Bi-level dual hoisting container transport crane

Abstract

Containers are transported by movement of upper and lower trolleys along vertically spaced travel paths established by laterally spaced rails formed in a boom supported in a horizontal position by suspension cables attached to a frame assembly through which the boom extends horizontally between container receiving and delivery locations.

1. In a load handling crane for transport of containers between receiving and delivery locations, the improvement residing in: at least two non-pivotal trolleys onto which the containers are positioned; rail means for guiding simultaneous movement of the trolleys between said locations passing each other vertically spaced travel paths to effect said transport of the containers; and wheeled frame means for support of the rail means. 
   
   
     2. The load handling crane as defined in  claim 1 , wherein said rails means comprises: a boom having a pair of laterally spaced upper rail tracks establishing one of said travel paths and a pair of laterally spaced lower rail tracks establishing the other of the travel paths, said wheeled frame means supporting the boom extending in a horizontal position between said receiving and delivery locations. 
   
   
     3. The load handling crane as defined in  claim 2 , wherein said wheeled frame means includes: laterally spaced legs having lower and upper ends between which the boom extends; and cable means interconnecting the boom with the upper ends of the legs for suspension of the boom in said horizontal position. 
   
   
     4. The load handling crane as defined in  claim 3 , including pivotally displaceable spreader means operatively mounted on the non-pivotal trolleys for reception and delivery of the containers at said receiving and delivery locations. 
   
   
     5. The load handling crane as defined in  claim 1 , including pivotally displaceable spreader means on the non-pivotal trolleys for reception and delivery of the containers at said receiving and delivery locations.