Test device for suspension system

Abstract

The utility model discloses a test device for a suspension system, and the device comprises a frame which is provided with a first connecting part used for connecting a swing arm; the load simulation assembly is movably arranged on the frame in the vertical direction, and the load simulation assembly comprises a balance weight piece used for simulating a load and a second connecting part used for being connected with the upper end of the shock absorber; the wheel simulation assembly comprises a wheel replacement part and a wheel rigidity simulation part, the wheel replacement part is provided with a third connecting part and a fourth connecting part which are arranged at an interval, the third connecting part is used for being connected with the steering knuckle, and the wheel rigidity simulation part is connected with the wheel replacement part and can elastically deform in the vertical direction. According to the test device for the suspension system, the actual use condition of the suspension system on a whole vehicle can be effectively simulated, so that the test precision is effectively improved. In addition, various working conditions can be simulated, so that an effective verification means is provided for product development of the suspension system.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle tests, in particular to a test device for a suspension system. Background Art

[0002] The suspension system is one of the most important systems in an automobile, and the system bench test plays an important role in development and verification. Compared with the vehicle-level test, the suspension assembly system-level test only requires the participation of the suspension assembly components. The bench is easy to build and the test process is convenient to monitor. The strength and durability of each component can be mastered in advance, which is beneficial to product development and improvement.

[0003] In the prior art, the method of fixed reaction force loading without load is usually adopted, and the suspension assembly is constrained by a rigid fixture to make it in a fixed constraint state. At this time, there is a large difference between the test and the actual vehicle motion state. The shock absorber and the spring cannot be freely compressed or stretched, and the force conditions of each component of the suspension are deviated from the actual situation, resulting in the distortion of the test results.

[0004] In addition, the vehicle bench test can also be adopted. The suspension system is assembled on the vehicle, and the suspension system moves with the vehicle inertia. The shock absorber and the spring can be freely compressed or stretched. In this way, although each component conforms to the actual force condition, the cost is significantly increased. Summary of the Utility Model

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides a test device for a suspension system, which can effectively simulate the actual use conditions of the suspension system on the vehicle, thereby effectively improving the test accuracy. In addition, it can also simulate various working conditions, thereby providing an effective verification means for the product development of the suspension system.

[0006] According to the test device for a suspension system of the utility model, the suspension system includes a steering knuckle, a shock absorber and a swing arm. The test device includes: a frame, on which a first connecting part for connecting the swing arm is provided; a load simulation component, which is movably arranged on the frame in the up-and-down direction. The load simulation component includes a counterweight for simulating a load and a second connecting part for connecting with the upper end of the shock absorber; a wheel simulation component, which includes a wheel substitute and a wheel stiffness simulation part. The wheel substitute is provided with a third connecting part and a fourth connecting part arranged at intervals. The third connecting part is used for connecting the steering knuckle. The wheel stiffness simulation part is connected with the wheel substitute and at least partially located under the wheel substitute, and the wheel stiffness simulation part can be elastically deformed in the up-and-down direction; an actuator and a reaction frame, one end of the actuator is connected with the reaction frame, and the other end is connected with the fourth connecting part.

[0007] According to the test device for the suspension system of the utility model, by setting a frame, a load simulation component, a wheel simulation component, an actuator and a reaction frame in the test device, the vertical degree of freedom of the suspension system can be effectively released, so that the shock absorber can be vertically compressed or stretched and bent during the loading process, thereby effectively simulating the actual use conditions of the suspension system on the whole vehicle, thereby effectively improving the test accuracy. In addition, it can also simulate a variety of working conditions, thereby providing an effective verification means for the product development of the suspension system.

[0008] In some embodiments, the wheel stiffness simulator is an air spring.

[0009] In some embodiments, the wheel substitute is supported on an upper side of the wheel stiffness simulator and is movable in a horizontal plane relative to the wheel stiffness simulator.

