WO2014175746A1 - Ensemble d'arbre de torsion creux - Google Patents

Ensemble d'arbre de torsion creux Download PDF

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Publication number
WO2014175746A1
WO2014175746A1 PCT/NO2014/050057 NO2014050057W WO2014175746A1 WO 2014175746 A1 WO2014175746 A1 WO 2014175746A1 NO 2014050057 W NO2014050057 W NO 2014050057W WO 2014175746 A1 WO2014175746 A1 WO 2014175746A1
Authority
WO
WIPO (PCT)
Prior art keywords
quill shaft
shaft
quill
propeller
propeller shaft
Prior art date
Application number
PCT/NO2014/050057
Other languages
English (en)
Inventor
Norvald Harald RØYSET
Original Assignee
Rolls-Royce Marine As
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 Rolls-Royce Marine As filed Critical Rolls-Royce Marine As
Publication of WO2014175746A1 publication Critical patent/WO2014175746A1/fr

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Classifications

    • 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
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • B63H2023/346—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts comprising hollow shaft members

Definitions

  • the invention relates to a quill shaft assembly for a thruster, and a propulsion system for a vessel, boat or ship.
  • Propellers and in particular propellers in propulsion thrusters may be subjected to large transient loads.
  • large transient loads occur when a vessel or a ship is at sea.
  • Such situations include ventilation of the propeller(s) and/or situations where the entire propeller leaves the water.
  • the propeller is unloaded, considerable torsional vibration(s) or oscillation(s) can occur in the entire drive line.
  • the propeller / thruster reenter the water will a high peak moment or torque normally occur. This torque can be much higher than the design load of the gears / sprockets in the transmission driving the propeller. This can result in pitting, tearing damage(s) and tooth fracture(s) or break-off(s).
  • Simulations comparing thrusters with and without quill shafts have shown that a reduction of about 60% to about 75% in pulse loads from the propeller can be achieved.
  • Another object of the invention is to provide an improved quill shaft thruster and an improved propulsion system, wherein pitting, tearing damage(s) and tooth fracture(s) or break-off(s) in the transmission components not likely will to occur.
  • Yet another object of the invention is to provide an alternative quill shaft thruster and a propulsion system.
  • the present invention concerns a quill shaft assembly for providing an elastic connection between a propeller and a transmission on a vessel.
  • the assembly includes a propeller shaft with a propeller shaft bore, a propeller shaft outboard end, a propeller shaft inboard end and a splined portion in the propeller shaft bore at the propeller shaft outboard end.
  • a quill shaft includes a splined quill shaft outboard end and a quill shaft inboard end.
  • the quill shaft is arranged within the propeller shaft.
  • the outboard end of the propeller shaft bore is provided with an inner annular flange adjacent the splined portion.
  • the splined portion is located on the inboard side of the inner annular flange.
  • the splined quill shaft outboard end is in mating relationship with the splined portion of the propeller shaft bore for providing transfer of torque between the propeller shaft and the quill shaft at the outboard end of the shafts.
  • the quill shaft inboard end is adapted to be driven by the transmission of the vessel.
  • a compliant portion on the quill shaft between the splined portion of the quill shaft and the inboard end of the quill shaft is adapted to be driven by the transmission of the vessel.
  • the compliant portion is allowed to be dislocated in a tangential direction in relation to the bore of the propeller shaft.
  • a sleeve supports the inboard end of the propeller shaft.
  • a connecting disk is attached to the quill shaft outboard end, whereby the inner annular flange extends into an annular recess formed between the connecting disk and a shoulder on the outboard end of the quill shaft, preventing axial displacement of the quill shaft in relation to the propeller shaft.
  • the inner annular flange may form a part of a quill shaft attachment sleeve partially mounted within and fixed to the propeller shaft.
  • the connecting disk may be located in a cylindrical bore of the quill shaft attachment sleeve.
  • Contact faces between the annular recess and the inner annular flange extending into the annular recess, may be formed with thrust pads defining load bearing contact areas.
  • the thrust pad or pads may be formed as a bead shaped as a portion of a torus.
  • the bead may be interrupted by radial recesses along the load bearing contact areas.
  • One torus shaped bead interrupted by radial recesses may be formed on the inboard face of the annular flange and one torus shaped bead interrupted by radial recesses may be formed on the connecting disk.
  • the connecting disk may include axial channels for lubricating liquid and a gap may be formed between the annular recess and the inner annular flange extending into the annular recess, the splined portion of the propeller shaft and the splined portion of the quill shaft, and the quill shaft and the propeller shaft allowing circulation of a lubricating liquid.
