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EP0984895B1 - Kran mit einem teleskopausleger - Google Patents

Kran mit einem teleskopausleger Download PDF

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Publication number
EP0984895B1
EP0984895B1 EP98934847A EP98934847A EP0984895B1 EP 0984895 B1 EP0984895 B1 EP 0984895B1 EP 98934847 A EP98934847 A EP 98934847A EP 98934847 A EP98934847 A EP 98934847A EP 0984895 B1 EP0984895 B1 EP 0984895B1
Authority
EP
European Patent Office
Prior art keywords
locking
piston
securing
telescopic
unit
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
EP98934847A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0984895A1 (de
Inventor
Klaus Conrad
Thomas Krebs
Michael Irsch
Jens Fery
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.)
Demag Mobile Cranes GmbH and Co KG
Original Assignee
Demag Mobile Cranes 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
Priority claimed from DE19824671A external-priority patent/DE19824671C2/de
Application filed by Demag Mobile Cranes GmbH and Co KG filed Critical Demag Mobile Cranes GmbH and Co KG
Publication of EP0984895A1 publication Critical patent/EP0984895A1/de
Application granted granted Critical
Publication of EP0984895B1 publication Critical patent/EP0984895B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
    • 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
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Definitions

  • the invention relates to a crane with a telescopic boom according to the preamble of claim 1.
  • the driver device consists of a hydraulic block with each other opposite cylinders for the one and formed by their pistons extendable bolt locking the respective shot and one perpendicular to it arranged hydraulic piston-cylinder unit for actuating the respective Locking bolt.
  • the hydraulic elements of the driver device are in place so in operative connection that the radial piston-cylinder unit for retracting the respective locking bolt can only be operated if the Driver device with the out or bag-telescopic shot over the locking bolt is coupled.
  • a comparable telescopic system is known from EP 0 754 646 A1. It consists of a basic shot and at least two against the basic shot telescopic shots. The shots are in their respective positions to each other releasable socket bolts penetrating through the walls of adjacent shots (Locking bolt) fixed.
  • the telescopic system also has one of the Shots limited, preferably single-stage with pressure medium on both sides loadable lifting cylinder. This lifting cylinder is provided with drivers, which can be brought into active engagement with the shot to be relocated in each case.
  • the piston rod is the Piston cylinder unit hinged to the inner end of the outer shot.
  • DE 31 25 603 A1 discloses a telescopic boom with a basic boom and three telescopic shots, which are directly or indirectly via chain drives by means of a single-stage piston-cylinder unit are retractable and extendable.
  • the cylinder housing of the Piston cylinder unit is at its rear end at the inner end of the Articulated boom.
  • the piston rod is at the front end via a bolt connected to a cylinder case that includes the extended piston rod, the near its inner end with a bolt to the side walls of the first telescopic shot is connected.
  • the disadvantage of this construction is that all three telescopic shots can only be retracted and extended together and one targeted retraction and extension of only one telescopic shot is not possible.
  • the object of the invention is to provide a crane with a telescopic boom, the while maintaining the principle of individual telescoping of the shots by means of a piston-cylinder unit is inexpensive to manufacture and compared to known prior art enables a higher telescopic speed and whose usable load is higher.
  • each a fuse and Locking unit attached with recesses of the telescopic Shots can be detached.
  • the displaceable element of the piston-cylinder unit can optionally be the cylinder housing, in this case the piston rod with your articulated rear end to the inner end of the basic boom - or the Piston rod - in this case the cylinder housing is at its rear end articulated inner end of the basic boom. In both cases it is advantageous that by the arrangement of two securing and locking units the length of the Piston cylinder unit is only about 50% of the length of the main boom.
