• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This invention relates to a method and a Propeller Pitch Control Arrangement, comprising a propeller hub (1) hav-ing a number of interface fittings (10) for adjustable pitch positioning of a propeller blade, a positioning device (3), Within saidhub (l), having a number of propeller control inteñaces (34) and an actuator airangernent (2, 4, Si) arranged to move and positionsaid positioning device (3) to enable Varying pitch for said propeller blades, characterized in - ïhaat said actuator airangernent in-cludes a rotatable shaft (2) with threads (20) interacting With mating threads (30) at said positioning device (3), and, - that said ro-tatable shafi (2) is driven by a motor device (4, 5) positioned adjacent said hub (l). - ' AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, -
    公开号:SE1150289A1
    申请号:SE1150289
    申请日:2009-10-12
    公开日:2011-06-21
    发明作者:Jan-Olov Forsstroem
    申请人:Rolls Royce Ab；
    IPC主号:
    专利说明:

    35 success. WO963l390 and US 20040l57509 also show in a similar way solutions which are bulky and complex, e.g. by using a non-uniform hub body in WO963 1390 and by using an adjusting device which forms a plurality of bodies in US 20040157509.
    DISCLOSURE OF THE INVENTION An object of the invention is to eliminate or at least minimize the above-mentioned problems, which is achieved by means of a method and a device according to the independent claims.
    Thanks to the invention, a device is created which requires considerably less input power compared with conventional systems and which is both compact and relatively simple in its construction. As a consequence, the device becomes significantly less expensive both initially and even during use. In addition, it facilitates a much more reliable solution regarding environmental aspects such as eliminating oil leakage. Furthermore, it offers a device that is less noisy than conventional systems. Overall, the new device offers synergy benefits that must be considered surprising. Especially in combination with the use of a self-braking transmission between the pitch adjusting device and the rotatable shaft, these advantages are really surprising, since thanks to a self-braking cooperation there is no need for any additional means to ensure control to achieve the desired positioning, which enables a very compact construction.
    Additional aspects and advantages of the invention will be apparent from the detailed description below.
    BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a cross-sectional view of a first embodiment of a device according to the invention, Fig. 2 shows an exploded view of the device shown in Fig. 1, and Fig. 3 shows a further embodiment of the invention in a cross-sectional view. .
    DETAILED DESCRIPTION Fig. 1 shows a propeller hub 1 with four interface couplings 10 for propeller blades (not shown). The hub 1 has a hub body in the form of an integral piece which is fixedly mounted on a propeller shaft 9 by means of a shaft 90. A rotatable motor shaft 2 is arranged coaxially with the propeller shaft 9 and has an end 22 which is rotatably fixed in a bearing 31. At the end of the propeller shaft 9 and another bearing device 21 which is arranged in the outer wall IB of the propeller hub 1. The motor shaft 2 projects through the outer wall 1B where it is attached at its end to a motor 4 by means of a conventional coupling device 41 (eg wedge joints). The motor 4 consists of an electric motor driven by electric cables 7 which pass through a center hole 91 in the propeller shaft 9 and also through a center hole 29 in the motor shaft 2. The motor 2 conventionally comprises a stator 45 which is fixedly mounted at the hub 1 , either directly on the outer hub wall IB and / or on the motor 6 which is also fixedly mounted to the outer wall IB. The rotor 42, 43 comprises an inner cylindrical portion 42 (locked to the shaft by means of 41) and windings 43 connected thereto.
    The motor shaft 2 is provided with external threads 20 and passes through a nut device 31 with matching threads 30. The nut device 31 is fixedly mounted (Lex. With screws 33) at the pitch adjusting device 3, which is centrally arranged inside the hub 1.
    As can be seen, the pitch adjusting device 3 has a body unit with the nut device 31 centrally positioned and which body directly interacts with each of the propeller blades by means of its eccentrically positioned interface devices 34.
