Abstract: A controller determines that a signal from an operating device represents either a normal operation to manually control a blade or a trigger operation to automatically control the blade. The controller moves the blade so that the angle of the blade is changed in accordance with the operation of the operating device when the signal from the operating device is determined as representing a normal operation. The controller moves the blade until the angle of the blade reaches a predetermined target angle when the signal from the operating device is determined as representing the trigger operation while the bulldozer is traveling.

Abstract: In one embodiment, a charged particle beam writing apparatus includes a deflector deflecting a charged particle beam, a first correcting lens and a second correcting lens correcting a focus position of the charged particle beam, a focus correction amount calculator calculating a first correction amount for the focus position according to a change in a height position of a sample surface, and calculating a second correction amount for the focus position according to a change in shot size of the charged particle beam, a first DAC (digital to analog converter) amplifier applying a voltage for a ground potential based on the first correction amount to the first correcting lens, and a second DAC amplifier applying a voltage for a ground potential based on the second correction amount to the second correcting lens, an output of the second DAC amplifier being smaller than an output of the first DAC amplifier.

Abstract: A work vehicle includes a vehicle body, a travel device, a driving source, and a cooling device. The travel device is provided below the vehicle body. The driving source is disposed in a front part of the vehicle body. The driving source generates driving power for the travel device. The cooling device is disposed on one side in the vehicle width direction of the vehicle body and rearward of the driving source.

Abstract: A tractor includes an air cleaner and a passageway arranged to surround the air cleaner. Alternatively, tractor includes a maintenance equipment, an engine, a top plate covering the engine, and a floor section disposed at a position lower than the top plate and in a non-overlapping position with the engine as seen from above. In this tractor, the maintenance equipment is disposed on the floor section.

Abstract: A crawler belt-type tractor includes a vehicle body, a travel device, an engine, and a fuel tank. The travel device is attached to the vehicle body. The travel device includes a crawler belt. The engine generates driving power for driving the travel device. The fuel tank is disposed in a rear portion of the vehicle body. The fuel tank stores fuel for the engine. The rear end of the fuel tank is positioned rearward of the rear end of the crawler belt.

Abstract: A lift cylinder is attached to a center part of a vehicle body in a vehicle width direction. The lift cylinder causes a work implement to move up and down. A supporting member is attached to the center part of the vehicle body in the vehicle width direction and extends upward from the vehicle body. An imaging device is supported by the supporting member and captures images of a region in front of the vehicle body. A penetrating part is formed in the supporting member. The lift cylinder is disposed through the penetrating part.

Abstract: In one embodiment, a charged particle beam writing apparatus includes a deflector deflecting a charged particle beam, a first correcting lens and a second correcting lens correcting a focus position of the charged particle beam, a focus correction amount calculator calculating a first correction amount for the focus position according to a change in a height position of a sample surface, and calculating a second correction amount for the focus position according to a change in shot size of the charged particle beam, a first DAC (digital to analog converter) amplifier applying a voltage for a ground potential based on the first correction amount to the first correcting lens, and a second DAC amplifier applying a voltage for a ground potential based on the second correction amount to the second correcting lens, an output of the second DAC amplifier being smaller than an output of the first DAC amplifier.

Abstract: A tractor includes a vehicle body, an engine, a cooling device, a fan, and a first exterior member. The engine is disposed on the front side of the vehicle body. The cooling device is disposed behind the engine. The fan is arranged to produce cooling air for the cooling device. The first exterior member is disposed on the front side of the vehicle body and covers the engine, the cooling device, and the fan. A first discharge port is arranged to discharge the cooling air and is provided in a first side surface of the first exterior member. The front side surface is positioned on a first side in the vehicle left-right direction. The front surface of the first exterior member includes no opening.

Abstract: A ripper device includes a first cylinder, a shank, and an arm. The first cylinder includes a tube and a rod, and is disposed to extend and retract in the forward and backward direction in a plan view of the ripper device. The shank is disposed aligned with the first cylinder in the forward and backward direction in the plan view. The arm supports the shank and overlaps the tube of the first cylinder in the plan view.

Abstract: An access device is configured to be switched between a stored state in which an access member is stored in a vehicle body and a deployed state in which the access member is deployed. In the stored state, an exterior cover becomes a portion of an exterior surface of the vehicle body and the access member is stored inside the vehicle body. In the deployed state, the access member extends from the vehicle body toward a ground surface and the exterior cover is disposed on a back side of the access member.

