control the test;

[0026] After the test is completed, the motor module is turned off and the well hydraulic oil is recovered into the tank.

[0027] Compared with the prior art, the present invention has the following advantages and technical effects:

[0028] The present invention provides a wet clutch hydraulic system test bench and method, which has a stable oil pressure output function through the set bench, oil tank and motor module, can save manpower and simplify operation requirements; it has two different control oil circuits, which can simultaneously realize the output requirements of two different control oil pressures; the temperature of the hydraulic oil is adjusted by a heating device, which effectively solves the problem of high viscosity of low-temperature hydraulic oil; through the set data acquisition control system, the oil temperature, flow rate and oil pressure data in the hydraulic system can be displayed in real time, which is convenient for recording during the test. This application is easy to operate and the data is accurate, which improves the test efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0030] Figure 1 This is a schematic diagram of the distribution of two pipelines of the present invention;

[0031] Figure 2 It is a first side view of the overall structure of the present invention;

[0032] Figure 3 It is a second side view of the overall structure of the present invention;

[0033] Among them, 1. Test bench; 2. Plastic pipe clamp; 3. Return oil channel; 4. Pressure sensor; 5. Flow control valve; 6. Integrated module; 7. First proportional relief valve; 8. Second proportional relief valve; 9. Output oil channel; 10. First oil pipe; 11. Flow sensor; 12. Thermocouple; 13. Heating device; 14. Liquid level meter; 15. Oil tank; 16. First oil channel; 17. Second oil channel; 18. Motor; 19. Gear pump; 20. First hydraulic filter; 21. Third oil channel; 22. Second hydraulic filter; 23. Second oil pipe; 24. Third oil pipe; 25. Control panel; 26. Temperature display screen; 27. Flow display screen; 28. Pressure gauge; 29. ​​Third hydraulic filter. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] Reference Figure 1-Figure 3 The present invention provides a wet clutch hydraulic system test bench, comprising a bench 1,

[0037] The top of the rack 1 is fixedly connected with an oil tank 15, and the bottom of the rack 1 is fixedly connected with a motor module, which is in communication with the oil tank 15;

[0038] The oil circuit assembly includes a heating device and two oil circuits. The heating device is arranged on the oil tank 15 to control the temperature of the hydraulic oil. The two oil circuits are respectively fixedly connected to both sides of the top of the platform 1, and the oil circuits are connected to the oil tank 15 and the motor module.

[0039] The data acquisition control system is arranged on the test bench 1, and is used to control the two oil circuits so as to realize the output of two different control oil pressures at the same time, and display the test data.

[0040] As an optional implementation, the oil circuit includes:

[0041] The integrated module 6 and the plastic pipe clamp 2 are respectively fixedly connected to one side of the top of the platform 1, and the plastic pipe clamp 2 is fixedly connected with a return oil passage 3, one end of the return oil passage 3 is connected to the clutch oil inlet, and the other end of the return oil passage 3 is connected to the integrated module 6 through the second hydraulic filter 22. The integrated module 6 is connected with an output oil passage 9, and the output oil passage 9 is connected to the clutch oil outlet;

[0042] The top and side walls of the integrated module 6 are respectively fixedly connected with a first proportional relief valve 7 and a second proportional relief valve 8. The first proportional relief valve 7 is connected to the oil tank 15 through a second oil passage 17, and the second proportional relief valve 8 is connected to the oil tank 15 through a first oil passage 16.

[0043] The integrated module 6 is in communication with the motor module.

[0044] As an optional implementation, the motor module includes:

[0045] The motor 18 is fixedly connected to the bottom end of the test bench 1, and a gear pump 19 is installed on the motor 18. The oil inlet of the gear pump 19 is connected to the oil tank 15 through two second oil pipes 23, and the oil outlet of the gear pump 19 is connected to the two integrated modules 6 through two third oil pipes 24 respectively, and a third hydraulic filter 29 is installed on the third oil pipe 24.

[0046] As an optional implementation, the temperature increasing device includes: a heating device 13 and a thermocouple 12 , and the heating device 13 and the thermocouple 12 are respectively installed on the oil tank 15 .

[0047] In one embodiment of the present invention, the hydraulic oil is heated by the provided heating device 13 and the thermocouple 12 .

[0048] As an optional implementation, the data acquisition control system includes: a control panel 25 installed on one side of the stand 1 , a temperature display screen 26 , two flow display screens 27 and two pressure gauges 28 , and the thermocouple 12 is connected to the temperature display screen 26 .

[0049] In one embodiment of the present invention, the above display screens and heating devices 13 are connected to the control panel 25 through cables, and the control panel 25 controls the normal operation of the entire test bench.

[0050] As an optional implementation, a pressure sensor 4 and a flow regulating valve 5 are installed on the integrated module 6 , and a flow sensor 11 is installed on the output oil channel 9 .

[0051] In one embodiment of the present invention, the pressure sensor 4 is connected to the pressure gauge 28 , and the flow sensor 11 is connected to the flow display screen 27 .

[0052] Specifically, a liquid level gauge 14 is also provided on the oil tank 15 .

[0053] As an optional implementation, a first hydraulic filter 20 is installed on the top of the integrated module 6 , and the first hydraulic filter 20 is connected to the integrated module 6 through a third oil passage 21 .

[0054] As an optional implementation, the gear pump 19 includes a large pump and a small pump, the large pump supplies oil at 23 L / min, and the small pump supplies oil at 10 L / min.

[0055] In one embodiment of the present invention, the two pumps have the function of supplying oil simultaneously or separately.

[0056] As an optional implementation, the hydraulic oil uses anti-wear hydraulic oil, and the temperature of the hydraulic oil is 40°C-60°C.

[0057] In one embodiment of the present invention, the hydraulic oil is replaced once every 6 months.

