Vehicle sideslip detection equipment

Abstract

The utility model discloses vehicle sideslip detection equipment, which relates to the technical field of vehicle detection equipment and comprises a frame. The first sliding plate and the second sliding plate can be connected to the frame in a sliding mode in the left-right direction; the transmission rod is arranged between the first sliding plate and the second sliding plate, the front end of the transmission rod is in transmission connection with the first sliding plate, the rear end of the transmission rod is in transmission connection with the second sliding plate, and the middle of the transmission rod is rotatably connected to the frame; the first reset spring and the second reset spring are both used for driving the transmission rod to rotate, so that the transmission rod can be parallel to the front-back direction; the positioning block can extend into the positioning groove, so that the transmission rod is parallel to the front-back direction; and the displacement detection and analysis mechanism is used for detecting the slippage of the first sliding plate and the second sliding plate and analyzing the sideslip performance of the vehicle. The vehicle sideslip detection equipment is beneficial to detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle detection equipment, in particular to a vehicle sideslip detection device. Background Art

[0002] The vehicle side slip detection device is a device used to evaluate the stability and handling performance of a vehicle during lateral movement. It is usually composed of two flat plates connected to each other by a linkage device. This device evaluates the vehicle's side slip performance by simulating the vehicle's side slip situation, which helps manufacturers and testing institutions improve the safety and handling performance of vehicles. The vehicle side slip detection device includes a displacement detection and analysis mechanism and two mutually linked slide plates. The two wheels connected to the vehicle's steering axle will drive the two slide plates to move respectively when entering the vehicle side slip detection device. The displacement detection and analysis mechanism can detect the slip amount of the two slide plates and analyze the vehicle's side slip performance based on the slip amount.

[0003] In the prior art, a vehicle sideslip detection device is provided with a spring for resetting the two slides, so that the vehicle sideslip detection device can return to its initial state for the detection of the next vehicle. The spring is prone to oscillation in the process of driving the two slides to reset, resulting in the two slides being unable to reset quickly. The detection personnel need to wait for the spring to stop oscillating before entering the vehicle sideslip detection device for detection, so as to ensure the detection accuracy of the vehicle sideslip detection device. This method of waiting for the spring to stop oscillating before entering the vehicle sideslip detection device for detection takes a lot of time, which is not conducive to improving the detection efficiency of the vehicle sideslip detection device. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a vehicle sideslip detection device, which is conducive to improving the detection efficiency of the vehicle sideslip detection device.

[0005] The vehicle sideslip detection device according to the embodiment of the utility model comprises:

[0006] frame;

[0007] A first slide plate and a second slide plate, wherein the first slide plate and the second slide plate are both connected to the frame so as to be slidable in the left-right direction, and the first slide plate and the second slide plate are respectively used to abut against two wheels on the steering axle of the vehicle so that the first slide plate and the second slide plate can both slide in the left-right direction;

[0008] a transmission rod, the transmission rod being arranged between the first slide plate and the second slide plate, the front end of the transmission rod being in transmission connection with the first slide plate, the rear end of the transmission rod being in transmission connection with the second slide plate, and the middle part of the transmission rod being rotatably connected to the frame, so that the first slide plate and the second slide plate can be moved closer to or farther away from each other;

[0009] a first return spring and a second return spring, wherein the right end of the first return spring is connected to the frame, the left end of the first return spring is connected to the rear end of the transmission rod, the left end of the second return spring is connected to the frame, and the right end of the second return spring is connected to the front end of the transmission rod, and the first return spring and the second return spring are both used to drive the transmission rod to rotate so that the transmission rod can be parallel to the front and rear directions;

[0010] A linear drive, a positioning block and a positioning slot, wherein the linear drive is arranged on the frame, the linear drive is arranged behind the transmission rod, the positioning slot is arranged on the rear end of the transmission rod, the output end of the linear drive is connected to the positioning block, the linear drive is used to drive the positioning block to move in the front-rear direction, the positioning block can extend into the positioning slot and abut against the left and right side walls of the positioning slot, so that the transmission rod is parallel to the front-rear direction;

[0011] A displacement detection and analysis mechanism is used to detect the slippage of the first slide plate and the second slide plate and analyze the side slip performance of the vehicle.

