Oil pump valve plate testing device

Abstract

The invention discloses an oil pump valve plate testing device which comprises a bedplate weldment, a material moving assembly, a pushing assembly and a guiding assembly are arranged on the bedplate weldment, an oil protection ring is arranged on the periphery of the bedplate weldment, and an oil return hole is formed in the bottom of the bedplate weldment; one end of the pushing assembly is connected with the material moving assembly, and the pushing assembly is used for adjusting the position of the material moving assembly; a sliding plate assembly capable of sliding is arranged on the guide assembly, a torque meter and an NVH vibration sensor are installed on the sliding plate assembly, a spline anti-collision assembly is installed at the bottom of the sliding plate assembly, and the torque meter is connected with an outer spline on an oil pump valve plate through the spline anti-collision assembly. The NVH vibration sensor is used for monitoring rotation data of the oil pump on the oil pump valve plate; a spraying assembly is arranged on the guide assembly, located below the spline anti-collision assembly and used for cleaning the oil pump valve plate. The oil pump valve plate can be automatically connected and centered, manual interference factors can be reduced, the accuracy and consistency of production data are improved, and the production efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil pump testing, and in particular to an oil pump valve plate testing device. Background Art

[0002] Existing hydraulic valve plates of new energy vehicles, especially those of hybrid vehicles, are equipped with mechanical oil pumps. The motor on the vehicle drives the oil pump on the valve plate to rotate, providing the vehicle with corresponding hydraulic pressure to complete functions such as gear shifting and clutching. Before leaving the factory, they need to be tested by a certain method to drive the oil pump to rotate, in order to detect and check whether its performance meets the technical requirements.

[0003] In the current valve plate production and testing process, due to the inherent convex and concave structure of the spline, the conventional operation is to manually install, center and fix with manual bolts, and then drive the mechanical oil pump to rotate by a motor to complete the test. The actual operation process is greatly affected by human factors, and there will be factors such as inadequate installation, installation offset, and insufficient tightening force of the fixing bolts, which ultimately leads to inconsistent test data. In addition, since the splines of the hydraulic valve plate are all manually clamped, the centering process is inefficient and the labor intensity is high, which is not conducive to continuous and mass production. Summary of the invention

[0004] The purpose of the present invention is to provide an oil pump valve plate testing device to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides an oil pump valve plate testing device, comprising a table plate weldment, on which a material moving assembly, a pushing assembly and a guiding assembly are provided, oil protection rings are provided around the table plate weldment, and an oil return hole is provided at the bottom of the table plate weldment; one end of the pushing assembly is connected to the material moving assembly, and the pushing assembly is used to adjust the position of the material moving assembly; a slidable slide plate assembly is provided on the guide assembly, on which a torque meter and an NVH vibration sensor are installed, a spline anti-collision assembly is installed at the bottom of the slide plate assembly, and the torque meter is connected to the external spline on the oil pump valve plate through the spline anti-collision assembly; the NVH vibration sensor is used to monitor the data of oil pump rotation on the oil pump valve plate; a spray assembly is provided on the guide assembly, and the spray assembly is located below the spline anti-collision assembly, and the spray assembly is used to clean the oil pump valve plate.

[0006] Preferably, the guide assembly includes a skateboard guide column fixedly mounted on the table weldment, the top end of the skateboard guide column is fixedly connected to a top plate, a clamping mechanism is mounted on the top plate, and the clamping mechanism is connected to a floating joint on the skateboard assembly via a guide rod; the spray assembly is mounted on the skateboard guide column.

[0007] Preferably, the spray assembly includes two sliding clamps, which are respectively mounted on the two slide guide columns, and a spray fixing plate is fixedly installed between the two sliding clamps; a sliding bearing is installed on the spray fixing plate, a spray guide rod is installed in the sliding bearing, a nozzle block is fixedly installed on one end of the spray guide rod, and a nozzle is installed on the nozzle block; the spray guide rod is a hollow structure, and a hydraulic joint is installed on the other end of the spray guide rod; a pushing assembly is fixedly installed on the spray fixing plate, and the output end of the pushing assembly is fixedly connected to the nozzle block.

