EP3904269A1 - Hose lifter - Google Patents
Hose lifter Download PDFInfo
- Publication number
- EP3904269A1 EP3904269A1 EP21169627.3A EP21169627A EP3904269A1 EP 3904269 A1 EP3904269 A1 EP 3904269A1 EP 21169627 A EP21169627 A EP 21169627A EP 3904269 A1 EP3904269 A1 EP 3904269A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- locking member
- connection
- lifter
- holding
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 36
- 238000010168 coupling process Methods 0.000 claims abstract description 36
- 238000005859 coupling reaction Methods 0.000 claims abstract description 36
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241001295925 Gegenes Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- 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
- B66C1/0218—Safety measures, e.g. sensors, duplicate functions
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- 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
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- 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
-
- 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
- B66C1/0293—Single lifting units; Only one suction cup
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
Definitions
- the invention relates to a tube lifter comprising a lifting tube which has a tube interior and can be shortened by applying negative pressure to the tube interior, and with a suction gripping device arranged at one end of the lifting tube, which can be supplied with negative pressure through the tube interior for sucking and lifting an object is, and with an operating device that has a suction connection for flow connection with the suction gripping device, a lifting tube connection for flow connection with the inner space of the lifting tube and a valve device for controlling flow connections and a manually operated operating element, and with a holding device for fixing the operating device together Suction gripping device and the lifting tube in the shortened, collapsed state of the lifting tube to prevent unintentional lowering or falling, the holding device having two holding points which are opposite to one another with respect to the lifting tube and the operating device and at which a load-bearing element of the holding device for fixing the operating device together with the suction gripping device and the lifting tube engage can.
- Such tube lifters are often arranged on crane arms with a longitudinally displaceable suspension and can then be grasped by an operator if necessary and used for sucking in, lifting and moving any object.
- the lifting tube is in a foreshortened condition and is typically contracted to its minimum length, which is referred to as "collapsed". If the application of negative pressure to the lifting tube is interrupted in this state, there is a risk that the lifting tube together with the operating device and suction gripping device will lower or even fall. It has therefore already been proposed to fix the tube lifter in this contracted state by means of a holding device.
- the holding device typically engages the operating device or the suction gripping device.
- a holding device which comprises load-bearing elements in the form of belts, which extend down from above and which can be suspended by means of ring-shaped holding eyes at holding points of the operating device, which are formed by protruding bolts, in order to keep the tube lifter in the contracted position
- load-bearing elements in the form of belts, which extend down from above and which can be suspended by means of ring-shaped holding eyes at holding points of the operating device, which are formed by protruding bolts, in order to keep the tube lifter in the contracted position
- an operator has to use one hand Take one of the eyelets attached to the belt ends and guide it over the retaining bolt and then do the same on the opposite side.
- the release of this fixing position is equally complex, since the user has to reach around several times.
- the present invention is based on the object of simplifying the handling of the tube lifter during commissioning and decommissioning and, in particular, of shortening the set-up times for this. Regardless of this, however, operational safety should not be reduced, but rather increased.
- this object is achieved according to the invention in that there is a dimensionally stable locking member which is in a load-bearing connection with the load-bearing element and which is designed and arranged in such a way that it can form a load-bearing fixing connection with both holding points at the same time, and that the single locking member has two coupling areas for this purpose, which are arranged so that they can form the releasable fixing connection with the opposing holding points.
- a dimensionally stable and preferably rigid locking member which has both holding points at the same time grab and can enter into a load-bearing fixing connection with both breakpoints at the same time, so that a unintentional falling of the operating device with the suction gripping device attached to it can be prevented and the tube lifter can be brought into an operationally safe state in which the vacuum supply to the lifting tube can also be switched off.
- the holding device in particular its load-bearing element, can comprise a belt section or belt sections on which the dimensionally stable and preferably rigid locking member is held, which will be explained below.
- the fixation of the tube lifter is preferably effected by or by means of the single locking member at both holding points.
- the two coupling areas of the locking member and the two holding points are designed in such a way that the releasable fixing connection is a mechanical, form-fitting holding connection.
