Hydraulic cylinder loading experiment device

Abstract

The invention relates to a hydraulic cylinder loading experiment device applied to the technical field of hydraulic cylinder loading experiments, which comprises a motor driving mechanism and a signal processing system, and is characterized in that the motor driving mechanism comprises a driving motor shell, a driving motor arranged in the driving motor shell and a rotating disc arranged at the output end of the driving motor; a fixing rod A is arranged on one side of the rotating disc and rotationally connected with a first-stage transmission rod, the first-stage transmission rod is hinged to a second-stage transmission rod, a pressure sensor is arranged at the end of the second-stage transmission rod, and a valve assembly is installed at a hydraulic oil inlet of the hydraulic cylinder body. The signal processing system comprises a platform moving module and a performance detection module, the air tightness of the hydraulic cylinder is detected by using an air pressure detection method through the structure, hydraulic oil is not used any more, so that an experiment table is not easy to pollute, a pressure monitoring method is used for replacing an original visual inspection mode with poor detection precision, and the detection accuracy is improved. And the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to a loading experiment device, in particular to a hydraulic cylinder loading experiment device applied in the technical field of hydraulic cylinder loading experiments. Background Art

[0002] The hydraulic cylinder is mainly used to convert hydraulic energy into mechanical energy of linear motion. In order to ensure the stability of the hydraulic cylinder's operating state, it is necessary to perform a loading test on the hydraulic cylinder during production and testing. In the prior art, the structure of the hydraulic cylinder is as follows: Figure 1 As shown, it includes a hydraulic cylinder telescopic rod, one end of which is arranged in the hydraulic cylinder body, and a hydraulic oil inlet A and a hydraulic oil inlet B are respectively arranged on both sides of the hydraulic cylinder body. When the hydraulic cylinder air tightness test is performed on the hydraulic cylinder, most of the current hydraulic cylinder loading test devices need to fill hydraulic oil into the hydraulic oil inlet A and the hydraulic oil inlet B for testing. This method will cause hydraulic oil overflow when the hydraulic cylinder air tightness is poor, which is easy to cause pollution to the test bench, and the hydraulic oil needs to be filled back and forth multiple times when filling, thereby expelling the air in the hydraulic cylinder, resulting in low detection efficiency.

[0003] The specification of Chinese invention patent CN202110910386.X discloses a hydraulic cylinder barrel high-pressure leak detection device, which includes a leak detection machine stand, the leak detection machine stand includes a protective cover assembly, the protective cover assembly is provided with an auxiliary pad head assembly for fixing the cylinder barrel, the leak detection chamber assembly for cylinder barrel leak detection is provided inside the leak detection machine stand and on one side of the auxiliary pad head assembly, and the cylinder barrel is placed in the leak detection chamber assembly in the above invention. Position the tooling, close the protective door manually, press the start button, the slide plate will send the positioning tooling and the cylinder into the sealing pressure head, the clamping mechanism will clamp the cylinder, the water inlet valve will be opened, the leak detection chamber assembly will be filled with water, and then the high-pressure air valve will be opened to perform high-pressure detection on the cylinder, and then the pressure sensor will detect whether the pressure is qualified. At the same time, visually check whether there are bubbles in the cylinder in the leak detection chamber assembly. After it is determined to be qualified, the high-pressure compressed air in the cylinder cavity will be emptied, the water level in the leak detection chamber assembly will drop, and all mechanisms will return to their original positions to complete the high-pressure side leakage detection of the cylinder.

[0004] When implementing the above experiment, air is injected into the hydraulic oil inlet A and hydraulic oil inlet B of the hydraulic cylinder to determine whether the pressure detection pressure of the pressure sensor is qualified, and visually check whether there are bubbles in the cylinder in the leak detection chamber assembly. The detection accuracy is poor. When the leakage point is small, the bubbles coming out of the cylinder are small and difficult to detect with the naked eye. It takes a long time for small bubbles to form larger bubbles that can be seen by the human eye, which causes the experimenters to observe for a long time and easily miss things, affecting the detection results and efficiency. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that, by visual inspection, whether there are bubbles coming out of the cylinder in the leak detection chamber assembly is checked, and the detection accuracy is poor. When the leakage point is small, the bubbles coming out of the cylinder are small and difficult to detect with the naked eye. Moreover, it takes a long time for the small bubbles to form larger bubbles visible to the human eye, which causes the experimenters to observe for a long time and easily miss things, thus affecting the detection results and detection efficiency.

