EP2522618B1 - Verfahren zur Montage eines Mobilkrans sowie Mobilkran - Google Patents

Verfahren zur Montage eines Mobilkrans sowie Mobilkran Download PDF

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Publication number
EP2522618B1
EP2522618B1 EP12003563.9A EP12003563A EP2522618B1 EP 2522618 B1 EP2522618 B1 EP 2522618B1 EP 12003563 A EP12003563 A EP 12003563A EP 2522618 B1 EP2522618 B1 EP 2522618B1
Authority
EP
European Patent Office
Prior art keywords
boom
main boom
crane
mobile crane
extension
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.)
Active
Application number
EP12003563.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2522618A1 (de
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
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Publication of EP2522618A1 publication Critical patent/EP2522618A1/de
Application granted granted Critical
Publication of EP2522618B1 publication Critical patent/EP2522618B1/de
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
    • B66C23/70—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
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/365—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes dismantable into smaller units for transport purposes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49616—Structural member making

Definitions

  • the invention relates to a method for mounting a mobile crane, in particular a telescopic crane, on a construction site, with a main boom and with at least one boom extension.
  • lattice pieces are regularly assembled into a tiltable or fixed luffing jib and mounted on the telescopic main boom of the telescopic crane.
  • the individual lattice pieces are transported separately to the site and mounted on the crane boom after arrival at the site.
  • auxiliary equipment such as an auxiliary crane are absolutely necessary.
  • An optimal utilization of the transport volume of the lattice pieces is usually ensured by suitable transport systems that allow the common transport of heavy ballast pieces with the individual lattice pieces.
  • the object of the present invention is now to show a method for assembling a crane at the site, which is not only less expensive, but also easier and less time consuming.
  • the object is achieved by a method for assembling a mobile crane having the features of claim 1. More specifically, the method relates to the assembly of a boom extension consisting of at least one lattice piece on the main boom of the mobile crane, which is designed in particular as a mobile telescopic crane.
  • the method according to the invention therefore proposes roughly aligning the main boom and at least one lattice piece of the boom extension by moving the means of transport or the mobile crane and bringing it into the assembly position. Following the main boom and the lattice piece via one or more traction means are interconnected. The one or more traction means are then acted upon by the teetering of the main boom with a certain train.
  • this raises the boom extension to be mounted from the loading area of the means of transport and the axes of the connection points of the Gitterstü ckes or the boom extension are also aligned horizontally.
  • the axes of the joints of the main boom and the boom extension are at least partially parallel to each other and aligned horizontally, which allows the pairing, in particular the bolting of the joints.
  • the rocking of the main boom takes place for example via the rocker drive, in particular via the luffing cylinder.
  • At least one boom extension may be a main boom extension or a luffing jib.
  • the boom extension may preferably consist of several lattice pieces, which are successively mounted on the main boom.
  • the jib extensions are pre-assembled ready for use, i. These are preferably pre-set in a largely workable state.
  • the inventive method must therefore be performed only once for mounting a boom extension for attaching the end-side lattice piece of pre-assembled from several pieces of lattice extension for mounting a boom extension.
  • At least one preassembled jib extension is transported separately to the mobile crane by means of a means of transport to the place of use.
  • the transport for the at least one jib extension is preferably a semi-trailer or a low loader.
  • One or more preassembled jib extensions are preferably held by a suitable device of the transport in a suitable position for transport and for subsequent mounting on the mobile crane position on the transport.
  • the boom extension required is determined.
  • the corresponding boom combination is broken down into individual jib extensions, which are moved with the help of the transport vehicle to the site.
  • the corresponding boom combination is then achieved by the successive assembly of the individual boom extensions on the mobile crane.
  • the complete boom combination can be pre-assembled be transported to the site and be mounted as a whole by a single assembly operation on the mobile crane.
  • the inventive method opens up a possibility for a mobile crane for the independent assembly of at least one lattice piece or a boom extension on its main boom.
  • a costly auxiliary crane is therefore no longer needed.
  • the self-assembly of the boom extension is made possible by the use of the traction device according to the invention.
  • the mobile crane is already connected for its self-assembly with its necessary ballast and its main boom.
  • the mobile crane For self-assembly of the lattice piece or boom extension, i. for attaching the traction means, the mobile crane is brought into the mounting position.
  • the main boom of the mobile crane is tapped using the rocker cylinder in an approximately horizontal position to bring the joints of the main boom in the region of the joints of the mounted on the transport lattice piece or the boom extension and make the connection by means of one or more traction means to be able to.
  • the telescoping cylinder of the main boom is this maximum allowed to run on block to achieve the optimum mounting position for the connection between the lattice piece / boom extension and main boom.