[0010] In some embodiments, the wheel simulation assembly further comprises a sliding member, which is disposed on one of the wheel substitute and the wheel stiffness simulation member and slidingly cooperates with the other of the wheel substitute and the wheel stiffness simulation member in a horizontal plane.

[0011] In some embodiments, the sliding member includes: a fixed seat and a rolling body, the fixed seat is fixed to the lower end of the wheel replacement member, the fixed seat is provided with a rolling groove, the rolling body is arranged in the rolling groove and abuts against the wheel stiffness simulation member in the upper and lower directions.

[0012] In some embodiments, there are multiple sliding members, and the multiple sliding members are arranged at intervals in a horizontal plane.

[0013] In some embodiments, three fourth connection portions are disposed on the wheel substitute, and the three fourth connection portions are respectively disposed at the front and rear sides of the wheel substitute and at a side of the wheel substitute facing away from the suspension system.

[0014] In some embodiments, the load simulation component also includes: a support frame, the support frame includes a top plate and two side plates, the counterweight is arranged on the top plate, the two side plates are connected to the opposite sides of the top plate and extend downward, and the two side plates are slidably connected to the frame up and down.

[0015] In some embodiments, the load simulation component further includes: a slide rail and a slider, the slide rail extends in the up and down directions, the slider is slidably disposed on the slide rail in the up and down directions, one of the slide rail and the slider is fixed to the side panel and the other is fixed to the frame.

[0016] In some embodiments, the test device further includes: a connecting bracket, the connecting bracket is fixedly connected to the first connecting portion, and the swing arm is adapted to be connected to the connecting bracket.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0018] Figure 1 is a schematic diagram of an angle of the test device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of another angle of the test device according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of the frame according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the load simulation component according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the wheel simulation component according to an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of the wheel substitute according to an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of the sliding member according to an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of the connecting bracket according to an embodiment of the present invention.

[0026] Reference Signs:

[0027] 100, test device;

[0028] 10, frame; 11, first connecting portion; 12, first connecting steel plate; 120, slot hole; 13, reinforcing steel plate;

[0029] 20, load simulation component; 21, counterweight; 22, second connecting portion; 23, support frame; 231, top plate; 232, side plate; 24, slide rail; 25, slider;

[0030] 30, wheel simulation component; 31, wheel substitute; 311, third connecting portion; 312, fourth connecting portion; 32, wheel stiffness simulation member; 33, sliding member; 331, fixed seat; 332, rolling body; 333, screw;

[0031] 40. Actuator;

[0032] 50. Reaction frame;

[0033] 60. Connecting bracket; 61. Second connecting steel plate; 62. Third connecting steel plate;

[0034] 200. Knuckle;

[0035] 300. Shock absorber;

[0036] 400. Swing arm. Detailed implementation manner

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] Below, refer to Figures 1-8 Describe a test device 100 for a suspension system according to an embodiment of the present invention.

[0039] As Figures 1-6 shown, for a test device 100 for a suspension system according to an embodiment of the present invention, the suspension system includes a knuckle 200, a shock absorber 300, and a swing arm. The test device 100 includes: a frame 10, a load simulation component 20, a wheel simulation component 30, an actuator 40, and a reaction frame 50.

[0040] A first connecting portion 11 for connecting the swing arm is provided on the frame 10; the load simulation component 20 is movably arranged on the frame 10 in the up and down direction. The load simulation component 20 includes a counterweight 21 for simulating a load and a second connecting portion 22 for connecting to the upper end of the shock absorber 300; the wheel simulation component 30 includes a wheel substitute 31 and a wheel stiffness simulation member 32. The wheel substitute 31 is provided with a third connecting portion 311 and a fourth connecting portion 312 arranged at intervals. The third connecting portion 311 is used to connect the knuckle 200. The wheel stiffness simulation member 32 is connected to the wheel substitute 31 and is at least partially located below the wheel substitute 31. The wheel stiffness simulation member 32 can be elastically deformed in the up and down direction; one end of the actuator 40 is connected to the reaction frame 50, and the other end is connected to the fourth connecting portion 312.

