Guiding device for rotating mechanism of ring crane

Abstract

A guiding device of a rotating mechanism of a ring crane relates to an auxiliary device of cranes. The guiding device of the prior art is composed of four groups of inside guide wheel devices arranged on the four angles of a crane; the adjustment of the clearance between a horizontal roller and an orbit thereof is not easily controlled, which causes the problems that the horizontal guide wheels of the ring crane has fast wear and short service life, and the crane has poor centering property and low positioning accuracy of hoisting points, etc. The guiding device has two groups of the guide wheel devices which are respectively arranged on two ends of an end beam of the crane, and the mounting frame for each group of the guide wheel device is connected with the end beam of the crane; an idler axle is fixed with the mounting frame; four horizontal rollers are fixed on the mounting frame by bearings and horizontal roller shafts, wherein, two horizontal rollers are arranged at the insides of the orbit, and the other two horizontal rollers are arranged at the outsides of the orbit; and the idler axle and the horizontal roller shafts are eccentric structures. The guiding device solves the problems existing in the prior art and ensures that the crane are in optimum running state.

Description

technical field [0001] The invention belongs to hoisting machinery, in particular to a horizontal guide device for a rotary motion mechanism of a ring crane used in a nuclear power plant. Background technique [0002] In order to ensure that the ring crane used in nuclear power plants runs well on the ring track, so that the center of the crane coincides with the center of the containment, the rotating motion mechanism is equipped with a guide device. As shown in Fig. 5, the guide device of the rotary motion mechanism of the former ring crane is four groups of guide wheel devices installed on the four corners of the crane. Each set of guide wheel devices has two horizontal rollers, and the raceway of the horizontal rollers is the inner surface of the ring track or the inner surface of the lower cover plate of the ring track bearing beam. Because there is a certain diameter tolerance and ellipticity tolerance in the manufacture of the circular track, if the gap between the h...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a guide device for the rotary mechanism of the ring crane in view of the shortcomings of the above-mentioned prior art, so as to solve the problems of fast wear and short life of the horizontal guide device of the ring crane for a long time, resulting in poor neutrality of the crane and positioning of the lifting point Low precision and other issues, thus ensuring that the crane can be in the best operating condition

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