  • Possible here is a head-side inclination of the main boom by about 1 ° or more relative to the horizontal. The inclination causes the headboard joints of the main boom to be below the jib extension junctions, which simplifies the subsequent connection process.
  • an inclination of the longitudinal axis of the main boom is limited to approximately 1 ° to a maximum of 2 ° below the horizontal. If the possible angle of inclination of the rocker drive for the assembly process is insufficient, so in a preferred embodiment, the inclination of the main boom can be increased by adjusting the adjustable axle suspension and / or crane support of the mobile crane. As a result, an additional head-side inclination of the main boom longitudinal axis relative to the horizontal of about 1 ° or more can be achieved.
  • the adjustable axle suspension is first of all almost completely drained off, which makes possible an overall very low and therefore easily accessible working height for the subsequent connection process between boom extension and main boom.
  • the crankshaft necessary inclination of the main boom longitudinal axis is set in the connection via the crane support. Appropriately, an inclined to the horizontal orientation of the main boom longitudinal axis and a horizontally oriented main boom transverse axis.
  • the longitudinal axes of main boom and lattice / boom extension can be laid by turning the crane truck onto a common vertical plane.
  • main boom and lattice piece are aligned by moving the transport means and / or the mobile crane to each other.
  • a coverage of the joints of main boom and lattice piece is achieved.
  • the upper ends of the tensioned traction means move on circular paths. Following the connection means, in particular connecting bolts, can be plugged.
  • the length of the traction means is specially adapted to the lattice geometry.
  • the elongation of the traction means or before the Aufwippvorgang is adjusted accordingly to ensure optimum alignment of the connecting axes.
  • the connecting line of at least one traction means preferably extends from the main boom area located at the top in the horizontal position to the lower area of the boom widening.
  • the articulation points of the traction means on the boom extension or the main boom are in the vicinity of the respective connection points or Verbolzstellen whose access is not affected by the traction means.
  • the dismantling of the mobile crane is expediently carried out by reversing the execution sequence of the method steps.
  • the invention is further directed to a mobile crane with a main boom and with at least one boom extension consisting of at least one lattice piece.
  • the invention relates to a mobile crane with telescopic boom.
  • the mobile crane is designed with appropriate means for carrying out the method according to the invention.
  • the mobile crane thus has the same advantages and details as the above-described advantageous embodiments of the method according to the invention, which is why a further explanation is omitted here.
  • a possible embodiment of the mobile crane provides that at least one traction means is a rope or a chain or a folding rod.
  • the combination of the proposed elements to a traction means is conceivable. It is also conceivable that individual elements are connected one behind the other and / or parallel to each other to form a traction means.
  • a traction device can therefore have one or more Link points with the main boom and / or the boom extension in conjunction.
  • At least one traction means is designed to be adjustable in length in order to ensure optimum adaptation to the grid geometry used of the boom extension and the main boom of the mobile crane.
  • At least one boom extension is a main boom extension. Also possible is a boom combination of the listed boom extensions.
  • the required boom combination for a telescopic mobile crane is specified.
  • one or more jib extensions are to be mounted on the main jib tip to equip the crane for the planned crane work.
  • the corresponding jib extensions consist of individual lattice pieces 1, 1 a, 1 b, 1 c, 1 ', 1 a', 1 b ', 1 c', which were already combined with each other before transport to the site and placed in a largely workable state.
  • Possible preassembled jib extensions are, for example, a main jib extension or a fixed or rocking jib.
  • the individual boom extensions 2, 2 'disassembled complete boom combination is in the center of a crane existing there on the in FIG. 1 loaded transport vehicle 3 loaded and moved to the site.
  • the crane 6 For mounting the jib extension 2, 2 ', the crane 6 is brought into the appropriate mounting position.
  • the transport vehicle 3, which has loaded the main boom extension 2, is thereby positioned relative to the mobile crane, that the extension 2 and the main boom 5 are on a common axis and the Verbolzstellen required for the preparation of the compound are mutually approximated.
  • the inclination can be further increased by targeted control of the axle suspension and possibly the crane support 27.
  • the mobile crane 6 is first drained via the adjustable axle suspension to allow the lowest possible working height. Following the mobile crane 6 is supported by its support 27.
  • the front pair 27a of the support 27 is further extended relative to the rear pair 27b to adjust the desired inclination of the mobile crane 6 and the main boom longitudinal axis by the angle 30.
  • This makes possible an additional inclination of the crane by about 1 ° with respect to the horizontal.
  • the corresponding pairs 27a, 27b of the crane support 27 are extended in such a way in order to align the crane transverse axis horizontally. If necessary, unevenness of the soil must be taken into account.
  • the final connection between main boom 5 and boom extension 2 is in the corresponding description section of the FIG. 4 be explained in more detail.