[0041] It should be noted that, for example Figure 1 and Figure 2As shown, the suspension system includes a steering knuckle 200, a shock absorber 300 and a swing arm, the steering knuckle 200 is connected to the shock absorber 300 and the suspension respectively, the shock absorber 300 is arranged on the upper side of the steering knuckle 200, and the swing arm is arranged on the lower side of the steering knuckle 200. Further, the suspension system also includes a wheel hub bearing, which is connected to the steering knuckle 200 and is arranged on the side of the steering knuckle 200 away from the frame 10.

[0042] For example Figure 3 As shown, the frame 10 can be a rectangular frame 10, the first connecting portion 11 is a column extending in the up-down direction of the rectangular frame 10, the number of the columns is four, each column has four sides, the bolt holes are evenly arranged on each side from top to bottom, and the swing arm is connected to the frame 10 through the bolt holes on the columns. The frame 10 is laid flat as a whole and fixed on the laboratory platform, and further, the connection between the frame 10 and the laboratory platform can be bolted.

[0043] For example Figure 1 and Figure 2 As shown, the counterweight 21 is arranged on the top of the load simulation component 20, and the counterweight 21 is a plate, and further, the counterweight 21 can be a lead plate. The second connecting portion 22 is located on the left and right sides of the load simulation component 20, and the shock absorber 300 is connected to the load simulation component 20 through the second connecting portion 22. Further, the connection between the upper end of the shock absorber 300 and the second connecting portion 22 can be bolted, and the connection between the second connecting portion 22 and the load simulation component 20 can also be bolted. The load simulation component 20 can realize vertical loading of the suspension system through the connection with the shock absorber 300.

[0044] For example Figure 5 As shown, the stiffness simulation part is connected to the wheel substitute 31 and is arranged at the lower side of the wheel substitute 31. For example, the wheel stiffness simulation part 32 can be completely arranged at the lower side of the wheel substitute 31. For another example, the wheel stiffness simulation part 32 can be partially arranged at the lower side of the wheel substitute 31. The wheel stiffness simulation part 32 is fixed on the test laboratory platform. Further, the connection between the wheel stiffness simulation part 32 and the laboratory platform can be bolted.

[0045] The wheel stiffness simulator 32 can simulate the stiffness of a vehicle tire and can deform in the up and down directions under load, thereby simulating the deformation characteristics of an actual wheel under different loads. Furthermore, the wheel stiffness simulator 32 can simulate the stiffness of different tires by adjusting parameters to meet different test requirements.

[0046] In this embodiment, the parameters of the tire stiffness of the vehicle model where the suspension system to be tested is located can be obtained before the test is carried out. According to the parameters of the tire stiffness, the stiffness of the wheel stiffness simulator 32 is adjusted. Then, the suspension system to be tested is installed in the test device 100. Due to the vertical constraints of the load simulation component 20 and the wheel simulation component 30 on the suspension system, the suspension system is maintained at the height position under a specific load. The test device 100 can implement the test of lateral and longitudinal external force loading on the suspension system under simulated load, so as to complete the test items of the lateral force and longitudinal force strength and durability of the suspension system.

[0047] For example Figure 1 and Figure 2 As shown, the test device 100 conducts a lateral external force loading test on the suspension system. At this time, the actuator 40 can apply a horizontal linear load to the fourth connecting portion 312 of the wheel substitute 31. The load is transmitted from the fourth connecting portion 312 to the third connecting portion 311, and then from the third connecting portion 311 to the hub bearing, so as to simulate the process of the load being transmitted from the vehicle tire contact point to the hub bearing. After the load is transmitted to the hub bearing, it is then transmitted from the hub bearing to the steering knuckle 200 and decomposed to the shock absorber 300 and the swing arm, thereby realizing the force on the suspension system and further realizing the test of simulating the force on the suspension system.

