WO2007138418A1 - Organe de levage a moyens de mesure de charge et/ou de contraintes - Google Patents
Organe de levage a moyens de mesure de charge et/ou de contraintes Download PDFInfo
- Publication number
- WO2007138418A1 WO2007138418A1 PCT/IB2007/001349 IB2007001349W WO2007138418A1 WO 2007138418 A1 WO2007138418 A1 WO 2007138418A1 IB 2007001349 W IB2007001349 W IB 2007001349W WO 2007138418 A1 WO2007138418 A1 WO 2007138418A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lifting
- lifting member
- load
- optical
- longitudinal channel
- 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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
- B66C1/663—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for containers
-
- 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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/40—Crane hooks formed or fitted with load measuring or indicating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
Definitions
- the present invention relates to lifting members, intended to transmit all or part of a lifting force between a lifting device and a load to be lifted.
- lifting devices are commonly used in fields such as civil engineering or port handling.
- EP 1 236 980 discloses a stress sensor for lifting members, comprising:
- Such a stress sensor makes it possible to monitor the loading of the lifting member and to monitor the stress induced by the load lifted in the lifting member by measuring the pressure in the compression chamber.
- a first problem proposed by the invention is to accurately measure a load and / or induced stresses in a lifting member when lifting a load.
- the invention seeks to achieve this measurement closer to the lifting member, to minimize the risk of errors that may result from approximations by calculation.
- the invention aims to design a measuring device having a high durability, capable of withstanding shocks, insensitive to electromagnetic fields, and requiring no voluntary recalibration operation to compensate for temperature variations.
- the invention also seeks to design a device for measuring the weight of a load lifted by a lifting member and / or constraints induced by the lifting of a load, which has a high reactivity and a high speed, allowing a real time measurement.
- the invention aims to provide a compact measuring device, easily adaptable to most existing lifting devices and commonly used in the field of lifting, the adaptation can be achieved without detectable changes in the properties of organs lifting.
- a lifting member intended to transmit all or part of the lifting force between a lifting device and a load to be lifted, comprising:
- a proximal portion shaped to be fixed to the lifting apparatus, a distal portion adapted to be connected to the load,
- - A longitudinal section developing from the proximal portion towards the distal portion, and able to elastically elongate under the action of the portion of the lifting force, wherein: - the longitudinal section of the organ lifting device comprises at least one longitudinal channel,
- an optical stress sensor is inserted into said at least one longitudinal channel and is fastened to the side wall of said at least one longitudinal channel
- connecting means are provided for transmitting the signals of the optical stress sensor to means for receiving and analyzing the signals of the optical stress sensor.
- optical stress sensor allows a high reactivity as well as a high accuracy in the measurement of the load and / or the stresses induced by the lifting of the load in the lifting member.
- the optical stress sensor is fixed to the side wall of the longitudinal channel in at least a first and a second attachment zone located at a distance from each other in the longitudinal direction of the longitudinal channel.
- the longitudinal section of the lifting member When lifting a load, the longitudinal section of the lifting member will elongate elastically under the action of the lifting force. This lengthening of the longitudinal section will vary the distance between the two attachment zones, which will cause a variation of the signals of the optical stress sensor, which variation will directly deduce the state of stress induced by the load on the lifting member and / or the weight of the load lifted by the lifting member.
- the first and second attachment zones may be arranged in a zone of constant diameter of the longitudinal section of the lifting member.
- the longitudinal channel may be disposed in the middle of the cross section of the longitudinal section of the lifting member.
- the optical stress sensor is thus inserted into the neutral fiber of the longitudinal section of the lifting member.
- the stress measured by the optical stress sensor will thus be a pure axial stress.
- the measurement will not be parasitized by any bending of the lifting member that would distort the calculation of the weight of the load raised.
- optical strain sensors can be used, provided that they can be housed at least partly in the longitudinal channel of the lifting member.
- the optical stress sensor may be an optical fiber optical sensor, said optical fiber being made integral with the side wall of the longitudinal channel according to the first and second attachment zones.