[0008] Preferably, the material moving assembly includes a conveying guide rail, which is installed on the table weldment; a material moving base plate is slidably installed on the conveying guide rail, and an automatic pressure head is arranged on the material moving base plate, and the automatic pressure head includes an oil circuit block and a plurality of non-standard hydraulic pressure heads arranged on the oil circuit block; an oil trough channel is provided inside the oil circuit block, and the oil circuit block controls the extension and retraction of the non-standard hydraulic pressure head by switching the valve group; a test oil pan and a fixing pin are provided on the oil circuit block, and the fixing pin is used to guide and position the oil pump valve plate; an oil drain valve and an oil inlet valve are provided at the bottom end of the test oil pan, and a liquid level meter and a thermometer are installed on the test oil pan, the liquid level meter is used to monitor the liquid level in the test oil pan, and the thermometer is used to monitor the temperature in the test oil pan.

[0009] Preferably, the slide assembly comprises a sliding upper base plate, the sliding upper base plate is slidably mounted on the slide guide column, and the clamping mechanism is connected to the sliding upper base plate via a guide rod and a floating joint;

[0010] A lower support column is installed at the bottom end of the sliding upper base plate, a sliding lower base plate is slidably installed on the lower support column, a torque meter seat plate is installed on the sliding lower base plate, and the torque meter is fixed on the torque meter seat plate; a rotating motor is fixedly installed on the sliding upper base plate, the output shaft of the rotating motor passes through the sliding upper base plate and is transmission-connected to the torque meter through an upper coupling; the spline anti-collision assembly is installed on the sliding lower base plate, and the torque meter is transmission-connected to the spline anti-collision assembly through a lower coupling.

[0011] Preferably, a guide column is installed on the sliding lower base plate, and a step is provided on the guide column, and the guide column is used to guide and position the sliding upper base plate; a tooling block is fixedly installed on the bottom end of the sliding lower base plate, and the tooling block is used to contact the oil pump valve plate; an oil passage is provided inside the tooling block, and the oil passage is used to connect with the channel of the oil pump valve plate, and the tooling block is used to install an NVH vibration sensor, a pressure sensor or a flow sensor for detection.

[0012] Preferably, the spline anti-collision assembly includes a conversion shaft, a fixed sleeve on the conversion shaft is provided with a bearing, the conversion shaft is rotatably connected with a bearing sleeve through the bearing, and the top of the conversion shaft is transmission-connected to the lower coupling; a spline sleeve and a spline shaft retaining ring are sequentially sleeved on the outer side of the bottom of the conversion shaft, the spline sleeve is slidably matched with the conversion shaft, the spline shaft retaining ring is fixedly connected to the conversion shaft, a boss is provided at the bottom of the spline shaft retaining ring, and the spline sleeve is limitedly matched with the spline shaft retaining ring through the boss; a spring is provided between the spline shaft retaining ring and the conversion shaft, the top end of the spring contacts the stop platform of the conversion shaft, and the bottom end of the spring contacts the stop platform of the spline sleeve; an external spline is provided at the bottom end of the conversion shaft, and the spline sleeve is provided with an internal spline, and the conversion shaft and the spline sleeve are transmission-matched through the internal spline and the external spline; the spline sleeve is provided with an internal spline, and the internal spline of the spline sleeve is adapted to the external spline on the oil pump valve plate.

[0013] Preferably, a detection switch seat is fixedly connected to the bottom of the bearing sleeve, and a proximity detector is installed on the detection switch seat.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The oil pump valve plate testing device provided by the present invention can automatically connect and align the oil pump valve plate, automatically lock it, and realize fully automatic performance and NVH vibration testing, thereby improving production efficiency, reducing human interference factors, improving the accuracy and consistency of production data, reducing production time, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a structural schematic diagram of the oil pump valve plate testing device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the guide assembly of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the spray assembly of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the material moving assembly of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the skateboard assembly of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the spline anti-collision assembly of the present invention;

