EP1266861B1 - Grue télescopique avec un système de super-levage - Google Patents

Grue télescopique avec un système de super-levage Download PDF

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Publication number
EP1266861B1
EP1266861B1 EP02090212A EP02090212A EP1266861B1 EP 1266861 B1 EP1266861 B1 EP 1266861B1 EP 02090212 A EP02090212 A EP 02090212A EP 02090212 A EP02090212 A EP 02090212A EP 1266861 B1 EP1266861 B1 EP 1266861B1
Authority
EP
European Patent Office
Prior art keywords
bracing
crane according
telescopic crane
telescopic
cable drum
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.)
Expired - Lifetime
Application number
EP02090212A
Other languages
German (de)
English (en)
Other versions
EP1266861A1 (fr
Inventor
Michael Irsch
Alexander Knecht
Oliver Fries
Jens Fery
Roland Kuhn
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.)
Terex Demag GmbH and Co KG
Original Assignee
Terex Demag GmbH and Co 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 Terex Demag GmbH and Co KG filed Critical Terex Demag GmbH and Co KG
Publication of EP1266861A1 publication Critical patent/EP1266861A1/fr
Application granted granted Critical
Publication of EP1266861B1 publication Critical patent/EP1266861B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/16—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes for action on ropes or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
    • B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable

