Bench test equipment

Abstract

The embodiment of the utility model provides bench test equipment, and the equipment comprises a fixing device which comprises a pull rod structure, a swing arm structure, and a shock absorber structure, the pull rod structure is connected with a first station of a to-be-tested piece, the swing arm structure is connected with a second station of the to-be-tested piece, and the shock absorber structure is connected with a third station of the to-be-tested piece or is connected with the swing arm structure. The loading device is connected with the fourth station of the to-be-tested piece, and the loading device is provided with at least one interface station for loading test of at least one of lateral force, longitudinal force, braking force or vertical force. The pull rod structure, the swing arm structure and the shock absorber structure can be connected with a to-be-tested piece, and the fourth station of the to-be-tested piece is also connected with a loading device, so that the constraint of the to-be-tested piece in the use process is simulated by applying a lateral force, a longitudinal force, a braking force or a vertical force to the loading device, the stress of the to-be-tested piece is ensured to accord with the actual condition, and the test efficiency is improved. And the test of the to-be-tested piece is completed.

Description

Technical Field

[0001] This application relates to the technical field of test devices, and more particularly, to a bench test equipment. Background Art

[0002] The steering knuckle, also known as the "goat horn", is one of the important parts in the automotive steering axle. It enables the vehicle to drive stably and transmits the driving direction sensitively. The steering knuckle is the hinge for wheel steering and is generally fork-shaped. There are two coaxial holes for installing the kingpin on the upper and lower forks, and the steering knuckle journal is used to install the wheel. The two ears of the upper pin hole on the steering knuckle are connected to the knuckle parts at both ends of the front axle through the kingpin, allowing the front wheels to deflect around the kingpin by a certain angle to steer the vehicle. To reduce wear, a bronze bushing is pressed into the pin hole of the steering knuckle, and the lubrication of the bushing is achieved by injecting grease through a grease nipple installed on the steering knuckle. To make the steering flexible, a bearing is installed between the lower ear of the steering knuckle and the knuckle part of the front axle. An adjusting shim is also installed between the upper ear of the steering knuckle and the knuckle part to adjust the clearance therebetween.

[0003] The function of the steering knuckle is to transmit and bear the load at the front of the vehicle, support and drive the front wheels to rotate around the kingpin to steer the vehicle. Under the driving state of the vehicle, it bears variable impact loads, so it is required to have high strength and toughness. Therefore, strict tests need to be carried out on the automotive steering knuckle before it is officially put into use. Thus, there is an urgent need for a device to solve this technical problem. Utility Model Content

[0004] The purpose of the embodiments of this application is to provide a bench test equipment that can simulate the actual situation constraint mode of the test piece to be tested, thereby ensuring that the force on the test piece to be tested conforms to the actual situation.

[0005] In a first aspect, the embodiments of this application provide a bench test equipment, including: a fixing device, including a tie rod structure, a swing arm structure and a shock absorber structure, the tie rod structure connects the first working station of the test piece to be tested, the swing arm structure connects the second working station of the test piece to be tested, and the shock absorber structure connects the third working station of the test piece to be tested or connects the swing arm structure; a loading device, which connects the fourth working station of the test piece to be tested, and the loading device is configured with at least one interface working station for loading tests of at least one of lateral force, longitudinal force, braking force or vertical force.

[0006] In the above implementation process, the tie rod structure, the swing arm structure and the shock absorber structure can all be connected to the test piece to be tested, and the fourth working station of the test piece to be tested is also connected to a loading device. When applying lateral force, longitudinal force, braking force or vertical force to the loading device, it is possible to simulate the constraints of the test piece to be tested during use, ensure that the force on the test piece to be tested conforms to the actual situation, and complete the test of the test piece to be tested.

[0007] In some embodiments, the tie rod structure includes a tie rod shaft, a tie rod cylinder, a tie rod ball joint and a tie rod base. One end of the tie rod shaft is connected to the tie rod cylinder, and the other end is connected to the test piece. The tie rod ball joint is connected to the side of the tie rod cylinder away from the tie rod shaft, and the tie rod base is connected to the tie rod ball joint.

[0008] In the above implementation process, the tie rod shaft, tie rod tube, tie rod ball joint and tie rod base are connected respectively, which can be used to simulate the steering rod and other rods in the suspension, such as the rods in the multi-link suspension, so as to ensure that the force exerted by the tie rod structure on the test piece is consistent with its actual usage state, which is conducive to the testing of the test piece.

