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Front supporting leg rollover protection device of bridge girder erection machine
A front supporting leg rollover protection device of a bridge girder erection machine is characterized by comprising hinge bases and L-shaped rollover protection beams, wherein the hinge bases and the L-shaped rollover protection beams are fixedly connected to the two ends of a front supporting leg upper transverse beam symmetrically, and front supporting leg supporting roller boxes are mounted at the hinge bases at the corresponding ends in a hinged manner; the bottom faces of the two ends of the front supporting leg upper transverse beam are combined with supporting leg inner sleeve columns in a fixed connection manner, and the supporting leg inner sleeve columns are sleeved with the supporting leg outer sleeve columns; a supporting leg lower transverse beam is connected between the two supporting leg outer sleeve columns; each front supporting leg supporting roller box is composed of two supporting roller box bodies, and the two supporting roller box bodies are hinged to a middle connecting beam through hinge pins; a hanging hinge base is welded to the lower face of the middle connecting beam, and the lower face of the hanging hinge base is hinged to a connecting base; and the bottom face of the connecting base is provided with a rollover protection transverse beam in a fixed connection manner, and the rollover protection transverse beam is located below the L-shaped rollover protection beams. In the construction process of hole passing or beam erecting, due to accidental longitudinal force, the front-and-back inclining of a front supporting leg is too large, and the problem of longitudinal overturning of the bridge girder erection machine is solved.
Front supporting leg rollover protection device of bridge girder erection machine
A front supporting leg rollover protection device of a bridge girder erection machine is characterized by comprising hinge bases and L-shaped rollover protection beams, wherein the hinge bases and the L-shaped rollover protection beams are fixedly connected to the two ends of a front supporting leg upper transverse beam symmetrically, and front supporting leg supporting roller boxes are mounted at the hinge bases at the corresponding ends in a hinged manner; the bottom faces of the two ends of the front supporting leg upper transverse beam are combined with supporting leg inner sleeve columns in a fixed connection manner, and the supporting leg inner sleeve columns are sleeved with the supporting leg outer sleeve columns; a supporting leg lower transverse beam is connected between the two supporting leg outer sleeve columns; each front supporting leg supporting roller box is composed of two supporting roller box bodies, and the two supporting roller box bodies are hinged to a middle connecting beam through hinge pins; a hanging hinge base is welded to the lower face of the middle connecting beam, and the lower face of the hanging hinge base is hinged to a connecting base; and the bottom face of the connecting base is provided with a rollover protection transverse beam in a fixed connection manner, and the rollover protection transverse beam is located below the L-shaped rollover protection beams. In the construction process of hole passing or beam erecting, due to accidental longitudinal force, the front-and-back inclining of a front supporting leg is too large, and the problem of longitudinal overturning of the bridge girder erection machine is solved.
Front supporting leg rollover protection device of bridge girder erection machine
DAI YU (author) / ZHANG ZHIHUA (author) / CHEN DELI (author) / LIN JIANQING (author) / LIU JIAN (author) / QU CHANGLI (author) / HAN PENGFEI (author) / SUN LONG (author) / LI XIN EN (author) / CAI YUTING (author)
2015-12-16
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
Brücken
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