Tail safety device

Abstract

The utility model discloses a tail safety device, which relates to the technical field of special vehicles and comprises a frame, a tank body is arranged on the outer surface of the upper end of the frame, a control device and a tail safety device are arranged on the outer surface of the lower end of the frame, and the control device is positioned on one side of the tail safety device. According to the tail safety device, when the trolley rapidly collides with the protection cross beam, the speed sensor A detects the speed of the trolley, the speed sensor B detects the speed of the special vehicle, the speed difference is obtained, the control system controls the damper control switch according to the speed difference value, the damping of the hydraulic damper is adjusted, and the safety of the tail is achieved. The larger the speed difference value is, the larger the damping value is, and the smaller the speed difference value is, the smaller the damping value is, so that certain buffering is achieved when the trolley collides with the protective cross beam, the collision force is reduced, and the life safety of trolley personnel and the safety of the trolley are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of special vehicles, in particular to a tail safety device. Background Art

[0002] In order to protect themselves and avoid the harm caused by rear-end collisions, the existing special-purpose vehicles have high strength and rigidity in the rear bumpers, which fully play a protective role. However, with the increasing number of small cars, rear-end collisions are also on the rise. When a small car rear-ends a special-purpose vehicle, it often hits the bumper of the special-purpose vehicle. Since the impact is a steel-to-steel collision without buffering, it often leads to serious casualties and vehicle damage. In addition, rear-end collisions are the most common phenomenon in vehicle accidents. For this reason, we propose a rear safety device. Utility Model Content

[0003] The main purpose of the present invention is to provide a tail safety device that can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a tail safety device, including a frame, a tank body is provided on the outer surface of the upper end of the frame, and a control device and a tail safety device are provided on the outer surface of the lower end of the frame, the control device is located on one side of the tail safety device, and the tail safety device includes a protective crossbeam, a connecting vertical beam, a bushing, a guide shaft, a limiting ring, a hydraulic damper, a fixing pin, a fixing ear and a crash-resistant rubber pad, the connecting vertical beam is located behind the protective crossbeam, the bushing is located in the middle of the connecting vertical beam, the guide shaft is located on the rear end outer surface of the protective crossbeam, the limiting ring is located at the rear end of the guide shaft, the hydraulic damper is located on one side of the connecting vertical beam, the fixing pin is located at the front end of the hydraulic damper, the fixing ear is located at the rear end of the hydraulic damper, and the crash-resistant rubber pad is located on the outer wall of the guide shaft.

[0005] Preferably, the control device includes a control system, a power supply, a damper control switch, a speed sensor A and a speed sensor B.

[0006] Preferably, the bushing is connected to the connecting vertical beam by welding, the guide shaft is connected to the protective cross beam by welding, and the guide shaft passes through the bushing.

[0007] Preferably, the outer surface of the rear end of the guide shaft is provided with an external thread, the inner wall of the limiting ring is provided with an internal thread, and the guide shaft is threadedly connected to the limiting ring.

[0008] Preferably, the hydraulic damper is welded to the connecting vertical beam via a fixing pin, and the hydraulic damper is welded to the protective cross beam via a fixing ear.

[0009] Preferably, a power line is connected between the control system and the power supply, and the damper control switch, speed sensor A and speed sensor B are all electrically connected to the control system.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] When the car collides with the protective beam at a high speed, speed sensor A detects the speed of the car, and speed sensor B detects the speed of the special vehicle itself, and the speed difference is obtained. According to the size of the speed difference, the control system controls the damper control switch and adjusts the damping size of the hydraulic damper. The greater the speed difference, the greater the damping, and the smaller the speed difference, the smaller the damping, so that there is a certain buffer when the car hits the protective beam, reducing the impact force, and protecting the lives of the car occupants and the safety of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is the initial state structure diagram of the hydraulic damper of the utility model;

[0014] Figure 3 This is a structural diagram of the hydraulic damper in a compressed state according to the utility model;

[0015] Figure 4 It is a structural diagram of the control device of the present utility model.

