A kind of vehicle steering performance testing device

Abstract

The automobile steering performance test device disclosed in the present invention comprises a chassis, a test bench arranged above the chassis, and the test bench is connected to the chassis through a lifting mechanism; a rotating device is arranged on the test bench relative to the test bench, and an automobile support structure and a test structure are arranged on both sides of the rotating device; the rotating device comprises a rotating shaft arranged on the surface of the test bench and a sleeve arranged on the outer wall of the rotating shaft; the automobile support structure comprises a first hydraulic cylinder fixed on one side of the sleeve, a connecting block is arranged on the side of the first hydraulic cylinder away from the sleeve, a second hydraulic cylinder is fixed on the upper surface of the connecting block, and a top plate is installed on the top of the second hydraulic cylinder; a guide wheel is arranged on the lower surface of the support structure, and the guide wheel contacts the test bench; the test structure comprises a connecting rod fixedly arranged on one side of the rotating device, and a material storage box is arranged on the connecting rod. The automobile steering performance test device of the present invention can accurately test the performance of automobile steering, and is simple to operate, and is suitable for automobile detection of different models.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent driving automobiles, and in particular to a vehicle steering performance testing device. Background Art

[0002] When turning, according to the steering requirements, master the steering wheel angle, turn moderately, avoid turning the steering wheel at a large angle, and try to avoid braking when turning, especially emergency braking, which may cause the risk of rollover. If the front wheel slides when turning, lift the accelerator pedal and turn the steering wheel in the opposite direction at the same time; if the rear wheel slides, turn the steering wheel appropriately in the direction of turning, and correct the driving direction after the sliding stops. During driving, pay attention to straight vehicles, and the steering leader should wait for the straight vehicles to pass before turning; also pay attention to the movements of other vehicles, bicycles and pedestrians to ensure safety.

[0003] Some cars have malfunctions, and it is difficult to steer accurately when turning. Some cars may understeer, some may oversteer, and there are other steering faults. It is not easy to conduct an intuitive test on the steering performance of the car. Generally, a car steering wheel tester is used for detection, and some detection data need to be statistically analyzed. The steering performance is only tested when the car is stationary, rather than the steering performance when the car is driving. In addition, the operation is relatively complicated. Therefore, it is urgent to design a car steering performance test device to solve the shortcomings of the existing technology. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a vehicle steering performance testing device, which enables the vehicle to steer dynamically, can accurately test the vehicle steering performance, is easy to operate, and is suitable for testing vehicles of different models.

[0005] The technical solution of the present invention to solve the above problems is:

[0006] The provided automobile steering performance test device comprises a chassis and a test bench arranged above the chassis, wherein the test bench is connected to the chassis through a lifting mechanism; a rotating device is arranged on the test bench relative to the test bench, and an automobile support structure and a test structure are arranged on both sides of the rotating device;

[0007] The rotating device comprises a rotating shaft arranged on the surface of the test bench and a collar sleeved on the outer wall of the rotating shaft;

[0008] The automobile support structure comprises a first hydraulic cylinder fixed on one side of the collar, a connecting block is arranged on the side of the first hydraulic cylinder away from the collar, a second hydraulic cylinder is fixed on the upper surface of the connecting block, and a top plate is installed on the top of the second hydraulic cylinder; a guide wheel is arranged on the lower surface of the support structure, and the guide wheel is in contact with the test bench;

[0009] The test structure comprises a connecting rod fixedly arranged on one side of the rotating device, and a material holding box is arranged on the connecting rod.

[0010] The automobile steering performance test device of the present invention drives the chassis and the test platform to move up and down relatively by hydraulic drive, and can realize the lifting and lowering of the test platform relative to the chassis, and a rotating device is arranged on the test platform and a supporting structure and a test structure are arranged on both sides thereof, so that the wheels of the automobile that do not need to be measured are lifted by the supporting part, and the wheels to be tested for steering are driven to steer by the rotating device, so as to test the steering performance of the automobile. The automobile steering performance test device of the present invention can be applied to various automobiles, is simple to operate, and has intuitive test results, and can be widely promoted.

[0011] Furthermore, the lifting mechanism is a third hydraulic cylinder arranged in the middle of the upper surface of the chassis.

[0012] The first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder in the present invention are all electric hydraulic cylinders.