[0012] At least the following beneficial effects are achieved:

[0013] When it is necessary to detect the side slip performance of the vehicle, the inspector can drive the vehicle from the back to the front into the vehicle side slip detection device, so that the two wheels on the steering bridge of the vehicle are respectively in contact with the first slide plate and the second slide plate on the vehicle side slip detection device. When the vehicle side slips during driving, the two wheels on the steering bridge of the vehicle will drive the first slide plate and the second slide plate to slide in the left and right directions, so that the first slide plate and the second slide plate will drive the transmission rod to rotate. Since the first slide plate and the second slide plate are connected by the transmission rod, the rotating transmission rod makes the first slide plate and the second slide plate approach or move away from each other. During the rotation of the transmission rod, the second return spring and the first return spring respectively connected to the front and rear ends of the transmission rod will be compressed or stretched. The displacement detection and analysis mechanism can detect the slip amount of the first slide plate and the second slide plate in real time, and analyze the side slip performance of the vehicle based on the detected slip amount of the first slide plate and the second slide plate.

[0014] When the vehicle detection is completed and the vehicle leaves the vehicle side slip detection device, the first slide plate and the second slide plate are separated from the contact with the two wheels on the vehicle steering axle, and the first return spring and the second return spring will stretch or contract, that is, the first return spring and the second return spring begin to rebound. Under the rebound force of the first return spring and the second return spring, the transmission rod begins to rotate and drives the first and second slide plates to slide. Finally, under the rebound force of the first return spring and the second return spring, the transmission rod can be parallel to the front and rear directions, and the first and second slide plates are reset. In the process of the rebound force of the first return spring and the second return spring driving the transmission rod to rotate, the linear drive member drives the positioning block to move forward and extends the positioning block into the positioning groove on the rear end of the transmission rod, so that the positioning block can abut against the left and right side walls of the positioning groove. Under the limiting action of the positioning block, the transmission rod can quickly stop shaking and be in a state parallel to the front and rear directions. The transmission rod that stops shaking can also stop the first return spring and the second return spring from oscillating, thereby allowing the first slide plate and the second slide plate to be quickly reset, so that the inspection personnel can drive the next vehicle to be inspected into the vehicle sideslip detection equipment, avoiding long waits for the first slide plate and the second slide plate to reset, which is beneficial to improving the detection efficiency of the vehicle sideslip detection device.

[0015] According to the vehicle sideslip detection device of the embodiment of the utility model, the positioning block is a frustum, the axis of the frustum is parallel to the front-rear direction, and the frustum gradually shrinks from the back to the front.

[0016] According to the vehicle sideslip detection device of the embodiment of the utility model, the left and right side walls of the positioning groove gradually shrink from the back to the front.

[0017] According to the vehicle sideslip detection device of the embodiment of the utility model, it also includes a guide rod and a guide block, the guide block is arranged on the frame, a guide hole is opened on the guide block, the guide rod is parallel to the front and rear directions, the front and rear ends of the guide rod are respectively connected to the positioning block and the output end of the linear drive component, and the guide rod is inserted into the guide hole.

[0018] According to the vehicle sideslip detection device of the embodiment of the utility model, it also includes a first release plate and a second release plate, and the first release plate and the second release plate can be slidably connected to the frame in the left and right directions. The first release plate is arranged behind the first slide plate, and the second release plate is arranged behind the second slide plate. The first release plate and the second release plate are respectively used to abut against the two wheels on the steering axle of the vehicle so that the first release plate and the second release plate can both slide in the left and right directions.

[0019] According to the vehicle sideslip detection device of the embodiment of the utility model, the upper surfaces of the first release plate and the second release plate are both provided with a first anti-skid structure, and the first release plate and the second release plate are respectively abutted against the two wheels on the steering axle of the vehicle through the first anti-skid structure.

[0020] According to the vehicle sideslip detection device of the embodiment of the utility model, the upper surfaces of the first slide plate and the second slide plate are both provided with a second anti-skid structure, and the first slide plate and the second slide plate are respectively abutted against two wheels on the steering axle of the vehicle through the second anti-skid structure.

