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(1)Main feature
safety control system, reliable by using electric and hydraulic. Concentrating the control system with over-pressure protection, and with all position limit devicelight self weight, easy to assemble, especially for curve bridgespan-shift can be finished from 32m to 24m by moving the support legs, very conveniently(2)main technical parameters
No | Item | HZQ900 | |
1 | Lifting capacity | 900t | |
2 | Max girder dimension | ≤32.6x13.4x3m | |
3 | Girder-lifting style | Three-point balance | |
4 | Moving speed | 0-3m/min | |
5 | Moving style | Rail | |
6 | Trolley moving speed | 0-3m/min | |
7 | Trolley lifting speed | 0-0.5m/min | |
8 | Trolley max lifting height | 7m | |
9 | Transverse micro-set distance | ±200mm | |
10 | Micro-set speed | 0-1m/min | |
11 | Tackle lifting weight | 80t | |
12 | Min curve bridge radius | 2500m | |
13 | Power | 300kw | |
14 | Control style | Electro-hydraulic integration | |
15 | Out dimension | 73.9x 13.5x17.8 | |
16 | Total weight | 584t |
(3) main parts and their functions
Working condition | Back outrigger | Front outrigger | Auxiliary outrigger |
Movement of complete machine | travelling wheel of back outrigger runs on temporary track paved on bridge floor | remove anchoring between front outrigger and top of pier, hydro-cylinder inside recovers, break away from top of pier | hydro-cylinder jacks, bottom trolley runs on track of launching nose |
Bridge girder erection | cylinder in back outrigger jacks, travelling wheel breaks away from track, load-carrying wheel box presses on hinge seat with hard sleepers safeguard | Support the front section of abutment ahead, the front outrigger support on above breast wall of abutment | Attach to the launching nose |
Launching nose cross piers | cylinder in back outrigger jacks, travelling wheel breaks away from track, load-carrying wheel box presses on hinge seat with hard sleepers safeguard | Support the front section of abutment ahead, the front outrigger support on above breast wall of abutment | Cylinder recovers, the anti-buckle institution ascends launching nose in the air, bottom walking institution makes launching nose move longitudinally to finish crossing piers |
Shift span | travelling wheel of back outrigger runs on temporary track paved on bridge floor, the distance and position of front and back outrigger should be guaranteed on running | Upper part is equipped with shift roller driven by shifting span which can realize longitudinal shifting by track on girder cover plate. When front outrigger shifts span, auxiliary outrigger supports on launching nose; when launching nose shifts and changes span, front outrigger is on the top of pier or breast wall at the end of the girder to meet needs of shifting span | It is same with front outrigger |
transfer | Remove bottom connection girder, move it by lifting trolley | Remove parts under upper girder or tuck up folding section of outrigger | Remove bottom trolley |
(4) related certificates:
1. ISO9001:2008 certificates
2. 900t bridge construction crane manufacture license issued by State Bureau of Quality and Technical Supervision
(5) related pictures:
1. transport the precast girder
2. feed the precast girder to the rear part of the launching gantry:
3.one lifting trolley lifts the girder to move forward
4. two lifting trolleys lift the precast girder together
5. install girders
900t Bridge girder launching gantry for high speed railway