Multi-sequence load protection device for metro vehicle

Abstract

The utility model discloses a metro vehicle multi-order load protection device, which relates to the technical field of load protection, and comprises a box body filled with foamed aluminum used for absorbing energy generated during collision; the hollow hexahedron is fixedly installed on the outer wall of the box body, the interior of the hollow hexahedron is filled with two porous honeycomb layers, the interior of an inner cavity of the hollow hexahedron is slidably connected with two sliding blocks which slide relatively, the two sliding blocks are located between the porous honeycomb layers, and the two porous honeycomb layers can absorb energy generated during collision when being extruded and deformed by the sliding blocks; according to the multi-sequence load protection device for the metro vehicle, energy generated during collision can be absorbed under buffering of the cosine beam, when external impact kinetic energy reaches a certain threshold value, the first stable state of the cosine beam can be switched to the second stable state, locking of low-speed collision energy is achieved, and the safety of the metro vehicle is improved. And therefore, energy generated during collision can be absorbed for the first time.

Description

Technical Field

[0001] The utility model relates to the technical field of load protection, in particular to a multi-sequence load protection device for a subway vehicle. Background Art

[0002] With the rapid development of rail transit and other fields in my country, while facilitating people's travel, its operation safety issues have received more and more attention. Subways and other rail transit vehicles usually have a large passenger capacity and a high running speed. Once a collision occurs, it often causes large casualties and property losses. Accidents such as train rear-end collisions that have occurred in recent years fully demonstrate that even if a series of active protection measures such as signal control, dispatching management and procedural management are taken, train collision accidents cannot be completely avoided.

[0003] When a subway is running at high speed, once an uncertain collision impact caused by both human and natural factors occurs, it will not only cause serious harm to the death and injury of passengers, but also have a great negative impact on urban development. At present, the existing subways usually install an anti-collision beam on the subway. The anti-collision beam is a device used to reduce the absorption of collision energy when the train is hit. It consists of a main beam, an energy absorption box and a mounting plate used to connect the main body of the train. The main beam and the energy absorption box can effectively absorb the collision energy when the train collides at a low speed, and minimize the damage to the longitudinal beam of the vehicle body caused by the impact force. In this way, it plays a protective role for the train. However, the energy generated by the collision is generally transferred in a single direction, with a large collision capacity, while the general anti-collision beam cannot absorb energy well and still has a certain risk, making the passengers still vulnerable to greater injuries. Utility Model Content

[0004] The utility model aims to provide a subway vehicle multi-sequence load protection device to solve the deficiencies in the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a box body, the interior of which is filled with foam aluminum, and the foam aluminum is used to absorb the energy generated during the collision; a hollow hexahedron, which is fixedly installed on the outer wall of the box body and filled with two porous honeycomb layers, and two relatively sliding sliders are slidably connected in the inner cavity of the hollow hexahedron, and the two sliders are located between the porous honeycomb layers, and the two porous honeycomb layers will absorb the energy generated during the collision when they are squeezed and deformed by the sliders; a fixed panel, one side of which faces the hollow hexahedron is hinged with two connecting rods, and the ends of the two connecting rods away from the fixed panel are hinged to the two sliders one by one, and the other side of the fixed panel is provided with a plurality of cosine beams distributed in a rectangular array, and each cosine beam is fixedly connected to a force-bearing panel.

[0006] Preferably, one end of the connecting rod is connected to the corresponding sliding block via a first hinge shaft, and the other end of the connecting rod is connected to the fixed panel via a second hinge shaft.

[0007] Preferably, the cosine beam includes a cross and four elastic rods, the cross is fixedly mounted on a fixed panel, and one end of the elastic rod is mounted on an extended end of the cross via a vertical connecting rod, a support rod is fixedly mounted on the force-bearing panel, and the other ends of the four elastic rods are fixedly mounted on the support rod.

[0008] Preferably, the four elastic rods are arranged obliquely and distributed in a ring array, and a U-shape is formed between two opposite elastic rods and each connecting rod.

[0009] Preferably, a through groove for avoiding the connecting rod is provided on the side of the hollow hexahedron facing the fixed panel.

[0010] Preferably, the end face of the porous honeycomb layer in a hexagonal cross section is in abutment with the slider, and the cross section of one end of the slider facing the porous honeycomb layer is in a hexagonal shape.