[0009] In some embodiments, the connection position between the pull rod shaft and the pull rod barrel is adjustable. By adjusting the connection position between the pull rod shaft and the pull rod barrel, the length of the pull rod structure can be adjusted, thereby achieving the purpose of simulating rods of different lengths.

[0010] In some embodiments, the swing arm structure includes a swing arm mounting block, a first swing arm assembly and a second swing arm assembly, the swing arm mounting block is connected to the test piece, and the first swing arm assembly and the second swing arm assembly are both connected to the swing arm mounting block so that the first swing arm assembly and the second swing arm assembly form a preset angle.

[0011] In the above implementation process, the first swing arm assembly and the second swing arm assembly are both connected to the swing arm mounting block to simulate the swing arm in the suspension, such as the lower swing arm in the McPherson suspension, the upper swing arm and the lower swing arm in the double wishbone suspension, so as to ensure that the force exerted by the swing arm structure on the test piece is consistent with its actual usage state, which is conducive to the testing of the test piece.

[0012] In some embodiments, the first swing arm assembly includes a first swing arm shaft, a first swing arm tube, a swing arm ball joint and a first swing arm base, one end of the first swing arm shaft is connected to the swing arm mounting block, and the other end thereof is connected to the first swing arm tube, the swing arm ball joint is connected to the side of the first swing arm tube away from the first swing arm shaft, and the first swing arm base is connected to the swing arm ball joint.

[0013] In the above implementation process, the first swing arm shaft, the first swing arm tube, the swing arm ball joint and the first swing arm base are connected to each other to simulate the swing arm in the suspension, which can ensure that the force exerted by the swing arm structure on the test piece is consistent with its actual usage state, which is conducive to the testing of the test piece.

[0014] In some embodiments, the connection position between the first swing arm shaft and the first swing arm tube is adjustable. By adjusting the connection position between the first swing arm shaft and the first swing arm tube, the length of the first swing arm assembly can be adjusted to achieve the purpose of simulating swing arms of different lengths.

[0015] In some embodiments, the second swing arm assembly includes a rotating pair, a second swing arm shaft, a second swing arm cylinder, a swing arm universal joint, and a second swing arm base. The rotating pair connects to the swing arm mounting block. One end of the second swing arm shaft connects to the rotating pair, and the other end thereof connects to the second swing arm cylinder. The swing arm universal joint connects to a side of the second swing arm cylinder facing away from the second swing arm shaft, and the second swing arm base connects to the swing arm universal joint.

[0016] In the above implementation process, the rotating pair, the second swing arm shaft, the second swing arm cylinder, the swing arm universal joint, and the second swing arm base are connected to each other to simulate the swing arm in the suspension, which can ensure that the force exerted by the swing arm structure on the test piece is consistent with its actual use state, facilitating the test of the test piece.

[0017] In some embodiments, the connection position between the second swing arm shaft and the second swing arm cylinder is adjustable. By adjusting the connection position between the second swing arm shaft and the second swing arm cylinder, the length adjustment of the second swing arm assembly is realized, achieving the purpose of simulating swing arms of different lengths.

[0018] In some embodiments, the shock absorber structure includes a shock absorber shaft, a shock absorber cylinder, a shock absorber ball joint, and a shock absorber base. One end of the shock absorber shaft connects to the test piece, and the other end thereof connects to the shock absorber cylinder. The shock absorber ball joint connects to a side of the shock absorber cylinder facing away from the shock absorber shaft, and the shock absorber base connects to the shock absorber ball joint.

[0019] In the above implementation process, the shock absorber shaft, the shock absorber cylinder, the shock absorber ball joint, and the shock absorber base are connected to each other to simulate the shock absorber in the suspension, which can ensure that the force exerted by the shock absorber structure on the test piece is consistent with its actual use state, facilitating the test of the test piece.

[0020] In some embodiments, the connection position between the shock absorber shaft and the shock absorber cylinder is adjustable. By adjusting the connection position between the shock absorber shaft and the shock absorber cylinder, the length adjustment of the shock absorber structure is realized, achieving the purpose of simulating shock absorbers of different lengths.

[0021] In some embodiments, when performing the lateral force loading test, the loading device is configured with a first interface and a second interface. The bench test equipment further includes a connecting frame, a lateral oil cylinder, a lateral connecting rod, and a lateral base. The lateral oil cylinder is respectively ball-jointed to the first interface and the connecting frame, and the lateral connecting rod is respectively ball-jointed to the second interface and the lateral base.

