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US 12,571,182 B2Granted
Work machine
AssigneeSumitomo Heavy Industries, Ltd.
InventorYasuhiro Yamamoto
Life of this patent
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Abstract
A work machine includes: a traveling body; a rotating body rotatably mounted on the traveling body; an attachment attached to the rotating body; and a control part. In this work machine, the attachment has a hook for hoisting a load, and, when the load is positioned ahead of the hook in a rotating direction of the rotating body upon deceleration of rotation of the rotating body, the control part executes anti-swing control on the rotation of the rotating body such that the hook is positioned immediately above the load's center of gravity.
Claims10
A work machine comprising:
- a traveling body;
- a rotating body rotatably mounted on the traveling body;
- an attachment attached to the rotating body, the attachment including a hook for hoisting a load;
- a rotating hydraulic motor with a first port and a second port, the rotating hydraulic motor being configured to rotate the rotating body;
- a hydraulic pressure sensor configured to detect pressures of hydraulic oil at the first port and the second port;
- and
- a hardware processor configured to, when the load is positioned ahead of the hook in a rotating direction of the rotating body upon deceleration of rotation of the rotating body, execute anti-swing control on the rotation of the rotating body such that the hook is positioned immediately above a center of gravity of the load,
- wherein the hardware processor is configured to execute the anti-swing control according to the pressures of hydraulic oil at the first port and the second port detected by the hydraulic pressure sensor.
5 more elements
A work machine comprising:
- a traveling body;
- a rotating body rotatably mounted on the traveling body;
- an attachment attached to the rotating body, the attachment including a hook for hoisting a load;
- and
- a hardware processor configured to, when the load is positioned ahead of the hook in a rotating direction of the rotating body upon deceleration of rotation of the rotating body, execute anti-swing control on the rotation of the rotating body such that the hook is positioned immediately above a center of gravity of the load,
- wherein the hardware processor is configured to calculate a rotational moment of the rotating body about a rotating axis, using a weight of the load and a radius of rotation of the attachment, and to execute the anti-swing control based on the calculated rotational moment of the rotating body.
3 more elements
Dependencies are inferred from the claim text.