Motor vehicle emergency brake device

Abstract

The present invention relates to an emergency brake device for a motor vehicle, comprising a rotating shaft, a steel belt box, a steel belt, a steel plate box and an elastic steel plate; the rotating shaft is rotatably mounted on a vehicle chassis; the steel belt box is respectively fixed at both ends of the rotating shaft, the steel belt is in the steel belt box and is wound around the corresponding wheel during emergency braking to drive the rotating shaft to rotate as the wheel rolls; the steel plate box is fixed in the middle of the rotating shaft, the elastic steel plate is in the steel plate box and is continuously tightened as the rotating shaft rotates to form a braking elastic force that prevents the rotating shaft from continuing to rotate and gradually increases, and then the wheel is first decelerated and rolled forward for a distance by the braking elastic force, and then the rotating shaft is driven to rotate in the opposite direction to make the wheel roll backward to shorten the braking distance. The braking device greatly shortens the braking distance of the motor vehicle even when the motor vehicle is traveling at high speed, effectively ensuring the safety of people's lives and property.

Description

Technical Field

[0001] The invention relates to the field of safe driving, and in particular to an emergency brake device for a motor vehicle. Background Art

[0002] The motor vehicle itself is equipped with a brake system, which stops the motor vehicle through the friction between the brake pads and the wheel hub or disc. The above brake system can generally achieve braking within a short distance when the vehicle is traveling at a slow speed. However, when the vehicle is traveling at a high speed, such as on a highway, the motor vehicle has a large inertia due to its high speed. When emergency braking is required, it relies on its own brake system to brake through friction, and it takes a long braking distance to stop, which can easily cause traffic accidents and threaten people's lives and property safety. Summary of the invention

[0003] In summary, in order to overcome the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an emergency brake device for a motor vehicle.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a motor vehicle emergency brake device comprises a rotating shaft, a steel belt box, a steel belt, a steel plate box and an elastic steel plate; the rotating shaft is rotatably installed on the automobile chassis and corresponds to the position behind two similar wheels; the steel belt boxes are respectively fixed at both ends of the rotating shaft and correspond to the positions directly behind two similar wheels, the steel belt is in the steel belt box, and one end of the steel belt passes through the outside of the steel belt box to be wound around the corresponding wheel during emergency braking to drive the rotating shaft to rotate as the wheel rolls; the steel plate box is fixed in the middle of the rotating shaft, the elastic steel plate is in the steel plate box and is continuously tightened as the rotating shaft rotates to form a braking elastic force that prevents the rotating shaft from continuing to rotate and gradually increases, and then through the braking elastic force, the wheel is first decelerated and rolled forward for a distance and then the rotating shaft is driven to rotate in the opposite direction to make the wheel roll backward to shorten the braking distance.

[0005] The beneficial effect of the present invention is that even when the motor vehicle is traveling at high speed, the elastic steel plate of the braking device will form a continuously increasing elastic force when emergency braking is required, and the elastic force is used to prevent the motor vehicle from continuing to move forward, so that the driving speed of the motor vehicle can be reduced to a safe range in a relatively short time. Moreover, as the elastic force formed by the elastic steel plate continues to increase, when the elastic force is greater than the traction force of the motor vehicle moving forward, the motor vehicle moves backward, thereby greatly shortening the braking distance of the motor vehicle and effectively ensuring the safety of people's lives and property.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows:

[0007] Furthermore, it also includes a connecting rod; one end of the steel belt is fixedly connected to the steel belt reel which is in the steel belt box and fixedly mounted on the end of the rotating shaft, and the other end of the steel belt is wound around the outer circumference of the rotating shaft in the steel belt box for several turns and then passes through the steel belt box, and finally extends to the front side of the wheel along the outer circumference of the wheel along the baffle of the corresponding wheel; a barb is provided at the end of the steel belt away from the steel belt box, and the height of the barb is less than the thickness of the wheel tire; a guide plate is provided on the baffle corresponding to the position of the steel belt away from the end of the steel belt box, one end of the guide plate is hinged at the corresponding position of the baffle, and the other end of the guide plate extends upward to hide the end of the steel belt away from the steel belt box between the baffle and the guide plate; the connecting rod is installed in the car cab and drives the guide plate to rotate downward during emergency braking so that the end of the steel belt away from the steel belt box slides to the ground in front of the wheel, and then the wheel that continues to roll forward is pressed on the barb to wind the steel belt around the wheel.

