Method for replacing disabled bolt weight anchor at speed improving runway switch crossing sleeper of railway

A replacement method and bolt technology, applied in the directions of roads, tracks, buildings, etc., can solve problems such as being unsuitable for maintenance of skylights, unable to take out bolt casings, etc., and achieve the effect of long cooling time of thermal energy, short operation time and high operation quality.

Active Publication Date: 2008-01-23
广州红祥机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these methods can take out the entire bolt casing in a short period of time, such as the opposite side drilling anchor method, anchor drill anchor met...

Method used

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  • Method for replacing disabled bolt weight anchor at speed improving runway switch crossing sleeper of railway

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Experimental program
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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with an embodiment.

[0030] The tool that the present invention adopts is the supporting use of mold 1 and four-spline shaft, as shown in Figure 1 and Figure 2. The corners of No. 1 four-spline shaft 2 are triangular, and the purpose is to reduce the downstroke resistance of the four-spline shaft during fusing and pressing. The edges and corners of the No. 2 four-spline shaft 3 are square.

[0031] The embodiment of the replacement method of the present invention is divided into nine steps:

[0032] In the first step, burn the front end 1 to 8 cm of No. 1 four-spline shaft 2 to 240° C. with oxyacetylene.

[0033] In the second step, align the red-hot No. 1 four-spline shaft 2 with the bolt bushing for melting and pressing. At the same time, a pressure of 70kgf is applied above the mold 1, so that the No. 1 four-spline shaft 2 is quickly melted and pressed to the bottom end of the bolt sleeve. In...

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Abstract

A way for replacing the failed bolts and weighing anchors for switch ties of railroad switches for increasing speed of railways is provided. The invention employs the operation principle of melting plastic by thermal energy, and completes the replacing by such procedures as burning red the four spline shafts, fusing and pressing bolt sleeves, rotating out the bolt sleeves, etc. The invention has the advantages of the saved labor source, the easy operation, the short operation time, the compact operation tools, etc., and is applicable for the weighing anchors of other switch ties of the same type.

Description

technical field [0001] The invention belongs to a construction method for replacing railway turnouts, in particular to a method for replacing failed bolt casings of turnout sleepers. Background technique [0002] At present, railway transportation has achieved the sixth major speed increase, and the speed of most trunk lines has reached more than 200 kilometers per hour. As an important part of railway transportation equipment, turnouts play an important role in the heavy-duty and high-speed railway lines. [0003] Most of the switch sleepers in the prior art adopt concrete structure, and the plastic sleeves are pre-buried in the switch sleepers, and screwed into the plastic sleeves with the switch sleeper bolts, and the switch backing plate and the rubber pad under the board are firmly connected with the switch sleeper. With such a solid structure, it is very difficult to repair the plastic sleeve after it fails. Since the outer surface of the plastic pipe is provided wit...

Claims

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Application Information

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IPC IPC(8): E01B7/00
Inventor 杨红瑞
Owner 广州红祥机械科技有限公司
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