Vehicle working condition simulation test bed and suspension function test system

Abstract

The utility model relates to a vehicle working condition simulation test bench and a suspension function test system, the vehicle working condition simulation test bench comprises a support assembly, a vehicle body simulation assembly, a detection assembly and a driving assembly, and the vehicle body simulation assembly is movably arranged on the support assembly; the detection assembly is connected with the vehicle body simulation assembly and changes in position along with movement of the vehicle body simulation assembly relative to the supporting assembly. The driving assembly is connected with the vehicle body simulation assembly, so that the vehicle body simulation assembly moves relative to the supporting assembly. An air spring assembly is replaced by the driving assembly, a compressor, an air spring, an inflation pipeline, an exhaust pipeline and other parts do not need to be arranged, the overall structure of the test bench can be simple, the vehicle body simulation assembly is made to move relative to the supporting assembly through the driving assembly, and therefore position adjustment and working condition simulation of a vehicle body in different driving modes are achieved; the detection assembly can obtain height information in the changing process, and the height information can be conveniently used for software control logic observation in the suspension function test.

Description

Technical Field

[0001] The present application relates to the field of automobile testing technology, and in particular to a vehicle operating condition simulation test bench and a suspension function testing system. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, people's demand for travel is also increasing. For the public, cars are not just a means of transportation, but also an indispensable part of modern society. They expand people's scope of activities and deeply affect people's daily life and culture.

[0003] In the process of automobile production, in order to improve the comfort of the vehicle, the vehicle chassis needs to be continuously upgraded and debugged. Among them, the suspension system has the greatest impact on the comfort of the vehicle. The air suspension system, as a suspension system commonly equipped in mid-to-high-end models, can adjust the vehicle suspension height through the expansion and contraction of the rubber airbag of the air spring and the adjustment of the solenoid valve group. The suspension height and hardness can be adjusted according to different road conditions and driving requirements, and it is suitable for different driving modes (such as standard mode, off-road mode, etc.), to provide a more comfortable ride experience and more stable handling performance.

[0004] In the early stage of the development of the suspension system, it is necessary to observe the software control logic in the suspension function test system to ensure that each module in the system operates accurately in different driving modes. At this time, if the height is adjusted directly through the air spring assembly connected to the frame or chassis, it is necessary to set up multiple air springs, charging and discharging pipelines and compressors in the test device to obtain the height information required during the observation process, which will lead to a complex structure of the test device. In addition, the air spring assembly needs to be frequently charged and discharged to achieve height adjustment. During the test process, the test engineer needs to constantly adjust the height sensor and the solenoid valve group to charge and discharge the spring to achieve the purpose of vehicle height adjustment, which takes a long time and has low test efficiency. Utility Model Content

[0005] One of the purposes of the present application is to provide a vehicle operating condition simulation test bench to solve the problems in the prior art of complex test device structure and low test efficiency when obtaining vehicle height information changes during the test process; the second purpose is to provide a suspension function test system.

[0006] In order to achieve the above purpose, the technical solution adopted in this application is as follows:

[0007] A vehicle operating condition simulation test bench, comprising:

[0008] Support components;

[0009] A vehicle body simulation component, wherein the vehicle body simulation component is movably disposed on the support component;

[0010] A detection component, the detection component is connected to the vehicle body simulation component and changes position as the vehicle body simulation component moves relative to the support component;

[0011] A driving assembly is connected to the vehicle body simulation assembly to enable the vehicle body simulation assembly to move relative to the supporting assembly.

[0012] According to the above technical means, the vehicle body simulation component is moved relative to the support component through the driving component, thereby realizing the position adjustment and working condition simulation of the vehicle body in different driving modes. The detection component is connected to the vehicle body simulation component, and the position can change as the vehicle body simulation component moves relative to the support component, so that the detection component can obtain the height information during the change process, which is convenient for using the height information for software control logic observation in the suspension function test. Since the present application replaces the air spring component in the conventional air suspension test bench with the driving component, the movement of the vehicle body simulation component relative to the support component can be realized by electric drive or hydraulic drive, thereby realizing the height change of the vehicle body simulation component and the detection component. This makes the entire vehicle working condition simulation test bench simple in structure and easy to adjust, which is conducive to improving test efficiency.

[0013] Furthermore, the support assembly includes a guide structure, and the vehicle body simulation assembly is slidably connected to the guide structure along a vertical direction.

