Large excavator slewing bearing guiding assembling method

Abstract

The invention discloses a large excavator slewing bearing guiding assembling method. The assembling method comprises the following steps that in the assembling process, a rotation speed reducer is assembled to a rotation platform, a slewing bearing with a positioning pin is assembled to a chassis, then, the rotation platform is hoisted, two threaded holes are selected in the rotation platform forguiding pin screwing-in, the conical ends of guiding pins are guided in corresponding slewing bearing outer ring holes, the rotation platform slowly descends by a certain height, a certain distance isreserved between the rotation platform and the slewing bearing, a hook type wrench is used for conducting angle adjustment on a rotation speed reducer gear, the speed reducer gear can be successfullyengaged with a slewing bearing gear, and after the installing faces of the rotation platform and the slewing bearing are tightly attached, the guiding pins are unscrewed out, and gaskets and bolts are arranged. By usage of the device, assembling is safe and efficient, and the positioning precision is high.

Description

technical field [0001] The invention relates to the field of excavators, in particular to a large-scale excavator slewing bearing guide assembly method. Background technique [0002] When installing slewing bearings in large-scale construction machinery, two assembly methods are often used. One is to install the slewing bearings on the chassis, lift the slewing platform, and slowly drop it to observe the gap between the small gear and the large gear at this time. For the meshing situation, if the meshing is improper, the platform should be raised, the pinion gear should be moved, and then the rotary platform will continue to drop down. Sometimes it needs to be adjusted several times before it can be successfully assembled. Another installation method is to install the slewing bearing on the chassis without installing the slewing reducer first, and then directly determine the position of the slewing bearing through the pin positioning of the outer ring of the slewing bearing,...

AI Technical Summary

Problems solved by technology

Another installation method is to install the slewing bearing on the chassis without installing the slewing reducer first, and then directly determine the position of the slewing bearing through the pin positioning of the outer ring of the slewing bearing, and then lift the slewing reducer for installation, but Because the meshing between the gear of the slewing reducer and the gear of the slewing bearing is not easy to adjust, and because the number of slewing reducers of large excavators is large, a lot of time will be wasted on adjusting the angle of the pinion

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