US3405765A - Ship's propeller mounting - Google Patents

Ship's propeller mounting Download PDF

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Publication number
US3405765A
US3405765A US617540A US61754067A US3405765A US 3405765 A US3405765 A US 3405765A US 617540 A US617540 A US 617540A US 61754067 A US61754067 A US 61754067A US 3405765 A US3405765 A US 3405765A
Authority
US
United States
Prior art keywords
propeller
shaft
boss
flange
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US617540A
Other languages
English (en)
Inventor
Herbert Colin Wray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Mogul Engineering Ltd
Original Assignee
Glacier Metal Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Glacier Metal Co Ltd filed Critical Glacier Metal Co Ltd
Application granted granted Critical
Publication of US3405765A publication Critical patent/US3405765A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F16J15/008—Sealings comprising at least two sealings in succession with provision to put out of action at least one sealing; One sealing sealing only on standstill; Emergency or servicing sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/20—Hubs; Blade connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/38—Propulsive elements directly acting on water characterised solely by flotation properties, e.g. drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B63H2023/327—Sealings specially adapted for propeller shafts or stern tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • B63H2023/342—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts comprising couplings, e.g. resilient couplings; Couplings therefor

Definitions

  • ABSTRACT OF THE DISCLOSURE A marine propeller mounting in which the propeller has integral fixed blades on a hollow cylindrical boss with an internal integral flange disposed centrally under the roots of the blades and the flange of the boss is bolted to a radially-extending end flange on the shaft whereby the overhang of the weight of the propeller with respect to the shaft bearing is minimized.
  • the present invention relates to the mounting of ships propellers.
  • the propeller boss In conventional mountings the propeller boss is commonly fitted over the tapered end of the propeller shaft and secured by a nut. It is also known to attach a boss directly to an end flange on the propeller shaft.
  • the first of these mounting arrangements has a history of failure as evidenced by the records of classification societies throughout the world.
  • the whole of the propeller necessarily lies considerably aft of the stern hearing supporting the propeller shaft and of the outboard rotary seal surrounding the shaft.
  • the weight of the propeller thus imposes a heavy load on the bearing and exerts a large bending moment on the propeller shaft.
  • the natural frequency of whirling of the assembly is primarily influenced by the axial distance between the center of gravity of the propeller and the assessed center of the stern tube bearing and thus it is desirable to minimise this distance both from the whirling and propeller weight point of view.
  • a propeller and shaft assembly for ships in which the propeller shaft has a radial flange, and the propeller boss is a hollow cylinder with an internal flange between the ends thereof attached to the shaft flange, the cylindrical wall of the boss overhanging the shaft flange on the inboard side.
  • the internal flange may be arranged so that a mid chord plane of a root of the propeller blade passes through or near the flange whereby material continuity is obtained of the blade root through the hollow cylinder of the propeller boss and into the internal flange,
  • the forward face of the shaft flange can carry a shaft carrier bush designed to fit within a bearing ring on the stern frame to support the propeller shaft during inspection when the main bearing is removed.
  • the shaft carrier bush can also carry a gland liner for engagement by stationary sealing rings to form the outboard rotary seal.
  • the buoyancy chamber can be fitted to the aft end of the propeller boss to provide a lifting moment acting in opposition to the weight of the propeller.
  • the buoyancy chamber is preferably a closed hollow shell, which may be made of synthetic plastics material reinforced with glass fibre, filled with a body of foam material having preferably a closed cell structure.
  • a propeller shaft 10 is supported at its aft end by a stern bush 11 containing a plain bearing or a ball or roller race hearing.
  • the stern bush 11 is supported at its aft end by a stern frame 12.
  • the shaft 10 has a radial flange 13 at its aft end and an internal flange 14 of a hollow cylindrical propeller boss 15 is attached to the flange 13 by bolts 16 secured by hydraulically-tightened nuts 17.
  • the periphery of the flange 13 is tapered at 18 which assists when fitting the propeller to the shaft.
  • the shaft 10 has an annular projection 19 which extends into the central opening 20 within the flange 14 to further assist location of the propeller boss during mounting.
  • the forward face of the shaft flange 13 carries a shaft carrier bush 21 with a groove 22 in its forward face.
  • the inner wall of the groove 22 fits freely within a bearing ring 23 which is mounted in an extension 12a of the stern frame.
  • a sealing ring 24 fits freely within the outer wall of the groove 22.
  • the ring 24 engages the outer wall of the groove 22 and provides a water-tight seal to replace the outboard rotary seal the static part of which formed by a gland liner 25 is withdrawn forward with the bearing assembly for inspection and maintenance, leaving the rotating part 26 attached to the shaft carrier bush 21.
  • the extension 12a of the stern frame lies within the propeller boss 15 and the wall of the boss extends close to and flush with the outer surface of the stern frame 12. There is thus no necessity for a rope guard, the outboard seal assembly and other parts being protected by the stern frame and the propeller boss.
  • the rotary seal 25, 26 is itself within the length of the propeller boss 15.
  • a diaphragm 27 is fitted in the aft end of the propeller boss 15 to seal the interior of the boss and the end of the shaft 10 against ingress of sea water.
  • a buoyancy chamber consisting of a closed hollow shell 28 made of synthetic resin reinforced with glass fibre and filled with a body 29 of foam plastic with a closed cell structure.
  • the shell 28 has strengthening metal inserts 30 and is attached to the propeller boss 15 by bolts 31.
  • the shell 28 is of generally cylindrical form with a slightly convex tapering surface continuing the outline of the propeller boss.
  • a propeller and shaft assembly for ships comprising a propeller shaft, a radial flange on the propeller shaft, and a propeller comprising a hollow cylindrical boss and a plurality of blades, the boss having an integral flange extending inwardly and attached to the radial flange of the shaft, wherein the blades are integral with the boss, the flange is located within the boss centrally under the roots of the blades, the shaft flange is located within the boss and the boss overhanging the radial flange of the shaft on the inboard side.
  • An assembly as claimed in claim 1 including fixing means securing said flanges together, said fixing means being accessible from the aft end of the propeller whereby the propeller may be removed without disturbing the shaft.
  • An assembly as claimed in claim 1 including a stern frame having a bearing ring, and a shaft carrier bush mounted on the forward face of the shaft flange, said shaft carrier bush being constructed for co-operation with said bearing ring to support the shaft for inspection and maintenance.
  • An assembly as claimed in claim 5 including a gland liner mounted on the shaft carrier bush and stationary sealing rings engaging said gland liner to form an outboard rotary seal for the shaft.
  • An assembly as claimed in claim 1 including a buoyancy chamber attached to the aft end of the propeller boss.
  • buoyancy chamber is a closed hollow shell enclosing a body of rigid foam material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Of Bearings (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Sliding-Contact Bearings (AREA)
  • Sealing Devices (AREA)
  • Fats And Perfumes (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Treatment Of Sludge (AREA)
US617540A 1966-02-22 1967-02-21 Ship's propeller mounting Expired - Lifetime US3405765A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7827/66A GB1182611A (en) 1966-02-22 1966-02-22 Improved Stern Gear for Ships
GB5509366 1966-12-08

