A vehicle roll test bench and test method

Abstract

The present invention discloses a vehicle roll test bench and a test method, comprising a support leg, wherein the upper end of the support leg is rotatably connected to a test bench, the lower right end of the test bench is rotatably connected to a hydraulic telescopic rod, an angle measuring instrument is fixedly connected to the front end of the test bench, a power mechanism is arranged inside the test bench, a flip mechanism and a second blocking block are arranged at the upper end of the test bench, and a blocking assembly is arranged on the flip mechanism; a pressure sensor is fixedly connected to the right end of the upper end of the test bench. The present invention provides a power mechanism, a flip mechanism and a blocking assembly, and after the vehicle reaches a specified position, the power mechanism not only drives the second blocking block to approach the left wheel, but also makes the blocking assembly approach the right wheel with the cooperation of the flip mechanism, so that it is convenient for the blocking assembly to limit the right wheel, so that during the roll test, the wheels on the left and right sides of the wheel can be quickly limited, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile rollover test, and in particular to an automobile rollover test bench and a test method. Background Art

[0002] At present, in the roll test of the car, the maximum roll stability angle requires that when the left side is tilted, all the right wheels are off the ground. At this time, the roll angle is the maximum roll stability angle. At present, the wheel off the ground monitoring method is mainly the wheel load method and the visual method. When the car is conducting a roll test, it is necessary to use a roll test bench to conduct the roll test on the car.

[0003] When the existing roll test bench is in use, it is necessary to limit the tires on the left and right sides of the car to prevent the car from tipping over during the roll test. When limiting the car tires, the current roll test bench first limits the tires on the left side of the car with a block, and then limits the tires on the right side of the car with a chain. Although this achieves the purpose of limiting the overall frame of the car, it is more troublesome in the limiting process, which affects the test efficiency of the car. Therefore, it is necessary to design a car roll test bench. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a vehicle roll test bench and a test method.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vehicle roll test bench, comprising a supporting leg, the upper end of the supporting leg is rotatably connected to the test bench, the right side of the lower end of the test bench is rotatably connected to a hydraulic telescopic rod, the end of the hydraulic telescopic rod away from the test bench is rotatably connected to a base, an angle measuring instrument is fixedly connected to the front end of the test bench, a power mechanism is arranged inside the test bench, a flipping mechanism and a second blocking block are arranged on the upper end of the test bench, the power mechanism is used to provide power for the movement of the second blocking block and the flipping of the flipping mechanism, and a blocking assembly is arranged on the flipping mechanism; a pressure sensor is fixedly connected to the right side of the upper end of the test bench.

[0006] As a further description of the above technical solution:

[0007] The power mechanism includes a first handle, a first screw and a moving seat. A cavity is provided inside the test bench. The first screw is rotatably connected inside the cavity. The circumferential surface of the first screw is threadedly connected to the moving seat. The moving seat is slidably connected to the cavity. The upper end of the moving seat is fixedly connected to the second blocking block; the left end of the first screw is fixedly connected to the first handle.

[0008] As a further description of the above technical solution:

[0009] A square hole is provided on the upper surface of the test bench, and the square hole is connected to the cavity; the movable seat is in an E-shape, and the upper end of the movable seat is located inside the square hole and is slidably connected to the square hole.

[0010] As a further description of the above technical solution:

[0011] The flipping mechanism includes a rack, a gear, a bearing seat, a rotating shaft and a rotating frame. The bearing seat is fixedly connected to the right side of the upper end of the test bench, the rotating shaft is rotatably connected inside the bearing seat, the circumferential surface of the rotating shaft is fixedly connected to the rotating frame, both ends of the rotating shaft are fixedly connected to gears, the lower end of the gear is meshed with a rack, the rack is slidably connected to the test bench, and the rack is fixedly connected to the moving seat.

[0012] As a further description of the above technical solution:

[0013] The right side of the test bench is provided with a limiting groove, the interior of the limiting groove is slidably connected with a limiting bar, and the limiting bar is fixedly connected to the rack.

[0014] As a further description of the above technical solution:

[0015] The blocking assembly includes a fixed frame, a second screw rod, a slider, a second handle and a blocking rod. The end of the rotating frame away from the rotating shaft is fixedly connected to the fixed frame, the second screw rod is rotatably connected inside the fixed frame, the circumferential surface of the second screw rod is threadedly connected to the slider, the side of the slider close to the rotating frame is fixedly connected to the blocking rod, the blocking rod passes through the rotating frame and is slidably connected to the rotating frame; the end of the second screw rod is fixedly connected to the second handle.

