Shock absorber testing device

Abstract

The embodiment of the invention provides a shock absorber testing device. The shock absorber testing device comprises a support assembly; the fixing assembly is connected with the support assembly, and the fixing assembly is used for fixing a shock absorber; the lateral loading mechanism comprises a lateral clamp and a pneumatic execution part, the lateral clamp has a clamping state for clamping the shock absorber and a releasing state for releasing the shock absorber, the output end of the pneumatic execution part is connected with the lateral clamp, and the pneumatic execution part is used for applying lateral force to the shock absorber. By adjusting the driving force of the pneumatic execution piece, the pneumatic execution piece applies different lateral forces to the shock absorber, the pneumatic control type loading mode improves the loading precision and the adjustment convenience, the problems of environmental pollution and equipment maintenance of a traditional loading mode are avoided, and meanwhile, the pneumatic control type loading mode is low in cost and high in practicability. The specific value of the lateral force can be realized by adjusting the control knob, the operation is simple and convenient, and the technical problems of high cost and complicated operation of a damper test device in the prior art are solved.

Description

Technical Field

[0001] This application relates to the field of shock absorber testing technology, and more specifically, to a shock absorber testing device. Background Technology

[0002] Currently, in testing equipment for the fatigue performance of vibration damper assemblies, lateral force loading generally employs either a gravity-based loading device or a hydraulic solenoid valve-controlled loading device. Gravity-based loading testing devices have complex frame assembly, high manual labor intensity, and require high precision in lateral force control, making adjustment inconvenient. Hydraulic solenoid valve-controlled loading testing devices are costly, and the actuating cylinders are prone to oil leakage, which not only wastes oil and causes environmental pollution but also affects equipment use and shortens its service life.

[0003] There is currently no good solution to the above problems. Summary of the Invention

[0004] This application provides a shock absorber testing device to at least solve the technical problems of high cost and complex operation of existing shock absorber testing devices.

[0005] According to one aspect of the embodiments of this application, a shock absorber testing apparatus is provided, comprising: a support assembly; a fixing assembly connected to the support assembly, the fixing assembly being used to fix the shock absorber; and a lateral loading mechanism, the lateral loading mechanism including a lateral clamp and a pneumatic actuator, the lateral clamp having a clamping state for holding the shock absorber and a releasing state for releasing the shock absorber, the output end of the pneumatic actuator being connected to the lateral clamp, the pneumatic actuator being used to apply a lateral force to the shock absorber.

[0006] Furthermore, the lateral loading mechanism is connected to the support assembly. Along the height direction of the shock absorber, the lateral loading mechanism is movably arranged relative to the support assembly to adjust the connection position between the lateral loading mechanism and the shock absorber.

[0007] Furthermore, the lateral loading mechanism also includes: a force sensor connected to the lateral clamp, the force sensor being used to detect the lateral force on the shock absorber; and an intermediate clamp connected to the output end of the pneumatic actuator, the intermediate clamp being used to hold the force sensor.

[0008] Furthermore, the fixing component includes: a hydraulic cylinder mounted on the bracket assembly; and a first connecting clamp connected to the output end of the hydraulic cylinder, the first connecting clamp being used to connect to the piston rod end of the shock absorber.

[0009] Furthermore, the first connecting fixture includes: an upper connecting plate, the first end of which is connected to the output end of the hydraulic cylinder; and a piston rod end connector, the first end of which is connected to the second end of the upper connecting plate, and the second end of which is connected to the piston rod end of the shock absorber.

[0010] Furthermore, the fixing component includes: a second connecting clamp for connecting the fixed end of the shock absorber, the second connecting clamp being movably connected to the bracket assembly to adjust the tilt angle of the shock absorber.

[0011] Furthermore, the second connecting clamp includes: a first connecting member having a first connecting portion, the first connecting member being connected to the shock absorber through the first connecting portion; and a second connecting member being connected to the first connecting member at an angle, the second connecting member having a second connecting portion, the second connecting member being connected to the bracket assembly through the second connecting portion; wherein the relative angle between the second connecting member and the bracket assembly is adjustable to adjust the tilt angle of the shock absorber.

