Multistage-speed-limiting fall protection device of construction hoist

Abstract

The invention relates to the technical field of building equipment, and discloses a multistage-speed-limiting fall protection device of a construction hoist. The device comprises an outer shell, the interior of the outer shell is movably connected with a main shaft, the exterior of the main shaft is movably connected with a clamp braking device, the exterior of the main shaft is fixedly connectedwith a copper sheet ring, electromagnetic rings are movably connected to the exterior of the copper sheet ring, positioning sleeves are fixedly connected to the exteriors of the electromagnetic rings,an inductor is arranged in each positioning sleeve, and a speed-limiting electromagnet is fixedly connected to the interior of each positioning sleeve. Through cooperative use of the copper sheet ring, the electromagnetic rings, the positioning sleeves, the inductors, the speed-limiting electromagnets, speed-limiting magnets, speed-limiting lantern rings and push rods, the effect of automaticallylimiting the rotating speed of the main shaft is achieved, thus the too high rotating speed of the main shaft is effectively avoided, the stability of the rotating speed of the main shaft is guaranteed, further, the stability of the lifting process of the hoist is guaranteed, then the safety of workers and goods is guaranteed, and the use effect of the device is improved.

Description

technical field [0001] The invention relates to the technical field of construction equipment, in particular to a multi-stage speed-limiting and anti-falling device for a construction elevator. Background technique [0002] The construction hoist plays an important role in the construction field and is an important construction auxiliary equipment. The construction hoist generally adopts the lifting method of gear, rack or wire rope to make the hanging cage move vertically or inclined to transport construction personnel, tools and equipment. and logistics construction machinery. The construction hoist can operate safely, mainly because it is equipped with anti-fall safety device, which improves the safety factor of equipment operation. However, the existing anti-fall safety device has complex structure, difficult maintenance, low service life, and is often only used in anti-fall. It can not effectively limit the lifting speed of the elevator, so that the existing anti-fall ...

AI Technical Summary

Problems solved by technology

Construction hoists can operate safely, mainly because they are equipped with anti-fall safety devices, which improve the safety factor of equipment operation. However, the existing anti-fall safety devices have complex structures, difficult maintenance, low service life, and are often only used in anti-fall It plays a role, but cannot effectively limit the lifting speed of the elevator, resulting in poor use effect of the existing anti-fall safety device, and slow anti-fall response, often long anti-fall braking stroke, resulting in reduced safety in use

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