EP2248753A1 - Grue dotée d'une capacité à surmonter un point mort - Google Patents

Grue dotée d'une capacité à surmonter un point mort Download PDF

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Publication number
EP2248753A1
EP2248753A1 EP10004785A EP10004785A EP2248753A1 EP 2248753 A1 EP2248753 A1 EP 2248753A1 EP 10004785 A EP10004785 A EP 10004785A EP 10004785 A EP10004785 A EP 10004785A EP 2248753 A1 EP2248753 A1 EP 2248753A1
Authority
EP
European Patent Office
Prior art keywords
crane
piston
cylinder unit
dead center
arm
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
EP10004785A
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German (de)
English (en)
Other versions
EP2248753B1 (fr
Inventor
Hannes Steindl
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.)
Epsilon Kran GmbH
Original Assignee
Epsilon Kran 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 Epsilon Kran GmbH filed Critical Epsilon Kran GmbH
Priority to SI201031299A priority Critical patent/SI2248753T1/sl
Publication of EP2248753A1 publication Critical patent/EP2248753A1/fr
Application granted granted Critical
Publication of EP2248753B1 publication Critical patent/EP2248753B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • B66C23/545—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors with arrangements for avoiding dead centre problems during cylinder motion

Definitions

  • the invention relates to a crane, in particular a vehicle crane, with a first crane arm and at least one second crane arm, which are connected to one another via a joint and are pivotable relative to one another via a drive having a piston-cylinder unit, in each case starting from one of the two end positions which the crane arms are substantially parallel to each other until a dead center is reached when the longitudinal axis of the piston-cylinder unit is substantially in line with the hinge.
  • a common way to overcome the dead center of a piston-cylinder unit to the joint is that in which the crane arms are lifted with their load-carrying means against the ground. The occurring torque relative to the joint brings the piston-cylinder unit beyond the dead center and the crane can be folded.
  • This method is extremely cost-effective, since no additional material expenditure is necessary.
  • the disadvantage of this method is that the folding is thus relatively time-consuming and space-consuming, since the crane arms - in fact their load-carrying means - ground contact must be established while the two crane arms are unfolded.
  • such cranes are designed so that the drive not only has a piston-cylinder unit but for example, two parallel piston-cylinder units are used, the symmetrically move in the same direction, the two crane arms relative to each other.
  • the dead center of the two piston-cylinder units occurs at the same position of the joint, overcoming the dead center has to be done in the same manner as just described.
  • a pivot assembly for articulated boom which has an intermediate member between the two crane arms and two attached to the crane arms and the intermediate member lifting cylinders.
  • the entire pivoting angle is increased by the fact that a lifting cylinder is responsible for a pivoting range of about 160 degrees and the second lifting cylinder for a further additional pivoting range of about 120 degrees.
  • a lifting cylinder is responsible for a pivoting range of about 160 degrees and the second lifting cylinder for a further additional pivoting range of about 120 degrees.
  • it is avoided to have to overcome the dead center of a lifting cylinder, since neither of the two lifting cylinders must be extended to its dead center.
  • the work areas are divided between the two lifting cylinders.
  • the downside of this method is that it increases with Cost of materials and thus increased costs associated because an intermediate member and two powerful lifting cylinders are necessary to achieve a pivoting range of the two crane arms, which is greater than 180 degrees.
  • the object of the invention is to avoid the above-described disadvantages and to provide a comparison with the prior art improved crane, in which the dead center of the piston-cylinder unit is overcome to the joint.
  • this further drive causes a located in the dead center piston-cylinder unit - strictly speaking, the dead center occurs when the force vector of the piston-cylinder unit in line with the joint between the first crane arm and second Crane arm is - is freed from this dead center and thus again the piston-cylinder unit takes over the further pivoting of the two crane arms to each other.
  • the further drive is required only in the dead center position of the two crane arms and thus only has to be designed so powerful that its force is sufficient to overcome the dead center.
  • the further drive does not have to be carried out in order to pivot the two crane arms further, because after overcoming the dead center again the piston-cylinder unit takes over the pivoting, so you could view it as an auxiliary drive.