[0008] The beneficial effect of adopting the above further solution is that during emergency braking, the wheel rolls forward and the steel belt drives the rotating shaft to rotate, thereby tightening the elastic steel plate to form a braking elastic force.

[0009] Furthermore, it also includes an elastic sealing plate; an opening for the steel belt to pass through is provided at the upper part of the side wall of the steel belt box; the lower end of the sealing plate is fixed at a position on the side wall of the steel belt box corresponding to the lower part of the opening. Its upper end extends upward in the direction of the opening, and the upper end of the sealing plate supports and presses the steel belt upward so that the steel belt sticks to the baffle and is smoothly wound around the corresponding wheel during emergency braking.

[0010] The beneficial effects of adopting the above further scheme are: the functions of the sealing plate are as follows: first, under the action of the elastic force of the sealing plate, the steel strip is pushed up and pressed against the inner side of the baffle, so that it is usually hidden on the baffle and does not contact the wheel; second, under the action of the elastic force of the sealing plate, the steel strip is pulled upward, thereby increasing the length of the steel strip extending out of the steel strip box, so that the steel strip can be wound around the wheel more accurately and quickly during emergency braking; third, during emergency braking, the sealing plate will be pressed down to enlarge the opening during the process of the steel strip being wound around the wheel, thereby avoiding jamming of the steel strip when it is pulled out of the steel strip box through the opening, and ensuring that the steel strip is smoothly pulled out of the steel strip box from the tangent direction of the reel that winds the steel strip around the steel strip in the steel strip box; fourth, the pulling direction of the steel strip is fixed to ensure that the direction of the steel strip does not deviate after it is pulled out of the steel strip box, so that it can be smoothly wound around the wheel.

[0011] Furthermore, the upper surface of the upper end of the sealing plate is provided with a guide groove for the steel belt to pass through, and the lower surface of the upper end is provided with flanges on both sides extending vertically downward and clamped on both sides of the wheel when the steel belt is wound around the wheel.

[0012] The beneficial effects of adopting the above further scheme are: the pulling-out direction of the steel belt is fixed by the guide groove to ensure that the direction of the steel belt does not deviate after it is pulled out; in case of emergency braking, the sealing plate will be pressed down during the process of the steel belt being wrapped around the wheel, so that the flanges are clamped on both sides of the wheel to ensure that the sealing plate does not deviate, thereby ensuring that the direction of the steel belt does not deviate after it is pulled out from the steel belt box, and then it can be smoothly wrapped around the wheel.

[0013] Furthermore, it also includes a latch and a pin pull rope; the latch is arranged perpendicular to the axial direction of the automobile chassis, and one end of the latch is slidably installed on one side of the bottom of the automobile chassis, and the other end of the latch passes through the baffle and then is inserted into the guide plate to limit the guide plate from rotating downward, thereby hiding the end of the steel belt away from the steel belt box between the baffle and the guide plate; one end of the pin pull rope is connected to the connecting rod, and the other end of the pin pull rope passes downward through the automobile chassis and extends backward along the axial direction of the automobile chassis for a distance, then changes direction and continues to extend in a direction perpendicular to the axial direction of the automobile chassis and decomposes into two branch belts, which are respectively connected to the ends of the two latches away from the guide plate.

[0014] The beneficial effect of adopting the above further solution is that the driver pulls the connecting rod to drive the guide plate to rotate downward so that the steel belt slides to the ground in front of the wheel, thereby achieving emergency braking.

[0015] Furthermore, a fixed pulley is provided on the automobile chassis at a position corresponding to the position where the detent rope changes direction, and after the detent rope is wound around the fixed pulley, the direction changes from along the axial direction of the automobile chassis to along a direction perpendicular to the axial direction of the automobile chassis.

[0016] Furthermore, one end of the elastic steel plate is fixedly connected to the steel plate reel which is located in the steel plate box and fixedly mounted on the middle part of the rotating shaft, and the other end is wrapped around the outer circumference of the rotating shaft for several circles in the steel plate box and then passes through the steel plate box, and finally is fixed to the corresponding position of the automobile chassis so as to be continuously tightened and wrapped around the rotating shaft as the rotating shaft rotates.

