Life testing device suitable for sealing ring of hydraulic oil cylinder

Abstract

The utility model belongs to the technical field of hydraulic oil cylinder sealing ring service life testing, and particularly relates to a hydraulic oil cylinder sealing ring service life testing device which comprises a bottom plate, a first support is installed on the surface of the bottom plate, a sliding cylinder is connected inside the first support in a penetrating mode, a sliding rod penetrates inside the sliding cylinder, and a first sliding groove is formed in the surface of the sliding rod. A sliding block is connected to the inner wall, close to the first sliding groove, of the sliding barrel, a fixing column is connected to the end of the sliding rod, a sealing ring fixing groove is formed in the surface of the fixing column, an end plate is connected to the other end of the sliding rod, a spring strip is connected between the end plate and the sliding barrel, and a first driving motor is installed on the surface of the first support. According to the utility model, the normal use of the sealing ring of the hydraulic oil cylinder is simulated through the cooperative use of the sliding rod, the fixing column, the sealing ring fixing groove, the end plate, the spring strip, the first driving motor and the eccentric wheel, so that the friction-resistant life test of the sealing ring of the hydraulic oil cylinder is realized, manual assistance is not needed in the process, and the testing efficiency of the sealing ring of the hydraulic oil cylinder is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic cylinder seal ring life testing, specifically relating to a life testing device suitable for hydraulic cylinder seal rings. Background Technology

[0002] Hydraulic cylinder seals are critical components in hydraulic systems used to prevent oil leakage, maintain system pressure, and prevent the ingress of external contaminants. Their performance directly affects the working efficiency, reliability, and service life of the hydraulic cylinder.

[0003] The hydraulic cylinder seal life testing device is a specialized instrument used to evaluate the performance and lifespan of hydraulic cylinder seals under simulated real-world operating conditions. It is a crucial tool for ensuring the reliability of hydraulic systems. By simulating actual operating conditions, the testing device can accurately assess the performance and lifespan of the seals, providing a scientific basis for product development, quality control, and fault analysis.

[0004] Existing hydraulic cylinder seal life testing devices have revealed a serious problem when testing the wear life of seals: the testing devices usually require manual operation, resulting in a lack of automation and low efficiency during use. Utility Model Content

[0005] The purpose of this invention is to provide a life testing device for hydraulic cylinder seals, aiming to solve a serious problem exposed by existing hydraulic cylinder seal life testing devices when testing the wear resistance life of seals. That is, the testing device usually requires manual operation during use, resulting in a lack of automation and low efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a life testing device for hydraulic cylinder seals, comprising a base plate, a first bracket mounted on the surface of the base plate, a slide cylinder penetrating the interior of the first bracket, a slide rod penetrating the interior of the slide cylinder, a first slide groove on the surface of the slide rod, a slider connected to the inner wall of the slide cylinder near the first slide groove, a fixing post connected to the end of the slide rod, a seal fixing groove on the surface of the fixing post, an end plate connected to the other end of the slide rod, a spring strip connected between the end plate and the slide cylinder, a first drive motor mounted on the surface of the first bracket, an eccentric wheel connected to the output end of the first drive motor, a second bracket provided on the surface of the base plate, and a test cylinder connected to the surface of the second bracket.

[0007] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, the first groove and the slider are symmetrically arranged on both sides of the slide rod, and the slide rod and the slider are slidably connected through the first groove.

[0008] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, the end plate and the slide rod are an integral structure, and the end plate and the spring strip form an elastic telescopic structure.

[0009] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, the fixed column and the center line of the test cylinder are at the same position.

[0010] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, a water injection pipe is connected through the surface of the test cylinder, a transparent tube is connected through the surface of the test cylinder, a scale is connected to the surface of the transparent tube, a threaded tube is connected through the interior of the second bracket, a threaded rod is connected through the interior of the threaded tube, the threaded rod is mounted on the surface of the base plate through a bearing seat, the other end of the threaded rod is connected to the output end of the second drive motor, a second sliding groove is connected to the bottom side of the second bracket, and a guide rail is connected to the surface of the base plate.

[0011] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, the threaded rod and the threaded tube are connected by a thread, and the threaded rod and the bearing seat form a rotating structure.

[0012] As a preferred embodiment of the present invention for testing the life of hydraulic cylinder seals, the second bracket is slidably connected to the guide rail via the second sliding groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, through the combined use of a sliding rod, a fixed column, a sealing ring fixing groove, an end plate, a spring strip, a first drive motor, and an eccentric wheel, can simulate the normal use of a hydraulic cylinder sealing ring, thereby enabling the testing of the friction life of the hydraulic cylinder sealing ring. This process requires no manual assistance, thus improving the efficiency of hydraulic cylinder sealing ring testing.

