Abstract: A work vehicle includes a hydraulic main speed change clutch and a Hi-Lo clutch provided to a power transmission device for transmitting power to drive wheels, and a speed change control device configured to control vehicle speed in multi-stage manner by a combination of the main speed change clutch and the hydraulic Hi-Lo clutch. In shift-up operation for changing the speed from a low speed stage range to a high speed stage range in which a high speed clutch is used, before completion of speed change, the high speed clutch pressure is kept at a first pressure (Pa) higher than the low speed clutch pressure while the pressure of the main speed change clutch, which is a speed change source, is kept, so that the power is transmitted by a combination of the high speed clutch and the main speed change clutch, which is a speed change source.

Abstract: A work vehicle may be provided such that in autonomous traveling, contact with obstacles is avoided, and work is efficiently and safely performed. A work vehicle may include: a positioning device 174 measuring the vehicle body's own position; an obstacle recognition means recognizing an obstacle P, E, U; and a control unit having the vehicle autonomously travel on a planned travel path R1 preliminarily set; wherein the control unit includes obstacle position information D4 preliminarily stored; while traveling on the planned travel path R1, when an obstacle P, E is recognized by the obstacle recognition means, at a position stored in the obstacle position information D4, avoidance driving is performed to avoid contact with the obstacle P, E; and when the position of an obstacle U recognized by the obstacle recognition means is different from the stored obstacle position information D4, the traveling is stopped.

Abstract: A work vehicle according to an embodiment includes: (i) a travelling vehicle body that includes a power source to a work part and a travel part; (ii) a communication unit that is able to transmit and receive signals to and from a portable communication terminal; and (iii) a control unit that is able to control the travel part on the basis of a signal transmitted from the portable communication terminal and received by the communication unit. A plurality of communication systems is provided between the communication unit and the portable communication terminal. The communication systems include a first communication system that is able to transmit a first signal from a portable communication terminal, and a second communication system that has a smaller communication area than that of the first communication system and is able to receive a second signal indicating that the portable communication terminal exists in a predetermined area.

Abstract: According to one embodiment, a work vehicle includes: a traveling vehicle body; an engine supported by the traveling vehicle body; a power transmission device which transmits power of the engine to a wheel, and has a clutch member which is supported to be movable between a transmission position and a block position; a braking device which brakes the wheel; a brake control unit which allows the clutch member to move to the block position and the braking device to operate in a case where the traveling vehicle body is braked; a brake determination unit which determine whether the traveling vehicle body is braked in a case where the braking device is operated; and an engine control unit which stops the engine in a case where the traveling vehicle body is not braked on the basis of a determination result of the brake determination unit.

Abstract: A speed change control apparatus for a work vehicle includes a hydraulic continuously variable speed transmission that performs speed change on power input from an engine by changing a trunnion shaft angle based on a depressing amount of a speed change pedal and outputs the power, a pedal position detector that detects a pedal position responsive to the depressing amount of the speed change pedal, and a control unit that controls a number of revolutions of the engine and the trunnion shaft angle of the hydraulic continuously variable speed transmission based on a detection value of the pedal position detector. The control unit performs control so that the trunnion shaft angle is maximized at a second pedal position set to a position shallower than a first pedal position at which the number of revolutions of the engine is maximized by a depressing operation of the speed change pedal.

Abstract: A working vehicle according to an embodiment includes an exhaust pipeline and a cover. The exhaust pipeline includes an exhaust gas purification device provided to stand on one of left and right sides of a running vehicle body. The cover is provided to cover at least a peripheral surface of the exhaust gas purification device of the exhaust pipeline and has an opening in a bottom thereof. The cover has a plurality of vent holes with a diameter less than that of the opening that are formed above the opening.

Abstract: According to one embodiment, a work vehicle includes: a traveling vehicle body; an engine supported by the traveling vehicle body; a power transmission device which transmits power of the engine to a wheel, and has a clutch member which is supported to be movable between a transmission position and a block position; a braking device which brakes the wheel; a brake control unit which allows the clutch member to move to the block position and the braking device to operate in a case where the traveling vehicle body is braked; a brake determination unit which determine whether the traveling vehicle body is braked in a case where the braking device is operated; and an engine control unit which stops the engine in a case where the traveling vehicle body is not braked on the basis of a determination result of the brake determination unit.

