Freight vehicle elastic energy absorption lower protection device

Abstract

The utility model discloses an elastic energy-absorbing lower protection device for a freight vehicle, which relates to the field of vehicle safety and comprises a fixed triangular bracket, a connecting mechanism, a plug plate assembly and an elastic assembly. The fixed triangular bracket comprises a plurality of triangular brackets I which are symmetrically arranged, and a connecting plate I is arranged on one side of each triangular bracket I; an adjusting frame is arranged on one side of the first triangular frame located on the side, and a plurality of second triangular frames are arranged on one side, provided with the adjusting frame, of the first triangular frame. According to the elastic energy absorption rear lower protection device for the freight vehicle, through a stable structure formed by the multiple first tripods and the first connecting plates and a stable structure formed by the second tripods and the second connecting plates, the structural stability of the device is ensured, and the positions of the adjusting frame and the second tripods can be adjusted according to actual requirements; the two adjacent connecting mechanisms are connected through the plug plate assembly, the overall connectivity of the device is enhanced, and the elastic assembly enables the device to effectively absorb energy when the device is subjected to external impact.

Description

Technical Field

[0001] This utility model relates to vehicle safety technology, specifically to a resilient energy-absorbing underbody protection device for freight vehicles. Background Technology

[0002] Trucks are vehicles used to transport goods, with large cargo space and load-bearing capacity. They are widely used in logistics, transportation, construction and other fields. Trucks need to be equipped with anti-collision devices at the front, rear, left and right. The rear anti-collision device of a truck, also known as the "life protection barrier", is a safety protection device designed to improve the driving safety of trucks. The anti-collision device is mainly installed at the rear of the truck to prevent other vehicles (such as cars) from directly hitting and going under the rear of the truck or being rolled under the truck from the side in a rear-end collision, thereby effectively reducing personal injury and vehicle damage. The existing rear underrun protection devices of trucks mainly play a blocking role and do not have the function of energy absorption. The energy consumption of the impact is mainly the reduction of the deformation of the impacting vehicle.

[0003] Existing elastic energy-absorbing rear underrun protection devices for freight vehicles typically rely solely on their own design and material strength to withstand direct impacts from other vehicles in rear-end collisions. However, when vehicles are traveling at high speeds on highways or national roads and a rear-end collision occurs, the two vehicles can only absorb and disperse the impact energy through deformation. Excessive deformation of the colliding vehicle can lead to the risk of occupants being trapped and doors being unable to be opened, thus causing greater property damage and increasing casualties. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an elastic energy-absorbing rear protection device for freight vehicles, which provides buffering and reduces the degree of vehicle deformation when an impact occurs, so as to solve the problem that the rear protection device of the truck can only rely on its own design strength and material strength to resist the direct impact of other vehicles in the rear-end collision, resulting in large vehicle deformation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a resilient energy-absorbing underbody protection device for freight vehicles, comprising a fixed triangular bracket, a connecting mechanism, a plug plate assembly, and an elastic component:

[0006] The fixed triangular support includes several symmetrically arranged triangular frames one, one side of each of the several triangular frames one is provided with a connecting plate one, one side of one of the triangular frames one located on the side is provided with an adjusting frame, one side of the triangular frame one provided with the adjusting frame is provided with several triangular frames two, at least one of the triangular frames two is sleeved on the outside of the adjusting frame, and one side of each of the several triangular frames two is provided with a connecting plate two.

[0007] Both the side of the connecting plate 2 away from the tripod 2 and the side of the connecting plate 1 away from the tripod 1 are provided with connecting mechanisms. The connecting mechanism includes a bearing plate, and several fixing plates 1 are symmetrically arranged on the side of the bearing plate away from the fixed tripod.

[0008] Two adjacent connecting mechanisms are connected by a plug plate assembly;

[0009] An elastic component is provided between the symmetrically arranged fixing plates.

[0010] Furthermore, the fixed triangular bracket also includes several connecting rods 1 disposed at the corners between two adjacent triangular brackets 1, and several connecting rods 2 disposed at the corners between two adjacent triangular brackets 2.

[0011] Furthermore, the connecting mechanism also includes a second fixing plate, which is fixedly connected to the bearing plate and is located between two adjacent first fixing plates.

[0012] Furthermore, the elastic component includes several rotating shafts, which are arranged in a linear array on the top of the first fixed plate and pass through two symmetrically arranged first fixed plates and a second fixed plate located between two adjacent first fixed plates, extending to the bottom of the first fixed plate. Several rigid rollers arranged in a linear array are sleeved on the outside of the rotating shafts, which are located between the second fixed plate and the first fixed plate. The outer side of the rigid rollers is covered with rubber rollers.