  • An external flange may be arranged on an outer surface of the quill shaft attachment sleeve for securing the quill shaft attachment sleeve to the propeller shaft.
  • a bearing may be provided between the sleeve supporting the inboard end of the propeller shaft and the propeller shaft, and a flange at the inboard end of the quill shaft, may be secured to the sleeve.
  • a toothed gear or gear wheel arrangement may be provided on the sleeve for transferring of rotational force from a transmission in the vessel to the propeller shaft.
  • At least one thrust bearing arrangement may be provided for supporting the sleeve in a housing, and for simultaneously supporting the propeller shaft and the toothed gear or gear wheel arrangement in this housing.
  • a safety ring with an outer diameter greater than an inner diameter of a bore in the sleeve may be secured to the inboard end of the propeller shaft for pre- venting extraction of the propeller shaft from the sleeve in the event of a fracture of the quill shaft.
  • the gear arrangement may include a bevel gear.
  • the invention furthermore relates to a quill shaft attachment sleeve for a quill shaft assembly as defined above.
  • the attachment sleeve includes an inboard end with an inner annular flange and a flange opening, a first tubular portion with a first diameter, a second tubular portion with a second diameter and an outer flange with a ring of boreholes for attachment bolts.
  • the inner annular flange is formed with thrust pads defining load bearing contact areas at least on a face facing towards an inboard end, on an outside surface thereof.
  • the thrust pads may be formed as a bead shaped portion of a torus interrupted by radial recesses along the annular load bearing areas.
  • Fig. 1 shows a quill shaft assembly according to the present invention
  • Fig. 2 is a cross-sectional view of the propeller or outboard end or side of the shafts in the quill shaft assembly;
  • Fig. 3 is a perspective view of the propeller or outboard end or side of the shafts in quill shaft assembly
  • Fig. 4 is a cross-sectional view in detail, of a portion of the quill shaft assembly shown in the figs. 1 -3;
  • Fig. 5 is a perspective view of a connecting disk for use in the quill shaft assembly of the above figures.
  • Figure 1 illustrates a thruster or a quill shaft assembly 1 for a vessel such as a boat or a ship, where a quill shaft 2 is arranged within a propeller shaft 3 for providing an elastic connection between a propeller and a transmission on a vessel.
  • the quill shaft 2 includes a splined quill shaft outboard end and a quill shaft inboard end with a quill shaft flange 9.
  • the quill shaft inboard end is thereby adapted to be driven by the transmission of the vessel.
  • a compliant, resilient or elastic portion of the quill shaft 2 is located between the splined quill shaft portion and the quill shaft flange 9.
  • the propeller shaft 3 includes a longitudinal propeller shaft bore, a propeller shaft outboard end and a propeller shaft inboard end.
  • the outboard end of the propeller shaft bore is provided with an inner annular flange 42 adjacent to a splined portion.
  • the splined portion inside the bore of the propeller shaft 3 is located adjacent on the inboard side of the inner annular flange of the bore.
  • the quill shaft 2 is arranged in the bore of the propeller shaft 3.
  • the splined quill shaft outboard end meshes with the splined portion of the propeller shaft bore for providing transfer of torque between the propeller shaft 3 and the quill shaft 2 at the outboard end of the shafts.
  • the compliant portion is allowed to be dislocated in a tangential direction in relation to the bore of the propeller shaft.
  • a sleeve 6 shown as a gear wheel carrier with a gear wheel 7 supports the propeller shaft 3 and the gear wheel 7 to simultaneously provide support for the gear wheel 7 and axial support for the propeller shaft 3 through two anti friction bearings 10.
  • the two anti friction bearings 10, shown as roller bearings, thereby form both axial and radial support for the propeller shaft/quill shaft combination and for the sleeve 6 forming the gear wheel carrier with a gear wheel 7.
  • a flanged bearing housing 1 1 for attachment to fore instance a thruster housing on the vessel surrounds and supports the sleeve 6.
  • a connecting disk 5 shaped as a circular disk with bolt holes is bolted to the outboard end of the quill shaft 2.
  • the inner annular flange 42 extends into an annular recess formed between the connecting disk 5 and the outboard end of the quill shaft 2, preventing axial displacement of the quill shaft 2 in relation to the propeller shaft 3.
  • the quill shaft attachment sleeve 4 includes an external flange 43 arranged on an outer or outside surface 44 of the quill shaft attachment sleeve 4 to secure the quill shaft attachment sleeve 4 to the propeller shaft 3 with bolts.
  • the inner annular flange 42 of the quill shaft attachment sleeve 4 includes a pad arrangement for providing contact faces exposed to axial forces imposed by the propeller (not shown) both in a forward and an astern direction.
  • the quill shaft attachment sleeve 4 is partially mounted within the propeller shaft 3 and includes the internal flange 42 at the inboard end or side.
  • the internal flange 42 of the quill shaft attachment sleeve 4 rests against a shoulder on the quill shaft 2 or a connecting pad disk 5 bolted to an outboard end of the quill shaft 2.
