EP1428788A1 - Flèche télescopique - Google Patents

Flèche télescopique Download PDF

Info

Publication number
EP1428788A1
EP1428788A1 EP03020886A EP03020886A EP1428788A1 EP 1428788 A1 EP1428788 A1 EP 1428788A1 EP 03020886 A EP03020886 A EP 03020886A EP 03020886 A EP03020886 A EP 03020886A EP 1428788 A1 EP1428788 A1 EP 1428788A1
Authority
EP
European Patent Office
Prior art keywords
guy
telescopic
rope
shot
stand
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
EP03020886A
Other languages
German (de)
English (en)
Other versions
EP1428788B1 (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 a Anienk shot, telescopic shots telescopic from the anien shot and an anchoring that at least one articulated on one of the shots Guy frame, at least one guy rope supported by the guy frame and erecting means for erecting the guy stand from a to the boom folded folded transport position in an upright operating position.
  • Telescopic booms have become known in which the guy stand consists of there are two guy supports, which are spread out in a V-shape in the operating position (see DE 100 22 658 A1).
  • the guy supports are hinged to a swivel frame, which is pivotally attached to the top of the articulation shot, so that the guy supports are erected by swiveling the swivel frame become.
  • the guy supports can be relative to the swing frame be pivoted to be spread out in a V-shape. Erecting and that The guy supports are spread out using appropriate hydraulic cylinders realized.
  • the guy bracket To supply the hydraulic cylinders with hydraulic fluid in a simple manner and at a suitable distance from the pivot axis of the guy stand To be able to link, the guy bracket must be arranged on the articulation his. If the guy stand were attached to one of the telescopic sections, one would be Hose reel required.
  • the present invention is therefore based on the object of improving To create telescopic boom of the type mentioned, the disadvantages of the prior art Avoids technology and further develops the latter in an advantageous manner.
  • an improved arrangement of the guy stand is to be created that still causes higher loads and a simple erection of the guy stand in his Operating position allowed.
  • the erecting means for erecting the guy stand consist of its operating position from a tie rod, which the guy stand with an inner Telescope shot connects that opposite the telescope shot on which the Guy stand is articulated, can be telescoped.
  • the guy stand When telescoping the boom, i.e. when extending the inner telescopic shot mentioned to which the tie rod is articulated, the guy stand is automatically pulled by the tie rod erected.
  • the erection means can be free of external energy Power jacks are trained. There are no pressure cylinders to erect the Guy rack required.
  • the tie rod directs the guy stand only so far that the guy stand is inclined in its operating position so that the resulting force from the guy rope acting on the guy stand a lever arm with respect to the articulation point of the guy bracket, which in the tie rod induced a pulling force.
  • the guy stand is in its operating position not exactly in the line of action of the resulting tension on the guy rope Guy frame, but is preferably at an acute angle of less than 30 ° inclined, so that the resulting force of the guy rope tries to Push the guy stand back into its transport position. However, this is from prevented the tie rod.
  • the guy bracket itself can be unlocked at its joint his. In its operating position, it becomes stable from the tensile force of the tie rod and the resulting force of the guy rope held with respect to the Balance the pivot axis of the guy stand.
  • the guy rope is advantageously not attached to the guy stand, but is only preferred by the projecting end of the guy stand deflected by means of a pulley and runs over the guy stand from an anchor point on the collar to one of the inner telescopic shots an attachment point on an outer telescopic shot. It is expedient the guy rope on the one hand on the collar of the innermost telescopic section and on the other struck at the foot of the articulation shot.
