Auxiliary door-closing device for elevator hoistway door

Abstract

The invention discloses an auxiliary door-closing device for an elevator hoistway door. The auxiliary door-closing device with an elastic part is arranged at the upper ridge of the elevator hoistway door, the upper end of the auxiliary door-closing device is connected with the upper ridge of the elevator hoistway door, a downward protrusion is arranged at the lower end of the auxiliary door-closing device, and a device for driving the hoistway door to be closed is provided with a driving part matched with the auxiliary door-closing device; in the closing process of the elevator door, the protruding side of the auxiliary door-closing device is extruded firstly, and in the process, the elastic part is compressed and stores energy; and after passing through the protrusion of the auxiliary door-closing device, the elastic part releases the energy, the other protruding side of the auxiliary door-closing device pushes the hoistway door to continue being closed, and thus the auxiliary door-closing effect is achieved. On the basis of not increasing force of a door-closing forcing device of the hoistway door and newly additionally arranging a control component, auxiliary force is provided at the door-closing tail end of the hoistway, the influence of the chimney effect of a high-rise building on the failure that the elevator door cannot be closed can be effectively reduced, the people trapping rate is decreased, and the elevator use efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an auxiliary door closing device for elevator hall doors. 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...

AI Technical Summary

Problems solved by technology

[0005] However, these methods require the addition of special detection units or additional auxiliary devices, or the addition of control system controls, which will lead to an increase in the driving force and power of the motor on the car door side; that is to say, these methods need to increase more The cost can only be used, and it is not easy to improve and optimize the old elevator, which is more inconvenient in practical application

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