| 摘要 |
FIELD: hydrology and stream gaging structures on streams in stable beds of up to 30 m width with water oscillation amplitude of up to 6 m, may be used to take stream gaging measures. SUBSTANCE: device has framework 1 of the bridge with sliding gangways 2 hung from bearing cables 3, waterside abutments 4 with stands 5, abutment foundations 6, anchor tensioning units 7 and framework ascending and descending mechanism. The latter includes hoist 8 with disc dividing barrel into two parts and manual drive 11, cables 12, one ends of which are secured to one band above the abutments in points 13, another ends 14 of the cables are secured to another band from hoist barrel 8, immovable blocks 15 secured by upper part of the abutment, guides on stands 5 to move rollers of horizontal axles along, and rollers 19 put on horizontal axles and used to ascend and descend horizontal axles and interconnected framework 1. EFFECT: improved technological efficiency, enhanced reliability, decreased materials consumption, decreased labour consumption in installing the framework of the bridge. 3 dwg |