- Such a structure is compact and robust, and it can be connected by the same optical fiber to reception and analysis means placed at a distance.
- the optical fiber may advantageously be glued in a metal tube itself glued in the longitudinal channel.
- the optical constraint sensor may comprise a laser distance sensor, capable of producing an image signal of the extension of the longitudinal section of the lifting member.
- the distal portion of the lifting member may be shaped hook.
- the distal portion of the lifting member may be shaped as "T".
- FIG. 1 is a perspective view of a first embodiment of the lifting member according to the invention
- FIG. 2 is a schematic side view of a second embodiment of a lifting member according to the invention
- - Figure 3 is a perspective view of a frame for gripping and lifting a load having a plurality of lifting members;
- a longitudinal section 1c developing from the proximal portion 1a towards the distal portion 1b, and able to elongate elastically under the action of a lifting force of the load.
- the longitudinal channel 1d is blind and extends from the proximal portion
- the longitudinal channel 1d may be through to facilitate, for example, the introduction and / or extraction of the optical stress sensor 2.
- an optical fiber optic stress sensor 2 As optical strain sensor 2, it is advantageous to use, according to a first embodiment of the invention, an optical fiber optic stress sensor 2.
- the optical fiber is made integral with the side wall of the longitudinal channel 1 d according to the first 5a and the second 5b attachment zones, an intermediate section of optical fiber being situated between the two fixing zones 5a and 5b.
- the same elongation of the optical fiber intermediate section occurs, and this elongation produces a corresponding variation in the optical properties of the optical fiber.
- the optical fiber By sending in the optical fiber a suitable light wave, it is possible to detect, by the analysis of the reflected wave, this variation in length of the longitudinal section 1c of the lifting member 1, and to deduce therefrom the load borne by the lifting member.
- the optical fiber may extend beyond the lifting member 1, to a housing containing both the light source and means for receiving and analyzing the signals of the optical stress sensor.
- the optical fiber may have a diameter of about 0.2 mm, and may be protected by a layer of wax wrapped in a layer of rubber, itself wrapped in a metal braid also wrapped in a layer rubber, the assembly having a diameter of about 5 mm.
- Such a fiber can be flexed to possible radii of about 10 cm, which allows to associate it in parallel with other connection means such as electrical cables and flexible hydraulic supply tubes.
- the housing can be deported 5 to 10 m away from the lifting member, without loss of efficiency of the load measuring means.
- the optical fiber may be glued into a metal tube itself adhered in the longitudinal channel 1d.
- an optical fiber optical stress sensor 2 it is possible to use, for example, a Bragg grating optical fiber elongation optical sensor. It is a sensor in which a single mode optical fiber comprises a section whose refractive index has been modulated periodically at a determined pitch along the optical fiber by intense ultraviolet radiation. The fiber section with periodically modulated refractive index is called the Bragg grating. This Bragg grating produces a reflection of the light waves traveling through the optical fiber, at a wavelength called the Bragg wavelength, which is substantially equal to twice the modulation step of the refractive index along the fiber. optical in the Bragg network.
- the wavelength of light reflected by the Bragg grating is substantially proportional to the distance between two refractive index variations in the optical fiber, and any variation in this distance, as a result of an elongation, for example , can be detected by measuring the wavelength of reflected light.
- Other types of optical fiber elongation sensors may however be used, for example a Fabry-Perot interferometer sensor.
- an optical fiber optic stress sensor 2 makes it possible to carry out a rapid measurement with high reliability. This measurement can also be made independent of temperature differences in a simple way using mathematical formulas, as indicated in WO 86/01303. Alternatively, one can consider using an optical fiber strain sensor additional optical stress free and not subject to a load, to use its signal to compensate for temperature changes.
- an optical stress sensor 2 it is possible to use a laser distance sensor capable of producing an image signal of the extension of the longitudinal section 1c of the lifting member 1.