[0022] In the above implementation process, the lateral oil cylinder is connected to the first interface, the lateral connecting rod is connected to the second interface, and the loading device is connected to the test piece to be tested. When a lateral force is provided by the lateral oil cylinder, the lateral force acts on the hub bearing mounted on the test piece to be tested through the simulated tire, and then is transmitted to the test piece to be tested, the tie rod structure, the swing arm structure, and the shock absorber structure, and finally transmitted to the ground, realizing the loading test of the lateral force on the test piece to be tested.

[0023] In some embodiments, when performing the loading test of the longitudinal force, the loading device is further configured with a third interface, and the bench test equipment further includes a first longitudinal base, a longitudinal oil cylinder, a longitudinal connecting rod, and a second longitudinal base. The longitudinal oil cylinder is respectively ball-jointed to the first longitudinal base and the third interface, and the longitudinal connecting rod is respectively ball-jointed to the second longitudinal base and the second interface.

[0024] In the above implementation process, the longitudinal oil cylinder is connected to the third interface, the longitudinal connecting rod is connected to the second interface, and the loading device is connected to the test piece to be tested. When a longitudinal force is provided by the longitudinal oil cylinder, the lateral force acts on the hub bearing mounted on the test piece to be tested through the simulated tire, and then is transmitted to the test piece to be tested, the tie rod structure, the swing arm structure, and the shock absorber structure, and finally transmitted to the ground, realizing the loading test of the longitudinal force on the test piece to be tested.

[0025] In some embodiments, when performing the loading test of the braking force, the bench test equipment further includes a braking oil cylinder and a braking base. The braking oil cylinder is respectively ball-jointed to the braking base and the second interface.

[0026] In the above implementation process, the braking oil cylinder is connected to the second interface, and the loading device is connected to the test piece to be tested. When a braking force is provided by the braking oil cylinder, the braking force is not only transmitted to the test piece to be tested through the simulated tire and the hub bearing, but also transmitted to the caliper mounting hole of the test piece to be tested through the simulated tire, realizing the loading test of the braking force on the test piece to be tested.

[0027] In some embodiments, when performing the loading test of the vertical force, the loading device is further configured with a fourth interface, and the bench test equipment further includes a vertical oil cylinder and a vertical base. The vertical oil cylinder is respectively ball-jointed to the vertical base and the fourth interface.

[0028] In the above implementation process, the vertical oil cylinder is connected to the fourth interface, and the loading device is connected to the test piece to be tested. When a vertical force is provided by the vertical oil cylinder, it can be used to simulate the tire mounted on the hub bearing of the test piece to be tested, and finally transmit the simulated tire rotation torque generated by the vertical force to the test piece to be tested, realizing the loading test of the vertical force on the test piece to be tested.

[0029] Other features and advantages of the present disclosure will be set forth in the following description, or may be learned by inference from the description or without doubt determined, or may be learned by implementing the above technologies of the present disclosure.

[0030] To make the above objects, features, and advantages of the present application more apparent and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, provides a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 Structural schematic diagram of the fixing device of the bench test equipment provided by the embodiment of the present application;

[0033] Figure 2 Structural schematic diagram of the swing arm structure of the bench test equipment provided by the embodiment of the present application;

[0034] Figure 3 Structural schematic diagram of the loading device of the bench test equipment provided by the embodiment of the present application;

[0035] Figure 4 Structural schematic diagram of the lateral force loading test of the bench test equipment provided by the embodiment of the present application;

[0036] Figure 5 Structural schematic diagram of the longitudinal force loading test of the bench test equipment provided by the embodiment of the present application;

[0037] Figure 6 Structural schematic diagram of the braking force loading test of the bench test equipment provided by the embodiment of the present application;

[0038] Figure 7 Structural schematic diagram of the vertical force loading test of the bench test equipment provided by the embodiment of the present application.