  • the previous construction of a crane can - in contrast to that in the DE 69 16 283 crane are retained - there are no major modifications necessary, the crane arms are only additionally equipped with the further drive. It is thus also possible that existing cranes are retrofitted with such a further drive to overcome a dead center of the piston-cylinder unit.
  • the space required during pivoting is minimized because no support of the folded crane arms on the ground is necessary and this can also be done in the raised state of the crane arms, which is especially in a small space - such as between houses, on construction sites and in the forest, etc.
  • piston-cylinder unit so that, for example, two essentially parallel piston-cylinder units are used, which move symmetrically in the same direction, the two crane arms relative to each other.
  • piston-cylinder unit By using a further drive, one is further not dependent on an additional joint or intermediate member between the two crane arms and the piston-cylinder unit to allow a pivoting beyond the dead center.
  • the further drive is provided with a pulling means which extends from the bottom of the first crane arm on the hinge over to the top of the second crane arm and thereby enables a good power transmission in a small footprint.
  • a chain suitable as traction means, as well as belts, ropes and other movable traction means are of course possible.
  • the further drive act via a releasable coupling device, as this allows small sizes and thus the folding is not limited by rods, joints or the like.
  • the first coupling part as a catching device and the ge caught second coupling part may be formed on another drive.
  • the releasable coupling device can also be provided with a lever, as this allows an improved power transmission.
  • the further drive is performed inside one of the two crane arms, since there is thus no space requirement on the outside of one of the two crane arms, thus ensuring maximum collapsibility and space savings.
  • the crane arms are made telescopic, as this greater ranges can be achieved.
  • a control device which triggers an automatic switching of the effective direction of the piston-cylinder unit and thus no manual switching is required.
  • this switching operation is performed by a switching device having a switching valve, which acts as a limit switch, which causes a reversal of the piston-cylinder unit at the switching point.
  • a switching device of course, any other technical possibility can be taken into account, which can trigger a switching operation, such as a sensor or a photoelectric sensor or the like.
  • a piston-cylinder unit frees the other piston-cylinder unit from its dead center.
  • piston-cylinder units of the drives are designed so that they are substantially equivalent and their arrangement is substantially parallel to each other on the sides of the first crane arm and asymmetrically on the sides of the second crane arm.
  • the crane as a Z-crane, which has a rotatably mounted vertical crane column, a hinged thereto and at least one articulated arm articulated to the lifting arm articulated.
  • the lifting arm is referred to by way of example as a first crane arm and the articulated arm as a second crane arm, but this is not to be regarded as a restriction.
  • a first crane arm 11 is shown, which is articulated via the hinge 14 with a second crane arm 12.
  • the further drive is mounted, which has a piston-cylinder unit 3.
  • the piston-cylinder unit 3 is connected via a chain 5 with the second crane arm 12.
  • the pivoting proceeds as before - without the intervention of the further drive - the piston-cylinder unit 13 extends the second crane arm 12 until the piston-cylinder unit 13 reaches the area of the dead center (if the longitudinal axis of the piston-cylinder). Unit 13 and the hinge 14 are in line). Due to the gravitational force, the dead center position is overcome and the piston-cylinder unit 13 can retract and move the second crane arm 12.
  • the piston-cylinder unit 13 For pivoting the second crane arm 12, the piston-cylinder unit 13 extends until it reaches the area of its dead center. Now the piston-cylinder unit 3 of the further drive enters, the chain 5 moves the second crane arm 12 and the piston-cylinder unit 13 overcomes its dead center position. Subsequently, the piston-cylinder unit 13 continues until the two crane arms reach their end position, the parking position.
  • Fig. 2 is a variant too Fig. 1 can be seen, in which the piston-cylinder unit 3 of the further drive is attached to the upper side of the second crane arm 12.
  • the course of the chain 5 of the further drive is also from the bottom of the first crane arm 11 to the top of the second crane arm 12.
  • the operation of the Einschwenkvorganges is mutatis mutandis to the description of Fig. 1 ,
