Automated test platform for vehicle suspension system performance

Abstract

The utility model discloses an automatic test platform of vehicle suspension system performance relates to the automobile manufacturing technical field, including bearing seat, the top of bearing seat has the installation groove, the inside of installation groove is provided with the detection board that reciprocates along its height direction, and the both ends of detection board top are respectively seted up with short groove and long groove, and the width of long groove is greater than the width of short groove, and the inside of short groove and long groove all is provided with support frame, wherein the support frame in long groove can move along its width direction, and the both sides of support frame all are rotatably arranged with the rotating roller, and a plurality of rotating rollers rotate synchronously. The automatic test platform of vehicle suspension system performance is through setting up short groove, long groove, support frame etc. structure, simulates the driving state when driving the vehicle, makes the data more close to the real situation when driving, adjusts the distance between two support frames flexibly, satisfies the test demand of different wheelbase vehicle, improves the use efficiency of automatic test platform.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to an automated testing platform for the performance of vehicle suspension systems. Background Technology

[0002] The automotive suspension is one of the most important assemblies in a car, elastically connecting the chassis (or body) to the axles (or wheels). Its main tasks are to transmit all forces and torques acting between the wheels and the chassis (or body); to mitigate impact loads transmitted from the road surface to the chassis (or body), damping the resulting vibrations in the load-bearing system and ensuring a smooth ride; and to ensure ideal wheel motion characteristics under uneven road surfaces and varying loads, guaranteeing vehicle handling stability and enabling high-speed driving. Therefore, the technical condition and performance of the suspension have a significant impact on the overall performance of the vehicle.

[0003] For example, a patent entitled "A Vehicle Suspension Testing Device" (patent application number: CN202023124936.5) discloses a vehicle suspension testing device. It drives the wheels to rotate through a drive component, and then drives the testing plate to vibrate through a lifting part, thereby causing the vehicle's suspension to vibrate, simulating the driving state of a car, and then testing the suspension. This effectively improves the accuracy of the measurement results. However, in actual use, the position of the drive component is fixed, and it is only suitable for vehicles with a fixed wheelbase. It cannot be adapted to models with different wheelbases, and its versatility is poor.

[0004] Therefore, it is necessary to propose an automated testing platform for vehicle suspension system performance to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an automated testing platform for vehicle suspension system performance, in order to solve the problem that the device has a fixed position of drive components during actual use, is only applicable to vehicles with a fixed wheelbase, cannot be adapted to models with different wheelbases, and has poor versatility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automated testing platform for vehicle suspension system performance, comprising: A load-bearing base with a mounting slot on its top; The mounting groove has a detection plate that slides inside and reciprocates along its height direction. The top of the detection plate has a short groove and a long groove at both ends. Both the short groove and the long groove have a support frame inside. The support frame in the long groove can move along its width direction. Both sides of the support frame have rotatable rollers for supporting and driving the vehicle wheels to rotate. The testing platform is located on the side of the load-bearing seat and integrates a control module, a data acquisition module, and a signal analysis module. The data acquisition module is respectively installed on the testing plate, the support frame, and the rotating roller.

[0007] Furthermore, a sprocket is fixedly installed on the rotating roller, and two corresponding sprockets are connected by chain drive. A motor is fixedly installed on the support frame, and the corresponding rotating roller is fixedly connected to the drive shaft of the motor.

[0008] Furthermore, an electric push rod is installed inside the long groove, and a corresponding support frame is fixedly connected to the telescopic end of the electric push rod.

[0009] Furthermore, a second electric hydraulic cylinder is fixedly installed at the bottom of the support frame, and a support plate is fixedly connected to the telescopic end of the second electric hydraulic cylinder. The support plate is distributed along the length direction of the rotating roller.

[0010] Furthermore, a support plate is provided at the long groove. The support plate has a certain thickness, one side of which is fixed to the corresponding support frame, and the other side is attached to the detection plate.

[0011] Furthermore, both ends of the support plate are fixedly connected to reinforcing plates, and the end of the reinforcing plate away from the support plate is fixedly connected to the corresponding support frame.

[0012] Furthermore, a first electric hydraulic cylinder is installed at the bottom of the mounting groove, and the detection plate is fixedly connected to the telescopic end of the first electric hydraulic cylinder.

[0013] Furthermore, a ramp is fixedly connected to the end of the load-bearing seat.

