EP0281022A1 - Hélice à pales orientables pour navires - Google Patents

Hélice à pales orientables pour navires Download PDF

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Publication number
EP0281022A1
EP0281022A1 EP88102841A EP88102841A EP0281022A1 EP 0281022 A1 EP0281022 A1 EP 0281022A1 EP 88102841 A EP88102841 A EP 88102841A EP 88102841 A EP88102841 A EP 88102841A EP 0281022 A1 EP0281022 A1 EP 0281022A1
Authority
EP
European Patent Office
Prior art keywords
propeller
adjusting
linkage
shaft
variable pitch
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.)
Granted
Application number
EP88102841A
Other languages
German (de)
English (en)
Other versions
EP0281022B1 (fr
Inventor
Peter Müller
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.)
MUELLER, PETER
Original Assignee
Mueller Peter
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 Mueller Peter filed Critical Mueller Peter
Publication of EP0281022A1 publication Critical patent/EP0281022A1/fr
Application granted granted Critical
Publication of EP0281022B1 publication Critical patent/EP0281022B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a variable pitch propeller for a watercraft, in which the motor shaft of the motor lying in the hull of the watercraft is coupled directly or via a gearbox to the drive shaft of the propeller, which extends through the hull wall and is mounted outside the hull in a shaft bearing, which is supported in a shaft bracket fastened to the fuselage wall and is arranged in the vicinity of the variable pitch propeller, the variable pitch propeller being equipped with adjustable blades mounted in the propeller hub and a push rod linkage being provided for the adjustment of the propeller blades, the push rods of which are provided via a rotary / sliding coupling are displaceable by means of an adjustment linkage which can be actuated manually or by motor from the propeller hub.
  • Variable propellers and their adjusting devices with which the pitch of the propeller blades is adjusted, are known in various designs. They serve on the one hand to make better use of the engine power installed in a watercraft and on the other hand to facilitate the maneuvering of the watercraft.
  • the pitch of the propeller blades can be adapted to the respective application by hand or automatically, it also being possible to adjust the propeller blades for reversing.
  • variable-pitch propeller is driven by a propeller shaft driven by a motor drive inside the watercraft
  • the propeller blades are adjusted in different ways. It is known, for example, to introduce a pressure medium into the propeller hub and thus to act on a piston system arranged in the hub, by means of which the propeller blades are adjusted (US Pat. No. 2,931,443).
  • the rotary-slide coupling consists of a non-rotating part and a rotating part, between which radial and axial bearings are installed, which on the one hand allow the relative movement of the two parts and on the other hand take over the transfer of the adjusting force from the non-rotating to the rotating part.
  • the hub is in part of the rudder blade installed and driven by two angular gears, which create a Z-shaped arrangement of the shaft guide from the drive motor to the adjusting hub.
  • the motor shaft is coupled directly or via a transmission to the propeller shaft, which extends outwards through the hull of the watercraft and carries the variable-pitch propeller at its end. It is necessary to store the propeller shaft near the propeller hub.
  • This shaft bearing is supported on the hull of the watercraft by means of a support body, which is referred to as a shaft bracket.
  • the invention relates to a propeller drive of the second embodiment, and it is an object of the invention to further develop an adjustable propeller of the type described in the introduction in such a way that a simple, inexpensive and streamlined arrangement for the support body and the adjusting linkage is achieved.
  • the support body receiving the shaft bearing and supported on the hull of the watercraft is designed as a carrier of the adjusting linkage.
  • the support body is expediently designed as a hollow body which has access to the interior of the fuselage and in the interior of which the adjusting linkage for accommodating the propeller blades is accommodated.
  • Fig. 1 schematically shown drive for a watercraft
  • 1 denotes an adjustable propeller, which has adjustable propeller blades 2 and a propeller hub 4 driven by a drive shaft 3.
  • the drive point 3 is driven by a drive machine 5 and mounted in a shaft bearing 6, which is arranged on the outflow side of the variable pitch propeller, but in its vicinity.
  • the pitch of the propeller blades 2 is adjusted by means of an adjusting linkage 7 which has 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 supported on the hull of the watercraft.
  • the adjusting lever 8 has an upper and a lower arm 11, 12, the upper arm 11 being coupled via a joint 13 to a bumper 14 of a linear motor 15 driven by a power source 26, while the lower arm 12 is coupled to a via a joint 12 ⁇ Rotary sliding clutch 16 is connected.
  • This coupling has a non-rotating coupling part 17, which is connected to the lower arm 12 via the joint 12 ', while the rotating coupling part 19 is fastened to the drive shaft 3 and the non-rotating part via radial and axial bearings (only one bearing 18 shown schematically) leads.
  • Push rods 20 are supported on the flange 19steil of the rotating coupling part 19, which are guided in the propeller hub 4 and adjust the individual propeller blades 2 simultaneously.
  • the rotary-slide coupling 16 and the push rods 20 form the push rod linkage.
  • the adjustable propeller 1 is arranged fixedly below the hull 25 of a watercraft, a hollow support body 21 being fastened to the hull, at the lower end of which the adjustable propeller is mounted.
  • a shaft bearing 6 is provided in the support body 21 for the mounting of the propeller shaft 3, which is fastened to the support body 21 by means of a support 27.
  • the support 27 can, for example, consist of two struts arranged in a V-shape, which are fastened at two points of the support body 21.
  • a control rudder 22 can be pivoted on the outflow side of the support body 21 by means of hinge joints 24 stored, while the adjustment rod 7 is installed inside the support body 21.
  • the reference symbols not described in FIG. 2 correspond to those in FIG. 1.
  • the linear motor 15 is, for example, a double-acting hydraulic cylinder, the piston rod of which forms the bumper 14 and is connected to the upper arm 11 of the lever 8 by means of the joint 13.
  • the linear motor 15, which can also be an electrical or pneumatic unit, is mounted in the embodiment according to FIG. 2 below the fuselage 25 in the hollow support body 21, but it would also be possible to design the upper arm 11 of the adjusting lever so that it is in the watercraft protrudes and the linear motor 15 would then lie within the hull 25.
  • the fact that the adjustment linkage 7 is used for transferring the adjustment forces into the push rod linkage 16, 20, while the linear motor 15 generates the energy required to overcome the adjustment forces at a distance, results in an effort that can be adapted to any space. and space-saving solution created.
  • variable pitch propeller 1 shows a similar fastening of the variable pitch propeller 1 as shown in FIG. 2, with the difference, however, that the shaft bearing 6 is arranged on the upstream side of the variable pitch propeller 1. However, it is fastened to the inner wall of the support body 21 by the support 27 in the same way as in the embodiment according to FIG. 2. Likewise, the pivot axis 9 of the adjusting lever 8 is supported on the wall of the hollow support body 21.
  • the linear motor 15 is fastened in the interior of the ship's hull 25 by means of a pillow block 28.
  • the support body 21 has a flange 29 with which it is fastened to the fuselage 25 by means of screws 30.
  • a flange 29 In the fuselage 25 itself there is a narrow opening 31 through which the upper arm 11 of the adjusting lever 8 extends.
  • the opening 31 is sealed by a seal 32, e.g. a bellows seal, protected against water ingress.
  • the lower arm 12 of the adjusting lever 8 has at its free end a yoke 36 which engages over the propeller shaft 3.
  • joints 37 are provided, in which a bracket 35 with tabs 38 is mounted.
  • the tabs 38 are connected via joints 39 to the displaceable, non-rotating part 17 of the rotary-sliding coupling 16, while the rotating part 19 is connected to the push rods 20 (not shown).
  • the push rod linkage 16 With regard to the details of the push rod linkage 16, 20, reference is made to the EP application 86117737.6.
  • Fig. 4 it can be seen that three push rods 20 are provided which are attached to the flange 19 ⁇ of the rotating part 19.
  • the support body 21 is closed in the area of the shaft bearing 6 by a cover 40, while the propeller hub is covered by a streamlined hood 41.
  • FIG. 5 shows a similar embodiment of the support body 21, with the difference that passages 42 are provided in the hub of the variable pitch propeller, through which passages the engine exhaust gases are derived from engines arranged in the interior of the ship's hull.
  • the hood 41 is omitted here.
  • the engine exhaust gases are conducted through a line 43 into the interior of the support body 21, from where they emerge into the water through the passages 42 of the hub of the variable pitch propeller.
  • variable pitch propellers described are characterized by the fact that they represent a space-saving solution.
  • the arrangement of the adjustment linkage 7 for the adjustment of the propeller blades 2 makes it possible to choose a narrow and therefore aerodynamic shape of the support body 21, so that the overall resistance of these embodiments is hardly greater than for a propeller with fixed blades.
  • the support body 21 has a double function here: on the one hand it forms the shaft bracket for supporting the shaft bearing 6 on the ship's hull 25 and on the other hand it accommodates and supports the adjusting linkage 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Motor Power Transmission Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP19880102841 1987-03-04 1988-02-25 Hélice à pales orientables pour navires Expired - Lifetime EP0281022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21653 1987-03-04
US2165387A 1987-03-14 1987-03-14

