EP1879827A1 - Schlingenvorrichtung für ein teil mit kraftausgleich und diese umfassendes hubsystem - Google Patents

Schlingenvorrichtung für ein teil mit kraftausgleich und diese umfassendes hubsystem

Info

Publication number
EP1879827A1
EP1879827A1 EP06743851A EP06743851A EP1879827A1 EP 1879827 A1 EP1879827 A1 EP 1879827A1 EP 06743851 A EP06743851 A EP 06743851A EP 06743851 A EP06743851 A EP 06743851A EP 1879827 A1 EP1879827 A1 EP 1879827A1
Authority
EP
European Patent Office
Prior art keywords
floating support
sling
frame
vertical axis
spring means
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
Application number
EP06743851A
Other languages
English (en)
French (fr)
Other versions
EP1879827B1 (de
Inventor
Pascal Claraz
Jean-Marc Datas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Operations SAS
Original Assignee
Airbus Operations SAS
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 Airbus Operations SAS filed Critical Airbus Operations SAS
Publication of EP1879827A1 publication Critical patent/EP1879827A1/de
Application granted granted Critical
Publication of EP1879827B1 publication Critical patent/EP1879827B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack

Definitions

  • the present invention relates to a device for slinging a workpiece with force compensation, in particular adapted for use with a lifting system such as a traveling crane or crane supporting slung parts, and a lifting system comprising it.
  • Such lifting systems are intended for the handling of mass elements frequently from a hundred kilos to several tens of tonnes carried by a sling while offering a high accuracy in positioning along a vertical axis and a horizontal plane as it is usual when assembling elements of buildings, ships, aircraft or other devices such as electric generators.
  • a first difficulty in maintaining the positioning accuracy along the vertical axis is that the lifting systems or means, because of their mass and the mass they lift, carry and move, produce a load on the supporting structures. that can generate displacements of these structures or their foundation.
  • the movements of the load-bearing structures under the effect of its own movements are not penalizing, on the other hand, when several lifting means are integral with one and the same load-bearing structure, moving or loading one of the lifting means can cause a variation of positioning of another lifting means.
  • Measurements carried out on complexes of two traveling cranes have revealed induced movements of up to a few millimeters, at speeds of the order of 0.25 mm / s.
  • Another difficulty, independent of the number of lifting means, is that said means or structures to which they are attached are sensitive to the wind.
  • the combination of the effects of wind and the effects of interferences between lifting means can cause significant damage to the elements being assembled if it results in a vertical displacement of a supported element relative to a ground-based structure. which it is being edited.
  • a lifting of the order of 50 mm of an element being assembled on a fixed element may cause a break in the sling, if the element being assembled is already at least partially fixed to the fixed element, or very important damage to the carried element or the fixed element.
  • a known solution consists in using a dynamic system for controlling the position of the traveling cranes as a function of displacements of the carrying structure and for controlling the winches of the lifting means accordingly.
  • the present invention starts from another principle which is to limit the dynamic forces at the level of the connection of the winch with a part being assembled and for this purpose it is proposed to compensate the forces applied to the suspended part by an elongation or a narrowing of the sling between the winch and the workpiece under the simple effect of dynamic forces on the part being assembled.
  • the invention thus makes it possible to compensate for variations in height, induced by the movements of the carrying structure, by lengthening or narrowing of the sling, in the case where the part is already being assembled or when a resistant force opposes the movement of the slinged piece.
  • the present invention mainly relates to a sling device of a part characterized in that it comprises a sling provided with a non-expandable portion and a section provided with spring means allowing, in load, an elongation or an elastic shortening of a limited determined amplitude of the sling in response to a limited determined variation of the load on the part.