Publications (1)

Publication Number Publication Date
US3405765A true US3405765A (en) 1968-10-15

Family

ID=26241697

Family Applications (3)

Application Number Title Priority Date Filing Date
US617540A Expired - Lifetime US3405765A (en) 1966-02-22 1967-02-21 Ship's propeller mounting
US617687A Expired - Lifetime US3448715A (en) 1966-02-22 1967-02-21 Marine propeller having a buoyant chamber
US617689A Expired - Lifetime US3467050A (en) 1966-02-22 1967-02-21 Stern gear for ships

Family Applications After (2)

Application Number Title Priority Date Filing Date
US617687A Expired - Lifetime US3448715A (en) 1966-02-22 1967-02-21 Marine propeller having a buoyant chamber
US617689A Expired - Lifetime US3467050A (en) 1966-02-22 1967-02-21 Stern gear for ships

Country Status (10)

Country Link
US (3) US3405765A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE772234Q (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1295411B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (2) DK118995B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1512180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB1182611A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (3) NL6702658A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (2) NO124917B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (2) SE306256B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU477572A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594096A (en) * 1967-09-26 1971-07-20 Eywin Scharffenberg Kahlke Kar Combined carrying and driving device for watercrafts
US4021143A (en) * 1975-06-17 1977-05-03 Stone Manganese Marine Limited Marine propeller arrangement
US4789303A (en) * 1987-12-22 1988-12-06 Brunswick Corporation Marine propeller carry handle and emergency spare kit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838654A (en) * 1971-12-30 1974-10-01 Bruker Physik Ag Submarine craft
US4534569A (en) * 1983-09-27 1985-08-13 Mitsubishi Jukogyo Kabushiki Kaisha Stern tube seal device providing a seal about a rotatable shaft
FR2673908A1 (fr) * 1991-03-13 1992-09-18 Delmotte Didier Dispositif de maintien et de controle de l'etancheite et de la lubrification des lignes d'arbres de transmission des moteurs de bateaux.
DE102011055042A1 (de) 2011-11-04 2013-05-08 Jastram Gmbh & Co. Kg Wickelschutz für einen Ruderpropeller
US12065226B1 (en) * 2023-05-05 2024-08-20 Rolls-Royce Marine North America Inc. Fixed-pitch bolted propeller

