Motor vehicle safety detection device

Abstract

The invention discloses a motor vehicle safety detection device, and belongs to the technical field of motor vehicle detection, the motor vehicle safety detection device comprises a support frame, the left end and the right end of the support frame are connected with self-adjusting slope parking detection assemblies, and the left end and the right end of each self-adjusting slope parking detection assembly are connected with self-abdicating anti-slip assemblies. A motor vehicle is conveyed to the self-adjusting slope parking detection assembly, and at the moment, the self-adjusting slope parking detection assembly carries out uphill and downhill parking detection on the motor vehicle at any gradient. The self-adjusting slope parking detection assembly drives the self-receding anti-sliding assembly to move to the front side and the rear side of the motor vehicle to block and support the motor vehicle while parking detection is conducted on the motor vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of motor vehicle detection, and particularly to a motor vehicle safety detection device. Background Art

[0002] Motor vehicle detection is a series of inspections and tests on vehicles to ensure the safety, legality, and environmental friendliness of vehicles when driving on the road. Among them, motor vehicle braking detection and motor vehicle brake detection are important links to ensure the driving safety of motor vehicles.

[0003] However, most of the existing technology detection devices only detect the motor vehicle when going uphill during the ramp parking detection of the motor vehicle and do not detect when going downhill. And when the ramp slope is relatively large, the motor vehicle may hit the rear of the motor vehicle when it slides down, thus causing damage to the motor vehicle.

[0004] Based on this, the present invention designs a motor vehicle safety detection device to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned drawbacks of the existing technology, the present invention provides a motor vehicle safety detection device.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] A motor vehicle safety detection device includes a support frame;

[0008] The left and right ends of the support frame are connected with self-adjusting ramp parking detection components for parking tests of motor vehicles with various slopes;

[0009] Both the left and right ends of the self-adjusting ramp parking detection components are connected with self-yielding anti-slip components for automatically adjusting the position to buffer and support the sliding motor vehicle;

[0010] The middle part of the support frame is connected with a self-ejecting braking detection component that is linked with the self-adjusting ramp parking detection component to perform braking detection on the motor vehicle and automatically eject;

[0011] The self-adjusting ramp parking detection component includes an adjustment drive component and a ramp support component. The middle parts of the left and right ends of the support frame are connected with the adjustment drive component, the upper sides of the left and right ends of the support frame are connected with the ramp support component, and the lower end of the ramp support component is connected with the adjustment drive component.

[0012] Furthermore, the adjustment driving assembly includes a motor, a first threaded rod, a first limit guiding rod, and an adjustment push plate. A motor is fixedly connected to the middle of the right end of the support frame. The output end of the motor is fixedly connected to the first threaded rod. The left end of the support frame is rotatably connected to the first threaded rod. The front and rear ends of the support frame are both fixedly connected with a first limit guiding rod. One end of each of the two first threaded rods away from each other passes through a set of adjustment push plates and is threadedly connected to the adjustment push plate. The front and rear ends of the adjustment push plate are both passed through by a set of first limit guiding rods and are slidably connected to the first limit guiding rods. A self-ejecting braking detection assembly is connected between the two first threaded rods.

[0013] Furthermore, the ramp support assembly includes a rotating support plate, a hinge seat, and a linkage push rod. There is a set of rotating support plates on the upper sides of the left and right ends of the support frame. One end of each of the two rotating support plates away from each other is rotatably connected to the support frame. The front and rear ends of the adjustment push plate are both rotatably connected with a linkage push rod. One end of the linkage push rods on the two adjustment push plates close to each other is rotatably connected with a hinge seat. The top of the hinge seat is fixedly connected to the rotating support plate.

[0014] Furthermore, the self-giving-way anti-falling component includes a self-giving-way driving component and an anti-falling support component. The mutually remote ends of the rotating support plates are both connected with a self-giving-way driving component, and the upper ends of the self-giving-way driving components are both connected with an anti-falling support component.

[0015] Furthermore, the self-giving-way driving component includes an installation groove, a fixed gear, a moving gear, and a bidirectional threaded rod. Installation grooves are respectively opened on the front and rear sides of the mutually remote ends of the motor. The bidirectional threaded rod passes through the two installation grooves and is rotatably connected to the side walls of the installation grooves. Moving gears are fixedly connected to the front and rear ends of the bidirectional threaded rod. Fixed gears are fixedly connected to the front and rear ends of the rotating shaft of the rotating support plate. The fixed gear is meshed with the moving gear.

