• 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:
    Installation (1) for retaining an aerostat (100) which comprises a platform (2) rotatably mounted about a vertical axis (Z), a boom (5) extending horizontally from the platform, and a pulley (6) for guiding a cable (4) which holds the aerostat. The installation (1) further comprises a pulley support (7) movable relative to the boom, and an elastic member (9) which connects said pulley support to the boom.
    公开号:FR3021032A1
    申请号:FR1454239
    申请日:2014-05-13
    公开日:2015-11-20
    发明作者:Baptiste Regas；Adrien Regas；Olivier Jozan；Guillaume Desrocques
    申请人:A Nte Aero Nautic Technology & Engineering；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD The present invention relates to an installation for retaining an aerostat. STATE OF THE PRIOR ART More particularly, the invention relates to an installation for retaining an aerostat comprising: a platform rotatably mounted around a vertical axis, said platform comprising a winch for winding and unrolling a cable to which said aerostat is attached, a boom which extends horizontally from the platform, and a pulley adapted to guide the cable coming from the winch. Such an installation holds the aerostat at a distance from the ground and naturally moves in the direction of the wind Installations of this type are known. Document US 4,421,286 describes such an installation whose boom is telescopic to adapt to aerostats of different sizes. SUMMARY OF THE INVENTION The present invention aims to improve facilities of this type, in particular to better adapt to the wind. For this purpose, an installation of the aforementioned type is characterized in that it further comprises: - a pulley support for supporting the pulley, said pulley support being movable relative to the boom, and 35 - an elastic member which connects said pulley support to the boom.
    [0002] Thanks to these provisions, the tension of the cable after the pulley and towards the aerostat, generated by the force of the wind, naturally moves the pulley support. The moment or transverse torque applied to the platform by the wind (or any other external action on the aerostat or the installation) is then reduced. The size of the boom, the pivot connection between the platform and a support can thus be reduced. More generally, the size and cost of the installation can be reduced.
    [0003] In addition, voltage variations and / or cable length can be absorbed. These variations are penalizing for the installation (the pivot connection, the winch), but also for the aerostat. In addition, the installation is a mechanical system that does not consume energy and is very reliable. In various embodiments of the installation according to the invention, one may optionally also resort to one and / or the other of the following provisions. According to one aspect of the invention, the installation 20 further comprises a compensating assembly to compensate for variations in voltage or cable length. According to one aspect of the invention, the compensation assembly is integrated in the pulley support. According to one aspect of the invention, the compensation assembly comprises a compensating pulley mounted movably and which is biased by a return spring, and the cable passes successively through the pulleys for storing a length of cable. According to one aspect of the invention, the compensation assembly comprises at least two movably mounted compensating pulleys which are each biased by a return spring which moves them away from each other with respect to a middle position of said Compensation pulleys, and the cable passes successively through the pulleys to store a length of cable.
    [0004] According to one aspect of the invention, the installation further comprises at least one stop to limit a permissible displacement of the pulley support relative to the boom.
    [0005] According to one aspect of the invention, the stop is adjustable to modify the permissible displacement of the pulley support. According to one aspect of the invention, the pulley support is connected to the boom by a sliding connection for sliding along the boom, and the resilient member urges the pulley support towards one end of the boom opposite the the platform. According to one aspect of the invention, the pulley support is secured to an arm pivotally mounted relative to the boom, and the resilient member urges the arm toward the boom. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will become apparent from the following description of two embodiments, given by way of non-limiting examples, with reference to the accompanying drawings. In the drawings: FIG. 1 is a side view of an installation according to a first embodiment of the invention; - Figure 2 is a top view of the installation of Figure 1; Figure 3 is a side view of an installation according to a second embodiment of the invention; and - Figure 4 is a schematic view of a pulley carrier including a compensation assembly. In the various figures, the same numerical references denote identical or similar elements.
