JP4804511B2 - Collision collapse structure of railway vehicle structure - Google Patents

Description

  The present invention relates to a member that absorbs energy by plastic deformation, and relates to a collision collapse structure of a railway vehicle structure suitable for a railway vehicle.

In a transportation device represented by a railway vehicle, a road vehicle, etc., an unexpected collision may occur although it is within a range of normal use. In order to protect the passengers / passengers boarding the transportation equipment against such an unexpected collision, as in Patent Document 1, the living space in which the passengers / passengers are boarding has a strong structure, The concept of absorbing energy in a collapsed space where passengers and passengers do not board (hereinafter referred to as collision mitigation design) is being incorporated into the design of transportation equipment.
Moreover, the energy absorption characteristic of the material generally used for the purpose of energy absorption is shown by the nonpatent literature 1, for example.
JP-A-7-186951 (USP 5715757) Andreas Gmur et. al. , ON THE DESIGN REQUIREMENTS FOR ALUMINIUM CRASH MODULES: ENERGY ABSORPTION, GLOBAL STABILITY AND STATION STRENGTH, Proc. of the 3rd Int. Sym. Passive Safety of Rail Vehicles

  To sum up, in the collision collapse structure of the railway vehicle structure that converts the energy generated at the time of the collision into the deformation energy of the member in order to protect passengers and passengers when the transportation equipment represented by the railway vehicle collides, it is as small as possible There is a need to provide a collision collapse structure of a railway vehicle structure that can absorb a lot of energy by volume, has a small difference between the maximum load at the initial stage of collision and the load generated at the time of stable collapse, and does not greatly depend on the direction of the collision.

  An object of the present invention is to provide such a collision collapse structure of a railway vehicle structure.

The object is a collision collapse structure of a railway vehicle structure comprising a collision survival space located at a center part in the longitudinal direction of the vehicle body, and a collision collapse space located at both ends of the collision survival space in the longitudinal direction of the vehicle body, A collision collapsing member disposed on the vehicle end side of the underframe that forms the collision survival space, the collision collapsing members are respectively disposed at both side positions in the vehicle body width direction of the collision collapsing space, and The two collapsible collapsing members are arranged at a distance corresponding to the connector installation part, and the two collapsible collapsing members are configured by a hollow shape member arranged so that the pushing direction coincides with the longitudinal direction of the vehicle body The hollow shape member is formed by integrally molding two substantially parallel face plates and ribs connecting the both face plates, and has a hollow structure composed of the two face plates and ribs. A cylinder that forms its entire circumference Is formed, each collision collapse member, two of the hollow profile by arranging the longitudinal direction of the car body to match the extrusion direction, is constructed by connecting across the partition plate, wherein each collision disintegrating member This partition plate has a shape corresponding to the cylindrical cross section of the hollow shape member, and the partition plates of the collision collapsing members are independently installed.

  A first embodiment when the present invention is applied to a railway vehicle structure will be described with reference to FIGS.

  The railcar structure 1 includes a wife structure that forms surfaces that close both ends with respect to the longitudinal direction of the vehicle body 2, a side structure that forms left and right surfaces with respect to the longitudinal direction of the vehicle body 3, a roof structure 4 that forms a roof, and a floor. It is comprised from the frame 5 which forms a surface. The side structure 3 has windows and openings for entrances and exits. Side beams 6 are provided at the lowermost part of the side structure and at both ends of the underframe in the vehicle width direction.

  The railway vehicle structure 1 is configured by joining a plurality of hollow shapes for all or part thereof. The hollow profile is a profile extruded using a light alloy (for example, an aluminum alloy), and the extrusion direction (that is, the longitudinal direction) and the longitudinal direction of the vehicle body are matched. That is, the hollow shape members are arranged so that the width direction thereof is aligned with the circumferential direction of the vehicle body. Thereafter, these hollow shapes are welded to form the railway vehicle structure 1.

