The invention discloses a liftable cross beam for a bridge crane. The liftable cross comprises a bridge crane support frame and a bridge crane cross beam, wherein the bridge crane support frame comprises a support base and a threaded telescopic rod, the threaded telescopic rod is assembled on the longitudinal centre line of the support base by virtue of a threaded connection, and the lower part of the threaded telescopic rod stretches into the support base; the bridge crane cross beam is provided with a driving mechanism used for driving the thread telescopic rod, an axial bearing is a tapered roller bearing, a thrust ball bearing or an angular contact ball bearing. According to the technical scheme, the threaded telescopic rod is arranged between the support frame of the support bridge crane cross beam and the cross beam, the lower end of the threaded telescopic rod is in threaded fit with the support frame, and the upper end of the threaded telescopic rod and the bridge crane cross beam are assembled by virtue of the bearing; the rotation or expansion of the threaded telescopic rod directly drives the bridge crane cross beam to ascend or descend, and the thread telescopic rod is driven to rotate by virtue of a driving motor, so as to realize electronic control.
Liftable cross beam for bridge crane
2015-06-03
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
Liftable transverse beam for bridge crane and operation method
Europäisches Patentamt | 2021
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