Protective dismantling construction method for 280-ton travelling crane

Abstract

The embodiment of the invention discloses a protective dismantling construction method for a 280-ton travelling crane, which comprises the following steps that a roof is dismantled according to the position of the travelling crane; accessory components of the traveling crane are dismantled; before power failure of the traveling crane, a plate hook falls back to a trailer, all wire ropes on a reel are returned, the wire rope heads are pulled back to the ground, the wire ropes are cut section by section, and the plate hook and the cut wire ropes are removed; a cab is slowly descended for 3m by using a chain block, then butting is carried out by using a truck crane, and finally the cab is descended to the ground; an auxiliary trolley is dismantled, disassembled and loaded, a main trolley is dismantled, disassembled and loaded, an auxiliary beam and an end beam are dismantled, disassembled and loaded, a main beam is dismantled, disassembled and loaded, and the trolley is dismantled and loaded, after the trolley is dismantled, loaded and transported out, the main beam on one side is dismantled, the main beam is hoisted with locks, and the two ends of the main beam are fastened with hemp ropes, an operator adjusts the rotation posture of the main beam through the hemp ropes, so that the beam is staggered from the track, and finally, the beam is put on the ground; and the roof is recovered. By means of the method, the problems encountered by protective dismantling of an existing 280-ton traveling crane are solved.

Description

technical field [0001] The invention relates to the field of driving dismantling, in particular to a protective dismantling construction method for a 280-ton truck. Background technique [0002] Due to the needs of the new iron-making project, a new 280-ton crane needs to be installed, and this tonnage crane is a special equipment, and the custom-made price is very high. Installation, greatly saving costs. [0003] The traveling 280t / 80t bridge crane is a 4-beam 4-track heavy-duty bridge crane with two trolleys, and the auxiliary trolley is under the main trolley. The gap between the highest point of the auxiliary trolley and the lowest point of the main trolley is about 200mm. The main beam, auxiliary beam and end beam are all box-shaped structures, and the end beam and the main and auxiliary beams are all connected by high-strength bolts. The traveling wheel of the cart is connected with the main beam through the pin shaft for the cart. The weight of the main beam of th...

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present invention provides a construction method for the protective demolition of 280-ton cranes, which solves the problems encountered in the protective demolition of existing 280-ton trucks

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