[0014] According to the above technical means, the vehicle body simulation component can move more smoothly during the height adjustment process, and the movement of the detection component connected to the vehicle body simulation component is also smoother, which is conducive to obtaining accurate height change information.

[0015] Furthermore, the vehicle body simulation component includes a rack portion, and the driving component includes a driving gear matched with the rack portion.

[0016] According to the above technical means, the driving of the body simulation component is achieved by means of gear rack meshing, the connection is reliable and the driving accuracy is high, the driving process is smooth, and it is conducive to achieving high-precision adjustment of the height during the lifting and lowering process of the body simulation component.

[0017] Furthermore, the guide structure has a groove extending in a vertical direction, the rack portion is slidably disposed in the groove, and the groove has an opening disposed toward the driving gear.

[0018] According to the above technical means, the rack part can cooperate with both the driving assembly and the guide structure, so that the rack part has both transmission and guide functions, which is conducive to simplifying the structure of the vehicle working condition simulation test bench. The rack part is slidably arranged in the groove, and the lifting and lowering guidance of the rack part can be achieved through the guide structure. The groove has an opening arranged toward the driving gear, which facilitates the meshing of the rack part and the driving gear. When the driving gear rotates, the rack part can slide in the groove of the guide structure.

[0019] Furthermore, the driving assembly also includes a rotating driving member connected to the driving gear.

[0020] According to the above technical means, the driving gear is driven to rotate forward or reversely by the rotating driving member, thereby realizing the lifting and lowering adjustment of the body of the body simulation component under different driving modes.

[0021] Furthermore, the detection component includes a first swing arm, a second swing arm and a height sensor, the first end of the first swing arm is rotatably set on the support component, the second end of the first swing arm is hinged to the first end of the second swing arm, and the second end of the second swing arm is connected to the vehicle body simulation component; the height sensor is set on the first swing arm and its position changes with the rotation of the first swing arm.

[0022] According to the above technical means, when the vehicle body simulation component is raised or lowered by the driving component, the second swing arm drives the first swing arm to rotate, and the height position of the height sensor changes with the rotation of the first swing arm, so that the actual height information required during the test process can be collected in real time.

[0023] Furthermore, the detection assembly also includes a fixing seat, which is arranged between the supporting assembly and the first swing arm, and the fixing seat has a wiring harness interface for connecting to the height sensor.

[0024] According to the above technical means, the fixing seat is arranged between the support assembly and the first swing arm to realize the rotation connection between the support assembly and the first swing arm. The wiring harness interface on the fixing seat facilitates the connection of the test wiring harness with the height sensor signal through the wiring harness interface to realize the transmission of the height information detected by the height sensor.

[0025] Furthermore, the vehicle body simulation component includes two arch frame components that are arranged opposite to each other, the two arch frame components are respectively arranged at two ends of the support component, and the two driving components are arranged in a one-to-one correspondence with the arch frame components.

[0026] According to the above technical means, the two arch frame assemblies are respectively arranged at the two ends of the supporting assembly, which can be used to realize the simulation of the front and rear of the vehicle. The two driving assemblies are arranged in a one-to-one correspondence with the arch frame assemblies, and the lifting and lowering of the two arch frame assemblies can be adjusted accordingly, so as to realize the height adjustment simulation of the front and rear of the vehicle in different driving modes during the test.

[0027] Furthermore, the arch frame assembly is a bilaterally symmetrical structure, and includes a first connecting rod, a second connecting rod and a third connecting rod. Both ends of the third connecting rod are provided with the first connecting rod and the second connecting rod connected at an angle. The first connecting rod is movably connected to the supporting assembly, and the second connecting rod is connected to the detection assembly.

[0028] According to the above technical means, the imitation of the front and rear structures of the vehicle can be achieved by connecting the first connecting rod, the second connecting rod and the third connecting rod in the arch frame assembly. The first connecting rod is movably connected to the support assembly. When the first connecting rod moves relative to the support assembly, the position of the arch frame assembly as a whole will also change. The second connecting rod is connected to the detection assembly to drive the detection assembly to change its position synchronously, so that the height sensor in the detection assembly collects height information according to the height change.

[0029] A suspension function test system comprises a vehicle working condition simulation test bench, a control module and an execution module. The detection component, the drive component and the execution module are all connected to the control module by signal.

