EP3562775A1 - Hebezeug und verfahren zum anfahren des hubwerks eines solchen hebezeugs - Google Patents
Hebezeug und verfahren zum anfahren des hubwerks eines solchen hebezeugsInfo
- Publication number
- EP3562775A1 EP3562775A1 EP17823178.3A EP17823178A EP3562775A1 EP 3562775 A1 EP3562775 A1 EP 3562775A1 EP 17823178 A EP17823178 A EP 17823178A EP 3562775 A1 EP3562775 A1 EP 3562775A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hoist
- load
- starting
- lifting
- starting torque
- 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 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
- B66D1/46—Control devices non-automatic electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
- B66D1/505—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
Definitions
- the present invention relates to a hoist, for example in the form of a crane such as tower crane, with a hoist comprising a hoisting rope, which runs from a drum which is drivable by a hoist drive, and a hoist brake for holding the hoist rope in a braked position.
- the invention further relates to a method for starting the hoist of such a hoist from the braked position in which the hoist brake holds a hoisting load, being built by a hoist drive a starting torque against the closed hoist brake and the hoist brake is released during or after reaching the starting torque.
- the opening of the hoist brake poses a great challenge for the control technology in lifting gear of hoists and cranes.
- the hoist drive When the hoist brake is opened, the hoist drive must suddenly take over the load attached to the load hook.
- a predetermined starting torque is usually built up by the hoist drive before loosening the hoist brake against the closed brake, so that the hoist drive already provides a counteracting the load lifting force, when the hitch brake is released.
- the load nevertheless moves slightly upwards or slightly downwards, depending on whether the starting torque is greater or less than the torque induced by the lifting load.
- the control circuit of the hoist control must compensate for any upward and downward movements of the load until the load is held exactly in position.
- the motor torque is usually adjusted or adjusted so that unwanted up and down movements of the load hook and the load is held exactly in position via the frequency converter, with which the hoist drive is controlled.
- the present invention has for its object to provide an improved hoist and an improved method for starting the hoist of such a hoist from the braked position, avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.
- an opening of the hoist brake and a start from the braked position should be possible as possible without undesired load movements or with as little load movements as possible.
- the object is achieved by a method according to claim 1 and a hoist according to claim 7.
- Preferred embodiments of the invention are the subject of the dependent claims. It is therefore proposed not to build up a fixed predetermined starting torque before loosening the hoist brake, but to adjust the starting torque individually to the respectively attached load and load situation and to adjust it variably to deviations between the lifting force that provides the hoist by the starting torque, and the actually acting To eliminate or minimize the load.
- the hoist brake is closed by means of a load detection device detects the current lifting load and the starting torque is adjusted by the detected hoisting load of the hoist control so that the lifting force provided by the starting torque of the hoist corresponds to the detected, current lifting load.
- the hoist brake is then released after the hoist drive has built up the starting torque against the closed brake, the lifting load is balanced with the lifting force provided by the starting torque, so that undesired pendulum movements can be avoided.
- the starting torque By customizing the starting torque to different Hublastsituationen a much smoother approach can be achieved from the braked position. If a larger lifting load is attached to the load hook, a larger starting torque is provided. If, however, only a smaller lifting load is braked, a smaller starting torque is provided for starting.
- the detection of the current lifting load not only takes into account the net load taken on the load hook itself, but also accessory load influences such as the weight of the load hook and / or harness and the variable hoist weight depending on the unwound length. For example, if the load hook lowered by the crane boom, the weight fraction of the hoisting rope, which pulls on the cable drum as a load, much greater than in situations where the load hook is not or only slightly lowered and accordingly much rope is wound on the hoist drum.
- the load detection device of the hoist is designed such that the current hoisting load is the sum of appended load weight, Load hook weight and rope weight of the unwound, Hubseilin pulling on the hoist is detected.
- the load-detecting device may have a force-measuring shaft which is sunk into the hoisting cable of the hoisting gear and to which a load detector is assigned in order to detect the force acting on the swaged-in force measuring axis.
- said serrated force measuring axis may comprise a cable deflection roller whose articulation point is displaceable and held by a force measuring device.
- said deflecting roller can be held by a spring device, so that the distance measuring sensor can also detect the lifting load acting on the hoisting cable via the displacement against the spring force.