- a laser diode emits, at the entrance of the longitudinal channel 1d, pulses of light which are reflected near the bottom of the channel 1d, and a sensor receives the reflected wave. We then measure the transit time of the light back and forth in the longitudinal channel 1d, to deduce its length and its possible elongation under the action of a load.
- the attachment zones 5a and 5b are arranged in a zone of constant diameter of the longitudinal section 1c of the lifting member 1.
- the optical stress sensor 2 extends in the same way as the area of the lifting member 1 between the first attachment zone 5a and the second attachment zone 5b. This zone having a constant diameter D, it extends linearly as a function of the load attached to the distal portion 1b of the lifting member 1.
- the longitudinal channel 1d is disposed in the middle of the cross section of the longitudinal section 1c of the lifting member 1.
- the optical stress sensor 2 is thus housed in the neutral fiber of the longitudinal section 1c of the lifting member 1. This makes it possible to measure a pure axial stress exerted on the lifting member 1. The measurement is not and not parasitized by the possible bending effects of the lifting member 1. Failing this, in the case of an off-center position of the optical stress sensor 2, bending effects could reduce or increase the stress calculated by the means of reception and analysis 4 from the signals given by the optical stress sensor 2.
- the distal end 1b of the lifting member 1 is shaped as "T".
- the distal portion 1b of the lifting member 1 is shaped hook.
- the lifting member 1 shown in Figure 2 is commonly used in many lifting devices such as in cranes in the field of civil engineering.
- the lifting member 1 and the receiving and analyzing means 4 constitute a device 9 for measuring and analyzing a load.
- This device 9 for measuring and analyzing the load makes it possible to determine one or more of the following parameters: the weight lifted by the lifting member 1,
- This device 9 for measuring and analyzing the load can also be connected to a safety device (not shown) provided on the hoisting apparatus, intended to cut off the power supply of the hoisting apparatus in the case where the device 9 for measuring and analyzing the load would detect a load greater than the maximum load that can be raised by the lifting member 1, or greater than the maximum load that can safely lift the hoist.
- a safety device not shown
- Such a device 9 for measuring and analyzing the load also makes it possible to monitor the state of fatigue and stress of the lifting member 1. It will thus be possible to easily identify any residual stresses in the lifting member 1, or non-elastic behaviors of the longitudinal section 1 c, indicating a beginning of plastic deformation of the lifting member 1 can lead to breaking.
- FIG. 3 shows a gripping and lifting frame 6 comprising four lifting members 1 according to the embodiment illustrated in FIG. 1.
- the lifting members 1 are arranged at the four corners of the frame 6, which frame 6 can be used indifferently with a handling crane 7 or a crane as illustrated in FIG. 4, or with a stacker with a fork carriage 8 as shown in FIG. Figure 5.
- the lifting members 1 are all provided with optic optical fiber optical sensors themselves connected by the connecting means 3 by optical fiber sheathed to the same reception and analysis means. 4 which analyze in sequence the signals of the optic optical fiber optical sensors (not shown) contained in the lifting members 1.
- the reception and analysis means 4 scan the light waves reflected by the optical fibers, and deduce the elongation of each lifting member 1 and therefore the value of the load that it supports.
- the reception and analysis means 4 can thus process the signals of the optic optical fiber optical sensors (not shown) contained in the lifting members 1 to determine one or more of the following parameters:
- gripping and lifting frame 6 shown in FIGS. 3 to 5 comprises only four lifting members 1, it is possible to envisage a larger number of lifting members 1, arranged differently for the simultaneous lifting of several containers.