  • FIG. 3 shows the mobile crane with the already mounted on the main boom 5 boom extension 2 in the mounting position for receiving the mounted on the transport vehicle 3 rocker luffing jib 2 ', before the transport of the lattice pieces 1', 1 a ', 1 b', 1 c ' was composed.
  • the boom combination of main boom 5 and boom extension 2 as described above is tapped off in the horizontal.
  • Farther Mobile Crane 6 and transport vehicle 3 are positioned so that the longitudinal axes of the luffing jib 2 'and the already assembled boom combination are on a common axis and the joints are mutually approximated.
  • the inclination of the mobile crane 6 causes the joints 20, 20 ', 21, 21' of the boom extension 2 below the joints 22, 22 ', 23, 23' of the lintel 2 'lie.
  • FIG. 4a shows the two lattice pieces 1 ', 1 c in a side view, wherein the connection points 20, 20', 21, 21 'of the boom extension 2 due to the Kranschräg ein by the angle 30 below the connection points 22, 22', 23, 23 'of the jib 2 ' lie.
  • the traction means 24, 24 ' accordinging to the invention are connected to the grating pieces 1', 1c.
  • the respective articulation points of the traction means 24, 24 ' are in the vicinity of the Verbolzstellen 20, 20' and 23, 23 'and therefore extend obliquely from the overhead region of the lattice piece 1c to the underlying portion of the lattice piece 1'. Access to the Verbolzstellen 20, 20 ', 23, 23' remains unaffected by the attachment of the traction means 24, 24 '.
  • FIG. 4b shows a plan view of the relevant end lattice pieces 1 ', 1 c of the boom extension 2 and the jib 2'.
  • the main boom 5 is slightly tipped over the luffing cylinder 25 in order to generate a tension in the traction means 24, 24' (side view Figure 4c ). Subsequently, the upper carriage is still rotated to place the longitudinal axes of the main boom 5 and the boom extension 2 in a vertical plane.
  • the main boom is erected until the luffing jib 2 'lifts off the back of the transport vehicle 3 and its transverse axis is aligned completely horizontally.
  • the bolt axis of the Verbolzstellen 22, 22 ', 23, 23' also extends horizontally. Since the transverse axis of the main boom 5 and the boom extension 2 has already been aligned horizontally via the support 27, consequently, all bolt axes of the connection points 20, 20 ', 21, 21', 22, 22 ', 23, 23' parallel and horizontal.
  • the boom extensions 2, 2 'to be connected are moved toward each other until the bolting points 20, 20', 21, 21 'are paired with the bolting points 22, 22', 23, 23 'and the bolts 26 which are removed from the transport position have been, can be plugged (side view FIG. 4d ). Since the luffing jib 2 'is raised sufficiently, the described radius of circle along the pulling means 24, 24' does not have an effect.
  • the merging movement can be effected both by the telescoping cylinder of the main boom 5 and by moving the transport vehicle 3 or the mobile crane 6. Finally, the main boom 5 is tilted up with the boom extensions 2, 2 'mounted and the transport vehicle 3 is moved out of the danger zone.
  • FIG. 4 show the chronological process steps for the connection between the boom extension 2 and the luffing jib 2 '.
  • the method steps described can be analogous to the assembly of the boom extension 2 on the main boom 5, starting from the mounting position of FIG. 2 apply.
  • the basic idea according to the invention can also readily be applied to the mutual assembly of any boom combinations.
  • FIG. 5 maps the chronological order of the individual process steps A, B, C, D.
  • the individual process steps should be considered again.
  • the two grating pieces 1c, 1 ' are roughly aligned with each other by moving the mobile crane or the transport means 3, ie the main boom is tipped off and thereby inclined by a defined angle below the horizontal. In this position, the traction means can be attached. Both lattice pieces 1c, 1 'occupy the position sketched in row A, columns 100, 110, 120. Of the FIG. 5 it can be seen that the lattice piece 1 'is rotated about its longitudinal axis to the lattice piece 1 c.
  • the twisted position of the lattice piece 1 'about its longitudinal axis is remedied by luffing the main boom.
  • the traction means placed under tension cause the lattice piece 1 'to align with the lattice piece 1c and the connecting axes are likewise aligned horizontally, as can be seen from the views of row B.
  • an overlap of the Verbolzstellen is erriecht so that the connecting bolts can be plugged (line D).
  • the disassembly of the boom extensions 2, 2 ' takes place by reversing the method steps described above.
  • the main advantage of the invention Method or of the mobile crane 6 is justified by the fact that the required effort for the production of the working or transport condition of the crane 6 is significantly reduced. In particular, the necessary time required for the setup process can be shortened, which has a particularly positive effect on the operating costs incurred.
  • the assembled and workable boom extensions 2, 2 ' can be transported immediately after the crane operation to the next site and used there on the nearest mobile crane.
  • several different jib extensions can be connected to each other after they have been separated from the first connection established.
  • FIG. 6 Possible embodiments of the traction means 24, 24 'are in the FIG. 6 outlined.
  • the sketch 6a shows the parallel traction means 24, 24 ', as in the concrete embodiment of the FIGS. 1 to 5 have been used and described in detail.
  • the individual traction means 24, 24 ', 34, 44 consist either of one or more ropes, chains or folding rods, which are optionally made adjustable in length. Under certain circumstances, a single traction means 24, 24 ', 34, 44 also consist of a linked combination of one or more ropes, chains or folding rods.
EP12003563.9A 2011-05-09 2012-05-07 Verfahren zur Montage eines Mobilkrans sowie Mobilkran Active EP2522618B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011122812A DE102011122812A1 (de) 2011-05-09 2011-05-09 Verfahren zur Montage eines Mobilkrans sowie Mobilkran