- directly measuring force gauges can also be used.
- the determination of the starting torque and the lever arm of the hoisting rope is taken into account with respect to the cable drum, in particular in the form of the number of located on the cable drum winding layers of the hoisting rope. If the hoist rope runs directly out of the creasing of the cable drum in the first winding layer, the lever arm is smaller than when it runs out of the second or third winding layer.
- a winding layer sensor can detect the number of winding layers from which the hoist rope runs, wherein the winding layer detection can also be determined indirectly from the length of the unwound rope, since the hoist control knows the rope length and accordingly, for example, from the unwound rope length and / or the load hook height the Winding layers or the lever arm can determine.
- the variably set starting torque can be calculated as a fraction of the rated motor torque of the hoist drive. From the calculated percentage of the rated motor torque, which is required as a starting torque to exactly compensate the lifting load, the hoist control can determine a start value for a frequency converter, via which the hoist drive is controlled. With the specified start value, the frequency converter then controls the hoist drive in such a way that when closed Brake as the starting torque of the desired fraction of the rated motor torque is built up.
- the starting torque can be established by initializing the speed controller against the still closed hoist brake.
- the lifting force provided by the starting moment compensates more or less precisely for the lifting load induced by the net load, load hook weight and rope weight of the unwound hoist rope length so that a smooth start can be achieved without oscillating the load.
- Fig. 1 a schematic representation of a hoist in the form of a
- the hoist 1 may be formed as a crane such as tower crane and include a tower 2, which carries a rotatable about an upright tower axis 4 boom 3, from which a load hook 7 can be lowered and raised. Said load hook 7 or a corresponding load harness is articulated to a hoist rope 6 of a hoist 8, wherein the hoisting rope 6 can be guided with the hooked thereto hook 7 via a trolley 5, which is movable along the boom 3.
- a crane such as tower crane and include a tower 2, which carries a rotatable about an upright tower axis 4 boom 3, from which a load hook 7 can be lowered and raised.
- Said load hook 7 or a corresponding load harness is articulated to a hoist rope 6 of a hoist 8, wherein the hoisting rope 6 can be guided with the hooked thereto hook 7 via a trolley 5, which is movable along the boom 3.
- the hoist 8 comprises a hoist drum 17, around which the hoist rope 6 is wound to be lowered and hauled.
- the named Hubtechniktrommel 17 can be rotationally driven by a Hubtechniksantneb 10, which may be electrically working, for example, may comprise an electric motor which rotatably drives the hoist drum 17 via a possibly intermediate gear.
- Said hoist drive 10 can advantageously be controlled by a hoist control 12 via a frequency converter 15, in particular in order to control or regulate the speed and the torque of the hoist drive 10.
- the hoist 8 comprises a hoist brake 9, by means of which a lifting load recorded on the load hook 7 can be held.
- the said hoist brake 9 can advantageously act on the hoist drum 17 or an associated transmission element or on the hoist drive 10 itself, wherein the hoist brake 9 may be formed as a friction brake and / or as a locking brake. When the hoist brake 9 is closed, the hoist drum 17 is blocked and thus the recorded load is held stationary.
- the hoist control 12 comprises a starting control stage 18, which is provided to provide a starting torque at hoist drive 10 still closed at Hubwerksantrieb 10 or build, which then 9 when loosening the hoist brake Lifting load intercepts and at best exactly compensated.
- a load detection device 1 1 is provided, by means of which the force acting on the cable drum 17 when the hoist brake 9 lifting load is detected, advantageously including the posted on the load hook 7 net load, the weight the load hook 7 itself and the proportion by weight of the unwound hoisting rope 6, which also tugs at the hoist drum 17 and depends on the unwound Hubseilulate or the sinking depth of the load hook 7.
- Said load detection device 1 1 advantageously comprises a force measuring axis 13, which is reeved in the hoist rope 6, wherein said force measuring axis 13 may comprise a deflection roller 20, whose articulation point in the direction of the reeving or the running Hubseiltrumme be displaced and connected to a load detector 14 or . can be in operative connection.
- said deflection roller 20 may be displaceable under spring bias, so that the displacement is a measure of the lifting load and the load detector 14 may be a path detector.
- a direct force meter can also be provided on the force measuring axis 13.