  • the outer end or side of the quill shaft attachment sleeve 4 and a part of the outer surface 44 of the quill shaft attachment sleeve 4 are situated or arranged outside of the propeller shaft 3.
  • a propeller shaft flange 31 with bolt holes 32 is provided for attachment of the propeller. Axial forces will be transferred from the propeller shaft flange 31 to the quill shaft 2 via the internal flange 42 of the quill shaft attachment sleeve 4.
  • the internal flange 42 transfers the axial load directly onto the recessed end or shoulder on the quill shaft when the propeller is propelling in a forward direction (to the right on the drawings) or to the quill shaft 2 via the connecting pad disk 5 when the propeller is propelling in direction astern (to the left on the drawings).
  • fig. 1 shows a gear wheel carrier or sleeve 6 arranged onto the inboard end of the propeller shaft 3.
  • the sleeve 6 carries the toothed gear for transferring rotational force from a motor (not shown) in the vessel to the propeller (not shown).
  • the gear wheel on the carrier or sleeve 6 is schematically shown as gear arrangement 7.
  • the gear arrangement 7 is a bevel gear.
  • a plain bearing 8 is located at the inboard end of the propeller shaft 3 to allow a slight rotation between the propeller shaft 3 and the sleeve 6 to allow torsion flexing of the quill shaft 2 and to prevent torsion loads on the propeller shaft 3 inboard of the splined portion.
  • the quill shaft flange 9 located on the inboard end of the quill shaft 2 is bolted onto the sleeve 6 for transferring torque between the sleeve 6 driven by the gear arrangement 7, and the quill shaft 2.
  • a safety ring 53 is bolted onto the inboard end of the propeller shaft 3 to prevent the propeller shaft (and the propeller) from being pulled out of the sleeve 6 in the event of a quill shaft fracture.
  • the safety ring will abut a beveled edge on the sleeve 6 in the event of such a fracture.
  • a propeller shaft bearing 10' supports the propeller shaft 3 and is located on the propeller shaft 3 between the inboard and outboard end of the propeller shaft 3.
  • a fixed part of the propeller shaft bearing 10' will typically be carried by a portion of a thruster housing.
  • the propeller shaft bearing 10' will reduce the bending moment on the propeller shaft 3 and on the two anti friction bearings 10 supporting the sleeve 6.
  • Fig. 2 shows a detail in cross section of the outboard end of the quill shaft assembly shown in fig. 1 .
  • the quill shaft attachment sleeve 4 is partially mounted within an outer bore of the propeller shaft 3 and includes the internal flange 42 at the inward end or side facing the quill shaft 2.
  • the quill shaft attachment sleeve 4 includes an actuator installation portion 41 for the installation of a propeller pitch actuator (not shown) on the inner surface 45.
  • Fig. 2 also shows bolt holes in the external flange 43 on the outside surface 44 of the quill shaft attachment sleeve 4 and in an outer face of the propeller shaft 3 for securing the quill shaft attachment sleeve 4 to the propeller shaft 3.
  • Fig. 1 shows a detail in cross section of the outboard end of the quill shaft assembly shown in fig. 1 .
  • the quill shaft attachment sleeve 4 is partially mounted within an outer bore of the propeller shaft 3 and includes the internal flange 42 at the inward end or
  • the quill shaft 2 furthermore shows the connecting pad disk 5 bolted to the quill shaft 2, the spline arrangement 21 in the quill shaft 2 and the propeller shaft 3, and the bolt holes 32 in the attachment flange 31 for attaching the propeller.
  • the quill shaft 2 is hollow to provide room for channels for hyd- raulic lines to the propeller pitch actuator and for providing a flow of fluid past the connecting pad disk 5, the spline arrangement 21 and an annulus between the quill shaft 2 and the propeller shaft 3 to provide lubrication and to entrain any particles resulting from wear between the parts to improve the lifespan of the assembly.
  • the quill shaft attachment sleeve 4 includes an inboard end with the inner annular flange 42 and a flange opening at the end of a first tubular portion 55 with a first diameter.
  • the quill shaft attachment sleeve 4, furthermore includes a second tubular portion 56 with a second diameter greater than the diameter of the inboard first tubular portion 55.
  • the second tubular portion 56 forms the actuator installation portion 41 .
  • Fig. 3 is a perspective view of a detail of the quill shaft attachment sleeve 4, where the various portions of the sleeve are shown. Regarding the various reference numerals, it is referred to the description of fig. 2. Fig. 3 however also shows a circular pad arrangement comprising a torus shaped thrust pad 41 1 on the inter- nal flange 42. The torus shaped thrust pad 41 1 is machined on at least the outside of the internal flange 42 to provide contact areas between the internal flange 42 and the recessed portion of the quill shaft. The thrust pad 42 provides a predictable contact area and thus predictable stresses in the internal flange 42 and predictable contact stress between the internal flange 42 and the recessed portion of the quill shaft.
  • Radial recesses 412 are machined into the torus shaped thrust pad 41 1 forming a number of thrust pads to allow fluid and contaminations to flow past the torus shaped thrust pad/pads 41 1 .