[0012] Furthermore, the support assembly is provided with a motion guide groove, which extends along the height direction of the support assembly. The height direction of the support assembly is parallel to the height direction of the shock absorber, and the pneumatic actuator is movable along the motion guide groove.

[0013] Furthermore, the first connecting clamp is connected to the hydraulic cylinder via a universal joint.

[0014] Furthermore, the hydraulic cylinder is movably positioned relative to the support assembly to adjust the connection position between the hydraulic cylinder and the support assembly.

[0015] In this embodiment, the bracket assembly, as a basic support structure, can be used to fix and position the fixing component and the lateral loading mechanism, ensuring the stability and safety of the test process. The fixing component is connected to the bracket assembly and can be used to fix the shock absorber, enabling the shock absorber to maintain a predetermined position and angle during the test, simulating the installation state of the shock absorber under actual vehicle operating conditions, thereby more realistically reflecting its performance under lateral force. The lateral loading mechanism is used to apply lateral force to the shock absorber, simulating various lateral loads that the shock absorber may encounter during vehicle operation. The lateral clamp can be used to hold the shock absorber, ensuring... The uniform force distribution and the ability of the lateral clamp to switch between clamping and releasing states facilitate the installation and disassembly of the shock absorber, improving testing efficiency. The output end of the pneumatic actuator is connected to the lateral clamp, and by adjusting the driving force of the pneumatic actuator, different lateral forces are applied to the shock absorber. The pneumatically controlled loading method improves loading accuracy and adjustment convenience, avoiding the environmental pollution and equipment maintenance problems of traditional loading methods. At the same time, the pneumatically controlled loading method is low in cost, and the specific value of the lateral force can be achieved by adjusting the control knob, which is simple and convenient, solving the technical problems of high cost and complex operation of existing shock absorber testing devices. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an optional shock absorber testing device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of an optional shock absorber testing device according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of an optional first connecting clamp according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of an optional second connecting clamp according to an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of an optional shock absorber testing device according to an embodiment of this application;

[0022] Figure 6 This is a schematic diagram of an optional shock absorber testing device according to an embodiment of this application;

[0023] Figure 7 This is a schematic diagram of an optional lateral clamp according to an embodiment of this application.

[0024] The above drawings include the following reference numerals:

[0025] 1. Gantry frame;

[0026] 2. Hydraulic cylinder;

[0027] 3. Universal joint;

[0028] 4. First connecting clamp;

[0029] 5. Shock absorbers;

[0030] 6. Second connecting clamp;

[0031] 7. Fixed bracket;

[0032] 8. Lateral clamp;

[0033] 9. Force sensor;

[0034] 10. Spherical plain bearing;

[0035] 11. Intermediate fixture;

[0036] 12. Pneumatic actuators;

[0037] 13. Combination bracket;

[0038] 14. Motion guide groove;

[0039] 15. Upper connecting plate;

[0040] 17. Piston rod end connector;

[0041] 18. First connecting member; 180. First connecting part;

[0042] 19. Second connecting member; 190. Second connecting part;

[0043] 20. Slots;

[0044] 21. Assembly Department. Detailed Implementation

[0045] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0049] As the main damping element of the automotive suspension system, the automotive telescopic shock absorber assembly can absorb and mitigate road impacts and vibrations. It has the function of attenuating the vibration of elastic elements and absorbing and dissipating vibration energy, which has an important impact on the ride smoothness and comfort of the vehicle.

[0050] The performance of automotive telescopic shock absorber assemblies is inextricably linked to the vehicle's suspension structure and the resulting lateral forces. The lateral forces acting on the suspension and its components not only indicate the durability of the suspension and its components but also directly and significantly affect the overall vehicle ride comfort. In engineering applications, the torque perpendicular to the shock absorber in a strut-type suspension is generally referred to as the lateral force on the telescopic shock absorber. Because strut-type suspensions differ significantly from other traditional suspension types, the lateral forces they experience are crucial and cannot be ignored in the design and manufacturing of the suspension and shock absorber assemblies. Neglecting the lateral forces on the front shock absorber assembly will severely reduce its design quality and manufacturing standards, impacting overall vehicle performance.