- Said force measuring axis 13 is advantageously assigned to a portion of the drainage path of the hoist rope 6, which is closer to the hoist drum 17 than the running and pulling with its weight on the hoist drum 17 cable sections, so that the weight of pulling on the hoist drum 17 cable sections in the Enter force measurement.
- the load detection device 1 1 is connected to the hoist control 12, which calculates the required starting torque from the currently detected lifting load value in order to exactly balance the respective lifting load.
- the hoist control 12 calculates the required starting torque from the currently detected lifting load value in order to exactly balance the respective lifting load.
- the starting torque is advantageously calculated exactly so that from the starting torque on the hoist drum 17, a lifting force can be induced in the hoist rope 6, which corresponds to the opposing force F of the lifting load.
- the said start-up control stage 18 of the hoist control 12 may have a starting torque setting device 19 which calculates the required starting torque in the form of a percentage value of the rated motor torque of the hoist drive 10 and determines from this percentage of rated motor torque a starting value for the frequency converter 15, so that the frequency converter drives the hoist drive 10 so controls that this builds the desired starting torque against the closed hoist brake 9.
- the speed controller for the transmitted torque value can be pre-initialized, so that the torque is still built up against the closed brake. If the built-up starting torque is the same as the torque caused by the lifting load, the brake is opened so that both torques equalize and no undesired load hook movement occurs.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
- Invalid Beds And Related Equipment (AREA)
- Coating With Molten Metal (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017001238.5A DE102017001238A1 (de) | 2017-02-09 | 2017-02-09 | Hebezeug und Verfahren zum Anfahren des Hubwerks eines solchen Hebezeugs |
PCT/EP2017/084741 WO2018145806A1 (de) | 2017-02-09 | 2017-12-28 | Hebezeug und verfahren zum anfahren des hubwerks eines solchen hebezeugs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3562775A1 true EP3562775A1 (de) | 2019-11-06 |
EP3562775B1 EP3562775B1 (de) | 2023-05-10 |
Family
ID=60915547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17823178.3A Active EP3562775B1 (de) | 2017-02-09 | 2017-12-28 | Hebezeug und verfahren zum anfahren des hubwerks eines solchen hebezeugs |
Country Status (8)
Country | Link |
---|---|
US (1) | US11027951B2 (de) |
EP (1) | EP3562775B1 (de) |
CN (1) | CN110494384B (de) |
BR (1) | BR112019016414A2 (de) |
DE (1) | DE102017001238A1 (de) |
DK (1) | DK3562775T3 (de) |
ES (1) | ES2948608T3 (de) |
WO (1) | WO2018145806A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017001238A1 (de) | 2017-02-09 | 2018-08-09 | Liebherr-Components Biberach Gmbh | Hebezeug und Verfahren zum Anfahren des Hubwerks eines solchen Hebezeugs |
WO2021079642A1 (ja) * | 2019-10-21 | 2021-04-29 | 株式会社キトー | 巻上機および巻上機の駆動制御方法 |
CA3227097A1 (en) * | 2021-07-30 | 2023-02-02 | Infravision Holdings Pty Ltd | Cable winch |
DE102022106450A1 (de) | 2022-03-18 | 2023-09-21 | Liebherr-Werk Biberach Gmbh | Hebezeug und Verfahren zum Anfahren des Hubwerks eines solchen Hebezeugs |