  • the torus shaped thrust pad 41 1 is shaped as a portion of a torus, disrupted by the radial recesses to form individual trust pads 41 1 . These pads are exposed to pressure when the propeller is driven in a forward direction. The curvature of the torus shaped thrust pad 41 1 will affect the contact area and thus the magnitude of the contact stress.
  • these thrust pads could be shaped as a plurality of spherical pads. Such pads may however be more difficult to manufacture due to machining issues.
  • the other side of the internal flange 42 on the inside of the quill shaft attachment sleeve 4 may be flat to ease machining.
  • Fig. 3 shows the inboard end to the left of the figure with the inner annular flange 42 and a flange opening at the end of a first tubular portion 55 with a first diameter.
  • the second tubular portion 56 with a second diameter greater than the diameter of the inboard first tubular portion 55 is also shown.
  • Fig. 4 shows a detail in cross section of the propeller shaft 3, the quill shaft 2, the quill shaft attachment sleeve 4, the internal flange 42 of the quill shaft attachment sleeve 4 and the connecting disk 5.
  • An annular recess 46 for an O-ring is located around the perimeter of the connecting disk 5 to form a seal between the connecting disk 5 and the quill shaft attachment sleeve 4.
  • Bolt holes 59 are located in the quill shaft 2 and the connecting disk 5 for attachment of the connecting disk 5 to the quill shaft 2 with bolts.
  • the connecting disk 5 includes a torus shaped thrust pad similar in design and function as the thrust pad/pads 41 1 on the internal flange 42 of the quill shaft attachment sleeve 4.
  • the recessed part 47 of the quill shaft 2 forms a cylindrical portion 48 with an outer diameter somewhat smaller than an inner diameter of the internal flange 42 for providing an annular gap to allow for a certain radial motion of the quill shaft in relation to the internal flange 42 and thus the propeller shaft 3, and to allow hydraulic/lubricating fluid to flow past the transition between the internal flange 42 and the cylindrical portion 48.
  • the cylindrical portion 48 has a length somewhat greater than the thickness of the internal flange 42 to prevent the internal flange 42 from being clamped between the connecting disk 5 and a shoulder 49 on the quill shaft.
  • An annular recess 52 for the internal flange 42 is formed between the connecting disk 5 and the shoulder 49 on the quill shaft 2.
  • Fig 5 is a perspective view of the connecting disk 5 showing the recess 46 for an O-ring and the bolt holes 59 for the attachment bolts for attaching the connecting disk 5 to the quill shaft.
  • Channels 50 for allowing circulation of lubricating liquid extend through the connecting disk 5.
  • Torus shaped thrust pad 51 similar in design and function as the thrust pad 41 1 (fig. 4) on the internal flange of the quill shaft attachment sleeve, is located on the connecting disk 5 on the side of the connecting disk 5 facing the internal flange 42. Similarly, this thrust pad 51 provides a contact area between the internal flange of the quill shaft attachment sleeve and the connecting disk.
  • the thrust pad 51 provides a predictable contact area and thus predictable stresses in the internal flange and predictable contact stress between the internal flange and the connecting disk 5. Radial recesses may be machined into the torus shaped thrust pad 51 to allow fluid and contaminations to flow past the torus shaped thrust pad 51 (similar to what is shown as 412 in fig. 3). This pad is exposed to pressure when the propeller is driven for providing thrust in reversed direction.
  • these thrust pads 51 could be shaped as a plurality of spherical portions, though such spherical portions may be more difficult to manufacture due to machining issues.
  • the need for radial recesses in the connecting disk 5 is somewhat less compared to the need for recesses 412 in the thrust pad 41 1 on the outside of the internal flange 42 of the quill shaft attachment sleeve, as such radial recesses not are needed for circulation of lubricating liquid.
  • the lubricating liquid will typically be pumped through the center of the quill shaft, into the inside of the quill shaft attachment sleeve 4, through the channels 50 in the connecting disk 5, through a gap between the connecting disk 5 and the internal flange 42, through an annular gap between the opening of the internal flange 42 and the cylindrical portion of the quill shaft, past the recesses in the thrust pad (41 1 on fig 3) on the outside of the internal flange 22, past the splines, and into the annulus between the quill shaft 2 and the propeller shaft 3.
  • splined portion In the context of the present invention, are “splined portion", “splines” etc. intended to explain a mechanism that transfers torque between components, whereof splines are the most common in applications of the type in the present invention.
  • splines In the context of the present invention, are “splined portion", “splines” etc. intended to explain a mechanism that transfers torque between components, whereof splines are the most common in applications of the type in the present invention.
  • splines in the claims is intended to cover such solutions unless otherwise specified.
  • the invention also relates to a propulsion system for a vessel, boat or ship comprising said quill shaft assembly 1 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

