TRAVELLING RADIAL-CIRCULAR CRANE Russian patent published in 1994 - IPC

FIELD: handling equipment. SUBSTANCE: crane has main beams with rails of a crane truck laid on them, two end beams of the crane truck rigidly connected to the ends of main beams, a crane operator cabin, the crane is made without under the crane beams. The outer end beam is made in the form of a segment, bearing-drive rollers are mounted on under the crane cantilevers of columns. The brackets of the rollers are made integral with a roller drive and a control device. The inner end beam pivotally mates the main faceplate of the crane which rests by a thrust rolling bearing against the upper end of the lower column of the central shaft. A cylindrical wall rotating as a single body together with the main faceplate and the whole crane about the central axle is mounted on the upper plane of the main faceplate. Three current feed buses in the form of collector rings are mounted on the upper post of the central shaft. The crane truck is fed from the buses by a current collector, the drive of the bearing drive rollers is fed by a cable current supply laid in advance under the shop floor. EFFECT: improved structure. 2 dwg