A vehicle bench durability testing device

Abstract

This utility model discloses a vehicle bench durability testing device, comprising: a vehicle body fixing device for fixing the vehicle body in a certain posture; and a loading mechanism, including a front wheel loading mechanism, a rear wheel loading mechanism, and an actuator. The front wheel loading mechanism is used to load the front wheels of the vehicle body, and the rear wheel loading mechanism is used to load the rear wheels of the vehicle body. Both the front wheel loading mechanism and the rear wheel loading mechanism are driven by the actuator. This utility model overcomes testing limitations and makes up for the shortcomings of traditional methods that only test chassis components, achieving coaxial and unidirectional durability performance verification of the suspension and vehicle body mounting parts. Simultaneously, this utility model can conduct coaxial and unidirectional tests of the front and rear suspensions simultaneously, improving testing efficiency and significantly shortening the total testing cycle. Furthermore, the fact that the front wheel loading mechanism and the rear wheel loading mechanism are driven by the actuator reduces the number of actuators and lowers hardware costs.

Description

Technical Field

[0001] This utility model is used in the field of automotive durability testing, and in particular relates to a whole vehicle bench durability test sample device. Background Technology

[0002] Existing technologies include durability testing platforms capable of simulating real-vehicle operating conditions for automotive suspensions. These platforms typically fix the vehicle suspension in place using fixtures, and then apply loads to the wheels of the suspension via a loading mechanism to simulate real-vehicle operating conditions. However, these durability testing platforms have the following drawbacks: 1. It can only verify the durability of suspension components, but cannot verify the durability of the suspension and the body mounting parts; 2. To perform the coaxial test of the front and rear suspensions, multiple hydraulic cylinders are required, which is costly and inefficient. 3. Vertical installation of hydraulic equipment is difficult.

[0003] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art and to provide a vehicle bench durability test device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A vehicle bench durability testing apparatus includes: Vehicle body fixing device, used to fix the vehicle body in a certain posture; The loading mechanism includes a front wheel loading mechanism, a rear wheel loading mechanism, and an actuator. The front wheel loading mechanism is used to load the front wheels of the vehicle body, and the rear wheel loading mechanism is used to load the rear wheels of the vehicle body. Both the front wheel loading mechanism and the rear wheel loading mechanism are driven by the actuator.

[0006] In some implementations, the front wheel loading mechanism includes a first front wheel loading mechanism for loading the left front wheel of the vehicle body and a second front wheel loading mechanism for loading the right front wheel of the vehicle body, and the rear wheel loading mechanism includes a first rear wheel loading mechanism for loading the left rear wheel of the vehicle body and a second rear wheel loading mechanism for loading the right front wheel of the vehicle body.

[0007] In some implementations, the first front wheel loading mechanism, the second front wheel loading mechanism, the first rear wheel loading mechanism, and the second rear wheel loading mechanism all include a crank-connecting rod mechanism. The crank-connecting rod mechanism includes a crank, a connecting rod, an actuating rod, a crank seat, and an actuating rod seat. The actuating rod seat is provided with an actuating rod guide hole, the actuating rod is disposed in the actuating rod guide hole, the crank is hinged to the crank seat, and the connecting rod is connected between the actuating rod and the crank.

[0008] In some implementations, in conjunction with the above implementations, the cranks of the first front wheel loading mechanism and the second front wheel loading mechanism are connected by a front crossbeam extending along the left-right width direction of the vehicle body, the cranks of the first rear wheel loading mechanism and the second rear wheel loading mechanism are connected by a rear crossbeam extending along the left-right width direction of the vehicle body, and the front crossbeam and the rear crossbeam are connected by a longitudinal beam extending along the front-rear length direction of the vehicle body.

[0009] In some implementations, the front crossbeam, rear crossbeam, and longitudinal beam form a linkage frame, and the output end of the actuator is connected to the linkage frame.

[0010] In some implementations, in conjunction with the above methods, the connecting rod is connected to the crank via a connecting rod seat, and the connecting rod seat can be adjusted in position along the length of the crank.

[0011] In some implementations, the crank is provided with a guide groove extending along its length, and the connecting rod seat can be adjusted along the guide groove to change its mounting position on the crank.

[0012] In some implementations, in conjunction with the above methods, the end of the actuating rod is connected to a wheel center loading fixture, which is provided with wheel hub bolt mounting holes.