Definitions

  • the invention relates to a telescopic crane, in particular a vehicle crane, the one equipped with a superlift boom according to the preamble of Patent claim 1.
  • a generic telescopic crane which is designed as a vehicle crane, is For example, from DE 198 02187 A1 known.
  • This vehicle crane has a Boom with a basic box and several austeleskopierbaren from it Telescopic shots on. He is trained with a superlift device Provided with bracing, with the brace over the top of one on the back of the basic box erected Abspannbocks is guided. The bracing exists while two Operaabvolutionen.
  • a lower bracing, coming from the top of the Abspannbocks extends into the area of the lower end of the basic box, points while a fixed length. The lower bracing can therefore, for example, from be formed a linkage.
  • the second partial guy (upper guy) is off a flexible (i.e., slightly bendable transversely to the pulling direction) variable traction means Length formed, for example, from a rope or a chain, and leads from a Attachment point in the upper part of the jib to the top of the jib. in the Operating condition of the boom, the bracing by a in the range of Abspannbocks arranged tensioning device to relieve the telescopic shots held under tension.
  • This tensioning device is here as a winch formed, which is arranged in the lower part of the guy trestle.
  • the rope of upper bracing is doing over a pulley at the top of the Leading trestles guided to winch.
  • the upper guy on the winch to a length adjusted, at which the bracing the desired height of the relieving tensile forces reached.
  • the cable drum is powered by a braking device blocked, so that the desired voltage is maintained.
  • the winch must absorb the full load of the guy, it assigns one heavy and voluminous design.
  • the winch winds the guy rope in the usual way in a variety of ways juxtaposed turns schraubenlinigförmig on. It can also several turns layers are created one above the other.
  • the dimensions of a Winches are usually such that their width (in the direction of the axis of rotation seen) in the order of its outer diameter.
  • the guy of a superlift device is designed so that it Transport with the winch to the base box of the telescopic boom is foldable.
  • the length of the telescopic shots of the telescopic boom for the particular application is insufficient. Therefore, be often boom extensions in the form of a jib in lattice construction (Lattice tip) used.
  • Such a lattice tip is at the head of the inner Stan Telescope shot attached.
  • pivot joints which make it possible to Lattice tip in the retracted state of the telescopic boom on the outside of the Base box of the boom to fold. This is because of the winch occupied space without dismantling the guy Superlift device often not possible.
  • Object of the present invention is to provide a telescopic crane with the features of the preamble of claim 1 to the effect that the on The Abspannbcck the superlift device acting forces as low as possible Bending and torsional stresses cause and the space required for the Abspannbock is as small as possible in the state angekiappten to the base box, so that in particular a hinged to the base box jib still enough space.
  • An essential feature of the present invention is that the Clamping the Superliftincardi a memory device for the flexible Pulling means of the upper bracing and one of them functionally and physically separated having trained holding device for the traction means.
  • the holding device is such actuatable that the storage device in the operating state not with the tensile forces the guy is applied.
  • the storage device is no longer at high loads must be designed by the tensile forces of the bracing and therefore accordingly can be designed to be light and space-saving.
  • the holding device attached to the top of the guy clamp be useful at the same place, in which also the lower bracing with the guy is connected.
  • This allows an exact introduction of force, which avoids the development of bending loads in the guy trestle.
  • Of the Abspannbock is acted upon only by compressive forces. This requires the Bending trestle not so robust and voluminous and thus heavy built too will be like before.
  • the traction means of the upper bracing is expediently designed as a rope. In principle, it would also be possible to use a chain for bracing. Significant advantages arise when the rope of the bracing of several parallel strands, which is a band-shaped, so in the Cross section forming a flat unit.
  • the storage device as particular to form a motor-drivable cable drum, preferably at the end-trestle is arranged.
  • the cable drum could be moved to another location For example, be attached directly to the base box of the boom.
  • the cable drum is a very narrow body, so with a very short axial length (width B) formed.
  • width B axial length
  • the cable drum has one Outer diameter, at least five times, in particular at least ten times is as large as the width B. So it can externally an almost disc-like shape receive. This is especially possible if the rope of the upper bracing not helical, but only spirally on the rope drum is wound up.
  • the required length of the upper bracing first set by means of the holding device when the telescopic boom is not yet on the ultimately extended extension length is extended, and only then on the boom extend the desired length. This will cause the bias through the Drive system applied for the extension of the telescopic shots.
  • a cable drum instead of a cable drum, other storage devices can be used, for example, those with - similar to the pulley principle - looped arranged traction means, wherein the length of the loops is adjustable as needed.
  • the holding device such that a positive connection between the traction means and the holding device consists.
  • the holding device is a force-locking connection with the Traction designed the Superliftinraum. It is particularly recommended that Holding device designed as a clamping device. This can, for example, with Work clamp bodies that are designed as eccentric.
  • the clamping device is provided with a housing which on the Inside oblique sliding surfaces and several corresponding wedges having, under the action of the tensile forces of the traction means to be held with respect this traction means can be brought into a clamping position.
  • a separate device for releasing the clamping wedges from the clamping position provided.
  • This device for releasing for example, electromotive, be electromagnetically, hydraulically or pneumatically actuated.
  • the invention is applied to a telescopic crane, whose boom consists of two separate Abspannträgem Abspannbock has, over the tips of two separate strands of a bracing are guided, as is known from DE 100 22 658 A1.
