WO2017190875A1 - Appareil de levage pour un aéronef - Google Patents

Appareil de levage pour un aéronef Download PDF

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Publication number
WO2017190875A1
WO2017190875A1 PCT/EP2017/055319 EP2017055319W WO2017190875A1 WO 2017190875 A1 WO2017190875 A1 WO 2017190875A1 EP 2017055319 W EP2017055319 W EP 2017055319W WO 2017190875 A1 WO2017190875 A1 WO 2017190875A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston tube
extension piece
hydraulic
lifting device
piston
Prior art date
Application number
PCT/EP2017/055319
Other languages
German (de)
English (en)
Inventor
Andreas Wolk
Simon Lindenlaub
Ulrich Ockenfuss
Original Assignee
Hydro Systems Kg
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 Hydro Systems Kg filed Critical Hydro Systems Kg
Publication of WO2017190875A1 publication Critical patent/WO2017190875A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/40—Maintaining or repairing aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/36—Load-engaging elements
    • B66F3/38—Load-engaging elements adjustable relative to piston

Definitions

  • the invention relates to a lifting device for an aircraft.
  • the lifting device comprises a foot structure and arranged on the foot structure ⁇ hydraulic jack.
  • the hydraulic lifter includes a hydraulic cylinder and a hydraulic piston. At an upper end of the hydraulic jack, a support means for the aircraft is formed.
  • Aircraft can be lifted off the ground.
  • the force required to lift the aircraft is applied by several (usually three) hydraulic lifters.
  • Supporting devices of the lifting devices are brought into engagement with suitable attack points of the aircraft.
  • the hydrau ⁇ metallic jacks are operated so that the hydraulic pistons are synchronously moved out of the hydraulic cylinders and the aircraft is raised.
  • the lifting distances of the hydraulic lifters are dimensioned so that the landing gear can be lifted off the ground, which makes it possible to retract the landing gear.
  • Different types of aircraft have different under heights (distance from the point of attack to the ground) and must be raised to different heights. If a lifting device for a plurality of flight are used ⁇ tools, its minimum height is (piston Rod in the hydraulic cylinder retracted) to be sized so that it can still be positioned under the lowest aircraft.
  • the invention has for its object to provide a cost-effective hydraulic lifting device, which is suitable for lifting different types of aircraft. Based on the cited prior art, the object is achieved with the features of claim 1. Advantageous embodiments are specified in the subclaims.
  • the hydraulic piston is designed as a piston tube, wherein in the interior of the piston tube, an extension piece is received, which can be brought relative to the piston tube in a first fixed longitudinal position and in a second fixed Lekssposi ⁇ tion.
  • Fixed longitudinal position means that the extension piece is not displaced relative to the piston tube, even if a force acts in the longitudinal direction of the extension piece.
  • the longitudinal direction refers to the direction of movement of the hydraulic lifter.
  • the longitudinal direction is regularly aligned vertically. In the lifting device according to the invention can in a first
  • Step the extension piece are placed in such a longitudinal position relative to the piston tube, that on the one hand, the structure of the aircraft still underrun and the lifting device can be easily positioned and aligned under the point of attack of the aircraft and that on the other hand, the Ab ⁇ stand of the support device of the lifting device to the point of the aircraft is dimensioned so that the aircraft lifted by the subsequent hydraulic expulsion of the single-stage hydra ⁇ likkolbens from the hydraulic cylinder to a sufficient extent can be.
  • the piston tube is usually in the lowest (retracted) position or a slightly extended position at this time, so that the full stroke of the hydraulic lift for lifting the aircraft is available.
  • the invention thus proposes a two-stage operation of the lifting device.
  • a first step the constrainti- on the support means is adjusted by the extension ⁇ piece is brought into a suitable longitudinal position relative to the piston tube.