[0013] In some implementations, the vehicle body fixing device supports the vehicle body at a certain height, and the loading mechanism is used to apply vertical loading from below the vehicle body.

[0014] In some implementations, the vehicle body fixing device includes multiple assembled square box fixtures, which are provided with honeycomb mounting holes.

[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: This utility model can be used for durability testing of the suspension and vehicle body mounting parts (connection positions). During the test, the vehicle body is fixed by a vehicle body fixing device, and then the front wheel loading mechanism and the rear wheel loading mechanism are driven by actuators to load the front and rear wheel positions of the vehicle body, thereby simulating fatigue damage at the connection positions of the suspension and the vehicle body during vehicle operation. This utility model breaks through the limitations of testing and makes up for the shortcomings of traditional testing only of chassis components, realizing the coaxial and unidirectional durability performance verification of the suspension and vehicle body mounting parts; at the same time, this utility model can simultaneously carry out coaxial and unidirectional tests of the front and rear suspensions, improving test efficiency and significantly shortening the total test cycle; in addition, the front wheel loading mechanism and the rear wheel loading mechanism are jointly driven by actuators, reducing the number of actuators and lowering hardware costs.

[0016] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 yes Figure 1 The diagram shown illustrates a state structure in one embodiment. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0021] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0022] in, Figure 1 The reference direction coordinate system of this utility model embodiment is given below, in conjunction with Figure 1 The embodiments of this utility model will be described in the directions shown.

[0023] See Figure 1 , Figure 2 This utility model provides a vehicle bench durability testing device, including a vehicle body fixing device 100 and a loading mechanism 300. The vehicle body fixing device 100 is used to fix the vehicle body 200 in a certain posture to maintain the stability of the vehicle body 200 during the test. The loading mechanism 300 is used to load the suspension (chassis) installed on the vehicle body 200, and the loading follows a preset load spectrum, such as load magnitude, frequency, number of cycles, etc. The loading mechanism 300 includes a front wheel loading mechanism, a rear wheel loading mechanism, and an actuator 301. The front wheel loading mechanism is used to load the front wheels of the vehicle body 200, and the rear wheel loading mechanism is used to load the rear wheels of the vehicle body 200. The actuator 301 serves as a power source, and both the front wheel loading mechanism and the rear wheel loading mechanism are driven by the actuator 301.

[0024] Combination Figure 1 , Figure 2This invention can be used for durability testing of the suspension and body 200 mounting section (connection position). During the test, the body 200 is fixed by the body fixing device 100, and then the actuator 301 drives the front wheel loading mechanism and the rear wheel loading mechanism to load the front and rear wheel positions of the body 200, thereby simulating fatigue damage at the connection position between the suspension and the body 200 during vehicle operation. This invention overcomes the limitations of traditional testing methods that only test chassis components, and achieves coaxial and unidirectional durability performance verification of the suspension and body 200 mounting section. At the same time, this invention can simultaneously conduct coaxial and unidirectional tests of the front and rear suspensions, improving test efficiency and significantly shortening the total test cycle. In addition, the front wheel loading mechanism and the rear wheel loading mechanism are jointly driven by the actuator 301, reducing the number of actuators 301 and lowering hardware costs.

[0025] In some embodiments, see Figure 1 , Figure 2 The front wheel loading mechanism includes a first front wheel loading mechanism 302 for loading the left front wheel of the vehicle body 200 and a second front wheel loading mechanism 303 for loading the right front wheel of the vehicle body 200. The rear wheel loading mechanism includes a first rear wheel loading mechanism 304 for loading the left rear wheel of the vehicle body 200 and a second rear wheel loading mechanism 305 for loading the right front wheel of the vehicle body 200. In this embodiment, corresponding loading mechanisms 300 are provided for the front and rear four wheels of the vehicle body 200 to more realistically simulate the fatigue damage of vertical loads on the vehicle frame during vehicle operation.

