Sealing detection instrument for hydraulic element

Abstract

The utility model discloses a sealing detection instrument for a hydraulic element, and belongs to the technical field of hydraulic element testing. Comprising a bottom plate, a detection water tank is fixedly arranged at the top of the bottom plate, and a conical air nozzle is arranged on the inner side of the detection water tank in a lifting mode; a hydraulic pump penetrates through the interiors of the two clamping mechanisms, an operator can clamp the bottom end of the hydraulic pump into a circular ring in the placing process, the hydraulic pump is located on the horizontal line and located at the center of a sliding plate, and at the moment, an air pipe is clamped into a V-shaped limiting plate along with horizontal sliding of the operator; the positions of different air pipes can be limited by twisting the adjusting bolts, so that the air pipes are in a horizontal and vertical state, and after limiting is completed, the hydraulic pump can be locked through the clamping mechanism, so that the problem that the detection efficiency is reduced due to the fact that the hydraulic pump is not easy to disassemble and assemble during detection is effectively solved; therefore, the hydraulic pump can be quickly disassembled and assembled during detection, and the efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of testing and processing technology for hydraulic components, and more specifically, to a sealing testing instrument for hydraulic components. Background Technology

[0002] Hydraulic component sealing testing instruments are the "gatekeepers" ensuring the reliability of hydraulic systems. Through multi-dimensional testing including leakage testing, pressure testing, and vacuum testing, combined with data recording and analysis functions, they can comprehensively evaluate the sealing performance of components and are widely used in key fields such as engineering machinery, aerospace, and automobiles. Their importance lies not only in preventing failures and extending equipment lifespan, but also in ensuring production safety and reducing maintenance costs, making them an indispensable part of modern industrial quality control.

[0003] In related technologies, for example, the prior art patent with publication number CN220794547U provides a hydraulic cylinder sealing test mechanism. This device allows the hydraulic cylinder to be placed on a placement plate and then connected to a high-pressure air station through a pipeline. The high-pressure gas in the high-pressure air station is then filled into the cylinder liner, and the hydraulic cylinder is then immersed in water to observe the air tightness of the hydraulic cylinder. The operation is simple and convenient.

[0004] While the existing technical solutions described above have solved the problems mentioned in the background, the hydraulic pump is fixed by screws to an arc-shaped bracket during installation, making it difficult to disassemble and install. In continuous testing, the repeated disassembly and assembly of the hydraulic pump is time-consuming and reduces testing efficiency.

[0005] In view of this, we propose a sealing test instrument for hydraulic components. Utility Model Content

[0006] The purpose of this application is to provide a sealing testing instrument for hydraulic components, which can effectively solve the problem in the prior art that the testing efficiency is reduced because the hydraulic pump is not easy to disassemble and install during testing.

[0007] This application provides a sealing testing instrument for hydraulic components, comprising:

[0008] A base plate, on the top of which a detection water tank is fixedly installed, and a conical air nozzle is installed on the inner side of the detection water tank in a lifting manner;

[0009] The slide plate, driven by external force to lift and lower, is set on the top of the detection water tank. A support rod is vertically set at the bottom of the slide plate. A hydraulic pump is detachably set at the bottom of the support rod through a connecting component. The air pipe on the outside of the hydraulic pump is sealed and connected to a conical air nozzle.

[0010] An L-shaped beam is fixedly installed at the bottom of the slide plate. A ring is fixedly installed at the end of the L-shaped beam. The ring is sleeved on the outside of the telescopic end of the hydraulic pump. A V-shaped limiting plate is horizontally installed at the bottom of the ring. The V-shaped limiting plate is located on the outside of the air tube to maintain the verticality of the air tube.

[0011] The connecting assembly includes an upper retaining ring fixedly disposed at the end of the support rod and a lower retaining ring movably connected to the outside of the upper retaining ring. The upper retaining ring and the lower retaining ring are located at the top and bottom of the hydraulic pump, respectively, and are used to lock the hydraulic pump after it has been limited.

