EP2062845B1 - Portalkran zum Verschieben für Lern- oder Industrieanwendungen - Google Patents

Portalkran zum Verschieben für Lern- oder Industrieanwendungen Download PDF

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Publication number
EP2062845B1
EP2062845B1 EP08358014.2A EP08358014A EP2062845B1 EP 2062845 B1 EP2062845 B1 EP 2062845B1 EP 08358014 A EP08358014 A EP 08358014A EP 2062845 B1 EP2062845 B1 EP 2062845B1
Authority
EP
European Patent Office
Prior art keywords
carriage
lifting
winch
translation
load
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.)
Not-in-force
Application number
EP08358014.2A
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English (en)
French (fr)
Other versions
EP2062845A2 (de
EP2062845A3 (de
Inventor
Claude Ledent
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.)
Ledent Machines Equipements (sarl)
Original Assignee
Ledent Machines Equipements (sarl)
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 Ledent Machines Equipements (sarl) filed Critical Ledent Machines Equipements (sarl)
Publication of EP2062845A2 publication Critical patent/EP2062845A2/de
Publication of EP2062845A3 publication Critical patent/EP2062845A3/de
Application granted granted Critical
Publication of EP2062845B1 publication Critical patent/EP2062845B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C5/00—Base supporting structures with legs
    • B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
    • 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
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

