EP1428788B1 - Flèche télescopique - Google Patents

Flèche télescopique Download PDF

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Publication number
EP1428788B1
EP1428788B1 EP03020886A EP03020886A EP1428788B1 EP 1428788 B1 EP1428788 B1 EP 1428788B1 EP 03020886 A EP03020886 A EP 03020886A EP 03020886 A EP03020886 A EP 03020886A EP 1428788 B1 EP1428788 B1 EP 1428788B1
Authority
EP
European Patent Office
Prior art keywords
rope
guy
telescopic
accordance
guying
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 - Fee Related
Application number
EP03020886A
Other languages
German (de)
English (en)
Other versions
EP1428788A1 (fr
Inventor
Hans-Dieter Dipl. Ing. Willim
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.)
Liebherr Werk Ehingen GmbH
Original Assignee
Liebherr Werk Ehingen GmbH
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 Liebherr Werk Ehingen GmbH filed Critical Liebherr Werk Ehingen GmbH
Publication of EP1428788A1 publication Critical patent/EP1428788A1/fr
Application granted granted Critical
Publication of EP1428788B1 publication Critical patent/EP1428788B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • 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

Definitions

  • the present invention relates to a telescopic boom of a crane with an Anienkschuss from the Anienkschuss austeleskopierbaren telescopic shots and a bracing, the at least one hingedly mounted on one of the shots Abspannbock, at least one brace supported by the guy brace and Aufrichtstoff for erecting the Abspannbocks from one to the boom having folded transport position in an upright operating position.
  • the Abspannbock consists of two guy supports, which are spread in the operating position V-shaped (see. DE 100 22 658 A1 ).
  • the guy supports are hinged to a swing frame which is pivotally mounted on the top of the pivot shaft so that the guy supports are raised by pivoting the swing frame.
  • the guy supports can be pivoted relative to the swing frame to be spread in a V-shape.
  • the erection and spreading of the guy supports is realized via corresponding hydraulic cylinders.
  • the brace To provide the hydraulic cylinder in a simple manner with hydraulic fluid and at a corresponding distance from the pivot axis of the guy jib To be able to steer, the brace must be arranged on the pivot. If the guy clamp were mounted on one of the telescopic sections, a hose reel would be required.
  • the present invention is therefore an object of the invention to provide an improved telescopic boom of the type mentioned, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner.
  • an improved arrangement of the guy trestle is to be created, which causes even higher loads and allows easy erection of the guy trestle in its operating position.
  • the erection means for erecting the guy trestle in its operating position consist of a tie rod which connects the guy trestle with an inner telescopic weft which can be telescoped relative to the telescopic weft on which the guy truss is articulated.
  • the guy clamp is automatically raised by the tie rod.
  • the erection means can be formed free of energy-powered power lifts. There are no pressure cylinders needed to erect the guy trestle.
  • the tie rod only raises the guy trestle to such an extent that the resultant force acting on the guy trunnion from the guy rope has a lever arm with respect to the anchor point of the guy truss, which induces a tensile force in the tie rod ,
  • the guy block is not in its operating position exactly in the line of action of the resulting force of the guy rope on the guy block, but this is at an acute angle of preferably less tilted as 30 °, so that the resulting force of the guy rope tries to push the guy clamp back to its transport position. However, this is prevented by the tie rod.
  • the brace itself can be unlocked at its joint. It is held in its operating position stable by the tensile force of the tie rod and the resulting force of the guy rope, which are in balance with respect to the pivot axis of the guy trestle.
  • the guy rope is not struck at the guy trestle, but is deflected from the overhanging end of the guy truss only preferably by a diverting pulley and extends across the guy trestle from an anchor point on the collar of one of the inner telescoping shots to an abutment point on an outer telescoping section.
  • the guy rope is struck on the one hand on the collar of the innermost telescopic section and on the other hand at the foot of the Anlenkschusses. The guy trestle only serves to deflect the continuous guy rope.
  • the guy is preferably not hinged to the collar of the pivoting, but on the collar of a central boom shot.
  • the brace can be articulated on each collar of the telescopic boom.
  • the guy clamp is seated on the collar of the first telescopic section received directly in the pivoting joint.
  • a plurality of guy blocks may be arranged on a plurality of boom sections.
  • An expedient arrangement consists in the fact that a first guy clamp is seated on the first telescopic section received directly in the articulation section, and a second guy clamp is seated on one of the more inner telescopic sections which can be telescoped relative to the first telescopic section, preferably the second telescopic section.
