Arched multiple anti-collision buffering device

Abstract

The invention discloses an arched multiple anti-collision buffering device, and relates to the technical field of building structure collision resistance, an arched anti-collision layer comprises an arched outer plate, an arched foamed aluminum plate, an arched inner plate, an end limiting square steel pipe and an anti-collision layer high-strength bolt; the energy absorption layer comprises a middle foamed aluminum plate, end foamed aluminum plates, Z-shaped positioning plates, a bottom plate and energy absorption layer high-strength bolts. The device can effectively perform impact protection on the building structure, has multiple anti-impact buffering effects, avoids direct collision between an impact object and the protected building structure, reduces impact load to protect the impact object, reduces load peak and energy transmitted to the protected building structure, and improves the safety of the building structure. And the risk of collision damage of the protected building structure is reduced. If the building structure is damaged in the process of protecting the building structure under the impact load effect by using the device, the function of the device can be recovered by directly and simply replacing the damaged part, and the economic cost and the time cost of protection can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of anti-collision of building structures, in particular to an arched multiple anti-collision buffer device. Background Art Accidental collisions directly threaten the safety of building structures and the lives and property of people inside. For example, when a building is hit, the wall is often the first part to be affected. If a small vehicle hits the outer wall of a building, it may cause local bricks and blocks to break or fall off. In some street buildings, if a vehicle loses control and hits the outer wall of a store, the decorative tiles on the outer wall may fall off, exposing the internal masonry structure. For reinforced concrete walls, the impact may cause the concrete surface to peel off, exposing the internal steel bars. In more serious cases, such as when a large truck hits a building at high speed, the wall may have through cracks or even partial wall collapse. Not only that, in the event of a collision, the column may bend, deform or shear. The column is a key vertical load-bearing member in the building structure. When the load is transferred to the beam or the floor is supported, the impact may cause the beam to bend, twist or shear.

[0002] In order to reduce the damage of building structures in collision events, the strength of the building structures themselves can be enhanced, but this also means high economic and time costs, and is not applicable to existing building structures. In addition, blindly enhancing the strength of the building structures themselves will cause most of the impact energy to be dissipated through the deformation of the impact object, which will pose a greater threat to the driver's safety if it is a car collision. Therefore, it is urgent to explore a protective device that can reduce damage to the building structure while protecting the safety of the impact object. Summary of the invention

[0003] The present invention provides an arched multiple anti-collision buffer device to solve the problem of being able to reduce the damage to the building structure as much as possible and protect the safety of the impact object in the event of a collision.

[0004] The present invention is implemented by the following technical solutions: The present invention is realized by the following technical scheme: an arched multi-anti-collision buffer device, including an arched anti-collision layer and an energy absorption layer. The arched anti-collision layer includes an arched outer plate, an arched foam aluminum plate, an arched inner plate, an end stopper tube and high-strength bolts of the anti-collision layer; the energy absorption layer includes a middle foam aluminum plate, an end foam aluminum plate, a Z-shaped positioning plate, a bottom plate and high-strength bolts of the energy absorption layer. The arched anti-collision layer is installed at the outermost side to bear the impact load, and the energy absorption layer is installed between the arched anti-collision layer and the protected building structure. During the manufacturing process, bolt holes are reserved in the arched inner plate, the end stopper tube, the Z-shaped positioning plate and the connecting plate respectively for connection with other components.

[0005] Furthermore, the arched outer panel, the arched foam aluminum panel, and the arched inner panel are arranged from top to bottom in sequence, and the arched outer panel and the arched foam aluminum panel, as well as the arched foam aluminum panel and the arched inner panel are bonded by epoxy resin; the arched outer panel and the arched foam aluminum panel have the same shape and structure and match each other, and the arched portion of the arched inner panel matches the arched foam aluminum panel, and the arched portion of the arched inner panel extends corresponding straight connecting parts on the left and right sides, and an end stop tube is arranged below each of the straight connecting parts on both sides, and the straight connecting parts are connected to the end stop tubes by multiple high-strength bolts of the anti-collision layer. The function of the arched portion is to prevent the impact object from directly colliding with the building structure, and the function of the straight connecting part is to facilitate the connection with the end stop tube.

