EP0258706B1 - Verfahren und Vorrichtung zur Verhinderung des Ansetzens von Fremdkörpern an Verstellpropeller-Gestängen von Wasserfahrzeugen - Google Patents

Verfahren und Vorrichtung zur Verhinderung des Ansetzens von Fremdkörpern an Verstellpropeller-Gestängen von Wasserfahrzeugen Download PDF

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Publication number
EP0258706B1
EP0258706B1 EP87111745A EP87111745A EP0258706B1 EP 0258706 B1 EP0258706 B1 EP 0258706B1 EP 87111745 A EP87111745 A EP 87111745A EP 87111745 A EP87111745 A EP 87111745A EP 0258706 B1 EP0258706 B1 EP 0258706B1
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EP
European Patent Office
Prior art keywords
propeller
thrust
rods
linkage
piston
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
EP87111745A
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German (de)
English (en)
French (fr)
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EP0258706A1 (de
Inventor
Peter Müller
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/02—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary
    • B63H3/04—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary the control element being reciprocatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control

Definitions

  • the invention relates to a method for preventing the attachment of foreign bodies to parts of a push rod linkage for the adjustment of the blades of an adjustable propeller, which is provided for driving a watercraft driven by a motor, the push rods of the push rod linkage via one of the rotating and the displaceable, not rotating part of the push rod linkage connecting rotary-sliding coupling are adjustable by means of an adjusting linkage, and a device for performing this method.
  • Variable pitch propellers for watercraft are known in various designs.
  • adjustable propellers for large watercraft i.e. in the case of high-performance ship drives
  • the adjustment rods of the individual propeller blades are accommodated in the hub of the adjustable propeller.
  • the adjusting rods are actuated here by a push rod which is arranged in the center of a hollow drive shaft and carries at its end an adjusting flange on which the adjusting rods are supported.
  • the push rod is actuated here by a hydraulic linear motor consisting of cylinder and piston, which is either installed in the drive shaft or via an adjusting linkage the push rod is connected, see U.S. Patent 3,095,932.
  • variable-pitch propellers are also used, but in this case the propeller blades are adjusted via a mechanical lever linkage by means of a hydraulic linear motor, see US Pat. No. 4,599,043 by the same inventor or by means of a manual actuation, see US Pat. No. 2,742 097.
  • variable pitch propellers for watercraft is the phenomenon that foreign bodies, in particular small shells, are deposited on the moving parts of the variable linkage, which can hinder or even block the adjusting movements of the propeller. This applies especially to the push rods of the push rod linkage for the adjustment of the propeller blades, of which parts occasionally come into contact with the water depending on the adjustment position of the propeller blades, see e.g. the aforementioned US Pat. No. 4,599,043. In FIG.
  • This object is achieved according to the invention in that the push rods are moved into a protective position immediately after the engine is switched off, in which the push rods are no longer exposed to foreign bodies, while when the engine is started the push rods are in a neutral position of the propeller blades corresponding position can be moved.
  • This ensures that the desired protective effect is achieved without special protective measures by supplying the parts of the adjustment linkage in the hub or in the bearing housing that are in the water when the watercraft is not in operation, without a special seal having to be provided for this, but rather through prevention access to these parts is prevented.
  • the taking of the protective position when the watercraft is not in operation and the neutral position when the watercraft engine starts can be set manually or automatically.
  • the invention also includes a device with which the method can be carried out optimally.
  • This object is achieved according to the invention in that a bearing housing connected to the hub for rotatably receiving the blade root is provided on the hub of the adjustable propeller for each propeller blade, in which a push rod is slidably mounted with an adjusting pin engaging in the blade root, in which an end position of the push rod stroke, the free end connected to the rotary / sliding coupling of the push rods is completely immersed in the bearing housing and sealed to the outside. It is thereby achieved that the foreign body and mussel infestation on parts in the water can only be prevented by the design of the bearing housing.
  • 1 denotes an adjustable propeller, which has adjustable propeller blades 2 and a propeller hub 4 driven by a drive shaft 3.
  • the drive shaft 3 is driven by a drive machine 5 and is mounted in a bearing 6 located near the propeller 1.
  • the pitch of the propeller blades 2 is adjusted by a lever linkage 7, the main part of which is a two-armed adjusting lever 8, the pivot axis 9 of which is pivotally supported in a support bearing 10.
  • the support bearing 10 is mounted either on the hull of the watercraft or, if the variable-pitch propeller 1 is arranged on the rudder, on a part of this rudder.
  • the adjusting lever 8 has an upper and a lower arm 11, 12, the upper arm 11 being coupled via a joint 13 to the bumper 14 of a linear motor 15 driven by a power source 29, while the lower arm 12 is coupled via joints 22, 23 a rotary slide clutch 21 is connected.