    [0006] DETAILED DESCRIPTION OF EMBODIMENTS In the present description, the terms "upper" or "upward" and "lower" or "downward" are used relative to the vertical direction Z, upwards, perpendicular to the longitudinal direction X and transverse direction Y. FIG. 1 shows an installation 1 for retaining an aerostat 100. The aerostat 100 is a tethered balloon or an airship which is connected to the installation to hold it in a stationary position or near-stationary and at a predetermined altitude above the ground, or to bring it near the ground just above the installation. The term aerostat denotes a balloon 15 comprising an envelope 101 which contains a gas less dense than air, and possibly a nacelle 102 for loading equipment or passengers. The landing of the aerostat 100 is done by means of at least one cable 4 which connects the aerostat (its nacelle 102) 20 to a support 11 (ground or any other support). The installation 1 comprises, as is known, - a platform 2 rotatably mounted about a vertical axis Z, by a pivot connection 10 between the platform 2 and a support 11, 25 - a boom 5 which extends substantially horizontally from the platform 2 in a longitudinal direction X, and - a pulley 6 adapted to guide the cable 4 and deflect it from said longitudinal direction to direct it to the aerostat 100. Indeed, the cable 4 comprises a first strand 42 between the platform 2 and the pulley 6 of direction substantially identical to that of the boom 5, and a second strand 42 between the pulley 6 and the balloon 100 of direction 35 inclined relative to the longitudinal direction X, this direction making an angle a with the longitudinal direction X. The support 11 is for example the floor or any other intermediate means, such as a rolling or non-rolling vehicle adapted to support the installation and itself possibly anchored to the ground. For example, the vehicle can be a pickup, a truck, a boat, a ship. The platform 2 comprising a winch 3 for winding and unrolling the cable 4 at the end of which is attached the aerostat 100.
    [0007] The cable 4 extends from the winch 3 to the pulley 6 situated at a point P distant from the vertical axis Z, and up to the aerostat 100. The point P is at a distance L from this vertical axis Z The support 11 and the aerostat 100 may undergo uncontrolled external forces and / or movements (wind, waves, etc.). The combination of these forces and / or movements generate a tension T in the connecting cable between the installation 1 and the aerostat 100. In the remainder of the present description, we consider for simplification explanations only the case of a action of the wind V. A wind V applies a force on the envelope 101 of the aerostat which causes a tensile tension T in the cable 4. A change of direction of the wind V in a horizontal plane XY causes a moment or vertical torque Mz on the distance-proportional platform 2 L and a tangential component Tt of the voltage T. Said tangential component is a component of the voltage T which is tangent to the horizontal circle passing through the point P in said horizontal plane (see FIG. considering fixed pulley support 7). Thus, the vertical moment Mz is equal to: Mz = L.Tt = LTcos (a) .sin (y) where a is the angle (elevation angle) that the cable 4 has with respect to the horizontal plane XY, y is the lateral angle made by the cable 4 with respect to the vertical plane XZ, the direction X being the direction of the boom 5, T is the tension of the cable, and L is the distance between the vertical axis Z is the pulley 6 (in the horizontal plane XY). This vertical moment Mz causes rotation of the platform 2 with respect to the ground around the vertical axis Z, until the alignment of the boom 5 in the direction (in a horizontal plane) of the aerostat 100. The boom 5 is thus naturally oriented in the direction of the aerostat. As soon as the boom is correctly oriented, this vertical moment Mz becomes zero because the lateral angle becomes zero (y = 0).
    [0008] The tension T also causes a moment or transverse torque My on the platform 2 which tends to tilt around the transverse axis of rotation Y. The pivot connection 10 which supports the platform 2 must be dimensioned to withstand extreme tension T , corresponding to a maximum of admissible wind. Thus, with the same notations as before, the transverse momentum My is equal to: My = L.Tz = LTsin (a) .cos (y), Tz being the vertical component of the voltage T (projection on the direction of vertical axis Z). For simplicity, it will be assumed later that the boom 5 is oriented towards the balloon 100, and therefore: cos (y) = 1. Usually, a second cable connects the nose 103 of the balloon 100 to the installation 1 In this case, the installation 1 also comprises a mast which extends vertically upwards from the platform 2 to guide a second point to said second cable and moor the nose 103 of the aerostat at the upper end. said mast. The aerostat in the landing position is then retained by the two cables, at two points: at its nose and the nacelle. The height of the mast and the length of the boom are sometimes adjustable to accommodate different sizes of aerostat, as described in US 4,421,286.
    [0009] The installation 1 of the present invention improves the known installations. As shown in the figures, it further comprises: - a pulley support 7 adapted to support the pulley, said pulley support 7 being movable relative to the boom 5, and an elastic member 9 which connects said pulley With these arrangements, the pulley support 7 can move, but it is returned to an equilibrium position by the elastic member 9. The pulley support 7 is, for example, a pulley support 7. clevis or U-shaped piece comprising a shaft on which the pulley 6 is rotatably mounted. The elastic member 9 is for example a spring 20 whose one end is integral with the pulley support 7 and a second end 5a is integral with the boom 5. This elastic member 9 is adapted to exert a restoring force on the support of pulley 9 and to give it a position of equilibrium according to the tension T 25 experienced by the cable 4. The spring can be of any type, linear or not, with a damping component or without. This spring is for example a helical spring, a leaf spring, a metal spring or elastomer or any other material. Optionally, the resilient member 9 may further comprise a spring, a damper mounted in parallel with said spring; this damper being a separate element and separated from the spring. The damper can be of any type, linear or non-linear, and for example a hydraulic, pneumatic, or other damper. Optionally, the elastic member 9 can be constructed with a magnetic or electrical system, controlled or not, the control giving equivalence the stiffness characteristic of the spring and possibly the damping characteristic of the damper.
