EP1923347A1 - Hebebühne und Verfahren zur Steuerung einer solchen Hebebühne - Google Patents

Hebebühne und Verfahren zur Steuerung einer solchen Hebebühne Download PDF

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Publication number
EP1923347A1
EP1923347A1 EP07356156A EP07356156A EP1923347A1 EP 1923347 A1 EP1923347 A1 EP 1923347A1 EP 07356156 A EP07356156 A EP 07356156A EP 07356156 A EP07356156 A EP 07356156A EP 1923347 A1 EP1923347 A1 EP 1923347A1
Authority
EP
European Patent Office
Prior art keywords
mast
signal
length
parts
nacelle
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Withdrawn
Application number
EP07356156A
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English (en)
French (fr)
Inventor
Slaheddine Beji
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.)
Haulotte Group SA
Original Assignee
Haulotte Group SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haulotte Group SA filed Critical Haulotte Group SA
Publication of EP1923347A1 publication Critical patent/EP1923347A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms

Definitions

  • the invention relates to an aerial lift and to a method of controlling such a nacelle.
  • a lifting platform It is known to equip a lifting platform with a mast of variable length, usually telescopic, at the end of which is mounted a platform on which can be held an operator or thanks to which one can lift objects to be arranged at height .
  • FR-A-2,808,791 and FR-A-2,836,465 disclose such nacelles.
  • nacelles it is important to know at every moment the length of the telescopic mast, to ensure that the position of the platform is included in an envelope or abacus corresponding to a safe operating area of the nacelle. Indeed, if the mast is too large, the weight of the platform can generate a cantilever may tilt the platform.
  • a drum is provided for unwinding or winding the cable according to the elongation or shortening of the mast.
  • the winding of the cable is detected by a potentiometer associated with the drum and which delivers an electrical signal representative of the length of the mast.
  • the invention intends to remedy more particularly, by proposing a new aerial platform whose operation is more reliable compared to the nacelles of the state of the art, while its cost price and its costs. exploitation are not increased significantly.
  • step c) it is determined in step c) whether a value corresponding to the length represented by the first signal is within a range of length corresponding to the relative position range represented by by the second signal and, if this is the case, it is considered that first and second signals are coherent while, if this is not the case, it is considered that the first and second signals are not coherent.
  • the nacelle 1 shown in Figures 1 and 2 comprises a frame 2 which rests on the surface S of the ground by four wheels, two of which are visible with the references 3A and 3B in Figure 1.
  • the frame 2 could be equipped with tracks forming ground connecting members.
  • the wheel 3A is driving, that is to say connected to a motor 4 integrated in the frame 2.
  • the wheel 3B is direct, that is to say has a variable orientation relative to the frame 2, this to direct the nacelle 1.
  • the frame 2 On the frame 2 is mounted, with the possibility of pivoting about an axis ZZ 'which is vertical when the surface S is horizontal, a base 5 on which is articulated a telescopic mast 6.
  • the mast 6 is articulated on the base 5 around an axis XX 'perpendicular to the axis Z-Z'.
  • the double arrow F 1 in FIG. 1 represents the pivoting movement of the mast 6 around the axis X-X ', this movement being controlled thanks to a jack 51 placed between the components 5 and 6.
  • the double arrow F 2 represents the pivoting movement of the base 5 relative to the chassis 2.
  • the double arrow F 3 represents the forward or backward movement of the platform 1 relative to the surface S, while the double arrow F 4 represents the changes possible steering of the nacelle 1.
  • the mast 6 is telescopic in that it comprises a shaft 61 articulated on the base 5 and a portion 62 adapted to slide inside the shaft 61 being controlled by a hydraulic cylinder 63 whose body 631 is integral with the 61 with a bracket 632.
  • the rod 633 of the cylinder 63 is equipped with a bracket 634 attachment to the portion 62.
  • the portion 62 moves parallel to a longitudinal axis AA 'of the mast 6 relative to the shaft 61, which represents the double arrow F 5 .
  • FIG. 1 Two positions of the portion 62 with respect to the shaft 61 are shown in FIG. 1 and illustrate this possibility of extending the mast 6.
  • the upper end of the portion 62 that is to say the end farthest from the barrel 61, is provided with a stirrup 621 for hooking a parallelogram structure 64 on which is suspended a platform 7 where can be held an operator O or on which we can have loads to transport height.
  • a device 8 which comprises a cable 81 hooked on the part 62 in the vicinity of the stirrup 621, that is to say in the vicinity of the end 6A, this cable circulating at the inside the mast 6 into the base 5 where it is wound on a drum 82 rotating about an axis X 82 parallel to the axis X-X '.
  • a potentiometer 83 is associated with the drum 82 and makes it possible to know the number of revolutions made by this drum from a reference position corresponding to a configuration of the mast 6 where its length L 6 is known. In each configuration of the mast 6, the number of windings of the cable 81 on the drum 82 is known by the potentiometer 83.
  • the output signal S 1 of the potentiometer 83 makes it possible to determine the length L 6 .
  • the signal S 1 is supplied to a first input of a comparator 9 integrated in the base 5.
  • the body 631 of the jack 63 is equipped with proximity sensors 635 1 to 635 22 distributed along the length of this body, parallel to the axis A-A '.