Abstract: A working vehicle, including: an HST pedal which operates an HST; a damper arm which interlocks with an HST pedal rotation-shaft of the HST pedal; a damper attached to the damper arm; and a transmission case, wherein the transmission case has a first transmission case swelling part swelling to at least one side with respect to a left-and-right direction, and the damper is arranged behind the first transmission case swelling part.

Abstract: A work vehicle according to an embodiment includes: (i) a travelling vehicle body that includes a power source to a work part and a travel part; (ii) a communication unit that is able to transmit and receive signals to and from a portable communication terminal; and (iii) a control unit that is able to control the travel part on the basis of a signal transmitted from the portable communication terminal and received by the communication unit. A plurality of communication systems is provided between the communication unit and the portable communication terminal. The communication systems include a first communication system that is able to transmit a first signal from a portable communication terminal, and a second communication system that has a smaller communication area than that of the first communication system and is able to receive a second signal indicating that the portable communication terminal exists in a predetermined area.

Abstract: A work vehicle with a travel control device that allows stationary work without disabling a theft-prevention state of the vehicle is provided. The work vehicle includes an engine, a power transmission device having a clutch for transmitting rotational power of the engine to drive wheels, a travel control device for controlling the clutch in the power transmission device and having a start restriction mode for restricting engagement of the clutch when electrical power is turned on, a mobile terminal configured to transmit signals for enabling and disabling the start restriction mode, and a control unit configured to transmit and receive signals to and from the mobile terminal.

Abstract: A work vehicle includes two types of PTO shafts, a PTO drive unit, a storage unit, a PTO gear shift operation unit, a PTO shaft detection sensor, a PTO gear shift sensor and a control device. The storage unit stores a PTO shaft, which is not connected to the driven portion, of the two types of PTO shafts. The PTO gear shift operation unit performs gear-shifting of the gear shift mechanism. The PTO shaft detection sensor detects a type of the PTO shaft stored in the storage unit. The PTO gear shift sensor detects an operation state of the PTO gear shift operation unit. The control device decides a propriety of a combination of a detection value of the PTO shaft detection sensor and a detection value of the PTO gear shift sensor.

Abstract: A working vehicle, including: a driving unit into which a worker gets to perform driving, the driving unit being provided to a vehicle-body; a step on which the worker steps when getting in or out of the vehicle, the step being provided at an outer side of a floor of the driving unit with respect to a left-and-right direction of the vehicle-body; a fuel tank provided below the floor so as to be adjacent to the step; and a fuel tank supporting bracket which supports the fuel tank from below, wherein the step has an upper side step part, and a lower side step part, the upper side step part is attached to the floor, and the lower side step part is attached to the fuel tank supporting bracket.

Abstract: A tractor according to an embodiment of the present invention includes a first exhaust gas treatment unit, a second exhaust gas treatment unit, a urea water tank, and a urea water pump. The first exhaust gas treatment unit is provided above an engine inside a hood. The second exhaust gas treatment unit is provided laterally outside one of right and left sides of the hood, and uses urea water to further treat exhaust gas purified by the first exhaust gas treatment unit. The urea water tank is provided laterally outside another of right and left sides of the hood, and stores therein the urea water. The urea water pump is provided behind the second exhaust gas treatment unit, and supplies the urea water stored in the urea water tank to the second exhaust gas treatment unit.

Abstract: A working vehicle includes: a power transmission device which selects a four-wheel drive state and a two-wheel drive state; a hydraulic continuously variable transmission device which includes a trunnion arm displaceable to a forward movement position, a neutral position, and a backward movement position; a pedaling operation detection unit which detects a pedaling operation for a brake pedal; and a control unit which performs a process of moving the trunnion arm to the neutral position by controlling an actuator when the pedaling operation detection unit detects the pedaling operation and which sets the operation speed of the actuator to be slow in the four-wheel drive state during the process compared to the two-wheel drive state.

Abstract: A tractor is provided. The tractor includes step brackets that are attached to a transmission case forming a vehicle body and that supports a step, a heat shield plate that is projected upward from a front section of the transmission case, fuel tank stays that extend downward from a lower section of the heat shield plate and that are attached to the fuel tank. The tractor also includes fenders serving as mud guards; and mud guard covers attached to the step brackets. The fuel tank stays are attached to the step brackets. The mud guard covers are attached to the fenders and the fuel tank.