EP1488111A1 - Linear, hydraulic pivot drive - Google Patents
Linear, hydraulic pivot driveInfo
- Publication number
- EP1488111A1 EP1488111A1 EP03718601A EP03718601A EP1488111A1 EP 1488111 A1 EP1488111 A1 EP 1488111A1 EP 03718601 A EP03718601 A EP 03718601A EP 03718601 A EP03718601 A EP 03718601A EP 1488111 A1 EP1488111 A1 EP 1488111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- output shaft
- drive according
- swivel drive
- linear hydraulic
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
Definitions
- the present invention relates to a linear, hydraulic pivot drive according to the preamble of claim 1.
- Such linear drives find e.g. for flap control aerodynamic profiles application.
- a known drive for controlling a rotor blade aileron is described for example in GB 2 299 562 A.
- the shaft is provided with a coarse thread.
- the coarse thread engages in a plurality of bushings, which surround the shaft concentrically, so that the bushes undergo a rotation during axial displacement of the shaft.
- a torque support of the shaft is required, in turn, to prevent their rotation effectively.
- the mechanism includes several components, including separate holes into which the shaft is inserted, and retention pins. Such an arrangement not only has relatively large dimensions, but also leads to intensive assembly and maintenance work.
- steep-thread swivel motors which convert an axial displacement of a hydraulic working piston via coarse thread in a rotary motion of an output shaft.
- the torque support of the working piston for example, by two opposing threads that engage in both sides of the piston.
- the threads can be arranged except axially one behind the other also radially nested.
- any reduction of the arrangement is not possible.
- Commercial drives are thus usually relatively large.
- mini-flaps which differ from conventional flaps with 10 to 30% clean wing depth in that they have a depth of only 1-3% and like a flap of a fixed and a knocked out part.
- An aerodynamic profile with such a mini flap is described for example in our unpublished patent application DE 101 56 733.
- a deflection of the mini flap with conventional levers would not only bring unfavorable flow conditions, but also a high weight, as several levers would be required. Likewise, a high installation and maintenance costs would be required.
- the flap actuator should be designed for greater integration of the functional tasks of the drive and the supporting structure.
- a limenförrnige or areal power distribution is desirable to meet the flap-specific requirements.
- the present invention the object of the invention to provide a linienformigen, hydraulic rotary actuator, which has a small size and a simple structure, so that it can be integrated into existing structures and requires low maintenance.
- a linienformigen, hydraulic rotary actuator comprising a housing with connections for the introduction of a hydraulic medium, a arranged within the housing piston which is axially displaceable by the action of the hydraulic medium, and a co-driven output shaft which cooperates with the piston to transmit the axial movement of the piston in a rotational movement
- the output shaft is introduced into the piston, wherein the coarse threads are formed in the same direction and engage in the piston, and that the Kolbenquerscbnitt has a polygonal profile, to effectively prevent a rotational movement of the piston.
- the piston cross section By forming the piston cross section in the form of a polygon profile, the torque support for preventing rotation of the piston is ensured by itself.
- the polygon profile is provided in the engagement area of the output shaft and piston, i. in the cross-sectional area of the piston where the output shaft and piston engage with each other.
- the polygonal profile may be formed along the entire piston.
- the polygonal profile is a P4C profile according to DIN standard 32712. It is particularly advantageous in this case that the axial displaceability is ensured under torque force. In this way, no additional mechanisms and components are required to prevent rotation of the piston. A simple structure is guaranteed.
- the pivot drive is much smaller than known arrangements by such a configuration. It is particularly expedient in this case that the output shaft is inserted into both sides of the piston.
- the output shaft has two separate sections, at their respective ends engaging in the piston, the same direction coarse thread are arranged. In this way it is achieved that the direction of rotation of the output shaft sections is identical.
- the output shaft sections are rotationally symmetrical with each other via a spacer pin, wherein the spacer pin is inserted into respective bores provided in the output shaft sections.
- the piston is provided on both sides with threaded bushes, in which engage the coarse thread of the output shaft sections. In this way, as already mentioned, a uniform direction of rotation of the output shaft sections is effected. In addition, this ensures the largest possible power transmission.
- the piston has a central bore through which the spacer pin is performed.
- the spacer pin is stored in a simple manner.
- a bearing can be arranged in the central bore.
- axial-radial bearings preferably roller bearings
- the axial and radial components may also be formed separately. These bearings allow a good absorption of both axial and radial forces.
- the hydraulic medium can be introduced into the housing bidirectionally, which makes it possible to pivot a flap hinged to the housing in different directions.
- the pivoting drive according to the invention is used in particular for flap deflection on rotor blades or aircraft wings. It is particularly advantageous to integrate the drive in a hinge connection of a hinged to an aerodynamic profile flap, wherein a plurality of such drives is linearly integrated into the hinge connection.
