Multifunctional hydraulic valve plate testing equipment
By integrating conventional and pump-valve plate testing stations onto a single test bench, and using pressure sensors and flow meters to measure the pressure and flow at each oil outlet, the problem of low integration in existing devices is solved, enabling convenient testing of hydraulic valve plates.
Patent Information
- Application Number
- CN202520125465.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing testing devices for hydraulic valve plates in hybrid vehicles have low integration and cannot simultaneously test valve plates with pumps and conventional valve plates, making them inconvenient to use.
Design a multifunctional hydraulic valve plate testing device that integrates the testing stations for conventional valve plates and valve plates with pumps onto a single test bench. Use pressure sensors and flow meters to measure the pressure and flow rate at each oil outlet, and use a drive motor and torque detector to measure the torque value of the valve plate with pumps.
This improved the integration of the device, reduced costs, and enabled convenient testing of conventional and pump-valve plates.
Smart Images
Figure CN223825365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle component testing technology, and in particular to a multifunctional hydraulic valve plate testing device. Background Technology
[0002] With the continuous development of vehicle technology, various new energy vehicles are emerging, among which hybrid vehicles are playing an increasingly important role in the automotive market due to their combination of the advantages of both gasoline and pure electric vehicles. Because the hydraulic valve plates of hybrid vehicles inherently require the motor to rotate and have self-priming oil characteristics, the hydraulic performance of the motor oil pump and valve assembly needs to be tested during their development and production.
[0003] Hybrid vehicles use hydraulic valve plates with pumps, so they require testing with a test bench equipped with a motor and an oil supply pan. However, such test benches with motors cannot test conventional hydraulic valve plates, requiring the use of a separate conventional test bench. This results in low device integration and inconvenient operation.
[0004] Therefore, a multifunctional hydraulic valve plate testing device is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a multifunctional hydraulic valve plate testing device, which aims to solve or improve at least one of the above-mentioned technical problems.
[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a multifunctional hydraulic valve plate testing device, including a test bench, a test station base plate fixedly connected inside the test bench, a plurality of oil outlet pipes fixedly connected to the test station base plate, and a first pressure sensor and a first flow meter fixedly connected to the oil outlet pipes;
[0007] A first oil inlet pipe is fixedly connected to the test bench, and a second pressure sensor and a second flow meter are fixedly connected to the first oil inlet pipe. A conventional valve plate is connected to the test station base plate. The oil inlet of the conventional valve plate is detachably connected to the first oil inlet pipe, and the oil outlet of the conventional valve plate is detachably connected to the oil outlet pipe.
[0008] An oil pan and a drive motor are fixedly mounted on the base plate of the test station. The oil pan is used to install a pump valve plate, and the drive motor is used to drive the pump valve plate to draw in hydraulic oil from the oil pan. A torque detector is installed on the output shaft of the drive motor. A connecting oil pipe is detachably connected to the oil outlet of the pump valve plate, and the connecting oil pipe is detachably connected to the oil outlet pipeline.
[0009] Optionally, a drive shaft is rotatably connected to the side wall of the oil pan, and a torque detector is provided between the output shaft of the drive motor and the drive shaft. The two ends of the torque detector are respectively fixed to the output shaft of the drive motor and the drive shaft through couplings. The pump valve plate is installed in the oil pan by multiple screws, and the drive shaft is connected to the connecting shaft on the pump valve plate by a spline.
[0010] Optionally, a tooling plate is fixed to the side wall of the oil basin near the drive shaft. The tooling plate has multiple oil passage holes. When the pump valve plate is installed in the oil basin, the multiple oil outlet holes on the pump valve plate are respectively connected to the multiple oil passage holes. The connecting oil pipe is threaded onto the oil passage holes.
[0011] Optionally, multiple third pressure sensors are fixedly connected to the tooling plate, and the multiple third pressure sensors are respectively set to correspond one-to-one with the multiple oil passage holes and are used to measure the oil pressure in the oil passage holes; multiple fourth oil pipes are also fixedly connected to the test station base plate, and a fourth pressure sensor is fixedly connected to the fourth oil pipe, and the fourth oil pipe is detachably connected to the oil outlet of the conventional valve plate.
[0012] Optionally, a hydraulic station is provided on one side of the test bench. The oil outlet of the hydraulic station is fixedly connected to and connected to a second oil inlet pipe and a first oil inlet pipe via an oil pipe. Valves are fixedly connected to the first oil inlet pipe and the second oil inlet pipe respectively. The first oil inlet pipe and the second oil inlet pipe extend into the test bench respectively. The second oil inlet pipe is fixedly connected to and connected to the side wall of the oil pan.