[0051] Currently, in testing equipment for the fatigue performance of vibration damper assemblies, lateral force loading generally employs either a gravity-based loading device or a hydraulic solenoid valve-controlled loading device. Gravity-based loading testing devices have complex frame assembly, high manual labor intensity, and require high precision in lateral force control, making adjustment inconvenient. Hydraulic solenoid valve-controlled loading testing devices are costly, and the actuating cylinders are prone to oil leakage, which not only wastes oil and causes environmental pollution but also affects equipment use and shortens its service life.

[0052] Combination Figures 1 to 7 As shown, according to one aspect of an embodiment of this application, a shock absorber testing apparatus is provided.

[0053] Specifically, the shock absorber testing device includes a support assembly, a fixing assembly, and a lateral loading mechanism. The fixing assembly is connected to the support assembly and is used to fix the shock absorber 5. The lateral loading mechanism includes a lateral clamp 8 and a pneumatic actuator 12. The lateral clamp 8 has a clamping state for holding the shock absorber 5 and a releasing state for releasing the shock absorber 5. The output end of the pneumatic actuator 12 is connected to the lateral clamp 8 and is used to apply lateral force to the shock absorber 5.

[0054] Applying the technical solution of this embodiment, the bracket assembly, as a basic support structure, can be used to fix and position the fixing component and the lateral loading mechanism, ensuring the stability and safety of the test process. The fixing component is connected to the bracket assembly and can be used to fix the shock absorber 5, enabling the shock absorber 5 to maintain a predetermined position and angle during the test, simulating the installation state of the shock absorber under actual vehicle operating conditions, thereby more realistically reflecting its performance under lateral force. The lateral loading mechanism is used to apply lateral force to the shock absorber 5, simulating various lateral loads that the shock absorber may encounter during vehicle operation. The lateral clamp 8 can be used to clamp the shock absorber 5, ensuring the force... The lateral clamps 8 are evenly distributed and can switch between clamping and releasing states, facilitating the installation and removal of the shock absorber 5 and improving test efficiency. The output end of the pneumatic actuator 12 is connected to the lateral clamps 8. By adjusting the driving force of the pneumatic actuator 12, different lateral forces are applied to the shock absorber 5. The pneumatically controlled loading method improves loading accuracy and adjustment convenience, avoids environmental pollution and equipment maintenance problems of traditional loading methods, and has a lower cost. The specific value of the lateral force can be achieved by adjusting the control knob, which is simple and convenient, solving the technical problems of high cost and complex operation of existing shock absorber testing devices.

[0055] The support assembly can include multiple separately installed supports to connect the fixing components and the lateral loading mechanism, or it can be a single, integrated support connecting both the fixing components and the lateral loading mechanism. The support assembly design facilitates the installation of each component, reduces labor intensity, and minimizes the area required for testing.

[0056] It should be noted that the pneumatic actuator 12 refers to the element used to apply lateral force. The pneumatic actuator 12 is connected to the lateral clamp 8 through its output end. When the air pressure inside the pneumatic actuator 12 changes, a lateral force is generated and transmitted to the lateral clamp 8. The lateral clamp 8 then applies this force directly to the shock absorber 5 under test, simulating the lateral force situation that the shock absorber may encounter during vehicle operation. Generally, the pneumatic actuator 12 is a cylinder. When the air pressure inside the cylinder changes, the piston rod moves accordingly, generating a lateral force. Optionally, the pneumatic actuator 12 can also be a pneumatic gripper, pneumatic gripper, pneumatic diaphragm actuator, or other force output components based on pneumatic principles.

[0057] It should be understood that the shock absorber test device may also include other components for adjusting the output force of the pneumatic actuator 12, such as gas source, gas pipeline, pneumatic control components (such as pressure regulating valve, flow control valve, solenoid valve), etc.

[0058] The lateral loading mechanism is connected to the support assembly. Along the height direction of the shock absorber 5, the lateral loading mechanism is movably arranged relative to the support assembly to adjust the connection position between the lateral loading mechanism and the shock absorber 5.

[0059] In this embodiment, the adjustability of the lateral loading mechanism allows it to adapt to shock absorbers 5 of different lengths and sizes, ensuring the accuracy of the lateral force loading point, enhancing the versatility and adaptability of the device, enabling the testing of various types of shock absorbers 5, and improving testing efficiency and coverage.