[0021] According to the vehicle sideslip detection device of the embodiment of the utility model, it also includes a first connecting rod and a second connecting rod, the right end of the first connecting rod is rotatably connected to the first slide plate, the left end of the first connecting rod is rotatably connected to the front end of the transmission rod, the left end of the second connecting rod is rotatably connected to the second slide plate, and the right end of the second connecting rod is rotatably connected to the rear end of the transmission rod.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a vehicle sideslip detection device according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of a vehicle sideslip detection device according to an embodiment of the utility model;

[0026] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0027] Figure 4 It is a schematic diagram of the local structure of the vehicle sideslip detection device in the embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of a transmission rod, a positioning block and a guide rod in a vehicle sideslip detection device according to an embodiment of the utility model;

[0029] Reference numerals:

[0030] A first slide plate 100; a first release plate 110; a first return spring 120;

[0031] The second slide plate 200; the second release plate 210; the second return spring 220;

[0032] Transmission rod 300; first connecting rod 310; second connecting rod 320;

[0033] Linear drive member 400; positioning block 410; positioning slot 420; guide block 430; guide rod 440;

[0034] Frame 500. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0040] refer to Figures 1 to 5 The vehicle sideslip detection device of the utility model comprises:

[0041] Frame 500;

[0042] A first slide plate 100 and a second slide plate 200, both of which are connected to the frame 500 so as to slide in the left-right direction, and the first slide plate 100 and the second slide plate 200 are respectively used to abut against two wheels on the steering axle of the vehicle so that both of the first slide plate 100 and the second slide plate 200 can slide in the left-right direction;

[0043] The transmission rod 300 is disposed between the first slide plate 100 and the second slide plate 200. The front end of the transmission rod 300 is in transmission connection with the first slide plate 100, and the rear end of the transmission rod 300 is in transmission connection with the second slide plate 200. The middle part of the transmission rod 300 is rotatably connected to the frame 500, so that the first slide plate 100 and the second slide plate 200 can be moved closer to or farther from each other.

[0044] A first return spring 120 and a second return spring 220, the right end of the first return spring 120 is connected to the frame 500, the left end of the first return spring 120 is connected to the rear end of the transmission rod 300, the left end of the second return spring 220 is connected to the frame 500, and the right end of the second return spring 220 is connected to the front end of the transmission rod 300. The first return spring 120 and the second return spring 220 are both used to drive the transmission rod 300 to rotate so that the transmission rod 300 can be parallel to the front and rear directions;

[0045] A linear drive member 400, a positioning block 410 and a positioning slot 420, wherein the linear drive member 400 is disposed on the frame 500, and the linear drive member 400 is disposed behind the transmission rod 300, and the positioning slot 420 is disposed on the rear end of the transmission rod 300, and the output end of the linear drive member 400 is connected to the positioning block 410, and the linear drive member 400 is used to drive the positioning block 410 to move in the front-rear direction, and the positioning block 410 can extend into the positioning slot 420 and abut against the left and right side walls of the positioning slot 420, so that the transmission rod 300 is parallel to the front-rear direction;

[0046] The displacement detection and analysis mechanism is used to detect the slippage of the first slide plate 100 and the second slide plate 200 and analyze the side slip performance of the vehicle.

[0047] It is understandable that when it is necessary to detect the side slip performance of the vehicle, the tester can drive the vehicle from the back to the front into the vehicle side slip detection device, so that the two wheels on the steering bridge of the vehicle are respectively in contact with the first slide plate 100 and the second slide plate 200 on the vehicle side slip detection device. When the vehicle side slips during driving, the two wheels on the steering bridge of the vehicle will drive the first slide plate 100 and the second slide plate 200 to slide in the left and right directions, so that the first slide plate 100 and the second slide plate 200 will drive the transmission rod 300 to rotate. Since the first slide plate 100 and the second slide plate 200 are connected by the transmission rod 300, the rotating transmission rod 300 makes the first slide plate 100 and the second slide plate 200 approach or move away from each other. During the rotation of the transmission rod 300, the second return spring 220 and the first return spring 120 respectively connected to the front and rear ends of the transmission rod 300 will be compressed or stretched. The displacement detection and analysis mechanism can detect the slip amount of the first slide plate 100 and the second slide plate 200 in real time, and analyze the side slip performance of the vehicle according to the detected slip amount of the first slide plate 100 and the second slide plate 200.

