A bulldozer includes a steering clutch, a steering brake, a hydraulic pump that discharges a lubricating oil, a first lubricating oil supply path, a second lubricating oil supply path, a third lubricating oil supply path, and a flow amount switching valve disposed on the second lubricating oil supply path. The first lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering clutch The second lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering brake. The third lubricating oil supply path supplies, to the steering brake, a portion of the lubricating oil that has passed through the steering clutch. The flow amount switching valve switches an amount of the lubricating oil supplied to the steering brake.

A bulldozer includes a steering clutch, a steering brake, a hydraulic pump that discharges a lubricating oil, a first lubricating oil supply path, a second lubricating oil supply path, a third lubricating oil supply path, and a flow amount switching valve disposed on the second lubricating oil supply path. The first lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering clutch The second lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering brake. The third lubricating oil supply path supplies, to the steering brake, a portion of the lubricating oil that has passed through the steering clutch. The flow amount switching valve switches an amount of the lubricating oil supplied to the steering brake.

There is disclosed an earth moving vehicle and a blade control assembly for an earth moving vehicle comprising a machine body, a push member comprising a first end pivotally mounted to the machine body for rotation about a lift axis and a blade pivotally attached to a second end of the push member for rotation about an angle axis. The assembly comprises a pair of linear actuators interconnected between the machine body and the blade. The blade is raised and lowered about the lift axis by respectively simultaneously retracting or extending both of said linear actuators and the blade is angled about the angle axis by extending or retracting a first of said linear actuators relative to a second of said linear actuators.

There is disclosed an earth moving vehicle and a blade control assembly for an earth moving vehicle comprising a machine body, a push member comprising a first end pivotally mounted to the machine body for rotation about a lift axis and a blade pivotally attached to a second end of the push member for rotation about an angle axis. The assembly comprises a pair of linear actuators interconnected between the machine body and the blade. The blade is raised and lowered about the lift axis by respectively simultaneously retracting or extending both of said linear actuators and the blade is angled about the angle axis by extending or retracting a first of said linear actuators relative to a second of said linear actuators.

An attachment pin assembly includes a pin body to be inserted into first through-holes of a drilling tool and a second through-hole of an adaptor, the first and second through-holes being arranged eccentrically with respect to each other; a bush portion provided on one end side of the pin body; a detachment prevention member of the bush portion screwed to one end of the pin body; and a stopper portion provided on the other end side of the pin body and configured such that a side surface portion arranged on the outside of the pin body in a radial direction thereof in the first through-hole is locked on an inner wall surface of the tooth forming the first through-hole to stop rotation of the pin body.

An attachment pin assembly includes a pin body to be inserted into first through-holes of a drilling tool and a second through-hole of an adaptor, the first and second through-holes being arranged eccentrically with respect to each other; a bush portion provided on one end side of the pin body; a detachment prevention member of the bush portion screwed to one end of the pin body; and a stopper portion provided on the other end side of the pin body and configured such that a side surface portion arranged on the outside of the pin body in a radial direction thereof in the first through-hole is locked on an inner wall surface of the tooth forming the first through-hole to stop rotation of the pin body.

An implement system for a machine includes a primary blade and a secondary blade coupled to the primary blade through a linkage mechanism such that the secondary blade is trailing the primary blade. The implement system includes an actuator which controls a movement of the secondary blade. The implement system includes at least one position sensor which generates signals indicative of a position of the primary blade and a position of the secondary blade. The implement system further includes a controller which is in communication with the primary blade, the secondary blade and the position sensor. The controller receives the signals indicative of the position of the primary blade and the position of the secondary blade. The controller operates the actuator to control the movement of the secondary blade based on the position of the primary blade and secondary blade.

A convertible box blade scraper apparatus includes a frame assembly including a first sidewall, a second sidewall, one or more shank support cross-members, a first blade support cross-member having a first scraper blade secured thereto, a second blade support cross-member extending between and secured to the first sidewall and the second sidewall, and having a second scraper blade and a leveling blade secured thereto, and a moldboard support cross-member, the moldboard support cross-member having a moldboard support longitudinal center axis. The apparatus further includes an elongated moldboard having an arc-shaped front surface that extends between a moldboard top edge and a moldboard bottom edge, the moldboard including one or more pivot arms rotatably coupled to the moldboard support cross-member to provide the moldboard with a pivot axis, wherein the pivot axis is coincident with the moldboard support longitudinal center axis, and further including a hitch assembly.

A convertible box blade scraper apparatus includes a frame assembly including a first sidewall, a second sidewall, one or more shank support cross-members, a first blade support cross-member having a first scraper blade secured thereto, a second blade support cross-member extending between and secured to the first sidewall and the second sidewall, and having a second scraper blade and a leveling blade secured thereto, and a moldboard support cross-member, the moldboard support cross-member having a moldboard support longitudinal center axis. The apparatus further includes an elongated moldboard having an arc-shaped front surface that extends between a moldboard top edge and a moldboard bottom edge, the moldboard including one or more pivot arms rotatably coupled to the moldboard support cross-member to provide the moldboard with a pivot axis, wherein the pivot axis is coincident with the moldboard support longitudinal center axis, and further including a hitch assembly.

A motorcycle fork for a lifting device includes an attachment member and a lift carriage. The attachment member includes a first hook plate, a second hook plate, a lower cross member and an upper cross member. The lower cross member is attached between the first and second hook plates. The upper cross member is attached between the first and second hook plates. The lift carriage includes a first side support, a floor plate and a second side support. The side support preferably includes a lift base portion and a tapered extension. A notch and slot are cut in the first and second lift base portions to receive the upper and lower cross beams. A first edge of the floor plate is attached to a bottom of the first side support and a second edge of the floor plate is attached to a bottom of the second side support.