| 摘要 |
A bottom anchor assembly (10) for a substantially vertically-oriented elonga te safety line (70) comprises safety line gripping means (20), safety line tensioning means (80) and a bracket (50). The gripping means (20) includes a manually adjustable clamp (20) and the tensioning means (80) includes a holl ow shaft (40) through which the safety line (70) passes. The hollow shaft (40) is externally screw-threaded and carries the load-setting means (80) on its scr ew- threaded portion (41). The load-setting means (80) is adapted to bear agains t the underside of the bracket (50) for adjusting the safety line tension to a predetermined value. The bracket (50) may have open jaws (51, 52) for receiving the hollow shaft (40) when it is already installed on the safety line (70). The ends of the open jaws (51, 52) may be provided with down-turn ed portions (53, 54) for preventing accidental removal of the load-setting mean s (80) from between the jaws (51, 52) when the system is adjusted to its predetermined tension.
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