[0013] Furthermore, the rotating shaft is driven by a motor arranged on the upper surface of the test bench; the model of the motor is Y180M-2. The purpose of the rotating shaft is to facilitate the adjustment of the position of the test device and the rotation of the entire vehicle after it is lifted.

[0014] Furthermore, the guide wheel is a universal wheel structure, and a baffle is welded on the top of the rotating shaft. The rotating shaft and the collar are fixedly connected, such as welded. In order to prevent the rotating shaft and the collar from relative axial movement due to welding cracking and other problems during the operation of the automobile steering performance test device, which may cause safety hazards, a baffle is welded on the top of the rotating shaft. The baffle is used to prevent the collar from falling off the rotating shaft when it moves axially.

[0015] Furthermore, the material storage box is placed on both sides of the connecting rod, the top surface of the material storage box is provided with a feed port, and the bottom surface of the material storage box is evenly provided with discharge holes, and the diameter of the discharge holes is 1-3 mm. This arrangement is for circumferential placement on the test bench. After putting sand into the material storage box, the motor is started to rotate the entire shaft once, and the sand can be circumferentially arranged on the test bench.

[0016] Furthermore, connecting strips are symmetrically welded on the side surfaces of the material holding box, and the connecting strips are fastened to the connecting rods by screws.

[0017] Furthermore, the collar is symmetrically provided with mounting plates, and lighting lamps are evenly mounted on the surface of the mounting plates.

[0018] Furthermore, the mounting plate is an arc-shaped structure with a hollow interior, and a circuit board connected in series with the lighting lamp is installed inside the arc-shaped structure, and the circuit board is connected to a nearby power source.

[0019] Furthermore, a fourth hydraulic cylinder is installed between the mounting plate and the collar.

[0020] Furthermore, the test bench is a support plate with a circumferential inclined surface structure, a circular ring mark is printed on the upper surface of the support plate, and the diameter of the support plate ranges from 4 to 8 m.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention utilizes the setting of the third hydraulic cylinder to further lift the support plate. By setting the circumference of the support plate to an inclined surface, it is convenient to drive the car onto the support plate, so as to facilitate the detection of the steering performance of the car. By driving the motor, the sleeve ring can be driven to rotate, and the car can be pulled to travel in a circle, so that the steering of the car can be detected while the car is driving, which is more intuitive.

[0023] Through the cooperation of the first hydraulic cylinder and the second hydraulic cylinder, it is convenient to support the top plate on the crossbeam between the rear wheels of the car, so as to realize the jacking and support of the rear wheels of the car and pull the car; by printing a circular mark on the test bench, it is convenient to observe whether the front wheels of the car match the marks when turning, so as to observe the steering situation of the front wheels of the car; by setting up a material box, the material is contained in the material box, and the soil is sprinkled on the support plate, and then the front wheels of the car roll on the support plate, and the marks can be printed on the support plate when the car rotates and drives, so as to intuitively know the situation when the front wheels of the car are turning; by setting up a lighting lamp, it is convenient to illuminate, and it is convenient to clearly observe the situation on the support plate when testing, so as to realize the detection of the steering performance of the car.

[0024] The present invention reasonably utilizes the drive of the motor to pull the car to rotate in a circle, and then utilizes the material contained in the material box to directly print the mark of the car wheel running on the support plate, which is convenient for intuitive observation of the car's steering performance, and has reasonable design, convenient operation, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a schematic structural diagram of the vehicle steering performance testing device according to the present invention.

[0026] Figure 2 The figure is a top view of the vehicle steering performance testing device according to the present invention.

[0027] Figure 3 It is a bottom view of the material holding box described in the present invention.

[0028] Among them, the label explanation is: 1. chassis, 2. test bench, 3. connecting rod, 4. connecting bar, 5. material box, 6. collar, 7. rotating shaft, 8. baffle, 9. mounting plate, 10. lighting lamp, 11. first hydraulic cylinder, 12. top plate, 13. second hydraulic cylinder, 14. connecting block, 15. guide wheel, 16. third hydraulic cylinder, 17. motor, 18. fourth hydraulic cylinder, 19. feed port, 20. discharge hole. DETAILED DESCRIPTION

[0029] The accompanying drawings are only used for illustrative purposes and cannot be understood as limiting the present patent. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1

[0031] like Figure 1~Figure 3 As shown, the automobile steering performance test device of this embodiment includes a chassis 1, a test bench 2 arranged above the chassis 1, and the test bench 2 is connected to the chassis 1 through a lifting mechanism. The test bench 2 is a support plate with a circumferential inclined surface structure, and a circular ring mark is printed on the upper surface of the support plate. The diameter range of the support plate is 4-8m, and the outer ring diameter of the support plate of the present invention is 8m, and the inclined surface is at an angle of 20° with the horizontal plane. Its lifting mechanism is a third hydraulic cylinder 16 arranged in the middle of the upper surface of the chassis 1; a rotating device is arranged on the test bench 2 relative to the test bench 2, and the automobile support structure and the test structure are arranged on both sides of the rotating device.

