Oil pressure damper leakage test device and method

Abstract

The present application relates to the technical field of railway detection equipment, and discloses an oil pressure shock absorber leakage test device and method, the oil pressure shock absorber leakage test device comprises a fixing base, a rotary variable amplitude mechanism, a turnover mechanism and two angle changing mechanisms, a support plate is rotationally arranged on the fixing base, and a first telescopic driving source is used to drive the support plate to turn over.A turnover plate is rotationally arranged on the support plate, and a driving assembly is used to drive the turnover plate to turn over, so that the posture state of the shock absorber under actual working conditions can be simulated through the telescopic action of the first telescopic driving source and the action of the driving assembly.The turnover seat is rotationally arranged on the mounting seat, and a second telescopic driving source is used to drive the turnover seat to turn over to change the joint angle of the shock absorber.The two ends of a third telescopic driving source are connected to the turnover plate and the mounting seat respectively, and are used to simulate the stress working condition of the shock absorber and test the sealing performance of the shock absorber.The shock absorber can be adjusted at multiple angles in the rotary, pitching and turnover modes, and the actual loading space posture state can be restored.

Description

Technical Field

[0001] This invention relates to the field of railway testing equipment technology, and in particular to a hydraulic damper leakage test device and method. Background Technology

[0002] As a key component of the bogie, the hydraulic vibration damper of a locomotive or rolling stock absorbs and buffers various impacts and vibrations, improving the smoothness and comfort of locomotive and rolling stock operation. Its role becomes even more crucial as train speeds increase. Currently, the vibration dampers used in the Harmony series locomotives and CRH series EMUs on the railway require careful attention to ensure their reliability during locomotive operation. Their leakage performance directly affects the safety and reliability of the entire locomotive, especially before new locomotive installation and during locomotive maintenance.

[0003] Currently, most conventional leakage testing equipment uses a fixed mounting frame to rigidly lock both ends of the shock absorber to the test base. A periodic pressure load is applied to the inside of the shock absorber cylinder via an external hydraulic station, and leakage is observed on its outer surface while it is stationary. However, the shock absorber in the vehicle suspension system is subject to complex spatial orientation changes due to frame swaying, wheel movement, and steering. The cylinder and piston rod do not always maintain coaxial motion, but rather experience multi-degree-of-freedom angular displacements such as rotation, pitch, and roll. Simultaneously, the shock absorber's joint bearings are subjected to alternating torsional composite loads. Existing fixed testing equipment cannot simulate the spatial orientation and composite stress characteristics under these actual vehicle operating conditions, resulting in poor reliability of test results compared to real-world vehicle performance. Summary of the Invention

[0004] According to one aspect of the present invention, a hydraulic damper leakage test apparatus is provided to solve the above-mentioned problems existing in damper leakage test apparatuses in the related art.

[0005] To address the aforementioned problems in the existing technology, the present invention adopts the following technical solution:

[0006] A hydraulic damper leakage test apparatus includes:

[0007] Fixed base;

[0008] A slewing mechanism includes a first telescopic drive source and a support plate. The support plate is rotatably mounted on the fixed base. The first telescopic drive source is mounted on the fixed base and is used to drive the support plate to rotate relative to the fixed base to adjust the slewing angle of the support plate.

[0009] A flipping mechanism includes a drive assembly and a flipping plate, the flipping plate being rotatably mounted on the support plate, the drive assembly being mounted on the support plate, and the drive assembly being used to drive the flipping plate to flip relative to the support plate.

[0010] Two angle-changing mechanisms are spaced apart from the flip plate. Each angle-changing mechanism includes a mounting base, a second telescopic drive source, and a flip base. The mounting base is disposed on the flip plate, and the flip base is rotatably disposed on the mounting base and used to fix the joint of the shock absorber. The second telescopic drive source is disposed on the mounting base and is used to drive the flip base to flip relative to the mounting base to change the joint angle of the shock absorber.

[0011] The third telescopic drive source has its two ends connected to the flip plate and the mounting base, respectively, and is used to simulate the stress conditions of the shock absorber.

