CN118722473A - A multi-stage energy absorption protection device for stalled vehicle collision - Google Patents

Abstract

The present invention is applicable to the technical field of vehicle energy absorption protection devices, and provides a multi-stage energy absorption protection device for stalled vehicle collision, including a channel steel and a mounting plate, an energy absorption steel sleeve is fixed to one end face of the mounting plate, and an arc-shaped reverse cover is fixed to one end of the energy absorption steel sleeve; a multi-stage energy absorption layer is arranged inside the arc-shaped reverse cover, and an aluminum skin is arranged on the arc-shaped reverse cover; a plurality of elastic energy absorption structures are hinged on the outer arc surface of the arc-shaped reverse cover, and one end of the elastic energy absorption structure is fixedly connected to the mounting plate. The present invention utilizes materials with different energy absorption degrees to perform multi-stage energy absorption step by step during a collision, thereby ensuring the energy absorption effect during the collision and reducing the damage caused during the collision; the force generated by the collision is first converted into elastic potential energy through the elastic energy absorption structure, and then the pressure relief liquid is discharged through the pressure relief valve to release the force during the collision, which can fully absorb the force during the collision and reduce the secondary damage caused by the impact rebound of the vehicle or equipment.

Description

A multi-stage energy absorption protection device for stalled vehicle collision

Technical Field

The invention relates to the technical field of vehicle energy absorption protection devices, and more specifically, to a multi-stage energy absorption protection device for a stalled vehicle collision.

Background Art

Normally operating vehicles or equipment often fail to run according to the established track and decelerate according to the initial track due to factors such as failure of the brake device, failure of electronic components, sudden power outages, etc., resulting in the vehicle/equipment being unable to brake according to the normal method and requiring passive deceleration to stop the vehicle or equipment. In the above situation, rigid collision or violent braking is usually used to force the stalled object to stop, such as anti-collision guardrails, anti-collision speed bumps, and anti-collision rigid walls; these deceleration methods will inevitably cause damage to the vehicle or equipment and secondary damage caused by impact rebound. In some cases, there are even no anti-collision or deceleration measures, and the consequences of this situation will be even more immeasurable.

Therefore, the present invention provides a multi-stage energy absorption protection device for stalled vehicle collision, which is used in various possible stalling situations and can maximize the safety of personnel/high-precision equipment in the stalled vehicle/equipment through its own efficient energy absorption.

Summary of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multi-stage energy absorption protection device for stalled vehicle collision, which can maximize the safety of personnel/high-precision equipment in the stalled vehicle/equipment through its own efficient energy absorption.

To solve the above technical problems, the present invention is achieved through the following technical solutions:

The present invention discloses a multi-stage energy absorption protection device for a stalled vehicle collision, comprising a channel steel and a mounting plate fixed on the channel steel, wherein an energy absorption steel sleeve is fixed at the center of a circle of one end face of the channel steel away from the mounting plate, and an arc-shaped reverse cover is fixed to the end of the energy absorption steel sleeve away from the mounting plate by bolts; a multi-stage energy absorption layer is arranged inside the arc-shaped reverse cover, and an aluminum skin is arranged on the arc-shaped reverse cover; a plurality of elastic energy absorption structures are hinged on the outer arc surface of the arc-shaped reverse cover, and the end of the elastic energy absorption structure away from the arc-shaped reverse cover is fixedly connected to the mounting plate.

The elastic energy absorption structure includes a pressure relief pipe fixedly connected to the mounting plate, a pressure relief valve is installed at one end of the pressure relief pipe, a push rod passes through the other end of the pressure relief pipe, and the end of the push rod located outside the pressure relief pipe is hinged with a connecting rod hinged with the mounting plate; a spring that cooperates with the inner cavity of the pressure relief pipe is installed at the end of the push rod located inside the pressure relief pipe, and a piston that cooperates with the inner cavity of the pressure relief pipe is provided at the end of the spring away from the push rod, and a cavity in the pressure relief pipe and between the piston and the pressure relief valve is filled with pressure relief liquid.