  • no large forces act ⁇ te on the lifter so that a relatively simple and therefore cost-effective mechanism is sufficient.
  • the second step the height position of the support is changed to dock at the point of attack of the aircraft.
  • the aircraft can either be raised or held in the relevant position. This is done with the help of the more elaborate hydraulic system, which can apply the required forces.
  • the hydraulic stroke path is essentially completely available in the phase in which large forces act.
  • Piston tube refers to an element having an upwardly open pipe section. At its lower end, the piston tube is preferably closed, so that the piston tube can act as a hydraulic piston. The longer the pipe section of the piston tube, the larger the Adjustment range in which the extension piece can be positioned relative to the piston tube.
  • the pipe section extends over at least 50-6, preferably at least 70%, more preferably at least 90% of the length of the piston tube.
  • the support means of the lifting device is preferably arranged at an upper end of the extension piece.
  • the Stützein ⁇ direction may be disposed near the upper end of the barrel when the extension piece in the retracted position in the piston tube.
  • the lower end of the exten ⁇ approximately piece is in the retracted position, preferably near the lower end of the pipe section of the barrel.
  • the distance between the first fixed longitudinal position and the second fixed longitudinal position of the extension piece ent ⁇ speaks preferably the maximum adjustment, which is available between the extension piece and the piston tube.
  • a large displacement of the extension piece is advantageous.
  • the displacement preferably corresponds Minim ⁇ least 50%, more preferably at least 70%, more preferably at least 90% before ⁇ the path of the hydraulic jack.
  • the stroke is the distance between the two most distant positions of the hydraulic piston relative to the hydraulic cylinder, which the hydraulic jack permits.
  • the adjustment can extend over at least 50 ⁇ 6, white ter preferably at least 70%, more preferably Minim ⁇ least 90% of the length of the barrel.
  • the adjustment path of the extension piece can be For example, lie between 1 m and 3 m.
  • the hydraulic stroke can be between 1 m and 3 m.
  • the foot structure may comprise three feet.
  • the feet may be arranged so that they span an equilateral triangle, in the center of which the hydraulic jack is arranged.
  • at least one strut is preferably arranged.
  • an essentially horizontal strut of a lower end of the hydraulic jack and an inclined strut of a obe ⁇ ren end of the hydraulic jack is extended to each of the three feet.
  • One or more of the feet may have a height adjustment. The height adjustments can be used to align the lifter. If all feet are equipped with a height adjustment, a fine adjustment of the height position of the hydraulic lifter is also possible.
  • the first longitudinal position and the second longitudinal position entspre ⁇ chen preferably the uppermost position and the lowermost position, which can occupy relative to the piston tube, the extension piece.
  • the lifting device allows a continuous adjustment between the first longitudinal position and the second longitudinal position.
  • the extension piece can be accommodated in a sliding guide of the piston tube.
  • an external device such as a crane or forklift may be provided.
  • the extension piece may be provided with connecting means to which the external device may engage.
  • the connection device may be, for example, an eyelet or the like.
  • the extension piece can be fixed via a fixing element relative to the piston tube.
  • the fixing element may for example be formed as a bolt which is inserted through a transverse bore in the extension piece and the piston tube.
  • the extension piece is then in a fixed longitudinal position relative to the piston tube so that the position remains unchanged when a force acts longitudinally on the extension piece.
  • the extension piece and / or the piston tube are preferably arranged so that the extension piece can be fastened with the fixing element in different longitudinal positions.
  • the extension piece and / or the piston tube for this purpose may have transverse bores at different heights.
  • a thread guide between the extension piece and the piston tube comprises a threaded member connected to the piston tube and a threaded member connected to the extension piece.
