Patent ID: 11958726
Assignee: TADANO LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B  E | IPC B

Claim 0:
1. A work machine, comprising:
an actuator that extends and retracts a telescopic boom;
an electric drive source that is provided in the actuator and drives using power supplied from a power source;
an operating unit that operates based on power of the electric drive source; and
a joint that has a drive-side element fixed to a first transmission shaft that rotates on the basis of the power of the electric drive source and a driven-side element fixed to a second transmission shaft connected to the operating unit, the joint being able to take a transmission state in which both the drive-side element and the driven-side element rotate and a non-transmission state in which only either the drive-side element or the driven-side element rotates,
wherein
the boom includes a first boom element and a second boom element that are telescopically overlapped with each other, and
the operating unit includes:
a first connecting mechanism that connects the first boom element and the actuator based on an urging force of a first urging mechanism and releases the connection between the first boom element and the actuator based on the power of the electric drive source, and

a second connecting mechanism that connects the first boom element and the second boom element based on an urging force of a second urging mechanism, and releases the connection between the first boom element and the second boom element on the basis of the power of the electric drive source.