[0060] In one exemplary embodiment of this application, a sliding guide rail can be provided on the support assembly. The pneumatic actuator 12 is connected to the sliding guide rail via a slider. The position of the lateral loading mechanism can be smoothly adjusted vertically via a manual or electric lifting mechanism to accommodate shock absorbers 5 of different lengths, ensuring that the loading point is accurately aligned with the lateral force-sensitive area of ​​the shock absorber. Alternatively, the base of the lateral loading mechanism can be configured as a pneumatic lifting platform, which is vertically connected to the support assembly via a pneumatic cylinder. When the loading position needs to be adjusted, simply controlling the air pressure of the pneumatic cylinder will raise or lower the platform, thereby moving the entire lateral loading mechanism. Alternatively, an electric screw adjustment mechanism, a lifting mechanism, or other similar devices can be used to adjust the position of the lateral loading mechanism.

[0061] Specifically, the lateral loading mechanism also includes a force sensor 9 and an intermediate clamp 11. The force sensor 9 is connected to the lateral clamp 8 and is used to detect the lateral force on the shock absorber 5. The intermediate clamp 11 is connected to the output end of the pneumatic actuator 12 and is used to hold the force sensor 9.

[0062] In this embodiment, the force sensor 9 can monitor the lateral force applied to the shock absorber 5 in real time, ensuring precise control of the test conditions. The intermediate clamp 11 is used to stabilize the position of the force sensor 9, avoid measurement errors caused by external interference, improve the accuracy and consistency of the test data, and facilitate subsequent data analysis and performance evaluation.

[0063] In one exemplary embodiment of this application, the intermediate clamp 11 can be designed as an electromagnetic locking type, enabling rapid connection and release with the force sensor 9 via electromagnetic force. The electromagnetically locked intermediate clamp can be quickly unlocked when changing test samples, improving operational efficiency; and during testing, the strong electromagnetic force ensures the force sensor is stably fixed and unaffected by external interference. Depending on actual needs, the intermediate clamp 11 can also be any other clamp using mechanical connections.

[0064] Specifically, the fixing component includes a hydraulic cylinder 2 and a first connecting clamp 4. The hydraulic cylinder 2 is mounted on the bracket assembly. The first connecting clamp 4 is connected to the output end of the hydraulic cylinder 2 and is used to connect the piston rod end of the shock absorber 5.

[0065] In this embodiment, the high-precision control characteristics of the hydraulic cylinder 2 can be used to ensure the vertical movement of the shock absorber 5 during the test. The first connecting clamp 4 is used to precisely fix the piston rod end of the shock absorber 5, avoiding offset and vibration during the movement, improving the stability and repeatability of the test process, and ensuring the reliability and validity of the test results.

[0066] It should be understood that the shock absorber testing device is also equipped with a hydraulic servo system for adjusting the hydraulic cylinder 2. The hydraulic servo system typically includes components such as a servo controller, servo valve, hydraulic source, and sensors. By precisely controlling the hydraulic cylinder 2, the hydraulic servo system adjusts the extension and retraction of the hydraulic cylinder, which can simulate the compression and tension movements experienced by the piston rod end of the shock absorber under different road conditions, such as bumpy roads, sharp turns, and braking. It can also simulate the various complex dynamic loads borne by the shock absorber 5 during vehicle operation, including vertical bounce and lateral sway, thereby accurately testing the performance and durability of the shock absorber 5.

[0067] Specifically, the first connecting clamp 4 includes an upper connecting plate 15 and a piston rod end connector 17. The first end of the upper connecting plate 15 is connected to the output end of the hydraulic cylinder 2; the first end of the piston rod end connector 17 is connected to the second end of the upper connecting plate 15, and the second end of the piston rod end connector 17 is connected to the piston rod end of the shock absorber 5.

[0068] In this embodiment, the combination of the upper connecting plate 15 and the piston rod end connector 17 can achieve a stable connection between the shock absorber 5 and the hydraulic cylinder 2, ensuring that the stability of the shock absorber 5 is not affected during lateral force loading and vertical movement, improving the safety and efficiency of the testing process, and avoiding test interruptions or data errors caused by unstable connection.

