EP2695844B1 - Mobile built-up folding crane - Google Patents
Mobile built-up folding crane Download PDFInfo
- Publication number
- EP2695844B1 EP2695844B1 EP12006026.4A EP12006026A EP2695844B1 EP 2695844 B1 EP2695844 B1 EP 2695844B1 EP 12006026 A EP12006026 A EP 12006026A EP 2695844 B1 EP2695844 B1 EP 2695844B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crane according
- folding crane
- boom
- mobile
- mobile built
- 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.)
- Not-in-force
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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
- B66C23/18—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
- B66C23/28—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 constructed to operate at successively higher levels
- B66C23/283—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 constructed to operate at successively higher levels with frameworks composed of assembled elements
-
- 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
- B66C23/52—Floating cranes
Definitions
- the subject of this invention is a mobile built-up folding crane as a device to lift up the heaviest loads, even above 500 tons, which also means that it is used to lift up or transfer sizeable loads adequate to their weights.
- Folding cranes are known that facilitate performing of final structure or transporting to the place of founding.
- sizable hoist or crane structures need to be displaced to another target place of work as early as when being set up and operated on a standard basis. It is seldom possible, that there is no need to change the place of work.
- a structure of self-winching crane is known, which is set up in the form of U-shaped arm that rests through a pin on a support tower, preferably rotary one, on which or in which a winching mechanism with winching and lifting ropes is mounted.
- Angle range of arm rotation is up to 90 degrees vertically and up to 360 degrees horizontally, with the support tower height much lower than the arm range.
- a large lattice mobile crane whose arms include modules joined together.
- the modules are composed of corner posts to which bars joining together the corner posts are mounted by means of flat fork and finger-like bosses.
- the bars hang on a pin that runs through the fork and finger-like bosses so that it is possible for them to rotate around it.
- the bars by means of a mounting with rotation capability enable folding of a simple latticed module structure, whereas adjacent latticed modules are joined together rigidly and separably through a pin located in each post end, which end is the flat fork and finger-like post bosses.
- the bars are preferably folded telescopically.
- the structure enables transportation of the modules after folding and disconnecting them, however, it seems that the method of mounting together of elements that consists in inserting of the pin inside the flat fork and finger-like bosses is insufficient to ensure appropriate breaking strength or that of torsion of the module structure itself or among the modules during crane operation.
- a tower crane of lattice construction in which ready-made and unconvertible modules are connected with one another as previously by means of a pin located separably and rigidly in holes of flat module-end bosses.
- the pin is wedged by a cotter or a flat wedge that runs through the pin.
- a device for lifting up of big loads which contains at least one lifting mast, a foot located on the bottom side and a lifting unit connected with at least one top, wherein the lifting device is fitted out of mast elements joined together by means of linking units, and each mast element is designed as framing construction composed of squares and bars that connect them crosswise.
- the squares are composed of two parts in the shape of a right-angled triangle, each one of different dimensions, that are supported by feet, where the linking units get inside the squares and are adjusted to that interior tightly and slidingly.
- Each linking unit as independent module contains two identical plate elements with filler placed between them, wherein at least two holes are made in the plate element, on its edge opposite the holes of the other plate elements, and these holes, after inserting of the linking unit inside the square, correspond axially to the holes on the square ends, and thereby adjacent elements of the mast are connected with each other with pins through the elements.
- the filler is preferably located between the plate element holes.
- the structure facilitates considerably neither transportation prior to installation nor displacement of ready-made, set-up, and operative form of the structure as device.
- None of the mentioned structures achieves both aspects of mobility to a sufficiently high degree, namely mobility prior to building up of the final structure, and possibility of displacing the already complete structure, wherein the degree of modular construction of the crane is considerable, and even if they did, they do not make it possible to set up such a modular construction allowing for its highest possible strength in built-up form during its operation, while obtaining the lightest possible form of such structure.
- the objective of the solution according to an embodiment of the present invention is obtaining such a structure which will at the same time satisfy the need of structure mobility understood in two ways, namely, easy transportation of structure elements of a big crane to its place of destination irrespective of how long an in what condition the transport route is, while obtaining mobility of the set-up structure already as operative big crane.
- Another purpose is for the structure to have the highest possible breaking and torsion strength while maintaining possibly the lightest weight of masts in the form or arms. Attaining of the set objectives is particularly difficult for big cranes of lifting capacity above 500 tons, located on a mobile base, mostly afloat one, which nonetheless turned out to be feasible thanks to the present invention.