[0048] In addition, during the process of applying the lateral load by the actuator 40, the wheel substitute 31 and the suspension system will undergo lateral horizontal movement. Due to factors such as the geometric space relationship and rubber connection between the components of the suspension system, the wheel substitute 31 and the suspension system will also move vertically, so that the suspension system can swing up and down around the swing arm. Since the upper end of the shock absorber 300 is connected to the load simulation component 20 that can move in the up and down direction, and the wheel substitute 31 is connected to the wheel stiffness simulator 32 that can deform in the up and down direction, the vertical degree of freedom of the suspension system is released. Therefore, the shock absorber 300 can undergo vertical compression, tension and bending deformation under the action of the lateral external force load, so that the state of the suspension system to be tested can be consistent with the state of the suspension system assembled on the whole vehicle, and further effectively improve the accuracy of the test results.

[0049] In addition, the stiffness of the wheel stiffness simulator 32 can be adjusted according to the actual test requirements, so that the test device 100 can simulate the stiffness of different vehicle tires, so that the suspension system to be tested can be tested under various vehicle states, and further effectively improve the efficiency of the test device 100.

[0050] The test device 100 for a suspension system according to an embodiment of the present utility model can effectively release the vertical degree of freedom of the suspension system by arranging a frame 10, a load simulation component 20, a wheel simulation component 30, an actuator 40 and a reaction frame 50 in the test device 100, so that the shock absorber 300 can undergo vertical compression, tension and bending deformation during the loading process, thereby effectively simulating the actual use conditions of the suspension system on the vehicle, and further effectively improving the test accuracy. In addition, it can also simulate a variety of working conditions, thus providing an effective verification means for the product development of the suspension system.

[0051] In an embodiment of the present utility model, as Figure 3 shown, a first connecting steel plate 12 is welded to each of the left and right sides of the top of the frame 10. The first connecting steel plate 12 can be a trapezoidal steel plate. Further, one or more reinforcing steel plates 13 are arranged on the surface of each first connecting steel plate 12 facing the frame 10. The reinforcing steel plate 13 can be a triangular steel plate. The reinforcing steel plate 13 can be arranged perpendicular to the upper surface of the frame 10 and perpendicular to the first connecting steel plate 12. The reinforcing steel plate 13 can be connected to the upper surface of the frame 10 and the first connecting steel plate 12 by welding. Further, a slot hole 120 is arranged on the surface of each first connecting steel plate 12 facing away from the frame 10. The load simulation component 20 is connected to the frame 10 through the slot hole 120 on the first connecting steel plate 12 and can move in the up and down direction.

[0052] In this embodiment, by arranging the first connecting steel plate 12 and the reinforcing steel plate 13 on the top of the frame 10, the structural strength of the connection between the load simulation component 20 and the frame 10 can be effectively enhanced, and the phenomenon that the connection loosens or breaks under a large load can be effectively avoided, thereby effectively increasing the reliability of the connection.

[0053] In an embodiment of the present utility model, as Figure 1 and Figure 2 shown, the test device 100 further includes an actuator 40 and a reaction frame 50. For example, the actuator 40 can be a linear servo hydraulic cylinder. A bolt hole is arranged on the fourth connecting portion 312. The right end of the actuator 40 is connected to the fourth connecting portion 312 through the bolt hole. The loading of the suspension system can be realized through the linear reciprocating motion of the actuator 40. Further, the distance in the up and down direction from the center of the bolt hole on the fourth connecting portion 312 to the center of the bolt hole on the third connecting portion 311 is equal to the radius of the wheel, so as to realize the simulation that the load loading axis passes through the tire contact point.

[0054] For example, the reaction frame 50 can be a trapezoidal mounting base, and the connection between the left end of the actuator 40 and the reaction frame 50 can be a bolt connection. The reaction frame 50 is fixed on the test bench. Further, the connection between the reaction frame 50 and the test bench can be a bolt connection. The actuator 40 and the reaction frame 50 can be arranged on the left side of the wheel substitute 31, so as to realize the lateral loading of the suspension system; the actuator 40 and the reaction frame 50 can also be arranged on the front side or the rear side of the wheel substitute 31, so as to realize the longitudinal loading of the suspension system. Figure 1 and Figure 2 As shown in the unilateral loading, in actual tests, loading can also be carried out simultaneously on both sides of the suspension system according to requirements.

