Olympus Optical Company, Ltd.

Komatsu Corporation

Hirofumi Miyamoto

Tsugiko Takase

Takao Okada

Shuzo Mishima

Katsuhiro Tsutsumi

Akira Yagi

Akitoshi Toda

Hiroko Ohta

Hiroko Ota

Tsuyoshi Kobayashi

Hiroshi Kajimura

Yohei Seto

Shuichi Ito

Nobuaki Sakai

Mitsugu Sakai

Yuzo Nakamura

Hisanari Shimazu

Kazuhiro Okamoto

Takaya Kobayashi

Yasushi Satoh

Yu Sakon

Mitsumori Hayashida

Yoshimitsu Enomoto

Toshiaki Matsuzawa

Takaaki Takenobu

Kayuhiro Okamoto

A work vehicle includes a vehicle body that includes a heat exchange room in which an opening portion facing a rear side is formed, and a rear passage extending in a width direction along a lower edge portion of the opening portion behind the opening portion, a cooling unit that is provided in the heat exchange room and includes a rear surface facing the rear side, and a blower unit that includes a fan rotationally driven and a movable shroud covering the fan from an outer peripheral side, and that is movable with respect to the vehicle body so that a movement region of the blower unit overlaps the rear passage between a closed position at which the blower unit faces the rear surface of the cooling unit from the rear side and an open position at which the blower unit exposes the rear surface of the cooling unit.

Work vehicle

A work vehicle comprising: a cab, an inside of which is a cockpit, having a window portion; a vehicle body having a passage on a periphery of the cab; a front lateral wiper provided so as to be rotatable around a first axis and along the window portion, and rotating around a second axis that extends in a different direction with the first axis in a movement range between a normal position that is in contact with the window portion and a rising position separated from the window portion; and a passage fence extending along an outer edge of the passage. The passage fence is configured to open upward with penetrating the passage fence inwardly and outwardly, and a part of the passage fence has an opening that includes the movement range of the front lateral wiper.

A work vehicle includes a vehicle body which has a passage including a rear passage, and a movable fence rotatably supported to the vehicle body around a rotation axis which extends in a vertical direction between a normal position which extends in a width direction of the vehicle body along a rear edge of the rear passage and a retreat position which extends backward from the vehicle body.

A work vehicle includes a blower unit rotatably supported to a vehicle body between a closed position and an open position, and a position adjustment portion configured to adjust a vertical position of the blower unit when the blower unit is at the closed position. The position adjustment portion includes a first plate that is provided on the vehicle body and includes a first through portion vertically penetrating, a second plate that is provided on the blower unit, vertically penetrates, and includes a second through portion communicating with the first through portion from below when the blower unit is at the closed position, and an adjustment bolt that includes a shaft portion inserted into the first through portion and the second through portion.

Work vehicle, and position adjustment method of movable portion of work vehicle

An exhaust gas aftertreatment device provided to an upper portion of an engine includes a right and left pair of first and second aftertreatment units, into which exhaust gas from the engine dividedly flows, each including a first exhaust gas emission control system on an upstream side, a second exhaust gas emission control system on a downstream side and a communication pipe through which the first and second systems are in communication with each other, the first and second systems, while being arranged side by side in a right-and-left direction, being oriented so that a flow direction of the exhaust gas flowing therein is parallel with a front-and-rear direction. When the device is seen in the front-and-rear direction, an outer linear envelope tangent to the first system and the communication pipe of each of the units extends upward while tilting toward a right-and-left center of the engine.

Construction machine

Two sets of assemblies are arranged such that a diesel particulate filter device of the assembly, a selective catalytic reduction device of the assembly, a selective catalytic reduction device of the assembly, and a diesel particulate filter device of the assembly are located next to each other in this order. Exhaust tubes are provided to extend upward from gas outlets of the selective catalytic reduction device of the assembly and the selective catalytic reduction device of the assembly. The two exhaust tubes are located on a virtual plane orthogonal to longitudinal directions of the selective catalytic reduction devices of the assemblies. Thereby, an air intake position for an engine can be easily set to a position from which exhaust gas from the engine is less likely to be taken in, in a configuration provided with two sets of assemblies.

Engine unit and work vehicle

In a working vehicle, an exhaust gas aftertreatment device is provided in an engine compartment that is adjacent to a cooling fan through which cooling air is supplied to a heat exchanger. The exhaust gas aftertreatment device includes a selective catalytic reduction device in which ammonia obtained from a urea aqueous solution is used as a reduction-causing agent. A urea aqueous solution pipe through which the urea aqueous solution is supplied is laid to the selective catalytic reduction device through the engine compartment. In the engine compartment, a pipeline-forming member having pipelines in which the urea aqueous solution pipe is installed. The cooling air sucked by a cooling fan flows into the pipelines.