[0016] In the figure: 1. Frame; 2. Tank; 3. Control device; 4. Tail safety device; 5. Protective crossbeam; 6. Connecting vertical beam; 7. Bushing; 8. Guide shaft; 9. Limiting ring; 10. Hydraulic damper; 11. Fixing pin; 12. Fixing ear; 13. Anti-collision rubber pad; 14. Control system; 15. Power supply; 16. Damper control switch; 17. Speed sensor A; 18. Speed sensor B. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1-4As shown, a tail safety device provided by an embodiment of the present invention includes a frame 1, a tank body 2 is provided on the outer surface of the upper end of the frame 1, a control device 3 and a tail safety device 4 are provided on the outer surface of the lower end of the frame 1, the control device 3 is located on one side of the tail safety device 4, and the tail safety device 4 includes a protective crossbeam 5, a connecting vertical beam 6, a shaft sleeve 7, a guide shaft 8, a limiting ring 9, a hydraulic damper 10, a fixing pin 11, a fixing ear 12 and a crash-resistant rubber pad 13, the connecting vertical beam 6 is located behind the protective crossbeam 5, the shaft sleeve 7 is located in the middle of the connecting vertical beam 6, the guide shaft 8 is located on the outer surface of the rear end of the protective crossbeam 5, the limiting ring 9 is located at the rear end of the guide shaft 8, the hydraulic damper 10 is located on one side of the connecting vertical beam 6, the fixing pin 11 is located at the front end of the hydraulic damper 10, the fixing ear 12 is located at the rear end of the hydraulic damper 10, and the crash-resistant rubber pad 13 is located on the outer wall of the guide shaft 8.

[0019] Specifically, in this embodiment, it includes a frame 1, a tank body 2 is provided on the outer surface of the upper end of the frame 1, a control device 3 and a tail safety device 4 are provided on the outer surface of the lower end of the frame 1, the control device 3 is located on one side of the tail safety device 4, and the tail safety device 4 includes a protective crossbeam 5, a connecting vertical beam 6, a shaft sleeve 7, a guide shaft 8, a limit ring 9, a hydraulic damper 10, a fixing pin 11, a fixing ear 12 and an anti-collision rubber pad 13, the connecting vertical beam 6 is located behind the protective crossbeam 5, and the shaft sleeve 7 is located at the connecting vertical beam. 6, the guide shaft 8 is located on the outer surface of the rear end of the protective beam 5, the limit ring 9 is located at the rear end of the guide shaft 8, the hydraulic damper 10 is located on one side of the connecting vertical beam 6, the fixing pin 11 is located at the front end of the hydraulic damper 10, the fixing ear 12 is located at the rear end of the hydraulic damper 10, the anti-collision rubber pad 13 is located on the outer wall of the guide shaft 8, and the top of the connecting vertical beam 6 is welded to the bottom of the frame 1 when in use. The anti-collision rubber pad 13 is fixed to the outer wall of the guide shaft 8 and is located between the protective beam 5 and the connecting vertical beam 6.

[0020] The utility model provides a rear safety device. When a trolley collides with a protective crossbeam 5 at high speed, a speed sensor A17 detects the speed of the trolley, and a speed sensor B18 detects the speed of the special vehicle itself, and a speed difference is obtained. According to the size of the speed difference, a control system 14 controls a damper control switch 16 to adjust the damping size of a hydraulic damper 10. The larger the speed difference, the greater the damping, and the smaller the speed difference, the smaller the damping. This ensures that there is a certain amount of cushioning when the trolley collides with the protective crossbeam 5, reduces the force of the impact, and protects the life safety of the occupants of the trolley and the safety of the trolley.

[0021] In one embodiment provided by the present invention, the control device 3 includes a control system 14, a power supply 15, a damper control switch 16, a speed sensor A17 and a speed sensor B18. The damper control switch 16 can control and adjust the damping size of the hydraulic damper 10 when in use, and the hydraulic damper 10 can be automatically reset.

[0022] In another embodiment provided by the present invention, the shaft sleeve 7 is welded to the connecting vertical beam 6 , the guide shaft 8 is welded to the protective cross beam 5 , and the guide shaft 8 passes through the shaft sleeve 7 , and the guide shaft 8 can slide in the shaft sleeve 7 .

