Fatigue detection device for cylinder barrel of hydraulic cylinder under high pressure working condition

Abstract

The utility model belongs to the technical field of hydraulic cylinder detection, specifically disclose the hydraulic cylinder cylinder anti -fatigue detection device based on high pressure working condition, be used to solve when carrying out detection work to hydraulic cylinder cylinder, will appear the shaking on the device because of vibration and so on reason, thereby seriously influence the accuracy of detection result, specifically including base and moving plate, the upper end fixed connection of moving plate has the connecting frame, the inside of connecting frame has seted up guide hole, the inside of connecting frame is close to the position of guide hole and is provided with the bushing, one aspect is through bushing, screw rod, guide rod, pressure plate, placement board etc. Component can be limited to hydraulic cylinder main part, effectively avoided the shaking, can also improve the accuracy of detection result, on the other hand again through the connecting block, slider, card rod, telescopic link, spring etc. Component can adjust the height of moving plate, and then can satisfy the use demand of different staff, can also strengthen the applicability of device.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder testing technology, and in particular to a hydraulic cylinder barrel fatigue testing device based on high-pressure working conditions. Background Technology

[0002] This hydraulic cylinder fatigue testing device, designed for high-pressure operating conditions, accurately simulates actual load conditions. During testing, hydraulic oil is alternately introduced into both sides of the cylinder, causing the pressure on both sides of the piston to change periodically, creating an alternating load. Equipped with a high-precision pressure sensor, the device monitors pressure fluctuations in real time. Combined with a computer numerical control system, it flexibly adjusts the load frequency and amplitude to simulate fatigue processes under various high-pressure scenarios. Its advantages are significant: it completes the test without mechanical reciprocating motion, and is simple to operate with low power consumption.

[0003] In existing technologies, when using a testing device to inspect the cylinder barrel of a hydraulic cylinder, the cylinder barrel may shake due to vibration or other reasons, which seriously affects the accuracy of the test results.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that can limit the movement of the hydraulic cylinder body, effectively preventing swaying and improving the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic cylinder barrel fatigue testing device under high pressure conditions to solve the aforementioned problems.

[0006] The purpose of this utility model can be achieved through the following technical solution: a hydraulic cylinder barrel fatigue testing device under high pressure conditions, including a base and a movable plate, a connecting frame fixedly connected to the upper end of the movable plate, a guide hole opened inside the connecting frame, a rotating sleeve arranged inside the connecting frame near the guide hole, a guide rod arranged inside the guide hole, a pressure plate fixedly connected to the lower end of the guide rod, a lead screw fixedly connected to the middle of one side of the pressure plate, and a placement plate fixedly connected to the upper end of the movable plate near the connecting frame;

[0007] The upper end of the placement plate is provided with a hydraulic cylinder body, the outer side of the hydraulic cylinder body is provided with an oil injection pipe, the outer side of the hydraulic rod is provided with an oil drain pipe away from the oil injection pipe, the upper edge of the base is provided with a processing box, and the upper end of the processing box is provided with a first hose.

[0008] An oil tank is located at the upper end of the base near the processing box. A connecting pipe is fixedly connected to the front of the oil tank. A booster is located at the other end of the connecting pipe. A second hose is located at the upper end of the booster.

[0009] Preferably, an adjusting plate is fixedly connected to the lower end of the movable plate, the adjusting plate has a locking hole inside, a support plate is provided on the outer side of the adjusting plate, and a connecting block is fixedly connected to the left side of the support plate.

[0010] Preferably, the connecting block has a slider inside, a locking rod is fixedly connected to one side of the slider, a telescopic rod is provided on the other side of the slider, a spring is sleeved on the outside of the telescopic rod, and a pull rod is fixedly connected to the left side of the slider near the telescopic rod.

[0011] Preferably, the internal thread of the rotating sleeve is adapted to the external thread of the lead screw.

[0012] Preferably, the number of adjustment plates is two sets, and they are symmetrically arranged about the center line of the moving plate.

[0013] Preferably, the slider slides inside the connecting block via a pull rod, a telescopic rod, and a spring.

[0014] The beneficial effects of this utility model are:

[0015] (1) By rotating the rotating sleeve, the screw moves downward under the action of its internal thread, and the pressure plate moves together and sticks tightly to the outside of the hydraulic cylinder body to achieve the limit, so that normal testing can be carried out. Similarly, by rotating the rotating sleeve in the opposite direction, the screw drives the pressure plate to move in the opposite direction, releasing the limit on the hydraulic cylinder body, and the operator can remove it from the device. In addition, the setting of the guide rod and the guide hole can improve the stability of the pressure plate when it moves. The hydraulic cylinder body can be limited by the rotating sleeve, screw, guide rod, pressure plate, and placement plate, which effectively avoids shaking and also improves the accuracy of the test results.