  • the tie rod which straightens the respective jib and holds in the operating position, can basically be posted on various telescopic shots, which are located further inwards compared to the telescopic section on which the guy clamp sits.
  • the tie rod is hinged to the collar of the immediately next telescopic section, which is received directly in the telescopic section on which the guy clamp is articulated. This ensures that the tie rod is adapted only to the extension of a telescopic section. The erection works even if a telescope shot after the second is not telescoped out.
  • the tie rod is adjustable in its length to allow adaptation to different extended positions of the telescopic boom.
  • the tie rod can consist of a telescopic tube which can be locked in several extension lengths.
  • the brace could basically consist of only one guy support, which is arranged and pivotable in the rocker plane of the telescopic boom.
  • the brace consists preferably of two guy supports, which are articulated in each case such that they are spread in their operating position to each other V-shaped.
  • the bracing comprises in this case two guy ropes, one of which is supported by a respective one of the guy braces.
  • the guy supports are preferably articulated so that they are folded in the transport position substantially parallel to each other on the boom. Preferably, they are pivotable about only a single pivot axis, which is inclined to the rocker plane of the boom.
  • the guy supports can be unconnected with each other.
  • each of the guy supports is connected to a tie rod by means of which the guy supports can be erected synchronously with one another.
  • the guy rope or each guy rope can be pulled onto or into a rope store and pulled out of it as well as by means of this Locking a rope lock in a desired pitch.
  • it can be thought to provide a frictional cable lock.
  • a form-fitting acting rope lock is provided at each of the guy ropes.
  • At each of the guy ropes can be provided to their ends thickening, in particular on the guy rope each clamped cable clamps, which are positively engageable with the cable lock engaged.
  • the problems of a frictional cable clamp in particular a change in the clamping action by changing the coefficient of friction over the operating period, eliminated.
  • the guy rope can be locked in several predetermined lengths by the cable lock. It can be provided on each guy rope several spaced-apart thickening pieces, the cable lock has a movable locking piece, depending on the position optionally run through the guy rope with one or more thickening pieces or captures one of the thickening pieces.
  • the cable lock by means of a cable lock actuator, in particular a hydraulic cylinder, movable in the longitudinal direction of the rope, whereby the guy rope can be stretched.
  • a cable lock actuator in particular a hydraulic cylinder
  • the guy rope can be stretched.
  • the cable lock and / or the cable storage are preferably arranged at the pivoting joint.
  • the guy rope or each of the guy ropes can be extended and retracted at its lower pivot point and locked in the desired length.
  • the arrangement of the cable lock and the rope store at the pivot arm has the advantage that even with an arrangement of the guy trestle on one of the inner telescoping shots no power lines must be placed to one of the inner telescopic shots to actuate the cable lock or cable storage.
  • a rope storage can advantageously be provided at least one storage bottle, in which the guy rope or each guy rope is retractable.
  • a thin auxiliary rope is preferably attached to the end of the guy rope, which is wound up on an auxiliary winch and the guy rope moves into the storage bottle or is pulled into the storage bottle instead of pulling the guy rope.
  • the auxiliary winch is used only to catch up the guy rope and does not catch the rope forces of the guy during operation. The operating forces are caught by the rope lock.
  • the telescopic boom 1 according to FIG. 1 comprises a pivoting joint 2, which can be up and down about a horizontal rocking axis 3 in a conventional manner by means of a rocking cylinder 4.
  • the telescopic boom 1 further comprises four telescopic sections 5, 6, 7 and 8, which are telescopically telescoped out of the articulation section 2 or apart.
  • a bracing 9 which comprises two guy ropes 10, which are guided in each case from the foot region of the Anlenkschusses 2 to the collar of the innermost telescopic section 8.
  • the guy ropes 10 are guided over a Abspannbock 11, which is articulated in the illustrated embodiment on the collar of the first telescopic section 5, which is received directly in the Anlenkschuss 2.
  • FIG. 2 shows the Abspannbock 11 two guy supports 12, which in their erected operating position, the FIG. 1 shows, V-shaped spread apart.
  • Each of the guy supports 12 is inclined to the vertical rocker plane 13 at an acute angle ⁇ to the outside (see. FIG. 2 ).
  • the guy supports 12 are preferably articulated to this only about a single pivot axis 14 in the region of the top of the telescopic section 5.
  • the pivot axis 19 is thereby inclined to the rocker plane 13, that the guy supports 12 from a transport position in which they lie substantially parallel to each other on the telescopic boom 1, as this FIG. 3 shows, in the V-shaped spread operating position are pivotally, as the Figures 1 and 2 demonstrate.
