Suspension test mechanism

Abstract

The present invention relates to a suspension test system, comprising: a fixing device, which is installed on a mounting base and used to install a suspension to be tested; a loading device, which is installed on the mounting base and spaced apart from the fixing device, wherein the suspension has a load-bearing portion at both ends in its longitudinal direction, and the loading device is used to be connected to the two load-bearing portions, and the loading device is constructed to simultaneously apply a load to each end in one or more directions of a first direction, a second direction, and a third direction. The above-mentioned suspension test mechanism can not only realize the load loading of the end of the suspension in three unilateral directions, namely, longitudinal, lateral, and vertical, but also simulate the load loading of the end of the suspension under complex conditions such as vehicle braking, turning, and roll by simultaneously applying loads in multiple directions, so as to maximize the simulation of the load situation of the suspension in the actual vehicle driving process, so as to improve the accuracy of the durability performance test of the suspension.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle manufacturing, in particular to a suspension testing mechanism. Background Art

[0002] In the automotive industry, reliability is one of the important indicators for measuring vehicle performance. According to incomplete statistics, at least 90% of the damage to automobile parts is caused by fatigue damage. During the automotive R&D stage, it is necessary to predict, optimize, and verify the fatigue life of the vehicle to ensure that the vehicle structure design can meet the requirements of no fatigue damage within a reasonable life span.

[0003] The suspension is one of the important components of the vehicle, with multiple functions such as load-bearing, guiding and shock absorption. Therefore, the fatigue performance of the suspension is crucial to the overall technical performance and safety performance of the vehicle. Therefore, during the development process of the suspension, it is necessary to conduct road simulation tests on the suspension to verify the durability of the suspension.

[0004] However, the existing road simulation test method of the suspension mainly applies a unidirectional load to the suspension through a linear actuator, which cannot simulate the load that the suspension is subjected to when the vehicle is actually driving, thereby causing distortion of the test results and failing to truly play the role of detecting the durability of the suspension. Summary of the invention

[0005] Based on this, it is necessary to provide a suspension test mechanism that improves the above defects in order to address the problem that the existing suspension road simulation test method cannot simulate the load on the suspension when the actual vehicle is driving.

[0006] A suspension test system, characterized in that the suspension system test mechanism comprises:

[0007] A fixture, mounted on the mounting base and used to mount the suspension to be tested;

[0008] A loading device, mounted on the mounting base and connected to two ends of the suspension in the longitudinal direction, the loading device being configured to simultaneously apply a load to each of the ends in one or more of a first direction, a second direction and a third direction;

[0009] The first direction is parallel to the longitudinal direction of the suspension, the second direction intersects with the first direction, and the third direction intersects with both the first direction and the second direction.

[0010] In one embodiment, the load applied by the loading mechanism to each of the end portions includes: three lateral loads parallel to the first direction, two longitudinal loads parallel to the second direction, and one longitudinal load parallel to the third direction.

[0011] In one embodiment, the loading mechanism includes a mounting seat and twelve actuators that can be extended and retracted along the longitudinal direction of the mounting seat. The mounting seat is installed on the mounting base. One end of each actuator is connected to the mounting seat, and the other end is connected to one of the end portions, and provides a load in one direction for the end portion.

[0012] In one embodiment, the twelve actuators include six transverse actuators, and every three transverse actuators are connected to one of the ends and provide three transverse loads to the end;

[0013] The three transverse actuators connected to each end are arranged around the circumference of the end, and two of the transverse actuators are respectively located on both sides of the end in the first direction, and another transverse actuator is located between the remaining two transverse actuators.

[0014] In one embodiment, the twelve actuators include four vertical actuators, and every two vertical actuators are connected to one of the ends and provide two vertical loads for the end;

[0015] Wherein, the two vertical actuators connected to each of the end portions are respectively arranged on both sides of the end portion in the first direction.