  • the guy stand only serves to redirect the continuous guy rope.
  • the guy stand is preferably not on the collar of the articulated shot, but hinged to the collar of a middle boom section.
  • the Guy rack can be articulated on each collar of the telescopic boom.
  • the guy stand sits on the collar of the first one, directly in the Articulated shot of the telescopic shot. This can result in a significant Load capacity increase compared to anchoring with the articulation arranged guy stand can be reached.
  • too several guy frames can be arranged on several boom sections.
  • a Appropriate arrangement is that a first guy stand on the first telescopic shot, taken directly in the articulation shot, and a second guy stand on one of the further inner ones, relative to said one first telescopic section telescopic sections, preferably the second telescopic shot.
  • the tie rod that raises the respective guy stand and in the operating position holds can in principle be attached to various telescopic shots compared to the telescopic shot on which the guy stand sits, are arranged further inside. However, it is preferably provided that the tie rod is articulated on the collar of the next telescopic shot, the is recorded directly in the telescopic shot on which the guy stand is articulated. This ensures that the tie rod only moves one Telescope shot is to be adjusted. Raising also works if a telescope shot after next is not telescoped.
  • the length of the tie rod can be adjusted to a To allow adaptation to different extension positions of the telescopic boom.
  • the tie rod can advantageously consist of a telescopic tube that can be locked in several extension lengths.
  • the guy stand could basically consist of only one guy support, the is arranged and pivoted in the luffing plane of the telescopic boom.
  • the guy stand is preferably there of two guy supports, each articulated in such a way that they are in their operating position are spread apart in a V-shape.
  • the guying includes in this case two guy ropes, one of each one the guy supports are supported.
  • the guy supports are preferred articulated such that they are essentially parallel in the transport position are folded towards each other on the boom. They are preferably only one only pivot axis pivotable, which is inclined to the luffing plane of the boom.
  • the guy supports can be disconnected from each other.
  • each of the guy supports is connected to a tie rod through which the guy supports can be erected synchronously with each other.
  • the guy rope or each guy rope is on one or pullable into a rope storage and extendable from this and by means of a rope lock can be locked in a desired rope length.
  • a friction lock cable lock in principle can be considered to provide a friction lock cable lock.
  • a form-fitting rope lock is provided.
  • On everyone of the guy ropes can thicken pieces towards their ends, especially on the guy rope each clamped rope clips, provided with the Rope lock can be positively engaged.
  • the guy cables can absorb the correspondingly expensive winch and the resulting heavy construction can be avoided.
  • the problems with a frictional cable clamp especially a change in the Clamping effect by changing the coefficient of friction over the course of the operating time, eliminated.
  • the guy rope in several predetermined lengths through the Rope lock can be locked.
  • the cable lock has a movable locking piece that depending on the position either Guy rope can run through with one or more thickening pieces or captures one of the thickening pieces.
  • the cable lock is 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 tensioned.
  • a cable lock actuator in particular a hydraulic cylinder, movable in the longitudinal direction of the rope, whereby the guy rope can be tensioned.
  • the cable lock and / or the cable storage are preferably on the articulation section arranged.
  • the guy rope or each of the guy ropes can be on its lower Hinge point extended and retracted and in the desired length be locked.