[0016] Furthermore, the anti-falling support component includes a support sliding column and a pressure detection rubber pad. Each installation groove is slidably connected to the lower end of the support sliding column. A bidirectional threaded rod passes through the support sliding column at the lower end of each support sliding column and is threadedly connected to the support sliding column. A pressure detection rubber pad is fixedly connected to one end of the support sliding column close to the rotating support plate.

[0017] Furthermore, the pressure detection rubber pad is electrically connected to the motor.

[0018] Furthermore, the self-ejecting braking detection assembly includes an ejecting driving component and an ejecting detection component. An ejecting driving component is connected to the middle of the support frame. The upper end of the ejecting driving component is connected with an ejecting detection component. The upper end of the ejecting detection component is connected to the support frame.

[0019] Further, the ejection driving assembly includes a second threaded rod, a driving push block and an ejection push block. A second threaded rod is fixedly connected between two groups of first threaded rods. The second threaded rod passes through the driving push block and is threadedly connected to the driving push block. The first limit guiding rod passes through the driving push block and is slidably connected to the driving push block. Ejection push blocks are fixedly connected to both the front and rear sides of the upper end of the driving push block.

[0020] Further, the ejection detection assembly includes an installation groove, a detection roller, a T-shaped ejection block, a second limit guiding rod and a spring. Installation grooves are formed in the top plates of the support frames above the ejection push blocks. Detection rollers are rotatably connected to both the left and right ends between the front and rear side walls of the installation grooves. There is a group of T-shaped ejection blocks between two groups of detection rollers in the same installation groove. The lower end of the T-shaped ejection block is slidably connected to the ejection push block. A second limit guiding rod passes through the T-shaped ejection block and is slidably connected to the T-shaped ejection block at both the front and rear ends of the horizontal plate of the T-shaped ejection block. The tops of the second limit guiding rods are fixedly connected to the inner top of the support frame. Springs are fixedly connected between the T-shaped ejection blocks on the outer sides of the second limit guiding rods and the inner top of the support frame.

[0021] The present invention has the following technical effects:

[0022] 1. When it is necessary to detect a motor vehicle, the motor vehicle is transported to the right rotating support plate through the support frame. At this time, the motor is started, and the motor drives the first threaded rod to rotate. The first threaded rod drives the two sets of adjusting push plates to move towards each other. The adjusting push plates push the rotating support plate to rotate through the linkage push rod and the hinge seat, so as to adjust the parking slope of the motor vehicle, realizing the detection of the motor vehicle parking at different slopes. When the rotating support plate rotates, it drives the fixed gear to rotate. The fixed gear drives the bidirectional threaded rod to rotate through the moving gear. The bidirectional threaded rod simultaneously drives the two sets of support sliding columns to slide towards each other, so that the support sliding columns drive the pressure detection rubber pad to move to the rear of the motor vehicle. Thus, when the rotating support plate rotates to a higher slope, the motor vehicle begins to slide. When the motor vehicle slides to contact the pressure detection rubber pad, at this time, the pressure detection rubber pad transmits a signal to the motor to make the motor stop operating. The blocking of the pressure detection rubber pad realizes the prevention of the motor vehicle from sliding down, and further avoids the collision of the motor vehicle tail when the motor vehicle slides down. And when the motor vehicle slides down and contacts the pressure detection rubber pad, the motor stops operating at the same time, so that the maximum slope at which the motor vehicle can park can be obtained. When the uphill parking detection of the motor vehicle is completed, the rotating support plate is lowered and the motor vehicle is transported to the middle position of the top plate of the support frame. At this time, the front wheels of the motor vehicle are placed between the two sets of detection rollers. At this time, the next motor vehicle to be detected is transported to the right rotating support plate. At this time, the motor is started, and the motor drives the rotating support plate to rise while driving the second threaded rod to rotate. The second threaded rod drives the driving push block to move to the right. The driving push block drives the ejecting push block to move to the right. When the ejecting push block moves away from the T-shaped ejecting block, the T-shaped ejecting block moves downward under the action of the spring restoring force. At this time, the braking detection of the motor vehicle can be carried out. When the detection of the motor vehicle is completed, the motor is started, and the motor drives the ejecting push block to move to the left. The ejecting push block drives the T-shaped ejecting block to move upward. The T-shaped ejecting block moves upward to contact the front wheels of the motor vehicle and push the motor vehicle upward to disengage from the detection rollers. At this time, the motor vehicle can be transported to the left rotating support plate and the next group of motor vehicles can be parked on the detection rollers. At this time, the motor is started, and the motor drives the left rotating support plate to rotate. At this time, the downhill parking of the motor vehicle can be detected through the rotating support plate. When detecting the downhill parking of the motor vehicle, the left pressure detection rubber pad moves to the front of the motor vehicle, so as to realize the detection of both the uphill and downhill of the motor vehicle. And because of the automatic blocking of the pressure detection rubber pad, there is no need to worry about the motor vehicle sliding and touching other motor vehicles, so that three motor vehicles can be detected at the same time, ensuring the detection efficiency. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 The three-dimensional view of a motor vehicle safety detection device of the present invention Figure 1 ;