  • the piston 636 of the cylinder 63 which is disposed at the end of the rod 633, is equipped with a magnet 637, each sensor 635 i (i being between 1 and 22) can detect the proximity.
  • each sensor 635 i i being between 1 and 22
  • the passage of the magnet 637 successively in front of the sensors 635 i makes it possible to detect between which pair of sensors 635 i and 635 i + 1 is arranged the piston 636.
  • I 6 the distance between the bottom 638 of the body 631 and the center of the piston 636.
  • the distance I 6 is connected by an unambiguous relation to the distance L 6, this relationship being defined by the dimensions of the constituent parts of the mast 6, the assembly mode of the mast 6 and the operating games.
  • I i the distance between each sensor 635 i and the bottom 638.
  • the distance l 6 is between the values I i and I i + 1 .
  • the sensors 635 i are connected to a box 639 for collecting data from the sensors 635 i , which box generates, from these data, a signal S 2 representative of the pair of sensors 635 i -635 i + 1 between which find the magnet 637.
  • the values I i of all the sensors 635 i are stored in an integrated memory or associated with the comparator 9.
  • the signals S 1 and S 2 are supplied to the comparator 9 in which it is verified at each instant that the value L 6 , measured by the device 8, corresponds to a value I 6 which lies in the range delimited by the sensors 635 i and 635 i + 1 between which the magnet 637 is located.
  • a memory 91 is provided in the comparator 9 to associate each value L 6 with the value corresponding to I 6 .
  • a signal S 3 of normal operation of the nacelle 1 is sent to an electronic control unit 10 of this nacelle. If this is not the case, an alarm signal S 4 is emitted and an alarm means 11 is activated, for example a siren or flashing flash.
  • the value L 6 measured by the device 8 is such that the corresponding value I 6 does not belong to the range of relative position determined by the sensors 635 i , so that a potential danger situation can be anticipated.
  • the number of sensors 635 i is chosen according to the desired accuracy for the relative position ranges. It can be much less than 22, for example of the order of 5, or on the contrary greater than 22.
  • the nacelle 1 of this embodiment is equipped with a chassis 2 resting on the surface of the ground S by means of four wheels, two of which are visible with the references 3A and 3B.
  • the frame 2 carries a motor assembly 4 which is associated with a mast 6 comprising a drum 61, as well as two parts 62A and 62B telescopic relative to each other and relative to the barrel 61.
  • the possibility of extension of the mast 6 is represented by the double arrows F 5 .
  • the mast 6 could have more than two parts 62A and 62B or, on the contrary, only one such part.
  • a stirrup 621 on which is articulated a parallelogram structure 64 supporting a platform 7.
  • an auxiliary mast can be mounted on the stirrup 621, in accordance with the technical teaching of FR-A-2,808,791 .
  • a device 8 for measuring the length L 6 of the mast 6 is provided in the form of a cable 81 stretched between the upper end 6A of the mast, at the level of the portion 62B and in the vicinity of the stirrup 621, and the 4.
  • the cable 81 wraps around a drum 82 whose angular position is identified by a potentiometer 83.
  • S 1 the output signal of the potentiometer 83.
  • the portion 62A is provided along its length, that is to say parallel to the longitudinal axis AA 'of the pole 6, a series of labels or pellets 641 1 , 645 2 , ... 645 j each carrying a magnet.
  • 645 j a pellet where ja a value between 1 and the number of pellets.
  • a Hall effect sensor 647 is disposed in the vicinity of the upper end of the drum 61. This sensor generates a signal S 2 each time it detects a pellet, which makes it possible to know the number of pills 645 j located respectively at above and below it in the configuration of FIG. 4.
  • the signal S 2 delivered by the sensor 647 makes it possible to know in which relative position range the parts 61 and 62A are located relative to each other. 'other.
  • an ILS-type sensor (reed switch or reed switch) can be used for the sensor 647.
  • the output signal of the sensor 647 makes it possible to know in which range of values should lie a value I 6 corresponding to the measured value L 6 , which makes it possible to carry out a consistency check, as in the first embodiment.
  • a plurality of relative position determining devices including magnetized pellets and Hall effect sensors may be provided, respectively in the interface areas between a element of the mast 6 and the adjacent element.
  • the relative position determination means or means make it possible to know a relative position range in which the parts 61, 62A and 62B must be located, this range making it possible to check the coherence of the information received from the device 8, in the form of the signal S 1 , and the sensor 647, in the form of the signal S 2 .
  • the different embodiments can be combined with each other; in particular, the sensors mentioned in the first embodiment can be used with a vertical mast, while the sensors mentioned in the second embodiment can be used with a mast articulated with respect to a motorization assembly.
  • the invention has been shown when used with a device for measuring the length L 6 of the mast comprising a cable, a drum and a potentiometer. However, it is applicable with other types of measuring devices.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP07356156A 2006-11-07 2007-11-06 Hebebühne und Verfahren zur Steuerung einer solchen Hebebühne Withdrawn EP1923347A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609715A FR2908119B1 (fr) 2006-11-07 2006-11-07 Nacelle elevatrice et procede de commande d'une telle nacelle