  • the thread guide is preferably formed such that it is stable to acting in the longitudinal Rich ⁇ tung forces. This means that the longitudinal position between the extension piece and the piston tube is maintained even when a force acts in the longitudinal direction on the extension piece.
  • the lifter is designed such that the delay ⁇ Longer side piece can be continuously positioned rela tive to the piston ⁇ pipe inside the displacement path.
  • the thread guide comprises a first Ge ⁇ threaded element, which is firmly connected with the extension piece, and a second threaded member, which is rotatably mounted relative to the piston tube.
  • the first threaded element may be formed as an external thread
  • the second threaded element as an internal thread.
  • the second threaded element is preferably arranged in a fixed longitudinal position relative to the piston tube.
  • the extension piece is preferably rotatably re ⁇ relative to the piston tube mounted.
  • the second threaded element may be formed, for example, as a handwheel on which an operator can attack from the outside. By turning on the second threaded member, the extension piece is raised or lowered relative to the piston tube.
  • a motor drive for the second threaded element may be provided.
  • the motor drive can be a part of the lifting device according to the invention.
  • Mög ⁇ Lich is also the use of a mobile drive, for example in the form of an impact wrench or Akkuschrau- bers, which is connected via a suitable connection only when needed with the lifting device.
  • the extension piece By actuating the motor drive, the extension piece can be raised or lowered relative to the piston tube.
  • the second threaded member is rotatably connected to the piston tube, while the extension piece is rotatable relative to the piston tube.
  • the encryption extention piece By turning the encryption extention piece to the piston tube, the exten ⁇ extension piece can be raised or lowered relative to bring it to the desired longitudinal position.
  • the motor drive by which the extension piece is rotated relative to the piston tube.
  • the motor drive preferably comprises a first element which is non-rotatably connected to the piston ⁇ tube and a second element which is rotatably connected to the extension piece. At least one of the two elements should be slidably mounted on the piston tube or the extension piece in the longitudinal direction.
  • the guide between the extension piece and the piston tube comprises a longitudinal toothing and a spur gear.
  • the spline may be disposed on the extension piece while the spur gear is connected in a fixed position with the piston tube and is rotatably supported relative to the piston tube.
  • the spur gear meshing with the spline is rotated, the extender is raised or lowered relative to the piston tube.
  • a manual drive may be provided, for example, can be a crank umfas ⁇ sen.
  • a motor drive is possible.
  • the motor drive can be part of the lifting device. It is also possible to use a mobile drive, which is connected to the spur gear only when required via a suitable connection.
  • the dimensions of the lifting device are adapted to the application.
  • the smallest height expansion has the lifting device in the retracted state. This height can be between 1 m and 3 m, preferably between 1.5 m and 2.0 m.
  • the largest height expansion has the lifting device in the extended state. In the extended state, both the exten ⁇ extension piece and the piston tube are raised to their highest position. In this state, the lifter may have a fatiguenaus ⁇ stretching between 4 m and 7 m.
  • FIG. 1 shows a perspective view of a lifting device according to the invention
  • FIG. 2 shows a sectional view of the lifting device according to FIG.
  • FIG. 3 shows the lifting device according to FIG. 1 in another state
  • FIG. 4 shows the lifting device according to FIG. 3 in a sectional illustration ;
  • FIG. 5 shows an alternative embodiment of a lifting device according to Inventive ⁇
  • FIG. 6 shows the lifting device according to FIG. 5 in a sectional illustration
  • FIG. 7 shows an alternative embodiment of a lifting device according to Inventive ⁇ .
  • FIGS. 8 and 9 show further alternative embodiments of lifting devices according to the invention.
