Double Truss 160-900 Ton Launching Gantry

Product Description
Underslung double truss 160 ton launching gantry bridge girder equipment crane was developed and designed by our Design Department for high speed railway bridges construction (250 km/hour and 350 km/hour).
The feature of underslung double truss 160 ton launching gantry bridge girder equipment crane :
1. light weight
2. good stability
3. precise self positioning
4. precise beam positioning
5. easy operating
underslung double truss 160 ton launching gantry bridge girder equipment crane comes with Centralize control system, Multi speed Crane, Hydraulic powered Support, Mechanical powered Self Advancing system and spare-parts.

Construction Process
Huada Heavy Industry underslung double truss 160 ton launching gantry bridge girder equipment crane lifts, transport and position the Full Span Bridge in few simple steps. Huada Heavy Industry supply the complete range of equipment typically needed in below construction process: Special formwork with inner mound(hydraulically maneuvered), Lifting cranes for pre-cast yard, Lifting cranes for pre-cast bridge span, Multi-axle tyre trolly, FSM launcher.

Packing & Delivery
Packing & Delivery of underslung double truss 160 ton launching gantry bridge girder equipment crane
Packing:
1. Electric parts are packed by high quality plywood crate to reduce distortion.
2. Main beams, end beams and electric hoist are packed by plastic woven cloth to reduce abrasion during transporting.
Delivery:
1. Usually by bulk ship or by container after truncation.
2. Transport ways are based on reducing cost for you and keep the crane performance.

FAQ
1. What’s the information should I provide when inquiry about the underslung double truss 160 ton launching gantry bridge girder equipment crane ?
1.1 we need the Bridge Drawing; the Maximum longitudinal slope and the Maximum Transverse slope;
1.2 The Girder/beam drawing.
2. What are inspection standard for load test of underslung double truss 160 ton launching gantry bridge girder equipment crane ?
2.1 Dynamic load test
2.2 times rated load, main girder does not down deflection, all mechanisms work well, performance parameters meet the design demand, all limit switches and safety protection interlock devices are reliable, all spare parts does not have cracking and flexible connection, all motors and contactors are not overheat.
2.3 Static load test
2.4 times rated load, all mechanisms work well, the crane stops 20-30 min as trial load is lifted 10 cm high, then measure main girder down deflection(theodolite, ruler). Put down trial load to measure main girder upper camber, repeat 3 times, steel structure does not have permanent deformation.
3. How to make highway bridge concrete girders?
Highway Bridge concrete girders could be made by 4 methods:
3.1 Full span prefabrication
3.2 Segment girder prefabrication full span prefabrication,
3.3 Full span cast-in-place girder
3.4 Segment cast-in-situ
4. How about maintenance of underslung double truss 160 ton launching gantry bridge girder equipment crane?
4.1 Lubricating: Working performance and service life of all mechanisms of crane depend on lubricating to a big extent.
4.2 Steel wire rope: Fracture of wire has to be specially noticed. A new steel wire rope has to be changed immediately with the condition of broken wire, broken strands and wear loss to scrapping standard.
4.3 Spreader: The spreader has to be checked regularly
4.4 Pulley block: Mainly check rope race wearing condition, check whether wheel flange is cracked and whether pulley could get stuck in the axle or not
4.5 Wheels: Regularly check wheel flange and tread, a new wheel has to be immediately replaced as crack part or wearing in wheel flange reaches 10% of wheel thickness; Re-polishing has to be done as diameters between two driving wheels on tread differs more than D/600, or there are severe scar on the tread
4.6 Brake: Check one time per shift; The brake should be in accurate movement, and pins do not allow to be stuck. Brake shoes shall fit brake wheels correctly; the brake shoes interval shall be equal to open them.