As a preferred technical solution of the present invention, the multi-level energy absorption layer is composed of a primary energy absorption layer, a secondary energy absorption layer, a tertiary energy absorption layer, and a fourth energy absorption layer, and the primary energy absorption layer, the secondary energy absorption layer, the tertiary energy absorption layer, and the fourth energy absorption layer are arranged from soft to hard; the primary energy absorption layer is composed of energy-absorbing rubber with a thickness of 10 mm and an aluminum honeycomb panel with a thickness of 50 mm and a crush value of 2 MPa, the secondary energy absorption layer is composed of an aluminum honeycomb panel with a crush value of 2-5 MPa, the tertiary energy absorption layer is composed of an aluminum honeycomb panel with a crush value of 5-8 MPa, and the fourth energy absorption layer is composed of an aluminum honeycomb panel with a crush value of 8-11 MPa.

As a preferred technical solution of the present invention, the thickness of the aluminum honeycomb panels with different crushing values constituting the secondary energy absorbing layer, the tertiary energy absorbing layer and the quaternary energy absorbing layer are all 200 mm.

As a preferred technical solution of the present invention, the curvature of the arc-shaped reverse cover is 0-10°, a plurality of ear plates hinged to the elastic energy absorption structure are fixed on the outer arc surface of the arc-shaped reverse cover, and reinforcing ribs are fixed along the outer surface of the arc-shaped reverse cover, and the ear plates and reinforcing ribs are arranged in a circular shape and equidistantly on the outer arc surface of the arc-shaped reverse cover.

As a preferred technical solution of the present invention, a connecting plate fixedly connected to the energy-absorbing steel sleeve by bolts is fixed on the outer curved surface of the arc-shaped reverse cover. The energy-absorbing steel sleeve is a metal bellows, and one end of the energy-absorbing steel sleeve away from the connecting plate is fixedly connected to the mounting plate by bolts.

As a preferred technical solution of the present invention, the aluminum skin cover is provided with an opening end of an arc-shaped reverse cover, and the thickness of the aluminum skin is 0.5 mm-1 mm.

As a preferred technical solution of the present invention, a surface of the mounting plate connected to the channel steel is fixed with a mounting groove matching the channel steel, and the channel steel is fixedly connected to the mounting plate by bolts.

The advantages of the present invention are:

The present invention ensures the stability of the collision by arranging an arc-shaped reverse cover at the front end, and fills the arc-shaped reverse cover with energy-absorbing materials with different crushing values. The energy-absorbing materials with different degrees are arranged from soft to hard, and can perform multi-stage energy absorption step by step during the collision process, play a buffering role, ensure the energy absorption effect during the collision process, reduce the damage caused by the collision process, and ensure the safety of personnel/high-precision equipment of the stalled vehicle/equipment to the greatest extent.

The present invention arranges an elastic energy absorbing structure between the arc-shaped reverse cover and the mounting plate. When the collision force is large, the energy absorbing steel sleeve absorbs energy and deforms, and the arc-shaped reverse cover is displaced. At this time, the collision force acting on the arc-shaped reverse cover is transmitted to the elastic energy absorbing structure, and is first converted into elastic potential energy of the spring in the elastic energy absorbing structure. The force during the collision is then transmitted to the pressure relief liquid in the pressure relief pipe through the spring. The pressure relief liquid is discharged through the pressure relief valve to release the force during the collision. The force during the collision can be fully absorbed, and secondary damage to vehicles or equipment caused by impact rebound is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a multi-stage energy absorption protection device for a stalled vehicle collision according to the present invention.

FIG. 2 is a schematic structural diagram of the present invention from another perspective.

FIG. 3 is a front view of the present invention.

FIG. 4 is a schematic diagram of the cross-sectional structure of the present invention.

FIG5 is a schematic diagram of the structure in which the energy-absorbing steel sleeve, the arc-shaped reverse cover, and the aluminum skin cooperate with each other.

FIG. 6 is a schematic structural diagram of an arc-shaped reverse cover.

FIG. 7 is a schematic diagram of the structure of a multi-stage energy absorption layer and a secondary energy absorption layer.

FIG. 8 is a schematic structural diagram of an elastic energy absorbing structure.

FIG. 9 is a schematic diagram of the cross-sectional structure of the elastic energy absorbing structure.

FIG. 10 is a schematic structural diagram of another use state of the present invention.

FIG. 11 is a schematic diagram of the structure of a multi-stage energy absorbing layer wrapped with a silicone rubber wrapping layer.