  • a movement of the carrier structure downwardly along the vertical axis tending to descend the part will be compensated by a reduction in the distance of the piece to the winch, in case the piece comes in abutment against a fixed element relative to the ground, in a predefined range, so that the force that the part applies to the fixed element is kept below a limit value low enough not to cause damage on the part handled, on the fixed element or on any other element related to the part and to the fixed element or arranged between the part and the fixed element.
  • the invention which comprises load compensating means varying the distance of the winch piece in response to a force applied to the workpiece along said vertical axis, allows a positioning retraction of the part suspended from a winch by a suspension cable. along the vertical axis.
  • the device comprises means for adjusting the amplitude of the elongation and the shortening of the sling as a function of the load (F1, F2). These means make it possible in particular to adapt the device to parts to be handled with different mass.
  • the spring means are part of a load compensating device, changing the distance from the workpiece to a winch to which the sling is connected in response to a force applied to the workpiece along the vertical axis of the sling, constituted by a frame, a floating support and said means now leaves the floating support, in the absence of application of force on the part along the vertical axis, in a position of equilibrium centered vertically with respect to the built under the weight of the room.
  • FIG. 1 a side view of a sling device according to the invention
  • Figures 2A and 2B schematic front views of the device according to the invention respectively under load in tension and under load in support
  • FIG. 3 a perspective side view of an exemplary embodiment of a charge compensating device according to the invention
  • FIG. 4 detailed perspective perspective views of elements of the device of FIG. 3
  • FIG. 5 the device of FIG. 3 in side view
  • FIG. 6 a sectional side view of a balance of the compensating device of FIG. 2.
  • FIGS. 7A, 7B and 7C side views of details of embodiment of a device according to the invention.
  • the sling device comprises a winch 2 moving on a rail and supporting a part 1 held by a sling 3.
  • the winch moves on the rail according to a control device not shown because traditional.
  • the sling can be shortened or lengthened by the winch so as to position the supported piece in front of a floor structure on which it must be assembled.
  • this winch can be replaced by any device for lifting a load by means of a sling.
  • the sling 3 is provided with a first non-extensible portion 3a above a section 3c provided with spring means 10, 10 'allowing, under load, elongation or elastic shortening of a given amplitude. limited the sling 3 in response to a limited determined variation of the load on the part 1.
  • the sling according to the example shown is further provided with a second non-expandable portion 3b below the section 3c.
  • the spring means 10, 10 ' are part of a load-compensating device 4, changing the distance of the workpiece to the winch 2 to which the sling 3 is connected, in response to a force F1, F2 applied to the workpiece according to the invention.
  • the force F1 is equal to the forces exerted on the sling in its part related to the winch and the supporting structure, these efforts, uncontrollable by nature, may exceed the capacities of the sling and that the force F2 is equal to the weight of the part to be assembled.
  • the compensating device consists mainly of a frame 5, a floating support 6 and said spring means 10, 10 '.
  • the spring means maintain the floating support 6 in a position of equilibrium, preferably a position for which the floating support 6 is centered vertically with respect to the frame 5 under the weight of the piece 1 in the absence of application of force on the part along the vertical axis A1.
  • this embodiment aims to limit the forces on the part and on the ground structure in the case of a vertical displacement of the winch caused by a deflection of the bearing structure either downwards or towards the high.
  • the frame 5, the floating support 6 and the spring means 10 constitute a deformable system at equilibrium under the action of the weight of the part. At equilibrium, the system is advantageously adjusted so that the floating support is centered vertically with respect to the frame 5.
  • the piece raises and abuts against an element of the structure on the ground S.
  • a force F1 is transmitted to the compensating device 4 through the floating support which is pulled down.
  • the spring 10 undergoes, in the proposed exemplary embodiment of a compression spring, a compression force C1, C2 and is compressed thereby allowing the floating support 6 to descend relative to the frame 5 which limits the the force applied by the part on the structure.
  • the bearing structure undergoes a subsidence A.
