CN101638207B - The telescopic hoist boom of hoisting crane and the method for it being reinforced by vang - Google Patents
The telescopic hoist boom of hoisting crane and the method for it being reinforced by vang Download PDFInfo
- Publication number
- CN101638207B CN101638207B CN200910165557.XA CN200910165557A CN101638207B CN 101638207 B CN101638207 B CN 101638207B CN 200910165557 A CN200910165557 A CN 200910165557A CN 101638207 B CN101638207 B CN 101638207B
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- vang
- rope
- capstan winch
- cylinder
- hoist boom
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Classifications
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- 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
- B66C23/66—Outer or upper end constructions
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention relates to a kind of telescopic hoist boom of hoisting crane, this telescopic hoist boom have hinge segment, can from the outwardly directed telescopic section of hinge segment and the vang for telescopic hoist boom, this vang mainly comprises two vang supports.According to the present invention, arrange the capstan winch for holding vang rope at the free end of vang support, in vang support, wherein arrange the vang cylinder being used for being reinforced vang rope definitely by vang, the free end of vang rope is fixed on vang cylinder.The invention still further relates to a kind of method for being reinforced telescopic hoist boom by vang.
Description
Technical field
The present invention relates to a kind of telescopic hoist boom of hoisting crane, and for being reinforced the method for this telescopic hoist boom by vang.
Background technology
In order to improve the load of hoisting crane, knownly on arm or after arm, load onto vang.In order to improve load further, three-dimensional vang is set.To the vang of this solid it is advantageous that the arm of hoisting crane does not depart from or only seldom departs from pitch plane.This departing from such as by wind load or one-sided can shine upon initiation.
This hoisting crane is such as by disclosed in DE20208740U1.Telescopic hoist boom is this carrying two vang supports descending V-arrangement to open in working order (Abspannst ü tzen), and vang support is connected with the vang rope launched from vang support at its free end stretched out.When telescopic hoist boom stretches out and after correspondingly holding up vang support, vang rope is extracted out by the end from vang support.If telescopic hoist boom will arrive the extension elongation selected in advance, the vang rope of corresponding length must be fixed on vang support.
It is necessary that two vang ropes of space vang have identical length.The power of being born by vang rope is secondary.When the vang rope of stretching equal length, telescopic hoist boom is placed in relative to the best midway location (Mittelstellung) of the static state of pitch plane.The reason that arm departs from this desirable midway location may be such as shine upon or act on the wind-force on telescopic hoist boom.
Summary of the invention
Task of the present invention is, allows large telescopic hoist boom to be reinforced by vang, wherein ensures that the vang rope of vang has identical length, thus can bear produced large power equably.In the case, ensure that and reinforce condition more reliably and all reach at any time and reproducibly regulate by vang.
According to the present invention, a kind of telescopic hoist boom is utilized to realize this task.According to the present invention, a kind of telescopic hoist boom of hoisting crane is provided, this telescopic hoist boom has hinge segment, can from the outwardly directed telescopic section of this hinge segment and the vang for telescopic hoist boom, be bearing in two vang supports on one of them section, respectively by vang rope and the control apparatus that at least one shakes for making vang support of vang bracket supports, in this telescopic hoist boom, at the free end of vang support, the capstan winch for holding vang rope is set, the vang cylinder being used for being reinforced vang rope definitely by vang is wherein set in vang support, the free end of vang rope is fixed on vang cylinder, the reinforcing that described vang rope carries out is based on length monitoring device.
Utilize the present invention, eliminate and up to the present commonly introduce telescopic hoist boom vang by what determine by vang reinforcement edge.According to being present in this solution, from vang rope measured length really.Compared with the situation of carrying out pulling according to old principle, by the solution route that this is new, arm can obviously be pulled more directly.If pulled by identical power as in the past common, then bending state straightend it would be better to say that frozen.In contrast, if pull in both sides accordingly with the present invention until vang rope measured length is identical really, then telescopic hoist boom almost linearly runs.In the case, the power adopted when pulling can be very different.