[0023] In another embodiment provided by the present invention, the outer surface of the rear end of the guide shaft 8 is provided with an external thread, and the inner wall of the limiting ring 9 is provided with an internal thread. The guide shaft 8 is threadedly connected to the limiting ring 9. The limiting ring 9 is installed on the guide shaft 8 through threads when in use, which can limit the guide shaft 8 and prevent it from falling off. The limiting ring 9 can be conveniently disassembled and assembled through the threaded connection.

[0024] In one embodiment provided by the present invention, the hydraulic damper 10 is welded to the connecting vertical beam 6 through a fixing pin 11, and the hydraulic damper 10 is welded to the protective beam 5 through a fixing ear 12. The fixing pin 11 at the front end of the hydraulic damper 10 is welded to the side of the connecting vertical beam 6, and the fixing ear 12 at the rear end of the hydraulic damper 10 is welded to the rear end of the protective beam 5.

[0025] In another embodiment provided by the present invention, a power cord is connected between the control system 14 and the power supply 15, and the damper control switch 16, the speed sensor A17 and the speed sensor B18 are all electrically connected to the control system 14. The speed sensor A17 is mainly used to detect the speed of the rear impact vehicle, and the speed sensor B18 is mainly used to detect the speed of the special vehicle itself.

[0026] It should be noted that the present invention is a rear safety device. When the car collides with the protective beam 5 at a high speed, the speed sensor A17 detects the speed of the car, and the speed sensor B18 detects the speed of the special vehicle itself, and the speed difference is obtained. According to the size of the speed difference, the control system 14 controls the damper control switch 16 to adjust the damping size of the hydraulic damper 10. The larger the speed difference, the greater the damping, and the smaller the speed difference, the smaller the damping. This ensures that there is a certain buffer when the car collides with the protective beam 5, reduces the force of the impact, and protects the life safety of the car occupants and the safety of the car. When the hydraulic damper 10 is compressed, the protective beam 5 slides in the shaft sleeve 7 through the guide shaft 8 until it stops after colliding with the anti-collision rubber pad 13, which is more practical.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear safety device, comprising a vehicle frame (1), characterized in that: The upper outer surface of the frame (1) is provided with a tank body (2), the lower outer surface of the frame (1) is provided with a control device (3) and a tail safety device (4), the control device (3) is located on one side of the tail safety device (4), the tail safety device (4) comprises a protective crossbeam (5), a connecting vertical beam (6), a shaft sleeve (7), a guide shaft (8), a limiting ring (9), a hydraulic damper (10), a fixing pin (11), a fixing ear (12) and a crash-resistant rubber pad (13), the connecting vertical beam (6 ) is located at the rear of the protective crossbeam (5), the bushing (7) is located in the middle of the connecting vertical beam (6), the guide shaft (8) is located on the outer surface of the rear end of the protective crossbeam (5), the limiting ring (9) is located at the rear end of the guide shaft (8), the hydraulic damper (10) is located on one side of the connecting vertical beam (6), the fixing pin (11) is located at the front end of the hydraulic damper (10), the fixing ear (12) is located at the rear end of the hydraulic damper (10), and the anti-collision rubber pad (13) is located on the outer wall of the guide shaft (8).

2. A rear safety device according to claim 1, characterized in that: The control device (3) includes a control system (14), a power supply (15), a damper control switch (16), a speed sensor A (17) and a speed sensor B (18).

3. The rear safety device according to claim 1, characterized in that: The shaft sleeve (7) is welded to the connecting vertical beam (6), the guide shaft (8) is welded to the protective cross beam (5), and the guide shaft (8) passes through the shaft sleeve (7).

4. The rear safety device according to claim 1, characterized in that: The rear end outer surface of the guide shaft (8) is provided with an external thread, the inner wall of the limiting ring (9) is provided with an internal thread, and the guide shaft (8) and the limiting ring (9) are threadedly connected.

5. The rear safety device according to claim 1, characterized in that: The hydraulic damper (10) is welded to the connecting vertical beam (6) via a fixing pin (11), and the hydraulic damper (10) is welded to the protective cross beam (5) via a fixing ear (12).

6. The rear safety device according to claim 2, characterized in that: A power line is connected between the control system (14) and the power source (15), and the damper control switch (16), the speed sensor A (17) and the speed sensor B (18) are all electrically connected to the control system (14).

Images