Komatsu Corporation

Komatsu Mec Kabushiki Kaisha

Masamichi Ueda

Mitsuhiro Shimazu

Satoru Nishimura

Atsushi Nagato

Takumi Nagahara

Jun Sasaki

Kenji Kooriyama

Yuuichi Iwamoto

A working machine includes: an operation state detection unit configured to detect a physical amount output according to an operation of an operation lever; a time integration unit configured to calculate a time integration value by performing time integration of the physical amount; a determination unit configured to cause the time integration value and a predetermined operating angle of an excavating and loading mechanism associated with the operation of the operation lever to correspond to each other, and to determine that the operation of the operation lever has been performed at a time the time integration value becomes a predetermined integration value or more; and a counting unit configured to count at a time operations of the excavating and loading mechanism determined by the determination unit are performed in a predetermined order, number of times of excavating and loading work.

Working machine and method of measuring work amount of working machine

A work machine includes: an operation state detection unit detecting a physical amount output; a time integration unit calculating a time integration value; a determination unit determining that the operation of the operation lever is performed at a time the time integration value is not smaller than a predetermined integration value; a counting unit counting number of a series of the operations of the excavation-loading mechanism performed in a predetermined order as one series of the excavation-loading work; and a specific state detection unit detecting a specific operation state not related to the series of operations of the excavation-loading mechanism in a state in which an operation of the excavation-loading mechanism related to the series of excavation-loading work can be performed, and at a time the specific operation state is detected, the counting unit resets or corrects counting processing of the number of times of the series of excavation-loading work.

Work machine and work amount measurement method in work machine

It is a subject of the present invention to provide a hydraulic shovel concurrently used for crane operations in which an operator may immediately be ascertained of conditions during crane operations as well as dangerous conditions occurring on the implement or the vehicle body so that operations may be performed in a stable and rapid manner, this being achieved by a hydraulic shovel concurrently used for crane operations which comprises an implement including a boom, an arm, a bucket and a hook for enabling crane operations, which further comprises a monitor device including a monitor screen, wherein a parameter display portion for displaying parameters related to load factors of safe-working load, an engine condition display portion for displaying engine conditions and an alarm information display portion for displaying alarm information are provided on the monitor screen during crane operations, wherein a plurality of display items of the alarm information display portion may be sequentially switched and displayed, and wherein the parameter display portion is turned into an alarm color when the load factor for safe-working load is within a dangerous area.

Hydraulic shovel concurrently used for crane operations

A display device that has a display screen is disclosed that has the ability to prevent reflections of the display screen from appearing on glass, without lowering the visibility of a display portion of the display screen. The brightness of the display color of either the background portionon a display screenor the background portionof such one of display portionsandas occupies the larger area of the lit portion of the display screenis changed according to the control of a control switch. If the brightness of the display color of the background portionis lowered (from the 'thin light blue' to the 'thick light blue', for example) at the nighttime, its reflection on the glass around a cabincan be reduced without lowering the luminance of the display screen. Alternatively, the saturation or hue of the display color can be changed to obtain a similar effect.

Growing community of inventors

Tokyo, Japan

Masamichi Ueda