[0055] In this embodiment, by arranging the actuator 40 and the reaction frame 50 in the test device 100, a stable lateral load or longitudinal load can be applied to the suspension system, thereby effectively improving the stability of the test device 100 and effectively simulating the stress state of the suspension system in the whole vehicle, and further being able to more comprehensively evaluate the performance of the suspension system under complex road conditions.

[0056] In an embodiment of the present utility model, as Figure 5 shown, the wheel stiffness simulation member 32 is an air spring. For example, the wheel stiffness simulation member 32 can adopt a capsule air spring, and the capsule air spring is composed of one or more rubber air bags, and these air bags are filled with compressed air. By adjusting the air pressure inside the air bags, the stiffness of the capsule air spring can be changed, so as to realize the simulation of the stiffness of different vehicle tires, and further meet the different requirements of actual tests.

[0057] In this embodiment, by setting the wheel stiffness simulation member 32 as an air spring, the stiffness of different vehicle tires can be effectively simulated, so as to effectively expand the simulation range of the stiffness of vehicle tires. In addition, the air spring has low cost, simple operation and is easy to maintain.

[0058] In an embodiment of the present utility model, as Figure 5 shown, the wheel substitute 31 is supported on the upper side of the wheel stiffness simulation member 32 and is movable in the horizontal plane relative to the wheel stiffness simulation member 32.

[0059] When the suspension system is installed in the test device 100, the load simulation assembly 20 can transfer the vertical load to the wheel stiffness simulation member 32, so that the wheel stiffness simulation member 32 deforms in the up and down direction, and further effectively simulates the deformation characteristics of the vehicle tire. When the test device 100 applies a lateral or longitudinal load to the wheel substitute 31, the suspension system can move in the horizontal plane together with the wheel substitute 31, so as to effectively simulate the response of the suspension system when the vehicle tire is subjected to a lateral or longitudinal load.

[0060] In this embodiment, by supporting the wheel replacement 31 on the upper side of the wheel stiffness simulator 32 and being movable relative to the wheel stiffness simulator 32 in the horizontal plane, the behavior of the suspension system of the vehicle under actual driving conditions can be effectively simulated, so that the stability and controllability of the suspension system under lateral or longitudinal loads can be effectively evaluated, and the work efficiency can be effectively improved.

[0061] In an embodiment of the present utility model, as Figure 5 shown, the wheel simulation assembly 30 further includes a sliding member 33. The sliding member 33 is disposed on one of the wheel replacement 31 and the wheel stiffness simulator 32, and is in sliding fit with the other of the wheel replacement 31 and the wheel stiffness simulator 32 in the horizontal plane.

[0062] For example, the sliding member 33 is disposed at the bottom of the wheel replacement 31 and abuts against the top of the wheel stiffness simulator 32, and the wheel replacement 31 can slide in the horizontal plane through the sliding member 33. Another example is that the sliding member 33 is disposed at the top of the wheel stiffness simulator 32 and abuts against the bottom of the wheel replacement 31, and the wheel replacement 31 can slide in the horizontal plane through the sliding member 33.

[0063] By providing the sliding member 33 in the wheel simulation assembly 30 in this embodiment, it is possible to avoid the wheel replacement 31 being unable to slide due to excessive friction, thereby effectively improving the reliability of the test device 100 and further effectively improving the accuracy of the test results.

[0064] In an embodiment of the present utility model, as Figures 5-7 shown, the sliding member 33 includes a fixed seat 331 and a rolling body 332. The fixed seat 331 is fixed to the lower end of the wheel replacement 31. A rolling groove is provided on the fixed seat 331. The rolling body 332 is disposed in the rolling groove and abuts against the wheel stiffness simulator 32 in the up-down direction.