[0016] In one embodiment, the loading mechanism further comprises two adapters and a plurality of fasteners, the suspension comprises an axle and two wheel hubs, the axle extends longitudinally along a first direction and is connected to the fixing device, and each of the wheel hubs is respectively mounted on two ends of the axle in the first direction;

[0017] The two adapters correspond to the two wheel hubs, each of the adapters is connected to the six actuators and is connected to the corresponding wheel hubs through a plurality of fasteners, and the plurality of fasteners are circumferentially arranged around the axis of the wheel hub.

[0018] In one embodiment, each of the actuator balls is connected to the mounting seat or the adapter.

[0019] In one embodiment, one or more of the actuators include an actuating member and an extension member that can be extended and retracted along the longitudinal direction of the actuating member, one end of the actuating member is connected to one end of the extension member, and the other end is connected to one of the end and the mounting seat, and the other of the end or the mounting seat is connected to the other end of the extension member.

[0020] In one embodiment, the suspension includes an axle extending longitudinally along a first direction and a connecting member, and both ends of the axle in the first direction are respectively connected to the loading device;

[0021] One end of the connecting member is connected to the axle, and the other end is connected to the fixing device.

[0022] In one embodiment, the fixing device includes a fixing body installed on the mounting base and a fixing block installed on the fixing body, the position of the fixing block relative to the fixing body in the second direction and the third direction is adjustable, and the end of the connecting member facing away from the axle is fixedly connected to the fixing block.

[0023] The suspension test mechanism is constructed such that the loading device can simultaneously apply loads to each end of the suspension in one or more directions of the first direction, the second direction and the third direction. In this way, in addition to being able to load the ends of the suspension in three unilateral directions, namely longitudinal, transverse and vertical, the loads can also be applied in multiple directions simultaneously to simulate the loads on the ends of the suspension under complex conditions such as vehicle braking, turning and roll, so that the loads on the ends of the suspension can be simulated to the greatest extent possible during the actual vehicle driving process, so as to improve the accuracy of the durability performance test of the suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a suspension test mechanism in one embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a suspension in one embodiment of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a loading device in one embodiment of the present invention;

[0027] Figure 4 for Figure 3 An exploded schematic diagram of the lateral actuator in the middle loading device;

[0028] Figure 5 for Figure 3 An exploded schematic diagram of the actuator in the middle loading device;

[0029] Figure 6 for Figure 1 Schematic diagram of the structure of the middle suspension test mechanism where the middle suspension is fixed on the fixing device;

[0030] Figure 7 for Figure 6 Schematic diagram of the structure of the fixing device in the mid-suspension test mechanism;

[0031] Figure 8 for Figure 7 Schematic diagram of the structure of the fixing block in the fixing device.

[0032] Suspension test facility 100;

[0033] Fixing device 10; fixing body 11; fixing block 12; adjustment slot 13;

[0034] Loading device 20; actuator 21; lateral actuator 22; actuator 221; extension member 222; longitudinal actuator 23; vertical actuator 24; adapter 25; adapter body 251; transition member 252; mounting seat 26

[0035] Suspension 30 ; load-bearing part 31 ; axle 33 ; wheel hub 34 ; connecting member 35 ; fastener 36 . DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] See also Figure 1 , Figure 2 and Figure 3 A suspension test mechanism provided by an embodiment of the present invention includes a fixing device 10 and a loading device 20.

[0043] The fixing device 10 is installed on the mounting base and is used to install the suspension 30 to be tested. The loading device 20 is installed on the mounting base and keeps a certain distance from the fixing device 10. Among them, the suspension 30 has a load-bearing part 31 at both ends of its longitudinal direction, and the loading device 20 is used to connect with the two load-bearing parts 31 of the suspension 30. During the operation of the vehicle, in case of bumps or turns, the wheels will be subjected to a certain load, and the load will pass through the wheels and finally act on the suspension 30. To this end, after the suspension 30 is fixed on the fixing device 10, a certain load is applied to the load-bearing part 31 of the suspension through the loading device 20, so as to simulate the situation that the suspension 30 is subjected to load during the driving of the vehicle, and then the durability performance of the suspension 30 can be tested.