[0025] Figure 2 The three-dimensional view of a motor vehicle safety detection device of the present invention Figure 2 ;

[0026] Figure 3 The schematic structural diagram of the linkage push rod of a motor vehicle safety detection device of the present invention;

[0027] Figure 4 The schematic structural diagram of the pressure detection rubber pad of a motor vehicle safety detection device of the present invention;

[0028] Figure 5 For Figure 4 The enlarged view at A in

[0029] Figure 6 The schematic structural diagram of the driving push block of a motor vehicle safety detection device of the present invention;

[0030] Figure 7 The schematic structural diagram of the detection rotating roller of a motor vehicle safety detection device of the present invention.

[0031] The reference numerals in the figure respectively represent:

[0032] 1. Support frame; 2. Self-adjusting ramp parking detection component; 21. Adjusting driving component; 211. Motor; 212. First threaded rod; 213. First limit guiding rod; 214. Adjusting push plate; 22. Ramp support component; 221. Rotating support plate; 222. Hinge seat; 223. Linkage push rod; 3. Self-yielding anti-slip component; 31. Self-yielding driving component; 311. Installation groove; 312. Fixed gear; 313. Moving gear; 314. Bidirectional threaded rod; 32. Anti-slip support component; 321. Support sliding column; 322. Pressure detection rubber pad; 4. Self-ejecting braking detection component; 41. Ejecting driving component; 411. Second threaded rod; 412. Driving push block; 413. Ejecting push block; 42. Ejecting detection component; 421. Installation groove; 422. Detection rotating roller; 423. T-shaped ejecting block; 424. Second limit guiding rod; 425. Spring. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Embodiment 1

[0036] Please refer to the attached specification Figures 1-7 , a motor vehicle safety detection device, including a support frame 1;

[0037] Self-adjusting slope parking detection components 2 for parking tests of motor vehicles with various slopes are connected to the left and right ends of the support frame 1;

[0038] Self-yielding anti-slip components 3 for automatically adjusting the position to buffer and support the sliding motor vehicle are connected to both the left and right ends of the self-adjusting slope parking detection components 2;

[0039] A self-ejecting braking detection component 4 that is linked with the self-adjusting slope parking detection component 2 to perform braking detection on the motor vehicle and automatically eject is connected to the middle of the support frame 1;

[0040] The self-adjusting slope parking detection component 2 includes an adjustment driving component 21 and a slope support component 22. The adjustment driving component 21 is connected to the middle of the left and right ends of the support frame 1, the slope support component 22 is connected to the upper sides of the left and right ends of the support frame 1, and the lower end of the slope support component 22 is connected to the adjustment driving component 21;

[0041] The adjustment driving component 21 includes a motor 211, a first threaded rod 212, a first limit guiding rod 213, and an adjustment push plate 214. The motor 211 is fixedly connected to the middle of the right end of the support frame 1, the output end of the motor 211 is fixedly connected to the first threaded rod 212, the first threaded rod 212 is rotatably connected to the left end of the support frame 1, the first limit guiding rods 213 are fixedly connected to both the front and rear ends of the support frame 1, one end of each of the two groups of first threaded rods 212 away from each other passes through a group of adjustment push plates 214 and is threadedly connected to the adjustment push plate 214, the front and rear ends of the adjustment push plate 214 are passed through by a group of first limit guiding rods 213 and are slidably connected to the first limit guiding rods 213, and the self-ejecting braking detection component 4 is connected between the two groups of first threaded rods 212;

