CN215065293U

CN215065293U - Test apparatus and test system

Info

Publication number: CN215065293U
Application number: CN202121268546.7U
Authority: CN
Inventors: 韦仲宁; 余俊群; 刘志勇; 李磊
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-12-07
Anticipated expiration: 2031-06-07

Abstract

The application discloses a test device and a test system. The test equipment comprises a loading device and a supporting plate. The loading device is used for connecting the suspension, a wheel is installed on the suspension, and the loading device is used for applying load to the wheel through the suspension. The support plate includes a support portion and an inclined portion connected to the support portion, the inclined portion being inclined upward from the support portion, the support portion being used to support the wheel, and the inclined portion being used to roll the rolling body on the inclined portion toward the wheel to collide with the wheel. Therefore, the loading device is used for loading the suspension, and the rolling bodies roll towards the wheels at different preset angles to collide the wheels for carrying out strength durable impact, so that the scene of the vehicle when the vehicle is impacted in the running process can be effectively simulated. The working condition of the suspension is detected subsequently, the strength of each part of the suspension is verified in advance, and the suspension is prevented from being broken down to generate accidents when a vehicle is subjected to large external impact.

Description

Test apparatus and test system

Technical Field

The application relates to the field of automobiles, in particular to a test device and a test system.

Background

In the running process of an automobile, the road block can be impacted due to misoperation or other reasons, so that parts on a suspension are cracked, and the cracks can extend and cause the parts to fail in the continuous use process of the automobile, so that potential safety hazards exist. Therefore, in the early stage of research and development, how to perform relevant tests on the suspension to prevent the suspension from suffering from the defects of insufficient strength, such as control arm drop, wheel drop and the like, caused by large external impact during the driving process of the vehicle becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a test device. The test equipment comprises a loading device and a supporting plate. The loading device is used for connecting the suspension, a wheel is installed on the suspension, and the loading device is used for applying load to the wheel through the suspension. The support plate includes a support portion and an inclined portion connected to the support portion, the inclined portion being inclined upward from the support portion, the support portion being used to support the wheel, the inclined portion being used to roll the rolling body on the inclined portion toward the wheel to collide with the wheel.

In certain embodiments, the test apparatus comprises a first upright, the support plate being mounted on the first upright.

In some embodiments, the support portion is provided with a raised plate on which the wheel is supported.

In some embodiments, the number of the inclined portions is two, and the two inclined portions are respectively connected to opposite sides of the supporting portion.

In some embodiments, the two support portions can enable the rolling element to roll towards the wheel along different preset angles, and the preset angle is an included angle between the axial direction of the wheel and a rolling axis of the rolling element.

In certain embodiments, the test rig comprises a second column, the loading device being mounted on the second column.

In some embodiments, the loading device comprises an actuator mounted on the second upright and a mount coupled to the actuator, the mount coupled to a shock absorber of the suspension, the actuator configured to apply the load to the wheel through the mount and the shock absorber.

In some embodiments, the actuator and the mounting are connected by a movable articulation member, the mounting being movable relative to the actuator.

In some embodiments, a steering tie bar and a control arm are disposed on the suspension, the testing apparatus includes a first support member and a second support member spaced apart from the first support member, the first support member is connected to the steering tie bar, the second support member is connected to the control arm, and both the first support member and the second support member are spaced apart from the loading device.

Embodiments of the present application provide a testing system comprising a suspension and a testing apparatus of any of the embodiments described above. The test apparatus is connected to the suspension.

