EP2915768A1 - Portalkran - Google Patents
Portalkran Download PDFInfo
- Publication number
- EP2915768A1 EP2915768A1 EP15000615.3A EP15000615A EP2915768A1 EP 2915768 A1 EP2915768 A1 EP 2915768A1 EP 15000615 A EP15000615 A EP 15000615A EP 2915768 A1 EP2915768 A1 EP 2915768A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- girder
- carriage
- gantry crane
- fact
- girders
- 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.)
- Withdrawn
Links
- 230000000295 complement effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/005—Straddle carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/02—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries collapsible
Definitions
- the field of the invention involves the wheeled gantry bridge crane sector.
- the structure practically imitates the layout of the gantry structures that slide on tracks, with the difference being that the legs have wheels that swivel around its axis and steering.
- a pair of parallel girders joining the legs is applied the carriage with a hoisting hook.
- Said carriage can run along the entire runway beam.
- the boxed runway girder is telescopic, allowing the carriage to be able to change the wheelbase of the structure.
- the hook carriage continues to slide on the outside of the boxed runway girder but it cannot, given the different size of the cross-section, slide on the telescopic extension of the joining girder. Sometimes this necessitates lifting the loads where the cord of the hoisting hook is not vertical, but inclined.
- the main object of this invention is to make available a gantry bridge crane that can overcome all the drawbacks of the prior art.
- An important object of this invention is to make available a wheeled gantry bridge crane that can easily vary the wheelbase/track for moving the load.
- a further object of this invention is to make available a wheeled gantry bridge crane that can exploit the entire extension of the wheelbase/track.
- Another object of this invention is to make available a wheeled gantry bridge crane that can easily lift loads even in an inclined direction.
- a gantry bridge crane that includes an extendable frame equipped with a first girder connected in a moveable manner to a second girder to vary, based on the degree of connection, the track of said crane, and at least one mobile carriage with a lifting hook, where said mobile carriage slides on a main carriage fitted with at a first end with a first joint with the first girder, and a second end with a second joint with the second girder.
- said main carriage has a length of about half the first girder, allowing the hook to be positioned for lifting, following the shifting and/or on the main carriage on the girders of the frame and/or the smaller carriage on the main carriage for the entire extension of the track of the gantry crane.
- At least said first girder or at least said second girder is of the box girder variety.
- said first girder or at least said second girder has a circular cross-section.
- Another advantage is that the mobile coupling between said first girder and said second girder is telescopic in nature, making the system simple, safe and reliable and requiring little maintenance. Another advantage comes from the adoption of a coupling between said first and said second girder is coaxial in nature, thereby facilitating the extension in alignment.
- the cross-section of the first and second girder is circular, making it easy to install and in combination with special supports of the carriage also allowing the carriage itself to rotate around the vertical for lifting loads with the cord of the hook inclined, without this resting or scraping against the structure of the girder or getting worn because of the erroneous inclination angle.
- the resistant section and the moment of inertia of the circular girders are identical for any orthogonal stress on the main axis of the girders themselves.
- the support points of the main carriage on the circular-section girders are rollers with integrated concavities in the middle with a semi-circular generatrix that allow the main carriage to move along the axis of the circular-section girders and to vary the rotation of the main carriage by modifying the inclination of the pull angle of the load hook cable.
- rollers have a concave shape complementary to the cross-section of the girders.
- the travel of the carriage on the girder of the frame and of the smaller carriage on the main carriage is practically equal to the minimum to the maximum travel of the telescoped part of the circular-section or boxed girder on the circular girder or boxed girder of the frame.
- gantry bridge cranes are structured with a quadrangular frame supported at the top by four legs.
- the hoisting mechanism composed of a hook held by a cord, which is lifted and collected around a drum that is made to turn, by means of a gear unit and a motor, which can be either electric or hydraulic.
- Said frame of the prior art is fixed and does not have a variable track.
- some bridge gantry cranes have a frame that has a slightly variable track.
- bridge gantry crane 1 which is the object of the invention, shown in the drawings, is structured as a frame 2 supported at the top by four legs.
- a first pair of girders 14, parallel and opposite the above-mentioned frame 2, has a fixed length.
- a second pair of girders 4 opposite the above-mentioned frame 2, and orthogonal to the first pair of girders 14, has the possibility of varying the track.
- the variation of the track for each single girder 4 connecting a pair of legs 3 is made by a first 5 and a second girder 6 that are coaxial and telescoped between themselves.
- This circular section also facilitates the installation, but above all it allows the smaller carriage 8 with the cord 16 that is inclined with respect to the vertical to be used to lift loads that are not under the vertical of the girders themselves.
- the length of the first outer girder 5 with respect to the second inner girder 6 is roughly equal.
- said main carriage 7 can position itself according to the modes set out above, bringing itself from one end to the other of the span formed by the girders 4, both when they are in a compact state and also when they are in an extended position, this is how the track of the gantry crane 1 is always ready to be used in its entirety.
- the smaller mobile carriage 8 is free to move along the guides13 of the main carriage 7 to move the load hook 11 using the relative cord 16.
- This useful characteristic in combination with the support rollers 12, 15 of the carriage 7 configured in a complementary manner, with a concave semi-circular section, allows the carriage 7 to move along the main axis of the girders 4, bringing the hook 11 into the desired position.
