Method and tool for mounting upper rail in overhead position in narrow and small space

Abstract

The invention relates to a method and tool for mounting an upper rail in an overhead position in a narrow and small space. The method includes the following mounting steps that a sliding support for mounting the upper rail is manufactured; U-shaped sliding guide rails of the sliding support are mounted on a lower rail below the upper guide rail needing to be mounted; the U-shaped sliding guide rails and the lower rail are locked through locking bolts; the upper surfaces of horizontal beams of the sliding support are smeared with lubricating grease or lubricants; the upper guide rail is placed on the sliding support; the upper rail is sideslipped to be below an upper guide rail foundation, lifting bolts are adjusted, the upper rail is spot-welded to a pre-embedded part of the foundation, and whether the horizontal line and the central line of the upper rail change or not is retested through a spirit level and a magnetic plumb bob; and welding is carried out if no change occurs. According to the method for mounting the upper rail in the overhead position in the narrow and small space, the tool for mounting is simple, operation is convenient, and existing resources in a workshop are fully used; under the precondition of safety and reliability, the construction cost can be greatly reduced, and the mounting period can be greatly shortened.

Description

technical field [0001] The invention relates to a rail installation method, in particular to a rail supine installation method in a narrow space. Background technique [0002] The installation of the upper track of walking beams and other equipment is affected by factors such as narrow installation space, upside-down installation without hoisting points, and large installation length, and the position deviation of the embedded parts of the civil foundation also has a great impact on the installation, resulting in a longer installation period for the upper track. , the installation quality is not high. Therefore, the installation on the upper track is a difficult point for equipment such as walking beams. [0003] The walking beam of the cold rolling line and the rolling trolley of some uncoilers (coilers) have upper rails installed upside down. The traditional method in the installation process of the upper track is to weld the measure hanger, hoist the upper track to the ...

AI Technical Summary

Problems solved by technology

First, the upper track is installed in the pit, the space is narrow and difficult to operate, and it is installed in the supine position, basically there is no hoisting point; second, due to the relatively large length and stroke of the walking beam, the total length of the upper track is also relatively large , the upper track is composed of many sections, so many hangers need to be welded; third, when installing and debugging the walking beam trolley, it is necessary to repeatedly disassemble and assemble part of the upper track, and it is necessary to weld the hanger many times

Fourth, due to the complex shape of the foundation of the walking beam, the foundation often has mold expansion, etc., resulting in excessive position deviation of the embedded parts

The above problems lead to a long installation cycle of the upper track and low installation accuracy

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