| 摘要 |
A self-locking descender for controlling the movement of a load on a rope, comprising rope guiding means (200) comprising a rotatable head (201) with a clamping element (202) for clamping the rope (100) to a resistive element (203), wherein the rope guiding means (200) further comprise a pulley (204), around which the rope (100) is to be guided, the pulley (204) movable between a first position and a second position, wherein the pulley (204) is coupled with the rotatable head (201) by a coupling mechanism (300), such that when the descender is loaded, when the pulley (204) is in the first position, the clamping element (202) of the rotatable head (201) clamps the rope (100) towards the resistive element (203) so that the rope movement is blocked, and when the pulley (204) is in the second position, the clamping element (202) of the rotatable head (201) is distanced from the resistive element (203) so that the rope (100) movement is enabled, wherein the pulley (204) is movable from the first position to the second position by pulling the free end (102) of the rope (100), and when the free end (102) of the rope (100) is not pulled, the pulley (204) is automatically movable from the second position to the first position due to the friction force between the rotatable head (201) and the rope (100).
|
