WO2002100756A1 - Fahrzeugkran mit teleskopierbarem hauptausleger - Google Patents
Fahrzeugkran mit teleskopierbarem hauptausleger Download PDFInfo
- Publication number
- WO2002100756A1 WO2002100756A1 PCT/DE2002/002061 DE0202061W WO02100756A1 WO 2002100756 A1 WO2002100756 A1 WO 2002100756A1 DE 0202061 W DE0202061 W DE 0202061W WO 02100756 A1 WO02100756 A1 WO 02100756A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mobile crane
- main boom
- increasing device
- guy
- crane according
- Prior art date
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
- B66C23/62—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
Definitions
- the invention relates to a mobile crane with an undercarriage and a superstructure which is rotatably arranged on the undercarriage and which has a main boom formed from a basic box and a plurality of telescopic sections which are guided one inside the other and extendable from the basic box.
- the main boom is rotatably mounted on the superstructure about a horizontal axis and its inclination can be adjusted by means of a hydraulic luffing cylinder articulated on the superstructure and the basic box.
- the limitation of the permissible axle loads of the mobile crane during a road transport is a maximum permissible one
- the carrying capacity of the main boom, when the telescopic sections are extended, can be significantly increased compared to the state without a lifting device by means of a lifting device that is provided at least temporarily on the main boom.
- Such a crane is known for example from DE 31 13763 A1.
- the lifting capacity device used there consists of a rope bracing made of two ropes that are almost parallel to the load level, i.e. to the plane spanned by the hoist rope and the longitudinal axis of the main boom.
- the ropes are fastened in the area of the upper end of the extended main boom and are guided over a guy stand, which is directed upwards approximately perpendicular to the longitudinal axis of the main boom.
- the other end of the guying is attached to the base of the main boom.
- This bracing significantly increases the rigidity and buckling strength of the extended boom in the load plane. This significantly increases the load capacity of the main boom.
- a similar lifting capacity device in the form of a rope bracing is known from DE 198 02 187 A1.
- one end of the traction cable used for the guy is firmly connected to an auxiliary boom, which is at the head of the telescoped one Main boom is attached.
- the other end of the traction cable is in turn wound on a machine-operated cable drum, which is attached to a guy stand connected to the basic box of the telescopic boom.
- the traction rope is guided over a deflection roller at the top of the guy stand to the rope drum.
- the tip of the guy stand itself is connected to the foot of the base box of the telescopic boom by a part of the guy that has a fixed length.
- the entire guying therefore consists of a part of fixed length and a part of variable length. As a result, the length of the guying can easily be adjusted to the respective extension length of the telescopic boom.
- the guy stand is formed from two separate mast-like supports, both of which are set essentially perpendicular to the longitudinal axis of the telescopic boom, but which are attached to one another in a spread-apart manner, i.e. form an angle between them, for example in the range of 90 ° lies.
- the two supports of the guy stand do not point vertically upwards, but are directed obliquely upwards.
- a guy rope attached to the upper end of the telescopic boom is guided via a deflection pulley to a rope drum over both supports of the guy stand.
- the cable drum could also be arranged directly at the tip of the respective support, so that a deflection roller would be dispensed with.
- the upper end of the supports is in turn connected to the foot area of the telescopic boom by means of a fixed-length bracing. Due to the spreading of the two supports of the guy bracket, the two guy ropes run at an angle to each other outside the load level. In this way, a stabilizing effect for the telescopic boom can be achieved in two levels, namely on the one hand within the load level and on the other hand transversely to the load level. In contrast to the two aforementioned lifting capacity devices, stabilization is also achieved in the side area of the telescopic boom.
- the guy stand with rope drum and rope requires additional space on the telescopic boom, which is significantly reduced by the fact that the guy stand is designed to be foldable.
- this additional device also causes a considerable increase in weight.
- the boom weight in turn in the case of road transport of the respective mobile crane by limiting the permissible axle loads must not exceed a specified maximum limit
- road transport of a mobile crane with a telescopic boom, which is equipped with a pre-assembled lifting device in the form of a rope bracing is generally not permitted.
- the lifting capacity device has to be transported separately and installed on the respective construction site before the crane is used. A way out in this regard can occasionally be found in that one or more telescopic sections are temporarily removed from the boom in order to compensate for the weight increase by the lifting capacity increasing device.