- a detachable fixing connection is established in the tube lifter by means of the locking member by hooking, rear hooking or reaching under the holding points.
- the two coupling areas are designed in the shape of hooks, an open engagement area of the hook being arranged on an underside of the locking member.
- the locking member can thus be placed on the holding points, in particular due to the force of gravity, and can be brought into the fixing position simultaneously for both holding points by means of a short adjusting movement.
- the breakpoints could in principle be formed by any areas that can be grasped or grasped from behind at a lower end of the lifting tube or at the operating device or at the suction gripping device.
- the two holding points are formed by outwardly protruding bolts or pins, in particular with a free end with an enlarged diameter.
- the optionally provided free end with enlarged diameter serves as a safeguard against loss, so to prevent the locking member from sliding over the free end of the bolt or pin.
- this additional feature is unnecessary if the locking element is designed or the distance between the two coupling areas of the locking element is selected so close to one another that the coupling areas cannot slide over the extent of the bolts or pins.
- the dimensionally stable locking member is connected to the load-bearing element in a pivotable and / or floating manner.
- the holding device is located with its Components, that is, preferably also with the dimensionally stable locking member, well above the operating device and the suction gripping device and is therefore annoying for an operator.
- the aforementioned pivotable or floating mounting of the locking member does not impair the mobility of the lifting tube.
- the load-bearing element is an arrangement of vertically extending straps provided outside the lifting tube.
- the holding device does not interfere with the operability and, in particular, the mobility of the lifting tube.
- the load-bearing element of the holding device of the tube lifter can be held or releasably suspended on a crane arm that also carries the lifting tube, in particular on a running element of a crane arm.
- the load-bearing element is made of a pliable material
- a connection with the dimensionally stable locking element can be established in a particularly simple manner, for example by having openings in the dimensionally stable locking element that form eyelets, in particular slot-shaped openings, which are also open-edged on one side can be provided.
- the load-bearing Element and the dimensionally stable locking member acting at points connecting means such as rings, shackles or the like are provided. In this way, too, a pivotable and / or floating arrangement of the rigid locking member on the load-bearing element of the holding device can be achieved in a simple manner.
- the locking element be acted upon by an elastic element which pretensions the locking element towards a position with respect to the lifting tube or the load-bearing element.
- a defined position of the locking member is given in the released state of the holding device, that is, during operation of the tube lifter, so that the locking member does not swing around in an uncontrolled manner.
- such a defined position in the unlocked state makes it easier to grasp and thus the maneuverability of the holding device for bringing about a renewed fixation of the tube lifter in the closed state, and the operator can get used to repeated actuation actions.
- the locking element is designed in the shape of a U-bracket and can be arranged so that it can encompass the lifting tube or the operating device in an approximately horizontal plane from the outside, the two coupling areas in the area of the free ends of the U -Form are arranged.
- the operator is the locking member in the area of the transverse Grip leg between the two legs carrying the coupling areas.
- the locking member surrounds the lifting tube in an approximately horizontal plane from the outside to form a frame. This could motivate an embodiment that allows the locking member to be grasped on one side or the opposite other side during handling.
- the locking member can be brought into a fixation connection (locking) and out of a fixation connection (loosening) at the same time by manual one-hand actuation with respect to both holding points.
- the locking member comprises a manual grip area, on which it can be gripped with one hand of the operator and in particular can be pivoted and / or adjusted linearly.
- the cross strut or apex strut of the U-shape preferably forms a manual grip area that a user can comfortably grasp and thus operate the locking member with just one hand.
- the manual one-hand operation is a pivoting operation of the locking member combined with a short linear adjusting movement of the locking member.
- the linear adjusting movement can be, for example, a pulling movement or a sliding movement, in particular in each case approximately in a horizontal plane.
- the locking element automatically enters the detachable fixing connection when the lifting tube is raised when the lifting tube reaches its shortened, collapsed state, in that the two coupling areas of the locking element each have a centering opening for the holding points, so that the stopping points are automatically and compulsorily detected by the respective centering opening when moving up and are positively guided into a fixing position that engages behind the vertical direction in the respective coupling area.
