The invention discloses a marine jib crane luffing structure. Three booms are arranged at the front end of a platform through rotating shafts, three tripods are arranged at the rear end of the platform, a winding drum which is powered by a motor is arranged at the top end of each tripod, a steel rope on the winding drum is fixedly connected with the top end of each boom, three bottom sliding mechanisms are arranged in the middle of the platform, and are connected with telescopic oil cylinders through rotating shafts, and the top end of each telescopic oil cylinder is connected with the middle of each boom correspondingly one by one. According to the marine jib crane luffing structure disclosed by the invention, a steel rope luffing mechanism and a telescopic cylinder luffing mechanism are matched with each other for use, so that relatively light objects can be lifted by directly using the steel rope luffing mechanism when a crane lifts the relatively light objects, and when the lifted objects are overweight, firstly the telescopic cylinder luffing mechanism can be used for luffing lifting, and then the steel rope luffing mechanism is appropriately adjusted to be matched with the telescopic cylinder luffing mechanism, so as to avoid the excessive wear of a steel rope.
Marine jib crane luffing structure
2015-06-03
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
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