Power supply method and apparatus for large-sized multifunctional overhead travelling crane

Abstract

The invention discloses a method and a device for supplying power to a large multifunctional overhead traveling crane. In the method, an overhead traveling carne and a power distribution cabinet on the overhead traveling crane are arranged, and an insulated sliding trolley line is arranged on a cross beam on which the overhead traveling crane is operated; the inside of the insulated sliding trolley line is provided with a conductive body; the outside of the conductive body is wrapped with a layer of flame retardant insulating sleeve which is provided with a sliding chute; one end of the conductive body in the insulated sliding trolley line is connected with a power supply; a bracket is arranged on the overhead traveling crane; the other end of the bracket is connected with an electric bush through an insulator; a flexible cable is connected between the electric bush and the power distribution cabinet; and the electric bush extends into the sliding chute of the insulated sliding trolley line to contact the conductive body in the sliding chute, and can slide on the conductive body to transfer the power supply in the insulated sliding trolley line to the power distribution cabinet. The device has the characteristics of convenient installation, simple structure, small occupied space, convenient adjustment and flexible combination. The method and the device cannot influence normal power supply caused by cable braking, and reduce the maintenance and overhaul workload of a power supply cable of the overhead traveling crane. The device has large transmitting capacity, and the overhead traveling crane has wide running range in a factory building.

Description

technical field [0001] The invention relates to a power supply method and device for a large-scale multifunctional crane, belonging to the field of power supply for a crane. Background technique [0002] The power supply of general overhead cranes adopts the way of suspension cable power supply, pull the traction steel wire at both ends of the factory building, hang the slidable trolley on the traction steel wire, and hang the power supply cable on the trolley. Since one end of the cable is connected to the power supply on one side of the factory building, and the other end is connected to the distribution box on the crane, the cable will also move with the crane during the operation of the crane, so the cable will often bend or straighten, and the cable will be constantly affected. Bending is easy to cause fatigue fracture, causing power supply phase loss, short circuit or even burning accidents of electrical equipment. In addition, when the crane moves to the cable side, ...

AI Technical Summary

Problems solved by technology

The above problems are even more prominent, and the cable insulation is also aging quickly, which greatly increases the workload of cable maintenance and overhaul, and also affects production efficiency.

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