Publications (2)

Publication Number Publication Date
EP2522618A1 EP2522618A1 (de) 2012-11-14
EP2522618B1 true EP2522618B1 (de) 2017-01-11

Family

ID=46146557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12003563.9A Active EP2522618B1 (de) 2011-05-09 2012-05-07 Verfahren zur Montage eines Mobilkrans sowie Mobilkran

Country Status (4)

Country Link
US (1) US9102506B2 (zh)
EP (1) EP2522618B1 (zh)
CN (1) CN102774756B (zh)
DE (1) DE102011122812A1 (zh)

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DE102013006259A1 (de) * 2013-04-11 2014-10-16 Liebherr-Werk Ehingen Gmbh Teleskopausleger und Kran
JP6366227B2 (ja) * 2013-06-03 2018-08-01 株式会社タダノ ジブの着脱機構
CN104512818A (zh) * 2014-12-19 2015-04-15 徐州建机工程机械有限公司 一种用于安装塔式起重机的辅助装置
CN105439011B (zh) * 2015-12-25 2017-06-13 同济大学 用于臂架式起重机的自组装装置及其使用方法
US10873511B2 (en) 2016-11-22 2020-12-22 Airwatch Llc Management service migration for managed devices
CN107140558B (zh) * 2017-06-22 2018-10-19 广东精铟海洋工程股份有限公司 一种高强度的海上吊臂及使用其的起重机
CN107161886B (zh) * 2017-07-17 2019-10-25 徐州重型机械有限公司 起重机的副臂自安装方法、自拆卸方法和自拆装系统

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Also Published As

Publication number Publication date
US9102506B2 (en) 2015-08-11
CN102774756A (zh) 2012-11-14
DE102011122812A1 (de) 2012-11-15
CN102774756B (zh) 2016-08-03
US20140027398A1 (en) 2014-01-30
EP2522618A1 (de) 2012-11-14

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