[0013] Optionally, an intermediate oil collection basin is fixedly connected inside the test bench. The intermediate oil collection basin is located below the test station base plate. Several oil leakage holes are opened on the test station base plate. An oil return hole is opened at the bottom of the intermediate oil collection basin. An oil return pipe is fixedly connected to and connected to the oil return hole. A valve is installed on the oil return pipe. The end of the oil return pipe away from the intermediate oil collection basin is fixedly connected to and connected to the oil tank in the hydraulic station.
[0014] Optionally, the bottom of the intermediate oil collection basin is V-shaped, and the oil return hole is located at the lowest point of the intermediate oil collection basin.
[0015] Optionally, an L-shaped partition is fixedly connected inside the test bench. The bottom of the L-shaped partition is fixedly connected to the top of the test station base plate, and the two ends of the L-shaped partition are respectively fixedly connected to the two adjacent inner walls of the test bench. The drive motor is located in the space formed by the L-shaped partition and the two adjacent inner walls of the test bench.
[0016] This utility model discloses the following technical effects: When testing a conventional valve plate, the conventional valve plate is placed on the test station base plate, and the oil inlet of the conventional valve plate is connected to the first oil inlet pipe, and the oil outlet is connected to the oil outlet pipeline, so that the flow rate and pressure at the oil inlet end and each oil outlet end of the conventional valve plate can be tested separately; when testing a valve plate with a pump, the valve plate with a pump is placed in an oil basin, and its oil outlet is connected to the oil outlet pipeline by connecting oil pipes. The valve plate with the pump is driven by a drive motor, and the torque value at different speeds is measured by a torque detector. The outlet flow rate and pressure at each oil outlet are measured by the first pressure sensor and the first flow meter on the oil outlet pipeline. This application integrates the test station for conventional valve plates and the test station for valve plates with pumps on a single test bench. The first pressure sensor and the first flow meter on the oil outlet pipeline can test the oil outlet pressure and flow rate of both test stations, improving the integration of the device and reducing the device cost. Attached Figure Description
[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the test bench in this utility model;
[0020] Figure 3 This is a partial top cross-sectional view of the test bench in this utility model;
[0021] Figure 4 This is a schematic diagram of the internal structure of the present invention, which is separated by an L-shaped partition.
[0022] Figure 5 This is a schematic diagram of the oil pan and drive motor in this utility model;
[0023] Figure 6 This is a schematic diagram of the internal structure of the oil basin in this utility model;
[0024] Figure 7 This is a schematic diagram of the lower platform structure in this utility model;
[0025] Figure 8 This is a schematic diagram of the structure of the intermediate oil collection basin in this utility model;
[0026] Figure 9 This is a schematic diagram of the upper platform structure in this utility model.
[0027] In the diagram: 1. Test bench; 1-1. Upper bench; 1-2. Lower bench; 2. Test station base plate; 3. Oil outlet pipe; 4. First pressure sensor; 5. First flow meter; 6. First oil inlet pipe; 7. Conventional valve plate; 8. Oil pan; 9. Drive motor; 10. Torque detector; 11. Connecting oil pipe; 12. Drive shaft; 13. Coupling; 14. Tooling plate; 15. Third pressure sensor; 16. Fourth oil pipe; 17. Fourth pressure sensor; 18. Hydraulic station; 19. Intermediate oil collection pan; 20. Oil return hole; 21. L-shaped partition; 22. Valve plate with pump; 23. Second oil inlet pipe; 25. Oil discharge valve; 26. Oil inlet valve; 27. Heater; 28. Liquid level sensor; 29. Temperature sensor; 30. Oil mist collector; 31. Oil temperature controller; 32. Electrical control console. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] Reference Figures 1-9 This utility model provides a multifunctional hydraulic valve plate testing device, including a test bench 1, a test station base plate 2 fixedly connected inside the test bench 1, a plurality of oil outlet pipes 3 fixedly connected on the test station base plate 2, and a first pressure sensor 4 and a first flow meter 5 fixedly connected on the oil outlet pipes 3.