[0026] Further, see Figure 1 , Figure 2The first front wheel loading mechanism 302, the second front wheel loading mechanism 303, the first rear wheel loading mechanism 304, and the second rear wheel loading mechanism 305 all include a crank-connecting rod mechanism. The crank-connecting rod mechanism includes a crank 306, a connecting rod 307, an actuating rod 308, a crank seat 309, and an actuating rod seat 310. The actuating rod seat 310 is provided with an actuating rod guide hole 311. The actuating rod 308 extends along the vertical loading direction and is disposed in the actuating rod guide hole 311. The actuating rod guide hole 311 provides guidance and support for the vertical loading of the actuating rod 308. The crank 306 is hinged to the crank seat 309. The crank seat 309 can be fixedly installed on the ground or a workbench. The connecting rod 307 connects the actuating rod 308 and the crank 306. Under the action of actuator 301, crank 306 reciprocates around crank seat 309. Connecting rod 307 further converts the reciprocating oscillation of crank 306 into the reciprocating movement of actuator rod 308 along actuator rod guide hole 311. Finally, the driving force of actuator 301 is applied to the wheel position of vehicle body 200 through actuator rod 308. In this embodiment, by adopting a crank-connecting rod mechanism, the loading mechanism 300 can make the arrangement direction of actuator 301 no longer limited to the same vertical direction as the loading direction. For example, actuator 301 can be set in the horizontal direction, thus making the installation of actuator 301 more convenient.

[0027] See Figure 1 , Figure 2 The cranks 306 of the first front wheel loading mechanism 302 and the second front wheel loading mechanism 303 are connected by a front crossbeam 312 extending along the left-right width direction of the vehicle body 200. The cranks 306 of the first rear wheel loading mechanism 304 and the second rear wheel loading mechanism 305 are connected by a rear crossbeam 313 extending along the left-right width direction of the vehicle body 200. The front crossbeam 312 and the rear crossbeam 313 are connected by a longitudinal beam 314 extending along the front-rear length direction of the vehicle body 200. The front crossbeam 312, the rear crossbeam 313, and the longitudinal beam 314 form a linkage frame. The output end of the actuator 301 is connected to the linkage frame, thereby realizing the same drive loading of multiple loading mechanisms. The actuator 301 can be a hydraulic cylinder, a pneumatic cylinder, an electric push rod, etc. In order to obtain the loading force in real time, a force sensor is provided at the output end of the actuator rod 308 and / or the actuator 301. In this embodiment, each loading mechanism 300 is connected by a linkage frame and driven by the actuator 301. The driving force of the actuator 301 is converted into a coaxial and unidirectional loading force for the four wheels of the chassis. This can save the configuration of more actuators 301 and reduce hardware costs.

[0028] For example in Figure 1 , Figure 2In the illustrated embodiment, the actuator 301 is positioned in front of the loading mechanism. The actuator 301 applies load in a horizontal direction, and the horizontal driving force of the actuator 301 is further converted into a vertical loading force via a crank-connecting rod mechanism. This embodiment effectively reduces the difficulty of vertically installing the actuator 301 by reversing the driving force through the crank-connecting rod mechanism.

[0029] In some embodiments, see Figure 1 The connecting rod 307 is connected to the crank 306 via a connecting rod seat 315, the position of which can be adjusted along the length of the crank 306. In this embodiment, by adjusting the position of the connecting rod seat 315 on the crank 306, the lever arm of different loading mechanisms 300 is changed, thereby precisely controlling the difference in input force between the front and rear axles, simulating asymmetrical force scenarios such as acceleration and braking in a real vehicle, and fully verifying the durability performance of the mounting part under complex working conditions.

[0030] Specifically, see Figure 1 The crank 306 is provided with a guide groove 316 extending along the length direction, and the connecting rod seat 315 can be adjusted in the mounting position on the crank 306 along the guide groove 316.

[0031] It is understandable that, in addition to using a crank-connecting rod mechanism, the loading mechanism 300 can also use an actuator 301 arranged parallel to the loading direction for direct drive loading.

[0032] The technical solution of this utility model can meet the durability test requirements of different vehicle conditions. For example, when the vehicle suspension is equipped with wheels, the loading mechanism 300 can directly or indirectly apply the loading force to the wheels, and on this basis, complete the vehicle vertical load durability test and verify the durability performance of the suspension and body 200 mounting part (connection position).

[0033] Even when the chassis of the vehicle is not fitted with wheels, the technical solution of this utility model can still undergo durability testing. See [link / reference]. Figure 1 , Figure 2 In some embodiments, the end of the actuator 308 is connected to a wheel center loading fixture 317, which has wheel hub bolt mounting holes 318. During durability testing, the wheel center loading fixture 317 can be mounted on the steering knuckle of the vehicle body 200 suspension through its wheel hub bolt mounting holes 318, just like a wheel. The driving force of the actuator 301 is transmitted to the actuator 308 and further acts on the chassis suspension of the vehicle body 200 through the wheel center loading fixture 317, simulating fatigue damage to the frame caused by vertical loads during vehicle operation.

