EP4204350A2 - Turmdrehkran - Google Patents
TurmdrehkranInfo
- Publication number
- EP4204350A2 EP4204350A2 EP21799223.9A EP21799223A EP4204350A2 EP 4204350 A2 EP4204350 A2 EP 4204350A2 EP 21799223 A EP21799223 A EP 21799223A EP 4204350 A2 EP4204350 A2 EP 4204350A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tower
- guy
- guying
- crane
- supports
- 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.)
- Pending
Links
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- B66C23/66—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
- B66C23/18—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
- B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
-
- 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
- B66C23/16—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 jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
-
- 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
- B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable
-
- 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
- B66C23/88—Safety gear
Definitions
- the present invention relates to a tower crane with a tower that carries a jib from which a hoist rope runs, with guying being provided that runs at least partially along the tower and, by means of guying supports, transversely to the longitudinal center plane of the crane that runs through the tower and the jib. is spread.
- the guying is usually routed backwards to this counterjib.
- the guying In the case of tower cranes without a counterjib, the guying is guided downwards via the tower top or guying strut, which is then inclined backwards.
- the guy lines in the form of guy ropes, guy rods or occasionally guy chains usually run in the longitudinal center plane of the crane, which runs through the tower and the jib, in order to absorb the vertical loads and the induced bending and tilting moment acting in the longitudinal center plane of the crane , whereby the vertical loads originate to a large extent from the attached hoisting load, but also include the jib’s own load components. Excessive deflection of the jib in the mentioned longitudinal center plane of the crane can thereby be avoided or at least limited.
- the stability and thus the load capacity of the crane is also limited by torsion of the crane structure transverse to the longitudinal center plane of the crane, whereby transverse loads transverse to the longitudinal center plane of the crane are essentially introduced into the crane structure by wind attacking from the side, but oscillating loads or rotational accelerations also play a part suspended loads can induce transverse forces in the jib when the crane rotates around the upright tower axis.
- the document DE 31 05 771 A1 shows a tower crane with a telescoping tower that carries a boom, on the top of which are attached V-shaped spread guy supports.
- Two guy ropes run over the cantilevered ends of the V-shaped spread guy supports, which are brought together at a guy support that cantilevers horizontally backwards from the jib pivot piece of the tower is. Due to this spatial bracing of the jib via bracing supports spread out in a V-shape, bulging or lateral torsion of the jib can be avoided. At the same time it will possible to pull the jib straight, so to speak, by precisely adjusting the length of the two guy ropes.
- the tower remains at risk of twisting laterally transverse to the central longitudinal plane of the crane under transverse loads, such as strong side winds, whereby the tower is not only loaded like a bending beam, but also due to the additional high vertical loads that load the tower in the manner of a pressure rod, is also exposed to an increased buckling load.
- the susceptibility to buckling increases further when an elongated, slender rod profile has already undergone a certain amount of bending in addition to the pressure load caused by lateral forces.
- Such loss of stability of rod-like structures due to lateral deflection under axial compressive stress is sometimes also referred to as Euler's buckling cases.
- the boom and tower cross sections are usually enlarged and/or the wall thicknesses of the profile parts are increased or, in the case of framework structures, the cross braces are also reinforced.
- the present invention is based on the object of creating an improved tower crane of the type mentioned at the outset, which avoids the disadvantages of the prior art and further develops the latter in an advantageous manner.
- increased stability of the crane structure and thus safety during crane operation in the event of lateral forces such as cross winds should be achieved without deterioration or preferably with a simultaneous improvement in efficiency, i.e. the ratio of load capacity to dead weight of the crane.
- the guying comprises at least one pair of guying supports that are spread out spatially and are articulated on the tower between its lower end and the boom. Due to the spread guy supports on the tower, compressive and/or tensile forces with a component perpendicular to the crane's longitudinal center plane can be transferred between the tower and guying, which stabilizes the tower against bulging or buckling.
- the guy supports transmit tensile and/or compressive forces from the tower to the guying means running along the tower, which can be designed, for example, in the form of guy ropes, guy rods or guy chains, transverse to the longitudinal axis of the tower, with the transmitted tensile and/or compressive forces of advantageous components being both transverse to the longitudinal center plane of the crane and also parallel to the longitudinal center plane of the crane.