[0042] The slope support assembly 22 includes a rotating support plate 221, a hinge seat 222, and a linkage push rod 223. On the upper sides of the left and right ends of the support frame 1, there is a set of rotating support plates 221. The mutually remote ends of the two sets of rotating support plates 221 are rotatably connected to the support frame 1. The front and rear ends of the adjusting push plate 214 are rotatably connected to a linkage push rod 223. The mutually close ends of the linkage push rods 223 on the two adjusting push plates 214 are rotatably connected to a hinge seat 222. The top of the hinge seat 222 is fixedly connected to the rotating support plate 221;

[0043] The self - yielding and anti - slipping component 3 includes a self - yielding drive component 31 and an anti - slipping support component 32. The mutually remote ends of the rotating support plates 221 are each connected to a self - yielding drive component 31. The upper ends of the self - yielding drive components 31 are each connected to an anti - slipping support component 32;

[0044] The self - yielding drive component 31 includes an installation groove 311, a fixed gear 312, a moving gear 313, and a bidirectional threaded rod 314. On the front and rear sides of the mutually remote ends of the motor 211, installation grooves 311 are opened. The bidirectional threaded rod 314 passes through the two installation grooves 311 and is rotatably connected to the side walls of the installation grooves 311. The front and rear ends of the bidirectional threaded rod 314 are each fixedly connected to a moving gear 313. The front and rear ends of the rotating shaft of the rotating support plate 221 are each fixedly connected to a fixed gear 312. The fixed gear 312 is meshed with the moving gear 313;

[0045] The anti - slipping support component 32 includes a support sliding column 321 and a pressure - detecting rubber pad 322. Each installation groove 311 is slidably connected to the lower end of the support sliding column 321. The lower ends of the support sliding columns 321 are each penetrated by a bidirectional threaded rod 314 and are threadedly connected to the support sliding columns 321. The ends of the support sliding columns 321 close to the rotating support plate 221 are each fixedly connected to a pressure - detecting rubber pad 322;

[0046] The pressure - detecting rubber pad 322 is electrically connected to the motor 211;

[0047] The self - ejecting and braking detection component 4 includes an ejecting drive component 41 and an ejecting detection component 42. The middle part of the support frame 1 is connected to an ejecting drive component 41. The upper end of the ejecting drive component 41 is connected to an ejecting detection component 42. The upper end of the ejecting detection component 42 is connected to the support frame 1;

[0048] The ejection driving assembly 41 includes a second threaded rod 411, a driving push block 412 and an ejection push block 413. A second threaded rod 411 is fixedly connected between two groups of first threaded rods 212. The second threaded rod 411 passes through the driving push block 412 and is threadedly connected to the driving push block 412. The first limit guiding rod 213 passes through the driving push block 412 and is slidably connected to the driving push block 412. Ejection push blocks 413 are fixedly connected to the front and rear sides of the upper end of the driving push block 412;

[0049] The ejection detection assembly 42 includes an installation groove 421, a detection roller 422, a T-shaped ejection block 423, a second limit guiding rod 424 and a spring 425. Installation grooves 421 are formed in the top plates of the support frames 1 above the ejection push blocks 413. Detection rollers 422 are rotatably connected to the left and right ends between the front and rear side walls of the installation groove 421. A group of T-shaped ejection blocks 423 are arranged between two groups of detection rollers 422 in the same installation groove 421. The lower end of the T-shaped ejection block 423 is slidably connected to the ejection push block 413. Second limit guiding rods 424 pass through the T-shaped ejection block 423 and are slidably connected to the T-shaped ejection block 423 at the front and rear ends of the horizontal plate of the T-shaped ejection block 423. The tops of the second limit guiding rods 424 are fixedly connected to the inner top of the support frame 1. Springs 425 are fixedly connected between the T-shaped ejection block 423 on the outer side of the second limit guiding rod 424 and the inner top of the support frame 1;