- the locking member can be actuated manually for the purpose of releasing the fixing position.
- the locking member has a link guide track for each stopping point, which then lead to the coupling areas in order to form an engagement behind the stopping points that causes the fixation position.
- the two coupling regions of the locking member and the holding points are designed so that the releasable holding connection is a magnetic or electromagnetic holding connection.
- the holding points and coupling areas comprise magnetic or magnetizable materials.
- the Figures 1 to 3 show a first embodiment of a tube lifter 2 according to the invention.
- the tube lifter 2 comprises a lifting tube 4, of which only a vertically lower end area is shown, as well as an operating device 6 and a suction gripping device 8 connected vertically below the operating device 6.
- the operating device 6 comprises a lifting tube connection 10 for fastening with the lifting tube 4 and for establishing a flow connection with a tube interior 12 of the lifting tube 4.
- the operating device comprises an interface, referred to as a suction connection 14, to the suction gripping device 8.
- the operating device 6 comprises, in a manner known per se, a valve device as well as a control mechanism and a manually operable operating element 16 which is ergonomically provided on a manually grippable handle 18 of the operating device 6.
- a vacuum-generating device not shown
- the hose interior 12 and the suction gripping device 8 which can be placed on an object to be sucked in, lifted and displaced, can be established in a desired and known manner.
- tube lifters of the type mentioned above are either suspended in a stationary manner or provided so that they can be moved on struts or crane arms.
- the operating device 6 is used to create a vacuum in the tube interior 12 of the lifting tube 4 such that the tube lifter 2 is upwardly contraction of the lifting tube 4 is driven into its shortened and typically contracted configuration to the stop.
- the tube lifter 2 is fixed in this state by means of a holding device 20. This holding device 20 has been improved according to the invention.
- the holding device 20 further comprises two horizontally and diametrically opposite holding points 26, for example in the form of protruding holding bolts 28, which in this embodiment have a free end 30 that is widened in the shape of a flange.
- the holding device 20 further comprises a dimensionally stable locking member 32 which is formed from a single component and which is preferably designed in the form of a U-bracket here.
- This locking member 32 is detachably connected, for example, to two diametrically opposite belt sections 22 by having an eyelet-forming, for example elongated, slot-shaped opening 34 into which the belt section 22 in question engages or is in turn suspended with a loop-shaped end.
- the bow-shaped locking member 32 is pivotable and, so to speak, held in a floating manner on the belt sections 22.
- a differently designed connection of the locking member 32 with the two Belt sections 22 would also be conceivable as long as the locking member 32 is pivotable and floating on the belt sections.
- the locking member 32 also has two coupling areas 36, 38 which are provided diametrically opposite one another in accordance with the arrangement of the holding points 26.
- the coupling areas 36, 38 are hook-shaped in the case shown as an example.
- a plane of this hook shape is each vertically oriented so that the respective coupling area 36, 38 forms a through-opening 40, which is radial with respect to the lifting tube 4, for the retaining bolts 28 (In Figure 5 best visible when not fixed).
- This passage opening 40 is not closed due to the hook shape, but opens outward via an inlet opening 42, so that the respective holding point 26 designed as a retaining bolt 28 via this inlet opening 42 into the Figures 1 to 3 position shown can reach, which will be described below.
- the locking member 32 is additionally held by means of an elastically stretchable element 44.
- This can be a rubber band or any elastic or elasticized element 44 per se.
- it is arranged, for example, between a belt section 22 and a region 46 of the locking member 32, which is somewhat spaced from the coupling regions 36, 38 and from the elongated slot-shaped openings 34 for the engagement of the belt sections 22.
- a force that gives away the locking element 32 is generated on the locking element 32 and introduced into it. This force has the effect that the locking member 32 is not locked, i.e.
- the lifting tube 4 for contracting that is to say the tube lifter 2 for moving upward
- the operator grips a manual grip area 48 of the locking member 32 with one hand and swivels the floating locking member 32 in the direction of the arrow 50 in FIG Figure 5 downward.
