Steel rail damaged connector in-situ welding construction technology
A construction technology and rail technology, applied in the direction of track, track laying, track maintenance, etc., can solve the problem that it is difficult to accurately reflect the structural failure of the transformer, and achieve the effect of reducing material consumption, reducing processing time, and saving time
Active Publication Date: 2016-04-20
CHINA RAILWAY 11TH BUREAU GRP +1
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide an in-situ welding construction technology for rail defect joints to solve the problem that a single detection method is difficult to accurately reflect the structural fault of the transformer, and to improve the reliability of structural fault diagnosis of the transformer
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the specific implementation methods of the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] A rail defect joint in-situ welding construction process is characterized in that it includes the following steps:
[0032] Step 1: Query the rail temperature during welding and release of the original rail, the actual rail burning loss of the flash welder, calculate the elongation of the rail, check the condition of the welder, arrange loosening and unloading fasteners, rail bending, and pre-welding treatment of the rail and post-weld handlers;
[0033] Step 2: Periodically investigate the rail temperature. When the rail temperature is lower than the stress relief temperature, vertically saw off the rail defect ...
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The invention discloses a steel rail damaged connector in-situ welding construction technology. Damaged connectors are mainly processed according to the steps of making preparation for construction, sawing the connectors at low temperature, releasing a steel rail fastener, making the steel rail elongation meet requirements, bending a steel rail, aligning the correctors, thermally processing the connector after welding and finally locking the steel rail. The construction technology is applicable to processing damaged connectors of a newly-built line and an existing line steel rail. Processing time can be shortened, time is saved for intensive later-period welding construction of the steel rail, transporting and rail welding construction staff are reduced, and material consumption of the steel rail and connector welding is reduced. The number of the steel rail connectors is not increased, it is avoided that because the number of the connectors is increased, the risk of the damaged connectors is increased, and the later-period running and maintaining workload is not increased; raw materials of the steel rail are saved, and the damaged connectors can be processed in a more economical and efficient mode.
Description
technical field [0001] The invention belongs to the technical field of welding technology, and more specifically relates to an in-situ welding construction technology for rail defect joints. Background technique [0002] With the rapid development of my country's railway construction, especially after several domestic passenger dedicated lines have realized track seamlessness through advanced rail welding technology, by improving the smoothness and overall strength of the line, the driving conditions of the train have been greatly improved, ensuring that the train Maintain a good level of comfort at high speeds. The newly-built railway transports a certain length of long steel rails to the site by long-rail transport vehicles and lays the long rails at the same time. By welding the long steel rails into long rails of considerable length, a seamless line across intervals is formed. At present, the on-site rail welding methods mainly include mobile flash welding, thermite weld...
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Login to View More IPC IPC(8): E01B31/18
CPCE01B31/18
Inventor 周涛杨凌清
Owner CHINA RAILWAY 11TH BUREAU GRP