An oil pump performance testing mechanism

Abstract

The utility model relates to a kind of oil pump performance test mechanism, it is related to oil pump performance test technical field, including compression assembly, torque test component, jacking assembly, tooling assembly and mesa board;The compression assembly and the torque test component are all installed on the mesa board, the tooling assembly is installed in the bottom of the compression assembly, the torque test component is located at the right side of the compression assembly, the torque test component points to the tooling assembly;The jacking assembly is installed in the mesa board below and directly below the tooling assembly.The advantage is that: by including compression assembly, torque test component, jacking assembly, tooling assembly, mesa board synergistic effect completes the performance test operation of oil pump, and it is simple, efficient, saves time, maintenance is convenient, and it is economical, with promotional significance.

Description

Technical Field

[0001] This utility model relates to the field of oil pump performance testing technology, and more specifically, to an oil pump performance testing mechanism. Background Technology

[0002] The oil pump in a car engine is like the heart in the human body, playing a very important role. Therefore, the oil pump must undergo 100% performance testing before it can be put into operation in a car.

[0003] Currently, the equipment operation for testing oil pumps is complex, which reduces the efficiency of oil pump performance testing.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this invention is to provide an oil pump performance testing mechanism that can efficiently test various aspects of the oil pump's performance, thereby improving efficiency and quality.

[0006] This utility model provides an oil pump performance testing mechanism, including a clamping assembly, a torque testing assembly, a lifting assembly, a tooling assembly, and a platform. The clamping assembly and the torque testing assembly are both mounted on the platform. The tooling assembly is mounted at the bottom of the clamping assembly. The torque testing assembly is located to the right of the clamping assembly and points towards the tooling assembly. The lifting assembly is mounted directly below the tooling assembly on the platform.

[0007] Further, the clamping assembly includes a base plate, an upper end plate, columns, a first cylinder, a first linear bearing, a guide shaft, a first cylinder fixing plate, a regulating valve fixing plate, a first regulating valve, a first floating joint, a lower pressure plate, a second linear bearing, a guide pressure rod, a spring, a clamp, and a pressure head; the bottom of the base plate is connected to the table panel, and the columns are vertically connected to the four corners of the base plate. The other end of each column is connected to the upper end plate, and the first cylinder fixing plate is connected to the middle of the upper end plate. The first cylinder is connected to the first cylinder fixing plate; the first cylinder is connected to the side of the first cylinder via the regulating valve fixing plate. The regulating valve has a lower pressure plate connected to the output end of the first cylinder via the first floating joint. Guide shafts are vertically connected to the four corners of the lower pressure plate. Four first linear bearings are connected to the upper plate, and the other ends of the four guide shafts are inserted into the four first linear bearings. Four second linear bearings are connected to the lower pressure plate, and guide rods are threaded through the second linear bearings. The lower end of the guide rod is connected to a pressure head. A clamp is fitted on the side of the guide rod above the pressure head, and a spring is fitted on the side of the guide rod above the clamp.

[0008] Further, the torque testing assembly includes a servo motor, a reducer, a reducer mounting plate, a second coupling, a torque sensor, a torque sensor mounting plate, a first coupling, a bearing housing, a height adjustment plate, an up-and-down adjustment plate, a horizontal adjustment plate, an optical fiber mounting plate, a through-beam optical fiber, a central shaft, a telescopic sleeve, a baffle, a second cylinder, a second cylinder mounting base, a test base plate, guide rails, a second floating joint, reinforcing ribs, a reducer adjustment plate, a slider, a slider mounting plate, a collision protection block, a buffer, and a fixing block. The bottom of the test base plate is connected to the platform panel, and two parallel guide rails are provided on the top of the test base plate. The slider is slidably connected to the guide rails, and the slider mounting plate is connected to the top of the slider. The second cylinder mounting base is fixedly connected to the end of the test base plate away from the tooling assembly, and the second cylinder is connected to the second cylinder mounting base. The output end of the second cylinder is connected to the slider mounting plate through the second floating joint. The reducer adjustment plate is connected to the top of the slider mounting plate, and the reducer mounting plate is connected to the top of the reducer adjustment plate through reinforcing ribs. The test plate has a speed reducer fixed plate connected to a speed reducer, on which a servo motor is mounted. The speed reducer is connected to a torque sensor via a second coupling. The torque sensor is connected to a slider mounting plate via a torque sensor fixed plate. The torque sensor is connected to a central shaft via a first coupling. The other end of the central shaft is connected to a telescopic sleeve, and a baffle is connected to the side of the telescopic sleeve. A horizontal adjustment plate is also connected above the slider mounting plate. A vertical adjustment plate is vertically connected to the horizontal adjustment plate. The other end of the vertical adjustment plate is vertically connected to a height adjustment plate. A bearing seat is fixedly connected to the front of the vertical adjustment plate and is fitted onto the central shaft. An optical fiber mounting plate is connected to the end of the slider mounting plate, and two opposing optical fibers are connected to the optical fiber mounting plate. A fixing block is connected to one side of the test base plate, and a buffer is connected to the fixing block. An anti-collision block is connected to one side of the slider mounting plate, and the anti-collision block is located directly in front of the buffer.