[0015] This invention, through the combined use of a second bracket, a water injection pipe, a transparent pipe, a scale, a threaded pipe, a threaded rod, a bearing seat, and a second drive motor, allows for timely observation of the time it takes for the hydraulic cylinder seal ring to lose its sealing effect due to wear, thus making the test structure visible. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 3 This is a partial sectional view of the fixed column drive structure of this utility model;

[0020] Figure 4 This is an exploded view of the test cylinder connection structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of the test cylinder of this utility model.

[0022] In the diagram: 1. Base plate; 2. First bracket; 3. Slide cylinder; 4. Slide rod; 5. First slide groove; 6. Slider; 7. Fixed column; 8. Sealing ring fixing groove; 9. End plate; 10. Spring strip; 11. First drive motor; 12. Eccentric wheel; 13. Second bracket; 14. Test cylinder; 15. Water injection pipe; 16. Transparent tube; 17. Scale; 18. Threaded pipe; 19. Threaded rod; 20. Bearing seat; 21. Second drive motor; 22. Second slide groove; 23. Guide rail. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5This utility model provides the following technical solution: a life testing device for hydraulic cylinder seals, comprising a base plate 1, a first bracket 2 mounted on the surface of the base plate 1, a slide cylinder 3 penetrating inside the first bracket 2, a slide rod 4 penetrating inside the slide cylinder 3, a first slide groove 5 on the surface of the slide rod 4, a slider 6 connected to the inner wall of the slide cylinder 3 near the first slide groove 5, a fixing post 7 connected to the end of the slide rod 4, a seal fixing groove 8 on the surface of the fixing post 7, an end plate 9 connected to the other end of the slide rod 4, a spring strip 10 connected between the end plate 9 and the slide cylinder 3, a first drive motor 11 mounted on the surface of the first bracket 2, an eccentric wheel 12 connected to the output end of the first drive motor 11, a second bracket 13 provided on the surface of the base plate 1, and a test cylinder 14 connected to the surface of the second bracket 13.

[0025] Preferably, the first groove 5 and the slider 6 are symmetrically arranged on both sides of the slide rod 4, and the slide rod 4 is slidably connected to the slider 6 through the first groove 5.

[0026] In practical use, when the slider 4 is subjected to a force, it can drive the first slide groove 5 to slide on the surface of the slider 6, which can limit the movement direction of the slider 4.

[0027] Preferably, the end plate 9 and the slide bar 4 are an integral structure, and the end plate 9 and the spring strip 10 form an elastic telescopic structure.

[0028] In practical use, when the end plate 9 is subjected to a force, it can compress the spring strip 10. After the force disappears, the spring strip 10 can reset by squeezing the end plate 9 with its own elasticity.

[0029] Preferably, the center line of the fixed column 7 and the test cylinder 14 are at the same position.

[0030] Preferably, a water injection pipe 15 is connected through the surface of the test cylinder 14, a transparent pipe 16 is connected through the surface of the test cylinder 14, a scale 17 is connected to the surface of the transparent pipe 16, a threaded pipe 18 is connected through the interior of the second bracket 13, a threaded rod 19 is connected through the interior of the threaded pipe 18, the threaded rod 19 is mounted on the surface of the base plate 1 through the bearing seat 20, the other end of the threaded rod 19 is connected to the output end of the second drive motor 21, a second slide groove 22 is connected to the bottom side of the second bracket 13, and a guide rail 23 is connected to the surface of the base plate 1.

[0031] Preferably, the threaded rod 19 and the threaded tube 18 are connected by a thread, and the threaded rod 19 and the bearing seat 20 form a rotating structure.

[0032] In practical use, when the threaded rod 19 rotates, it can drive the threaded tube 18 to move laterally through the threaded connection. When the threaded tube 18 moves laterally, it can drive the second bracket 13 to move laterally, which in turn can drive the test cylinder 14 to move laterally, thereby adjusting the position of the test cylinder 14.

[0033] Preferably, the second bracket 13 is slidably connected to the guide rail 23 via the second slide groove 22.

[0034] In practical use, when the second bracket 13 is subjected to a force, it can drive the second slide groove 22 to slide on the surface of the guide rail 23, which can restrict the movement direction of the second bracket 13.

[0035] Working principle: When using this hydraulic cylinder seal ring life testing device, firstly, the hydraulic cylinder seal ring to be tested is fitted into the seal ring fixing groove 8 of the fixed column 7. Then, the second drive motor 21 can be run. When the second drive motor 21 runs, it can drive the threaded rod 19 to rotate. When the threaded rod 19 rotates, it can drive the threaded tube 18 to move laterally. When the threaded tube 18 moves laterally, it can drive the second bracket 13 to move laterally. When the second bracket 13 drives the test cylinder 14 to fit onto the surface of the hydraulic cylinder seal ring and seals the opening of the test cylinder 14, the second drive motor 21 is stopped. Then, water is injected into the test cylinder 14 through the water injection pipe 15. Then, the second drive motor 21 continues to run. When the second drive motor 21 continues to run, it can drive the test cylinder 14 to move laterally until the hydraulic cylinder seal ring moves to the other side of the water injection pipe 15. At this time, the water is squeezed into the transparent tube 16, and the water level can be read through the scale 17.