[0034] The vehicle body fixing device 100 can use a vehicle body 200 fixing clamp to fix the vehicle body 200 in a certain posture. For example, the bottom of the vehicle body 200 can be fixed downwards at a certain height, or the bottom of the vehicle body 200 can be laterally fixed to one side. In some embodiments, see [reference needed]. Figure 2 The vehicle body fixing device 100 supports the vehicle body 200 at a certain height, and the loading mechanism 300 is used to apply vertical loading from below the vehicle body 200.

[0035] Further, see Figure 1 , Figure 2 The vehicle body fixing device 100 includes multiple assembled square box fixtures 101, each with honeycomb mounting holes 102. The vehicle body fixing device 100 is formed by assembling multiple square box fixtures 101; this modular fixture design meets the fixing requirements of different vehicle models.

[0036] The top of the vehicle body fixing device 100 may be provided with a clamp 103 that connects to the bottom of the vehicle body 200. The clamp 103 can be directly connected to the bottom of the vehicle body 200, and is not limited to fixing to the battery pack mounting part of the electric vehicle, thus having a wider range of applications.

[0037] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A vehicle bench durability testing device, characterized in that, include: Vehicle body fixing device, used to fix the vehicle body in a certain posture; The loading mechanism includes a front wheel loading mechanism, a rear wheel loading mechanism, and an actuator. The front wheel loading mechanism is used to load the front wheels of the vehicle body, and the rear wheel loading mechanism is used to load the rear wheels of the vehicle body. Both the front wheel loading mechanism and the rear wheel loading mechanism are driven by the actuator.

2. The vehicle bench durability testing apparatus according to claim 1, characterized in that, The front wheel loading mechanism includes a first front wheel loading mechanism for loading the left front wheel of the vehicle body and a second front wheel loading mechanism for loading the right front wheel of the vehicle body. The rear wheel loading mechanism includes a first rear wheel loading mechanism for loading the left rear wheel of the vehicle body and a second rear wheel loading mechanism for loading the right front wheel of the vehicle body.

3. The vehicle bench durability testing apparatus according to claim 2, characterized in that, The first front wheel loading mechanism, the second front wheel loading mechanism, the first rear wheel loading mechanism, and the second rear wheel loading mechanism all include a crank-connecting rod mechanism. The crank-connecting rod mechanism includes a crank, a connecting rod, an actuating rod, a crank seat, and an actuating rod seat. The actuating rod seat is provided with an actuating rod guide hole, the actuating rod is disposed in the actuating rod guide hole, the crank is hinged to the crank seat, and the connecting rod is connected between the actuating rod and the crank.

4. The vehicle bench durability testing apparatus according to claim 3, characterized in that, The cranks of the first front wheel loading mechanism and the second front wheel loading mechanism are connected by a front crossbeam extending along the left-right width direction of the vehicle body. The cranks of the first rear wheel loading mechanism and the second rear wheel loading mechanism are connected by a rear crossbeam extending along the left-right width direction of the vehicle body. The front crossbeam and the rear crossbeam are connected by a longitudinal beam extending along the front-rear length direction of the vehicle body.

5. The vehicle bench durability testing apparatus according to claim 4, characterized in that, The front crossbeam, rear crossbeam, and longitudinal beam form a linkage frame, and the output end of the actuator is connected to the linkage frame.

6. The vehicle bench durability testing apparatus according to claim 3, characterized in that, The connecting rod is connected to the crank via a connecting rod seat, and the position of the connecting rod seat can be adjusted along the length direction of the crank.

7. The vehicle bench durability testing apparatus according to claim 6, characterized in that, The crank is provided with a guide groove extending along its length, and the connecting rod seat can be adjusted along the guide groove to change its mounting position on the crank.

8. The vehicle bench durability testing apparatus according to claim 3, characterized in that, The end of the actuating rod is connected to a wheel center loading fixture, which is provided with wheel hub bolt mounting holes.

9. The vehicle bench durability testing apparatus according to claim 1, characterized in that, The vehicle body fixing device supports the vehicle body at a certain height, and the loading mechanism is used to apply vertical loading from below the vehicle body.

10. The vehicle bench durability testing apparatus according to claim 9, characterized in that, The vehicle body fixing device includes multiple assembled square box fixtures, which are provided with honeycomb mounting holes.

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