EP1153877B1 - Procédé et dispositif pour la simulation de charges sur des appareils de levage - Google Patents

Procédé et dispositif pour la simulation de charges sur des appareils de levage Download PDF

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Publication number
EP1153877B1
EP1153877B1 EP01420095A EP01420095A EP1153877B1 EP 1153877 B1 EP1153877 B1 EP 1153877B1 EP 01420095 A EP01420095 A EP 01420095A EP 01420095 A EP01420095 A EP 01420095A EP 1153877 B1 EP1153877 B1 EP 1153877B1
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EP
European Patent Office
Prior art keywords
balance
load
lifting
value
setting
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.)
Expired - Lifetime
Application number
EP01420095A
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German (de)
English (en)
French (fr)
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EP1153877A1 (fr
Inventor
M. Frédéric Dubois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manitowoc Crane Group France SAS
Original Assignee
Potain SA
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Publication date
Application filed by Potain SA filed Critical Potain SA
Publication of EP1153877A1 publication Critical patent/EP1153877A1/fr
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Publication of EP1153877B1 publication Critical patent/EP1153877B1/fr
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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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment

Definitions

  • the present invention relates to a method for the simulation of loads on hoisting equipment, in particular on tower cranes, in view of the adjustment of the load limiters of the hoist.
  • This The invention also relates to a device for implementing said method.
  • the invention applies to any lifting device equipped with a mechanism for winch hoist, the electric motor of which is controlled by a drive speed ensuring a regulation of the engine torque.
  • the purpose of the force limiters is to limit the forces due to the load suspended from the lifting hook, and applied to the structure of the crane, to acceptable values for which this crane is calculated and built.
  • a 10% safety margin is usually provided for take into account the accuracy of effort measurement systems, as well as that dynamic increases due to accelerations in lifting.
  • the order of the adjustment operations of the force limiters is established to ensure that the personnel performing the adjustments, as well as the material, against any possible wrong maneuver. Thus, we perform the adjustment of the moment limiters before that of the load limiters.
  • the load limiters are set at the start of the crane, at every change of configuration of the crane and also, generally, at least once a year as a periodic check.
  • EP 0866022 A gives an example of a method and test device, for tower crane, with use of a suspended load
  • this document does not detail the security settings.
  • the use of real charges is also recalled in the document DE 3644451 A ( Figure 1).
  • US 4509377 discloses a method for testing a hoisting apparatus such as crane or traveling crane, already providing for the use of a load cell mounted between the lifting hook and floor ; however, the process described in this document only serves to perform a load test, and it is not intended for a setting of the load and moment limitation.
  • US 4643031 discloses a test method for lifting apparatus such as bridges or gantry cranes, using a load cell mounted between the lifting hook and a structure secured to the hoisting apparatus, and also using a jack hydraulic system to simulate a load.
  • DE 2140779 A describes a method and a device for determining the limit loads, on cranes with a telescopic boom, again using a load cell associated with a hydraulic cylinder.
  • the document DE 3341414 describes a device for controlling overload safety devices, located between the lifting hook and a fixed point anchored to the ground, possibly replaceable by a mass of high value. These measures is not a peson giving a measure of effort but a mechanism to pin that is sheared beyond a certain value of tensile stress. Such a system does not provide convenient adjustment modes, such as those of the present invention.
  • the present invention aims to to overcome the need for real calibrated loads and / or cylinders hydraulics to adjust the load limiters on cranes in turn, and therefore to limit the handling of such loads, as well as the duration and cost of these adjustments, these being thus made particularly easy, while also allowing the adjustment of the moment limiters.
  • the peson is attached at one of its ends to a fixed point anchored to the ground or is moored, by this end, to the structure of the crane.
  • the scale is hooked, by one of its ends, to a free mass of a value greater than that of the maximum load at measure, so that this mass realizes the equivalent of a fixed point.
  • the other end of the scale is hooked to the lifting hook of the crane.
  • the method according to the invention may comprise the use of a direct reading scale, that is to say, a scale comprising on itself a means of displaying the tensile force exerted on this scale.
  • a direct reading scale that is to say, a scale comprising on itself a means of displaying the tensile force exerted on this scale.
  • an operator must be present near the load cell to read the displayed effort values and transmit them to another operator to make the adjustment, usually posted on the structure of the crane, especially at the level of the electrical control cabinet of the mechanism lifting.
  • the method which is the subject of the invention involves the use of a remote reading scale, that is to say a scale with means for remotely transmitting the tensile force values measured values, to a display box of the measured values which preference is placed within the immediate reach of the operator responsible for adjustment.
