Description:

300ton segmental launching gantry crane for bridge construction is generally used in the erection of the Highway Bridge and Subway Bridge, using the precast segmental pre-stress concrete box beam (PC beam) assembly.

The main feature of 300ton segmental launching gantry crane is the high efficiency of construction and self-traveling. Generally it is composed of the main beam, leg and winch trolley, the main girder is used for bearing, the leg is to execute machine transverse moving, longitudinal moving, leveling, support, cross span, cross scale and other functions, and the winch trolley used for lifting the precast girder.

Our advantages:
A. More than 50 R&D personnels with advanced Science and technology.
B. More than 400 sets advanced Production processing equipment and inspection equipment.
C. Independent intellectual property rights to develop energy saving bridge cranes, gantry cranes, and electric hoist.
D. Obtain ISO 9001 certificate and more than 10 series of patent certificates.
E. Efficient service and competitive products.
F. Export more than 100 countries.

Packing 
1. Electric and hydraulic parts are packed by high quality plywood crate to reduce distortion in conveying; 
2. Main beams, end beams are packed by plastic woven cloth. It can reduce abrasion when transport.

 

Delivery 
1. If the size of 300ton segmental launching gantry crane are suitable for container ship, usually by container;
2. If the size is too big, usually by bulk ship or by container after disassembly.

Transport ways are based on reducing cost for you and keep the crane performance.

 

 

Transportation 
Generally 35 days to 50 days to destination port. 

Safety Feature:

Huada launching gantry (LG) Series are designed for safety. Winches are equipped with double breaking system. Upon request we provide Triple braking system. 

 

Emergency stop button, Limit switch, sensor are located at designated location. Lighting and spare-parts are part of the items coming with 300ton segmental launching gantry crane.

FAQ:
1. What's the information should I provide when inquiry about the 300ton segmental launching gantry crane?

a. we need the Bridge Drawing; the Maximum longitudinal slope and the Maximum Transverse slope;
b. The Girder/beam drawing; 

2. How many Personnel and equipment to assemble launching gantry in the worksite we need?
Personnel: 8 to 10 workers equipment
Truck crane > 50 t : 2 sets
19.5 steel wire rope 8 m: 4 ropes
Sleepers: several
Electric welding machine: 1 set
Oxygen, acetylene: 1 set
Hammer(12 pound and 8 pound): 1 set for each
Wrench and pincher: several
Gradienter: 1 set

3. What are inspection standard for load test of 300ton segmental launching gantry crane?
a. 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 overhead.
b. Static load test
1.25 times rated load, all mechanisms work well, the crane stops 20 min to 30 min as trial load is lifted 10cm 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?
a. Full span prefabrication.
b. Segment girder prefabrication.
c. Full span cast in place girder.
d. Segment cast in situ.

5. How about maintenance of 300ton segmental launching gantry crane?
a. Lubricating.  b. Steel wire rope.  c. Spreader  d. Pulley block.  e. Wheels.  f. Brake.