Gradient anti-collision cushion

Abstract

The utility model relates to the technical field of anti-collision buffering, and provides a gradient anti-collision buffering cushion which comprises an installation shell, and a first buffering area, a second buffering area and a third buffering area are sequentially arranged in the installation shell. A first transverse honeycomb unit, a second transverse honeycomb unit and a third transverse honeycomb unit are respectively arranged in the first buffer area, the second buffer area and the third buffer area along the length direction of the vertical mounting shell, and each of the first transverse honeycomb unit, the second transverse honeycomb unit and the third transverse honeycomb unit comprises a honeycomb core; and the sizes of the honeycomb cores of the first transverse honeycomb unit, the second transverse honeycomb unit and the third transverse honeycomb unit are reduced in a gradient manner. By arranging the three buffering areas and the gradient honeycomb core structure, collision energy is absorbed, the collision energy can be dispersed, impact force is smoothly attenuated, the buffering effect is better, the three-level buffering areas are matched with the gradient of the transverse honeycomb units and the gradient of the longitudinal honeycomb units, a three-dimensional energy dissipation network is formed, and step-by-step dissipation of the collision energy is achieved.

Description

Technical Field

[0001] This utility model relates to the field of anti-collision buffer technology, and in particular to a gradient anti-collision buffer pad. Background Technology

[0002] The crash buffer vehicle is parked behind the construction area. The buffer pads of the crash buffer vehicle absorb the impact energy of rear-end collisions, which helps protect the safety of road maintenance workers and equipment during highway maintenance.

[0003] Currently, traditional crash cushioning pads are homogeneous, with collision energy concentrated on the surface, which can easily lead to instantaneous overload and breakage of the structure, resulting in low cushioning efficiency. The abrupt change in the cushioning performance of homogeneous traditional crash cushioning pads makes it impossible to achieve smooth attenuation of impact force, which may cause secondary impacts to the protected object. At the same time, the homogeneous traditional crash cushioning pad structure cannot simultaneously achieve high strength (resistance to initial impact) and high flexibility (deep cushioning), resulting in the inability to optimize the cushioning stroke and weight.

[0004] Therefore, a gradient anti-collision buffer pad is proposed to address the above problems. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by developing a gradient anti-collision buffer pad. This invention can disperse collision energy, smoothly attenuate impact force, and achieve better collision buffering effect.

[0006] The technical solution to the technical problem solved by this utility model is as follows: This utility model provides a gradient anti-collision buffer pad, including a mounting shell. A first buffer zone, a second buffer zone, and a third buffer zone are sequentially arranged inside the mounting shell. The first buffer zone, the second buffer zone, and the third buffer zone are separated by a horizontal partition. A first horizontal honeycomb unit, a second horizontal honeycomb unit, and a third horizontal honeycomb unit are respectively arranged in the first buffer zone, the second buffer zone, and the third buffer zone along the direction perpendicular to the length of the mounting shell. A vertical partition is arranged in the middle of the mounting shell along the length parallel to the mounting shell to fix the first horizontal honeycomb unit, the second horizontal honeycomb unit, and the third horizontal honeycomb unit. The first horizontal honeycomb unit, the second horizontal honeycomb unit, and the third horizontal honeycomb unit all include a honeycomb core. The size of the honeycomb core of the first horizontal honeycomb unit, the second horizontal honeycomb unit, and the third horizontal honeycomb unit decreases in a gradient.

[0007] As an optimization, a first longitudinal honeycomb unit, a second longitudinal honeycomb unit, and a third longitudinal honeycomb unit are respectively arranged along the length of the mounting housing in the first buffer zone, the second buffer zone, and the third buffer zone. The first longitudinal honeycomb unit is arranged between the first transverse honeycomb unit and the two side walls of the mounting housing. The front end of the first longitudinal honeycomb unit is connected to the front inner wall of the mounting housing, and the rear end of the first longitudinal honeycomb unit is connected to the transverse partition between the first buffer zone and the second buffer zone. Several sets of buffer honeycomb units are also arranged between the front end of the first transverse honeycomb unit and the front inner wall of the mounting housing. The buffer honeycomb units are arranged along the length of the mounting housing. The second longitudinal honeycomb unit is arranged between the second transverse honeycomb unit and the two side walls of the mounting housing. The front end of the second longitudinal honeycomb unit is connected to the second transverse honeycomb unit, and the rear end of the second longitudinal honeycomb unit is connected to the transverse partition between the second buffer zone and the third buffer zone. The third longitudinal honeycomb unit is arranged between the third transverse honeycomb unit and the two side walls of the mounting housing. The front end of the third longitudinal honeycomb unit is connected to the transverse partition between the second buffer zone and the third buffer zone, and the rear end of the third longitudinal honeycomb unit is connected to the rear inner wall of the mounting housing.