[0032] Specifically, the rotating device includes a rotating shaft 7 driven by a motor 17 disposed on the upper surface of the test bench 2 and a collar 6 sleeved on the outer wall of the rotating shaft 7 and fixedly connected to the rotating shaft. The collar 6 can be welded to the outer wall of the rotating shaft 7 or can be interference fit with the rotating shaft 7. The motor in this embodiment is model Y180M-2. A baffle 8 is also welded on the top of the rotating shaft 7 to prevent the collar from moving in the axial direction.

[0033] Furthermore, a mounting plate 9 with a hollow arc structure is symmetrically arranged on both sides of the front and rear of the collar 6, and a lighting lamp 10 is evenly installed on the surface of the mounting plate 9. A circuit board connected in series with the lighting lamp 10 is installed inside the arc structure, and the circuit board is connected to a nearby power supply. A fourth hydraulic cylinder 18 is installed between the mounting plate 9 and the collar 6.

[0034] The automobile support structure includes a first hydraulic cylinder 11 fixed on one side of the collar 6, a connecting block 14 is arranged on the side of the first hydraulic cylinder 11 away from the collar 6, a second hydraulic cylinder 13 is fixed on the upper surface of the connecting block 14, and a top plate 12 is installed on the top of the second hydraulic cylinder 13; the top position of each vehicle will be different due to different models and brands, but for maintenance, a position that can be lifted up will be set on the chassis 1. This position is generally near the rear beam of the rear wheel, and the top plate 12 in this embodiment is at this position that can be lifted up.

[0035] A guide wheel 15 is provided on the lower surface of the supporting structure, and the guide wheel 15 contacts the test bench 2. In this embodiment, the guide wheel 15 is a universal wheel structure, and the first hydraulic cylinder 11, the second hydraulic cylinder 13 and the third hydraulic cylinder 16 are all electric hydraulic cylinders.

[0036] The test structure includes a connecting rod 3 fixedly arranged on one side of the rotating device, and a material holding box 5 is arranged on the connecting rod 3. Specifically, connecting strips 4 are symmetrically welded on the side of the material holding box 5, and the connecting strips 4 and the connecting rod 3 are fastened with screws. The material holding box 5 is placed on both sides of the connecting rod 3, and a feed port 19 is provided on the top surface of the material holding box 5, and discharge holes 20 are evenly provided on the bottom surface. The diameter of the discharge hole 20 is 1-3mm. The discharge hole 20 in the material holding box 5 is for circumferential placement on the test bench 2. After placing the material holding box 5, start the motor and rotate it once, and the material can be arranged circumferentially on the test bench 2.

[0037] The automobile steering performance test device can be placed in a ditch in a workshop or the chassis 1 can be directly buried underground to fix the entire test device. When the chassis 1 is buried underground, the vertical height of the part of the test device exposed to the ground is lower than the height from the automobile chassis to the ground; such a setting can prevent the automobile chassis from being scratched when the automobile drives to the test device. When placed in a ditch in a workshop, the height of the entire ditch is slightly higher than the automobile steering performance test device or the height of the entire ditch is equal to the height of the entire automobile steering performance test device.

