| 摘要 |
FIELD: construction. ^ SUBSTANCE: sections are installed on bridge launcher in transport position in the form of two-tier packet. In the lower tier one of end sections is arranged as joined with coupling frame, and in the upper tier there are middle and second end sections arranged as oriented one after another. Device for opening sections in track is arranged in the form of two hinged level mechanisms that connect middle and end sections in zone of intersectional hinged joints. Each mechanism is equipped with double-arm lever, hingedly installed in the middle section, and leash hingedly installed at the end section. Double-arm lever is joined by one arm to leash, providing for specified trajectory of bridge section rotation in process of its opening, and by its second arm - with hydraulic cylinder common for both lever mechanisms and installed inside middle section and used as power drive for turning double-arm levers as sections open in process of assault bridge installation. ^ EFFECT: tracks of assault bridge are arranged with extended end sections and short middle section equal to each other. ^ 4 cl, 7 dwg |