[0012] As an optional technical solution, the drive assembly includes a fourth telescopic drive source, a fixed rod, a first connecting rod, and a second connecting rod. One end of the first connecting rod and one end of the second connecting rod are rotatably connected, the other end of the first connecting rod is rotatably connected to the support plate, and the other end of the second connecting rod is rotatably connected to the flipping plate. The fixed rod is connected to the hinge point of the first connecting rod and the second connecting rod. The fourth telescopic drive source is disposed on the support plate and connected to the fixed rod. The fourth telescopic drive source can drive the flipping plate to flip relative to the support plate to simulate the positional state of the shock absorber.

[0013] As an optional technical solution, the telescopic rod of the fourth telescopic drive source is arranged parallel to the first connecting rod, the fixed rod is arranged perpendicular to the telescopic rod of the fourth telescopic drive source and the first connecting rod, and the first connecting rod and the second connecting rod are stacked and arranged parallel to each other.

[0014] As an optional technical solution, a guide rail is also included. The guide rail is disposed on the flip plate, and the mounting base is slidably connected to the guide rail. Under the action of the third telescopic drive source, the angle-changing mechanism can drive the shock absorber to telescopically move relative to the guide rail.

[0015] As an optional technical solution, an adjustment component is also included. The adjustment component includes an adjustment plate and a connecting pin. The adjustment plate is disposed on the flip plate and has an adjustment hole. The mounting base has a mounting hole and the connecting pin passes through the adjustment hole and is connected to the mounting hole.

[0016] As an optional technical solution, there are multiple adjustment holes, and the multiple adjustment holes are spaced apart along the extension and retraction direction of the third extension and retraction drive source.

[0017] As an optional technical solution, the slewing mechanism further includes a first hinge seat and a second hinge seat. The first hinge seat is fixedly connected to the fixed seat and is hinged to the first telescopic drive source. The second hinge seat is fixedly connected to the support plate and is hinged to the first telescopic drive source.

[0018] As an optional technical solution, the slewing mechanism further includes a rotating rod and a third hinge seat. The third hinge seat is fixedly connected to the fixed base. One end of the rotating rod is hinged to the third hinge seat, and the other end of the rotating rod is fixedly connected to the support plate.

[0019] As an optional technical solution, the flipping mechanism further includes a fourth hinge seat, which is fixedly connected to the support plate, and the fourth hinge seat and the drive assembly are hinged together.

[0020] According to another aspect of the present invention, a method for testing the leakage of a hydraulic damper is provided. Implemented using the aforementioned hydraulic damper leakage testing apparatus, the method includes:

[0021] S100: The shock absorber is mounted on the tilting seat of the two angle-changing mechanisms;

[0022] S200: By adjusting the second telescopic drive source, the torsional angle of the shock absorber is changed, simulating the force state of the joint of the shock absorber;

[0023] S300: Based on the type of the shock absorber, the spatial orientation of the shock absorber is simulated by adjusting the first telescopic drive source and the drive assembly;

[0024] S400: By adjusting the third telescopic drive source, the stress condition of the shock absorber is simulated.

[0025] The hydraulic damper leakage testing apparatus and method provided by this invention have at least the following beneficial effects:

[0026] The hydraulic vibration damper leakage test device includes a fixed base, a slewing mechanism, a tilting mechanism, and two angle-changing mechanisms. The slewing mechanism includes a first telescopic drive source and a support plate. The support plate is rotatably mounted on the fixed base, and the first telescopic drive source is also mounted on the fixed base. The first telescopic drive source drives the support plate to tilt relative to the fixed base to adjust the slewing angle of the support plate. The tilting mechanism includes a drive assembly and a tilting plate. The tilting plate is rotatably mounted on the support plate, and the drive assembly is also mounted on the support plate. The drive assembly drives the tilting plate to tilt relative to the support plate. Through the extension and retraction of the first telescopic drive source and the driving action of the drive assembly, the positional state of the vibration damper under actual working conditions can be simulated. The two angle-changing mechanisms are spaced apart relative to the tilting plate. Each angle-changing mechanism includes a mounting base, a second telescopic drive source, and a tilting base. The mounting base is mounted on the tilting plate and rotatably mounted on the mounting base to fix the joint of the vibration damper. The second telescopic drive source is also mounted on the mounting base and drives the tilting base to tilt relative to the mounting base to change the joint angle of the vibration damper, simulating the torsional combined stress state of the vibration damper joint under actual working conditions. The two ends of the third telescopic drive source are connected to the flip plate and the mounting base respectively, and are used to simulate the stress conditions of the shock absorber, thereby testing the sealing performance of the shock absorber. The hydraulic shock absorber leakage test device can realize multi-angle adjustment of the shock absorber's rotation, pitch, and flip, highly replicating the actual installation space posture.