[0012] As an optional solution to the technical solution of this application, a protrusion A is fixedly provided on the top of the upper retaining ring, the protrusion A is fixedly connected to the bottom end of the support rod, a rubber pad is fixedly provided on the inner side of the upper retaining ring, a wheel is fixedly provided on the outer side of the upper retaining ring, a rotating locking ring is provided inside the wheel, a bushing is rotatably provided on the side of the locking ring away from the wheel, a left retaining ring and an arc-shaped magnetic plate A are fixedly provided on the outer side of the bushing, a lower retaining ring is rotatably provided on the side of the left retaining ring away from the bushing, a connecting plate is rotatably provided on the outer side of the lower retaining ring, and the side of the connecting plate away from the lower retaining ring is fixedly connected to the upper retaining ring.

[0013] As an optional solution to the technical solution of this application, an arc-shaped magnetic plate B is fixedly provided on the outer side of the lower retaining ring. A strip plate B and a strip plate A are respectively provided on one side of the arc-shaped magnetic plate B and the arc-shaped magnetic plate A. An L-shaped plate B and an L-shaped plate C are respectively fixedly provided on the outer side of the strip plate A and the strip plate B. The L-shaped plate B and the L-shaped plate C are respectively fixed to the outer side of the arc-shaped magnetic plate A and the arc-shaped magnetic plate B by screws. A sealing strip is provided inside the arc-shaped magnetic plate A and the arc-shaped magnetic plate B.

[0014] As an optional solution to the technical solution of this application, the inner side of the slide plate is provided with a plurality of slide grooves C, and an electric slider is slidably arranged inside each slide groove C. A slider A is fixedly arranged at the bottom of each electric slider, and two support rods are fixedly arranged at the bottom of the slider A. A rectangular groove is opened at the bottom end of the support rod, and the protrusion A is fixedly arranged inside the rectangular groove by a conical block.

[0015] As an optional solution to the technical solution of this application, an L-shaped beam is fixedly provided on the outer side of the support rod, and a ring is fixedly provided on the bottom of the L-shaped beam coaxially with the upper retaining ring. A protrusion B is fixedly provided on the bottom of the ring, and an adjusting bolt is rotatably provided inside the protrusion B. One end of the adjusting bolt is rotatably provided on a V-shaped limiting plate, and the V-shaped limiting plate is slidably connected to the protrusion B.

[0016] As an optional solution to the technical solution of this application, a telescopic pump A is symmetrically arranged on the top of the base plate, a telescopic pump B is arranged on the top of the base plate, two slide rails are vertically fixed on the top of the base plate, a slide groove A is opened inside the slide rail, and a slider B is fixedly arranged on the outside of the slide plate, and the slider B is slidably arranged inside the slide groove A.

[0017] As an optional solution to the technical solution of this application, the detection water tank has a detection water trough inside, and two Z-shaped plates are placed inside the detection water tank. An electric push rod is fixedly installed horizontally on the top of the Z-shaped plate, and an L-shaped plate A is fixedly installed at the drive end of the electric push rod. A conical air nozzle is fixedly installed on the top of the horizontal side of the L-shaped plate A, and two sliders C are installed at the bottom of the L-shaped plate A. The sliders C are slidably installed inside the Z-shaped plate, and a groove B is opened at the bottom of the Z-shaped plate corresponding to the sliders C. A high-pressure air tank for providing air pressure to the conical air nozzle is fixedly installed on the top of the base plate.

[0018] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0019] (1) This application adopts the method of first passing the hydraulic pump through the inside of two clamping mechanisms. During the placement process, the operator can clamp the bottom end of the hydraulic pump inside the ring, so that the hydraulic pump is on the horizontal line and at the center of the slide plate. At this time, the air pipe slides horizontally with the operator and is clamped inside the V-shaped limiting plate. The position of different air pipes can be limited by turning the adjusting bolt, so that the air pipe is in a horizontal and vertical state. After the limiting is completed, the hydraulic pump can be locked by the clamping mechanism. Therefore, it effectively solves the problem that the hydraulic pump is not easy to disassemble and install during testing, which leads to a decrease in testing efficiency. Thus, it realizes that the hydraulic pump can be quickly disassembled and installed and improves efficiency during testing.

