Automatic unhooking and hooking device for roll change of horizontal mill and unhooking and hooking method

Abstract

The invention discloses an automatic unhooking and hooking device for roll change of a horizontal mill. The automatic unhooking and hooking device comprises a roll change carriage, a carriage hook head, a positioning oscillating bar and a roll hook head, wherein the roll hook head is arranged on one end of a roll of the mill, one end of the carriage hook head is hinged with the front end of the roll change carriage, the other end of the carriage hook head is bent downwards and is provided with a carriage hook head part with a downward opening, a limiting mechanism which is used for limiting the carriage hook head part to rotate downwards to be lower than a horizontal plane is arranged between one end of the carriage hook head and the roll change carriage, the upper end of the positioning oscillating bar is hinged with the middle of one end, which is bent downwards, of the carriage hook head, a roll hook head part with an upward opening is arranged on the roll hook head, and a limitinginclined plane and a positioning groove are formed in the roll hook head part. According to the automatic unhooking and hooking device, the automatic hooking and unhooking can be realized, compared with a manual operating mode of the carriage hook head of an existing horizontal mill during roll change, the manual operation is reduced, human input is released, potential safety hazards are eliminated, and the roll change time is shortened. The invention further discloses an automatic unhooking and hooking method for roll change of the horizontal mill.

Description

technical field [0001] The invention belongs to the technical field of roll changing in a hot-rolled horizontal rolling mill, and in particular relates to a device for automatically decoupling a roll in a horizontal rolling mill and a decoupling and hooking method. Background technique [0002] In the hot continuous rolling production line, the roll change method used in some horizontal rolling mills is semi-automatic roll change or manual roll change. The roll change is mainly divided into two steps: roll loading and roll extraction. The operation steps of roll loading are as follows: (1) Place the work rolls on the roll changing trolley; (2) Manually lift the hook head of the roll changing trolley and fix it with fixing pins; (3) Manually operate the trolley to push the rolls to the rolling mill Inside; the operation steps of the roll extraction are as follows: (1) Manually lift the hook head of the roll changing trolley and fix it with a fixed pin; (2) Manually operate th...

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of semi-automatic or manual roll changing, it is necessary to manually operate the roll-changing trolley coupler for many times. Due to the influence of the position of the trolley coupler, the position of the personnel and its own weight, there are difficulties in the operation process, and the following problems will arise: (1 ) The hook head cannot be unhooked and hooked automatically, resulting in prolonged roll change time; (2) There is a human-machine combination at the roll change position, and the position space is not good, so there is a big safety hazard

(3) Due to the relatively streamlined staffing at present, the status and time of roll changing cannot be controlled

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