EP2984024A1 - Faltbarer kranausleger und kran - Google Patents
Faltbarer kranausleger und kranInfo
- Publication number
- EP2984024A1 EP2984024A1 EP14713038.9A EP14713038A EP2984024A1 EP 2984024 A1 EP2984024 A1 EP 2984024A1 EP 14713038 A EP14713038 A EP 14713038A EP 2984024 A1 EP2984024 A1 EP 2984024A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- crane
- jib
- foldable
- mounting part
- 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
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
- B66C23/16—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
- B66C23/18—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
- B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
-
- 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
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- 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
- B66C23/823—Bracing equipment acting in vertical direction
Definitions
- the invention relates to a folding crane boom for a tower crane, in particular for a vertical winch crane, with at least two articulated boom parts, a boom bracing and a mounting part for boom mounting.
- the crane boom consists of at least two boom segments, which are folded to save space for crane transport. For crane operation, these are unfolded with the aid of a mounting part and brought into the horizontal position required for crane operation.
- the boom is braced by additional boom bracing during lifting work.
- FIG. 1 a known foldable crane boom is outlined.
- the boom comprises two articulated boom segments 1, 2, which can be folded to save space for crane transport.
- the unfolding of the jib parts 1, 2 is outlined.
- the mounting egg! 4 is about the mounting egg! 4 accomplished, which is fixed to the one end to the winch 5 and is arranged with the remaining end to the guy rod 3. If the mounting part 4 is lowered from the winch 5, then the boom parts 1, 2 lower due to their weight in the horizontal boom position. After successful boom mounting the rope 4 is relieved. For the subsequent crane operation with a horizontal boom, the mounting part 4 has no further function.
- a disadvantage of the embodiment shown, however, is that due to the folding mechanism of the boom for the bracing 7 a complex construction is necessary. This is equipped with a Faltkinematikteil and a cable element to allow the lateral unfolding of the guying 7.
- the object of the present invention is to provide a cheaper and easier way of boom bracing for a folding crane boom.
- the foldable boom comprises at least two articulated boom parts.
- the first boom part is hinged to the tower, i. the tower top of the crane connectable or connected.
- the at least second boom part is hingedly connected to the first boom part.
- the jib parts can be folded against each other or folded together to save space. In crane operation, the jib parts assume a horizontal or almost horizontal orientation.
- a mounting cable is available, by means of which the individual boom parts can be brought into the operating position.
- the foldable boom may have, in addition to the at least two articulated boom parts connected to one or more further boom parts, which are either rigid or foldable also connected to the at least two boom parts. For example, these may be attached to the outer tip of the second jib part. be arranged, in particular be arranged articulated. Individual jib parts can be made in one or more parts.
- the invention essential idea of the present invention is now to use the hitherto mandatory mounting part for the jib mounting for later crane operation as bracing.
- the unfolded crane boom is at least partially braced by the mounting part during crane operation with a horizontal boom.
- Certain parts of the previous boom bracing can be at least partially saved.
- those parts of the boom bracing can be saved, which were designed particularly complicated due to the required folding kinematics.
- the invention enables a simplified Auslegerabwood, thereby accumulating manufacturing and maintenance costs can be reduced.
- the mounting part has a double function, a discharge of the mounting part analogous to the prior art is no longer provided.
- the crane boom on a central support over which the mounting part is guided from the first boom part to at least one second boom part.
- the mounting part is guided over the upper tip of the center support.
- one or more pulleys may be provided which is attached to the top or in the region of the tip of the central support or are.
- the mounting part is guided from the central support to the outer region of the second jib part or to the vicinity of the outer tip of the second jib part.
- the mounting part is either fixed at this point or in this area on the second boom part or is deflected by a deflection roller.
- the distance between the central support and the fixing or deflection point of the mounting part at the outer tip of the second boom part is chosen as large as possible.
- the necessary tethering force can be reduced in crane operation.
