Work machine
AssigneeKomatsu Ltd.
InventorMasaho Yamaguchi
Life of this patent
Estimating the term…
Abstract
An environment-friendly work machine is provided. A work implement includes a boom supported by a vehicular body frame, an arm coupled to the boom, and an attachment coupled to the arm. A boom foot pin rotatably couples the boom to the vehicular body frame. An arm motor is supported by the vehicular body frame. The arm motor generates drive force that moves the arm relatively to the boom. A motive power transmission apparatus mechanically transmits drive force generated by the arm motor to the arm. An arm gear member and a pivot member carry out rotational motion relative to the vehicular body frame as being concentric with the boom foot pin. An arm link transmits motive power to the arm as a result of the relative rotational motion.
Claims11
A work machine comprising:
- a vehicular body frame;
- a work implement including a boom supported by the vehicular body frame, an arm coupled to the boom, and an attachment coupled to the arm;
- a boom foot pin that rotatably couples the boom to the vehicular body frame;
- an electric motor supported by the vehicular body frame, the motor generating drive force that moves the arm relatively to the boom;
- and
- a motive power transmission apparatus that mechanically transmits drive force generated by the motor to the arm, wherein
- the motive power transmission apparatus includes:
- a first transmission member that carries out rotational motion relative to the vehicular body frame as being concentric with the boom foot pin, and
- a second transmission member that transmits motive power to the arm as a result of the relative rotational motion of the first transmission member, wherein
- the second transmission member includes:
- an intermediate member connected to the boom,
- a rod-shaped first link member extending along an outer side of the boom and coupled to the intermediate member, the first rod-shaped link member transmitting drive force to the intermediate member, and
- a rod-shaped second link member extending along the outer side of the boom and coupling the intermediate member and the arm to each other.
Dependencies are inferred from the claim text.