Publications (1)

Publication Number Publication Date
EP1923347A1 true EP1923347A1 (de) 2008-05-21

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Family Applications (1)

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EP07356156A Withdrawn EP1923347A1 (de) 2006-11-07 2007-11-06 Hebebühne und Verfahren zur Steuerung einer solchen Hebebühne

Country Status (2)

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EP (1) EP1923347A1 (de)
FR (1) FR2908119B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2472440A (en) * 2009-08-07 2011-02-09 Niftylift Limtied Operator Cage with Pivoting Control Console and Load Sensor
EP2301884A1 (de) * 2009-09-28 2011-03-30 Haulotte Group Hubarbeitsbühne und Verfahren für die Steuerung dessen
EP2522620A1 (de) * 2011-05-10 2012-11-14 Manitou Bf Meßeinrichtung für einen Teleskoparm
ES2737844R1 (es) * 2017-03-24 2020-11-18 Xuzhou Handler Special Vehicle Vehiculo aislado montado con plataforma de trabajo aereo y metodo de limitacion automatica de radio para la plataforma de trabajo aislada

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285710A1 (de) * 1987-03-06 1988-10-12 3B6 sistemi elettro-idraulici s.n.c. Vorrichtung zur Begrenzung der Reichweite des Armes und/oder des Moments für Hebebühnen
FR2807974A1 (fr) * 2000-04-20 2001-10-26 Pinguely Haulotte Chassis pour nacelle elevatrice et nacelle elevatrice a ciseaux equipee d'un tel chassis
FR2808791A1 (fr) 2000-05-11 2001-11-16 Pinguely Haulotte Structure telescopique et nacelle elevatrice equipee d'une telle structure
WO2002018264A1 (de) * 2000-08-30 2002-03-07 Pat Gmbh Redundantes sicherheitssystem eines fahrzeuges
FR2836465A1 (fr) 2002-02-28 2003-08-29 Pinguely Haulotte Nacelle elevatrice, et procede d'assemblage au moyen d'une telle nacelle
WO2005092778A1 (en) * 2004-02-26 2005-10-06 Jlg Industries, Inc. Lift vehicle with multiple capacity envelope control system and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285710A1 (de) * 1987-03-06 1988-10-12 3B6 sistemi elettro-idraulici s.n.c. Vorrichtung zur Begrenzung der Reichweite des Armes und/oder des Moments für Hebebühnen
FR2807974A1 (fr) * 2000-04-20 2001-10-26 Pinguely Haulotte Chassis pour nacelle elevatrice et nacelle elevatrice a ciseaux equipee d'un tel chassis
FR2808791A1 (fr) 2000-05-11 2001-11-16 Pinguely Haulotte Structure telescopique et nacelle elevatrice equipee d'une telle structure
WO2002018264A1 (de) * 2000-08-30 2002-03-07 Pat Gmbh Redundantes sicherheitssystem eines fahrzeuges
FR2836465A1 (fr) 2002-02-28 2003-08-29 Pinguely Haulotte Nacelle elevatrice, et procede d'assemblage au moyen d'une telle nacelle
WO2005092778A1 (en) * 2004-02-26 2005-10-06 Jlg Industries, Inc. Lift vehicle with multiple capacity envelope control system and method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2472440A (en) * 2009-08-07 2011-02-09 Niftylift Limtied Operator Cage with Pivoting Control Console and Load Sensor
GB2472440B (en) * 2009-08-07 2012-10-17 Niftylift Ltd Operator cage, preferably for enhanced operator safety
US8813910B2 (en) 2009-08-07 2014-08-26 Niftylift Limited Operator cage with enhanced operator safety
EP2301884A1 (de) * 2009-09-28 2011-03-30 Haulotte Group Hubarbeitsbühne und Verfahren für die Steuerung dessen
FR2950618A1 (fr) * 2009-09-28 2011-04-01 Haulotte Group Nacelle elevatrice et methode de commande d'une telle nacelle
US9079756B2 (en) 2009-09-28 2015-07-14 Haulotte Group Elevating platform and a method of controlling such a platform
EP2522620A1 (de) * 2011-05-10 2012-11-14 Manitou Bf Meßeinrichtung für einen Teleskoparm
FR2975089A1 (fr) * 2011-05-10 2012-11-16 Manitou Bf Dispositif de mesure de bras telescopique de manutention
US8875410B2 (en) 2011-05-10 2014-11-04 Manitou Bf Measuring device for a telescopic handling arm
ES2737844R1 (es) * 2017-03-24 2020-11-18 Xuzhou Handler Special Vehicle Vehiculo aislado montado con plataforma de trabajo aereo y metodo de limitacion automatica de radio para la plataforma de trabajo aislada

Also Published As

Publication number Publication date
FR2908119B1 (fr) 2009-02-06
FR2908119A1 (fr) 2008-05-09

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