- this has the disadvantage that the available maximum boom length is reduced accordingly.
- the object of the present invention is to improve a mobile crane of the generic type in such a way that the possible extension length for a given load capacity is increased significantly without an impermissible increase in the total boom weight and thus without exceeding the permissible axle loads, or for a given maximum extension length while observing the aforementioned boundary conditions, the permissible load capacity (Load capacity) is increased.
- the invention provides to provide the lifting capacity device, which was previously regularly installed as a special accessory on the mobile crane, as part of the standard basic equipment of the mobile crane, the maximum number of telescopic sections carried being permanently connected to the main boom.
- the weight of the lifting device is included in the main boom weight without exceeding the permissible maximum weight of the main boom without reducing the number of telescopic sections. This is possible because, in order to compensate for the weight of the payload increasing device, the individual weight of the telescopic sections is reduced in each case in such a way that the ratio of the head weight G ⁇ to the foot weight G of the fully extended main boom is at most 40:60.
- the head weight G « preferably makes up at most 38% of the total weight of the main boom.
- the ratio G ⁇ : G F is in the range from 40:60 to 30:70.
- the total weight of the main boom is kept constant, as it were, compared to a conventional design in that the increase in weight by the lifting capacity device is compensated for by a reduction in the weights of the individual telescopic shots.
- This reduction in weight of the individual telescopic sections can advantageously be achieved at least in part or entirely by reducing the wall thickness of the telescopic sections.
- the associated reduction in the load-bearing capacity must at least be compensated for again by the load-increasing device.
- the lifting capacity increasing device is preferably designed in such a way that it increases the rigidity of the main boom in the load plane. In this way, for example, a reduction in the height of the cross section and / or the wall thickness in the top flange and / or bottom flange of the telescopic weft profile can be compensated for.
- a lifting capacity device which is designed to increase the rigidity of the main boom across the load plane.
- a lifting capacity device which increases the rigidity of the main boom both in the load plane and transversely thereto.
- the carrying capacity increasing device is expediently designed in a manner known per se in the form of an anchoring which extends from the region of the upper end of the main boom to the region of the foot of the main boom.
- the upper attachment point of the guying does not have to be arranged at the outermost tip of the extended telescopic boom, but could also be connected, for example, to the collar of the penultimate or another telescoped telescopic section.
- Fastening point of the guying must not necessarily be attached to the outermost lower end of the boom foot. Other fastening points are also possible, for example in the area of the counterweights, which are usually fastened to the superstructure.
- the lifting capacity device designed as a rope bracing can be formed from a single strand.
- a mirror-image arrangement with regard to the load level is recommended, in that two separate guy lines are formed, which of course can in turn consist of a part of fixed length and a part of variable length.
- the Clamping bracket also has two separate guying supports, over which the guying is guided.
- the guy supports can be divided diagonally to one another, the included angle between their longitudinal axes being adjustable as possible as required. As a result, the degree of rigidity increase in the load plane and that across it can be varied. In this case, the degrees of stiffness change in opposite directions to each other.
- the invention provides for the rope drum or rope drums to be easily dismantled, so that the respective rope drum with the guy rope wound thereon can be carried separately.
- the weight of the main boom can be reduced below a critical limit if necessary, without the need for major set-up work on the construction site for the production of the operational capability of the mobile crane.
- the cable drum or cable drums can then be used again without any major effort.
- the present invention can be used with great advantage both in the case of smaller mobile cranes with e.g. three axes as with larger mobile cranes with z. B. use up to nine axes.
- FIG. 1 shows a mobile crane with the telescopic boom extended and the lifting capacity device
- 4 shows a telescopic boom with a lifting capacity device acting transversely to the load plane
- 5 shows a telescopic extractor with a load increasing device acting both in the load plane and transversely thereto
- the mobile crane shown in FIG. 1 has an undercarriage 20 which has a road chassis with eight axles.
- a superstructure 21 rotatable about a vertical axis is arranged.
- a main boom 22 is rotatably mounted on the superstructure 21 about a horizontal axis.
- the main boom 22 consists of a basic box 1 and a total of four telescopic sections 2 to 5 that can be telescoped from the basic box.