  • the two Bracing beams can with their longitudinal axes an angle of 180 ° include, so aligned coaxially and each projecting laterally from the boom be aligned so that a lateral stabilization is achieved.
  • the two bracing can also be inclined to each other (angle less than 180 °) be employed.
  • the angle between 0 ° is advantageous and 180 ° freely adjustable to meet the respective needs.
  • the holding device of course consists of several units, so that assigned to each strand of the bracing a separate unit of the holding device is.
  • the telescopic crane shown in Fig. 1 is designed as a vehicle crane, with a a six-axle road chassis equipped undercarriage 1 and one a vertical axis rotatably mounted thereon uppercarriage 2 is equipped.
  • Upper carriage 2 carries a tiltable about a horizontal axis of rotation boom 3 and a counterweight consisting of a multitude of elements.
  • the boom 3 has at its lower end a base box 4, from which the one inside the other Telescopic shots 5, 6, 7, 8 by means of a telescoping device, not shown are extendable.
  • a hydraulic Rocker cylinder 27 is provided, on the one hand on the upper carriage 2 and on the other Base box 4 is articulated.
  • a hoist rope 9 leads from a winch on the Upper carriage 2 to a raised at the upper end of the boom 3 Hook block 10 to which a load can be attached.
  • the jib 3 is subject in particular to bending and buckling.
  • a guy 11 of a Superlift device provided, consisting of a lower brace 12 and a upper bracing 13 and one on the back of the base box 4th approximately perpendicular to the central axis of the boom 3 erected Anspannbock 14 out is.
  • the lower bracing 12 is on the one hand in the region of the lower end of the Base box 4 and on the other hand in the region of the top of the guy truss 14th attached.
  • the lower attachment point of the brace 12 can of course if necessary also z. B. be moved in the range of the counterweight.
  • the lower brace 12 has a fixed length and therefore can be designed for example as a linkage. Of course it is also possible to form the lower guy as rope or as a chain.
  • the upper brace 13 has a variable length to accommodate different Extension lengths of the telescopic boom 3 can be adjusted.
  • the upper Bracing 13 is in the upper part of the telescopic boom, preferably at the top of the attached to the innermost telescopic section 8 and is over the top of the bracing trestle 14 led. Details of this can be found in the schematic representation of Figure 2 corresponding to the detail X in Figure 1.
  • both the lower brace 12 and a one Part of the upper bracing 13 forming holding device 16 is attached.
  • a cable drum 15 which is driven by a motor, serves only as Rope store, so does not take the prevailing in the operating case in the bracing Pulling forces on. The latter is ensured by the holding device 16, on the next will be discussed in more detail below.
  • This cable drum 15 is unlike usual cable drums, which in relation to the diameter of a significantly greater width, i.e.
  • the rope diameter be considerably reduced compared to the design with a simple rope. This has, among other things, the advantage that when the deflection of the rope clearly smaller bending radii are possible. Overall, this leads to an extraordinary compact and space-saving design of the cable drum 15, since the drive and the Locking device of the cable drum should not be designed for heavy loads have to.
  • FIG. 3 is a schematic representation of the holding device 16 in a axial longitudinal section.
  • the holding device 16 has a housing 18, through that the upper bracing 13 is passed.
  • the bracing 13 of three individual strands, of which in the side view only a single strand is recognizable.
  • the housing 18 is on its inside with oblique sliding surfaces 19a, 19b provided, the conical in their extension to the upper bracing 13 run.
  • each clamping wedges 20a, 20b provided due to the friction under the tensile load of the bracing 13, the indicated by an arrow, be pulled to the left, so that under the Tensile load the clamping wedges 20a, 20b in a corresponding manner to the left move and the contact pressure of the clamping wedges 20a, 20b on the upper Bracing 13 is increased according to the wedge effect.
  • the holding device 16 can by means of a retaining tab 23 which is provided with a fastening eye 24, be hinged in the fixing point 17 as shown in FIG. 2.
  • the upper brace13 is performed via a guide roller 22, the pair according to FIG. 2 may be, led to the cable drum 15.
  • the design according to FIG. 3 ensures that the clamping force of the holding device 16 automatically increases when the tensile load in the upper brace 13 increases. In this way, without the requirement a positive connection in each case a secure locking of the upper bracing 13 guaranteed to the desired length.
  • the required preload in the upper bracing 13 can be ensured without problems, that the Holding device 16 with its clamping action shortly before reaching the desired extension length of the telescopic boom 3 is actuated and the Preload then over the telescoping device by the full extension is set to the desired extension length.
  • the clamping wedges 20a, 20b of itself in the clamped Dwell, a separate remindzieh liked is provided, the consists of the two units 21a, 21b.
  • This retraction device 21a, 21b can For example, as a hydraulic or pneumatic cylinder / piston system or be designed as an electromagnetically actuated plunger. The latter is shown in FIG. 3 indicated schematically.
  • the plunger of the retractor 21a, 21b, each at one of the clamping wedges 20a, 20b is articulated, stands under a spring load, at rest, the two clamping wedges 20a, 20b presses in the clamping position.
  • the electromagnets are actuated, respectively Pull plunger back to the right so that the clamping effect is released.
  • the Unlocking can be facilitated by the fact that the drive of the Cable drum 15 is operated in the sense of winding.
  • Such a cable drum 15, which in a preferred embodiment of the invention as is designed flat disc-like body is in Figure 4 as a perspective Sectional view shown. It has a winding core 26, on which the rope of the upper Abspann 13 is wound and the secure holding of the individual Winding layers of two circular side walls 25a, 25b is limited.
  • the bracing 13 of three parallel cable strands. These are each exactly spiraling to a plurality of winding layers directly wound side by side on the cable drum 15.
  • the individual ropes move so during winding not as a conventional cable drum helically around the winding core. Therefore, the ropes always keep one consistently exact alignment parallel to the side walls 25a, 25b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (13)

