| 摘要 |
FIELD: fire fighting facilities. ^ SUBSTANCE: invention relates to equipment designed for rescue operations and fire fighting in high-rise buildings. Telescopic boom, extension ladder and foam conduits are interconnected for synchronous extending-retracting. Telescopic boom is made in form of set of coaxially arranged and nested airtight tubular sections, extreme sections being made with bottom pointed outwards, and ends of each section being provided with support rolls and pneumatic seals in places of connection of sections. Telescopic boom sections pneumatic seals are spring-loaded. Sections of telescopic boom are connected by cable pulley block. Extension ladder is furnished with foldable guard in form of telescopic sections arranged over U-shaped outline secured for turning along extension ladder. Foam conduit is telescopic and it consists of hydraulically tight sections with hydraulic seals, section are arranged coaxially, one nested in the other. ^ EFFECT: reduced time taken for extending-retracting of telescopic boom, provision of rigidity of construction, increased load-lifting capacity. ^ 6 cl, 7 dwg
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