  • the arrangement of the rope lock and the rope storage on Articulation shot has the advantage that even with an arrangement of the guy stand on one of the inner telescopic shots no power lines to one The inner telescopic sections must be placed around the rope lock or the Operate rope storage.
  • At least one storage bottle can advantageously be provided as the rope storage device be in which the guy rope or each guy rope is retractable. Doing so at the end of the guy rope preferably a thin auxiliary rope attached to the an auxiliary winch is wound up and pulls the guy rope into the storage bottle or when pulling out the guy rope instead into the storage bottle is pulled. It is understood that the auxiliary winch is only catching the Guy ropes are used and do not absorb the rope forces of the guy during operation. The operating forces are absorbed by the rope lock.
  • the telescopic boom 1 according to FIG. 1 comprises an articulation section 2 which is around a horizontal rocking axis 3 in a manner known per se by means of a rocking cylinder 4 can be bobbed up and down.
  • the telescopic boom 1 further comprises four telescopic sections 5, 6, 7 and 8, the telescopic from the articulation shot 2 or apart and into each other are.
  • a guy 9 is provided comprises two guy ropes 10, each from the foot area of the articulation shot 2 are guided to the collar of the innermost telescopic section 8.
  • the guy ropes 10 are guided over a guy stand 11, which in the illustrated version on the collar of the first telescopic shot 5, which is directly in the articulation shot 2 is recorded, is articulated.
  • the guy stand includes 11 two guy supports 12, which in their erected operating position FIG. 1 shows that they are spread apart in a V-shape.
  • Each of the guy supports 12 is inclined to the vertical rocker plane 13 by an acute angle ⁇ to the outside (see Figure 2).
  • the guy supports 12 are preferably only one Pivot axis 14 in the area of the top of the telescopic section 5 on this articulated.
  • the pivot axis 19 is inclined to the seesaw plane 13 in such a way that the guy supports 12 from a transport position in which they are essentially lie parallel to each other on the telescopic boom 1, as shown in the figure 3 shows how the V-shaped spread operating position can be pivoted Figures 1 and 2 show.
  • the guy supports 12 are not only inclined in relation to the luffing plane 13 in the erected operating position, but also in relation to a cross-sectional plane perpendicular to the longitudinal axis of the telescopic boom at the angle ⁇ shown in FIG.
  • the inclination with respect to the cross-sectional plane 15 is chosen such that the resulting force F res acting on the respective guy support 12 from the respective guy rope 10 has a lever arm compared to the guy support 12, ie the guy support 12 does not run exactly in the line of action of the resulting force F. res .
  • the guy rope 10 runs over the guy support 12 and is deflected at its projecting end via a deflection roller 16.
  • the effective direction of the resulting force corresponds to the bisecting angle of the angle defined by the two rope sections of the guy rope converging on the deflection roller 16.
  • the guy support 10 is thus slightly backwards, ie inclined towards the articulation section 2, so that the guy rope 10 tries to press the guy support 12 into its transport position.
  • the corresponding torque is, however, intercepted by a tie rod 17, which is articulated on the one hand on the respective guy support 12 and the collar of the second telescopic section 6.
  • the slight inclination of the guy support 12 towards the articulation shot ensures that the tie rod 17 is always only subjected to tension.
  • the tie rod 17 consists of a telescopic tube, the length of which is adjustable.
  • the two tube parts of the tie rod 17 can be locked together in different extension states in order to adapt the length of the tie rod 17 to different extension states of the telescopic boom.
  • the two tie rods 17 are used for automatic erection at the same time of the two guy supports 12.