[0027] This hydraulic shock absorber leakage test method, implemented through a hydraulic shock absorber leakage test device, involves mounting the shock absorber on a tilting seat of two variable-angle mechanisms; adjusting the second telescopic drive source to change the torsional angle of the shock absorber, simulating the stress state of the shock absorber's joints; based on the type of shock absorber, adjusting the first telescopic drive source and drive components to simulate the spatial orientation of the shock absorber; and adjusting the third telescopic drive source to simulate the stress conditions of the shock absorber. This method allows for multi-angle adjustment of the shock absorber's rotation, pitch, and tilt, highly replicating the actual spatial orientation of the shock absorber on a vehicle, and enabling leakage tests. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the hydraulic damper leakage test device (without damper and angle adjustment mechanism) in Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the hydraulic damper leakage test device in Embodiment 1 of the present invention;

[0030] Figure 3 This is a schematic diagram of the variable angle mechanism in Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the variable angle mechanism and vibration damper in Embodiment 1 of the present invention;

[0032] Figure 5This is a schematic diagram of the first working state of the hydraulic damper leakage test device in Embodiment 1 of the present invention;

[0033] Figure 6 This is a schematic diagram of the second working state of the hydraulic damper leakage test device in Embodiment 1 of the present invention;

[0034] Figure 7 This is a schematic diagram of the third working state of the hydraulic damper leakage test device in Embodiment 1 of the present invention;

[0035] Figure 8 This is a flowchart of the oil pressure vibration damper leakage test method in Embodiment 2 of the present invention.

[0036] In the picture:

[0037] 100. Vibration damper; 1. Fixed seat; 2. First telescopic drive source; 3. Support plate; 4. Flip plate; 5. Mounting seat; 6. Second telescopic drive source; 7. Flip seat; 8. Third telescopic drive source; 9. Fourth telescopic drive source; 10. Fixed rod; 11. First connecting rod; 12. Second connecting rod; 13. Guide rail; 14. Adjusting plate; 15. Connecting pin; 16. First hinge seat; 17. Second hinge seat; 18. Rotating rod; 19. Third hinge seat; 20. Fourth hinge seat. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] Example 1

[0043] like Figures 1 to 7 As shown, this embodiment provides a hydraulic damper leakage test device, which includes a fixed base 1, a slewing mechanism, a tilting mechanism, and two angle-changing mechanisms. The slewing mechanism includes a first telescopic drive source 2 and a support plate 3. The support plate 3 is rotatably mounted on the fixed base 1, and the first telescopic drive source 2 is mounted on the fixed base 1. The first telescopic drive source 2 is used to drive the support plate 3 to tilt relative to the fixed base 1 to adjust the slewing angle of the support plate 3. The tilting mechanism includes a drive assembly and a tilting plate 4. The tilting plate 4 is rotatably mounted on the support plate 3, and the drive assembly is mounted on the support plate 3. The drive assembly is used to drive the tilting plate 4 to tilt relative to the support plate 3. Two angle-changing mechanisms are spaced apart from the flip plate 4. Each angle-changing mechanism includes a mounting base 5, a second telescopic drive source 6, and a flipping base 7. The mounting base 5 is mounted on the flip plate 4, and the flipping base 7 is rotatably mounted on the mounting base 5 and used to fix the joint of the shock absorber 100. The second telescopic drive source 6 is mounted on the mounting base 5 and is used to drive the flipping base 7 to flip relative to the mounting base 5 to change the joint angle of the shock absorber 100. The two ends of the third telescopic drive source 8 are respectively connected to the flip plate 4 and the mounting base 5, and are used to simulate the stress conditions of the shock absorber 100.

