Importance

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Abstract

A facility for maintaining and servicing multiple units of equipment such as jet engines, after removal from an aircraft by conventional procedures, makes use of a multiple number of service bays serving as maintenance stations disposed on opposite sides of a central delivery way. An under hung bridge crane travels back and forth throughout the length of the central delivery way. Screw jacks at four corners of the crane are attached to and operate to elevate and lower a twin rail lifting bridge on which a jet engine unit is slung. The unit is supported by fixtures attached to trolleys which roll on the twin bridge rails. There is a mating twin rail lifting bridge in each bay with which the lifting bridge of the crane can temporarily interlock, so that the engine unit can be pushed on its trolleys from one lifting bridge to the other. Four corner located screw jacks also lift and lower the lifting bridge in each bay. Additionally at each of the four corner locations of the lifting bridge on the crane as also on the lifting bridge for each bay there is a sliding vertical guide assembly operable during all lifting and lowering operations of the respective lifting bridge to insure lateral stability.

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First Claim