Launching Gantry for Highspeed Railway

launching gantry
Application range and usehide/show
The box type double girder launching gantry is specially designed for highspeed railway.  It is mainly used for lifting and installing box type concrete girder in bridge construction for highspeed railway. With full span installation method, the launching gantry can lift and install one concrete girder in a single span every one time.
Main features and advantageshide/show
◆ The launching gantry is a special hoist equipment used for lifting the concrete girder on the high-speed railway construction. It can lift 900t precast concrete girder.
◆ It is very convenient to accomplish the span-shifting from 32m to 24m when move the legs.
Main Parametershide/show
Item/ Data /Model HZQ900
Maxi Span 24-32m
Hoist Capacity 960t
Lifting Speed of Trolley 0-1m/min
Moving Speed of Trolley 0-5m/min
Moving Speed of Crane 0-3m/min
Power Required 300kw
Overall Dimensions 65.3m×17.8m×11.7m
Total Weight 510t
The design basis of producthide/show
We design the launching gantry according to the rules of the newest machinery and crane in China, the rules are following:
《Cranes–Test code and procedures》 GB5905
《Safety regulations for hoisting machinery》 GB6067
《Code for design of steel structures》 GB50017
《Safety technology specification for special equipment》 TSG Q7002、Q0002
《Code for construction and acceptance of steel structure》GB50205
《Standard for quality inspection and evaluation of steel structure engineering》 GB50221
《Weld Outer Dimensions for Steel Construction》GB10854
《Code for construction and acceptance of electric equipment installation engineering》 GB232
《General technical requirements of assembly》 JB/ZQ400.9
《Mechanical properties of fasteners》 GB3098
Main requirements of designhide/show
◆ Technical index;
Safety factor 1.5
Using grade: U3
Load state: moderate
Working grade of the whole machine: A3
Working grade of the mechanism:M4
Working condition and requirements of design etc.
◆ Calculation analysis and check-calculation of the whole structure According to technology condition of design of crane, we confirm the construction condition, and then calculate and analyze the strength, stiffness and stability.
After the classical calculation, we start the calculating work of design of steel structure, and adopt the finite element analysis, the load applied to models respectively, and then calculating and analyzing beam element and plate element. Finally, the authoritative department will check and calculate again.
Main mechanical manufacturing technologyhide/show
quality control of manufacturing processhide/show
Tracing data and leaving factory data of producthide/show
The method and steps of installationhide/show
Checking methods after installation of producthide/show
operating requirements and attentionhide/show
Time and item of maintenancehide/show
Disassembly and steps of transferring sitehide/show