[0048] When the vehicle detection is completed and the vehicle leaves the vehicle side slip detection device, the first slide plate 100 and the second slide plate 200 are separated from the contact with the two wheels on the vehicle steering axle, and the first return spring 120 and the second return spring 220 will stretch or shrink, that is, the first return spring 120 and the second return spring 220 begin to rebound. Under the rebound force of the first return spring 120 and the second return spring 220, the transmission rod 300 begins to rotate and drives the first slide plate 100 and the second slide plate 200 to slide. Finally, under the rebound force of the first return spring 120 and the second return spring 220, the transmission rod 300 can be parallel to the front and rear directions, and the first slide plate 100 and the second slide plate 200 are reset. In the process of the rebound force of the first return spring 120 and the second return spring 220 driving the transmission rod 300 to rotate, the linear drive member 400 drives the positioning block 410 to move forward and extends the positioning block 410 into the positioning groove 420 on the rear end of the transmission rod 300, so that the positioning block 410 can abut against the left and right side walls of the positioning groove 420. Under the limiting action of the positioning block 410, the transmission rod 300 can quickly stop shaking and be in a state parallel to the front and rear directions. The transmission rod 300 that stops shaking can also stop the first return spring 120 and the second return spring 220 from oscillating, thereby allowing the first slide plate 100 and the second slide plate 200 to be quickly reset, so that the inspection personnel can drive the next vehicle to be inspected into the vehicle sideslip detection equipment, avoiding a long wait for the first slide plate 100 and the second slide plate 200 to reset, which is beneficial to improving the detection efficiency of the vehicle sideslip detection device.

[0049] It should be explained that, in the present invention, when the transmission rod 300 is placed parallel to the front-rear direction, the first slide plate 100 and the second slide plate 200 are both in a reset state. In the present invention, in actual driving, when the vehicle skids, it is usually caused by the uneven friction generated by the left and right wheels of the vehicle when they come into contact with the road surface. Therefore, through the transmission connection between the first slide plate 100 and the second slide plate 200, the actual situation when the vehicle moves sideways can be simulated, and the side-slip performance of the vehicle can be more accurately evaluated. The transmission mode of the first slide plate 100 and the second slide plate 200 approaching and moving away from each other is mainly to simulate the different friction distributions between the wheels and the road surface when the vehicle moves sideways, so as to more accurately evaluate the side-slip performance and stability of the vehicle.

[0050] As an embodiment of the present invention, the displacement detection and analysis mechanism includes a displacement sensor and a processor, and the displacement sensor and the processor are electrically connected. The displacement sensor is used to detect the slip amount of the first slide plate 100 and the second slide plate 200, and the displacement sensor transmits the detected slip amount data to the processor, and the processor can calculate the side slip performance of the vehicle according to the received slip amount data.

[0051] refer to Figures 3 to 5 The positioning block 410 is a truncated cone, the axis of which is parallel to the front-rear direction, and the truncated cone gradually shrinks from the back to the front. It is understandable that the truncated cone shrinking from the back to the front can more easily extend into the positioning groove 420 on the rear end of the transmission rod 300, so that the truncated cone can stop the rotation of the transmission rod more quickly, thereby enabling the first slide 100 and the second slide 200 to be reset more quickly.

[0052] refer to Figure 5 , the left and right side walls of the positioning groove 420 gradually shrink from the back to the front. It can be understood that the left and right side walls of the positioning groove 420 gradually shrink from the back to the front, that is, the opening of the positioning groove 420 toward the rear is larger, so that the truncated cone can be more easily inserted into the positioning groove 420. On the other hand, the left and right side walls of the positioning groove 420 gradually shrink from the back to the front, and after the truncated cone is inserted into the positioning groove 420, the left and right side walls of the positioning groove 420 can be more closely abutted against the side walls of the truncated cone, increasing the contact area between the side walls of the truncated cone and the left and right side walls of the positioning groove 420, that is, increasing the force of the truncated cone on the transmission rod 300, so that the transmission rod 300 can quickly stop rotating and be parallel to the front-to-back direction.

