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Method for replacing lower roller tables of pinch roller

A pinch roller and lower roller table technology, applied in the direction of metal rolling, metal rolling stands, manufacturing tools, etc., can solve the problems affecting the normal production of the production line, long downtime, inconvenient to replace the roller table, etc. The effect of normal production, reduced downtime, reduced labor

Active Publication Date: 2014-01-29
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the position of the pinch roller parts, it is very inconvenient to replace the lower roller table. It is necessary to disassemble the upper part of the pinch roller frame, then disassemble the lower roller table, and then replace the new roller table, assemble the pinch roller frame, and complete the maintenance The time can reach 12 hours, and the long downtime seriously affects the normal production of the production line

Method used

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  • Method for replacing lower roller tables of pinch roller
  • Method for replacing lower roller tables of pinch roller
  • Method for replacing lower roller tables of pinch roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as image 3 As shown, a method for replacing the pinch roller table is realized through the following steps to quickly and safely replace the first lower roller table 7, the second lower roller table 10, and the third lower roller table 12 of the pinch roller:

[0039] 1) Taking the second lower roller table 10 as an example, first extend the hydraulic cylinder 9 to the maximum position, lift the pinch roller frame 4 to the highest position, close the hydraulic pipeline valve, remove the connecting shaft 21, Remove the bolts 23 of the fixed feet of the drive side bearing housing 13 and the operating side bearing housing 15 of the roller table 10. If it cannot be removed, use a gas cutting gun to remove the bolts 23;

[0040]2) Weld the first connecting rod 17 to the bearing seat 15 on the operating side, weld the second connecting rod 18 to the coupling 14 of the bearing seat 13 on the transmission side, and the first connecting rod 17 and the second connecting rod...

Embodiment 2

[0048] Such as Figure 4 As shown, a method for replacing the pinch roller table is realized through the following steps to quickly and safely replace the first lower roller table 7, the second lower roller table 10, and the third lower roller table 12 of the pinch roller:

[0049] 1) Taking the second lower roller table 10 as an example, first extend the hydraulic cylinder 9 to the maximum position, lift the pinch roller frame 4 to the highest position, close the hydraulic pipeline valve, remove the connecting shaft 21, Remove the bolts 23 of the fixed feet of the drive side bearing housing 13 and the operating side bearing housing 15 of the roller table 10. If it cannot be removed, use a gas cutting gun to remove the bolts 23;

[0050] 2) Extend a third connecting rod 19 whose length is four times the length of the second lower roller table 10 into the lower part of the pinch roller frame 4, close to the operation side bearing seat 15 and the transmission side bearing seat 1...

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Abstract

The invention discloses a method for replacing lower roller tables of a pinch roller. The method comprises the following steps of (1) extending a hydraulic cylinder farthest to enable a pinch roller frame to be lifted to the highest position, closing a hydraulic pipeline valve, and detaching bolts among a connection shaft, the lower roller tables and a base; (2) utilizing a connection rod, a steel wire rope and a crane or utilizing the connection rod, the steel wire rope, a fixed sleeve and the crane to move an old lower roller table out of the placing position under the pinch roller frame; (3) utilizing the connection rod, the steel wire rope and the crane or utilizing the connection rod, the steel wire rope, the fixed sleeve and the crane to move a new lower roller table to the placing position under the pinch roller frame, and fixing the new lower roller table and the base through the bolts; (4) repeating the step (2) and the step (3) to replace all the old lower pinch rollers with the new lower pinch rollers, and enabling the hydraulic cylinder to contract to let the pinch roller frame drop to the normal position. By means of the method, the lower roller tables of the pinch roller can be replaced quickly, overhaul time is saved, and efficiency is improved.

Description

technical field [0001] The invention relates to the mechanical field, and more specifically relates to a method for replacing the lower roller table of pinch rollers. Background technique [0002] In hot rolling enterprises, the strip steel in the production line needs to be transported by roller table, and the pinch roller, as a kind of control and transmission equipment, has become an indispensable part. During production, after the wear of the pinch roller table or the jamming of the bearing seat occurs, it is necessary to replace the new roller table to ensure production. However, due to the influence of the position of the pinch roller parts, it is very inconvenient to replace the lower roller table. It is necessary to disassemble the upper part of the pinch roller frame, then disassemble the lower roller table, and then replace the new roller table, assemble the pinch roller frame, and complete the maintenance The time can reach 12 hours, and the longer shutdown time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B31/08
Inventor 栾兆华陈传盛王春芹刘东华庞廷庆刘纯玉汪定态杨鹏袁林魏颖颖苏全明张华伟
Owner LAIWU IRON & STEEL GRP