Kubota Corporation

Shusaku Yamaguchi

Kosuke Oyama

Arinobu Ishida

Ryoichi Nishi

Masataka Takagi

Tomiho Tanaka

Naoya Tsuda

Naoki Onishi

Tsuyoshi Gono

Keiji Takahashi

Naoya Muramoto

Susumu Takeoka

Akiyoshi Uchijima

Masahiro Sugioka

Yoichi Sugihara

Naoya Nihei

The work vehicle includes a vehicle body provided with a travel device; a prime mover provided in the vehicle body; a transmission device capable of speed-changing a driving force from the prime mover and transmitting the driving force to the travel device; a transmission case housing the transmission device and being filled with lubricating oil; and a controller capable of switching between a warm-up operation mode in which a gear of the transmission device is rotated in a state in which transmission of power from the transmission device to the travel device is blocked and a travel operation mode in which the gear is rotated in a state in which the power is transmitted from the transmission device to the travel device.

Work vehicle

A detection link of a spill guard link mechanism is pivoted and connected to a bucket bracket in a position proximate to a bucket pivot support axis rotatably supporting a bucket and above a lower surface of a boom.

Front loader

A front loaderis connected to a front portion of a tractorhaving a tractor body. The front loaderincludes mounting framesarranged at right and left sides of the tractor body, boomspivotally supported by upper ends of the mounting framesto be vertically swingable, and a working implementswingably connected to distal ends of the booms. A control valveis disposed outside the tractor bodyand rearwardly of one of the mounting framesfor controlling hydraulic cylinders

Valve mounting structure for a loader work vehicle, and a loader work vehicle

The invention provides a loader work machine with improved front visibility and improved aesthetic appearance. The loader work machine includes a self-propelled machine body, a work device having a boom, a boom cylinder, and a side frame for vertically pivotally supporting base portions of the boom and the boom cylinder, and a frame unit for attaching the work device to the self-propelled machine body. The frame unit has a support platform projecting laterally outward from the self-propelled machine body and a main frame mounted erect on the support platform for supporting and connecting a lower portion of the side frame. An accumulator is connected to the boom cylinder for absorbing shock occurring during a vertical pivotal movement of the work device and this accumulator is attached to the frame unit.

Loader work machine

There is provided a boom assembly bent at the center in a longitudinal direction so as to form a round shape protruding upward when seen from the side, comprising; a front boom sub assembly (), the front boom sub assembly constituting the front of the center in the longitudinal direction of said boom assembly; and a rear boom sub assembly (), the rear boom sub assembly constituting the rear of the center in the longitudinal direction of the boom assembly, wherein the front boom sub assembly () and the rear boom sub assembly () are symmetric when seen from the side, and portions from the midway positions in the longitudinal direction of the front boom sub assembly () and the rear boom sub assembly () to the center in the longitudinal direction of the boom assembly () have upper surfaces of arc shape protruding upward when seen from the side, and portions from the middles in the longitudinal direction of the front boom sub assembly () and the rear boom sub assembly () to ends in the longitudinal direction of the boom assembly () have upper surfaces of linear shape when seen from the side.

Boom assembly

A loader control device for controlling a loader implement attached to a tractor is disposed in a position adjacent a driver's seat and does not obstruct the driver boarding or alighting from the tractor. For this purpose, the tractor includes a vehicle body; a loader implement detachably attached to a front part of the vehicle body; a driver's seat mounted on the vehicle body; a steering device disposed forwardly of the driver's seat; a step laid between the driver's seat and the steering device; rear wheel fenders at opposite lateral positions of the driver's seat; and a shifting unit disposed between the driver's seat and one of the rear wheel fenders; wherein a mounting unit for mounting a loader control device for controlling the loader implement is provided in a forward position of an upper surface of the one of the rear wheel fenders.

Tractor

A loader work machine including a vehicle body, and a working implement having booms and boom cylinders and mounting frame units for attaching the working implement to a front portion of the vehicle body. Each of the mounting frame units includes a mounting plate fixed to the vehicle body, a support base projecting laterally outward from the mounting plate, a main frame erected on the support base, and a side frame for pivotally supporting proximal ends of one of the booms and one of the boom cylinders. The side frame includes right and left side plates and a connecting element for interconnecting the right and left side plates. The side frame is detachably attached to the main frame by engaging an engaging member disposed in a lower portion of the side frame with an engageable member of the main frame, and connecting a connecting member formed on the side frame to a connectable member formed on the main frame. The main frame is formed as a one-piece plate insertable between the right and left side plates.

Growing community of inventors

Sennan, Japan

Shusaku Yamaguchi