Application: Normally, this crane is for 400-900t weight super large bridge beam; mainly applied in high speed railway project, sea cross bridge project, etc. This bridge erector crane is composed of main beam, cantilever, bottom guide beam, front&rear legs, auxiliary leg, beam-lifting overhead crane, jib crane and electro-hydraulic system. The whole structure is of box type, which is suitable to erect various bridges, the skew bridge, curved bridge, cross bridge and long bridge, etc. Normally, This bridge launcher crane work with beam hoisting gantry crane, and beam transporter---integrating the work of bridge beam making, transporting, and launching. Technical parameters for reference: Model JQJ450 JQJ900 Lifting capacity 450T 900T Suitable beam 20-32M span Suitable long slope 2%2% Suitable curve radius 600m 100m Lifting height 5.6m 7.2m Work efficiency 6pcs/day 4pcs/day Max Wind pressue at work Level 6 Level 6 Max Wind pressue at non-work Level 11 Level 11 Lifting speed 0-0.5m/min 0-0.5m/min Traveling speed 0-1m/min 0-0.5m/min Crane weight 343t 525t Overall size 69*8.9*9m 59.3*17.1*12.1m Installed Power 176kw 300kw Power source diesel generator diesel generator Note: 1, All the values in this table are just a reference for you. 2, We do customized design according to customer request.