Rolling mill arch hoisting method

Abstract

The invention discloses a rolling mill stand hoisting method, relates to the technical field of rolling mill stand installation, and provides a hoisting method capable of easily hoisting a rolling mill stand. The method comprises the following steps: A. preparing a rolling mill stand hoisting tool and two steel wire ropes, wherein the rolling mill stand hoisting tool includes a beam, two hooking shafts connected to the beam and two lifting plates placed on the beam; B. connecting the two hooking shafts with two lifting devices respectively; C, winding two wire ropes around the stand hoisting tool and connecting the wire ropes with the rolling mill stand; D, hoisting the mill stand, and removing the rolling mill stand from a transport vehicle; E, removing the steel wire ropes, and sleevingthe two lifting plates respectively to the top trunnions on both sides of the mill stand; F, operating the lifting devices to slowly lift and move the stand hoisting tool, so that the rolling mill stand rotates centering on the bottom to an upright state; and then hoisting the rolling mill stand to an installation position and lowering the rolling mill stand; and G, moving the lifting devices along the length of the beam to depart the lifting plate leaves from the trunnions of the stand.

Description

technical field [0001] The invention relates to the technical field of rolling mill archway installation, in particular to a rolling mill archway hoisting method. Background technique [0002] The hoisting weight of the crane in the rolling mill workshop is generally determined by the heaviest supporting roll set to be hoisted, that is, it only needs to be able to lift the supporting roll set. The weight of the rolling mill archway is generally about twice that of the back-up roll system, so a single crane cannot hoist the rolling mill archway. [0003] Chinese patent No. 200920302158.9 discloses a hoisting tool for a rolling mill archway and discloses a method for hoisting a rolling mill archway using the tool. The tool forms a rectangular frame through two main beams and the lifting lugs on both sides of the main beam. Lifting structures are arranged on the lifting lugs on both sides; the rolling mill arch passes through the gap between the two main beams, and the beam pa...

AI Technical Summary

Problems solved by technology

But this rolling mill arch hoisting tool has the following disadvantages: 1. The rolling mill arch hoisting tool is assembled from multiple parts; It is inconvenient to assemble and use the archway hoisting tools and remove the hoisting tools for the rolling mill archway after use

[0005] In addition, the above-mentioned patent only discloses how to utilize tools to make the rolling mill archway change from an inclined state to an upright state

After the rolling mill arch is transported to the site, it needs to be unloaded from the transport vehicle. This patent does not disclose how to unload the rolling mill arch from the transport vehicle

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