[0069] In one exemplary embodiment of this application, the piston rod end connector 17 can adopt a quick-connect design, such as by means of keyways, snap-fit, or magnetic attraction, to quickly fix it to the piston rod end of the shock absorber, shortening test preparation time and improving test efficiency. The upper connecting plate 15 can be configured as an angle-adjustable structure. By adding a ball joint or an adjustable angle coupling, the upper connecting plate 15 can be freely adjusted within a certain range to adapt to the direction of the hydraulic cylinder output end under different test environments.

[0070] Preferably, the upper connecting plate 15 includes a frustum and two clamping plates located at one end of the frustum. An assembly portion 21 is provided on the frustum. The assembly portion 21 can be a groove, hole, or other structure to connect with the output end of the hydraulic cylinder 2. For example, a strip groove and multiple connecting holes adjacent to the strip groove can be provided, which can be used for pin connections, bolt connections, etc., between the frustum and the output end of the hydraulic cylinder 2. The two clamping plates are spaced apart and each has an assembly hole. The piston rod end connector 17 is connected to the clamping plate through a connector. The connector passes through the assembly hole. The connector can be a rotating shaft, i.e., the piston rod end connector 17 is sleeved on the rotating shaft, and both ends of the rotating shaft are inserted into the two clamping plates respectively. The connector can also be a spherical bearing 10 to allow flexible swinging of the piston rod end connector 17 and the upper connecting plate 15 during movement.

[0071] Furthermore, the fixing assembly includes a second connecting clamp 6, which is used to connect the fixed end of the shock absorber 5. The second connecting clamp 6 is movably connected to the bracket assembly to adjust the tilt angle of the shock absorber 5.

[0072] In this embodiment, the movable connection between the second connecting clamp 6 and the bracket assembly allows the shock absorber 5 to adjust its tilt angle during testing, simulating the actual working state of the shock absorber 5 under different road conditions and driving conditions. This improves the realism and comprehensiveness of the test, enabling a more accurate evaluation of the shock absorber 5's performance under complex operating conditions. The fixed end of the shock absorber 5 should be understood as the end opposite to the piston rod end of the shock absorber 5.

[0073] In one exemplary embodiment of this application, the second connecting clamp 6 can be connected to the support assembly via a hinge, which allows the shock absorber 5 to be angled in the vertical plane. The hinge can be a single-axis or multi-axis design to provide more complex rotational degrees of freedom, and is equipped with a locking mechanism, such as a fastening bolt, which can be used to fix the angular position of the second connecting clamp 6 after adjustment to the desired angle. Depending on actual needs, the second connecting clamp 6 can also be equipped with an angle detection mechanism to provide real-time feedback on the current angular position.

[0074] Specifically, the second connecting clamp 6 includes a first connecting member 18 and a second connecting member 19. The first connecting member 18 has a first connecting portion 180 and is connected to the shock absorber 5 through the first connecting portion 180. The second connecting member 19 is connected to the first connecting member 18 at an angle and has a second connecting portion 190 and is connected to the bracket assembly through the second connecting portion 190. The relative angle between the second connecting member 19 and the bracket assembly is adjustable to adjust the tilt angle of the shock absorber 5.

[0075] In this embodiment, by adjusting the relative angle between the second connector 19 and the bracket assembly, the tilt angle of the shock absorber 5 can be precisely controlled to simulate various posture changes of the vehicle during driving.

[0076] In an exemplary embodiment of this application, the first connecting member 18 and the second connecting member 19 are fixedly connected. The first connecting portion 180 is a connecting groove or connecting hole opened on the first connecting member 18. The shock absorber 5 is connected to the first connecting member 18 by fasteners such as bolts. The second connecting member 19 has a slot 20. The second connecting portion 190 is a through hole opened on the side wall of the slot 20. A spherical bearing 10 can pass through the through hole and connect to the bracket. The slot 20 can accommodate part of the shock absorber 5. According to actual needs, the length direction of the first connecting member 18 can be set, which is the axial direction of the shock absorber 5, and the connection position between the shock absorber 5 and the first connecting member 18 can be adjusted to accommodate the connection of shock absorbers 5 of different sizes with the bracket. For example, a guide rail is provided on the first connecting member 18, and multiple locking holes are opened on the side wall of the guide rail at intervals along the length direction. By locking the shock absorber 5 in different positions of the locking holes, different sizes of shock absorbers 5 can be accommodated. The angle adjustment between the second connecting member 19 and the bracket can be achieved manually or through the cooperation of a rotating shaft and a locking mechanism. In some alternative embodiments, the second connector 19 and the first connector 18 can be connected in an angle-adjustable manner to improve the angle adjustment accuracy of the shock absorber 5.