  The railway vehicle structure 1 having such a basic structure includes a collision survival space 10 that protects the lives of passengers and passengers at the time of a collision, and a collision collapse space 20 that converts energy generated at the time of collision into plastic deformation energy of a member and absorbs it. Composed. The collision survival space 10 is installed at the center of the railway vehicle body 1 in the longitudinal direction of the vehicle body. The collision collapse space 20 exists at both ends of the railway vehicle structure 1 in the longitudinal direction of the vehicle body, and is arranged so as to sandwich the collision survival space 10.

  Next, the collision collapse structure 100 of the collision collapse space 20 will be described with reference to FIGS. In FIG. 2, the figure which looked at the collision collapse space 20 which has a driver's cab from the side surface is shown. The structure of the collision collapse space 20 is positioned on the front side (vehicle end side) of the substantially rectangular mounting frame 110 that is substantially equal to the shape of the end portion of the railway vehicle structure 1 in order to be fixed to the railway vehicle structure 1. A plurality of vertical columns 120 and 130, a horizontal bone 140 that couples the vertical columns 120 and 130 to the mounting frame 110, a floor 150, an anti-climater 160 that collides first, a collision collapsing member 200, and the like are mainly configured. . The collision collapsing structure 100 is connected to the collision survival space 10 by a mounting frame 110 to constitute the railway vehicle structure 1.

  Here, in order to facilitate the following description, the mounting frame 110 side is the rear end, and the end portion (anti-climmer 160 side) as the railcar on the opposite side is the front end. An edge connecting the front end and the rear end is called a side surface.

  The vertical column 120 connects the upper end of the mounting frame 110 and the substantial end of the floor 150 on the front end side. The vertical column 130 connects a substantial side surface of the floor 150 between the mounting frame 110 and the vertical column 120. The vertical column 120 has a larger cross-sectional area than the vertical column 130. The horizontal bone 140 connects the attachment frame 110, the vertical column 130, and the vertical column 120 at a position between the roof and the frame with respect to the height direction. These members are connected by welding.

  The collision collapsing member 200 is located at the lower part of the floor 150, and the height direction position thereof is substantially equal to or lower than the height of the frame 5 constituting the collision survival space. The length of the collision collapsing member 200 in the longitudinal direction of the vehicle body is from the mounting frame 110 to the other end. The collision collapsing member 200 is connected to the mounting frame 110 at the end on the railcar structure side, and is connected to the anti-climmer 160 at the other end. The collision collapsing member 200 is installed with its upper and lower surfaces horizontal, and a partition plate 210 is provided at the center in the longitudinal direction.

  The collision collapse member 200 includes a front (front end) collision collapse member 200F and a rear (rear end) collision collapse member 200R. The cross-sectional shape of the front collision collapsing member 200F is the same as the cross-sectional shape of the rear collision collapsing member 200R.

  The collision collapsing member 200 and the mounting frame 110 are connected using a cross beam 190 provided in the vehicle body width direction on the lowermost side of the mounting frame 110. The collision collapsing member 200 and the floor 150 are connected by a support beam 170.

  In FIG. 3, the collision collapsing member 200 is installed at both ends in the width direction of the railway vehicle structure 1 (near the side structure 3) with the center in the vehicle body width direction symmetrical. That is, there are a total of two collision collapsing members 200 symmetrically with respect to the vehicle body width direction per collision collapsing space 20.

  In FIG. 4, the collision collapsing members 200 are installed on both sides in the width direction of the vehicle body with the coupler 70 interposed therebetween. Moreover, the longitudinal cross-sectional shape of the collision collapsing member 200 is a hollow quadrangular shape, and is a cylindrical shape along the longitudinal direction of the vehicle body in the quadrangular shape, and each surface of the quadrangular shape is a hollow shape material. The lateral beam 190 connecting the collision collapsing member 200 to the mounting frame 110 has a length from the side beam 6 to the middle beam 180 in the width direction of the vehicle body. Further, the cross beam 190 has a height that includes the collision collapsing member 200 in the vehicle body height direction.