  • a remote reading scale that is to say a scale with means for remotely transmitting the tensile force values measured values, to a display box of the measured values which preference is placed within the immediate reach of the operator responsible for adjustment.
  • Loads suspended from the lifting hook transmit a Traction force proportional to the load, in the rope of the lifting cable from the drum of the hoist winch. This effort is transmitted to pulleys over which the cable passes, or drum.
  • the device measurement of effort is therefore located either at the level of the drum, which constitutes thus a weighing drum, either at the level of a cable pulley, which then constitutes a weighing pulley; this measuring device has a mechanical amplifier, which controls the limiters of charge.
  • these settings are, preferably, within reach minimum, that is to say with the axis of the lifting hook located closest to the base of the crane, and preferably also (in the case of number of strands modifiable for the hoisting rope) in hauling two strands, for which the forces due to acceleration are greater than in four-legged hauls or more.
  • the full setting still includes a setting of limit switches of the maximum load moment, and here it is recalled that the moment of the load is the product of the rolling load (trolley + mitt + hook + payload) by the distance between the point of origin of the constant moment, depending on the type of crane, and the axis of the hook.
  • Adjustment limit switches of the maximum load moment can theoretically for any load between the load maximum and the point load of the crane boom, within reach nominal value corresponding to this load, read on the load diagram. To make this adjustment, you can use the measurement process of a load using the load cell, as defined above.
  • the necessary device essentially comprises a load cell (direct reading or remote), used in combination with engine torque and cruise control, integrated or associated with the variable speed drive that drives the electric motor operating the winch hoist crane, with display means a process of adjustment of the load limiters, the load cell being designed to be mounted between lifting hook and a fixed point, the assembly making it possible to simulate a charge by generating a torque in the electric motor, while measuring the value of this load.
  • the display means include a keypad for displaying the "setting" mode by a code, for displaying a motor torque setpoint and, possibly for the control of the lifting movement in the direction from the ascent and descent.
  • Figure 1 shows a tower crane, with its base 1, its mast 2 and its dispensing arrow 3, along which moves a carriage 4.
  • the crane ensures the lifting of loads by means of a hook 5, linked to a muffle 6, and a hoisting rope 7 which forms at least two strands under the trolley 4, one of the strands of the cable 7 winding on the drum of a hoist winch 8.
  • the hoisting winch 8 is schematized, with its drum 9 driven in rotation from an electric motor 10, by through a gearbox 11.
  • the electric motor 10 is driven by a variable speed drive 12, which receives at an input a speed reference 13, provided by a control lever 14 of the "combiner" type.
  • a speed sensor 15, associated with the electric motor 10, supplies another input of the drive 12 with a speed feedback signal 16, and a subtractor 17 determines at all times the difference between the reference of speed 13 and the actual instantaneous speed, given by the return signal 16.
  • the electric motor 10 is driven via a regulation stage 18, and a power stage 19.
  • a torque limiting member 20 also acts on the stage of 18.
  • the member 20 comprises a control keyboard 21, and a display 22 indicating a code or a numerical value.
  • the device comprises a load cell 23, which in the example illustrated is a direct reading scale, that is to say that has, directly placed on it, a display 24 indicating the value of a tensile force F measured by this load cell 23.
  • the scale 23 is a remote reading scale, the measured value by this scale displayed on a remote box, within sight of the operator responsible for making the adjustment, that operator being posted at near hoist winch 8.
  • the load cell 23 is hooked, by its end upper 25, to the lifting hook 5.
  • the other end 26, or end bottom of the load cell 23 is fixed at a fixed point 27, anchored in the ground 28; in a variant not shown, this lower end 26 of the load cell 23 is attached to a free mass, but whose weight is greater than the effort to apply, so that this mass will not be raised and will constitute the equivalent of a fixed anchor point.
  • the adjustment process is initiated by displaying an access code, authorizing the takeover of the limitation of the torque delivered by the electric motor 10, and by validating the access code using the control keyboard 21 of the limiting device 20.
  • the adjustment process itself includes, in particular, the display operation on the display 22 of a limitation instruction of the torque of the electric motor 10, such as the control of this motor 10 with the pair thus determined simulates a load, in that the load 23 is subjected to a tensile force F corresponding to this pair.
  • the value of the tensile force F, indicated by the display 24 of the load cell 23, can then be read, and from there the adjustment process can be continued (according to the general description already given above).
  • This process can be controlled, with respect to the movement of lifting in the direction of ascent and descent, using the lever of existing order 14; in an advantageous variant, the control of the lifting movement in the direction of ascent and descent is provided by the control keyboard 21, which allows a command centralized for the entire adjustment process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
EP01420095A 2000-05-12 2001-04-24 Procédé et dispositif pour la simulation de charges sur des appareils de levage Expired - Lifetime EP1153877B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006097A FR2808877B1 (fr) 2000-05-12 2000-05-12 Procede et dispositif pour la simulation de charges sur des appareils de levage
FR0006097 2000-05-12

