Hitachi Construction Machinery Co., Ltd.

Hitachi, Ltd.

Kcm Corporation

Satoshi Sekino

Satoru Kaneko

Noritaka Itou

Hiroyuki Kobayashi

Toshihiko Nakata

Manabu Edamura

Yukio Kembo

Takafumi Morimoto

Shuichi Baba

Masatoshi Yoshimura

Toru Kurenuma

Hisayoshi Hashimoto

Takami Kusaki

Fumiki Nakagiri

Tetsushiro Miura

Toshikazu Murai

Masahiro Watanabe

Hidekazu Moriki

Akinori Kamiya

Takashi Ikimi

Takatoshi Ooki

Noritaka Ito

Kazuo Ishida

Fujio Sato

Masaki Higurashi

Katsuhiko Tokuda

Hiroshi Utashiro

Kiyonobu Hirose

Toru Kikuchi

Toshio Kotaka

Nobuo Ito

Yasuharu Yamamoto

Hideki Fukuzawa

Yoshio Mizuno

Hiroyosi Itaya

Shigehiko Miyake

The work vehicleincludes a main controllerthat controls a travel driving force and a work driving force. The main controllerincludes a travel remaining time calculating unitthat calculates a remaining time until a target rise/run distance is reached as a travel remaining time t, a work remaining time calculating unitthat calculates a remaining time until a target arm angle is reached as a work remaining time t, a rise/run determining unitthat determines whether rise/run is being performed or not, a correction rate setting unitthat sets a travel correction rate ηthat adjusts a travel driving torque and a work correction rate ηthat adjusts a work driving torque based on the travel remaining time t, the work remaining time t, and the rise/run determination flag, and an engine torque distribution calculating unitthat calculates a travel driving torque command and a work driving torque command based on the travel correction rate ηand the work correction rate η.

Work vehicle apparatus for loading efficiency

A work vehicle includes: an engine; a hydraulic pump that is driven by the engine; hydraulic cylinders that are extended and contracted by pressurized fluid delivered from the hydraulic pump; a work device that is moved according to the extension/contraction operations of the hydraulic cylinders; a travel device that is driven independently of the work device; an electrically driven motor that is driven by electric power generated by the engine to operate the travel device; and a controller that controls the hydraulic cylinders and the electrically driven motor. The controller controls the output power of the hydraulic pump and the output power of the electrically driven motor by changing the distribution ratios of a first torque consumed by the work device and a second torque consumed by the travel device among torques output by the engine, on the basis of a reaction force received by the vehicle body.

Work vehicle having a controller that controls the hydraulic cylinders and the electrically driven motor on a basis of a distribution ratio of a first torque and a distribution ratio of a second torque

To provide a technique for reliably acquiring a required braking power during travel and for efficiently using a regenerative power generated during braking. A work vehicle calculates a regenerative power outputted from an electric motor and a target hydraulic driving power for driving a hydraulic pump, supplies the regenerative power to the generator motor operating as a motor and makes the generator motor consume the regenerative power in a case where the regenerative power is equal to or smaller than the target hydraulic driving power, and supplies the regenerative power to the generator motor operating as the motor and makes an exhaust brake consume a power equivalent to a difference between the regenerative power and the target hydraulic driving power in a case where the regenerative power is larger than the target hydraulic driving power.

Work vehicle

A hybrid wheel loader includes a control device () that estimates output power of an engine () and an electricity storage device () when the hybrid wheel loader is inferred on the basis of output values of detectors () to be traveling towards an object of excavation in order to perform an excavating work, and then, if the output power is less than target power considered necessary for the excavating work, accelerates the engine () to a target revolution speed while increasing the electric power supplied from the electricity storage device to a traveling motor (). Accordingly, power necessary for excavation can be drawn from the engine even when the engine revolution speed is low and there is a fear of power deficiency occurring at the time of the excavating work.

Hybrid wheel loader

This invention includes a hydraulic pump (), a working implement () having a lift cylinder () driven by a hydraulic fluid supplied from the hydraulic pump (), an operating device () for operating the working implement (), a traveling motor () for driving wheels, and a main controller (). When the lift cylinder () fails to operate despite an extending instruction being imparted to the lift cylinder () via the operating device (), the main controller () reduces a limit value for an increase rate of a torque required in the traveling motor () to a value smaller than that applied when the lift cylinder () operates. With this configuration, occurrence of wheel slip during lifting of an object to be carried can be reduced.

Construction vehicle

In the case of measuring a pattern having a steep side wall, a probe adheres to the side wall by the van der Waals forces acting between the probe and the side wall when approaching the pattern side wall, and an error occurs in a measured profile of the side wall portion. When a pattern having a groove width almost equal to a probe diameter is measured, the probe adheres to both side walls, the probe cannot reach the groove bottom, and the groove depth cannot be measured. When the probe adheres to a pattern side wall in measurements of a microscopic high-aspect ratio pattern using an elongated probe, the probe is caused to reach the side wall bottom by detecting the adhesion of the probe to the pattern side wall, and temporarily increasing a contact force between the probe and the sample. Also, by obtaining the data of the amount of torsion of a cantilever with the shape data of the pattern, a profile error of the side wall portion by the adhesion is corrected by the obtained data of the amount of torsion.

Scanning probe microscope

A vehicular automotive soil treating machine having a main frame structure provided on an automotive drive means to support thereon a soil feeding stage including at least a soil hopper and an additive hopper for feeding soil and an additive soil improving material, a soil processing stage including a soil processing trough which is internally provided with a mixing device for mixing soil and additive material while being transferred from one to the other end of the soil processing trough, and a processed soil discharging stage including a soil discharging conveyer for transferring processed soil of improved quality in a predetermined direction. The soil processing trough is provided with an inlet opening on the upper side of its fore end portion to receive soil and additive material therethrough, and an outlet opening on the bottom side of its rear end portion to discharge processed soil of improved quality toward the discharging conveyer.

Automotive soil treating machine

A vehicular soil treating machine having a base carrier with a crawler type vehicle drive, an upper rotary body rotatably mounted on the base carrier, and an excavation means mounted on the upper rotary body and equipped with a soil excavating bucket. Provided on the base carrier is an elongated continuous soil processing trough having a predetermined length in the longitudinal direction of the base carrier and internally provided with a tumbling/mixing means for uniformly mixing additive soil improving material into sand and soil which is fed from the excavation means. A soil hopper is provided over one end of the continuous processing trough, and an additive feed means is located behind the soil hopper to feed additive soil improving material to the continuous processing trough.

Soil improving machine with excavating means

Growing community of inventors

Ibaraki, Japan

Satoshi Sekino