POMBO SAFETY DEVICE FOR BRAKING, ADJUSTING TENSION AND RETAINING A LOAD ON PULLEYS

摘要

Safety device for braking, adjusting tension and retaining a load on pulleys, which regulates or blocks the force transmitted by a line or cable (7) that passes therethrough by means of the actuation thereof when force ceases on the free end of the line or cable (7), be this in a load-lifting, -pulling or -tensioning manoeuvre. The operation thereof is determined by the rotation of the retention system (1), which has the same axis as the pulley (5), which comprises a wedge (12) fitted to the central sheave (8) of the pulley (5) and an adjustment counterwedge (4), which is placed at the perimeter of the central sheave (8), separated therefrom by the line. The pressure of the wedge (12) against the line (7) and the counterwedge (4) performs the action of locking the cable, which remains held and fastened, supporting the tension of the load or force exerted thereon.