[0077] Furthermore, a motion guide groove 14 is provided on the support assembly, which extends along the height direction of the support assembly. The height direction of the support assembly is parallel to the height direction of the shock absorber 5, and the pneumatic actuator 12 is movably arranged along the motion guide groove 14.

[0078] In this embodiment, the pneumatic actuator 12 can move freely along the motion guide groove 14 in the height direction of the support assembly, thereby adapting to shock absorbers 5 of different lengths and ensuring the accuracy of the lateral force loading point. The motion guide groove 14 can restrict the movement of the pneumatic actuator 12 in other directions while achieving the guiding function, that is, to achieve the limiting function of the pneumatic actuator 12, further improving the movement stability and accuracy of the pneumatic actuator 12.

[0079] In one exemplary embodiment of this application, the motion guide 14 can be a linear slide rail, and the pneumatic actuator 12 is connected to the slide rail via a slider. A ball screw mechanism is mounted on the slider and connected to the cylinder base. A motor drives the ball screw to rotate, causing the cylinder to move up and down along the slide rail, achieving precise positioning at different heights. Alternatively, the motion guide 14 can be a rack and pinion, and the base of the pneumatic actuator 12 is equipped with a gear that matches the rack. A servo motor drives the gear to rotate, causing the cylinder to slide up and down along the rack, achieving height adjustment. Depending on actual needs, magnetic drive, pneumatic drive, or other lifting methods can also be used to adjust the position of the pneumatic actuator 12.

[0080] Preferably, the first connecting clamp 4 is connected to the hydraulic cylinder 2 via a universal joint 3.

[0081] In this embodiment, the first connecting clamp 4 and the hydraulic cylinder 2 can be flexibly connected through the universal joint 3. The design of the universal joint 3 allows the first connecting clamp 4 to be freely adjusted in multiple directions, ensuring that the first connecting clamp 4 can maintain good alignment and contact with the shock absorber piston rod regardless of the movement state of the shock absorber piston rod or the direction of the lateral force.

[0082] In one exemplary embodiment of this application, such as Figure 3 As shown, the upper connecting plate 15 is provided with an assembly part 21 for connection with the universal joint 3. The assembly part 21 is usually an assembly groove or an assembly hole.

[0083] Preferably, the hydraulic cylinder 2 is movably disposed relative to the support assembly to adjust the connection position between the hydraulic cylinder 2 and the support assembly.

[0084] In this embodiment, the mobility of the hydraulic cylinder 2 allows for adjustment of the relative position of the hydraulic cylinder 2 and the support assembly as needed during the test, in order to adapt to different test requirements and changes in the size of the shock absorber 5. This improves the flexibility and efficiency of the test and enables more efficient preparation and conversion of different shock absorbers 5 for testing.

[0085] In one exemplary embodiment of this application, a slide rail system is provided on the support assembly. The base of the hydraulic cylinder 2 is connected to the slide rail via a slider, which can slide freely on the slide rail to adjust the connection position between the hydraulic cylinder 2 and the support assembly. The slide rail system is equipped with a manual or electric locking mechanism. When the hydraulic cylinder 2 is adjusted to the target position, the locking mechanism can fix the slider on the slide rail to prevent the hydraulic cylinder 2 from changing position during the test.

[0086] It should be noted that, in the above embodiments, the mechanism involving position adjustment can also be equipped with a position sensor as needed to provide real-time feedback on the current position.

[0087] This application also provides an embodiment of a pneumatically controlled loading fatigue testing device for lateral force on a front shock absorber assembly, used to simulate a real road test environment and improve the accuracy of fatigue testing of the front shock absorber assembly.

[0088] The front shock absorber assembly lateral force pneumatic loading fatigue testing device includes a gantry frame 1, a front shock absorber piston rod loading test equipment, and a cylinder wall lateral force pneumatic loading device. The gantry frame 1 has two vertical rods and a crossbeam connected to the ends of the rods. A hydraulic servo system is also installed on the gantry frame 1.