[0044] The fixed base 1 is fixed to the ground with anchor bolts, providing support for the entire test device. The first telescopic drive source 2 is a variable amplitude hydraulic cylinder. The support plate 3 is located above the fixed base 1. The fixed end of the first telescopic drive source 2 is hinged to the fixed base 1, and the telescopic end of the first telescopic drive source 2 is hinged to the bottom of the support plate 3. Under the action of the first telescopic drive source 2, the support plate 3 can pitch and rotate relative to the fixed base 1. That is, when the telescopic end of the first telescopic drive source 2 extends, the support plate 3 is raised and rotated relative to the fixed base 1; when the telescopic end of the first telescopic drive source 2 retracts, the support plate 3 returns to its initial position. The rotation angle of the support plate 3 can be adjusted by the extension and retraction of the first telescopic drive source 2.

[0045] The tilting plate 4 is located above the support plate 3, and one side of the tilting plate 4 is hinged to the same side of the support plate 3. The drive assembly is composed of a tilting cylinder and a multi-link mechanism. The fixed end of the drive assembly is installed on the support plate 3, and the output end of the drive assembly is connected to the tilting plate 4. Under the driving action of the drive assembly, the tilting plate 4 can tilt left and right relative to the support plate 3. Through the extension and retraction of the first telescopic drive source 2 and the driving action of the drive assembly, the positional state of the shock absorber 100 under actual working conditions can be simulated.

[0046] Two variable angle mechanisms are spaced apart along the length of the flip plate 4. The mounting base 5 is mounted on the flip plate 4, and the flip seat 7 is rotatably connected to the mounting base 5 via a rotating shaft. The joint of the shock absorber 100 is fixed on the flip seat 7; that is, the two variable angle mechanisms respectively fix the two ends of the joint of the shock absorber 100. The second telescopic drive source 6 is configured as a loading cylinder. The fixed end of the second telescopic drive source 6 is mounted on the mounting base 5, and the output end of the second telescopic drive source 6 is connected to the flip seat 7. Under the action of the second telescopic drive source 6, the flip seat 7 can flip relative to the mounting base 5, thereby changing the angle of the joint of the shock absorber 100, which can simulate the torsional combined force state of the shock absorber 100 joint under actual working conditions.

[0047] The third telescopic drive source 8 is configured as a drive cylinder. One end of the third telescopic drive source 8 is hinged to the angle-changing mechanism, and the other end is hinged to the tilting mechanism. By starting and stopping the loading of the third telescopic drive source 8, the stress condition of the shock absorber 100 is simulated, thereby testing the sealing performance of the shock absorber 100.

[0048] The shock absorber 100 is installed on the hydraulic shock absorber leakage test device. The second telescopic drive source 6 is adjusted to change the torsional angle of the shock absorber 100, simulating the stress state of the joints of the shock absorber 100. Then, depending on the type of shock absorber 100, the spatial orientation of the shock absorber 100 is simulated by adjusting the first telescopic drive source 2 and the drive assembly. Finally, the stress conditions of the shock absorber 100 are simulated by adjusting the third telescopic drive source 8. The hydraulic shock absorber leakage test device can achieve multi-angle adjustment of the shock absorber 100 in rotation, pitch, and tilt, highly replicating the actual spatial orientation of the shock absorber 100 on the vehicle, and conducting leakage tests on the shock absorber 100.

[0049] Preferably, the damper 100 installed in the hydraulic damper leakage test device also includes an electronic control system and a hydraulic pump station. The hydraulic pump station provides stable hydraulic power to all cylinders of the device to achieve smooth extension and contraction and load loading. The electronic control system and the displacement sensors built into each cylinder form a closed-loop automatic control system, which can pre-store the operating parameters of different locomotive dampers 100 and automatically complete the adjustment of the joint torsion angle of the damper 100, the overall amplitude and posture adjustment of the damper 100, and the start and stop loading of the cylinders with one click, realizing the full automation control of the test.