[0039] REFERENCE NUMERALS

[0040] 10. Fixing device; 11. Tie rod structure; 110. Tie rod shaft; 111. Tie rod cylinder; 112. Tie rod ball joint; 113. Tie rod base; 12. Swing arm structure; 120. Swing arm mounting block; 121. First swing arm assembly; 1210. First swing arm shaft; 1211. First swing arm cylinder; 1212. Swing arm ball joint; 1213. First swing arm base; 122. Second swing arm assembly; 1220. Second swing arm shaft; 1221. Second swing arm cylinder; 1222. Revolute pair; 1223. Swing arm universal joint; 1224. Second swing arm base; 13. Shock absorber structure; 130. Shock absorber shaft; 131. Shock absorber cylinder; 132. Shock absorber ball joint; 133. Shock absorber base; 20. Loading device; 21. First interface; 22. Second interface; 23. Third interface; 24. Fourth interface; 30. Connecting frame; 31. Lateral oil cylinder; 32. Lateral connecting rod; 33. Lateral base; 40. First longitudinal base; 41. Longitudinal oil cylinder; 42. Longitudinal connecting rod; 43. Second longitudinal base; 50. Brake oil cylinder; 51. Brake base; 60. Vertical oil cylinder; 61. Vertical base; 70. Specimen to be tested. Detailed implementation manners

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and illustrated herein usually can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0042] In the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0043] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

[0044] In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal connection between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and do not indicate or imply the relative importance and quantity of the indicated devices, components or parts. Unless otherwise specified, the meaning of "plural" is two or more.

[0046] Embodiment

[0047] The knuckle is an important part of the vehicle suspension system. During actual use, the knuckle is mainly subjected to road surface excitation transmitted by the tire and the pushing and pulling forces of the steering system. These excitations affect the service life of the knuckle and may cause the knuckle to break. In order to verify the fatigue performance and strength of the knuckle during the development and manufacturing stages, a bench test needs to be carried out.

[0048] Currently in the industry, the knuckle is usually constrained by completely fixing each connection point of the knuckle or simulating the installation of a real vehicle, and then the excitation is implemented through a hydraulic cylinder or an electric cylinder. However, there is no unified standard for the knuckle constraint and loading methods.

[0049] Because there is no industry or national standard for the knuckle constraint and loading methods in the knuckle bench test. The test methods and test devices of each enterprise are different. Using the method of completely fixing each connection point of the knuckle easily leads to a large difference in the stress state of the knuckle from that of a real vehicle. Using the constraint method of simulating the installation of a real vehicle, due to the different hard point coordinates of different suspensions, it is necessary to redesign the tooling for different models of knuckles, and the versatility of the tooling is poor.

[0050] In view of this, as Figures 1-7As shown, in a first aspect, an embodiment of the present application provides a bench test device, including: a fixing device 10, including a tie rod structure 11, a swing arm structure 12 and a shock absorber structure 13. The tie rod structure 11 is connected to a first working position of a test piece 70 to be tested. The swing arm structure 12 is connected to a second working position of the test piece 70 to be tested. The shock absorber structure 13 is connected to a third working position of the test piece 70 to be tested or connected to the swing arm structure 12; a loading device 20, which is connected to a fourth working position of the test piece 70 to be tested, and the loading device 20 is configured with at least one interface working position for loading tests of at least one of lateral force, longitudinal force, braking force or vertical force.

[0051] Exemplarily, the bench test device is used to test the fatigue performance and strength of the test piece 70 to be tested. The test piece 70 to be tested includes, but is not limited to, a steering knuckle. The function of the fixing device 10 is to simulate the installation of the steering knuckle in the actual vehicle state. The tie rod structure 11, the swing arm structure 12 and the shock absorber structure 13 are all fixed to the ground. The function of the loading device 20 is to apply and transfer the load to the steering knuckle.

[0052] Specifically, the function of the tie rod structure 11 is to simulate tie rods and other rods in the suspension, such as rods in a multi-link suspension. One end of these rods is connected to the steering knuckle through a ball joint or a bushing, and the other end is connected to the steering gear or the vehicle frame through a ball joint or a bushing. During the test, the tie rod structure 11 can be used to replace these rods in the actual vehicle, and the tie rod structure 11 is connected to the steering knuckle by means of a ball joint connection, and the relative position of the ball joint and the steering knuckle is maintained in the relative position relationship under the specified load state of the actual vehicle, so as to ensure that the force exerted by the tie rod structure 11 on the steering knuckle is consistent with that in the actual vehicle state.

[0053] The function of the swing arm structure 12 is to simulate the swing arm in the suspension, such as the lower swing arm in a MacPherson suspension, the upper swing arm and the lower swing arm in a double-wishbone suspension. In the actual vehicle state, one end of these swing arms is connected to the steering knuckle through a ball joint, and the other end is connected to the vehicle frame through two bushings.

[0054] The function of the shock absorber structure 13 is to simulate the shock absorber in the suspension, including a coil spring shock absorber and an air spring shock absorber. In the suspension, the bottom end of the shock absorber is connected to the swing arm or the steering knuckle, and the connection methods include bushing connection and fixed connection. The top end of the shock absorber is connected to the vehicle body through a top mount connection.