- the Krakarm the second jib part is reduced to a reasonable level, ie there is a projection beyond the tether. This allows a minimization of the boom steel weight.
- the mounting part extends from the first jib part, in particular from the articulation point of the first jib part on the crane tower, over the middle support up to the outer tip of the second jib part.
- the mounting part can lift off the guide or pulley of the center support.
- constructive solutions for the safe threading of the mounting part are provided during the deployment of the boom parts. It is advisable to equip the pulley with one or more ropes, which facilitate threading of the mounting part during deployment of the boom parts.
- the central support may comprise a telescopic mechanism, by means of which the central support or the cable pulley arranged at the tip can be tracked to the lifting rope during the Krandem assembly. Ideally, the mounting part always remains in contact with the pulley.
- the pulley of the center support can be equipped with a fixed counter-roller, whereby the mounting part always remains threaded on the center support.
- this constructive solution has the disadvantage that the cable force for complete boom contractions is very large, since the resulting lever arm at the mounting end is very small.
- the intended central support can be mounted either on the first or on the second boom part or alternatively on the articulated connection point of the two boom parts.
- one or more auxiliary installation cables may be provided. These auxiliary ropes are at the end with the Central support and the respective boom part connected.
- these assembly aid cables can simultaneously serve as a means of locking the center support.
- this can preferably be retracted several times. Conveniently this is a multiple reeving of the rope course between center support and second boom part.
- one or more deflection rollers are provided, which permit a multiple insertion between central support and second jib part.
- additional deflection rollers are provided for the mounting part on the first and / or second boom part.
- at least one deflection roller may be arranged on the first and / or second boom part in the vicinity of the center support.
- the mounting part extends at least partially parallel to the first and / or second boom segment and is deflected by means of the additional deflection roller to the center support out.
- at least one additional deflection roller is provided on the first and second boom part, which is mounted with the smallest possible distance to the central support on the respective boom part.
- the mounting part between the additional pulleys and the central support is reeved several times to further optimize or reduce the attacking holding forces during crane operation on the mounting part.
- the actuation of the mounting part is preferably carried out via an auxiliary winch.
- the auxiliary winch is arranged on the first jib part, particularly preferably in the region of the point of articulation between the first jib part and crane tower. With the help of the winch, the mounting part can be drained and thus unfolding the boom parts can be effected.
- the auxiliary winch is ideally equipped with a safety-related holding brake or alternatively with a locking device, which also during the Crane operation sufficient tension for the bracing of the crane boom is achieved.
- the use of an auxiliary winch with a holding brake allows the integration of a comparatively inexpensive monitoring electronics.
- the holding brake, in particular disc brake may be sensor-monitored, which is less complex and less expensive than an expensive pawl construction or other mechanical protection.
- the arrangement of the auxiliary winch is not necessarily on the first boom part.
- the auxiliary winch can also be mounted on the second boom part, in particular in the region of the outer end of the boom part.
- offers an external attachment of the auxiliary winch or the intake device of the mounting part for example on any crane component that is not attributable to the foldable crane boom. Possible would be the external mounting on the crane tower.
- the mounting part is guided by the intake device in the direction of the first jib part, the arrangement of one or more deflection rollers is expedient.
- the crane boom may further comprise a so-called neck bracing over which the boom is pulled into the operating position.
- the neck bracing absorbs deadweight and payload loads on the crane boom.
- the invention further relates to a crane, in particular a mobile construction crane, with a foldable boom according to the present invention or an advantageous embodiment of the present invention.
- the crane obviously has the same advantages and properties as the crane boom according to the invention, which is why a repetitive description is omitted here.
- the invention relates to the use of a jib mounting part for the bracing of a foldable crane jib during crane operation.
- the jib mounting part is necessary for folding jibs for assembly or disassembly.
- the mounting part was so far without Function.
- Essential to the invention is now that the boom mounting part is not relaxed during crane operation, but is used to brace at least one boom part and receives the attacking holding forces on the boom.
