EP0779234B1 - Dispositif de levage de conteneurs, à ventouse - Google Patents
Dispositif de levage de conteneurs, à ventouse Download PDFInfo
- Publication number
- EP0779234B1 EP0779234B1 EP19960402665 EP96402665A EP0779234B1 EP 0779234 B1 EP0779234 B1 EP 0779234B1 EP 19960402665 EP19960402665 EP 19960402665 EP 96402665 A EP96402665 A EP 96402665A EP 0779234 B1 EP0779234 B1 EP 0779234B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- suction cup
- suction
- raising
- suction line
- 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
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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
- 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
- B66C1/02—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 suction means
- B66C1/0212—Circular shape
-
- 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
- B66C1/02—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 suction means
- B66C1/0256—Operating and control devices
Definitions
- the present invention relates to a device for lifting loads such as containers.
- the device can be used in particular for lifting and moving containers containing radioactive waste.
- the invention finds however more general applications in other areas for charge transfer.
- the lifting and handling devices known suction cups generally include a suction cup grip, a traction cable connecting the suction cup to a winch and a suction line connecting the suction cup to a depressant group.
- the cable is fixed to the suction cup in one position axial of it in order to obtain a traction balanced.
- the suction line is connected to the periphery of the suction cup.
- the cable is generally wound on a drum winch.
- a coil is also provided for wind the flexible suction line.
- conductive wires of an electric cable connect the contact sensor on the suction cup on the suction cup and a central control system.
- the conductor wires are wound either on a spool separate, either with the pull cable on the drum winch.
- the winch drum, the coil of the suction line and possibly the coil of electric cable are first unwound simultaneously to lower the suction cup towards the charge.
- a vacuum is established in a room of suction cup depression to apply firmly on the load.
- the vacuum is established by sucking in air from the vacuum chamber of the suction cup with the group depressant, via driving suction.
- the traction cable is wound up again on the drum.
- the electric cable and the suction lines are also wound on their respective coils.
- a pressure gauge, or a vacuum sensor, placed on the group of depression allows to control in permanently the vacuum established in the suction cup throughout handling of the load.
- the devices described above are of a delicate use and can cause problems especially reliability and security for the handling of dangerous goods containers.
- Suction cup imbalance due to asynchronous winding of the traction cable and the suction line can cause tension important on the latter.
- An object of the present invention is to provide a container lifting device which is reliable and avoids any risk the suction line.
- One goal is in particular to propose a device in which the suction line is not not subjected to tensions due to the suspended load.
- Another object of the invention is to propose a device in which the risk of interlacing the suction line with the pull cable is almost non-existent.
- the lifting cable has a traction frame and includes the pipe suction, so that these parts are not intertwined.
- the traction armature and the pipe part of the same lifting cable are wound simultaneously on the same drum winch. It is precisely the winch drum receiving the lifting cable. This puts driving suction protected from tensions due to winding differential with respect to the lifting cable, like this can occur on known devices.
- the suction line is separated from the cable lifting, i.e. in particular of the armature of traction, under the protective dome, i.e. immediate proximity to the cable tie and a pipe attachment mouth.
- the risk of interlacing due to rotation the suction cup is thus removed.
- the lifting cable includes the pipe, the traction on the suction cup is uniform and the setting it in rotation is unlikely.
- the device can also include a force sensor disposed between the fastening clip and the frame of lifting cable traction.
- the suction cup may include a sensor vacuum (vacuum switch) to control a vacuum in the suction cup area delimited by the base and by a seal.
- a sensor vacuum vacuum switch
- the lifting cable can additionally include conductor lines electric to transmit, to a system of reading of measurement information provided by sensors such as, for example, the vacuum sensor and / or the force sensor.
- the winch reel has a single channel drum.
- the device can also be fitted with a pulley cable return to the drum.
- the lifting device as shown in Figure 1, includes a suction cup 10 for the gripping a load 12, a lifting cable 14 of the suction cup 10 and a reel winch 16 to receive the cable.
- the pulley 18 is advantageously mounted on means shock absorbers.
- a support 20 of the pulley is by example mounted on a spring 22. Thanks to the means shock absorbers, associated with a voltage sensor 44, obtains information about the slack in the cable.
- a length corresponding lifting cable 14 is wound or winch unwinding 16.
- the winch 16 has for this purpose a drum 24 driven by motor means not shown on the figure.
- a depressant group 30, connected to the suction cup 10 allows to create a vacuum in a vacuum chamber of the suction cup to make it adhere firmly to the charge.
- the depressant group 30 is connected to the suction cup via a suction line which according to the invention is included in the cable lifting.
- the drum 24 has a rotating passage pneumatic 32 to connect the suction line to the depressant group.
