Technical Specification of HZQY500 Bridge Girder Launcher Integrating Carrying and Erecting

1. HZQY500 bridge girder launcher integrating carrying and erecting, short for HZQY500, is composed of main girder, front and back overhead lifting trolley, front outrigger, middle outrigger, front wheeled vehicle, back wheeled vehicle, winch system, hydraulic system, electrical system and etc. It is widely used for lifting, transporting and erecting 500t box girder for hing-speed railway and passenger dedicated line. 
 
 
2. HZQY500 gets girder from prefabrication yard and then travels to the non erected span. 
 
3. Every working condition is safe and stable, including carrying girder, front and back wheeled vehicles rise up as a support, hydraulic drive, launching, traveling, braking and etc.
 
4. Four points to finish lifting and three points to keep balance, the erect method will promise the balance and stability of prefabricated girders.
 
5. Four winches are arranged at front and back of the end of main beam.
 
6. Front and back outriggers support main beam simply to help workers make sure clear erecting conditions.
 
7. Unique triangle structure can guarantee the stability of main girder when HZQY500 bridge girder launcher is passing from one pier to another. There is no need to be anchored at the top of piers. 
 
8. Middle outriggers will support on the top of bloack of the span to be erected to help realize second rearrange of front outriggers when HZQY500 is displacing and passing through from one pier to another.
 
9. The adjusting distance for flexible guide pillar of front outrigger is ±600mm. Stroke of screw adjustment for diagonal bar is 200mm. Equipped with non-fixed knots, HZQY500 bridge girder launcher is suit for erecting precast girder with 2% slope. The lower segment of front outrigger can rise up in spiral method, which is convenient to finish non erected girders and pass cast-in-place girders easily.


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