[0014] Furthermore, the data acquisition module includes a vibration sensor mounted on the detection plate, a pressure sensor mounted at the connection node between the support frame and the rotating roller, and a displacement sensor mounted at the extension and retraction ends of the first and second electro-hydraulic cylinders.

[0015] The technical effects and advantages of this utility model are as follows: 1. By setting up structures such as short slots, long slots, and support frames, the driving state of a vehicle is simulated, making the data closer to the real driving situation. At the same time, the distance between the two support frames can be flexibly adjusted to meet the testing needs of vehicles with different wheelbases and improve the efficiency of the automated testing platform. 2. The support plate can cover and fill the area in the long groove that is not covered by the support frame, so as to prevent the wheels from sinking into the long groove or tilting when the vehicle is driving, and ensure the stability of the vehicle when driving on the test plate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the automated testing platform for the vehicle suspension system performance of this utility model from one perspective.

[0018] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 3 This is a schematic diagram of the automated testing platform for the vehicle suspension system performance of this utility model from another perspective.

[0020] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0021] Figure 5 This is a schematic diagram of the structure of the load-bearing base and the detection plate of this utility model.

[0022] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point C.

[0023] Figure 7 This is a schematic diagram of the support frame and rotating roller structure of this utility model.

[0024] In the diagram: 1. Load-bearing seat; 2. Slope; 3. Testing platform; 4. Mounting groove; 5. Testing plate; 6. First electric hydraulic cylinder; 7. Short groove; 8. Long groove; 9. Support frame; 10. Rotary roller; 11. Sprocket; 12. Chain; 13. Motor; 14. Second electric hydraulic cylinder; 15. Support plate; 16. Electric push rod; 17. Support plate; 18. Reinforcing plate. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the automated testing platform for vehicle suspension system performance proposed according to this utility model. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0026] This utility model provides, for example Figures 1-7 The automated test platform for the performance of the vehicle suspension system shown includes a load-bearing seat 1, and a ramp 2 is fixedly connected to the end of the load-bearing seat 1. Both the load-bearing seat 1 and the ramp 2 are fixed on the ground. The ramp 2 is made of high-strength carbon steel with anti-slip textured surface and has an inclination angle of 15° to allow the vehicle to drive smoothly onto the load-bearing seat 1 and avoid bumps when getting on and off the platform, which would affect the test preparation work.

[0027] The top of the load-bearing seat 1 has a mounting groove 4, and a detection plate 5 is slidably installed inside the mounting groove 4. A first electric hydraulic cylinder 6 is installed at the bottom of the mounting groove 4. The first electric hydraulic cylinder 6 is a high-pressure heavy-duty model (model: HSGK01-200 / 100-800) and is connected to the factory power supply. The detection plate 5 is fixedly connected to the telescopic end of the first electric hydraulic cylinder 6. When the vehicle is on the detection plate 5, the first electric hydraulic cylinder 6 drives the detection plate 5 to move back and forth along the height direction of the mounting groove 4, simulating the vibration and bumps encountered when driving the vehicle. The detection plate 5 and the suspension system of the vehicle under test resonate. The resonance frequency, amplitude, and output vibration waveform curve are measured by the testing platform 3, and the data and waveforms are recorded. Then, the data is analyzed and processed to evaluate the working performance of the suspension system.

[0028] The top of the detection plate 5 has a short groove 7 and a long groove 8 at its two ends. The vehicle enters the detection position from the short groove 7 to the long groove 8. The ramp 2 is located on the side of the short groove 7 facing away from the long groove 8. When exiting, the vehicle reverses from the long groove 8 to the short groove 7.

[0029] The width of the long slot 8 is greater than that of the short slot 7. Both the short slot 7 and the long slot 8 are equipped with support frames 9. The support frame 9 in the short slot 7 is fixed to the bottom of the slot with bolts and remains in a fixed position. The support frame 9 in the long slot 8 can move along its width. The bottom of the support frame 9 in the long slot 8 is equipped with a sliding guide rail (model: THKSR35), which can move smoothly along the width of the long slot 8, so as to flexibly adjust the distance between the two support frames 9. The adjustment range is 2200-3500mm, which can be adapted to passenger cars, commercial vehicles and other models with different wheelbases, greatly improving the versatility of the equipment.

[0030] Both sides of the support frame 9 are equipped with rotating rollers 10. The rollers 10 are made of polyurethane and have a surface friction coefficient of 0.85, which ensures sufficient friction with the wheel while avoiding damage to the wheel tire.

