underslung launching girder is described also by other terms including beam launching, girder launcher, bridge building crane,and bridge-building machine, this type launching crane is a special-purpose mobile gantry crane used in bridge construction. It is used to install precast box girders in highway and high-speed rail bridge construction projects. The SLJ908 is a machine that can carry, lift, and place sections of track, connecting pillars by heavy stone blocks. After pillars are in place and construction has been carried out up to a certain pillar, the machine advances over the gap to the next pillar and drops another block of track into place, spanning the gap. The machine then backs up to collect another block, moves forward, and repeats the process.
The main girder of bridge building machine in china adopts triangular truss structure, and the length of each beam is generally less than 12 meters. The main beam of girder launcher machine is connected by a pin shaft so that it has flexible assembly and convenient transportation. Hengyuan Group is an experienced bridge girder erection machine manufacturer, and welcome to contact us at any time if interested.
Features and Advantages:
Bridge beam launching girder can accomplish the build of girders with carrying and erection at the same time.
The machine can erect 4 pieces of girders with the other two cranes one day, reducing construction cycle.
The machine can continue to work just exchanging the front rear legs, no need extra assembly.
Unique honeycomb-girder structure, low deflection and high stiffness
Put boundary beam in place one time when it has a side load. without hanging landing leg in the air, safe and reliable.
If the landing leg front and back is changed a little, it can erect the bridge in a reverse direction
The error of bridge girder erection is less than 5mm.
Unique pin connection and easy installation.
A-type fracture surface, continuous girder with low center of gravity, convenient and reliable.
Overload protection: If the material is over the capacity, the crane will give a sharp warning for protection itself.
Emergency brake: If the operation staff encounter some emergency situation, we could start the emergency brake system to protection the related treasure.
Control Method: Room control or remote control to avoid any injure to the operation staff
Main lifting motor: with thermal protection and currency protection.
Product Parameter:
| Max Span |
50m |
40m |
35m |
30m |
| Hoist Capacity |
160t |
100t |
80t |
60t |
| Lifting Speed of Trolley |
0.8m/min |
0.8m/min |
0.8m/min |
0.8m/min |
| Moving Sspeed of Trolley |
4.5m/min |
4.5m/min |
4.5m/min |
4.5m/min |
| Moving Speed of Crane |
2.7m/min |
2.7m/min |
2.7m/min |
2.7m/min |
| Loading Capacity |
80t |
50t |
40t |
30t |
| The Speed of Heavy Load |
4-8m/min |
4-8m/min |
4-8m/min |
4-8m/min |
| The Speed of Empty Load |
18m/min |
18m/min |
18m/min |
18m/min |
| Max Angle of Inclined Bridge |
45° |
45° |
45° |
45° |
Schematic Drawing:
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