FIELD: rescue equipment, particularly for emergency lowering people or loads from tall objects.
SUBSTANCE: device has base with load fastening member and locking means for load lowering speed regulation secured to the base and cooperating with flexible member. The locking means is formed as rest and cam rotating around axis and having rotation lever connected thereto. Rest and cam are opposite one to another. Cam is provided with groove facing the rest. Device is also provided with limiter which prevents flexible member slipping during lowering operation and with rotary fixer having tooth installed to contact with arch-shaped groove. The groove is arranged in rotary fixer plane and bounded with rest. Angle of arch-shaped groove inclination is not less than cam stroke angle.
EFFECT: increased safety of lowering operation during device usage.
9 cl, 6 dwg
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|---|---|---|---|
| LIFTING AND LOWERING APPARATUS | 1998 |
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|
RU2383844C1 |
