A rear buffer device for a rear-end collision prevention semi-trailer

Abstract

The utility model discloses a kind of rear buffer devices of anti-collision semitrailer, belong to buffer device field, including first buffer plate, the side fixed connection of first buffer plate has first fixed shaft, the surface movable connection of first fixed shaft has first connecting plate;First connecting plate and second connecting plate are set, and then when impact force hits protective block, first connecting plate rotates around first fixed shaft, second connecting plate rotates around second fixed shaft, connecting shaft moves transversely with the change of connecting plate angle, longitudinal impact force is converted into rotation, and then the direct impact force borne by buffer plate can be reduced, and then the reliability and safety of device are improved, first sliding block and second sliding block are set, and then when impact force promotes buffer plate to be close, first sliding block and second sliding block slide reversely along pad sliding groove, avoid local component damage caused by impact force concentration, and then the practicability of device is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of buffer devices, specifically relating to a rear buffer device for preventing rear-end collisions on a semi-trailer. Background Technology

[0002] In the field of highway freight, semi-trailers are high-risk vehicles in rear-end collisions due to their long body length, large blind spot at the rear, and long braking response time. According to data from the Ministry of Transport, semi-trailers account for more than 45% of rear-end collisions involving freight vehicles each year. Moreover, because semi-trailers lack effective cushioning protection at the rear, accidents are often accompanied by severe vehicle deformation, cargo damage, and even personal injury.

[0003] When a rear-end collision occurs, the existing buffer device directly applies the impact force to the baffle, and the baffle directly bears the entire impact force. If the impact force is large, the baffle is prone to bending, breaking, or even deformation along with the rear frame of the semi-trailer, thereby reducing the safety of the device. Utility Model Content

[0004] The purpose of this utility model is to provide a rear-end buffer device for anti-rear-end collision semi-trailers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rear-end buffer device for a semi-trailer to prevent rear-end collisions, comprising a first buffer plate, a first fixed shaft fixedly connected to one side of the first buffer plate, a first connecting plate movably connected to the surface of the first fixed shaft, a connecting shaft movably connected to the end of the first connecting plate away from the first fixed shaft, a second connecting plate movably connected to the surface of the connecting shaft, a second fixed shaft movably connected to the end of the second connecting plate away from the connecting shaft, and a second buffer plate fixedly connected to one side of the second fixed shaft.

[0006] In a preferred embodiment, a pad is fixedly connected to one side of both the first buffer plate and the second buffer plate. A groove is provided on one side of the pad, and a first sliding block is slidably connected in the groove. A first limiting shaft is fixedly connected to one side of the first sliding block, and a limiting plate is movably connected to the surface of the first limiting shaft. A second limiting shaft is movably connected to the end of the limiting plate away from the first limiting shaft, and a second sliding block is fixedly connected to one side of the second limiting shaft.

[0007] In a preferred embodiment, a first telescopic block is fixedly connected to the side of the second buffer plate near the first buffer plate, and a second telescopic block is sleeved on one end of the first telescopic block. A first connecting plate and a second connecting plate are fixedly connected to one side of the first telescopic block and the second telescopic block, respectively. A first telescopic rod is fixedly connected to the side of the first connecting plate near the second connecting plate, and a second telescopic rod is sleeved on one end of the first telescopic rod.

[0008] In a preferred embodiment, the second telescopic block is fixedly connected to the first buffer plate.

[0009] In a preferred embodiment, a first protective plate is fixedly connected to the side of the first buffer plate away from the second buffer plate, and a second protective plate is fixedly connected to the side of the second buffer plate away from the first buffer plate.

[0010] In a preferred embodiment, a buffer protection block is fixedly connected to the side of the first protective plate away from the first buffer plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This rear-end buffer device for anti-rear-end collision semi-trailers uses a first connecting plate and a second connecting plate. When an impact force hits the protective block, the first connecting plate rotates around a first fixed axis and the second connecting plate rotates around a second fixed axis. The connecting axis moves laterally as the angle of the connecting plates changes, converting the longitudinal impact force into rotation. This reduces the direct impact force borne by the buffer plate, thereby improving the reliability and safety of the device.

[0013] This rear-end buffer device for anti-rear-end collision semi-trailers uses a first sliding block and a second sliding block. When the impact force pushes the buffer plate close, the first sliding block and the second sliding block slide in opposite directions along the pad groove, and the limiting plate rotates around the limiting axis. Through lateral displacement, part of the impact force is dispersed to both sides of the device, avoiding the impact force concentration that could cause damage to local components. At the same time, it reduces the transmission of impact force to the vehicle body, thereby improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall planar structure of this utility model;

[0016] Figure 3 This is a schematic diagram of one side of the overall structure of this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B;

[0019] Figure 6 This utility model Figure 3 Enlarged structural diagram at point C.