[0009] Furthermore, the lifting assembly includes a first connecting plate, a second connecting plate, a third connecting plate, a third cylinder, a second regulating valve, an end plate, a vent seat, a large cover plate, a large sealing ring, a small cover plate, and a small sealing ring; the second connecting plate is vertically connected to both ends of the third connecting plate, the second regulating valve is connected to one of the second connecting plates, the first connecting plate is connected to the other end of the second connecting plate, and the first connecting plate is connected to the underside of the platform panel; the third cylinder is connected to the middle of the third connecting plate, the end plate is connected to the other end of the third cylinder, the vent seat is connected to the end plate, the large cover plate and the small cover plate are respectively connected to the upper end of the vent seat, and the large sealing ring and the small sealing ring are respectively connected to the large cover plate and the small cover plate.

[0010] Furthermore, the tooling assembly includes a tooling base plate, a contouring seat, a positioning block, and a positioning pin; the bottom surface of the tooling base plate is connected to the top of the base plate via the positioning pin, the tooling base plate has a square hole located directly above the vent seat, and the positioning block is connected to the tooling base plate at the square hole; the contouring seat is connected to the top of the tooling base plate, and the upper end of the contouring seat has a U-shaped opening located directly in front of the telescopic sleeve.

[0011] The oil pump performance testing mechanism provided by this utility model completes the performance testing of the oil pump through the coordinated action of a clamping component, a torque testing component, a lifting component, a tooling component, and a platform. It is simple to operate, highly efficient, saves time, is easy to maintain, and is economical, making it worthy of widespread application. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the oil pump performance testing mechanism provided in this embodiment of the utility model.

[0013] Figure 2 for Figure 1 A schematic diagram of the planar structure of the performance testing mechanism for the oil pump.

[0014] Figure 3 for Figure 1 A schematic diagram of the clamping assembly of the oil pump performance testing mechanism.

[0015] Figure 4 for Figure 1 Another structural schematic diagram of the clamping assembly of the oil pump performance testing mechanism.

[0016] Figure 5 for Figure 1 A schematic diagram of the torque testing component of the oil pump performance testing mechanism.

[0017] Figure 6 for Figure 1 Another structural schematic diagram of the torque testing component of the oil pump performance testing mechanism.

[0018] Figure 7 for Figure 1 A schematic diagram of the lifting assembly of the oil pump performance testing mechanism.

[0019] Figure 8 for Figure 1 A schematic diagram of the tooling components of the oil pump performance testing mechanism.

[0020] The reference numerals and components involved in the accompanying drawings are shown below:

[0021] 1. Clamping assembly 11, base plate 12, upper end plate

[0022] 13. Column; 14. First cylinder; 15. First linear bearing

[0023] 16. Guide shaft; 17. First cylinder fixing plate; 18. Adjusting valve fixing plate

[0024] 19. First regulating valve 191, first floating joint 192, lower pressure plate

[0025] 193. Second linear bearing; 194. Guide rod; 195. Spring

[0026] 196. Clamp; 197. Indenter 2; Torque test assembly

[0027] 21. Servo motor 22. Gear reducer 23. Gear reducer mounting plate

[0028] 24. Second coupling; 25. Torque sensor; 26. Torque sensor mounting plate

[0029] 27. First coupling; 28. Bearing housing; 29. ​​Height adjustment plate

[0030] 291. Height adjustment plate; 292. Horizontal adjustment plate; 293. Fiber optic mounting plate.

