Method for repairing large gear ring of embedded shield main bearing

A repair method, the technology of the large ring gear, which is applied in the field of shield machines, can solve the problems of complex repair process, affecting the safety performance of the large ring gear, and high repair cost, so as to achieve reliable process, improve repair effect and safety performance, and high connection strength Effect

Inactive Publication Date: 2021-12-03
CHINA RAILWEY ENG SERVICE CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problems in the prior art that the repair process is complicated, the repair cost is high, and stress concentration is likely to affect the safety performance of the large ring gear, the present invention provides a method for repairing the large ring gear of the mosaic shield main bearing, and its purpose is to simplify the repair process , reduce the risk of scrapping, and avoid the influence of stress concentration on the performance of the large ring gear

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  • Method for repairing large gear ring of embedded shield main bearing

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...

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Abstract

The invention discloses a method for repairing a large gear ring of an embedded shield main bearing, and belongs to the technical field of shield tunneling machines. The problems that in the prior art, the repairing process is complex, the repairing cost is high, stress concentration is prone to being generated, and the safety performance of the large gear ring is affected are solved. The method comprises the following steps: 1, analyzing a large gear ring material; 2, analyzing and designing a tooth shape; 3, mounting grooves for mounting the embedded teeth are formed in the large gear ring; 4, carrying out embedded tooth machining and heat treatment according to the tooth shape, size and chemical components; 5, mounting the embedded teeth and the mounting grooves in an interference fit manner; and 6, forming threaded holes in the connecting positions of the embedded teeth and the large gear ring, locating one part of the hole wall of each threaded hole on the corresponding embedded tooth, locating the other part of the hole wall of each threaded hole on the corresponding mounting groove, mounting screws through the threaded holes, and finally carrying out cold welding treatment on gaps between the embedded teeth and the large gear ring. The repairing method is simple, the phenomenon of stress concentration is avoided, and the repairing effect and safety performance of the large gear ring are improved.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a method for repairing a large ring gear of a main bearing of a mosaic shield machine. Background technique [0002] With the continuous increase of subway construction projects, the subway lines are becoming more and more dense, and there are many subway line crossings, and the geology of subway construction is becoming more and more complex. During the construction process, the torque and other loads borne by the main bearing are getting closer Due to the rated load of the design of the large ring gear of the bearing, microcracks often occur on the surface of the tooth profile of the large ring gear, which affects its performance and safety. [0003] In the prior art, for the tooth profile with local microcracks or partial damage of the large ring gear, the usual repair method is to replace or cut off the damaged tooth profile, and then carry out welding and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 孙楠楠李志刚夏庆发苏叶茂熊永丰梁小龙谭小波
Owner CHINA RAILWEY ENG SERVICE CO LTD
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