| 摘要 |
FIELD: traveling collapsible bridges. SUBSTANCE: unified bridge complex includes tracked and/or wheeled bridge layers, each being equipped with outriggers, mechanism for bridge mounting, bridge block having track roadway and comprising center and two ends blocks hinged to center block over upper power bands and fitted with mechanisms ensuring their collapsing-laying out on center block and closure of butt joints of lower power bands. Salient feature of invention lies in that roadway of bridge blocks is solid, collapsible expanders with members ensuring their stability are arranged over edges. Lower part of bridge block has recess in which grooves there is mounted for movement on rollers and fixing mechanism for bridge mounting coming in the form of mounting lever provided with eyes through which immobile cradle located in front part of bridge layer is hinged to chassis and mounting hydraulic cylinder. End of mounting lever carries fixture securing its closure with similar fixture on rear end of chassis of bridge layer. Sides of bridge layer are equipped with shields-beds on fasteners, outriggers together with mounting levers with eyes and cradle secure rigid connection of bridge layers in single jig. EFFECT: raised carrying capacity of bridge, improved size characteristics of bridge layers, exclusion of transportation vehicles from mix of complex and provision for employment of several bridge layers, wheeled and/or tracked, for assembly of large-span bridge. 2 cl, 23 dwg |