[0006] In order to solve the above problems, the present invention provides a hydraulic cylinder loading experimental device, including a motor driving mechanism and a signal processing system; the motor driving mechanism includes a driving motor housing, a driving motor installed inside the driving motor housing, and a rotating disk installed at the output end of the driving motor, a fixed rod A is arranged on one side of the rotating disk, the fixed rod A is rotatably connected with a primary transmission rod, the primary transmission rod is hinged with a secondary transmission rod, a pressure sensor is arranged at the end of the secondary transmission rod, a secondary transmission housing is arranged on the outer ring of the secondary transmission rod, a primary transmission housing is arranged at one end of the secondary transmission housing, a terminal housing is arranged at the other end of the primary transmission housing, a control panel is installed on the outside of the terminal housing, and valve assemblies are installed at the hydraulic oil inlet A and the hydraulic oil inlet B of the hydraulic cylinder body; the signal processing system includes a platform moving module and a performance detection module, the platform moving module is electrically connected to the control panel, the motor driving platform and the hydraulic cylinder supporting platform respectively, and the performance detection module is electrically connected to the pressure sensor and the control panel respectively.

[0007] In the above hydraulic cylinder loading test device, the air pressure detection method is used to detect the air tightness of the hydraulic cylinder, and the pressure monitoring method is also used for verification, so as to improve the accuracy of the device and make the test bench less likely to be contaminated.

[0008] As a further improvement of the present application, the motor drive mechanism is fixed on a motor drive platform, and the motor drive platform includes two motor support columns. Adjustment gears A are provided at the lower ends of the two motor support columns. The middle part of the adjustment gear A is threadedly connected to the motor support column through a stud. A support plate is provided below the motor support column, and the motor support column is movably connected to the movable hole of the support column on the support plate.

[0009] As a further improvement of the present application, a vertical adjustment motor A is fixed to the bottom of the support plate, and the output end of the vertical adjustment motor A is connected to a driving rod A. Two driving gears A are installed on the driving rod A. Both driving gears A are engaged with the adjustment gear A, and the platform moving module is electrically connected to the vertical adjustment motor A.

[0010] As a further improvement of the present application, the hydraulic cylinder support platform includes four hydraulic cylinder support columns and a hydraulic cylinder support plate. The four hydraulic cylinder support columns are all installed at the bottom of the hydraulic cylinder support plate. A vertical adjustment motor B is installed at the bottom of the hydraulic cylinder support plate. The output end of the vertical adjustment motor B is connected to a driving rod B. Two driving gears B are provided on the driving rod B. The bottom end of the driving gear B is meshed with an adjusting gear B. The middle part of the adjusting gear B is threadedly connected to the support column in the hydraulic cylinder through a stud, and the platform moving module is electrically connected to the vertical adjustment motor B.

[0011] As another improvement of the present application, the hydraulic cylinder support column includes an outer hydraulic cylinder support column and an inner hydraulic cylinder support column arranged inside the outer hydraulic cylinder support column. A moving motor B is arranged at the bottom of the inner hydraulic cylinder support column, a moving gear B is installed at the output end of the moving motor B, an adjusting gear B is arranged at the top of the inner hydraulic cylinder support column, and the platform moving module is electrically connected to the moving motor B.

[0012] As another improved supplement of the present application, a mobile motor A is arranged on the support plate, and a mobile gear A is arranged under each mobile motor A. The mobile gear A and the mobile gear B are both engaged with the rack on the sliding track, and the platform moving module is electrically connected to the mobile motor A.

[0013] As another improved supplement of the present application, the valve assembly includes a valve housing, a valve blocking body is arranged inside the valve housing, an elastic part is arranged inside the valve blocking body, an air pressure detection device is fixed to the lower end of the elastic part, a plurality of detection device fixing parts are surrounded by the outer ring of the air pressure detection device, an end of the detection device fixing part away from the air pressure detection device is fixed to the inner wall of the valve housing, and the performance detection module is electrically connected to the air pressure detection device.

[0014] As another improvement of the present application, a fixing rod B is transversely inserted into one end of the primary transmission rod close to the secondary transmission rod, and the fixing rod B is inserted into the end of the secondary transmission rod.