- Mobile built-up folding crane of modular construction contains at least one boom, a rotary tower with column on a foot located on a mobile foundation, a lifting unit connected with at least one top, wherein the boom is fitted out of boom modules joined together by means of the linking units.
- Each boom module is designed as framing structure composed of stringers and cross-bars and, inclusively or exclusively, bars connecting them slantwise that reinforce the framing structure, wherein stringer is made up of at least two parts, and the linking units are tightly adjusted and contain filler and holes.
- the lifting unit is equipped with at least one winch with ropes.
- the mobile built-up folding crane is characterized by that the modules of at least one boom can be dismantled into smaller and basically individual elements, which are mainly stringers and bars.
- Each individual stringer is fitted with at least two bosses tipped with collars, wherein the collars may be located at the ends or inside the stringer length at right angle or acute angle in relation to the stringer, and single bar is fitted at its ends with collars, wherein the boss, and, inclusively or exclusively, the collar constitute an element of the linking unit, because the bars to not need to have bosses.
- Each collar has a cavity in which hard, rigid and solid filler resistant to shearing and torsional forces is tightly placed, and a stiffening linking unit, wherein envelope-like distributed holes in collars are adjusted axially against one another, creating together with the pins that run through them a collar and pin connection, preferably a collar and bolt one.
- the filler also fulfils a function of guiding the elements during their installation.
- the stringers and bars are hollow inside, which makes the structure light, wherein at least the stringers are made as a closed welded element of metal plates of limited resistance to plastic deformation of at least 690MPa.
- the other boom is located symmetrically against the main boom on the other side of the rotary tower in the shape of a cone or cylinder to whose base booms are fitted rotationally by means of pins.
- the booms are connected with each other by means of the lifting unit ropes supported on their tops.
- the tower cone enables the lifting unit ropes supported on the boom tops to run unimpeded next to the cone top when the booms are in their maximum horizontal and outreached position, and to easily reach their maximum vertical position when they are in that position, even though they are supported on the cone.
- the shape of the tower cone also makes it possible for the boom to be considerably close (retracted) towards rotation axis of the crane, which is much advisable in order to acquire maximum outreaches of the crane.
- Elements of the foot are preferably linked by means of the collar and bolt connection, and may contain filler inside for stiffening or guiding while assembling or ensuring tightness.
- elements of the column are preferably linked by means of the collar and bolt connection, and may contain filler inside for the same purpose.
- the elements of the tower are preferably linked by means of the collar and bolt connection that preferably contains filler inside. This type of connection allows disassembly of these elements and assembly in another place, which hasn't been done to date.
- the tower and, inclusively or exclusively, the foot, and, inclusively or exclusively, the column, and inclusively or exclusively, the bars can also be made of metal plates of limited resistance to plastic deformation of at least 690MPa.
- the column on the foot, and, inclusively or exclusively, the tower on the column, and, inclusively or exclusively, the tower on the foot can be mounted rotationally by means of slide bearing, which allows considerable lowering of their structure.
- the lifting unit can be equipped with at least one pair of winches, from which pair winching ropes of the lifting unit are wound on one winch, and drawing ropes of the lifting unit are wound on the other winch. The number of winch pairs can be multiplied.
- Boom modules in cross-section may have the shape of a triangle or rectangle through the top of which stringers run.
- the bars can be placed against the stringers at a 90-degrees, and, inclusively or exclusively, 45-degrees, and, inclusively or exclusively, 30-degrees, and, inclusively or exclusively, 60-degrees angle or at another angle.
- Cross-section of the stringers may have the shape of a triangle or rectangle or pentagon or hexagon or octagon or circle, and can be preferably reinforced inside.
- the stringer can be made of metal plates in the shape of squares, preferably rectangular ones.
- the stringer can be made of metal plates in the shape of a channel, preferably rectangular one, and at least one flat bar, or it can be made of two metal plates in the shape of channels.
- the stringer can be made of metal plates in the shape of flat bars.
- the stringer can be made of metal plates in the shape of channel ad T-bar.
- the stringer can be made of a greater number of metal plates in the shape T-bars and flat bars.
