Method and device for replacing wheel group of bridge crane

Abstract

The invention relates to a method for replacing a wheel group of a bridge crane. The method comprises the following steps: jacking up a crane body by using a jack and placing a crane body support; returning the crane body to the crane body support; disassembling the wheel group and a connecting screw of a drive wheel; welding a channel steel guide rail on an end beam of the crane; locking a transverse beam and a sliding plate of the wheel group by using a locking bolt and pulling out the wheel group; carrying the wheel group to the ground and entrucking; disassembling a joint and a saddle of the old wheel group and assembling on the new wheel group; and hoisting the wheel group to a walking platform of the crane. Compared with the prior art, the method has the benefits that the characteristics of reasonable structural design and high safety are achieved; the walking wheel group moves along the guide rail through the sliding plate and the guide rail, so the wheel group can move with balance; the operation steps of replacing the wheel group of the bridge crane are simplified; the work intensity and the complex degree are effectively reduced; the production time is saved; the potential safety hazard of the work is eliminated; and personal injury accidents are avoided.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a method and device for replacing a wheel set of an overhead crane. Background technique [0002] The wheel set and balance beam assembly of a large-tonnage bridge crane in a steelmaking plant have a large weight and overall size. Taking a 300t crane as an example, the traveling wheel set weighs about 13t, is 6.3m long, and 1.8m high. When replacing the wheel set, in order to maintain The usual way to balance the wheel set is to hang multiple chain cranes within a small angle range above the wheel set. The operator operates on the side of the wheel set. When the wheel set swings left and right, it will endanger the safety of the workers. The wheel set is under the end beam. When moving in and out, it is easy to dump, and the replacement is technically difficult, heavy workload, and dangerous. The traction and balance of the wheel set is the key to the entire operation process, and it is di...

AI Technical Summary

Problems solved by technology

[0002] The wheel set and balance beam assembly of a large-tonnage bridge crane in a steelmaking plant have a large weight and overall size. Taking a 300t crane as an example, the traveling wheel set weighs about 13t, is 6.3m long, and 1.8m high. When replacing the wheel set, in order to maintain The usual way to balance the wheel set is to hang multiple chain cranes within a small angle range above the wheel set. The operator operates on the side of the wheel set. When the wheel set swings left and right, it will endanger the safety of the workers. The wheel set is under the end beam. When moving in and out, it is easy to dump, and the replacement is technically difficult, heavy workload, and dangerous. The traction and balance of the wheel set is the key to the entire operation process, and it is difficult in actual operation

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