[0020] (2) This application pushes the L-shaped plate A to extend and retract to both sides by an electric push rod, which can adapt to different air nozzle spacings. Moreover, the air pipe position on the exterior of each hydraulic pump is different, so that the electric slider can drive the hydraulic pump and the bottom L-shaped plate A to slide and cooperate with each other. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a sealing testing instrument for hydraulic components disclosed in a preferred embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure for adjusting the nozzle spacing of a hydraulic pump in a sealing test instrument for hydraulic components, as disclosed in a preferred embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the structure of a limiting hydraulic pump for a sealing test instrument for hydraulic components, as disclosed in a preferred embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the positioning hydraulic pump of a sealing testing instrument for hydraulic components disclosed in a preferred embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the internal structure of the retaining ring of a sealing testing instrument for hydraulic components disclosed in a preferred embodiment of this application;

[0026] Explanation of the labels in the diagram:

[0027] 1. Base plate; 11. Testing water tank; 12. High-pressure air tank; 13. Telescopic pump A; 14. Telescopic pump B; 15. Slide rail; 16. Slide groove A; 17. Conical air nozzle; 18. Slider C; 19. Slide groove B; 110. L-shaped plate A; 111. Electric push rod; 112. Z-shaped plate; 113. Testing water tank;

[0028] 2. Slide plate; 21. Hydraulic pump; 22. Support rod; 23. Electric slider; 24. Slider A; 25. Slide C; 26. Conical block; 27. Rectangular groove; 28. Air pipe; 29. ​​Slider B;

[0029] 3. Upper retaining ring; 31. Arc-shaped magnetic plate A; 32. Arc-shaped magnetic plate B; 33. Magnetic block; 34. Wheel; 35. Locking ring; 36. Left retaining ring; 37. Rubber pad; 38. Connecting plate; 39. Protrusion A; 310. Bushing; 311. Lower retaining ring;

[0030] 4. Strip plate A; 41. L-shaped plate B; 42. Strip plate B; 43. L-shaped plate C; 44. Sealing strip;

[0031] 5. L-shaped beam; 51. Circular ring; 52. Adjusting bolt; 53. Protrusion B; 54. V-shaped limiting plate. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 3 , Figure 4 and Figure 5This application discloses a sealing testing instrument for hydraulic components, comprising an L-shaped beam 5, with a circular ring 51 coaxially fixed at the bottom of the L-shaped beam 5 and an upper retaining ring 3. A protrusion B53 is fixedly fixed at the bottom of the circular ring 51, and an adjusting bolt 52 is rotatably mounted inside the protrusion B53. One end of the adjusting bolt 52 is rotatably mounted on a V-shaped limiting plate 54, which is slidably connected to the protrusion B53. A rectangular groove 27 is formed at the bottom end of a support rod 22. A protrusion A39 is fixedly mounted at the top of the upper retaining ring 3, and the protrusion A39 is fixedly connected to the bottom end of the support rod 22. The upper retaining ring 3 and a lower retaining ring 311 are movably connected to the outside of the upper retaining ring 3. The upper and lower retaining rings 311 are located at the top and bottom of the hydraulic pump 21, respectively, and are used to lock the hydraulic pump 21 after it is limited. A rubber pad 37 is fixedly provided on the inner side of the upper retaining ring 3, and a wheel 34 is fixedly provided on the outer side of the upper retaining ring 3. A rotating locking ring 35 is provided inside the wheel 34. A bushing 310 is rotatably provided on the side of the locking ring 35 away from the wheel 34. A left retaining ring 36 and an arc-shaped magnetic plate A31 are fixedly provided on the outer side of the bushing 310. A lower retaining ring 311 is rotatably provided on the side of the left retaining ring 36 away from the bushing 310. A connecting plate 38 is rotatably provided on the outer side of the lower retaining ring 311. The side of the connecting plate 38 away from the lower retaining ring 311 is fixedly connected to the upper retaining ring 3.