Publications (2)

Publication Number Publication Date
EP1153877A1 EP1153877A1 (fr) 2001-11-14
EP1153877B1 true EP1153877B1 (fr) 2004-05-26

Family

ID=8850171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01420095A Expired - Lifetime EP1153877B1 (fr) 2000-05-12 2001-04-24 Procédé et dispositif pour la simulation de charges sur des appareils de levage

Country Status (8)

Country Link
US (1) US6463812B2 (ru)
EP (1) EP1153877B1 (ru)
JP (1) JP2002003153A (ru)
KR (1) KR20010106221A (ru)
DE (1) DE60103451T2 (ru)
ES (1) ES2220694T3 (ru)
FR (1) FR2808877B1 (ru)
RU (1) RU2274599C2 (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743581A (zh) * 2013-12-06 2014-04-23 中联重科股份有限公司 内爬塔式起重机试验平台装置及试验方法
CN107381355A (zh) * 2017-05-26 2017-11-24 苏行 监测系统及其吊机控制方法和装置
CN109213002A (zh) * 2018-11-07 2019-01-15 武汉理工大学 一种非线性动态逆控制的变幅调速系统仿真模型及方法

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JP2002344736A (ja) 2001-05-21 2002-11-29 Oki Electric Ind Co Ltd プリント紙の原本保証システム，プリンタ装置，および，検証装置
US7190146B1 (en) 2003-08-18 2007-03-13 Magnetek, Inc. Control system and method for an overhead bridge crane
US7226037B2 (en) * 2004-08-25 2007-06-05 Key Energy Services, Inc. System for assuring engagement of a hydromatic brake on a drilling or well service rig
DK180175B1 (da) 2010-07-15 2020-07-15 Aip Aps System til indstilling af løftekapaciteten for et liftsystem
US20130079974A1 (en) * 2011-09-23 2013-03-28 Manitowoc Crane Companies, Llc Outrigger monitoring system and methods
US8686670B2 (en) * 2011-12-20 2014-04-01 Magnetek, Inc. Method and apparatus for calibrating and testing brake holding torque
US20130266917A1 (en) * 2012-04-10 2013-10-10 CAA South Central Ontario Method and kit for providing a training course for operating a towing device
DE102013205030B4 (de) * 2013-03-21 2015-10-22 Senvion Gmbh System und Verfahren zum Transportieren und Prüfen eines zur Verwendung bei einer Offshore-Windenergieanlage bestimmten Krans
CN103286783B (zh) * 2013-05-13 2015-11-25 西安电子科技大学 索牵引摄像机器人的运动速度控制方法
CN103323282A (zh) * 2013-07-03 2013-09-25 贵州大学 一种塔式起重机安全评估方法及其评估设备
