Title:
BEARING FOR SHIP PROPULSION SHAFT
Document Type and Number:
WIPO Patent Application WO/2021/260965
Kind Code:
A1
Abstract:
Provided is a bearing for supporting the propulsion shaft of a ship, with which it is possible to form a water coating with excellent lubricating characteristics on a sliding surface between the bearing and the propulsion shaft, and which is excellent in wear resistance and is economical. A bearing according to the present invention supports the propulsion shaft of a ship and includes, on an inner peripheral surface of a cylindrical shell, a sliding layer and an elastic layer in this order in the radial direction from the cylinder center, wherein the sliding layer has: a load action portion which is on the lower surface side of the inner peripheral surface of the shell and on which a load of the propulsion shaft acts, the center angle θ thereof being in a range of θ=60°-180° with the axis of symmetry being the vertical axis; and a cooling action portion which opposes the load action portion and is provided with a plurality of required water cooling grooves on both ends being the first and last. The vertical axis refers to the axis of symmetry of a lateral cross section of the shell parallel to the center of gravity direction of the propulsion shaft.
Inventors:
KACHU YOSHIMASA (JP)
YOMO MASATAKA (JP)
HARADA KOUHEI (JP)
YOKOGAKI KENJI (JP)
YOMO MASATAKA (JP)
HARADA KOUHEI (JP)
YOKOGAKI KENJI (JP)
Application Number:
PCT/JP2020/043494
Publication Date:
December 30, 2021
Filing Date:
November 20, 2020
Export Citation:
Assignee:
MIKASA CORP (JP)
International Classes:
F16C17/02; B63H23/36; F16C33/20
Foreign References:
| JP2004066977A | 2004-03-04 | |||
| JP2009103307A | 2009-05-14 |
Other References:
LITWIN, W.: "Experimental research on water lubricated three layer sliding bearing with lubrication grooves in the upper part of the bush and its comparison with a rubber bearing", TRIBOLOGY INTERNATIONAL, vol. 82, 2015, pages 153 - 161, XP055896091, DOI: 10.1016/j.triboint. 2014.10.00 2, ISSN 0301-679X
SAITOU, TOSHIMASA: "Lubricating performance of segment-type seawater stern tube bearing", JOURNAL OF THE JAPAN INSTITUTION OF MARINE ENGINEERING, vol. 42, no. 4, 2007, pages 700 - 705, XP055896094, ISSN: 1884-3778, DOI: 10.5988/jime.42.4_700
UNO, AKIO: "New segment type stern tube bearing for sea water lubrication system - Split type rubber bearing", JOURNAL OF THE JAPAN INSTITUTION OF MARINE ENGINEERING, vol. 47, no. 6, 1 November 2012 (2012-11-01), pages 878 - 881, XP055896097, ISSN: 1884-3778, DOI: 10.5988/jime.47.878
KIKKAWA, FUMITAKA ET AL.: "Tribology of seawater lubricated plain bearings - Application to propulsion system for ship", JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS, vol. 60, no. 12, 15 December 2015 (2015-12-15), pages 784 - 790, ISSN: 2189- 9967, DOI: 10.18914/tribologist.60.12_784
KIKKAWA FUMITAKA ET AL.: "Study on reliability improvement of water lubricated bearing", 2009, pages 1 - 119
KIKKAWA, FUMITAKA: "Ship propulsion system seawater lubrication bearing technology", vol. 30, no. 6, 10 June 2016 (2016-06-10), pages 21 - 23, ISSN: 0914- 6121
BARSZCZEWSKA, A.: "Experimental research on insufficient water lubrication of marine stern tube journal bearing with elastic polymer bush", POLISH MARITIME RESEARCH, vol. 27, no. 4, 2020, pages 91 - 102, XP055896103, ISSN: 1233-2585, DOI: 10.2478/pomr-2020-0069
SAITOU, TOSHIMASA: "Lubricating performance of segment-type seawater stern tube bearing", JOURNAL OF THE JAPAN INSTITUTION OF MARINE ENGINEERING, vol. 42, no. 4, 2007, pages 700 - 705, XP055896094, ISSN: 1884-3778, DOI: 10.5988/jime.42.4_700
UNO, AKIO: "New segment type stern tube bearing for sea water lubrication system - Split type rubber bearing", JOURNAL OF THE JAPAN INSTITUTION OF MARINE ENGINEERING, vol. 47, no. 6, 1 November 2012 (2012-11-01), pages 878 - 881, XP055896097, ISSN: 1884-3778, DOI: 10.5988/jime.47.878
KIKKAWA, FUMITAKA ET AL.: "Tribology of seawater lubricated plain bearings - Application to propulsion system for ship", JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS, vol. 60, no. 12, 15 December 2015 (2015-12-15), pages 784 - 790, ISSN: 2189- 9967, DOI: 10.18914/tribologist.60.12_784
KIKKAWA FUMITAKA ET AL.: "Study on reliability improvement of water lubricated bearing", 2009, pages 1 - 119
KIKKAWA, FUMITAKA: "Ship propulsion system seawater lubrication bearing technology", vol. 30, no. 6, 10 June 2016 (2016-06-10), pages 21 - 23, ISSN: 0914- 6121
BARSZCZEWSKA, A.: "Experimental research on insufficient water lubrication of marine stern tube journal bearing with elastic polymer bush", POLISH MARITIME RESEARCH, vol. 27, no. 4, 2020, pages 91 - 102, XP055896103, ISSN: 1233-2585, DOI: 10.2478/pomr-2020-0069
Attorney, Agent or Firm:
TSURUKAME Kuniyasu (JP)
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