A pull-up mechanism for speed governor safety gear that saves elevator shaft space

Abstract

The invention relates to a speed limiter safety clamp lifting mechanism for saving elevator hoistway space. A speed limiter is arranged on a car assembly, and the bottom of the speed limiter is connected with a speed limiter mounting base; a rotating shaft is fixed on a car frame upper beam; the speed limiter mounting base and the rotating shaft form a rotating shaft moving pair; the speed limiter can rotate around the rotating shaft; one end of a safety clamp pull rod is connected with the speed limiter, and the other end is connected with a safety clamp linkage mechanism connecting rod; the safety clamp linkage mechanism connecting rod is connected with safety clamps; and one end of a speed limiter steel wire rope is fixed at the top of a hoistway, and the other end is guided to the bottom of the elevator hoistway by a guide device, connected with tensioning device arranged at the bottom of the elevator hoistway and tensioned by the tensioning device. The mechanism is simple in structure and reliable in functions, can greatly save the hoistway space compared with a traditional speed limiter steel wire rope rotating around a speed limiter rope wheel and expansion tensioning wheel, in particular, is suitable for an elevator with narrow hoistway space, or even a hoistway mounting elevator incapable of being installed due to space limit.

Description

technical field [0001] The invention relates to a safety gear lifting mechanism of a speed governor which saves space in an elevator shaft. The lifting mechanism has a simple structure and saves space, and is especially suitable for elevators and inclined elevators with limited space in the shaft. Background technique [0002] The speed limiter and safety gear are one of the important safety components of the elevator, which play the role of overspeed protection during the operation of the elevator. In the prior art, the speed limiter monitors the speed of the car, and the steel wire rope of the speed limiter is tightened by the weight tensioning device, and the steel wire rope of the speed limiter is connected with the rope head handle in the lifting mechanism of the safety gear. The lifting mechanism of the safety gear is installed on the frame of the elevator car and moves with the car. When the elevator runs overspeed, the speed limiter clamps the wire rope of the speed ...

AI Technical Summary

Problems solved by technology

Therefore, in the case of very limited space in the hoistway, especially when the pit space of the hoistway is very narrow or in the inclined elevator shaft, there may be a risk of interference between the governor wire ropes when the governor wire rope is looped, and conventional The heavy hammer of the tensioning device is mostly swing arm type, which occupies a large space and plane in the pit. This type of speed limiter safety gear lifting mechanism will be greatly restricted, which will greatly increase the difficulty of elevator structure layout, and may even The elevator cannot be installed due to the inability to make a reasonable structural arrangement

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