[0017] Furthermore, it also includes a thick steel plate with an arc structure; one end of the thick steel plate is fixed on the steel plate reel, and the other end is fixedly connected to one end of the elastic steel plate after being bent and extended for a distance on the outer circumference of the steel plate reel, and a gap is left between the thick steel plate and the steel plate reel to prevent the elastic steel plate from being tightly attached to the steel plate reel and causing breakage when tightened.

[0018] The beneficial effect of adopting the above further solution is that the thick steel plate ensures that the elastic steel plate will not be wrapped around the steel plate reel when tightened, thereby avoiding the elastic steel plate from being closely attached to the steel plate reel when tightened and causing breakage.

[0019] Furthermore, the steel plate box is provided with one or a plurality of steel plate boxes are evenly provided on the rotating shaft.

[0020] The beneficial effect of adopting the above further solution is: the number of steel plate boxes installed is based on the actual situation of the motor vehicle, and the more steel plate boxes there are, the greater the brake elastic force generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 for Figure 1 A magnified view of;

[0023] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0024] Figure 4 It is a bottom view structural schematic diagram of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the steel belt box;

[0026] Figure 6 It is a schematic diagram of the internal structure of the steel plate box;

[0027] Figure 7 It is a schematic diagram of the main structure of the sealing plate;

[0028] Figure 8 for Figure 7 Schematic diagram of the BB cross-sectional structure.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Rotating shaft, 2. Steel belt box, 3. Steel belt, 4. Steel plate box, 5. Elastic steel plate, 6. Automobile chassis, 7. Wheel, 8. Connecting rod, 9. Baffle, 10. Barb, 11. Guide plate, 12. Sealing plate, 13. Opening, 14. Latch, 15. Pin rope, 16. Fixed pulley, 17. Thick steel plate, 18. Guide groove, 19. Flange, 20. Steel belt reel, 21. Steel plate reel. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1-4As shown, a motor vehicle emergency brake device includes a rotating shaft 1, a steel belt box 2, a steel belt 3, a steel plate box 4, an elastic steel plate 5, a connecting rod 8, a sealing plate 12, a latch 14, a pin rope 15, and a thick steel plate 17. The rotating shaft 1 is rotatably mounted on the automobile chassis 6 and corresponds to the position behind two similar wheels 7. The two similar wheels 7 refer to the two front wheels or rear wheels of the same motor vehicle. The steel belt box 2 is respectively fixed at both ends of the rotating shaft 1 and corresponds to the position directly behind the two similar wheels 7. The steel belt 3 is in the steel belt box 2, and one end of the steel belt 3 passes through the outside of the steel belt box 2 to be wound around the corresponding wheel 7 during emergency braking so as to drive the rotating shaft 1 to rotate as the wheel 7 rolls. The steel plate box 4 is fixed at the middle part of the rotating shaft 1, and the elastic steel plate 5 is in the steel plate box 4 and is continuously tightened as the rotating shaft 1 rotates to form a braking elastic force that prevents the rotating shaft 1 from continuing to rotate and gradually increases. Then, through the braking elastic force, the wheel 7 is first decelerated and rolls forward for a distance, and then the rotating shaft 1 is driven to rotate in the opposite direction to make the wheel 7 roll backward to shorten the braking distance.

[0033] like Figure 5 As shown, one end of the steel belt 3 is fixedly connected to the steel belt reel 20 which is located in the steel belt box 2 and fixedly mounted on the end of the rotating shaft 1, and the other end is wound around the outer circumference of the rotating shaft 1 for several turns in the steel belt box 2 and then passes through the steel belt box 2, and finally extends to the front side of the wheel 7 along the outer circumference of the wheel 7 along the baffle 9 of the corresponding wheel 7. A barb 10 is provided at the end of the steel belt 3 away from the steel belt box 2, and the height of the barb 10 is less than the thickness of the outer tire of the wheel 7. A guide plate 11 is provided on the baffle 9 corresponding to the position of the steel belt 3 away from the steel belt box 2, and one end of the guide plate 11 is hinged at the corresponding position of the baffle 9, and the other end of the guide plate 11 is extended upward to hide the end of the steel belt 3 away from the steel belt box 2 between the baffle 9 and the guide plate 11.