[0050] When it is necessary to detect a motor vehicle, the motor vehicle is transported to the right rotating support plate 221 through the support frame 1. At this time, the motor 211 is started, and the motor 211 drives the first threaded rod 212 to rotate. The first threaded rod 212 drives the two groups of adjusting push plates 214 to move towards each other. The adjusting push plate 214 pushes the rotating support plate 221 to rotate through the linkage push rod 223 and the hinge seat 222, so as to adjust the parking slope of the motor vehicle, realizing the detection of the motor vehicle parking at different slopes. When the rotating support plate 221 rotates, it drives the fixed gear 312 to rotate. The fixed gear 312 drives the bidirectional threaded rod 314 to rotate through the moving gear 313. The bidirectional threaded rod 314 simultaneously drives the two groups of support sliding columns 321 to slide towards each other, so that the support sliding columns 321 drive the pressure detection rubber pad 322 to move to the rear of the motor vehicle. Thus, when the rotating support plate 221 rotates to a higher slope, the motor vehicle begins to slide. When the motor vehicle slides to contact the pressure detection rubber pad 322, at this time, the pressure detection rubber pad 322 transmits a signal to the motor 211 to make the motor 211 stop operating. By the block of the pressure detection rubber pad 322, the sliding down of the motor vehicle is realized, and further, the collision of the motor vehicle tail when the motor vehicle slides down is avoided. And when the motor vehicle slides down and contacts the pressure detection rubber pad 322, the motor 211 stops operating at the same time, so that the maximum slope at which the motor vehicle can park can be obtained. When the uphill parking detection of the motor vehicle is completed, the rotating support plate 221 is lowered and the motor vehicle is transported to the middle position of the top plate of the support frame 1. At this time, the front wheels of the motor vehicle are placed between the two groups of detection rollers 422. At this time, the next motor vehicle to be detected is transported to the right rotating support plate 221. At this time, the motor 211 is started. While the motor 211 drives the rotating support plate 221 to rise, it drives the second threaded rod 411 to rotate. The second threaded rod 411 drives the driving push block 412 to move to the right. The driving push block 412 drives the ejecting push block 413 to move to the right. When the ejecting push block 413 moves to disengage from the T-shaped ejecting block 423, the T-shaped ejecting block 423 moves downward under the restoring force of the spring 425. At this time, the braking detection of the motor vehicle can be carried out. When the detection of the motor vehicle is completed, the motor 211 is started. The motor 211 drives the ejecting push block 413 to move to the left. The ejecting push block 413 drives the T-shaped ejecting block 423 to move upward. The T-shaped ejecting block 423 moves upward to contact the front wheels of the motor vehicle and pushes the motor vehicle upward to disengage from the detection rollers 422. At this time, the motor vehicle can be transported to the left rotating support plate 221 and the next group of motor vehicles can be parked on the detection rollers 422. At this time, the motor 211 is started. The motor 211 drives the left rotating support plate 221 to rotate. At this time, the downhill parking of the motor vehicle can be detected through the rotating support plate 221. When detecting the downhill parking of the motor vehicle, the left pressure detection rubber pad 322 moves to the front of the motor vehicle, so as to realize the detection of both the uphill and downhill of the motor vehicle.Moreover, due to the automatic blocking of the pressure detection rubber pad 322, there is no need to worry about the motor vehicle sliding and touching other motor vehicles, so that three motor vehicles can be detected at one time, ensuring the detection efficiency.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor vehicle safety detection device, including a support frame (1), characterized in that: The left and right ends of the support frame (1) are connected with a self-adjusting ramp parking detection component (2) for parking tests of motor vehicles with various slopes; Both the left and right ends of the self-adjusting ramp parking detection component (2) are connected with a self-yielding anti-slip component (3) for automatically adjusting the position to buffer and support the slipping motor vehicle; The middle part of the support frame (1) is connected with a self-ejecting braking detection component (4) that is linked with the self-adjusting ramp parking detection component (2) to detect the braking of the motor vehicle and automatically eject; The self-adjusting ramp parking detection component (2) includes an adjustment drive component (21) and a ramp support component (22). The middle parts of the left and right ends of the support frame (1) are connected with the adjustment drive component (21), the upper sides of the left and right ends of the support frame (1) are connected with the ramp support component (22), and the lower end of the ramp support component (22) is connected with the adjustment drive component (21).

2. The motor vehicle safety detection device according to claim 1, characterized in that The adjustment drive component (21) includes a motor (211), a first threaded rod (212), a first limit guide rod (213), and an adjustment push plate (214). The motor (211) is fixedly connected to the middle part of the right end of the support frame (1), the output end of the motor (211) is fixedly connected with the first threaded rod (212), the left end of the support frame (1) is rotatably connected with the first threaded rod (212), the front and rear ends of the support frame (1) are both fixedly connected with the first limit guide rod (213), and the mutually remote ends of the two groups of first threaded rods (212) both pass through a group of adjustment push plates (214) and are threadedly connected with the adjustment push plates (214). The front and rear ends of the adjustment push plate (214) are both passed through by a group of first limit guide rods (213) and are slidably connected with the first limit guide rods (213). A self-ejecting braking detection component (4) is connected between the two groups of first threaded rods (212).

