Power assisting closing device for elevator hall doors

Abstract

The invention discloses a power assisting closing device for elevator hall doors. A power assisting device is arranged on an upper sill of the elevator hall doors. The power assisting device has a stretching state and a contracting state. When the elevator doors are opened and closed, the power assisting device is in a stretching state and matches with a sedan door vane in an abutting mode, wherein at the closing end of an elevator, the power assist device makes use of the driving force of the sedan door to make the hall doors completely closed by matching with the sedan door vane in an abutting mode. In the ascending and descending process of the elevator, the power assisting device is in a contracting state, and has a certain gap with the sedan door vane so that the ascending and descending of the elevator can not be affected. On the basis of not increasing the force of a forced closing device of the hall doors, the power assisting closing device uses the driving force of the sedan door to make the hall doors completely closed at the closing end of to make the hall door completely closed without affecting the opening of the doors and the ascending and descending of the elevator.By the power assisting closing device for the elevator hall doors, the influence of the chimney effect of high-rise buildings on the failure that the elevator doors can not be closed is effectively reduced, the trapped rate is reduced, and the service efficiency of the elevator is improved.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an elevator hall door assist door closing device. Background technique [0002] With the increasing number of high-rise buildings, elevators, as a vertical transportation tool, bring great convenience to people's daily travel. However, the chimney effect of high-rise buildings has caused great difficulties to the use of elevators, especially the failure of the hall door of the elevator to close the door. The so-called chimney effect means that, for example, in winter cold areas, the outdoor ambient temperature of high-rise buildings is low, and the outdoor air density is greater than that of the room. Floating upwards and oozing out, the air in the shaft forms convection with the outside world, resulting in a large pressure difference between the elevator shaft and the lobby on the side of the hall door. The air pressure difference increases the resistance of the hall door, b...

AI Technical Summary

Problems solved by technology

[0008] An elevator hall door power-assisted door closing device. A power-assisted device is arranged on the upper sill of the elevator hall door. The power-assisted device has an extended state and a contracted state; The door knife is offset and matched, wherein, at the end of the elevator door closing, the booster device uses the driving force of the car door to completely close the hall door through the offset cooperation with the car door door knife, which solves the problem that the hall door loses the car door at the end of door closing. The driving force of the side door motor causes the problem that it cannot be completely closed; when the elevator is going up and down, the booster device is in a contracted state, and there is a certain gap with the car door knife, which will not affect the elevator running

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