  Next, the collision collapsing member 200 will be described with reference to FIGS. In FIG. 5, the collision collapsing member 200F or 200R can be configured by cutting the collision collapsing member 200 shown in this figure at a right angle to the length direction (extrusion direction of the hollow profile) according to the use situation. it can. The collision collapsing member 200 has a cylindrical structure in which four surfaces are constituted by a hollow shape member 220 made of a light alloy (for example, an aluminum alloy). The hollow shape member 220 has an extrusion direction directed to a traveling direction (longitudinal direction) of the vehicle. That is, the collision direction and the extrusion direction of the hollow shape member 220 are matched.

  In FIG. 6, the hollow shape member 220 is composed of two substantially parallel face plates 221a and 221b and ribs 222 that connect the both face plates. A portion where the face plate 221 and the rib 222 are connected is referred to as a node 223. The rib 222 is inclined with respect to the face plates 221a and 221b. For this reason, the space surrounded by the face plates 221a and 221b and the rib 222 has a shape similar to a triangle with respect to the pushing direction. That is, the ribs 222, 222... Are connected to the face plates 221a, 221b in a truss shape. The face plates 221a and 221b constitute a plane.

  The material of the hollow shape member 220 of the collision collapsing member 200 can be formed by extrusion of the illustrated hollow shape member 220. As an example, a so-called ternary aluminum alloy to which Al, Mg, Si, or the like is added can be given. In order to make it easy to absorb impact energy after extrusion, the material of the hollow shape member 220 is refined in metal structure or subjected to heat treatment equivalent to annealing.

  The rib 222 may be orthogonal to the face plates 221a and 221b. According to this, since extrudability improves, a thin plate-shaped hollow shape material can be used. Moreover, since the behavior with respect to buckling is further simplified, it becomes easier to obtain a bellows-shaped deformation mode.

  In FIG. 7, the part which connects the hollow shape members 220 and 220 which comprise the collision collapse member 200 is demonstrated. The hollow shape member 220 a and the hollow shape member 220 b constituting the collision collapsing member 200 are connected at the corners of the collision collapsing member 200. In the hollow shape member 220a, the end portion connected to the hollow shape member 220b is connected by a rib 222c at the end portion. There are no ribs at the end of the hollow profile 220b. Therefore, the end portions of the hollow shape face plates 221c and 221d are butted against the end portions of the hollow shape face plates 221a and 221b and are welded. That is, the corners of the collision collapsing member 200 are closed spaces by the ribs 222c and 222d and the face plate 221c. The end of the face plate 221a is a node 223c. The end of the face plate 221b is a node 223a.

  The hollow shape members 220a and 220b are connected to each other at the nodes 223a and 223b by welding. Welding is performed from the inside of the collision collapsing member 200 at the node 223a. On the other hand, in the node 223c, it is performed from the outside of the collision collapsing member 200.

  In such a configuration, when the vehicle collides with another vehicle or an obstacle, the collision collapsing member 200 is plastically deformed in the longitudinal direction and absorbs the collision energy. The partition plate 210 between the collision collapsing member 200F and the collision collapsing member 200R is for preventing the collision collapsing member 200 from buckling into two as a whole due to the collision energy. Small and locally buckled. The partition plate 210 allows the hollow shape member 220 constituting the collision collapsing member 200 to be continuously deformed in a bellows shape without being deformed in a “ku” shape, and can absorb a lot of impact energy.

  The embodiment shown in FIG. 8 will be described. The end of the face plate 221b of the hollow shape member 220a extends to such an extent that it does not contact the hollow shape member 220b. With such a configuration, it is possible to reduce labor for processing the hollow shape member 220a.

  The embodiment shown in FIG. 9 will be described. The end of the face plate 221a of the hollow shape member 220a extends first from the intersection with the face plate 221c of the hollow shape member 220b. The extended face plate 221a can facilitate the mounting of components.

  The embodiment shown in FIG. 10 will be described. The end portion of the face plate 221b of the hollow shape member 220a is an intersection with the face plate 221c of the hollow shape member 220b, and a connection plate 224 that connects the end portions of the face plate 221a and the face plate 221b is provided. The connection plate 224 is orthogonal to the face plates 221a and 221b. With such a configuration, it is possible to reduce labor for processing the hollow shape member 220a.