[0023] In the figure: 1. Platen weldment; 2. Pushing assembly; 3. Oil guard; 4. Oil return hole; 5. Torque meter; 6. NVH vibration sensor; 7. Slide plate guide column; 8. Top plate; 9. Clamping mechanism; 10. Sliding clamp ring; 11. Spray fixing plate; 12. Spray guide rod; 13. Nozzle block; 14. Nozzle; 15. Hydraulic joint; 17. Conveying guide rail; 18. Material transfer bottom plate; 19. Oil block; 20. Non-standard hydraulic pressure head; 21. Test oil basin; 2 2. Oil drain valve; 23. Oil inlet valve; 24. Liquid level meter; 25. Thermometer; 26. Sliding upper base plate; 27. Lower support column; 28. Sliding lower base plate; 29. ​​Torque meter base plate; 30. Rotating motor; 31. Upper coupling; 32. Lower coupling; 33. Guide column; 34. Fixing block; 35. Conversion shaft; 36. Bearing sleeve; 37. Spline shaft sleeve; 38. Spline shaft retaining ring; 39. Spring; 40. Detection switch seat; 41. Proximity detector. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] like Figures 1 to 6 As shown, the present invention provides an oil pump valve plate testing device, including a table plate weldment 1, on which a material moving assembly, a pushing assembly 2 and a guide assembly are arranged, oil protection rings 3 are arranged around the table plate weldment 1, and an oil return hole 4 is arranged at the bottom of the table plate weldment 1; one end of the pushing assembly 2 is connected to the material moving assembly, and the pushing assembly 2 is used to adjust the position of the material moving assembly; a slidable slide plate assembly is arranged on the guide assembly, and a torque meter 5 and an NVH vibration sensor 6 are installed on the slide plate assembly, and a spline anti-collision assembly is installed at the bottom of the slide plate assembly, and the torque meter 5 is connected to the external spline on the oil pump valve plate through the spline anti-collision assembly; the NVH vibration sensor 6 is used to monitor the noise, vibration, acoustic roughness and other data generated when the oil pump rotates on the oil pump valve plate; a spray assembly is arranged on the guide assembly, and the spray assembly is located below the spline anti-collision assembly, and the spray assembly is used to clean the oil pump valve plate.

[0026] The present invention places the oil pump valve plate on the material transfer assembly, and uses the push assembly 2 to transport the product to the test position and then fix it. The guide assembly is used to automatically align and combine the rotating motor 30 and the spline anti-collision assembly on the slide assembly with the spline shaft of the oil pump valve plate, thereby realizing automatic clamping of the oil pump valve plate. When the rotating motor 30 is powered on and receives the command, the rotating motor 30 drives the oil pump to rotate through the coupling and the torque meter 5, realizing the rotation test of the oil pump and the data collection of torque, hydraulic parameters, and NVH.

[0027] A further optimized solution is that the guide assembly includes a skateboard guide column 7 fixedly mounted on the table weldment 1, the top end of the skateboard guide column 7 is fixedly connected to a top plate 8, a clamping mechanism 9 is mounted on the top plate 8, and the clamping mechanism 9 is connected to the floating joint on the skateboard assembly through a guide rod; the spray assembly is mounted on the skateboard guide column 7.

[0028] A further optimized solution is that the spray assembly includes two sliding clamps 10, which are respectively mounted on two slide guide columns 7, and a spray fixing plate 11 is fixedly installed between the two sliding clamps 10; a sliding bearing is installed on the spray fixing plate 11, and a spray guide rod 12 is installed in the sliding bearing, a nozzle block 13 is fixedly installed at one end of the spray guide rod 12, and a nozzle 14 is installed on the nozzle block 13; the spray guide rod 12 is a hollow structure, and a hydraulic joint 15 is installed at the other end of the spray guide rod 12; a pushing assembly 2 is fixedly installed on the spray fixing plate 11, and the output end of the pushing assembly 2 is fixedly connected to the nozzle block 13.

[0029] To further optimize the solution, the material moving assembly includes a conveying guide rail 17, which is installed on the table weldment 1; a material moving base plate 18 is slidably installed on the conveying guide rail 17, and an automatic pressure head is arranged on the material moving base plate 18, and the automatic pressure head includes an oil circuit block 19 and a plurality of non-standard hydraulic pressure heads 20 arranged on the oil circuit block 19; there is an oil trough channel inside the oil circuit block 19, and the oil circuit block 19 controls the extension and retraction of the non-standard hydraulic pressure head 20 by switching the valve group; a test oil basin 21 and a fixing pin are arranged on the oil circuit block 19, and the fixing pin is used to guide and position the oil pump valve plate; an oil drain valve 22 and an oil inlet valve 23 are arranged at the bottom of the test oil basin 21, and a liquid level meter 24 and a thermometer 25 are installed on the test oil basin 21, and the liquid level meter 24 is used to monitor the liquid level in the test oil basin 21, and the thermometer 25 is used to monitor the temperature in the test oil basin 21.