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK07734655.9T DK2019808T3 (da) | 2006-05-24 | 2007-05-24 | Løfteelement med last- og/eller spændingsmålemidler |
JP2009511602A JP4972686B2 (ja) | 2006-05-24 | 2007-05-24 | 荷重及び/又は応力測定手段を備える持上げ部材 |
AT07734655T ATE520618T1 (de) | 2006-05-24 | 2007-05-24 | Hubglied mit last- und/oder spannungsmessmitteln |
CA2653832A CA2653832C (fr) | 2006-05-24 | 2007-05-24 | Organe de levage a moyens de mesure de charge et/ou de contraintes |
CN2007800190625A CN101454235B (zh) | 2006-05-24 | 2007-05-24 | 带有载荷和/或应力测量机构的提升构件、保持及提升框架和用于测量和分析载荷的装置 |
EP07734655A EP2019808B1 (fr) | 2006-05-24 | 2007-05-24 | Organe de levage a moyens de mesure de charge et/ou de contraintes |
AU2007266739A AU2007266739B2 (en) | 2006-05-24 | 2007-05-24 | Lifting member with load and/or stress measuring means |
US12/301,798 US8276461B2 (en) | 2006-05-24 | 2007-05-24 | Lifting member with load and/or stress measuring means |
KR1020087031248A KR101391272B1 (ko) | 2006-05-24 | 2008-12-23 | 하중 및/또는 응력 측정 수단을 구비한 리프팅 부재 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR06/51916 | 2006-05-24 | ||
FR0651916A FR2901548B1 (fr) | 2006-05-24 | 2006-05-24 | Organe de levage a moyens de mesure de charge et /ou de contraintes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007138418A1 true WO2007138418A1 (fr) | 2007-12-06 |
Family
ID=37667283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2007/001349 WO2007138418A1 (fr) | 2006-05-24 | 2007-05-24 | Organe de levage a moyens de mesure de charge et/ou de contraintes |
Country Status (15)
Country | Link |
---|---|
US (1) | US8276461B2 (fr) |
EP (1) | EP2019808B1 (fr) |
JP (1) | JP4972686B2 (fr) |
KR (1) | KR101391272B1 (fr) |
CN (1) | CN101454235B (fr) |
AT (1) | ATE520618T1 (fr) |
AU (1) | AU2007266739B2 (fr) |
CA (1) | CA2653832C (fr) |
DK (1) | DK2019808T3 (fr) |
ES (1) | ES2371681T3 (fr) |
FR (1) | FR2901548B1 (fr) |
MY (1) | MY146747A (fr) |
PT (1) | PT2019808E (fr) |
TW (1) | TWI388494B (fr) |
WO (1) | WO2007138418A1 (fr) |
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FR2965258A1 (fr) * | 2010-09-27 | 2012-03-30 | Lasstec | Organe d'accrochage a memoire |
WO2016193606A1 (fr) | 2015-05-29 | 2016-12-08 | Conductix Wampfler France | Dispositif de mesure d'une contrainte de traction dans un câble mécanique de levage et procédé de pesage d'une charge au moyen d'un tel dispositif |
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EP3379222B1 (fr) | 2017-03-22 | 2020-12-30 | Methode Electronics Malta Ltd. | Ensemble de capteur à base magnétoélastique |
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CN2479489Y (zh) * | 2001-04-12 | 2002-02-27 | 梅特勒-托利多常州衡器有限公司 | 无线数传电子钩头秤 |
AU2003288565A1 (en) | 2002-12-16 | 2004-07-09 | Aston Photonic Technologies Limited | Optical interrogation system and sensor system |
FR2854689B1 (fr) * | 2003-05-07 | 2005-09-02 | Commissariat Energie Atomique | Dispositif, systeme et procede de mesure de deformations mecaniques et/ou thermiques uniaxiales au moyen d'une fibre optique a reseau de bragg |
JP4318113B2 (ja) * | 2003-06-20 | 2009-08-19 | 株式会社日立製作所 | ボルトゲージ |
US7026557B2 (en) * | 2003-10-30 | 2006-04-11 | Mettler-Toledo | Apparatus and method for weighting objects on a fork lift truck |
