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公开(公告)号：US5282719A
公开(公告)日：1994-02-01
申请号：US700385
申请日：1991-05-13
Applicant: Frederick B. McCarty , Thomas F. Fitzgibbon
Inventor： Frederick B. McCarty , Thomas F. Fitzgibbon
CPC classification number: F01D7/00 , B64C11/32 , B64C11/44 , F05D2260/74 , F05D2260/76 , Y02T50/671 , Y02T50/673 , Y10T74/173 , Y10T74/18576
Abstract: Blade pitch is changed by an actuator that is responsive to the relative rotation of two input members. Blade pitch is not changed when the members are rotated at the same speed. However, blade pitch is changed in one direction when a braking torque is applied to one member, and blade pitch is changed in an opposite direction when a braking torque is applied to the other member.
Abstract translation: 叶片间距由响应于两个输入构件的相对旋转的致动器而改变。 当构件以相同的速度旋转时，叶片间距不变。 然而，当向一个构件施加制动转矩时，叶片节距在一个方向上变化，并且当制动转矩施加到另一构件时叶片节距沿相反方向改变。
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42.发明授权
公开(公告)号：US5028207A
公开(公告)日：1991-07-02
申请号：US433543
申请日：1989-11-08
Applicant: Alois Rohra , Helmut-Arnd Geidel
Inventor： Alois Rohra , Helmut-Arnd Geidel
CPC classification number: B64C11/306 , B64D2027/005 , Y02T50/66
Abstract: An arrangement for the adjusting of rotor blades of a propfan turboprop engine equipped with two counter-rotating propfan rotors has a number of double-toothed planet wheels which are fastened in a rotatably disposed web. The web is supported on the side of the housing by planet members disposed on one of the propfan rotors. The two toothings of the planet wheels are in operative connection with ball spindle adjusting rings. Using an adjusting motor, a relative movement of the web can be achieved with respect to the housing, whereby the blades of two counter-rotating rotor blade rings can be swivelled. According to the invention, an adjustment of rotor blades will also be possible when no stationary housing parts are available for the support.
Abstract translation: 配备有两个反向旋转螺杆转子的丙烷涡轮螺旋桨发动机的转子叶片的调整装置具有多个双齿行星轮，其被紧固在可旋转布置的卷筒纸中。 通过设置在其中一个螺杆转子上的行星构件将该网支撑在壳体的侧面上。 行星轮的两个齿轮与球轴调节环有效连接。 使用调节马达，可以相对于壳体实现卷筒纸的相对运动，由此两个相对转动的转子叶片环的叶片可以旋转。 根据本发明，当没有固定的壳体部件可用于支撑件时，转子叶片的调节也是可能的。
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公开(公告)号：US4968217A
公开(公告)日：1990-11-06
申请号：US403376
申请日：1989-09-06
Applicant: Arnold C. Newton
Inventor： Arnold C. Newton
CPC classification number: F01D1/30 , B64C11/32 , F01D7/00 , F02K1/66 , F04D29/323 , F05D2260/74 , F05D2260/76
Abstract: A variable pitch arrangement to enable reverse pitch settings of fan blades to be achieved without the leading and trailing edges of adjacent fan blades abutting each other comprises two sets of fan blades and two sets of actuators. The two sets of fan blades are rotatably mounted on the fan rotor, and arranged circumferentially on the fan rotor. The blades in the first set of fan blades are arranged alternately circumferentially with the blades in the second set of fan blades. There are equal numbers of blades in each set of fan blades. The two sets of actuators act independently of each other on the two sets of fan blades such that the pitch of the blades in the first set and the pitch of the blades in the second set are varied in a phased relation to prevent fouling of the blades. Initially one set of blades varies pitch quickly while the other set of blades varies pitch slowly, and then the first set of blades varies pitch slowly while the other set of blades varies pitch quickly.