[0011] In the above technical scheme, the utility model provides a subway vehicle multi-sequence load protection device, in which the impact force first impacts the load-bearing panel, and then, under the buffering of the cosine beam, the energy generated during the collision can be absorbed. When the external impact kinetic energy reaches a certain threshold, the first steady state of the cosine beam will switch to the second steady state, realizing the locking of the low-speed collision energy, and then the first energy absorption of the energy generated during the collision can be realized; then the impact kinetic energy can drive the two sliders to slide relative to each other through the connecting rod assembly, and then the two sliders can squeeze the porous honeycomb layer, so that the energy generated during the collision can be absorbed for the second time; when the impact kinetic energy of the porous honeycomb layer reaches a certain threshold, the foam aluminum arranged in the box body can absorb the energy generated during the collision for the third time, and the whole device can achieve better protection effect through three energy absorptions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0014] Figure 2 A schematic top view of the overall structure provided by an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the structure of a cosine beam provided in an embodiment of the utility model;

[0016] Figure 4 A schematic structural diagram of a connecting rod assembly provided in an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1. Box body; 2. Foam aluminum; 3. Hollow hexahedron; 4. Porous honeycomb layer; 5. Slider; 6. Fixed panel; 7. Cosine beam; 8. Load-bearing panel; 9. Connecting rod; 10. First hinge axis; 11. Second hinge axis; 12. Cross; 13. Elastic rod; 14. Support rod; 15. Connecting rod. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1-4 The utility model provides a multi-sequence load protection device for a subway vehicle, comprising: a box body 1, a hollow hexahedron 3 and a fixed panel 6, wherein the box body 1 is filled with foamed aluminum 2, and the foamed aluminum 2 is used to absorb the energy generated during a collision; the hollow hexahedron 3 is fixedly mounted on the outer wall of the box body 1, and is filled with two porous honeycomb layers 4, and two relatively sliding sliders 5 are slidably connected in the inner cavity of the hollow hexahedron 3, and the two sliders 5 are located between the porous honeycomb layers 4, and the two porous honeycomb layers 4 absorb the energy generated during a collision when they are squeezed and deformed by the sliders 5; the fixed panel 6 has two connecting rods 9 hinged on one side facing the hollow hexahedron 3, and the ends of the two connecting rods 9 away from the fixed panel 6 are hinged to the two sliders 5 in a one-to-one correspondence, and a plurality of cosine beams 7 distributed in a rectangular array are arranged on the other side of the fixed panel 6, and a force-bearing panel 8 is fixedly connected to each cosine beam 7.

[0021] Among them, one end of the connecting rod 9 is connected to the corresponding slider 5 through a first hinge shaft 10, and the other end of the connecting rod 9 is connected to the fixed panel 6 through a second hinge shaft 11; when the fixed panel 6 is subjected to impact kinetic energy, it will move as a whole toward the box body 1, and then, with the cooperation of the first hinge shaft 10, the second hinge shaft 11 and the connecting rod 9, the two sliders 5 can be driven to slide in the inner cavity of the hollow hexahedron 3, so that the slider 5 can squeeze the porous honeycomb layer 4, and the porous honeycomb layer 4 will absorb the energy generated by the collision during deformation.

[0022] Among them, the cosine beam 7 includes a cross 12 and four elastic rods 13. The cross 12 is fixedly mounted on the fixed panel 6, and one end of the elastic rod 13 is installed on the extended end of the cross 12 via a vertical connecting rod 15. A support rod 14 is fixedly mounted on the load-bearing panel 8, and the other ends of the four elastic rods 13 are fixedly mounted on the support rod 14. When the cosine beam 7 is buffering, the load-bearing panel 8 will transfer the external load impact force to the four inclined elastic rods 13 through the support rod 14. When the impact kinetic energy reaches a certain threshold, the impact kinetic energy on each elastic rod 13 is transferred to the cross 12 through the connecting rod 15, and finally to the fixed panel 6.

[0023] The four elastic rods 13 are arranged obliquely and distributed in a ring array, and a U-shape is formed between two opposite elastic rods 13 and each connecting rod 15 .

[0024] A through groove for avoiding the connecting rod 9 is formed on one side of the hollow hexahedron 3 facing the fixed panel 6 .

[0025] The cross-sectional hexagonal end face of the porous honeycomb layer 4 abuts against the slider 5, that is, the cross-sectional hexagonal end face of the porous honeycomb layer 4 is vertically arranged to the slider 5, and the cross section of the end of the slider 5 facing the porous honeycomb layer 4 is hexagonal.