  • the structure S applies a counter-reaction force F2 to the part, the traction on the movable support decreases which relaxes the spring 10 and raises the movable support 6 to reduce or limit the force of support of the piece on the structure.
  • the sling device comprises means 16, 16 'for adjusting the amplitude of the elongation and shortening of the sling 3 according to the elongation and the shortening of the spring means 10 so as to adjust the midpoint of the floating support 6 according to the weight of the part 1 to be carried.
  • FIG. 1 An example of the device is shown in more detail in FIG. 1
  • the frame 5 comprises a body provided with front faces of which only parts 20a, 20b, 20c, 20d at the axis of the elements of the device are shown and a rear face 19.
  • the floating support 6 is mounted in the interior space defined by the front and back faces.
  • one of the frame 5 and the floating support 6 is provided with an upper end 7 connecting to a non-extensible part 3a of the sling 3, the other being provided with a lower end provided with means 7 'retaining the suspended part.
  • the frame 5 which is connected to the non-extensible top portion 3a of the sling by its upper end 7, the floating support 6 being provided with the retaining means T of the suspended part.
  • the floating support 6 is slidably mounted in the frame 5 along the vertical axis A1 between guide means 8, 8 ', 9, 9'.
  • the guide means 8, 8 ', 9, 9' comprise at least one vertical rack 8, 8 'integral with the floating support 6 meshing with a first pinion 9, 9' offset relative to the floating support 6 on a perpendicular axis vertical axis A1.
  • the device is double and symmetrical with respect to a plane passing through the axis A1 and perpendicular to the rear face 19 of the frame, the guide means 8, 8 ', 9, 9' being symmetrical with respect to said vertical axis A1, on either side of the floating support 6.
  • the floating support 6 comprises a single vertical rack and is sliding on the opposite side to the rack on a vertical rail is well understood possible according to the invention.
  • the guide means therefore comprise at least one rack 8 and a pinion 9, meshing with the rack 8 and having an axis of rotation 25 secured to the frame 5, perpendicular to said vertical axis A1 and to the front and rear faces of the frame, for allow a vertical displacement of the floating support in the frame.
  • the spring means 10, 10 'for their part are integral with an arm 15 of a rocker 11 mounted on a shaft 12 secured to the frame 5 and parallel to the axis of rotation 25 of the pinion 9, 9 .
  • the spring means 10, 10 ' are connected to the floating support 6 through a reduction device comprising said first pinion 9, 9', gear means 13, 13 ', 14, 14' rotating the balance 11, 11 'in a given angular sector.
  • the device is set to limit the force between the piece 1 and the ground structure to a value of 2% of the nominal load for a load of between 2000 daN and 5000 daN and uses as spring means 10 gas springs of known technology. It is possible to modify the operating range, in particular the value of the maximum forces when the device reaches the mechanical stop, by adapting the characteristics of the spring means used.
  • a setting of an equilibrium position of the device is provided.
  • the symmetrical device comprises two rockers driven in rotation in opposite directions around shafts 12, 12 'integral with the frame during vertical displacements of the floating support 6 relative to the frame 5 and the spring means 10, 10' are suspended by their two ends between the arms of the rockers 11, 11 '.
  • the reduction devices symmetrical with respect to the vertical axis A1, comprising the first pinion 9 and 9 'and means gear 13, 13 ', 14, 14' drive the rocker 11, 11 'in rotation in opposite directions on a given angular sector.
  • the rockers 11, 11 ' are hinged to the frame on the shaft 12 at a first end of the arms 15, 15' and each secured to this end of a gear element 14, 14 'driven by one the symmetrical gearing devices and oriented perpendicular to the arms.
  • FIG. 4 A view of a balance wheel is shown in FIG. 4, this figure showing the elements of the gearing device comprising the racks 8, 8 'on the floating support 6, one of the gears 9, 9' meshing with the racks, this pinion 9 being coaxial with a gear ring 13 actuating the gear element 14 of the balance 11.
  • the arms 15, 15' each receive a movable support 17, 17 'supporting the spring means 10, 10' and are provided with adjustment means 16, 16 'in the form of a worm 21, operated by a wheel 16, 16 ', receiving the movable support 17, 17'.
  • adjustment means 16, 16 'in the form of a worm 21, operated by a wheel 16, 16 ', receiving the movable support 17, 17' are provided with adjustment means 16, 16 'in the form of a worm 21, operated by a wheel 16, 16 ', receiving the movable support 17, 17'.