[0016] As a further description of the above technical solution:

[0017] A first blocking block is fixedly connected to the upper end of the test bench, and four first blocking blocks are provided, with every two first blocking blocks forming a group, and the two first blocking blocks are symmetrically distributed on the front and rear sides of the pressure sensor.

[0018] A test method for a vehicle roll test bench comprises the following steps:

[0019] S1: Park the test vehicle on the test bench and place the right wheel between the two first blocking blocks;

[0020] S2: Using the power mechanism to drive the second blocking block to approach the left wheel, so that the second blocking block is close to the left side of the left wheel; when the second blocking block approaches the left wheel, the blocking assembly is driven to flip upward with the cooperation of the flip mechanism, so that the blocking assembly is in a horizontal state;

[0021] S3: Turn the second handle so that the blocking rod moves toward the right wheel and is located above the wheel;

[0022] S4: The hydraulic pump provides power to the hydraulic telescopic rod, so that the test bench flips around the supporting leg, and is tested with the cooperation of the angle measuring instrument and the pressure sensor. The pressure sensor is used to determine whether the right tire is lifted. If so, the hydraulic telescopic rod is stopped. At this time, the angle measuring instrument is used to display the angle of the test bench, which is the maximum roll stability angle.

[0023] As a further description of the above technical solution:

[0024] In step S3, the distance between the lower end of the blocking rod and the tire is 1-5CM.

[0025] The present invention has the following beneficial effects:

[0026] 1. Compared with the prior art, the vehicle roll test bench and test method are provided with a power mechanism, a flipping mechanism and a blocking assembly. After the vehicle reaches the specified position, the power mechanism not only drives the second blocking block to approach the left wheel, but also makes the blocking assembly approach the right wheel with the cooperation of the flipping mechanism, thereby facilitating the blocking assembly to limit the right wheel, so that during the roll test, the wheels on the left and right sides can be quickly limited, thereby improving work efficiency.

[0027] 2. Compared with the prior art, the vehicle roll test bench and test method are provided with a fixed frame, a second screw, a slider, a second handle and a blocking rod. After the rotating frame is rotated to a vertical state, the second handle is rotated to drive the slider to move under the action of the second screw, thereby driving the blocking rod to move toward the wheel, so that the blocking rod is located directly above the wheel. In this way, during the vehicle roll test, the vehicle can be effectively prevented from rolling over under the action of the blocking rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A structural schematic diagram of a vehicle roll test bench and a test method proposed by the present invention from a first perspective;

[0029] Figure 2 A vehicle rollover test bench and test method proposed by the present invention Figure 1 Enlarged view of part A;

[0030] Figure 3 A structural schematic diagram of a vehicle roll test bench and a test method proposed by the present invention from a second perspective;

[0031] Figure 4 A vehicle rollover test bench and test method proposed by the present invention Figure 3Enlarged view of part B;

[0032] Figure 5 A schematic diagram of the internal structure of a vehicle roll test bench and a test method proposed by the present invention;

[0033] Figure 6 A vehicle rollover test bench and test method proposed by the present invention Figure 5 Enlarged view of part C.

[0034] Legend:

[0035] 1. Support legs; 2. Test bench; 3. Base; 4. Hydraulic telescopic rod; 5. Power mechanism; 501. First handle; 502. First screw rod; 503. Moving seat; 6. Flipping mechanism; 601. Rack; 602. Gear; 603. Bearing seat; 604. Rotating shaft; 605. Rotating frame; 7. Blocking assembly; 701. Fixed frame; 702. Second screw rod; 703. Sliding block; 704. Second handle; 705. Blocking rod; 8. Angle measuring instrument; 9. Pressure sensor; 10. First blocking block; 11. Second blocking block; 12. Square hole; 13. Limiting groove; 14. Limiting strip; 15. Cavity. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Reference Figure 1-6 The present invention provides a vehicle roll test bench, comprising a support leg 1, the upper end of the support leg 1 is rotatably connected to a test bench 2, the right side of the lower end of the test bench 2 is rotatably connected to a hydraulic telescopic rod 4, the end of the hydraulic telescopic rod 4 away from the test bench 2 is rotatably connected to a base 3, an angle measuring instrument 8 is fixedly connected to the front end of the test bench 2, a power mechanism 5 is arranged inside the test bench 2, a flipping mechanism 6 and a second blocking block 11 are arranged at the upper end of the test bench 2, the power mechanism 5 is used to provide power for the movement of the second blocking block 11 and the flipping of the flipping mechanism 6, and a blocking assembly 7 is arranged on the flipping mechanism 6; a pressure sensor 9 is fixedly connected to the right side of the upper end of the test bench 2.