[0055] In the above-mentioned implementation process, the pull rod structure 11, the swing arm structure 12 and the shock absorber structure 13 can all be connected to the test piece 70, and the fourth workstation of the test piece 70 is also connected to the loading device 20, so as to simulate the constraint of the test piece 70 during use by applying lateral force, longitudinal force, braking force or vertical force to the loading device 20, ensure that the force applied to the test piece 70 is consistent with the actual situation, and complete the test of the test piece.

[0056] like Figure 1 As shown, the tie rod structure 11 includes a tie rod shaft 110, a tie rod tube 111, a tie rod ball joint 112 and a tie rod base 113. One end of the tie rod shaft 110 is connected to the tie rod tube 111, and the other end is connected to the test piece 70, for example, through a ball joint. The tie rod ball joint 112 is connected to the side of the tie rod tube 111 away from the tie rod shaft 110, and the tie rod base 113 is connected to the tie rod ball joint 112.

[0057] In the above implementation process, the tie rod shaft 110, the tie rod tube 111, the tie rod ball joint 112 and the tie rod base 113 are connected respectively, which can be used to simulate the steering rod and other rods in the suspension, such as the rods in the multi-link suspension, so as to ensure that the force exerted by the tie rod structure 11 on the test piece 70 is consistent with its actual usage state, which is conducive to the testing of the test piece 70.

[0058] In some embodiments, the connection position between the rod shaft 110 and the rod tube 111 is adjustable. For example, the rod shaft 110 and the rod tube 111 are connected by threads. By screwing different thread lengths, the length of the rod structure 11 can be adjusted, and the rod shaft 110 and the rod tube 111 are prevented from relative rotation during the test by a nut. At the same time, in order to strengthen the radial fit between the rod shaft 110 and the rod tube 111, a section length can be set within the length of the fit between the rod tube 111 and the rod shaft 110 to maintain a very small fit clearance between the rod shaft 110 and the inner hole of the rod tube 111. Through the fit between this section of the shaft and the hole, no obvious radial displacement occurs between the rod shaft 110 and the rod tube 111. By adjusting the connection position between the rod shaft 110 and the rod tube 111, the length of the rod structure 11 is adjusted, thereby achieving the purpose of simulating rods of different lengths.

[0059] like Figures 1-2As shown, the swing arm structure 12 includes a swing arm mounting block 120, a first swing arm component 121 and a second swing arm component 122. The swing arm mounting block 120 is connected to the test piece 70. For example, the swing arm mounting block 120 is connected to the test piece 70 through a ball joint. The first swing arm component 121 and the second swing arm component 122 are both connected to the swing arm mounting block 120 so that the first swing arm component 121 and the second swing arm component 122 form a preset angle.

[0060] In the above implementation process, the first swing arm assembly 121 and the second swing arm assembly 122 are both connected to the swing arm mounting block 120, which is used to simulate the swing arm in the suspension, such as the lower swing arm in the McPherson suspension, the upper swing arm and the lower swing arm in the double wishbone suspension, so as to ensure that the force exerted by the swing arm structure 12 on the test piece 70 is consistent with its actual usage state, which is conducive to the testing of the test piece 70.

[0061] In some embodiments, the first swing arm assembly 121 includes a first swing arm shaft 1210, a first swing arm tube 1211, a swing arm ball joint 1212 and a first swing arm base 1213, one end of the first swing arm shaft 1210 is connected to the swing arm mounting block 120, and the other end thereof is connected to the first swing arm tube 1211, the swing arm ball joint 1212 is connected to the side of the first swing arm tube 1211 away from the first swing arm shaft 1210, and the first swing arm base 1213 is connected to the swing arm ball joint 1212.

[0062] In the above-mentioned implementation process, the first swing arm shaft 1210, the first swing arm tube 1211, the swing arm ball joint 1212 and the first swing arm base 1213 are connected to each other to simulate the swing arm in the suspension, which can ensure that the force exerted by the swing arm structure 12 on the test piece 70 is consistent with its actual usage state, which is conducive to the testing of the test piece 70.

[0063] In some embodiments, the connection position between the first swing arm shaft 1210 and the first swing arm tube 1211 is adjustable, and the adjustment principle is the same as the position adjustment principle of the pull rod shaft 110 and the pull rod tube 111. By adjusting the connection position between the first swing arm shaft 1210 and the first swing arm tube 1211, the length of the first swing arm assembly 121 can be adjusted, thereby achieving the purpose of simulating swing arms of different lengths.