[0008] As an optimization, the first horizontal honeycomb unit, the second horizontal honeycomb unit, and the third horizontal honeycomb unit also include an upper honeycomb plate and a lower honeycomb plate. The upper honeycomb plate and the lower honeycomb plate are vertically arranged in the mounting housing along the length direction of the mounting housing, and a honeycomb core is arranged between the upper honeycomb plate and the lower honeycomb plate.

[0009] As an optimization, the cell core side lengths of the first, second, and third horizontal cell units are 25mm, 20mm, and 15mm, respectively.

[0010] As an optimization, the structures of the first vertical cell and the buffer cell are the same as those of the first horizontal cell, and the structures of the second vertical cell and the third vertical cell are the same as those of the second horizontal cell and the third horizontal cell, respectively.

[0011] As an optimization, a cover plate is provided on the top of the mounting housing, and a fixing plate connected to the vehicle body is provided at the rear end. The thickness of both the mounting housing and the transverse partition is 2mm.

[0012] As an optimization, a riveting plate for connecting the mounting housing and the cover plate is also included, the riveting plate being "L" shaped.

[0013] As an optimization, a collision contact plate is provided at the front end of the mounting housing. The collision contact plate includes a straight plate and two oblique plates. The two oblique plates are respectively located at both ends of the straight plate, and the ends of the two oblique plates away from the straight plate are connected to the mounting housing.

[0014] As an optimization, the direct plate is connected to the mounting housing via a connecting plate.

[0015] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] 1. By setting up three buffer zones and a gradient honeycomb core structure to absorb collision energy, the collision energy can be dispersed, the impact force can be smoothly attenuated, and the buffering effect can be better. The three-level buffer zone and the gradient of the horizontal and vertical honeycomb units form a three-dimensional energy dissipation network, realizing the step-by-step dissipation of collision energy.

[0017] 2. When the gradient crash barrier is impacted, the car first contacts the collision contact plate at the collision end of the gradient crash barrier, which guides the collision, making the impact more complete and correcting the car's collision posture. The car compresses the first buffer zone. If the first buffer zone cannot completely absorb the collision energy, the car further intrudes into the crash barrier, compressing the second buffer zone. If the first and second buffer zones cannot completely absorb the collision energy, the car further intrudes into the crash barrier, compressing the third honeycomb unit. The entire gradient crash barrier fully impacts the collision, completing the energy absorption task and protecting the lives of drivers and road maintenance workers. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] Figure 1 This is an overall structural diagram of the present invention;

[0020] Figure 2 This is a diagram of the internal structure of the present invention;

[0021] Figure 3 This is a top view of the internal structure of this utility model;

[0022] Figure 4 This is a structural diagram of the honeycomb unit of this utility model;

[0023] Figure 5 This utility model Figure 4 AA section diagram;

[0024] Figure 6 This utility model Figure 5 Enlarged view at point B in the middle;

[0025] Figure 7 The force-displacement curves are shown for three different gradient models of this utility model.

[0026] Figure 8 The force-displacement curves are for the non-gradient and tri-gradient collision ends of this utility model.

[0027] In the diagram, 1 is the collision contact plate; 101 is the direct plate; 102 is the miter plate; 2 is the first buffer zone; 3 is the second buffer zone; 4 is the transverse partition; 5 is the third buffer zone; 6 is the fixing plate; 7 is the mounting housing; 8 is the third transverse honeycomb unit; 9 is the second transverse honeycomb unit; 10 is the first transverse honeycomb unit; 11 is the cover plate; 12 is the riveting plate; 13 is the vertical partition; 14 is the upper honeycomb plate; 15 is the lower honeycomb plate; 16 is the honeycomb core; 17 is the connecting plate; 18 is the first longitudinal honeycomb unit; 19 is the second longitudinal honeycomb unit; 20 is the third longitudinal honeycomb unit; and 21 is the buffer honeycomb unit. Detailed Implementation

