Bogie auxiliary framework of railway wagon and production technology thereof

A technology for railway freight cars and production processes, which is applied to bogies, railway car body parts, manufacturing tools, etc., can solve the problems of difficulty in guaranteeing casting and machining, large dimensions of sub-frames, and difficulty in overall manufacturing, and reduces mechanical The effect of processing difficulty, low processing production efficiency and high production cost

Inactive Publication Date: 2012-06-20
CRRC MEISHAN
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The sub-frame has a large size and complex spatial structure. The two ends are saddle-shaped and the middle is a lon

Method used

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  • Bogie auxiliary framework of railway wagon and production technology thereof
  • Bogie auxiliary framework of railway wagon and production technology thereof
  • Bogie auxiliary framework of railway wagon and production technology thereof

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Embodiment Construction

[0047] The present invention is further described below in conjunction with specific embodiment, and specific embodiment is the further description of the principle of the present invention, does not limit the present invention in any way, and the identical or similar technology of the present invention all does not exceed the scope of protection of the present invention.

[0048] combine Figure 1 to Figure 11 .

[0049] The sub-frame of the railway freight car bogie and its production process of the present invention adopt segmental casting, separate processing, then assembly and welding to form, and finally process key characteristic dimensions, which can effectively ensure the quality requirements of each part of the sub-frame and smoothly realize the manufacturing process of the sub-frame .

[0050] Such as Figure 10 as shown, Figure 10 It is the cloud map of the stress amplitude of the U-shaped sub-frame structure, and the test of the tension rod force ± 42KN is use...

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Abstract

The invention discloses a bogie auxiliary framework of a railway wagon and production technology thereof. The bogie auxiliary framework is formed by split structures including a left saddle, a right saddle and an arm for connecting the left saddle and the right saddle. The left saddle, the right saddle and the arm are connected into a whole through welding, and welding connection positions are respectively located at a left saddle connection rod straight line section and a right saddle connection rod straight line section. The production technology comprises the following steps of respectively performing casting processing on the left saddle, the right saddle and the arm; performing welding groove processing on the left saddle, the right saddle and the arm; assembling the left saddle and the arm, and assembling the right saddle and the arm; performing positioned welding; performing layered welding; polishing welding joints, performing flaw detection and removing stress; integrally processing a saddle surface, drilling holes and reaming holes; and pressing a sleeve. The bogie auxiliary framework of the railway wagon and the production technology of the bogie auxiliary framework utilize combination of the split structures, spin-off structures are scientific, a combination welding method can effectively guarantee quality requirements of all portions of the auxiliary framework and reduce casting manufacture difficulty, machining difficulty and machining cost, and the quality of the butt welding technology of the saddles and the arm of the auxiliary framework is excellent.

Description

technical field [0001] The invention belongs to the field of mechanical design and manufacture, in particular to the field of design and manufacture of railway freight car components, in particular to a railway freight car bogie sub-frame structure and a production process thereof. Background technique [0002] The sub-frame is the main part of the sub-frame bogie of railway freight cars, and it is the main technical feature of this type of bogie that is different from other types of freight car bogies, and it is also the most important part that reflects the performance characteristics of this type of bogie. The sub-frame has large dimensions and complex spatial structure. Both ends are saddle-shaped and the middle is long-arm cavity-shaped. The overall manufacturing is too difficult to meet the requirements of casting and machining. [0003] The bogie sub-frame is a stressed component, and its structural strength is related to the safety of the whole vehicle. The split met...

Claims

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Application Information

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IPC IPC(8): B61F5/52B23P15/00B23K9/16
Inventor 王汉青刘成勇杨鸣张庆良方南京张学云姚毅邹建美方保宁
Owner CRRC MEISHAN
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