[0064] Please refer to Figure 2, the second swing arm assembly 122 includes a rotating pair 1222, a second swing arm shaft 1220, a second swing arm cylinder 1221, a swing arm universal joint 1223 and a second swing arm base 1224. The rotating pair 1222 connects to the swing arm mounting block 120. One end of the second swing arm shaft 1220 connects to the rotating pair 1222. The angle between the first swing arm shaft 1210 and the second swing arm shaft 1220 can be adjusted through the rotating pair 1222. According to the actual vehicle swing arm size, the lengths of the first swing arm assembly 121 and the second swing arm assembly 122 and the angle between the first swing arm shaft 1210 and the second swing arm shaft 1220 are adjusted, so that the relative positions among the actual vehicle ball joint, the swing arm ball joint 1212 and the universal joint are the same as the relative positions between the ball joint of the actual vehicle swing arm and the two bushings, achieving the purpose of simulating swing arms of different models. The other end of the second swing arm shaft 1220 connects to the second swing arm cylinder 1221. The swing arm universal joint 1223 connects to the side of the second swing arm cylinder 1221 away from the second swing arm shaft 1220. The second swing arm base 1224 connects to the swing arm universal joint 1223. The function of the swing arm universal joint 1223 is the same as that of the ball joint, only restricting the relative displacement between the first swing arm cylinder 1211 and the first swing arm base 1213 and between the second swing arm cylinder 1221 and the second swing arm base 1224, and releasing the freedom degree of their relative rotation.

[0065] In the above implementation process, the rotating pair 1222, the second swing arm shaft 1220, the second swing arm cylinder 1221, the swing arm universal joint 1223 and the second swing arm base 1224 are connected to each other to simulate the swing arm in the suspension, which can ensure that the force exerted by the swing arm structure 12 on the test piece 70 is consistent with its actual use state, facilitating the test of the test piece 70.

[0066] In some embodiments, the connection position between the second swing arm shaft 1220 and the second swing arm cylinder 1221 is adjustable, and its adjustment principle is the same as that of the position adjustment between the pull rod shaft 110 and the pull rod cylinder 111. By adjusting the connection position between the second swing arm shaft 1220 and the second swing arm cylinder 1221, the length adjustment of the second swing arm assembly 122 is achieved, achieving the purpose of simulating swing arms of different lengths.

[0067] Please refer to again Figure 1 , the shock absorber structure 13 includes a shock absorber shaft 130, a shock absorber cylinder 131, a shock absorber ball joint 132 and a shock absorber base 133. One end of the shock absorber shaft 130 connects to the test piece 70, and the other end connects to the shock absorber cylinder 131. The shock absorber ball joint 132 connects to the side of the shock absorber cylinder 131 away from the shock absorber shaft 130. The shock absorber base 133 connects to the shock absorber ball joint 132, and the shock absorber base 133 is fixed to the ground.

[0068] In the above implementation process, the shock absorber shaft 130, the shock absorber cylinder 131, the shock absorber ball joint 132 and the shock absorber base 133 are connected to each other to simulate the shock absorber in the suspension, which can ensure that the force exerted by the shock absorber structure 13 on the test piece 70 is consistent with its actual use state, facilitating the test of the test piece 70.

[0069] In some embodiments, the connection position between the shock absorber shaft 130 and the shock absorber cylinder 131 is adjustable, and its adjustment principle is the same as that of the position adjustment of the pull rod shaft 110 and the pull rod cylinder 111. By adjusting the connection position between the shock absorber shaft 130 and the shock absorber cylinder 131, the length adjustment of the shock absorber structure 13 is achieved, so as to simulate shock absorbers of different lengths.

[0070] As Figure 4 shown, when performing the lateral force loading test, the loading device 20 is configured with a first interface 21 and a second interface 22. The bench test equipment further includes a connecting frame 30, a lateral oil cylinder 31, a lateral connecting rod 32 and a lateral base 33. The connecting frame 30 includes but is not limited to a gantry. The lateral oil cylinder 31 is respectively ball-jointed to the first interface 21 and the connecting frame 30, and the lateral connecting rod 32 is respectively ball-jointed to the second interface 22 and the lateral base 33. Wherein the loading device 20 is a simulated tire, and the lateral connecting rod 32 and the lateral base 33 are used for auxiliary restraint, and the function of this auxiliary restraint is to prevent the simulated tire from rotating around the axis of the hub bearing during the loading process.