[0030] According to the above technical means, the accuracy of the software control logic of the suspension function test system can be observed through the action flow between the detection component, the drive component, the execution module and the control module. Therefore, in the later air spring test and actual vehicle test, the verified software can be used to realize the automatic test of the suspension system.

[0031] Furthermore, the execution module includes a compressor relay and an air spring solenoid valve group, and the control module is signal-connected to the compressor relay and the air spring solenoid valve group respectively.

[0032] According to the above technical means, the compressor relay and air spring solenoid valve group in the execution module act as the control module load, and the execution module is controlled by the control module to work normally, so as to avoid the control module reporting errors during the test. During the software control logic observation process, the vehicle working condition simulation test bench provides height information changes through the drive component. It only needs to observe whether the compressor relay and air spring solenoid valve group are accurate. There is no need to actually set up the compressor or air spring to obtain height change information, which can simplify the test system structure and greatly improve the test efficiency.

[0033] Beneficial effects of this application:

[0034] (1) The present application uses a vehicle operating condition simulation test bench to achieve vehicle body height adjustment under different driving modes. During the adjustment process, the vehicle body simulation component can be moved relative to the support component through the driving component. The test bench has a simple structure, which is conducive to improving the test efficiency of the suspension function test system.

[0035] (2) The present application replaces the air spring assembly in the conventional air suspension test bench with a drive assembly, and can realize the movement of the body simulation assembly relative to the support assembly by electric drive or hydraulic drive, thereby realizing the height change of the body simulation assembly and the detection assembly. The entire vehicle working condition simulation test bench does not need to be equipped with components such as a compressor, air spring, inflation pipeline, exhaust pipeline, etc., and has a simple structure and convenient adjustment, which is conducive to improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a vehicle operating condition simulation test bench provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the connection between the drive assembly and the vehicle body simulation assembly provided in an embodiment of the present application;

[0038] Figure 3 Schematic diagram of the structure of the detection component provided in the embodiment of the present application Figure 1 ;

[0039] Figure 4 Schematic diagram of the structure of the detection component provided in the embodiment of the present application Figure 2 ;

[0040] Figure 5 Schematic diagram of the structure of the detection component provided in the embodiment of the present application Figure 3 ;

[0041] Figure 6 A connection diagram of a suspension function test system provided in an embodiment of the present application.

[0042] Among them, 1-support assembly; 11-guide structure; 111-opening; 12-support stand; 2-body simulation assembly; 21-first connecting rod; 211-rack portion; 22-second connecting rod; 23-third connecting rod; 3-detection assembly; 31-first swing arm; 32-second swing arm; 321-connector; 33-fixed seat; 331-wiring harness interface; 332-connecting hole; 4-drive assembly; 41-drive gear; 42-rotating drive member; 5-control module; 6-execution module; 7-host computer. DETAILED DESCRIPTION

[0043] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0044] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application, and thus the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0045] The present embodiment proposes a vehicle operating condition simulation test bench, including a support component 1, a body simulation component 2, a detection component 3 and a drive component 4; wherein the support component 1 is used as a supporting body to support the body simulation component 2, the detection component 3 and the drive component 4, and can simulate the chassis of the entire vehicle during the test. The body simulation component 2 is movably arranged on the support component 1, and during different driving mode tests, the height change and operating condition simulation of the body simulation component 2 are achieved by the movement of the body simulation component 2 relative to the support component 1. The detection component 3 is connected to the body simulation component 2, and its position changes as the body simulation component 2 moves relative to the support component 1, thereby achieving the acquisition of height information during different driving mode tests, such as Figure 1 The driving component 4 is connected to the vehicle body simulation component 2, so that the vehicle body simulation component 2 moves relative to the supporting component 1, thereby changing the positions of the vehicle body simulation component 2 and the detection component 3, so that the detection component 3 can obtain the height information during the change process, which is convenient for using the height information for software control logic observation in the suspension function test.

[0046] It should be noted that the present application replaces the air spring assembly in the conventional air suspension test bench with the drive assembly 4, and can realize the movement of the body simulation assembly 2 relative to the support assembly 1 by electric drive or hydraulic drive, thereby realizing the height change of the body simulation assembly 2 and the detection assembly 3. There is no need to set up components such as a compressor, air spring, inflation pipeline, exhaust pipeline, etc., so that the entire vehicle working condition simulation test bench has a simple structure and is easy to adjust, which is conducive to improving the test efficiency.

