A system for tracking a position of a working edge on an implement of a construction vehicle includes a GNSS with an antenna. The GNSS unit is configured to determine a position of the antenna and a tilt and a heading of the GNSS unit. A mount is configured to couple the GNSS unit to a rigid member of the construction vehicle. The mount is configured to couple the GNSS unit to the rigid member so that the antenna is arranged in a known spatial relationship with a pivot point between the rigid member and the implement. A mobile controller is configured for wireless communications with the GNSS unit and an angle sensor that is configured to determine rotation of the implement. The mobile controller is configured to receive the position of the antenna, the tilt, and the heading from the GNSS unit, to receive the rotation of the implement from the angle sensor, and to determine coordinates of the working edge of the implement in a real world coordinate frame.

An operation control device for a working vehicle comprises a hydraulic actuator to drive the hydraulic working device, operating oil supply source for driving the hydraulic actuator, an operating oil supply control device that performs control to supply operating oil to the hydraulic actuator, an operating device to be operated to make the hydraulic actuator work and a working gain setting device that sets a gain of working speed of the hydraulic actuator corresponding to the operation of the operating device. The operating oil supply control device controls operating oil supply from the operating oil supply source to the hydraulic actuator based on the operation output signal from the operating device and the working speed gain set by the working gain setting device.

A working machine includes a machine body an operator seat mounted on the machine body, a front working device swingable upward and downward, the front working device being provided forward of the operator seat and on one side in a machine-width direction eccentric with respect to a central portion of the operator seat, and a front guard provided forward of the operator seat. The front guard includes a first frame member provided forward of the operator seat and on the one side, and a second frame member provided forward of the operator seat and on another side opposite to the one side, the first frame member includes a main rod portion defining upper and lower portions of the first frame member, extending between the upper and lower portions of the first frame member, and provided rearward of the front working device, and the main rod portion is formed to be positioned in a machine fore-and-aft direction closer to the operator seat than the second frame member.

A working machine comprising a ground engaging structure and an undercarriage connected to the ground engaging structure. A superstructure is rotatably mounted to the undercarriage so as to be rotatable relative to the undercarriage about a first generally upright axis, an operator's cab is rotatably mounted on the superstructure so as to be rotatable relative to the superstructure about a second generally upright axis, and a working arm is rotatably mounted to the superstructure so as to be moveable up and down about a generally horizontal axis. A drive arrangement is provided for driving the ground engaging structure to propel the working machine. The drive arrangement includes an engine and transmission that are housed within the undercarriage, and a majority of the engine is positioned below a level coincident with a lower extent of the superstructure.

A joystick assembly for a working machine having a working arm includes a controller configured to control a plurality of machine functions, a first electronic joystick in communication with the controller, and actuators in communication with the controller. Each actuator is configured to actuate a function associated with the working arm. The first electronic joystick comprises four axes of movement, and the first electronic joystick is configured to transmit electronic signals to the controller in response to being displaced along an axis from a neutral position. The controller is configured to receive the electronic signals from the first electronic joystick, and to transmit an electrical signal to one or more actuators to actuate the actuators. The joystick assembly is configured such that the controller actuates a different actuator for controlling a different function associated with the working arm, dependent upon the axis of displacement of the first electronic joystick.

In a hydraulic drive system performing the load sensing control by using a pump device having two delivery ports whose delivery flow rates are controlled by a single pump controller, surplus flow is prevented and energy loss at an unload valve and a pressure compensating valve is reduced in combined operations in which two actuators are driven at the same time while producing a relatively large supply flow rate difference therebetween. A boom cylinder 3a is connected so that the hydraulic fluids delivered from delivery ports P1 and P2 of a pump device 1a are merged and supplied to the boom cylinder 3a. An arm cylinder 3h is connected so that the hydraulic fluids delivered from delivery ports P3 and P4 of a pump device 1b are merged and supplied to the arm cylinder 3h. A travel motor 3d is connected so that the hydraulic fluid delivered from one (delivery port P2) of the delivery ports of the pump device 1a and the hydraulic fluid delivered from one (delivery port P4) of the delivery ports of the pump device 1b are merged and supplied to the travel motor 3d. A travel motor 3e is connected so that the hydraulic fluid delivered from the other (delivery port P1) of the delivery ports of the pump device 1a and the hydraulic fluid delivered from the other (delivery port P3) of the delivery ports of the pump device 1b are merged and supplied to the travel motor 3e.

An earth moving vehicle (EMV) autonomously performs an earth moving operation within a dig site. If the EMV determines that a state of the EMV or the dig site triggers a triggering condition associated with a pause in the autonomous behavior of the EMV, the EMV determines a risk associated with the state or triggering condition. If the risk is greater than a first threshold, the EMV continues the autonomous performance and notifies a remote operator that the triggering condition was triggered. If the risk is greater than the first threshold risk but less than a second threshold risk, the EMV is configured to operate in a default state before continuing and notifying the remote operator. If the risk is greater than the second threshold risk, the EMV notifies the remote operator of the state pauses the performance until feedback is received from the remote operator.

A working machine includes either front and rear wheels or a pair of endless tracks supporting an undercarriage, a drive arrangement including a prime mover configured to provide motive power to propel the working machine, a superstructure connected to the undercarriage via a rotary connector, and a working arm connected to the superstructure. The machine also includes a fuel tank assembly comprising at least one fuel tank defining an internal volume for storing fuel to be supplied to the prime mover, wherein the at least one fuel tank is interposed between the superstructure and the undercarriage.

A method of controlling a work machine is a method of controlling the work machine provided with a machine body that moves according to an operation device operation and that is capable of changing an operation pattern which is a correspondence between the operation device operation and the machine body movement. The control method has presenting the operation pattern information, which shows the current operation pattern, at the time of switching from a state in which the machine body fails to move according to the operation device operation to a state in which the machine body moves according to the operation device operation.

Control valves 100f, 100g, and 100h that reduce flow passage areas of parallel hydraulic fluid lines 41f, 41g, and 41h respectively when operating devices 34a, 34b for traveling are operated, are each disposed in the parallel hydraulic fluid line 41f, 41g, or 41h so that if saturation occurs during combined operations control likely to generate a significant difference in load pressure between any two actuators, the control valve prevents full closing of a pressure compensating valve lower in load pressure and thus prevents a slowdown and stop of the actuator undergoing the lower load pressure, and so that if saturation occurs during combined operations control likely to generate a particularly significant difference in load pressure between any two actuators, the control valve ensures a necessary supply of hydraulic fluid to the actuator higher in load pressure, thereby preventing a slowdown and stop of the actuator higher in load pressure.