[0013] Furthermore, the plug plate assembly includes a plug plate one for connecting two adjacent fixed plates one and a plug plate two for connecting two adjacent fixed plates two. The plug plate one includes a plurality of plug blocks one, which are disposed between two adjacent fixed plates one. A T-shaped protrusion is provided on one side of the plug block one, and a positioning block one is engaged with the plug block one through the T-shaped protrusion. An elliptical groove is symmetrically opened through the outer side of the positioning block one, and the positioning block one is fixedly connected to the two adjacent fixed plates one.

[0014] Furthermore, the plug plate 2 includes a plurality of plug blocks 2 disposed between two adjacent fixed plates 2. The plug block 2 has a protrusion on the side away from the fixed plate 2. The plug block 2 is engaged with a positioning block 2 through the protrusion. The positioning block 2 has grooves symmetrically opened through its outer side. The positioning block 2 is fixedly connected to the two adjacent fixed plates 2.

[0015] Compared with the prior art, the elastic energy-absorbing underbody protection device for freight vehicles provided by this utility model has a stable structure composed of several tripods and connecting plates set under the rear of the truck. The stable structure composed of tripods and connecting plates ensures the structural stability of the device. The adjustable frame and tripods can be adjusted in position according to actual needs, increasing the flexibility and adaptability of the device. The plug plate assembly connects two adjacent connecting mechanisms, enhancing the overall connectivity of the device. The elastic components enable the device to effectively absorb energy when subjected to external impact, reducing the damage to the freight vehicle and the vehicle colliding with it. The device as a whole can block and stop while absorbing energy, thus providing good protection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a first schematic diagram of the overall structure provided for an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the detachable structure of the fixed triangular bracket provided in an embodiment of the present utility model;

[0019] Figure 3 This is a second schematic diagram of the overall structure provided for an embodiment of the present utility model;

[0020] Figure 4 A partial structural schematic diagram provided for an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the second plug plate structure provided in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of a plug plate structure provided in an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Fixed triangular bracket; 2. Connecting mechanism; 3. Plugging plate assembly; 4. Elastic component; 11. Triangular bracket one; 12. Connecting plate one; 13. Adjusting bracket; 14. Connecting rod one; 15. Triangular bracket two; 16. Connecting rod two; 17. Connecting plate two; 21. Fixed plate one; 22. Fixed plate two; 23. Bearing plate; 31. Plugging plate one; 32. Plugging plate two; 311. Positioning block one; 312. Plugging block one; 321. Plugging block two; 322. Positioning block two; 41. Rubber roller; 42. Rigid roller; 43. Rotating shaft. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1:

[0027] Please see Figures 1-3 A resilient energy-absorbing underbody protection device for freight vehicles includes a fixed triangular bracket 1, a connecting mechanism 2, a plug plate assembly 3, and an elastic component 4.

[0028] The fixed tripod bracket 1 includes several tripods 11 arranged symmetrically. A connecting plate 12 is provided on one side of each tripod 11. An adjusting frame 13 is provided on one side of one of the tripods 11 located on the side. Several tripods 2 15 are provided on one side of the tripod 11 with the adjusting frame 13. At least one tripod 2 15 is sleeved on the outside of the adjusting frame 13. A connecting plate 2 17 is provided on one side of each of the tripods 2 15.

[0029] A connecting mechanism 2 is provided on the side of connecting plate 2 17 away from tripod 2 15 and on the side of connecting plate 12 away from tripod 11. The connecting mechanism 2 includes a bearing plate 23. Several fixing plates 21 are symmetrically arranged on the side of bearing plate 23 away from fixed tripod 1.

[0030] Two adjacent connecting mechanisms 2 are connected by a plug plate assembly 3;

[0031] An elastic component 4 is provided between the symmetrically arranged fixed plates 21.

