An electromagnetic spreader for unmanned crane

Abstract

The invention relates to the field of lifting tools, in particular to an electromagnetic lifting tool for an unmanned crane. The electromagnetic lifting tool comprises a transverse beam for crane lifting; a space below the transverse beam is connected with an electromagnetic sucking disc; the sucking surface of the bottom of the electromagnetic sucking disc is a cambered surface; and transverse position detection instruments and longitudinal position detection instruments are arranged on the transverse beam. A sucking contact area and suction force can be increased; the electromagnetic suckingdisc can be guaranteed to be accurately aligned to the center line of a steel coil; and the problem that the steel coil of a single-plane sucking disc slides and rolls due to imbalance of a lifting center is solved.

Description

technical field [0001] The invention relates to the field of spreaders, in particular to an electromagnetic spreader for unmanned cranes. Background technique [0002] At present, there are mainly two types of hangers used for lifting steel coils, one is the lifting method using telescopic pincer legs with double hooks, and the other is the C-shaped hook method. The deficiencies of the prior art mainly include several points. 1. Regardless of whether it is a double-hook telescopic clamp or a C-shaped hook, it is necessary to align the hook with the steel coil hole and insert it during the lifting operation, resulting in a decrease in efficiency; 2. For the double-hook telescopic clamp, when lifting and After lifting and unloading in place, it is necessary to condense or expand the legs of the tongs, which wastes a certain amount of work time. 3. For the C-shaped hook, it is difficult to apply it to unmanned cranes due to the limited structure. Contents of the invention ...

AI Technical Summary

Problems solved by technology

1. Regardless of whether it is a double-hook telescopic clamp or a C-shaped hook, it is necessary to align the hook with the steel coil hole and insert it during the lifting operation, resulting in a decrease in efficiency; 2. For the double-hook telescopic clamp, when lifting and After lifting and unloading in place, it is necessary to condense or extend the legs of the tongs, which wastes a certain amount of work time

3. For the C-shaped hook, due to the limited structure, it is difficult to apply it to unmanned cranes

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