  • This arrangement makes it possible not to compress the spring means 10, 10 'when adjusting the position of the movable supports 17, 17', which makes it possible to adjust without particular effort on the means 16 and 16 '.
  • the movable supports 17 and 17 ' have identical positions on the arms 15 and 15' respectively.
  • FIG. 7A describes drive means 27 connecting the worm 21 of the arms 15 and 15 'and making it possible to simultaneously adjust the position of the mobile supports 17 and 17' while ensuring identical positioning of these supports in the arms 15 and 15 .
  • Such drive means which according to the example are made by shafts and gimbals can according to the invention be made by chains or hoses such a modification remaining within the general knowledge of the skilled person.
  • the device is designed so that for the position of equilibrium under load the floating support 6 has an upward travel latitude equal to its amplitude of travel downwards between an upper stop 23 and a lower stop 24.
  • the stops are reached at travel amplitude maxima fixed for example to ⁇ 5 cm around the equilibrium value to take into account the permissible extreme cases of sagging of the bearing structure.
  • the stress applied by the workpiece 1 on the structure or any element interposed between the workpiece and the structure remains below the value defined above is a load less than 100 daN.
  • needles 22 integral with each movable support 17, 17 ' moves in front of graduations 26 on the arms 15, 15'.
  • the device according to the example provides that the spring means 10, 10 'are connected in parallel with damping means 18, 18'.
  • device measuring and / or detecting means 28, 29, 30 are made.
  • an extreme position detection such as one or more end-of-travel sensors 28 makes it possible to detect whether the force reaches a determined limit.
  • FIG. 1 A device with end-of-travel sensors 28 connected to an alarm device 33 is represented in FIG.
  • the limit switches 28 may be contact, inductive or other.
  • FIG. 7A represents in particular an embodiment according to which end-of-stroke sensors 28 are arranged facing stop elements 34, 35 on the mobile part of the device.
  • a potentiometric sensor or an optical encoder can be used without this list being limiting.
  • An example of positioning of a potentiometric sensor is shown in FIG. 7C at the end of a holding axis of a gear element 14.
  • the sensors are advantageously connected to devices such as alarm devices and / or compensation evolution monitoring, the latter to alert operators in anticipation when, during an assembly operation, an evolution the amplitude of the compensating movements reflects a deterioration of the safety conditions.
  • the detection sensor or sensors are measurement sensors 29 delivering a signal representative of the real-time position of the mobile element of the device connected to an alarm system comprising means for measuring and monitoring the alarm. evolution of the amplitude of the compensating movements comprising means for detecting the exceeding of a threshold and for generating an alarm on exceeding said threshold.
  • the alarm system to which they are connected may comprise only a simple detection that the stop is reached or is near to being reached and trigger an alarm on this detection.
  • the detection means consist of markers such as visual indicators 30 on at least one of the parts in relative movement as shown in FIGS. 7B, 7C.
  • the rod 31 connected to the hook 7 'which slides in the guide 24 may have in its upper and lower parts color indicators which will appear or disappear under the guide 24 before the device reaches a mechanical stop.
  • these indicators 30 are arranged on a flattened recess on the cylindrical rod to avoid any risk of erasure by wear during sliding of the rod in the guide.
  • the invention further comprises a lifting system such as a crane or a traveling crane comprising a sling in two parts 3a and 3b between which is disposed a device according to.
  • a lifting system such as a crane or a traveling crane comprising a sling in two parts 3a and 3b between which is disposed a device according to.
  • the invention is not limited to the example shown and in particular an asymmetrical device for which one end of the spring means is integral with the frame is possible according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP06743851A 2005-05-12 2006-04-27 Schlingenvorrichtung für ein teil mit kraftausgleich und diese umfassendes hubsystem Not-in-force EP1879827B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0551237A FR2885610B1 (fr) 2005-05-12 2005-05-12 Dispositif d'elinguage d'une piece avec compensation d'effort et systeme de levage le comprenant
PCT/FR2006/050394 WO2006120363A1 (fr) 2005-05-12 2006-04-27 Dispositif d'élinguage d'une pièce avec compensation d'effort et système de levage le comprenant

