WO2016203165A1 - Procédé de définition d'une courbe de charges optimisée pour grue, procédé et dispositif de contrôle pour contrôler la charge suspendue à une grue à partir de la courbe de charges optimisée - Google Patents
Procédé de définition d'une courbe de charges optimisée pour grue, procédé et dispositif de contrôle pour contrôler la charge suspendue à une grue à partir de la courbe de charges optimisée Download PDFInfo
- Publication number
- WO2016203165A1 WO2016203165A1 PCT/FR2016/051469 FR2016051469W WO2016203165A1 WO 2016203165 A1 WO2016203165 A1 WO 2016203165A1 FR 2016051469 W FR2016051469 W FR 2016051469W WO 2016203165 A1 WO2016203165 A1 WO 2016203165A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- stresses
- range
- theoretical
- crane
- Prior art date
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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
- B66C23/16—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
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
Definitions
- the present invention relates to a defining method for defining a load curve for a crane.
- the present invention relates to a method and a control device for controlling the load suspended on a crane.
- the present invention applies to the field of boom cranes.
- the present invention can be applied to several types of cranes, for example to distribution boom cranes, luffing jib cranes and self-erecting cranes, these cranes having or without shrouds.
- the present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
- the subject of the present invention is a definition method, for defining a load curve for a crane, the definition method comprising the steps of:
- a lifting member which is configured to lift a load and which is movable along the boom successively in several spans
- such a definition method makes it possible to define an optimized load curve in each selected range, that is to say a point-to-point optimized load curve.
- a definition method makes it possible to use the boom to the maximum of its capacities whatever the range at which the load is raised.
- this definition method makes it possible to use the arrow with a load inducing a predetermined maximum stress on at least one element of the structure. In other words, at least one element of the structure is used to the maximum of its capacity.
- Such a definition method makes it possible to define an optimized load curve for an existing crane.
- Such a definition method also makes it possible to dimension an arrow during the design of the arrow, that is to say to select the dimensions of several elements of the structure of the arrow before making this arrow.
- the definition process is then part of a sizing process.
- stress means a mechanical stress, that is to say a force exerted on a surface.
- computed stress designates the constraint calculated for a theoretical load considered suspended from the lifting member (simulation).
- a constraint may be calculated in accordance with a standard and / or directive that applies in the territory in which the crane is to operate. For example, Machine Directive CE-89/392, Standard FEM.1 .001 and Standard EN14439 apply in Europe.
- the predetermined maximum stresses may be imposed by a standard and / or an applicable directive.
- a standard or directive imposes permissible stresses that must not be exceeded, by applying, where appropriate, a factor of safety to the elastic limit of the material in question.
- the predetermined maximum stresses can be set by the crane designer or the crane user more strictly than the applicable standard or guideline.
- the predetermined maximum stresses can be calculated so as not to exceed maximum forces in static stress and / or not to exceed the amplitudes of maximum forces necessary for the fatigue analyzes.
- a definition step consists in defining a load curve indicating the theoretical loads found as a function of the selected ranges.
- the simulation step implements a computer-assisted design software to design the boom.
- the load curve may include the mass of the carriage, the mass of the hook, the mass of the muffle, the mass of the cable and the mass of the actuator configured to drive the cable and / or the carriage.
- the load curve directly indicates the payload that the boom can lift.
- the structure comprises a lattice, the elements comprising bars arranged to form the lattice.
- the structure may comprise a box, said elements comprising plates arranged to form the box.
- Each plate forms a structural element, that is to say an element of the structure.
- the box may be formed of several sections assembled together so as to compose the arrow.
- a part of the elements is selected. In other words, one selects several elements but not all the elements of the structure. Then, perform the analysis steps on the elements to be tested that have been selected. Thus, such a selection step limits the number of calculations to be made during the analysis steps. For example, 80% or 90% of the bars forming the lattice of an arrow can be selected.
- the staves are selected in a regular distribution along the arrow.
- the spans are spaced two by two by an interval of between 0.5% and 10%, preferably between 1% and 2%, of the length of the arrow.
- the staves can be selected in an irregular distribution along the arrow.
- the interval between two small litters may be relatively large, while for a set of large litters, the interval between two large litters may be relatively small.
- the number of analysis steps necessary to define a load curve is reduced.
