Bridge is a steel crane

Bridge is the basic building bridge crane , from the main beam, side beams of several parts. Cross over the main beam frame shop , which has two ends connected to the outer end of the beam, overhead gantry crane beam and fitted with a safety railing walkway . Bridge is equipped with carts transitional institutions , electrical boxes, lifting mechanism , trolley orbit and auxiliary slide wire rack . The bridge is equipped with a cab . The other end is equipped with the introduction of the power of the main Waterloo line . Carts transitional mechanism driven by electric motors,grab bucket crane, brakes , drive shaft, reducer and wheels of several parts. Its methods are focused on the driver and the driver were driving two kinds.