Braking system and method for automatic revolving door

Abstract

The invention discloses a brake system and a brake method of an automatic revolving door. The technical scheme of force resolution and force inversion on an inclined surface is adopted in order to change the direction of a part of an impact force during braking, so that the impact force along the forwarding direction of a door wing is reduced, the resolved force is vertical to the direction of the impact force and is used as positive pressure of a bearing system of the revolving door, the positive pressure is overlapped with the original positive pressure of the bearing system, and the total positive pressure is increased; since a friction force is equal to the product of the positive pressure and a friction coefficient, the brake force is increased, and the impact force is reduced; meanwhile, the positive pressure (Fz) resolved from the impact force acts on the position above an outer top rail of the revolving door and has a restraining function on the vertical direction of the revolving door, so that the shaking of the door wing during braking is effectively reduced. According to the brake system disclosed by the invention, a brake wheel adopted by the brake system is a metal wheel which is externally coated with polyurethane, the brake wheel deforms in the diameter direction when the Fz acts on the brake wheel, and the impact force does work in the vertical direction, so that energy generated by the impact force is consumed, and the impact is reduced.

Description

technical field [0001] The invention relates to the field of braking of revolving doors, in particular to a braking system and method for automatic revolving doors. Background technique [0002] The weight of the running part of the two-wing automatic revolving door is between 800-1000 kg. When such a large weight runs at a speed of 500-750mm / s, it will generate an impact force along the forward direction of the door wing, and the value is between 2000-3000N. According to the standard <JG305-2011 Safety Requirements for Pedestrian Automatic Doors>, the maximum impact force of the revolving door must be less than 1400N, otherwise it will not meet the safety standard, so effective control of the impact force is the key parameter for whether the revolving door meets the standard. The braking method of the existing revolving door is through the electromagnetic brake fixed on the inner cap head (running part), and the brake wheel is combined with the lower part of the outer...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a braking system and method for an automatic revolving door, which uses force decomposition to partially decompose the impact force generated by the revolving door during operation into positive pressure in a direction different from the impact force, To solve the problem of reducing the excessive impact force when the revolving door is running

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