In the case, so should determine the maximum functional power of vang cylinder, the power can transmitted by rope can be made full use of.Arm can all be pulled by straight in almost all cases thus.
The preferred disposition of this telescopic hoist boom by with hereinafter draw.
In addition the present invention relates to a kind of hoisting crane with above-mentioned telescopic hoist boom.Finally, the invention still further relates to a kind of method for being reinforced described telescopic hoist boom by vang.
Accompanying drawing explanation
Other features of the present invention, details and advantage will be further illustrated below according to illustrated embodiment in accompanying drawing.Accompanying drawing illustrates:
Fig. 1-4 illustrates the schematic diagram according to the telescopic hoist boom in different operating position of the present invention;
Fig. 5 illustrates the vang support according to telescopic hoist boom of the present invention;
Fig. 6 illustrates and to be installed under the state on telescopic hoist boom and under folding (anklappen) and the V-arrangement state of opening according to the vang support of Fig. 5; And
Fig. 7-11 illustrates the CONSTRUCTED SPECIFICATION according to device of the present invention.
Detailed description of the invention
According to Fig. 1 to 4, basic structure according to telescopic hoist boom of the present invention and principle of work thereof can be described.
Fig. 1 show have hinge segment 12 and multiple can the telescopic hoist boom 10 of outwardly directed telescopic section 14.Telescopic hoist boom 10 has vang 16, this vang 16 mainly has two can be hinged on vang support 18 in hinge segment 12 by V-arrangement in the case with opening, wherein be provided with the vang rope 20 supported by vang support 18 separately, vang rope 20 is rolled by the capstan winch 22 be arranged on the free end of vang support 18 or is launched, and wherein vang rope 20 extends to the end of the vang cylinder 30 be arranged in vang support 18 respectively by the first slewing rollers 26 be arranged on the head 24 of telescopic hoist boom and the slewing rollers 28 be arranged on vang support 18.Be furnished with engageable ratchet 34 in region periphery with the capstan winch 22 of teeth portion 32, this ratchet 34 is correspondingly being engaged on fixing of causing the shape of capstan winch to limit after between tooth 32.
In addition, also in vang cylinder region, arrange a ratchet 36 separately, these ratchets 36 can engage (umgreifen) vang cylinder (see Fig. 3) in its end shape matching.Illustrating with 38 can the vang bar of vang support 18 that opens of V-arrangement.
The principle of work of the novel vang of telescopic hoist boom can be described according to Fig. 1 to 4.Fig. 1 shows vang support (Abspannbock) and utilizes its two vang supports 18 to be arranged on telescopic hoist boom 10 and readyly by the initial condition of holding up.Desired V-arrangement also realizes (can't see in the accompanying drawings) at this.From the position according to Fig. 1, telescopic hoist boom 10 is by the length (direction of arrow according to Fig. 3) extended outward to desired by it.In the case, during vang rope 20 launches, respective capstan winch 22 is released.In order to prevent lax rope such as is illustrated in figs. 2 and 3, capstan winch 22 also can be subjected to antagonistic force, and this such as can be realized by safety valve.
As long as reach the length of desired telescopic hoist boom 10, telescopic section is just connected by bolt.This makes it possible to realize the original vang program of telescopic hoist boom 10.For these two vang cylinders 30 are retracted first completely.Following flow process is carried out when being reinforced by vang:
-vang cylinder is stretched out (Fig. 2),
-simultaneously capstan winch roll (after drg is opened), until arrived assigned position informed by rotary encoder (Drehgeber),
-make capstan winch and cylinder stop motion,
-ratchet 34 is closed.Wait for, until no longer send the signal (Fig. 3) of " ratchet is opened ",
-capstan winch is unfolded again, until proximity switch 76 informs the regulation number of teeth by responser (Transponder) 72.This is necessary, makes ratchet 34 engage completely (angle of rotation 78 in Fig. 7) thus.Correct signal must be come from the both sides of capstan winch tip edge.
-now first retraction vang cylinder 30 and increase its power.It is advantageous that the vang cylinder 30 first making beginning stretch out further is retracted.
