Railroad flat car underframe and method of making the same

A flat car and railway technology, which is applied in the direction of railway car body parts, underframes, freight cars, etc., can solve the problems of fatigue life, stress concentration, beam deformation failure and other problems at the lead welding place, so as to improve fatigue life, improve bearing capacity, and avoid The effect of deformation failure

A flat car and railway technology, which is applied in the direction of railway car body parts, underframes, freight cars, etc., can solve the problems of fatigue life, stress concentration, beam deformation failure and other problems at the lead welding place, so as to improve fatigue life, improve bearing capacity, and avoid The effect of deformation failure

CN103552564BActive Publication Date: 2016-08-17CRRC SHENYANG CO LTD
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  • Railroad flat car underframe and method of making the same
  • Railroad flat car underframe and method of making the same
  • Railroad flat car underframe and method of making the same

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[0019] The "longitudinal" in the present invention refers to the direction in which the railway flat car extends, that is, the straight direction where the railway flat car runs, and "horizontal" refers to the direction perpendicular to the "longitudinal" in the horizontal plane.

[0020] figure 2 It is the top view of the embodiment of the railway flat car underframe of the present invention; please refer to figure 2 , the present embodiment provides a railway flat car underframe, comprising: a horizontally extending crossbeam 31, and a middle beam 32 extending longitudinally through the crossbeam 31, the crossbeam 31 and the middle beam 32 respectively include a top crossbeam cover plate 310 and a top middle beam cover plate 320, the beam cover plate 310 includes sub-cover plates 311 located on both sides of the center sill cover plate 320, the sub-cover plates 311 are welded and fixed with the center sill cover plate 320, and the front and rear sides of the beam cover pla...

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Abstract

The invention provides a railway flat car underframe and a manufacturing method thereof. The railway flat car underframe comprises: a transversely extending crossbeam, and a middle beam longitudinally penetrating through the crossbeam, the crossbeam and the middle beam respectively include a top crossbeam cover plate and a top middle beam cover plate, and the crossbeam cover plate includes a The sub-cover plates on both sides of the center sill cover plate, the sub-cover plates are welded and fixed to the center sill cover plate, and the front and rear sides of the cross beam cover plate form a longitudinal extension of the center sill cover plate The curved transition surface of the smooth joint of the sides. The railway flat car underframe of the present invention optimizes the stress state at the joint between the cross beam and the middle beam, effectively avoids stress concentration, improves the fatigue life of the weld, and can further prevent part of the stress value from rising to the yield of the cross beam limit, thereby improving the bearing capacity of the beam and avoiding the deformation and failure of the beam.

Description

technical field [0001] The invention relates to railway vehicle manufacturing technology, in particular to a railway flat car underframe and a manufacturing method thereof. Background technique [0002] Railway flat cars are generally used to transport containers and other goods, and their underframes, as the load-bearing matrix, have high requirements for structural strength. [0003] Figure 1A It is a top view of the underframe of a railway flat car in the prior art, Figure 1B for Figure 1A main view of ; such as Figure 1A and Figure 1B As shown, the underframe is generally formed by welded laterally extending end beams, cross beams 2, longitudinally extending center beams 1, and side beams. The two side beams are symmetrically arranged on both sides of the center beam 1. At the front and rear ends of the side beams, the cross beam 2 is located in the middle of the middle beam 1 and fixed by welding with the middle of the middle beam 1 . The center beam 1 is a long...

Claims

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Application Information

Patent Timeline
17 Aug 2016
Publication
CN103552564B
IPC
B61D3/00; B61D3/20; B61F1/02
Inventors
万生太; 马国辉