[0044] In order to more realistically simulate the loads that the suspension 30 is subjected to during actual use, the loading device 20 is configured to simultaneously apply loads to each load-bearing portion 31 of the suspension 30 in one or more of the first direction, the second direction, and the third direction. In this way, in addition to being able to load the loads on the load-bearing portion 31 of the suspension 30 in three unilateral directions, namely, longitudinal, transverse, and vertical, the loads on the load-bearing portion 31 of the suspension 30 can also be simulated by simultaneously applying loads in multiple directions under complex conditions such as vehicle braking, turning, and rollover. In this way, the loads on the load-bearing portion 31 of the suspension 30 during actual vehicle driving can be simulated to the greatest extent, so as to improve the accuracy of the durability performance test of the suspension 30.

[0045] Specific to Figure 1 In the embodiment, the first direction is direction A, the second direction described below is direction B, and the third direction described below is direction C.

[0046] In the embodiments of the present invention, refer to Figure 1 and Figure 3 The load applied by the loading device 20 to each bearing portion 31 includes: three lateral loads parallel to the first direction, two vertical loads parallel to the second direction, and one longitudinal load parallel to the third direction.

[0047] When a lateral, longitudinal or vertical load needs to be applied to the bearing portion 31 , it is only necessary to select the corresponding lateral load, longitudinal load or vertical load.

[0048] When it is necessary to simulate the load on the bearing portion 31 when the vehicle turns, the three lateral loads can be used for simulation. Specifically, by adjusting the magnitudes of the three lateral loads, the bearing portion 31 is subjected to three lateral loads of different magnitudes, thereby simulating the load on the bearing portion 31 when the vehicle turns and the wheels deviate toward the inside or outside of the vehicle.

[0049] When it is necessary to simulate the braking of a vehicle, since the wheels will be subjected to the inertia force from the vehicle body and the friction force from the ground when the vehicle is braking, the load on the bearing portion 31 when the vehicle is braking can be simulated by applying a vertical load and a longitudinal load at the same time.

[0050] When it is necessary to simulate the vehicle rolling, since the weight of the vehicle will be concentrated on one of the wheels when the vehicle rolls, the two bearing parts 31 are subjected to vertical loads of different sizes to simulate the load on the bearing part 31 when the vehicle is braking.

[0051] In some embodiments, in order to provide a load to the load-bearing portion 31 of the suspension 30, the loading device 20 includes a mounting seat 26 and at least one actuator 21 that can be extended and retracted along its longitudinal direction. The mounting seat 26 is installed on the mounting base, one end of the actuator 21 is connected to the mounting seat 26, and the other end is connected to one of the load-bearing portions 31, so that a load in one direction can be provided to the load-bearing portion 31 by extending and retracting one actuator 21.

[0052] In order to provide the above-mentioned lateral load, longitudinal load and vertical load on each load-bearing portion 31, the loading device 20 includes twelve actuators 21. Each load-bearing portion 31 of the suspension 30 is connected to six actuators 21 to provide the above-mentioned three lateral loads, two vertical loads and one longitudinal load through the six actuators 21.

[0053] Specifically in the embodiment, in order to provide three lateral loads for each bearing portion 31 , the twelve actuators 21 include six lateral actuators 22 , and every three lateral actuators 22 are connected to one of the bearing portions 31 to provide three lateral loads for the bearing portion 31 .

[0054] In order to further improve the reliability of the simulation experiment of the suspension 30, three lateral actors 22 connected to each load-bearing portion 31 are arranged around the circumference of the load-bearing portion 31, and two of the lateral actors 22 are respectively located on both sides of the load-bearing portion 31 in the first direction. In this way, the load on the load-bearing portion 31 of the suspension 30 when the vehicle turns can be simulated by the two lateral actors 22 located on both sides of the load-bearing portion 31.

