Patent classifications
E02F3/283
SYSTEM AND METHOD FOR CONTROLLING WORK VEHICLE IMPLEMENTS DURING IMPLEMENT SHAKE OPERATIONS
A system for controlling the operation of a work vehicle implement during an implement shake operation may include an implement configured to pivotably coupled to a loader arm. A controller may be configured to monitor an angle of the implement relative to the arm during the implement shake operation. Furthermore, the controller may be configured to determine first and second differentials between monitored angles of the implement during first and second cycles of the implement shake operation, respectively, and a predetermined average implement angle. Additionally, the controller may be configured to determine an estimated differential between an anticipated angle of the implement during a third cycle of the implement shake operation and the predetermined angle based on the first and second differentials. Furthermore, the controller may be configured to adjust a duty cycle and/or an amplitude of the third cycle of the implement shake operation based on the estimated differential.
Construction machine
A construction machine includes: an engine driving at least one hydraulic pump configured to supply operating oil to a hydraulic actuator; an exhaust adjustment mechanism adjusting a flow rate of exhaust from the engine; and a control device controlling the exhaust adjustment mechanism. The control device determines whether or not a first downhill traveling condition and/or a second downhill traveling condition are/is satisfied. When at least one of the first downhill traveling condition and the second downhill traveling condition is satisfied, the control device controls the exhaust adjustment mechanism such that the exhaust adjustment mechanism executes exhaust brake.
Utility vehicle having a front loader
A utility vehicle having a front loader includes an installation base for mounting the front loader on the utility vehicle. The vehicle includes a swing arm arranged in an articulated manner on the installation base and a swing arm cylinder supported on the installation base and on the swing arm. The swing arm cylinder has two hydraulic connections via which the swing arm cylinder is connected to working connections of a hydraulic controller. A hydraulic switching arrangement includes different switching positions connected between the two hydraulic connections of the swing arm cylinder and the hydraulic controller such that in a short-circuited switching position of the switching arrangement. The two hydraulic connections of the swing arm cylinder are hydraulically connected to one another, and in a separated switching position of the switching arrangement, the two hydraulic connections of the swing arm cylinder are hydraulically separated from one another.
Work Vehicle
To provide a technique for reliably acquiring a required braking power during travel and for efficiently using a regenerative power generated during braking. A work vehicle calculates a regenerative power outputted from an electric motor and a target hydraulic driving power for driving a hydraulic pump, supplies the regenerative power to the generator motor operating as a motor and makes the generator motor consume the regenerative power in a case where the regenerative power is equal to or smaller than the target hydraulic driving power, and supplies the regenerative power to the generator motor operating as the motor and makes an exhaust brake consume a power equivalent to a difference between the regenerative power and the target hydraulic driving power in a case where the regenerative power is larger than the target hydraulic driving power.
LOADING VEHICLE
Provided is a loading vehicle in which a control characteristic of traction force can be easily and finely set and changed while a configuration of a hydraulic circuit is simple. An HST traveling driven wheel loader includes an electronically controlled HST pump and HST motor, including a solenoid proportional pressure reducing valve to control displacement volume of the HST pump based on a control signal output from a controller. The controller stores characteristic tables indicating a correlation between discharge pressure of a loading hydraulic pump or an operation state of an engine and a maximum discharge pressure of the HST pump, and when the vehicle speed corresponds to work requiring traction force, outputs a control signal to the solenoid proportional pressure reducing valve so as to obtain the maximum discharge pressure Pm of the HST pump that corresponds to one of the characteristic tables.
WORK MACHINE
Provided is a work machine capable of notifying that maintenance is necessary due to continuation of clogging in a cooling device or decrease in cooling performance. A wheel loader 1 including a radiator 31 and an oil cooler 32 comprises a controller 5, 5A configured to determine a clogging continuation state of the radiator 31 or the oil cooler 32. The controller 5, 5A determines whether clogging is occurring in the radiator 31 or the oil cooler 32 based on outside air temperature AW and cooling water temperature CW or hydraulic oil temperature HW, determines whether the clogging continues based on a clogging occurrence ratio R1, R2 while an engine 30 is operating, and outputs a notification command signal for providing the alarm buzzer 61 and the user management system 62 with a command to notify that maintenance is necessary when it is determined that the clogging continues.
SYSTEM AND METHOD FOR DEPOSITING MATERIAL AT A TARGET LOCATION WITH A WORK VEHICLE
A method for depositing material at a target location with a work vehicle includes receiving an input associated with a target weight of the material to be deposited at the target location. Additionally, the method includes controlling an operation of the vehicle such that an implement of the vehicle obtains a quantity of the material. Furthermore, the method includes controlling the operation of the vehicle such that the implement is raised from a first to a second position. Moreover, the method includes determining a weight of the currently obtained quantity of the material as the implement is raised from the first to the second position. In addition, the method includes controlling the operation of the vehicle such that the currently obtained quantity of the material is deposited at the target location. Further, the method includes initiating display of a current total weight of the material deposited at the target location.
STEERING DEVICE, STEERING SYSTEM, AND WORK VEHICLE
A steering device for operating a work vehicle includes a support part, a base member rotatably supported by the support part, a lever rotatably supported by the support part or the base member, a biasing member and a transmission mechanism connecting part. The biasing member is interposed between the lever and the base member to bias the lever to a predetermined position with respect to the base member. The transmission mechanism connecting part configured to be connected to a transmission mechanism configured to transmit rotation based on a rotation angle of a steering shaft of the work vehicle to the base member. A restriction part may restrict rotation of the lever when an angle of the lever with respect to the base member reaches a predetermined angle.
WORK VEHICLE
An articulated work vehicle has front and rear frames coupled. The work vehicle includes a hydraulic actuator driven by hydraulic pressure to change a vehicle body frame angle of the front frame with respect to the rear frame, a lever rotatable to change the body frame angle, a control valve that controls a flow rate of oil supplied to the hydraulic actuator, and a controller. The controller sets a target angle of the vehicle body frame angle with respect to an input angle of the lever, and controls the control valve such that an actual angle of the vehicle body frame angle matches the target angle of the vehicle body frame angle.
A WORKING MACHINE, A WORK ATTACHMENT AND A COMBINATION THEREOF
A working machine includes a work attachment connection arrangement configured to operationally connect to the working machine a work attachment provided with a work tool; and a control system configured to control the operation of the working machine and to control the operation of the work attachment. The working machine further includes: at least a first electric motor; a first rechargeable battery; an electric power circuit connecting the first electric motor and the first rechargeable battery, wherein the work attachment connection arrangement includes a first electrical connector, wherein the first electric connector is configured to be connected to a corresponding electrical connector connected to an auxiliary rechargeable battery