Segmental launching bridge construction gantry crane is used in the construction of precast segmental viaducts for span-by-span and balanced cantilever methods. There are various types of launching gantries available, the choice of which depends on the geometrical site and construction sequence adopted by the designer.

Segment launching bridge construction gantry crane with precast segment bridge construction method is widely used for both highway and railway bridges. The precast segmental girder is installed as a set along the entire length of the span, and then prestress is introduced into the structure through external tendons, and the span-by-span method is faster to construct and requires fewer workers than the balanced cantilever method of erection. It is designed and fabricated to ensure high performance, efficiency, safety, flexibility and multiple successive uses.

• Double box beam with steel legs moving through the ground beam as crane travelling system
• The camber of main beam will be designed as Span*1-1.4/1000
• Steel Material: Q235 or Q345
• Shot-blasting Sa2.5 for main girder and supporting beam
• Epoxy zinc rich high quality painting
• Electrification and outfitting
• Conductor power supply: cable reel or bus bar
• Frequency conversion, double speed, single speed. All hoist and crane movements are independent and can be run simultaneously different design due to meet crane applications
• Whole layout provides good protection against special working environment. Such as gas workshop,plants, warehouses etc.

• Welding Process. We perform specialprocess control procedures.
• Main girder camber control. The main girder web technology is used in prefabricated camber blanking process.
• Mechanical processing. We have a machining center.
• Main girder production. Use automatic hydraulic pressure of the main girder assembly machine group.
• Crane assembly. We have three assembly lines crane bridge.
• Pre-processor painting. We have two whole girder or steel shot blasting treatment and coating workshop production line.

• Crane traveling limit switch.
• Weight overload protection device.
•  Lifting height limit device.
• Voltage lower protection function.
• Phase sequence protection function.
• Emergency stop function.
• Rain cover for outside hoist, driving units, electric cubicle.
• Warning indicator: flashing lights and warning sounds.
• Wireless infra-detector for anti-collusion.

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