[0071] In the above implementation process, the lateral oil cylinder 31 is connected to the first interface 21, the lateral connecting rod 32 is connected to the second interface 22, and the loading device 20 is connected to the test piece 70. When the lateral force is provided by the lateral oil cylinder 31, the lateral force acts on the hub bearing installed on the test piece 70 through the simulated tire, and then is transmitted to the test piece 70, the pull rod structure 11, the swing arm structure 12 and the shock absorber structure 13, and finally transmitted to the ground, realizing the lateral force loading test of the test piece 70.

[0072] As Figure 5 shown, when performing the longitudinal force loading test, the loading device 20 is further configured with a third interface 23. The bench test equipment further includes a first longitudinal base 40, a longitudinal oil cylinder 41, a longitudinal connecting rod 42 and a second longitudinal base .....

[0073] It seems there is an incomplete sentence in the original for item . I've translated as much as possible based on the provided text. If you can correct or complete the original, I can provide a more accurate translation.In the above-mentioned implementation process, the longitudinal cylinder 41 is connected to the third interface 23, the longitudinal connecting rod 42 is connected to the second interface 22, and the loading device 20 is connected to the test piece 70, so that when the longitudinal force is provided by the longitudinal cylinder 41, the lateral force acts on the hub bearing installed on the test piece 70 through the simulated tire, and then is transmitted to the test piece 70, the pull rod structure 11, the swing arm structure 12 and the shock absorber structure 13, and finally delivered to the ground, thereby realizing the loading test of the longitudinal force of the test piece 70.

[0074] like Figure 6 As shown, when the braking force loading test is carried out, the bench test equipment also includes a brake cylinder 50 and a brake base 51, and the brake cylinder 50 is respectively connected to the brake base 51 and the second interface 22 by a ball joint; wherein the brake base 51 is fixed on the iron flat floor of the test room, and the loading device 20 is a simulated tire.

[0075] In the above-mentioned implementation process, the brake cylinder 50 is connected to the second interface 22, and the loading device 20 is connected to the test piece 70, so that when the braking force is provided by the brake cylinder 50, the braking force is not only transmitted to the test piece 70 through the simulated tire and the hub bearing, but also transmitted to the caliper mounting hole of the test piece 70 through the simulated tire, thereby realizing a loading test of the braking force of the test piece 70.

[0076] like Figure 7 As shown, when the vertical force loading test is performed, the loading device 20 is also configured with a fourth interface 24, and the bench test equipment also includes a vertical cylinder 60 and a vertical base 61, and the vertical cylinder 60 is respectively connected to the vertical base 61 and the fourth interface 24 by a ball joint.

[0077] It should be noted that the positions of the first interface 21, the second interface 22, the third interface 23 and the fourth interface 24 follow certain principles. For example, the interface for lateral force and the interface for braking force can ensure that the line of action of the force passes through the tire grounding point. The interface for vertical force can be set at the upper end of the loading device 20 so that the line of action of the vertical force passes through the center of the tire, or the interface for vertical force is set at the lower end of the loading device 20 so that the line of action of the vertical force passes through the tire grounding point. The interface for longitudinal force makes the line of action of the longitudinal force pass through the center of the tire.

[0078] In the above-mentioned implementation process, the vertical cylinder 60 is connected to the fourth interface 24, and the loading device 20 is connected to the test piece 70, so that when the vertical force is provided by the vertical cylinder 60, it can be used to simulate the tire installed on the hub bearing of the test piece 70, and finally the simulated tire rotational torque generated by the vertical force is transmitted to the test piece 70, thereby realizing the vertical force loading test of the test piece 70.

[0079] In all embodiments of the present application, "large" and "small" are relative, "many" and "few" are relative, and "up" and "down" are relative. Regarding the expression of such relative terms, the embodiments of the present application will not elaborate further.

[0080] It should be understood that the "in this embodiment", "in the embodiments of the present application", or "as an optional implementation manner" mentioned throughout the specification means that the specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the "in this embodiment", "in the embodiments of the present application", or "as an optional implementation manner" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0081] In various embodiments of the present application, it should be understood that the magnitudes of the serial numbers of the above processes do not necessarily mean the inevitable sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0082] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A bench test equipment, characterized in that: include: A fixing device, comprising a pull rod structure, a swing arm structure and a shock absorber structure, wherein the pull rod structure is connected to a first station of the test piece, the swing arm structure is connected to a second station of the test piece, and the shock absorber structure is connected to a third station of the test piece or to the swing arm structure; A loading device is connected to the fourth station of the test piece, and the loading device is configured with at least one interface station for loading test of at least one of lateral force, longitudinal force, braking force or vertical force.