In this way, the loading device is used for loading the suspension, and the rolling body rolls towards the wheel at different preset angles to collide with the wheel for carrying out durable impact with strength, so that a scene when the vehicle is impacted in the running process can be effectively simulated. The working condition of the suspension is detected subsequently, the strength of each part of the suspension is verified in advance, and the suspension is prevented from being broken down to generate accidents when a vehicle is subjected to large external impact.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the configuration of a test system according to an embodiment of the present application;

FIG. 2 is a schematic side view of a testing system according to an embodiment of the present application;

FIG. 3 is a schematic view of another embodiment of the test system of the present application;

FIG. 4 is a schematic top view of a test system according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a loading device according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a suspension according to an embodiment of the present application;

FIG. 7 is an enlarged partial schematic view of a test system according to an embodiment of the present application;

FIG. 8 is a schematic structural view of a first support member according to an embodiment of the present application;

fig. 9 is a schematic structural view of a second support member according to an embodiment of the present application.

Description of the main element symbols:

the test system 100, the test apparatus 10, the loading device 11, the actuator 111, the mounting base 112, the movable joint component 113, the support plate 12, the support portion 121, the inclined portion 122, the first inclined portion 1221, the second inclined portion 1222, the rolling body 13, the rolling axis 131, the first upright post 14, the boss plate 15, the second upright post 16, the chute structure 161, the first support member 17, the first connection member 171, the first movable member 172, the first support base 173, the second support member 18, the second connection member 181, the second movable member 182, the second support base 183, the suspension 20, the wheel 21, the shock absorber 22, the tie rod 23, the control arm 24, the brake 25, and the knuckle 26.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, the present application provides a test apparatus 10. The test apparatus 10 includes a loading device 11 and a support plate 12. The loading device 11 is used for connecting a suspension 20, a wheel 21 is installed on the suspension 20, and the loading device 11 is used for applying load to the wheel 21 through the suspension 20. The support plate 12 includes a support portion 121 and an inclined portion 122, and the inclined portion 122 is connected to the support portion 121. The inclined portion 122 is inclined upward from the support portion 121, the support portion 121 is used to support the wheel 21, and the inclined portion 122 is used to roll the rolling bodies 13 on the inclined portion 122 toward the wheel 21 to collide against the wheel 21.

The test apparatus 10 according to the embodiment of the present application can effectively simulate a scene when a vehicle is impacted by an obstacle while traveling by applying a load to the suspension 20 by the loading device 11 and applying a strong durable impact to the wheel 21 by rolling the rolling element 13. The rolling elements 13 apply strong and durable load excitation to the wheel 21 at the time of rolling impact, and can transmit the strong and durable load excitation to each part of the suspension 20. By detecting the working condition of the suspension 20, the strength and reliability of each part on the suspension 20 are verified in advance, and accidents caused by faults of the suspension 20 when a vehicle is subjected to large external impact are prevented.

Specifically, the suspension 20 is a generic term of a connection device between a vehicle body and a wheel 21 of a vehicle, and the suspension 20 is mainly used for transmitting force and torque acting between the wheel 21 and a vehicle frame, and buffering impact force transmitted to the vehicle body from an uneven road surface, and reducing vibration caused by the impact force, so as to ensure that the vehicle can run smoothly and meet the driving stability of the vehicle. The suspension 20 may be a wishbone suspension 20, a multi-link suspension 20, or a torsion beam dependent suspension 20, and is not limited thereto. Proper matching of the suspension 20 is critical to the performance criteria of the vehicle, and if the suspension 20 is too soft it is detrimental to the stability of the steering system, and if the suspension 20 is too hard it is likely to cause fatigue to the driver.

The loading device 11 can apply a load to the wheel 21 through the suspension 20. Further, in the present embodiment, in order to make the test process easier to operate, one quarter of the suspension 20 may be selected for the test. The verification of equivalent replacement of the whole vehicle can be realized by loading the suspension 20, and the cost of the vehicle and the test cost can be saved.

One end of the loading device 11 can be fixed on the wall or fixed through other structural members, and the other end of the loading device 11 is connected with the suspension 20. The loading device 11 may be provided in the suspension 20 in a vertical direction so as to apply a downward load to the wheel 21, thereby simulating the self weight of the entire vehicle. The state of the vehicle during actual running can be simulated by changing the magnitude of the load applied to the suspension 20 by the loading device 11. For example, the full load state of the vehicle, the half load state of the vehicle, and the empty load state, that is, the no load state of the vehicle can be simulated by changing the load applied to the suspension 20 by the loading device 11. In this way, the rolling body 13 is subsequently utilized to perform the rolling impact test on the wheel 21, and the strength of the suspension 20 after the vehicle is subjected to external impact under the condition of different loads can also be verified, so that the test process is more complete.

