The invention discloses a lifting hook structure of a tower crane. The lifting hook structure comprises an upper pulley block (1), a lower pulley block (2), a multiplying power pin shaft (3) and a shaft sleeve (5), wherein corresponding connection holes are formed in the upper pulley block (1) and the lower pulley block (2); the multiplying power pin shaft is provided with a split pin hole in a shaft shoulder; a corresponding slit pin hole is formed in the shaft sleeve; the shaft sleeve is fixed on the outer side of the upper pulley block or the lower pulley block; the multiplying power pin shaft penetrates into the connection holes of the upper pulley block and the lower pulley block from one side of the shaft sleeve when being installed; and when the slit pin hole of the multiplying power pin shaft is concentric with the slit pin hole in the shaft sleeve, a slit pin (4) is inserted and fixed. According to the lifting hook structure of the tower crane disclosed by the invention, by a structural form of fixing movement of the pin shaft in two directions by virtue of the slit pin, transformation of multiplying power can be achieved by an operator on only one side of the lifting hook; the lifting hook structure is simple in structural form, convenient to produce and process, and convenient to install and dismantle.
Lifting hook structure of tower crane
2015-04-22
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |