EP3743367A1 - Turmkran - Google Patents
TurmkranInfo
- Publication number
- EP3743367A1 EP3743367A1 EP19701337.8A EP19701337A EP3743367A1 EP 3743367 A1 EP3743367 A1 EP 3743367A1 EP 19701337 A EP19701337 A EP 19701337A EP 3743367 A1 EP3743367 A1 EP 3743367A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jib
- counter
- tower crane
- connection
- boom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/64—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for T- or I-section beams or girders
-
- 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
-
- 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
- B66C23/02—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 non-adjustable and non-inclinable jibs mounted solely 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
- B66C23/18—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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- 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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
Definitions
- the invention relates to a tower crane, in particular top-slewing, with a boom and a counter-jib, wherein the boom or counter-jib is articulated by means of at least one connection point to the tower top and / or turntable.
- Booms or counter-jibs of a tower crane are usually articulated by means of non-positive connection to the tower top or a possible revolving platform in the area of the tower top.
- such compounds should be articulated and can be produced as far as possible without tools.
- the connection is made via several separate connection points.
- connection points the connection partners by means of a bolt, for example.
- Bolts or a sheet metal tab with bolts are locked together.
- the joint is then articulated about a horizontal transverse axis, ie the bolt axis. Since the adhesion between the dacaspartnem provided by means of the bolt and the majority of the forces thus introduced into the bolt Consequently, it must be comparatively large or strongly dimensioned. For medium-sized cranes this can have a weight of about 18 kg.
- connection point in particular of the jib or counter jib, by means of steel safety ropes, which should take over a catching function, in particular during the armor process.
- a disadvantage of the previous design is that visibility of the movement of the cantilever during disassembly prior to the final release of the connection, i. during the removal of the bolt, does not exist. Disassembly is carried out by means of an auxiliary crane, which receives the boom / counter-jib. If this does not grip the boom / counterjib exactly in its center of gravity, then the boom / counter-jib can unpredictably swing away from the connection point after releasing the lock. In the worst case, the component can swing uncontrollably into the crane structure during backward swinging and cause considerable damage to the crane.
- the object of the present invention is to improve the connection of boom and counter-jib on the crane tower.
- connection point between arm or counterjib and tower spike in such a way that a power transmission is realized via suitable abutment surfaces of the connection parts of the connection point.
- stop surfaces are pressed in crane operation by an applied compressive force against each other, so that a frictional connection between boom / counter-jib and tower top is provided.
- a first connecting part is provided which has a concave abutment surface.
- a second complementary connecting part of the connection point has a convex counterstop surface.
- the design of the stop surfaces ensures a certain relative movement of the connected crane parts to each other and thus ensures the desired articulation of the connection.
- a relative movement of the cantilever / counter-jib relative to the crane tower is thus made possible around a horizontal axis oriented transversely to the boom longitudinal axis.
- the negative radius of curvature of the concave stop surface is matched to the positive radius of curvature of the convex counter stop surface.
- a force transmission of the frictional connection should no longer be effected by means of a separate component, such as a bolt, but instead via suitable abutment surfaces of the individual connecting parts.
- the resulting junction can therefore be constructed much simpler and more effectively.
- connection between the boom and spire or counter-jib and T urmspitze and / or revolving stage is preferably realized by means of several connection points.
- corresponding connecting parts are provided on the respective end faces of the corner posts of a lattice arm.
- the complementary connecting parts are located in the region of the spire, may for example be provided on a corresponding connecting element of the crane tower or on a revolving platform installed in the region of the spire.
- the second connecting part may be configured in the form of a connecting head, wherein the connecting head defined by a defined radius as a counter-stop surface.
- the connecting head may be a head piece protruding from the cantilever or counterjib, in particular the corner post, so that the corresponding radius is provided at its end facing the spire.
- the connecting head forms at least one semicircle or half cylinder, wherein the central axis of the cylinder extends in the horizontal direction.
- the first connector is accordingly equipped as a complementary connection socket for receiving the connection head.