[0020] In the diagram: 1. First buffer plate; 101. First fixed shaft; 102. First connecting plate; 103. Connecting shaft; 104. Second connecting plate; 105. Second fixed shaft; 106. Second buffer plate; 2. Pad block; 201. First sliding block; 202. First limiting shaft; 203. Limiting plate; 204. Second limiting shaft; 205. Second sliding block; 3. First telescopic block; 301. Second telescopic block; 302. First connecting plate; 303. Second connecting plate; 304. First telescopic rod; 305. Second telescopic rod; 4. First protective plate; 401. Second protective plate; 5. Buffer protective block. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-6 This utility model provides a rear-end buffer device for a semi-trailer to prevent rear-end collisions. It includes a first buffer plate 1, a first fixed shaft 101 fixedly connected to one side of the first buffer plate 1, a first connecting plate 102 movably connected to the surface of the first fixed shaft 101, a connecting shaft 103 movably connected to the end of the first connecting plate 102 away from the first fixed shaft 101, a second connecting plate 104 movably connected to the surface of the connecting shaft 103, a second fixed shaft 105 movably connected to the end of the second connecting plate 104 away from the connecting shaft 103, and a second buffer plate 106 fixedly connected to one side of the second fixed shaft 105. During operation, the outermost first protective plate 4 and the second protective plate 401 form double protection. The buffer protection block 5 fixed to the outside of the first protective plate 4 can prevent direct damage to the buffer plate. Simultaneously, the first buffer plate 1 and the second buffer plate 401... The impact plate 106 is kept relatively stable by the connecting structure on both sides. The impact force first acts on the buffer protection block 5, and the impact force is transmitted to the first protective plate 4. The first protective plate 4 evenly distributes the force to the first buffer plate 1 to avoid excessive local force that could cause the component to break. After being subjected to force, the first buffer plate 1 moves towards the semi-trailer body, which drives the first fixed shaft 101 fixed on one side to move synchronously. The first fixed shaft 101 pulls the connecting shaft 103 through the movable first connecting plate 102. The connecting shaft 103 then pushes the second fixed shaft 105 through the second connecting plate 104, so that the second connecting plate 104 rotates around the second fixed shaft 105 and the first connecting plate 102 rotates around the first fixed shaft 101. The impact force is further absorbed by the angle change, while the first buffer plate 1 and the second buffer plate 106 move closer together smoothly to avoid displacement.

[0024] A pad 2 is fixedly connected to one side of both the first buffer plate 1 and the second buffer plate 106. A groove is provided on one side of the pad 2, and a first sliding block 201 is slidably connected in the groove. A first limiting shaft 202 is fixedly connected to one side of the first sliding block 201. A limiting plate 203 is movably connected to the surface of the first limiting shaft 202. A second limiting shaft 204 is movably connected to the end of the limiting plate 203 away from the first limiting shaft 202. A second sliding block 205 is fixedly connected to one side of the second limiting shaft 204. During operation, when the first buffer plate 1 and the second buffer plate 106 are relatively close, the first sliding block 201 slides along the groove of the pad 2 towards the second sliding block 205, and the second sliding block 205 slides in the opposite direction. During the sliding process, the limiting plate 203 rotates around the first limiting shaft 202 and the second limiting shaft 204. Through the displacement of the sliding block and the rotation of the limiting plate 203, part of the impact force is converted into lateral sliding, thereby achieving buffering.

[0025] A first telescopic block 3 is fixedly connected to the side of the second buffer plate 106 near the first buffer plate 1. A second telescopic block 301 is sleeved on one end of the first telescopic block 3. A first connecting plate 302 and a second connecting plate 303 are fixedly connected to one side of the first telescopic block 3 and the second telescopic block 301, respectively. A first telescopic rod 304 is fixedly connected to the side of the first connecting plate 302 near the second connecting plate 303. A second telescopic rod 305 is sleeved on one end of the first telescopic rod 304. During operation, as the first buffer plate 1 and the second buffer plate 106 continue to approach each other, the second telescopic block 301 slides towards the inner wall of the first telescopic block 3, increasing the sleeve length between the two. At the same time, the first connecting plate 302 on one side of the first telescopic block 3 and the second connecting plate 303 on one side of the second telescopic block 301 approach each other synchronously, causing the first telescopic rod 304 to slide towards the inner wall of the second telescopic rod 305, ultimately minimizing the impact force and preventing it from being transmitted to the main body of the semi-trailer.

[0026] The second telescopic block 301 is fixedly connected to the first buffer plate 1.

[0027] A first protective plate 4 is fixedly connected to the side of the first buffer plate 1 away from the second buffer plate 106, and a second protective plate 401 is fixedly connected to the side of the second buffer plate 106 away from the first buffer plate 1.

[0028] A buffer protection block 5 is fixedly connected to the side of the first protective plate 4 away from the first buffer plate 1.