[0026] When the subway body is impacted by an external load, the impact force first impacts the stress-bearing panel 8, and then the energy generated by the collision can be absorbed under the buffering of the cosine beam 7. When the external impact kinetic energy reaches a certain threshold, the first steady state of the cosine beam 7 will switch to the second steady state, realizing the locking of the low-speed collision energy, and then the first energy absorption of the energy generated by the collision can be realized; specifically, when the cosine beam 7 is buffering, the stress-bearing panel 8 will transfer the external load impact force to the four inclined elastic rods 13 through the support rod 14. When the impact kinetic energy reaches a certain threshold, the impact kinetic energy on each elastic rod 13 is transferred to the cross 12 through the connecting rod 15, and finally to the fixed panel 6; then the impact kinetic energy can drive the two sliders through the connecting rod 9 assembly 5 can slide relative to each other, so that the two sliders 5 can squeeze the porous honeycomb layer 4, so that the energy generated by the collision can be absorbed for the second time; specifically, when the fixed panel 6 is subjected to the impact kinetic energy, it will move as a whole toward the box body 1, and then with the cooperation of the first hinge shaft 10, the second hinge shaft 11 and the connecting rod 9, the two sliders 5 can be driven to slide in the inner cavity of the hollow hexahedron 3, so that the sliders 5 can squeeze the porous honeycomb layer 4, and the porous honeycomb layer 4 can absorb the energy generated by the collision during deformation; when the impact kinetic energy received by the porous honeycomb layer 4 reaches a certain threshold, the foam aluminum 2 arranged in the box body 1 can absorb the energy generated by the collision for the third time, and the whole device can achieve better protection effect through three times of energy absorption.

[0027] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that 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 multi-sequence load protection device for subway vehicles, characterized in that: include: A box body (1) is filled with foamed aluminum (2) inside, and the foamed aluminum (2) is used to absorb energy generated during collision; A hollow hexahedron (3) is fixedly mounted on the outer wall of the box body (1), and is filled with two porous honeycomb layers (4). Two relatively sliding blocks (5) are slidably connected in the inner cavity of the hollow hexahedron (3), and the two sliding blocks (5) are located between the porous honeycomb layers (4). When the two porous honeycomb layers (4) are squeezed and deformed by the sliding blocks (5), they absorb the energy generated by the collision. A fixed panel (6) has two connecting rods (9) hingedly connected on one side facing the hollow hexahedron (3), and the ends of the two connecting rods (9) away from the fixed panel (6) are hingedly connected to the two sliding blocks (5) in a one-to-one correspondence, and a plurality of cosine beams (7) distributed in a rectangular array are arranged on the other side of the fixed panel (6), and each cosine beam (7) is fixedly connected to a force-bearing panel (8).

2. A subway vehicle multi-sequence load protection device according to claim 1, characterized in that: One end of the connecting rod (9) is connected to the corresponding sliding block (5) via a first hinge shaft (10), and the other end of the connecting rod (9) is connected to the fixed panel (6) via a second hinge shaft (11).

3. The subway vehicle multi-sequence load protection device according to claim 1, characterized in that: The cosine beam (7) comprises a cross (12) and four elastic rods (13); the cross (12) is fixedly mounted on a fixed panel (6), and one end of the elastic rod (13) is mounted on an extended end of the cross (12) via a vertical connecting rod (15); a support rod (14) is fixedly mounted on the force-bearing panel (8), and the other ends of the four elastic rods (13) are fixedly mounted on the support rod (14).

4. A subway vehicle multi-sequence load protection device according to claim 3, characterized in that: The four elastic rods (13) are arranged obliquely and distributed in a ring array, and a U-shape is formed between two opposite elastic rods (13) and each connecting rod (15).

5. The subway vehicle multi-sequence load protection device according to claim 1, characterized in that: A through groove for avoiding the connecting rod (9) is provided on one side of the hollow hexahedron (3) facing the fixed panel (6).

6. The subway vehicle multi-sequence load protection device according to claim 1, characterized in that: The end face of the porous honeycomb layer (4) in a hexagonal cross section is in abutment with the slider (5), and the cross section of the end of the slider (5) facing the porous honeycomb layer (4) is in a hexagonal shape.

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