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Hanging beam for aluminum alloy body of railway vehicle

A technology for aluminum alloy car bodies and rail vehicles, applied in the field of hanging beam structures and aluminum alloy car body hanging beam structures, can solve the problems of large weld stress and small weld seam area, and achieve weld stress reduction, Increased weld area and high rigidity

Active Publication Date: 2014-03-12
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this structure has improved the overall strength and rigidity of the hanging beam to a certain extent, there are also the defects that the welding seam area between the beam, the longitudinal beam and the side beam of the underframe is small and the welding seam stress is large. This application is aimed at the existing Improvements made to some hanging beam structures

Method used

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  • Hanging beam for aluminum alloy body of railway vehicle
  • Hanging beam for aluminum alloy body of railway vehicle
  • Hanging beam for aluminum alloy body of railway vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and figure 2 As shown, a rail vehicle aluminum alloy car body hanging beam is used to hang the traction transformer located under the car, and the hanging beam is welded to the underframe side beam 6 of the car body.

[0038] The hanging beam is a frame structure, which is formed by welding at least two parallel beams 1 and at least two parallel longitudinal beams 2, and the frame structure is generally rectangular. The definitions of the above-mentioned longitudinal beam 2 and cross beam 1 are divided according to the longitudinal or transverse direction of the vehicle body during installation. In order to reduce the weight of the entire hanging beam, meet the lightweight requirements of high-speed rail vehicles, and at the same time meet the overall bearing capacity of the hanging beam, both the beam 1 and the longitudinal beam 2 are made of aluminum alloy hollow profile structure.

[0039] Such as figure 1 and figure 2 As shown, in this embodim...

Embodiment 2

[0050] Such as Figure 6 As shown, the longitudinal beam 2 adopts a hollow beam whose section is double-mouthed and combined with a chute, and the chute 5 is located at the edge bottom of one side of the longitudinal beam 2 . The longitudinal beam 2 no longer needs to set up the hanging hole 4 in addition, the chute 5 itself is the hanging hole, and a plurality of bolts slide in the chute 5, and are fastened in proper positions to fix the traction transformer. The hanging form of the longitudinal beam 2 is simple, which is beneficial to the assembly of the transformer.

Embodiment 3

[0052] Such as Figure 7 As shown, the longitudinal beam 2 adopts a hollow beam whose cross-section is a combination of a double mouth shape and a chute, and the chute 5 is located at the center of the bottom edge of one of the mouth shapes. The longitudinal beam 2 no longer needs to set up the hanging hole 4 in addition, the chute 5 itself is the hanging hole, and a plurality of bolts slide in the chute 5, and are fastened in proper positions to fix the traction transformer. Same as the second embodiment, the hanging form of the longitudinal beam 2 is simple, which is beneficial to the assembly of the transformer.

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Abstract

The invention relates to a hanging beam for an aluminum alloy body of a railway vehicle. A frame structure is formed by connecting at least two parallel transverse beams and at least two parallel longitudinal beams in a welded mode, wherein the two ends of each longitudinal beam are connected to the inner sides of the transverse beams at the two ends in a welded mode, and the outer side faces of the longitudinal beams and the end faces of the transverse beams are located in the same plane. Due to the adoption of the frame structure which is formed in a welded connection mode, the overall rigidity and the overall mechanical strength of the hanging beam are high; because the two end faces of each transverse beam and the outer side faces of the longitudinal faces are all connected with under frame boundary beams in a welded mode to form an integrated connection structure, the weld joint area is greatly enlarged, namely, the bearing area is enlarged, weld stress of the weld joint area can be obviously reduced and can be reduced by about 45 MPa compared with the prior art, and accordingly the fatigue life of the hanging beam can be greatly prolonged.

Description

technical field [0001] The invention relates to a hanging beam structure used for hanging a traction transformer in a high-speed rail vehicle, in particular to the hanging beam structure of an aluminum alloy vehicle body, and belongs to the field of mechanical manufacturing. Background technique [0002] At present, the speed of rail vehicles put into use in China has reached more than 300 kilometers per hour. When the vehicle is running at a speed of more than 300 kilometers per hour, the force of the traction transformer suspension beam is more complicated. For performance indicators such as the structural strength of the traction transformer suspension beam The requirements are also getting higher and higher. [0003] The strength of the suspension beam of the current high-speed rail vehicle must meet the European standard-EN12663:2010, and there should be sufficient safety margin. As a main load-bearing part of the car body structure, the suspension beam of the traction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F1/08
Inventor 孙现亮孙维光郑伟卢衍祥李兵田爱琴丁叁叁周建乐龚明马云双
Owner CRRC QINGDAO SIFANG CO LTD