[0031] A sprocket 11 is fixedly mounted on the roller 10, and the two corresponding sprockets 11 are connected by a chain 12. A motor 13 is fixedly mounted on the support frame 9, and the corresponding roller 10 is fixedly connected to the drive shaft of the motor 13.

[0032] After the motor 13 starts, it drives the two rollers 10 on the same support frame 9 to rotate synchronously and in the same direction through the transmission action of the sprocket 11 and the chain 12, thereby driving the vehicle wheels to rotate, simulating the rolling state of the vehicle when driving. Combined with the vibration action of the detection plate 5, it realizes the composite simulation of driving conditions and bumpy road conditions, making the test data closer to the real driving scenario.

[0033] An electric push rod 16 is installed inside the long slot 8, and a corresponding support frame 9 is fixedly connected to the telescopic end of the electric push rod 16. By controlling the extension and retraction of the electric push rod 16, the position of the support frame 9 inside the long slot 8 can be precisely adjusted, thereby adjusting the distance between the two support frames 9 to meet the testing requirements of vehicles with different wheelbases. The electric push rod 16 is connected to the factory's power supply.

[0034] Motor 13 is connected to the factory's power supply. The two motors 13 are selected from the same batch and model (Y2-200L1-6), and are equipped with the same model of frequency converter (such as Huichuan MD880). The parameters are initialized to be consistent. At the same time, the current sensor is used to monitor the current deviation in real time, so as to achieve consistent control of the speed, torque and current of the two motors and realize the synchronous rotation of multiple rollers 10.

[0035] Align the front and rear tires of the vehicle with the rollers 10 on both sides of the support frame 9 in the short groove 7 and long groove 8, respectively, ensuring that the tires are centered between the corresponding two rollers 10. Then, the motor 13 is started, and the rollers 10 are driven to rotate synchronously through the sprocket 11 and chain 12. The friction between the rollers 10 and the tires drives the wheels to rotate, simulating the vehicle's driving speed of 30-80 km / h. By simulating the driving state of the vehicle, the suspension is then tested, making the data closer to the real driving situation, thereby effectively improving the accuracy of the measurement results.

[0036] At the same time, the first electric hydraulic cylinder 6 drives the detection plate 5 to perform reciprocating sinusoidal vibration, simulating vibration conditions of different road conditions such as urban roads and bumpy rural roads; after the test is completed, the vehicle drives off from the detection plate 5 via the ramp 2.

[0037] In summary, by setting up structures such as short slots 7, long slots 8, and support frames 9, the driving state of a vehicle is simulated, making the data closer to the real driving situation. At the same time, the distance between the two support frames 9 can be flexibly adjusted to meet the testing needs of vehicles with different wheelbases, thereby improving the efficiency of the automated testing platform.

[0038] A support plate 17 is provided at the long groove 8. The support plate 17 is made of anti-slip patterned steel plate and has a certain thickness. One side of the support plate 17 is fixed to the corresponding support frame 9, and the other side of the support plate 17 is attached to the detection plate 5. Both ends of the support plate 17 are fixedly connected to the reinforcing plate 18. The reinforcing plate 18 adopts a triangular support structure and is made of Q235 steel plate. The end of the reinforcing plate 18 away from the support plate 17 is fixedly connected to the corresponding support frame 9.

[0039] Because the long groove 8 is relatively wide, when the support frame 9 moves to different positions, the support plate 17 can cover and fill the area in the long groove 8 that is not covered by the support frame 9, so as to prevent the wheels from sinking into the long groove 8 or tilting when the vehicle is driving, and ensure the stability of the vehicle on the detection plate 5.

[0040] A second electric hydraulic cylinder 14 (model: HSGK01-100 / 50-300) is fixedly installed at the bottom of the support frame 9. A support plate 15 is fixedly connected to the telescopic end of the second electric hydraulic cylinder 14. The support plate 15 is distributed along the length direction of the rotating roller 10.

[0041] Before the test, the second electric hydraulic cylinder 14 is energized and extends, driving the pallet 15 to rise until the top surface of the pallet 15 is completely flush with the surface of the rotating roller 10. At this time, the pallet 15 fills the gap between the two rotating rollers 10 (the gap width is about 50mm), forming a continuous and flat support surface, which makes it easy for the vehicle to quickly enter the testing position.

[0042] During the test, the control plate 15 is lowered until it loses contact with the wheel.

[0043] After the test, the pallet 15 is raised back to the same level as the roller 10. At this time, the operator starts the vehicle to reverse, and the wheels move from between the two rollers 10 toward the ramp 2. The pallet 15 fills the gap between the rollers 10 again, providing continuous support for the wheels and facilitating the vehicle to exit quickly.