[0028] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] This embodiment provides a gradient anti-collision buffer pad, such as Figures 1-3As shown, the system includes a mounting housing 7, within which a first buffer zone 2, a second buffer zone 3, and a third buffer zone 5 are sequentially arranged. These three buffer zones are separated by a transverse partition 4. Within each of the three buffer zones, a first horizontal honeycomb unit 10, a second horizontal honeycomb unit 9, and a third horizontal honeycomb unit 8 are respectively arranged along the length perpendicular to the mounting housing 7. A vertical partition 13, parallel to the length of the mounting housing 7, is located in the middle of the mounting housing 7 to fix the first horizontal honeycomb unit 10, the second horizontal honeycomb unit 9, and the third horizontal honeycomb unit 8. Each of the three horizontal honeycomb units includes a honeycomb core 16, with the size of the honeycomb core 16 decreasing in a gradient from one to the other. By setting up three buffer zones and a gradient honeycomb core structure, the energy of a collision can be absorbed, allowing the collision energy to be dispersed, the impact force to attenuate smoothly, and the buffering effect to be better.

[0031] In this embodiment, a first longitudinal honeycomb unit 18, a second longitudinal honeycomb unit 19, and a third longitudinal honeycomb unit 20 are respectively arranged along the length direction of the mounting housing 7 in the first buffer zone 2, the second buffer zone 3, and the third buffer zone 5. The first longitudinal honeycomb unit 18 is disposed between the first transverse honeycomb unit 10 and the two side walls of the mounting housing 7. The front end of the first longitudinal honeycomb unit 18 is connected to the front inner wall of the mounting housing 7, and the rear end of the first longitudinal honeycomb unit 18 is connected to the transverse partition 4 between the first buffer zone 2 and the second buffer zone 3. Several sets of buffer honeycomb units 21 are also arranged between the front end of the first transverse honeycomb unit 10 and the front inner wall of the mounting housing 7. The first vertical honeycomb unit 21 is arranged along the length of the mounting housing 7; the second vertical honeycomb unit 19 is arranged between the second horizontal honeycomb unit 9 and the two side walls of the mounting housing 7, with the front end of the second vertical honeycomb unit 19 connected to the second horizontal honeycomb unit 9 and the rear end of the second vertical honeycomb unit 19 connected to the transverse partition 4 between the second buffer zone 3 and the third buffer zone 5; the third vertical honeycomb unit 20 is arranged between the third horizontal honeycomb unit 8 and the two side walls of the mounting housing 7, with the front end of the third vertical honeycomb unit 20 connected to the transverse partition 4 between the second buffer zone 3 and the third buffer zone 5 and the rear end of the third vertical honeycomb unit 20 connected to the rear inner wall of the mounting housing 7. Through the gradient cooperation of the three-level buffer zone and the horizontal and vertical honeycomb units, a three-dimensional energy dissipation network is formed, realizing the stepwise dissipation of collision energy.

[0032] The mounting housing 7 has a cover plate 11 on top and a fixing plate 6 connected to the vehicle body at the rear. Both the mounting housing 7 and the transverse partition 4 are 2mm thick. The fixing plate 6 secures the entire gradient anti-collision buffer pad to the rear of the anti-collision buffer vehicle, providing support and fixation. The honeycomb core 16 and honeycomb panel, the mounting housing 7, the transverse partition 4 and the vertical partition 13 are all made of 3-series aluminum alloy, while the cover plate 11 and the fixing plate 6 are made of Q355B material.

[0033] It also includes a riveting plate 12 for connecting the mounting housing 7 and the cover plate 11. The riveting plate 12 is L-shaped. The L-shape of the riveting plate 12 connects the cover plate 11 to the mounting housing 7, ensuring overall rigidity and facilitating maintenance and replacement.

[0034] like Figures 4-6 As shown, the first horizontal honeycomb unit 10, the second horizontal honeycomb unit 9 and the third horizontal honeycomb unit 8 also include an upper honeycomb plate 14 and a lower honeycomb plate 15. The upper honeycomb plate 14 and the lower honeycomb plate 15 are vertically arranged in the mounting housing 7 along the length direction of the vertical mounting housing 7, and a honeycomb core 16 is arranged between the upper honeycomb plate 14 and the lower honeycomb plate 15.