[0034] When installing and positioning the hydraulic pump 21, the operator first passes the hydraulic pump 21 through the two clamping mechanisms. During placement, the operator can clamp the bottom end of the hydraulic pump 21 inside the ring 51, so that the hydraulic pump 21 is on a horizontal line and at the center of the slide plate 2. At this time, the air pipe 28 slides horizontally with the operator and is clamped inside the V-shaped limiting plate 54. Twisting the adjusting bolt 52 can limit the position of different air pipes 28, so that the air pipe 28 is in a horizontal and vertical state. After the limiting is completed, since the upper and lower clamping mechanisms are respectively provided with rubber pads 37, the appearance of the hydraulic pump 21 can be protected from damage during the clamping process. Since the side of the connecting plate 38 closer to the upper clamping ring 3 is connected to the upper clamping ring 3, the connection plate 21 is also connected to the upper clamping ring 3. The ring 3 is fixed to the side closer to the connecting plate 38. Then, the side of the connecting plate 38 closer to the arc-shaped magnetic plate B32 and the side of the arc-shaped magnetic plate B32 closer to the connecting plate 38 rotate relative to each other. When the operator holds the arc-shaped magnetic plate A31 and rotates it diagonally downward toward the arc-shaped magnetic plate B32, the arc-shaped magnetic plate B32 can be driven to clamp diagonally upward toward the left retaining ring 36, and the locking ring 35 clamps diagonally downward toward the arc-shaped magnetic plate A31. The upper retaining ring 3 remains stationary. When the arc-shaped magnetic plate A31 and the arc-shaped magnetic plate B32 are magnetically attracted, the hydraulic pump 21 can be clamped twice, so that the hydraulic pump 21 remains stable during operation. At the same time, it also facilitates the operator's disassembly and installation of the hydraulic pump 21.

[0035] Reference Figure 1 , Figure 2 and Figure 3A detection water tank 11 is fixedly installed on the top of the base plate 1. A conical air nozzle 17 is installed inside the detection water tank 11. A telescopic pump A13 and a telescopic pump B14 are symmetrically installed on the top of the base plate 1. Two slide rails 15 are vertically fixed on the top of the base plate 1. The slide rails 15 have grooves A16 inside. A slider B29 is fixedly installed on the outside of the slide plate 2. The slider B29 slides inside the groove A16. A detection water tank 113 is opened inside the detection water tank 11. Two Z-shaped air nozzles are placed inside the detection water tank 11. The top of the Z-shaped plate 112 is horizontally fixed with an electric push rod 111. The drive end of the electric push rod 111 is fixed with an L-shaped plate A110. The top of the horizontal side of the L-shaped plate A110 is fixed with a conical air nozzle 17. The bottom of the L-shaped plate A110 is provided with two sliders C18. The sliders C18 are slidably disposed inside the Z-shaped plate 112. The bottom of the Z-shaped plate 112 is provided with a groove B19 corresponding to the sliders C18. The top of the base plate 1 is fixed with a high-pressure air tank 12 for providing air pressure to the conical air nozzle 17.

[0036] When the air pipe 28 is engaged with the conical air nozzle 17, the operator first starts the telescopic pump A13 to move the Z-shaped plate 112 upward. At this time, an electric push rod 111 is fixedly installed on the top of the Z-shaped plate 112, and an L-shaped plate A110 is fixedly installed on the drive end of the electric push rod 111. The telescopic pump A13 also drives the L-shaped plate A110 to rise. The conical air nozzle 17 is opened on the outside of the L-shaped plate A110. If different sizes of hydraulic pumps 21 are encountered, the electric push rod 111 can be used to push the L-shaped plate A110 to extend and retract to both sides to correspond to the spacing of different air nozzles. After adjustment, As the L-shaped plate A110 rises, it engages with the air pipe 28 at the top. After engagement, as the L-shaped plate A110 and the top device descend, the hydraulic pump 21 is immersed in the test water tank 113. Since the bottom of the test water tank 11 has a high-pressure air tank 12 that engages with the conical air nozzle 17 and the air pipe 28, the operator can observe the air bubbles in the water. If there are air bubbles, it indicates that there is an air leak inside the hydraulic pump 21. After the test is completed, the top device and the L-shaped plate A110 move up and down on the top of the test water tank 11, causing the conical air nozzle 17 to separate from the air pipe 28.

