Fall arrest device

A fall arrest device for blocking a rope when a relative speed between the rope and the device reaches a threshold value, the device comprising:

• a rope blocker for blocking the rope, said rope blocker including an activation lever;
• a trigger configured for triggering said activation lever of said rope blocker for activating said rope blocker for blocking said rope when said relative speed reaches said threshold value, wherein said trigger comprises
• a drive axis configured for being rotated by said rope upon relative movement between said rope and said fall arrest device, said drive axis carrying a centrifugal weight holder rigidly secured to said drive axis;
• and
• a release gear supported on said drive axis freely rotatable thereto, said release gear comprising an outer toothing and an inner toothing;
• wherein on said centrifugal weight holder there are held two centrifugal weights acting against a restoring force, each centrifugal weight comprising an actuator, said two centrifugal weights being movable between an inactive position and a trigger position for triggering said activation lever when said speed reaches said threshold value;
• wherein said centrifugal weight holder is arranged rotatably relative to said release gear, said outer toothing of said release gear being engagable by said actuator of said two centrifugal weights, when said two centrifugal weights are in said trigger position for triggering said activation lever for blocking said rope;
• wherein said two centrifugal weights are arranged pivotably about swivel axes each of which is located on said centrifugal weight holder, a spring being arranged between said two centrifugal weights exerting said restoring force for biasing said two centrifugal weights against each other, and wherein said two centrifugal weights upon rotation of said drive axis are movable from said inactive position to said trigger position for triggering said activation lever when said restoring force of said spring is overcome by a centrifugal force exerted on said two centrifugal weights upon reaching said threshold value.

A fall arrest device for blocking a rope when a relative speed between the rope and the device reaches a threshold value, the device comprising:

• a rope blocker for blocking the rope, said rope blocker including an activation lever;
• a trigger configured for triggering said activation lever of said rope blocker for activating said rope blocker for blocking said rope when said relative speed reaches said threshold value, wherein said trigger comprises
• a drive axis configured for being rotated by said rope upon relative movement between said rope and said fall arrest device, said drive axis carrying a centrifugal weight holder rigidly secured to said drive axis;
• and
• a release gear supported on said drive axis freely rotatable thereto, said release gear comprising an outer toothing and an inner toothing;
• wherein on said centrifugal weight holder there is held at least one centrifugal weight acting against a restoring force, each centrifugal weight comprising an actuator, said at least one centrifugal weight being movable between an inactive position and a trigger position for triggering said activation lever when said speed reaches said threshold value;
• wherein said centrifugal weight holder is arranged rotatably relative to said release gear, said outer toothing of said release gear being engagable by said actuator of said at least one centrifugal weight, when said at least one centrifugal weight is in said trigger position for triggering said activation lever for blocking said rope.