What are methods and installation of walking bridge girder?
1.The method and steps of installation：
a. surveying positioning b.assemble two sides main girder symmetrically(add temporary support). c.installing front and rear connecting frame and temporary slope support d.installing front, middle legs ,rear bracket and rear legs e.installing lifting trolley f.hydraulic system g.electrical system h.test run and commissioning
2. Checking methods after installation of walking type bridge girder launcher: 
We should check geometry size, verticality, horizontality and deflection etc. after the structures are installed completely:
1、Checking connecting parts connect firmly or not.
2、Checking the electric connection is correct and limit switch is reliable or not.
3、Checking parts of hydraulic system leak oil or not and the lifting is good or not.
4、checking mechanism and structure parts run successfully or not. 5、checking lubricating condition of rotating parts.
6、checking the oil level meet the requirements or not ,and then making a trial run .
7、After all of above checking and adjustments are finished, and making sure every part goes well, and then doing the trial run.