- two or more pairs of guy supports spread out in a V-shape can be distributed along the tower and attached to the tower. steers his and to support different tower sections lying at different heights against lateral forces or buckling of the tower profile.
- the guy supports spread out in a V-shape can fundamentally be designed in different ways, in particular they can comprise elongated beams inclined at an acute angle to one another, which have an approximately straight course, but can also be designed bent or kinked.
- the guy supports can also be designed in the form of a guy frame like a guy frame.
- the V-shaped spread is defined by the points of articulation of the guy ropes or the guy ropes on the guy supports or the guy frame on the one hand and the points of articulation of the guy supports or the guy frame on the tower on the other hand, it being possible for only one common articulation point to be provided on the tower .
- the guy supports can also form part of a guy trestle or frame or a guy support structure running transversely to the guy cables.
- At least one pair of guy supports on a boom pivot piece of the tower to which the boom is articulated, and at least one further pair of guy supports on an intermediate tower section provided between the lower tower end section and the named boom pivot piece be articulated, on the one hand to brace the heavily stressed jib pivot piece against lateral torsions and transverse forces and on the other hand to brace the tower at the intermediate section against buckling or lateral deformations.
- the two pairs of guy supports mentioned on the boom pivot piece and on the intermediate tower section stretch the guy tension means spatially in such a way that the boom pivot piece and the tower intermediate section are braced both against transverse forces and transverse deformations transverse to the longitudinal center plane of the crane and against longitudinal forces and deformations parallel to the longitudinal center plane of the crane .
- a lower pair of guy supports spread out in a V-shape can be articulated on the tower in a lower third of the tower, for example in the range of 10%-50% of the tower height when this is measured from below from the tower base.
- a pair of V-shaped spread guy supports can be articulated on an intermediate tower section at a height in the range of 30% - 60% or 40% - 70% of the tower height on the tower, with the tower height being the vertical extension of the tower from its lower The end is meant up to the height of the pivot point of the jib on the tower and a possibly provided tower top is not measured.
- the guying pull means along the tower can be guided in a guying plane which extends upright and perpendicular to the longitudinal center plane of the crane and is arranged at a distance from the tower on a tower rear side facing away from the boom.
- the guying pull means are offset to the rear from the tower and at the same time spaced apart from one another transversely to the longitudinal center plane of the crane, so that the guying along the tower can absorb both longitudinal forces in the longitudinal center plane of the crane and transverse forces.
- the guy ropes can run essentially straight past the at least one pair of spatially spread guy supports, which are articulated on the tower between its lower end and the jib pivot piece on the tower, or can only be slightly bent at the guy supports, for example at a kink angle in the area 160 °-180° or 170°-180°.
- lateral forces or tensile and/or compressive forces between the tower and the guy ropes are essentially only transmitted via the guy supports when lateral forces act on the tower, for example in the form of cross winds, or the tower buckles or buckles. threatens to bulge.
- the guy ropes which are heavily tensioned in the direction of pull, Normally, when there are no major external wind loads or other lateral forces acting on the tower or the jib, there is no prestressing on the tower, but pulls straight past the guy supports, which are hinged to the tower. This applies at least to a lower pair of guy supports or a pair of guy supports articulated on the intermediate tower piece.
- a pair of guy supports attached to the upper end of the tower or to the pivoting piece of the boom can provide greater deflection of the guy pulling means in order to deflect them towards the boom.
- the guying hoisting means can be articulated with their lower ends on a slewing and/or supporting platform of the tower crane that supports the tower, with the articulation points on the slewing and/or supporting platform being essentially perpendicular below the articulation points of the guy supports for the guying hoisting means can lie.
- At least the pair of guy supports can have at least one configuration in which the pivot points of the guy pulling means on the revolving and/or support platform lie essentially vertically below the pivot points on the guy supports.
- the pivot points on the revolving or support platform can be offset relative to the vertical through the pivot points on the guy supports.
- Adjusting device for variable adjustment and setting a spread angle of the guy supports can be provided. If the spread angle is increased, the distance between the guying devices, ie transversely to the longitudinal center plane of the crane, increases and the guying effect against transverse forces or transverse deformations transversely to the longitudinal center plane of the crane is increased. Will conversely, if the angle of spread is reduced, the anchoring effect in the longitudinal center plane of the crane is increased or the lateral force anchoring is reduced.