2. The bench test equipment according to claim 1, characterized in that: The tie rod structure includes a tie rod shaft, a tie rod tube, a tie rod ball joint and a tie rod base. One end of the tie rod shaft is connected to the tie rod tube, and the other end is connected to the test piece. The tie rod ball joint is connected to the side of the tie rod tube away from the tie rod shaft, and the tie rod base is connected to the tie rod ball joint.

3. The bench test equipment according to claim 2, characterized in that: The connection position between the pull rod shaft and the pull rod tube is adjustable.

4. The bench test equipment according to claim 1, characterized in that: The swing arm structure includes a swing arm mounting block, a first swing arm assembly and a second swing arm assembly. The swing arm mounting block is connected to the test piece. The first swing arm assembly and the second swing arm assembly are both connected to the swing arm mounting block so that the first swing arm assembly and the second swing arm assembly form a preset angle.

5. The bench test equipment according to claim 4, characterized in that: The first swing arm assembly includes a first swing arm shaft, a first swing arm tube, a swing arm ball joint and a first swing arm base. One end of the first swing arm shaft is connected to the swing arm mounting block, and the other end thereof is connected to the first swing arm tube. The swing arm ball joint is connected to the side of the first swing arm tube away from the first swing arm shaft, and the first swing arm base is connected to the swing arm ball joint.

6. The bench test equipment according to claim 5, characterized in that: The connection position between the first swing arm shaft and the first swing arm tube is adjustable.

7. The bench test equipment according to claim 6, characterized in that: The second swing arm assembly includes a revolving pair, a second swing arm shaft, a second swing arm tube, a swing arm universal joint and a second swing arm base. The revolving pair is connected to the swing arm mounting block, one end of the second swing arm shaft is connected to the revolving pair, and the other end thereof is connected to the second swing arm tube, the swing arm universal joint is connected to the side of the second swing arm tube away from the second swing arm shaft, and the second swing arm base is connected to the swing arm universal joint.

8. The bench test equipment according to claim 7, characterized in that: The connection position between the second swing arm shaft and the second swing arm tube is adjustable.

9. The bench test equipment according to claim 1, characterized in that: The shock absorber structure includes a shock absorber shaft, a shock absorber cylinder, a shock absorber ball joint and a shock absorber base. One end of the shock absorber shaft is connected to the test piece, and the other end is connected to the shock absorber cylinder. The shock absorber ball joint is connected to the side of the shock absorber cylinder facing away from the shock absorber shaft, and the shock absorber base is connected to the shock absorber ball joint.

10. The bench test equipment according to claim 9, characterized in that: The connection position between the shock absorber shaft and the shock absorber cylinder is adjustable.

11. The bench test equipment according to claim 1 or 3 or 8 or 10, characterized in that: When conducting the lateral force loading test, the loading device is configured with a first interface and a second interface, and the bench test equipment also includes a connecting frame, a lateral oil cylinder, a lateral connecting rod and a lateral base. The lateral oil cylinder is respectively connected to the first interface and the connecting frame by a ball joint, and the lateral connecting rod is respectively connected to the second interface and the lateral base by a ball joint.

12. The bench test equipment according to claim 11, characterized in that: When conducting the longitudinal force loading test, the loading device is also configured with a third interface, and the bench test equipment also includes a first longitudinal base, a longitudinal oil cylinder, a longitudinal connecting rod and a second longitudinal base. The longitudinal oil cylinder is respectively connected to the first longitudinal base and the third interface by a ball joint, and the longitudinal connecting rod is respectively connected to the second longitudinal base and the second interface by a ball joint.

13. The bench test equipment according to claim 12, characterized in that: When performing the braking force loading test, the bench test equipment further includes a brake oil cylinder and a brake base, and the brake oil cylinder is respectively connected to the brake base and the second interface through a ball joint.

14. The bench test equipment according to claim 13, characterized in that: When performing the vertical force loading test, the loading device is further configured with a fourth interface, and the bench test equipment also includes a vertical oil cylinder and a vertical base, and the vertical oil cylinder is respectively connected to the vertical base and the fourth interface by a ball joint.

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