- the definition method further comprises an interpolation step, in which the theoretical charges found for the different ranges are interpolated so as to define the charge curve.
- an interpolation step makes it possible to limit the number of calculations necessary to define a charge curve.
- calculated stresses are calculated for a biasing mode selected from the group consisting of traction, shear, compression, buckling, torsion and bending.
- the predetermined maximum stresses may arise from different modes of loading, for example a traction mode, a shear mode, a compression mode including a buckling mode, a bending mode, a torsion mode, or a combined mode of at least two of these different modes of stress.
- calculated stresses can be calculated for all these modes of stress: tensile, shear, compression, buckling torsion and / or flexion.
- several predetermined maximum constraints corresponding to the selected modes of loading are selected.
- each predetermined maximum stress is selected to be between 90% and 100% of a respective allowable stress.
- each predetermined maximum stress is selected so as to achieve, for each element, a utilization rate of between 90% and 100%.
- utilization rate designates the ratio between a stress applied to an element and the admissible stress for this element, which is for example imposed by a standard or directive.
- the analysis steps are initially performed for the largest range selected, so as to first find the theoretical load for the largest range selected,
- the theoretical load is selected inducing, around an end of the arrow opposite the largest range, a moment equal to the moment induced by the theoretical load found for the largest range selected.
- control method for controlling the load suspended on a crane, the control method comprising the steps of:
- a crane comprising at least:
- a lifting member which is configured to lift a load and which is movable along the boom successively in several spans
- an evaluation device configured to evaluate a magnitude representative of the load suspended from the lifting member
- a measurement device configured to measure a magnitude representative of the instantaneous range
- control device comprising a memory containing the charge curve defined according to a definition method according to the invention
- control device control signals intended to control at least one movement of the lifting member among: i) a lifting movement to lift a target load and ii) a dispensing movement to move the lifting member to a target scope,
- the restriction step comprises: i) a prevention step in which said at least one movement of the lifting member is prevented, and ii) a warning step in which the control device communicates a passing warning warning that the target load is excessive for the target range.
- the restriction step may comprise: i) a limiting step in which the lifting member is moved to a range below the target range.
- a limitation step allows only partially to allow a movement of the suspended load to the extent permitted by the load curve.
- the evaluation device comprises at least one measuring device selected from the group consisting of an electronic encoder and a displacement potentiometer.
- control device comprising:
- a calculation unit configured to perform a control method according to the invention.
- control device may belong to the crane.
- control device can be integrated with a crane control system, which can be installed in a crane control cabin.
- the present invention also relates to a crane comprising a control system, the control system incorporating such a control device.
- control device may be remote from the crane.
- the control device can be integrated into a remote control configured to control the crane from the ground.
- the subject of the present invention is a crane comprising such a control device.
- FIG. 1 is a diagrammatic view illustrating a portion of a crane comprising a control device implementing a control method in accordance with the invention, from a load curve defined according to a method of definition in accordance with FIG. invention;
- FIG. 2 is a flowchart illustrating a definition method according to the invention
- Figures 3 and 4 are schematic views illustrating the arrow of Figure 1 respectively during two steps of the definition process of Figure 2;
- FIG. 5 is a diagram representing a defined load curve according to the definition method of FIG. 2;
- Figure 6 is a view of a control method according to the invention.
- FIG. 7 is a view of a control device according to the invention and configured to implement the control method of Figure 6.
- FIG. 1 illustrates a crane 1 comprising an arrow 2 and a tower 3 which supports the arrow 2.
- the arrow 2 is articulated with respect to the tower 3 especially around an axis 2.3.
- the arrow 2 comprises a structure 4.
- the structure 4 is composed of several elements 5. Each element 5 forms a structural element, that is to say an element of the structure 4.
- the structure 4 comprises a lattice and the elements 5 comprise bars arranged to form this lattice.
- Each element 5 is here a section of the structure 4 comprising several bars.
- the crane 1 further comprises a lifting member 8.
- the lifting member 8 is configured to lift a load 10.
- the lifting member 8 here comprises a carriage, a hook, a muffle, a cable and an actuator configured to drive the cable and the carriage.
- the lifting member 8 is movable along the boom 2 successively in several litters L.
- the lifting member 8 is at the minimum range when it is closest to the turn 3.
