TAKEUCHI MFG. CO., LTD.

A working vehicle includes a control valve unit, a first drive unit, a travel unit, a lower body, an upper body, a second drive unit, a cab, a plurality of work units and a plurality of traveling hydraulic motors, an operation unit, and a controller. The first drive unit includes a first hydraulic pump, a first electric motor. The controller performs a control of the first electric motor and the second electric motor to adjust a first rotation speed of the first electric motor and a second rotation speed of the second electric motor such that a total rotation speed of the first rotation speed and the second rotation speed matches a target rotation speed calculated from required amount of pressure oil.

Maintenance of components to be maintained is facilitated in a working vehicle equipped with an electric motor as a driving source of a working unit. A working vehicle 1 includes an upper slewing body, a lower traveling body, working units that is operated by hydraulic pressure, an electric motor for driving the working units, a battery pack for supplying power for driving the electric motor: a battery pack compartment for installing the battery pack: and a battery cover that is openable and covers an opening in the battery pack compartment. In the battery pack, at least a battery management unit board, a cell management unit board, a charging fuse, and a service plug are disposed as the components to be maintained at positions within a reach of a maintenance worker's hand through the opening.

A working vehicle includes: a filler port having a resiliently deformable hose communicating with a liquid storage part, a lid mechanism mounted to an upper end of the hose to open and close the filler port, and a moving mechanism. The moving mechanism includes: a fixing part pivotably coupled to the vehicle body and having the lid mechanism or the hose; an operating part pivotably coupled to the fixing part and including a knob; and a slide support fixed to the vehicle body and including a sliding hole for slidably inserting the knob therethrough to define a sliding range, and a locking recess. The fixing part or the operating part includes a locking projection.

An operation control system includes a control device having a hydraulic pump control unit that controls a hydraulic pump based on a level that an operator selects from levels in n stages (n being an integer of 2 or more). The hydraulic pump control unit has operation distance/current value corresponding data where an operation distance of an operating lever and a current value are made to correspond to each other in a corresponding manner with each level in the levels in n stages. A current value that corresponds to an operation distance of the operating lever at a present point of time is acquired from the operation distance/current value corresponding data that corresponds to the level that the operator selects, and controls the discharge amount of a pressurized oil that the hydraulic pump discharges based on the acquired current value.

Provided is a working vehicle that can effectively cool cooled devices without compressing the small device housing space and, at the same time, can contribute to the reduction of the cost. A working vehicle includes: a work equipment that is operated by a pressurized oil that a hydraulic pump discharges; and an upper slew body where, in a device housing space formed in the upper slew body, a plurality of equipment that includes a hydraulic pump and an electric motor that drives the hydraulic pump are housed. In the plurality of equipment, cooled devices (an on-board charger, the electric motor, an inverter, an oil cooler) and one cooling fan for cooling the cooled devices exist. The cooled devices are arranged along a cooling air flow path through which cooling air that is generated by the cooling fan flows.

A working vehicle includes an engine, a first hydraulic pump, a second hydraulic pump, a travel unit, a working unit, an operation unit, an ECU and a vehicle-controller. The vehicle-controller transmits a control command of a standard mode to the ECU when the travel unit stopped and a first period is elapsed, with a discharge pressure from the hydraulic pump being equal to or higher than a reference value, an engine load factor being equal to or higher than a predetermined upper limit, the vehicle-controller transmits the control command of the economy mode to the ECU when a second period is elapsed, with the engine load factor being equal to or lower than a predetermined lower limit, and the vehicle-controller transmits the control command of the standard mode to the ECU when the travel unit is operated.

There is provided a working vehicle and a method for controlling a working vehicle that can improve operability when travel and work operations are repeated. A working vehicle includes: a travel unit that is operated by travel operation means and brake operation means; a working unit that is operated by hydraulic pressure; a main brake circuit that generates a braking force in keeping with an operated amount when the brake operation means is in an operated state; and an auxiliary brake circuit that generates a predetermined braking force when the travel operation means is in a non-operated state.

A working vehicle including a work unit hydraulically driven, a hydraulic pump driven by an electric motor, a power source and a power supply circuit which supply electric power to the electric motor, and a main body supporting them, a first fixation mechanism fixing a first fixation component to the main body includes a first conductor, a first conduction member making the first conductor and the main body electrically conductive to each other, and a second conduction member making the first conductor and the first fixation component electrically conductive to each other, and is configured such that the main body and the first fixation component are electrically conductive to each other via the first conductor and the first and second conduction members and are equal in electric potential, and the main body is electrically conductive and equal in electric potential to a ground pole of the power supply circuit.

An operation control system includes a control device having a hydraulic pump control unit that controls a hydraulic pump based on a level that an operator selects from levels in n stages (n being an integer of 2 or more). The hydraulic pump control unit has operation distance/current value corresponding data where an operation distance of an operating lever and a current value are made to correspond to each other in a corresponding manner with each level in the levels in n stages. A current value that corresponds to an operation distance of the operating lever at a present point of time is acquired from the operation distance/current value corresponding data that corresponds to the level that the operator selects, and controls the discharge amount of a pressurized oil that the hydraulic pump discharges based on the acquired current value.

Provided is a working vehicle operation control system that can suppress wear of a crawler. A working vehicle operation control system includes: a hydraulic pump that is driven by an engine; left and right hydraulic motors; and a hydraulic pump control unit that controls a pressurized oil discharge amount of the hydraulic pump after an engine starts, and controls a traveling operation of a working vehicle. The hydraulic pump control unit controls, in a case where one of a right-side crawler traveling speed and a left-side crawler traveling speed of the crawler is not more than a predetermined traveling reference speed and the other of the right-side crawler traveling speed and the left-side crawler traveling speed is not less than the predetermined traveling reference speed, the pressurized oil discharge amount of the hydraulic pump so as to decrease the other crawler traveling speed.