- the carriage 7 can rotate around the main axis of the girder 4 of the frame 2, making it possible to load with the inclined cords 16 without causing any damage due to dragging or the like.
- the carriage 7 starts to rotate and change its rotation following the raising of the load, however keeping the cords 16 always subject to a pulling action, without other components.
- the connecting girder 4 which has a moment of inertia that is identical for any axis that is orthogonal to the main one, keeps the identical capacity under any load condition, both in the vertical and with the load inclined.
- connection girder 4 of the legs 3 composed of a first girder 5 and a second girder 6, telescoped between themselves, and preferably with the second girder 6 arranged internally and coaxially to the first girder 5.
- the extension of this connection girder 4 can, therefore, reach a length of approximately double that of the two parts of the girder (first girder 5 plus the second girder 6), reaching a track that is double that of the length of the individual parts.
- the main carriage 7 in this case will have a first support with its support roller 12 at one of its ends 9 on the outer girder 5 and a second support at its opposite end 10 on the inner girder 6.
- said carriage 7 has another track, fitted with guides 13, on which a smaller carriage 8 moves that supports the loading hook 11.
- the carriage 7 with an extension roughly the same as one of the girders 5, 6 can move freely when the telescoped girder 4 is extended to its maximum length, where the two points of support 9, 10 on rollers 12 and 15 are able to slide freely on different sections of the respective girders 5, 6, since said sliding rollers 12, 15 have a suitable section, and providing the smaller carriage 8 with a track with guides 13 roughly the same as its own length.
- the smaller carriage 8 can reach any point of the span of the bridge crane 1, both in a reduced configuration and in an expanded configuration, exploiting both the length of the track of the carriage 7, on whose guides 13 it can move between the two support ends 9, 10, and maintaining the same supports 9, 10 on the sections with a different diameter between the main outer girder 5 and the coaxial telescopic girder 6 inside the main girder 5.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD20140050 | 2014-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2915768A1 true EP2915768A1 (de) | 2015-09-09 |
Family
ID=50693851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15000615.3A Withdrawn EP2915768A1 (de) | 2014-03-04 | 2015-03-03 | Portalkran |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2915768A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106114907A (zh) * | 2016-08-19 | 2016-11-16 | 北京精密机电控制设备研究所 | 一种火箭舱段紧凑空间内伺服机构安装装置及安装方法 |
CN106429830A (zh) * | 2016-10-31 | 2017-02-22 | 北京环境特性研究所 | 一种龙门吊全方位转向装置及方法 |
CN107381367A (zh) * | 2017-08-24 | 2017-11-24 | 安徽骏达起重机械有限公司 | 移动式轻型组合式悬挂起重机 |
CN110980539A (zh) * | 2019-12-24 | 2020-04-10 | 金鹏装配式建筑有限公司 | 一种混凝土构件起吊机 |
IT201800021166A1 (it) * | 2018-12-27 | 2020-06-27 | Cesare Bonfiglioli | Apparato per la movimentazione di container |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1427076A (fr) * | 1964-12-08 | 1966-02-04 | France Neige | Portique de manutention |
GB1212425A (en) * | 1967-05-12 | 1970-11-18 | Gordon Reginald Himsworth | Mobile gantry frames |
FR2420502A1 (fr) * | 1978-03-23 | 1979-10-19 | Alsthom Cgee | Organe support d'une poutre pour un portique mobile |
WO2003068650A2 (en) * | 2002-02-14 | 2003-08-21 | Steven Morreim | Mobile lift |
EP2479132A2 (de) * | 2010-11-29 | 2012-07-25 | Herbert Theuerer | Ladekran und Fahrzeug mit Ladekran |
-
2015
- 2015-03-03 EP EP15000615.3A patent/EP2915768A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1427076A (fr) * | 1964-12-08 | 1966-02-04 | France Neige | Portique de manutention |
GB1212425A (en) * | 1967-05-12 | 1970-11-18 | Gordon Reginald Himsworth | Mobile gantry frames |
FR2420502A1 (fr) * | 1978-03-23 | 1979-10-19 | Alsthom Cgee | Organe support d'une poutre pour un portique mobile |
WO2003068650A2 (en) * | 2002-02-14 | 2003-08-21 | Steven Morreim | Mobile lift |
EP2479132A2 (de) * | 2010-11-29 | 2012-07-25 | Herbert Theuerer | Ladekran und Fahrzeug mit Ladekran |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106114907A (zh) * | 2016-08-19 | 2016-11-16 | 北京精密机电控制设备研究所 | 一种火箭舱段紧凑空间内伺服机构安装装置及安装方法 |
CN106429830A (zh) * | 2016-10-31 | 2017-02-22 | 北京环境特性研究所 | 一种龙门吊全方位转向装置及方法 |
CN107381367A (zh) * | 2017-08-24 | 2017-11-24 | 安徽骏达起重机械有限公司 | 移动式轻型组合式悬挂起重机 |
IT201800021166A1 (it) * | 2018-12-27 | 2020-06-27 | Cesare Bonfiglioli | Apparato per la movimentazione di container |
WO2020136472A1 (en) * | 2018-12-27 | 2020-07-02 | Cesare Bonfiglioli | Apparatus for moving containers |
CN110980539A (zh) * | 2019-12-24 | 2020-04-10 | 金鹏装配式建筑有限公司 | 一种混凝土构件起吊机 |
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