The invention discloses a portal crane windproof dragline device. The portal crane windproof dragline device comprises an ear plate extending out from a beam and a connecting rod connected with the ear plate, wherein a topspin connector is connected with the lower end of the connecting rod; the topspin connector is connected with a backspin connector by virtue of a tensioning nut, the tensioning nut comprises a nut body, the nut body is internally provided with upper and lower inner threads which are arranged in opposite directions, and the topspin connector and the backspin connector are respectively connected with the upper and lower inner threads. After such a structure is adopted, the portal crane windproof dragline device is simple, artful and reasonable in structural arrangement, low in manufacturing cost, high in reliability and high in stress; compared with a frequently-used windproof dragline device at present, the portal crane windproof dragline device is capable of anchoring large-scale shipbuilding gantry cranes with pull-up forces which are equal to or greater than 100t, is completely applicable to the large-scale shipbuilding gantry cranes, ensures the overturning stability of large-scale cranes such as the shipbuilding gantry crane, and has good popularization and application value.
Portal crane windproof dragline device
2015-06-10
Patent
Electronic Resource
English