Method for mounting and centering rotating shaft supported by bearing bush with parallels

Abstract

The invention discloses a higher mounting efficiency method for mounting and centering a rotating shaft supported by a bearing bush with parallels. The method comprises the following steps of: uniformly coating a coloring layer on a shaft neck, rotating the rotating shaft, and checking a color strip on the bearing bush caused by friction with the shaft neck; after determining the deflection direction of the centre line of the rotating shaft relative to two bearing centre lines, removing the color strip, and adjusting the thickness of the parallels contacted with a supporting bearing and a thrust bearing according to the deflection direction; and repeating the previous step until the color strip in the step meets the requirement that traces on two left and right sides of the centre line ofthe lower bearing bush are parallel and symmetrical about each other and are continuous in the axial direction of the bearing bush, and checking whether the coaxiality of the centre line of the rotating shaft and the centre line of two bearings meets the mounting requirement. Compared with the traditional turbine axle centering technology, the method saves complicated calculation, and greatly improves the device mounting efficiency. Therefore, the method has more practicality and operability.

Description

technical field [0001] The invention relates to a method for installing and aligning a rotating shaft of equipment, in particular to a method for installing and aligning a rotating shaft supported by a bearing bush with pad irons. Background technique [0002] At present, large-scale equipment such as blast furnace top gas residual pressure recovery turbine generators, etc., in order to minimize the vibration and noise during equipment operation and prolong the service life of the equipment, all have requirements for the installation of the shaft, especially between the shaft and the bearing. The coaxiality should meet the requirements. A rotating shaft supported by bearing pads with backing irons. The journals of the rotating shaft are respectively supported by support bearings and thrust bearings. There is a bearing pad between each bearing and the rotating shaft. The bearing pad is composed of an upper pad and a lower pad. There is a shim, that is, the upper shim, and th...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the inefficiency of the existing installation and alignment method of the shaft supported by the bearing pad with shim iron, the technical problem to be solved by the present invention is to provide an installation of the shaft supported by the bearing pad with shim iron with higher installation efficiency. Find the right way

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