[0050] Furthermore, referring to Figures 1-7 The drive assembly includes a fourth telescopic drive source 9, a fixed rod 10, a first connecting rod 11, and a second connecting rod 12. One end of the first connecting rod 11 and one end of the second connecting rod 12 are rotatably connected. The other end of the first connecting rod 11 is rotatably connected to the support plate 3, and the other end of the second connecting rod 12 is rotatably connected to the flip plate 4. The fixed rod 10 is connected to the hinge point of the first connecting rod 11 and the second connecting rod 12. The fourth telescopic drive source 9 is disposed on the support plate 3 and is connected to the fixed rod 10. The fourth telescopic drive source 9 can drive the flip plate 4 to flip relative to the support plate 3 to simulate the position and posture of the shock absorber 100.

[0051] The first end of the first link 11 and the first end of the second link 12 are hinged to each other. The second ends of the first link 11 and the second ends of the second link 12 are respectively hinged to the support plate 3 and the flipping plate 4. The telescopic rod of the fourth telescopic drive source 9 is arranged parallel to the first link 11, and the fixed rod 10 is arranged perpendicular to the telescopic rod of the fourth telescopic drive source 9 and the first link 11. The first link 11 and the second link 12 are stacked and arranged parallel to each other. The fourth telescopic drive source 9 is configured as a flipping cylinder. The fixed end of the fourth telescopic drive source 9 is hinged to the support plate 3, and its telescopic end is connected to the hinge point of the first link 11 and the second link 12 through the fixed rod 10. The first link 11, the second link 12, the support plate 3, and the flipping plate 4 together form a linkage mechanism. Under the action of the fourth telescopic drive source 9, its telescopic end shortens, driving the fixed rod 10 to move towards the fixed end. The first link 11 and the second link 12 rotate relative to each other and unfold to the upper and lower sides, so that the flipping plate 4 can flip relative to the support plate 3 to simulate the position state of the shock absorber 100. Similarly, when the telescopic end of the fourth telescopic drive source 9 extends, it drives the fixed rod 10 to move in the opposite direction, and the first connecting rod 11 and the second connecting rod 12 rotate relative to each other and retract, so that the flip plate 4 returns to its initial position.

[0052] Furthermore, referring to Figures 1-7 The hydraulic damper leakage test device also includes a guide rail 13, which is set on the flip plate 4. The mounting base 5 is slidably connected to the guide rail 13. Under the action of the third telescopic drive source 8, the angle-changing mechanism can drive the damper 100 to telescopically move relative to the guide rail 13.

[0053] There are two guide rails 13, which are fixedly mounted on the flip plate 4 by several bolts. The mounting base 5 has protrusions on both sides, each with a sliding hole. The mounting base 5 slides with the two guide rails 13 through these sliding holes. Driven by the third telescopic drive source 8, the angle-changing mechanism slides along the length of the guide rails 13, thereby causing the shock absorber 100 to telescopically move relative to the flip plate 4, simulating the stress conditions of the shock absorber 100, and thus testing the sealing performance of the shock absorber 100.

[0054] Furthermore, referring to Figures 1-7 The hydraulic damper leakage test device also includes an adjustment assembly, which includes an adjustment plate 14 and a connecting pin 15. The adjustment plate 14 is set on the flip plate 4 and has an adjustment hole. The mounting base 5 has a mounting hole and the connecting pin 15 passes through the adjustment hole and is connected to the mounting hole.

[0055] There are two adjusting plates 14, which are fixedly mounted on the flip plate 4 with several bolts. Each adjusting plate 14 has an adjusting hole, and a connecting pin 15 passes through the adjusting hole and connects to the mounting hole of the mounting base 5. It should be noted that one of the two angle-changing mechanisms is connected to the telescopic end of the third telescopic drive source 8, while the other angle-changing mechanism is mounted on the corresponding adjusting hole of the adjusting plate 14 via the connecting pin 15. Driven by the third telescopic drive source 8, the shock absorber 100 is moved telescopically relative to the flip plate 4, simulating the stress conditions of the shock absorber 100.

