TAKEUCHI MFG. CO., LTD.

To provide a traveling control mechanism and a traveling control method capable of controlling a traveling mechanism taking into consideration operation contents of a remote control valve. The problem is solved by a traveling control mechanism comprising a remote control valve ( 21, 22, 23, 24 ), a pressure adjusting solenoid valve ( 61, 62 ), a setting mechanism ( 70 ), and a controller ( 60 ). The traveling mechanism ( 8 ) allows a traveling speed to be switched between a high speed and a low speed in accordance with an operation amount of the remote control valve ( 21, 22, 23, 24 ). An HST circuit ( 30 ) is provided with a pump ( 31, 32 ) and a traveling motor ( 33 ), the pump ( 31, 32 ) connects to a pilot line ( 41, 42, 43, 44 ) allowing a hydraulic oil supplied from the remote control valve ( 21, 22, 23, 24 ) to flow therethrough, a pressure sensor ( 45 ) is attached to the pilot line ( 41, 42, 43, 44 ), and a rotation sensor ( 65 ) is attached to the traveling motor ( 33 ). The controller ( 60 ) controls a pressure of the hydraulic oil supplied from the remote control valve ( 21, 22, 23, 24 ) independently of a manual operation of the remote control valve ( 21, 22, 23, 24 ), on the basis of a setting signal, a pressure signal, and a rotation speed signal. The remote control valve ( 21, 22, 23, 24 ) controls a flow rate of the hydraulic oil discharged from the pump ( 31, 32 ) by changing or keeping constant the pressure inside the pilot line ( 41, 42, 43, 44 ).

There is provided a direct current power supply circuit mounted in a working vehicle with increased safety as compared with related art by a configuration where a main power source is used after a battery management system (BMS) determines that the main power source can be used. A direct current power supply circuit includes a first power source, a switch, a second power source and a first relay, in which the first power source is connected to a battery management system through the first relay so as to supply direct current power, the battery management system is activated by supply of direct current power from the second power source when the switch is turned on, and the first relay is on-controlled when determined that the first power source can be used.

There is provided a storage apparatus for documents capable of preventing the storage apparatus from being an obstacle to getting-on/off motions and securing front visibility in good condition. A storage apparatus includes a frame having an opening and wall portions and a lid portion attached to the frame, in which an entrance of the canopy is provided on a left side or a front side of a vehicle body, the frame is fixed to a right side of the vehicle body, the lid portion has a structure in which a right end is attached to the right wall portion of the frame, a left end turns between a position of the left wall portion and a position in a lower direction of the right wall portion, and a holding portion holding the documents is provided in an inner surface.

An operation control device for a working vehicle which includes a hydraulic working device, comprises a hydraulic actuator to drive the hydraulic working device, an operating oil supply source for driving the hydraulic actuator, a sent-out oil amount control device that controls the amount of oil sent out from the operating oil supply source, an operating device to be operated to make the hydraulic actuator work, and an operating oil supply control device that performs control to supply operating oil to the hydraulic actuator according to operation of the operating device. The sent-out oil amount control device controls the amount of oil sent out from the operating oil supply source according to the operation amount of the operating device.