The assigned position matched with length of boom delivered to by capstan winch on each vang support also controlled device.Thus, each bar vang rope 20 is with the power tensioning determined.
After reaching desired position, capstan winch 22 is by ratchet 34 fixing (see Fig. 3).In the case, ensure to block, it is always engaged when such as not having power because of fault.Just illustrate in figure 3 between tooth 32 that how ratchet to snap on capstan winch 22 periphery.In the diagram, ratchet is fixed from now on.After correspondingly fixing capstan winch, vang cylinder 30 is retracted.Vang cylinder has length at this by limit switch and monitors and position supervision.Length monitors the synchronously gratifying of two vang cylinders 30 in concern two vang supports.After the final position that arrival limit switch monitors, in hoisting crane, existing control setup closes ratchet 36, thus carries out power transmission with starting form fit therefrom.In the case, it is advantageous that the detent positions of closing can be monitored.Monitoring data can for control setup.For security reasons, ratchet always can be closed when such as not having power because of fault.
Further details is drawn by Fig. 5 to 11.
In Fig. 5, independent (this means do not have telescopic hoist boom) illustrates two vang supports 18 in a folded configuration.Vang support 18 has capstan winch 22 and corresponding slewing rollers 28 at its end bearing.By holding up cylinder 50 accordingly and regulating cylinder 52, vang support 18 can hold up V-arrangement deployed position (see Fig. 6) from this graphic folding position.Vang rope 20 is cut in a pulley 54 respectively.Transport is indicated with 58.Crossbeam 60 is arranged between two vang supports 18.Vang cylinder 30 can be seen in vang support 18 inside.In figure 6, illustrate on the one hand in folding position, open the vang support 18 of (aufklappen) position on the other hand at corresponding V-arrangement.The V-arrangement position of opening, it is additionally fixed by vang bar 38 or vang rope.Position illustrated in Fig. 6, each telescopic section of telescopic hoist boom 10 is also not protruding.
Illustrate the details of Fig. 6 in figs. 8 and 9.Particularly show the detent mechanism for fixing capstan winch 22 in fig. 8.Show capstan winch rotary encoder 70 in fig .9.By this capstan winch rotary encoder, the actual position of capstan winch and the tensioning state of vang rope are determined.Except there is no the numerical value of capstan winch rotary encoder stored in further graphic control setup at this except, detect capstan winch position by the responser 72 be arranged in the teeth portion 32 (see Fig. 8) of capstan winch 22.The number of teeth distributing to respective responser is read by coil pickup 74, and this number of teeth is used for the tooth identification of tooth 1 to 24.This coil pickup is correctly located by spotting device 66.Show corresponding ratchet with 78 and 78 ', these ratchets are by joining fixing capstan winch 22 between teeth portion 32 to.The diagram of ratchet 78 shows the position of opening, and the diagram of ratchet 78 ' shows the position snapped in, and snaps in position at this, and capstan winch 22 is fixed by form fit.Ratchet 78 or 78 ' position determined by coil pickup 74 equally.
Also be provided with photographic surveillance device 80 as additional monitor unit.Because accurately equal rope lengths is important for the use of space vang, the winding quality on capstan winch 22 must be monitored.There is the monitor unit of photographic camera 80 for this object.The image of each capstan winch utilizing it to receive is shown to hoisting crane chaufeur in hoisting box.In hoisting box, hoisting crane chaufeur just can monitor winding quality.Two little telltales such as can be set for this reason.Existing telltale also may be used for this object.Independent of the observation undertaken by hoisting crane chaufeur, image comparison can also be carried out by image recognition software at this.In addition, the corresponding pawl teeth 32 of numeral can also be provided with.These numerals can be positioned at the viewing area of photographic camera.Thus, when the number of pawls being suitable for (zutreffend) is shown to hoisting crane chaufeur by control setup, he can check correct number of pawls.
The last brake equipment 82 that also show in fig. 8 for ratchet 78, this brake equipment 82 is for being limited to open position by ratchet 78.