    Consequently, by rotating the rotor 42, 43 of the motor 4, the shaft 2 will rotate and force the pitch control device 3 to move linearly forwards or backwards, depending on the direction of rotation. When moving the propeller adjusting device 3, the interface devices 34, which cooperate eccentrically and directly with each of the propeller blades, lead to the adjustment of the pitch in each propeller by rotation inside the hub interface device 10. Thanks to the use of self-inhibiting interaction between the threads 20 , Precise positioning of the propeller pitch adjusting device 3 can be achieved when stopping the power supply, since the pitch adjusting device 3 then stays exactly in the desired position without any delay.
    Fig. 2 shows an exploded view of the embodiment of the invention shown in Fig. 1. Most details shown in the exploded view have already been explained with reference to Fig. 1 and do not require any further explanation. The exploded view, however, shows in more detail a seal 8 used for sealing between the hub 1 and the motor housing 6. An advantage which is clear when looking at this exploded view is that many of the details used for this new pitch adjustment device are the same. such as those used in a conventional system. For example, the pitch control device 3, the hub 1, the interface 10 and 34 can advantageously be of the same type as those used in known systems, which provides a cost-effective concept. As can be seen, thanks to the use of a self-inhibiting interaction between the threads 20, the motor 4 can fit in a relatively small space, which enables a motor housing 6 which is smaller in diameter than the hub 1.
    Fig. 3 shows a further embodiment of the invention which in many respects is similar to what is described above. A significant difference is that in the embodiment shown in Fig. 3 it is stated that instead of an electric motor 4 a hydraulic motor 5 is used. The hydraulic motor is supplied with hydraulic oil by means of a pair of channels which pass through the center hole 91 in the propeller shaft 9 inside a pipeline 50. The motor shaft 2 is fixedly mounted to the hydraulic motor 4, which can rotate the motor shaft 2 clockwise or counterclockwise depending on the direction of supply of the oil used, as is known per se. Accordingly, exactly the same kind of functionality is used to surface and position the pitch control device 3 in this embodiment as in the one described above. Due to the positioning of the engine 5 at the side 1A of the hub 1 facing the propeller shaft 9, the longitudinal extent of the hub 1 becomes no longer than a conventional device. Instead, a space 91 is formed inside the end portion of the propeller shaft 9, in which the motor housing 5 is housed.
    Consequently, this embodiment offers a very compact construction.
    The invention is not limited to what is described above but can be varied within the scope of the appended claims. It is obvious to the person skilled in the art that in fact an electric motor can also be used in the concept shown in Fig. 3 and vice versa a hydraulic motor 5 in Figs. Furthermore, it is obvious that the basic principles of the invention can also be used in connection with cooperating threads which do not provide self-braking, in at least some installations. Furthermore, it is obvious that many other variations can be used without departing from the main principles of the invention, e.g. divide the propeller shaft into different sections (eg to enable simple production of an engine compartment 91), the use of different materials depending on specific requirements / wishes, etc. In addition, it is obvious that in most applications the invention will be used in connection with a control system, comprising some kind of processor device cooperating with any sensor device for controlling the pitch of said propeller blade in an automatic or semi-automatic manner. In this respect, it will be apparent to those skilled in the art that many different types of sensor means can be used to detect the position of at least one propeller and / or the positioning device 3, and / or one or more parts of the operating device 2, 4, 5.
    In a preferred embodiment, the sensors can use the same type of cable line as for other electrical means, e.g. the electric motor 4.