    [0010] According to a first embodiment of the invention presented in FIGS. 1 and 2, the pulley support 7 is connected to the boom 5 by a sliding connection 8. The pulley support 7 slides on the boom in the horizontal direction X so that the distance L between the vertical axis Z and the point P (axis of rotation of the pulley 6) is modifiable and simply changes as a function of the tension T of the cable 4. The elastic member 9 connects said pulley support 7 to the boom 5, and for example urges the pulley support 7 to an end 5a of the boom located opposite the platform 2. In such a case, the equilibrium equations of the pulley support 7 (forces and moments) make it possible to determine the transverse moment My, and we obtain: My = Lo.sin (a) .1 - (1-cos (a)). sin (a) /k.T2 where Lo is the distance of balance of the pulley 6 on the boom 5, and 25 k is the stiffness of the elastic member (in N / m). The first term (Lo.sin (a)) is equivalent to the expression previously obtained, the pulley 6 not being displaceable. The second term ((1-cos (a)) sin (a) /k.T2) is deduced from the first term. If the stiffness k of the elastic member 9 is very large, this second term becomes negligible. The transverse moment My can therefore be reduced by this second term. The transverse moment My, for a voltage value T, is canceled for the optimum stiffness value ko: ko = (1-cos (a)) T / L0 Therefore, thanks to the elements of the installation 1 according to the invention, the platform 2 undergoes reduced efforts (moments). In addition, the variations of these efforts can also be reduced and amortized. Platform 2 thus undergoes less static effort and less dynamic effort.
    [0011] According to a second embodiment of the invention presented in FIG. 3, the pulley support 7 is integral with an arm 12 which extends from a hinge 12 (pivot connection) located near the platform 2 or on the platform 2. The arm 13 and the pulley support 7 are thus able to pivot about the hinge 11. The elastic member 9 connects the pulley support 7 or the arm 13 to the boom 5, and urges the arm in rotation 12 and the pulley support 7 towards the boom 5.
    [0012] In this embodiment, the rotation of the arm 12 also changes the distance L between the vertical axis Z and the pulley 6. The installation 1 of this second embodiment has the same effects: The increase of the tension T reduces the length L and therefore the transverse moment My. The variations of the moment My are also relatively absorbed. The various embodiments of the invention can be resorted to stops, to limit the displacement of the pulley support 7 between two stop positions (not shown) located along the length of the boom 5. These stop positions are possibly adjustable to fit for example the size of the balloon, and therefore a nominal voltage.
    [0013] Optionally, the elastic member 9 is also adjustable: its stiffness k can be modified to adapt to the size of the balloon and / or external conditions (swell, wind).
    [0014] The installation 1 may furthermore comprise a compensating assembly to compensate for variations in distance between the installation 1 and the aerostat 100. These variations also cause voltage variations T in the cable 4, which variations may be transient and abrupt. The compensation assembly thus makes it possible: - either to release (or unwind) a length of cable, to limit the voltage in the second strand 42 of the cable 4 to a value below a maximum value, that is to say say to release the second strand 42 too tight cable 4, - or remove (or wind) a length of cable, to limit the voltage in the second strand 42 of the cable 4 to a value above a minimum value, c that is, to keep the second strand 42 of the cable 4 under tension. FIG. 4 gives an exemplary embodiment of such a compensation assembly integrated in the pulley support 7, the pulley support 7 being still mobile with respect to the boom 5, and connected thereto by an elastic member 9, whereby the transverse moment My applied to the platform 2 can be reduced. First, this pulley support 7 comprises for example: - an input pulley 6a which takes the first strand 41 of the cable, and - an output pulley 6b which deflects the second strand 42 of the cable 4 to the aerostat; this output pulley 6b thus having the function of the pulley 6 of the embodiments presented above. Secondly, the pulley support 7 comprises at least one compensation pulley 61 movably mounted relative to the pulley support 7, said compensating pulley 61 being also biased by a return spring 91. The cable 4 passes through the pulleys (for example , the output pulley 6, the input pulley, and the compensation pulley). Advantageously, the pulley support 7 comprises a plurality of compensation pulleys 61, 62 (for example two or more than two) which are mounted movable in translation relative to said pulley support 7, each of these compensation pulleys being biased by a spring 91, 92 towards positions which distance them two by two from a median position. The assembly is then able to store in a given space a longer cable length. The cable 4 is engaged in the compensation assembly, and successively passes through the input pulley 6a, successively by the compensation pulleys 61, 62, to store a length of cable, and by the output pulley 6b before s extend to the aerostat 100. The cable 4 thus makes several trips back and forth in the compensation assembly as in a hoist, but which here makes it possible to swallow lengths of cable or to release cable lengths while maintaining a voltage thanks to the return springs. The compensation assembly may comprise as many compensation pulleys as necessary, with identical return springs or with different stiffnesses. In addition, each compensation pulley can be equipped with a stop to adjust its allowable stroke. It is thus possible to size the races of the compensation pulleys and the values of the stiffness of the return springs in order to obtain a predetermined characteristic of lengths swallowed by the cable as a function of a tension. Each of these races and / or stiffness is optionally adjustable to adapt to the size of the balloon and / or external conditions (swell, wind). The compensation assembly thus makes it possible to absorb variations in cable length and / or voltage variations T in cable 4. It is thus advantageous to integrate this compensation assembly with the pulley support according to the invention. to limit the variations of transversal moment My seen by the platform 2 in addition to the reduction of this transversal moment My seen by the platform 2.