Abstract: A tractor includes a vehicle body, an engine, a cooling device, a fan, and a first exterior member. The engine is disposed on the front side of the vehicle body. The cooling device is disposed behind the engine. The fan is arranged to produce cooling air for the cooling device. The first exterior member is disposed on the front side of the vehicle body and covers the engine, the cooling device, and the fan. A first discharge port is arranged to discharge the cooling air and is provided in a first side surface of the first exterior member. The front side surface is positioned on a first side in the vehicle left-right direction. The front surface of the first exterior member includes no opening.

Abstract: A crawler belt-type tractor includes a vehicle body, a travel device, an engine, and a fuel tank. The travel device is attached to the vehicle body. The travel device includes a crawler belt. The engine generates driving power for driving the travel device. The fuel tank is disposed in a rear portion of the vehicle body. The fuel tank stores fuel for the engine. The rear end of the fuel tank is positioned rearward of the rear end of the crawler belt.

Abstract: A tractor includes an air cleaner and a passageway arranged to surround the air cleaner. Alternatively, tractor includes a maintenance equipment, an engine, a top plate covering the engine, and a floor section disposed at a position lower than the top plate and in a non-overlapping position with the engine as seen from above. In this tractor, the maintenance equipment is disposed on the floor section.

Abstract: A ripper device includes a first cylinder, a shank, and an arm. The first cylinder includes a tube and a rod, and is disposed to extend and retract in the forward and backward direction in a plan view of the ripper device. The shank is disposed aligned with the first cylinder in the forward and backward direction in the plan view. The arm supports the shank and overlaps the tube of the first cylinder in the plan view.

Abstract: Lift cylinder is attached to a center part of a vehicle body in a vehicle width direction. The lift cylinder causes a work implement to move up and down. A supporting member is attached to the center part of the vehicle body in the vehicle width direction and extends upward from the vehicle body. An imaging device is supported by the supporting member and captures images of a region in front of the vehicle body. A penetrating part is formed in the supporting member. The lift cylinder is disposed through the penetrating part.

Abstract: An access device is configured to be switched between a stored state in which an access member is stored in a vehicle body and a deployed state in which the access member is deployed. In the stored state, an exterior cover becomes a portion of the an exterior surface of the vehicle body and the access member is stored inside the vehicle body. In the deployed state, the access member extends from the vehicle body toward the a ground surface and the exterior cover is disposed on the a back side of the access member.

Abstract: A ripper device for a work vehicle includes a first cylinder, a shank, and a second cylinder. The shank is actuated by the first cylinder and is aligned with the first cylinder in plan view. The second cylinder includes a proximal end attached to the work vehicle and a distal end on the opposite side from the proximal end. The second cylinder actuates the shank. The proximal end and the distal end of the second cylinder are located higher than the first cylinder in side view. The diameter of the first cylinder is larger than the diameter of the second cylinder.

Abstract: A work vehicle includes a vehicle body, a travel device, a driving source, and a cooling device. The travel device is provided below the vehicle body. The driving source is disposed in a front part of the vehicle body. The driving source generates driving power for the travel device. The cooling device is disposed on one side in the vehicle width direction of the vehicle body and rearward of the driving source.

Abstract: A restraining roller of a hook winch has a roller middle part and first and second roller end parts. The roller middle part is formed in a columnar shape. Each of the first and second roller end parts is formed in a roughly circular truncated cone shape. The widths of the first and second roller end parts are greater than the diameter of a wire rope. A difference in diameter between an inner end and outer end of each of the first and second roller end parts is less than the diameter of the wire rope. Taper angles of the first and second roller end parts are different from each other.

Abstract: A restraining roller (100) of a hook winch (8) has a roller middle part (101), a first roller end part (102) and a second roller end part (103). The roller middle part (101) is formed in a columnar shape, and each of the first roller end part (102) and the second roller end part (103) is formed in a roughly circular truncated cone shape. The widths of the first roller end part (102) and the second roller end part (103) are greater than the diameter of a wire rope (83). A difference in diameter between an inner end and outer end of each of the first and second roller end parts (102) and (103) is less than the diameter of the wire rope (83).