Provided is a construction machine that can prevent a machine body from being lowered since a blade is not put into a float state even where a misoperation is made by an operator when the machine body is in a jacked-up state, and that can perform a favorable leveling operation by putting the blade into the float state in accordance with an operator's operation when the machine body is not in the jacked-up state. A hydraulic excavator includes a controller 42 that determines whether or not the machine body is in a jacked-up state and controls a float valve 41. In the case where it is determined that the machine body is not in the jacked-up state, the controller 42 changes over the float valve 41 to a float position V and invalidates an operation of a blade control valve 22, in accordance with a float instruction. In the case where it is determined that the machine body is in the jacked-up state, the controller 42 holds the float valve 41 in a reference position IV and validates the operation of the blade control valve 22, irrespectively of the presence or absence of the float instruction.

A base station for measurements emits measurement radiation into a beam plane with a wobbling motion of the beam plane, such that a position of a normal of the beam plane is changed in a predefined manner such that orientations of the normal occur repeatedly, for example with a cyclic repetition of the beam plane. A measuring assembly for such a base station can be provided with at least one associated remote terminal. A method for guiding a mobile object, in particular a vehicle, uses a base station and at least one active remote terminal permanently associated therewith, which form a transceiver measuring assembly.

A skid loader blade assembly, including a connection plate, at least one vertical actuator operationally connected to the connection plate for moving a blade relative to the plate, and a hinged blade operationally connected to the vertical actuator. The hinged blade further includes a hinge, a first blade portion connected to the hinge, and a second, oppositely disposed blade portion connected to the hinge. The skid loader blade assembly also includes a first pivot actuator operationally connected to the first blade portion and a second pivot actuator operationally connected to the second blade portion.

A work vehicle comprising a material management system using moldboard gates. A sensor is configured to generate a signal indicative of a ground feature and a location of the ground feature. A moldboard is coupled to the work vehicle and is configured to move a ground material. A gate is coupled to the moldboard and a gate actuator is coupled to the gate. The gate actuator is configured to move the gate to an open position, a closed position, or to a position in between. A controller which is in communication with the sensor is configured to receive the signal indicative of the ground feature and the location and control the gate actuator to move the gate based on the ground feature and the location.

A method of controlling a grading attachment on a skid steer vehicle that includes the steps of lowering a main arm of a skid steer vehicle with either an electric non-hydraulic cylinder or a drive motor to the main arm’s lowest allowed position along an arm translation path on the skid steer vehicle and adjusting, while the main arm is the in the lowest allowed position, either or both a pitch axis movement and/or a yaw axis movement of a grading attachment coupled to the main arm autonomously using an automatic grade control system implementing at least one of a laser, a GPS, an LPS, and an ultrasonic sensor and with at least one a plurality of electric non-hydraulic cylinders and drive motors, wherein the automatic grade control system is communicatively coupled to the at least one a plurality of electric non-hydraulic cylinders and drive motors.

Graders and methods of operation thereof are disclosed herein. A grader includes a chassis, a saddle linkage, and a motion measurement system. The saddle linkage is supported for movement relative to the chassis and includes a mount movably coupled to the chassis, first and second arms each movably coupled to the mount, and a crossbar movably coupled to each of the first and second arms. The mount has a lock pin aperture, each of the first and second arms has a locking hole, and the crossbar has a plurality of locking holes. The lock pin aperture may be aligned with one locking hole of the first arm, the second arm, or the crossbar to position the saddle linkage in use of the grader. The motion measurement system is coupled to the saddle linkage and configured to measure movement or position of one or more components of the grader in use thereof.

A vehicle grade control system and method of controlling an implement position of a motor grader moving along a path of a surface. The motor grader includes a frame supported by wheels and an implement adjustably coupled to the frame. The control system includes a processor and a memory configured to receive a grade target to grade the surface to a desired grade with the implement based on the grade target. Surface irregularities of the surface in a path of the motor grader are located. An angle of the frame is determined based on the located surface irregularities and a difference between the identified angle of the frame and the grade target is determined. A position of the implement with respect to the frame based on the determined difference is identified and the surface is graded with the identified position of the implement.

A grading system for connection to a vehicle having vertically movable arms, the grading system including a grading blade assembly having a frame having a first pivot extending upward, a second pivot extending forward, a blade connected to the frame via the first pivot and the second pivot, a blade yaw actuator and a blade roll actuator, wherein the frame is configured to have the first pivot extend substantially vertically and the second pivot extend substantially longitudinally when the grading blade assembly is connected to the vehicle and the blade and vehicle are in a level position on a ground surface and the vertically movable arms of the vehicle are in a first raised position above a lowest most position.

An work vehicle includes a chassis. A prime mover, an operator cab and a camera are supported by the chassis. The operator cab has a user interface. A first ground-engaging member and a second ground-engaging member positioned on opposite sides of the chassis are configured to move the work vehicle in a direction of travel when actuated by the prime mover. A work attachment is movably coupled to the chassis by a coupling mechanism. The camera is configured to capture an image of an area between the one of the first and second ground-engaging members and the work attachment and an area in front of the work attachment. A control system includes a controller in communication with the user interface and the camera. The controller is configured to display the image captured by the camera on the user interface.

Graders and methods of operation thereof. A grader includes a chassis, a saddle linkage, and a motion measurement system. The saddle linkage is supported for movement relative to the chassis and includes a mount movably coupled to the chassis, first and second arms each movably coupled to the mount, and a crossbar movably coupled to each of the first and second arms. The mount has a lock pin aperture, each of the first and second arms has a locking hole, and the crossbar has a plurality of locking holes. The lock pin aperture may be aligned with one locking hole of the first arm, the second arm, or the crossbar to position the saddle linkage in use of the grader. The motion measurement system is coupled to the saddle linkage and configured to measure movement or position of one or more components of the grader in use thereof.