[0047] In the above embodiment, the body simulation component 2 can achieve height adjustment by sliding relative to the support component 1, and can also achieve height adjustment by rotating relative to the support component 1. In order to replicate the adjustment process of the actual vehicle, it is preferred that the body simulation component 2 achieves height adjustment by sliding in the vertical direction relative to the support component 1.

[0048] In some embodiments of this application, please refer to Figure 1 and Figure 2 The support component 1 includes a guide structure 11, and the body simulation component 2 is slidably connected to the guide structure 11 along the vertical direction, so that the body simulation component 2 can move more smoothly during the height adjustment process, and the movement of the detection component 3 connected to the body simulation component 2 is also smoother, which is conducive to obtaining accurate height change information.

[0049] In the above embodiment, the height adjustment of the vehicle body simulation component 2 in the vertical direction can be achieved by linear actuators such as hydraulic drive components (such as hydraulic cylinders) and pneumatic drive components (such as air cylinders). However, oil leakage and air leakage may occur during the driving process of hydraulic drive components and pneumatic drive components, which may lead to driving failure; and the test site needs to be arranged with oil pipelines and air pipelines, which will make the test site complex.

[0050] Therefore, in some preferred embodiments of the present application, the vehicle body simulation component 2 includes a rack portion 211, and the driving component 4 includes a driving gear 41 matched with the rack portion 211, and the vehicle body simulation component 2 is driven by the meshing of the gear and rack. The connection is reliable and the driving accuracy is high, and the driving process is smooth, which is conducive to achieving high-precision adjustment of the height of the vehicle body simulation component 2 during the lifting process.

[0051] In the above embodiment, if the vehicle body simulation component 2 is provided with both a rack portion 211 and a guide member cooperating with the guide structure 11, the structure of the vehicle body simulation component 2 will be complicated. Therefore, in some preferred embodiments of the present application, the rack portion 211 is directly matched with the guide structure 11, so that the rack portion 211 can cooperate with both the drive component 4 and the guide structure 11, so that the rack portion 211 has both transmission and guide functions, which is conducive to simplifying the structure of the vehicle operating condition simulation test bench. Specifically, the guide structure 11 has a groove extending in the vertical direction, and the rack portion 211 is slidably set in the groove, and the guide structure 11 can realize the lifting and lowering guidance of the rack portion 211. The groove has an opening 111 set toward the drive gear 41, such as Figure 2 As shown, the rack portion 211 is easily meshed with the driving gear 41 . When the driving gear 41 rotates, the rack portion 211 can slide in the groove of the guide structure 11 .

[0052] In some embodiments of this application, please refer to Figure 2The driving assembly 4 also includes a rotating driving member 42 connected to the driving gear 41, which is used to drive the driving gear 41 to rotate forward or reverse, thereby realizing the lifting and lowering adjustment of the vehicle body simulation assembly 2 under different driving modes.

[0053] It should be noted that the rotating drive component 42 can be a driving motor or a rotating motor and other components. In some embodiments of the present application, the rotating drive component 42 is a servo motor. The servo motor has the advantages of high precision and fast response, and can achieve very precise positioning and motion control, which is beneficial to achieve height adjustment of the vehicle body simulation component 2, so that the detection component 3 can obtain accurate height change information.

[0054] It should be noted that the drive assembly 4 includes a motor controller, which can be used to connect signals with the rotating drive member 42 in the drive assembly 4 to achieve rotation control (including direction, speed, start and stop) of the rotating drive member 42 (ie, the servo motor).

[0055] In some embodiments of this application, please refer to Figures 3 to 5 The detection component 3 includes a first swing arm 31, a second swing arm 32 and a height sensor. The first end of the first swing arm 31 is rotatably arranged on the support component 1, the second end of the first swing arm 31 is hinged to the first end of the second swing arm 32, and the second end of the second swing arm 32 is connected to the vehicle body simulation component 2 through a connecting member 321; the height sensor is arranged on the first swing arm 31, and changes its position with the rotation of the first swing arm 31 to realize the detection of height information. Specifically, when the vehicle body simulation component 2 moves upward under the action of the driving component 4, the second swing arm 32 moves upward and drives the first swing arm 31 to rotate forward, the height position of the height sensor changes with the rotation of the first swing arm 31, and the height information is collected in real time. When the vehicle body simulation component 2 moves downward under the action of the driving component 4, the second swing arm 32 moves downward and drives the first swing arm 31 to rotate in the opposite direction, the height position of the height sensor changes with the rotation of the first swing arm 31, and the height information is collected in real time.