La présente invention porte sur un propulseur et sur un système de propulseur pour un navire, comprenant un arbre de torsion creux disposé à l'intérieur d'un arbre d'hélice. L'ensemble comprend un arbre d'hélice avec un alésage d'arbre d'hélice, et une portion cannelée dans l'alésage de l'arbre d'hélice. L'arbre de torsion creux comprend une extrémité cannelée. L'arbre de torsion creux est disposé à l'intérieur de l'arbre d'hélice. Un disque de raccordement est fixé à l'extrémité hors-bord de l'arbre de torsion creux pour maintenir l'arbre de torsion creux dans une direction axiale. En outre, l'invention concerne un manchon de fixation de l'arbre.
PCT/NO2014/050057 2013-04-23 2014-04-15 Ensemble d'arbre de torsion creux WO2014175746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20130564A NO336639B1 (no) 2013-04-23 2013-04-23 Sammenstilling med hul aksel
NO20130564 2013-04-23

Publications (1)

Publication Number Publication Date
WO2014175746A1 true WO2014175746A1 (fr) 2014-10-30

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Application Number Title Priority Date Filing Date
PCT/NO2014/050057 WO2014175746A1 (fr) 2013-04-23 2014-04-15 Ensemble d'arbre de torsion creux

Country Status (2)

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NO (1) NO336639B1 (fr)
WO (1) WO2014175746A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097731A1 (fr) 2016-11-28 2018-05-31 D.J. De Blaeij Holding B.V. Conception de propulseur comprenant un arbre d'hélice d'insertion dans un arbre de transmission creux

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470200A (en) * 1975-10-27 1977-04-14 Brown Gear Ind Marine propulsion means
US4064979A (en) * 1975-12-11 1977-12-27 Dynetics, Inc. Synchronizing clutch
US4689027A (en) * 1985-01-31 1987-08-25 Sanshin Kogyo Kabushiki Kaisha Transmission mechanism for a marine outboard drive
GB2243130A (en) * 1990-04-16 1991-10-23 Outboard Marine Corp Marine propulsion device
US20100317245A1 (en) * 2008-01-03 2010-12-16 Powertrain Europe As Drive joints and use of said drive joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470200A (en) * 1975-10-27 1977-04-14 Brown Gear Ind Marine propulsion means
US4064979A (en) * 1975-12-11 1977-12-27 Dynetics, Inc. Synchronizing clutch
US4689027A (en) * 1985-01-31 1987-08-25 Sanshin Kogyo Kabushiki Kaisha Transmission mechanism for a marine outboard drive
GB2243130A (en) * 1990-04-16 1991-10-23 Outboard Marine Corp Marine propulsion device
US20100317245A1 (en) * 2008-01-03 2010-12-16 Powertrain Europe As Drive joints and use of said drive joint

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097731A1 (fr) 2016-11-28 2018-05-31 D.J. De Blaeij Holding B.V. Conception de propulseur comprenant un arbre d'hélice d'insertion dans un arbre de transmission creux

Also Published As

Publication number Publication date
NO336639B1 (no) 2015-10-12
NO20130564A1 (no) 2014-10-24

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