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Bridge girder launcher, 1.900t lifting capacity, 2.Reasonable design, 3.Reliable quality, 4.For high speed railway - details see: https://www.machineto.com/for-high-speed-railway-larger-image-bridge-girder-launcher-10102109

For high speed railway larger image Bridge girder launcher

(1)Main feature

1. safety control system, reliable by using electric and hydraulic. Concentrating the control system with over-pressure protection, and with all position limit device
2. light self weight, easy to assemble, especially for curve bridge
3. span-shift can be finished from 32m to 24m by moving the support legs, very conveniently

(2) construction sequences

step 1: the transporter carry precast girder to launching gantry

step 2: the trolley lift the girder

step 3: the precast girder is totally lifted by two trolley

step 4: install girder

(3)Function table for outriggers of bridge girder launcher under working condition

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