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Method for dismounting decollation bolt

A technology of bolts and screw holes, which is applied in the field of taking out broken threaded parts, can solve problems such as easily damaged screw holes, and achieve the effect of reducing the impact force

Inactive Publication Date: 2015-05-27
中船桂江造船有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for dismounting broken bolts, which can solve the problem that the screw holes on the original equipment are easily damaged in the existing method for removing dead bolts

Method used

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  • Method for dismounting decollation bolt

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0013] figure 1 Shown is a schematic diagram of the triangular scraper driven into the dead bolt in the method of removing the dead bolt. The removal steps of the dead bolt remaining in the screw hole of the equipment are as follows:

[0014] A. In the center of the broken bolt remaining in the screw hole, an inner through hole is drilled in the axial direction, and the diameter of the inner through hole is smaller than the thread root diameter of the broken bolt;

[0015] B. Prepare a triangular scraper. The outer diameter of the triangular scraper is larger than the diameter of the inner through hole and smaller than the diameter of the thread root of the broken bolt. The front end of the blade is tapered to the tip of the blade, and the end of the blade is a handle integrally formed with the blade. , the knife handle is a square cylinder, and the ou...

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Abstract

The invention discloses a method for dismounting a decollation bolt, and refers to the technical field of repairing. The method for dismounting the decollation bolt comprises the following steps: forming an inner through hole at the center of a fractured bolt remained in a screw hole along the axial direction, wherein the diameter of the inner through hole is less than that of the thread root part of the fractured bolt; stretching a blade point of a triangular scrapper to the inner through hole, and driving the triangular scrapper body into the fractured bolt along the axial direction of the inner through hole, so that the edge of the triangular scrapper is embedded in the fractured bolt, wherein the outside diameter of the triangular scrapper body is more than the diameter of the inner through hole and less than the diameter of the threaded root part of the fractured bolt; clamping a handle of the triangular scrapper by a spanner, wrenching the spanner according to the turning-out direction of the fractured bolt, and driving the fractured bolt to screw out of the screw hole in the course of wrenching the triangular scrapper by the spanner. Compared with the prior art, the method for dismounting the decollation bolt can take out the decollation bolt without the deformation of the screw hole.

Description

technical field [0001] The invention relates to the technical field of maintenance, in particular to a method for taking out broken thread parts. Background technique [0002] A bolt is a common threaded part. It consists of a head and a cylinder with external threads. It is usually used to fasten two parts with holes. The bolt connection is a detachable connection. In the process of machinery manufacturing, shipbuilding industry and mechanical equipment maintenance, the bolt heads of bolts are often broken, and some of the broken bolts remain on the equipment and cannot be removed. In this case, the following two methods are usually used to remove it: one method is to drill an inner through hole in the center of the broken bolt, the diameter of the inner through hole is 1~2 mm smaller than the small diameter of the broken bolt, and then use a spatula to remove the broken bolt. Shoveling out; Another method is to drill a counter-thread screw hole in the center of the broken...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P11/00
CPCB23P11/00
Inventor 覃广初
Owner 中船桂江造船有限公司
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