[0029] The working principle and usage process of this utility model are as follows: First, the outermost first protective plate 4 and the second protective plate 401 form a double protection. The buffer protection block 5 fixed to the outside of the first protective plate 4 can prevent direct damage to the buffer plate. Simultaneously, the first buffer plate 1 and the second buffer plate 106 maintain relative stability through the connecting structure on both sides. The impact force first acts on the buffer protection block 5, and then is transmitted to the first protective plate 4. The first protective plate 4 evenly distributes the force to the first buffer plate 1, preventing excessive local stress that could lead to component breakage. After being subjected to force, the first buffer plate 1 moves towards the semi-trailer body, causing the first fixed shaft 101 fixed on one side to move synchronously. The first fixed shaft 101 pulls the connecting shaft 103 through the movable first connecting plate 102. The connecting shaft 103 then pushes the second fixed shaft 105 through the second connecting plate 104, causing the second connecting plate 104 to rotate around the second fixed shaft 105 and the first connecting plate 102 to rotate around the first fixed shaft 101. This rotation is achieved through changes in angle. To further absorb the impact force, the first buffer plate 1 and the second buffer plate 106 are brought closer together smoothly to avoid displacement. When the first buffer plate 1 and the second buffer plate 106 are relatively close, the first sliding block 201 slides along the groove of the pad block 2 towards the second sliding block 205, while the second sliding block 205 slides in the opposite direction. During the sliding process, the limiting plate 203 rotates around the first limiting axis 202 and the second limiting axis 204. Through the displacement of the sliding block and the rotation of the limiting plate 203, part of the impact force is converted into lateral sliding to achieve buffering. As the first buffer plate 1 and the second buffer plate 106 continue to approach each other, the second telescopic block 301 slides towards the inner wall of the first telescopic block 3, increasing the sleeve length between the two. At the same time, the first connecting plate 302 on one side of the first telescopic block 3 and the second connecting plate 303 on one side of the second telescopic block 301 approach each other synchronously, driving the first telescopic rod 304 to slide towards the inner wall of the second telescopic rod 305, ultimately minimizing the impact force and preventing it from being transmitted to the main body of the semi-trailer.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rear-end buffer device for preventing rear-end collisions on a semi-trailer, comprising a first buffer plate (1), characterized in that: A first fixed shaft (101) is fixedly connected to one side of the first buffer plate (1), a first connecting plate (102) is movably connected to the surface of the first fixed shaft (101), a connecting shaft (103) is movably connected to the end of the first connecting plate (102) away from the first fixed shaft (101), a second connecting plate (104) is movably connected to the surface of the connecting shaft (103), a second fixed shaft (105) is movably connected to the end of the second connecting plate (104) away from the connecting shaft (103), and a second buffer plate (106) is fixedly connected to one side of the second fixed shaft (105).

2. The rear-end buffer device for preventing rear-end collisions of a semi-trailer according to claim 1, characterized in that: A pad (2) is fixedly connected to one side of both the first buffer plate (1) and the second buffer plate (106). A groove is provided on one side of the pad (2). A first sliding block (201) is slidably connected in the groove. A first limiting shaft (202) is fixedly connected to one side of the first sliding block (201). A limiting plate (203) is movably connected to the surface of the first limiting shaft (202). A second limiting shaft (204) is movably connected to one end of the limiting plate (203) away from the first limiting shaft (202). A second sliding block (205) is fixedly connected to one side of the second limiting shaft (204).

3. The rear buffer device for preventing rear-end collisions of a semi-trailer according to claim 1, characterized in that: The second buffer plate (106) is fixedly connected to the side of the first buffer plate (1) with a first telescopic block (3). One end of the first telescopic block (3) is sleeved with a second telescopic block (301). The first telescopic block (3) and the second telescopic block (301) are respectively fixedly connected to one side with a first connecting plate (302) and a second connecting plate (303). The first connecting plate (302) is fixedly connected to the side of the second connecting plate (303) with a first telescopic rod (304). One end of the first telescopic rod (304) is sleeved with a second telescopic rod (305).

4. A rear-end buffer device for preventing rear-end collisions on a semi-trailer according to claim 3, characterized in that: The second telescopic block (301) is fixedly connected to the first buffer plate (1).

5. A rear-end buffer device for preventing rear-end collisions on a semi-trailer according to claim 1, characterized in that: A first protective plate (4) is fixedly connected to the side of the first buffer plate (1) away from the second buffer plate (106), and a second protective plate (401) is fixedly connected to the side of the second buffer plate (106) away from the first buffer plate (1).

6. A rear-end buffer device for preventing rear-end collisions on a semi-trailer according to claim 5, characterized in that: A buffer protection block (5) is fixedly connected to the side of the first protective plate (4) away from the first buffer plate (1).

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