hung pulley block, set the winch for small and medium-bridge from the physical machine

 mast mast erection methods used mobile cranes erect, quick and safe crane beam can also be used stand mast bracket wrench can also be used auxiliary mast vertical mast. Using the crane beam corbel Erecting the mast, to carry on the crane beam corbel force checking to ensure the transverse horizontal component does not exceed the maximum weight within the span of the bridge crane nominal weight and the amount of the sum of a trolley / 20.
Erection of masts, the mast should be pre-wind cable rope bindings temporarily close the roof truss bottom chords on the mast until the mast was hanging to determine the location immediately after the electric stacker wind cable rope fastened on top of the mast and tighten the ground, such as individual wind cable rope lift after the force has stayed truss chord or circumstances, the application temporarily wind cable hove live mast, fixed wind cable rope adjusted to the appropriate location, and then release the temporary wind cable wire.
⑤ hung pulley block, set the winch for small and medium-bridge from the physical machine, and can be hung two pulley block, with two hoisting winches, hoist mast set the location and distance from the center is greater than the length of the mast, winches available fixed column within the plant roots, but should be tied at the wood and other protective pads.
(2) group on the carts, loaded trolley traveling crane girders, the car shipped to the lifting position for assembly, carts group finished, the car is placed on a trolley track, and carts tied securely.
(3) bundled beam carts for less than 50t overhead crane, just hang two pulley block, generally using a cross-tied method, the method is: the mast lug toward the direction of the end beam bridge crane system hang hanging pulley block , running rope through the top of the mast mast fixed pulley down to the bottom along the guide pulley toward the winch. Run rope using sequential method. In the side of the cart with a rope tied to the beam cross-licensing to go through two openings platen bundle, so that tied rope was tapped: "∞" shape, commonly known as "8"-shaped bundle method, as shown in 7-9.