[0056] It should be noted that when the height sensor is disposed inside the first swing arm 31, the height sensor can be protected by the housing of the first swing arm 31. The detection end of the height sensor is at a preset distance from the connection between the first swing arm 31 and the support assembly 1, so that the height position of the height sensor changes with the rotation of the first swing arm 31.

[0057] In some embodiments of this application, please refer to Figure 1 and Figure 4The detection assembly 3 also includes a fixed seat 33, which is arranged between the support assembly 1 and the first swing arm 31, and is used to realize the rotation connection between the support assembly 1 and the first swing arm 31. The fixed seat 33 has a harness interface 331 for connecting to the height sensor, which facilitates the test harness to be connected to the height sensor signal through the harness interface 331 to realize the transmission of the height information detected by the height sensor. In addition, the harness interface 331 is fixedly arranged, which can fix the position of the external connection harness, and avoid the harness from being worn due to friction with the edge of the support stand 12 in the support assembly 1 when the harness rotates with the first swing arm 31.

[0058] Specifically, the fixing seat 33 includes a connection hole 332 , and components such as bolts are inserted into the connection hole 332 to achieve connection between the fixing seat 33 and the support stand 12 .

[0059] In some embodiments of this application, please refer to Figure 1 The vehicle body simulation component 2 includes two relatively arranged arch frame components, and the two arch frame components are respectively arranged at the two ends of the support component 1, which can be used to simulate the front and rear of the vehicle. The two driving components 4 are arranged in a one-to-one correspondence with the arch frame components, and the lifting and lowering of the two arch frame components can be adjusted accordingly, so as to realize the height adjustment simulation of the front and rear of the vehicle in different driving modes during the test.

[0060] In some embodiments of this application, please refer to Figure 1 The arch assembly is a bilaterally symmetrical structure, forming an arch structure similar to the front or rear of a vehicle. The arch assembly includes a first connecting rod 21, a second connecting rod 22 and a third connecting rod 23. Both ends of the third connecting rod 23 are provided with a first connecting rod 21 and a second connecting rod 22 connected at an angle, which can imitate the front and rear structures of a vehicle. The first connecting rod 21 is movably connected to the support assembly 1. When the first connecting rod 21 moves relative to the support assembly 1, the position of the arch assembly as a whole will also change. The second connecting rod 22 is connected to the detection assembly 3 to drive the detection assembly 3 to change its position synchronously, so that the height sensor in the detection assembly 3 collects height information according to the height change.

[0061] It should be noted that at least part of the first connecting rod 21 is configured as a rack portion 211, and the rack portion 211 on the first connecting rod 21 can be used to simultaneously achieve connection with the guide structure 11 and the driving gear 41, such as Figure 1 Specifically, the lower half of the first connecting rod 21 is a rack portion 211 , and the driving gear 41 is meshed with the rack portion 211 , and the rack portion 211 is adjusted in the guide structure 11 by the forward or reverse rotation of the driving gear 41 .

[0062] In some embodiments of the present application, since the two arch frame assemblies include four first connecting rods 21, four guide structures 11 are provided on the left and right sides of the support frame 12, which are respectively used to cooperate with the four first connecting rods 21 one by one, so as to achieve stable guidance of the two arch frame assemblies. Figure 1 Each second connecting rod 22 is connected to a corresponding detection component 3, which obtains the height change information of different areas of the vehicle body simulation component 2 through four height sensors, and transmits the height value to the control module 5 of the suspension function test system for data analysis and processing.

[0063] The present application also provides a suspension function test system, including the vehicle operating condition simulation test bench in the above embodiment, and also including a control module 5 and an execution module 6. The detection component 3, the drive component 4, and the execution module 6 are all connected to the control module 5 by signal. Figure 6 As shown, the accuracy of the software control logic of the suspension function test system can be observed through the action flow between the detection component 3, the drive component 4, the execution module 6 and the control module 5. Therefore, in the later air spring test and actual vehicle test, the tested and verified software can be used to realize the automatic test of the suspension system.

[0064] In some embodiments of the present application, the execution module 6 includes a compressor relay and an air spring solenoid valve group, and the control module 5 is respectively connected to the compressor relay and the air spring solenoid valve group signals. During the software control logic observation process, the vehicle operating condition simulation test bench provides height information changes through the driving component 4. It is only necessary to observe whether the compressor relay and the air spring solenoid valve group operate accurately. There is no need to actually set up a compressor or air spring to obtain height change information, which can simplify the test system structure and greatly improve the test efficiency.