  • a shorter piston-cylinder unit means a shorter kink length, so that the Piston-cylinder unit designed dimensionally cheaper with the same lifting force can be. This in turn has a direct impact on the weight, which despite the Additional weight through the arrangement of the second safety and Locking unit is lower compared to a 100% length.
  • the arrangement with an am is preferred Basic boom hinged cylinder housing selected, in which the piston rod with a guiding and pulling device parallel to the piston-cylinder unit is connected, at the inner and outer ends of the two safety and Locking units are attached.
  • the guiding and pulling device consists of a cross member attached to the front end of the piston rod, and two each guide elements lying on the right and left of the cylinder housing.
  • the front one The end of the guide elements is with the cross bar on the one hand and the front one End area of the guide elements with the second securing and Locking unit on the other hand and the rear ends with the first securing and Locking unit connected.
  • the cross member preferably has a Web plate stiffened flat profile and the guide elements consist of Box profiles with internal sheet metal stiffeners.
  • the securing and locking unit arranged at the inner end has one on the cylinder housing of the piston-cylinder unit sliding bushing with is connected to the two guide elements.
  • This socket is slidable Sliding piece arranged mechanically via guide grooves and guide rings is in operative connection with the two safety bolts and the gripper.
  • the Arrangement of guide grooves and guide rings is chosen so that a Pulling the respective locking bolt is only possible if the two Safety bolts in the respective lateral recesses of the telescopic sections are retracted and vice versa the two safety bolts are pulled out the respective recesses is only possible if the respective locking bolt is set.
  • the actuating element for the sliding piece is preferably one with the piston-cylinder unit connected to the guide elements.
  • This Piston-cylinder unit is parallel to the cylinder housing of the shots moving piston-cylinder unit arranged.
  • locking and locking unit can be arranged on the arrangement Socket be dispensed with.
  • the other elements are congruent.
  • To put the locking bolt have the shots except those on the inside and outside Recesses provided at the end also in the central area. These additional recesses are preferably approximately 50% of the length of the Shots arranged one above the other. This means that for an input or Slide out about 50% of the length of the latch over the one at the inner end arranged locking and locking unit and for further engagement or Slide out between 50-100% the latch over at the outer end arranged locking and locking unit takes place.
  • a known piston-cylinder unit has the advantage that it is inexpensive is producible and good guidance in terms of security and Has locking unit.
  • the oil supply to the Piston cylinder unit facilitated by the fact that the bottom oil supply directly on End of the basic boom can be realized with the cylinder housing.
  • the amount of oil in the cylinder housing with hydraulic connections the have a large nominal diameter, without turbulence, in the shortest possible way into the Hydraulic tank are returned, which increases the speed at Telescopic operation is beneficial.
  • the center of gravity of the extended The main boom moves due to the weight of the hydraulic oil Cylinder after the main boom base, which is a reduction in Main boom head weight and thus an increase in payload.
  • Advantageous is also the mechanical interlock that is unaffected by electrical or hydraulic disturbances.
  • FIGS. 1a, b and 2a, b are in one with an oval cross section equipped basic boom 1 several telescopic sections 2 - 5 inserted into each other axially displaceable.
  • a unit is a telescopic boom for stationary or mobile cranes can be used.
  • telescopic shots 2 - 5 are carried out by means of a device known single-stage piston-cylinder unit.
  • the piston rod 16 (FIG. 2b) is not the embodiment, but the cylinder housing 6 on the extension arm 18 that closes the basic boom 1 by means of a bearing 7 articulated.
  • Telescopic shot 2-5 has a recess 2B, 2B '- 5B, 5B' on each side. In this recess is by means of the safety and Locking unit 8.1, a securing bolt 13, 13 'can be inserted.
  • a guide element 9, 9 ' is arranged, which on the front End are connected via a cross member 11 stiffened with a web plate 30. to A support roller 12 is attached in the area of the cross member 11.