[0035] The side lengths of the honeycomb core 16 in the first horizontal honeycomb unit 10, the second horizontal honeycomb unit 9, and the third horizontal honeycomb unit 8 are 25mm, 20mm, and 15mm, respectively. The initial impact kinetic energy is absorbed through the plastic deformation of the 25mm honeycomb core 16; the 20mm honeycomb core 16 further dissipates energy and reduces the peak acceleration; and the 15mm honeycomb core provides final rigid support to prevent breakdown.

[0036] The structures of the first vertical cell unit 18 and the buffer cell unit 21 are the same as those of the first horizontal cell unit 10. The structures of the second vertical cell unit 19 and the third vertical cell unit 20 are the same as those of the second horizontal cell unit 9 and the third horizontal cell unit 8, respectively.

[0037] Example 2:

[0038] like Figure 3 As shown, a collision contact plate 1 is provided at the front end of the mounting housing 7. The collision contact plate 1 includes a direct plate 101 and two inclined plates 102. The two inclined plates 102 are respectively disposed at both ends of the direct plate 101, and the ends of the two inclined plates 102 away from the direct plate 101 are connected to the mounting housing 7. The direct plate 101 and the mounting housing 7 are connected by a connecting plate 17. The combination of the direct plate 101 and the inclined plates 102 achieves the initial diversion of the collision force.

[0039] Work process:

[0040] When the gradient anti-collision buffer is impacted, the car first contacts the collision contact plate 1 at the collision end of the gradient anti-collision buffer, which guides the collision, making the collision more complete and correcting the car's collision posture. Furthermore, the car compresses the first buffer zone 2, and absorbs energy through the deformation of the honeycomb core 16, upper honeycomb plate 14 and lower honeycomb plate 15 inside the first buffer zone 2. The collision intensity is low, and the deformation mainly occurs in the first buffer zone 2. The honeycomb of the other two buffer zones can be recycled and reused.

[0041] Furthermore, the first buffer zone 2 cannot completely absorb the collision energy, and the car further intrudes into the anti-collision buffer pad, compressing the second buffer zone 3. The energy is absorbed through the deformation of the honeycomb core 16, upper honeycomb plate 14 and lower honeycomb plate 15 inside the second buffer zone 3. The collision intensity is high, and the deformation mainly occurs in the first buffer zone 2 and the second buffer zone 3. The honeycomb inside the third buffer zone 5 can be recycled and reused.

[0042] Furthermore, the first buffer zone 2 and the second buffer zone 3 cannot completely absorb the collision energy, and the car further intrudes into the anti-collision buffer pad, compressing the third honeycomb unit 8. Energy is absorbed through the deformation of the honeycomb core 16, upper honeycomb plate 14 and lower honeycomb plate 15 inside the third honeycomb unit 8. The collision intensity is the highest, and the entire gradient anti-collision buffer pad fully impacts, completing the energy absorption task and protecting the lives of drivers and road maintenance workers.

[0043] like Figure 7 As shown, the first peak force remains unchanged in both the three-gradient and no-gradient models, but the second peak force decreases linearly from no-gradient to three-gradient. Compared with the no-gradient model, the second peak force of the three-gradient model decreases by 36.59%. In the force-displacement graph of the entire stroke, the front-end mechanics shows no-gradient > three-gradient, while the rear-end mechanics shows no-gradient < three-gradient. The slope of the overall force-displacement curve increases with the increase of gradient. Compared with the no-gradient model, the three-gradient model improves the specific energy absorption by 5.5%.

[0044] like Figure 8 As shown, the three-gradient setting can effectively reduce the energy accumulation rate, making the collision process smoother. It can be clearly seen that the three-gradient setting of the anti-collision buffer pad can greatly reduce the impact force compared with the no-gradient setting.

[0045] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A gradient anti-collision buffer pad, comprising a mounting housing (7), characterized in that: The first buffer zone (2), the second buffer zone (3) and the third buffer zone (5) are arranged sequentially inside the mounting housing (7). The first buffer zone (2), the second buffer zone (3) and the third buffer zone (5) are separated by a horizontal partition (4). The first buffer zone (2), the second buffer zone (3) and the third buffer zone (5) are respectively arranged along the length direction perpendicular to the mounting housing (7) with a first horizontal honeycomb unit (10), a second horizontal honeycomb unit (9) and a third horizontal honeycomb unit (8). The middle part of the mounting housing (7) is arranged along the length parallel to the mounting housing (7) with a vertical partition (13) for fixing the first horizontal honeycomb unit (10), the second horizontal honeycomb unit (9) and the third horizontal honeycomb unit (8). The first horizontal honeycomb unit (10), the second horizontal honeycomb unit (9) and the third horizontal honeycomb unit (8) all include a honeycomb core (16). The size of the honeycomb core (16) of the first horizontal honeycomb unit (10), the second horizontal honeycomb unit (9) and the third horizontal honeycomb unit (8) decreases in a gradient.