  • the rotary / sliding coupling 21 has a non-rotating steep 17, which is connected to the lower arm 12 via the joints 22, 23, while the rotating coupling part 19 is fastened to the drive shaft 3 and via radial and axial bearings (only one Bearing 18 shown schematically) carries the non-rotating coupling part 17.
  • Push rods 20 are supported on the flange 24 of the rotating coupling part 19, which are guided in the propeller hub 4 and adjust the individual propeller blades 2 at the same time.
  • the propeller hub 4 and the rotary / sliding coupling 21 are surrounded by a hood 25.
  • FIG. 2 and 3 show that part of the drive according to FIG. 1 in which the solution according to the invention is implemented.
  • the same reference symbols as in FIG. 1 mean the same parts.
  • the propeller hub 4 is formed in several parts by the propeller blade 2 being mounted together with the push rod 20 in a bearing housing 26 which is fixedly connected to the propeller hub 4. But it is also possible to design the propeller hub 4 and the bearing housing 26 as a single piece. As can be seen from Fig. 4, three bearing housings .26 are arranged corresponding to three propeller blades 2.
  • the push rods 20 have an adjusting pin 27 which projects into an adjusting disk 28 with an adjusting groove.
  • the adjusting disk 28 is connected to the blade root 30 of the propeller blade 2 and forms the holder for the propeller blade 2.
  • Each push rod 20 has a piston 31, 32 with a seal 33 at its ends.
  • the pistons 31, 32 are guided in cylinder bores 34, 35 which open into an interior 36 of the bearing housing 26.
  • the interior 36 forms, together with the two cylinder bores 34, 35, a space which is closed by the pistons 31, 32 and has a constant volume which is expediently combined with a lubricant, e.g. Grease is filled and can therefore not be influenced by external influences.
  • a lubricant e.g. Grease
  • a connecting rod 37 extends from the piston 31, the free end of which is fixedly connected by means of a screw 41 to the flange 24 of the rotating part 19 of the rotary slide clutch 21, which flange is expediently triangular.
  • the rotating part is covered by the hood-shaped, displaceable, non-rotating part 17 of the rotary-sliding coupling 21, radial and axial bearings (not visible) being arranged between the two parts 17, 19, via which the adjusting forces of the adjusting linkage 7 on the Push rod linkage are transmitted.
  • the cylinder bores 34 are covered by a screw cap 42, in the center of which a bore 43 with a seal 44 is provided for the passage of the connecting rod 37.
  • the adjustment linkage 7 is connected via a yoke 46, see FIG. 4, and a bracket 45 via a joint 22.
  • the bracket 45 has the tabs 16, which are connected via links 23 to webs 47 of the displaceable, non-rotating part of the rotary / sliding coupling.
  • Through the passage 53 formed by the bracket 45 and the yoke 46 it is also possible to arrange the rotary / sliding coupling with the adjusting linkage 7 not only on the outlet side as in FIGS. 2 and 3, but also on the inlet side of the adjustable propeller 1.
  • the propeller blade 2 is connected to the blade root or the adjusting disk 28, see FIGS. 2 and 3, by means of screws 50.
  • a screw plug 51 gives access to a filler screw 52, the removal of which makes the closed interior 36 accessible.
  • the cylinder bore 34 with the cap 42 makes it possible to provide protection for the connecting rod 37 without additional means being required.
  • the invention is based on the consideration that the foreign body infestation can cause malfunctions if it forms on the connecting rod 37.
  • the mussels that sit there are very hard and can hardly be removed.
  • the connecting rod 37 is kept in a dark room, in the present case in the cylinder bore 34, no foreign body infection occurs.
  • the same also applies essentially to the cylinder bore 35 when the push rod is in the position shown in FIG. 3. If the push rods 20 are brought into the position shown in FIG. 2 when the watercraft is at a standstill, on the one hand the cylinder bore 34 is closed by the seal 44 and the connecting rod 37, while the cylinder bore 35 is completed by the piston 32. If this position of the push rods 20 is assumed each time the watercraft comes to a standstill, foreign matter on the connecting rod 37 is reliably avoided, as is in the cylinder bore 35.
  • this protective position is reliably taken, it can be effected automatically.
  • the adjustment linkage 7 is actuated by a hydraulic linear motor which is designed as a differential piston, in which a spring is installed in the cylinder space with the smaller area, which, when there is no pressure, presses the piston into the position corresponding to the position shown in FIG.
  • the medium pressure pushes the piston into a specific neutral position for idling.
  • the automatic maintenance of the protective position and the neutral position of the push rods can also be done in another way, e.g. through relays that interact with limit switches and stop the linear motor in the desired positions.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
  • Hydraulic Turbines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Motor Power Transmission Devices (AREA)
EP87111745A 1986-08-22 1987-08-13 Verfahren und Vorrichtung zur Verhinderung des Ansetzens von Fremdkörpern an Verstellpropeller-Gestängen von Wasserfahrzeugen Expired - Lifetime EP0258706B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3374/86 1986-08-22
CH3374/86A CH670609A5 (enrdf_load_stackoverflow) 1986-08-22 1986-08-22