- the connection socket is configured by an adapted inner radius, which corresponds to the radius of the connection head or is dimensioned slightly larger.
- the inner wall of the connection socket forms the matching stop surface of the first connection part.
- At least one connecting bolt is inserted or pluggable to secure the connection point.
- a horizontally oriented bolt proves to be advantageous, which is plugged or plugged by appropriate bolt receptacles of the first and / or second connecting part.
- the connecting bolt can be dimensioned comparatively small. Ideally, here is a balance of forces between compressive and tensile forces of about 10: 1 given.
- connection point is the possibility for tool-free connection production and / or connection solution.
- the to be mounted / dismantling jib part / counter jib part is usually picked up by means of an auxiliary crane and brought into the connection area or removed from this.
- the crane operator of the auxiliary crane must bring together the abutment surfaces of the joint. It may be helpful if the moving jib part / counter jib part is caught after the rough alignment. This is preferably accomplished by means of one or more catch elements in the region of the moving jib part / counter jib part.
- At least one catch element is realized as a catching eye, which is provided in the assembly or operating position above the abutment surface or counter-abutment surface on the second connection part or on the boom or counter-extractor.
- the catching eye is characterized in principle by an opening through which a corresponding catching means of the first connecting part or the tower tip, preferably in the horizontal direction can be inserted.
- the fishing eye is expediently larger in size than the circumference or diameter of the collecting means used.
- the boom or counter-jib can be roughly spent in the area of the spire and the collecting means inserted through the fishing eye who the to ensure a coarse alignment of the two components to each other.
- the catch element in particular catch eye, also has an essential function during the dismantling process. After loosening the actual connection point, the connection between the boom or counter-jib and the tower tip is still roughly secured by the catching means inserted through the retaining eye, so that the boom or counter-jib is prevented from swinging away.
- This offers the possibility of being picked up by the auxiliary crane Align boom part or counterboom part first in an equilibrium position, so that the collecting means floats freely within the fishing eye. As a result, even after removal of the collecting means an uncontrolled swinging away of the boom or counter-jib is prevented.
- the catching eye is formed by an opening in a sheet that is perpendicular to the connecting head.
- the sheet extends vertically upward from the connection head.
- the connection head and the catch eye can also be formed in one piece.
- the present invention also relates to a method for mounting a cantilever or counter-jib on a tower crane according to the present invention.
- the process according to the invention is characterized by the following individual process steps:
- the present invention also relates to a disassembly method for releasing the connection between boom and tower crane, which is designed according to the present invention.
- the disassembly method according to the invention is characterized in that, in a first step, first the pin inserted through the second connecting part is pulled. In this case, the connection point is only secured by the connection between the catching means and the catching eye.
- the boom or counter-arm is aligned so that the collecting means floats freely within the fishing eye. In this state reached it is ensured that a corresponding hoist, for example, an auxiliary crane, for receiving the boom or counter-jib attacks this in the center of gravity, so that uncontrollable tes swinging away of the boom or counter-jib is prevented. Then then the collecting center! removed and the boom or counter-jib completely disassembled. Before loosening the connecting bolt inserted through the second connecting part, any possible bracing of the excavator / counter-jib must be drained off.
- FIG. 1 perspective side views of a connection point according to the invention between arm or counter-jib and tower crane,
- FIG. 2 shows a sectional view through the connection point according to the invention
- FIG. 3 perspective side views of the second connecting part provided on the boom or counter-ejector
- FIG. 4 shows perspective views of the first connecting part arranged on the tower top or revolving stage
- FIG. 5 shows a slightly modified embodiment of the connection point according to the invention
- Figure 6 an overall view of a crane with mounted boom / counter-jib
- Figure 7 another view of a crane with mounted boom / counter-jib.
- Figures 1 to 4 show different views of the novel connection point of the crane according to the invention, wherein Figures 1a, 1b show side views of the existing compound, Figure 2 is a sectional view in the longitudinal direction through the existing compound, Figures 3a, 3b are perspective side views of the second connecting part and Figures 4a, 4b show perspective views of the first connection part. Shown is a single junction, the overall connection between boom / counter-jib and crane tip, however, takes place over a variety of such joints.
