Disclosed are various embodiments, aspects and features a multifunction, intelligent telescoping boom system. The system may comprise a hydraulic circuit with a continuous, circulating flow through a circuit that includes a hydraulic pump and a configurable valve bank. Valves in the valve bank may be designated to given components of any of a multitude of implement attachments. In this way, the continuous flow of hydraulic fluid through the valve bank may be distributed, via the valves, to the hydraulic components of implements. Hydraulic flow in excess of the demand created by the hydraulic components moves on through the valve bank and returns to the pump to continue the circulation. Also returning to the pump from the valve bank is any hydraulic fluid returning to the valve bank from the hydraulic components. Advantageously, because the system provides a continuous circulation of pressurized hydraulic fluid through the bank, implements with a mix of linear and rotating hydraulic components may be simultaneously powered from the same source of pressurized flow.

Disclosed are various embodiments, aspects and features a multifunction, intelligent telescoping boom system. The system may comprise a hydraulic circuit with a continuous, circulating flow through a circuit that includes a hydraulic pump and a configurable valve bank. Valves in the valve bank may be designated to given components of any of a multitude of implement attachments. In this way, the continuous flow of hydraulic fluid through the valve bank may be distributed, via the valves, to the hydraulic components of implements. Hydraulic flow in excess of the demand created by the hydraulic components moves on through the valve bank and returns to the pump to continue the circulation. Also returning to the pump from the valve bank is any hydraulic fluid returning to the valve bank from the hydraulic components. Advantageously, because the system provides a continuous circulation of pressurized hydraulic fluid through the bank, implements with a mix of linear and rotating hydraulic components may be simultaneously powered from the same source of pressurized flow.

A work vehicle includes a vehicle body, a work implement, a first cover, and a second cover. The work implement is movably coupled to the vehicle body. The first cover is coupled to the work implement. The second cover is hingedly coupled to the vehicle body and is at least partially overlappingly disposed on the first cover.

A work vehicle includes a vehicle body, a work implement, a first cover, and a second cover. The work implement is movably coupled to the vehicle body. The first cover is coupled to the work implement. The second cover is hingedly coupled to the vehicle body and is at least partially overlappingly disposed on the first cover.

A system for controlling a felling saw in a forestry machine, the felling saw being driven by a hydraulic pump and saw motor circuit. The system includes an instrument for measuring a rotational speed of the felling saw and generating a signal indicative of the rotational speed, a calculator for calculating a power consumption of the hydraulic pump and saw motor circuit adjusted as a function of the signal indicative of said rotational speed, and a controller for adjusting hydraulic settings of the hydraulic pump or/and saw motor circuit based on the calculated power consumption. A method for controlling the felling saw is also disclosed.

A system for controlling a felling saw in a forestry machine, the felling saw being driven by a hydraulic pump and saw motor circuit. The system includes an instrument for measuring a rotational speed of the felling saw and generating a signal indicative of the rotational speed, a calculator for calculating a power consumption of the hydraulic pump and saw motor circuit adjusted as a function of the signal indicative of said rotational speed, and a controller for adjusting hydraulic settings of the hydraulic pump or/and saw motor circuit based on the calculated power consumption. A method for controlling the felling saw is also disclosed.

The invention relates to an improved head for harvesting of trees. In particular, the head according to the invention is an improvement of a head for harvesting of trees as disclosed in European Patent EP2515628, which state of art is hereby incorporated by reference. In the known head, the balance between the saw pressure and the saw speed is controlled by the oil pressure at the inlet port of the hydraulic motor. This has the drawback that the saw pressure is depending on the saw speed. It is the aim of the invention to provide an improved head for harvesting trees, wherein the saw pressure is constant and independent of the saw speed.

The invention relates to an improved head for harvesting of trees. In particular, the head according to the invention is an improvement of a head for harvesting of trees as disclosed in European Patent EP2515628, which state of art is hereby incorporated by reference. In the known head, the balance between the saw pressure and the saw speed is controlled by the oil pressure at the inlet port of the hydraulic motor. This has the drawback that the saw pressure is depending on the saw speed. It is the aim of the invention to provide an improved head for harvesting trees, wherein the saw pressure is constant and independent of the saw speed.

An excavator attachment apparatus includes a first fork configured to be removably attached to the distal end of a dipper arm of an excavator, wherein the first fork has an inner side and an outer side. The excavator attachment apparatus further includes a power saw, wherein the proximal end of the power saw is rotatably coupled to the outer side of the first fork. The excavator attachment apparatus further includes a hydraulic cylinder configured to rotate the power saw when the hydraulic cylinder is actuated. The excavator attachment apparatus further includes a second fork configured to be removably attached to the bucket link and distal end of the dipper arm of the excavator and actuated by the hydraulic bucket cylinder of an excavator to alternate between an open position and a closed position relative to the first fork.

An excavator attachment apparatus includes a first fork configured to be removably attached to the distal end of a dipper arm of an excavator, wherein the first fork has an inner side and an outer side. The excavator attachment apparatus further includes a power saw, wherein the proximal end of the power saw is rotatably coupled to the outer side of the first fork. The excavator attachment apparatus further includes a hydraulic cylinder configured to rotate the power saw when the hydraulic cylinder is actuated. The excavator attachment apparatus further includes a second fork configured to be removably attached to the bucket link and distal end of the dipper arm of the excavator and actuated by the hydraulic bucket cylinder of an excavator to alternate between an open position and a closed position relative to the first fork.