Patent ID: 11891273

Abstract:
The present invention relates to an overspeed and reverse drive preventing device for an escalator. The device has a pawl and a connection part mounted to be connected by a tension spring such that, when the pawl is inserted into gears of the ratchet and is compressed by a ratchet, the tension spring is extended and the pawl is perfectly inserted into the ratchet, thereby making it possible to apply the same to escalators having various specifications. A braking member is mounted on the inner peripheral surface of a brake arm mounted outside a ratchet part or a rotary shaft, or on the outer peripheral surface of the device facing the brake arm. Therefore, the overspeed and reverse drive preventing device can apply additional braking power to the escalator rotary shaft to prevent a damage of a brake lining mounted on the ratchet part, prevent overspeed or reverse rotation of the escalator even though the brake lining is damage so as not to show the braking power, and reduce installation expenses and period of time and prevent deterioration in durability caused by perforation work since there is no need to perform perforation work to the escalator rotary shaft and the escalator support frame.