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Car structure

A vehicle frame and frame technology, which is applied in the direction of hopper cars, transport passenger cars, railway car bodies, etc., can solve the problems of increasing the quality of the frame, and achieve the effect of suppressing the concentration of deformation and the generation of high stress

Active Publication Date: 2008-07-16
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to prevent this situation, if the thickness of the panel of the hollow profile is thickened across the board, the mass of the frame will be greatly increased.

Method used

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Experimental program
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Effect test

Embodiment 1

[0022] based on Figure 1 ~ Figure 3 A first embodiment of the present invention will be described.

[0023] exist figure 1 In the illustrated embodiment, the rail vehicle frame 20 is composed of a top frame 1 forming the upper side, two side frames 2, 2 forming the sides, a platform frame 3 forming the lower side, and two end frames 4, 4 forming the end faces.

[0024] The top frame 1, the side frames 2, 2, the table frame 3, and the end frames 4, 4 are respectively constructed by joining (welding or friction stir welding) a plurality of extruded profiles.

[0025] The extruded profiles constituting the roof frame 1 , the side frames 2 , 2 , and the frame 3 are hollow profiles made of aluminum alloy, and the extrusion direction of the hollow profiles is the longitudinal direction of the rail vehicle frame 20 . The extruded profile constituting the end frames 4 , 4 is a ribbed single profile made of aluminum alloy, and the extrusion direction of the single profile is set to...

Embodiment 2

[0038] based on Figure 4 A second embodiment of the present invention will be described.

[0039] The second embodiment is composed of two independent members, that is, a first joint part 10A and a second joint part 10B. figure 2 The L-shaped metal piece 10 of the embodiment. exist Figure 4 In the embodiment of the present invention, the first joint portion 10A and the second joint portion 10B are plate-shaped, and it is not necessary to figure 2 As shown, the L-shaped metal fitting 10 is formed of a cut or extruded product, so it is possible to reduce material costs and reduce processing costs. As shown by the welding portion 15, the first joint part 10A and the second joint part 10B are butt jointed, and as shown in the figure, the cross section perpendicular to the opening edge is connected in an L-shape. Furthermore, plate 10B is welded to plate 10A, but could also be welded to panel 8 .

Embodiment 3

[0041] based on Figure 5 A third embodiment of the present invention will be described.

[0042] The third embodiment integrates the second engaging portion 10B in the second embodiment with the frame 7 . That is, the second engaging portion is provided as a protruding portion 7B protruding from the frame 7 toward the side frame 2 side. The first joint portion 10A and the second joint portion 7B are welded by the welding portion 15 and connected in an L-shape when viewed from a cross section perpendicular to the opening edge. According to a third embodiment, with figure 2 Compared with the first embodiment shown, the L-shaped metal fitting can be easily configured, and the joining work of the second joining portion 7B can be reduced.

[0043] In addition, in each of the above-described embodiments, welding of the plate members has been described, but friction stir welding may be used instead of welding. In addition, joining refers to welding or friction stir welding.

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PUM

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Abstract

A car structure is provided which has the required strength against vertical load and vibration while avoiding increase in weight of the structure. At an entrance (6) of the railroad car structure (20) in which a side structure (2) is formed by a hollow member, the side structure (2) and a frame (7) are coupled via an L-shaped fitting (10). The L-shaped fitting (10) consists of a first joint part (10a) which is in the form of a plate and couples a vehicle outer face plate (8) and a vehicle inner face plate (9) and a second joint part (10b) which is in the form of a plate and butt welds a part of the first joint part (10a) near the vehicle outer face plate (8) and the frame (7). Plate thickness of the second joint plate (10b) is larger than plate thickness of the vehicle outer face plate (8). As a result, the required strength against vertical load can be ensured without increasing the plate thickness of the vehicle outer face plate (8), in other words, with little increase in weight of the structure.

Description

technical field [0001] The present invention relates to a vehicle frame constituting a rail vehicle such as a railway vehicle or a monorail car, and more particularly to a vehicle frame formed by joining hollow sections made of aluminum alloy, for example. Background technique [0002] The vehicle frame is composed of a top frame constituting the upper face, two side frames constituting the side faces, a frame constituting the lower face, and two end frames constituting the end faces in the longitudinal direction. [0003] In recent years, for the main purpose of reducing the weight of rail vehicles and improving manufacturability, aluminum alloy hollow extruded profiles are used for the top frame, side frames, and frame, and aluminum alloy ribbed extruded profiles are used for the end frames. profiles. Such a body frame of a rail vehicle is shown in Patent Document 1, for example. [0004] In addition, the doorway provided on the side frame of the vehicle frame is formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D7/04
CPCB61D17/08B61D17/041B61D17/00B61D17/06B61D17/04
Inventor 中村英之宫本俊治用田敏彦川崎健
Owner HITACHI LTD