[0053] refer to Figure 4 and Figure 5The vehicle side slip detection device also includes a guide rod 440 and a guide block 430. The guide block 430 is arranged on the frame 500. A guide hole is opened on the guide block 430. The guide rod 440 is parallel to the front-to-back direction. The front and rear ends of the guide rod 440 are respectively connected to the positioning block 410 and the output end of the linear drive member 400. The guide rod 440 is inserted into the guide hole. It can be understood that the guide rod 440 is inserted into the guide hole. The front and rear ends of the guide rod 440 are respectively connected to the positioning block 410 and the output end of the linear drive member 400. In the process of the guide rod 440 driving the positioning block 410 to move along the front-to-back direction, the hole wall of the guide hole can play a positioning role for the guide rod 440, so as to prevent the rotation of the transmission rod 300 from causing the guide rod 440 and the positioning block 410 to shake, so that the positioning block 410 can quickly stop the rotation of the transmission rod 300.

[0054] refer to Figure 1 and Figure 2 The vehicle side slip detection device also includes a first release plate 110 and a second release plate 210. The first release plate 110 and the second release plate 210 can be connected to the frame 500 in a sliding manner in the left and right directions. The first release plate 110 is arranged behind the first slide plate 100, and the second release plate 210 is arranged behind the second slide plate 200. The first release plate 110 and the second release plate 210 are respectively used to abut against the two wheels on the steering axle of the vehicle, so that the first release plate 110 and the second release plate 210 can slide in the left and right directions. It can be understood that when the detection personnel drive the vehicle into the vehicle side slip detection device from the back to the front, the two wheels on the steering axle of the vehicle will first abut against the first release plate 110 and the second release plate 210, and then abut against the first slide plate 100 and the second slide plate 200, respectively. Both the first relaxation plate 110 and the second relaxation plate 210 can release the stress of the wheels. When the vehicle skids, the friction between the wheels and the ground will change, and the stress between the wheels and the ground will be reduced or released. The first relaxation plate 110 and the second relaxation plate 210 can simulate this relaxation phenomenon to more accurately evaluate the stability and handling performance of the vehicle when skidding.

[0055] As an embodiment of the utility model, the upper surfaces of the first release plate 110 and the second release plate 210 are both provided with a first anti-skid structure, and the first release plate 110 and the second release plate 210 are respectively in contact with the two wheels on the steering axle of the vehicle through the first anti-skid structure. The upper surfaces of the first slide plate 100 and the second slide plate 200 are both provided with a second anti-skid structure, and the first slide plate 100 and the second slide plate 200 are respectively in contact with the two wheels on the steering axle of the vehicle through the second anti-skid structure. It can be understood that the first anti-skid structure can increase the friction between the first release plate 110 and the second release plate 210 and the wheels, and the second anti-skid structure can increase the friction between the first slide plate 100 and the second slide plate 200 and the wheels, thereby preventing the wheels from slipping during the test, which is beneficial to improving the detection accuracy of the vehicle side slip detection device.

[0056] refer to Figures 3 to 5 The vehicle side slip detection device further includes a first link 310 and a second link 320, the right end of the first link 310 is rotatably connected to the first slide 100, the left end of the first link 310 is rotatably connected to the front end of the transmission rod 300, the left end of the second link 320 is rotatably connected to the second slide 200, and the right end of the second link 320 is rotatably connected to the rear end of the transmission rod 300. It can be understood that the first slide 100 is transmission-connected to the transmission rod 300 through the first link 310, and the second slide 200 is transmission-connected to the transmission rod 300 through the second link 320, so that the first slide 100 and the second slide 200 are transmission-connected through the first link 310, the transmission rod 300, and the second link 320, so that the first slide 100 and the second slide 200 can be close to or away from each other, that is, the first slide 100 can drive the second slide 200 to move, and the second slide 200 can also drive the first slide 100 to move.

