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Steel rail weld joint identification method and its special equipment

A technology for welding joints and special devices, applied in display devices, marking, printing, etc., can solve the problems of low utilization rate of welding production data and difficult historical records, and achieve the effect of simple structure, easy identification and unified management, and guaranteeing service life.

Active Publication Date: 2008-08-06
CHINA ACADEMY OF RAILWAY SCI CORP LTD +1
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The production records of each process of railway rail welding in my country are scattered and stored in the equipment of each process, or stored in the form of printed recording paper. The production records of the joint in each process are not integrated according to the joint identification number. View a certain joint Historical records are very difficult, and the utilization rate of welding production data is extremely low

Method used

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  • Steel rail weld joint identification method and its special equipment

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0024] The inventor has learned through theoretical analysis that the upper part of the rail waist (ie the neutral axis of the rail) is subjected to compressive stress and the lower part is subjected to tensile stress, and the stress at the rail waist is zero. It has been proved by experiments that the pit mark is set on the rail waist of the rail, specifically within 10mm of the rail waist on the side of the non-working surface of the rail, and the depth is in the range of 0.3-0.5mm. The pit mark will not only make the rail Fatigue cracks, fractures, reducing the service life of the rail, and can keep the pit marks for about 10 years, overcoming people's long-standing technical prejudices.

[0025] In order to ensure the traceability and unified management of quality, the pit marks are marked a...

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Abstract

The invention provides a method for identifying a rail welded splice and a special device thereof, relating to the identification and the identification device. The method comprises the following steps that: the web of rail is provided with a drop pit mark, that is, the drop pit mark is arranged on the web of rail on the side of non operation within ten millimeters and has a depth of 0.3 to 0.5 millimeters. The device comprises a housing, wherein, one side of the outside of the housing is provided with a pinhead which extrudes the surface of the housing and is connected to a marker, the inner part of the housing is provided with a drive mechanism for driving the pinhead to move, the top of the housing is provided with at least one positioner parallel with the pinhead, the positioner is clung to the position on the top surface of the rail for determining the mark, a fixer with magnetic force is arranged below the positioner corresponding to the web of rail, the drive mechanism is controlled by a remote computer. The method of the invention can keep the mark for about 10 years under the precondition that both the operation security and the service life of the rail are guaranteed; in addition, the method brings convenience to the identification unified management. The device has the advantages of simple structure and easy operation.

Description

technical field [0001] The invention relates to a marking method and a marking device, in particular to a marking method and a special device for rail welded joints. Background technique [0002] With the rapid development of my country's railway seamless line technology, more and more attention has been paid to the quality of rail welding. Ensuring the quality of rail welding is not only conducive to the safety of railway transportation, but also conducive to improving the speed of trains. Among them, welding methods, welding equipment, welding parameters, operation process, operators and other factors will have an impact on welding quality. In order to ensure the welding quality, the control of the welding production process is particularly important. It is necessary to be able to trace the quality in order to find out the key factors causing quality problems, and finally correct the problems to promote the normal operation of the quality system. The premise of realizing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F7/00B41J3/413B41J2/31
Inventor 高文会李力宋宏图丁韦刘艳红张震邹立顺王贵山
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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