A fall-protection apparatus with a drum and a rotationally-activated braking device including at least one velocity-actuated pawl that is mounted on a pawl-support plate that is rotatable relative to the drum through a predetermined range between a first position and a second position. The pawl-support plate is rotatable relative to the drum from the first position to the second position upon the pawl-support plate experiencing a rotational acceleration that is above a predetermined threshold value of rotational acceleration. When the pawl-support plate is in the second position, the velocity-actuated pawl can be actuated by a rotational velocity that is lower than a rotational velocity required to actuate the pawl when the pawl-support plate is in the first position.

A device, system and method are used for hoisting and lowering a load. The device has a front plate that may be displaced to reveal a sheave. The device also has a friction accessory. The friction accessory is arranged to create friction between a rope and the device when a load is suspended from the device using the rope and where the device is secured to a support structure. The system may be prepared by an operator, having ascended to an elevated location, and further allows the operator to lower the load from the elevated location prior to descending.

A device, system and method are used for hoisting and lowering a load. The device has a front plate that may be displaced to reveal a sheave. The device also has a friction accessory. The friction accessory is arranged to create friction between a rope and the device when a load is suspended from the device using the rope and where the device is secured to a support structure. The system may be prepared by an operator, having ascended to an elevated location, and further allows the operator to lower the load from the elevated location prior to descending.

An external drum brake anti-falling device includes a carrier having an accommodating chamber and a main shaft crossingly arranged in the accommodating chamber for supporting a rotating drum to autorotate, wherein the rotating drum has a life belt coiled thereon, a brake unit arranged at an end thereof, and a drum brake module, which includes a base, mounted in the accommodating chamber, and a passive ring, mounted on the base. The base has a through hole, axially penetratingly provided thereon, so as to define a first ring surface disposed in a concentric circle manner with the main shaft. An outer diameter of the passive ring defines a second ring surface opposite to and closely fitting to the first ring surface and concentrically defines internally toothed ratchet teeth provided thereon for sequentially generating maximum static friction force and kinetic friction force between the first ring surface and the second ring surface when the life belt drives the brake unit to be engaged with the ratchet teeth, thereby effectively buffering the rotating drum and the life belt.

A lanyard comprises a wire-like element with two ends. A reel with a spring is provided with a rotor that is movable with respect to a stator in two directions of rotation. The wire-like element is fixed to the rotor to be wound or unwound. A clamp is fitted movable between a position where the clamp is at a distance from the textured contact area to allow rotation of the rotor and a position where the clamp is in contact with the textured contact area to prevent rotation of the rotor. The clamp is mounted movable with respect to the stator to move under the effect of its weight according to the incline of the stator with respect to the gravity vector to move the clamp between the two positions.

A pulley includes a securing head and a first flange. A first shaft extends from the first flange. A sheave is mounted rotatable around the first shaft in one direction of rotation only. A cam is mounted able to move away from or towards the sheave. A spring is fitted to exert a force moving the cam towards the sheave. A handle is mounted on the first flange to move the cam between the first and second positions.

Disclosed herein is an apparatus for facilitating controlled movement along a rope, in accordance with some embodiments. Accordingly, the apparatus comprises a body, a handle, a pulley assembly, and a link. Further, the apparatus is mountable using the handle for loading the rope. Further, the pulley assembly comprises a first fixed pulley, a second fixed pulley, and a movable pulley. Further, the first fixed pulley and the second fixed pulley is fixedly disposed in an interior space of the body and the movable pulley is movably disposed in the interior space. Further, the movable pulley disengaeably engages with the first fixed pulley and the second fixed pulley. Further, the link disengages the movable pulley in a part from the first fixed pulley and the second fixed pulley by moving the movable pulley from a first position to a second position based on receiving an amount of an input force.

Disclosed herein is an apparatus for facilitating controlled movement along a rope, in accordance with some embodiments. Accordingly, the apparatus comprises a body, a handle, a pulley assembly, and a link. Further, the apparatus is mountable using the handle for loading the rope. Further, the pulley assembly comprises a first fixed pulley, a second fixed pulley, and a movable pulley. Further, the first fixed pulley and the second fixed pulley is fixedly disposed in an interior space of the body and the movable pulley is movably disposed in the interior space. Further, the movable pulley disengaeably engages with the first fixed pulley and the second fixed pulley. Further, the link disengages the movable pulley in a part from the first fixed pulley and the second fixed pulley by moving the movable pulley from a first position to a second position based on receiving an amount of an input force.

A fall arrest device includes a braking device, a frame, and a rotating member connected to the frame. The rotating member includes a main body and a plurality of pawls which are pivotally connected to a mounting portion of the main body. Each of the pawls has an abutting portion, a pivot, and a body portion. The braking device has a plurality of abutted portions. When a rotation speed of the rotating member is greater than or equal to a predetermined rotation speed, the abutting portions abut against the abutted portions to stop a rotation of the rotating member. When the rotation speed of the rotating member is smaller than the predetermined rotation speed, the body portion of each of the pawls touches a periphery of the abutted portions and swings as an outer diameter of the abutted portions of the braking device changes.

The present invention discloses an intelligent life-saving system for a high-rise building and an electromechanical device for intelligent fast descent. The life-saving system includes a coverall with short-term high temperature resistance, cushioning and collision resistance, an oxygen-supplying helmet, a high-temperature resistant sling, and an electromechanical device for intelligent fast descent. The electromechanical device includes an intelligent detection and control device, a frame, a follow-up reel, a main shaft, and a fire-proofing and flame-retardant lifeline wound around the follow-up reel. The electromechanical device further includes a permanent magnet generator; brake mechanisms, where the intelligent detection and control device is configured to control the current of an active brake coil in real time based on the descent speed of the fire-proofing and flame-retardant lifeline to adjust a frictional resistance between dynamic brake pads and a stationary brake pad; and a forced braking manipulation.