- the specified spread angle means the spread of two imaginary straight lines, which each pass through the point of attachment of the guy tension means on the guy support on the one hand and the point of attachment of the guy support on the tower on the other hand, and is therefore independent of the concrete contouring of the guy supports or .of the guy stand.
- the adjustment device can also be designed differently.
- an expanding drive or the adjustment device mentioned can comprise a pivoting device in order to pivot the two guy supports apart to a greater or lesser extent or to pivot them towards one another.
- a frame-like guy stand which can include a crossbeam between the pivot points of the guy rope, for example, a telescoping crossbeam can be provided and the spreading drive can include a telescoping drive in order to spread the guy ropes further apart by lengthening the crossbeam and vice versa by shortening the crossbeam bring closer together.
- Said spreading drive can be driven by external energy, for example it can comprise a hydraulic cylinder or have a spindle drive.
- a manually operable spreading drive can also be provided in order, for example, to set a desired spreading angle before erecting the crane.
- an adjustment device for adjusting and variably determining an effective length of the guy supports can also be provided in order to change the course of the guy pulling means by adjusting the effective length of the guy supports.
- telescopic guy supports can be provided, with a telescoping drive can advantageously be provided in order to be able to telescope out and/or in the guy supports driven by external energy, which, for example, also enables easy adjustment even when the crane is already set up or installed, for example when there is a strong crosswind on an operating day.
- a manually operated length adjustment device for example a spindle drive or screwing two support beam parts, in order to be able to set the effective length of the guy supports, for example when assembling a crane.
- the effective length mentioned means the distance between the point of attachment of the guy rope on the guy support and the point of attachment on the tower.
- the guying is spread out spatially across the interface between the tower and boom, and the guying can be spread out spatially both along the tower and along the boom transversely to the longitudinal central plane of the crane.
- the entire crane structure including tower and jib can be stiffened or braced against transverse forces and lateral deflection movements of the jib can also be avoided or limited. This means that a significantly higher load capacity can be achieved without noticeably increasing the crane's own weight.
- FIG. 2 a rear view of the tower crane from FIG. 1, showing the spread of the guying transverse to the longitudinal center plane of the crane and the effective lever arm of the guying traction means along the tower transverse to the longitudinal center plane of the crane
- 3 a plan view of the tower crane from above, which shows the spatial progression of the guying hoisting means along the boom and the tower.
- the tower crane 1 comprises a tower 2 which is upright when in use and which supports a jib 3 which is articulated to an upper end portion of the tower 2 and cantilevers from the tower 2 .
- a hoist rope 4 runs from the boom 3 in order to be able to raise and lower a load handling device such as a load hook.
- Said hoist rope 4 can run off a trolley 5, which can be moved along the boom 3 by a trolley drive.
- a trolley 5 can also be provided for a luffed boom 3 .
- the boom 3 can be aligned lying in at least one operating position.
- the tower 2 is mounted on a slewing and/or support platform 6, which can be rotated about an upright axis of rotation by a slewing gear, so that the entire crane can be rotated about the upright axis of rotation, which can be coaxial with the longitudinal axis of the tower.
- the tower crane 1 can also be designed as a top-slewing crane, in which case the jib 3 is mounted on the tower 2 so that it can rotate about the upright axis.
- the guying 7 still to be described can be articulated on the overhead slewing platform for the jib.
- the tower 2 and the jib 3 are braced by a guying 7, which comprises guy ropes 8 running along the jib 3 and along the tower 2, in the form of guy ropes, guy rods or possibly also guy chains or hybrid forms thereof can be trained.
- the guy ropes 8 can have one or more pivot points on the jib 3, for example in an outer half or an outer third of the jib 3, in order to extend above the spine of the jib 3 back towards the tower 2.
- the guy ropes 8 can be braced by one or more guy supports 9 on the boom 3, for example by means of a guy support between the outer attachment point of the guy rope 8 and the tower 2 and a further guy support 9 in the area of the pivot piece with which the boom 3 is attached to the tower 2 is hinged.
- said guy supports 9 are designed in the form of three-dimensional guy blocks or in the form of pairs of guy supports spread apart in a V-shape, so that the guy tension means 8 are spaced apart from one another transversely to the longitudinal center plane 10 of the tower crane 1, which runs through its tower 2 and its boom 3 be guided over the boom 3.