- the operator can exert a relatively short linear pushing and / or pulling movement on the locking member 32 in the horizontal direction, so that the bolt-shaped holding point 26 can reach the access opening 40 of the respective coupling area 36, 38 via the entry opening 42, so that the in Figures 1 to 4 shown fixing position is reached.
- the slot-shaped opening 34 for example here, on which the respective belt section 22 is hung, is deliberately arranged somewhat horizontally offset with respect to the center point of the access opening 40, so that the load hung there automatically tilts the locking member 32, that is Is realized due to gravity when the load of the operating device 6 together with the suction gripping devices 8 loads the locking member 32.
- this is not necessary in the present case, since the laterally protruding holding points 26 are received in a stable manner in the hook-shaped delimited penetration opening 40 of the coupling areas 36, 38 and that Locking member 32 remains stable in its horizontal position.
- the embodiment according to Figure 4 differs from the embodiment according to Figures 1-3 only in that the retaining bolts 28 do not have a widened free end. This is also not necessary because the distance between the coupling areas 36, 38 of the locking member 32 is dimensioned in such a way that the locking member 32 can indeed grip around the operating device 6 and the lifting tube 4, but not over the when engaging with the holding points 26 or holding bolts 28 free end of a retaining bolt 28 can slide away.
- a magnetic or electromagnetic coupling or fixing is provided instead of or in addition to a mechanical engagement connection between the coupling areas and the holding points.
- magnetic or magnetizable materials would be provided in the area of the holding points 26 and the coupling areas 36, 38.
- FIG. 7 schematically illustrates a further embodiment in which the locking member 32 has a link guide track 52 on each side.
- the stopping point 26 arrives at this link guide track 52 of the locking member 32 and is then positively guided and automatically brought into the final fixing position behind the gate at the end of the link track 52, in which the tube lifter 2 is fixed against falling.
- the Coupling areas 36, 38 of the locking member 32 on both sides each have a centering opening for the holding points, so that the holding points 26 are automatically and compulsorily captured by a respective centering opening 54 when they are raised and are positively guided into a fixed position at the respective coupling area 36, 38 that engages behind the vertical direction.
- FIG 8 a perspective overall view of the tube lifter 2 according to the invention is also shown.
- the overall construction of the holding device 20 can be seen with belt sections 22, of which at least two opposite belt sections 22 form the load-bearing element 24 of the holding device 20.
- the belt sections 22 are preferably detachably connected at the top to an exemplary metallic flange-shaped retaining plate 60.
- the holding plate 60 rests flat on a connecting flange 62 of the lifting tube 4 and is held by it.
- the connection flange 62 of the lifting tube 4 extends with a loadable connection tubing 64 through an opening in the holding plate 60 and can be connected to a tubing carrying the lifting tube under vacuum.
- the lifting tube 4 can also be suspended in any other arbitrary manner, in which case the connecting flange 62 of the lifting tube 4 can have, for example, hooks or eyes for attaching to a crane arm or crane truck.
- a vacuum connection of the lifting tube 4 is then preferably implemented via flexible, flexible lines.
- the holding device 20 itself can be releasably fastened directly to a support arm, crane arm or crane truck and does not rest on the connecting flange 62 of the lifting tube 4 as shown.
