How is the gantry hanging up?
That is called the tower crane, will increase with the increase in the floor, you carefully observe the tower can be found in the long tower hanging part of the section is connected by a section of the box, than a long section, to
The new put up in the gap, put the bolt, said a bit like some of the higher surgery, the first leg broken, opened, marked with nails, bone healing in their own, to achieve the purpose of increased
Rise when the first two links at the link to release the bolt, and then by the hydraulic device will be above the part of the increase, the following fixed, because there are sets of outside the box, so it will not fall, and then hanging from the tower crane