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A vehicle sideslip detection device, characterized in that: include: frame(500); A first slide plate (100) and a second slide plate (200), wherein the first slide plate (100) and the second slide plate (200) are both connected to the frame (500) in a sliding manner in the left-right direction, and the first slide plate (100) and the second slide plate (200) are respectively used to abut against two wheels on a steering axle of a vehicle so that the first slide plate (100) and the second slide plate (200) can both slide in the left-right direction; a transmission rod (300), the transmission rod (300) being arranged between the first slide plate (100) and the second slide plate (200), the front end of the transmission rod (300) being transmission-connected to the first slide plate (100), the rear end of the transmission rod (300) being transmission-connected to the second slide plate (200), and the middle part of the transmission rod (300) being rotatably connected to the frame (500), so that the first slide plate (100) and the second slide plate (200) can be moved closer to or farther away from each other; a first return spring (120) and a second return spring (220), wherein the right end of the first return spring (120) is connected to the frame (500), the left end of the first return spring (120) is connected to the rear end of the transmission rod (300), the left end of the second return spring (220) is connected to the frame (500), and the right end of the second return spring (220) is connected to the front end of the transmission rod (300), and the first return spring (120) and the second return spring (220) are both used to drive the transmission rod (300) to rotate so that the transmission rod (300) can be parallel to the front-rear direction; A linear drive member (400), a positioning block (410) and a positioning groove (420), wherein the linear drive member (400) is arranged on the frame (500), the linear drive member (400) is arranged behind the transmission rod (300), the positioning groove (420) and the transmission rod (300) are arranged on the rear end, the output end of the linear drive member (400) is connected to the positioning block (410), the linear drive member (400) is used to drive the positioning block (410) to move in the front-rear direction, the positioning block (410) can extend into the positioning groove (420) and abut against the left and right side walls of the positioning groove (420), so that the transmission rod (300) is parallel to the front-rear direction; A displacement detection and analysis mechanism is used to detect the slippage of the first slide plate (100) and the second slide plate (200) and analyze the side slip performance of the vehicle.

2. The vehicle sideslip detection device according to claim 1, characterized in that: The positioning block (410) is a truncated cone, the axis of which is parallel to the front-rear direction, and the truncated cone gradually shrinks from the back to the front.

3. The vehicle sideslip detection device according to claim 2, characterized in that: The left and right side walls of the positioning groove (420) gradually shrink from the back to the front.

4. The vehicle sideslip detection device according to claim 1, characterized in that: The invention also comprises a guide rod (440) and a guide block (430), wherein the guide block (430) is arranged on the frame (500), a guide hole is provided on the guide block (430), the guide rod (440) is parallel to the front-rear direction, the front and rear ends of the guide rod (440) are respectively connected to the positioning block (410) and the output end of the linear drive member (400), and the guide rod (440) is inserted into the guide hole.

5. The vehicle sideslip detection device according to claim 1, characterized in that: The vehicle further comprises a first release plate (110) and a second release plate (210), wherein the first release plate (110) and the second release plate (210) are both connected to the frame (500) in a sliding manner in the left-right direction, wherein the first release plate (110) is arranged behind the first slide plate (100), and the second release plate (210) is arranged behind the second slide plate (200), and the first release plate (110) and the second release plate (210) are respectively used to abut against two wheels on the steering axle of the vehicle, so that the first release plate (110) and the second release plate (210) can both slide in the left-right direction.

6. The vehicle sideslip detection device according to claim 5, characterized in that: The upper surfaces of the first release plate (110) and the second release plate (210) are both provided with a first anti-skid structure, and the first release plate (110) and the second release plate (210) are respectively in contact with two wheels on the steering axle of the vehicle through the first anti-skid structure.

7. The vehicle sideslip detection device according to claim 1, characterized in that: The upper surfaces of the first slide plate (100) and the second slide plate (200) are both provided with a second anti-skid structure, and the first slide plate (100) and the second slide plate (200) are respectively in contact with two wheels on the steering axle of the vehicle through the second anti-skid structure.

8. The vehicle sideslip detection device according to claim 1, characterized in that: The first connecting rod (310) and the second connecting rod (320) are also included. The right end of the first connecting rod (310) is rotatably connected to the first sliding plate (100), and the left end of the first connecting rod (310) is rotatably connected to the transmission rod (300). The left end of the second connecting rod (320) is rotatably connected to the second sliding plate (200). The right end of the second connecting rod (320) is rotatably connected to the rear end of the transmission rod (300).

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