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- Engineering & Computer Science (AREA)
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- Load-Engaging Elements For Cranes (AREA)
Abstract
Die Erfindung betrifft einen Schlauchheber (2), der einen Hubschlauch (4) umfasst, welcher einen Schlauchinnenraum (12) aufweist und durch Beaufschlagung des Schlauchinnenraums (12) mit Unterdruck verkürzbar ist, und mit einer an einem Ende des Hubschlauchs (4) angeordneten Sauggreifvorrichtung (8), welche durch den Schlauchinnenraum (12) hindurch zum Ansaugen und Anheben eines Gegenstands mit Unterdruck versorgbar ist, und mit einer Bedienvorrichtung (6), und mit einer Halteeinrichtung (20) zum Fixieren der Bedienvorrichtung (6) samt Sauggreifvorrichtung (8) und des Hubschlauchs (4) im verkürzten zusammengefahrenen Zustand des Hubschlauchs zur Verhinderung eines ungewollten Herabsinkens oder Herabfallens, wobei die Halteeinrichtung (20) zwei bezüglich des Hubschlauchs (4) und der Bedienvorrichtung (6) einander gegenüberliegende Haltepunkte (26) aufweist, an denen ein lasttragendes Element (24) der Halteeinrichtung (20) zum Fixieren der Bedienvorrichtung (6) samt Sauggreifvorrichtung (8) und des Hubschlauchs (4) angreifen kann, wobei ein formstabiles Verriegelungsorgan (32) vorhanden ist, das mit dem lasttragenden Element (24) in belastbarer Verbindung steht und das so ausgebildet und anordenbar ist, dass es mit beiden Haltepunkten (26) zugleich eine lasttragende Fixierverbindung ausbilden kann, und dass das Verriegelungsorgan (32) hierfür zwei Kopplungsbereiche (36, 38) aufweist, die so angeordnet sind, dass sie mit den einander gegenüberliegenden Haltepunkten (26) die lösbare Fixierverbindung ausbilden können.The invention relates to a tube lifter (2) comprising a lifting tube (4) which has a tube interior (12) and can be shortened by applying negative pressure to the tube interior (12), and with a suction gripping device arranged at one end of the lifting tube (4) (8), which can be supplied with negative pressure through the hose interior (12) for sucking in and lifting an object, and with an operating device (6), and with a holding device (20) for fixing the operating device (6) together with the suction gripping device (8) and of the lifting tube (4) in the shortened, contracted state of the lifting tube to prevent unintentional lowering or falling, the holding device (20) having two holding points (26) opposite one another with respect to the lifting tube (4) and the operating device (6), at which a load-bearing element (24) of the holding device (20) for fixing the operating device (6) together with the suction gripping device ( 8) and the lifting tube (4) can attack, wherein a dimensionally stable locking member (32) is present, which is in a load-bearing connection with the load-bearing element (24) and which is designed and arranged so that it has both holding points (26) at the same time can form a load-bearing fixing connection, and that the locking member (32) has two coupling areas (36, 38) for this purpose, which are arranged so that they can form the releasable fixing connection with the opposing holding points (26).
Description
Die Erfindung betrifft einen Schlauchheber, der einen Hubschlauch umfasst, welcher einen Schlauchinnenraum aufweist und durch Beaufschlagung des Schlauchinnenraums mit Unterdruck verkürzbar ist, und mit einer an einem Ende des Hubschlauchs angeordneten Sauggreifvorrichtung, welche durch den Schlauchinnenraum hindurch zum Ansaugen und Anheben eines Gegenstands mit Unterdruck versorgbar ist, und mit einer Bedienvorrichtung, die einen Sauganschluss zur Strömungsverbindung mit der Sauggreifvorrichtung, einen Hubschlauchanschluss zur Strömungsverbindung mit dem Schlauchinnenraum des Hubschlauchs sowie eine Ventileinrichtung zur Steuerung von Strömungsverbindungen und ein manuell betätigbares Bedienelement aufweist, und mit einer Halteeinrichtung zum Fixieren der Bedienvorrichtung samt Sauggreifvorrichtung und des Hubschlauchs im verkürzten zusammengefahrenen Zustand des Hubschlauchs zur Verhinderung eines ungewollten Herabsinkens oder Herabfallens, wobei die Halteeinrichtung zwei bezüglich des Hubschlauchs und der Bedienvorrichtung einander gegenüberliegende Haltepunkte aufweist, an denen ein lasttragendes Element der Halteeinrichtung zum Fixieren der Bedienvorrichtung samt Sauggreifvorrichtung und des Hubschlauchs angreifen kann.The invention relates to a tube lifter comprising a lifting tube which has a tube interior and can be shortened by applying negative pressure to the tube interior, and with a suction gripping device arranged at one end of the lifting tube, which can be supplied with negative pressure through the tube interior for sucking and lifting an object is, and with an operating device that has a suction connection for flow connection with the suction gripping device, a lifting tube connection for flow connection with the inner space of the lifting tube and a valve device for controlling flow connections and a manually operated operating element, and with a holding device for fixing the operating device together Suction gripping device and the lifting tube in the shortened, collapsed state of the lifting tube to prevent unintentional lowering or falling, the holding device having two holding points which are opposite to one another with respect to the lifting tube and the operating device and at which a load-bearing element of the holding device for fixing the operating device together with the suction gripping device and the lifting tube engage can.