  • FIG. 3 shows, in the transport position Guy bracket 11 on articulation shot 2.
  • the tie rod is first 17 with extended. If it reaches its extended target length, it is locked and cannot be extended any longer. Then the telescopic shot 5 further extended from the articulation section 2, the tie rod 17 effective and sets up the guy stand 11.
  • the guy supports 12 pivot about their swivel axes 14. In the extended operating position of the telescopic boom According to Figure 1, the guy supports 12 take the previously described upright position.
  • the guy rope 10 is on the one hand on the collar of the innermost telescopic section 8 struck, via the guy support 12 led away without being locked, and finally at the foot of the Linkage shot 2 struck.
  • a cable store 18 is located on the articulation section 2 provided, into and from which the respective guy rope 10 are pulled can.
  • the cable store 18 consists of a block and tackle with several bottles 19, which are mounted on the articulation shot 2.
  • the articulated shot end of the Guy rope 10 is connected to an auxiliary rope 20 which is connected to an auxiliary winch 21 is wound up. In the operating position, i.e. if the guy rope 10 from the Rope storage 18 is pulled out, the auxiliary rope 20 is pulled from the auxiliary winch 21 and pulled into the cable storage 18. Will the guy rope for transportation of the crane, the auxiliary rope 20 is wound on the auxiliary winch 21 and pulled the guy rope 10 into the pulley of the rope store 18.
  • a rope lock 22 is provided, with which the guy rope on the articulation section 2 can be posted.
  • the cable lock 22 comprises 22 a locking piece 23, the form-fitting with one on each Guy rope 10 pressed rope clamp 24 can be brought into engagement.
  • the locking piece 23 can be moved by means of an actuator 25 which is shown in FIG Execution as a hydraulic cylinder 26 is formed.
  • the locking piece 23 can on the one hand out of the way of the guy rope or on it attached thickening pieces or rope clamps 24 are driven.
  • the locking piece 23 once it has captured a thickening piece 24 has to be moved in the longitudinal direction of the rope in order to tension the guy rope.
  • the locking piece 23 is rigid on the hydraulic cylinder 26 attached, more specifically to the collar portion of the cylinder 27 from which the Piston rod 28 emerges.
  • the piston rod 28 is articulated at its end Steel structure of the articulation shot articulated.
  • the cylinder 27 is in a backdrop Guide 29 guided so that the cylinder 27 and the locking piece attached 23 travels a predetermined path when the hydraulic cylinder unit 26 is operated.
  • the guide 29 is designed such that for coupling and uncoupling Locking piece runs transversely to the guy rope 10.
  • the locking piece moves for tensioning 23 then essentially parallel to the guy rope.
  • FIG. 1 shows the guy stand 11 on the collar of the first telescopic shot 5.
  • the guy stand also on the articulation section 2 or on one of the other telescopic sections 6, 7 to hinge.
  • the arrangement of the guy bracket 11 on the first telescopic shot 5 is, however, particularly advantageous with regard to the increase in load capacity.
  • the further embodiment according to FIG. 5 differs from that previously described Execution essentially in that two guy stands 11 are provided are.
  • the first guy bracket 11 sits as in the previously described embodiment on the collar of the first telescopic shot 5, which is directly in the articulation shot 2 is included and is with two tie rods 17 on the collar of second telescopic section 6 articulated.
  • the second guy stand 11 is on the Collar of said second telescopic section 6 is pivotally articulated and articulated by means of two tie rods 17 on the collar of the third telescopic section 7.
  • the V-shaped spread, the swiveling and the raising of the two Guy frames 11 are analogous to the previously described embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
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 DE20219126U1 (de) 2002-12-10 2002-12-10 Teleskopausleger
DE20219126U 2002-12-10