- the first connecting part 10 is part of the crane tip or a rotary platform provided on the crane tip and is shown separately in FIGS. 4a, 4b.
- This is configured in the form of a connecting socket 11, whose inner wall 12 has a concave shape with a negative radius of curvature.
- side plates 13a, 13b mounted, in particular screwed to the connecting part 10, which are initially parallel to each other, but in Aurisonerraum outward, forming an insertion funnel are angled.
- the angled regions 14a, 14b form insertion aids for the introduction of the complementary connection part 20 into the connection socket 11.
- the side plates 13a, 13b also protrude beyond the upper edge of the first connection part 10 and look at it. rem the upper end in each case a bore 16 for bolt reception, the meaning of which will be explained later.
- the complementary second connecting part 20, shown separately in FIGS. 3 a, 3 b, is formed by the connecting head 21, which extends from the corresponding articulation area of the arm / counterbalance in the direction of the crane tip.
- the connecting head 21 comprises a convex counter stop surface 22 whose positive radius of curvature is dimensioned slightly smaller than the radius of the stop surface 12.
- connection head 22 is introduced into the connection socket 12, both connection parts 10, 20 can be pivoted relative to one another about a horizontal axis due to the coordinated radii, which is particularly advantageous during the assembly process.
- the connection is substantially non-positive, since the second connection part 20 and the Au challengeder / counter-jib is pulled by a bracing in the direction of the spire or in the connecting socket 12. Contrary directed tensile forces are removed by the connecting pin 35 which is inserted through corresponding holes 15 of the side plates 13 a, 13 b and a central bore 25 of the connecting head 22 transversely to legerl Kunststoffsachse. Thus, the connecting pin 35 also forms the pivot axis of the two connecting parts 10, 20.
- there is a force ratio of approximately 10: 1 between compressive and tensile forces which is why the connecting pin 35 can be dimensioned significantly smaller due to the comparatively low tensile forces ,
- connection socket 12 should be greater than the width of the connection head 22.
- a plate 30 extends vertically upwards, which has a large-sized circular opening 31.
- This opening serves as a catching eye 31, which among other things serves to catch the boom / counter-jib during crane installation.
- a catching bolt 36 can be inserted as a collecting means by the fishing eye 31 and the holes 16 of the side plates 13a, 13b.
- the jib part / counterjib part captured thereby can be aligned more easily in the final position for connecting, ie the connecting head 22 is inserted into the connecting socket with the assistance of the insertion aids 14a, 14b.
- the connecting pin 35 is inserted and tightened the boom tension or connected the upper flange.
- the diameter of the Einfangbolzens 36 is significantly smaller than the diameter of the Fangauges 31, which significantly simplifies the capture of the second connecting part.
- the catching eye also assumes a safety function during the dismantling process in order to avoid uncontrolled swinging away of the boom or counter-jib.
- the boom is received by the auxiliary crane and the connecting pin 35 is pulled. This results in a comparatively small movement of the boom or counter-jib, if it was not absorbed by the auxiliary crane exactly in its center of gravity.
- this oscillating movement is limited by the still inserted capture pin 36 which abuts against the inner wall of the fishing eye 31.
- the crane operator of the auxiliary crane must align the boom so far that the capture bolt 36 floats within the capture eye, i. does not hit the inner edge. If this is the case, then the recorded jib part / counter jib part is in equilibrium and an undesired oscillating movement after pulling the clamping bolt 36 can be ruled out. The boom or counter-jib can then be safely drained through the auxiliary crane.
- connection point differs in terms of the features essential to the invention in the embodiment of the connecting part 20.
- the catching eye 3 does not have a circular opening but instead has an oval or rectangular opening with rounded corners.
- Figures 6, 7 each show an overall view of a tower crane, the boom 20 are mounted in area 1 by means of the junction point according to the invention at the crane tip or a rotating platform provided there.
