Device for preventing speed governor of machine-roomless elevator from automatically resetting

Abstract

The invention discloses a device for preventing a speed governor of a machine-roomless elevator from automatically resetting. The device comprises an oscillating rod, a push rod and a locking plate, wherein the oscillating rod is pivoted with the speed governor and has a first position and a second position, and a locking shaft is fixed at one end of the oscillating rod; the push rod is pivoted with the speed governor and used for pushing the locking shaft to enable the oscillating rod to move from the first position to the second position; and the locking plate is rotatably connected to the speed governor, separably propped against the locking shaft and used for locking the oscillating rod at the first position or the second position. When the speed governor acts at an excessively high speed, an oscillating arm of the speed governor pushes the push rod to rotate, the push rod pushes the locking shaft to enable the oscillating rod to move from the first position to the second position, the locking shaft pushes the locking plate to rotate, the locking plate is separated from the locking shaft after rotating by a certain angle, and at the moment, the locking plate returns to the original position and is propped against the locking shaft again, so that the oscillating rod is locked at the second position and cannot reset, equivalently, the speed governor is in a set state and is prevented from automatically resetting, and accordingly, the safety of the machine-roomless elevator is higher.

Description

technical field [0001] The invention relates to the technical field of elevator overspeed governors, in particular to a device for preventing automatic reset of a machine room-less elevator overspeed governor. Background technique [0002] Compared with machine-room elevators, machine-room-less elevators move the control cabinet, traction machine, speed limiter, etc. in the original machine room to the top of the elevator shaft or the side of the shaft, thus canceling the traditional machine room and maintaining the original performance. Miniaturization under the premise to meet customers' special requirements for height and roof. [0003] For elevators, the speed limiter is one of the safety control components and is a very effective emergency brake device for the elevator car. When the safety protection device does not work, the speed limiter and the safety gear will have a linkage action to stop the elevator car. [0004] Existing speed governors used for machine-room-l...

AI Technical Summary

Problems solved by technology

Since the overspeed governors of machine-room-less elevators do not have the function of preventing the automatic reset of the overspeed governors, they cannot effectively brake the elevator. Specifically, the overspeed of the elevator downwards causes the overspeed governor to act to pull the safety gear to brake the car. Due to the inertia, it continues to be thrown upwards, and then falls down after reaching the highest point, thereby pulling the car to move upwards. If there is no restriction, the speed limiter will automatically reset at this time, so that the elevator car can continue to go down, so that it is possible Causing personal injury to passengers or damage to elevator components

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