[0065] In some embodiments of this application, please refer to Figure 6 The suspension function test system also includes a host computer 7, which is respectively connected to the control module 5 and the vehicle operating condition simulation test bench by signal. The tester can directly issue a control instruction to the control module 5 or the vehicle operating condition simulation test bench through the host computer 7.

[0066] See also Figures 1 to 6 In some embodiments of the present application, the test method for performing a function test of an air spring system in a chassis system by using the above suspension function test system is as follows:

[0067] Step 1: Reference Figure 1Build a suspension function test system, use a communication cable (such as a network cable) to connect the host computer 7 to the control module 5, realize Ethernet communication, and ensure that the host computer 7 can read various signal information of the control module 5 normally. Use a wiring harness to connect the host computer 7 to the vehicle working condition simulation test bench, and control the motor controller through a script so that the drive component 4 in the vehicle working condition simulation test bench can operate normally. Use a wiring harness to connect the control module 5 to the drive component 4 and the detection component 3 in the vehicle working condition simulation test bench, and read the signal information of the height sensor normally through the control module 5. Use a wiring harness to connect the control module 5 to the execution module 6, so that the compressor relay and air spring solenoid valve group in the execution module 6 act as the load of the control module 5, and control the execution module 6 to work normally through the control module 5 to avoid errors reported by the control module 5 during the test.

[0068] Step 2: After powering on, debug the vehicle operating condition simulation test bench. If the suspension function test system can normally obtain the height data of the height sensor and there is no error during the debugging process, you can prepare for the test.

[0069] Step 3: Build a test environment, power on the control module 5, and the CANape tool (CANape is an automotive electronic calibration tool that can realize ECU (electronic control unit) measurement, calibration, flashing, diagnosis and other functions) connected to the host computer 7 can normally read the actual height signal of the height sensor, the target height signal set in the control module 5, and the signal status of each relay and valve group in the execution module 6.

[0070] Step 4: Start the programmed automatic test program through the host computer 7 to send different driving mode signals to the control module 5 and the vehicle operating condition simulation test bench.

[0071] Step 5: Use CANape to read the target height value in the driving mode set in the control module 5 and the current height value obtained by the height sensor, and compare the target height value with the current height value. If the target height value is greater than the current height value, it means that the vehicle body needs to be raised by inflating the air spring. At this time, the control module 5 sends a signal to the execution module 6 to turn on the compressor relay and the corresponding air spring solenoid valve group (inflating valve) in the execution module 6 to simulate the inflation process of the air spring; at the same time, the host computer 7 will send a signal to the motor controller of the vehicle operating condition simulation test bench to make the drive gear 41 drive the rack part 211 to slide upward, so that the vehicle body simulation component 2 moves upward, simulating the effect of the vehicle body rising due to inflation. During the rising process of the vehicle body simulation component 2, the position of the height sensor keeps changing, and the current height value collected by the height sensor keeps changing. When the current height value collected by the height sensor enters the threshold range of the target height value in this driving mode, the control module 5 sends a signal to the execution module 6 to turn off the compressor relay and the corresponding air spring solenoid valve group in the execution module 6, simulating the action of stopping the air spring from inflating. At the same time, the motor controller controls the rotating drive member 42 to stop rotating. At this time, one height rise adjustment can be completed. The software control logic can be confirmed to be correct by observing whether the actions of the control module 5 and the execution module 6 are accurate.

[0072] If the target height value is less than the current height value, it means that the vehicle body needs to be lowered by deflating the air spring. At this time, the control module 5 sends a signal to the execution module 6 to open the corresponding air spring solenoid valve group (exhaust valve) in the execution module 6 to simulate the deflation process of the air spring; at the same time, the host computer 7 will send a signal to the motor controller of the vehicle working condition simulation test bench to make the drive gear 41 drive the rack part 211 to slide downward, so that the vehicle body simulation component 2 moves downward to simulate the effect of the vehicle body descending due to deflation. During the descent of the vehicle body simulation component 2, the position of the height sensor changes continuously, and the current height value collected by it also changes continuously. When the current height value collected by the height sensor enters the threshold range of the target height value in the driving mode, the control module 5 sends a signal to the execution module 6 to close the corresponding air spring solenoid valve group in the execution module 6 to simulate the action of stopping the exhaust of the air spring. At the same time, the motor controller controls the rotating drive member 42 to stop rotating. At this time, one height drop adjustment can be completed. The correctness of the software control logic can be confirmed by observing whether the actions of the control module 5 and the execution module 6 are accurate.