    [0015] Finally, the compensation assembly may optionally be integrated in the platform 2 and move the winch 3 on said platform in the longitudinal direction of the boom 5. 15
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Installation (1) for retaining an aerostat (100) comprising: - a platform (2) rotatably mounted about a vertical axis (Z), said platform comprising a winch (3) for winding and unrolling a cable (4) to which is attached said aerostat, - a boom (5) which extends substantially horizontally from the platform, and - a pulley (6) adapted to guide the cable from the winch, said installation being characterized in that it further comprises: - a pulley support (7) for supporting the pulley, said pulley support being movable relative to the boom, and - an elastic member (9) which connects said pulley support to the boom. 20
    [0002]
    The plant of claim 2, further comprising a compensation assembly for compensating for voltage or length variations of the cable. 25
    [0003]
    3. The installation according to claim 2, wherein the compensation assembly is integrated in the pulley support (7).
    [0004]
    4. The installation according to claim 2 or claim 3, wherein the compensation assembly comprises a compensating pulley (61) movably mounted and which is biased by a return spring (91), and the cable (4). ) passes successively by the pulleys to store a length of cable. 35
    [0005]
    5. The installation according to claim 2 or claim 3, wherein the compensation assembly comprises at least two compensating pulleys (61, 62) movably mounted and which are each biased by a return spring (91, 92) which away from each other relative to a median position of said compensation pulleys, and the cable (4) passes successively by the pulleys to store a length of cable.
    [0006]
    6. The installation according to any one of claims 1 to 5, further comprising at least one stop to limit a permissible displacement of the pulley support (7) relative to the boom (5).
    [0007]
    7. The installation of claim 6, wherein the stop is adjustable to change the allowable displacement of the pulley support (7).
    [0008]
    8. The installation according to any one of claims 1 to 7, wherein the pulley support (7) is connected to the boom by a sliding connection for sliding along the boom, and the elastic member (9). urges the pulley support towards one end of the boom opposite the platform.
    [0009]
    9. The installation according to any one of claims 1 to 7, wherein the pulley support (7) is integral with an arm (12) pivotally mounted relative to the boom, and the elastic member (9). solicit the arm towards the boom.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3021032A1|2015-11-20|INSTALLATION FOR RETAINING AEROSTAT
    EP1879827B1|2011-07-27|Sling device for a piece with force compensation and hoisting system comprising the same
    EP2809571B1|2016-03-23|Receiving assembly for receiving a seagoing vessel and system for recovering and deploying such a vessel in the sea
    FR2949223A1|2011-02-25|Device i.e. reel, for unrolling e.g. sheathed copper wire on coil in telephonic field, has fixation and centering system for fixation and centering axle on coil, and self-locking system integrated to bracket using flange of coil
    EP1714872A1|2006-10-25|Apparatus for taking aerial photographs
    FR2974335A1|2012-10-26|PANTOGRAPH FOR RAILWAY VEHICLE
    FR2824529A1|2002-11-15|Natural gas feed between transport ship and receiving mast has transfer boom supported on mast and connected to ship via deformable hose
    EP2468621B1|2016-03-02|Device for launching and recovering a submersible or surface craft.
