A harrow apparatus comprising an implement frame and a harrow section attached to a mounting assembly extending rearward from the implement frame such that the harrow section engages the ground surface. The mounting assembly is movable upward and downward to move the harrow section down and up. The mounting assembly comprises a beam extending rearward above the harrow frame, and front and rear arms pivotally attached at upper ends thereof to corresponding front and rear beam pivot axes located on the beam. The front arm slopes downward and rearward to a lower end thereof that is pivotally attached to the harrow frame at a front frame pivot axis, and the rear arm slopes downward and forward to a lower end thereof that is pivotally attached to the harrow frame at a rear frame pivot axis located rearward of the front frame pivot axis.

A harrow apparatus comprising an implement frame and a harrow section attached to a mounting assembly extending rearward from the implement frame such that the harrow section engages the ground surface. The mounting assembly is movable upward and downward to move the harrow section down and up. The mounting assembly comprises a beam extending rearward above the harrow frame, and front and rear arms pivotally attached at upper ends thereof to corresponding front and rear beam pivot axes located on the beam. The front arm slopes downward and rearward to a lower end thereof that is pivotally attached to the harrow frame at a front frame pivot axis, and the rear arm slopes downward and forward to a lower end thereof that is pivotally attached to the harrow frame at a rear frame pivot axis located rearward of the front frame pivot axis.

Work machines, control systems for work machines, and methods of operating work machines are disclosed. A work machine includes a frame structure, a work implement, and a control system. The work implement is coupled to the frame structure and includes at least one ground engagement tool that is configured for movement in response to interaction with an underlying surface in use of the use work machine. The control system is coupled to the frame structure and includes a sensor mounted to the at least one ground engagement tool and a controller communicatively coupled to the sensor.

Work machines, control systems for work machines, and methods of operating work machines are disclosed herein. A work machine includes a frame structure, a work implement, and a control system. The work implement is coupled to the frame structure and includes at least one ground engagement tool that is configured for movement in response to interaction with an underlying surface in use of the use work machine. The control system is coupled to the frame structure and includes a sensor mounted to the at least one ground engagement tool and a controller communicatively coupled to the sensor.

Work machines, control systems for work machines, and methods of operating work machines are disclosed herein. A work machine includes a frame structure, a work implement, and a control system. The work implement is coupled to the frame structure and includes at least one ground engagement tool that is configured for movement in response to interaction with an underlying surface in use of the use work machine. The control system is coupled to the frame structure and includes a sensor mounted to the at least one ground engagement tool and a controller communicatively coupled to the sensor.

A modular harrow apparatus for smoothing horse pens includes a vehicle carabiner that attaches to an ATV, a UTV, or a small tractor. Each of a pair of chains has a vehicle end coupled to the vehicle carabiner and a harrow end. A lead harrow bar has a pair of first front eyelets coupled to the pair of chains and a pair of first rear eyelets. A second harrow bar has a pair of second front eyelets. A pair of linkage systems is coupled between the pair of first rear eyelets of the lead harrow bar and the pair of second front eyelets of the second harrow bar. A plurality of tines is coupled to a first bottom face of the lead harrow bar and a second bottom face of the second harrow bar.

A modular harrow apparatus for smoothing horse pens includes a vehicle carabiner that attaches to an ATV, a UTV, or a small tractor. Each of a pair of chains has a vehicle end coupled to the vehicle carabiner and a harrow end. A lead harrow bar has a pair of first front eyelets coupled to the pair of chains and a pair of first rear eyelets. A second harrow bar has a pair of second front eyelets. A pair of linkage systems is coupled between the pair of first rear eyelets of the lead harrow bar and the pair of second front eyelets of the second harrow bar. A plurality of tines is coupled to a first bottom face of the lead harrow bar and a second bottom face of the second harrow bar.

A modular harrow apparatus for smoothing horse pens includes a vehicle carabiner that attaches to an ATV, a UTV, or a small tractor. Each of a pair of chains has a vehicle end coupled to the vehicle carabiner and a harrow end. A lead harrow bar has a pair of first front eyelets coupled to the pair of chains and a pair of first rear eyelets. A second harrow bar has a pair of second front eyelets. A pair of linkage systems is coupled between the pair of first rear eyelets of the lead harrow bar and the pair of second front eyelets of the second harrow bar. A plurality of tines is coupled to a first bottom face of the lead harrow bar and a second bottom face of the second harrow bar.

A modular harrow apparatus for smoothing horse pens includes a vehicle carabiner that attaches to an ATV, a UTV, or a small tractor. Each of a pair of chains has a vehicle end coupled to the vehicle carabiner and a harrow end. A lead harrow bar has a pair of first front eyelets coupled to the pair of chains and a pair of first rear eyelets. A second harrow bar has a pair of second front eyelets. A pair of linkage systems is coupled between the pair of first rear eyelets of the lead harrow bar and the pair of second front eyelets of the second harrow bar. A plurality of tines is coupled to a first bottom face of the lead harrow bar and a second bottom face of the second harrow bar.

By providing an electronic control system in communication with a hydraulic system for adjusting an angle of smoothing tools of a harrow, the smoothing tools may be adjusted more quickly and on the go, including from a tractor cab, for optimum field leveling during a tilling session. The control system may include a hydraulic control valve in communication with a linear actuator. The linear actuator may be in communication with a slide bar disposed in a channel. By configuring multiple bars of a harrow to achieve an angle of rotation defined by the slide bar, the angle of rotation for smoothing tools of the harrow may be precisely controlled by the control system.