  1. Grue télescopique, en particulier grue sur véhicule, comprenant une flèche (3), qui présente un caisson de base (4) ayant plusieurs éléments télescopiques (5 - 8) pouvant sortir de façon télescopique de celui-ci, et est munie d'un haubanage (11) réalisé comme dispositif de superlevage, le haubanage (11) étant guidé sur la pointe d'un tréteau de support (14) érigé sur le dos du caisson de base (4) et étant constitué de deux haubanages partiels, desquels un haubanage inférieur (12) de longueur fixe s'étend de la pointe du tréteau de support (14) jusque dans la zone de l'extrémité inférieure du caisson de base (4) et un haubanage supérieur (13) formé d'un moyen de traction souple de longueur variable mène d'un point de fixation dans la partie supérieure de la flèche (3) vers la pointe du tréteau de support (14), le haubanage (11), dans l'état de service de la flèche (3), pouvant être maintenu sous une contrainte de traction par un dispositif de tension agencé dans la zone du tréteau de support (14) pour décharger les éléments télescopiques (5 - 8),
    caractérisée en ce que le dispositif de tension présente un dispositif de stockage pour le moyen de traction souple du haubanage supérieur (13) et un dispositif de maintien (16) réalisé de façon fonctionnellement et spatialement séparée de celui-ci pour le moyen de traction, qui peut être actionné de sorte que le dispositif de stockage, dans l'état de service, n'est pas sollicité par les forces de traction du haubanage (11).
  2. Grue télescopique selon la revendication 1,
    caractérisée en ce que le dispositif de maintien est fixé à la pointe du tréteau de support (14).
  3. Grue télescopique selon une des revendications 1 - 2,
    caractérisée en ce que le moyen de traction du haubanage supérieur (13) est réalisé comme câble.
  4. Grue télescopique selon la revendication 3,
    caractérisée en ce que le câble est constitué de plusieurs, en particulier d'au moins trois brins parallèles les uns aux autres.
  5. Grue télescopique selon une des revendications 1 - 4,
    caractérisée en ce que le dispositif de maintien (16) forme une liaison sous l'influence d'une force avec le moyen de traction.
  6. Grue télescopique selon la revendication 5,
    caractérisée en ce que le dispositif de maintien (16) est réalisé comme dispositif de serrage.
  7. Grue télescopique selon la revendication 6,
    caractérisée en ce que le dispositif de serrage présente un boítier (18) avec des surfaces glissantes inclinées (19a, 19b) agencées sur la face interne et plusieurs clavettes de serrage (20a, 20b) correspondant à celles-ci, qui, sous l'effet des forces de traction du moyen de traction, peuvent être amenées dans une position de serrage relativement au moyen de traction, ainsi qu'un dispositif (21a, 21b) pour libérer les clavettes de serrage (20a, 20b) de la position de serrage.
  8. Grue télescopique selon la revendication 7,
    caractérisée en ce que le dispositif de libération (21a, 21b) peut être actionné de façon électromotorisée, électromagnétique, hydraulique ou pneumatique.
  9. Grue télescopique selon une des revendications 3 - 8,
    caractérisée en ce que le dispositif de stockage est un tambour de câble (15), en particulier un tambour de câble (15) pouvant être entraíné de façon motorisée.
  10. Grue télescopique selon la revendication 9,
    caractérisée en ce que le tambour de câble (15) est agencé sur le tréteau de support (14).
  11. Grue télescopique selon une des revendications 9 - 10,
    caractérisée en ce que le tambour de câble (15) présente un diamètre externe qui est au moins cinq fois, en particulier au moins dix fois aussi grand que la largeur B du tambour de câble (15).
  12. Grue télescopique selon une des revendications 9 - 11,
    caractérisée en ce que le câble du haubanage supérieur (13) peut être enroulé sur le tambour de câble (15) avec ses enroulements exclusivement l'un sur l'autre.
  13. Grue télescopique selon une des revendications 1 - 12,
    caractérisée en ce que le haubanage du dispositif de superlevage présente deux brins séparés et le tréteau de support (14) deux supports, sur lesquels, à chaque fois, un des deux brins est guidé et qui, pour obtenir une stabilisation de la flèche (3), sont réglés ou réglables de façon inclinée l'un par rapport à l'autre en direction latérale relativement à leurs axes longitudinaux sous un angle jusqu'à 180°.
EP02090212A 2001-06-13 2002-06-11 Grue télescopique avec un système de super-levage Expired - Lifetime EP1266861B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10129022A DE10129022B4 (de) 2001-06-13 2001-06-13 Teleskopkran mit Superlifteinrichtung
DE10129022 2001-06-13