[0089] Specifically, the front reduction piston rod loading test equipment includes a hydraulic cylinder 2, a piston rod connecting fixture (i.e., the aforementioned first connecting fixture 4) and an L-shaped fixture (i.e., the aforementioned second connecting fixture 6). The hydraulic cylinder 2 is fastened to the gantry frame 1 and can move along the crossbeam of the gantry frame 1.

[0090] The piston rod connecting fixture includes an upper connecting plate 15, a spherical bearing 10, and a piston rod end connector 17. The two long horizontal plates of the upper connecting plate 15 can move along the axial direction of the holes in the spherical bearing 10. The spherical bearing 10 is existing technology. The piston rod end connector 17 is threadedly connected to the spherical bearing 10 and secured with a lock nut to prevent loosening. The hydraulic cylinder 2 is movably connected to the piston rod connecting fixture via a universal joint 3, ensuring that the axial direction of the hydraulic cylinder 2 is consistent with the movement direction of the shock absorber piston rod.

[0091] The L-shaped clamp consists of a vertical plate (i.e., the aforementioned first connecting member 18) and a horizontal plate (i.e., the aforementioned second connecting member 19). The vertical plate has two connecting holes, the positions of which are consistent with the positions of the two through holes of the lower mounting bracket of the shock absorber 5. The horizontal plate has a slot 20, and the horizontal plate is connected to a spherical bearing 10 by bolts passing through the slot 20. The L-shaped clamp is fastened to the shock absorber 5 and connected to the fixed bracket 7 through the spherical bearing 10. The L-shaped clamp can be used to generate a drag force on the bottom end of the shock absorber 5, so that the shock absorber 5 tilts at a predetermined angle to ensure that the assembly angle is consistent with that of the actual vehicle.

[0092] Specifically, the pneumatic loading device for lateral force application on the cylinder wall includes a shock absorber cylinder wall clamping fixture (i.e., the aforementioned lateral clamp 8), an S-shaped force sensor (i.e., the aforementioned force sensor 9), a U-shaped clamp (i.e., the aforementioned intermediate clamp 11), and a cylinder (i.e., the aforementioned pneumatic actuator 12).

[0093] The shock absorber cylinder wall clamping fixture consists of a pair of circular blocks. The inner diameter of the circular blocks is equal to or slightly larger than the outer cylinder wall diameter of the shock absorber. Two connecting holes are provided at corresponding positions on the circular blocks. The fit between the shock absorber cylinder wall clamping fixture and the outer cylinder wall of the shock absorber 5 is achieved through a fastening connection.

[0094] The combined support 13 is equipped with a motion guide groove 14. The cylinder is fixed to the combined support 13 and is securely connected by a slider embedded in the motion guide groove 14. The cylinder base has two parallel guide holes located in the horizontal plane, which are adapted to connect with the vertically arranged motion guide groove 14 on the combined support 13. A locking and positioning unit is provided between the cylinder and the combined support 13 to ensure that the cylinder can be limited laterally and displaced vertically on the combined support 13, and can also be fixed when the cylinder is moved to a position suitable for the test requirements. Preferably, the vertically arranged motion guide groove 14 on the combined support 13 is a T-shaped groove, that is, the groove shape is constricted. A T-shaped block is set on the cylinder base and placed in the T-shaped groove. The height of the cylinder on the combined support 13 is adjustable through the T-shaped groove.

[0095] The S-shaped force sensor is connected to the damper cylinder wall clamping fixture and the U-shaped fixture respectively via two spherical bearings 10. The S-shaped force sensor is threaded to the two spherical bearings 10 and secured with lock nuts. The end of the cylinder piston rod is threaded to the U-shaped fixture and secured with lock nuts. When the S-shaped force sensor is connected to the U-shaped fixture via the spherical bearings 10, the spherical bearings 10 are embedded in the U-shaped holes of the U-shaped fixture and connected to the U-shaped fixture by bolts.