[0056] Furthermore, referring to Figures 1-7 There are multiple adjustment holes, which are spaced apart along the extension and retraction direction of the third extension and retraction drive source 8. Vibration dampers 100 of different lengths are installed in the corresponding adjustment holes of the adjustment plate 14 through connecting pins 15, which can accommodate various models of vibration dampers 100 with different lengths and installation sizes, and has strong versatility and wide applicability.

[0057] Furthermore, referring to Figures 1-7 The slewing mechanism also includes a first hinge seat 16 and a second hinge seat 17. The first hinge seat 16 is fixedly connected to the fixed seat 1 and is hinged to the first telescopic drive source 2. The second hinge seat 17 is fixedly connected to the support plate 3 and is hinged to the first telescopic drive source 2.

[0058] The first hinge seat 16 is fixedly installed to the fixed base 1 by welding or other means. The second hinge seat 17 is fixedly installed to the support plate 3 by welding or other means. The fixed end of the first telescopic drive source 2 is hinged to the first hinge seat 16 by a pin, and the telescopic end of the first telescopic drive source 2 is hinged to the second hinge seat 17 by a pin. When the telescopic end of the first telescopic drive source 2 extends or retracts, the support plate 3 can tilt and rotate relative to the fixed base 1. During the rotation process, the fixed end of the first telescopic drive source 2 rotates relative to the fixed base 1 through the first hinge seat 16, and the telescopic end of the first telescopic drive source 2 rotates relative to the support plate 3 through the second hinge seat 17. The movement is flexible, and the rotation angle of the support plate 3 can be adjusted.

[0059] Furthermore, referring to Figures 1-7 The slewing mechanism also includes a rotating rod 18 and a third hinge seat 19. The third hinge seat 19 is fixedly connected to the fixed base 1. One end of the rotating rod 18 is hinged to the third hinge seat 19, and the other end of the rotating rod 18 is fixedly connected to the support plate 3.

[0060] The third hinge seat 19 is fixedly installed on the support leg of the fixed seat 1 by several bolts. One end of the rotating rod 18 is hinged to the third hinge seat 19 by a pin, and the other end of the rotating rod 18 is fixedly connected to the bottom of the support plate 3 by welding or other means. Under the action of the first telescopic drive source 2, the support plate 3 can tilt and rotate relative to the fixed seat 1 through the third hinge seat 19 and the rotating rod 18, and the rotation angle of the support plate 3 can be adjusted.

[0061] Furthermore, referring to Figures 1-7 The flipping mechanism also includes a fourth hinge seat 20, which is fixedly connected to the support plate 3, and the fourth hinge seat 20 and the drive assembly are hinged together.

[0062] The fourth hinge seat 20 is fixedly installed on the support plate 3 by several bolts. The fourth telescopic drive source 9 of the drive assembly is hinged to the fourth hinge seat 20 by a pin. The fourth telescopic drive source 9 can drive the flip plate 4 to flip relative to the support plate 3. At the same time, the fourth telescopic drive source 9 can move relative to the support plate 3 under the action of the fourth hinge seat 20, and its movement is flexible.

[0063] Example 2

[0064] This embodiment provides a method for testing leakage in a hydraulic shock absorber, such as... Figure 8 As shown, through the implementation of the above-mentioned hydraulic damper leakage test device, the hydraulic damper leakage test method includes:

[0065] S100: The shock absorber 100 is mounted on the tilting seat 7 of the two angle-changing mechanisms.

[0066] Two angle-changing mechanisms are spaced apart along the length of the flip plate 4. The mounting base 5 is mounted on the flip plate 4, and the flip base 7 is rotatably connected to the mounting base 5 via a rotating shaft. The joint of the shock absorber 100 is fixed on the flip base 7, that is, the two angle-changing mechanisms fix the two ends of the joint of the shock absorber 100 respectively.

[0067] S200: By adjusting the second telescopic drive source 6, the torsional angle of the damper 100 is changed, simulating the force state of the joint of the damper 100.

