FIELD: transport.
SUBSTANCE: invention relates to flyover erection hoisting gear in the form of bridge tower crane. The hoisting gear includes flyover span with footway cantilevers, railway carts with wickets, tower with rigid girder pivotally installed on front end of span where semicircular retainer is fixed. The tower is held by guys fixed by rear end of the span. Along the axis of the span, only two wrenches with system of pulleys are installed, the rigid girder is provided with blocks along its axis and at ends, and on the footway cantilevers four wrenches with ropes are installed.
EFFECT: possibility of device turnover is excluded during operation, and simultaneous erection of flyover flat bearing and span using this device is achieved.
2 dwg
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