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.

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.

A monitored escalator barricade system is disclosed herein having a barricade assembly including a hosting column supporting a one-way swinging door and a magnetic locking mechanism. The barricade assembly is installable at a landing floor and allows for one-way passage of a user riding along an outer edge of an escalator in order to prevent injuries. The barricade assembly utilizes IR beam transmitters on an exterior of the hosting column to detect when a user arrives near the landing floor and unlock the one-way swinging door as the user approaches. The monitored escalator barricade system includes various visual and audio indicators for notifying authorities.

Provided is a passenger-conveyor step-chain monitoring system capable of monitoring elongation of a step chain without adding a special device. The passenger-conveyor step-chain monitoring system includes a monitoring unit configured to monitor elongation of a step chain attached to a step of a passenger conveyor based on a result of detecting the step by a sensor provided to detect an absence of the step. With this configuration, it is possible to monitor elongation of the step chain without adding a special device.

Provided is a passenger-conveyor step-chain monitoring system capable of monitoring elongation of a step chain without adding a special device. The passenger-conveyor step-chain monitoring system includes a monitoring unit configured to monitor elongation of a step chain attached to a step of a passenger conveyor based on a result of detecting the step by a sensor provided to detect an absence of the step. With this configuration, it is possible to monitor elongation of the step chain without adding a special device.

A passenger moving installation includes a plurality of tread elements forming an endless conveyor belt, wherein the tread elements are at least partially covered by at least one element that limits a transportation height of a user set of the installation. A safety system is configured to detect a risk of collision between the user set and the covering element. A method of determining a risk of collision between a user set and at least one covering element in a passenger moving installation at least partially covered by the covering element, includes determining the height of the user set in a monitoring area via a safety system, comparing the height of the user set to the height of a safety threshold, and triggering an event in the safety system if the user height exceeds the safety threshold.

A passenger moving installation includes a plurality of tread elements forming an endless conveyor belt, wherein the tread elements are at least partially covered by at least one element that limits a transportation height of a user set of the installation. A safety system is configured to detect a risk of collision between the user set and the covering element. A method of determining a risk of collision between a user set and at least one covering element in a passenger moving installation at least partially covered by the covering element, includes determining the height of the user set in a monitoring area via a safety system, comparing the height of the user set to the height of a safety threshold, and triggering an event in the safety system if the user height exceeds the safety threshold.

A monitoring system for a passenger conveyor including: at least one acceleration sensor provided on a movable component of the passenger conveyor, wherein the moveable component moves in a closed loop path (P) when the passenger conveyor is in use; a fault detection sensor associated with the or each acceleration sensor and configured to provide data indicative of a fault in the moveable. The monitoring system includes a controller configured to: receive data from the or each acceleration sensor; monitor a gravity vector (V) of the or each acceleration sensor; determine a direction of travel of the or each acceleration sensor; determine a current location of the or each acceleration sensor based on the monitored gravity vector (V) and the determined direction of travel; detect a fault from the data received from the or each fault detection sensor; identify a location of the detected fault.

A handrail safety control device, a transportation system and a handrail safety control method. The handrail safety control device is provided for a transportation system having a handrail, the handrail including a body and a handrail belt, the handrail belt being driven under power to move relative to the body and forming an engaged state or a disengaged state with the body. The handrail safety control device includes: a contact portion disposed in a preset section of the handrail, the contact portion being in a first state or a second state respectively when the handrail belt in the preset section is in the engaged state or the disengaged state, wherein in the first state, the contact portion is in contact with the handrail belt, and in the second state, the contact portion is at least partially out of contact with the handrail belt; and a signal generation portion.

Disclosed are a safety apparatus for an escalator and an escalator. The safety apparatus is disposed on the skirt of the escalator, the safety apparatus includes a one-piece profile which comprises a rear wall, an upper portion at an upper end of the rear wall, and a lower portion at a lower end of the rear wall, wherein a plurality of sensor holes are provided on the rear wall, and the safety apparatus further comprises an illumination device, a skirt brush, and a plurality of photoelectric sensors, wherein the illumination device is disposed on the profile and emits illumination light toward the step side, wherein the skirt brush is disposed on the lower portion, and wherein the plurality of photoelectric sensors are mounted to be respectively aligned with the plurality of sensor holes so as to emit and/or receive optical signals through the plurality of sensor holes.