Harrow lifting device of centre drive and harrow centre automatic lifting thickener

Abstract

The invention discloses a harrow lifting device of a centre drive and harrow centre automatic lifting thickener, which solves the problems of the device in the prior art such as complicated structure, high cost, long processing period and difficulty in main shaft lifting. The device is characterized by further including a slewing bearing, a connecting base, a rotating base, bearing pedestals and a hinged support, wherein the hinged support is mounted at the upper part of a lifting support and connected with the rotating base; the bearing pedestals are mounted on the two sides on the upper plane of the rotating base; the cylinder body of an oil cylinder is mounted on the bearing pedestals; a piston rod of the oil cylinder is connected with an outer ring of the slewing bearing through the connecting base; and an inner ring of the slewing bearing is connected with a main shaft. According to the invention, as the slewing bearing capable of bearing axial force, radial force and turning torque serves as a transitional connecting device, the structure is simplified, and the reliability of a connecting structure is improved; few elements are adopted, trouble spots are few, the production period is shortened, the production and manufacture cost is low; and site care and maintenance are facilitated.

Description

technical field [0001] The invention relates to a rake lifting device of a concentrator, more precisely, relates to a rake lifting device of a central drive center automatic rake lifting concentrator. Background technique [0002] The central transmission center automatic rake-lifting concentrator is equipped with an automatic rake-lifting device, which realizes the lifting of the scraper rake through the lifting spindle. The lifting actuator of the rake lifting device is connected to the main shaft, and the main shaft rotates continuously during work. If the rake lifting device rotates with it, the power transmission of the rake lifting device will be very difficult. In order to provide power for the lifting actuator, the prior art generally installs a set of transitional connection devices at the end of the main shaft, and the lifting actuator is connected to the main shaft through the transitional connection device, so that the lifting actuator only moves. Planar thrust ...

AI Technical Summary

Problems solved by technology

This structure is not only complicated in structure, high in cost and long in processing cycle, but also has defects in the fastening of bearings, which often causes relative rotation failure during production and makes it difficult to lift the spindle

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