[0068] The fixed end of the second telescopic drive source 6 is mounted on the mounting base 5, and the output end of the second telescopic drive source 6 is connected to the flip base 7. Under the action of the second telescopic drive source 6, the flip base 7 can flip relative to the mounting base 5, thereby changing the angle of the joint of the shock absorber 100, which can simulate the torsional composite force state of the joint of the shock absorber 100 under actual working conditions.

[0069] S300: Based on the type of the damper 100, the spatial orientation of the damper 100 is simulated by adjusting the first telescopic drive source 2 and the drive assembly.

[0070] The fixed base 1 is fixed to the ground with anchor bolts, providing support for the entire test device. The first telescopic drive source 2 is a variable amplitude hydraulic cylinder. The support plate 3 is located above the fixed base 1. The fixed end of the first telescopic drive source 2 is hinged to the fixed base 1, and the telescopic end of the first telescopic drive source 2 is hinged to the bottom of the support plate 3. Under the action of the first telescopic drive source 2, the support plate 3 can pitch and rotate relative to the fixed base 1. That is, when the telescopic end of the first telescopic drive source 2 extends, the support plate 3 is raised and rotated relative to the fixed base 1; when the telescopic end of the first telescopic drive source 2 retracts, the support plate 3 returns to its initial position. The rotation angle of the support plate 3 can be adjusted by the extension and retraction of the first telescopic drive source 2.

[0071] The tilting plate 4 is located above the support plate 3, and one side of the tilting plate 4 is hinged to the same side of the support plate 3. The drive assembly is composed of a tilting cylinder and a multi-link mechanism. The fixed end of the drive assembly is installed on the support plate 3, and the output end of the drive assembly is connected to the tilting plate 4. Under the driving action of the drive assembly, the tilting plate 4 can tilt left and right relative to the support plate 3. Through the extension and retraction of the first telescopic drive source 2 and the driving action of the drive assembly, the positional state of the shock absorber 100 under actual working conditions can be simulated.

[0072] S400: By adjusting the third telescopic drive source 8, the stress conditions of the vibration damper 100 are simulated.

[0073] One end of the third telescopic drive source 8 is hinged to the angle-changing mechanism, and the other end is hinged to the flipping mechanism. By starting and stopping the loading of the third telescopic drive source 8, the stress condition of the shock absorber 100 is simulated, thereby testing the sealing performance of the shock absorber 100.

[0074] The hydraulic shock absorber leakage test method provided in this embodiment, through the implementation of the hydraulic shock absorber leakage test device, involves installing the shock absorber 100 on the tilting seat 7 of two variable angle mechanisms; by adjusting the second telescopic drive source 6, the torsional angle of the shock absorber 100 is changed to simulate the stress state of the joint of the shock absorber 100; based on the type of the shock absorber 100, the spatial orientation state of the shock absorber 100 is simulated by adjusting the first telescopic drive source 2 and the drive assembly; and by adjusting the third telescopic drive source 8, the stress condition of the shock absorber 100 is simulated. This method enables multi-angle adjustment of the shock absorber 100 in rotation, pitch, and tilt, highly replicating the actual vehicle-mounted spatial orientation state, and conducting leakage tests on the shock absorber 100.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A hydraulic vibration damper leakage test device, characterized in that, include: Fixed base (1); The slewing mechanism includes a first telescopic drive source (2) and a support plate (3). The support plate (3) is rotatably mounted on the fixed base (1). The first telescopic drive source (2) is mounted on the fixed base (1). The first telescopic drive source (2) is used to drive the support plate (3) to flip relative to the fixed base (1) to adjust the slewing angle of the support plate (3). The flipping mechanism includes a drive assembly and a flipping plate (4), the flipping plate (4) is rotatably disposed on the support plate (3), the drive assembly is disposed on the support plate (3), and the drive assembly is used to drive the flipping plate (4) to flip relative to the support plate (3); Two angle-changing mechanisms are spaced apart from the flip plate (4). The angle-changing mechanism includes a mounting base (5), a second telescopic drive source (6), and a flip base (7). The mounting base (5) is disposed on the flip plate (4). The flip base (7) is rotatably disposed on the mounting base (5) and used to fix the joint of the shock absorber (100). The second telescopic drive source (6) is disposed on the mounting base (5) and is used to drive the flip base (7) to flip relative to the mounting base (5) to change the joint angle of the shock absorber (100). The third telescopic drive source (8) is connected at both ends to the flip plate (4) and the mounting base (5) respectively, and is used to simulate the stress condition of the shock absorber (100).