[0032] The specific implementation is as follows: The adjusting frame 13 is fixedly connected to the connecting tripod 11 by welding or bolting. The tripod 11 is fixedly connected to the connecting plate 12 by welding. The tripod 2 15 is connected to the connecting plate 2 17 by welding or bolting. The adjusting frame 13 can move inside the tripod 2 15. The adjusting frame 13 has a protrusion on the side near the connecting plate 2 17 so that it can abut against the connecting plate 2 17 to enhance the overall load-bearing capacity of the device. The bearing plate 23 is a high-strength steel plate. The bearing plate 23 is connected to the connecting plate 12 and the connecting plate 2 17 by bolting or welding. The bearing plate 23 is also made of high-strength metal to improve the load-bearing capacity of the device during impact. The fixing plate 1 21 is fixedly connected to the bearing plate 23 by welding. The plug plate assembly 3 is used to connect the connecting mechanism 2 and fill the connection gap between two adjacent connecting mechanisms 2, so that the device can adjust the installation size while ensuring the load-bearing capacity of the device. The elastic component 4 is used to provide a certain buffer when an impact occurs and to rotate to release a certain impact force.

[0033] The fixed tripod 1 also includes several connecting rods 14 disposed at the corners between two adjacent tripods 11, and several connecting rods 16 disposed at the corners between two adjacent tripods 15.

[0034] The specific implementation method is as follows: Tripod 11 and connecting rod 14 are fixedly connected together by welding or bolts, tripod 2 15 is fixed together with connecting rod 2 16 by welding or threaded connection, and connecting rod 14 adjacent to connecting plate 12 is connected to connecting plate 12 as a whole by welding.

[0035] The connecting mechanism 2 also includes a second fixing plate 22, which is fixedly connected to the bearing plate 23 and is located between two adjacent first fixing plates 21.

[0036] The specific implementation method is as follows: the second fixing plate 22 is made of high-strength metal, and the second fixing plate 22 is fixed together with the bearing plate 23 by welding. The second fixing plate 22 is set in the middle of the bearing plate 23 to enhance the bearing strength of the bearing plate 23.

[0037] The elastic component 4 includes several rotating shafts 43, which are arranged in a linear array on the top of the first fixed plate 21 and pass through the two symmetrically arranged first fixed plates 21 and the second fixed plate 22 located between the two adjacent first fixed plates 21, and extend to the bottom of the first fixed plate 21. Several rigid rollers 42 arranged in a linear array are sleeved on the outside of the rotating shafts 43. The rigid rollers 42 are located between the second fixed plate 22 and the first fixed plate 21, and the outer side of the rigid rollers 42 is covered with rubber rollers 41.

[0038] The specific implementation method is as follows: the rotating shaft 43 is made of high-strength metal material, and both ends of the rotating shaft 43 are fixed to the fixing plate 21 by bolts. The rigid roller 42 is made of metal material and is rotatably connected to the rotating shaft 43. Several reinforcing ribs are welded in a circular array on the outer side of the rigid roller 42 to enhance the load-bearing strength of the rigid roller 42. At the same time, the reinforcing ribs are also used to enhance the tightness of the connection with the rubber roller 41. The rubber roller 41 is made of rubber material, which can buffer the force when an impact occurs.

[0039] Example 2:

[0040] Please see Figures 4-6This embodiment provides a technical solution based on embodiment one: the plug plate assembly 3 includes a plug plate 31 for connecting two adjacent fixed plates 21 and a plug plate 32 for connecting two adjacent fixed plates 22. The plug plate 31 includes a plurality of plug blocks 312, which are disposed between two adjacent fixed plates 21. A T-shaped protrusion is provided on one side of the plug block 312. The plug block 312 is engaged with a positioning block 311 through the T-shaped protrusion. An elliptical groove is symmetrically opened through the outer side of the positioning block 311. The positioning block 311 is fixedly connected to the two adjacent fixed plates 21.

[0041] The specific implementation method is as follows: the plug block 312 is made of metal. One side of the plug block 312 is designed with a T-shaped protrusion. This protrusion is used to engage with the positioning block 311 to ensure the stability of the plug block 312 between the fixing plates 21. The number of plug blocks 312 can be adjusted according to the distance between two adjacent fixing plates 21. The positioning block 311 has elliptical grooves. These grooves can be used to adjust the position of the positioning block 311 on the fixing plate 21 to adapt to different installation requirements. They are also used to fix the positioning block 311 to two adjacent fixing plates 21 with bolts to meet the different gap adjustment requirements of the fixing plates 21.

[0042] The second plug plate 32 includes several second plug blocks 321 disposed between two adjacent second fixed plates 22. The second plug block 321 has a protrusion on the side away from the second fixed plate 22. The second plug block 321 is engaged with a positioning block 322 through the protrusion. The positioning block 322 has grooves symmetrically opened through its outer side. The positioning block 322 is fixedly connected to the two adjacent second fixed plates 22.