  • the guy supports 12 are tilted in the upright operating position not only with respect to the rocker plane 13, but also with respect to a plane perpendicular to the longitudinal axis of the telescopic boom cross-sectional plane below the in FIG. 1 drawn angle ⁇ .
  • the inclination relative to the cross-sectional plane 15 is chosen such that the force acting from the respective guy rope 10 on the respective guy support 12 resulting force F res opposite the guy support 12 has a lever arm, ie the guy support 12 is not exactly in the line of action of the resultant force F. res .
  • the guy rope 10 passes over the guy support 12 and is deflected at its projecting end via a guide roller 16.
  • the effective direction of the resultant force corresponds to the bisector of the angle defined by the two cable sections of the guy rope converging on the guide roller 16.
  • the guy support 10 is thus slightly to the rear, ie inclined to the pivoting joint 2, so that the guy rope 10 tries to press the guy support 12 in its transport position.
  • the corresponding torque is intercepted by a respective tie rod 17, which is hinged on the one hand to the respective guy support 12 and the collar of the second telescopic section 6. Due to the slight inclination of the guy support 12 to the pivoting out ensures that the tie rod 17 is always claimed only to train.
  • the tie rod 17 consists of a telescopic tube whose length is adjustable. The two pipe parts of the tie rod 17 can be locked together in different Ausfahrzupartyn to adjust the length of the tie rod 17 to different Ausfahrzulor the telescopic boom.
  • the two tie rods 17 serve simultaneously the automatic erection of the two guy supports 12. Wie FIG. 3 The same applies to the two tie rods 17 is telescoped out of this position, the telescopic boom 1, ie the moves first telescopic section 5 from the Anlenkschuss 2, the tie rod 17 is first extended with. If this reaches its extended nominal length, it is locked and can not be extended any longer. If the telescopic section 5 is then extended further out of the pivoting joint 2, the tie rod 17 becomes effective and aligns the guy block 11.
  • the guy supports 12 pivot about their pivot axes 14. In the extended operating position of the telescopic boom according to FIG. 1 the guy supports 12 take the previously described upright position.
  • the guy rope 10 is struck on the one hand on the collar of the innermost telescopic section 8, passed over the guy support 12 without being locked to it, and finally struck at the foot of the Anlenkschusses 2.
  • a rope store 18 is provided in and out of which the respective guy rope 10 can be pulled.
  • the cable storage 18 consists of a pulley with a plurality of bottles 19 which are mounted on the Anlenkschuss 2.
  • the Anlenkschuss tenue end of the guy rope 10 is connected to an auxiliary rope 20 which is wound on an auxiliary winch 21. In the operating position, ie when the guy rope 10 is pulled out of the cable storage 18, the auxiliary cable 20 is subtracted from the auxiliary winch 21 and pulled into the cable storage 18. If the guy rope for the transport of the crane is retrieved, the auxiliary rope 20 is wound on the auxiliary winch 21 and pulled through the guy rope 10 in the tackle of the rope store 18.
  • a cable lock 22 is provided, with which the guy rope can be posted at the Anlenkschuss 2.
  • the cable lock 22 comprises a locking piece 23 which can be brought into positive engagement with in each case one on the guy rope 10 pressed-rope clamp 24 in engagement.
  • the locking piece 23 is movable by means of an actuator 25, which is formed in the illustrated embodiment as a hydraulic cylinder 26. The locking piece 23 can be driven on the one hand from the path of the guy rope or the attached thickening pieces or cable clamps 24.
  • the locking piece 23, once it has caught a thickening piece 24, to be moved in the longitudinal direction of the rope to tension the guy rope.
  • the locking piece 23 is rigidly secured to the hydraulic cylinder 26, more precisely on the collar portion of the cylinder 27, from which the piston rod 28 emerges.
  • the piston rod 28 is articulated at its end hinged to the steel structure of the Anlenkschusses.
  • the cylinder 27 is guided in a slide-like guide 29, so that the cylinder 27 and the locking piece 23 attached thereto travel a predetermined path when the hydraulic cylinder unit 26 is actuated.
  • the guide 29 is designed such that for engagement and disengagement the locking piece moves transversely to the guy rope 10. For clamping the locking piece 23 then moves substantially parallel to the guy rope.
  • the further execution according to FIG. 5 differs from the previously described embodiment essentially in the fact that two guy blocks 11 are provided.
  • the first brace 11 is seated as in the previously described embodiment on the collar of the first telescopic section 5, which is received directly in the Anlenkschuss 2 and is hinged with two tie rods 17 on the collar of the second telescopic section 6.
  • the second guy block 11 is pivoted on the collar of said second telescopic section 6 and articulated by means of two tie rods 17 on the collar of the third telescopic section 7.
  • the V-shaped spreading, the pivoting and the erection of the two guy blocks 11 is analogous to the previously described embodiment.

