A control system for the work vehicle includes a display, an input device, and a controller. The controller displays a current position of a work vehicle on a screen of a display. The controller receives a first input signal indicating an input operation by an operator from a input device. The controller determines, as a first position, the position of the work vehicle when the first input signal is received. The controller displays the first position on the screen of the display. The controller receives a second input signal indicating an input operation by an operator from the input device. The controller determines, as the second position, the position of the work vehicle when the second input signal is received. The controller determines a target design surface indicating a target trajectory of a work implement based on reference position information including at least the first position and the second position.

A circle drive system with clutch protection in motor graders is disclosed. The circle drive system includes a hydraulic motor that is configured to receive a pressurized fluid and generate a torque for a rotation of a circle and a moldboard. The circle drive system also includes a gearbox to transfer the torque generated by the hydraulic motor to the circle. Further, the circle drive system includes a clutch connected to the hydraulic motor at one end and to the gearbox at another end. In addition, the circle drive system also includes a hydraulic circuit having a pressure relief valve to relieve the pressurized fluid supplied to the hydraulic motor when a pressure of the pressurized fluid exceeds a predefined threshold. The pressure relief valve thereby, limits the torque generated by the hydraulic motor to less than or equal to a torque capacity of the clutch.

The present disclosure discloses a rotary frame and a grader, and relates to the field of a grader. The rotary frame includes: a rotary ring, provided with a recessed portion and an opening; a first connecting piece fixed at the periphery of the rotary ring, one end of the first connecting piece being attached to the periphery of the rotary ring and the other end of the first connecting piece being separated from the periphery of the rotary ring; a second connecting piece, the second connecting piece being also fixed at the periphery of the rotary ring, and one end of the second connecting piece being attached to the periphery of the rotary ring and the other end of the second connecting piece being separated from the periphery of the rotary ring; a supporting base fixed on an inner wall of the rotary ring and located in the recessed portion.

The present disclosure is directed to systems and methods for operating a grading machine. The method includes (i) receiving information indicating a current position of a moldboard of the grading machine; (ii) determining if the moldboard is moving toward an avoidance zone, and the avoidance zone is defined by a distance from a scarifier of the grading machine; and (iii) in response to a determination that the moldboard is moving toward the avoidance zone, adjusting at least one operating parameter of the moldboard or the scarifier of the grading machine.

A work vehicle comprising a frame supported by a ground engaging device. A boom assembly is coupled to the frame. A boom cylinder is coupled to the frame and the boom assembly. An attachment coupler is coupled to a distal portion of the boom assembly. At least one tilt cylinder is coupled to the boom assembly and the attachment coupler. A primary attachment is coupled to the attachment coupler. A secondary attachment is coupled to the primary attachment. The secondary attachment comprises a stand configured to move between a standing mode and a stored mode, wherein the stand automatically moves to the standing mode when it is decoupled from the primary attachment.

Systems to control movement of a motor grader include a sensor for providing a bounce signal indicative of a bouncing movement of the motor grader, and a controller programmed with instructions that, when executed: receive the bounce signal from the sensor; analyze the bounce signal from the sensor; determine whether the maximum amplitude of the bouncing movement exceeds a threshold; in response to determining whether the maximum amplitude exceeds the threshold, generate an articulation angle command signal to change an articulation angle of the motor grader; and transmit the articulation angle command signal to change the articulation angle.

A computer-implemented method for automatically adjusting a moldboard of a motor grader can include receiving one or more identifiers corresponding to a configuration of the motor grader, and determining, based on the received identifier(s), a first orientation of the moldboard. If the first orientation is not within an operating threshold, the method can further include selecting, based on the one or more identifiers, at least one of a plurality of actuators of the motor grader; and actuating the selected actuator(s) to move the moldboard from the first orientation to a second orientation within the operating threshold.

A controller controls the steering device so as to cause a vehicle body to turn toward the left when a left steering lever is operated without a right steering lever being operated. The controller controls the steering device so as to cause the vehicle body to turn toward the right when the right steering lever is operated without the left steering lever being operated. The controller reduces the rotation speed of the engine when both the left steering lever and the right steering lever are operated and both the operation amount of the left steering lever and the operation amount of the right steering lever are equal to or greater than a first threshold.

A frame of a work vehicle includes an upper plate that has a plate shape and that forms an upper surface of the frame extending along a front-rear direction; a lower plate that has a plate shape and that is opposite to the upper plate in an up-down direction and forms a lower surface of the frame; a vertical wall that is disposed between the upper plate and the lower plate in the up-down direction and connects the upper plate to the lower plate; and an attachment portion to which an actuator that moves work equipment in the up-down direction is attached, in which at least one of the upper plate and the lower plate includes a center portion, a first extension portion extending from the center portion, a second extension portion extending from the center portion, and a continuous portion connecting the first extension portion to the second extension portion.

Systems and methods for automatically adjusting a motor grader can include receiving one or more identifiers corresponding to a configuration of the motor grader; determining, based at least in part on the one or more identifiers, a position of a leading edge of a blade of the motor grader relative to a rear frame axis of the motor grader; and, if the determined position is not within an operating threshold, causing a frame actuator of the motor grader to change an articulation angle of the frame to move the leading edge to within the acceptable threshold.