[0031] A first oil inlet pipe 6 is fixedly connected to the test bench 1. A second pressure sensor and a second flow meter (not shown in the figure) are fixedly connected to the first oil inlet pipe 6. A conventional valve plate 7 is connected to the test station base plate 2. The oil inlet of the conventional valve plate 7 is detachably connected to the first oil inlet pipe 6, and the oil outlet of the conventional valve plate 7 is detachably connected to the oil outlet pipe 3. The conventional valve plate 7 has multiple oil outlets. Each oil outlet of the conventional valve plate 7 is connected to the matching oil outlet pipe 3 as needed.
[0032] An oil pan 8 and a drive motor 9 are fixedly mounted on the base plate 2 of the test station. The oil pan 8 is used to mount a pump-valve plate 22, and the drive motor 9 is used to drive the pump-valve plate 22 to draw hydraulic oil into the oil pan 8. A torque detector 10 is installed on the output shaft of the drive motor 9. A connecting oil pipe 11 is detachably connected to the oil outlet of the pump-valve plate 22, and the connecting oil pipe 11 is detachably connected to the oil outlet pipe 3. The torque detector 10 can monitor the torque and speed transmitted by the drive motor 9 in real time.
[0033] In this embodiment, both the ends of the first oil inlet pipe 6 and the oil outlet pipe 3 are rotatably connected with screw heads. When testing the conventional valve plate 7, the oil inlet of the conventional valve plate 7 is threadedly connected to the first oil inlet pipe 6 by screw heads, and the oil outlet of the conventional valve plate 7 is threadedly connected to the oil outlet pipe 3. When testing the valve plate 22 with a pump, the connecting oil pipe 11 is threadedly connected to the oil outlet pipe 3 by screw heads.
[0034] In this embodiment, a vertical partition is fixed to the test station base plate 2, which divides the upper space of the test bench 1 into two test stations: one is a conventional valve plate test station, and the other is a pump-valve plate test station. The oil pan 8 and the drive motor 9 are located on the pump-valve plate test station. A mounting plate is provided on the conventional valve plate test station, and multiple threaded mounting holes are opened on the mounting plate. The conventional valve plate 7 is fixed to the mounting plate with screws. The oil outlet pipe 3, the first pressure sensor 4, and the first flow meter 5 are located on the conventional valve plate test station. The connecting oil pipe 11 passes through the vertical partition, with one end located on the conventional valve plate test station and the other end located on the pump-valve plate test station.
[0035] Reference Figure 2 , Figures 5-6 In some optional embodiments, a drive shaft 12 is rotatably connected to the side wall of the oil pan 8. A torque detector 10 is installed between the output shaft of the drive motor 9 and the drive shaft 12. The two ends of the torque detector 10 are respectively fixed to the output shaft of the drive motor 9 and the drive shaft 12 via couplings 13. A pump valve plate 22 is installed inside the oil pan 8 by multiple screws, and the drive shaft 12 is connected to the connecting shaft on the pump valve plate 22 via a spline. The torque detector 10 is fixed to the test station base plate 2.
[0036] In this embodiment, a groove is provided on the connecting shaft on the pump valve plate 22, and a convex key is fixed in the groove. The end of the drive shaft 12 is provided with a keyway that matches the convex key. The drive shaft 12 is inserted into the groove so that the keyway matches and connects with the convex key. Therefore, when the drive motor 9 is started, it can drive the impeller of the pump on the pump valve plate 22 to rotate.
[0037] In some optional embodiments, a tooling plate 14 is fixedly attached to the side wall of the oil pan 8 near the drive shaft 12. The tooling plate 14 has multiple oil passage holes. When the pump valve plate 22 is installed in the oil pan 8, the multiple oil outlet holes on the pump valve plate 22 are respectively connected to the multiple oil passage holes. The oil passage holes are threaded with connecting oil pipes 11.
[0038] In some optional embodiments, a plurality of third pressure sensors 15 are fixedly connected to the tooling plate 14. Each of the third pressure sensors 15 is respectively configured to correspond one-to-one with a plurality of oil passage holes and is used to measure the oil pressure within the oil passage holes; see reference. Figure 2 Multiple fourth oil pipes 16 are also fixedly connected to the test station base plate 2. A fourth pressure sensor 17 is fixedly connected to the fourth oil pipe 16. The fourth oil pipe 16 is detachably connected to the oil outlet of the conventional valve plate 7.
[0039] The end of the fourth oil pipe 16 is rotatably connected with a screw head. When some oil outlets on the conventional valve plate 7 only need to be tested for pressure, the oil outlets are threadedly connected to the fourth oil pipe 16.