- the horizontal swivel joint is arranged at the foot of the basic box 1.
- the inclination of the main boom 22 can be changed in any manner by means of a hydraulic luffing cylinder 23.
- the main boom 22 is provided with a schematically illustrated load-increasing device 24, which has a guy stand 8, which is directed upward on the back of the base box 1 approximately perpendicular to the longitudinal axis of the main boom 22.
- Other essential parts of the lifting capacity device 24 are the lower guying 10, which extends from the base of the base box 1 to the tip of the guy stand 8, and the upper guy 11, which leads from the area of the upper end of the main boom 22 to the guy stand 8.
- the lower guying 10 which extends from the base of the base box 1 to the tip of the guy stand 8
- the upper guy 11 which leads from the area of the upper end of the main boom 22 to the guy stand 8.
- This part of the lifting capacity device can therefore also be composed of tie rods.
- a fixed rope length can also be used.
- the upper guying 11 is expediently designed as a rope guying, since then the greatest flexibility is given with regard to the respective extension length of the telescopic boom 22.
- the length of the upper guying 11 can easily be varied by means of a cable drum 9.
- the essence of the present invention is to be seen in the fact that, compared to a conventional design of the telescopic sections with comparable load capacities, the weights of the individual telescopic sections are reduced by the additional weight of a lifting device which is provided as standard on the main boom of the mobile crane and thus permanently with it is connected to compensate.
- This weight reduction in the telescopic sections leads to the distribution of the total weight of the telescopic boom on the Foot weight G F and head weight G ⁇ , as shown in Fig. 2, shifts compared to a conventional design.
- the ratio of the head weight G ⁇ to the foot weight G F is less than 40:60.
- the practical embodiments usually range in this range from 40:60 to 30:70.
- this ratio is, for example, about 38:62.
- FIG. 3 shows an extended telescopic boom of the type according to the invention, which is provided with a lifting capacity increasing device designed only as a quasi single-strand guying.
- the two strands of bracing 11 shown in dotted form run parallel to each other at a relatively short distance and therefore, like an actually single-strand bracing, cannot bring about stabilization transverse to the load plane.
- the guy stand stands vertically upwards on the longitudinal axis of the boom and lies within the load level. The latter also applies to the lower guying 10 and the upper guying 11.
- the cable drum at the upper end of the guy stand 8 is designated by the reference number 9. Due to its design, this lifting capacity increasing device can only increase the rigidity and kink resistance of the telescopic boom in the direction of the load plane.
- FIG. 4 shows a telescopic boom with a load increasing device which increases the rigidity of the main boom transversely to the load plane.
- the guy stand is formed from two guy supports 8a, 8b, which extend horizontally to the left or right from the basic box 1 of the telescopic boom to the outside. Accordingly, two separate strands are also provided for the guying, which are designated by the reference numerals 10a, 11a and 10b, 11b and whose function otherwise corresponds to the guying in FIG. 3.
- FIG. 5 Another variant of a lifting capacity increasing device is shown in FIG. 5.
- the guy stand is again made up of two guy supports 8a, 8b formed, which also extend perpendicular to the longitudinal axis of the telescopic boom to the left and right, but which enclose an angle between them, which is indicated by corresponding double arrows.
- the two guy supports 8a, 8b are spread apart upwards. This results in force components in the bracing in the direction of the load plane and transversely to it. Therefore, this type of lifting capacity device can increase the rigidity and kink resistance of the telescopic boom not only in the load plane but also across it.
- the angle between the two guy supports 8a, 8b can preferably be set to an angle in the range from 0 ° to 180 ° as required.
- FIG. 6 different profiles for profile shots are indicated schematically in the sub-figures a to e.
- the cross-sectional shape is essentially box-shaped, with the corners rounded. In the lower part of the profile, however, the radius of curvature is considerably larger than in the upper part of the profile.
- a cross section is shown, that of a conventional design of a
- Telescopic boom shot corresponds.
- the selected wall thickness has been deliberately exaggerated compared to an actual embodiment in order to better illustrate the direction of the deviations of a profile design according to the invention.
- Part b shows that the side walls are reduced in their wall thickness compared to the conventional shape a, as indicated by the arrows.