  Note that the connection plate 224 may be manufactured by an extrusion process integrated with the face plates 221a and 221b. In this case, the extrusion process may be performed so as to provide a weld groove in the hollow shape member 220 at the weld location.

  The embodiment of FIG. 11 will be described. A rib 222f along the face plate 221c of the hollow shape member 220b is integrally provided at the end of the hollow shape member 220a. The end portion of the face plate 221c overlaps the outer surface of the connection portion between the rib 222f and the face plate 221b, and a welding groove is provided at the connection portion. Further, in order to facilitate positioning of the hollow shape member 220a and the hollow shape member 220b, a protrusion 225 serving as a backing is provided on the outer surface side of the face plate 221b.

  The embodiment of FIG. 12 will be described. This is an L-shaped hollow member 220a, 220b, 220c, 220d in which two hollow members orthogonal to each other are integrated, and this is butt welded at the welded portion 226.

  In this configuration, the number of molds required for extrusion becomes one, and the number of molds can be reduced. Moreover, since it joins in a plane part, compared with joining in a corner | angular part, joining becomes easy.

  The embodiment of FIG. 13 will be described. This is obtained by providing hollow shape members 220 a and 220 b that are divided into two at the center in the width direction of the collision collapsing member 200, and welding them at the welded portion 226. This further reduces the number of welds.

  The embodiment of FIGS. 14 and 15 will be described. In the above embodiments, since welding between the hollow members has to be performed on both surfaces of the hollow member, it is difficult to weld the collision collapsing member 200 in the cylinder. In the embodiment of FIGS. 14 and 15, two surfaces can be welded from the outside of the collision collapsing member 200. The detailed structure of the weld 226 of FIG. 14 is shown in FIG. 15 and will be described below.

  The hollow shape member of the collision collapsing member 200 is composed of four L-shaped hollow shapes as shown in FIG. In the structure of the welded portion 226, the inner face plate 221a of one hollow shape member of the cylindrical portion is abutted against the inner face plate 221b of the other adjacent hollow shape member. The outer face plates 221c and 221d are in positions retreated from the face plates 221a and 221b. The rib 222b is connected to the end of the face plate 221c. There is an adjacent rib 222a in the vicinity of the connecting portion between the face plate 221c and the rib 222b. The outer surface side of the face plate 221c at this node is a recess. A connecting member 227 is stacked on each concave portion of the adjacent hollow member and welded to the face plate.

  The welding procedure will be described. First, the face plates 221a and 221b are abutted, and the abutting portion of the joining portion 228a is welded from the upper side (the face plate 221c side). Next, the connecting material 227 is overlapped, and the joining portions 228b and 228c at the respective end portions of the connecting material 227 are welded to the nodes of the face plates 221c and 221d and the ribs 222b and 222c from the upper side (face plates 221c and 221d side).

  According to this, since the hollow profile can be welded from the outside, the welding operation can be easily performed. Moreover, since it joins in a plane part, compared with joining in a corner | angular part, joining becomes easy. Furthermore, since the joining of the collision collapsing member is completed only from the outside, it can be joined with good workability even when the collision collapsing member is small.

  In addition, it may replace with welding and may join by the friction stir welding method. In this case, the downward force of the friction stir welding generated when the face plate 221d and the connecting member 227 are joined is supported by the ribs 222c and 222d.

  The embodiment of FIG. 16 will be described. The hollow shape member 220 has a cross-sectional shape as if it were a circle.

  In such a configuration, since the hollow members are arranged in a circle, it is possible to always have equal rigidity with respect to loads acting from all directions. Therefore, the robustness is improved.

  The embodiment of FIG. 17 will be described. In addition, in this figure, in order to make an understanding of invention easy, the hollow shape material is simplified and described. In the present embodiment, the collision collapsing member 200 is formed of a hollow material. The hollow shape member 220 has a triangular cross-sectional shape.

  According to this configuration, since the hollow shape members are arranged in a triangle, it is possible to avoid interference with other devices.