Publications (2)

Publication Number Publication Date
EP1879827A1 true EP1879827A1 (de) 2008-01-23
EP1879827B1 EP1879827B1 (de) 2011-07-27

Family

ID=35517643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06743851A Not-in-force EP1879827B1 (de) 2005-05-12 2006-04-27 Schlingenvorrichtung für ein teil mit kraftausgleich und diese umfassendes hubsystem

Country Status (10)

Country Link
US (1) US7980610B2 (de)
EP (1) EP1879827B1 (de)
JP (1) JP5107235B2 (de)
CN (1) CN101171197B (de)
AT (1) ATE517838T1 (de)
BR (1) BRPI0608901A2 (de)
CA (1) CA2606557C (de)
FR (1) FR2885610B1 (de)
RU (1) RU2401241C2 (de)
WO (1) WO2006120363A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012206590A1 (de) 2012-04-20 2013-10-24 Coperion Gmbh Verfahren zum Betrieb einer Zellenradschleuse sowie Zellenradschleuse zur Durchführung des Verfahrens

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FI123784B (fi) * 2011-03-25 2013-10-31 Konecranes Oyj Järjestely kuormauselimen heilahduksen vaimentamiseksi nosturissa
CN102229404A (zh) * 2011-05-30 2011-11-02 郑霞 吊索缓冲弹簧
CN102358604A (zh) * 2011-09-09 2012-02-22 上海贝洱热系统有限公司 定滑轮重力牵引接触装置
CN104495596A (zh) * 2014-12-17 2015-04-08 张雪燕 一种可旋转式吊具装置
JP6613469B2 (ja) * 2015-09-30 2019-12-04 ジャパンマリンユナイテッド株式会社 重量構造物配置装置及び重量構造物配置方法
US10266266B2 (en) * 2016-05-23 2019-04-23 Wing Aviation Llc Payload delivery system with removable spool
DE102018106729A1 (de) 2018-03-21 2019-09-26 Liebherr-Werk Biberach Gmbh Gefederte Hebevorrichtung für einen Kran
CN108545609B (zh) * 2018-04-18 2019-07-02 太原北方重工机械有限公司 一种用于吊起安装钢结构的辅助调整平衡装置
CN110528893B (zh) * 2019-09-06 2021-05-04 广东建科建设咨询有限公司 一种装配式建筑预制构件精准装配设备
CN110884990B (zh) * 2019-11-14 2021-04-09 舟山长宏国际船舶修造有限公司 一种大型起重船超长起重臂吊装稳定结构
CN110950275A (zh) * 2019-12-18 2020-04-03 东阳汉林传感器有限公司 一种基于气液联动传感器的升降装置
US11608251B1 (en) 2021-01-20 2023-03-21 United States Of America As Represented By The Administrator Of Nasa Pneumatically adjustable lifting apparatus
CN113879976B (zh) * 2021-10-26 2023-12-12 温岭市凯恒电动葫芦有限公司 高稳定性安全型电动葫芦
CN113697719B (zh) * 2021-10-27 2021-12-28 南通巴兰仕机电有限公司 一种基于高效平衡举升的举升机
NL2032371B1 (en) * 2022-07-05 2024-01-19 Bomecon Construction & Verhuur B V A balancer device for hoisting, positioning and orientating a load

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102012206590A1 (de) 2012-04-20 2013-10-24 Coperion Gmbh Verfahren zum Betrieb einer Zellenradschleuse sowie Zellenradschleuse zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
ATE517838T1 (de) 2011-08-15
US7980610B2 (en) 2011-07-19
RU2401241C2 (ru) 2010-10-10
WO2006120363A1 (fr) 2006-11-16
JP5107235B2 (ja) 2012-12-26
CA2606557A1 (fr) 2006-11-16
CN101171197B (zh) 2012-06-27
FR2885610A1 (fr) 2006-11-17
BRPI0608901A2 (pt) 2012-07-31
EP1879827B1 (de) 2011-07-27
RU2007146145A (ru) 2009-07-10
CN101171197A (zh) 2008-04-30
CA2606557C (fr) 2013-07-16
JP2008540296A (ja) 2008-11-20
US20090026780A1 (en) 2009-01-29
FR2885610B1 (fr) 2009-01-16

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