[0073] The present application uses a vehicle operating condition simulation test bench to achieve vehicle body height adjustment in different driving modes. During the adjustment process, the vehicle body simulation component 2 can be moved relative to the support component 1 through the driving component 4. The test bench has a simple structure and does not require frequent inflation and deflation to achieve height information acquisition, which is beneficial to improving the test efficiency of the suspension function test system.

[0074] The present application can realize the simulation test of the inflation and deflation process of the air spring through a suspension function test system, so as to observe whether the software control logic in the suspension function test system is accurate, and to facilitate the application of the verified software control logic to the subsequent air spring automation detection and actual vehicle detection process.

[0075] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. A vehicle operating condition simulation test bench, characterized in that: include: Support assembly (1); A vehicle body simulation component (2), the vehicle body simulation component (2) being movably arranged on the support component (1); A detection component (3), the detection component (3) being connected to the vehicle body simulation component (2) and changing position as the vehicle body simulation component (2) moves relative to the support component (1); A driving component (4) is connected to the vehicle body simulation component (2) to enable the vehicle body simulation component (2) to move relative to the supporting component (1).

2. The vehicle operating condition simulation test bench according to claim 1, characterized in that: The support assembly (1) comprises a guide structure (11), and the vehicle body simulation assembly (2) is slidably connected to the guide structure (11) along a vertical direction.

3. The vehicle operating condition simulation test bench according to claim 2 is characterized in that: The vehicle body simulation component (2) comprises a rack portion (211), and the driving component (4) comprises a driving gear (41) matched with the rack portion (211).

4. The vehicle operating condition simulation test bench according to claim 3 is characterized in that: The guide structure (11) has a groove extending in a vertical direction, the rack portion (211) is slidably disposed in the groove, and the groove has an opening (111) disposed toward the driving gear (41).

5. The vehicle operating condition simulation test bench according to claim 3 is characterized in that: The driving assembly (4) further comprises a rotating driving member (42) connected to the driving gear (41).

6. The vehicle operating condition simulation test bench according to any one of claims 1 to 5, characterized in that: The detection component (3) comprises a first swing arm (31), a second swing arm (32) and a height sensor; the first end of the first swing arm (31) is rotatably arranged on the support component (1); the second end of the first swing arm (31) is hinged to the first end of the second swing arm (32); the second end of the second swing arm (32) is connected to the vehicle body simulation component (2); the height sensor is arranged on the first swing arm (31) and its position changes with the rotation of the first swing arm (31).

7. The vehicle operating condition simulation test bench according to claim 6, characterized in that: The detection assembly (3) further comprises a fixing seat (33), wherein the fixing seat (33) is arranged between the support assembly (1) and the first swing arm (31), and the fixing seat (33) has a wiring harness interface (331) for connecting to the height sensor.

8. The vehicle operating condition simulation test bench according to any one of claims 1 to 5, characterized in that: The vehicle body simulation component (2) comprises two arch frame components that are arranged opposite to each other. The two arch frame components are respectively arranged at two ends of the support component (1), and the two drive components (4) are arranged in a one-to-one correspondence with the arch frame components.

9. The vehicle operating condition simulation test bench according to claim 8, characterized in that: The arch frame assembly is a bilaterally symmetrical structure, comprising a first connecting rod (21), a second connecting rod (22) and a third connecting rod (23), both ends of the third connecting rod (23) are provided with the first connecting rod (21) and the second connecting rod (22) connected at an angle, the first connecting rod (21) is movably connected to the supporting assembly (1), and the second connecting rod (22) is connected to the detection assembly (3).

10. A suspension function test system, comprising the vehicle operating condition simulation test bench according to any one of claims 1 to 9, characterized in that: It also comprises a control module (5) and an execution module (6), and the detection component (3), the drive component (4) and the execution module (6) are all connected to the control module (5) by signals.

11. The suspension function test system according to claim 10, characterized in that: The execution module (6) comprises a compressor relay and an air spring solenoid valve group, and the control module (5) is respectively connected to the compressor relay and the air spring solenoid valve group by signals.

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