Reduced stroke bidirectional speed limiting system with bidirectional speed limiter

Abstract

The invention discloses a stroke-reduction bidirectional speed limiting system provided with a bidirectional speed limiter. A rope wheel and a ratchet wheel are coaxially and rotatably assembled on a base of the limiter of the stroke-reduction bidirectional speed limiting system. A pawl torsional spring is arranged between a rotatable pawl at one side of the rope wheel and the rope wheel. A pawl positioning structure is also rotatably assembled on the rope wheel. The ejecting end of the pawl positioning structure is elastically matched with the pawl in an ejecting mode. A disk is coaxially fixed to the wheel surface, away from a gravity hammer, of the ratchet wheel. Automatic reset switches are arranged on the periphery of the disk and located on the circumference of the same set of concentric circles of the disk. Levers of the automatic reset switches stretch towards in the inner side. The free ends of the levers are located on the circumference of the same set of concentric circles of the disk. The gravity hammer touches the automatic reset switches in sequence when opened. According to the stroke-reduction bidirectional speed limiting system provided with the bidirectional speed limiter, extra top space and bottom space of an elevator do not need to be added to a corresponding building, and meanwhile, the purpose of adopting a higher-speed elevator can be achieved under the condition that the buffer cost does not need to be increased.

Description

Technical field [0001] The invention relates to a speed limiter protection system for limiting the running speed of an elevator, in particular to a reduced stroke and two-way speed limit system with a two-way speed limiter. Background technique [0002] With the development of social economy and the improvement of people's material level, there are more and more high-rise buildings, and the rated speed of elevators is getting higher and higher. Since the stroke of the buffer is proportional to the speed, this means that the higher the elevator speed, The larger the stroke of the buffer required, the higher the top space and bottom space of the elevator, which not only increases the cost of the buffer, but also greatly increases the construction difficulty and wastes the construction area. [0003] At present, the elevator speed is generally below 2.5m / s, and the elevator buffer is selected according to the elevator's rated speed. [0004] The buffer is an elevator safety device that...

AI Technical Summary

Problems solved by technology

[0002] With the development of social economy and the improvement of people's material level, there are more and more high-rise buildings, and the rated speed of the elevator is also getting higher and higher. Since the stroke of the buffer is proportional to the speed, it means that the higher the elevator speed, the higher the elevator speed. The larger the stroke of the required buffer, the higher the top space and bottom space of the elevator, which not only increases the cost of the buffer, but also greatly increases the construction difficulty and wastes the construction area

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