  • FIG. 1 lifter for an aircraft is with three feet 14, 15, 16 on the ground.
  • the feet 14, 15, 16 form together the foot structure of the lifting device.
  • an hydrauli ⁇ shear lifter 18 is connected via a respective horizontal brace 19 and a strut 20 disposed inclined to each of the feet 14, 15, 16, so that the hydraulic lifter 18 essen- sentlichen vertically oriented.
  • a fine adjustment of the orientation of the hydraulic jack 18 is made possible by a height adjustment 21, with which each of the feet 14, 15, 16 is equipped.
  • the orientation of the hydraulic lifter 18 is changed. Simultaneous operation of the height adjustments 21 allows for fine adjustment of the height position of the hydraulic lifter 18.
  • the lifter also includes a step 22 to which an operator can position himself to reach the upper portion of the lifter.
  • the hydraulic jack 18 comprises a hydraulic cylinder 23 and a hydraulic piston 24.
  • FIG. 2 shows the hydraulic piston 24 in the lowermost, retracted position, in which the hydraulic piston 24 is substantially completely inside the hydraulic cylinder 23 is included.
  • the hydraulic piston 24 can be extended upward out of the hydraulic cylinder 23.
  • the hydraulic piston 24 is designed as a piston tube, which means that the upper portion of the hydraulic piston 24 is formed as an upwardly open pipe section.
  • an extension piece 25 which has a smooth outer wall, is introduced from above into the piston tube 24.
  • the upper end of the extension piece 25 is formed as a supporting means 26, with which can be attacked at a geeig ⁇ Neten point of attack of an aircraft, to raise the plane. The lifting of the aircraft is effected by operating the hydraulic jack.
  • the extension piece 25 is moved in the longitudinal direction of the hydraulic jack 18 up or down to bring it into a proper longitudinal position relative to the piston tube 24.
  • the raising or lowering of the extension piece 25 is carried out by an external device, such as a forklift or a crane, which is attacked on a pull-out aid 27 in the form of an eyelet.
  • the extension piece is brought into the correct longitudinal position, it is secured with a locking pin 28 which is guided through a transverse bore in the piston tube 24 and the extension piece 25 therethrough.
  • the extension piece 25 is then in a fixed longitudinal position relative to the piston tube 24.
  • a thread guide is provided between the extension piece 25 and the piston tube 24.
  • the extension piece 25 is provided with an external thread 30.
  • a handwheel 29 having a female thread matching the male thread is rotatably supported relative to the piston tube 24 in a fixed longitudinal position. By manually turning on the hand wheel 29, the extension piece 24 is brought into the desired longitudinal position relative to the piston tube 24.
  • the thread guide is designed so that the extension piece 24 is held firmly in this longitudinal position.
  • a thread guide is likewise formed between the extension piece 25 and the piston tube 24. The difference to Fig. 5 is that the thread guide is not operated manually, but by motor.
  • the lifting device comprises a radial drive 31, for example in the form of an electric, hydraulic or air ⁇ engine, which is fixedly connected to a torque arm 32.
  • a radial drive 31 for example in the form of an electric, hydraulic or air ⁇ engine, which is fixedly connected to a torque arm 32.
  • a thread guide is also provided between the extension piece 25 and the piston tube 24.
  • the extension piece 25 is acted upon by a tensioning device 33.
  • the tensioning device 33 comprises a drive roller 34, which can be set in rotation with a mobile drive 35, for example in the form of a striking screwdriver 35. By operating the mobile actuator 35, the exten ⁇ extension piece 25 can be moved to the desired longitudinal position relative to the piston tube 24th
  • the guide between the extension piece 25 and the piston tube comprises a longitudinal toothing 36 formed on the extension piece 25.
  • the longitudinal toothing 36 is in engagement with a spur gear 37 which is arranged in a fixed position relative to the piston tube 24 , With a hand crank 38, the spur gear 37 can be rotated. This permits raising or lowering of the extension piece in the ge ⁇ desired longitudinal position relative to the piston tube 24th