[0031] 294. Optical fiber for through-beams; 295. Central shaft; 296. Telescopic sleeve.

[0032] 297. Baffle plate; 298. Second cylinder; 299. Second cylinder mounting base

[0033] 2991. Test base plate; 2992. Guide rail; 2993. Second floating joint

[0034] 2994, Reinforcing rib; 2995, Reducer adjusting plate; 2996, Sliding block

[0035] 2997. Slider mounting plate; 2998. Anti-collision block; 2999. Buffer.

[0036] 29991, Fixing Block 3, Lifting Assembly 31, First Connecting Plate

[0037] 32. Second connecting plate; 33. Third connecting plate; 34. Third cylinder

[0038] 35. Second regulating valve; 36. End plate; 37. Vent seat

[0039] 38. Large cover plate; 39. Large sealing ring; 391. Small cover plate

[0040] 392. Small sealing ring; 4. Tooling assembly; 41. Tooling base plate

[0041] 42. Copying base; 43. Positioning block; 44. Positioning pin

[0042] 45. Square hole; 46. U-shaped opening; 5. Countertop. Detailed Implementation

[0043] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0044] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0045] Example 1

[0046] Figure 1 This is a schematic diagram of the structure of the oil pump performance testing mechanism provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the planar structure of the oil pump performance testing mechanism. Please refer to... Figure 1 , Figure 2 The oil pump performance testing mechanism provided in this embodiment includes a clamping assembly 1, a torque testing assembly 2, a lifting assembly 3, a tooling assembly 4, and a platform 5. The clamping assembly 1 and the torque testing assembly 2 are both mounted on the platform 5. The tooling assembly 4 is mounted at the bottom of the clamping assembly 1. The torque testing assembly 2 is located to the right of the clamping assembly 1 and points towards the tooling assembly 4. The lifting assembly 3 is mounted directly below the tooling assembly 4 on the platform 5.

[0047] Figure 3 for Figure 1 A schematic diagram of the clamping assembly of the oil pump performance testing mechanism. Figure 4 for Figure 1 A schematic diagram of the clamping assembly of the oil pump performance testing mechanism from another perspective. Please refer to... Figure 2 , Figure 3 , Figure 4 The clamping assembly 1 of this utility model includes a base plate 11, an upper end plate 12, a column 13, a first cylinder 14, a first linear bearing 15, a guide shaft 16, a first cylinder fixing plate 17, a regulating valve fixing plate 18, a first regulating valve 19, a first floating joint 191, a lower pressure plate 192, a second linear bearing 193, a guide pressure rod 194, a spring 195, a clamp 196, and a pressure head 197. The bottom of the base plate 11 is connected to the table panel 5. The column 13 is vertically connected to each of the four corners of the base plate 11. The other end of the column 13 is connected to the upper end plate 12. The first cylinder fixing plate 17 is connected to the middle of the upper end plate 12. The first cylinder 14 is connected to the first cylinder fixing plate 17. The first cylinder 14 is connected to the side of the first cylinder 14 through the regulating valve fixing plate 18. The first regulating valve 19, the output end of the first cylinder 14 is connected to the lower pressure plate 192 through the first floating joint 191, the guide shaft 16 is vertically connected to the four corners of the lower pressure plate 192, four first linear bearings 15 are connected to the upper end plate 12, and the other ends of the four guide shafts 16 are correspondingly inserted into the four first linear bearings 15; four second linear bearings 193 are connected to the lower pressure plate 192, the guide pressure rod 194 passes through the second linear bearings 193, the lower end of the guide pressure rod 194 is connected to the pressure head 197, the clamp 196 is sleeved on the side of the guide pressure rod 194 above the pressure head 197, and the spring 195 is sleeved on the side of the guide pressure rod 194 above the clamp 196.