[0030] Further optimizing the scheme, the slide assembly includes a sliding upper bottom plate 26, the sliding upper bottom plate 26 is slidably mounted on the slide guide column 7, and the clamping mechanism 9 is connected to the sliding upper bottom plate 26 through a guide rod and a floating joint;

[0031] A lower support column 27 is installed at the bottom end of the sliding upper base plate 26, a sliding lower base plate 28 is slidably installed on the lower support column 27, a torque meter seat plate 29 is installed on the sliding lower base plate 28, and the torque meter 5 is fixed on the torque meter seat plate 29; a rotating motor 30 is fixedly installed on the sliding upper base plate 26, the output shaft of the rotating motor 30 passes through the sliding upper base plate 26 and is connected to the torque meter 5 through an upper coupling 31; a spline anti-collision assembly is installed on the sliding lower base plate 28, and the torque meter 5 is connected to the spline anti-collision assembly through a lower coupling 32.

[0032] A further optimized solution is that a guide column 33 is installed on the sliding lower base plate 28, and a step is provided on the guide column 33, and the guide column 33 is used to guide and position the sliding upper base plate 26; a tooling block 34 is fixedly installed on the bottom end of the sliding lower base plate 28, and the tooling block 34 is used to contact the oil pump valve plate; an oil passage is provided inside the tooling block 34, and the oil passage is used to connect with the channel of the oil pump valve plate, and the tooling block 34 is used to install the NVH vibration sensor 6, pressure sensor or flow sensor for detection.

[0033] Further optimization scheme, the spline anti-collision component includes a conversion shaft 35, a fixed sleeve on the conversion shaft 35 is provided with a bearing, the conversion shaft 35 is rotatably connected to the bearing sleeve 36 through the bearing, and the top of the conversion shaft 35 is transmission-connected to the lower coupling 32; the outer side of the bottom of the conversion shaft 35 is sequentially sleeved with a spline shaft sleeve 37 and a spline shaft retaining ring 38, the spline shaft sleeve 37 is slidably matched with the conversion shaft 35, the spline shaft retaining ring 38 is fixedly connected to the conversion shaft 35, and a boss is provided at the bottom of the spline shaft retaining ring 38, and the spline shaft sleeve 37 is passed through the spline shaft sleeve 37. The boss is limitedly matched with the spline shaft retaining ring 38; a spring 39 is provided between the spline shaft retaining ring 38 and the conversion shaft 35, the top end of the spring 39 contacts the stopper of the conversion shaft 35, and the bottom end of the spring 39 contacts the stopper of the spline sleeve 37; the bottom end of the conversion shaft 35 is provided with an external spline, and the spline sleeve 37 is provided with an internal spline, and the conversion shaft 35 and the spline sleeve 37 are matched through the internal spline and external spline transmission; the spline sleeve 37 is provided with an internal spline, and the internal spline of the spline sleeve 37 is adapted to the external spline on the oil pump valve plate.

[0034] According to a further optimized solution, a detection switch seat 40 is fixedly connected to the bottom of the bearing sleeve 36 , and a proximity detector 41 is installed on the detection switch seat 40 .

[0035] The oil pump valve plate testing device provided by the present invention has a pushing component 2 that can push the material transfer bottom plate 18 forward and backward. When exiting the test position, the equipment and personnel are in a safe state. Personnel can take and put materials to protect their safety and prevent the equipment from malfunctioning and injuring people. The automatic pressure head is located on the material transfer bottom plate 18, and the automatic pressure head includes an oil circuit block 19 and a number of non-standard hydraulic pressure heads 20. There is an oil tank channel inside the oil circuit block 19, and the extension, tightening and retraction and release of the non-standard hydraulic pressure head 20 are realized by the switching function of the switching valve group. The test oil pan 21 is located on the oil circuit block 19 of the automatic pressure head. An oil drain valve 22 and an oil inlet valve 23 are provided at the bottom of the test oil pan 21, and the oil can be automatically drained and refilled according to the program logic.

[0036] The sliding upper base plate 26 is equipped with a linear bearing or a guide sleeve, so that it can cooperate with the slide plate guide column 7 and move up and down. The lower end of the sliding upper base plate 26 is equipped with a lower support column 27, and the lower support column 27 is fixed with the sliding lower base plate 28. The sliding lower base plate 28 is equipped with a guide column 33, the front end of the guide column 33 is rounded for guidance, and the tail end of the guide column 33 is provided with a step. When the slide plate assembly moves downward, the guide column 33 matches the lower guide hole to play a guiding and positioning function. At the same time, the step at the upper end of the guide column 33 can be limited to make the size of each descent consistent. The NVH vibration sensor 6 can monitor the data of the oil pump rotation on the oil pump valve plate, mainly identifying the noise of the rotor, gears and other structures when the oil pump rotates, and through data accumulation, it can determine the location and type of component failure.