Publications (2)

Publication Number Publication Date
EP1266861A1 EP1266861A1 (fr) 2002-12-18
EP1266861B1 true EP1266861B1 (fr) 2003-12-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090212A Expired - Lifetime EP1266861B1 (fr) 2001-06-13 2002-06-11 Grue télescopique avec un système de super-levage

Country Status (3)

Country Link
EP (1) EP1266861B1 (fr)
AT (1) ATE256078T1 (fr)
DE (2) DE10129022B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102515039A (zh) * 2011-11-21 2012-06-27 三一汽车起重机械有限公司 一种起重机及其超起装置
CN104495624A (zh) * 2014-12-15 2015-04-08 太原重工股份有限公司 超起卷扬锁销装置控制系统及起重机

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ATE353849T1 (de) 2002-06-05 2007-03-15 Liebherr Werk Ehingen Teleskopausleger eines krans
DE10257658A1 (de) * 2002-12-10 2004-06-24 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans
DE20208740U1 (de) * 2002-06-05 2003-10-09 Liebherr Werk Ehingen Teleskopausleger eines Krans
DE20219126U1 (de) * 2002-12-10 2004-04-15 Liebherr-Werk Ehingen Gmbh Teleskopausleger
DE202004009782U1 (de) * 2004-06-22 2005-11-03 Liebherr-Werk Ehingen Gmbh Kran-Gitterausleger und Kran
CN102267670B (zh) * 2011-07-29 2013-03-20 徐州重型机械有限公司 一种连接架及具有该连接架的臂架系统和起重机械
CN102431899B (zh) * 2011-11-24 2013-07-24 徐州重型机械有限公司 超起卷扬控制系统及应用该系统的起重机
CN102431913B (zh) * 2011-12-08 2013-06-05 中联重科股份有限公司 起重机及其超起装置
CN102659038B (zh) * 2012-05-17 2013-12-04 中联重科股份有限公司 起重机及其超起装置
CN102735440B (zh) * 2012-07-05 2014-12-24 中联重科股份有限公司 超起机构的试验装置
CN103787197B (zh) * 2012-10-31 2015-09-23 徐工集团工程机械股份有限公司 用于起重机超起工况的控制系统以及起重机
CN103420281B (zh) * 2013-07-24 2015-10-14 三一汽车起重机械有限公司 起重机及其附属结构的拆装装置、拆卸方法及安装方法
CN103434952B (zh) * 2013-09-11 2015-10-28 徐州重型机械有限公司 一种超起涨紧锁止机构及起重机
CN104016249B (zh) * 2014-06-23 2016-07-06 徐州重型机械有限公司 一种超起前张紧拉板放置架、装配方法及起重机
DE102016114837A1 (de) 2016-08-10 2018-02-15 Terex Global Gmbh Teleskopausleger mit Abspannsystem für einen Mobilkran und Abspannverfahren hierfür
DE102017101113B3 (de) 2017-01-20 2018-07-12 Terex Global Gmbh Teleskopausleger mit Stangenabspannsystem für einen Mobilkran und Abspannverfahren hierfür
CN109052127B (zh) * 2018-10-23 2023-10-24 徐州市三森威尔矿山科技有限公司 一种两自由度反馈调整夹绳机构
CN112079268B (zh) * 2020-08-25 2021-10-01 中联重科股份有限公司 工程机械的超起装置及工程机械
CN112723172A (zh) * 2021-01-14 2021-04-30 浙江三一装备有限公司 起重机超起半径控制方法、装置及起重机

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DE19606109A1 (de) * 1995-12-12 1997-06-19 Liebherr Werk Ehingen Fahrzeugkran
DE19802187C2 (de) * 1998-01-16 1999-11-25 Mannesmann Ag Vorrichtung zum Abspannen einer Superlift-Einrichtung eines Teleskopkranes
DE10022600B4 (de) * 1999-06-28 2007-09-27 Terex-Demag Gmbh & Co. Kg Teleskopkran

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102515039A (zh) * 2011-11-21 2012-06-27 三一汽车起重机械有限公司 一种起重机及其超起装置
CN102515039B (zh) * 2011-11-21 2014-01-15 三一汽车起重机械有限公司 一种起重机及其超起装置
CN104495624A (zh) * 2014-12-15 2015-04-08 太原重工股份有限公司 超起卷扬锁销装置控制系统及起重机

Also Published As

Publication number Publication date
DE10129022A1 (de) 2003-01-02
DE10129022B4 (de) 2005-07-28
EP1266861A1 (fr) 2002-12-18
ATE256078T1 (de) 2003-12-15
DE50200134D1 (de) 2004-01-22

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