[0034] The connecting rod 8 is installed in the car cab and drives the guide plate 11 to rotate downward during emergency braking so that the end of the steel belt 3 away from the steel belt box 2 slides to the ground in front of the wheel 7, and then the wheel 7 that continues to roll forward presses on the barb 10 to wrap the steel belt 3 around the wheel 7, specifically as follows: the latch 14 is arranged perpendicular to the axial direction of the car chassis 6, and one end of the latch 14 is slidably installed on one side of the bottom of the car chassis 6, and the other end thereof passes through the baffle 9 and then is inserted into the guide plate 11 to limit the guide plate 11 from rotating downward, thereby hiding the end of the steel belt 3 away from the steel belt box 2 between the baffle 9 and the guide plate 11. One end of the detent rope 15 is connected to the connecting rod 8, and the other end thereof passes through the car chassis 6 downward and extends backward along the axial direction of the car chassis 6 for a distance, then changes direction and continues to extend in a direction perpendicular to the axial direction of the car chassis 6 and decomposes into two branch belts, which are respectively connected to the ends of the two latches 14 away from the guide plate 11. A fixed pulley 16 is provided on the automobile chassis 6 at a position corresponding to the position where the detent rope 15 changes direction. After the detent rope 15 is wound around the fixed pulley 16 , the direction changes from along the axial direction of the automobile chassis 6 to along a direction perpendicular to the axial direction of the automobile chassis 6 .

[0035] An opening 13 is provided at the upper portion of the side wall of the steel belt box 2 for the steel belt 3 to pass through. The lower end of the sealing plate 12 is fixed on the side wall of the steel belt box 2 at a position corresponding to the lower portion of the opening 13, and the upper end thereof extends upward toward the opening 13. The upper end of the sealing plate 12 supports and pushes upward against the steel belt 3 so that the steel belt 3 sticks to the baffle 9 and is smoothly wound around the corresponding wheel 7 during emergency braking. Figure 7 and 8 As shown, the upper surface of the upper end of the sealing plate 12 is provided with a guide groove 18 for the steel belt 3 to pass through, and the lower surface of the upper end is provided with flanges 19 on both sides thereof extending vertically downward and clamped downwardly on both sides of the wheel 7 when the steel belt 3 is wound around the wheel 7.

[0036] like Figure 6 As shown, one end of the elastic steel plate 5 is fixedly connected to the steel plate reel 21 which is in the steel plate box 3 and fixedly mounted on the middle part of the rotating shaft 1, and the other end is wound around the outer circumference of the rotating shaft 1 for several turns in the steel plate box 3 and then passes out of the steel plate box 3, and finally fixed to the corresponding position of the automobile chassis 6 so as to be continuously tightened and wound around the rotating shaft 1 as the rotating shaft 1 rotates. The thick steel plate 17 is an arc structure, one end of which is fixed to the steel plate reel 21, and the other end is bent and extended for a distance around the outer circumference of the steel plate reel 21 and then fixedly connected to one end of the elastic steel plate 5, and a gap is left between the thick steel plate 17 and the steel plate reel 21 to prevent the elastic steel plate 5 from being tightly attached to the steel plate reel 21 and causing breakage when tightened.

[0037] The following describes a complete working process of the brake device:

[0038] When the motor vehicle needs emergency brake during driving, the driver immediately pulls the connecting rod 8, and the connecting rod 8 is pulled and then driven by the pull-out rope 15 to slide the latch 14 to pull the latch 14 out of the guide plate 11. After the latch 14 pulls out the guide plate 11, the guide plate 11 rotates downward under the action of its own gravity, so that the steel belt 3 slides away from the end of the steel belt box 2 that is provided with the barb 10 to the ground on the front side of the wheel 7, and the wheel 7 continues to roll forward and is pressed on the barb 10, and the barb 10 can pierce the outer tire of the wheel 7. Because the height of the barb 10 is less than the thickness of the outer tire of the wheel 7, even if the wheel 7 is pressed on the barb 10, the wheel 7 will not have a tire blowout. After the barb 10 pierces the outer tire of the wheel 7, as the wheel 7 continues to roll forward, the steel belt 3 can be continuously pulled out from the steel belt box 2 and wound around the wheel 7. When the steel belt 3 is pulled out from the steel belt box 2, it will pull the steel belt reel 20 to rotate, and the reel 20 will drive the rotating shaft 1 to rotate synchronously. When the rotating shaft 1 rotates, it will drive the steel plate reel 21 to rotate synchronously. After the steel plate reel 21 rotates, it will continuously tighten the elastic steel plate 12 wound thereon. After the elastic steel plate 12 is continuously tightened, a gradually increasing braking elastic force is formed, which is converted into a pulling force to pull the wheel 7 backward through the steel belt 3, so that the wheel 7 stops rolling, that is, brakes. At the beginning, the brake elastic force is smaller than the traction force of the motor vehicle, which forms a resistance to the forward movement of the motor vehicle. As the brake elastic force continues to increase, the driving speed of the motor vehicle continues to decrease, thereby reducing the driving speed of the motor vehicle to a safe range in a relatively short time; as the elastic steel plate 12 tightens, when the brake elastic force formed by it is greater than the traction force of the car, the wheel 7 will roll backward under the action of the backward pulling force of the steel belt 3, that is, the brake elastic force, and the motor vehicle will travel backward for a distance and then stop to complete the braking, thereby greatly shortening the braking distance of the motor vehicle, preventing the motor vehicle from hitting obstacles, and ensuring the safety of people's lives and property. After the motor vehicle stops and the safety hazard is eliminated, the motor vehicle is controlled to travel backward for a certain distance to make the steel belt 3 detach from the wheel 7. At the same time, the elastic steel plate 5 stretches and restores its original state to drive the rotating shaft 1 to rotate and put the steel belt 3 into the steel belt box 2. Finally, the guide plate 11 is rotated upward and the latch 14 is inserted for positioning, and the end of the steel belt 3 provided with the barb 10 is hidden between the guide plate 11 and the baffle 9.