[0037] Reference Figure 1 and Figure 2The inner side of the slide plate 2 is provided with several grooves C25. Each groove C25 is equipped with an electric slider 23. The bottom of each electric slider 23 is fixedly equipped with a slider A24. The bottom of the slider A24 is fixedly equipped with two support rods 22. The bottom end of the support rod 22 is provided with a rectangular groove 27. The protrusion A39 is fixedly installed in the rectangular groove 27 through a conical block 26. The slide plate 2 is driven to lift and lower on the top of the detection water tank 11 by external force. The bottom of the slide plate 2 is vertically equipped with a support rod 22. The bottom end of the support rod 22 is detachably equipped with a hydraulic pump 21 through a connecting component. The air pipe 28 on the outside of the hydraulic pump 21 is sealed and connected to the conical air nozzle 17.

[0038] When the hydraulic pump 21 is placed in the testing water tank 113 for testing, the telescopic pump B14 can drive the slide plate 2 to slide up and down inside the slide rail 15. The bottom of the slide plate 2 is equipped with the hydraulic pump 21. When it moves downward, the air pipe 28 and the conical air nozzle 17 can cooperate to perform testing. The electric slider 23 inside the slide plate 2 can adjust the position of the hydraulic pump 21 on the L-shaped plate A110. Since the position of the air pipe 28 on the outside of each hydraulic pump 21 is different, the electric slider 23 can drive the hydraulic pump 21 to slide and cooperate with the bottom L-shaped plate A110.

[0039] Reference Figure 4 and Figure 5 An arc-shaped magnetic plate B32 is fixedly installed on the outer side of the lower retaining ring 311. A strip plate B42 and a strip plate A4 are respectively installed on one side of the arc-shaped magnetic plate B32 and the arc-shaped magnetic plate A31. An L-shaped plate B41 and an L-shaped plate C43 are respectively fixedly installed on the outer side of the strip plate A4 and the strip plate B42. The L-shaped plates B41 and C43 are respectively fixed to the outer side of the arc-shaped magnetic plate A31 and the arc-shaped magnetic plate B32 by screws. A sealing strip 44 is provided inside the arc-shaped magnetic plate A31 and the arc-shaped magnetic plate B32.

[0040] When installing or removing the magnetic block 33, since an L-shaped plate B41 is fixedly installed on the outside of the strip plate A4 and an L-shaped plate C43 is fixedly installed on the outside of the strip plate B42, during installation, the L-shaped plates B41 and C43 are tightened to the outside of the arc-shaped magnetic plates A31 and B32 by bolts. The arc-shaped magnetic plates B32 and A31 are provided with sealing strips 44 inside, which can prevent liquid from entering after installation. During disassembly, the magnetic block 33 can be removed by unscrewing the screws on the outside of the L-shaped plates B41 and B42 and then by magnetic metal adsorption.

[0041] In summary, the sealing testing instrument for hydraulic components disclosed in the embodiments of this application, when in use,

[0042] When installing and positioning the hydraulic pump 21, the operator first passes the hydraulic pump 21 through the two clamping mechanisms. During placement, the operator can clamp the bottom end of the hydraulic pump 21 inside the ring 51, so that the hydraulic pump 21 is on a horizontal line and at the center of the slide plate 2. At this time, the air pipe 28 slides horizontally with the operator and is clamped inside the V-shaped limiting plate 54. Twisting the adjusting bolt 52 can limit the position of different air pipes 28, so that the air pipe 28 is in a horizontal and vertical state. After the limiting is completed, since the upper and lower clamping mechanisms are respectively provided with rubber pads 37, the appearance of the hydraulic pump 21 can be protected from damage during the clamping process. Since the side of the connecting plate 38 closer to the upper clamping ring 3 is connected to the upper clamping ring 3, the connection plate 21 is also connected to the upper clamping ring 3. The side of ring 3 closer to connecting plate 38 is fixed to each other. Then, the side of connecting plate 38 closer to arc magnetic plate B32 and the side of arc magnetic plate B32 closer to connecting plate 38 rotate relative to each other. Then, the operator holds arc magnetic plate A31 and rotates it diagonally downward towards arc magnetic plate B32, which can drive arc magnetic plate B32 to clamp in the diagonal upward direction of left retaining ring 36. The locking ring 35 clamps in the diagonal downward direction of arc magnetic plate A31. The upper retaining ring 3 remains stationary. When arc magnetic plate A31 and arc magnetic plate B32 are magnetically attracted, the hydraulic pump 21 can be clamped twice, so that the hydraulic pump 21 remains stable during operation. It also facilitates the disassembly and installation of hydraulic pump 21 by the operator.