The support plate 12 is used to support the wheel 21 to facilitate testing of the wheel 21. Since the inclined portion 122 is inclined upward from the support portion 121, the rolling bodies 13 may roll on the inclined portion 122 to strike the wheel 21 on the support plate 12, thereby simulating a scene in which the vehicle collides with an obstacle during traveling. The rolling bodies 13 can be controlled to roll towards the wheels 21 at different preset angles, and different angle impacts on the vehicle can be simulated. The rolling body 13 may be made of a metal material or an alloy material.

The supporting plate 12 is simple to build so as to be convenient for testing, the test process is simple to operate, the state of the suspension 20 when a vehicle runs on a road and collides with an obstacle can be accurately reproduced, the durability of the suspension 20 can be quickly and effectively checked, design defects can be exposed as soon as possible, and follow-up improvement is carried out.

In this way, when the loading device 11 loads the suspension 20 and the rolling elements 13 roll toward the wheel 21 at different preset angles to collide with the wheel 21 to perform a strong and durable impact, a scene when the vehicle receives an impact during running can be effectively simulated. The strength of each part of the suspension 20 is verified in advance by detecting the working condition of the suspension 20, so that the potential safety hazard caused by insufficient strength such as falling of the control arm 24 of the suspension 20 and falling of the wheel 21 when a vehicle is subjected to large external impact is prevented, and accidents are prevented.

Referring to FIG. 1, in some embodiments, the test apparatus 10 includes a first upright 14, and the support plate 12 is mounted on the first upright 14. In this way, the first column 14 can support the support plate 12, and prevent the rolling elements 13 from moving along with the support plate 12 when rolling on the support plate 12, thereby affecting the impact of the rolling elements 13 on the wheel 21.

Specifically, the number of the first columns 14 may be plural, may be two, may be three, and the like. A plurality of first uprights 14 may be spaced apart at the bottom of the support plate 12 for supporting securement. The first upright 14 may be fixedly connected to the support plate 12 by welding. The first column 14 may be cylindrical or rectangular, and the shape of the first column 14 is not limited herein. One end of the first upright post 14 is connected to the support plate 12, and the other end of the first upright post 14 can be fixed to a stable platform or can be disposed on the ground. The stable platform or floor provides a stable testing environment for the test apparatus 10. The first upright column 14 may be made of a metal material with high strength.

Referring again to fig. 1, in some embodiments, the support portion 121 is provided with a convex plate 15, and the wheel 21 is supported on the convex plate 15. In this way, the convex plate 15 can raise the height of the wheel 21 relative to the support portion 121, so that the rolling bodies 13 roll from the inclined portion 122 and then hit the bottom of the wheel 21, thereby simulating the collision of the bottom of the wheel 21 with an obstacle during the actual running of the vehicle.

Specifically, the convex plate 15 may be rectangular, and the convex plate 15 may be made of an alloy material. The convex plate 15 can ensure that the rolling bodies 13 can effectively impact the wheel 21 after rolling down from the inclined part 122, and simulate the impact scene on the bottom of the wheel 21 when the vehicle passes through obstacles such as a speed bump.

Referring to fig. 1 to 4, in some embodiments, the number of the inclined portions 122 may be two, and the two inclined portions 122 are respectively connected to two opposite sides of the supporting portion 121. In this way, the rolling elements 13 can roll from the inclined portions 122 on both sides of the support portion 121, thereby simulating a scene in which the vehicle collides with an obstacle in two different directions of forward and backward movement.