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

Claims (14)

  1. Flèche télescopique d'une grue avec un élément articulé (2), des éléments télescopiques (5, 6, 7, 8) pouvant être sortis de l'élément articulé (2) et un haubanage (9), qui présente au moins un chevalet de haubanage (11) logé de façon articulée sur un des éléments (2, 5, 6, 7, 8), au moins un câble de haubanage (10) soutenu par le chevalet de haubanage (11) ainsi que des moyens de levage (17) pour lever le chevalet de haubanage (11) d'une position de transport rabattue à une position de service verticale, les moyens de levage étant constitués d'un tirant d'ancrage (17), qui relie le chevalet de haubanage (11) à un élément télescopique intérieur (6), qui peut être sorti en vis-à-vis de l'élément (5) sur lequel le chevalet de haubanage (11) est logé de façon articulée,
    caractérisée en ce que le tirant d'ancrage (17) peut être réglé en longueur
    et le câble de haubanage (10) s'étend sur le chevalet de haubanage (10) sans être élingué au-delà de celui-ci d'un point d'accrochage sur un élément télescopique intérieur (8) à un point d'accrochage sur un élément télescopique extérieur (2).
  2. Flèche télescopique selon la revendication précédente, dans laquelle le chevalet de haubanage (11) est, dans une position de service, incliné de telle façon que la force résultante exercée par le câble de haubanage (10) sur le chevalet de haubanage (11) présente par rapport au chevalet de haubanage (11) un bras de levier qui induit une force de traction dans le tirant d'ancrage (17).
  3. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le câble de haubanage (10) s'étend du collet de l'élément télescopique le plus intérieur (8) à la région de pied de l'élément articulé (2).
  4. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le chevalet de haubanage (11) est articulé sur le collet d'un élément intermédiaire (5), de préférence sur le collet d'un premier élément télescopique (5) logé directement dans l'élément articulé (2).
  5. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le tirant d'ancrage (17) est articulé sur le collet de l'élément télescopique (6) le plus proche, qui est logé directement dans l'élément télescopique (5) sur lequel le chevalet de haubanage (11) est logé de façon à pouvoir pivoter.
  6. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le tirant d'ancrage (17) est constitué d'un tube télescopique avec plusieurs longueurs de déploiement.
  7. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le chevalet de haubanage (11) présente deux supports de haubanage (12) qui sont logés chacun de façon articulée de telle sorte qu'ils sont écartés l'un de l'autre en formant un V dans leur position de service et qu'ils peuvent être levés dans leur position de service à l'aide d'un tirant d'ancrage (17), et dans laquelle un câble de haubanage (10) s'étend au-dessus de chacun des supports de haubanage (12).
  8. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le chevalet de haubanage (11) est réglable en longueur, en particulier télescopique.
  9. Flèche télescopique selon l'une des revendications précédentes, dans laquelle plusieurs chevalets de haubanage (11) sont articulés sur plusieurs éléments (5, 6) télescopiques entre eux.
