Crane slewing system

Abstract

The invention discloses a slewing system of a crane, which belongs to the field of ship machinery. The system includes: the large bottom plate of the tower body, the slewing bearing, the base column flange, the base column, the base column inner platform, the slip ring box support, the slip ring box and the upper guide rod, one end of the base column is used to be installed on the platform, The inner platform of the base column is set inside the base column, the slip ring box bracket is set on the inner platform of the base column, the lower stator of the slip ring box is installed on the slip ring box bracket, the base column flange, the slewing bearing and the large bottom plate of the tower body are installed in sequence On the other end of the base column, the inner ring of the slewing bearing is connected to the flange of the base column, and the outer ring of the slewing bearing is connected to the large bottom plate of the tower body; the upper guide rod is installed in the middle of the large bottom plate of the tower body and faces the slip ring box, and the upper rotor The flange of the base column is protruded, and the end of the upper rotor protruding from the flange of the base column is provided with a disc. The disc includes a plurality of holes arranged along the circumference of the disc, and the upper guide rod passes through the holes of the disc.

Description

technical field [0001] The invention relates to the field of ship machinery, in particular to a slewing system of a crane. Background technique [0002] Cranes (also known as marine cranes) are common marine cargo handling equipment. Since the cranes are mainly used to load and unload cargo on shore and on board, they need to have a slewing system. The core component of the slewing system is the slip ring box. The slip ring box is used to transmit electric energy to the crane on the large bottom plate of the tower body when the large bottom plate of the tower body rotates. The slip ring box is divided into two parts: the upper rotor and the lower stator. The upper rotor and the tower The body and the bottom plate rotate together with the crane, and the lower stator and the slip ring box bracket are fixed inside the base column. Among them, the large bottom plate of the tower body is installed on the base column through the slewing bearing. [0003] In the process of realiz...

AI Technical Summary

Problems solved by technology

However, for different types of cranes, the height of the slewing bearing is usually different, resulting in different heights of the tower body after installation.

The height of the slip ring box depends on the height of the slip ring box support, so the large floor of the tower body with different heights needs to be designed with different heights of the slip ring box support, resulting in inconvenience in design and processing; at the same time, there are often manufacturing errors in the slip ring box support, resulting in The height of the slip ring box support cannot match the height of the large bottom plate of the tower body. It is necessary to insert gaskets on site to increase the height of the slip ring box or cut off the slip ring box support to reduce the height of the slip ring box, resulting in low processing efficiency

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