CN115159366B (zh) * | 2022-07-26 | 2023-09-01 | 江苏新均力重工有限公司 | 一种大型钢结构支架悬吊施工设备及吊装方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE883057C (de) | 1942-05-08 | 1953-07-13 | Maschf Augsburg Nuernberg Ag | UEberlastungssicherung fuer Schmiedekrane u. dgl. |
US2746583A (en) * | 1952-12-15 | 1956-05-22 | American Blower Corp | Crane hoist mechanism |
DE1181883B (de) | 1962-01-23 | 1964-11-19 | Thaelmann Schwermaschbau Veb | Steuerung fuer Krane |
DE2231997C3 (de) | 1972-06-29 | 1980-12-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Einrichtung zur Aufrechterhaltung eines zwischen zwei miteinander verknüpften Kranbewegungen bestehenden Verhältnisses |
US4113237A (en) * | 1975-10-28 | 1978-09-12 | D. G. Beyer, Inc. | Cable tension control |
JPH0789750B2 (ja) * | 1986-04-10 | 1995-09-27 | 株式会社安川電機 | クレ−ン用v/fインバ−タ制御方法 |
CN1011401B (zh) * | 1986-08-07 | 1991-01-30 | 大连理工大学 | 二次提升防止下滑液压***装置 |
DE9315641U1 (de) | 1993-10-14 | 1993-12-16 | Höhn, Carsten, Dipl.-Ing, 28832 Achim | Zusatzeinrichtung an mechanischen Bremsen für rotatorische Bewegungen |
EP0779239B2 (de) * | 1995-12-13 | 2006-09-13 | Liebherr-Werk Ehingen GmbH | Steuervorrichtung für ein Hubwerk eines Krans |
DE19612570C2 (de) * | 1996-03-29 | 2003-08-28 | Bosch Rexroth Ag | Einrichtung zur Dämpfung der Schwingungen eines Seil-Masse-Systems |
DE19956265B4 (de) | 1999-11-23 | 2005-06-30 | Liebherr-Werk Ehingen Gmbh | Vorrichtung zur Überwachung des Betriebs von Hubwinden |
FI20002084A0 (fi) * | 2000-09-21 | 2000-09-21 | Kci Kone Cranes Int Oy | Menetelmä nosturin jarrun toiminnan valvomiseksi |
FI115155B (fi) * | 2001-04-05 | 2005-03-15 | Kci Kone Cranes Int Oy | Vääntömomentilla avautuva levyjarry |
WO2006074250A2 (en) * | 2005-01-06 | 2006-07-13 | Quoin International, Inc. | Powered personnel ascender |
FI120070B (fi) * | 2007-10-01 | 2009-06-15 | Kone Corp | Sähkökäytön annon rajoittaminen sekä hissin suojaus |
CN102040161B (zh) * | 2010-04-01 | 2012-01-11 | 长沙中联重工科技发展股份有限公司 | 起重机的防二次起升下滑***以及防二次起升下滑方法 |
JP5768552B2 (ja) * | 2011-07-15 | 2015-08-26 | 東芝三菱電機産業システム株式会社 | 荷役用クレーンの走行制御装置 |
JP6325801B2 (ja) * | 2013-11-20 | 2018-05-16 | 株式会社神戸製鋼所 | 電動ウインチ装置 |
DE102014101654B4 (de) * | 2014-02-11 | 2017-10-05 | Konecranes Global Corporation | Hebezeug mit Hysteresekupplung |
DE102017001238A1 (de) | 2017-02-09 | 2018-08-09 | Liebherr-Components Biberach Gmbh | Hebezeug und Verfahren zum Anfahren des Hubwerks eines solchen Hebezeugs |
KR102036031B1 (ko) * | 2017-03-06 | 2019-10-25 | 엘에스산전 주식회사 | 인버터 제어장치 |
-
2017
- 2017-02-09 DE DE102017001238.5A patent/DE102017001238A1/de not_active Withdrawn
- 2017-12-28 BR BR112019016414A patent/BR112019016414A2/pt active Search and Examination
- 2017-12-28 WO PCT/EP2017/084741 patent/WO2018145806A1/de unknown
- 2017-12-28 DK DK17823178.3T patent/DK3562775T3/da active
- 2017-12-28 ES ES17823178T patent/ES2948608T3/es active Active
- 2017-12-28 CN CN201780089391.0A patent/CN110494384B/zh active Active
- 2017-12-28 EP EP17823178.3A patent/EP3562775B1/de active Active
-
2019
- 2019-08-05 US US16/531,936 patent/US11027951B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20200017340A1 (en) | 2020-01-16 |
EP3562775B1 (de) | 2023-05-10 |
DK3562775T3 (da) | 2023-06-26 |
WO2018145806A1 (de) | 2018-08-16 |
BR112019016414A2 (pt) | 2020-04-07 |
CN110494384B (zh) | 2021-06-01 |
DE102017001238A1 (de) | 2018-08-09 |
CN110494384A (zh) | 2019-11-22 |
ES2948608T3 (es) | 2023-09-14 |
US11027951B2 (en) | 2021-06-08 |
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