- the guy supports 9 can be spread out so far that the guy pulling means 8 above the boom 3 are spaced further apart from each other, at least in sections, than the boom 3 is wide.
- the distance between the guy ropes 8 can be greater than the transverse extension of the boom 3 transversely to the said longitudinal center plane 10.
- Said guy supports 9 on the boom 3 can be spread upwards in a V-shape, for example at an angle of 2 times 10° to 2 times 60° or 2 times 15° to 2 times 40° or 2 times 10° to 2 times 20° .
- the guy supports 9 are inclined symmetrically to the longitudinal center plane 10 .
- the guying 7 also includes guying pull means 11 running from top to bottom along the tower 2 , which are supported on the tower 2 by means of guying supports 12 .
- guying pull means 11 running from top to bottom along the tower 2 , which are supported on the tower 2 by means of guying supports 12 .
- the Abspannzugstoff 11 spread out transversely to the longitudinal center plane 10 of the tower crane 1 or spaced apart in order to be able to intercept both transverse forces transverse to the longitudinal center plane 10 and longitudinal forces in the longitudinal center plane 10 .
- the guy ropes 11 are supported on the tower 2 by means of several pairs of guy supports 12 in order to be able to transmit tensile and/or compressive forces between the tower 2 and the guy ropes 11 .
- the pairs of guy supports 12 are spread out in a V-shape and are arranged symmetrically to the longitudinal center plane 10 , the guy supports 12 extending to the rear of the tower 2 facing away from the boom 3 .
- the spread angle ß of the guy supports 12 can be such that the distance between the guy cables 11 and transverse to the longitudinal center plane 10 is greater than the transverse extension of the tower 2 transverse to said longitudinal center plane 10.
- the guy supports 12 can be spread out from the tower 2 to the rear in a V-shape, for example at an angle ⁇ of 2 times 10° to 2 times 60° or 2 times 15° to 2 times 40° or 2 times 10° to 2 times 20°.
- the spacing of the anchoring pull means 11 from the longitudinal center plane 10 is denoted by the dimension X_2, which indicates the effective lever arm of the anchoring pull means 11 with respect to the longitudinal center plane or is a measure for the anchoring of transverse loads.
- the spacing X_2 of the guy ropes transversely from the longitudinal center plane 10 can vary and can be, for example, in the range from 60% to 500% or 75% to 300% or 100% to 200% of the width 13 of the tower 2, i. H. whose extent is transverse to the longitudinal center plane 10.
- the distance between the guy ropes 11 and the longitudinal center plane 10 can also be in other areas.
- the spacing can be chosen to be at least large enough for the bracing pull means 11 to span a larger bracing width than the Tower 2 is wide.
- the guying pull means 11 can span a guying width of 2 times X_2 in the area of the tower 2, which is approximately twice the width of the tower 2 when the crane 1 according to FIG. 2 is viewed from its rear.
- the guying pull means 11 can run along the tower 2 in a guying plane 14 which extends upright and perpendicular to the longitudinal central plane 10, wherein said guying plane 14 can advantageously be aligned at least approximately vertically.
- the guying plane 14 is spaced from the tower 2 on its rear side, d. H. arranged opposite the jib 3, so that the anchor pull means 11 can also transfer loads in the longitudinal center plane 10 and can brace the tower against vertical loads.
- the spread angle ⁇ realized by the guy supports 12, which are articulated on the tower 2 can range from 2 times 5° to 2 times 60° or 2 times 10° to 2 times 50° or 2 times 15° to 2 times 40°, said spread angle ß being defined by the straight connecting lines which pass through the pivot points of the guy pull means 11 on the guy supports 12 on the one hand and through the pivot points of the guy supports 12 on the tower 2 on the other hand.
- the guy supports 12 can be variably adjustable with regard to the spread angle ß, with an adjusting device 15 being able to comprise, for example, a hydraulic cylinder or a spindle drive which is arranged between the guy supports 12 that belong together in pairs and acts on the two guy supports 12 in order to spread them further apart or spread less.
- an adjusting device 15 being able to comprise, for example, a hydraulic cylinder or a spindle drive which is arranged between the guy supports 12 that belong together in pairs and acts on the two guy supports 12 in order to spread them further apart or spread less.
- This ability to spread the guy supports 12 is shown in FIG. 2, with the course of the guy pulling means 11 being shown by the dashed lines when the guy supports 12 are in a more spread-out position, while the solid lines show the course of the guy pulling means in a less spread-out position.
