Work machine

A work machine comprising:

• a telescopic boom having a first boom and a second boom that are telescopically overlapped;
• a telescoping actuator that moves the first boom in a telescoping direction with respect to the second boom, the telescoping actuator being a hydraulic cylinder with a movable portion;
• a single electrical motor provided in the movable portion of the telescoping actuator;
• a first fixing pin that connects the telescoping actuator and the first boom;
• a first connection mechanism that operates on a basis of a power of the single electrical motor, the first connection mechanism switching between a connection state and a disconnection state between the telescoping actuator and the first boom by inserting and removing the first fixing pin, and the first connection mechanism being arranged in the movable portion;
• a second fixing pin that connects the first boom and the second boom;
• a second connection mechanism that operates on the basis of the power of the single electrical motor, the second connection mechanism switching between a connection state and a disconnection state between the first boom and the second boom by inserting and removing the second fixing pin, and the second connection mechanism being arranged in the movable portion together with the first connection mechanism;
• a switch gear that transmits the power of the single electrical motor to either one of the first connection mechanism and the second connection mechanism;
• and
• a torque limiter that is disposed between the single electrical motor and the switch gear, the torque limiter maintaining, at a predetermined value or less, a load acting on a mechanical element constituting a power transmission path from the single electrical motor to the switch gear, wherein
• the first connection mechanism and the second connection mechanism are selectively actuated by the single electrical motor.