Publications (2)

Publication Number Publication Date
EP0258706A1 EP0258706A1 (de) 1988-03-09
EP0258706B1 true EP0258706B1 (de) 1990-05-02

Family

ID=4254575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111745A Expired - Lifetime EP0258706B1 (de) 1986-08-22 1987-08-13 Verfahren und Vorrichtung zur Verhinderung des Ansetzens von Fremdkörpern an Verstellpropeller-Gestängen von Wasserfahrzeugen

Country Status (9)

Country Link
US (1) US4880402A (enrdf_load_stackoverflow)
EP (1) EP0258706B1 (enrdf_load_stackoverflow)
JP (1) JPH01119497A (enrdf_load_stackoverflow)
CA (1) CA1299031C (enrdf_load_stackoverflow)
CH (1) CH670609A5 (enrdf_load_stackoverflow)
DE (1) DE3762500D1 (enrdf_load_stackoverflow)
DK (1) DK160472C (enrdf_load_stackoverflow)
ES (1) ES2015018B3 (enrdf_load_stackoverflow)
NO (1) NO165907C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031932A1 (de) * 1990-10-09 1992-04-16 Peter Mueller Verstellpropeller

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5967753A (en) * 1998-09-28 1999-10-19 Muller; Peter Controllable-pitch propeller, especially for sport boats and other watercraft
US6379114B1 (en) 2000-11-22 2002-04-30 Brunswick Corporation Method for selecting the pitch of a controllable pitch marine propeller
US8608441B2 (en) * 2006-06-12 2013-12-17 Energyield Llc Rotatable blade apparatus with individually adjustable blades
US7568888B2 (en) * 2006-10-24 2009-08-04 Gm Global Technology Operations, Inc. Fan blades having variable pitch compliantly responsive to a linear actuator
DE102007052427A1 (de) 2007-11-02 2009-05-07 Schaeffler Kg Lageranordnung für ein Lager
JP6920480B2 (ja) * 2017-07-06 2021-08-18 ワルトシラ フィンランド オサケユキチュア 船舶のハイブリッドシステムの内燃機関を始動させる方法及び船舶のハイブリッドシステム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718881A (en) * 1902-06-12 1903-01-20 Della Sarr Propeller-wheel.
US2138574A (en) * 1936-10-06 1938-11-29 James A Gallagher Reverse and variable pitch propeller
US2374833A (en) * 1939-05-22 1945-05-01 Gen Motors Corp Propeller construction
GB824720A (en) * 1956-11-07 1959-12-02 Lips Nv Adjusting mechanism for adjusting the pitch of the blades of a marine propeller
US3095932A (en) * 1959-12-14 1963-07-02 Christopher De J Hercules Variable-pitch blade propeller
CH668046A5 (de) * 1983-09-22 1988-11-30 Peter Mueller Verstellpropeller und antrieb fuer wasserfahrzeuge.
CH666869A5 (de) * 1984-03-16 1988-08-31 Peter Mueller Verstellvorrichtung fuer verstellpropeller von wasserfahrzeugen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031932A1 (de) * 1990-10-09 1992-04-16 Peter Mueller Verstellpropeller

Also Published As

Publication number Publication date
NO165907B (no) 1991-01-21
ES2015018B3 (es) 1990-08-01
EP0258706A1 (de) 1988-03-09
DK160472B (da) 1991-03-18
CA1299031C (en) 1992-04-21
US4880402A (en) 1989-11-14
DE3762500D1 (de) 1990-06-07
NO873539L (no) 1988-02-23
NO873539D0 (no) 1987-08-21
JPH01119497A (ja) 1989-05-11
DK437687D0 (da) 1987-08-21
DK160472C (da) 1991-08-26
CH670609A5 (enrdf_load_stackoverflow) 1989-06-30
NO165907C (no) 1991-05-02
DK437687A (da) 1988-02-23

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