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US 11,686,069 B2Granted
Shovel
AssigneeSumitomo Construction Machinery Co., Ltd.
InventorTakashi Yamamoto
Life of this patent
Estimating the term…
Abstract
A shovel includes a hydraulic actuator, an operating apparatus used to operate the hydraulic actuator, an obtaining device configured to obtain information concerning the vibration of the body of a shovel, and a hardware processor. The hardware processor is configured to perform such control as to reduce the responsiveness of the hydraulic actuator to the operation of the operating apparatus when the body of the shovel is vibrating or the vibration is likely to occur in the body of the shovel, based on the output of the obtaining device.
Claims18
A shovel comprising:
- a hydraulic actuator;
- an operating apparatus used to operate the hydraulic actuator;
- a hydraulic pump configured to supply hydraulic oil to, the hydraulic actuator;
- an engine configured to drive the hydraulic pump;
- an obtaining device configured to obtain information concerning a vibration of a body of the shovel;
- and
- a hardware processor configured to detect an occurrence of the vibration of the body of the shovel based on an output of the obtaining device and perform such control as to reduce responsiveness of the hydraulic actuator to an operation of the operating apparatus in response to detecting the occurrence of the vibration of the body of the shovel,
- wherein the hardware processor is configured to perform at least one of:
- such control as to lower an acceleration and deceleration characteristic of the hydraulic actuator with respect to the operation of the operating apparatus;
- reducing a rotational speed of the engine to reduce a pump flow rate of the hydraulic pump;
- and controlling a tilt angle of the hydraulic actuator to reduce the pump flow rate of the hydraulic pump, in response to detecting the occurrence of the vibration of the body of the shovel.
8 more elements
A shovel comprising:
- a hydraulic actuator;
- an operating apparatus used to operate the hydraulic actuator;
- an obtaining device configured to obtain information concerning a vibration of a body of the shovel;
- and
- a hardware processor configured to
- detect an occurrence of the vibration of the body of the shovel based on an output of the obtaining device and perform such control as to reduce responsiveness of the hydraulic actuator to an operation of the operating apparatus in response to detecting the occurrence of the vibration of the body of the shovel, and
- select the responsiveness of the hydraulic actuator to the operation of the operating apparatus from among multiple levels according to a degree of an occurring vibration in response to detecting the occurrence of the vibration of the body of the shovel.
4 more elements
A shovel comprising:
- a hydraulic actuator;
- an operating apparatus used to operate the hydraulic actuator;
- an obtaining device configured to obtain information concerning a vibration of a body of the shovel;
- a hardware processor configured to perform such control as to reduce responsiveness of the hydraulic actuator to an operation of the operating apparatus when the body of the shovel is vibrating or the vibration is likely to occur in the body of the shovel, based on an output of the obtaining device;
- a lower traveling body;
- an upper turning body turnably mounted on the lower traveling body;
- a hydraulic pump mounted on the upper turning body;
- and
- a bleed valve configured to control a flow rate of a portion of hydraulic oil discharged by the hydraulic pump, the portion flowing to a hydraulic oil tank without going through the hydraulic actuator,
- wherein the hardware processor is configured to control the responsiveness by changing an opening area of the bleed valve.
7 more elements
Dependencies are inferred from the claim text.