[0043] The specific implementation method is as follows: the second plug 321 is made of metal and is placed between two adjacent fixing plates 22 to fill the space between the fixing plates 22. Each second plug 321 has a protruding structure on the side away from the fixing plate 22. These protrusions cooperate with the slots on the positioning block 322 to achieve a stable snap-fit ​​connection. The outer side of the positioning block 322 has symmetrical grooves, which not only enhances its structural strength but also facilitates bolt connection with the fixing plate 22, ensuring the stability and reliability of the entire second plug 32 structure.

[0044] Working principle: When in use, the operator installs the fixed triangular bracket 1 under the rear of the truck, so that the elastic component 4 faces the rear of the truck. The gap of the connecting mechanism 2 is filled by the plug plate component 3. When an impact occurs, the rubber roller 41 buffers the impact force. At the same time, the rubber roller 41 and the rigid roller 42 rotate around the rotating shaft 43 to buffer the impact.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A resilient energy-absorbing underbody protection device for freight vehicles, characterized in that, Includes a fixed triangular bracket (1), a connecting mechanism (2), a stopper plate assembly (3), and an elastic component (4): The fixed triangular support (1) includes a plurality of symmetrically arranged triangular supports (11), a connecting plate (12) is provided on one side of the plurality of triangular supports (11), an adjusting frame (13) is provided on one side of one of the triangular supports (11) located on the side, a plurality of triangular supports (15) are provided on one side of the triangular support (11) with the adjusting frame (13), at least one of the triangular supports (15) is sleeved on the outside of the adjusting frame (13), and a connecting plate (17) is provided on one side of the plurality of triangular supports (15). The connecting plate 2 (17) is provided with a connecting mechanism (2) on the side away from the tripod 2 (15) and the connecting plate 1 (12) is provided with a connecting mechanism (2) on the side away from the tripod 1 (11). The connecting mechanism (2) includes a bearing plate (23). Several fixing plates 1 (21) are symmetrically arranged on the side of the bearing plate (23) away from the fixed tripod (1). Two adjacent connecting mechanisms (2) are connected by a plug plate assembly (3); An elastic component (4) is provided between the symmetrically arranged fixing plates (21).

2. The elastic energy-absorbing underbody protection device for freight vehicles according to claim 1, characterized in that, The fixed triangular bracket (1) also includes several connecting rods (14) disposed at the corners between two adjacent triangular brackets (11), and several connecting rods (16) disposed at the corners between two adjacent triangular brackets (15).

3. The elastic energy-absorbing underbody protection device for freight vehicles according to claim 1, characterized in that, The connecting mechanism (2) further includes a second fixing plate (22), which is fixedly connected to the bearing plate (23) and is located between two adjacent first fixing plates (21).

4. The elastic energy-absorbing underbody protection device for freight vehicles according to claim 3, characterized in that, The elastic component (4) includes a plurality of rotating shafts (43), which are arranged in a linear array on the top of the first fixed plate (21) and pass through the two symmetrically arranged first fixed plates (21) and the second fixed plate (22) located between the two adjacent first fixed plates (21), and extend to the bottom of the first fixed plate (21). A plurality of rigid rollers (42) arranged in a linear array are sleeved on the outside of the rotating shafts (43), which are located between the second fixed plate (22) and the first fixed plate (21). The outer side of the rigid rollers (42) is covered with rubber rollers (41).

5. The elastic energy-absorbing underbody protection device for freight vehicles according to claim 3, characterized in that, The plug plate assembly (3) includes a plug plate one (31) for connecting two adjacent fixed plates one (21) and a plug plate two (32) for connecting two adjacent fixed plates two (22). The plug plate one (31) includes a plurality of plug blocks one (312). The plurality of plug blocks one (312) are disposed between two adjacent fixed plates one (21). A T-shaped protrusion is provided on one side of the plug block one (312). The plug block one (312) is engaged with a positioning block one (311) through the T-shaped protrusion. An elliptical groove is symmetrically opened through the outer side of the positioning block one (311). The positioning block one (311) is fixedly connected to the two adjacent fixed plates one (21).

6. The elastic energy-absorbing underbody protection device for freight vehicles according to claim 5, characterized in that, The second plug plate (32) includes a plurality of second plug blocks (321) disposed between two adjacent second fixed plates (22). The second plug block (321) has a protrusion on the side away from the second fixed plate (22). The second plug block (321) is engaged with a second positioning block (322) through the protrusion. The second positioning block (322) has grooves symmetrically opened through its outer side. The second positioning block (322) is fixedly connected to the two adjacent second fixed plates (22).

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