[0015] To sum up, the invention does not require additional injection of hydraulic oil into the hydraulic cylinder. Before testing, the hydraulic cylinder support platform and the motor drive platform will be adjusted to reasonable positions through the control panel to facilitate the installation of the hydraulic cylinder. Valve assemblies will be installed on the hydraulic oil inlet A and the hydraulic oil inlet B, and the secondary transmission rod will be connected to the hydraulic cylinder telescopic rod. When the test starts, the driving motor will first drive the hydraulic cylinder telescopic rod to a certain position and then lock it. At this time, the air pressure inside the hydraulic cylinder body will change, and this change will exert a force on the hydraulic cylinder telescopic rod. In this way, the values ​​of the air pressure detection device and the pressure sensor are monitored for a period of time to see if they change, so as to determine whether the air tightness of the hydraulic cylinder is qualified. The above method realizes the use of air pressure detection method to detect the air tightness of the hydraulic cylinder, and also uses pressure monitoring method for verification, thereby improving the accuracy of the device and making the test bench less likely to be contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of a hydraulic cylinder in the prior art; Figure 2 This is a three-dimensional structural diagram of a hydraulic cylinder loading experimental device according to a first embodiment of the present application; Figure 3 This is an exploded view of a motor drive device according to a first embodiment of the present application; Figure 4 This is an exploded view of the motor drive platform of the first embodiment of the present application; Figure 5 This is an exploded view of the hydraulic cylinder support platform of the first embodiment of the present application; Figure 6 This is an exploded view of a hydraulic cylinder support column according to a first embodiment of the present application; Figure 7 This is an exploded view of a valve according to a second embodiment of the present application; Figure 8 This is a cross-sectional view of a valve according to a second embodiment of the present application; Fig. 9 This is a block diagram of the signal processing system control principle of the second embodiment of the present application.

[0017] Description of the numbers in the figure: 1. Motor drive mechanism; 2. Motor drive platform; 3. Hydraulic cylinder support platform; 4. Hydraulic cylinder; 5. Sliding track; 111. Drive motor housing; 112. Drive motor; 113. Rotating plate; 114. Fixed rod A; 121. End housing; 122. Primary transmission housing; 123. Secondary transmission housing; 124. Control panel; 131. Primary transmission rod; 132. Fixed rod B; 133. Secondary transmission rod; 134. Pressure sensor; 21. Motor support column; 22. Support column movable hole; 23. Support plate; 24. Moving motor A; 25. Moving gear A; 26. Adjusting gear A; 27. Drive rod A; 28 , driving gear A; 29, vertical adjustment motor A; 31, hydraulic cylinder support plate; 32, hydraulic cylinder support column; 41, hydraulic cylinder telescopic rod; 42, hydraulic cylinder body; 43, hydraulic oil inlet A; 44, hydraulic oil inlet B; 46, valve assembly; 321, hydraulic cylinder outer support column; 322, hydraulic cylinder inner support column; 323, moving motor B; 324, moving gear B; 325, driving gear B; 326, vertical adjustment motor B; 327, driving rod B; 328, adjusting gear B; 461, valve housing; 462, valve plugging body; 463, elastic member; 464, air pressure detection device; 465, detection device fixing member. DETAILED DESCRIPTION

[0018] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0019] The first implementation method: See also Figure 2 , Figure 3 and Fig. 9 A hydraulic cylinder loading experimental device includes a motor drive mechanism 1 and a signal processing system; the motor drive mechanism 1 includes a drive motor housing 111, a drive motor 112 installed inside the drive motor housing 111, and a rotating disk 113 installed at the output end of the drive motor 112, a fixed rod A114 is arranged on one side of the rotating disk 113, the fixed rod A114 is rotatably connected to a primary transmission rod 131, the primary transmission rod 131 is hinged to a secondary transmission rod 133, a fixed rod B132 is transversely inserted at one end of the primary transmission rod 131 close to the secondary transmission rod 133, the fixed rod B132 is inserted into the end of the secondary transmission rod 133, and a pressure sensor 134 is arranged at the end of the secondary transmission rod 133 , the secondary transmission rod 133 is connected to the hydraulic cylinder telescopic rod 41, the secondary transmission rod 133 is provided with a secondary transmission housing 123 on the outer ring, one end of the secondary transmission housing 123 is provided with a primary transmission housing 122, and the other end of the primary transmission housing 122 is provided with a terminal housing 121. The above structure can achieve the purpose of driving the hydraulic cylinder telescopic rod 41 of the hydraulic cylinder 4 to be tested by the driving motor 112, and the force of the hydraulic cylinder telescopic rod 41 will also be detected by the pressure sensor 134. A control panel 124 is installed on the outside of the terminal housing 121, and valve assemblies 46 are installed at the hydraulic oil inlet A43 and the hydraulic oil inlet B44 of the hydraulic cylinder body 42 (the structure of the hydraulic cylinder is the prior art, such as Figure 1 As shown); the signal processing system includes a platform movement module and a performance detection module. The platform movement module is electrically connected to the control panel 124, the motor drive platform 2 and the hydraulic cylinder support platform 3 respectively. Through the above structure, it can be achieved that the control panel 124 is used to adjust the horizontal distance and vertical height of the hydraulic cylinder support platform 3 and the motor drive platform 2, and the performance detection module is electrically connected to the pressure sensor 134 and the control panel 124 respectively, and the control panel 124 is used to detect and display the results.