- FIG. 1 is a schematic three-dimensional representation of the pivot drive according to the invention
- Fig. 2 is a sectional view of the pivot drive according to the invention.
- FIG. 3 is a cross-sectional view of the piston used in the rotary actuator according to the invention.
- Fig. 4 a plurality, linienf 'RMIG arranged rotary actuators that are integrated into a joint of an articulated to an aerodynamic profile flap.
- Fig. 1 shows a three-dimensional view of a linienformigen invention, hydraulic rotary actuator 1 for converting an axial movement in a rotary motion.
- the drive comprises a housing 2 having two ports 3, 4 for a hydraulic medium (e.g., a fluid). Inside the housing 2, a piston 5 and an output shaft 6 connected to the piston 5 are arranged. For better illustration, the housing 2 and the piston 5 in Fig. 1 is partially shown in sectioned view. In the symmetrical piston 5, the output shaft 6 is inserted on both sides. To introduce and maintain the hydraulic medium (e.g., a fluid).
- a hydraulic medium e.g., a fluid
- the output shaft 6 is preferably at least two separate sections 6a, 6b.
- the respectively engaging in the piston 5 ends of the output shaft sections 6a, 6b are provided with co-rotating coarse threads 8a, 8b.
- coarse thread 8a, 8b ensures that the direction of rotation of the two output shaft sections 6a, 6b is identical, which will be described in more detail below.
- the piston 5 is correspondingly provided on both sides with threads 5 a, 5 b, in order to ensure the engagement of the drive shaft sections 6 a, 6 b in the piston 5.
- the threads 5a, 5b are designed in the form of threaded bushes.
- the two output shaft sections 6a, 6b are rotationally symmetrical with one another via a spacer pin 7 (FIG. 2).
- the Piston 5 is provided with a central bore 10 in which the spacer pin 7, preferably using a sealing ring 11, superimposed.
- the spacer pin 7 is inserted into corresponding bores 9a, 9b introduced into the output shaft sections 6a, 6b.
- a bias of the spacer pin 7 can be achieved by suitable elastic elements 16 (eg, rubbers or the like), which are also inserted into the holes 9a, 9b. In this way, a rotationally symmetrical axle package, which essentially consists of output shaft sections 6a, 6b and spacer pin 7, is produced.
- suitable elastic elements 16 eg, rubbers or the like
- the mounting of the axle pack within the housing 2 must absorb part of the force generated axially by the piston 5.
- the output shaft 6 must be guided in the radial direction. This is done by axial-radial bearings, which are shown in Figs. 1 and 2 are designated by reference numerals 12 and 13.
- the axial or radial components of the bearings may be formed separately.
- rolling bearings are used.
- the bearings 12, 13 are typically integrated in the housing cover 14, 15, which close the housing 2 on both sides tight. The dimensions of the individual components are coordinated so that the axle pack is axially biased by the housing cover 14, 15 in conjunction with the elastic member 16.
- the cross section of the piston 5 has a polygonal profile, which is preferably a P4C profile according to DIN standard 32712.
- the polygon profile extends substantially over the cross-sectional area provided with the threads 5a, 5b; ie the polygon profile is arranged substantially where the coarse thread 8a, 8b of the output shaft 6 engage in the piston 5.
- the term "engagement area" is used for this purpose.
- the polygonal profile may extend over the entire length of the piston 5.
- a sectional view of the piston 5 along the line D, D 'shown in FIG. 2 is shown in FIG.
- Such a polygon profile allows on the one hand enough power is transmitted to the output shaft. On the other hand, this ensures a so-called "slippage" of the output shaft 6, which in turn prevents rotation of the piston 5.
- Fig. 4 shows an application of the pivoting drive according to the invention for the deflection of a so-called mini flap.
- the rear end of an aerodynamic profile 20 is shown schematically.
- a flap 22 is articulated via a hinged connection 23.
- the pivot axis 24 of the articulated connection 23 extends parallel to the trailing edge 25 of the profile.
- a plurality of pivot drives 1 according to the invention are arranged linearly or in a bar shape.
- the terminals 3, 4 of the individual part-turn actuators 1 are preferably supplied in parallel.
- the inlet of the hydraulic Medium is again bidirectional, depending on the desired pivoting direction.
- the operating forces are introduced surface and not as previously selectively.
- the "broom handle assembly" shown in Fig. 4 can be integrated into the hinge joint 23.
- Such integrated, rotationally symmetrical actuator systems have already been produced with diameters of less than 28 mm.