Definitions

  • the present invention relates to a lifting crane and translation, for educational or industrial use.
  • a lifting crane for industrial and educational use comprising a carriage moving on a beam for support and guidance, the latter being supported by two feet with which it is a gantry which is, for example, mounted on wheels to ensure its displacement, said gantry further comprising a gripping tool attached to a stabilizing manipulator arm integral with the carriage, said stabilizer manipulator arm being actuated by a winch or a jack equipping said carriage.
  • a lifting station for educational use comprising a bracket mounted on a base and at the top of which is installed, remote from said base, a winch on a support articulated on one side by an axis and resting on the other side on dampers, the distance between the tilting support and the base allow the suspension of a load to winch cable, without interposing the deflection member between the winding pulley of the latter on which rolls said cable and said load suspended therefrom, as well as the vertical movement of the latter between said pulley and said base.
  • the devices described in the aforementioned documents are advantageously applicable in the fields of technical education and vocational training concerning lifting and handling techniques. They can also be used for professional purposes, in any industry requiring the controlled and secure handling of loads.
  • the present invention aims in particular to broaden the scope of functions provided by the lifting cranes and handling of the kind described in the document FR-2 676 724 , in order to make such gantries, more comprehensive didactic test and demonstration products and performance, in the field of physics, energy, electronics, automation and communication. These new features are also applicable to lifting and handling equipment that can be used in a variety of industries.
  • the invention is applicable to a lifting and translation gantry of the type described in the document FR-2 676 724 , comprising a beam constituting a horizontal axis and supported at its ends by poles preferably having a gooseneck shape. On this horizontal beam, is mounted a carriage supporting a winch on the drum which wraps a cable whose lower end is provided with a means for the suspension of loads of various weights and of various natures.
  • the lifting and the translation of the loads suspended with the winch can cause a more or less pronounced dangling of these loads.
  • the lifting and translation gantry comprises a means for detecting and controlling the ballast of the load suspended on the winch during the displacement of said loads, these means being arranged to remove this ballant or to limit the amplitude.
  • the balloon detection system is constituted by an analog-type fork and signal sensor, installed below the winch drum, so that the position of said cable is in the field of Measuring the sensor allows the detection of variations of this position, when moving the load.
  • the fork sensor emits signals that are operated by a safety device to stop or slow the translation movement of the truck, either in correction by the automation or in communication for the traceability of operation.
  • the gear motor ensuring the translation movements of the carriage is provided with a drive pinion meshing with a rack mounted floating along the horizontal beam of the gantry and whose ends are placed in support against force sensors.
  • force sensors make it possible to measure the torque of the geared motor and the forces due to the balloon or the driving load, for operation by the safety system, or by the automation, or for the recording of physical measurements.
  • the lifting gantry and translation is provided with a vertical displacement arm for supporting gripping tools or assembly, the vertical movements of this arm being provided by the winch cable from which said arm is secured.
  • the lower end of this arm can be equipped with different types of interchangeable grippers, for educational work.
  • the winch is installed on a pivoting support is mounted on the carriage, this support being articulated via one of its sides, on said carriage, and resting, via its opposite side, on a load sensor also supported by the carriage.
  • the thresholds of overload or underload are controlled by the sensor.
  • the combination of the articulated winch with weighing sensor and the gripper arm is a particularly interesting device for stacking / unstacking.
  • the overload or underload thresholds being controlled by the sensor and the load transmitter, the difference recorded during docking indicates the lowering of the descent and the action of the gripping device. By this method, the storage height is immediately detected.
  • the system also highlights the differences in cycle repeatability.
  • the gantry lifting and translation is provided with a folding table to work, either lifting and translation with the weight, or in handling, by gripping, for stacking exercise / unstacking , in the applications of the didactic field, so that the pupils thus have a work plan at height.
  • This lifting and translation gantry comprises a robust horizontal beam P supported, at its ends, by two posts or uprights M which can be straight or, preferably, in the shape of a gooseneck and which are braced, at their lower part, by a transom TR. It can be equipped, in lower part, a protection ramp R surrounding the moving area of the loads handled.
  • the carriage C can be equipped, to ensure its translational movement, of several types of interchangeable actuators. It makes it possible to test gearboxes 26, being of the type: wheel and screw, sun gear / parallel shaft, conical torque; these can be equipped with different types of motors 28 interchangeable or not, 30 encoders, their electrical connection is direct or multi-pin connectors.
  • the carriage C is equipped with a detection device 28 or contact for slowing stroke, end of travel, and overtravel of safety for both directions, and on a direction of a zero point of initialization.
