Construction machine, drive device for construction machine, and drive unit for construction machine
AssigneeNabtesco Corporation
InventorsYasuhito IDA, Motohiro TANAKA, Noriko FURUTA
Life of this patent
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Abstract
A construction machine includes: a drive device outputting torque centered on a rotational axis perpendicular to a reference axis extending in upper and lower directions of a travelable vehicle body; and a boom having a first end portion coupled to the vehicle body, the boom being rotated around the rotational axis by the torque from the drive device. When viewed in a first direction parallel to the rotational axis, the boom is rotatable to both one side and other side with respect to the reference axis.
Claims14
A construction machine comprising:
- a drive device outputting torque centered on a rotational axis orthogonal to a reference axis extending in upper and lower directions of a travelable vehicle body;
- and
- a boom having a first end portion coupled to the vehicle body, the boom being rotated around the rotational axis by the torque from the drive device,
- wherein, when viewed in a first direction parallel to the rotational axis, the boom is rotatable to both one side and other side with respect to the reference axis.
A construction machine comprising:
- a first slewing device outputting torque centered on a first slewing axis extending in upper and lower directions of a travelable vehicle body;
- a boom having a first end portion coupled to the vehicle body, the boom being rotated around the first slewing axis by the torque from the first slewing device;
- a second slewing device outputting torque centered on a second slewing axis, the second slewing axis being parallel to the first slewing axis and passing through a second end portion of the boom opposite to the first end portion of the boom;
- an arm having a first end portion coupled to the second end portion of the boom and a second end portion opposite the first end portion, the arm rotating around the second slewing axis by the torque from the second slewing device;
- and
- an attachment coupled to the second end portion of the arm.
A construction machine comprising two work mechanisms, wherein each work mechanism includes:
- a first drive device outputting torque centered on a first rotational axis orthogonal to a reference axis extending in upper and lower directions of a travelable vehicle body;
- a boom having a first end portion coupled to the vehicle body, the boom being rotated around the first rotational axis by the torque from the first drive device;
- a second drive device outputting torque centered on a second rotational axis, the second rotational axis being parallel to the first rotational axis and passing through a second end portion of the boom opposite to the first end portion of the boom;
- an arm having a first end portion coupled to the second end portion of the boom and a second end portion opposite the first end portion, the arm rotating around the second rotational axis by the torque from the second drive device;
- and
- an attachment coupled to the second end portion of the arm,
- wherein, when viewed in a direction parallel to the first rotation axis of a first work mechanism of the two work mechanisms, the two work mechanisms are disposed on one side and other side respectively with respect to a center of the vehicle body in a direction orthogonal to both the first rotational axis and the reference axis of the first work mechanism.
Dependencies are inferred from the claim text.