Abrégé

A gyroscope (1) for an anti-roll stabilizer for a seacraft is described, comprising: a flywheel (3), mounted on a shaft (4) having a first end (41) and a second end (42) which is opposite to said first end (41) wherein the ends of the shaft (4) are supported by pairs of angular contact ball bearings arranged in tandem, with an overall "O" configuration, and an adjustable preload member (7) to axially push the outer rings (832, 842) of the angular contact ball bearings (83, 84) and thereby to preload all the bearings of the gyroscope (81, 82, 83, 84).

Classes IPC  ?

• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes
• F16C 25/08 - Roulements à billes ou à rouleaux à autoréglage

Abrégé

A gyroscope (1) for an anti-roll stabilizer for a seacraft is described, comprising: a flywheel (3), mounted on a shaft (4) having a first end (41) and a second end (42) which is opposite to said first end (41) wherein the ends of the shaft (4) are supported by pairs of angular contact ball bearings arranged in tandem, with an overall "O" configuration, and an adjustable preload member (7) to axially push the outer rings (832, 842) of the angular contact ball bearings (83, 84) and thereby to preload all the bearings of the gyroscope (81, 82, 83, 84).

Classes IPC  ?

• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes
• F16C 25/08 - Roulements à billes ou à rouleaux à autoréglage

Abrégé

A gyroscope for an anti-roll stabilizer for a seacraft is provided, comprising a housing, arranged to be mounted on a suspension allowing the housing to be oscillated around a first rotation axis, a flywheel, positioned inside the housing, comprising a flywheel body connected to a shaft arranged to rotate around a second rotation axis, the shaft of the flywheel having a first and a second end, a first bearing pack rotationally connecting the first end of the shaft to the housing, a second bearing pack rotationally connecting the second end of the shaft to the housing, an electric motor comprising a rotor and a stator, wherein the stator of the electric motor is connected to the housing and the rotor of the electric motor is connected of the flywheel, and the rotor is located radially at a greater distance from the second rotation axis than the stator.

Classes IPC  ?

• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes
• H02K 7/02 - Masses additionnelles pour augmenter l'inertie, p. ex. volants
• H02K 7/08 - Association structurelle avec des paliers

Abrégé

A gyroscope for an anti-roll stabilizer for a seacraft is provided, comprising a housing, arranged to be mounted on a suspension allowing the housing to be oscillated around a first rotation axis, a flywheel, positioned inside the housing, comprising a flywheel body connected to a shaft arranged to rotate around a second rotation axis, the shaft of the flywheel having a first and a second end, a first bearing pack rotationally connecting the first end of the shaft to the housing, a second bearing pack rotationally connecting the second end of the shaft to the housing, an electric motor comprising a rotor and a stator, wherein the stator of the electric motor is connected to the housing and the rotor of the electric motor is connected of the flywheel, and the rotor is located radially at a greater distance from the second rotation axis than the stator.

Classes IPC  ?

• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes
• H02K 1/2786 - Rotors externes

Abrégé

Method of servicing or maintaining a gyroscope of an anti-roll stabilizer onboard of a seacraft. The method comprising a step of providing a seacraft provided with an anti-roll stabilizer. The stabilizer comprises a gyroscope comprising a container housing a rotor including a flywheel and a flywheel shaft that is rotatably mounted within said container by means of two support devices placed inside said container and arranged to support a respective end of said flywheel shaft so as to allow the relative rotation of said shaft with respect to said container. The container comprises a base portion mounted on a suspension held by a frame of the anti-roll stabilizer so as to be able to oscillate around a first axis transverse with respect to a rotation axis of the flywheel shaft. The container further comprises two end portions removably connected to said base portion. The method further comprising the steps of: removing one of the end portions from the base portion onboard of the seacraft; placing back said removed end portion and reconnecting said end portion with the base portion onboard of the seacraft; and pumping out air of the interior of the container of the gyroscope onboard of the seacraft after the container of the gyroscope has been reassembled.

Classes IPC  ?

• G01C 19/16 - SuspensionsPaliers
• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes

Abrégé

Method of servicing or maintaining a gyroscope of an anti-roll stabilizer onboard of a seacraft. The method comprising a step of providing a seacraft provided with an anti-roll stabilizer. The stabilizer comprises a gyroscope comprising a container housing a rotor including a flywheel and a flywheel shaft that is rotatably mounted within said container by means of two support devices placed inside said container and arranged to support a respective end of said flywheel shaft so as to allow the relative rotation of said shaft with respect to said container. The container comprises a base portion mounted on a suspension held by a frame of the anti-roll stabilizer so as to be able to oscillate around a first axis transverse with respect to a rotation axis of the flywheel shaft. The container further comprises two end portions removably connected to said base portion. The method further comprising the steps of: removing one of the end portions from the base portion onboard of the seacraft; placing back said removed end portion and reconnecting said end portion with the base portion onboard of the seacraft; and pumping out air of the interior of the container of the gyroscope onboard of the seacraft after the container of the gyroscope has been reassembled.

Classes IPC  ?

• G01C 19/16 - SuspensionsPaliers
• G01C 19/20 - SuspensionsPaliers dans un fluide
• G01C 19/38 - Gyroscopes rotatifs pour indiquer une direction dans le plan horizontal, p. ex. compas gyroscopiques avec action de recherche du nord par des moyens autres que magnétiques, p. ex. gyrocompas utilisant la rotation de la terre
• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes

Abrégé

Method of servicing or maintaining a gyroscope of an anti-roll stabilizer onboard of a seacraft. The method comprising a step of providing a seacraft provided with an anti-roll stabilizer. The stabilizer comprises a gyroscope comprising a container housing a rotor including a flywheel and a flywheel shaft that is rotatably mounted within said container by means of two support devices placed inside said container and arranged to support a respective end of said flywheel shaft so as to allow the relative rotation of said shaft with respect to said container. The container comprises a base portion mounted on a suspension held by a frame of the anti-roll stabilizer so as to be able to oscillate around a first axis transverse with respect to a rotation axis of the flywheel shaft. The container further comprises two end portions removably connected to said base portion. The method further comprising the steps of: removing one of the end portions from the base portion onboard of the seacraft; placing back said removed end portion and reconnecting said end portion with the base portion onboard of the seacraft; and pumping out air of the interior of the container of the gyroscope onboard of the seacraft after the container of the gyroscope has been reassembled.

Classes IPC  ?

• B63B 39/04 - Installations pour diminuer le tangage, le roulis ou autres mouvements similaires indésirables du navireAppareils pour indiquer l'assiette du navire réduisant les mouvements du navire par l'effet direct de gyroscopes
• G01C 19/02 - Gyroscopes rotatifs
• G01C 19/16 - SuspensionsPaliers