Specifically, the inclined part 122 may include a first inclined part 1221 and a second inclined part 1222, and the support part 121 connects the first inclined part 1221 and the second inclined part 1222. Wherein the supporting portion 121 is disposed on the first column 14 in parallel with the ground, and the first and second

inclined portions

1221 and 1222 have a slope of 25 ° to 30 °, that is, the first and second

inclined portions

1221 and 1222 make an angle of 25 ° to 30 ° with the supporting portion 121. Preferably, the first and second

inclined parts

1221 and 1222 and the supporting part 121 may be all rectangular plates to facilitate connection therebetween. The first and second

inclined portions

1221 and 1222 and the supporting portion 121 may be made of wear-resistant and smooth alloy materials. In order to ensure that the rolling elements 13 roll at the same speed at the same position on the first and second

inclined portions

1221 and 1222, the first and second

inclined portions

1221 and 1222 should be uniform in size. In one example, the first and second

inclined parts

1221 and 1222 and the supporting part 121 may also be integrally formed.

Referring to fig. 2-4, in some embodiments, the two inclined portions 122 can enable the rolling elements 13 to roll toward the wheel 21 along different preset angles, where the preset angles are included angles between the axial direction of the wheel 21 and the rolling axis 131 of the rolling elements 13. In this way, the rolling elements 13 can impact the wheel 21 along different preset angles to simulate the complex situations encountered by the vehicle during actual driving.

Specifically, the rolling elements 13 may be cylindrical, the rolling axis 131 may be a central axis of the rolling elements 13, and the rolling elements 13 may roll toward the wheel 21 around the rolling axis 131. In order to simulate the impact of the vehicle in the actual running process more vividly, the rolling body 13 can be used for rolling and impacting the wheel 21 in multiple directions in the test process. Here, the angle between the rolling axis 131 of the rolling element 13 and the axial direction of the wheel 21 may be 45 °, 0 °, and 135 °. The diameter range of the rolling body 13 is 180mm-220mm, and the diameter of the rolling body 13 can be adjusted according to the use scene of the vehicle type market.

Taking the rolling direction from the first inclined part 1221 to the wheel 21 as the first direction X, the situation that the rolling body 13 rolls along the first direction X is planned as a scene that the vehicle encounters an obstacle when moving forward; the rolling direction of the rolling element 13 from the second inclined portion 1222 to the wheel 21 is the second direction Y, and the situation of rolling along the second direction Y is planned to be a situation that the vehicle is blocked by an obstacle when reversing.

Further, the rolling body 13 is controlled to roll at a speed of M ± 2km/h from the first inclined portion 1221 along a preset angle of 45 °, and a number of impact tests are performed on the wheel 21; controlling the rolling body 13 to roll along a preset angle of 0 degrees from the first inclined part 1221 at a speed of M +/-2 km/h, and carrying out A times of impact tests on the wheel 21; the rolling bodies 13 are controlled to roll at a speed of M +/-2 km/h from the first inclined part 1221 along a preset angle of 135 degrees, and a collision test on the wheel 21 is carried out for A times, so that a scene when the vehicle is collided by obstacles in different directions in the process of advancing is simulated.

Controlling the rolling body 13 to roll along a preset angle of 45 degrees at a speed of N +/-2 km/h from the second inclined part 1222, and carrying out B times of impact tests on the wheel 21; controlling the rolling body 13 to roll along a preset angle of 0 degrees from the second inclined part 1222 at the speed of N +/-2 km/h, and carrying out B times of impact tests on the wheel 21; the rolling bodies 13 are controlled to roll at a speed of N +/-2 km/h from the second inclined portion 1222 along a preset angle of 135 degrees, and B times of impact tests on the wheels 21 are carried out, so that the scene of the vehicle when the vehicle is impacted by obstacles in different directions in the process of backing is simulated. See table 1 for details.

TABLE 1

The rolling speed of the rolling body 13 can be adjusted by adjusting the height of the rolling body 13 on the inclined portion. The speed of the rolling body 13 and the impact frequency of the rolling body 13 can be adjusted according to the market use scene of the vehicle type.