Publications (2)

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

Family

ID=32115659

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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015134509A1 (fr) * 2014-03-03 2015-09-11 Manitowoc Crane Companies, Llc Élément tendeur à longueur réglable
CN105084233A (zh) * 2015-06-29 2015-11-25 北汽福田汽车股份有限公司 起重机、在起重机上构建超起装置的方法
CN105923059A (zh) * 2016-06-07 2016-09-07 王雄 半挂车车体翻转方法及翻转装置
CN106103332A (zh) * 2014-01-20 2016-11-09 马尼托瓦克起重机有限责任公司 用于将起重机悬吊组件连接到支承柱上的系统和方法

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DE202004009019U1 (de) * 2004-05-26 2005-12-29 Liebherr-Werk Ehingen Gmbh Teleskopausleger
DE202004017771U1 (de) * 2004-11-16 2006-03-23 Liebherr-Werk Ehingen Gmbh Kranausleger
US7558984B2 (en) * 2005-04-27 2009-07-07 Texas Instruments Incorporated Apparatus and method for test and debug of a processor/core having advanced power management
DE202005009317U1 (de) * 2005-06-14 2006-10-19 Liebherr-Werk Ehingen Gmbh Kran
US8944737B2 (en) * 2005-12-16 2015-02-03 Gregory John Black Construction system, method and apparatus
CN101746675B (zh) * 2009-12-31 2012-05-02 三一汽车制造有限公司 起重机超起装置及其控制系统和控制方法
US8241098B1 (en) * 2011-05-12 2012-08-14 Latimer Leslie B Adjustable conveyor assembly for a combine
CN102689847B (zh) * 2012-06-04 2014-07-16 徐州重型机械有限公司 伸缩臂起重机及其超起装置
CN102942127B (zh) * 2012-12-07 2015-04-29 中联重科股份有限公司 后拉紧调节装置和起重机
DE202014006460U1 (de) 2014-08-11 2015-11-12 Liebherr-Werk Ehingen Gmbh Teleskopausleger eines Krans mit Abspannung sowie Kran
DE102015000473B4 (de) * 2015-01-14 2024-02-22 Liebherr-Werk Ehingen Gmbh Kran mit Abspannung
DE102016114837A1 (de) 2016-08-10 2018-02-15 Terex Global Gmbh Teleskopausleger mit Abspannsystem für einen Mobilkran und Abspannverfahren hierfür
DE202016005619U1 (de) * 2016-09-12 2016-12-19 Liebherr-Werk Ehingen Gmbh Kran
DE102017101113B3 (de) 2017-01-20 2018-07-12 Terex Global Gmbh Teleskopausleger mit Stangenabspannsystem für einen Mobilkran und Abspannverfahren hierfür
JP7013192B2 (ja) * 2017-10-06 2022-01-31 住友重機械建機クレーン株式会社 クレーン、ジブ組立て方法
DE102018116575A1 (de) * 2018-07-09 2020-01-09 Terex Global Gmbh Stütze für den hinteren Abspannstrang eines Teleskopkrans
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
DE102019122071B3 (de) 2019-08-16 2020-09-17 Tadano Demag Gmbh Teleskopausleger mit ausklappbarem Mast
US20210180403A1 (en) * 2019-12-11 2021-06-17 Leverage Design Holding, LLC Ladder Stiffener
US20230278238A1 (en) * 2020-07-22 2023-09-07 Hakusan Corporation Long arm
DE102020215260B4 (de) * 2020-12-03 2022-06-23 Tadano Faun Gmbh Verfahren zum Betrieb eines Krans und Kran

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106103332A (zh) * 2014-01-20 2016-11-09 马尼托瓦克起重机有限责任公司 用于将起重机悬吊组件连接到支承柱上的系统和方法
CN106103332B (zh) * 2014-01-20 2018-05-29 马尼托瓦克起重机有限责任公司 用于将起重机悬吊组件连接到支承柱上的系统和方法
US10053340B2 (en) 2014-01-20 2018-08-21 Manitowoc Crane Companies, Llc System and method for connecting a crane suspension assembly to a support column
US10280049B2 (en) 2014-01-20 2019-05-07 Manitowoc Crane Companies, Llc System and method for connecting a crane suspension assembly to a support column
WO2015134509A1 (fr) * 2014-03-03 2015-09-11 Manitowoc Crane Companies, Llc Élément tendeur à longueur réglable
EP3489188A1 (fr) 2014-03-03 2019-05-29 Manitowoc Crane Companies, LLC Élément tendeur à longueur réglable
US10479657B2 (en) 2014-03-03 2019-11-19 Manitowoc Crane Companies, Llc Adjustable length tensioning member
CN105084233A (zh) * 2015-06-29 2015-11-25 北汽福田汽车股份有限公司 起重机、在起重机上构建超起装置的方法
CN105923059A (zh) * 2016-06-07 2016-09-07 王雄 半挂车车体翻转方法及翻转装置
CN105923059B (zh) * 2016-06-07 2018-01-02 王雄 半挂车车体翻转方法及翻转装置

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Publication number Publication date
DE20219126U1 (de) 2004-04-15
US7213717B2 (en) 2007-05-08
DE50311604D1 (de) 2009-07-30
US20040129663A1 (en) 2004-07-08
EP1428788B1 (fr) 2009-06-17

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