Publications (2)

Publication Number Publication Date
EP0281022A1 true EP0281022A1 (fr) 1988-09-07
EP0281022B1 EP0281022B1 (fr) 1992-10-28

Family

ID=21805428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880102841 Expired - Lifetime EP0281022B1 (fr) 1987-03-04 1988-02-25 Hélice à pales orientables pour navires

Country Status (4)

Country Link
EP (1) EP0281022B1 (fr)
JP (1) JPS63240492A (fr)
DE (1) DE3875500D1 (fr)
ES (1) ES2035122T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107839864A (zh) * 2017-11-08 2018-03-27 镇江市丹徒区顺发船舶螺旋桨有限公司 一种螺旋桨的保护装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB562845A (en) * 1941-12-26 1944-07-19 Automotive Prod Co Ltd Improvements in or relating to variable pitch propellers for water craft
US3567334A (en) * 1968-09-09 1971-03-02 Michigan Wheel Co Flow-through propeller
EP0140097A1 (fr) * 1983-09-22 1985-05-08 Peter Müller Hélice à pales orientables et propulsion pour véhicules nautiques
EP0154954A2 (fr) * 1984-03-16 1985-09-18 Peter Müller Dispositif pour changer le pas d'une hélice marine à pas variable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB562845A (en) * 1941-12-26 1944-07-19 Automotive Prod Co Ltd Improvements in or relating to variable pitch propellers for water craft
US3567334A (en) * 1968-09-09 1971-03-02 Michigan Wheel Co Flow-through propeller
EP0140097A1 (fr) * 1983-09-22 1985-05-08 Peter Müller Hélice à pales orientables et propulsion pour véhicules nautiques
EP0154954A2 (fr) * 1984-03-16 1985-09-18 Peter Müller Dispositif pour changer le pas d'une hélice marine à pas variable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107839864A (zh) * 2017-11-08 2018-03-27 镇江市丹徒区顺发船舶螺旋桨有限公司 一种螺旋桨的保护装置
CN107839864B (zh) * 2017-11-08 2024-03-12 镇江市丹徒区顺发船舶螺旋桨有限公司 一种螺旋桨的保护装置

Also Published As

Publication number Publication date
EP0281022B1 (fr) 1992-10-28
ES2035122T3 (es) 1993-04-16
DE3875500D1 (de) 1992-12-03
JPS63240492A (ja) 1988-10-06

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