- FIG. 2 shows a first exemplary embodiment of the crane jib according to the invention
- Figure 4 a second embodiment of the crane boom according to the invention.
- Figure 5 a third embodiment of the crane boom according to the invention.
- FIG. 1 Reference has already been made to FIG. 1 in the introductory part of this description. Repeating explanations of the figure are therefore not considered necessary in this part of the description.
- FIG. 2 shows the simplest embodiment of the crane boom according to the invention.
- the crane jib comprises two jib parts 10, 20 connected to one another in an articulated manner.
- the first jib part 10 is connected to the crane tower at the ends via the articulation points 30.
- the middle support 40 is also pivotally mounted.
- FIG. 2 shows the crane boom in the deployed state, ie during crane operation with horizontal boom position.
- both jib parts 10, 20 can be folded around the articulated connection 12 against one another or folded together.
- the mounting part 50 is provided, that is fixed at the fixed point 52 to the winch 70 at the end.
- the mounting part 50 is guided starting from the auxiliary winch 70 via the tip of the central support 40 and a Seilümlenkrolle 60 provided thereon in the direction of the second boom part 20.
- the open end of the mounting part 50 is in the region of the boom tip of the second
- boom part 20 fixed in the fixed point 51.
- the mounting member 50 can be retracted, whereby both boom parts 10, 20 are pivoted against each other in the hinge point 12 upwards.
- the winch 70 can release the mounting member 50 to spend the boom members 10, 20 in their horizontal position for crane operation.
- the articulation of the boom parts 10, 20 is fixed for crane operation in the horizontal orientation.
- the mounting part 50 is loaded during crane operation with a tensile stress, so that the attacking holding force on the boom is partially absorbed by the mounting part 50 in function of a bracing.
- at least the elaborately constructed bracing 7 can be dispensed with by the present invention.
- FIG. 2 shows a winch 70 mounted on the first boom part 10. However, this can also be fastened without restriction to the second boom part 20, in particular in the area of the second cable tie point 51. The second rope fixed point 51 would then be provided inversely on the first boom part 10.
- the illustrated jib parts 10, 20 may be in one piece or composed of several individual components.
- the boom can handle more than two include parts.
- the central support 40 could be mounted on the first or second boom part 10, 20 instead of the connecting joint 12.
- auxiliary cables 80 which also contribute to the locking of the center support during crane operation in the illustrated vertical orientation.
- auxiliary ropes 80 a number of alternative solutions for erecting and locking the center support 40 are available, which can be easily reconciled with the inventive concept of the present invention.
- a safe threading of the mounting part 50 on the pulley 60 can be achieved by means of a construction in the form of a roping arm 100 according to Figure 3b.
- the Seilfangarm 100 comprises two obliquely upwardly from the pulley 60 extending walls 101, 102 which intersect in the region of the pulley 60 and form a V-shape.
- the approximating by the Entfaltvorgang the pulley 60 rope 50 can be better captured by the Seilfangarm 100 and are securely threaded on the pulley 60 during further deflation of the boom parts 10, 20.
- the central support 40 can be equipped with a telescopic mechanism, as indicated in sketchy way in the figure 3c.
- the pulley 60 can be tracked when unfolding the boom parts 10, 20 of the mounting part 50 so that it always remains in contact with the pulley 60.
- the embodiment according to Figure 3d offers.
- the center support 40 is equipped with a matching counter-roller 61 to the pulley 60.
- the mounting member 50 remains threaded both during crane operation and during transport to the center support 40.
- a disadvantage of this embodiment is that the necessary cable force for complete boom contraction increases because the lever arm L1 and L2 at the mounting end is very small (see Figure 3e).
- the fixed point 51 of the mounting member 50 on the second boom part 20 is not on the boom top but on the underside of the boom.
- Figure 3c may also comprise a counter-roller 61 as shown. However, the use of the counter-roll is optional and not mandatory.
