JOURNAL AND SELF-PROPELLED LIFTING CRANE WITH SAID JOURNAL Russian patent published in 2014 - IPC B66C3/00 B62D7/00 

FIELD: transport.

SUBSTANCE: invention relates to self-propelled lifting devices. Self-propelled crane comprises chassis and at least four caterpillar chains secured to said chassis. Note here that every caterpillar chain has a carcass secured to said chassis with the help of journal having horizontal axis. Caterpillar chain is secured to chassis to turn about journal horizontal axis relative the chassis. Besides, the crane comprises rotary platform coupled with said chassis to turn about caterpillar chain and boom articulated at rotary platform front. Linear actuator is added to the crane between caterpillar chain and chassis to extend through the journal. Linear actuator makes the part of self-fastening mechanism. This journal comprises tubular element with lengthwise axis and first end to be coupled with crane chassis and second end to be connected with caterpillar chain carcass. At least one of said ends allows said carcass to turn about lengthwise axis relative to the chassis. Linear actuator is arranged inside hollow central tubular element. Said linear actuator is composed by hydraulic cylinder. Chassis connector is secured to hydraulic cylinder one end while chassis connector is secured to hydraulic cylinder opposite end.

EFFECT: fast connection/disconnection of chassis and caterpillar chain in crane assembly disassembly.

21 cl, 40 dwg