[0037] When the slide plate assembly moves downward, the spline sleeve 37 is driven to move downward together, and the inner spline of the spline sleeve 37 matches with the outer spline on the oil pump valve plate, so that the inner spline of the spline sleeve 37 is sleeved in the outer spline on the oil pump valve plate to complete the matching. At the same time, the pre-pressure of the spring 39 makes the connection between the inner and outer splines tighter.

[0038] Due to the unique convex and concave structure of the spline, when the spline sleeve 37 matches the spline on the oil pump valve plate, the sliding assembly drives the spline to move downward, and the spline on the oil pump valve plate will prevent the spline sleeve 37 from moving downward, thereby providing a reaction force to move the spline sleeve 37 upward, and the spline sleeve 37 will compress the spring 39 upward. At the same time, after the proximity detector 41 detects the upward movement of the spline sleeve 37, it will give the control system a relevant signal, and through the control strategy, the direction and speed of the motor are controlled, thereby protecting the spline sleeve 37 and increasing the success rate of spline matching.

[0039] The spray fixing plate 11 of the spray assembly is equipped with a push assembly 2, which is fixed on the spray fixing plate 11. The front end of the push assembly 2 is connected to the spray block, and the push assembly 2 can push the nozzle block 13 to move forward or backward. After the test is completed, the spray assembly can be moved left and right to spray or blow air to clean the oil pump valve plate, remove pollutants generated during the test or attached before the test, and improve the cleanliness of the product surface.

[0040] The present invention can realize automatic completion of testing, thereby improving production efficiency, reducing interference from human factors, improving consistency of production data, reducing manual work intensity, reducing production time, and saving production costs.

[0041] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An oil pump valve plate testing device, characterized in that: The invention comprises a table plate weldment (1), on which a material shifting assembly, a pushing assembly (2) and a guiding assembly are arranged, an oil protection ring (3) is arranged around the table plate weldment (1), and an oil return hole (4) is arranged at the bottom of the table plate weldment (1); one end of the pushing assembly (2) is connected to the material shifting assembly, and the pushing assembly (2) is used to adjust the position of the material shifting assembly; a slidable slide plate assembly is arranged on the guiding assembly, a torque meter (5) and an NVH vibration sensor (6) are installed on the slide plate assembly, a spline anti-collision assembly is installed at the bottom of the slide plate assembly, and the torque meter (5) is connected to the external spline on the oil pump valve plate through the spline anti-collision assembly; the NVH vibration sensor (6) is used to monitor the data of the oil pump rotation on the oil pump valve plate; a spray assembly is arranged on the guiding assembly, and the spray assembly is located below the spline anti-collision assembly, and the spray assembly is used to clean the oil pump valve plate.

2. The oil pump valve plate testing device according to claim 1, characterized in that: The guide assembly comprises a slide plate guide column (7) fixedly mounted on the table weldment (1); the top end of the slide plate guide column (7) is fixedly connected to a top plate (8); a clamping mechanism (9) is mounted on the top plate (8); the clamping mechanism (9) is connected to a floating joint on the slide plate assembly via a guide rod; the spray assembly is mounted on the slide plate guide column (7).

3. The oil pump valve plate testing device according to claim 2, characterized in that: The spray assembly comprises two sliding clamps (10), the two sliding clamps (10) are respectively sleeved on the two slide plate guide columns (7), and a spray fixing plate (11) is fixedly installed between the two sliding clamps (10); a sliding bearing is installed on the spray fixing plate (11), a spray guide rod (12) is installed in the sliding bearing, a nozzle block (13) is fixedly installed on one end of the spray guide rod (12), and a nozzle (14) is installed on the nozzle block (13); the spray guide rod (12) is a hollow structure, and a hydraulic joint (15) is installed on the other end of the spray guide rod (12); a pushing assembly (2) is fixedly installed on the spray fixing plate (11), and the output end of the pushing assembly (2) is fixedly connected to the nozzle block (13).