2. The gradient anti-collision buffer pad according to claim 1, characterized in that: Within the first buffer zone (2), the second buffer zone (3), and the third buffer zone (5), along the length of the mounting housing (7), a first longitudinal honeycomb unit (18), a second longitudinal honeycomb unit (19), and a third longitudinal honeycomb unit (20) are respectively provided. The first longitudinal honeycomb unit (18) is located between the first transverse honeycomb unit (10) and the two side walls of the mounting housing (7). The front end of the first longitudinal honeycomb unit (18) is connected to the front inner wall of the mounting housing (7), and the rear end of the first longitudinal honeycomb unit (18) is connected to the transverse partition (4) between the first buffer zone (2) and the second buffer zone (3). Several sets of buffer honeycomb units (21) are also provided between the front end of the first transverse honeycomb unit (10) and the front inner wall of the mounting housing (7). The element (21) is arranged along the length direction of the mounting housing (7); the second longitudinal honeycomb unit (19) is arranged between the second transverse honeycomb unit (9) and the two side walls of the mounting housing (7), the front end of the second longitudinal honeycomb unit (19) is connected to the second transverse honeycomb unit (9), and the rear end of the second longitudinal honeycomb unit (19) is connected to the transverse partition (4) between the second buffer zone (3) and the third buffer zone (5); the third longitudinal honeycomb unit (20) is arranged between the third transverse honeycomb unit (8) and the two side walls of the mounting housing (7), the front end of the third longitudinal honeycomb unit (20) is connected to the transverse partition (4) between the second buffer zone (3) and the third buffer zone (5), and the rear end of the third longitudinal honeycomb unit (20) is connected to the rear inner wall of the mounting housing (7).

3. The gradient anti-collision buffer pad according to claim 2, characterized in that: The first horizontal honeycomb unit (10), the second horizontal honeycomb unit (9) and the third horizontal honeycomb unit (8) also include an upper honeycomb plate (14) and a lower honeycomb plate (15). The upper honeycomb plate (14) and the lower honeycomb plate (15) are vertically arranged in the mounting housing (7) along the length direction of the vertical mounting housing (7). A honeycomb core (16) is arranged between the upper honeycomb plate (14) and the lower honeycomb plate (15).

4. The gradient anti-collision buffer pad according to claim 3, characterized in that: The side lengths of the honeycomb cores (16) of the first horizontal honeycomb unit (10), the second horizontal honeycomb unit (9), and the third horizontal honeycomb unit (8) are 25mm, 20mm, and 15mm, respectively.

5. The gradient anti-collision buffer pad according to claim 4, characterized in that: The structures of the first vertical cell unit (18) and the buffer cell unit (21) are the same as those of the first horizontal cell unit (10), and the structures of the second vertical cell unit (19) and the third vertical cell unit (20) are the same as those of the second horizontal cell unit (9) and the third horizontal cell unit (8), respectively.

6. The gradient anti-collision buffer pad according to claim 1 or 2, characterized in that: The top of the mounting housing (7) is provided with a cover plate (11), and the rear end is provided with a fixing plate (6) connected to the vehicle body. The thickness of the mounting housing (7) and the transverse partition (4) is 2mm.

7. The gradient anti-collision buffer pad according to claim 6, characterized in that: It also includes a riveting plate (12) for connecting the mounting housing (7) and the cover plate (11), the riveting plate (12) being "L" shaped.

8. The gradient anti-collision buffer pad according to claim 1 or 2, characterized in that: The front end of the mounting housing (7) is provided with a collision contact plate (1). The collision contact plate (1) includes a direct plate (101) and two oblique plates (102). The two oblique plates (102) are respectively located at both ends of the direct plate (101). The ends of the two oblique plates (102) away from the direct plate (101) are connected to the mounting housing (7).

9. The gradient anti-collision buffer pad according to claim 8, characterized in that: The direct plate (101) is connected to the mounting housing (7) via a connecting plate (17).

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