Two-dimensional attachment grade control for work vehicle
AssigneeDeere & Company
InventorJohn Mahrenholz
Life of this patent
Estimating the term…
Abstract
A work vehicle is disclosed. The work vehicle comprises an attachment comprising a cutting edge. The attachment is configured to move from an operating position to a dump position. An operator input device is configured to receive a grade command. A grade control system is communicatively coupled to an operator input device and configured to receive the grade command and define a cutting plane. A controller is configured to receive a boom position signal, an attachment position signal, and the grade command. The controller is configured to maintain the cutting edge on the cutting plane in both the operating position and the dump position.
Claims20
A work vehicle comprising:
- a frame;
- at least one ground engaging device coupled to the frame and configured to support the frame above a surface;
- a boom assembly coupled to the frame;
- at least one boom cylinder coupled to the frame and the boom assembly and configured to move the boom assembly;
- a boom position sensor coupled to at least one of the frame, the boom assembly, and the at least one boom cylinder and configured to transmit a boom position signal indicative of a position of the boom assembly;
- an attachment coupler coupled to a distal portion of the boom assembly;
- at least one tilt cylinder coupled to the boom assembly and the attachment coupler and configured to move the attachment coupler;
- an attachment position sensor coupled to at least one of the boom assembly,
- the attachment coupler, and the at least one tilt cylinder and configured to transmit an attachment position signal indicative of a position of the attachment coupler;
- an attachment coupled to the attachment coupler, the attachment comprising a cutting edge, the attachment configured to move from an operating position to a dump position;
- an operator input device configured to receive a grade command;
- a grade control system communicatively coupled to the operator input device and configured to receive the grade command and define a cutting plane;
- and
- a controller configured to receive the boom position signal, the attachment position signal, and the grade command, the controller configured to maintain the cutting edge on the cutting plane in both the operating position and the dump position during forward or backward motion of the work vehicle.
A work vehicle comprising:
- a frame;
- at least one ground engaging device coupled to the frame and configured to support the frame above a surface;
- a boom assembly coupled to the frame;
- at least one boom cylinder coupled to the frame and the boom assembly and configured to move the boom assembly;
- a boom position sensor coupled to at least one of the frame, the boom assembly, and the at least one boom cylinder and configured to transmit a boom position signal indicative of a position of the boom assembly;
- an attachment coupler coupled to a distal portion of the boom assembly;
- at least one tilt cylinder coupled to the boom assembly and the attachment coupler and configured to move the attachment coupler;
- a hydraulic system fluidly coupled to the at least one boom cylinder and the at least one tilt cylinder;
- an attachment position sensor coupled to at least one of the boom assembly, the attachment coupler, and the at least one tilt cylinder and configured to transmit an attachment position signal indicative of a position of the attachment coupler;
- a bucket coupled to the attachment coupler, the bucket comprising a cutting edge, the bucket configured to move from an operating position to a dump position;
- an operator input device configured to receive a grade command;
- a grade control system communicatively coupled to the operator input device and configured to receive the grade command and define a cutting plane;
- and
- a controller configured to receive the boom position signal, the attachment position signal, and the grade command, the controller configured to control the hydraulic system to maintain the cutting edge on the cutting plane in both the operating position and the dump position during forward or backward motion of the work vehicle.
A method for maintaining a cutting edge on a cutting plane in both an operating position and a dump position of a work vehicle, the work vehicle comprising a frame, a boom assembly coupled to the frame, an attachment coupler coupled to a distal portion of the boom assembly, and an attachment coupled to the attachment coupler, the method comprising:
- receiving a boom position signal indicative of a position of the boom assembly;
- receiving an attachment position signal indicative of a position of the attachment coupler;
- receiving a grade command and defining the cutting plane;
- and
- maintaining the cutting edge on the cutting plane while moving the attachment during forward or backward motion of the work vehicle.
Dependencies are inferred from the claim text.