Hitachi Construction Machinery Co., Ltd.

Naokazu Oda

Katsuhiko Shimizu

Akihiro Nakamura

Hidefumi Ishimoto

Masatsugu Arai

Yoichi Kowatari

Michio Fushiki

Yoshihiro Inanobe

Tsuyoshi Oue

Provided is a dump truck that includes an engine () and an ECU () controlling the engine () and that performs a predetermined operation after arriving at a destination. The ECU () is configured to makes larger an engine power suppression amount on a route leading the dump truck to the destination as a work waiting time that is a prediction time elapsing from an arrival of the dump truck at the destination to a start of the operation by the dump truck is longer and as an engine load of the dump truck is lower.

Haulage vehicle

This invention has an object to assist for traveling operation of a self-propelled industrial machine to display underneath image of the self-propelled industrial machine on a monitor of a display device mounted in a operator's cab. The display device of the self-propelled industrial machine according to the present invention is provided for a dump truck, which comprises cameras having field of view to underneath of the dump truck, a symbol image storage section to store a symbol image which is symbolized the dump truck, a superposing process section to make transparent with a predetermined transparent ratio in the symbol image as a transparent region and to superpose an image taken by the camera on the area corresponding to the transparent region as underneath image, and a monitor mounted in a cab of the dump truck for displaying the symbol image composed by the superposing process section.

Display device for self-propelled industrial machine

A vehicle status is judged with respect to whether the following conditions are met: the shift position of a shift leveris F or R (condition 1); the brakes are inactive (condition 2); the vehicle stands still (condition 3); the accelerator pedal is depressed equal to or less than &#x3b4; (condition 4); and the rotational speed of the engine is equal to or less than a medium rotational speed (condition 5). The engine is controlled such that the rotational speed is set to a minimum if conditions 1, 2, and 4 are met and condition 3 is not met or if condition 1 is met and condition 2 is not met; and the rotational speed is set to the medium rotational speed if conditions 1, 2, 3, and 5 are met or if conditions 1, 2, and 5 are met and conditions 3 and 4 are not met.

Engine rotation control system

Provided is a haulage vehicle having an air cleaner that is realistic from the viewpoints of fabrication steps and cost aspect. An air cleaner () arranged in a haulage vehicle is provided with a swirling flow generator (), a separator () and an outer cylindrical casing (). The swirling flow generator has a fixed shaft () and a plurality of guide blades () arranged and shifted from one another over a predetermined angle in a direction in which the guide blades rotate about the fixed shaft, and by the plurality of guide blades, a swirling flow of cooling air is generated. The separator has a flange () attached on and along an inner peripheral wall of the outer cylindrical casing (), an inner cylindrical member () arranged on an outer edge of a center bore of the flange, and a collection pocket (). Dust contained in the cooling air is taken by the swirling flow into a space between the inner cylindrical member and the outer cylindrical casing and is allowed to accumulate in the collection pocket.

Growing community of inventors

Tsuchiura, Japan

Naokazu Oda