[0040] Reference Figure 1 , Figures 3-4 In some optional embodiments, a hydraulic station 18 is provided on one side of the test bench 1. The oil outlet of the hydraulic station 18 is fixedly connected to and connected to a second oil inlet pipe 23 and a first oil inlet pipe 6 via an oil pipe. Valves are fixedly connected to the first oil inlet pipe 6 and the second oil inlet pipe 23 respectively. The first oil inlet pipe 6 and the second oil inlet pipe 23 extend into the test bench 1 respectively. The second oil inlet pipe 23 is fixedly connected to and connected to the side wall of the oil pan 8.
[0041] The hydraulic power unit 18, also known as a hydraulic pump station, is driven by a motor to rotate an oil pump. The pump draws oil from the tank and pumps it out, converting mechanical energy into the pressure energy of the hydraulic oil. The hydraulic oil, through an integrated block (or valve assembly), is regulated in direction, pressure, and flow by hydraulic valves and then transmitted via external pipelines to the cylinders or motors of the hydraulic machinery. This controls the direction, force, and speed of the hydraulic actuator, driving various hydraulic machines to perform work. The hydraulic power unit 18 is an independent hydraulic device that supplies oil according to the requirements of the drive unit (main unit) and controls the direction, pressure, and flow of the oil. It is suitable for various hydraulic machines where the main unit and hydraulic device can be separated. Users only need to connect the hydraulic power unit to the actuators (cylinders and motors) on the main unit with oil pipes, and the hydraulic machinery can perform various prescribed actions and work cycles (specific details are existing technology and will not be elaborated here).
[0042] Reference Figure 5In this embodiment, the oil pan 8 is equipped with a drain valve 25 on its side, which can be opened to drain the oil completely as needed. An inlet valve 26 is also provided on the side of the oil pan 8, which can be opened to supply oil to the test oil pan as needed. The inlet valve 26 is connected to the hydraulic station via a second inlet pipe 23. A heater 27 is provided on the side of the oil pan 8 to heat the oil pan 8 as required. A level sensor 28 is provided on the back of the oil pan 8 to measure the level of the test oil pan in real time. A temperature sensor 29 is also provided on the back of the oil pan 8 to measure the temperature of the oil in the test oil pan in real time.
[0043] Reference Figures 7-8 In some optional embodiments, an intermediate oil collection basin 19 is fixedly connected inside the test bench 1. The intermediate oil collection basin 19 is located below the test station base plate 2. Several oil leakage holes are opened on the test station base plate 2. An oil return hole 20 is opened at the bottom of the intermediate oil collection basin 19. An oil return pipe is fixedly connected to and connected to the oil return hole 20. A valve is installed on the oil return pipe. The end of the oil return pipe away from the intermediate oil collection basin 19 is fixedly connected to and connected to the oil tank in the hydraulic station 18.
[0044] In some alternative embodiments, the bottom of the intermediate oil collection basin 19 is V-shaped, and the oil return hole 20 is located at the lowest point of the intermediate oil collection basin 19.
[0045] In this embodiment, the test bench 1 includes an upper bench 1-1 and a lower bench 1-2. The bottom of the upper bench 1-1 is fixedly connected to the test station base plate 2; the top of the lower bench 1-2 is fixedly connected to the intermediate oil collection basin 19.
[0046] The lower frame 1-2 consists of a lower profile welding frame, a lower door assembly, and a lower oil collection basin. The lower profile welding frame is welded to the top of the lower oil collection basin, and the lower door assembly is welded to the lower profile welding frame, thus forming a rectangular frame structure. Multiple casters are installed at the bottom of the lower oil collection basin. Several ventilation holes are opened on the lower door assembly for heat dissipation at the bottom. The lower oil collection basin is used to collect oil that may leak abnormally. An oil drain port is provided at the bottom of the lower oil collection basin, and a plug is installed on the oil drain port.
[0047] The intermediate oil collection basin 19 is welded inside the lower profile welding frame. The intermediate oil collection basin 19 is configured as a V-shaped structure with an inclined surface to guide and collect the hydraulic oil generated during testing. The bottom of the intermediate oil collection basin 19 is provided with an oil return hole 20, on which a threaded seat or flange seat is welded. The threaded seat or flange seat is used to connect the hydraulic joint and the oil return pipe. The oil collected in the intermediate oil collection basin 19 flows back to the oil tank through the oil return pipe at the bottom.
