What is single girder launching gantry?
As one of bridge construction machinery, the single girder launching gantry is set with one box girder suspension arm extending forward and one folded column (made up of left and right support legs)at its front.
How to lift and lower the precast girders for launching gantry?
What is the history of honeycomb girder?
Infrastructure construction projects in the world are on the rising at late 20th century, all kinds of bridges appear. And gantry crane and launching gantry provides convenience for smooth construction.
Welcome to visit our booth E2557 in BICES 2015
ZZHZ will take part in Beijing International Construction Machinery Exhibition & Seminar held at September 21-25, 2015 in Beijing, China. Welcome to visit our booth E2557.
How about connecting bolts of overhead launching girder?
As all parts of overhead launching girder are produced, they need to be connected together by connecting bolts as below:
CONNECTING PARTS OF MAIN GIRDER
What should you do before using one launching girder?
When a bridge will be constructed, one launching girder comes out in my mind natually, which may be professional sense.
What are common bridge construction methods?
About honeycomb girder made by ZZHZ
It is in the worksite operation that we realize a launching gantry between truss girder and box girder is needed, it is better if we can combine high stiffness of box girder and high wind resistance of truss girder, so we deign the honeycomb girder. The honeycomb hole allows wind to go through, and the web plate ensures a higher stiffness, as for why it is a honeycomb hole, it is a kind of craftmanship and it does not cost much.
Metal processing equipments and heat treatment equipments in ZZHZ?
Main metal processing equipments
| No | Item | Model | Quantity | Main technical specification |
| 1 | Center lathe | C61125A | 1 | φ1250×8000 |
| 2 | vertical type gear hobbing machine | ZS7Z25 | 1 | φ1 |
| 3 | Boring machine | T6216 | 1 | φ160×4000 |
| 4 | Structural steel sawing machine | H650HD | 1 | Max cutting capacityφ300mm |
Heat treatment equipment
| No | Item | Model | Quantity | Main technical specification |
| 1 | Heat treatment equipment | 1 | Table model heat treatment | |
| 2 | Weld joint heat treatment | R-500 | 2 | Track heater |
