| 摘要 |
<p>A safety device (10) suitable for use in a fall arrest system, a body (13), a first attachment means (14) for attaching the safety device to a support structure, a drum (12), a safety line wound on the drum and having a free end, a second attachment means (17) for attaching a user personal safety equipment to the free end of the safety line, a speed sensitive clutch (15) connected to the drum, and a linear energy absorber (18) connecting the free end of the safety line to the user personal safety equipment, in which the speed sensitive clutch is adapted to respond to rotation of the drum in a direction tending to unwind the safety line from the drum and above a predetermined speed by engaging to resist further rotation of the drum in said direction relative to the body, and the linear energy absorber is adapted to respond, when the speed sensitive clutch is engaged, to an applied load along the safety line greater than a threshold value by deploying and absorbing energy so that the second attachment means moves away from the free end of the safety line.</p> |