[0065] For example, the sliding member 33 can adopt a screw-type universal ball. A bolt hole is provided on the lower side of the wheel replacement 31. A screw 333 is provided at the upper end of the fixed seat 331. The upper end of the fixed seat 331 and the lower end of the wheel replacement 31 can be connected through the screw 333. The rolling groove is provided at the lower end of the fixed seat 331 and opens downward. The rolling body 332 is disposed in the rolling groove and can roll in the rolling groove. Further, the rolling body 332 can be a ball. The ball abuts against the wheel stiffness simulator 32 in the up-down direction and forms a point contact. The rolling of the ball in the rolling groove can enable the wheel replacement 31 to slide smoothly relative to the wheel stiffness simulator 32 in the horizontal plane.

[0066] In this embodiment, by providing a fixed seat 331 and rolling elements 332 in the sliding member 33, the structural strength of the sliding member 33 can be effectively improved, and the frictional force between the sliding member 33 and the wheel stiffness simulation member 32 can be reduced, thereby effectively improving the stability of the wheel simulation assembly 30 and the accuracy of the test results.

[0067] In one embodiment of the present utility model, as Figure 5 shown, the number of sliding members 33 is multiple, and the multiple sliding members 33 are arranged at intervals in the horizontal plane. For example, the number of sliding members 33 can be two, three, four, five, six or more. In a specific example, the number of sliding members 33 is four and they are arranged at intervals on the lower side of the wheel replacement member 31.

[0068] In this embodiment, by setting the number of sliding members 33 to be multiple, the vertical load can be evenly distributed on the wheel stiffness simulation member 32, avoiding damage to the wheel stiffness simulation member 32 caused by excessive single-point load, thereby effectively protecting the wheel stiffness simulation member 32, and further effectively increasing the service life of the test device 100. In addition, the frictional force between the sliding member 33 and the wheel stiffness simulation member 32 can be further reduced, thereby further improving the accuracy of the test results.

[0069] In one embodiment of the present utility model, as Figure 5 and Figure 6 shown, the wheel replacement member 31 is provided with three fourth connection portions 312, and the three fourth connection portions 312 are respectively provided on the front and rear sides of the wheel replacement member 31 and on the side of the wheel replacement member 31 facing away from the suspension system.

[0070] For example, the wheel replacement member 31 is a plate welded part, in an L shape. The wheel replacement member 31 is provided with a left side surface, a front side surface, a rear side surface and a lower side surface. The third connection portion 311 is provided on the left side surface of the wheel replacement member 31 and above the fourth connection portion 312. Further, bolt holes are provided on the third connection portion 311, and the hub bearing is connected to the third connection portion 311 through the bolt holes.

[0071] For example, the three fourth connection portions 312 are respectively provided on the front side surface, the rear side surface and the left side surface of the wheel replacement member 31. Among them, the fourth connection portion 312 on the left side surface of the wheel replacement member 31 is located at a lower position than the third connection portion 311. Further, bolt holes are provided on the front side surface, the rear side surface and the left side surface of the wheel replacement member 31, and one end of the actuator 40 can be connected to the front side, the rear side and the left side positions of the wheel replacement member 31 through the bolt holes.

[0072] By providing three fourth connecting parts 312 at different positions on the wheel replacement part 31, this embodiment enables the actuator 40 to be connected to different positions of the wheel replacement part 31, so that the actuator 40 can apply lateral load or longitudinal load to the suspension system through the wheel replacement part 31, thereby effectively increasing the types of vehicle working conditions that can be simulated by the test device 100 and effectively ensuring the comprehensiveness of the test data.

[0073] In one embodiment of the present invention, Figure 4 As shown, the load simulation component 20 also includes a support frame 23, which includes a top plate 231 and two side plates 232. The counterweight 21 is arranged on the top plate 231, and the two side plates 232 are connected to the opposite sides of the top plate 231 and extend downward. The two side plates 232 are slidably connected to the frame 10 up and down.