  • the beam P is equipped in each direction, adjustable cams for slowdown detectors, fixed cams with deceleration ramps for the purposes of races, fixed cams for safety contacts, and stops 29.
  • the device ensuring the translation of the carriage C comprises a drive gear 3 meshing with a rack 3A fixed along the beam P.
  • This drive pinion 3 is coupled to an encoder 30 allowing provide speed or distance information.
  • the device is completed by a visual information 31, given by the apposition of a tape measure glued or otherwise fixed along the beam P.
  • the rack 3A is mounted floating on the beam P, that is to say that it can slide longitudinally along the latter.
  • the ends of this floating rack are placed in abutment against force sensors 4 which may consist of one or two strain gages, or by contacts or any other device transmitting signals or information that may be operated by a measuring system, allowing, for example, torque measurements, or dangling forces or driving load, or for controlling a safety system for example in case of overload.
  • the carriage supports a winch 1 comprising a drum 13 on which a cable 14 is wound.
  • the lower end or free end of the cable 14 is provided with a means allowing the suspension of loads of various weights and shapes and of various natures.
  • This means may be constituted by a safety swivel hook 15, which is suspended a basket 23-24 for receiving weights or loads 25.
  • the basket 23 has a damping system 24 consisting of Belleville spring washers .
  • the drum 13 is mounted on the shaft of a reversible gearbox with parallel shaft, coupled to an electric motor 12, provided with a parking brake active by lack of current, forced ventilation, an encoder 22 for vector control, or, for some exercises, a dynamotachymeter.
  • the rotational movement of the drum is transmitted by a set of gearing 16 to a screw / nut system 17 providing in its support, the linear displacement of a cam with several tracks 18. These are intended for contacts or detections of races: slowing down 19, end of travel 20, safety overtravel 21, or initialization zero point 22.
  • a screw / nut system 17 providing in its support, the linear displacement of a cam with several tracks 18. These are intended for contacts or detections of races: slowing down 19, end of travel 20, safety overtravel 21, or initialization zero point 22.
  • an encoder 29 for speed or distance control, the assembly is streamlined .
  • the winch 1 is mounted on a support, for example constituted by an articulated plate 10, via one of its sides and by means of hinges 10A on the carriage C, and resting, via its opposite side, on a load sensor 11 also supported by said carriage.
  • the side of the hinged support opposite the side thereof provided with the hinges 10A is integral with a bearing point consisting of a ball joint ( figures 1-3 ).
  • the winch 1 disposed between the hinges and the support ball joint transmits the force exerted by the load, either to a strain gauge 11 for load measurement / or torque image, or to a spring, or to a damper, or to a sensor and / or to one or more contacts that can be used safely.
  • the gantry for lifting and translation is provided with a balloon detection and control system, consisting of a device making it possible to situate, statically and dynamically, the position of the cable 14 in a field measuring device, at the output of the drum 13 of the winch 1.
  • the balloon detection system can be constituted by a fork sensor 2 and analog type signal, disposed below the drum 13 of the winch 1 and between the two branches which passes the vertical part unwound of the cable 14 said winch.
  • the measurement information resulting from this detection system is exploited by an automatism known per se, for correction or safety intervention.
  • the figure 10 illustrates the method of managing the movement of the winch 1.
  • the carriage C can be arranged to constitute a means for guiding a vertical arm 5 movable axially and able to move in translation with said carriage.
  • the lower end of this arm is provided with a gripping tool holder 8 suspended from the hook 15 of the winch 1 and said arm is for example guided vertically by grooved rollers 9 carried by a vertical face of the carriage.
  • the combination of the winch 1 mounted on a tilting support acting on the weighing sensor 11, with the gripper arm 5, is a particularly advantageous device stacking / unstacking.
  • the overload or underload thresholds being controlled by the sensor and load transmitter, the difference recorded during the docking, indicates the stop descent and controls the action of the gripping device.
  • the gripping device 5-8 is extended, in the upper part, of a cable sheath 6 and is provided with multi-pin plugs 7 so as to make it removable. It is equipped for the practical work of interchangeable grippers: pneumatic, magnetic, or empty.
  • the lifting and translation gantry is equipped for these exercises with a folding table TA ( figure 9 ).
  • This folding table TA allows you to work, either in gripping mode ( figure 6 ), either in lifting mode ( figure 1 ).
  • the architecture of the gantry is broken down into distinct and separate subsets, namely: - operating part, and - control parts or one or more independent boxes 34, 35,36.
  • All the engines and control controls on board the truck is brought, through a cable chain 31, located at the rear of the beam, to a grouping box 32. This ensures both the general power supply of the system with its mandatory protections, and the interconnection connection of the external control box or cabinets 33.
  • These independent boxes 34-35-36 are mounted on feet, the electrical connections are under protective sheaths 33 and connected to the operational part by multi-pin plugs ( figure 11 ). This system makes it possible to work several pupils in separate spots or to interchange these boxes with boxes made by the students.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Control And Safety Of Cranes (AREA)