CN2744661Y (zh) * | 2004-11-11 | 2005-12-07 | 郑州恒科实业有限公司 | 起重机钩头电子秤 |
-
2006
- 2006-05-24 FR FR0651916A patent/FR2901548B1/fr not_active Expired - Fee Related
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2007
- 2007-05-22 TW TW096118157A patent/TWI388494B/zh not_active IP Right Cessation
- 2007-05-24 MY MYPI20084729A patent/MY146747A/en unknown
- 2007-05-24 CA CA2653832A patent/CA2653832C/fr not_active Expired - Fee Related
- 2007-05-24 EP EP07734655A patent/EP2019808B1/fr not_active Not-in-force
- 2007-05-24 CN CN2007800190625A patent/CN101454235B/zh not_active Expired - Fee Related
- 2007-05-24 PT PT07734655T patent/PT2019808E/pt unknown
- 2007-05-24 AT AT07734655T patent/ATE520618T1/de active
- 2007-05-24 ES ES07734655T patent/ES2371681T3/es active Active
- 2007-05-24 WO PCT/IB2007/001349 patent/WO2007138418A1/fr active Application Filing
- 2007-05-24 US US12/301,798 patent/US8276461B2/en active Active
- 2007-05-24 JP JP2009511602A patent/JP4972686B2/ja not_active Expired - Fee Related
- 2007-05-24 AU AU2007266739A patent/AU2007266739B2/en not_active Ceased
- 2007-05-24 DK DK07734655.9T patent/DK2019808T3/da active
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- 2008-12-23 KR KR1020087031248A patent/KR101391272B1/ko active IP Right Grant
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FR2726646A1 (fr) * | 1994-11-09 | 1996-05-10 | Otis Elevator Co | Capteur de force a fibre optique, notamment pour la mesure de la charge des cabines d'ascenseur |
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EP1236980A1 (fr) * | 2001-03-02 | 2002-09-04 | Ppm Societe Anonyme: | Capteur de contraintes pour organe de levage et organe de levage en faisant application |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2960534A1 (fr) * | 2010-05-27 | 2011-12-02 | Lasstec | Organe d'accrochage a capteur distal |
WO2011151764A1 (fr) | 2010-05-27 | 2011-12-08 | Lasstec | Organe d'accrochage a capteur distal |
FR2965258A1 (fr) * | 2010-09-27 | 2012-03-30 | Lasstec | Organe d'accrochage a memoire |
WO2012042464A1 (fr) | 2010-09-27 | 2012-04-05 | Lasstec | Organe d'accrochage a memoire |
WO2016193606A1 (fr) | 2015-05-29 | 2016-12-08 | Conductix Wampfler France | Dispositif de mesure d'une contrainte de traction dans un câble mécanique de levage et procédé de pesage d'une charge au moyen d'un tel dispositif |
Also Published As
Publication number | Publication date |
---|---|
FR2901548A1 (fr) | 2007-11-30 |
AU2007266739B2 (en) | 2012-11-15 |
ATE520618T1 (de) | 2011-09-15 |
CN101454235A (zh) | 2009-06-10 |
EP2019808B1 (fr) | 2011-08-17 |
KR20090027661A (ko) | 2009-03-17 |
US8276461B2 (en) | 2012-10-02 |
US20100037700A1 (en) | 2010-02-18 |
DK2019808T3 (da) | 2011-12-05 |
FR2901548B1 (fr) | 2008-07-25 |
PT2019808E (pt) | 2011-11-25 |
KR101391272B1 (ko) | 2014-05-02 |
CN101454235B (zh) | 2013-05-15 |
CA2653832C (fr) | 2014-08-26 |
CA2653832A1 (fr) | 2007-12-06 |
AU2007266739A1 (en) | 2007-12-06 |
JP2009537843A (ja) | 2009-10-29 |
TW200815275A (en) | 2008-04-01 |
EP2019808A1 (fr) | 2009-02-04 |
ES2371681T3 (es) | 2012-01-09 |
MY146747A (en) | 2012-09-14 |
TWI388494B (zh) | 2013-03-11 |
JP4972686B2 (ja) | 2012-07-11 |
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