Abstract

The present invention relates to a device and a method for preventing an escalator from going in reverse, the device being operated independently of a brake device such as a main brake or an emergency stop brake of the escalator and mechanically preventing the escalator from going in reverse even if a drive device or the brake device of the escalator is disabled due to a power outage or a systematic error of the escalator.

IPC Classes  ?

• B66B 29/00 - Safety devices of escalators or moving walkways
• B66B 25/00 - Control of escalators or moving walkways

Abstract

The present invention relates to an independent brake apparatus for an elevator, comprising: a helical gear that rotates together with a pulley of the elevator; a driven gear that rotates in conjunction with the helical gear; an electronic clutch that controls a connection between the driven gear and a transmission gear; a brake motor, the central shaft of which is rotated by the transmission gear; a plurality of switching means connected to a plurality of winding wires that are stators of the brake motor; and a controller that controls a brake force by supplying an operating pulse to a selected switching means. Therefore, in the case of a breakdown in the elevator, it is possible to stop the elevator at a low speed according to the operating pulse supplied by the controller, thereby protecting human lives.

IPC Classes  ?

• B66B 5/06 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
• B66B 5/16 - Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well

Abstract

The present invention relates to a safe operation-stop method for an escalator for safely operating and stopping an escalator that senses an abnormal speed of the escalator so as to prevent passengers from falling. A safe operation-stop method for an escalator is provided, the method including sensing an abnormal speed of the escalator and stopping the escalator before it is reversely rotated, and being capable of reliable braking when an abnormal speed of the escalator occurs, thereby preventing passengers from falling by adjusting the inertial stopping distance when braking.

IPC Classes  ?

• B66B 25/00 - Control of escalators or moving walkways
• B66B 29/00 - Safety devices of escalators or moving walkways

Abstract

The present invention relates to a low-speed brake apparatus for an escalator, comprising: a brake sprocket mounted on a drive shaft for a step; a driven sprocket connected to the brake sprocket through a brake chain to operate in conjunction with the brake sprocket; an electronic clutch that controls a connection between the driven sprocket and a transmission gear; a brake motor of which the central shaft is rotated by the transmission gear; a plurality of switching means connected to a plurality of winding wires that are stators of the brake motor; and a controller for supplying an operating pulse to a selected switching means. Therefore, when there is an abnormality in an escalator, it is possible to stop a step at a low speed according to an operating pulse supplied by the controller, thereby stably stopping riders standing on the step and thus protecting the riders.

IPC Classes  ?

• B66B 29/00 - Safety devices of escalators or moving walkways
• B66B 25/00 - Control of escalators or moving walkways

Abstract

The present invention relates to a comb plate which includes a detection line installed in a single continuous line in order to detect the breakage of teeth of the comb plate fixed at the front of a landing plate of an escalator, thereby being capable of observing the breakage status of all teeth and having a simple configuration for the detection, and which uses only a single detection line while observing all of a plurality of teeth provided in the comb plate, thereby minimizing the cost for observing the teeth.

IPC Classes  ?

• B66B 29/06 - Combplates