- FIG. 4 a shows the crane boom according to the invention in the almost completely folded state
- FIG. 4 b depicts the crane boom in the almost completely unfolded state.
- the mounting member 50 is not fixed in the point 51 of the second crane arm part 20, but is instead guided over a guide roller 53 back to the central support 40 and fixed on the tip side fixed to the center support 40 at point 59.
- two further deflection rollers 54, 55 are provided, wherein in each case a deflection roller on the first and second boom part 0, 20 with the smallest possible distance A, A2 is secured to the central support 40.
- the cable guide of the mounting part 50 extends from the fixed point 52 on the winch 70 in the direction of the first guide roller 54 and is guided by this to the pulley 60 at the central support. This deflects the mounting part in the direction of the second guide roller 55 of the second boom part 20. Starting from the guide roller 55, the mounting part runs parallel to the boom 20 in the direction of the outer guide roller 53, which leads the mounting member 50 back to the central support 40.
- the crane boom can be pulled into the operating position.
- the neck bracing 110 captures deadweight and payload loads on the crane boom.
- the neck brace 110 includes deployable braces 111, 112 for receiving the bracing strand.
- the bracing stranding is subdivided into a first bracing 114, which extends from the brace 112 in the direction of the deflection roller 54 and is struck on the first crane boom part 10.
- the second brace 115 extends from the brace 112 toward the center support 40.
- the crane may be extended with another boom segment 130 hinged to the outer end of the second boom member 20.
- a further bracing stranding 117 is required, which would extend from the middle support 40 via a further support 116 to the further boom part 130.
- the distances A1, A2 between the pulleys 54, 55 and the middle support 40 are usefully to choose as small as possible. As a rule, the distance depends on the middle column height.
- the distances A1, A2 are expediently selected such that the cantilever center support 40 is pressed into the operating position during assembly of the cable pulley 60 and remains in this operating position with sufficient certainty.
- the distances A1, A2 should be set so that the lever arm L1 and L2 remains sufficiently large in all assembly phases, in particular during the assembly phase according to Figure 4a.
- the distance A3 between the guide roller 53 and the center support 40 should be chosen as large as possible in order to reduce the resulting tether force during crane operation as much as possible.
- the lever arm L3 is larger than the two lever arms L1, L2.
- the crimp arm of the jib part 20 is limited to a meaningful extent, in particular an output is made. cantilever beyond the tether, thereby minimizing boom steel weight.
- the deflection rollers 55, 53 fixed to the boom part 20 could also be combined to form a single deflection roller.
- this measure would lead to disadvantages in the Mittel Brinmontage or larger tether forces or a heavier boom steel.
- FIG. A last embodiment is shown in FIG. Compared to the figure 4, the mounting member 50 between the middle support 40 and the guide roller 53 and between the guide rollers 54 and the middle support 40 is reeved several times. For this purpose, additional deflection rollers 62, 58 on the central support 40 and on the boom part 10 are necessary. It makes sense that the number of Seileinscherept between the fixed roller 54 on the boom part 10 and between the fixed roller 53 and the middle support 40 is selected so that the mounting member 50 is similarly loaded in the crane assembly and crane operation. In addition, a multipleêtin réelle between the guide roller 55 and the central support 40 could be selected.
- the open end of the rope is fixed at the fixed point 51 to the guy support 1 2 of the neck brace 110.
- the attachment to the guy support 112 causes it during the Krandemontage by pulling the mounting member 50 is used on the crane boom 10.
- the middle support is no longer mounted in the pivot point 12, but is pivotally mounted on the boom part 10.
- the winch 70 is always attached to the first boom part 10.
- the cable entry system used for the folding of the jib parts 10, 20 can also be mounted on any other crane component, for example on the crane tower 150.
- the cable 50 is then usually fed via one or more additional pulleys in the region of the articulation point of the first boom folding part 10 at the crane tower.
- the mounting part 50 of the embodiments is always pulled on one side over the winch 70, while the open end is firmly connected to one of the crane arm parts.
