PURPOSE: To operate two or more overhead traveling cranes installed in the same yard by means of a single operator in an optional timing without moving on foot between the cranes.
CONSTITUTION: In two or more overhead traveling cranes to travel on the same travel beam, these cranes are formed in a structure composed only of a crane body without an operation chamber, and independent of the crane body, the operating chamber 1 can make a self-advance on a separate travel track 5 arranged in parallel with the travel beam 8, and under a crane girder 6 of the respective crane bodies as well as above the operating chamber 1, there are provided connecting means 2 and 4 to connect/ separate both mechanically/electrically to/from each other by approaching this operating chamber 1 to an optional one of the crane bodies.
NISHINOHARA HIROSHI
TSUJI AKIRA