The view of capstan winch 22 is from the side obtained by Fig. 7.In this case each pawl teeth 32 distributes tooth 1 to 24.The responser 72 with affiliated numerical information is processed with in each pawl teeth.Responser is read by proximity switch 76, and when identifying certain responser by actuator 84 engagement pawl 78.
Show the details of vang cylinder 30 in figures 10 and 11.Then illustrate length decoder in fig .9
90 and limit switch 92.Whether limit switch 92 is opened (see Figure 10) for showing corresponding detent 36 or closes (see Figure 10).Whether vang cylinder 30 is positioned at the final position of its retraction to utilize limit switch 94 to determine.
Claims (22)
1. the telescopic hoist boom of a hoisting crane, have hinge segment, can from the outwardly directed telescopic section of described hinge segment and the vang for described telescopic hoist boom, described vang have two vang supports on one that is bearing in described hinge segment and described telescopic section, respectively by described vang stent support vang rope and at least one is for swinging the control apparatus of described vang support
It is characterized in that,
Described vang support is provided with the capstan winch for holding described vang rope, and the vang cylinder being used for vang rope described in tensioning is definitely set in described vang support, the free end of described vang rope is fixed on described vang cylinder, the reinforcing that described vang rope carries out is based on length monitoring device, described vang cylinder has length monitoring device and position monitoring apparatus by limit switch, wherein said length monitoring device pays close attention to the synchronously gratifying of two vang cylinders in two vang supports, and utilize limit switch determination vang cylinder whether to be positioned at the final position of its retraction by means of position monitoring apparatus, wherein said vang cylinder energy form fit ground is fixed on its final position by ratchet and the detent positions of closing is monitored, wherein said ratchet always can be closed when not having power.
2. telescopic hoist boom as claimed in claim 1, it is characterized in that, the described winch arrangement for holding described vang rope is at the free end of described vang support.
3. telescopic hoist boom as claimed in claim 1 or 2, is characterized in that, the transporting position that described two vang supports can be folding substantially parallel from described hinge segment and described telescopic section swings to the control position holded up.
4. telescopic hoist boom as claimed in claim 1 or 2, is characterized in that, described capstan winch has can respectively by the outer toothed portion of ratchet locking.
5. telescopic hoist boom as claimed in claim 4, it is characterized in that, described capstan winch has the responser in capstan winch rotary encoder and/or multiple teeth portion be arranged on described capstan winch external diameter.
6. telescopic hoist boom as claimed in claim 1, it is characterized in that, described length monitoring device and/or described position monitoring device are made up of limit switch.
7. telescopic hoist boom as claimed in claim 1, it is characterized in that, all monitor signals can be sent to control setup.
8. telescopic hoist boom as claimed in claim 1 or 2, it is characterized in that, the monitoring device for the winding quality of monitoring described vang rope is arranged on corresponding capstan winch.
9. telescopic hoist boom as claimed in claim 8, it is characterized in that, described monitoring device comprises optical monitoring device.
10. telescopic hoist boom as claimed in claim 9, it is characterized in that, described monitoring device comprises photograph monitoring device.
11. telescopic hoist booms as claimed in claim 1 or 2, is characterized in that, arm end and vang support are provided with the slewing rollers for described vang rope, and described vang support comprises two vang supports.
12. 1 kinds of hoisting cranes, have as the telescopic hoist boom in claim 1 to 11 as described in any one.
13. hoisting cranes as claimed in claim 12, it is characterized in that, described hoisting crane is carriage jack.
14. 1 kinds for reinforcing the method as the telescopic hoist boom in claim 1 to 11 as described in any one by vang, it is characterized in that, telescopic section stretch out stretch out with vang support time, each capstan winch on each vang support is moved to the assigned position matched with length of boom, retracted so that tensioning vang rope by the vang cylinder that two initial when vang rope loosens are stretched out completely, and be connected with vang support with making its form fit after its final position of arrival, each corresponding vang rope tensioning definitely thus, described vang support comprises two vang supports.
15. methods as claimed in claim 14, is characterized in that, extend outward to its desired length at arm during, each capstan winch on vang support is released, and vang rope can be pulled open from described capstan winch thus.