- both ends of the rope can be pulled in or lowered via a cable retraction system.
- the exemplary embodiment illustrated in FIGS. 2 to 4 with two boom folding parts 10, 20 does not necessarily start at a crane tower.
- the two folding parts 10, 20 can also be located in a middle or end-side boom section of a multi-part boom folding system.
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 |
|---|---|---|---|
| DE102013006104.0A DE102013006104A1 (de) | 2013-04-09 | 2013-04-09 | Faltbarer Kranausleger und Kran |
| PCT/EP2014/000733 WO2014166581A1 (de) | 2013-04-09 | 2014-03-18 | Faltbarer kranausleger und kran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2984024A1 true EP2984024A1 (de) | 2016-02-17 |
| EP2984024B1 EP2984024B1 (de) | 2018-05-09 |
Family
ID=50389390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14713038.9A Active EP2984024B1 (de) | 2013-04-09 | 2014-03-18 | Faltbarer kranausleger und kran |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2984024B1 (de) |
| DE (1) | DE102013006104A1 (de) |
| WO (1) | WO2014166581A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020108747A1 (de) * | 2020-03-30 | 2021-09-30 | Liebherr-Werk Biberach Gmbh | Turmkran mit Hilfshubseil |
| JP7840640B2 (ja) * | 2020-04-16 | 2026-04-06 | タダノ デマグ ゲーエムベーハー | 車両クレーン及びそのジブへの荷重を低減する方法 |
| WO2022008023A1 (en) | 2020-07-09 | 2022-01-13 | Second Sun Aps | System for reflecting light down onto a field |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173628B (de) * | 1963-04-17 | 1964-07-09 | Wsesojuznij Nii Str I Doroshno | Turmdrehkran mit einem fuer den Transport zusammenlegbaren Ausleger |
| FR2303751A1 (fr) * | 1975-03-14 | 1976-10-08 | Noel Guy | Dispositif de depliage d'une fleche d'une grue de chantier depliable |
| ES473431A1 (es) * | 1978-09-16 | 1979-04-16 | Pingon Int | Perfeccionamientos introducidos en gruas plegables de monta-je rapido. |
| IT7921661U1 (it) * | 1979-05-24 | 1980-11-24 | San Marco Industrie Mecc Spa | Gru a torre telescopica con braccio snodato ad estensione automatica |
| JPS58195625A (ja) * | 1982-04-26 | 1983-11-14 | Hitachi Constr Mach Co Ltd | 作業機械のaフレ−ム |
| FR2548646B1 (fr) * | 1983-07-05 | 1985-12-13 | Cadillon | Grue repliable a deploiement rapide |
| DD253351A3 (de) * | 1985-12-10 | 1988-01-20 | Schwermasch Kirow Veb K | Stuetzeinrichtung fuer ausleger von kranen und baggern |
| EP0941958A1 (de) * | 1998-03-11 | 1999-09-15 | Gru Dalbe S.r.l. | System zur Verkleinerung der äusseren Abmessungen des Auslegers eines zusammenklappbaren Krans |
| DE29919790U1 (de) * | 1999-09-17 | 2000-04-27 | Liebherr-Werk Biberach GmbH, 88400 Biberach | Turmdrehkran |
| DE202007008990U1 (de) * | 2007-06-27 | 2008-11-06 | Liebherr-Werk Ehingen Gmbh | Teleskopausleger eines Krans |
-
2013
- 2013-04-09 DE DE102013006104.0A patent/DE102013006104A1/de not_active Withdrawn
-
2014
- 2014-03-18 WO PCT/EP2014/000733 patent/WO2014166581A1/de not_active Ceased
- 2014-03-18 EP EP14713038.9A patent/EP2984024B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014166581A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013006104A1 (de) | 2014-10-09 |
| EP2984024B1 (de) | 2018-05-09 |
| WO2014166581A1 (de) | 2014-10-16 |
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