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Transportation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Actuator (AREA)

Abstract

L'invention concerne un appareil de levage pour un aéronef. L'appareil de levage comporte une structure de base (14, 15, 16) et un dispositif de levage hydraulique (18) disposé sur la structure de base (14, 15, 16). Le dispositif de levage hydraulique (18) comporte un cylindre hydraulique (23) et un piston hydraulique (24). Un dispositif de support (26) pour l'aéronef est réalisé à une extrémité supérieure du cylindre hydraulique (18). Selon l'invention, le piston hydraulique (24) est réalisé sous forme de tube-piston (24) et une pièce de prolongement (25) est reçue à l'intérieur du tube-piston (24), laquelle peut être amenée à une première position longitudinale fixe et à une deuxième position longitudinale fixe par rapport au tube-piston (24). Puisque la pièce de prolongement (25) peut coulisser par rapport au tube-piston (24), la position en hauteur du dispositif de support (26) est réglée de manière flexible, de sorte que l'appareil de levage peut être utilisé pour différents types d'aéronefs.
PCT/EP2017/055319 2016-05-02 2017-03-07 Appareil de levage pour un aéronef WO2017190875A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207529.2A DE102016207529A1 (de) 2016-05-02 2016-05-02 Hebegerät für ein Flugzeug
DE102016207529.2 2016-05-02

Publications (1)

Publication Number Publication Date
WO2017190875A1 true WO2017190875A1 (fr) 2017-11-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/055319 WO2017190875A1 (fr) 2016-05-02 2017-03-07 Appareil de levage pour un aéronef

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DE (1) DE102016207529A1 (fr)
WO (1) WO2017190875A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020222674A1 (fr) * 2019-11-29 2020-11-05 Владимир Петрович СЕВАСТЬЯНОВ Système d'entretien technique d'avion avec installation nucléaire

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113213367A (zh) * 2021-03-31 2021-08-06 成都飞机工业（集团）有限责任公司 一种适用于大型产品的柔性托举装置以及托举方法

Citations (5)

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Publication number Priority date Publication date Assignee Title
US2240724A (en) * 1940-05-29 1941-05-06 Weaver Mfg Co Airplane jack and supporting system
US2819873A (en) * 1953-08-17 1958-01-14 Regent Jack Mfg Co Load handling apparatus
US7143998B1 (en) * 2003-09-12 2006-12-05 The United States Of America As Represented By The Secrectary Of The Navy Vibration absorber jack
US20120180283A1 (en) * 2011-01-19 2012-07-19 Matrix Service, Inc. Mobile jack for a storage tank floating roof
US20130299760A1 (en) * 2012-05-11 2013-11-14 Tronair Inc. Aircraft Jack

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE7311161U (de) * 1973-08-23 Schaefer W Wagenheber
GB926254A (en) * 1960-09-06 1963-05-15 Douglas Aircraft Co Inc Air glided load support
FR2225375B1 (fr) * 1973-04-13 1976-09-10 Schulz Zoller Gunter
DE2754016C3 (de) * 1977-12-05 1981-11-19 Walter Mayer Fördertechnik GmbH, 7527 Kraichtal Hydraulischer Teleskop-Hubzylinder
FR2491048A1 (fr) * 1980-09-30 1982-04-02 Sovam Installation de levage d'une charge de grande dimension a l'aide de plusieurs dispositifs de levage independants agissant en plusieurs points de charge, notamment destinee au levage d'un avion en vue de sa reparation
DE3713007A1 (de) * 1987-04-16 1988-10-27 Hydro Geraetebau Gmbh & Co Kg Einrichtung zum hochbocken von flugzeugen
EP0569914A1 (fr) * 1992-05-14 1993-11-18 GRESCHBACH INDUSTRIE GmbH & CO KG Dispositif pour soulever un avion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240724A (en) * 1940-05-29 1941-05-06 Weaver Mfg Co Airplane jack and supporting system
US2819873A (en) * 1953-08-17 1958-01-14 Regent Jack Mfg Co Load handling apparatus
US7143998B1 (en) * 2003-09-12 2006-12-05 The United States Of America As Represented By The Secrectary Of The Navy Vibration absorber jack
US20120180283A1 (en) * 2011-01-19 2012-07-19 Matrix Service, Inc. Mobile jack for a storage tank floating roof
US20130299760A1 (en) * 2012-05-11 2013-11-14 Tronair Inc. Aircraft Jack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020222674A1 (fr) * 2019-11-29 2020-11-05 Владимир Петрович СЕВАСТЬЯНОВ Système d'entretien technique d'avion avec installation nucléaire

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