How to avoid the accidents of the bridge girder launcher?

The accident is easy to happen when bridge girder launcher moves from one pier to another pier. In order to finish the construction easily and guarantee the safety of workers. ZZHZ gives us some advice as following:

1. The user must make sure the remote control choose the mainframe and motor of auxiliary legs at the same time and control them to drive the launching gantry move from one pier to another pier.
2. The worker who observes professionally if the motors of auxiliary legs and rear legs run synchronously when the machine is running.
3. the worker uses the level to measure the level, and the front and rear height difference of main girder should meet the requirement, the front legs has a little high, and the left and right of main girder should be horizontal.
4. After moving from one pier to another pier is finished, the rear legs are padded by steel cushion block to make the 4 steel cushion blocks touch the ground which are anchored by the precision rolled thread steel and hand chain hoist( The bridge abutment only are anchored by hand chain hoist).
5. the worker who observes professionally the trolley of front suspension girder, the trolley of down suspension girder and motor of auxiliary legs to make sure they run synchronously when the machine is moving from one pier to another pier.
6. After the down guiding beam moves to its place, the auxiliary legs mustn?t bear force, and trolley steel wheel of auxiliary legs, under change gear and under beam are separated.

Bridge Girder Launcher