- the conical tower is preferably significantly lower than the position of the top of any boom set in its maximum vertical position, and at most equal to the position of the higher placed top of any of the booms in their lower position. Any collar connection is tight, and the stringers and bars are closed, thereby the elements are not exposed to rusting and decay.
- Stringer side in cross-section can be of dimension at least 150mm, preferably at least 250mm, and at best at least 600mm.
- the bar in cross-section can be of dimension at least 150mm, preferably at least 200mm, and at best at least 250mm.
- the boom module in cross-section can be of dimension at least 1.5m, preferably at least 3m, and at best at least 4.5m. Previously stated dimensions are preferable to attain the objective for big built-up and folding cranes, and with this assumption from the point of view of strength and cost effectiveness.
- the boom module can be preferably 25m long at most, preferably less than 12.5m, and this in turn allows easy transportation and length accommodation to means of transport. Overall length of the boom is preferably greater than 50m, and at best greater than 100m, which decides about usefulness and range of the device.
- a mobile foundation can be that of a vessel deck or wheeled vehicle or rail vehicle, which in turn definitely allows attaining of the objective in any conditions.
- the solution according to an embodiment of the present invention allows to repeatedly unfold and fold the booms to transport and working positions respectively, without the necessity of taking apart of the mobile crane into modular elements or basic elements.
- the structure according to an embodiment of the present invention also allows to take apart the mobile crane into basic elements and their road transport to another place of work in general. Lightness of the elements makes transportation and assembly easy. Dismantling to basic elements allows assembly at test site right next to production plant, and then, after completing trials/tests, to disassemble and assemble in identical form at the site of target installation, for instance at shipyard or port.
- Exemplary mobile built-up folding crane of modular construction contains two booms 1 , rotary tower 2 with column 3 on foot 4 located on mobile foundation 5 , this being vessel deck, lifting unit 6 connected with two tops 7 of booms 1 , wherein boom 1 is fitted out of boom modules 8 joined together by means of linking units 9 .
- Each boom module 8 is designed like framing construction composed of stringers 10 and bars 11 that connect them crosswise and slantwise and reinforce the framing structure, wherein stringer 10 is composed of at least four parts, and linking units 9 are tightly adjusted and contain filler 12 and holes 13 .
- Lifting unit 6 is equipped with four winches 14 with ropes. Modules of both booms 1 can me dismantled into smaller and basically individual elements.
- Smaller elements of the longer boom 1 are mainly stringers 10 and bars 11 .
- Each individual stringer 10 is fitted with at least two bosses 15 tipped with collars 16 , wherein bosses 15 are located at the ends and inside the stringer 10 length at right angle or acute angle in relation to the stringer, and single bar 11 is fitted at its ends with collars 16 .
- Boss 15 and, inclusively or exclusively, collar 16 constitute element of linking unit 9 , because bars 11 do not have bosses 15 .
- Each collar 16 of stringer 10 has cavity 17 in which hard, rigid and solid filler 18 resistant to shearing and torsional forces is tightly placed, and linking unit 9 that stiffens and guides, wherein envelope-like distributed holes 13 in collars 16 are adjusted axially against one another, creating together with pins 20 that run through them collar and pin connection 19 .
- Stringers 10 and bars 11 are hollow inside, which makes the structure light, wherein stringers 10 are made as closed welded element of metal plates of limited resistance to plastic deformation of at least 900MPa.
- the other boom 1 is located symmetrically against the main boom on the other side of rotary tower 2 in the shape of a cone, to whose base booms 1 are fitted rotationally by means of pins 20 .
- Booms 1 are connected with each other by means of the lifting unit ropes supported on their tops.
- Tower cone 2 enables ropes 21 of lifting unit 6 supported on tops 7 of booms 1 to run unimpeded next to cone top 2 when the booms are in their lower position, and to easily reach their maximum vertical position close to 90 degrees when they are in that position, even though they are supported on the cone.
- Elements of foot 4 are linked by means of collar and bolt connection 19 .
- elements of column 3 are linked by means of collar and bolt connection 19 .
- elements of tower 2 are linked by means of collar and bolt connection 19 . This type of connection allows disassembly of these elements and assembly in another place, which hasn't been done to date.
- Tower 2 and inclusively foot 4 and inclusively column 3 are also made of metal plates of limited resistance to plastic deformation equal to 1100MPa.
- Tower 2 on column 3 is mounted rotationally by means of slide bearing, which allows considerable lowering of their structure.