[0055] Specifically, the loads applied by the two lateral actuators 22 on both sides of the load-bearing portion 31 are inconsistent, so that when the vehicle turns, the loads on the left and right sides of the load-bearing portion 31 are inconsistent. Another lateral actuator 22 is located between the two lateral actuators 22 to simulate the situation that when the vehicle turns, the friction force on the bottom of the wheel is transmitted to the load-bearing portion 31.

[0056] Specifically in the embodiment, in order to provide two vertical loads for each bearing portion 31 , the twelve actuators 21 include four vertical actuators 24 , and every two vertical actuators 24 are connected to one of the bearing portions 31 and provide two vertical loads for the bearing portion 31 .

[0057] Among them, the two vertical actuators 24 connected to each load-bearing part 31 are respectively arranged on both sides of the load-bearing part 31 in the first direction, so that different loads are applied to the two sides of the load-bearing part 31 in the suspension 30 through the two vertical actuators 24, thereby simulating the situation where the loads on both sides of the load-bearing part 31 are inconsistent when the vehicle is braking.

[0058] Specifically in the embodiment, in order to provide a longitudinal load for each bearing portion 31 , the twelve actuators 21 further include two longitudinal actuators 23 , each of which is connected to one of the bearing portions 31 and provides a longitudinal load for the bearing portion 31 .

[0059] In some embodiments, see Figure 3 and Figure 4 In order to apply the load on the load-bearing part 31 of the suspension 30 more evenly, the loading device 20 also includes an adapter 25 and a plurality of fasteners 36. The suspension 30 includes an axle 33 and two wheel hubs 34. The axle 33 is longitudinally extended along a first direction and is connected to the fixing device 10. Each wheel hub 34 is installed on both ends of the axle 33 in the first direction and serves as the load-bearing part 31 of the suspension 30.

[0060] Among them, two adapters 25 correspond to two wheel hubs 34, each adapter 25 is connected to six actuators 21, and is connected to the corresponding wheel hub 34 through a plurality of fasteners 36 arranged circumferentially around the axis of the wheel hub 34. In order to simulate the load on the suspension 30 during vehicle movement as realistically as possible, the connection method between the adapter 25 and the wheel hub 34 is the same as the connection method between the wheel and the wheel hub 34, so that the load of the actuator 21 on the adapter 25 is equivalent to the load of the wheel during vehicle operation, so that the load transferred to the wheel hub 34 by the adapter 25 can be equivalent to the load transferred to the wheel hub 34 by the wheel.

[0061] Specifically in the embodiment, different types of suspensions 30 result in different hubs 34 of suspensions 30, and for this reason, the adapter 25 includes an adapter body 251 and a transition piece 252. The adapter body 251 is connected to the six actuators 21 and can be detachably connected to the transition piece 252, and the transition piece 252 is connected to the hub 34 of the suspension 30 through a plurality of fasteners 36. In this way, when it is necessary to test different types of suspensions 30, it is only necessary to replace the transition piece 252 with a type corresponding to the suspension 30, without replacing the adapter body 251, and without disassembling the adapter 25 and the actuator 21, saving time and effort.

[0062] Specifically in the embodiment, when one of the actuators 21 is actuated, the adapter 25 will be driven to move, and other actuators 21 connected to the adapter 25 will also move together. During the movement of other actuators 21, since the movement of the actuator 21 is not an extension and contraction along its own longitudinal direction, the actuator 21 will rotate relative to the mounting seat 26 during the movement, which may cause the actuator 21 to generate a bending moment, and then cause the actuator 21 to malfunction.

[0063] To this end, each actuator 21 is ball-connected to the mounting seat 26 or the adapter 25, so that even if the actuator 21 rotates relative to the mounting seat 26 during the following movement, it can be adjusted by ball connection to ensure that the actuator 21 is not subjected to bending moment, thereby ensuring the normal operation of the actuator 21.