[0020] See also Figure 2 and Figure 4-Figure 6The motor drive mechanism 1 is fixed on the motor drive platform 2. The motor drive platform 2 includes two motor support columns 21. The lower ends of the two motor support columns 21 are each provided with an adjusting gear A26. The middle part of the adjusting gear A26 is threadedly connected to the motor support column 21 through a stud. A support plate 23 is provided below the motor support column 21. The motor support column 21 is movably plugged into the support column movable hole 22 on the support plate 23. A vertical adjustment motor A29 is fixed to the bottom of the support plate 23. A driving rod A27 is connected to the output end of the vertical adjustment motor A29. Two driving gears A28 are installed on the driving rod A27. The two driving gears A28 are both engaged with the adjusting gear A26. The platform moving module is connected to the vertical adjustment motor A2 9 is electrically connected. Through the above structure, the platform moving module can control the on and off of the power supply of the vertical adjustment motor A29. When the vertical adjustment motor A29 is powered on and rotated, the driving rod A27 and the driving gear A28 also rotate accordingly. Because the driving gear A28 is engaged with the adjusting gear A26, the adjusting gear A26 rotates, and the thread of the adjusting gear A26 is screwed out or screwed in from the motor support column 21 as it rotates, thereby realizing the up and down movement of the motor drive mechanism 1; the hydraulic cylinder support platform 3 includes four hydraulic cylinder support columns 32 and a hydraulic cylinder support plate 31. The four hydraulic cylinder support columns 32 are all installed at the bottom of the hydraulic cylinder support plate 31. The bottom of the hydraulic cylinder support plate 31 is equipped with a vertical adjustment motor B326. The output end of the machine B326 is connected to a driving rod B327, on which two driving gears B325 are arranged, and an adjusting gear B328 is meshed at the bottom of the driving gear B325. The platform moving module is electrically connected to the vertical adjustment motor B326. Through the above structure, the platform moving module can control the on and off of the power supply of the vertical adjustment motor B326. When the vertical adjustment motor B326 is powered on and rotated, the driving rod B327 and the driving gear B325 also rotate accordingly. Because the driving gear B325 is meshed with the adjusting gear B328, the adjusting gear B328 rotates, and the thread of the adjusting gear B328 is screwed out or screwed in from the support column 322 in the hydraulic cylinder as it rotates, which realizes the hydraulic cylinder support plate 3 1 can be moved up and down. Since the hydraulic cylinder body 42 of the hydraulic cylinder 4 is provided with a mounting foot, the hydraulic cylinder 4 is fixed as a whole on the hydraulic cylinder support plate 31 through the mounting foot, so that the hydraulic cylinder 4 can be moved up and down; the hydraulic cylinder support column 32 includes a hydraulic cylinder outer support column 321 and a hydraulic cylinder inner support column 322 arranged inside the hydraulic cylinder outer support column 321, a moving motor B323 is arranged at the bottom of the hydraulic cylinder inner support column 322, a moving gear B324 is installed at the output end of the moving motor B323, an adjusting gear B328 is arranged at the top of the hydraulic cylinder inner support column 322, and the middle part of the adjusting gear B328 is threadedly connected with the hydraulic cylinder inner support column 322 through a stud, and the platform moving module is electrically connected with the moving motor B323;A moving motor A24 is provided on the support plate 23, and a moving gear A25 is provided under each moving motor A24. The moving gear A25 and the moving gear B324 are both meshed with the rack on the sliding track 5. The platform moving module is electrically connected to the moving motor A24. Through the above structure, it can be realized that the platform moving module is used to control the power on and off of the moving motor A24 and the moving motor B323. When the moving motor A24 and the moving motor B323 are powered on and rotated, they respectively drive the moving gear A25 and the moving gear B324 to rotate. Since the moving gear A25 and the moving gear B324 are both meshed with the rack on the sliding track 5, the rotation force will be converted into a force to drive the motor driving platform 2 and the hydraulic cylinder supporting platform 3 to move, thereby adjusting the horizontal distance between the hydraulic cylinder supporting platform 3 and the motor driving platform 2. ;