[0043] When the air tube 28 is engaged with the conical air nozzle 17, the air tube 28 and the conical air nozzle 17 can cooperate to perform detection when the telescopic pump B14 moves downward. The electric slider 23 inside the slide plate 2 can adjust the position of the hydraulic pump 21 on the L-shaped plate A110. Since the position of the air tube 28 on the exterior of each hydraulic pump 21 is different, the electric slider 23 can drive the hydraulic pump 21 to slide and cooperate with the bottom L-shaped plate A110.

[0044] When the hydraulic pump 21 is placed in the testing water tank 113 for testing, the operator first starts the telescopic pump to drive the L-shaped plate A110 to rise. The L-shaped plate A110 has a conical air nozzle 17 on its outside. If different sizes of hydraulic pumps 21 are encountered, the L-shaped plate A110 can be pushed to extend and retract to both sides by the electric push rod 111 to adjust the spacing of the air nozzles. After adjustment, as the L-shaped plate A110 rises, it can cooperate with the air pipe 28 at the top. After cooperation, as the L-shaped plate A110 and the top device descend, the hydraulic pump 21 is immersed in the testing water tank 113. The operator can then observe the air bubbles in the water. If there are air bubbles, it indicates that there is an air leak inside the hydraulic pump 21. After the test is completed, the top device and the L-shaped plate A110 move up and down on the top of the testing water tank 11, causing the conical air nozzle 17 to separate from the air pipe 28.

[0045] Finally, when installing and removing the magnetic block 33, during installation, the L-shaped plate B41 and L-shaped plate C43 are tightened onto the outside of the arc-shaped magnetic plate A31 and arc-shaped magnetic plate B32 using bolts. After the sealing strip 44 is installed, it can prevent liquid from entering. During disassembly, the magnetic block 33 can be removed by unscrewing the screws on the outside of the L-shaped plate B41 and the strip plate B42 and then by magnetic metal adsorption.

Claims

1. A sealing testing instrument for hydraulic components, characterized in that: Include: A base plate (1) is provided with a detection water tank (11) fixedly installed on the top of the base plate (1), and a conical air nozzle (17) is provided for lifting and lowering inside the detection water tank (11); The slide plate (2) is driven to lift and is set on the top of the detection water tank (11) by external force. A support rod (22) is vertically set at the bottom of the slide plate (2). A hydraulic pump (21) is detachably set at the bottom of the support rod (22) through a connecting component. The air pipe (28) on the outside of the hydraulic pump (21) is sealed and connected to the conical air nozzle (17). An L-shaped beam (5) is fixedly installed at the bottom of the slide plate (2). A ring (51) is fixedly installed at the end of the L-shaped beam (5). The ring (51) is sleeved on the outside of the telescopic end of the hydraulic pump (21). A V-shaped limiting plate (54) is horizontally installed at the bottom of the ring (51). The V-shaped limiting plate (54) is located outside the air pipe (28) to maintain the verticality of the air pipe (28). The connecting assembly includes an upper retaining ring (3) fixedly disposed at the end of the support rod (22) and a lower retaining ring (311) movably connected to the outside of the upper retaining ring (3). The upper retaining ring (3) and the lower retaining ring (311) are located at the top and bottom of the hydraulic pump (21) respectively, and are used to lock the hydraulic pump (21) after it is limited.