2. The hydraulic damper leakage test device according to claim 1, characterized in that, The drive assembly includes a fourth telescopic drive source (9), a fixed rod (10), a first connecting rod (11), and a second connecting rod (12). One end of the first connecting rod (11) and one end of the second connecting rod (12) are rotatably connected. The other end of the first connecting rod (11) is rotatably connected to the support plate (3). The other end of the second connecting rod (12) is rotatably connected to the flip plate (4). The fixed rod (10) is connected to the hinge point of the first connecting rod (11) and the second connecting rod (12). The fourth telescopic drive source (9) is disposed on the support plate (3) and is connected to the fixed rod (10). The fourth telescopic drive source (9) can drive the flip plate (4) to flip relative to the support plate (3) to simulate the position state of the shock absorber (100).

3. The hydraulic damper leakage test device according to claim 2, characterized in that, The telescopic rod of the fourth telescopic drive source (9) is arranged parallel to the first connecting rod (11), the fixed rod (10) is arranged perpendicular to the telescopic rod of the fourth telescopic drive source (9) and the first connecting rod (11), and the first connecting rod (11) and the second connecting rod (12) are stacked and arranged parallel to each other.

4. The hydraulic damper leakage test device according to claim 1, characterized in that, It also includes a guide rail (13), which is disposed on the flip plate (4). The mounting base (5) is slidably connected to the guide rail (13). Under the action of the third telescopic drive source (8), the angle-changing mechanism can drive the shock absorber (100) to telescopically move relative to the guide rail (13).

5. The hydraulic damper leakage test device according to claim 1, characterized in that, It also includes an adjustment component, which includes an adjustment plate (14) and a connecting pin (15). The adjustment plate (14) is disposed on the flip plate (4). The adjustment plate (14) has an adjustment hole. The mounting base (5) has a mounting hole. The connecting pin (15) passes through the adjustment hole and is connected to the mounting hole.

6. The hydraulic damper leakage test apparatus according to claim 5, characterized in that, There are multiple adjustment holes, and the multiple adjustment holes are spaced apart along the extension and retraction direction of the third extension and retraction drive source (8).

7. The hydraulic damper leakage test device according to claim 1, characterized in that, The slewing mechanism further includes a first hinge seat (16) and a second hinge seat (17). The first hinge seat (16) is fixedly connected to the fixed seat (1), and the first hinge seat (16) and the first telescopic drive source (2) are hinged together. The second hinge seat (17) is fixedly connected to the support plate (3), and the second hinge seat (17) and the first telescopic drive source (2) are hinged together.

8. The hydraulic damper leakage test device according to claim 1, characterized in that, The slewing mechanism also includes a rotating rod (18) and a third hinge seat (19). The third hinge seat (19) is fixedly connected to the fixed seat (1). One end of the rotating rod (18) is hinged to the third hinge seat (19), and the other end of the rotating rod (18) is fixedly connected to the support plate (3).

9. The hydraulic damper leakage test device according to claim 1, characterized in that, The flipping mechanism further includes a fourth hinge seat (20), which is fixedly connected to the support plate (3), and the fourth hinge seat (20) and the drive assembly are hinged together.

10. A method for testing leakage in a hydraulic vibration damper, characterized in that, By implementing the hydraulic damper leakage test apparatus as described in any one of claims 1-9, the hydraulic damper leakage test method includes: S100: The shock absorber (100) is mounted on the flip seat (7) of the two angle-changing mechanisms. S200: By adjusting the second telescopic drive source (6), the torsional angle of the damper (100) is changed, simulating the force state of the joint of the damper (100); S300: Based on the type of the damper (100), the spatial orientation state of the damper (100) is simulated by adjusting the first telescopic drive source (2) and the drive assembly; S400: By adjusting the third telescopic drive source (8), the stress condition of the damper (100) is simulated.

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