[0016] (2) By pulling the lever, the lever drives the slider to move and compresses the telescopic rod and spring. The lever then disengages from the inside of the locking hole, releasing the limit on the adjusting plate. The moving plate is lifted upward, and the moving plate drives the adjusting plate to slide inside the support plate. After it reaches the preset height, the spring rebounds and pushes the slider to move in the opposite direction. The lever passes through another set of locking holes again to limit the adjusting plate, thus completing the adjustment of the height of the moving plate. The height of the moving plate can be adjusted by connecting block, slider, lever, telescopic rod, spring and other components, thereby meeting the needs of different workers and enhancing the applicability of the device. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings;

[0018] Figure 1 This is a three-dimensional structural view of the entire utility model;

[0019] Figure 2This is a schematic diagram of the connecting frame structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the pressure plate structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the movable plate structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the connecting block of this utility model.

[0023] Legend: 1. Base; 2. Movable plate; 3. Connecting frame; 4. Guide hole; 5. Rotary sleeve; 6. Guide rod; 7. Pressure plate; 8. Lead screw; 9. Placement plate; 10. Hydraulic cylinder body; 11. Oil injection pipe; 12. Oil drain pipe; 13. Processing box; 14. First hose; 15. Oil tank; 16. Connecting pipe; 17. Intensifier; 18. Second hose; 19. Support plate; 20. Connecting block; 21. Adjusting plate; 22. Locking hole; 23. Slider; 24. Locking rod; 25. Telescopic rod; 26. Spring; 27. Pull rod. Detailed Implementation

[0024] 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.

[0025] Example 1: The application background of this utility model is based on the fact that when using a testing device to test the cylinder barrel of a hydraulic cylinder, it may shake on the device due to vibration and other reasons, which seriously affects the accuracy of the test results. The technical solution of this utility model is to solve the problem of how to limit the hydraulic cylinder body 10, effectively avoid shaking, and at the same time improve the accuracy of the test results.

[0026] Please see Figure 1 - Figure 5As shown, this embodiment is a hydraulic cylinder barrel fatigue testing device under high pressure conditions, including a base 1 and a movable plate 2. A connecting frame 3 is fixedly connected to the upper end of the movable plate 2. A guide hole 4 is opened inside the connecting frame 3. A rotating sleeve 5 is arranged inside the connecting frame 3 near the guide hole 4. A guide rod 6 is arranged inside the guide hole 4. A pressure plate 7 is fixedly connected to the lower end of the guide rod 6. A lead screw 8 is fixedly connected to the middle of one side of the pressure plate 7. A placement plate 9 is fixedly connected to the upper end of the movable plate 2 near the connecting frame 3. A hydraulic... The hydraulic cylinder body 10 has an oil injection pipe 11 on its outer side and an oil drain pipe 12 on its outer side away from the oil injection pipe 11. A treatment box 13 is located at the upper edge of the base 1, and a first hose 14 is located at the upper end of the treatment box 13. An oil tank 15 is located at the upper end of the base 1 near the treatment box 13. A connecting pipe 16 is fixedly connected to the front side of the oil tank 15. A booster is located at the other end of the connecting pipe 16, and a second hose 18 is located at the upper end of the booster. The internal thread of the rotating sleeve 5 is compatible with the external thread of the lead screw 8.

[0027] In use, first connect the first hose 14 and the second hose 18 to the drain pipe 12 and the injection pipe 11, respectively. Under the action of the pump inside the oil tank 15, the hydraulic oil in the oil tank 15 enters the booster through the connecting pipe 16. The booster can increase the pressure, so that the hydraulic cylinder body 10 is in a high-pressure state, thereby injecting high-pressure hydraulic oil into it, thereby controlling the piston extension and retraction. Under the coordinated action of the pump and other components, the piston moves cyclically. Throughout the process, the staff uses external auxiliary equipment to observe the condition of the hydraulic cylinder and one end of the cylinder barrel, and records the various test results in detail for subsequent analysis and processing.

[0028] During testing, the pressure plate 7 can be used for fixation. Specifically, rotating the rotating sleeve 5 causes the lead screw 8 to move downwards under the action of its internal threads, and the pressure plate 7 moves together and presses tightly against the outside of the hydraulic cylinder body 10 to achieve a limit, allowing normal testing to proceed. Similarly, rotating the rotating sleeve 5 in the opposite direction causes the lead screw 8 to drive the pressure plate 7 to move in the opposite direction, releasing the limit on the hydraulic cylinder body 10, allowing the operator to remove it from the device. In addition, the guide rod 6 and guide hole 4 can improve the stability of the pressure plate 7 during movement. Through the rotating sleeve 5, lead screw 8, guide rod 6, pressure plate 7, and placement plate 9, the hydraulic cylinder body 10 can be limited, effectively preventing shaking and improving the accuracy of the test results.