2. The sealing testing instrument for hydraulic components according to claim 1, characterized in that: The top of the upper retaining ring (3) is fixedly provided with a protrusion A (39), which is fixedly connected to the bottom end of the support rod (22). A rubber pad (37) is fixedly provided on the inner side of the upper retaining ring (3). A round wheel (34) is fixedly provided on the outer side of the upper retaining ring (3). A rotating locking ring (35) is provided inside the round wheel (34). A bushing (310) is rotatably provided on the side of the locking ring (35) away from the round wheel (34). A left retaining ring (36) and an arc-shaped magnetic plate A (31) are fixedly provided on the outer side of the bushing (310). A lower retaining ring (311) is rotatably provided on the side of the left retaining ring (36) away from the bushing (310). A connecting plate (38) is rotatably provided on the outer side of the lower retaining ring (311). The side of the connecting plate (38) away from the lower retaining ring (311) is fixedly connected to the upper retaining ring (3).

3. The sealing testing instrument for hydraulic components according to claim 2, characterized in that: An arc-shaped magnetic plate B (32) is fixedly provided on the outer side of the lower retaining ring (311). A strip plate B (42) and a strip plate A (4) are respectively provided on one side of the arc-shaped magnetic plate B (32) and the arc-shaped magnetic plate A (31). An L-shaped plate B (41) and an L-shaped plate C (43) are respectively fixedly provided on the outer side of the strip plate A (4) and the strip plate B (42). The L-shaped plate B (41) and the L-shaped plate C (43) are respectively fixed on the outer side of the arc-shaped magnetic plate A (31) and the arc-shaped magnetic plate B (32) by screws. A sealing strip (44) is provided inside the arc-shaped magnetic plate A (31) and the arc-shaped magnetic plate B (32).

4. The sealing testing instrument for hydraulic components according to claim 2, characterized in that: The inner side of the slide plate (2) is provided with a number of slide grooves C (25). Each slide groove C (25) is slidably provided with an electric slider (23). The bottom of each electric slider (23) is fixedly provided with a slider A (24). The bottom of the slider A (24) is fixedly provided with two support rods (22). The bottom end of the support rod (22) is provided with a rectangular groove (27). The protrusion A (39) is fixedly provided in the rectangular groove (27) by a conical block (26).

5. The sealing testing instrument for hydraulic components according to claim 4, characterized in that: An L-shaped beam (5) is fixedly installed on the outside of the support rod (22). A ring (51) is fixedly installed on the bottom of the L-shaped beam (5) and the upper retaining ring (3) on the same axis. A protrusion B (53) is fixedly installed on the bottom of the ring (51). An adjusting bolt (52) is rotatably installed inside the protrusion B (53). One end of the adjusting bolt (52) is rotatably installed on the V-shaped limiting plate (54). The V-shaped limiting plate (54) is slidably connected to the protrusion B (53).

6. The sealing testing instrument for hydraulic components according to claim 1, characterized in that: The top of the base plate (1) is symmetrically provided with a telescopic pump A (13) and a telescopic pump B (14). The top of the base plate (1) is vertically fixed with two slide rails (15). The slide rails (15) are provided with a groove A (16) inside. The outside of the slide plate (2) is fixedly provided with a slider B (29). The slider B (29) is slidably disposed inside the groove A (16).

7. The sealing testing instrument for hydraulic components according to claim 6, characterized in that: The detection water tank (11) has a detection water trough (113) inside. Two Z-shaped plates (112) are placed inside the detection water tank (11). An electric push rod (111) is fixedly installed horizontally on the top of the Z-shaped plate (112). An L-shaped plate A (110) is fixedly installed at the driving end of the electric push rod (111). A conical air nozzle (17) is fixedly installed on the top of the horizontal side of the L-shaped plate A (110). Two sliders C (18) are installed at the bottom of the L-shaped plate A (110). The sliders C (18) are slidably installed inside the Z-shaped plate (112). A groove B (19) is opened at the bottom of the Z-shaped plate (112) corresponding to the sliders C (18). A high-pressure air tank (12) for providing air pressure to the conical air nozzle (17) is fixedly installed on the top of the base plate (1).

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