[0096] The cylinder is connected to a pneumatic control element via an air pipe. Adjusting the pneumatic control element regulates the air intake into the cylinder, thus generating different magnitudes of force. An S-shaped force sensor is connected to a digital display via a data cable. The force generated by the cylinder acts on the S-shaped force sensor, and the specific force value is read from the digital display connected to the S-shaped force sensor. The shock absorber cylinder wall clamping fixture, the S-shaped force sensor, the spherical bearing 10 (the U-shaped clamp and the S-shaped force sensor are connected via the spherical bearing 10), the U-shaped clamp, and the cylinder's axes are all on a horizontal line. The force generated by the cylinder is horizontal and is transmitted through the S-shaped force sensor to the shock absorber cylinder wall clamping fixture, ultimately transferring the load to the shock absorber 5.

[0097] The pneumatically controlled loading fatigue testing device for the lateral force of the front shock absorber assembly in this embodiment reproduces the force movement of the front shock absorber assembly on a real vehicle, achieving the purpose of assessing the fatigue performance of the front shock absorber assembly and enabling better connection with the test track and users.

[0098] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0099] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0100] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0102] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0104] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0105] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A shock absorber testing device, characterized in that, include: Support assembly; A fixing component, which is connected to the bracket assembly, is used to fix the shock absorber (5); The lateral loading mechanism includes a lateral clamp (8) and a pneumatic actuator (12). The lateral clamp (8) has a clamping state for clamping the shock absorber (5) and a releasing state for releasing the shock absorber (5). The output end of the pneumatic actuator (12) is connected to the lateral clamp (8) and the pneumatic actuator (12) is used to apply a lateral force to the shock absorber (5).

2. The shock absorber testing apparatus according to claim 1, characterized in that, The lateral loading mechanism is connected to the support assembly. Along the height direction of the shock absorber (5), the lateral loading mechanism is movably arranged relative to the support assembly to adjust the connection position between the lateral loading mechanism and the shock absorber (5).

3. The shock absorber testing apparatus according to claim 1 or 2, characterized in that, The lateral loading mechanism also includes: Force sensor (9), the force sensor (9) is connected to the lateral clamp (8), the force sensor (9) is used to detect the lateral force on the shock absorber (5); An intermediate clamp (11) is connected to the output end of the pneumatic actuator (12) and is used to clamp the force sensor (9).

4. The shock absorber testing apparatus according to claim 1 or 2, characterized in that, The fixing component includes: Hydraulic cylinder (2), the hydraulic cylinder (2) is mounted on the bracket assembly; The first connecting clamp (4) is connected to the output end of the hydraulic cylinder (2) and is used to connect the piston rod end of the shock absorber (5).

5. The shock absorber testing apparatus according to claim 4, characterized in that, The first connecting clamp (4) includes: Upper connecting plate (15), the first end of which is connected to the output end of the hydraulic cylinder (2); Piston rod end connector (17), the first end of the piston rod end connector (17) is connected to the second end of the upper connecting plate (15), and the second end of the piston rod end connector (17) is connected to the piston rod end of the shock absorber (5).

6. The shock absorber testing apparatus according to claim 1 or 2, characterized in that, The fixing component includes: The second connecting clamp (6) is used to connect the fixed end of the shock absorber (5). The second connecting clamp (6) is movably connected to the bracket assembly to adjust the tilt angle of the shock absorber (5).

7. The shock absorber testing apparatus according to claim 6, characterized in that, The second connecting clamp (6) includes: The first connector (18) has a first connecting part (180) and is connected to the shock absorber (5) through the first connecting part (180). The second connector (19) is connected to the first connector (18) at an angle. The second connector (19) has a second connecting part (190) and is connected to the bracket assembly through the second connecting part (190). The relative angle between the second connector (19) and the bracket assembly is adjustable to adjust the tilt angle of the shock absorber (5).

8. The shock absorber testing apparatus according to claim 2, characterized in that, The support assembly is provided with a motion guide groove (14), which extends along the height direction of the support assembly. The height direction of the support assembly is parallel to the height direction of the shock absorber (5). The pneumatic actuator (12) is movably arranged along the motion guide groove (14).

9. The shock absorber testing apparatus according to claim 4, characterized in that, The first connecting clamp (4) is connected to the hydraulic cylinder (2) via a universal joint (3).

10. The shock absorber testing apparatus according to claim 4, characterized in that, The hydraulic cylinder (2) is movably disposed relative to the support assembly to adjust the connection position between the hydraulic cylinder (2) and the support assembly.

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