Main components of bridge erecting machine
JQ900A bridge rack beam work across a hole of simply supported girder, by YL900 girder car tail beam erecting machine to feed beam, lifting trolley beam drag from air box girder beam, trimming location, bridging machine is driven by hydraulic tyre running, walking vertical over hole operation. You can set up 32m, 24m, 20m double line box girder, adapted to set the minimum curve radius of R5500m, to accommodate the maximum longitudinal slope of 20 m, rated lifting capacity of 900t.
The JQ900A type Longmen type double girder three leg bridge machine as an example, mainly composed of a machine arm, a lifting trolley, two lifting trolley, one column, column two, column three, hydraulic system, electrical system, diesel generator protection and safety monitoring system (part of Figure 1).
1, armThe machine arm is bearing girder erecting machine, double box girder structure, according to the stress condition of the machine arm and finite element calculation, each box girder design into cross-section form. The full length 66.0m, the box girder is high 3.0m, is divided into six sections; the center distance of the two main girders is 9m, and the high-strength bolt connection is adopted between the segments. After the disintegration of the segment can be transported by road or rail.
