Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Hiroshi Kanki

Noriyuki Hayashi

Yutaka Ozawa

Hiroshi Suzuki

Taku Ichiryu

Takaya Futae

Yasushi Mori

Makoto Ozaki

Koichi Akagi

Zenichi Yoshida

Nariaki Seike

Tadao Yashiki

Hideaki Nishida

Yuichi Ikeda

Shinji Ogawa

Shigeki Morii

Kazuso Katayama

Tatsuya Wakisaka

Kazuyoshi Yasuda

Fumihiro Inoue

Shuji Oyagi

Chiaki Yasuda

Koji Takeshita

Koji Watanabe

Kazunari Fukuda

Atsuhiro Doyama

Yasukuni Kamimura

Yoshitsugu Nekomoto

Hisashi Tatsuke

A rotational bodyincludes a rotational shaft, an impeller, and a nut. The impeller includes a hub portionhaving a peripheral surfaceinclined to the axial direction of the rotational shaft and having an insert holein which the rotational shaft is inserted, and a blade portion. At least one of the rotational shaft or the insert hole of the hub portion has an interference fit portionfor fit between the rotational shaft and the impeller, where the outside diameter of the rotational shaft is larger than the inside diameter of the insert hole of the hub portion. The interference fit portion is formed in a region which does not include the largest outside diameter portionB where the hub portion has a largest outside diameter, with the rotational shaft and the impeller mating with each other.

Rotational body and method for manufacturing the same

An object is to provide a floating bush bearing device with excellent oscillation stability and small bearing loss. A floating bush bearing device which rotatably supports a rotation shaft includes: a bearing housing, a floating bush rotatably disposed between the rotation shaft and an inner circumferential surface of the bearing housing, in the bearing housing, and a bush side oil supply hole which is formed through the floating bush and is capable of supplying lubricating oil between the rotation shaft and the inner circumferential surface of the floating bush, the inner circumferential surface of the floating bush has a non-circular shape so that a gap portion is formed between the rotation shaft and the inner circumferential surface of the floating bush, the gap portion having a predetermined clearance or larger regardless of relative positions of the rotation shaft and the inner circumferential surface of the floating bush, and the bush side oil supply hole communicates with the gap portion.

Floating bush bearing device and supercharger including the same

A lifting load attitude controlling system includes a lifting load pivoting clutch (20) provided between a gyro frame (1) and a gimbal frame (6) for connecting and disconnecting therebetween. Also, a resetting rotating clutch is provided between a resetting rotation driving portion constituted of a resetting oblique rotation driving motor (19) for rotating a gimbal (8) upon returning the gimbal (8) at an initial position and a worm gear, and the gimbal (8) for connecting and disconnecting therebetween. Upon obliquely rotating the gimbal for returning to the initial position, the resetting rotating clutch is placed in the engaged or connected state and the lifting load pivoting clutch is placed in the disengaged or disconnected state. When the resetting rotation driving motor (19) is driven at this condition, a gyro moment is generated upon obliquely driving the gimbal toward the gyro frame (1) (lifting jig 4) via a variable constant torque motor (19) between the gyro frame (1) and a gimbal frame (6). However, since the gyro moment is much smaller than the inertia moment of the lifted load, it provides little influence relative to pivoting motion of the load.

Method and system for controlling attitude of lifting load utilizing

A vibration reducer for a diaphragm coupling is capable of suppressing axial vibrations as well as torsional vibrations. A diaphragm pack 3 is mounted between a diaphragm mount flange 2 provided on an intermediate shaft 1 serving as a drive shaft and a shaft flange 4 of another shaft serving as a driven shaft. An elastic arm 5 extends through the diaphragm pack 3 and is mounted to the diaphragm mount flange 2. The elastic arm 5 is a cylindrical member, whose circumferential portion is severed by slits formed by wire-cutting. Free ends 5a of the elastic arm 5 are expanded in the radial directions by centrifugal forces caused by rotation of a shafts and come into pressure-contact with the liner member 8 formed integrally within a cylindrical portion 7 of the shaft flange 4. A part of a torque is thereby transmitted via the pressure-contact portion, and rigidity in the axial direction of the elastic arm 5 is added to that of the diaphragm pack 3 to suppress vibrations. An alternative construction has a large pressure-contact force caused by centrifugal forces realized by making use of centrifugal weights 22, a centrifugal weight holder 23, and an elongated bolt 24.

Centrifugally operated axial and torsional vibration reducer for a

In a sealing device for a rotary machine of the type that an annular groove is provided in an inner circumferential surface of a through-hole of a stationary member through which a rotary body supported rotatably by a bearing device extends, gap spaces between the rotary body and the both side portions of the stationary member on the opposite sides of the annular groove are sealed by seal rings, and a seal fluid feed hole for feeding a sealing fluid into the annular groove is provided in the stationary member; improvements are made in that a vibration suppressing movable ring is accommodated within the annular groove, the movable ring is mounted to the stationary member so as to be movable only in a radial direction so that an outside annular gap clearance may be formed between an outer circumferential surface of the movable ring and an inner circumferential surface of the annular groove and also an inside annular gap clearance may be formed between an inner circumferential surface of an inner hole of the movable ring and an outer circumferential surface of the rotary body which extends through the inner hole, the inside gap clearance is divided into a plurality of arcuate gap clearance sections, and the respective arcuate gap clearance sections a formed in a wedge-like shape that is gradually narrowed towards the downstream side in the direction of rotation of the rotary body.

Vibration suppressing sealing device for a rotary machine

A bobbin holder shaft is journalled in a bobbin holder shaft support that is, in turn elastically supported relative to a fixed frame. When the support weighs more than the shaft plus the full amount of yarn to be wound thereon, and the lowest order resonant speed is below the operating speed, a high operating speed can be achieved without inducing a resonant vibration even though a pronounced band or ribbon appeared on the wound yarn ball. In a preferred embodiment, the elastic support is provided by axially spaced O-rings and an oil-filled reservoir defined axially between them.

Apparatus for supporting a bobbin holder shaft in a high speed winder

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Tokyo, Japan

Hiroshi Kanki