Archive for "FAQ"

Why the crane is called honeycomb girder launching gantry?

FAQ 十 07, 2013 No Comments

Honeycomb girder launching gantry developed by ZZHZ is a new type bridge construction crane in crane fields. It is unique and practical.

main girder of launching girder

main girder of launching gantry

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What are safety rules to disassemble the launching gantry?

FAQ 九 05, 2013 No Comments

After the launching gantry finishes installing precast girders, it needs to work in another worksite. With heavy weight, large volume and long distance, it is necessary to disassemble the launching gantry for a convenient transportation. Below are some rules that shall be followed:

assembly of main girder

assembly of main girder

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How to test steel plates for launching gantry?

FAQ 九 04, 2013 No Comments

Launching gantry main girders usually use Q235 and Q345 steel plates, which bear main loads. So it is vital to purchase high quality steel plates.

workshop

workshop

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What do you know about packing on launching girder?

FAQ 九 02, 2013 No Comments

Launching girder is large bridge construction equipment which is also called overhead launching gantry, launching gantry, bridge girder launcher, bridge construction/ building crane, usually it uses full span method to install bridge girders, then move to next span.

main girder of launching girder

main girder of launching girder

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How to do anti-corrosion coating of launching gantry?

FAQ 八 31, 2013 No Comments

Anti-corrosion coating is quite important for normal operation and good appearance of launching gantry.

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How to maintain the electric winch?

FAQ 八 28, 2013 No Comments

Electric winch is made up of motor, coupling, brake, gearbox and winding drum, which are installed in the winch frame. Under a condition with high lifting height, large lifting loads and frequent working steps, the electric winch has a good speed control performance which realizes fast lowering of empty hook. For assembly or other sensitive operation, a lower speed can be realized.

trolley

trolley

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What are features of honeycomb type launching girder?

FAQ 八 27, 2013 No Comments

Honeycomb type launching girder made by our company can construct straight bridge as well as bridge with certain gradient and curvature;

honeycomb type launching girder

honeycomb type launching girder

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What technical requirements shall overload limiter have?

FAQ 八 26, 2013 No Comments

A large part of crane accidents are caused by lifting overload objects. To prevent the accidents, overload limiter must be installed on the crane before leaving the factory. Below are technical requirements on overload limiter:

bridge crane

bridge crane

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What are bridge construction crane sales of ZZHZ?

FAQ 八 20, 2013 No Comments

ZZHZ is China leading manufacturer of bridge construction cranes for highway and railway. Below are part of bridge construction cranes sold overseas.

Singapore bridge construction crane

Singapore bridge construction crane

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What are functions of sensor of launching gantry?

FAQ 八 14, 2013 No Comments

Launching gantry is common bridge construction equipment, whose main function is to lift, move and put down precast girders in the fixed position.

launching gantry

launching gantry

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