[0006] Furthermore, the bottom plate is the bottom mounting plate of the entire device, and is also the intermediary for connecting with the protected building structure, so that the arched multi-collision buffer device is connected with the protected building structure through the bottom plate. The middle foam aluminum plate is located between the end limit tubes on the left and right sides and is set on the bottom plate; there are two end foam aluminum plates, and each is located on the outside of the end limit tube, and the end foam aluminum plate is flush with the front and rear sides of the corresponding end limit tube; there are six Z-shaped positioning plates, three on each side, and the positions are symmetrical and the same, of which the two Z-shaped positioning plates on the left are respectively located at the front and rear ends of the end limit tube and the end foam aluminum plate, and one end of the corresponding Z-shaped positioning plate is pressed on the end limit tube and the end foam aluminum plate, and the other end is installed on the bottom plate through two energy-absorbing layer high-strength bolts, and the other Z-shaped positioning plate on the left is set on the outside of the end foam aluminum plate, and one end of the corresponding Z-shaped positioning plate is pressed on the end foam aluminum plate, and the other end is installed on the bottom plate through two energy-absorbing layer high-strength bolts.

[0007] Preferably, a corresponding transverse and longitudinal buffer gap channel is reserved between each Z-shaped positioning plate and the corresponding end stop tube and the end foam aluminum plate to meet the requirement of not being able to fall out. This means that the channel size formed by the Z-shaped positioning plate should be slightly larger than the size of the end stop tube to facilitate the transverse movement of the end stop tube when the arched anti-collision layer is deformed, and the end displacement of the arched anti-collision layer is limited in the channel formed by the Z-shaped positioning plate through the end stop tube.

[0008] Preferably, the thickness and curvature of the arched anti-collision layer are designed according to the impact protection target, the strength of the middle foam aluminum plate and the end foam aluminum plates are also designed according to the impact protection target, and the shape and size of the bottom plate are designed according to the shape and size of the protected building structure.

[0009] Preferably, a rolling wheel with an axis is installed in the end limiting tube through a reserved hole.

[0010] Preferably, the foam aluminum plate material is replaced by the same type of high-efficiency energy-absorbing material and structure.

[0011] Preferably, the device adopts a plurality of detachable structures that are easy to replace.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an arched multiple anti-collision buffer device, specifically: ① The arched multiple anti-collision buffer device can avoid direct collision between the impact object and the protected building structure through the hollow area under the arched anti-collision layer, and can realize the transfer and transmission of the impact load through the movement of the end limit tube of the arched anti-collision layer. ② The arched multiple anti-collision buffer device can greatly reduce the peak value of the impact load through the plastic deformation of the arched outer plate and the arched inner plate of the arched anti-collision layer, the compression deformation of the arched foam aluminum plate and the movement of the end limit tube, thereby protecting the impact object. ③ The arched anti-collision layer can not only absorb energy through the plastic deformation of the arched outer plate and the arched inner plate and the compression deformation of the arched foam aluminum plate, but also further absorb energy by moving the end limit tube to compress the foam aluminum plate at the end of the energy-absorbing layer, thereby reducing the energy transmitted to the protected building structure. ④ When the arched anti-collision layer undergoes a large deformation under the impact load, even if it is flattened, it will continue to compress the foam aluminum plate in the middle of the energy-absorbing layer to absorb the impact energy, further reducing the energy transmitted to the protected building structure. ⑤The movement of the limit tube at the end of the arched anti-collision layer can avoid the concentrated transmission of the impact load, reducing the risk of collision damage to the protected building structure. ⑥If the device is damaged during the protection of the building structure under the impact load, the damaged part can be simply replaced to restore the function of the device, which can greatly reduce the economic and time costs of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the arched multiple anti-collision buffer device of the present invention.