After the impact of the rolling elements 13 is finished, the state of the suspension 20 is checked, and the following examination criteria can be used: the chassis components of the suspension 20 are allowed to deform but not to break, not to allow structural deformation resulting in functional failure; the ball head part of the control arm 24 connected with the steering knuckle 26 is not allowed to be pulled out, and the part of the control arm 24 connected with the auxiliary frame simulation device is not allowed to be pulled out; the wheel 21 rim is not allowed to crack more than 10 mm. If the suspension 20 and the wheel 21 satisfy the above criteria at the same time, it can be determined that the suspension 20 and the wheel 21 pass the test, that is, if the states of the suspension 20 and the wheel 21 do not satisfy any of the above conditions, it is determined that the suspension 20 does not pass the test, which indicates that the suspension 20 needs to be returned to the factory for maintenance and improvement.

Referring to fig. 3, in some embodiments, the testing apparatus 10 may further include a second column 16, and the loading device 11 is mounted on the second column 16. In this way, the test apparatus 10 can be connected to a support such as a wall or a bracket through the second column 16, so as to prevent the suspension 20 from moving when being hit by the rolling elements 13.

Specifically, the second column 16 may be cylindrical or rectangular, and the shape of the second column 16 is not limited herein. One end of the second upright post 16 is detachably connected with the loading device 11, and the other end of the second upright post 16 is fixedly connected with a wall or a support or other supports. In one example, the second upright 16 has a chute structure 161, and the loading device 11 is mounted in the chute structure 161. In this way, the loading device 11 can slide up and down in the chute structure 161 to adjust the position of the wheel 21 of the suspension 20, so that the rolling elements 13 can roll and hit different parts of the wheel 21.

Referring to fig. 2 and 5 in combination, in some embodiments, the loading device 11 includes an actuator 111 and a mounting base 112 connected to the actuator 111, the actuator 111 is mounted on the second upright 16, the mounting base 112 is connected to the shock absorber 22 of the suspension 20, and the actuator 111 is used for applying a load to the wheel 21 through the mounting base 112 and the shock absorber 22.

Specifically, the actuator 111 may be a liquid actuator 111 or a gas actuator 111. The actuator 111 is a mechanical device having a stroke during operation, and the magnitude of the stroke determines the magnitude of the biasing force that can be applied by the actuator 111. An actuator 111 is mounted on the second upright 16, the actuator 111 being capable of applying a loading force to the suspension 20 in a vertical direction.

Further, the actuator 111 and the mounting base 112 may be connected together by a movable joint member 113, and the mounting base 112 may be movable relative to the actuator 111.

The actuator 111 is connected with the upper end of the mounting base 112 through the hinge joint of the movable joint part 113. The movable joint part 113 may be a ball head rod, and the main material may be zinc alloy, nylon, or stainless steel.

Because the movable joint part 113 is partially spherical, the movable joint part 113 can also rotate angularly when connecting the actuator 111 and the mounting base 112, so as to adjust the loading angle of the shock absorber 22. The movable joint part 113 improves the flexibility of the mounting position of the actuator 111, so that the actuator 111 can arrange the mounting position according to the limit stroke of the actuator 111, thereby improving the size range of the loading applied by the actuator 111, and further improving the test range of the test equipment 10.

The shock absorber 22 is used to suppress the shock of the spring absorbing the shock and the impact from the road surface, and is commonly used in the automobile field to improve the ride comfort of the automobile. The shock absorber 22 is primarily both hydraulic and pneumatic in terms of the damping material that is produced, as well as a variably damped shock absorber 22. The mounting block 112 has a cavity structure to facilitate connection with the shock absorber 22 of the suspension 20. In this manner, the shock absorber 22 of the suspension 20 can be mounted and fixed through the cavity structure of the mounting seat 112.