[0074] For example, the support frame 23 is a U-shaped plate, and the top plate 231 of the support frame 23 is horizontally arranged, and bolt holes are arranged on the top plate 231, and the counterweight 21 can be fixedly connected to the top plate 231 through the bolt holes. The two side plates 232 of the support frame 23 are vertically arranged, and the upper end of the left plate 232 is connected to the left end of the top plate 231, and the upper end of the right plate 232 is connected to the right end of the top plate 231. Further, bolt holes are arranged on the side plates 232 for connecting with the second connecting part 22. The two side plates 232 are respectively slidably connected to the two first connecting steel plates 12 of the frame 10 in the up-down direction, and the side plates 232 are arranged on the side of the first connecting steel plates 12 away from the frame 10.

[0075] In this embodiment, a support frame 23 is provided in the load simulation component 20, and the two side plates 232 of the support frame 23 are slidably connected to the frame 10 up and down. The weight of the counterweight 21 can be effectively transferred to the suspension system through the support frame 23, and the bumps encountered by the vehicle during driving can be effectively simulated, thereby effectively releasing the vertical freedom of the suspension system, and then effectively improving the reliability of the test.

[0076] In one embodiment of the present invention, Figure 4 As shown, the load simulation component 20 also includes a slide rail 24 and a slider 25. The slide rail 24 extends in the up and down direction, and the slider 25 is slidably arranged on the slide rail 24 in the up and down direction. One of the slide rail 24 and the slider 25 is fixed on the side plate 232 and the other is fixed to the frame 10.

[0077] The slide rails 24 and the sliders 25 correspond one to one, and the number of the slide rails 24 and the sliders 25 can be multiple, for example, the number of the slide rails 24 and the sliders 25 can be two, three, four, five, six or more. For example, the slider 25 is fixedly connected to the side of the two side plates 232 facing the frame 10 through the bolt holes on the two side plates 232 of the support frame 23, and the slide rail 24 is fixedly connected to the side of the two first connecting steel plates 12 away from the frame 10 through the slot holes 120 of the two first connecting steel plates 12 of the frame 10. For another example, the slide rail 24 is fixedly connected to the side of the two side plates 232 facing the frame 10 through the bolt holes on the two side plates 232 of the support frame 23, and the slider 25 is fixedly connected to the side of the two first connecting steel plates 12 away from the frame 10 through the slot holes 120 of the two first connecting steel plates 12 of the frame 10.

[0078] In a specific example, if Figure 4 As shown, there are four slide rails 24 and four sliders 25, the sliders 25 are fixedly connected to the sides of the two side plates 232 facing the frame 10 through the bolt holes on the two side plates 232 of the support frame 23, and the slide rails 24 are fixedly connected to the sides of the two first connecting steel plates 12 facing away from the frame 10 through the slots 120 of the two first connecting steel plates 12 of the frame 10. Thus, the load simulation assembly 20 can slide in the up and down directions.

[0079] This embodiment can effectively reduce the friction when the load simulation component 20 slides in the up and down directions by setting the slide rail 24 and the slider 25 in the load simulation component 20, thereby effectively ensuring that the load simulation component 20 slides up and down smoothly, thereby effectively reducing the error of the test result.

[0080] In one embodiment of the present invention, Figure 4 As shown, the weight of the counterweight 21 is adjustable. For example, the size and number of the counterweight 21 can be adjusted according to the load requirements of the test. By changing the weight of the counterweight 21, the response of the suspension system under different load conditions can be simulated.

[0081] In this embodiment, the weight of the counterweight 21 is set to be adjustable, so that the tester can simulate various load conditions as needed, thereby effectively increasing the flexibility of the test device 100.

[0082] In one embodiment of the present invention, Figure 8 As shown, the test device 100 further includes a connecting bracket 60 , which is firmly connected to the first connecting portion 11 , and the swing arm is suitable for being connected to the connecting bracket 60 .