[0036] Next, the first drive motor 11 can be operated. When the first drive motor 11 is running, the eccentric wheel 12 rotates. As the eccentric wheel 12 rotates, its long end rotates to the end plate 9. During this process, the end plate 9 is gradually compressed, which can drive the slide rod 4 to move laterally inside the slide cylinder 3. During this process, the end plate 9 can compress the spring strip 10. When the slide rod 4 moves laterally, it can drive the hydraulic cylinder seal ring to move away from the water injection pipe 15 inside the test cylinder 14 through the fixed column 7. At this time, the water inside the test cylinder 14 is compressed and will move into the transparent tube 16, thereby causing the water level inside the transparent tube 16 to rise. When the short end of the eccentric wheel 12 rotates to the point where it can drive the slide rod 4 to gradually move away from the water injection pipe 15 through its own elasticity, the water level inside the transparent tube 16 will rise. The slide bar 4 gradually resets, which in turn drives the hydraulic cylinder seal ring to gradually reset via the fixed column 7. At this time, the water inside the transparent tube 16 gradually flows back into the test cylinder 14, thereby causing the water level inside the transparent tube 16 to drop. This reciprocating motion causes the hydraulic cylinder seal ring to reciprocate and rub inside the test cylinder 14, thus simulating the use of the hydraulic cylinder seal ring for life testing. When the hydraulic cylinder seal ring wears down and the sealing effect decreases, water can leak from the end of the test cylinder 14 through the hydraulic cylinder seal ring. This will prevent the water level inside the transparent tube 16 from returning to the highest position, thus allowing timely detection of the wear condition of the hydraulic cylinder seal ring.

[0037] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A life test device suitable for hydraulic cylinder seal ring, comprising a base plate (1), characterized in that: The surface of the bottom plate (1) is provided with a first support (2), the inside of the first support (2) is provided with a sliding cylinder (3) penetratingly connected, the inside of the sliding cylinder (3) is provided with a sliding rod (4) penetratingly connected, the surface of the sliding rod (4) is provided with a first sliding groove (5), the inner wall of the sliding cylinder (3) close to the first sliding groove (5) is connected with a sliding block (6), the end of the sliding rod (4) is connected with a fixed column (7), the surface of the fixed column (7) is provided with a sealing ring fixed groove (8), the other end of the sliding rod (4) is connected with an end plate (9), the end plate (9) and the sliding cylinder (3) are connected with a spring strip (10), the surface of the first support (2) is provided with a first driving motor (11), the output end of the first driving motor (11) is connected with an eccentric wheel (12), the surface of the bottom plate (1) is provided with a second support (13), the surface of the second support (13) is connected with a test cylinder (14).

2. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 1, characterized in that: The first sliding groove (5) and the sliding block (6) are symmetrically arranged on both sides of the sliding rod (4), and the sliding rod (4) is in sliding connection with the first sliding groove (5) and the sliding block (6).

3. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 1, characterized in that: The end plate (9) and the sliding rod (4) are in an integral structure, and the end plate (9) and the spring strip (10) are in an elastic extension structure.

4. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 1, wherein: The fixed column (7) and the center line of the test cylinder (14) are in the same position.

5. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 1, wherein: The surface of the test cylinder (14) is penetratingly connected with a water injection pipe (15), the surface of the test cylinder (14) is penetratingly connected with a transparent pipe (16), the surface of the transparent pipe (16) is connected with a scale (17), the inside of the second support (13) is penetratingly connected with a threaded pipe (18), the inside of the threaded pipe (18) is penetratingly connected with a threaded rod (19), the threaded rod (19) is installed on the surface of the bottom plate (1) through a bearing seat (20), the other end of the threaded rod (19) is connected with the output end of a second driving motor (21), the bottom side of the second support (13) is connected with a second sliding groove (22), and the surface of the bottom plate (1) is connected with a guide rail (23).

6. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 5, characterized in that: The threaded rod (19) and the threaded pipe (18) are in threaded connection, and the threaded rod (19) and the bearing seat (20) are in a rotating structure.

7. The device for testing the life of the sealing ring for the hydraulic cylinder according to claim 6, characterized in that: The second support (13) is in sliding connection with the guide rail (23) through the second sliding groove (22).

Images