- the guy supports 12 can also be length-changeable, for example telescopic, and possibly have a telescoping drive in order to also be able to variably adjust the course of the spatial guy 7 along the tower 2 by changing the length of the guy supports 12.
- the adjustability of the course of the spatial guying 7 along the tower 2 allows the guying conditions to be adapted to the operational conditions. If the crane is used, for example, in strong side winds, the guy ropes 11 can be guided further apart from one another along the tower 2 and/or along the jib 3 by spreading the guy supports 12 and/or guy supports 9 more openly or by telescoping or lengthening the guy supports. in order to have a greater lever arm effect against transverse forces or transverse loads on the crane structure or to be able to brace stronger transverse loads.
- the guy ropes 11 run approximately straight past the lower guy supports 12, which can be provided in the lower third of the tower 2, or they are only slightly bent, depending on the spread angle of the guy supports 12.
- the pivot points of the guy hoisting means 11 on the revolving and/or support platform 6 can be positioned essentially vertically below the pivot points of the guy supports 12 for the guy hoisting means 11, so that the guy hoisting means 11 from the guy supports 12 are essentially straight or perpendicular downwards to the slewing - or supporting platform 6 run.
- guying 7 is routed spatially across the interface between tower 2 and boom 3, with guying pull means 16 being able to connect guying pull means 11 running along tower 2 to guying pull means 8 running above boom 3 and/or from the pivot points of the run upper tower guy supports 12 to the pivot points of inner boom guy supports 9 or can connect them to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020128161.7A DE102020128161A1 (de) | 2020-10-27 | 2020-10-27 | Turmdrehkran |
PCT/EP2021/079326 WO2022090075A2 (de) | 2020-10-27 | 2021-10-22 | Turmdrehkran |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4204350A2 true EP4204350A2 (de) | 2023-07-05 |
Family
ID=78414643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21799223.9A Pending EP4204350A2 (de) | 2020-10-27 | 2021-10-22 | Turmdrehkran |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230339731A1 (de) |
EP (1) | EP4204350A2 (de) |
DE (1) | DE102020128161A1 (de) |
WO (1) | WO2022090075A2 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4737785Y1 (de) * | 1969-02-28 | 1972-11-15 | ||
DE3105771A1 (de) | 1981-02-17 | 1982-09-02 | Liebherr-Werk Bischofshofen GmbH, 5500 Bischofshofen | Turmdrehkran |
DE9316113U1 (de) * | 1993-10-21 | 1995-02-16 | Liebherr-Werk Biberach GmbH, 88400 Biberach | Turmdrehkran |
JP5377176B2 (ja) * | 2009-09-08 | 2013-12-25 | 株式会社加藤製作所 | クレーン装置 |
US8267028B2 (en) * | 2009-09-21 | 2012-09-18 | Composite Rigging Limited And Company | Semi-continuous composite rigging system |
CN102431896B (zh) * | 2011-11-22 | 2014-08-27 | 中联重科股份有限公司 | 起重机载荷检测的方法、装置和***以及起重机 |
CN102874693B (zh) * | 2012-09-25 | 2014-10-15 | 三一重工股份有限公司 | 一种起重机及其超起装置 |
DE102013011489B4 (de) | 2013-07-09 | 2021-09-16 | Liebherr-Werk Ehingen Gmbh | Turmdrehkran |
DE102015003981A1 (de) | 2015-03-26 | 2016-09-29 | Liebherr-Werk Biberach Gmbh | Kranauslegervorrichtung |
EP3553016A1 (de) | 2018-04-13 | 2019-10-16 | Viatron S.A. | Turmkran |
-
2020
- 2020-10-27 DE DE102020128161.7A patent/DE102020128161A1/de active Pending
-
2021
- 2021-10-22 EP EP21799223.9A patent/EP4204350A2/de active Pending
- 2021-10-22 WO PCT/EP2021/079326 patent/WO2022090075A2/de unknown
-
2023
- 2023-04-27 US US18/308,231 patent/US20230339731A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2022090075A2 (de) | 2022-05-05 |
US20230339731A1 (en) | 2023-10-26 |
DE102020128161A1 (de) | 2022-04-28 |
WO2022090075A3 (de) | 2022-07-07 |
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