    权利要求:
    Claims (12)
    [1] 1. WO 2010/044733 i PCT/SE2009/05115l CLAlMS l. “'30 5 2. 3.20 4. 6.7. Propeller PitchControl Arrangement, comprising a propeller hub (1) having a number of interface fittings (10) for, adjustable pitch positioningof a propeller blade, a positioning device (3), Within said hub (l), having a number 'of propeller control interfaces (34) and an actuator arrangement (2, 4, 5) arranged to move and position said positioning device (3) »to enable varying pitch for said propeller blades, Wherein said actuator arrangement (2, 4, 5) is driven by a motor device (4,5) positioned adjacent said hub ( l), characterized in ~ _ - that said actuator arrangement includes a single rotatable shaft (2) Withthreads (20) interacting with rnating threads (30) at said positioning device(3), that are arranged to be self braking. i Arrangement according to claim l, characteriz e d in, said hub (l) has a hub body (l) in the form of a unitary piece. Arrangement according, to claim l, c h ar a ct e ri z e d in that said motor device(4, 5) is positioned coaxially in relation to the axis of the propeller shaft (9)driving said propeller hub (l). Arrangement according to claim 2, c h a r a c t er i z e d in that said motor device . (4, 5) is positioned ina space (91) formed at the side (lA) of the hub (l) facing the propeller shaft (9). “ Arrangement in accordance With claim 3, c h a r a c t eriz e d . in that said space i (91) is formed by cavity in the end of said shaft (9). Arrangernent in accordance With claim 2, c h a r a c t e r iz e d in that. said motordevice (4, 5) is positioned at an opposite side (lB) of the hub (l) in relation tothe side ( 1A) facing the propeller shaft (9). ' Arrangement according to any preceding claim, c h a r a ct e ri z e d in that .atleast one of the hearing locations (21) for said shaft (2) is arranged in a Wall(lB) of said hub ( l) located at the opposite side in relation to the» propeller shaft ' (9). WO 2010/044733 _ 8. PCT/SE2009/051151 _ ÖnArrangement according to any preceding claim, c h ar a c t e ri z e d in said ' ~positioning device (3) has a body that forrris a unitary piece. i Method for propeller pitch control, comprising the. steps of:- providing a propeller hub (l) having a number of interface fittings (10) foradjustable pitch positioning of a propellerblade, ' ' f providing apositioning device (3), Within said hub (l), having a number of io. ll. 12. propeller control interfaces (34), and- providing an actuator arrangement (2, 4, 5) and a motor device (4, 5)positioned adjacent said hub arranged to move and position said positioningdevice to enable varying pitch for said propeller blades, c h ar a c t e ri z e db Ya Iproviding said actuator arrangement to include a single rotatable shaft (2) Withthreads (20) interacting With mating threads (30) at said positioning device (3)that are arranged to be self braking, and by arranging said' motor device a to rotate said rotatable shaft (2). Method in accordance With claim 8, c h ar a c t e ri z e d b y providing said hub(1) in the form of a hub body ( 1) presenting a unitary piece. Method according to clairn 9, c h ar a c t e ri z e d b y providing sensor meansdetecting the position of at least one propeller and/or said positioning device _(3),and/or said 'actuator arrangement (2, 4, 5) and by providing a processor device interacting With said sensor devices to control pitch of said propeller blades. Method according to any of claim 9-11, c h ar a ct e ri z e d in said positioning -device (3) forms a body unit.
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    同族专利:
    公开号 | 公开日
    US8777575B2|2014-07-15|
    US20110200433A1|2011-08-18|
    WO2010044733A1|2010-04-22|
    SE535900C2|2013-02-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2675084A|1947-08-26|1954-04-13|Harry J Nichols|Controllable reversible pitch propeller|
    GB822469A|1957-04-15|1959-10-28|Hindmarch Thomas|Thread and nut actuation of marine controllable pitch propeller|
    GB2016598A|1979-02-28|1979-09-26|Westeel G|A bladed rotor with variable-pitch blades|
    US5498135A|1995-01-17|1996-03-12|Newport News Shipbuilding And Dry Dock Company|Actuator for a variable pitch propeller|
    US5600936A|1995-04-06|1997-02-11|Moncrief; Frank|Suspended modular partition inserter|
    US5795132A|1995-04-07|1998-08-18|Something Else Limited Liability Co.|Variable pitch propeller|WO2006017726A2|2004-08-05|2006-02-16|Ivax Drug Research Institute Ltd|Polysulfated glycosides and salts thereof|
    US9567049B2|2013-09-20|2017-02-14|Mehmet Nevres ULGEN|Self-adjustable pitch propeller|
    US9611020B2|2013-08-01|2017-04-04|Mehmet Nevres ULGEN|Mechanically-adjustable pitch propeller|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE0850038|2008-10-16|
    SE1150289A|SE535900C2|2008-10-16|2009-10-12|Propeller pitch control device|
    PCT/SE2009/051151|WO2010044733A1|2008-10-16|2009-10-12|Method and arrangement for propeller pitch control|SE1150289A| SE535900C2|2008-10-16|2009-10-12|Propeller pitch control device|
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