  • Figure 3 shows a perspective view of the details of the interior End arranged locking and locking unit 8.1. It consists of one slidably arranged on the cylinder housing 6 of the piston-cylinder unit Bushing 28, which is connected to the end regions of the guide elements 9, 9 '. The Connection is via bolts 26.1, 26.2 - 26.1 ", 26.2" ( Figure 2a, b).
  • a sliding piece 21 is slidably arranged on the jack 28, a sliding piece 21 is slidably arranged. The shift takes place via a piston-cylinder unit 14 lying parallel to the cylinder housing 6, which in turn is firmly connected to the socket 28.
  • the sliding piece 21 is on the right and left a web plate 29, 29 'lying in the horizontal plane is arranged, which with a Guide groove 27, 27 'is provided.
  • This guide groove 27, 27 ' cooperates with a guide ring 22, 22 'connected to the respective securing bolt 13, 13' ( Figure 4, 5).
  • the two opposing securing bolts 13, 13 ' are retractable and extendable into the respective lateral recesses 2B, 2B '- 5B, 5B' ( Figure 4, 5).
  • a fork plate 31 with a guide ring 23 Perpendicular to the two web plates 29, 29 'is on Sliding piece 21 a fork plate 31 with a guide ring 23 is provided.
  • This Guide ring 23 interacts with a guide groove arranged on the gripper 24 33.
  • the gripper 24 is in a socket 32 as shown in FIGS. 4 and 5 guided.
  • proximity switches 25, 25.1, 25 ', 25.1', 25.2, 25.3, 25.2 ', 25.3' arranged in pairs. These signal at Displacement of the locking and locking unit 8.1 along the Cylinder housing 6 an approach to one of the side recesses 2B, 2B '- 5B, 5B '.
  • the individual steps in telescoping are shown in FIG. 4 in the sequence of steps a - d shown.
  • the sequence of steps a) is identical to the illustration in FIG. 1a, b, so that there is no need to repeat the description.
  • To extend the innermost Telescopic shot 5 is the fuse and arranged at the inner end Move locking unit 8.1 along the cylinder housing until it moves with the corresponding locking bolt 5A can be coupled.
  • the locking bolts 13, 13 'in the provided lateral recesses 5B, 5B 'pushed Before locking of the fourth telescopic section 5 with the third telescopic section 4 can be released according to the representation in Figure 4, the locking bolts 13, 13 'in the provided lateral recesses 5B, 5B 'pushed.
  • step sequence b) in FIG. 4 by moving the piston rod 16 to the left the innermost telescopic section 5 partially pushed out.
  • the sequence of steps b) shows the final state of this first extension phase.
  • Step sequence c) shows the final state of the retraction of the backup and Locking unit 8.1 and gripping the locking bolt 5A of the fourth Telescopic shot 5 by the invention at the outer end of the Piston cylinder unit arranged second locking and locking unit 8.2.
  • the locking bolts 13, 13 ' are inserted into the provided lateral recesses 5B, 5B 'pushed. That way the second locking and locking unit 8.2 with the innermost telescopic section 5 bolted.
  • Step sequence d) shows the final state of the complete pushing out of the innermost Telescopic shot 5 after activation of the piston-cylinder unit.
  • Locking bolt 5A in the corresponding receptacle of the third telescopic shot 4 a.
  • Figure 5 shows a section in the direction A-A in Figure 4.
  • This representation in connection with Figure 4 shows a situation where the innermost telescopic section 5 with the most End arranged locking and locking unit 8.1 is bolted.
  • Through this bolting becomes the innermost Telescopic shot 5 on the locking and locking unit 8.1 with the Piston cylinder unit bolted.
  • the locking pin 5A from the upper recess 34.1 pulled so that the innermost telescopic section 5 through Moving the piston rod 16 can be pushed out.
  • Figure 6 shows the same section A-A in Figure 4, with the difference that the Locking bolt 5A of the innermost telescopic section 5 in the upper recess 34.1 of the third telescopic section 4 is inserted. Accordingly, by the in Figure 3 described mechanical coupling of the safety bolts 13, 13 'from the lateral recesses 5B, 5B 'moved out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
EP98934847A 1997-05-28 1998-05-27 Kran mit einem teleskopausleger Expired - Lifetime EP0984895B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19722889 1997-05-28
DE19722889 1997-05-28
DE19824671A DE19824671C2 (de) 1997-05-28 1998-05-26 Kran mit einem Teleskopausleger
DE19824671 1998-05-26
PCT/DE1998/001498 WO1998054081A1 (de) 1997-05-28 1998-05-27 Kran mit einem teleskopausleger