[0038] Specifically, the test vehicle is first parked on the test bench 2, and the right wheel is located on the pressure sensor 9. Then the power mechanism 5 works, which can not only drive the second blocking block 11 to approach the left wheel, but also drive the blocking assembly 7 to approach the right wheel with the cooperation of the flipping mechanism 6. When the second blocking block 11 is in close contact with the left wheel, the vehicle can be prevented from sliding during the roll test. At the same time, the blocking assembly 7 is extended so that the blocking end of the blocking assembly 7 is located directly above the right wheel. In this way, under the action of the blocking assembly 7, the vehicle can be prevented from tipping over during the roll test; during the roll test, the wheels on the left and right sides of the wheel can be quickly limited, thereby improving work efficiency.

[0039] The power mechanism 5 includes a first handle 501, a first screw rod 502 and a moving seat 503. A cavity 15 is arranged inside the test bench 2. The first screw rod 502 is rotatably connected inside the cavity 15. The moving seat 503 is threadedly connected to the circumferential surface of the first screw rod 502. The moving seat 503 is slidably connected to the cavity 15, and the upper end of the moving seat 503 is fixedly connected to the second blocking block 11; the left end of the first screw rod 502 is fixedly connected to the first handle 501. When working, by rotating the first handle 501, the moving seat 503 can be driven to slide inside the cavity 15 under the action of the first screw rod 502, thereby providing power for the movement of the second blocking block 11 and the flipping of the flipping mechanism 6. When the second blocking block 11 contacts the left wheel, the vehicle can be prevented from sliding.

[0040] A square hole 12 is provided on the upper end surface of the test bench 2, and the square hole 12 is connected to the cavity 15; the movable seat 503 is in an E-shape, and the upper end of the movable seat 503 is located inside the square hole 12 and is slidably connected to the square hole 12. When working, by setting the square hole 12, the movable seat 503 can be easily moved under the action of the square hole 12. At the same time, since the movable seat 503 is in an E-shape, the connection area with the second blocking block 11 can be increased, which is conducive to the stable operation of the second blocking block 11.

[0041] The flip mechanism 6 includes a rack 601, a gear 602, a bearing seat 603, a rotating shaft 604 and a rotating frame 605. The right side of the upper end of the test bench 2 is fixedly connected to the bearing seat 603, the internal rotation of the bearing seat 603 is connected to the rotating shaft 604, the circumferential surface of the rotating shaft 604 is fixedly connected to the rotating frame 605, both ends of the rotating shaft 604 are fixedly connected to the gear 602, the lower end of the gear 602 is meshed with the rack 601, the rack 601 is slidably connected to the test bench 2, and the rack 601 is fixedly connected to the moving seat 503. During operation, when the moving seat 503 moves, the cooperation of the rack 601 and the gear 602 can drive the rotating shaft 604 to rotate inside the bearing seat 603, thereby driving the rotating frame 605 to rotate. When the rotating frame 605 rotates from a horizontal state to a vertical state, it is convenient for the blocking component 7 to block the right wheel. When the rotating frame 605 rotates from a vertical state to a horizontal state, it can drive the blocking component 7 away from the right wheel, thereby facilitating the car to be driven off the test bench 2.

[0042] A limiting groove 13 is provided on the right side of the test bench 2, and a limiting bar 14 is slidably connected inside the limiting groove 13. The limiting bar 14 is fixedly connected to the rack 601. When working, the movement of the rack 601 can be limited by setting the limiting groove 13 and the limiting bar 14, so that the rack 601 can move smoothly.

