Komatsu Corporation

Osamu Yatsuda

Koichi Nakazawa

Kazushi Nakata

Hiroaki Takeshima

Takeshi Yoshikawa

Naoya Akiyama

Masahiro Ikeda

Kuniaki Nakada

Toshio Ibuki

Shinichi Otaka

A controller of a crawler type work machine controls left and right steering clutches, left and right steering brakes, and a turning motor to cause the crawler type work machine to turn in either a slow turning mode or a pivot turning mode. The controller executes a hydraulic fluid amount control to reduce a hydraulic fluid amount supplied from a hydraulic pressure supply unit to the turning motor and to increase the hydraulic fluid amount supplied from the hydraulic pressure supply unit from the hydraulic pressure supply unit to the work implement cylinder when the work implement cylinder is driven while the turning motor is being rotated.

Crawler-type work machine

A crawler-type work machine includes left and right steering brakes configured to brake left and right output shafts, a turning motor configured to produce a rotation speed difference between the left and right output shafts, work implement cylinders configured to drive a work implement attached to a vehicle body, a hydraulic pressure supply unit configured to supply hydraulic fluid to the turning motor and the work implement cylinders, and a controller configured to control the hydraulic pressure supply unit. The controller is configured to execute a hydraulic fluid amount control in order to reduce the hydraulic fluid amount supplied from the hydraulic pressure supply unit to the turning motor when the work implement cylinders are driven while the turning motor is rotating.

A system includes a processor and a display. A work machine includes a vehicle body and a work implement attached to the vehicle body. A camera captures a surroundings image in a traveling direction of the work machine. The processor acquires image data indicative of the surroundings image. The processor synthesizes a guide display and the surroundings image and generates an image including the surroundings image and the guide display. The display displays the image including the surroundings image and the guide display based on a signal from the processor. The system may further include the work machine and the camera.

System and method for work machine

A system includes a processor and a display. A plurality of cameras capture surroundings images of a work machine. The processor acquires image data indicative of the surroundings images. The processor synthesizes the surroundings images and generates a panorama moving image from viewpoints that move around the work machine. The display displays, based on a signal from the processor, the panorama moving image from the viewpoints that move around the work machine. The system may include the cameras and the work machine.

A system includes a processor and a display. The processor acquires shape data indicative of a shape of the surroundings in a traveling direction of a work machine. The processor generates a guide line. The guide line is disposed spaced from the work machine. The guide line indicates the shape of the surroundings in the traveling direction of the work machine. The processor synthesizes a surrounding image and the guide line and generates an image including the surroundings image and the guide line. The display displays the image including the surroundings image and the guide line based on a signal from the processor. The system may further include the work machine, a camera that captures the surrounding image, and a sensor that measures the shape of surroundings.

An engine compartment cover for a work machine includes left and right-hand side covers for covering the sides of an engine, and a hood for covering the top of the engine. The engine compartment cover serves to enclose the engine and demarcate an engine compartment and is capable of suppressing the noise at the operator's ear level caused by the engine operating noise passing through the engine compartment cover as far as possible, whereby the level of quietness in the operator cab can be improved. In the engine compartment cover for a work machine, the hood has a box-type structure including an exterior top plate, side plates surrounding the whole perimeter of the exterior top plate, and a bottom plate opposed to the exterior top plate, and air inlet holes are provided in the side plates only, whilst an air outlet hole is provided in the bottom plate only, in such a manner that external air is drawn into the interior of the hood via the air inlet holes and air is introduced into the engine compartment via the air outlet hole.

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Hirakata, Japan

Osamu Yatsuda