Flexible bidirectional elevator speed limiter

Abstract

The invention discloses a flexible bidirectional elevator speed limiter. The flexible bidirectional elevator speed limiter comprises a speed limiter rope wheel, and further comprises a triggering device and a braking device; the triggering device comprises a throwing block mechanism, an eccentric locking ring, a notch rotating wheel and a locking plate, wherein a first spring and a spring bolt arearranged in a locking plate radial blind locking hole; the braking device comprises a friction block carrier plate, a friction block, a friction block support rod and a bolt guide rod; the friction block is adhered to the friction block carrier plate, one end of the friction block support rod abuts against the notch of the notch rotating wheel, and the other end of the friction block support rodis connected to the bolt guide rod in a sleeved mode; and the bolt guide rod is fixed on a support, wherein a second spring is further arranged between the friction block carrier plate and the support. According to the flexible bidirectional elevator speed limiter, flexible braking is realized, and the safety comfort degree of an elevator user is improved; and meanwhile, only one set of triggeringdevice and braking device are needed, so that the speed limiting function for preventing ascending and descending over-speed running of the elevator is achieved, the structure is simple, and the costis reduced.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a flexible two-way elevator speed governor. Background technique [0002] At present, the speed limiter of the elevator mainly has two structural forms: the pendulum type and the centrifugal type. The former mainly uses the cam speed to affect the rhythm and amplitude of the swing of the pendulum. When the speed limiter sheave speed reaches the threshold set by the speed limiter, The pendulum triggers the overspeed brake switch, making the sheave stop running, further triggering the braking action of the safety gear, and finally achieving the effect of elevator braking. The latter mainly uses the throwing block to move away from the center of rotation under the action of centrifugal force, thereby triggering the brake switch, and finally making the elevator stop running. [0003] Regardless of whether it is a pendulum or a throwing block, triggering the brake switch is achieve...

AI Technical Summary

Problems solved by technology

[0003] Regardless of whether it is a pendulum or a throwing block, triggering the brake switch is achieved through the action of the pawl snapping into the tooth groove of the ratchet wheel, which will produce a large impact, causing great discomfort to passengers, and even fear, and will Affect the service life of the speed limiter

In addition, most speed limiters only have a one-way speed limit function, which is only effective for elevator downlink overspeed speed limit. A speed limiter that realizes a two-way speed limit function needs to be equipped with two sets of trigger braking devices

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