- the lifting member 8 is at maximum reach when it is furthest from tower 3.
- FIG. 2 illustrates a definition method 100 for defining a load curve for a crane 1.
- the definition method 100 comprises a simulation step 102, in which the crane 1 comprising the lifting member 8 and the arrow 2 is simulated.
- the simulation step 102 can implement a computer-assisted design software to design 2.
- the structure 4 is decomposed into a plurality of elements 5.
- This simulation step 102 can also be operated by means of a computer, not shown, which is equipped with a program designed to perform analytical calculations.
- the definition method 100 further comprises a step 104 for selecting elements to be tested 6, in which several elements to be tested 6 are selected from the elements 5. In the example of FIG. 2, most of the elements 5 are selected. of the structure 4 as elements to be tested 6. Here 90% of the bars forming the lattice of the arrow 2 can be selected.
- This step 104 of the selection of elements to be tested 6 can be performed using the computer.
- the definition method 100 comprises a step 108 of constraint selection, in which, for each element to be tested 6, predetermined maximum stresses are selected so as to define in a set of predetermined maximum stresses.
- predetermined maximum stresses may be selected at 90% of the allowable stresses imposed by Machine Directive CE-89/392, Standard FEM.1 .001 and Standard EN14439.
- This constraint selection step 108 can be performed by means of the computer, so that the set of predetermined maximum constraints can be recorded in this computer.
- the predetermined maximum stresses can be selected so as to achieve, for each element 5, a utilization rate of about 90%.
- the definition method 100 further comprises a step 1 10 for selecting ranges L, in which several ranges L are selected along the arrow 2.
- this selection step 1 10 of several litters L the litters L are selected in a regular distribution along the arrow 2.
- the selected spans L are spaced two by two by an interval 9 approximately equal to 1, 5% of the length of the arrow 2, here about 1 m.
- This stage 1 10 range selection can be operated by means of the computer.
- the analysis steps 1 12 described below are carried out.
- the analysis steps 1 12 can be performed using the computer.
- the analysis steps 1 12 are performed for a first range L, for example for the largest selected range (for example the maximum range) along the arrow 2.
- the analysis steps 1 12 comprise:
- analysis steps 1 12 include:
- the analysis steps 1 12 include an iteration step 1 12.5, in which is repeated:
- the number of iteration steps 1 12.5 depends on the theoretical load chosen during the selection step 1 12.1 and the increment of the theoretical load. A small increment will require more iteration steps 12.5 than a large increment, but a small increment will result in a theoretical load defined more accurately than a large increment.
- the definition method 100 comprises a recording step 1 12.6, in which a group of values is recorded in a memory of the computer comprising i) the range L and ii) the theoretical maximum load for which the calculated stresses are substantially equal to the respective predetermined maximum stresses.
- a maximum theoretical load is associated with each scope L in the memory.
- a definition step 1 14 consists in defining the load curve 50 indicating:
- the L ranges (in meters).
- the payload 10 + 8 is here the sum of the theoretical load found and the mass of the lifting member 8 (carriage, hook, muffle, cable and actuator).
- FIG. 5 illustrates a load curve 49 which has been obtained by a method of the state of the art while keeping the constant maximum load moment.
- the charge curve 50 obtained by the definition method 100 according to the invention is optimized with respect to the charge curve 49 of the state of the art. Indeed, the load curve 50 makes it possible to lift heavier payloads at all L spans.
- FIG. 3 illustrates a control method 200 for controlling the load suspended on the crane 1.
- the control method 200 comprises a supply step 202, in which the crane 1 is provided comprising:
- an evaluation device 20 which is configured to evaluate the mass of the load 10 suspended on the lifting member 8; the evaluation device 20 here comprises an electronic coder, and
- a measuring device 22 which is configured to measure the length of the instantaneous range L.
- the control method 200 further comprises a supply step 204, in which a control device 24, visible in FIG. 7, is provided, comprising a memory 26 which contains the charge curve 50 defined according to the definition method 100. As shown in FIG. 7, the control device 24 further comprises a calculation unit 28 which is configured to carry out the control method 200. In the example of the figures, the control device 24 is integrated in a control system 25 installed on the crane 1.
