Power machines and control systems used thereon include a lift cylinder, a tilt cylinder, and a slave cylinder mechanically connected to assist the lift cylinder with raising a boom. With a lift control valve controlled to cause extension of the lift cylinder to raise the boom, pressure from a hydraulic source is provided to the slave cylinder to aid in raising the boom. Resulting increased pressure on a side of the slave cylinder opens load holding valves, allowing hydraulic pressure from the tilt cylinder to be communicated to the slave cylinder such that tilt cylinder pressure due to a heavy load on an implement aids in raising the boom.

The present disclosure relates to an implement connectable to a work vehicle. The implement includes an arm, a fastening arrangement arranged at a first part of the arm, and an attaching arrangement. The fastening arrangement is connectable to the work vehicle an attaching arrangement is arranged at second part of the arm. The attaching arrangement is attachable to a tool. The implement further includes a first hydraulic circuit configured to carry hydraulic fluid to at least one first hydraulic function. The first hydraulic function comprises a lifting function. The implement further includes at least one second sensor arranged to obtain sensor signals at least related to the lifting function, a local control element and a digital interface to the work vehicle.

A work machine includes a vehicle body, a blade supported so as to be rotatable about a pitch axis with respect to the vehicle body, a pitch actuator connected to the blade, a first sensor, and a controller. The pitch actuator causes the blade to perform a pitch motion about the pitch axis in a forward tilt direction and a backward tilt direction. The first sensor detects a first parameter relating to a penetration force of a blade tip of the blade in a downward direction. The controller determines whether the penetration force is insufficient based on the first parameter, and controls the pitch actuator to cause the blade to perform the pitch motion in the forward tilt direction upon determining that the penetration force is insufficient.

A construction machine is capable of preventing degradation in efficiency of excavation work while preventing an increase in excavation resistance in the excavation work. A controller of a construction machine determines an accommodation state of earth and sand accommodated in a bucket, and outputs a resistance reduction command signal that is a command signal for operating a work device such that the bucket is displaced in a resistance reduction direction that is a direction where excavation resistance acting on the bucket is capable of being reduced, in accordance with a result of determining the accommodation state.

A method of operating a loader having a clamshell bucket operationally connected thereto, wherein the clamshell bucket has a first clamshell portion pivotably connected to a second clamshell portion, including positioning the first clamshell portion in contact with the ground, and automatically adjusting the angular relationship between the first clamshell portion and the second clamshell portion as the second clamshell portion is moved through the ground to maintain a predetermined grade.

A front loader includes a boom, a first pivotal shaft disposed on a tip portion of the boom, a bucket supported by the first pivotal shaft to be capable of performing a shoveling movement and a dumping movement, a boom cylinder to swing the boom, a bucket cylinder to move the bucket to make the bucket perform the shoveling movement and the dumping movement, a control valve to be switched to any one of a first state supplying an operation fluid to the bucket cylinder and a second state stopping supplying the operation fluid to the bucket cylinder, a first movable member to turn around the first pivotal shaft in accordance with the movement of the bucket, and a wire connecting the first movable member to the control valve.

A method for controlling lowering of an implement of a working machine is provided. The working machine has a hydraulic system including a hydraulic cylinder for moving the implement and a first control valve for controlling the flow of hydraulic fluid from the piston side of the hydraulic cylinder, and a recovery unit connected to the control valve for recovering energy by receiving a return flow from the piston side of the hydraulic cylinder. The piston side of the hydraulic cylinder and the control valve are connected to each other, and the piston rod side of the hydraulic cylinder is connected to the control valve and to the recovery unit in a point between the control valve and the recovery unit. The method includes identifying a requested lowering speed of the implement, and identifying a desired pressure at the piston side of the hydraulic cylinder and controlling the recovery unit to provide a counter pressure resulting in the desired pressure at the piston side of the hydraulic cylinder, and enabling fluid communication between the piston side of the hydraulic cylinder and the recovery unit, and between the piston side of the hydraulic cylinder and the piston rod side of the hydraulic cylinder, via the control valve, and controlling the control valve in such a way that the flow through the control valve corresponds to the requested lowering speed of the implement.

A track-type loader machine includes a main frame, laterally spaced track roller frames, an equalizer bar pivotally mounted to the main frame and attached to the roller frames, a work implement movably connected to the main frame by a plurality of linkages, and at least one cross-slope actuator which connects one of the roller frames to the main frame. The at least one cross-slope actuator is configured to tilt the work implement and the plurality of linkages in conjunction with the main frame relative to a pivoting axis of the equalizer bar.

A bucket for an industrial vehicle configured to load, move, transport, tip and spread a bulk material. The bucket includes two lateral panels extending on each side of a loading panel having a loading edge and an unloading edge. The bucket includes a support panel, an opening panel, an adjuster and a fixing attachment. The adjuster includes a rotationally movable roller situated under the bucket and configured to turn in the direction of rotation of the wheels of the vehicle and to rest on the ground during spreading. The fixing attachment is configured to be fixed to the vehicle and is housed in a vertical translational movable space configured to leave travel for vertical translational movement. The fixing attachment is configured to rotationally move about an axis of rotation perpendicular to the support panel so as to turn the bucket relative to the ground.

A method of controlling a lift arm actuator and a tilt actuator to control positioning of an implement carrier coupled to a lift arm of a power machine. An activation signal is received from an enabling input device. A lift arm control signal is received from a lift arm control input commanding movement of the lift arm. The lift arm actuator is controlled responsive to receipt of both of the activation signal and the lift arm control signal to move the lift arm to a target lift arm position and to move the implement carrier to or maintain the implement carrier at a target implement carrier orientation relative to a gravitational direction.