Claims (6)

  1. Portalkran zum Heben und Verschieben für den Lern- und industriellen Einsatz, mit einem Schlitten (C) der auf einem horizontalen Träger (P) bewegbar ist, welcher an seinen Enden durch zwei Pfosten (M) getragen wird, wobei der genannte Schlitten eine Winde (1) mit einer Trommel (13) trägt, auf der ein Kabel (14) aufgerollt ist, dessen unteres Ende mit Mitteln (15) für die Aufhängung von Lasten (25) ausgestattet ist, wobei der Portalkran mit Detektionsmitteln (2) und mit Baumelsteuerungsmitteln zur Überwachung während der Bewegung der Last für die an der Winde angehängten Last (25) ausgebildet ist, wobei die Mittel angeordnet sind, um die Baumelbewegung zu beseitigen oder um die Auslenkung davon zu begrenzen, dadurch gekennzeichnet, dass die Detektions- und Baumelsteuerungsmittel einen Gabelsensor (2) von einem analogen Signaltyp umfassen, der unter der Trommel (13) der Seilwinde eingebaut (1) ist, so dass der von der Trommel abgewickelte Bereich des vertikalen Teils des Kabels (14) innerhalb des Messbereichs des Sensor (2) liegt und die Detektion von Veränderungen dieser Position während der Bewegung der Last ermöglicht, sowie eine Sicherheitsvorrichtung, welche die emittierten Signale des Sensors (2) verarbeiten kann, um die Translationsbewegung des Schlittens (C) zu stoppen oder zu verlangsamen.
  2. Portalkran zum Heben und Verschieben nach Anspruch 1, dadurch gekennzeichnet, dass der Getriebemotor (26, 27), der die Translationsbewegungen des Schlittens (C) sicherstellt, mit einem Antriebszahnrad (3) versehen ist, das mit einer Zahnstange (3A) zusammenwirkt, die schwimmend entlang des horizontalen Trägers (P) des Portalkrans montiert ist und deren Enden in Anlage gegen Kraftsensoren (4) angeordnet sind, zum Emittieren von Signalen oder Informationen geeignet, um von einem Messsystem oder einem Sicherheitssystem ausgewertet zu werden.
  3. Portalkran zum Heben und Verschieben nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Winde (1) an einem Träger (10) auf dem Schlitten (C) installiert ist und mittels eines seiner Seiten mit dem Schlitten verbunden ist und mittels dieser Seite gegenüberliegenden Seite auf einem Lastsensor und / oder auf einem oder mehreren Sicherheitskontakte aufliegt (11), welche gleichermaßen von dem Schlitten getragen werden.
  4. Portalkran zum Heben und Verschieben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass dieser mit einem vertikalen Arm (5) ausgestattet ist, der mit dem Schlitten axial beweglich und in Translation mit dem Schlitten (C) beweglich ist, wobei das untere Ende des Arms (5) mit einer Werkzeugaufnahme für austauschbare Greifwerkzeuge (8) ausgestattet ist, die an dem unteren Ende des Kabels (14) der Winde (1) aufgehängt sind.
  5. Portalkran zum Heben und Verschieben nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass dieser mit einem Klapptisch (TA) ausgestattet ist, der das Arbeiten, entweder das Heben oder das Verschieben mit Gewichten, oder das Handling mittels Greifen, zur Übung des Aufstapelns/Abstapelns im Bereich der Lernanwendungen ermöglicht.
  6. Portalkran zum Heben und Verschieben nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Architektur in getrennte und unterschiedliche Untergruppen unterteilt ist: nämlich einen Arbeitsabschnitt und Befehlsbereiche oder einen oder mehrere unabhängige und austauschbare Schaltschränke (34, 35, 36).
EP08358014.2A 2007-11-20 2008-11-19 Portalkran zum Verschieben für Lern- oder Industrieanwendungen Not-in-force EP2062845B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708123A FR2923819A1 (fr) 2007-11-20 2007-11-20 Portique pedagogique.

Publications (3)

Publication Number Publication Date
EP2062845A2 EP2062845A2 (de) 2009-05-27
EP2062845A3 EP2062845A3 (de) 2009-12-09
EP2062845B1 true EP2062845B1 (de) 2015-11-18

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EP (1) EP2062845B1 (de)
FR (1) FR2923819A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4463686A4 (de) * 2022-01-10 2026-01-14 Capital Formation Inc System und verfahren zur bestimmung der last auf einem windenhaken

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Publication number Publication date
FR2923819A1 (fr) 2009-05-22
EP2062845A2 (de) 2009-05-27
EP2062845A3 (de) 2009-12-09

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