16. methods as claimed in claim 15, is characterized in that, in order to prevent line relaxation, described capstan winch always to be reeled each vang rope by little power.
17., as the method in claim 14 to 16 as described in any one, is characterized in that, during the tensioning process of described vang cylinder, described vang cylinder is by length monitoring device and the position monitoring device monitoring utilizing limit switch.
18., as the method in claim 14 to 16 as described in any one, is characterized in that, are wound up into period on capstan winch at vang rope, monitoring winding quality.
19. 1 kinds of methods for the actual position of capstan winch described in any one in test right requirement 1 to 11, wherein said actual position is by capstan winch rotary encoder and additionally by the responser display in multiple teeth portion being contained in capstan winch external diameter, and wherein these numerical value are sent to crane controller further.
20. methods as claimed in claim 19, is characterized in that, during the tensioning process of described vang cylinder, described vang cylinder is by length monitoring device and the position monitoring device monitoring utilizing limit switch.
21. methods as claimed in claim 20, it is characterized in that, apply pressure to two vang cylinders simultaneously, and when offseting excessive in the single motion determining described vang cylinder, make up to the present to move more lentamente through that vang cylinder of more multichannel journey, enable another vang cylinder make up path length difference thus.
22., as the method in claim 19 to 21 as described in any one, is characterized in that, are wound up into period on capstan winch at vang rope, monitoring winding quality.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008035583.6 | 2008-07-30 | ||
| DE102008035583A DE102008035583A1 (en) | 2008-07-30 | 2008-07-30 | Telescopic boom for crane i.e. mobile crane, has anchoring cylinders arranged in support braces for defined anchoring of suspension rope, where free ends of suspension rope are fastened to anchoring cylinders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101638207A CN101638207A (en) | 2010-02-03 |
| CN101638207B true CN101638207B (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910165557.XA Active CN101638207B (en) | 2008-07-30 | 2009-07-30 | The telescopic hoist boom of hoisting crane and the method for it being reinforced by vang |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101638207B (en) |
| DE (1) | DE102008035583A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009048846A1 (en) | 2009-10-09 | 2011-04-21 | Liebherr-Werk Ehingen Gmbh | crane |
| DE102010020016B4 (en) | 2010-05-10 | 2021-04-29 | Liebherr-Werk Ehingen Gmbh | Crane and method of erecting the crane |
| CN102464269B (en) * | 2010-11-09 | 2013-10-23 | 徐州重型机械有限公司 | Telescopic-arm crane and superlift angle automatic shifting apparatus |
| CN102633190B (en) * | 2012-04-19 | 2013-12-25 | 中联重科股份有限公司 | Super-lift system, engineering machinery, control method and control device for super-lift system |
| CN102701086A (en) * | 2012-06-18 | 2012-10-03 | 上海三一科技有限公司 | Method and device for improving lateral load capacity of arm support, and crane |
| CN102701085B (en) * | 2012-06-20 | 2014-07-16 | 徐州重型机械有限公司 | Hoisting device and crane |
| CN102815567A (en) * | 2012-08-21 | 2012-12-12 | 广东万联包装机械有限公司 | Base paper frame capable of aligning automatically and automatic aligning control method thereof |
| US10329130B2 (en) * | 2013-11-05 | 2019-06-25 | Hyster-Yale Group, Inc. | Lift chain tension relieving devices and methods |
| DE102015002626A1 (en) | 2015-03-03 | 2016-09-08 | Liebherr-Werk Ehingen Gmbh | Telescopic boom of a crane and method for its bracing, as well as for erecting telescopic extensions |