Publications (2)

Publication Number Publication Date
EP0984895A1 EP0984895A1 (de) 2000-03-15
EP0984895B1 true EP0984895B1 (de) 2002-04-17

Family

ID=26037039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98934847A Expired - Lifetime EP0984895B1 (de) 1997-05-28 1998-05-27 Kran mit einem teleskopausleger

Country Status (6)

Country Link
US (1) US6189712B1 (ja)
EP (1) EP0984895B1 (ja)
JP (1) JP4068161B2 (ja)
AT (1) ATE216350T1 (ja)
DE (1) DE29824453U1 (ja)
WO (1) WO1998054081A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056122A1 (de) * 2007-10-31 2009-05-07 Terex-Demag Gmbh Kran mit teleskopausleger

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1072554B1 (de) * 1999-07-30 2004-03-17 Liebherr-Werk Ehingen GmbH Kran mit einem Teleskopausleger
FR2797862B1 (fr) * 1999-09-01 2001-11-16 Ppm Procede de telescopage d'une fleche de grue, dispositif pour sa mise en oeuvre et fleche de grue en faisant application
GB0122511D0 (en) * 2000-09-21 2001-11-07 Atecs Mannesmann Ag Locking unit for a telescopic system
DE10048224B4 (de) * 2000-09-21 2005-06-02 Terex-Demag Gmbh & Co. Kg Verriegelungseinheit für einen Teleskopausleger eines Krans
DE10104310B4 (de) * 2001-01-22 2005-02-03 Terex-Demag Gmbh & Co. Kg Fahrzeugkran mit Teleskopausleger
US6601719B2 (en) * 2001-09-21 2003-08-05 Link-Belt Construction Equipment Co., L.P., Lllp Locking and latching system for a telescoping boom
US20030071004A1 (en) * 2001-10-12 2003-04-17 Higgins David J. Extensible column
WO2007052339A1 (ja) * 2005-11-01 2007-05-10 Kato Works Co., Ltd. クレーンのブーム伸縮装置
US8467741B2 (en) * 2007-01-31 2013-06-18 Jerry Newman Mobile tower system
US7642987B2 (en) * 2007-01-31 2010-01-05 Jerry Newman Monopole tower system
US9312596B2 (en) 2007-01-31 2016-04-12 Jerry Newman Mobile tower system
US20110126700A1 (en) * 2007-07-12 2011-06-02 Johannsen Thorkil J Undercarriage for a telescopic frame
RU2472695C2 (ru) * 2007-09-05 2013-01-20 Палфингер Аг Форма профиля для крановой секции
DE202008016604U1 (de) * 2008-12-15 2009-03-19 Terex Demag Gmbh Teleskopausleger
DE102009006292B4 (de) * 2009-01-27 2015-03-26 Manitowoc Crane Group France Sas Verriegelungssystem für Teleskopkranausleger mit verschiebbarer Verriegelungseinheit
DE102009008557B4 (de) * 2009-02-12 2010-10-21 Montanhydraulik Gmbh Verriegelungskopf
DE102009009944B4 (de) * 2009-02-20 2011-02-24 Terex-Demag Gmbh Sicherungs- und Verbolzungseinheit
ES2459719T3 (es) * 2010-12-17 2014-05-12 Manitowoc Crane Group France Sas Sistema telescópico para pluma de grúa y pluma adicional
CN102491198B (zh) * 2011-11-29 2014-09-10 三一汽车起重机械有限公司 单缸插销油缸及具有该油缸的伸缩臂装置、起重机
JP5586573B2 (ja) * 2011-12-12 2014-09-10 株式会社加藤製作所 クレーンのブーム伸縮装置
CN102556858A (zh) * 2011-12-30 2012-07-11 大连理工大学 采用齿条传动实现缸销同步运动的臂架插销机构
DE102013006259B4 (de) * 2013-04-11 2024-09-12 Liebherr-Werk Ehingen Gmbh Teleskopausleger und Kran
DE102013011173B4 (de) * 2013-07-04 2019-05-23 Liebherr-Werk Ehingen Gmbh Verfahren zur Montage eines Krans sowie Anlenkschuss, Teleskopausleger und Kran
US10077173B2 (en) 2013-08-27 2018-09-18 Xuzhou Heavy Machinery Co., Ltd. Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm
CN103964323B (zh) * 2014-05-28 2015-12-30 徐州重型机械有限公司 一种伸缩式起重臂的设置方法、伸缩式起重臂及起重机
CN104649158B (zh) * 2015-03-03 2017-08-08 徐州重型机械有限公司 缸头体、单缸插销系统及起重机
US10106378B2 (en) 2015-11-03 2018-10-23 General Electric Company System and method for lifting with load moving machine
CN105565188B (zh) * 2015-12-29 2018-04-13 中联重科股份有限公司 防止油缸冲出节臂的结构和方法以及吊臂
EP3757054B1 (en) * 2019-06-24 2023-08-02 Manitowoc Crane Companies, LLC Electric actuation assembly for crane pinned boom
RU2723523C1 (ru) * 2019-12-23 2020-06-11 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" Стрела грузоподъёмной машины
DE102020129762B3 (de) * 2020-11-11 2022-02-17 Tadano Demag Gmbh Teleskopausleger eines Mobilkrans

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DE1944463A1 (de) * 1969-09-02 1971-03-04 Krupp Gmbh Mehrfacher Teleskopausleger,insbesondere fuer einen Autokran
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US4036372A (en) * 1975-12-15 1977-07-19 Clark Equipment Company Extension and retraction means for the telescopic boom assembly of a crane
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
DE19631547B4 (de) * 1996-07-24 2004-05-06 Terex-Demag Gmbh & Co. Kg Teleskopausleger, insbesondere für stationäre oder fahrbare Krane
DE19641193C2 (de) * 1996-09-24 2002-04-25 Mannesmann Ag Teleskopausleger, insbesondere für stationäre oder fahrbare Krane
DE19641191A1 (de) * 1996-09-24 1998-03-26 Mannesmann Ag Teleskopausleger, insbesondere für stationäre und fahrbare Krane
DE19824671C2 (de) * 1997-05-28 2002-09-19 Mannesmann Ag Kran mit einem Teleskopausleger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009056122A1 (de) * 2007-10-31 2009-05-07 Terex-Demag Gmbh Kran mit teleskopausleger
DE102007052954B3 (de) * 2007-10-31 2009-07-09 Terex Demag Gmbh Kran mit Teleskopausleger

Also Published As

Publication number Publication date
DE29824453U1 (de) 2001-03-01
US6189712B1 (en) 2001-02-20
EP0984895A1 (de) 2000-03-15
JP4068161B2 (ja) 2008-03-26
ATE216350T1 (de) 2002-05-15
WO1998054081A1 (de) 1998-12-03
JP2001526615A (ja) 2001-12-18

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