- the frictional connection is achieved because the second connecting part 20 (boom / counter-jib) is pulled through the bracing 2 in the direction of the spire or in the connection socket 12.
- this force is caused by the load torque of the boom / counter jib.
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 |
---|---|---|---|
DE102018101705.7A DE102018101705A1 (de) | 2018-01-25 | 2018-01-25 | Turmkran |
PCT/EP2019/051389 WO2019145260A1 (de) | 2018-01-25 | 2019-01-21 | Turmkran |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3743367A1 true EP3743367A1 (de) | 2020-12-02 |
EP3743367B1 EP3743367B1 (de) | 2023-10-18 |
Family
ID=65199420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19701337.8A Active EP3743367B1 (de) | 2018-01-25 | 2019-01-21 | Turmkran |
Country Status (7)
Country | Link |
---|---|
US (1) | US11731864B2 (de) |
EP (1) | EP3743367B1 (de) |
CN (1) | CN111801292B (de) |
BR (1) | BR112020014762A2 (de) |
DE (1) | DE102018101705A1 (de) |
RU (1) | RU2754013C1 (de) |
WO (1) | WO2019145260A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1377553A (fr) * | 1963-09-27 | 1964-11-06 | Flèche à chariot pour grues | |
US4491229A (en) * | 1981-02-25 | 1985-01-01 | Fmc Corporation | Boom extension stowage system |
US4529094A (en) * | 1983-08-22 | 1985-07-16 | Harnischfeger Corporation | Articulation for tower crane boom that has a parking position |
RU2225346C2 (ru) * | 1998-03-27 | 2004-03-10 | Лунден Евгений Ефимович | Башенный кран и способ его монтажа |
FR2788758B1 (fr) * | 1999-01-27 | 2001-02-23 | Potain Sa | Procede et dispositif pour le montage de la tete de mat des grues a tour |
US7878346B1 (en) * | 2008-08-25 | 2011-02-01 | Link-Belt Construction Equipment Co., L.P., Lllp | Adaptable boom extension for a mobile crane having a telescoping boom |
CN201850084U (zh) * | 2010-10-08 | 2011-06-01 | 长沙中联重工科技发展股份有限公司 | 起重臂与上支座的连接结构及具有该结构的起重机 |
CN103171978B (zh) * | 2013-04-02 | 2015-03-11 | 中联重科股份有限公司 | 快装接头和具有该快装接头的塔式起重机 |
CN203545532U (zh) * | 2013-11-26 | 2014-04-16 | 中联重科股份有限公司 | 接头装置及具有该接头装置的塔机 |
EP2982633B1 (de) * | 2014-02-17 | 2017-04-12 | Terex Global GmbH | Verbinder, kombinationskran und verbindungsverfahren |
-
2018
- 2018-01-25 DE DE102018101705.7A patent/DE102018101705A1/de active Pending
-
2019
- 2019-01-21 US US16/963,926 patent/US11731864B2/en active Active
- 2019-01-21 CN CN201980009757.8A patent/CN111801292B/zh active Active
- 2019-01-21 EP EP19701337.8A patent/EP3743367B1/de active Active
- 2019-01-21 WO PCT/EP2019/051389 patent/WO2019145260A1/de unknown
- 2019-01-21 RU RU2020127712A patent/RU2754013C1/ru active
- 2019-01-21 BR BR112020014762-1A patent/BR112020014762A2/pt unknown
Also Published As
Publication number | Publication date |
---|---|
DE102018101705A1 (de) | 2019-07-25 |
BR112020014762A2 (pt) | 2020-12-08 |
CN111801292B (zh) | 2022-08-26 |
CN111801292A (zh) | 2020-10-20 |
EP3743367B1 (de) | 2023-10-18 |
RU2754013C1 (ru) | 2021-08-25 |
WO2019145260A1 (de) | 2019-08-01 |
US11731864B2 (en) | 2023-08-22 |
US20210114849A1 (en) | 2021-04-22 |
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