[0043] The blocking assembly 7 includes a fixed frame 701, a second screw rod 702, a slider 703, a second handle 704 and a blocking rod 705. The end of the rotating frame 605 away from the rotating shaft 604 is fixedly connected to the fixed frame 701, the second screw rod 702 is rotatably connected inside the fixed frame 701, the circumferential surface of the second screw rod 702 is threadedly connected to the slider 703, and the side of the slider 703 close to the rotating frame 605 is fixedly connected to the blocking rod 705. The blocking rod 705 penetrates the rotating frame 605 and is slidably connected to the rotating frame 605; the end of the second screw rod 702 is fixedly connected to the second handle 70 4. During operation, after the rotating frame 605 is rotated to a vertical state, the second handle 704 is rotated to drive the slider 703 to move under the action of the second screw rod 702, thereby driving the blocking rod 705 to move toward the wheel direction, so that the blocking rod 705 is located directly above the wheel. In this way, during the vehicle roll test, the blocking rod 705 can effectively prevent the vehicle from rolling over; at the end of the test, the second handle 704 is rotated in the opposite direction, and the blocking rod 705 can be driven away from the wheel, thereby releasing the restriction on the wheel, which makes it convenient for the vehicle to drive off the test bench 2.

[0044] A first blocking block 10 is fixedly connected to the upper end of the test bench 2. Four first blocking blocks 10 are arranged, and each two first blocking blocks 10 form a group. The two first blocking blocks 10 are symmetrically distributed on the front and rear sides of the pressure sensor 9. When working, by setting the first blocking block 10, the front and rear of the right wheel can be limited under the action of the first blocking block 10 to prevent the vehicle from moving forward and backward. At the same time, the wheel can also be positioned to facilitate the wheel to be located at the upper end of the pressure sensor 9.

[0045] A test method for a vehicle roll test bench comprises the following steps:

[0046] S1: Park the test vehicle on the test bench 2, and place the right wheel between the two first blocking blocks 10;

[0047] S2: The power mechanism 5 drives the second blocking block 11 to approach the left wheel, so that the second blocking block 11 is close to the left side of the left wheel; when the second blocking block 11 approaches the left wheel, the blocking assembly 7 is driven to flip upward with the cooperation of the flip mechanism 6, so that the blocking assembly 7 is in a horizontal state;

[0048] S3: Rotate the second handle 704 so that the blocking rod 705 moves toward the right wheel and the blocking rod 705 is located above the wheel;

[0049] S4: The hydraulic pump provides power to the hydraulic telescopic rod 4, so that the test bench 2 is flipped around the supporting leg 1, and tested with the cooperation of the angle measuring instrument 8 and the pressure sensor 9. The pressure sensor 9 is used to determine whether the right tire is lifted. If so, the hydraulic telescopic rod 4 is stopped. At this time, the angle measuring instrument 8 is used to display the angle of the test bench 2, which is the maximum roll stability angle.

[0050] In step S3 , the distance between the lower end of the blocking rod 705 and the tire is 1-5CM. By keeping the distance between the lower end of the blocking rod 705 and the tire surface within 1-5CM, the tire can be prevented from detaching from the blocking rod 705 .

[0051] Working principle:

[0052] When in use, the test vehicle is first parked on the test bench 2, and the right wheel is positioned on the pressure sensor 9, and then the first handle 501 is rotated. At this time, the movable seat 503 can be driven to slide inside the cavity 15 under the action of the first screw rod 502. The movement of the movable seat 503 not only drives the second blocking block 11 to approach the left wheel, but also drives the rack 601 to move. When the second blocking block 11 is in close contact with the left wheel, the vehicle can be prevented from sliding during the roll test; at the same time, the movement of the rack 601, with the cooperation of the gear 602, can drive the shaft 604 to rotate inside the bearing seat 603, and then drive the rotating frame 605 to rotate. When the rotating frame 605 rotates from the horizontal state to the vertical state, the second handle 704 is rotated, and the slider 703 is driven to move under the action of the second screw rod 702, and then the blocking rod 705 is driven to move in the direction of the wheel, so that the blocking rod 705 is located directly above the wheel. In this way, during the roll test of the vehicle, the vehicle can be effectively prevented from rolling over under the action of the blocking rod 705, thereby protecting the vehicle.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle roll test bench, comprising a support leg (1), characterized in that: The upper end of the support leg (1) is rotatably connected to the test bench (2); the lower right side of the test bench (2) is rotatably connected to a hydraulic telescopic rod (4); the end of the hydraulic telescopic rod (4) away from the test bench (2) is rotatably connected to a base (3); an angle measuring instrument (8) is fixedly connected to the front end of the test bench (2); a power mechanism (5) is provided inside the test bench (2); a flip mechanism (6) and a second blocking block (11) are provided at the upper end of the test bench (2); the power mechanism (5) is used to provide power for the movement of the second blocking block (11) and the flipping of the flip mechanism (6); a blocking assembly (7) is provided on the flip mechanism (6); a pressure sensor (9) is fixedly connected to the right side of the upper end of the test bench (2); The power mechanism (5) comprises a first handle (501), a first screw rod (502) and a movable seat (503); a cavity (15) is arranged inside the test bench (2); the first screw rod (502) is rotatably connected inside the cavity (15); the movable seat (503) is threadedly connected to the circumferential surface of the first screw rod (502); the movable seat (503) is slidably connected to the cavity (15); the upper end of the movable seat (503) is fixedly connected to the second blocking block (11); the left end of the first screw rod (502) is fixedly connected to the first handle (501); The flip mechanism (6) comprises a rack (601), a gear (602), a bearing seat (603), a rotating shaft (604) and a rotating frame (605); the bearing seat (603) is fixedly connected to the right side of the upper end of the test bench (2); the rotating shaft (604) is rotatably connected inside the bearing seat (603); the rotating frame (605) is fixedly connected to the circumferential surface of the rotating shaft (604); both ends of the rotating shaft (604) are fixedly connected to the gear (602); the lower end of the gear (602) is meshed with a rack (601); the rack (601) is slidably connected to the test bench (2); and the rack (601) is fixedly connected to the moving seat (503); The blocking assembly (7) comprises a fixed frame (701), a second screw rod (702), a slider (703), a second handle (704) and a blocking rod (705); one end of the rotating frame (605) away from the rotating shaft (604) is fixedly connected to the fixed frame (701); the second screw rod (702) is rotatably connected inside the fixed frame (701); the circumferential surface of the second screw rod (702) is threadedly connected to the slider (703); a surface of the slider (703) close to the rotating frame (605) is fixedly connected to the blocking rod (705); the blocking rod (705) passes through the rotating frame (605) and is slidably connected to the rotating frame (605); and the end of the second screw rod (702) is fixedly connected to the second handle (704).

2. The vehicle roll test bench according to claim 1, characterized in that: A square hole (12) is provided on the upper end surface of the test bench (2), and the square hole (12) is connected to the cavity (15); the movable seat (503) is in an E-shaped shape, and the upper end of the movable seat (503) is located inside the square hole (12) and is slidably connected to the square hole (12).

3. The vehicle roll test bench according to claim 1, characterized in that: A limiting groove (13) is provided on the right side of the test bench (2), a limiting bar (14) is slidably connected inside the limiting groove (13), and the limiting bar (14) is fixedly connected to the rack (601).

4. The vehicle roll test bench according to claim 1, characterized in that: A first blocking block (10) is fixedly connected to the upper end of the test bench (2), and four first blocking blocks (10) are provided, with two of the first blocking blocks (10) forming a group, and the two first blocking blocks (10) are symmetrically distributed on the front and rear sides of the pressure sensor (9).

5. A test method for a vehicle roll test bench according to any one of claims 1 to 4, characterized in that: The following steps are included: S1: Park the test vehicle on the test bench (2) and place the right wheel between two first blocking blocks (10); S2: using the power mechanism (5) to drive the second blocking block (11) to approach the left wheel, so that the second blocking block (11) is closely attached to the left side of the left wheel; when the second blocking block (11) approaches the left wheel, the blocking assembly (7) is driven to flip upwards with the cooperation of the flipping mechanism (6), so that the blocking assembly (7) is in a horizontal state; S3: rotating the second handle (704) so ​​that the blocking rod (705) moves toward the right wheel and the blocking rod (705) is located above the wheel; S4: The hydraulic pump works to provide power to the hydraulic telescopic rod (4), so that the test bench (2) is turned around the supporting leg (1), and the test is carried out in cooperation with the angle measuring instrument (8) and the pressure sensor (9). The pressure sensor (9) is used to determine whether the right tire is lifted. If so, the hydraulic telescopic rod (4) is stopped. At this time, the angle measuring instrument (8) is used to display the angle of the test bench (2), which is the maximum roll stability angle.

6. The test method of a vehicle roll test bench according to claim 5, characterized in that: In step S3, the distance between the lower end of the blocking rod (705) and the tire is 1-5CM.

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