Abstract translation: 可以实现可以实现风扇叶片的反向间距设置而不相邻的相邻风扇叶片的前缘和后缘的可变桨距布置，包括两组风扇叶片和两组致动器。 两组风扇叶片可旋转地安装在风扇转子上，并且周向设置在风扇转子上。 第一组风扇叶片中的叶片与第二组风扇叶片中的叶片周向交替布置。 每组风扇叶片中刀片数量相等。 两组致动器在两组风扇叶片上彼此独立地起作用，使得第一组中的叶片的桨距和第二组中的叶片的桨距以相位关系改变，以防止叶片的结垢 。 最初，一组叶片快速变化，而另一组叶片缓慢变化，然后第一组叶片缓慢变化，而另一组叶片则快速变化。
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公开(公告)号：US4753572A
公开(公告)日：1988-06-28
申请号：US914705
申请日：1986-10-02
Applicant: Edward H. Kusiak
Inventor： Edward H. Kusiak
CPC classification number: B64C11/30
Abstract: A mechanical pitch lock includes a pitch lock screw (60) that simultaneously rotates within an actuator (42) while the actuator moves to change the pitch of a propeller blade (16). While rotating simultaneously with the motion of the pitch actuator, the pitch lock screw maintains a longitudinal position allowing the actuator to move. If the pitch lock screw does not rotate simultaneously with the actuator, the pitch lock screw moves longitudinally with the actuator until it abuts a projection 66 thereby preventing further movement by the actuator.
Abstract translation: 机械俯仰锁包括在致动器（42）内同时旋转的俯仰锁定螺钉（60），同时致动器移动以改变螺旋桨叶片（16）的俯仰。 当与桨距致动器的运动同时旋转时，俯仰锁定螺钉保持允许致动器移动的纵向位置。 如果俯仰锁定螺钉不与致动器同时旋转，则俯仰锁定螺钉与致动器纵向移动，直到其抵靠突起66，从而防止致动器进一步移动。
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公开(公告)号：US4738590A
公开(公告)日：1988-04-19
申请号：US905213
申请日：1986-09-09
Applicant: Lawrence Butler
Inventor： Lawrence Butler
CPC classification number: F01D7/00 , B64C11/32 , F16H1/32 , B64D2027/005 , F05D2260/74 , F05D2260/76 , F16H2001/2881 , Y02T50/66 , Y02T50/671
Abstract: An apparatus for varying the pitch of propulsor blades of a gas-turbine engine by eccentrically driven gears. A first gear is coaxially coupled to one of the propulsor blades whereby angular displacement of the first gear with respect to an engine center-line causes angular displacement of the propulsor blade. A second gear is rotatably coupled to the first gear with one of the first gear and second gear being a first internal gear and the other being a first mating gear. The first internal gear is eccentrically disposed with respect to the first mating gear and has more teeth than does the first mating gear. A third gear is rigidly coupled to the second gear. A fourth gear is rigidly coupled to a rotating structure of the engine and rotatably coupled to the third gear with one of the third gear and fourth gear being a second internal gear and the other being a second mating gear. The second internal gear is eccentrically disposed with respect to the second mating gear. The blade pitch mechanism also includes a mechanism for eccentrically revolving the second and third gears with respect to the first and fourth gears respectively, whereby the first gear is angularly displaced with respect to the fourth gear.
Abstract translation: 一种用于通过偏心驱动的齿轮改变燃气涡轮发动机的推进器叶片的桨距的装置。 第一齿轮同轴联接到推进器叶片中的一个，由此第一齿轮相对于发动机中心线的角位移导致推进器叶片的角位移。 第二齿轮可旋转地联接到第一齿轮，第一齿轮和第二齿轮中的一个是第一内齿轮，而另一个是第一配合齿轮。 第一内齿轮相对于第一配合齿轮偏心设置并且具有比第一配合齿轮更多的齿。 第三档刚性地联接到第二档。 第四齿轮刚性地联接到发动机的旋转结构并且可旋转地联接到第三齿轮，其中第三齿轮和第四齿轮中的一个是第二内齿轮，而另一个是第二配合齿轮。 第二内齿轮相对于第二配合齿轮偏心地设置。 叶片桨距机构还包括用于相对于第一和第四齿轮偏心地旋转第二和第三齿轮的机构，由此第一齿轮相对于第四档位成角度地移位。
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Patent Agency Ranking
公开(公告)号：US4704067A
公开(公告)日：1987-11-03
申请号：US874841
申请日：1986-06-16
Applicant: Robin D. Fisher
Inventor： Robin D. Fisher
Abstract: A pitch control mechanism for propellers uses an elongated flat strip twisted into a helicoidal. The helicoidal is longitudinally slidable within a hollow propeller shaft. A cup-shaped cylindrical control ring coaxially mounted with respect to the front transverse surface of the propeller shaft is supported by an inner bearing ring permitting both longitudinal and rotational movement of the control ring relative to the propeller shaft. The control ring has a rectangular slot in its disc-shaped front face which fits conformally over the transverse cross section of the helicoidal. Longitudinal motion of the helicoidal therefore causes rotation of the control ring. Propeller blades are fastened to support rods terminating in downward extending, bifurcated fork-like support structures. The front tine of each fork is rotatably supported in a radial hole in the control ring, while the rear tine is rotatably supported by an axial hole in the propeller shaft. Rotation of the control ring relative to the propeller shaft causes rotation of each propeller blade support rod about its own axis, effecting uniform change in pitch of each propeller blade.