4. The oil pump valve plate testing device according to claim 1, characterized in that: The material transfer assembly comprises a conveying guide rail (17), wherein the conveying guide rail (17) is mounted on the table weldment (1); a material transfer base plate (18) is slidably mounted on the conveying guide rail (17), wherein an automatic pressure head is arranged on the material transfer base plate (18), wherein the automatic pressure head comprises an oil passage block (19) and a plurality of non-standard hydraulic pressure heads (20) arranged on the oil passage block (19); an oil groove channel is arranged inside the oil passage block (19), and the oil passage block (19) controls the non-standard hydraulic pressure heads (20) by switching a valve group. 20); a test oil basin (21) and a fixing pin are arranged on the oil circuit block (19), and the fixing pin is used to guide and position the oil pump valve plate; an oil drain valve (22) and an oil inlet valve (23) are arranged at the bottom end of the test oil basin (21), and a liquid level meter (24) and a thermometer (25) are installed on the test oil basin (21), and the liquid level meter (24) is used to monitor the liquid level in the test oil basin (21), and the thermometer (25) is used to monitor the temperature in the test oil basin (21).

5. The oil pump valve plate testing device according to claim 2, characterized in that: The slide assembly comprises a sliding upper base plate (26), the sliding upper base plate (26) is slidably mounted on the slide guide column (7), and the clamping mechanism (9) is connected to the sliding upper base plate (26) via a guide rod and a floating joint; A lower support column (27) is installed at the bottom end of the sliding upper base plate (26), a sliding lower base plate (28) is slidably installed on the lower support column (27), a torque meter seat plate (29) is installed on the sliding lower base plate (28), and the torque meter (5) is fixed on the torque meter seat plate (29); a rotating motor (30) is fixedly installed on the sliding upper base plate (26), an output shaft of the rotating motor (30) passes through the sliding upper base plate (26) and is connected to the torque meter (5) through an upper coupling (31); the spline anti-collision component is installed on the sliding lower base plate (28), and the torque meter (5) is connected to the spline anti-collision component through a lower coupling (32).

6. The oil pump valve plate testing device according to claim 5, characterized in that: A guide column (33) is installed on the sliding lower base plate (28), and a step is provided on the guide column (33). The guide column (33) is used to guide and position the sliding upper base plate (26); a tooling block (34) is fixedly installed at the bottom end of the sliding lower base plate (28), and the tooling block (34) is used to contact the oil pump valve plate; an oil passage is provided inside the tooling block (34), and the oil passage is used to connect with the passage of the oil pump valve plate, and the tooling block (34) is used to install an NVH vibration sensor (6), a pressure sensor or a flow sensor for detection.

7. The oil pump valve plate testing device according to claim 5, characterized in that: The spline anti-collision component comprises a conversion shaft (35), a bearing is fixedly sleeved on the conversion shaft (35), the conversion shaft (35) is rotatably connected to a bearing sleeve (36) through the bearing, and the top of the conversion shaft (35) is drivingly connected to the lower coupling (32); a spline shaft sleeve (37) and a spline shaft retaining ring (38) are sequentially sleeved on the outer side of the bottom of the conversion shaft (35), the spline shaft sleeve (37) is slidably matched with the conversion shaft (35), the spline shaft retaining ring (38) is fixedly connected to the conversion shaft (35), and a boss is arranged at the bottom of the spline shaft retaining ring (38), and the spline shaft sleeve (37) is connected to the conversion shaft (35) through the boss. The spline shaft retaining ring (38) is limitedly matched with the spline shaft retaining ring (38); a spring (39) is provided between the spline shaft retaining ring (38) and the conversion shaft (35), the top end of the spring (39) contacts the stop plate of the conversion shaft (35), and the bottom end of the spring (39) contacts the stop plate of the spline shaft sleeve (37); the bottom end of the conversion shaft (35) is provided with an external spline, and the spline shaft sleeve (37) is provided with an internal spline, and the conversion shaft (35) and the spline shaft sleeve (37) are matched through the internal spline and the external spline transmission; the spline shaft sleeve (37) is provided with an internal spline, and the internal spline of the spline shaft sleeve (37) is adapted to the external spline on the oil pump valve plate.

8. The oil pump valve plate testing device according to claim 7, characterized in that: The bottom of the bearing sleeve (36) is fixedly connected to a detection switch seat (40), and a proximity detector (41) is installed on the detection switch seat (40).

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