  10. Flèche télescopique selon l'une des revendications précédentes, dans laquelle le câble de haubanage (10) ou chaque câble de haubanage (10) peut être rentré et sorti d'un réservoir de câble (18) et peut être verrouillé à une longueur de câble souhaitée à l'aide d'une cosse de câble (22), dans laquelle le ou chaque câble de haubanage (10) présente de préférence à son extrémité des renflements (24), en particulier des serre-câbles fixés par pression, qui peuvent être mis en prise avec la cosse de câble (22) par engagement positif.
  11. Flèche télescopique selon l'une des revendications précédentes, dans laquelle plusieurs renflements (24) distants les uns des autres sont prévus et la cosse de câble (22) possède une pièce de verrouillage mobile (23), qui au choix laisse passer le câble de haubanage (10) concerné doté d'un ou plusieurs renflements (24) ou retient un de ces renflements (24).
  12. Flèche télescopique selon l'une des revendications 10 ou 11, dans laquelle la cosse de câble (22) peut être déplacée dans le sens longitudinal du câble à l'aide d'un entraînement de cosse de câble (25), en particulier à l'aide d'un vérin hydraulique (26), et le câble de haubanage (10) peut être tendu par le déplacement de la cosse de câble (22).
  13. Flèche télescopique selon l'une des revendications 10 à 12, dans laquelle la cosse de câble (22) et/ou le réservoir de câble (18) sont prévus sur l'élément articulé (2).
  14. Flèche télescopique selon l'une des revendications 10 à 13, dans laquelle le réservoir de câble (18) présente au moins un moufle (19) dans lequel le câble de haubanage (10) peut être escamoté, et/ou dans laquelle un câble auxiliaire (20) permettant de rentrer le câble de haubanage est fixé à l'extrémité du câble de haubanage (10).
EP03020886A 2002-12-10 2003-09-15 Flèche télescopique Expired - Fee Related EP1428788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20219126U 2002-12-10
DE20219126U DE20219126U1 (de) 2002-12-10 2002-12-10 Teleskopausleger

Publications (2)

Publication Number Publication Date
EP1428788A1 EP1428788A1 (fr) 2004-06-16
EP1428788B1 true EP1428788B1 (fr) 2009-06-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03020886A Expired - Fee Related EP1428788B1 (fr) 2002-12-10 2003-09-15 Flèche télescopique

Country Status (3)

Country Link
US (1) US7213717B2 (fr)
EP (1) EP1428788B1 (fr)
DE (2) DE20219126U1 (fr)

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DE202014006460U1 (de) 2014-08-11 2015-11-12 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans mit Abspannung sowie Kran
CN108910729A (zh) * 2018-09-29 2018-11-30 山东以琳智能科技有限公司 一种改善预应力起重臂塔机受力的装置及方法

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* Cited by examiner, † Cited by third party
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DE202014006460U1 (de) 2014-08-11 2015-11-12 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans mit Abspannung sowie Kran
DE102015009156A1 (de) 2014-08-11 2016-02-11 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans mit Abspannung sowie Kran
DE102015009156B4 (de) 2014-08-11 2020-07-16 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans mit Abspannung sowie Kran
CN108910729A (zh) * 2018-09-29 2018-11-30 山东以琳智能科技有限公司 一种改善预应力起重臂塔机受力的装置及方法

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DE50311604D1 (de) 2009-07-30
US20040129663A1 (en) 2004-07-08
US7213717B2 (en) 2007-05-08
EP1428788A1 (fr) 2004-06-16
DE20219126U1 (de) 2004-04-15

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