KR101470457B1 (ko) * 2013-09-09 2014-12-12 우림기계(주) 랙과 피니언 시험 및 제동시험 장치
ITBI20130012A1 (it) * 2013-09-10 2015-03-11 Davide Gamba Metodo per determinare il momento ribaltante e la portata effettiva di una macchina per il sollevamento di carichi, e corrispondente test applicabile nel campo delle macchine e apparecchiature per il sollevamento di carichi
CN103728077B (zh) * 2014-01-24 2015-12-02 河南理工大学 锚杆锚固力测试仿真综合实验装置
JP6309854B2 (ja) * 2014-07-30 2018-04-11 株式会社神戸製鋼所 クレーン
DE102016204422A1 (de) 2016-03-17 2017-09-21 TÜV SÜD Industrie Service GmbH Vorrichtung und Verfahren zur Überprüfung einer Lastbegrenzungseinrichtung insb. von einer fördertechnischen Anlage
CN106092559A (zh) * 2016-08-24 2016-11-09 德马科起重机械有限公司 一种起重机检测实验平台
KR101849723B1 (ko) * 2018-01-04 2018-04-18 (주) 주연물산 와이어 형태의 폐금속 재생을 위한 중간 처리공정 및 처리장치
KR102032659B1 (ko) * 2018-12-19 2019-11-27 국방기술품질원 인양기 조립체 가속수명시험 장치 및 방법
CN113200477B (zh) * 2021-04-24 2022-07-01 长春汽车工业高等专科学校 一种运行稳定的汽车维修托举装置
CN114397182B (zh) * 2021-12-13 2024-05-17 上海江南长兴造船有限责任公司 一种用于y型吊环拉力试验装置及其测验方法
CN115417325B (zh) * 2022-08-25 2024-04-02 杭州大杰智能传动科技有限公司 一种基于受限空间内作业的塔式起重输运主机传动架构及工作方法

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743581A (zh) * 2013-12-06 2014-04-23 中联重科股份有限公司 内爬塔式起重机试验平台装置及试验方法
CN103743581B (zh) * 2013-12-06 2016-03-23 中联重科股份有限公司 内爬塔式起重机试验平台装置及试验方法
CN107381355A (zh) * 2017-05-26 2017-11-24 苏行 监测系统及其吊机控制方法和装置
CN107381355B (zh) * 2017-05-26 2019-05-03 苏行 监测系统及其吊机控制方法和装置
CN109213002A (zh) * 2018-11-07 2019-01-15 武汉理工大学 一种非线性动态逆控制的变幅调速系统仿真模型及方法
CN109213002B (zh) * 2018-11-07 2021-04-16 武汉理工大学 一种非线性动态逆控制的变幅调速系统仿真模型及方法

Also Published As

Publication number Publication date
RU2274599C2 (ru) 2006-04-20
FR2808877A1 (fr) 2001-11-16
JP2002003153A (ja) 2002-01-09
DE60103451T2 (de) 2005-06-23
ES2220694T3 (es) 2004-12-16
US6463812B2 (en) 2002-10-15
DE60103451D1 (de) 2004-07-01
FR2808877B1 (fr) 2002-07-12
EP1153877A1 (fr) 2001-11-14
KR20010106221A (ko) 2001-11-29
US20020011121A1 (en) 2002-01-31

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