[0058] A wet clutch hydraulic system test method comprises the following steps:

[0059] Connect the oil circuit to the clutch oil inlet and outlet;

[0060] Heat the hydraulic oil to the required temperature through the heating device, then turn off the heating device and start the motor module for testing;

[0061] During the test, the data acquisition and control system is used to display the test data and control the test;

[0062] After the test is completed, the motor module is turned off and the hydraulic oil is recovered into the oil tank 15.

[0063] Specific test process:

[0064] The output oil channel 9 is connected to the clutch oil inlet, and the return oil channel 3 is connected to the clutch oil outlet; the control panel 25 starts the heating device 13, and the oil temperature is observed through the temperature display screen 26. After the hydraulic oil is heated to a suitable temperature, the motor 18 is started to drive the gear pump 19. The gear pump 19 sucks oil from the oil tank 15 through the second oil pipe 23, and the hydraulic oil flows into the integrated module 6 through the third oil channel 21 and the third hydraulic filter 29. The pressure sensor 4 on the integrated module 6 detects the oil pressure. The hydraulic oil flows into the output oil channel 9 through the flow regulating valve 5 after the constant pressure effect of the first proportional relief valve 7. The flow regulating valve 5 manually adjusts the hydraulic oil flow; the output oil channel 9 is equipped with a flow sensor 11 to detect the output flow. The hydraulic oil enters the clutch oil inlet through the output oil channel 9 to provide control oil pressure. Then the hydraulic oil enters the integrated module 6 through the clutch oil outlet through the return oil channel 3, the second hydraulic filter 22 and the first oil pipe 10, and returns to the oil tank 15 after passing through the second proportional relief valve 8 and the first hydraulic filter 20.

[0065] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A wet clutch hydraulic system test bench, comprising a bench (1), characterized in that: The top end of the platform (1) is fixedly connected to an oil tank (15), and the bottom end of the platform (1) is fixedly connected to a motor module, and the motor module is in communication with the oil tank (15); An oil circuit assembly, comprising a temperature increasing device and two oil circuits, wherein the temperature increasing device is arranged on the oil tank (15) and is used to control the temperature of the hydraulic oil, the two oil circuits are respectively fixedly connected to both sides of the top of the platform (1), and the oil circuits are connected to the oil tank (15) and the motor module; A data acquisition control system is arranged on the test bench (1) and is used to control the two oil circuits so as to simultaneously output two different control oil pressures and display test data.

2. A wet clutch hydraulic system test bench according to claim 1, characterized in that: The oil circuit comprises: An integrated module (6) and a plastic pipe clamp (2), wherein the integrated module (6) and the plastic pipe clamp (2) are respectively fixedly connected to one side of the top end of the platform (1); a return oil passage (3) is fixedly connected to the plastic pipe clamp (2); one end of the return oil passage (3) is connected to the clutch oil inlet; the other end of the return oil passage (3) is connected to the integrated module (6) through a second hydraulic filter (22); an output oil passage (9) is connected to the integrated module (6); and the output oil passage (9) is connected to the clutch oil outlet; A first proportional relief valve (7) and a second proportional relief valve (8) are fixedly connected to the top and side wall of the integrated module (6), respectively; the first proportional relief valve (7) is connected to the oil tank (15) through a second oil passage (17); and the second proportional relief valve (8) is connected to the oil tank (15) through a first oil passage (16); The integrated module (6) is in communication with the motor module.

3. A wet clutch hydraulic system test bench according to claim 2, characterized in that: The motor module comprises: A motor (18) is fixedly connected to the bottom end of the platform (1), and a gear pump (19) is installed on the motor (18). The oil inlet of the gear pump (19) is connected to the oil tank (15) through two second oil pipes (23), and the oil outlet of the gear pump (19) is connected to the two integrated modules (6) through two third oil pipes (24), and a third hydraulic filter (29) is installed on the third oil pipe (24).

4. A wet clutch hydraulic system test bench according to claim 1, characterized in that: The temperature increasing device comprises: a heating device (13) and a thermocouple (12); the heating device (13) and the thermocouple (12) are respectively installed on the oil tank (15).

5. A wet clutch hydraulic system test bench according to claim 4, characterized in that: The data acquisition control system comprises: a control panel (25) installed on one side of the platform (1), a temperature display screen (26), two flow display screens (27) and two pressure gauges (28), and the thermocouple (12) is connected to the temperature display screen (26).

6. A wet clutch hydraulic system test bench according to claim 2, characterized in that: The integrated module (6) is installed with a pressure sensor (4) and a flow regulating valve (5), and the output oil channel (9) is installed with a flow sensor (11).

7. A wet clutch hydraulic system test bench according to claim 2, characterized in that: A first hydraulic filter (20) is installed at the top of the integrated module (6), and the first hydraulic filter (20) is connected to the integrated module (6) through a third oil passage (21).

8. The wet clutch hydraulic system test bench according to claim 3, characterized in that: The gear pump (19) comprises a large pump and a small pump, the large pump supplies oil at a rate of 23 L / min, and the small pump supplies oil at a rate of 10 L / min.

9. A wet clutch hydraulic system test bench according to claim 1, characterized in that: The hydraulic oil is anti-wear hydraulic oil, and the temperature of the hydraulic oil is 40℃-60℃.

10. A wet clutch hydraulic system test method, applicable to a wet clutch hydraulic system test bench as claimed in claim 1, characterized in that: The following steps are involved: Connect the oil circuit to the clutch oil inlet and outlet; Heat the hydraulic oil to the required temperature through the heating device, then turn off the heating device and start the motor module for testing; During the test, the data acquisition and control system is used to display the test data and control the test; After the test is completed, the motor module is turned off and the well hydraulic oil is recovered into the oil tank (15).

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