[0048] Figure 5 for Figure 1 A schematic diagram of the torque testing component of the oil pump performance testing mechanism. Figure 6 for Figure 1 A schematic diagram of the torque testing component of the oil pump performance testing mechanism from another perspective. Please refer to... Figure 5 , Figure 6The torque testing assembly 2 of this utility model includes a servo motor 21, a reducer 22, a reducer mounting plate 23, a second coupling 24, a torque sensor 25, a torque sensor mounting plate 26, a first coupling 27, a bearing seat 28, a height adjustment plate 29, an up-down adjustment plate 291, a horizontal adjustment plate 292, an optical fiber mounting plate 293, a through-beam optical fiber 294, a central shaft 295, a telescopic sleeve 296, a baffle 297, a second cylinder 298, a second cylinder mounting seat 299, a test base plate 2991, a guide rail 2992, a second floating joint 2993, a reinforcing rib 2994, a reducer adjustment plate 2995, a slider 2996, and a slider mounting plate 2997. The test base plate 2991 comprises a crash block 2998, a buffer 2999, and a fixing block 29991. The bottom of the test base plate 2991 is connected to the platform 5. Two parallel guide rails 2992 are provided on the top of the test base plate 2991. A slider 2996 is slidably connected to the guide rails 2992, and a slider mounting plate 2997 is connected to the top of the slider 2996. A second cylinder mounting seat 299 is fixedly connected to the end of the test base plate 2991 away from the tooling assembly 4. A second cylinder 298 is connected to the second cylinder mounting seat 299, and the output end of the second cylinder 298 is connected to the slider via a second floating joint 2993. Mounting plate 2997 is connected; a reducer adjusting plate 2995 is connected to the top of the slider mounting plate 2997, and a reducer fixing plate 23 is connected to the top of the reducer adjusting plate 2995 via reinforcing ribs 2994. A reducer 22 is connected to the reducer fixing plate 23, and a servo motor 21 is mounted on the reducer 22. The reducer 22 is connected to the torque sensor 25 via a second coupling 24. The torque sensor 25 is connected to the slider mounting plate 2997 via a torque sensor fixing plate 26. The torque sensor 25 is connected to the central shaft 295 via a first coupling 27. 5. The other end is connected to the telescopic sleeve 296, and the side of the telescopic sleeve 296 is connected to the baffle 297; the horizontal adjustment plate 292 is also connected above the slider mounting plate 2997, the vertical adjustment plate 291 is vertically connected to the horizontal adjustment plate 292, the other end of the vertical adjustment plate 291 is vertically connected to the height adjustment plate 29, the bearing seat 28 is fixedly connected to the front of the vertical adjustment plate 291, the bearing seat 28 is sleeved on the central shaft 295, the end of the slider mounting plate 2997 is connected to the optical fiber mounting plate 293, and two opposite optical fibers 294 are connected to the optical fiber mounting plate 293;A fixing block 29991 is connected to one side of the test base plate 2991, and a buffer 2999 is connected to the fixing block 29991. A collision avoidance block 2998 is connected to one side of the slider mounting plate 2997, and the collision avoidance block 2998 is located directly in front of the buffer 2999.

[0049] Figure 7 for Figure 1 A schematic diagram of the lifting assembly of the oil pump performance testing mechanism. Please refer to... Figure 7 The lifting assembly 3 of this utility model includes a first connecting plate 31, a second connecting plate 32, a third connecting plate 33, a third cylinder 34, a second adjusting valve 35, an end plate 36, a vent seat 37, a large cover plate 38, a large sealing ring 39, a small cover plate 391, and a small sealing ring 392. The second connecting plate 32 is vertically connected to both ends of the third connecting plate 33. The second adjusting valve 35 is connected to one of the second connecting plates 32, and the other end of the second connecting plate 33 is connected to the first connecting plate 34. A connecting plate 31 is connected to the bottom of the platform 5; a third cylinder 34 is connected to the middle of the upper part of the third connecting plate 33, and the other end of the third cylinder 34 is connected to the end plate 36. The vent seat 37 is connected to the end plate 36, and the upper end of the vent seat 37 is connected to the large cover plate 38 and the small cover plate 391 respectively. The large cover plate 38 and the small cover plate 391 are respectively connected to the large sealing ring 39 and the small sealing ring 392.

[0050] Figure 8 for Figure 1 A schematic diagram of the tooling components for the performance testing mechanism of the oil pump. Please refer to... Figure 8 The tooling assembly 4 of this utility model includes a tooling base plate 41, a contouring seat 42, a positioning block 43, and a positioning pin 44. The bottom surface of the tooling base plate 41 is connected to the top of the base plate 11 via the positioning pin 44. The tooling base plate 41 is provided with a square hole 45, which is located directly above the vent seat 37. The positioning block 43 is connected to the tooling base plate 41 at the square hole 45. The contouring seat 42 is connected to the top of the tooling base plate 41. The upper end of the contouring seat 42 is provided with a U-shaped opening 46, which is located directly in front of the telescopic sleeve 296.