Abstract translation: 螺旋桨的桨距控制机构使用扭曲成螺旋形的细长扁平条。 螺旋形可在空心螺旋桨轴内纵向滑动。 相对于传动轴的前横向表面同轴安装的杯形圆柱形控制环由允许控制环相对于推进器轴的纵向和旋转运动的内轴承环支撑。 控制环在其盘形前表面上具有矩形槽，该矩形槽适合螺旋形的横截面。 因此，螺旋体的纵向运动导致控制环的旋转。 螺旋桨叶片被紧固到支撑杆，其终止于向下延伸的，分叉的叉形支撑结构。 每个叉的前齿可旋转地支撑在控制环中的径向孔中，而后叉由螺旋桨轴中的轴向孔可旋转地支撑。 控制环相对于推进器轴的旋转导致每个螺旋桨叶片支撑杆绕其自身的轴线旋转，从而实现每个螺旋桨叶片间距的均匀变化。
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公开(公告)号：US4688995A
公开(公告)日：1987-08-25
申请号：US832771
申请日：1986-02-25
Applicant: William B. Wright , Addison C. Maguire
Inventor： William B. Wright , Addison C. Maguire
CPC classification number: B64C11/306
Abstract: A propeller module for an aero gas turbine engine comprises two contra-rotating propellers driven by a reduction gearbox positioned axially between the propellers.Pitch change mechanisms operated by a pitch change power unit are provided to change the pitch of the propeller blades. The pitch change power unit is positioned in the hub of the second multi-bladed propeller and is remote from the first multi-bladed propeller. The first and second pitch change mechanisms are mounted on the reduction gearbox. The first pitch change mechanism comprises first pitch change gears which are rotatably mounted on a carrier of the reduction gearbox by spindles which extend axially through planet gears of the gearbox. The second pitch change mechanism comprises second pitch change gears rotatably mounted on the carrier.
Abstract translation: 用于航空燃气涡轮发动机的螺旋桨模块包括由轴向位于螺旋桨之间的减速齿轮箱驱动的两个反向旋转螺旋桨。 提供由变桨动力单元操作的俯仰变化机构以改变螺旋桨叶片的桨距。 变桨动力单元位于第二多叶螺旋桨的轮毂中，并且远离第一多叶螺旋桨。 第一和第二变桨机构安装在减速齿轮箱上。 第一变桨机构包括通过轴向可旋转地安装在减速齿轮箱的行星架上的第一变桨齿轮，轴通过齿轮箱的行星齿轮延伸。 第二间距变换机构包括可旋转地安装在托架上的第二变桨齿轮。
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公开(公告)号：US4660437A
公开(公告)日：1987-04-28
申请号：US763281
申请日：1985-08-07
Applicant: Craig H. Scott
Inventor： Craig H. Scott
CPC classification number: B64C11/32
Abstract: An apparatus for controlling pitch variations of the blades of a propeller. A first planetary gearset includes a sun gear, a ring gear and at least one planetary gear meshed with the sun and ring gears, the sun gear being statically grounded. A second planetary gearset is stacked in concentric juxtaposition with the first planetary gearset and includes a sun gear, a ring gear and at least one planetary gear meshed with the sun and ring gears. The planetary gears of the respective gear sets are coupled for conjoint orbiting about their respective sun gears. A main rotor drive input is coupled to the ring gear of the second planetary gearset. A blade actuator output is coupled to the ring gear of the first planetary gearset to be rotated thereby. A selectively operable differential drive input is coupled to the sun gear of the second planetary gearset, whereby inoperation of the differential drive input effectively grounds the sun gear and permits the main rotor drive input and the blade actuator output to rotate at the same speed. Selective operation of the differential drive input to rotate the sun gear of the second planetary gearset effects a differential speed between the rotor drive input and the blade actuator output.