  • a releasable coupling device 6 in which a first coupling part 7, which is designed as a catching device, is attached to the first crane arm 11 and the second coupling part 8 on the piston-cylinder unit 3 of further drive is attached.
  • the piston-cylinder unit 3 of the further drive enters and the second coupling part 8 engages in the first coupling part 7 and thus causes the second crane arm 12 is folded up and the Piston-cylinder unit 13 is released from its dead center. Subsequently, the piston-cylinder unit 13 continues until the two crane arms reach their end position, the parking position, while the two coupling parts 7 and 8 have separated again during retraction.
  • Fig. 4 is a variant of Fig. 3 to see, in which the piston-cylinder unit 3 of the further drive on the first crane arm 11 and the first coupling part 7, also designed as a catching device, on the second crane arm 12.
  • the operation of the Einschwenkvorganges is identical to the description of the identical Fig. 3 ,
  • Fig. 5 is shown how the piston-cylinder unit 3 of the further drive, which is located on the first crane arm 11, presses on a lever 9, which is located on the second crane arm 12, and thus the dead center of the piston-cylinder unit 13 to the joint 14th can overcome.
  • the course of the Einschwenkvorganges is mutatis mutandis identical to the examples shown above.
  • Fig. 6 is a variant of Fig. 5 shown, in which the piston-cylinder unit 3 of the further drive on the second crane arm 12 and the lever 9 on the first crane arm 11 is located.
  • the course of the Einschwenkvorganges is mutatis mutandis identical to the examples shown above.
  • Fig. 7 is a variant too Fig. 1 shown, in which the further drive is carried out in the interior of the first crane arm 11 and is not located on the outside of one of the two crane arms. This results in a maximum space savings.
  • the operation of the Einschwenkvorganges is identical to the description of Fig. 1 ,
  • Fig. 8 an asymmetrical arrangement of the piston-cylinder unit 13 to the piston-cylinder unit 3 of the further drive from the first crane arm 11 to the second crane arm 12 is shown, wherein the piston-cylinder unit 13 is mounted on the left side of the crane arms and the Piston-cylinder unit 3 of the further drive the right side of the crane arms is attached.
  • both piston-cylinder units visible, so that the differences are more visible.
  • the piston-cylinder unit 3 of the further drive is articulated at a different, lower position on the crane arm 12 than the piston-cylinder unit 13, which shows that the dead center of the respective piston-cylinder unit at a different position of the Joint 14 enters.
  • both the piston-cylinder unit 13 and the piston-cylinder unit 3 of the further drive extends until the piston-cylinder unit 13 reaches the area of its dead center.
  • the piston-cylinder unit 3 of the further drive has not yet reached its dead center and continues to drive, causing the piston-cylinder unit 13 to overcome its dead center. Then the two piston-cylinder units drive in until the two crane arms reach their end position, the parking position.
  • a control device 20 which causes via the switching device 21, the piston-cylinder unit 13 to perform a reversal of direction of their effective direction. This direction reversal is triggered by the switching valve 22, which acts as a limit switch.
  • Fig. 10 are the two unfolded crane arms of a crane and a switching valve 22 is shown, which causes the control device 20 in the dead center of the piston-cylinder unit 13 to the joint 14 to perform a direction reversal of the effective direction of the piston-cylinder unit 13.
  • a switching valve 22 which causes the control device 20 in the dead center of the piston-cylinder unit 13 to the joint 14 to perform a direction reversal of the effective direction of the piston-cylinder unit 13.
  • a control device 20 which causes via the switching device 21, the piston-cylinder unit 13 to perform a reversal of direction of their effective direction. This direction reversal is triggered by the switching valve 22 (see also Fig. 8 ). Furthermore, the piston-cylinder unit 3 is caused via the switching device 24 to perform a reversal of direction of their effective direction. This direction reversal is triggered by the switching valve 23 (see also Fig. 8 ).
  • a folded Z-crane 1 is shown, consisting of a crane column 2 and two crane arms.
  • the piston-cylinder unit 3 of the further drive is executed in the interior of the first crane arm 11.
  • Fig. 13 also shows a collapsed Z-crane 1 (parking position) in which the piston-cylinder unit 3 of the further drive on the first crane arm 11 is executed on the outside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP10004785.1A 2009-05-07 2010-05-06 Grue dotée d'une capacité à surmonter un point mort Active EP2248753B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201031299A SI2248753T1 (sl) 2009-05-07 2010-05-06 Žerjav, ki lahko premaga mrtvo točko