- Lifting unit 6 is equipped with two pairs of winches 14 , from which each pair winching ropes 21 of lifting unit 6 are wound on one winch 14 , and drawing ropes 21 of lifting unit 6 are wound on the other winch 14 .
- Boom modules 8 in cross-section have the shape of a rectangle through the top of which stringers 10 run. Some bars 11 are placed against stringers 10 at a 90-degrees, and other ones at 45-degrees angle.
- Cross-section of stringer 10 may have the shape of a rectangle and is reinforced inside.
- Stringer 10 is made of rectangular squares. Stringer 10 is reinforced with flat bar welded inside to the squares. There are 4 envelope-like distributed holes in the collar connection, wherein their distribution is envelope-like even.
- Conical tower 2 is significantly lower than the position of top 7 of any boom 1 set in its maximum vertical position, and at most equal to the position of the higher placed top 7 of any of booms 1 in their lower position.
- Boom collar connections are tight, and stringers 10 and bars 11 are closed, thereby the elements are not exposed to rusting and decay.
- Side of stringer 10 in cross-section is of dimension 600 mm.
- Bar 11 in cross-section is of dimension 300 mm.
- Boom module 8 in cross-section is of dimension 6 m and 8 m, and thereby creates a rectangle. Module of boom 8 is 24 m long. Overall length of boom 1 is greater than 100 m, which decides about usefulness and range of the device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL400304A PL221178B1 (pl) | 2012-08-09 | 2012-08-09 | Mobilny żuraw składany |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2695844A1 EP2695844A1 (en) | 2014-02-12 |
EP2695844B1 true EP2695844B1 (en) | 2015-04-01 |
Family
ID=46826185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12006026.4A Not-in-force EP2695844B1 (en) | 2012-08-09 | 2012-08-23 | Mobile built-up folding crane |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2695844B1 (pl) |
PL (1) | PL221178B1 (pl) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105384085A (zh) * | 2015-12-21 | 2016-03-09 | 太重(天津)滨海重型机械有限公司 | 塔柱式三弦杆臂架船用起重机 |
CN108639977A (zh) * | 2018-03-30 | 2018-10-12 | 南通振华重型装备制造有限公司 | 一种2000t浮吊起重机变幅钢丝绳预紧和调整方法 |
CA3106951A1 (en) | 2018-07-24 | 2020-01-30 | Mammoet Holding B.V. | Crane, method for assembling a crane and method for disassembling a crane |
NL2021383B1 (en) * | 2018-07-24 | 2020-01-30 | Mammoet Holding B V | Crane, method for assembling a crane and method for disassembling a crane |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8901815A (nl) | 1989-07-13 | 1991-02-01 | Huisman Spec Lifting Equip Bv | Hijskraan. |
FR2853891B1 (fr) | 2003-04-17 | 2006-05-19 | Potain Sa | Dispositif d'assemblage demontable des elements de fleche d'une grue a tour |
PL63368Y1 (pl) | 2004-06-21 | 2007-08-31 | Jerzy Kiczynski | Żuraw składany z obrotowym mechanizmem zmiany nachylenia wysięgnika |
DE102005006118A1 (de) * | 2005-02-10 | 2006-08-24 | Grove U.S. Llc | Selbsteinstellendes Gleitstück für Teleskopkranausleger |
NL1029406C2 (nl) * | 2005-07-01 | 2007-01-04 | Itrec Bv | Hijskraanmodule voor demontabele hijskraan. |
DE102006060347B4 (de) | 2006-12-20 | 2008-09-25 | Liebherr-Werk Ehingen Gmbh | Gitterstück für einen mobilen Großkran und Verfahren zu seinem Aufrichten |
DE202010011131U1 (de) | 2010-08-06 | 2011-11-23 | Liebherr-Werk Ehingen Gmbh | Gitterstück und Kran |
CN202089710U (zh) * | 2011-06-10 | 2011-12-28 | 长沙中联重工科技发展股份有限公司 | 塔机爬升架及包含该塔机爬升架的塔式起重机 |
-
2012
- 2012-08-09 PL PL400304A patent/PL221178B1/pl unknown
- 2012-08-23 EP EP12006026.4A patent/EP2695844B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
PL400304A1 (pl) | 2014-02-17 |
EP2695844A1 (en) | 2014-02-12 |
PL221178B1 (pl) | 2016-03-31 |
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