Derartige Schlauchheber werden häufig an Kranarmen mit längsverschieblicher Aufhängung angeordnet und können dann bei Bedarf von einer Bedienperson ergriffen und zum Ansaugen, anheben und verlagern eines an sich beliebigen Gegenstands verwendet werden. Wenn der Schlauchheber nicht benötigt wird, befindet sich der Hubschlauch in einem verkürzten Zustand und ist typischerweise auf seine minimale Längserstreckung kontrahiert, was als "auf Block zusammen gefahren" bezeichnet wird. Wenn in diesem Zustand die Unterdruck Beaufschlagung des Hubschlauchs unterbrochen wird, so besteht die Gefahr, dass sich der Hubschlauch samt Bedienvorrichtung und Sauggreifvorrichtung nach unten absenkt oder gar herabfällt. Daher ist bereits vorgeschlagen worden, den Schlauchheber diesem kontrahierten Zustand mittels einer Halteeinrichtung zu fixieren. Die Halteeinrichtung greift dabei typischerweise an der Bedienvorrichtung oder der Sauggreifvorrichtung an. Im Stand der Technik ist hierfür eine Haltevorrichtung bekannt, die lasttragende Elemente in Form von Gurten umfasst, die sich von oben herab erstrecken und die mittels ringförmiger Halteösen an Haltepunkten der Bedienvorrichtung, die von abstehenden Bolzen gebildet sind, einhängbar sind, um den Schlauchheber im kontrahierten Zustand des Hubschlauchs lösbar zu fixieren. Hierfür muss eine Bedienperson mit der einen Hand eine der an den Gurtenden befestigten Ösen ergreifen und über den Haltebolzen führen und daran anschließend dasselbe auf der gegenüberliegenden Seite ausführen. Auch das Lösen dieser Fixierstellung gestaltet sich gleichermaßen aufwendig, da der Benutzer hierbei mehrfach umgreifen muss.Such tube lifters are often arranged on crane arms with a longitudinally displaceable suspension and can then be grasped by an operator if necessary and used for sucking in, lifting and moving any object. When the tube lifter is not needed, the lifting tube is in a foreshortened condition and is typically contracted to its minimum length, which is referred to as "collapsed". If the application of negative pressure to the lifting tube is interrupted in this state, there is a risk that the lifting tube together with the operating device and suction gripping device will lower or even fall. It has therefore already been proposed to fix the tube lifter in this contracted state by means of a holding device. The holding device typically engages the operating device or the suction gripping device. In the prior art, a holding device is known for this, which comprises load-bearing elements in the form of belts, which extend down from above and which can be suspended by means of ring-shaped holding eyes at holding points of the operating device, which are formed by protruding bolts, in order to keep the tube lifter in the contracted position To fix the state of the lifting tube in a detachable manner. For this an operator has to use one hand Take one of the eyelets attached to the belt ends and guide it over the retaining bolt and then do the same on the opposite side. The release of this fixing position is equally complex, since the user has to reach around several times.
Der vorliegenden Erfindung liegt hiervon ausgehend die Aufgabe zugrunde, die Handhabung des Schlauchhebers bei der Inbetriebnahme und bei der Außerbetriebnahme zu vereinfachen und insbesondere die Rüstzeiten hierfür zu verkürzen. Dessen ungeachtet soll aber die Betriebssicherheit nicht reduziert werden, sondern eher erhöht werden.Based on this, the present invention is based on the object of simplifying the handling of the tube lifter during commissioning and decommissioning and, in particular, of shortening the set-up times for this. Regardless of this, however, operational safety should not be reduced, but rather increased.