[0014] Figure 2 It is a schematic diagram of installing the arched anti-collision layer of the present invention.

[0015] Figure 3 It is a schematic diagram of installing the energy absorbing layer of the present invention.

[0016] Figure 4 It is a schematic diagram of the combination of the end stop tube and the energy absorbing layer of the present invention.

[0017] Figure 5 This is a schematic diagram of the installation of the middle foam aluminum plate of the present invention.

[0018] Figure 6 This is a schematic diagram of the installation of Example 2 of the present invention.

[0019] Figure 7 It is a schematic diagram of the installation of the rolling wheel with shaft in the present invention.

[0020] Figure 8This is a deformation diagram of the arched multiple anti-collision buffer device in Example 2 of the present invention.

[0021] In the figure: 1-arched anti-collision layer, 2-energy absorbing layer, 11-arched outer plate, 12-arched foam aluminum plate, 13-arched inner plate, 131-straight connecting part, 14-end limiting pipe, 15-anti-collision layer high-strength bolts, 16-shaft rolling wheel, 21-middle foam aluminum plate, 22-end foam aluminum plate, 23-Z-type positioning plate, 24-connecting plate, 25-energy absorbing layer high-strength bolts. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention are described below in conjunction with the accompanying drawings. Example 1

[0023] An arched multi-collision buffer device, such as Figure 1 As shown, it includes two parts: an arched anti-collision layer 1 and an energy absorbing layer 2. The arched anti-collision layer 1 includes an arched outer plate 11, an arched foam aluminum plate 12, an arched inner plate 13, an end limiting tube 14 and an anti-collision layer high-strength bolt 15; the energy absorbing layer 2 includes a middle foam aluminum plate 21, an end foam aluminum plate 22, a Z-shaped positioning plate 23, a bottom plate 24 and an energy absorbing layer high-strength bolt 25.

[0024] In this embodiment, Figure 2 As shown, the arched outer panel 11, the arched foam aluminum panel 12, and the arched inner panel 13 are arranged in sequence from top to bottom, and the arched outer panel 11 and the arched foam aluminum panel 12 as well as the arched foam aluminum panel 12 and the arched inner panel 13 are bonded by epoxy resin; the arched outer panel 11 and the arched foam aluminum panel 12 have the same shape and structure and match each other, the arched part of the arched inner panel 13 matches the arched foam aluminum panel 12, and corresponding straight connecting parts 131 are extended from the left and right sides of the arched part of the arched inner panel 13, and an end limit tube 14 is arranged under each of the straight connecting parts 131 on both sides, and the straight connecting parts 131 are connected to the end limit tubes 14 through multiple anti-collision layer high-strength bolts 15.

[0025] In this embodiment, Figure 3 , Figure 4 and Figure 5As shown, the bottom plate 24 is the bottom mounting plate of the entire device, the middle foam aluminum plate 21 is located between the end limit tubes 14 on the left and right sides, and is arranged on the bottom plate 24; there are two end foam aluminum plates 22, and each is located on the outside of the end limit tube 14, and the end foam aluminum plate 22 is flush with the front and rear sides of the corresponding end limit tube 14; there are six Z-shaped positioning plates 23, three on each side, and the positions are symmetrical and the same, wherein the two Z-shaped positioning plates 23 on the left are respectively located at the front and rear ends of the end limit tube 14 and the end foam aluminum plate 22, and one end of the corresponding Z-shaped positioning plate 23 is pressed on the end limit tube 14 and the end foam aluminum plate 22, and the other end is installed on the bottom plate 24 through two energy-absorbing layer high-strength bolts 25, and the other Z-shaped positioning plate 23 on the left is arranged on the outside of the end foam aluminum plate 22, and one end of the corresponding Z-shaped positioning plate 23 is pressed on the end foam aluminum plate 22, and the other end is installed on the bottom plate 24 through two energy-absorbing layer high-strength bolts 25.