- the weakening of the wall thickness in the side areas is more than compensated for by a corresponding load-increasing device, so that an overall increase in the load capacity is achieved.
- Sub-figure c indicates that in addition to the side walls, the lower flange and the upper flange can also be subjected to a wall thickness weakening. It can be seen from sub-figure d that the weight reduction of the respective telescopic boom section can also be achieved by reducing the width of the profile. In the case of the partial figure e, this reduction in weight has been achieved by reducing the height of the profile.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/480,705 US7172082B2 (en) | 2001-06-11 | 2002-05-31 | Mobile crane with a telescopic main boom |
JP2003503531A JP2004528255A (ja) | 2001-06-11 | 2002-05-31 | 伸縮可能な主ジブを有する移動式クレーン |
EP02748566A EP1404606A1 (de) | 2001-06-11 | 2002-05-31 | Fahrzeugkran mit teleskopierbarem hauptausleger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128986A DE10128986A1 (de) | 2001-06-11 | 2001-06-11 | Fahrzeugkran mit teleskopierbarem Hauptausleger |
DE10128986.3 | 2001-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002100756A1 true WO2002100756A1 (de) | 2002-12-19 |
Family
ID=7688348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/002061 WO2002100756A1 (de) | 2001-06-11 | 2002-05-31 | Fahrzeugkran mit teleskopierbarem hauptausleger |
Country Status (5)
Country | Link |
---|---|
US (1) | US7172082B2 (de) |
EP (1) | EP1404606A1 (de) |
JP (1) | JP2004528255A (de) |
DE (1) | DE10128986A1 (de) |
WO (1) | WO2002100756A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006306546A (ja) * | 2005-04-27 | 2006-11-09 | Tadano Ltd | ジブ付きクレーン装置 |
JP2008247565A (ja) * | 2007-03-30 | 2008-10-16 | Tadano Ltd | 移動式クレーン |
ES2362387T3 (es) * | 2007-09-05 | 2011-07-04 | Palfinger Ag | Forma del perfil para un brazo de grúa. |
DE202008006167U1 (de) * | 2008-05-06 | 2008-07-17 | Terex-Demag Gmbh | Seitlich abgespannter Gittermast |
US8684197B2 (en) * | 2009-05-01 | 2014-04-01 | Manitowoc Crane Companies, Llc | Crane with boom raising assist structure |
US8579525B2 (en) | 2009-08-06 | 2013-11-12 | Chapman/Leonard Studio Equipment, Inc. | Hydraulic stop valve for a camera crane |
US8403486B2 (en) * | 2009-08-06 | 2013-03-26 | Leonard T. Chapman | Hydraulic shutoff control valve system for a camera crane |
CN101935999B (zh) * | 2010-08-09 | 2012-01-04 | 辽宁抚挖重工机械股份有限公司 | 强夯机前防倾装置 |
US9033165B2 (en) | 2011-02-09 | 2015-05-19 | Oshkosh Corporation | Crane assembly |
US9290363B2 (en) | 2011-07-21 | 2016-03-22 | Manitowoc Crane Companies, Llc | Tailor welded panel beam for construction machine and method of manufacturing |
CN102515039B (zh) * | 2011-11-21 | 2014-01-15 | 三一汽车起重机械有限公司 | 一种起重机及其超起装置 |
CN102659037B (zh) * | 2012-05-17 | 2014-01-01 | 中联重科股份有限公司 | 起重机超起装置及伸缩臂起重机 |
US8727318B2 (en) | 2012-07-19 | 2014-05-20 | Chapman/Leonard Studio Equipment, Inc. | Hydraulic float down valve for a camera dolly or camera crane |
DE102013005936A1 (de) | 2013-04-05 | 2014-10-09 | Liebherr-Werk Biberach Gmbh | Kran |
CN103407906B (zh) * | 2013-08-23 | 2015-10-28 | 徐州重型机械有限公司 | 一种超起装置及超起支腿 |