- the control system 25 further comprises a stop control 29 and position sensors 27 which are configured to generate signals representative respectively of the position of the carriage, the angular position of the boom 2 relative to the tower 3, the position of the hook, the position of the muffle and the position of the load 1 0.
- the control method 200 further comprises the following steps:
- control device 24 communicating to the control device 24 control signals for controlling at least one movement of the lifting member 8 among: i) a lifting movement to lift a target load and ii) a dispensing movement to move the lifting member 8 towards a target range,
- the restriction step 214 comprises: i) a prevention step 214.1 in which said at least one movement of the lifting member 8 is prevented, and ii) a warning step 214.2 in which the control 24 communicates an overrun warning warning that the target load is excessive for the target range.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2018100426A RU2018100426A (ru) | 2015-06-18 | 2016-06-16 | Способ определения оптимизированной кривой грузоподъемности крана, способ и контрольное устройство для контроля груза, подвешенного к крану, на основе оптимизированной кривой грузоподъемности |
JP2018517496A JP2018517647A (ja) | 2015-06-18 | 2016-06-16 | クレーンについての最適化された荷重曲線を規定する方法、最適化された荷重曲線に基づいてクレーンから吊られた荷重を制御するための方法及び制御装置 |
KR1020177034836A KR102566843B1 (ko) | 2015-06-18 | 2016-06-16 | 크레인에 대한 최적화된 부하 곡선을 규정하기 위한 방법, 크레인에 매달려 있는 부하를 최적화된 부하 곡선에 근거하여 제어하기 위한 방법 및 제어 장치 |
CN201680033865.5A CN107750230B (zh) | 2015-06-18 | 2016-06-16 | 定义起重机的负载曲线的定义方法、监控方法和监控装置 |
AU2016277966A AU2016277966A1 (en) | 2015-06-18 | 2016-06-16 | Method for defining an optimized load curve for a crane, method and control device for controlling the load suspended from a crane on the basis of the optimized load curve |
EP16739226.5A EP3310702B1 (fr) | 2015-06-18 | 2016-06-16 | Procédé de définition d'une courbe de charges optimisée pour grue, procédé et dispositif de contrôle pour contrôler la charge suspendue à une grue à partir de la courbe de charges optimisée |
ES16739226T ES2744433T3 (es) | 2015-06-18 | 2016-06-16 | Procedimiento para definir una curva de carga optimizada para una grúa, método y dispositivo de control para controlar la carga suspendida en una grúa desde la curva de carga optimizada |
US15/572,970 US11148914B2 (en) | 2015-06-18 | 2016-06-16 | Method for defining an optimized load curve for a crane, method and control device for controlling the load suspended from a crane on the basis of the optimized load curve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1555585 | 2015-06-18 | ||
FR1555585A FR3037681B1 (fr) | 2015-06-18 | 2015-06-18 | Procede de definition d’une courbe de charges optimisee pour grue, procede et dispositif de controle pour controler la charge suspendue a une grue a partir de la courbe de charges optimisee |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016203165A1 true WO2016203165A1 (fr) | 2016-12-22 |
Family
ID=54545212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/051469 WO2016203165A1 (fr) | 2015-06-18 | 2016-06-16 | Procédé de définition d'une courbe de charges optimisée pour grue, procédé et dispositif de contrôle pour contrôler la charge suspendue à une grue à partir de la courbe de charges optimisée |
Country Status (10)
Country | Link |
---|---|
US (1) | US11148914B2 (fr) |
EP (1) | EP3310702B1 (fr) |
JP (1) | JP2018517647A (fr) |
KR (1) | KR102566843B1 (fr) |
CN (1) | CN107750230B (fr) |
AU (1) | AU2016277966A1 (fr) |
ES (1) | ES2744433T3 (fr) |
FR (1) | FR3037681B1 (fr) |
RU (1) | RU2018100426A (fr) |
