Brake pulley device for emergency rescue and the practice of mountaineering and caving activities

摘要

The invention relates to a device for blocking a rope in the groove of a pulley, in only one winding direction. On a plate (3), a bearing (7) supports the axle (9) of articulation of a wedge (6), the rough face of which is held by a spring (16) in contact with a rope (17) wound onto a mobile pulley (1) on an axle (2) between a plate (3) and a flange located in front thereof. The assembly is suspended by an anchoring point (12). A strut (11) articulated on an axle (10), which can be locked in the upper position by a spring device (15), comes in front of a second suspension hole (13). In the upper position, the wedge (6) and the strut (11) allow the insertion of a rope (17) without free ends. This invention is more particularly intended for emergency rescue and for the practice of mountaineering and caving activities. IMAGE