Abstract translation: 一种用于控制螺旋桨叶片桨距变化的装置。 第一行星齿轮组包括太阳齿轮，环形齿轮和与太阳和环形齿轮啮合的至少一个行星齿轮，太阳齿轮静止地接地。 第二行星齿轮组与第一行星齿轮组并置并置，并包括太阳轮，环形齿轮和与太阳和环形齿轮啮合的至少一个行星齿轮。 各个齿轮组的行星齿轮被联接以围绕它们各自的太阳齿轮共同旋转。 主转子驱动输入端连接到第二行星齿轮组的环形齿轮。 叶片致动器输出端连接到第一行星齿轮组的齿圈，由此旋转。 可选择性地操作的差速驱动输入端连接到第二行星齿轮组的太阳齿轮，由此差速驱动输入的操作有效地使太阳齿轮接地，并允许主转子驱动输入和叶片致动器输出以相同速度旋转。 用于旋转第二行星齿轮组的太阳齿轮的差动驱动输入的选择性操作会影响转子驱动输入和叶片执行器输出之间的差速。
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公开(公告)号：US4021142A
公开(公告)日：1977-05-03
申请号：US513323
申请日：1974-10-09
Applicant: John A. Violette
Inventor： John A. Violette
CPC classification number: F04D29/323 , F01D7/00 , F02C7/36 , F02K3/06 , F05D2220/36 , F05D2260/40311 , F05D2260/56 , F05D2260/74 , F05D2260/79
Abstract: A pitch-change apparatus for a ducted thrust fan having a plurality of variable pitch blades employs a rotatable ring bearing a plurality of camming members, and each of the plurality of blades is connected with a pitch-change horn engaged by one of the camming members. The ring and camming members rotate coaxially about a hub axis with the blades and rotate about the hub axis relative to the blades to collectively change blade pitch. The rotatable ring, the camming members and the pitch-change horns develop a variable mechanical advantage, and the pitch horns are connected with their respective blades so that the minimum mechanical advantage corresponds with the low-load, feathered pitch position of the blades and greater mechanical advantages correspond with the higher load, forward and reverse pitch positions of the blades.
Abstract translation: 具有多个可变桨距叶片的管道式推力风扇的桨距变换装置采用一个可旋转的环，该旋转环带有多个凸轮构件，并且多个叶片中的每一个叶片与由一个凸轮构件 。 环和凸轮构件围绕具有叶片的轮毂轴线同轴旋转并且相对于叶片围绕轮毂轴线旋转以共同地改变叶片间距。 可旋转的环，凸轮构件和变桨的角度产生可变的机械优点，并且桨距喇叭与它们各自的叶片连接，使得最小的机械优点对应于叶片的低负荷，羽化俯仰位置和更大的 机械优点对应于叶片的较高负载，前进和后退桨距位置。
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公开(公告)号：US3873235A
公开(公告)日：1975-03-25
申请号：US40206773
申请日：1973-10-01
Applicant: GEN ELECTRIC
Inventor： MENDELSON IRWIN
CPC classification number: F01D7/00 , F05D2220/36 , F05D2260/74 , F05D2260/76
Abstract: A turbofan engine is provided with an actuator for varying the fan pitch angle by rotating individual fan blades within apertures in an associated fan disc. The actuator includes a shaft, a sleeve circumscribing the shaft, and a casing receiving both the shaft and the sleeve. Means between the casing and the blade shank rotate the blade (to change its pitch) in response to relative rotation between the casing and the shaft. In order to lock the fan blades in selected pitches between pitch changes, a pitch lock is provided which utilizes a locking piston and a thrust collar cooperating respectively with the casing and the shaft and incorporating interlocking releasable teeth. The locking piston is biased by spring means into a locking relationship with the thrust collar so that if pressure is lost in a main actuating cylinder (within which both the locking piston and an actuator piston are disposed), a fail-safe pitch locked status is assumed by the fan. In order to sense the pitch angle, means are provided for reading the axial position of the actuator piston and, hence, the pitch angle of the fan at any given instant.
Abstract translation: 涡轮风扇发动机设置有致动器，用于通过在关联的风扇盘中的孔内旋转各个风扇叶片来改变风扇俯仰角。 致动器包括轴，限定轴的套筒和容纳轴和套筒的壳体。 壳体和叶片柄之间的装置响应于壳体和轴之间的相对旋转而旋转叶片（以改变其节距）。 为了将风扇叶片在间距变化之间以选定的间距锁定，提供了一种俯仰锁，其利用分别与壳体和轴配合的锁定活塞和推力轴环，并且包括互锁的可释放的齿。 锁定活塞被弹簧装置偏置成与止推环的锁定关系，因此如果主致动缸（其中锁定活塞和致动器活塞都被设置在其中）中的压力损失，故障安全螺距锁定状态 由风扇承担 为了感测俯仰角，提供了用于读取致动器活塞的轴向位置的装置，并且因此设置在任何给定时刻的风扇的俯仰角。
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