The upper end of the mounting base 112 is connected with the actuator 111 through the hinge of the movable joint part 113, and the shock absorber 22 of the suspension 20 is mounted and fixed in the cavity of the mounting device. In this way, the actuator 111 can apply the loading force to the suspension 20, and the angle of the movable joint part 113 can be rotated, so that not only the loading angle of the shock absorber 22 can be adjusted, but also the magnitude of the loading force applied by the actuator 111 can be changed.

Referring to fig. 3, 6 and 7, in some embodiments, a steering rod 23 and a control arm 24 are disposed on the suspension 20, the testing apparatus 10 includes a first supporting member 17 and a second supporting member 18 spaced apart from the first supporting member 17, the first supporting member 17 is connected to the steering rod 23, the second supporting member 18 is connected to the control arm 24, and both the first supporting member 17 and the second supporting member 18 are spaced apart from the loading device 11.

Therefore, the control arm 24 and the steering rod 23 of the suspension 20 are fixedly installed by the first support piece 17 and the second support piece 18, so that the platform of the rack tool for installing the suspension 20 can be realized, and the tool cost is saved.

The tie rod 23 is an important part in the steering structure of the automobile, and the tie rod 23 affects the steering stability, the running safety and the service life of the tire of the automobile. The steering tie rod 23 is mainly divided into a steering drag rod and a tie rod. The control arm 24 acts as a guiding and force-transmitting element in the suspension 20 and transmits the force acting on the wheel 21 to the body while ensuring that the wheel 21 moves in a certain trajectory. In this way, the load applied to the wheel 21 by the actuator 111 can be transmitted to the suspension 20 via the control arm 24. The control arm 24 of the suspension 20 and the tie rod 23 can be fixed by connecting the first support 17 to the tie rod 23 and connecting the second support 18 to the control arm 24.

Referring to fig. 8, the first support 17 may include a first connecting member 171, a first movable member 172, and a first support base 173. The first link member 171 is connected to the steering link 23. The first movable member 172 is movably connected to the first connecting member 171 by an articulated structure. First movable member 172 is inserted into first support base 173, and first movable member 172 is movable relative to first support base 173.

Referring to fig. 9, the second supporting member 18 may include a second connecting member 181, a second movable member 182, and a second supporting seat 183. The second link 181 is connected to the control arm 24. The number of the second supports 18 is two. The second movable member 182 is movably connected to the second connecting member 181 via a joint structure. Second movable member 182 is inserted into second support seat 183, and second movable member 182 can move relative to second support seat 183.

First hinge 172 and second hinge 182 may be ball joint rods. First link 171 may be hingedly connected to the ball of first movable member 172. Second link 181 may be hingedly connected to the ball of second movable member 182. So that the first and

second connection members

171 and 181 can rotate. In this way, the first support 17 and the second support 18 can be adjusted in position according to the mounting points of the steering tie rod 23 and the control arm 24, respectively.

The lower end of the first movable member 172 may be a screw structure, the first supporting seat 173 is formed with threads, and the first movable member 172 may be threadedly coupled with the first supporting seat 173. The lower end of the second movable member 182 may be a screw structure, the second support seat 183 is formed with a screw thread, and the second movable member 182 may be connected with the second support seat 183 through the screw thread. Thus, the length of the first and second

movable members

172 and 182 can be adjusted by the base, so as to adjust the length of the first and second supporting

members

17 and 18.

Referring to fig. 6, the suspension 20 further includes a brake 25 and a knuckle 26. The brake 25 is a component of a brake system of a vehicle for generating a braking force that resists movement or a tendency of movement of the vehicle. The brake 25 generates a braking torque by friction of a fixed member with a working surface of a rotating member, and the brake 25 may be classified into a drum type and a disc type according to the rotating member. The rotary element in the drum brake friction pair is a brake drum, and the cylindrical surface is used as a working surface; the rotating element in the friction pair of the disc brake is a disc-shaped brake disc, and the end face is used as a working surface.