[0083] For example, the connecting bracket 60 can be a sheet metal welded part, and the shape of the connecting bracket 60 can be customized according to the type of the suspension system. In a specific example, the connecting bracket 60 includes a second connecting steel plate 61 and a third connecting steel plate 62. The second connecting steel plate 61 is arranged in the up-down direction, and the third connecting steel plate 62 is arranged perpendicular to the second connecting steel plate 61. Further, bolt holes are provided on both the second connecting steel plate 61 and the third connecting steel plate 62. The connecting bracket 60 is fixedly connected to the first connecting portion 11 through the bolt holes on the second connecting steel plate 61 and the bolt holes on the first connecting portion 11, and the connecting bracket 60 is connected to the swing arm through the bolt holes on the third connecting steel plate 62.

[0084] In this embodiment, by providing the connecting bracket 60 in the test device 100, the suspension system can be reliably connected to the frame 10 and the connection process can be effectively simplified, thereby effectively increasing the installation efficiency of the suspension system. In addition, the type of the connecting bracket 60 can be changed to adapt to different types of tested suspension systems, so that the test range of the test device 100 can be effectively expanded.

[0085] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0086] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0087] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0089] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A test device for a suspension system, the suspension system comprising a steering knuckle, a shock absorber and a swing arm, characterized in that: The test device comprises: A frame, wherein the frame is provided with a first connecting portion for connecting the swing arm; A load simulation component, the load simulation component is movably disposed on the frame in an up-down direction, the load simulation component comprises a counterweight for simulating a load and a second connection portion for connecting to an upper end of the shock absorber; A wheel simulation component, the wheel simulation component comprising a wheel substitute and a wheel stiffness simulation component, the wheel substitute is provided with a third connection portion and a fourth connection portion arranged at intervals, the third connection portion is used to connect the steering knuckle, the wheel stiffness simulation component is connected to the wheel substitute and is at least partially located at the lower side of the wheel substitute, and the wheel stiffness simulation component is elastically deformable in the up-down direction; An actuator and a reaction frame, wherein one end of the actuator is connected to the reaction frame, and the other end is connected to the fourth connecting portion.

2. The test device for the suspension system according to claim 1, characterized in that: The wheel stiffness simulation component is an air spring.

3. The test device for a suspension system according to claim 1, characterized in that: The wheel substitute is supported on an upper side of the wheel stiffness simulator and is movable in a horizontal plane relative to the wheel stiffness simulator.

4. The test device for a suspension system according to claim 3, characterized in that: The wheel simulation assembly further comprises a sliding member, which is disposed on one of the wheel substitute and the wheel stiffness simulation member and is slidably matched with the other of the wheel substitute and the wheel stiffness simulation member in a horizontal plane.

5. The test device for a suspension system according to claim 4, characterized in that: The sliding member includes: a fixed seat and a rolling body. The fixed seat is fixed to the lower end of the wheel substitute. The fixed seat is provided with a rolling groove. The rolling body is arranged in the rolling groove and abuts against the wheel stiffness simulation member in the upper and lower directions.

6. The test device for a suspension system according to claim 5, characterized in that: There are multiple sliding members, and the multiple sliding members are arranged at intervals in a horizontal plane.

7. The test device for a suspension system according to any one of claims 1 to 6, characterized in that: The wheel substitute is provided with three fourth connection parts, and the three fourth connection parts are respectively arranged at the front and rear sides of the wheel substitute and at a side of the wheel substitute away from the suspension system.

8. The test device for a suspension system according to any one of claims 1 to 6, characterized in that: The load simulation component also includes: a support frame, the support frame includes a top plate and two side plates, the counterweight is arranged on the top plate, the two side plates are connected to the opposite sides of the top plate and extend downward, and the two side plates are slidably connected to the frame up and down.

9. The test device for a suspension system according to claim 8, characterized in that: The load simulation component also includes: a slide rail and a slider, the slide rail extends in the up-down direction, the slider is slidably arranged on the slide rail in the up-down direction, one of the slide rail and the slider is fixed to the side plate and the other is fixed to the frame.

10. The test device for a suspension system according to claim 1, characterized in that: The test device further comprises: a connecting bracket, the connecting bracket is firmly connected to the first connecting portion, and the swing arm is suitable for being connected to the connecting bracket.

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