Yanmar Co., Ltd.

Hideki Seino

Masao Nagata

Yasuyuki Oyamada

Takahiro Ikeda

Takuzo Kawamura

Mineaki Ogata

Takaaki Kuroda

Masami Kondou

Takao Matsumoto

Yoshihiro Miyazaki

Kondou Masami

Upper rotating body for an excavator

Excavator

A conventional solid protection device disposed on an exposed side of a cylinder for actuating a working device had a possibility of being permanently deformed by contacting an obstacle so as to be prevented from sliding properly corresponding to the telescopic movement of the hydraulic cylinder. An object of the invention is to provide a hardly deformable protection device. To protect an exposed side of a cylinder for a working device, a protection device includes a guard member and a slide guide into which guard member is telescopically fitted. Slide guide is attached to a cylinder tube, and a tip of guard member is attached to a tip of piston rod. Guard member is a flat plate made of spring steel. A width of guard member is larger than a diameter of the piston rod. Notches are provided on lateral opposite sides of a basic side end of guard member. Sliders are fitted to respective notches. The top of guard member is bent into a roll-shape so as to serve as a pivotal portion.

Protection device for cylinder

A rotation table frame for a working vehicle including, a portion rearward of both sides of the rotation table frame being substantially within a width of a traveling device and circular in a plan view, a front portion of the rotation table frame is rectilinearly cut in a left-right direction in the plan view, and the rotation table frame has a stepped portion formed at a right side relative to the advancement direction and recessed rearward.

Swing working vehicle

An object is to provide a construction machine containing an engine () and a heat exchanger () in a bonnet (), adapted for easy cleaning of a side of the heat exchanger () toward a cooling fan. A space () into which a hand can be put is provided between a cooling fanattached to the engine () and the heat exchanger () arranged so as to face to the cooling fan (). A part covering a region from the cooling fan () to the heat exchanger () in the bonnet () from above and sides includes a separate cover (). An opening part having a guard () is provided through a portion of the cover (), the portion facing to the heat exchanger (). The cover () is configured to be openable and closable. The cooling fan () is adapted to be of a discharge type. A plurality of the heat exchangers are arranged in a same plane.

Construction machine

Growing community of inventors

Chikugo, Japan

Hideki Seino