[0029] Example 2: Please refer to Figure 1 - Figure 5As shown, this embodiment is a hydraulic cylinder barrel fatigue testing device based on high pressure conditions. The lower end of the moving plate 2 is fixedly connected to the adjusting plate 21. The adjusting plate 21 has a locking hole 22 inside. The outer side of the adjusting plate 21 is provided with a support plate 19. The left side of the support plate 19 is fixedly connected to the connecting block 20. The connecting block 20 is provided with a slider 23. One side of the slider 23 is fixedly connected to the locking rod 24. The other side of the slider 23 is provided with a telescopic rod 25. The telescopic rod 25 is sleeved with a spring 26. The left side of the slider 23 is fixedly connected to the position near the telescopic rod 25. There are two sets of adjusting plates 21, and they are symmetrically arranged about the center line of the moving plate 2. The slider 23 slides inside the connecting block 20 through the pull rod 27, the telescopic rod 25, and the spring 26.

[0030] When the height of the movable plate 2 needs to be adjusted, the lever 24 is pulled, the lever 27 moves the slider 23 and compresses the telescopic rod 25 and the spring 26. The lever 24 then disengages from the inside of the locking hole 22, releasing the restriction on the adjusting plate 21. The movable plate 2 is then lifted upwards, and the movable plate 2 moves the adjusting plate 21 to slide inside the support plate. After it reaches the preset height, the spring 26 rebounds and pushes the slider 23 to move in the opposite direction. The lever 24 then passes through another set of locking holes 22 to limit the adjusting plate 21, thus completing the height adjustment of the movable plate 2. The height of the movable plate 2 can be adjusted by the components such as the connecting block 20, slider 23, lever 24, telescopic rod 25, and spring 26, thereby meeting the usage needs of different workers and enhancing the applicability of the device.

[0031] As can be seen from Embodiments 1 and 2, on the one hand, the hydraulic cylinder body 10 can be limited by components such as the rotating sleeve 5, lead screw 8, guide rod 6, pressure plate 7, and placement plate 9, which effectively avoids shaking and improves the accuracy of the test results; on the other hand, the height of the movable plate 2 can be adjusted by components such as the connecting block 20, slider 23, clamping rod 24, telescopic rod 25, and spring 26, which can meet the usage needs of different workers and enhance the applicability of the device.

[0032] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A fatigue testing device for hydraulic cylinder barrels under high-pressure conditions, comprising a base (1) and a movable plate (2), characterized in that: The upper end of the movable plate (2) is fixedly connected to a connecting frame (3), the connecting frame (3) has a guide hole (4) inside, a rotating sleeve (5) is provided inside the connecting frame (3) near the guide hole (4), a guide rod (6) is provided inside the guide hole (4), a pressure plate (7) is fixedly connected to the lower end of the guide rod (6), a screw rod (8) is fixedly connected to the middle of one side of the pressure plate (7), and a placement plate (9) is fixedly connected to the upper end of the movable plate (2) near the connecting frame (3); The upper end of the placement plate (9) is provided with a hydraulic cylinder body (10), the outer side of the hydraulic cylinder body (10) is provided with an oil injection pipe (11), the outer side of the hydraulic rod is provided with an oil drain pipe (12) away from the oil injection pipe (11), the upper edge of the base (1) is provided with a processing box (13), and the upper end of the processing box (13) is provided with a first hose (14). An oil tank (15) is provided at the upper end of the base (1) near the processing box (13). A connecting pipe (16) is fixedly connected to the front side of the oil tank (15). A booster is provided at the other end of the connecting pipe (16). A second hose (18) is provided at the upper end of the booster.

2. The hydraulic cylinder barrel fatigue testing device based on high-pressure operating conditions according to claim 1, characterized in that, The lower end of the movable plate (2) is fixedly connected to an adjusting plate (21). The adjusting plate (21) has a card hole (22) inside. A support plate (19) is provided on the outside of the adjusting plate (21). A connecting block (20) is fixedly connected to the left side of the support plate (19).

3. The hydraulic cylinder barrel fatigue testing device based on high-pressure operating conditions according to claim 2, characterized in that, The connecting block (20) has a slider (23) inside. A locking rod (24) is fixedly connected to one side of the slider (23). A telescopic rod (25) is provided on the other side of the slider (23). A spring (26) is sleeved on the outside of the telescopic rod (25). A pull rod (27) is fixedly connected to the left side of the slider (23) near the telescopic rod (25).

4. The hydraulic cylinder barrel fatigue testing device based on high-pressure operating conditions according to claim 1, characterized in that, The internal thread of the rotating sleeve (5) is adapted to the external thread of the lead screw (8).

5. The hydraulic cylinder barrel fatigue testing device based on high-pressure operating conditions according to claim 2, characterized in that, The number of the adjustment plates (21) is two sets, and they are symmetrically arranged about the center line of the moving plate (2).

6. The hydraulic cylinder barrel fatigue testing device based on high-pressure operating conditions according to claim 3, characterized in that, The slider (23) slides inside the connecting block (20) via the pull rod (27), the telescopic rod (25), and the spring (26).

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