JP6335314B2 (ja) * | 2014-01-20 | 2018-05-30 | マニタウォック クレイン カンパニーズ, エルエルシーManitowoc Crane Companies, Llc | クレーンサスペンション組立体を支柱に接続するためのシステム及び方法 |
EP3489188B1 (de) * | 2014-03-03 | 2021-05-05 | Manitowoc Crane Companies, LLC | Längenverstellbares spannglied |
DE102015003982A1 (de) * | 2015-03-26 | 2016-09-29 | Liebherr-Werk Biberach Gmbh | Kranturm |
CN107091008A (zh) * | 2017-06-05 | 2017-08-25 | 国家电网公司 | 一种附着式自提升抱杆 |
IT201800007213A1 (it) * | 2018-07-16 | 2020-01-16 | Carlo Rosso | Braccio telescopico e veicolo semovente provvisto di tale braccio |
CN116835455B (zh) * | 2023-09-04 | 2024-01-19 | 河南省中原矿山设备有限公司 | 一种农田架设电力铁塔无障碍吊装装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3015599A1 (de) * | 1980-04-23 | 1981-10-29 | Peter Dipl.-Ing. Dr. 4000 Düsseldorf Eiler | Teleskopierbarer kranausleger |
DE3113763A1 (de) * | 1981-04-04 | 1982-10-28 | Mannesmann AG, 4000 Düsseldorf | "fahrzeugkran mit teleskopausleger" |
US4514939A (en) * | 1981-08-17 | 1985-05-07 | Fmc Corporation | Extensible boom with manual section stored in base |
DE20002748U1 (de) * | 2000-02-16 | 2000-08-03 | Liebherr-Werk Ehingen Gmbh, 89584 Ehingen | Fahrzeugkran |
EP1065166A2 (de) * | 1999-06-28 | 2001-01-03 | MANNESMANN Aktiengesellschaft | Teleskopkran |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3030820C2 (de) * | 1979-08-17 | 1987-01-29 | Coles Cranes Ltd., Sunderland, Tyne and Wear | Mobilkran mit einem Teleskopausleger |
GB2096097B (en) | 1981-04-04 | 1984-12-19 | Mannesmann Ag | Telescopic jib cranes |
DE19606109A1 (de) * | 1995-12-12 | 1997-06-19 | Liebherr Werk Ehingen | Fahrzeugkran |
DE19624312C2 (de) * | 1996-06-18 | 2000-05-31 | Grove Us Llc | Teleskopausleger für Fahrzeugkrane |
DE19802187C2 (de) | 1998-01-16 | 1999-11-25 | Mannesmann Ag | Vorrichtung zum Abspannen einer Superlift-Einrichtung eines Teleskopkranes |
DE10022658B4 (de) * | 1999-06-28 | 2007-10-04 | Terex-Demag Gmbh & Co. Kg | Teleskopkran |
-
2001
- 2001-06-11 DE DE10128986A patent/DE10128986A1/de not_active Withdrawn
-
2002
- 2002-05-31 EP EP02748566A patent/EP1404606A1/de not_active Withdrawn
- 2002-05-31 WO PCT/DE2002/002061 patent/WO2002100756A1/de not_active Application Discontinuation
- 2002-05-31 US US10/480,705 patent/US7172082B2/en not_active Expired - Fee Related
- 2002-05-31 JP JP2003503531A patent/JP2004528255A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3015599A1 (de) * | 1980-04-23 | 1981-10-29 | Peter Dipl.-Ing. Dr. 4000 Düsseldorf Eiler | Teleskopierbarer kranausleger |
DE3113763A1 (de) * | 1981-04-04 | 1982-10-28 | Mannesmann AG, 4000 Düsseldorf | "fahrzeugkran mit teleskopausleger" |
US4514939A (en) * | 1981-08-17 | 1985-05-07 | Fmc Corporation | Extensible boom with manual section stored in base |
EP1065166A2 (de) * | 1999-06-28 | 2001-01-03 | MANNESMANN Aktiengesellschaft | Teleskopkran |
DE20002748U1 (de) * | 2000-02-16 | 2000-08-03 | Liebherr-Werk Ehingen Gmbh, 89584 Ehingen | Fahrzeugkran |
Also Published As
Publication number | Publication date |
---|---|
JP2004528255A (ja) | 2004-09-16 |
US20040168997A1 (en) | 2004-09-02 |
EP1404606A1 (de) | 2004-04-07 |
DE10128986A1 (de) | 2002-12-19 |
US7172082B2 (en) | 2007-02-06 |
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