[0048] The upper frame 1-1 consists of door assemblies and an upper profile welding frame. The door assemblies are installed around the upper profile welding frame, and their dimensions match the dimensions of the frame. The door assemblies are double-layered, consisting of an outer swing door assembly and a slightly inner transparent sliding door assembly. The transparent sliding door assembly blocks oil droplets generated during testing, ensuring they flow completely inside the testing chamber. Safety locks are installed at the junction of the outer swing door and the upper profile welding frame to prevent accidental opening during high-temperature testing. A viewing window on the outer door allows observation of the internal testing conditions. This double-layered door structure prevents oil droplets from spilling onto the outside floor when the door is opened, while ensuring visible, safe, and reliable testing operation.
[0049] Reference Figures 2-3 In some optional embodiments, an L-shaped partition 21 is fixedly connected inside the test bench 1. The bottom of the L-shaped partition 21 is fixedly connected to the top of the test station base plate 2, and the two ends of the L-shaped partition 21 are respectively fixedly connected to the two adjacent inner walls of the test bench 1. The drive motor 9 is located in the space formed by the L-shaped partition 21 and the two adjacent inner walls of the test bench 1.
[0050] Insulation cotton is fixed on the L-shaped partition 21. The insulation board separates the temperature of the front test chamber from the temperature of the motor at the rear of the pump test station, protecting the motor and torque meter from alarms or malfunctions due to overheating.
[0051] In this embodiment, oil mist will be formed on the test bench during testing, especially during high-temperature testing, a large amount of oil mist will be generated. Therefore, an oil mist collector 30 is installed on the top of the test bench. The oil mist collector 30 is connected to the test bench through a hose and is used to collect and purify the oil mist in the test chamber.
[0052] In this embodiment, the operation of the equipment and the entire production process are controlled by the electronic control console 32. Simultaneously, the console collects and processes the operational data of each mechanism and signals from sensors such as pressure, flow rate, temperature, liquid level, and speed. The electronic control console 32 is connected and communicates with the hydraulic station 18, oil temperature controller 31, and test bench via cables. The oil temperature controller 31 has heating and cooling functions, capable of heating or cooling the oil in the hydraulic station 18. The oil temperature controller 31 is connected to the oil tank in the hydraulic station 18 via hydraulic pipelines (specific details are existing technology and will not be elaborated here).
[0053] In use, when performing a conventional valve plate 7 test, the conventional valve plate 7 is fixed to the mounting plate of the test station base plate 2 with screws. The oil inlet of the conventional valve plate 7 is connected to the screw thread at the end of the first oil inlet pipe 6. Each oil outlet of the conventional valve plate 7 is connected to the screw thread at the end of the oil outlet pipe 3 or the screw thread at the end of the fourth oil pipe 16. When only the pressure needs to be tested at the oil outlet, this oil outlet is connected to the fourth oil pipe 16. When both pressure and flow need to be tested simultaneously, the oil outlet is connected to the oil outlet pipe 3. Hydraulic oil that meets the requirements for pressure, flow, temperature, etc., is supplied through the hydraulic station 18. The data from each sensor is recorded to complete the test.
[0054] When testing the pump-valve plate 22, the pump-valve plate 22 is installed in the oil pan 8 with screws. Each oil outlet of the pump-valve plate 22 is aligned and connected to each oil passage hole of the tooling plate 14. The oil outlet that needs to test pressure and flow simultaneously is connected to the connecting oil pipe 11 by thread. The other end of the connecting oil pipe 11 is connected to the oil outlet line 3 by thread. Oil is supplied to the oil pan 8 through the hydraulic station 18. The pump-valve plate 22 is immersed in hydraulic oil. The drive motor 9 is started, and the data of each sensor is recorded to realize the test.
[0055] During the test, the oil flowing out from the oil outlet pipe 3, the fourth oil pipe 16 and the oil basin 8 leaks into the intermediate oil collection basin 19 through the oil leakage hole on the test station base plate 2, and then flows back into the oil tank of the hydraulic station 18 through the intermediate oil collection basin 19 to achieve recycling.