[0021] In summary, the implementation method does not require additional injection of gas into the hydraulic cylinder 4. Before the test, the hydraulic cylinder support platform 3 and the motor drive platform 2 will be adjusted to a reasonable position through the control panel 124 to facilitate the installation of the hydraulic cylinder 4. The hydraulic oil inlet A43 and the hydraulic oil inlet B44 will be installed with a valve assembly 46. The valve assembly 46 can detect the air pressure inside the hydraulic cylinder body 42, and the secondary transmission rod 133 is connected to the hydraulic cylinder telescopic rod 41. When the test starts, the driving motor 112 will first drive the hydraulic cylinder telescopic rod 41 to a certain position and then lock it. Since the hydraulic cylinder telescopic rod 41 is connected to a piston, the piston is driven Driven by the motor 112, the air on both sides of the piston is compressed on one side and pulled up on the other side. At this time, the air pressure inside the hydraulic cylinder body 42 will change, and this change will generate force on the hydraulic cylinder telescopic rod 41. In this way, the air pressure value detected by the valve assembly 46 and the pressure value of the pressure sensor 134 are monitored over a period of time to see whether they change, so as to judge whether the air tightness of the hydraulic cylinder 4 is qualified, and the test results are displayed on the control panel 124. In this way, the air pressure detection method is used to detect the air tightness of the hydraulic cylinder 4, and the pressure monitoring method is also used for verification, thereby improving the accuracy of the device.

[0022] The second implementation method: See also Figure 7 and Figure 8Different from the first embodiment, the valve assembly 46 includes a valve housing 461, a valve plugging body 462 is arranged inside the valve housing 461, an elastic member 463 is arranged inside the valve plugging body 462, an air pressure detection device 464 is fixed to the lower end of the elastic member 463, the outer ring of the air pressure detection device 464 is surrounded by a plurality of detection device fixing members 465, the end of the detection device fixing member 465 away from the air pressure detection device 464 is fixed to the inner wall of the valve housing 461, and the performance detection module is electrically connected to the air pressure detection device 464. Through the above structure, when gas is used to inflate the hydraulic cylinder 4, the airflow pushes the valve plugging body 462, thereby compressing the elastic member 463 to allow gas to enter. When the air pressure in the hydraulic cylinder 4 is relatively high, the gas in the cylinder pushes the valve plugging body 462 to get stuck on the valve housing 461, so that the gas will not leak.

[0023] In summary, the implementation method requires additional injection of gas into the hydraulic cylinder 4. During the inspection, the hydraulic cylinder support platform 3 and the motor drive platform 2 are first adjusted to a reasonable position through the control panel 124 to facilitate the installation of the hydraulic cylinder 4. The hydraulic oil inlet A43 and the hydraulic oil inlet B44 will be installed with a valve assembly 46, and the secondary transmission rod 133 is connected to the hydraulic cylinder telescopic rod 41; after the inspection starts, the driving motor 112 is directly locked, and the hydraulic cylinder 4 is inflated through the valve assembly 46. When injecting gas, different amounts of gas are injected into both sides of the piston, so that the air pressure on both sides of the hydraulic cylinder body 42 is different, which will generate force on the hydraulic cylinder telescopic rod 41, and then the values ​​of the air pressure detection device 464 and the pressure sensor 134 are monitored for a period of time to see if they change, so as to determine whether the air tightness of the hydraulic cylinder 4 is qualified, and the test results are displayed on the control panel 124. The above method realizes the use of the air pressure detection method to detect the air tightness of the hydraulic cylinder 4, and the difference from the first method is that this method can make the air pressure reach the corresponding working state condition of the hydraulic cylinder 4 by inflation to detect whether the mechanical strength of the hydraulic cylinder 4 is qualified.

