Kubota Corporation

Hiroya Hanano

Yuji Fukuda

Keigo Honda

Jun Tomita

Daiki Abe

Yuya Konishi

Takanori Matsumoto

Shoichi Kawano

Tetsuo Ishioka

Akira Tsuda

Tomoyuki Nomura

Manabu Yamanishi

Syunryou Hayashida

A hydraulic system for a working machine, includes an operation member, an operation valve to change an output pressure of an operation fluid in accordance with operation of the operation member, a hydraulic device to be activated by the operation fluid outputted from the operation valve, a first fluid tube coupling the operation valve to the hydraulic device, and a bleed circuit connected to the first fluid tube and configured to output the operation fluid in the first fluid tube. The first fluid tube includes a first section fluid tube arranged in a section between the operation valve and a coupling portion coupling the first fluid tube to the bleed circuit, and a second section fluid tube arranged in a section between the coupling portion and the hydraulic device, the second section fluid tube having an inner diameter different from an inner diameter of the first section fluid tube.

Hydraulic system for working machine

The present invention is intended to provide a working machine allowing to form a large opening angle of an equipment cover while avoiding an obstacle even existing in front thereof. A rotating base is installed on a travelling machine body which includes right and left travelling devices, wherein an operation seat and vehicle equipment are arranged in the right and left, an equipment cover for covering the vehicle equipment is openably and closably provided, and a front lower portion of the equipment cover is pivotally supported on the rotating base via a lateral shaft. The lateral shaft of the equipment cover is inclined rearward from one end which is positioned in a side of the operation seat to the other end which is positioned in a side of a side portion of the rotating base.

Working machine

A variable displacement hydraulic motor having a swash plate angle adjusting structure. This hydraulic motor has a main case, a rotary shaft rotatably supported in the main case, a plurality of cylinder blocks rotatable with the rotary shaft and including axial plungers, a swash plate member for contacting distal ends of the plungers, pivot shafts for pivotally connecting the swash plate member to the main case such that the swash plate member has a pivoting angle adjustable relative to the main case, and a first and a second hydraulic cylinders arranged at opposite sides of the pivot shafts as seen in a direction parallel to the rotary shaft. The first and second hydraulic cylinders are secured in a region of the main case opposed to the cylinder blocks across the swash plate member. The hydraulic cylinders are operable to contact the swash plate member to adjust the pivoting angle thereof.

Structure for adjusting swash plate angle of a variable displacement

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Osaka, Japan

Hiroya Hanano