[0039] After the steel belt 3 is wound around the wheel 7, the wheel 7 will first roll and then slide. When the wheel 7 slides, i.e. does not rotate, the portion of the steel belt 3 that contacts the ground can be equipped with a wear-resistant belt or an ultra-high molecular weight polyethylene fiber belt (which is more wear-resistant, stronger, lighter, and more expensive than a general wear-resistant belt). In this way, the wear-resistant belt or the ultra-high molecular weight polyethylene fiber belt installed on the steel belt 3 is rubbed against the ground, thereby increasing the friction force, thereby further braking the vehicle in a short time and a short distance.

[0040] According to the type of motor vehicle, a steel plate box 4 can be provided on the rotating shaft 1 or multiple steel plate boxes 4 can be evenly provided. The more steel plate boxes 4 there are, the greater the brake elastic force formed. For example, for some large-sized heavy-duty trucks, due to their heavy weight, the inertia generated when driving at high speed is also large. A certain number of steel plate boxes 4 can be installed on the rotating shaft 1 to increase the brake elastic force to ensure the emergency braking of the large-sized heavy-duty trucks. In addition, the brake device is mainly used to brake the rear wheels of the motor vehicle. According to actual needs, the rear wheels can be braked / the front wheels can be braked / the rear wheels and the front wheels can be braked at the same time.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor vehicle emergency brake device, characterized in that: The invention comprises a rotating shaft (1), a steel belt box (2), a steel belt (3), a steel plate box (4) and an elastic steel plate (5); the rotating shaft (1) is rotatably mounted on a vehicle chassis (6) and is located at a position corresponding to the rear of two similar wheels (7); the steel belt box (2) is respectively fixed at two ends of the rotating shaft (1) and is located at a position corresponding to the rear of two similar wheels (7); the steel belt (3) is located in the steel belt box (2), and one end of the steel belt (3) passes through the outside of the steel belt box (2) so as to be wound around the corresponding wheel in case of emergency braking. (7) drives the rotating shaft (1) to rotate as the wheel (7) rolls; the steel plate box (4) is fixed at the middle of the rotating shaft (1), the elastic steel plate (5) is in the steel plate box (4) and is continuously tightened as the rotating shaft (1) rotates to form a braking elastic force that prevents the rotating shaft (1) from continuing to rotate and gradually increases, and then the wheel (7) is decelerated and rolled forward for a certain distance by the braking elastic force, and then the rotating shaft (1) is driven to rotate in the opposite direction to make the wheel (7) roll backward to shorten the braking distance; It also includes a connecting rod (8); one end of the steel belt (3) is fixedly connected to a steel belt reel (20) located in the steel belt box (2) and fixedly mounted on the end of the rotating shaft (1); the other end of the steel belt (3) is wound around the outer circumference of the rotating shaft (1) for several turns in the steel belt box (2) and then passes through the steel belt box (2), and finally extends to the front side of the wheel (7) along the outer circumference of the wheel (7) along the baffle (9) of the corresponding wheel (7); a barb (10) is provided at one end of the steel belt (3) away from the steel belt box (2), and the height of the barb (10) is less than the thickness of the outer tire of the wheel (7); the baffle (9) corresponds to the steel belt (3) away from the steel belt box (2) a guide plate (11) is provided at one end thereof, one end of the guide plate (11) is hinged at a corresponding position of the baffle plate (9), and the other end thereof extends upwardly to hide the end of the steel belt (3) away from the steel belt box (2) between the baffle plate (9) and the guide plate (11); the connecting rod (8) is installed in the vehicle cab and drives the guide plate (11) to rotate downward during emergency braking so that the end of the steel belt (3) away from the steel belt box (2) slides onto the ground in front of the wheel (7), thereby causing the wheel (7) that continues to roll forward to press on the barb (10) so that the steel belt (3) is wound around the wheel (7); One end of the elastic steel plate (5) is fixedly connected to a steel plate reel (21) which is located in the steel plate box (4) and fixedly mounted on the middle part of the rotating shaft (1); the other end of the elastic steel plate (5) is wound around the outer circumference of the rotating shaft (1) for several turns in the steel plate box (3) and then passes out of the steel plate box (3), and is finally fixed to a corresponding position of the automobile chassis (6) so as to be continuously tightened and wound around the rotating shaft (1) as the rotating shaft (1) rotates.