In the attached figure: 1. channel steel; 2. mounting plate; 3. energy absorbing steel sleeve;

4. arc-shaped reverse cover; 401. ear plate; 402. reinforcing rib plate; 403. connecting plate;

5. Multi-level energy absorption layer; 501. First level energy absorption layer; 502. Second level energy absorption layer; 503. Third level energy absorption layer; 504. Fourth level energy absorption layer;

6. Aluminum skin;

7. Elastic energy absorption structure; 701. Pressure relief pipe; 702. Pressure relief valve; 703. Push rod; 704. Connecting rod; 705. Spring; 706. Piston; 707. Pressure relief liquid;

8. Silicone rubber wrapping layer; 9. Aluminum plate bonding layer.

DETAILED DESCRIPTION

In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

Embodiment 1: Please refer to the structural schematic diagrams of Figures 1-11. The present invention provides the following technical solutions:

Specifically, it refers to a multi-stage energy absorption protection device for a stalled vehicle collision, comprising a channel steel 1 and a mounting plate 2 fixed on the channel steel 1. The channel steel 1 is preferably a thickened channel steel, which is fixed to the mounting plate 2 by bolts. In addition, when in use, the channel steel 1 not only plays a role in enhancing the structural strength, but also plays a role in the installation and connection of the energy absorption protection device to be installed. A surface of the mounting plate 2 connected to the channel steel 1 is fixed with a mounting groove matched with the channel steel 1. The mounting plate 2 is equivalent to a rigid wall in actual use and can protect the whole in the event of a collision. An energy absorbing steel sleeve 3 is fixed at the center of a circle of an end face of the mounting plate 2 away from the channel steel 1. The energy absorbing steel sleeve 3 utilizes the shrinkage tube of the steel structure to absorb energy, and because the energy absorbing steel sleeve 3 is connected to the arc-shaped reverse cover 4 and the mounting plate 2 by bolts, it can be replaced separately after it is damaged in a collision. The end of the energy absorbing steel sleeve 3 away from the mounting plate 2 is fixed with an arc-shaped reverse cover 4 by bolts; a multi-stage energy absorption layer 5 is arranged in the arc-shaped reverse cover 4, and an aluminum skin 6 is arranged on the arc-shaped reverse cover 4.

The curvature of the arc-shaped reverse cover 4 is 0-10°, and the main function is to concentrate energy absorption. The outer dimensions can be nearly rectangular, and the impact surface is at the wide side of the rectangular (as shown in FIG. 10 ), to ensure the energy absorption integrity of the impact surface, and in order to ensure the protective effect, the size of the arc-shaped reverse cover 4 is larger than the size of the overall base (i.e., the mounting plate 2). The curvature and size of the arc-shaped reverse cover 4 are not fixed, and are designed according to the actual energy absorption requirements, and can also be adjusted in special environments. A number of ear plates 401 hinged to the elastic energy absorption structure 7 are fixed on the outer arc surface of the arc-shaped reverse cover 4, and a reinforcing rib plate 402 is fixed on the outer surface of the arc-shaped reverse cover 4 along the upper edge of the arc-shaped reverse cover 4. The ear plates 401 and the reinforcing rib plates 402 are arranged in a circular shape and equidistantly on the outer arc surface of the arc-shaped reverse cover 4. The reinforcing rib plates 402 further strengthen the structural strength of the arc-shaped reverse cover 4.

A connecting plate 403 fixedly connected to the energy absorbing steel sleeve 3 by bolts is fixed on the outer arc surface of the arc-shaped reverse cover 4. The energy absorbing steel sleeve 3 is a metal bellows, and one end of the energy absorbing steel sleeve 3 away from the connecting plate 403 is fixedly connected to the mounting plate 2 by bolts.