3. The motor vehicle safety detection device according to claim 2, characterized in that, The ramp support component (22) includes a rotating support plate (221), a hinge seat (222), and a linkage push rod (223). There is a group of rotating support plates (221) on the upper sides of the left and right ends of the support frame (1). The mutually remote ends of the two groups of rotating support plates (221) are both rotatably connected to the support frame (1). The front and rear ends of the adjustment push plate (214) are both rotatably connected with the linkage push rod (223). The mutually close ends of the linkage push rods (223) on the two groups of adjustment push plates (214) are both rotatably connected with the hinge seat (222), and the top of the hinge seat (222) is fixedly connected to the rotating support plate (221).

4. The motor vehicle safety detection device according to claim 3, characterized in that, The self-yielding anti-slip component (3) includes a self-yielding drive component (31) and an anti-slip support component (32). The mutually remote ends of the rotating support plates (221) are both connected with the self-yielding drive component (31), and the upper ends of the self-yielding drive components (31) are both connected with the anti-slip support components (32).

5. The motor vehicle safety detection device according to claim 4, characterized in that The self-yielding drive assembly (31) includes an installation groove (311), a fixed gear (312), a moving gear (313), and a bidirectional threaded rod (314). Installation grooves (311) are formed on both the front and rear sides of the mutually remote ends of the motor (211). The bidirectional threaded rod (314) passes through the two groups of installation grooves (311) and is rotatably connected to the side walls of the installation grooves (311). Moving gears (313) are fixedly connected to both the front and rear ends of the bidirectional threaded rod (314). Fixed gears (312) are fixedly connected to both the front and rear ends of the rotating shaft of the rotating support plate (221). The fixed gears (312) are meshed with the moving gears (313).

6. The motor vehicle safety detection device according to claim 5, characterized in that, The anti-slip support assembly (32) includes support sliding columns (321) and pressure detection rubber pads (322). The lower end of each group of installation grooves (311) is slidably connected to the support sliding columns (321). A bidirectional threaded rod (314) passes through the support sliding columns (321) at the lower ends thereof and is threadedly connected to the support sliding columns (321). Pressure detection rubber pads (322) are fixedly connected to the ends of the support sliding columns (321) close to the rotating support plate (221).

7. The motor vehicle safety detection device according to claim 6, characterized in that, The pressure detection rubber pads (322) are electrically connected to the motor (211).

8. The motor vehicle safety detection device according to claim 7, characterized in that, The self-ejecting braking detection assembly (4) includes an ejecting drive assembly (41) and an ejecting detection assembly (42). The middle part of the support frame (1) is connected with the ejecting drive assembly (41). The upper end of the ejecting drive assembly (41) is connected with the ejecting detection assembly (42). The upper end of the ejecting detection assembly (42) is connected to the support frame (1).

9. The motor vehicle safety detection device according to claim 8, characterized in that The ejecting drive assembly (41) includes a second threaded rod (411), a driving push block (412), and an ejecting push block (413). A second threaded rod (411) is fixedly connected between the two groups of first threaded rods (212). The second threaded rod (411) passes through the driving push block (412) and is threadedly connected to the driving push block (412). The first limiting guide rod (213) passes through the driving push block (412) and is slidably connected to the driving push block (412). Ejecting push blocks (413) are fixedly connected to both the front and rear sides of the upper end of the driving push block (412).

10. The motor vehicle safety detection device according to claim 9, characterized in that, The ejection detection component (42) includes an installation groove (421), a detection roller (422), a T-shaped ejection block (423), a second limiting guide rod (424), and a spring (425). Installation grooves (421) are formed in the top plates of the support frames (1) above the ejection push blocks (413). The detection rollers (422) are rotatably connected to the left and right ends between the front and rear side walls of the installation groove (421). There is a set of T-shaped ejection blocks (423) between the two groups of detection rollers (422) in the same installation groove (421). The lower end of the T-shaped ejection block (423) is slidably connected to the ejection push block (413). A set of second limiting guide rods (424) passes through the T-shaped ejection block (423) and is slidably connected to the T-shaped ejection block (423) at the front and rear ends of the horizontal plate of the T-shaped ejection block (423). The tops of the second limiting guide rods (424) are fixedly connected to the inner top of the support frame (1). Springs (425) are fixedly connected between the T-shaped ejection blocks (423) on the outer sides of the second limiting guide rods (424) and the inner top of the support frame (1).

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