[0044] The side of the load-bearing seat 1 is equipped with a testing platform 3, which integrates a core control module, a data acquisition module, a signal analysis module, and a display terminal. The core control module uses a PLC controller (model: S7-1500) to receive commands and control the coordinated operation of various actuators. The data acquisition module is equipped with a high-precision vibration sensor (model: PCB356A16), a pressure sensor (model: PT124G-111), and a displacement sensor (model: LVDTGT21). The vibration sensor is fixed to the bottom and side of the detection plate 5, directly acquiring the resonant frequency, amplitude, and acceleration of the reciprocating vibration of the detection plate 5. The pressure sensor is installed at the connection node between the support frame 9 and the rotating roller 10, capturing the real-time pressure of the wheel on the rotating roller 10 to reflect the suspension load distribution. The displacement sensor is attached to the extension and retraction ends of the first electro-hydraulic cylinder 6 and the second electro-hydraulic cylinder 14, monitoring the stroke displacement of the electro-hydraulic cylinder to accurately control the test conditions, thereby acquiring data such as vibration frequency, amplitude, and suspension force in real time. The signal analysis module uses dedicated software to filter, amplify, and process the acquired signals to generate vibration waveform curves. The display terminal is a 15-inch industrial touch screen, which can display test data, waveform graphs, and final performance evaluation results in real time, and also supports data storage, export, and historical record query functions. The testing station 3 is also equipped with a built-in UPS uninterruptible power supply (model: APCSUA1000ICH) to ensure that data is not lost in the event of a sudden power outage. Its power supply is connected to the workshop's 380V industrial power supply, which is converted into 220V and 24V DC power through the built-in transformer, respectively powering the control module, sensors and actuators.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automated test platform for vehicle suspension system performance, characterized in that, include: The load-bearing base (1) has a mounting groove (4) on its top. The mounting groove (4) is slidably provided with a detection plate (5) that moves back and forth along its height direction. The top two ends of the detection plate (5) are respectively provided with a short groove (7) and a long groove (8). The short groove (7) and the long groove (8) are both provided with a support frame (9). The support frame (9) in the long groove (8) can move along its width direction. The two sides of the support frame (9) are rotatably provided with rollers (10) for supporting and driving the vehicle wheels to rotate. The testing platform (3) is located on the side of the load-bearing seat (1). It integrates a control module, a data acquisition module and a signal analysis module. The data acquisition module is installed on the testing plate (5), the support frame (9) and the rotating roller (10) respectively.

2. The automated test platform for vehicle suspension system performance of claim 1, wherein: A sprocket (11) is fixedly installed on the roller (10), and the two corresponding sprockets (11) are connected by a chain (12). A motor (13) is fixedly installed on the support frame (9), and the corresponding roller (10) is fixedly connected to the drive shaft of the motor (13).

3. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: An electric push rod (16) is installed inside the long groove (8), and the corresponding support frame (9) is fixedly connected to the telescopic end of the electric push rod (16).

4. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: The bottom of the support frame (9) is fixedly installed with a second electric hydraulic cylinder (14), and a support plate (15) is fixedly connected to the telescopic end of the second electric hydraulic cylinder (14). The support plate (15) is distributed along the length direction of the rotating roller (10).

5. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: A support plate (17) is provided at the long groove (8). The support plate (17) has a certain thickness. One side of it is fixed on the corresponding support frame (9), and the other side is attached to the detection plate (5).

6. The automated testing platform for vehicle suspension system performance according to claim 5, characterized in that: Both ends of the support plate (17) are fixedly connected to a reinforcing plate (18), and the end of the reinforcing plate (18) away from the support plate (17) is fixedly connected to the corresponding support frame (9).

7. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: The bottom of the mounting groove (4) is equipped with a first electric hydraulic cylinder (6), and the detection plate (5) is fixedly connected to the telescopic end of the first electric hydraulic cylinder (6).

8. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: The end of the load-bearing seat (1) is fixedly connected to a ramp (2).

9. The automated testing platform for vehicle suspension system performance according to claim 1, characterized in that: The data acquisition module includes a vibration sensor on the detection plate (5), a pressure sensor at the connection node between the support frame (9) and the rotating roller (10), and a displacement sensor at the extension and retraction ends of the first electric hydraulic cylinder (6) and the second electric hydraulic cylinder (14).

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