The multi-level energy absorption layer 5 is composed of a primary energy absorption layer 501, a secondary energy absorption layer 502, a tertiary energy absorption layer 503, and a fourth energy absorption layer 504. The primary energy absorption layer 501, the secondary energy absorption layer 502, the tertiary energy absorption layer 503, and the fourth energy absorption layer 504 are arranged from soft to hard. The primary energy absorption layer 501 is composed of a 10mm thick energy absorption rubber and a 50mm thick aluminum honeycomb plate with a crush value of 2Mpa. The secondary energy absorption layer 502 is composed of an aluminum honeycomb plate with a crush value of 2-5Mpa. The tertiary energy absorption layer 503 is composed of an aluminum honeycomb plate with a crush value of 5-8Mpa. The four-level energy absorbing layer 504 is composed of aluminum honeycomb plates with a crush value of 8-11Mpa, and the thickness of the aluminum honeycomb plates with different crush values constituting the secondary energy absorbing layer 502, the tertiary energy absorbing layer 503, and the fourth energy absorbing layer 504 is 200mm. The thicker energy absorbing layer is filled mainly to make up for the gaps caused by the curvature and improve the energy absorption effect, so as to protect the rear base and accessories from greater damage. Energy-absorbing materials with different crush values can absorb energy according to different collision intensities and make full use of the crush space to absorb energy, so as to ensure the absorption effect of the impact force generated by the collision.

In addition, in order to ensure the integrity and stability of the multi-level energy absorption layer 5 structure, the multi-level energy absorption layer 5 is wrapped with a silicone rubber wrapping layer 8 (3 mm thick) on the outside, as shown in Figure 11, so that the energy absorption layers of different levels form a whole, and the connection between the adjacent two aluminum honeycomb panels in the first energy absorption layer 501, the second energy absorption layer 502, the third energy absorption layer 503, and the fourth energy absorption layer 504 is bonded into one through the aluminum plate adhesive layer 9, ensuring the overall structural stability of the energy absorption layer, and the impact during collision can be transmitted to different levels, ensuring the collision energy absorption effect.

The aluminum skin 6 covers the open end of the arc-shaped reverse cover 4, and the thickness of the aluminum skin 6 is 0.5mm-1mm. The entire appearance is an integral whole, wrapped with a thin aluminum skin, and uniformly painted in warning yellow.

Embodiment 2: Based on the specific embodiment 1, the difference of this embodiment is that:

As shown in Figures 1, 3, 8 and 9, a plurality of elastic energy absorbing structures 7 are hinged on the outer arc surface of the arc-shaped reverse cover 4, and one end of the elastic energy absorbing structure 7 away from the arc-shaped reverse cover 4 is fixedly connected to the mounting plate 2. The elastic energy absorbing structure 7 includes a pressure relief pipe 701 fixedly connected to the mounting plate 2, one end of the pressure relief pipe 701 is equipped with a pressure relief valve 702, and the other end of the pressure relief pipe 701 is penetrated by a push rod 703, and one end of the push rod 703 located outside the pressure relief pipe 701 is hinged with a connecting rod 704 hinged with the mounting plate 2; one end of the push rod 703 located inside the pressure relief pipe 701 is equipped with a spring 705 that cooperates with the inner cavity of the pressure relief pipe 701, and one end of the spring 705 away from the push rod 703 is provided with a piston 706 that cooperates with the inner cavity of the pressure relief pipe 701, and the cavity in the pressure relief pipe 701 and between the piston 706 and the pressure relief valve 702 is filled with a pressure relief liquid 707, which can be water or lubricating oil. When the arc-shaped reverse cover 4 is displaced due to the collision (at this time, the energy-absorbing steel sleeve 3 has undergone energy-absorbing collapse deformation), the force of the collision is transmitted to the pressure relief pipe 701 through the connecting rod 704 and the push rod 703 as the arc-shaped reverse cover 4 is displaced. The push rod 703 contracts and squeezes the spring 705 into the pressure relief pipe 701 under the push of the connecting rod 704. Since the other end of the spring 705 directly acts on the pressure relief liquid 707 through the piston 706 (when the impact force and speed are large, the pressure relief liquid 707 is equivalent to a hard wall), the spring 705 is compressed. Deformation, the force during the collision is converted into the elastic potential energy of the spring 705. The force during the collision is absorbed by multiple springs 705, and then the force is gradually transmitted to the pressure relief liquid 707 through the spring 705. The pressure of the pressure relief liquid 707 in the pressure relief pipe 701 is increased by squeezing the pressure relief liquid 707. When the pressure reaches the threshold of the pressure relief valve 702, the pressure relief valve 702 opens to discharge the pressure relief liquid 707 to release the force during the collision, which can fully absorb the force during the collision and reduce the secondary damage to the vehicle or equipment caused by the rebound of the impact.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims (8)

