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Dowel pin pullout device for nuclear power plant mechanical equipment

A technology for mechanical equipment and locating pins, which is applied in the field of locating pin pullout devices for nuclear power plant mechanical equipment, can solve the problems of insufficient operating space for ram pin pullers, easy-to-damage locating pin threads, and easily-damaged locating pin threads, etc., to achieve Wide range of use, fast installation and operation, and easy to carry

Inactive Publication Date: 2016-07-20
CLP CHINA NUCLEAR POWER ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Screw and washer removal method: If the screw material is not selected properly, it is easy to damage the positioning pin thread; the washer needs to be added repeatedly, and the process is more cumbersome
[0004] 2) How to remove the ram pin puller: When the maintenance space is narrow, the operating space of the ram pin puller is insufficient; when the positioning pin is corroded and the tightening force is too large, the pulling force of the shorter pin puller is not enough
[0005] 3) Crowbar removal method: it is easy to damage the positioning pin thread, and it is easy to slip and hurt people

Method used

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  • Dowel pin pullout device for nuclear power plant mechanical equipment
  • Dowel pin pullout device for nuclear power plant mechanical equipment
  • Dowel pin pullout device for nuclear power plant mechanical equipment

Examples

Experimental program
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Effect test

Embodiment

[0024] Such as figure 1 As shown, a device for pulling out positioning pins of mechanical equipment in nuclear power plants includes an inverted U-shaped bracket 1, a screw rod 2, a nut 3 and a joint 4, and the crossbeam of the inverted U-shaped bracket 1 is provided with a The lead screw 2 is connected to one end of the joint 4 after passing through the nut 3 and the beam of the inverted U-shaped bracket 1 in turn, and the other end of the joint 4 is connected to the positioning pin 6 to be pulled out.

[0025] A spacer 5 is provided between the inverted U-shaped bracket 1 and the nut 3 . The spacer 5 is slidably connected with the inverted U-shaped bracket, and is provided with a threaded hole for threading through the screw. One end of the joint 4 is provided with an internally threaded hole 41 connected with the screw rod, and the other end is provided with an externally threaded column 43 or an internally threaded hole 42 connected with the positioning pin to be pulled o...

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PUM

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Abstract

The invention relates to a dowel pin pullout device for nuclear power plant mechanical equipment. The device comprises an inverted U-shaped bracket, a lead screw, a nut and a joint; a hole for penetrating through the lead screw is formed in a cross beam of the inverted U-shaped bracket; the lead screw is connected with one end of the joint after penetrating through the nut and the cross beam of the inverted U-shaped bracket in sequence; and the other end of the joint is connected with a dowel pin to be pulled out. Compared with the prior art, the device has such advantages as wide application range, safety, reliability, low manufacturing cost and convenience and speediness in maintenance.

Description

technical field [0001] The invention relates to a device for pulling out positioning pins, in particular to a device for pulling out positioning pins for mechanical equipment in nuclear power plants. Background technique [0002] The connection parts of many mechanical equipment in nuclear power plants (such as steam turbine high-pressure cylinder shaft seal, bearing box, split-type water pump, etc.) There are certain limitations and risks in the positioning pin extraction method. [0003] 1) Screw and washer removal method: If the screw material is not selected properly, it is easy to damage the positioning pin thread; the washer needs to be added repeatedly, and the process is cumbersome. [0004] 2) The removal method of the ram pin puller: When the maintenance space is narrow, the operating space of the ram pin puller is insufficient; the positioning pin is corroded, and when the tightening force is too large, the pulling force of the shorter pin puller is not enough. ...

Claims

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Application Information

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IPC IPC(8): B25B27/02
Inventor 邓伟王东宇
Owner CLP CHINA NUCLEAR POWER ENG TECH