WO (1) | WO2016203165A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11999598B2 (en) | 2021-07-06 | 2024-06-04 | Manitowoc Crane Group France | Crane drive method for selecting and applying a preferential load curve according to the inclination of a jib structural element |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3408211B1 (fr) * | 2016-04-08 | 2022-06-08 | Liebherr-Components Biberach GmbH | Grue |
EP3802395A4 (fr) * | 2018-05-30 | 2022-03-16 | Syracuse Ltd. | Système et procédé de transport d'une charge hissée balançante |
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US3638211A (en) * | 1969-10-08 | 1972-01-25 | Litton Systems Inc | Crane safety system |
EP1775252A1 (fr) * | 2005-08-02 | 2007-04-18 | Potain | Procédé et dispositif de contrôle de la charge d'une grue à tour à flèche relevable |
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US5160055A (en) * | 1991-10-02 | 1992-11-03 | Jlg Industries, Inc. | Load moment indicator system |
DE19653579B4 (de) * | 1996-12-20 | 2017-03-09 | Liebherr-Werk Biberach Gmbh | Turmdrehkran |
WO2000052627A1 (fr) * | 1999-03-01 | 2000-09-08 | North Carolina State University | Systeme et procede de surveillance de grue et de recuperation de donnees |
US6631300B1 (en) * | 1999-11-05 | 2003-10-07 | Virginia Tech Intellectual Properties, Inc. | Nonlinear active control of dynamical systems |
US6527130B2 (en) * | 2001-02-16 | 2003-03-04 | General Electric Co. | Method and system for load measurement in a crane hoist |
DE10155006B4 (de) * | 2001-11-06 | 2004-12-16 | Terex-Demag Gmbh & Co. Kg | Fahrzeugkran mit Superlifteinrichtung |
US7546928B2 (en) * | 2006-10-27 | 2009-06-16 | Manitowoc Crane Companies, Inc. | Mobile lift crane with variable position counterweight |
DE102008024215B4 (de) * | 2008-05-19 | 2015-08-20 | Manitowoc Crane Group France Sas | Bestimmung und Rekonstruktion von Laständerungen an Hebezeugen |
CN101786577B (zh) | 2009-01-23 | 2013-05-15 | 柳州欧维姆机械股份有限公司 | 双机负重行走式液压数控跨缆吊机及控制系统及控制方法 |
DE102010025022A1 (de) | 2010-06-24 | 2011-12-29 | Hirschmann Automation And Control Gmbh | Verfahren zur Lastmomentbegrenzung eines Arbeitsfahrzeuges mit einem Ausleger |
DE202010014310U1 (de) * | 2010-10-14 | 2012-01-18 | Liebherr-Werk Ehingen Gmbh | Kran, insbesondere Raupen- oder Mobilkran |
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2015
- 2015-06-18 FR FR1555585A patent/FR3037681B1/fr not_active Expired - Fee Related
-
2016
- 2016-06-16 JP JP2018517496A patent/JP2018517647A/ja active Pending
- 2016-06-16 AU AU2016277966A patent/AU2016277966A1/en not_active Abandoned
- 2016-06-16 CN CN201680033865.5A patent/CN107750230B/zh active Active
- 2016-06-16 US US15/572,970 patent/US11148914B2/en active Active
- 2016-06-16 KR KR1020177034836A patent/KR102566843B1/ko active IP Right Grant
- 2016-06-16 WO PCT/FR2016/051469 patent/WO2016203165A1/fr active Application Filing
- 2016-06-16 EP EP16739226.5A patent/EP3310702B1/fr active Active
- 2016-06-16 ES ES16739226T patent/ES2744433T3/es active Active
- 2016-06-16 RU RU2018100426A patent/RU2018100426A/ru not_active Application Discontinuation
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11999598B2 (en) | 2021-07-06 | 2024-06-04 | Manitowoc Crane Group France | Crane drive method for selecting and applying a preferential load curve according to the inclination of a jib structural element |
Also Published As
Publication number | Publication date |
---|---|
ES2744433T3 (es) | 2020-02-25 |
RU2018100426A (ru) | 2019-07-18 |
FR3037681A1 (fr) | 2016-12-23 |
JP2018517647A (ja) | 2018-07-05 |
CN107750230B (zh) | 2019-07-16 |
AU2016277966A1 (en) | 2017-12-07 |
US20180155159A1 (en) | 2018-06-07 |
US11148914B2 (en) | 2021-10-19 |
KR20180019537A (ko) | 2018-02-26 |
EP3310702A1 (fr) | 2018-04-25 |
CN107750230A (zh) | 2018-03-02 |
FR3037681B1 (fr) | 2017-11-24 |
EP3310702B1 (fr) | 2019-06-12 |
KR102566843B1 (ko) | 2023-08-11 |
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