[0026] The following preferred scheme is adopted in this embodiment: the end limit tube 14 adopts a hollow square tube, and corresponding transverse and longitudinal buffer gap channels are left between each Z-shaped positioning plate 23 and the corresponding end limit tube 14 and the end foam aluminum plate 22 to meet the requirement of not being able to escape. The thickness and curvature of the arched anti-collision layer 1 are designed according to the impact protection target, the strength of the middle foam aluminum plate 21 and the end foam aluminum plate 22 are also designed according to the impact protection target, and the shape and size of the bottom plate 24 are designed according to the shape and size of the protected building structure. The foam aluminum plate material is replaced by the same type of high-efficiency energy-absorbing material and structure. The device adopts multiple detachable structures that are easy to replace.

[0027] The specific operation of this embodiment is as follows: ① Under the impact load, the arched anti-collision layer 1 begins to deform first. Due to its shape characteristics, there is a hollow area between it and the protected building structure, which can avoid direct collision between the impact object and the protected building structure. At the same time, since there is no fixed constraint at the end of the arched anti-collision layer 1, and the arched foam aluminum plate 12 is a flexible material, it can produce an unloading effect on the impact load, which can greatly reduce the peak value of the impact load and play a role in protecting the impact object, which is the first level of protection. ② The movement of the end limit tube 14 in the channel composed of the Z-shaped positioning plate 23 can make the load be transmitted to the protected building structure in a more dispersed manner, avoiding the concentrated transmission of the impact load. In this embodiment, during the deformation of the arched anti-collision layer 1, its end limit tube 14 will move in the channel composed of the Z-shaped positioning plate 23 and squeeze the end foam aluminum plate 22, which can absorb a large amount of impact energy through the compression deformation of the end foam aluminum plate 22, reducing the energy transmitted to the protected building structure, which is the second level of protection. ③ In the case of a large impact load, the arched anti-collision layer 1 and the end foam aluminum plate 22 both deformed significantly, and then the arched anti-collision layer 1 began to compress the middle foam aluminum plate 21, continuing to absorb the impact energy, and further reducing the energy transferred to the protected building structure, which is the third level of protection. ④ The thickness and curvature of the arched anti-collision layer 1, and the strength of the middle foam aluminum plate 21 and the end foam aluminum plate 22 can all be designed according to the impact protection target, and the foam aluminum plate can be replaced with other high-efficiency energy-absorbing materials and structures. ⑤ If damage occurs during the process of using the arched multiple anti-collision buffer device to protect the building structure under the impact load, the damaged part can be simply replaced to restore the function of the device, which can greatly reduce the economic and time costs of protection. Example 2

[0028] An arched multi-collision buffer device, such as Figure 6 , 7 As shown, a circular hole is reserved in the end limit tube 14, and a rolling wheel 16 with an axis is installed in the end limit tube 14 through the reserved hole. The rest is completely consistent with Example 1.

[0029] At the same time, since the end of the arched anti-collision layer 1 is a shaft rolling wheel 13, there is no fixed constraint and it is easy to move laterally, which has an unloading effect on the impact load, can greatly reduce the peak value of the impact load, and play a role in protecting the impact object. It is the first level of protection in Example 2.

[0030] To further illustrate the protective effect of the arched multiple anti-collision buffer device of the present invention under the impact load, a mass block with a mass of 300 kg was used to impact the arched multiple anti-collision buffer device at a speed of 10 m / s, and the impact energy was 15 kJ. The arched plate 11, the end limiting tube 14, the axial rolling wheel 16, the Z-type positioning plate 23 and the connecting plate 24 used in the embodiment are all made of Q235 steel with a yield strength of 235 MPa. The end foam aluminum plate 22 and the middle foam aluminum plate 21 are both made of foam aluminum with a compression platform strength of 3 MPa. In order to minimize the local damage of the arched plate 11, its thickness is set to 6 mm. The working conditions of this embodiment were numerically simulated by the finite element software LS-DYNA, and the results are as shown in the figure. Figure 8 shown.