[0038] Operation steps: When it is necessary to test the steering performance of the car, the device is positioned in the car repair workshop for use. The chassis 1 is buried underground, and then the first hydraulic cylinder 11, the second hydraulic cylinder 13, the third hydraulic cylinder 16, the motor 17 and the lighting lamp 10 are connected to the nearby power supply, and the switch of the third hydraulic cylinder 16 is turned on, and the lifting of the third hydraulic cylinder 16 is controlled to lower the support plate, and the circumference of the support plate is an inclined structure, so that it is convenient for the car to drive onto the support plate, and then the driver gets off the car. In order to facilitate observation, the third hydraulic cylinder 16 is controlled to raise the support plate. At this time, the switch of the motor 17 is turned on, so that the motor 17 drives the rotating shaft 7 to rotate, and then drives the collar 6 to rotate in a circle. The first hydraulic cylinder 11 will follow the rotation through the guidance of the guide wheel 15, and the top plate 12 will be rotated to below the rear beam of the car at the bottom of the car, and then Finally, the motor 17 is turned off, and the switch of the second hydraulic cylinder 13 is turned on. The second hydraulic cylinder 13 is used to support the top plate 12, and then the car is pushed up, so that the rear wheels of the car leave the support plate and the front wheels contact the support plate. Sand is loaded into the material box 5 through the feed port 19 in advance, and the sand will leak onto the support plate through the discharge hole 20. Then the switch of the motor 17 is turned on, and the motor 17 will drive the rotating shaft 7 to rotate, so that the ring 6 will rotate, and then the car will be pulled to rotate on the support plate, and rotate in a circle. When rotating, the front wheels of the car will turn and crush the material scattered on the support plate, presenting the track of the car's driving on the support plate. At the same time, a circular mark is also printed on the support plate for comparison to observe whether the car's driving path is stable. When the light is dim, the switch of the lighting lamp 10 is turned on to illuminate, making it easier for users to observe.

[0039] The description of the positional relationship in the accompanying drawings is only for illustrative purposes and should not be construed as a limitation on this patent. Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A vehicle steering performance testing device, characterized in that: The invention comprises a chassis (1) and a test bench (2) arranged above the chassis (1), wherein the test bench (2) is connected to the chassis (1) via a lifting mechanism; a rotating device is arranged on the test bench (2), and a vehicle support structure and a test structure are arranged on both sides of the rotating device; The rotating device comprises a rotating shaft (7) arranged on the surface of the test bench (2) and a collar (6) sleeved on the outer wall of the rotating shaft (7); The automobile support structure comprises a first hydraulic cylinder (11) fixed on one side of the collar (6); a connecting block (14) is provided on the side of the first hydraulic cylinder (11) away from the collar (6); a second hydraulic cylinder (13) is fixed on the upper surface of the connecting block (14); a top plate (12) is installed on the top of the second hydraulic cylinder (13); a guide wheel (15) is provided on the lower surface of the support structure; the guide wheel (15) is in contact with the test bench (2); The test structure comprises a connecting rod (3) fixedly arranged on one side of the rotating device, and a material holding box (5) is arranged on the connecting rod (3).

2. The vehicle steering performance testing device according to claim 1, characterized in that: The lifting mechanism is a third hydraulic cylinder (16) arranged in the middle of the upper surface of the chassis (1).

3. The vehicle steering performance testing device according to claim 1, characterized in that: The rotating shaft (7) is driven by a motor (17) arranged on the upper surface of the test bench (2).

4. The vehicle steering performance testing device according to claim 3, characterized in that: A baffle (8) is welded to the top end of the rotating shaft (7).

5. The vehicle steering performance testing device according to claim 1, characterized in that: The material holding box (5) is placed across the two sides of the connecting rod (3), a material inlet (19) is provided on the top surface of the material holding box (5), and material discharge holes (20) are evenly provided on the bottom surface of the material holding box (5).

6. The vehicle steering performance testing device according to claim 1, characterized in that: The side surfaces of the material holding box (5) are symmetrically welded with connecting strips (4), and the connecting strips (4) are fastened to the connecting rods (3) by screws.

7. The vehicle steering performance testing device according to claim 1, characterized in that: The collar (6) is symmetrically provided with a mounting plate (9) at the front and rear, and lighting lamps (10) are evenly mounted on the surface of the mounting plate (9).

8. The vehicle steering performance testing device according to claim 7, characterized in that: The mounting plate (9) is an arc-shaped structure with a hollow interior, and a circuit board connected in series with the lighting lamp (10) is installed inside the arc-shaped structure, and the circuit board is connected to a nearby power source.

9. The vehicle steering performance testing device according to claim 7, characterized in that: A fourth hydraulic cylinder (18) is installed between the mounting plate (9) and the collar (6).

10. The vehicle steering performance testing device according to any one of claims 1 to 9, characterized in that: The test bench (2) is a support disk with a circumferential inclined surface structure, a circular ring mark is printed on the upper surface of the support disk, and the diameter of the support disk ranges from 4 to 8 m.

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