[0064] For details in the embodiments, see Figure 5 In order to reduce the rotation range of the actuator 21 relative to the mounting seat 26, one or more actuators 21 include an actuator 221 and an extension member 222 that can be extended along their own longitudinal direction, one end of the actuator is connected to one end of the extension member 222, and the other end is connected to one of the bearing part 31 and the mounting seat 26, and the other end of the bearing part 31 and the mounting seat 26 is connected to the other end of the extension member 222.

[0065] In actual use, when one end of one of the actuators 21 moves with the other actuators 21, the other end of the actuator 21 will rotate relative to the mounting seat 26. If the length of the actuator 21 is increased, the rotation range of the other end of the actuator 21 relative to the mounting seat 26 will be reduced, and the bending moment of the actuator 21 as a whole will be reduced accordingly. In this way, the length of the actuator 21 is increased by the extension piece 222, so that the bending moment of the actuator 21 during the follow-up movement will be reduced, thereby further ensuring the normal operation of the actuator 21.

[0066] In the embodiments of the present invention, refer to Figure 6 , Figure 7 and Figure 8 In addition to the axle 33 and the hubs 34 at both ends of the axle 33, the suspension 30 also includes a connector 35. In actual use, the axle 33 is connected to the vehicle frame through the connector 35. The load transmitted by the wheel will not only act on the axle 33, but also on the connector 35 located between the axle 33 and the frame. Therefore, in the durability test of the suspension 30, the durability of the connector 35 also needs to be tested.

[0067] To this end, on the basis that both ends of the axle 33 are connected to the loading device 20, one end of the connecting member 35 is connected to the axle 33, and the other end is connected to the fixing device 10, so that the connecting member 35 can also be subjected to the load from the loading device 20 during the test, thereby testing the durability of the connecting member 35.

[0068] In some embodiments, due to the inconsistency of the lengths of the various components in the connecting member 35, they cannot be uniformly fixed on the fixing device 10. To this end, the fixing device 10 includes a fixing body 11 installed on a mounting base and a fixing block 12 installed on the fixing body 11. The position of the fixing block 12 relative to the fixing body 11 in the second direction and the third direction is adjustable.

[0069] In this way, by adjusting the position of the fixing block 12 relative to the fixing body 11 , the fixing block 12 can be adjusted to a position suitable for fixing with the connecting member 35 , so that the fixing device 10 can be adapted to different connecting members 35 .

[0070] Specifically in the embodiment, an adjustment groove 13 extending longitudinally along a third direction is provided on the fixed body 11, and the fixed block 12 is movably provided on the fixed body 11 along the adjustment groove 13, so that the position of the fixed block 12 relative to the fixed body 11 can be adjusted by moving the fixed block 12 on the adjustment groove 13.

[0071] Furthermore, the adjustment slots 13 include a plurality of adjustment slots 13, all of which are arranged on the fixed body 11 at intervals along the second direction, and the fixed block 12 can be selectively installed on any one or more of the adjustment slots 13. In this way, the position of the fixed block 12 relative to the fixed body 11 can be adjusted by installing the fixed block 12 on different adjustment slots 13.

[0072] Optionally, the connecting member 35 is a component of the suspension 30 such as a stabilizer arm, a stabilizer bar, a shock absorber, etc., which is used to connect the axle 33 and the frame.

[0073] The above suspension test mechanism 100 has at least the following advantages:

[0074] The loading device 20 is configured to apply loads to each load-bearing portion 31 of the suspension 30 in one or more directions of the first direction, the second direction and the third direction at the same time. In this way, in addition to being able to load the loads on the load-bearing portion 31 of the suspension 30 in three unilateral directions, namely, longitudinal, lateral and vertical, the loads on the load-bearing portion 31 of the suspension 30 can also be simulated by applying loads in multiple directions at the same time to simulate the loads on the load-bearing portion 31 of the suspension 30 under complex conditions such as vehicle braking, turning and roll, so that the loads on the load-bearing portion 31 of the suspension 30 can be simulated to the greatest extent in the actual vehicle driving process, so as to improve the accuracy of the durability performance test of the suspension 30.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A suspension test mechanism, characterized in that: The suspension test mechanism comprises: A fixture (10) mounted on a mounting base and used for mounting a suspension (30) to be tested; A loading device (20) is installed on the installation base and spaced apart from the fixing device (10); the suspension (30) has bearing parts (31) at both ends in its longitudinal direction; the loading device (20) is used to connect to the two bearing parts (31); the loading device (20) is configured to simultaneously apply a load to each of the bearing parts (31) in one or more of a first direction, a second direction and a third direction; Wherein, the first direction is parallel to the longitudinal direction of the suspension (30), the second direction intersects with the first direction, and the third direction intersects with both the first direction and the second direction; The load applied by the loading device (20) to each of the bearing parts (31) includes: three transverse loads parallel to the first direction, two vertical loads parallel to the second direction, and one longitudinal load parallel to the third direction; The loading device (20) comprises a mounting seat (26) and at least one actuator (21) that can be extended and retracted along its longitudinal direction, the mounting seat (26) being mounted on the mounting base, one end of each actuator (21) being connected to the mounting seat (26), and the other end being connected to one of the bearing parts (31), and providing a load in one direction to the bearing part (31); The loading device (20) further comprises two adapters (25) and a plurality of fasteners (36); the suspension (30) comprises an axle (33) and two wheel hubs (34); the axle (33) extends longitudinally along the first direction and is connected to the fixing device (10); each wheel hub (34) is respectively mounted on two ends of the axle (33) in the first direction and serves as the bearing portion (31) of the suspension (30); The two adapters (25) correspond to the two wheel hubs (34); each adapter (25) is connected to the six actuators (21) and is connected to the corresponding wheel hub (34) via a plurality of fasteners (36); the plurality of fasteners (36) are circumferentially arranged around the axis of the wheel hub (34); The suspension (30) comprises an axle (33) extending longitudinally along the first direction and a connecting member (35), and both ends of the axle (33) in the first direction are respectively connected to the loading device (20); One end of the connecting member (35) is connected to the axle (33), and the other end is connected to the fixing device (10); The fixing device (10) comprises a fixing body (11) mounted on the mounting base and a fixing block (12) mounted on the fixing body (11); the position of the fixing block (12) relative to the fixing body (11) in the second direction and the third direction is adjustable; and an end of the connecting member (35) facing away from the axle (33) is fixedly connected to the fixing block (12).

2. The suspension test mechanism according to claim 1, characterized in that: The actuator (21) comprises six transverse actuators (22), and every three transverse actuators (22) are connected to one of the bearing parts (31) and provide three transverse loads for the bearing part (31); The three lateral actuators (22) connected to each of the bearing parts (31) are arranged around the circumference of the bearing part (31), and two of the lateral actuators (22) are respectively located on both sides of the bearing part (31) in the first direction, and another lateral actuator (22) is located between the other two lateral actuators (22).

3. The suspension test mechanism according to claim 1, characterized in that: The actuator (21) comprises four vertical actuators (24), and every two of the vertical actuators (24) are connected to one of the bearing parts (31) and provide two vertical loads for the bearing part (31); Wherein, the two vertical actuators (24) connected to each of the bearing parts (31) are respectively arranged on two sides of the current bearing part (31) in the first direction.

4. The suspension test mechanism according to claim 1, characterized in that: Each of the actuators (21) is ball-connected to the mounting seat (26) or the adapter (25).

5. The suspension test mechanism according to claim 1, characterized in that: One or more of the actuators (21) include an actuator (221) and an extension member (222) that can be extended and retracted along the longitudinal direction of the actuator, one end of the actuator (221) is connected to one end of the extension member (222), and the other end is connected to one of the bearing portion (31) and the mounting seat (26), and the other of the bearing portion (31) and the mounting seat (26) is connected to the other end of the extension member (222).

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