Hoisting method of heavy rolling mill arch in confined space

Abstract

The invention relates to the field of installation of heavy duty rolling mills, in particular to a method for hoisting a heavy duty rolling mill housing in a limited space. The method is characterizedby comprising the steps of unloading the heavy duty rolling mill housing and installing a lifting appliance; sliding the heavy duty rolling mill housing to the appropriate position; assembling a hydraulic portal crane; horizontally hoisting the heavy duty rolling mill housing; turning over and hoisting the heavy duty rolling mill housing; hoisting the heavy duty rolling mill housing in a standingstate in place; demounting the portal crane and the lifting appliance. According to the method for hoisting the heavy duty rolling mill housing in the limited space, the hydraulic portal crane and travelling crane hoisting are utilized, a dedicated lifting appliance supporting beam is adopted for mating to firmly support the lower end of the a housing cross beam, and it is guaranteed that the horizontal hoisting process and the upright overturning process of the heavy dusty rolling mill are safe and reliable.

Description

technical field [0001] The invention relates to the field of installation of heavy rolling mills, in particular to a hoisting method for a heavy rolling mill arch in a limited space. Background technique [0002] With the country's increasingly strict requirements on energy consumption and environmental protection, adjusting structure, reducing costs, eliminating backward products, improving quality, and developing high-end products are becoming the goals pursued by domestic iron and steel enterprises. At present, most steel rolling production lines have problems such as low dimensional accuracy, unstable performance, and difficulty in thin-gauge production. Therefore, the technological transformation and upgrading of the rolling mill production line is a wise choice. [0003] The rolling mill stand, also known as the rolling mill archway, is the component with the largest size and weight in the working stand of the rolling mill. The large hot-rolled strip mill archway is ...

AI Technical Summary

Problems solved by technology

The large hot-rolled strip mill archway is large in size and heavy in weight; therefore, in the reconstruction project of the rolling mill production line, due to the limited space of the original rolling mill workshop and the large size and overweight of the heavy-duty rolling mill archway, the heavy-duty rolling mill archway needs to be turned and slipped several times after unloading. When reaching the hoisting position, the hoisting capacity and hoisting height of the original rolling mill workshop cannot meet the hoisting requirements of the heavy rolling mill archway

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