- the turning passage is connected to the depressant group by a line 34 represented by schematically.
- the device of the invention can be equipped a number of control equipment and safety to guarantee handling of the load which be sure. This equipment is particularly useful when the load is a container for the transport of Hazardous Material.
- the suction cup can be fitted, for example, a vacuum gauge and a force sensor which are described in more detail later in the text.
- the gauges advantageously arranged in the suction cup are electrically connected to a system of read and control 38 by a set of electrical conductors which like driving is included in the lifting cable 14.
- An electric rotary passage 40, disposed at center of the drum 24, and an electrical connection 26 allow to connect electrical conductors passing through cable 14 to the reading and control 38.
- the device according to Figure 1 includes also a tension sensor 44 placed on the springs 22 of the support 20 of the return pulley 18 and connected to the control system 38 by electrical connection 45 shown schematically. Thanks to this sensor, we obtain, as indicated above, information on the "slack" of the cable. This information translated by example a stop of the descent of the load which took support.
- control elements can be planned.
- the return pulley 18 can be equipped with a rotary encoder, connected to the control 38, to measure the amplitude of movement of the load in direction X.
- Figure 2 shows in section and at larger scale the suction cup.
- This essentially comprises a base 50, a protective dome 52 and a zone of depression 54.
- This zone 54 is delimited in its upper part by base 50 and at its periphery by a seal 56.
- the figure also shows the parts constituting the lifting cable 14.
- This comprises, for example, a braided 60 Kevlar® frame (name deposited), a suction line 62 made of a material flexible, a set of insulated electrical conductors 64 and a protective envelope.
- the envelope of protection includes for example a shielding braid 67 and a polyurethane sheath 65.
- the braided frame 60 is fixed to a fastener 70 from base 50, via a sensor of effort 72.
- the fixing is carried out so as to get uniform traction.
- the clip 70 is located on the axis of symmetry.
- the effort sensor 72 makes it possible to measure in particular the weight of the load suspended at the suction cup. It is electrically connected to the read and control 38 through electrical conductors 64 of the cable 14.
- a vacuum sensor such as a pressure gauge (vacuum switch) 74, placed on base 50, is in communication with depression zone 54 for y measure depression. The result of the measurements is also transmitted as electrical signals towards the control unit 38, via the 64 conductors of the cable.
- the suction line 62 is separated from the lifting cable, in particular of the armature 60 and conductors 64 in the immediate vicinity of the base 50.
- immediate vicinity of the base is meant a region 66 surrounded by the protective dome 52.
- the protective dome 52 whose function is also to ballast the suction cup, presents in its top part a passage 68 for cable 14.
- the dome is preferably secured to the base 50 and the cable 14 to limit the risk of interlacing even in the region 66.
- Line 62 is connected to a passage 76 in the base 50 which communicates with the depression zone.
- the seal 56 is first applied to a substantially flat surface of load. The air in depression zone 54 is then sucked through mouth 76 to fix firmly the suction cup.
- Figure 3 shows in detail the take-up drum of the device of figure 1.
- Two flanges 80, 82 arranged concentrically on a cylinder 84 form the single-channel drum 24.
- the edges 86, 88 of the flanges 80, 82 are flared for facilitate cable winding 14.
- each winding coil of the lifting cable 14 is superimposed to the previous turn. This avoids the maximum cable twist and pipe crushing cable suction.
- the suction line is connected to the passage pneumatic turning 32 by a fitting 90.
- the pneumatic rotary passage 32 is disposed along the axis of rotation of the drum. He is himself connected by a line 34 to the depressant group (see figure 1).
- An electric rotary passage 40 is connected the same way to the electrical conductors of cable 14 to connect them to the control system (not visible on the face).
- the return pulley 18 visible in FIG. 1 is preferably also a single-track pulley.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Description
- une ventouse à vide pour la préhension de la charge,
- un câble de levage de la ventouse,
- un treuil à enrouleur pour recevoir le câble,
- une conduite d'aspiration reliant la ventouse à un groupe dépresseur.
- une base, avec une attache de fixation du câble reliée à l'armature de traction, et un passage d'aspiration relié à la conduite d'aspiration, et
- un dôme de protection recouvrant la base et entourant une région de la ventouse dans laquelle la conduite d'aspiration est séparée du câble de levage.
- la figure 1 est une représentation schématique d'un dispositif de levage conforme à l'invention,
- la figure 2 est une vue en coupe, à plus grande échelle, d'une ventouse du dispositif de levage de la figure 1,
- la figure 3 est une vue en coupe transversale, à plus grande échelle, d'un tambour d'enroulement du dispositif de levage de la figure 1.