[0056] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0057] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A multifunctional hydraulic valve plate testing device, characterized in that: It includes a test bench (1), a test station base plate (2) is fixedly connected inside the test bench (1), a plurality of oil outlet pipes (3) are fixedly connected on the test station base plate (2), and a first pressure sensor (4) and a first flow meter (5) are fixedly connected on the oil outlet pipes (3). The test bench (1) is fixedly connected to a first oil inlet pipe (6), and a second pressure sensor and a second flow meter are fixedly connected to the first oil inlet pipe (6). A conventional valve plate (7) is connected to the test station base plate (2). The oil inlet of the conventional valve plate (7) is detachably connected to the first oil inlet pipe (6), and the oil outlet of the conventional valve plate (7) is detachably connected to the oil outlet pipe (3). An oil pan (8) and a drive motor (9) are fixedly connected to the test station base plate (2). The oil pan (8) is used to install a pump valve plate (22). The drive motor (9) is used to drive the pump valve plate (22) to draw in hydraulic oil from the oil pan (8). A torque detector (10) is installed on the output shaft of the drive motor (9). A connecting oil pipe (11) is detachably connected to the oil outlet of the pump valve plate (22). The connecting oil pipe (11) is detachably connected to the oil outlet pipeline (3).
2. The multifunctional hydraulic valve plate testing equipment according to claim 1, characterized in that: The oil pan (8) is rotatably connected to a drive shaft (12) on its side wall. A torque detector (10) is provided between the output shaft of the drive motor (9) and the drive shaft (12). The two ends of the torque detector (10) are fixedly connected to the output shaft of the drive motor (9) and the drive shaft (12) respectively through a coupling (13). A pump valve plate (22) is installed in the oil pan (8) by multiple screws. The drive shaft (12) is connected to the connecting shaft on the pump valve plate (22) by a spline.
3. The multifunctional hydraulic valve plate testing equipment according to claim 2, characterized in that: A tooling plate (14) is fixedly connected to the inner wall of the oil pan (8) near the drive shaft (12). The tooling plate (14) has multiple oil passage holes. When the pump valve plate (22) is installed in the oil pan (8), the multiple oil outlet holes on the pump valve plate (22) are respectively connected to the multiple oil passage holes. The connecting oil pipe (11) is threaded onto the oil passage holes.
4. The multifunctional hydraulic valve plate testing equipment according to claim 3, characterized in that: Multiple third pressure sensors (15) are fixedly connected to the tooling plate (14). The multiple third pressure sensors (15) are respectively set one-to-one with the multiple oil passage holes and are used to measure the oil pressure in the oil passage holes. Multiple fourth oil pipes (16) are also fixedly connected to the test station base plate (2). A fourth pressure sensor (17) is fixedly connected to the fourth oil pipe (16). The fourth oil pipe (16) is detachably connected to the oil outlet of the conventional valve plate (7).
5. The multifunctional hydraulic valve plate testing equipment according to claim 1, characterized in that: A hydraulic station (18) is provided on one side of the test bench (1). The oil outlet of the hydraulic station (18) is connected to a second oil inlet pipe (23) and a first oil inlet pipe (6) by an oil pipe. Valves are fixed to the first oil inlet pipe (6) and the second oil inlet pipe (23). The first oil inlet pipe (6) and the second oil inlet pipe (23) extend into the test bench (1). The second oil inlet pipe (23) is fixed to and connected to the side wall of the oil pan (8).
6. The multifunctional hydraulic valve plate testing equipment according to claim 1, characterized in that: An intermediate oil collection basin (19) is fixedly connected inside the test bench (1). The intermediate oil collection basin (19) is located below the test station base plate (2). Several oil leakage holes are opened on the test station base plate (2). An oil return hole (20) is opened at the bottom of the intermediate oil collection basin (19). An oil return pipe is fixedly connected and connected to the oil return hole (20). A valve is installed on the oil return pipe. The end of the oil return pipe away from the intermediate oil collection basin (19) is fixedly connected and connected to the oil tank in the hydraulic station (18).
7. The multifunctional hydraulic valve plate testing equipment according to claim 6, characterized in that: The bottom of the intermediate oil collection basin (19) is V-shaped, and the return oil hole (20) is located at the lowest point of the intermediate oil collection basin (19).
8. The multifunctional hydraulic valve plate testing equipment according to claim 1, characterized in that: An L-shaped partition (21) is fixedly connected inside the test bench (1). The bottom of the L-shaped partition (21) is fixedly connected to the top of the test station base plate (2). The two ends of the L-shaped partition (21) are respectively fixedly connected to the two adjacent inner walls of the test bench (1). The drive motor (9) is located in the space formed by the L-shaped partition (21) and the two adjacent inner walls of the test bench (1).