[0024] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A hydraulic cylinder loading test device, characterized in that: It includes: A motor drive mechanism (1) and a signal processing system; The motor drive mechanism (1) comprises a drive motor housing (111), a drive motor (112) mounted inside the drive motor housing (111), and a rotating disk (113) mounted at the output end of the drive motor (112); a fixed rod A (114) is provided on one side of the rotating disk (113); the fixed rod A (114) is rotatably connected to a primary transmission rod (131); the primary transmission rod (131) is hingedly connected to a secondary transmission rod (133); and the end of the secondary transmission rod (133) is provided with a A pressure sensor (134), the outer ring of the secondary transmission rod (133) is provided with a secondary transmission housing (123), one end of the secondary transmission housing (123) is provided with a primary transmission housing (122), the other end of the primary transmission housing (122) is provided with a terminal housing (121), a control panel (124) is installed on the outside of the terminal housing (121), and valve assemblies (46) are installed at the hydraulic oil inlet A (43) and the hydraulic oil inlet B (44) of the hydraulic cylinder body (42); The signal processing system comprises a platform movement module and a performance detection module, the platform movement module being electrically connected to the control panel (124), the motor drive platform (2) and the hydraulic cylinder support platform (3) respectively, and the performance detection module being electrically connected to the pressure sensor (134) and the control panel (124) respectively.

2. A hydraulic cylinder loading test device according to claim 1, characterized in that: The motor drive mechanism (1) is fixed on the motor drive platform (2), and the motor drive platform (2) comprises two motor support columns (21). The lower ends of the two motor support columns (21) are each provided with an adjustment gear A (26), and the middle portion of the adjustment gear A (26) is threadedly connected to the motor support column (21) via a stud. A support plate (23) is provided below the motor support column (21), and the motor support column (21) is movably plugged into a support column movable hole (22) on the support plate (23).

3. A hydraulic cylinder loading test device according to claim 2, characterized in that: A vertical adjustment motor A (29) is fixed to the bottom of the support plate (23); an output end of the vertical adjustment motor A (29) is connected to a driving rod A (27); two driving gears A (28) are mounted on the driving rod A (27); both driving gears A (28) are meshed with the adjustment gear A (26); and the platform moving module is electrically connected to the vertical adjustment motor A (29).

4. The hydraulic cylinder loading test device according to claim 1, characterized in that: The hydraulic cylinder support platform (3) comprises four hydraulic cylinder support columns (32) and a hydraulic cylinder support plate (31), wherein the four hydraulic cylinder support columns (32) are all mounted on the bottom of the hydraulic cylinder support plate (31), and a vertical adjustment motor B (326) is mounted on the bottom of the hydraulic cylinder support plate (31), wherein the output end of the vertical adjustment motor B (326) is connected to a driving rod B (327), wherein two driving gears B (325) are arranged on the driving rod B (327), wherein the bottom end of the driving gear B (325) is meshed with an adjustment gear B (328), wherein the middle part of the adjustment gear B (328) is threadedly connected to the support column (322) in the hydraulic cylinder via a stud, and the platform moving module is electrically connected to the vertical adjustment motor B (326).

5. A hydraulic cylinder loading test device according to claim 4, characterized in that: The hydraulic cylinder support column (32) comprises a hydraulic cylinder outer support column (321) and a hydraulic cylinder inner support column (322) arranged inside the hydraulic cylinder outer support column (321); a moving motor B (323) is arranged at the bottom of the hydraulic cylinder inner support column (322); a moving gear B (324) is installed at the output end of the moving motor B (323); an adjusting gear B (328) is arranged at the top of the hydraulic cylinder inner support column (322); and the platform moving module is electrically connected to the moving motor B (323).

6. The hydraulic cylinder loading test device according to claim 2, characterized in that: A moving motor A (24) is provided on the support plate (23), and a moving gear A (25) is provided below each of the moving motors A (24). The moving gear A (25) and the moving gear B (324) are both meshed with the rack on the sliding track (5), and the platform moving module is electrically connected to the moving motor A (24).

7. The hydraulic cylinder loading test device according to claim 1, characterized in that: The valve assembly (46) comprises a valve housing (461), a valve blocking body (462) is arranged inside the valve housing (461), an elastic member (463) is arranged inside the valve blocking body (462), an air pressure detection device (464) is fixed to the lower end of the elastic member (463), a plurality of detection device fixing members (465) surround the outer ring of the air pressure detection device (464), an end of the detection device fixing member (465) away from the air pressure detection device (464) is fixed to the inner wall of the valve housing (461), and the performance detection module is electrically connected to the air pressure detection device (464).

8. The hydraulic cylinder loading test device according to claim 1, characterized in that: A fixing rod B (132) is laterally inserted into one end of the primary transmission rod (131) close to the secondary transmission rod (133), and the fixing rod B (132) is inserted into the end of the secondary transmission rod (133).

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