  In the above embodiments, other members are not provided in the space surrounded by the hollow shape member, but a member that absorbs energy may be disposed. For example, foamed aluminum, a honeycomb panel, or the like is disposed. According to this, even if the collision collapsing member is made small, large energy can be absorbed.

  The embodiment of FIG. 18 will be described. In addition, in this figure, in order to make an understanding of invention easy, the hollow shape material is simplified and described. The hollow shape member 220 has a cross-sectional shape as if it were a cross shape.

  In such a configuration, since the hollow members are arranged at right angles, the out-of-plane bending rigidity is high, so that it is difficult to buckle. Further, in the embodiment up to FIG. 15, since there is a space surrounded by the hollow shape material, it is difficult to save the space. However, according to this embodiment, the space can be omitted, and the space is small. More energy can be absorbed.

It is a perspective view of a vehicle structure. It is the side view which looked at the vehicle structure of FIG. 1 from the side structure side. It is a top view of the front-end | tip part of FIG. It is AA sectional drawing of FIG. It is a perspective sectional view of a collision member. It is sectional drawing of the principal part of a hollow shape material. It is sectional drawing of the corner | angular part of a collision member. FIG. 8 is a diagram corresponding to FIG. 7 of another embodiment. FIG. 8 is a diagram corresponding to FIG. 7 of another embodiment. FIG. 8 is a diagram corresponding to FIG. 7 of another embodiment. FIG. 8 is a diagram corresponding to FIG. 7 of another embodiment. It is sectional drawing of the collision member of another Example. It is sectional drawing of the collision member of another Example. It is sectional drawing of the collision member of another Example. It is sectional drawing of the connection part of the hollow shape material of FIG. 14, and a hollow shape material. It is sectional drawing of the collision member of another Example. It is sectional drawing of the collision member of another Example. It is sectional drawing of the collision member of another Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Railway vehicle structure, 2 ... Wife structure, 3 ... Side structure, 4 ... Roof structure, 5 ... Underframe, 6 ... Side beam, 10 ... Collision survival space, 20 ... Collision collapse space, 100 ... Collision collapse structure, 110 ... mounting frame, 120, 130 ... vertical column, 140 ... horizontal bone, 150 ... floor, 160 ... anti-climate, 170 ... support beam, 180 ... middle beam, 190 ... cross beam, 200 ... collision collapsing member, 210 ... partition, 220 ... hollow shape material, 221 ... face plate, 222 ... rib, 223 ... node, 224 ... connection plate, 225 ... projection, 226 ... weld, 227 ... connection material, 228 ... junction.

Claims (2)

A collision collapse structure of a railway vehicle structure comprising a collision survival space located at a center part in the longitudinal direction of the vehicle body and a collision collapse space located at both ends of the collision survival space in the longitudinal direction of the vehicle body,
A collision collapsing member disposed on the vehicle end side of the underframe that forms the collision survival space;
The collision collapsing members are respectively disposed at both sides of the collision collapsing space in the vehicle body width direction, and the two collision collapsing members are disposed at a distance corresponding to a connector installation portion,
The two collapsible collapsing members are made of a hollow material arranged so that the pushing direction thereof coincides with the longitudinal direction of the vehicle body,
The hollow shape member is formed by integrally molding two substantially parallel face plates and a rib connecting the both face plates, and a hollow structure composed of the two face plates and the ribs has an entire circumference. It is formed into a configured cylinder,
Each of the collision collapsing members is configured by connecting the two hollow members arranged in the longitudinal direction of the vehicle body so as to coincide with the extrusion direction , with a partition plate interposed therebetween,
The partition plate of each collision collapsing member has a shape corresponding to the cylindrical cross section of the hollow shape member, and the partition plate of each collision collapsing member is installed independently,
The collapsing and collapsing structure of a railway vehicle structure. In the collision collapse structure of the railway vehicle structure according to claim 1,
Each of the collision collapsing members is installed via an attachment frame that supports the load received by each of the collision collapsing members at the time of the collision with respect to the frame that forms the collision survival space.
The collapsing and collapsing structure of a railway vehicle structure.

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