[0051] It should be noted that the working process of the oil pump performance testing mechanism of this utility model is as follows:

[0052] The product is manually placed into the fixture, and the start switch is pressed. The first cylinder 14 extends, driving the pressure head 197 to press the product. The third cylinder 34 extends, and the large sealing ring 39 and two small sealing rings 392 on the vent seat 37 come into contact with the product, forming a seal at the product's interface. The servo motor 21 rotates through the second coupling 24 and the first coupling 27, driving the torque sensor 25 and the telescopic sleeve 296 to rotate together. The second cylinder 298 extends, and the telescopic sleeve 296 comes into contact with the product. When the signal from the through-beam fiber optic cable 294 changes from on to off, it indicates that the telescopic sleeve 296 has been inserted into the product shaft and successfully docked with the product. The product's performance is then tested. After the test is completed, the second cylinder 298 retracts, resetting the telescopic sleeve 296. The third cylinder 34 retracts, resetting the large sealing ring 39 and the small sealing rings 392. The first cylinder 14 retracts, resetting the pressure head 197. The product is then manually removed, completing one cycle.

[0053] As can be seen from the above description, the advantages of this utility model are:

[0054] The oil pump performance testing mechanism of this utility model completes the performance testing of the oil pump through the coordinated action of a clamping component, a torque testing component, a lifting component, a tooling component, and a platform. It is simple to operate, highly efficient, time-saving, easy to maintain, and economical, and has promotional significance.

[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An oil pump performance testing mechanism, characterized in that, It includes a clamping assembly (1), a torque testing assembly (2), a lifting assembly (3), a tooling assembly (4), and a platform (5); The clamping assembly (1) and the torque testing assembly (2) are both mounted on the platform (5). The tooling assembly (4) is mounted at the bottom of the clamping assembly (1). The torque testing assembly (2) is located on the right side of the clamping assembly (1) and points towards the tooling assembly (4). The lifting assembly (3) is installed below the platform (5) and directly below the tooling assembly (4).

2. The oil pump performance testing mechanism according to claim 1, characterized in that, The clamping assembly (1) includes a base plate (11), an upper end plate (12), a column (13), a first cylinder (14), a first linear bearing (15), a guide shaft (16), a first cylinder fixing plate (17), a regulating valve fixing plate (18), a first regulating valve (19), a first floating joint (191), a lower pressure plate (192), a second linear bearing (193), a guide pressure rod (194), a spring (195), a clamp (196), and a pressure head (197); The bottom of the base plate (11) is connected to the tabletop (5). The four corners of the base plate (11) are vertically connected to the columns (13). The other end of the columns (13) is connected to the upper end plate (12). The middle of the upper end plate (12) is connected to the first cylinder fixing plate (17). The first cylinder (14) is connected to the first cylinder fixing plate (17). The first regulating valve (19) is connected to the side of the first cylinder (14) via the regulating valve fixing plate (18). The output end of the first cylinder (14) is connected to the lower pressure plate (192) via the first floating joint (191). The guide shaft (16) is vertically connected to the four corners of the lower pressure plate (192). Four first linear bearings (15) are connected to the upper end plate (12). The other ends of the four guide shafts (16) are correspondingly inserted into the four first linear bearings (15). Four second linear bearings (193) are connected to the lower pressure plate (192). The guide pressure rod (194) passes through the second linear bearing (193). The lower end of the guide pressure rod (194) is connected to the pressure head (197). The clamp (196) is sleeved on the side of the guide pressure rod (194) above the pressure head (197). The spring (195) is sleeved on the side of the guide pressure rod (194) above the clamp (196).