- the diameter of the pivot drive is not more than 20 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10207830A DE10207830B4 (en) | 2002-02-25 | 2002-02-25 | Linear hydraulic swivel drive |
DE10207830 | 2002-02-25 | ||
PCT/DE2003/000541 WO2003072955A1 (en) | 2002-02-25 | 2003-02-21 | Linear, hydraulic pivot drive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1488111A1 true EP1488111A1 (en) | 2004-12-22 |
EP1488111B1 EP1488111B1 (en) | 2005-12-07 |
Family
ID=27740373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03718601A Expired - Fee Related EP1488111B1 (en) | 2002-02-25 | 2003-02-21 | Linear, hydraulic pivot drive |
Country Status (7)
Country | Link |
---|---|
US (1) | US7028602B2 (en) |
EP (1) | EP1488111B1 (en) |
JP (1) | JP4227527B2 (en) |
CA (1) | CA2476903C (en) |
DE (2) | DE10207830B4 (en) |
ES (1) | ES2251683T3 (en) |
WO (1) | WO2003072955A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005033697A1 (en) * | 2005-07-19 | 2007-03-22 | Airbus Deutschland Gmbh | Control surface e.g. rudder, operating mechanism for airplane, has gearing placed downstream of hydraulic motor so that drive shaft of motor drives input shaft of gearing, and output shaft coincides with rotational axis of rudder |
DE202006016354U1 (en) * | 2006-10-23 | 2008-02-28 | Asturia Automotive Systems Ag | Device for compensation and / or transmission of forces / moments and rotational movements between two components |
FI120917B (en) | 2008-02-08 | 2010-04-30 | Kinshofer Gmbh | Hydraulically operated swivel |
EP2703288B1 (en) | 2012-08-31 | 2018-03-14 | Claverham Limited | Electromechanical linear actuator for in blade rotor control |
KR101637037B1 (en) * | 2014-12-22 | 2016-07-07 | 김선규 | Hydraulic cylinder |
CN106151152A (en) * | 2015-03-12 | 2016-11-23 | 盐城工业职业技术学院 | Four station double acting hydraulic cylinders |
JP6780819B2 (en) * | 2017-10-03 | 2020-11-04 | Smc株式会社 | A rotating unit and a cylinder device provided with the rotating unit |
KR102124335B1 (en) * | 2018-09-06 | 2020-06-19 | 주식회사 포스코 | Separating apparatus and separating method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE26813C (en) * | C. WETTER in London | Innovation in electromagnets and magnetic cores for dynamo-electric machines and similar devices | ||
DE1024804B (en) * | 1956-09-18 | 1958-02-20 | Ernst Heinkel Fahrzeugbau G M | Hydraulic flap drive, especially for aircraft |
DD26813A1 (en) * | 1962-04-16 | 1964-01-27 | Hydraulic angle motor | |
US4603616A (en) * | 1983-05-25 | 1986-08-05 | Zaytran Inc. | Rotary actuator |
GB2299562A (en) * | 1995-04-01 | 1996-10-09 | Nigel Howard Mckrill | Actuator for helicopter rotor blade aileron |
DE19628117C2 (en) * | 1996-07-12 | 1998-05-14 | Walter Voss Gmbh Armaturenfabr | Rotary drive, in particular swivel motor |
DE10156733B4 (en) | 2001-11-19 | 2006-04-20 | Eads Deutschland Gmbh | Aerodynamic profile with adjustable flap |
-
2002
- 2002-02-25 DE DE10207830A patent/DE10207830B4/en not_active Expired - Fee Related
-
2003
- 2003-02-21 WO PCT/DE2003/000541 patent/WO2003072955A1/en active IP Right Grant
- 2003-02-21 EP EP03718601A patent/EP1488111B1/en not_active Expired - Fee Related
- 2003-02-21 DE DE50301861T patent/DE50301861D1/en not_active Expired - Lifetime
- 2003-02-21 ES ES03718601T patent/ES2251683T3/en not_active Expired - Lifetime
- 2003-02-21 US US10/505,678 patent/US7028602B2/en not_active Expired - Fee Related
- 2003-02-21 JP JP2003571610A patent/JP4227527B2/en not_active Expired - Fee Related
- 2003-02-21 CA CA2476903A patent/CA2476903C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03072955A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10207830B4 (en) | 2004-07-01 |
US20050178927A1 (en) | 2005-08-18 |
WO2003072955A1 (en) | 2003-09-04 |
US7028602B2 (en) | 2006-04-18 |
DE10207830A1 (en) | 2003-09-11 |
EP1488111B1 (en) | 2005-12-07 |
JP4227527B2 (en) | 2009-02-18 |
ES2251683T3 (en) | 2006-05-01 |
DE50301861D1 (en) | 2006-01-12 |
CA2476903C (en) | 2010-11-23 |
JP2005525516A (en) | 2005-08-25 |
CA2476903A1 (en) | 2003-09-04 |
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