The knuckle 26 is a component that enables the vehicle to stably travel and sensitively transmit the traveling direction. The knuckle 26 is connected to the vehicle body through a bushing and a bolt, and is connected to the brake system through a mounting hole of the brake 25. The knuckle 26 receives a load applied to the front of the vehicle and supports and rotates the front wheel 21 about the kingpin to steer the vehicle.

After the impact of the rolling elements 13 on the wheel 21 is over, the state of the suspension 20 is checked, according to the following check criteria: the chassis parts are allowed to deform but not to break, and the functional failure caused by structural deformation is not allowed; the ball head part of the control arm 24 connected with the steering knuckle 26 is not allowed to be pulled out, and the part of the control arm 24 connected with the auxiliary frame simulation device is not allowed to be pulled out; the wheel 21 rim is not allowed to crack more than 10 mm. If the suspension 20 and the wheel 21 satisfy the above criteria at the same time, it can be determined that the suspension 20 and the wheel 21 pass the test, that is, if the states of the suspension 20 and the wheel 21 do not satisfy any of the above conditions, it is determined that the suspension 20 does not pass the test, which indicates that the suspension 20 needs to be returned to the factory for maintenance and improvement.

The embodiment of the application provides a test system 100, and the test system 100 comprises a suspension 20 and the test device 10 of any one of the embodiments. The test apparatus 10 is connected to a suspension 20.

In this way, the loading device 11 of the test system 100 loads the suspension 20, and the rolling elements 13 roll toward the wheel 21 at different preset angles to collide with the wheel 21 to perform strong durable impact, so that the impact scene of the vehicle receiving obstacles in different directions during forward running and backward running can be effectively simulated. After the impact of the rolling body 13 on the wheel 21 is finished, the working condition of the suspension 20 is detected, the strength of each part on the suspension 20 is verified, the design deficiency of the suspension is found out as early as possible, and the occurrence of accidents caused by the failure of the suspension 20 when the large external impact is applied after the suspension 20 is installed on a vehicle is prevented.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A test rig for testing a suspension of a vehicle, the test rig comprising:

the loading device is used for connecting the suspension, a wheel is mounted on the suspension, and the loading device is used for applying load to the wheel through the suspension;

a support plate including a support portion and an inclined portion connected to the support portion, the inclined portion being inclined upward from the support portion, the support portion being used to support the wheel, the inclined portion being used to roll a rolling body on the inclined portion toward the wheel to collide with the wheel.

2. The testing apparatus of claim 1, wherein the testing apparatus comprises a first upright, the support plate being mounted on the first upright.

3. Test rig according to claim 1, characterized in that the support part is provided with a cam plate on which the wheel is supported.

4. The testing apparatus according to claim 1, wherein the number of the inclined portions is two, and the two inclined portions are respectively connected to opposite sides of the support portion.

5. The test apparatus of claim 4, wherein the two support portions are capable of rolling the rolling element toward the wheel at different preset angles, and the preset angle is an included angle between an axial direction of the wheel and a rolling axis of the rolling element.

6. The testing apparatus of claim 1, wherein the testing apparatus comprises a second upright, the loading device being mounted on the second upright.

7. The test rig of claim 6, wherein the loading device includes an actuator mounted on the second upright and a mount coupled to the actuator, the mount coupled to a shock absorber of the suspension, the actuator configured to apply the load to the wheel through the mount and the shock absorber.

8. Test rig according to claim 7, wherein the actuator and the mounting are connected by a movable joint part, the mounting being movable relative to the actuator.

9. The test apparatus according to claim 1, wherein a steering tie bar and a control arm are provided on the suspension, the test apparatus includes a second support member provided at an interval between the first support member and the second support member, the first support member is connected to the steering tie bar, the second support member is connected to the control arm, and both the first support member and the second support member are provided at an interval to the loading device.

10. A testing system, comprising:

a suspension;

the test rig of any of claims 1-9, coupled to the suspension.