Cooling structure for urea aqueous solution conduit

A ventilation structure of an engine compartment that houses an engine and is adjacent to a cooling fan that supplies cooling air to a heat exchanger in a form of a radiator is provided. A ventilation structure of the engine compartment includes: an exterior cover with which the engine and the cooling fan are covered; and a ventilation duct that includes an inner surface of the exterior cover, in which a first end of the ventilation duct is open in the engine compartment while a second end of the ventilation duct intercommunicates with a surrounding area of the cooling fan.

Ventilation structure for engine compartment

A fixing structure of a resin tank for stably keeping the resin tank being fixed includes: a first holder having a predetermined length and being disposed corresponding to a pressed portion of a resin tank; a biasing member that is disposed in the first holder; a pressing member that is supported by the first holder and projects toward the pressed portion by a biasing force of the biasing member; and a pair of rods respectively having first ends attached to both ends of the first holder in a longitudinal direction and second ends attached to a frame.

Fixing structure of resin tank

Two sets of assemblies are arranged such that a diesel particulate filter device of an assembly as a first set, a selective catalytic reduction device of the assembly as the first set, a selective catalytic reduction device of an assembly as a second set, and a diesel particulate filter device of the assembly as the second set are located next to each other in this order. Respective first and second connection pipes are routed through a region directly underneath an arrangement region where the two selective catalytic reduction devices and the like are arranged, and connected to the respective diesel particulate filter devices. Thereby, an engine unit and a work vehicle which facilitate connection between an engine and an exhaust gas treatment structure and can reduce a load on the first and second connection pipes due to vibration can be achieved.

A scanner system includes, a tube type piezoelectric scanner having a free end displaceable in X, Y and Z directions and supporting a sample at its free end, a driven for applying voltages to the scanner for displacing the sample an optical unit for optically detecting the X, Y and Z direction displacements of the free end and for outputting corresponding displacement signals, and a scan controller for computing correction signals based on the displacement signals so as to apply voltages which correct the voltage-displacement nonlinear characteristic of the scanner to the scanner and for supplying them to the driver.

Scanner system

A scanning probe microscope having a probe for scanning a sample, a piezoelectric unit finely movable in the X, Y and Z directions, and a probe control unit for controlling a fine movement amount of the piezoelectric unit in the Z direction in accordance with a detected interaction between the sample and the probe. A driving unit applies a continuously changing voltage to the piezoelectric unit to drive the piezoelectric unit in one of an X and Y direction to scan along a scan line, a displacement detection unit detects the displacement of the piezoelectric unit along the scan line, and a matching detection unit outputs a coincidence detection signal when the detected displacement of the piezoelectric unit along the scan line coincides with target displacement values corresponding to desired measurement points. A surface data acquiring unit acquires sample surface data based on the Z-directional fine movement amount of the piezoelectric unit each time the matching detection unit outputs a coincidence detection signal.

Scanning probe microscope capable of suppressing probe vibration caused

A scanner system includes, a tube type piezoelectric scanner having a free end displaceable in X, Y and Z directions and supporting a sample at its free end, a driver for applying voltages to the scanner for displacing the sample, an optical unit for optically detecting the X, Y and Z direction displacements of the free end and for outputting corresponding displacement signals, and a scan controller for computing correction signals based on the displacement signals so as to apply voltages which correct the voltage-displacement nonlinear characteristic of the scanner to the scanner and for supplying them to the driver.

A sample is mounted on a piezoelectric actuator and a cantilever provided with a probe is located thereabove. A bias voltage applying circuit supplies the sample with a potential difference V.sub.T and sends out a current signal I.sub.T representing the electric current flowing between the sample and the probe to a current detecting circuit. The current signal is converted into logI.sub.T in a logarithmic amplifier and given to a differential amplifier. A displacement detecting circuit is arranged above the cantilever for detecting the displacement of the free end of the cantilever due to the atomic force appearing between the sample and the probe and for sending a displacement signal Z.sub.TIP representing the displacement to another differential amplifier. The signals from the differential amplifiers are respectively fed to terminals of an analog switch. The analog switch selects a signal to be fed to a control circuit, which control circuit generates and transmits a signal V.sub.Z as a function of the signal it receives, thereby controlling the actuator.

Scanning probe microscope

A scanning tunneling microscope has an STM unit including a probe for scanning the surface of an object. The STM unit has at its outer peripheral surface a cylindrical enclosing member extending towards an object table. When the object is observed, the object table is elevated or the STM unit is lowered, so that the enclosing member is urged upon the table. The table and the STM unit constitute one body. As a result, relative movement between the object and the probe can be prevented, and also influence due to vibration can be prevented. In addition, the enclosing member isolates the object and the probe from the outside space, whereby electric noise, magnetic noise, sound noise and air flow are shielded. Thus, the influence due to external vibration can be reduced, and the stability is enhanced.

Growing community of inventors

Tokyo, Japan

Hirofumi Miyamoto