1. A multi-stage energy absorption protection device for a stalled vehicle collision, comprising a channel steel (1) and a mounting plate (2) fixed on the channel steel (1), characterized in that: An energy-absorbing steel sleeve (3) is fixed at the center of a circle of one end surface of the mounting plate (2) away from the channel steel (1), and an arc-shaped reverse cover (4) is fixed to the end of the energy-absorbing steel sleeve (3) away from the mounting plate (2) by bolts; A multi-stage energy absorbing layer (5) is arranged inside the arc-shaped reverse cover (4), and an aluminum skin (6) is arranged on the arc-shaped reverse cover (4); A plurality of elastic energy absorbing structures (7) are hingedly connected on the outer arc surface of the arc-shaped reverse cover (4); one end of the elastic energy absorbing structure (7) away from the arc-shaped reverse cover (4) is fixedly connected to the mounting plate (2); The elastic energy absorption structure (7) comprises a pressure relief pipe (701) fixedly connected to the mounting plate (2); a pressure relief valve (702) is installed at one end of the pressure relief pipe (701); a push rod (703) runs through the other end of the pressure relief pipe (701); and one end of the push rod (703) located outside the pressure relief pipe (701) is hingedly connected to a connecting rod (704) hingedly connected to the mounting plate (2); A spring (705) that cooperates with the inner cavity of the pressure relief pipe (701) is installed at one end of the push rod (703) located inside the pressure relief pipe (701), and a piston (706) that cooperates with the inner cavity of the pressure relief pipe (701) is arranged at one end of the spring (705) away from the push rod (703). The cavity in the pressure relief pipe (701) and located between the piston (706) and the pressure relief valve (702) is filled with pressure relief liquid (707). 2. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 1, characterized in that the multi-stage energy absorption layer (5) is composed of a primary energy absorption layer (501), a secondary energy absorption layer (502), a tertiary energy absorption layer (503), and a fourth energy absorption layer (504), and the primary energy absorption layer (501), the secondary energy absorption layer (502), the tertiary energy absorption layer (503), and the fourth energy absorption layer (504) are arranged from soft to hard. 3. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 2, characterized in that the primary energy absorption layer (501) is composed of energy absorption rubber with a thickness of 10 mm and an aluminum honeycomb plate with a thickness of 50 mm and a crush value of 2 MPa, the secondary energy absorption layer (502) is composed of an aluminum honeycomb plate with a crush value of 2-5 MPa, the tertiary energy absorption layer (503) is composed of an aluminum honeycomb plate with a crush value of 5-8 MPa, and the quaternary energy absorption layer (504) is composed of an aluminum honeycomb plate with a crush value of 8-11 MPa. 4. The multi-stage energy absorption protection device for stalled vehicle collision according to claim 3 is characterized in that the thickness of the aluminum honeycomb plates with different crushing values constituting the secondary energy absorption layer (502), the tertiary energy absorption layer (503), and the quaternary energy absorption layer (504) are all 200 mm. 5. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 1, characterized in that the curvature of the arc-shaped reverse cover (4) is 0-10°, a plurality of ear plates (401) hinged to the elastic energy absorption structure (7) are fixed on the outer arc surface of the arc-shaped reverse cover (4), and a reinforcing rib plate (402) is fixed on the outer surface of the arc-shaped reverse cover (4) along the upper edge of the arc-shaped reverse cover (4), and the ear plates (401) and the reinforcing rib plates (402) are arranged in a circular shape and equidistantly on the outer arc surface of the arc-shaped reverse cover (4). 6. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 1, characterized in that a connecting plate (403) fixedly connected to the energy absorbing steel sleeve (3) by bolts is fixed on the outer arc surface of the arc-shaped reverse cover (4), the energy absorbing steel sleeve (3) is a metal bellows, and one end of the energy absorbing steel sleeve (3) away from the connecting plate (403) is fixedly connected to the mounting plate (2) by bolts. 7. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 1, characterized in that the aluminum skin (6) covers the open end of the arc-shaped reverse cover (4), and the thickness of the aluminum skin (6) is 0.5 mm-1 mm. 8. A multi-stage energy absorption protection device for a stalled vehicle collision according to claim 1, characterized in that a surface of the mounting plate (2) connected to the channel steel (1) is fixed with a mounting groove matching the channel steel (1), and the channel steel (1) is fixedly connected to the mounting plate (2) by bolts.