2. The motor vehicle emergency brake device according to claim 1, characterized in that: It also includes an elastic sealing plate (12); an opening (13) for the steel belt (3) to pass through is provided at the upper position of the side wall of the steel belt box (2); the lower end of the sealing plate (12) is fixed on the side wall of the steel belt box (2) at a position corresponding to the lower part of the opening (13), and its upper end extends upward in the direction of the opening (13); and the upper end of the sealing plate (12) supports and presses upward against the steel belt (3) so that the steel belt (3) sticks to the baffle (9) and can be smoothly wound around the corresponding wheel (7) during emergency braking.

3. The motor vehicle emergency brake device according to claim 2, characterized in that: The upper surface of the upper end of the sealing plate (12) is provided with a guide groove (18) for the steel belt (3) to pass through, and flanges (19) are provided on both sides of the lower surface of the upper end thereof, which extend vertically downward and are clamped on both sides of the wheel (7) when the steel belt (3) is wound onto the wheel (7).

4. The motor vehicle emergency brake device according to claim 1, characterized in that: It also includes a latch (14) and a pin pull rope (15); the latch (14) is arranged perpendicular to the axial direction of the automobile chassis (6), and one end of the latch (14) is slidably installed on one side of the bottom of the automobile chassis (6), and the other end thereof passes through the baffle (9) and then is inserted into the guide plate (11) to limit the downward rotation of the guide plate (11), thereby hiding the end of the steel belt (3) away from the steel belt box (2) between the baffle (9) and the guide plate (11); one end of the pin pull rope (15) is connected to the connecting rod (8), and the other end thereof passes downward through the automobile chassis (6) and extends backward along the axial direction of the automobile chassis (6) for a distance, then changes direction and continues to extend in a direction perpendicular to the axial direction of the automobile chassis (6) and decomposes into two branch belts, which are respectively connected to the ends of the two latches (14) away from the guide plate (11).

5. The motor vehicle emergency brake device according to claim 4, characterized in that: A fixed pulley (16) is provided on the automobile chassis (6) at a position corresponding to the position where the detent rope (15) changes direction. After the detent rope (15) is wound around the fixed pulley (16), the direction changes from along the axial direction of the automobile chassis (6) to along the direction perpendicular to the axial direction of the automobile chassis (6).

6. The motor vehicle emergency brake device according to claim 1, characterized in that: It also includes a thick steel plate (17) with an arc structure; one end of the thick steel plate (17) is fixed on the steel plate reel (21), and the other end is bent and extended for a certain distance on the outer circumference of the steel plate reel (21) and then fixedly connected to one end of the elastic steel plate (5); and a gap is left between the thick steel plate (17) and the steel plate reel (21) to prevent the elastic steel plate (5) from being tightly attached to the steel plate reel (21) and causing breakage when being tightened.

7. The motor vehicle emergency brake device according to any one of claims 1 to 6, characterized in that: The steel plate box (4) is provided with one or a plurality of steel plate boxes (4) are evenly provided on the rotating shaft (1).

Images