[0031] from Figure 8 It can be seen from the simulation calculation results of the embodiment shown that, under the impact of the mass block, the arched plate 11 of the arched multi-collision buffer device first undergoes plastic deformation, and buffers the impact load through its plastic deformation. At the same time, under the impact of the mass block, the end stop tube 14 and the shaft rolling wheel 16 undergo obvious lateral displacement during the period from 0 ms to 4 ms. During the displacement, the end stop tube 14 compresses the end foam aluminum plate 22, dissipating part of the impact energy.

[0032] The scope of protection claimed by the present invention is not limited to the above specific embodiments. For those skilled in the art, the present invention may have various deformations and changes. Any modifications, improvements and equivalent substitutions made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An arched multi-collision buffer device, characterized in that: The invention comprises an arched anti-collision layer (1) and an energy absorbing layer (2), wherein the arched anti-collision layer (1) comprises an arched outer plate (11), an arched foamed aluminum plate (12), an arched inner plate (13), an end stop tube (14) and anti-collision layer high-strength bolts (15); the energy absorbing layer (2) comprises a middle foamed aluminum plate (21), an end foamed aluminum plate (22), a Z-shaped positioning plate (23), a bottom plate (24) and energy absorbing layer high-strength bolts (25); The arched outer panel (11), the arched foam aluminum plate (12), and the arched inner panel (13) are arranged in sequence from top to bottom, and the arched outer panel (11) and the arched foam aluminum plate (12) as well as the arched foam aluminum plate (12) and the arched inner panel (13) are bonded by epoxy resin; the arched outer panel (11) and the arched foam aluminum plate (12) have the same shape and structure and match each other, and the arched portion of the arched inner panel (13) matches the arched foam aluminum plate (12), and corresponding straight connecting portions (131) extend from the left and right sides of the arched portion of the arched inner panel (13), and an end stop tube (14) is arranged below each of the straight connecting portions (131) on both sides, and the straight connecting portions (131) are connected to the end stop tube (14) by a plurality of anti-collision layer high-strength bolts (15).

2. The arched multi-collision buffer device according to claim 1, characterized in that: The bottom plate (24) is the bottom mounting plate of the entire device; the middle foam aluminum plate (21) is located between the end stop tubes (14) on the left and right sides and is arranged on the bottom plate (24); two end foam aluminum plates (22) are provided and each is located outside the end stop tube (14); the end foam aluminum plates (22) are flush with the front and rear sides of the corresponding end stop tube (14); six Z-shaped positioning plates (23) are provided, three on each side and the arrangement positions are symmetrical, wherein the two Z-shaped positioning plates (23) on the left side are respectively located At the front and rear side ends of the end stop tube (14) and the end foam aluminum plate (22), one end of the corresponding Z-shaped positioning plate (23) is pressed on the end stop tube (14) and the end foam aluminum plate (22), and the other end is installed on the bottom plate (24) through two energy absorption layer high-strength bolts (25); another Z-shaped positioning plate (23) on the left side is arranged on the outside of the end foam aluminum plate (22), and one end of the corresponding Z-shaped positioning plate (23) is pressed on the end foam aluminum plate (22), and the other end is installed on the bottom plate (24) through two energy absorption layer high-strength bolts (25).

3. The arched multi-collision buffer device according to claim 2, characterized in that: Corresponding transverse and longitudinal buffer gap channels are left between each Z-shaped positioning plate (23) and the corresponding end stop tube (14) and the end foam aluminum plate (22), so as to meet the requirement of preventing the plates from falling out.

4. The arched multi-collision buffer device according to claim 3, characterized in that: The thickness and curvature of the arched anti-collision layer (1) are designed according to the impact protection target, the strength of the middle foam aluminum plate (21) and the end foam aluminum plate (22) are also designed according to the impact protection target, and the shape and size of the bottom plate (24) are designed according to the shape and size of the protected building structure.

5. The arched multi-collision buffer device according to claim 4, characterized in that: A rolling wheel (16) with an axis is installed in the end stop tube (14) through a reserved hole.

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