| DE102016003897B4 (en) * | 2016-03-31 | 2021-05-12 | Liebherr-Werk Ehingen Gmbh | Procedure for relieving the main boom of a crane and crane |
| DE102017000009A1 (en) * | 2017-01-02 | 2018-07-05 | Liebherr-Werk Ehingen Gmbh | Jig for a jib of a crane |
| DE102017120679A1 (en) | 2017-09-07 | 2019-03-07 | Liebherr-Components Biberach Gmbh | Guy winch, guying fixture for demounting a crane jib with such guy winch and method for unclamping the jib of a crane |
| CN107697806B (en) * | 2017-11-27 | 2024-03-26 | 湖南鑫创源科技有限公司 | Boom crane spouts wet system |
| DE102018102423A1 (en) | 2018-02-02 | 2019-08-08 | Liebherr-Components Biberach Gmbh | Guy winch, guying fixture for demounting a crane jib with such guy winch and method for unclamping the jib of a crane |
| DE102020110481B3 (en) * | 2020-04-17 | 2021-08-12 | Tadano Demag Gmbh | Induction sensor arrangement of a safety and locking unit of a telescopic boom of a vehicle crane |
| CN114436139B (en) * | 2022-04-11 | 2022-06-14 | 库珀新能源股份有限公司 | Safe type cantilever loop wheel machine |
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| EP0779236A1 (en) * | 1995-12-12 | 1997-06-18 | Liebherr-Werk Ehingen GmbH | Mobile crane |
| CN1209090A (en) * | 1995-12-15 | 1999-02-24 | 固特异轮胎和橡胶公司 | Method and apparatus of producing belts with precise cord length and tension |
| DE20002179U1 (en) * | 2000-02-08 | 2000-08-03 | Liebherr Werk Ehingen | Mobile crane |
| DE102005049606A1 (en) * | 2005-10-17 | 2007-04-19 | Liebherr-Werk Ehingen Gmbh | Crane vehicle for assembling wind turbines in wind farm, has connector arranged between telescopic jib and auxiliary jib, where auxiliary jib is pivotable around rotary axis of connector and is designed as lattice mast |
| DE202007008990U1 (en) * | 2007-06-27 | 2008-11-06 | Liebherr-Werk Ehingen Gmbh | Telescopic boom of a crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10022600B4 (en) * | 1999-06-28 | 2007-09-27 | Terex-Demag Gmbh & Co. Kg | telescopic crane |
| DE10223449B4 (en) * | 2002-05-23 | 2005-03-24 | Terex-Demag Gmbh & Co. Kg | Telescopic system with telescopic telescopic device |
| DE20208740U1 (en) | 2002-06-05 | 2003-10-09 | Liebherr Werk Ehingen | Mobile telescopic crane has external bracing cables terminating at their upper end in a fixed sleeve engaging with a cable lock trap at full extension |
| DE202004009019U1 (en) * | 2004-05-26 | 2005-12-29 | Liebherr-Werk Ehingen Gmbh | Telescopic jib for cranes has linking arm, which holds telescopic arms and bracing, which is arranged on bracing rack along with anchor rope whereby bracing rack can be extended and retracted in direction perpendicular to rope movement |
-
2008
- 2008-07-30 DE DE102008035583A patent/DE102008035583A1/en active Pending
-
2009
- 2009-07-30 CN CN200910165557.XA patent/CN101638207B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779236A1 (en) * | 1995-12-12 | 1997-06-18 | Liebherr-Werk Ehingen GmbH | Mobile crane |
| CN1209090A (en) * | 1995-12-15 | 1999-02-24 | 固特异轮胎和橡胶公司 | Method and apparatus of producing belts with precise cord length and tension |
| DE20002179U1 (en) * | 2000-02-08 | 2000-08-03 | Liebherr Werk Ehingen | Mobile crane |
| DE102005049606A1 (en) * | 2005-10-17 | 2007-04-19 | Liebherr-Werk Ehingen Gmbh | Crane vehicle for assembling wind turbines in wind farm, has connector arranged between telescopic jib and auxiliary jib, where auxiliary jib is pivotable around rotary axis of connector and is designed as lattice mast |
| DE202007008990U1 (en) * | 2007-06-27 | 2008-11-06 | Liebherr-Werk Ehingen Gmbh | Telescopic boom of a crane |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008035583A1 (en) | 2010-02-11 |
| CN101638207A (en) | 2010-02-03 |
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