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900 ton double girder truss type overhead launching gantry crane

900 ton double girder truss type overhead launching gantry crane
Supplier:
Manufacturer
Crane Industrial Park, Xinxiang City, Henan Province, 453000, China
Origin:China
Warranty:1 year
Category:Gantry Cranes
Product Description
The 900 ton double girder truss type overhead launching gantry crane is used to construct prefabricated spans up to 60m long. It is designed and fabricated in order to ensure high performances, efficiency, safety, flexibility and multiple successive utilizations.
1. Independent supports relocation system.
2. Independent stressing platform handling system.
3. Service overhead crane.
4. Radio remote controls for all opera tions.
5. Radio remote controlled spreader beam for segment positioning.

Safety Features
Safety is the most important issue for cranes. To ensure the safety, the following safety devices are equiped in 900 ton double girder truss type overhead launching gantry crane.
1. Crane traveling limit switch.
2. Overload protection device.
3. Lifting height limit device.
4. Voltage lower protection function .
5. Phase sequence protection function.
6. Emergency stop function.
7. Rain cover for outside hoist, driving units, electric cubicle.
8. Warnings indicator : flashing nights and warning sounds.
9. Wire-less infra-detector for anti-collusion.

FAQ
1. What’s the information should I provide when inquiry about the 900 ton double girder truss type overhead launching gantry crane?
we need the Bridge Drawing, the Maximum longitudinal slope and the Maximum Transverse slope.
The Girder/beam drawing.

2. How many kinds of construction methods for 900 ton double girder truss type overhead launching gantry crane?
1. Overhead segmental.
2. underslung segmental.
3. balanced cantilever erection segmental launching gantry.
4. full span.

3. What are inspection standard for load test of 900 ton double girder truss type overhead launching gantry crane?
Dynamic load test
1.1 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.
Static load test
1.25 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.

4. How to make highway bridge concrete girders?
Highway Bridge concrete girders could be made by 4 methods:
Full span prefabrication.
Segment girder prefabrication.
Full span cast-in-place girder.
Segment cast-in-situ.

5. How about maintenance of 900 ton double girder truss type overhead launching gantry crane?
a. Lubricating. b. Steel wire rope. c. Spreader. d. Pulley block. e. Wheels. f. Brake.
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