ZZHZ Bridge Girder Erection Machine Bridge Girder Launcher for High Speed Railway
1. Application Range of Bridge Girder Erection Machine Bridge Girder Launcher for High Speed Railway
The type of Bridge Girder Erection Machine is designed for highway and railway. According to the situation of present railway with less sub grade, more bridges and tunnels which connected too closely, our company design and manufacture the new box-girder bridge girder launcher with double girder. It is mainly used for hoisting (lifting) of concrete girder in bridge construction (bridge building) of general railway and highway.
2. Main Features and Advantages of Bridge Girder Erection Machine Bridge Girder Launcher for High Speed Railwaya.
The machine is a special hoist equipment used for lifting the concrete girder on the high-speed railway construction. It can lift 900t precast concrete girder.b. It is very convenient to accomplish the span-shifting from 32m to 24m when move the legs.
3. Main mechanical manufacturing technology of Bridge Girder Erection Machine for High Speed Railway
There are many mechanical manufacturing (machinery-building) technologies for Bridge Girder Erection Machine for High Speed Railway; the rules of management are following:
a. Firstly, the technology department reviews the drawing from manufacturability.
b. Drawing up the technology guide book and making procedure qualification.
c. Making welding procedure card, mechanical manufacturing card, assembly process, camber drawing of box girder according to drawing , rules and criterion ; emphasizing the size of welding angle, geometry size and requirements of assembly etc.
d. Designing the assembly technology clamp according to the requirements of drawing.
e. Making the finishing time of manufacture and patrolling card according to the requirements of drawing; controlling the quality of manufacture strictly.
4. The installation method and steps of Bridge Girder Erection Machine for High Speed Railway
The Bridge Girder Erection Machine for High Speed Railway is the heavy duty hoisting equipment which requires very high safety. A little negligence maybe causes serious accident, therefore, the installation of Bridge Girder Erection Machine for High Speed Railway must be directed or installed by professional works, and the steps are following:a. surveying positioningb. paving railsc. assemble two sides main girder symmetrically.d. installing front and rear connecting framee. installing front, middle and rear legsf. installing lifting trolley and auxiliary trolleyg. hydraulic system, electrical system, operating platform and plug in powerh. test run and commissioning.
5. Operating requirements and attention of Bridge Girder Erection Machine for High Speed Railway
a. Adjusting the height of transverse rails of front legs and middle legs when erecting girder or moving from one pier to keep main girder’s longitudinal slope≤0.5%，transverse slope≤0.5%.
b. The normal working wind speed should less than 6 grade when bridge girder launcher works in the open air ; when the wind exceed 6 grade, the bridge girder launcher shouldn’t moving from one pier to next pier, and components should be locked; the machine can’t work in thunderstorm day and must cut off power.
c. check the steel rope is broken or not, the circuitry leaks electricity or not, the brake is reliable or not, and after the reducers get enough lubricating oil and the oil lubricate the open gears, the machine start to work; the safe circle of steel rope on the drum shouldn’t less than 3;checking the surface and fixed parts after every shift of steel rope and making a specific check every 7～11 days;
d. the brake system of winch is allowed to start again after it checked;
e. the lifting ,longitudinal traveling and transverse traveling shouldn’t work together; the speed of lifting and translational velocity should be slowly to avoid leaning and side tumbling;
f. the goods are prohibited to throw out from bridge girder launcher strictly; it is prohibited to lift goods to pass over head strictly；it is prohibited to lift workers by hook or goods strictly；the inflammable goods are prohibited to put on the launching crane strictly;
g. After the legs move to their places, plug the safe pin to prevent the hydraulic cylinder from bearing force for a long time;
h. When the tubes of components are fault, the operator should cut off power immediately, and it is checked and repaired by the professional technician; the operator shouldn’t disassemble privately; when checking and repairing the machine , the technician must cut off the power.
ZZHZ Introduction:
Established in 1992, Zhengzhou Huazhong Construction Machinery Co., Ltd., (short for ZZHZ) specializes in all kinds of construction and hoisting machinery, such as gantry crane, overhead crane, bridge girder launcher, concrete batch plant, concrete spraying system, backhoe loader and etc. Zhengzhou Huazhong Construction Machinery Co.,Ltd is located in Zhengzhou city, Henan province, China, which covers an area of about 70,000 square meters with 3 factories in total. Until now, we have 650 employees and 86 engineers.
ZZHZ Main Products:
Gantry Crane, Overhead Crane, Bridge Girder Launcher, Girder Carrying Vehicle, Concrete Batching Plant, Backhoe Loader, Concrete Spraying System
Business Manager: Amy Zheng
Website: zzhz.com
Email: zzhz114@gmail.com
QQ: 2778675100
Skype: amy.jones966
Tel: 86-371-68000000
Mobile: 86-13676949605 (Whatsapp)
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