3. The oil pump performance testing mechanism according to claim 1, characterized in that, The torque testing assembly (2) includes a servo motor (21), a reducer (22), a reducer mounting plate (23), a second coupling (24), a torque sensor (25), a torque sensor mounting plate (26), a first coupling (27), a bearing seat (28), a height adjustment plate (29), an up-down adjustment plate (291), a horizontal adjustment plate (292), an optical fiber mounting plate (293), a through-beam optical fiber (294), a central shaft (295), a telescopic sleeve (296), a baffle (297), a second cylinder (298), a second cylinder mounting seat (299), a test base plate (2991), a guide rail (2992), a second floating joint (2993), a reinforcing rib (2994), a reducer adjustment plate (2995), a slider (2996), a slider mounting plate (2997), a collision protection block (2998), a buffer (2999), and a fixing block (29991). The test base plate (2991) is connected to the table panel (5) on the bottom. Two parallel guide rails (2992) are provided on the top of the test base plate (2991). The slider (2996) is slidably connected on the guide rails (2992). The slider mounting plate (2997) is connected to the top of the slider (2996). A second cylinder mounting base (299) is fixedly connected to one end of the test base plate (2991) away from the tooling assembly (4). A second cylinder (298) is connected to the second cylinder mounting base (299). The output end of the second cylinder (298) is connected to the slider mounting plate (2997) through a second floating joint (2993). The reducer adjustment plate (2995) is connected to the top of the slider mounting plate (2997). The reducer fixing plate (23) is connected to the top of the reducer adjustment plate (2995) by a reinforcing rib (2994). The reducer (22) is connected to the reducer fixing plate (23). The servo motor (21) is installed on the reducer (22). The reducer (22) is connected to the torque sensor (25) via the second coupling (24). The torque sensor (25) is connected to the slider mounting plate (2997) via the torque sensor fixing plate (26). The torque sensor (25) is connected to the central shaft (295) via the first coupling (27). The other end of the central shaft (295) is connected to the telescopic sleeve (296). The side of the telescopic sleeve (296) is connected to the baffle (297). A horizontal adjustment plate (292) is connected above the slider mounting plate (2997). The vertical adjustment plate (291) is vertically connected to the horizontal adjustment plate (292). The height adjustment plate (29) is vertically connected to the other end of the vertical adjustment plate (291). The bearing seat (28) is fixedly connected to the front of the vertical adjustment plate (291). The bearing seat (28) is sleeved on the central shaft (295). The optical fiber mounting plate (293) is connected to the end of the slider mounting plate (2997). Two opposing optical fibers (294) are connected to the optical fiber mounting plate (293). The fixing block (29991) is connected to one side of the test base plate (2991), and the buffer (2999) is connected to the fixing block (29991). The anti-collision block (2998) is connected to one side of the slider mounting plate (2997), and the anti-collision block (2998) is located directly in front of the buffer (2999).

4. The oil pump performance testing mechanism according to claim 3, characterized in that, The lifting assembly (3) includes a first connecting plate (31), a second connecting plate (32), a third connecting plate (33), a third cylinder (34), a second regulating valve (35), an end plate (36), a vent seat (37), a large cover plate (38), a large sealing ring (39), a small cover plate (391), and a small sealing ring (392). The second connecting plate (32) is vertically connected to both ends of the third connecting plate (33). The second regulating valve (35) is connected to one of the second connecting plates (32). The first connecting plate (31) is connected to the other end of the second connecting plate (32). The first connecting plate (31) is connected to the bottom of the table panel (5). The third cylinder (34) is connected to the middle of the third connecting plate (33). The other end of the third cylinder (34) is connected to the end plate (36). The vent seat (37) is connected to the end plate (36). The upper end of the vent seat (37) is connected to the large cover plate (38) and the small cover plate (391). The large sealing ring (39) and the small sealing ring (392) are connected to the large cover plate (38) and the small cover plate (391) respectively.

5. The oil pump performance testing mechanism according to claim 4, characterized in that, The tooling assembly (4) includes a tooling base plate (41), a contour base (42), a positioning block (43), and a positioning pin (44); The bottom surface of the tooling base plate (41) is connected to the top of the base plate (11) by a positioning pin (44). The tooling base plate (41) is provided with a square hole (45). The square hole (45) is located directly above the vent seat (37). The positioning block (43) is connected to the tooling base plate (41) at the square hole (45). The tooling base plate (41) is connected to the top of the contouring seat (42), and the upper end of the contouring seat (42) is provided with a U-shaped opening (46), which is located in front of the telescopic sleeve (296).

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