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US794932A (en) * 1904-09-01 1905-07-18 John D Fullerton Propeller.
US2028448A (en) * 1935-04-03 1936-01-21 Leroy F Harza Hydraulic turbine
DE679926C (de) * 1935-12-21 1939-08-17 Gustav Koehler Dipl Ing Befestigung von radial beaufschlagten Doppelschaufeln
US2514097A (en) * 1947-01-14 1950-07-04 Morgan Smith S Co Hub construction for variable pitch propellers or the like
US2581834A (en) * 1946-03-22 1952-01-08 United Aircraft Corp Impeller mounting
FR997656A (fr) * 1949-10-17 1952-01-09 Roue à pales, notamment pour ventilateur
US2933141A (en) * 1954-11-13 1960-04-19 Konink Mij De Schelde Nv Marine adjustable-blade propeller and sealing means therefor
US2987123A (en) * 1950-11-16 1961-06-06 Liaaen Nils Johannes Arrangement in propellers with variable pitch blades
US3228482A (en) * 1963-02-18 1966-01-11 P & O Res & Dev Co Propeller hub and shaft connection

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE334386C (de) * 1919-08-09 1921-03-14 Hans Reissner Dr Ing Befestigung fuer Schiffsschrauben und aehnliche Maschinenteile
US1834003A (en) * 1929-03-01 1931-12-01 Oertz Anna Emilia Hollow rudder for ships
US2283291A (en) * 1937-10-02 1942-05-19 Goetaverken Ab Afterbody of vessels
US2470517A (en) * 1944-04-27 1949-05-17 Escher Wyss Machinenfabriken A Variable-pitch propeller
FR1022792A (fr) * 1950-08-03 1953-03-10 Chantier Et Ateliers De Saint Disposition d'une surface profilée en ogive sur des parties fixes ou mobiles situées derrière une hélice de navire
GB806386A (en) * 1956-02-17 1958-12-23 Marius Cornelis Pieterse Method for securing an oil-bath stern tube in a ship, and stern tube and adjacent parts for the application of this method
DE1768147U (de) * 1958-03-31 1958-06-04 Eisenwerke Muelheim Meiderich Propellerbefestigung.
US3132417A (en) * 1961-10-18 1964-05-12 Dayton Formold Inc Production of plastic foam articles
GB1009254A (en) * 1963-06-28 1965-11-10 Otto Fritz Hefft Thrust block

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US794932A (en) * 1904-09-01 1905-07-18 John D Fullerton Propeller.
US2028448A (en) * 1935-04-03 1936-01-21 Leroy F Harza Hydraulic turbine
DE679926C (de) * 1935-12-21 1939-08-17 Gustav Koehler Dipl Ing Befestigung von radial beaufschlagten Doppelschaufeln
US2581834A (en) * 1946-03-22 1952-01-08 United Aircraft Corp Impeller mounting
US2514097A (en) * 1947-01-14 1950-07-04 Morgan Smith S Co Hub construction for variable pitch propellers or the like
FR997656A (fr) * 1949-10-17 1952-01-09 Roue à pales, notamment pour ventilateur
US2987123A (en) * 1950-11-16 1961-06-06 Liaaen Nils Johannes Arrangement in propellers with variable pitch blades
US2933141A (en) * 1954-11-13 1960-04-19 Konink Mij De Schelde Nv Marine adjustable-blade propeller and sealing means therefor
US3228482A (en) * 1963-02-18 1966-01-11 P & O Res & Dev Co Propeller hub and shaft connection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594096A (en) * 1967-09-26 1971-07-20 Eywin Scharffenberg Kahlke Kar Combined carrying and driving device for watercrafts
US4021143A (en) * 1975-06-17 1977-05-03 Stone Manganese Marine Limited Marine propeller arrangement
US4789303A (en) * 1987-12-22 1988-12-06 Brunswick Corporation Marine propeller carry handle and emergency spare kit

Also Published As

Publication number Publication date
SE344571B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-04-24
DK125881B (da) 1973-05-21
GB1182611A (en) 1970-02-25
US3448715A (en) 1969-06-10
NO124917B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-06-26
NO123415B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-11-08
SU477572A3 (ru) 1975-07-15
GB1186858A (en) 1970-04-08
NL6702657A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-08-23
SE306256B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1968-11-18
FR1512180A (fr) 1968-02-02
US3467050A (en) 1969-09-16
BE772234Q (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-01-17
DK118995B (da) 1970-10-26
NL6702659A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-08-23
NL6702658A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-08-23
DE1295411B (de) 1969-05-14

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