Claims (11)
- Dispositif de levage de charges à ventouse comportant :une ventouse (10) pour la préhension de la charge (12),un câble de levage (14) de la ventouse,un treuil (16) à enrouleur pour recevoir le câble,une conduite d'aspiration reliant la ventouse à un groupe dépresseur (30),
- Dispositif selon la revendication 1, caractérisé en ce que la ventouse (10) comporte :une base (50) avec une attache de fixation (70) du câble reliée à l'armature de traction (60), un passage d'aspiration (76) relié à la conduite d'aspiration (62), etun dôme de protection (52) recouvrant la base (50) et entourant une région (66) de la ventouse dans laquelle la conduite d'aspiration (62) est séparée du câble de levage (14).
- Dispositif selon la revendication 2, caractérisé en ce qu'il comporte un capteur d'effort (72) disposé entre l'attache de fixation (70) et l'armature (60) de traction du câble de levage.
- Dispositif selon la revendication 1, caractérisé en de que la ventouse comporte un capteur de vide (74) pour mesurer une pression résiduelle dans une zone de dépression (54) de la ventouse délimitée par une base (50) de la ventouse et par un joint d'étanchéité (56).
- Dispositif selon la revendication 4, caractérisé en ce que le câble de levage (14) comporte en outre des lignes de conducteurs électriques (64) pour transmettre des informations de mesure fournies par le capteur de vide et/ou le capteur d'effort vers un système de lecture (38).
- Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le treuil (16) à enrouleur comporte un tambour d'enroulement monovoie (24).
- Dispositif selon les revendications 4 et 6, caractérisé en ce que le tambour d'enroulement (24) présente un passage tournant électrique (40) pour relier les lignes de conducteurs (64) électriques du câble au système de lecture (38).
- Dispositif selon la revendication 6 ou 7, caractérisé en ce que le tambour d'enroulement présente un passage tournant pneumatique (32), pour relier la conduite d'aspiration (32) au groupe dépresseur (30).
- Dispositif selon la revendication 6, caractérisé en ce qu'il comporte une poulie de renvoi du câble vers le tambour d'enroulement.
- Dispositif selon la revendication 9, caractérisé en ce qu'il comporte un support (20) de la poulie monté sur amortisseur (22).
- Dispositif selon la revendication 9, caractérisé en ce que la poulie comporte un codeur rotatif pour mesurer le déplacement de la ventouse.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9514627 | 1995-12-11 | ||
FR9514627A FR2742137B1 (fr) | 1995-12-11 | 1995-12-11 | Dispositif de levage de conteneurs, a ventouse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0779234A1 EP0779234A1 (fr) | 1997-06-18 |
EP0779234B1 true EP0779234B1 (fr) | 2001-10-31 |
Family
ID=9485354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960402665 Expired - Lifetime EP0779234B1 (fr) | 1995-12-11 | 1996-12-09 | Dispositif de levage de conteneurs, à ventouse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0779234B1 (fr) |
DE (1) | DE69616486T2 (fr) |
FR (1) | FR2742137B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE525903C2 (sv) * | 2004-05-18 | 2005-05-24 | Vaculex Ab | En vakuumtublyftanordning och ett förfarande för förflyttning av en last medelst en vacuumtublyftanordning |
GB2541729A (en) * | 2015-08-28 | 2017-03-01 | Palamatic Ltd | Apparatus and method for lifting items |
DE202018101824U1 (de) | 2018-04-04 | 2018-04-24 | SCHMIETEX ENGINEERING GmbH | Manipulator zum bewegen von lasten |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT959618B (it) * | 1971-08-21 | 1973-11-10 | Felten U Guilleaume Ag | Cavo tubolare flessibile |
SE446621B (sv) * | 1980-02-04 | 1986-09-29 | Sten Andersson | Vakuumlyftanordning for gods eller andra foremal |
US4336415A (en) * | 1980-05-16 | 1982-06-22 | Walling John B | Flexible production tubing |
DE3934922C2 (de) * | 1989-10-20 | 1993-11-04 | Schmalz J Gmbh | Hebevorrichtung |
-
1995
- 1995-12-11 FR FR9514627A patent/FR2742137B1/fr not_active Expired - Lifetime
-
1996
- 1996-12-09 DE DE1996616486 patent/DE69616486T2/de not_active Expired - Fee Related
- 1996-12-09 EP EP19960402665 patent/EP0779234B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69616486D1 (de) | 2001-12-06 |
FR2742137B1 (fr) | 1998-01-16 |
FR2742137A1 (fr) | 1997-06-13 |
EP0779234A1 (fr) | 1997-06-18 |
DE69616486T2 (de) | 2002-05-29 |
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