Electric single-beam bridge crane girder design

A factory workshop and based on the actual need to design a single girder crane with electric hoist, because single Hoist and trolley bridge crane girder is the main part of the design success or failure of the relationship between single girder bridge crane and security, thus girder design based on customer requirements. For the single girder crane with electric hoist from the customers the basic design parameters required: lifting weight Q = 3 t; Hoisting height H = 5 m; The span length L = 16.5 m. Girder cross section the choice of the form of single beam Manual block used electric hoist bridge crane beams as orbit of electric hoist, electric hoist running along the beams of the bottom flange. On the premise of meet the strength, stiffness and stability, small span of only a root i-beam girder, used only for lifting is not more than 50 kn, the span is not more than 11 m. To ensure the overall stability of the main girder and improve its stiffness, girder in the end beam should be set up between corner support, when necessary, set the horizontal truss, main girder and end beam welding connection. Main girder of a long-span steel composite beams or steel plates and beams is adopted to form the composite beams. Girder cross section forms in addition to the rolling or welding wide flange beams, other all use with the inside of the inclined flange beams. For large span should also set the level on the catwalk.