A control stand is disclosed for controlling a crane, an excavator, a crawler, or a similar construction machine having a seat, control elements actuable from the seat for inputting control commands, a display apparatus for displaying information, and a control unit for generating adjustment signals in dependence on input control commands and/or for providing information to the display apparatus. A crane is disclosed having such a control stand that can be configured in the form of a crane operator's cabin. The control elements and/or the display apparatus of the control stand and various further auxiliary units can be individually configurable. Personal pre-settings can be saved and can be reinvoked when the control stand or the crane is to be controlled by a certain machine operator.

An excavator according to an embodiment of the present disclosure includes a lower traveling structure, an upper swing structure mounted on the lower traveling structure, a hydraulic driving motor configured to move the lower traveling structure, and a controller including a memory and a processor coupled to the memory and configured to control the hydraulic driving motor, and detect vibration of the upper swing structure and reduce variation of a command value for driving the hydraulic driving motor based on a mode of the vibration.

An excavator includes a control valve configured to control hydraulic oil to be supplied to an actuator, based on pilot pressure; an electric operation device configured to output an operation signal; a gate lock device; a gate lock valve provided on a pilot line supplying the pilot pressure to the control valve, and configured to open or close according to a state of the gate lock device, so as to switch between a locked state and a released state; a proportional valve provided on the pilot line; and a control part configured to receive as input the operation signal, to control the proportional valve, wherein the control part determines, in a case where the gate lock valve is in the locked state by the gate lock device and an operation is performed on the electric operation device, the operation as an operational error.

A first operating mechanism 7 of a work machine 1 includes a first guide member 74 which tilts a fourth operating lever 5 in the right-left direction, and a first actuator 72 which generates a driving force for tilting a first direction guide member 74 on the basis of an operation command The first actuator 72 is disposed at a position on the opposite side of the fourth operating lever 5 from a slave-side seat 3.

A work machine includes a work device having a boom, an arm, and work equipment and a controller that sets a target surface, and calculates a work equipment-to-target surface distance on the basis of signals from a position sensor and a posture sensor, and controls the boom and carries out deceleration control to decelerate the arm to keep the work equipment from excavating ground beyond the target surface when operation of the arm is carried out and the work equipment-target surface distance has become shorter than a predetermined distance. The controller determines whether or not there is a possibility that the work equipment enters the target surface when operation of the arm is carried out based on the set target surface and the signals from the position sensor and the posture sensor, and does not carry out the deceleration control even when the work equipment-to-target surface distance is shorter than the predetermined distance in the case in which it is determined that there is no possibility that the work equipment enters the target surface.

A method for actuating the movement of a boom, or an attachment, in a work vehicle includes determining a joystick position difference between the actual component of the position of the joystick along a boom, or attachment, actuation axis in a first time instant and a neutral position of the joystick along the boom, or attachment, actuation axis, determining a first position of the boom, or attachment, along the boom travel path in the first time instant, and a second position of the boom, or attachment, along the boom travel path in a second time instant, and determining a boom, or attachment, position difference between the second position and the first position. If the determined boom, or attachment, position difference is lower than a threshold and the determined joystick position difference is higher than a joystick position difference threshold, the method also includes slowing movement of the boom, or attachment.

The present invention refers to a method for generating a control command to at least one actuator of an electrohydraulic machine, comprising a step of receiving and monitoring an input signal provided by a user interface, a step of determining if the monitored input signal is related to a user-induced input or a non-user-induced input, and a step of generating the control command upon processing the input signal in dependence on whether the input signal is a user-induced input or a non-user-induced input.

In some implementations, an implement control system includes an operator control configured for manipulation in one or more motions and a controller. The controller may be configured to, based on a particular motion of the one or more motions, cause actuation of one or more first actuators, configured to selectively raise or lower a first lateral side of a work implement of a machine, and one or more second actuators, configured to selectively raise or lower a second lateral side of the work implement, in tandem. The one or more first actuators and the one or more second actuators may be controlled by independent control systems.

An implement control system may include one or more first actuators configured to selectively raise or lower a work implement of a machine and one or more second actuators configured to tilt the work implement. The implement control system may include an operator control configured for manipulation in one or more motions. The implement control system may include a controller configured to, based on a particular motion of the one or more motions, selectively cause actuation of the one or more first actuators in a first mode or the one or more second actuators in a second mode.

To make it possible to prevent a decrease in work speed due to a decrease in the speed of a given actuator when an operator unintentionally performs a fine operation of the control lever of the other actuator in a state in which the given actuator is driven by the hydraulic fluid delivered from a plurality of pumps, a controller (41) sets, as a composite dead zone line serving as a boundary of a composite dead zone, a composite dead zone line such that as an operation amount in one direction of a control lever (12L) or (13L) of a control lever device (12) or (13) is increased, the width of the composite dead zone corresponding to an operation amount in the other direction of the control lever is widened, and corrects the operation amount in the other direction such that the demanded flow rate of an actuator increases from zero, when the control lever is operated in the other direction in a state in which the operation amount in the one direction of the control lever remains within a range of the composite dead zone, and the operation amount in the other direction exceeds the composite dead zone line.