Patent classifications
E02F3/3411
Excavation system providing automated stall correction
An excavation system is disclosed for a machine having a work tool. The excavation system may have first and second actuators configured to move the work tool in first and second directions, at least a first valve configured to regulate fluid flow through the first actuator, and at least a second valve configured to regulate fluid flow through the second actuator. The excavation system may also have at least one sensor to generate a first signal indicative of a performance of the first actuator, and a controller in communication with the at least a first valve, the at least a second valve, and the at least one sensor. The controller may be configured to make a first determination that the first actuator is experiencing a stall condition based on the first signal, and to selectively command neutralization of the powertrain and movement of the second actuator based on the first determination.
FRONT LOADER
Provided is a front loader capable of easily holding a stand at a support position. Provided are: a stand provided on a boom and rockable to a support position where a front loader can be supported and a storage position where the front loader is stored; a link mechanism that couples the lock plate boom and the lock plate stand and is movable in conjunction with rocking of the lock plate stand; and a lock plate that is rockably provided on the lock plate boom and holds the lock plate stand at the lock plate support position by locking the lock plate link mechanism at a predetermined position.
WORK VEHICLE AND METHOD FOR CONTROLLING WORK VEHICLE
A power transmission device of a work vehicle has an input shaft, an output shaft, a gear mechanism, and an electric motor. The gear mechanism has a planetary gear mechanism and transmits the rotation of the input shaft to the output shaft. The electric motor is connected to a rotating element of the planetary gear mechanism. The power transmission device is configured to change the rotation speed ratio of the output shaft with respect to the input shaft by changing the rotation speed of the electric motor. A control unit has a target torque determination unit and a target torque correcting unit. The target torque determination unit determines a target torque of the electric motor. The target torque correcting unit corrects the target torque according to a correction torque based on a moment of inertia of the electric motor.
Machine control system for a wheel loader comprising a grading blade
Machine control systems for controlling a land levelling or earthmoving process of a wheel loader relative to a working plane are disclosed. In some embodiments, the wheel loader may be equipped with a land levelling or earthmoving blade and may comprise tool positioning means for adjusting the position and orientation of the tool relative to the first body. In some embodiments, the machine control system comprises a machine control unit and an orientation detection system. In some embodiments, the orientation detection system may include orientation detection means which are designed to be attached to the blade and/or to the wheel loader for detecting a position and an orientation of the blade relative to a working plane. In some embodiments, the orientation detection means are adapted to generate orientation data according to the relative position and orientation of the blade and to transmit the orientation data to the machine control unit.
Linkage arrangement for a working machine
A linkage arrangement for a working machine, the linkage arrangement being connectable to a work implement. The linkage arrangement includes a single boom lifting arm extending along a longitudinal centre axis and being configured to lift the work implement, and a tilting arrangement having two hydraulically driven arms arranged in parallel and being configured to tilt the work implement relative the single boom lifting arm. Each one of the two hydraulically driven arms is hydraulically driven by a separate hydraulic tilting cylinder.
Work vehicle
A work vehicle includes a vehicle body frame, an inverter, and first through fourth brackets. The first bracket extends in the vehicle width direction, and is disposed in front of the inverter. Both ends of the first bracket are supported by the vehicle body frame. The second bracket is fixed to the left part of the inverter, and extends in the vertical direction. The second bracket is fixed to the first bracket. The third bracket is fixed to the right part of the inverter, and extends in the vertical direction. The third bracket is fixed to the first bracket. The fourth bracket is fixed to at least one of the second and third brackets, extends in the longitudinal direction of the vehicle away from the first bracket, and is supported by the vehicle body frame. The shortest sides of the inverter extend in the longitudinal direction of the vehicle.
EXCAVATION SYSTEM PROVIDING AUTOMATED STALL CORRECTION
An excavation system is disclosed for a machine having a work tool. The excavation system may have first and second actuators configured to move the work tool in first and second directions, at least a first valve configured to regulate fluid flow through the first actuator, and at least a second valve configured to regulate fluid flow through the second actuator. The excavation system may also have at least one sensor to generate a first signal indicative of a performance of the first actuator, and a controller in communication with the at least a first valve, the at least a second valve, and the at least one sensor. The controller may be configured to make a first determination that the first actuator is experiencing a stall condition based on the first signal, and to selectively command neutralization of the powertrain and movement of the second actuator based on the first determination.