    EP2663481B1|2015-04-01|Device for bringing an electrical conductor into contact with an electrical conductor onboard a mechanical lift vehicle
    FR2643353A1|1990-08-24|DEVICE FOR PREVENTING THE BALANCING OF A LOAD UNDER A SUPPORT BRACKET, IN PARTICULAR A PORTIC
    EP3347668B1|2019-08-28|Device for transporting a torpedo from a transport carriage to a launching tube
    EP3225582B1|2018-09-12|Folding structure making up a tower crane
    EP3620344B1|2020-12-02|Railway vehicle comprising an element for adjusting a secondary suspension system
    EP3620343A1|2020-03-11|Railway vehicle comprising an element for adjusting a secondary suspension system
    EP3426916B1|2020-05-06|Airborne wind turbine
    FR3033153A1|2016-09-02|DEVICE FOR HANDLING AND TOWING A SUBMERSIBLE OBJECT
    FR2508884A1|1983-01-07|MECANO-PNEUMATIC LIFTING SYSTEM
    FR2669602A1|1992-05-29|Lighter-than-air machine including at least one variable-geometry cylindrical balloon
    FR3113019A1|2022-02-04|Braking device for a trolley traveling along a zip-line cable
    FR3056552A1|2018-03-30|EXTERNAL ANCHORING HARPOON FOR AIRCRAFT
    FR3059053A1|2018-05-25|AIRBORNE WIND TURBINE
    FR3048739A1|2017-09-15|AIRBORNE WIND TURBINE
    FR3066485A1|2018-11-23|SYSTEM FOR IMMERING AN OBJECT FROM A FLOATING OR NON-FLOATING PLATFORM
    FR2939398A1|2010-06-11|Moving load e.g. helicopter, handling securing device for use on e.g. deck of frigate, has guiding and retaining device cooperated with rails for integrating carriages with rails, and cable retaining unit fixed to load lashing point
    FR2510200A1|1983-01-28|Aero generator orientation control system - uses moving vane mounted on directional vane and coupled to potentiometer to measure wind speed and initiate automatic braking
    同族专利:
    公开号 | 公开日
    FR3021032B1|2018-01-12|
    WO2015173492A1|2015-11-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE646279C|1933-04-30|1937-06-11|Demag Akt Ges|Single-line airship mooring winch with switchable back gear|
    GB527707A|1939-04-04|1940-10-15|Samuel Hugh Richards|Improvements in or relating to power winding mechanism|
    US2723833A|1953-05-08|1955-11-15|Burfeind Henry Frank|No-power holding, low-inertia, winch system|
    US4842221A|1988-04-21|1989-06-27|Westinghouse Electric Corp.|Lightning hardened tether cable and an aerostat tethered to a mooring system therewith|
    US20090184196A1|2008-01-22|2009-07-23|Andrew John Price|Wide area aerial crane system|
    KR20100065856A|2008-12-09|2010-06-17|한국항공우주연구원|The bottom mooring system for lighter-than-air system|CN107150784A|2016-03-03|2017-09-12|辅英科技大学|Sounding balloon is tethered at control device|
    CN113859571A|2021-11-30|2021-12-31|中国飞机强度研究所|Airplane mooring device and mooring method|US4421286A|1979-08-02|1983-12-20|Otis Engineering Corporation|Mooring system|US10266259B1|2016-12-20|2019-04-23|Makani Technologies Llc|Systems and methods for recovery of tethered airborne vehicle|
    CA3055206A1|2017-03-06|2018-09-13|Hoverfly Technologies, Inc.|Constant tension tether management system for a tethered aircraft|
    CN106988964B|2017-04-07|2018-12-14|班陈义|Kite overhead wind power generator|
    CN111003135A|2019-12-19|2020-04-14|中国电子科技集团公司第三十八研究所|Five-point type mooring device for mooring balloon|
    法律状态:
    2015-05-29| PLFP| Fee payment|Year of fee payment: 2 |
    2015-11-20| PLSC| Publication of the preliminary search report|Effective date: 20151120 |
    2016-05-30| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-12-03| PLFP| Fee payment|Year of fee payment: 5 |
    2019-09-27| PLFP| Fee payment|Year of fee payment: 6 |
    2019-10-11| FC| Decision of inpi director general to approve request for restoration|Effective date: 20190905 |
    2020-05-27| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-22| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1454239A|FR3021032B1|2014-05-13|2014-05-13|INSTALLATION FOR RETAINING AEROSTAT|
    FR1454239|2014-05-13|FR1454239A| FR3021032B1|2014-05-13|2014-05-13|INSTALLATION FOR RETAINING AEROSTAT|
    PCT/FR2015/051196| WO2015173492A1|2014-05-13|2015-05-05|Installation for mooring a lighter-than-air aircraft|
    [返回顶部]