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0069109A AT508171A1 (de) 2009-05-07 2009-05-07 Kran mit totpunktüberwindung

Publications (2)

Publication Number Publication Date
EP2248753A1 true EP2248753A1 (fr) 2010-11-10
EP2248753B1 EP2248753B1 (fr) 2016-07-06

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ID=42557506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004785.1A Active EP2248753B1 (fr) 2009-05-07 2010-05-06 Grue dotée d'une capacité à surmonter un point mort

Country Status (11)

Country Link
US (1) US8596474B2 (fr)
EP (1) EP2248753B1 (fr)
JP (1) JP5508123B2 (fr)
KR (1) KR20100121426A (fr)
AT (1) AT508171A1 (fr)
BR (1) BRPI1001923A2 (fr)
CA (1) CA2702707C (fr)
ES (1) ES2595983T3 (fr)
PL (1) PL2248753T3 (fr)
RU (1) RU2471702C2 (fr)
SI (1) SI2248753T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103373671A (zh) * 2013-07-23 2013-10-30 徐州重型机械有限公司 伸缩臂及具有该伸缩臂的起重机
WO2018080403A1 (fr) * 2016-10-25 2018-05-03 Tajfun Liv, Proizvodnja In Razvoj D.O.O. Grue pliable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013116632A1 (fr) * 2012-02-02 2013-08-08 United States Of America, As Represented By The Administrator Of The National Aeronautics And Space Administration Manipulateur renforcé par tension et actionné par armature et charnière pour utilisation dans celui-ci
US10569415B2 (en) 2016-08-31 2020-02-25 United States Of America As Represented By The Administrator Of Nasa Tension stiffened and tendon actuated manipulator
CN107628555A (zh) * 2017-11-17 2018-01-26 长沙理工大学 一种卷扬机自动控制的两节折叠输送机
JP7088801B2 (ja) * 2018-09-28 2022-06-21 日立建機株式会社 作業機械

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US4183712A (en) * 1976-12-10 1980-01-15 Hiab-Foco Aktiebolag Device in loading cranes
EP0733585A2 (fr) * 1995-03-24 1996-09-25 Rochus Penz GmbH Kranbau Grue de chargement
EP1475345A1 (fr) * 2003-05-09 2004-11-10 Loglift Oy Ab Procédé pour la commande d'une flèche de grue et dispositif pour la mise en oeuvre du procédé

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Publication number Priority date Publication date Assignee Title
US3533515A (en) * 1968-09-03 1970-10-13 Baker Equipment Eng Co Boom structure for utility trucks and the like
DE6916283U (de) 1969-04-18 1969-09-18 H Weyhausen Kg Maschf Drehgelenkanordnung fuer knickarmausleger
DE1920593A1 (de) * 1969-04-23 1970-11-19 Weyhausen Kg Maschf H Drehgelenkanordnung fuer Knickarmausleger
US4183712A (en) * 1976-12-10 1980-01-15 Hiab-Foco Aktiebolag Device in loading cranes
EP0733585A2 (fr) * 1995-03-24 1996-09-25 Rochus Penz GmbH Kranbau Grue de chargement
EP1475345A1 (fr) * 2003-05-09 2004-11-10 Loglift Oy Ab Procédé pour la commande d'une flèche de grue et dispositif pour la mise en oeuvre du procédé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103373671A (zh) * 2013-07-23 2013-10-30 徐州重型机械有限公司 伸缩臂及具有该伸缩臂的起重机
CN103373671B (zh) * 2013-07-23 2015-07-22 徐州重型机械有限公司 伸缩臂及具有该伸缩臂的起重机
WO2018080403A1 (fr) * 2016-10-25 2018-05-03 Tajfun Liv, Proizvodnja In Razvoj D.O.O. Grue pliable

Also Published As

Publication number Publication date
KR20100121426A (ko) 2010-11-17
US8596474B2 (en) 2013-12-03
US20100282702A1 (en) 2010-11-11
RU2010118314A (ru) 2011-11-20
PL2248753T3 (pl) 2017-02-28
AT508171A1 (de) 2010-11-15
CA2702707C (fr) 2013-11-26
JP5508123B2 (ja) 2014-05-28
JP2010260724A (ja) 2010-11-18
EP2248753B1 (fr) 2016-07-06
ES2595983T3 (es) 2017-01-04
RU2471702C2 (ru) 2013-01-10
BRPI1001923A2 (pt) 2014-02-11
SI2248753T1 (sl) 2016-11-30
CA2702707A1 (fr) 2010-11-07

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