Diese Aufgabe wird ausgehend von einem Schlauchheber der genannten Art erfindungsgemäß dadurch gelöst, dass ein formstabiles Verriegelungsorgan vorhanden ist, das mit dem lasttragenden Element in belastbarer Verbindung steht und das so ausgebildet und anordenbar ist, dass es mit beiden Haltepunkten zugleich eine lasttragende Fixierverbindung ausbilden kann, und dass das einzige Verriegelungsorgan hierfür zwei Kopplungsbereiche aufweist, die so angeordnet sind, dass sie mit den einander gegenüberliegenden Haltepunkten die lösbare Fixierverbindung ausbilden können.Based on a tube lifter of the type mentioned, this object is achieved according to the invention in that there is a dimensionally stable locking member which is in a load-bearing connection with the load-bearing element and which is designed and arranged in such a way that it can form a load-bearing fixing connection with both holding points at the same time, and that the single locking member has two coupling areas for this purpose, which are arranged so that they can form the releasable fixing connection with the opposing holding points.
Es wird also erfindungsgemäß vorgeschlagen, anstelle zweier ringförmiger Ösen an einem jeweiligen unteren Ende zweier Gurte, die unter aufwändigem Umgreifen mit der einen bzw. der anderen Hand ergriffen und in Betriebsposition gebracht werden müssen, ein formstabiles und vorzugsweise starres Verriegelungsorgan vorzusehen, welches beide Haltepunkte zugleich ergreifen und mit beiden Haltepunkten zugleich eine lasttragende Fixierverbindung eingehen kann, so dass ein unbeabsichtigtes Herabfallen der Bedienvorrichtung mit der daran befestigten Sauggreifvorrichtung verhindert werden kann und der Schlauchheber in einen betriebssicheren Zustand gebracht werden kann, in dem die Unterdruckversorgung des Hubschlauchs auch ausgeschaltet werden kann.It is therefore proposed according to the invention, instead of two ring-shaped eyelets at a respective lower end of two straps, which have to be gripped with one or the other hand and brought into the operating position, a dimensionally stable and preferably rigid locking member which has both holding points at the same time grab and can enter into a load-bearing fixing connection with both breakpoints at the same time, so that a unintentional falling of the operating device with the suction gripping device attached to it can be prevented and the tube lifter can be brought into an operationally safe state in which the vacuum supply to the lifting tube can also be switched off.
Wenn vorstehend von einem formstabilen oder starren Verriegelungsorgan die Rede ist, so schließt dies eine gewisse Biegsamkeit nicht aus, sondern es ist damit eine Formstabilität gemeint, die es gestattet, das Verriegelungsorgan für beide Haltepunkte gleichzeitig in eine Fixierstellung mit den Haltepunkten zu bringen; das Verriegelungsorgan ist also insbesondere nicht aus einem flexiblen Gurtabschnitt gebildet. Dennoch kann die Halteeinrichtung, insbesondere deren lasttragendes Element einen Gurtabschnitt oder Gurtabschnitte umfassen, an dem bzw. denen das formstabile und vorzugsweise starre Verriegelungsorgan seinerseits gehalten ist, was nachfolgend noch erläutert werden wird. Bevorzugtermaßen wird die Fixierung des Schlauchhebers durch oder mittels des einzigen Verriegelungsorgans an beiden Haltepunkten bewirkt.If a dimensionally stable or rigid locking member is mentioned above, this does not exclude a certain flexibility, but it is meant with a dimensional stability that allows the locking member for both breakpoints to be brought into a fixation position with the breakpoints at the same time; the locking member is therefore in particular not formed from a flexible belt section. Nevertheless, the holding device, in particular its load-bearing element, can comprise a belt section or belt sections on which the dimensionally stable and preferably rigid locking member is held, which will be explained below. The fixation of the tube lifter is preferably effected by or by means of the single locking member at both holding points.
Es erweist sich als zweckmäßig und vorteilhaft, wenn die zwei Kopplungsbereiche des Verriegelungsorgans und die zwei Haltepunkte so ausgebildet sind, dass die lösbare Fixierverbindung eine mechanische formschlüssige Halteverbindung ist. Solchenfalls wird mittels des Verriegelungsorgans durch ein Einhaken, Hinterhaken oder Untergreifen der Haltepunkte, eine lösbare Fixierverbindung bei dem Schlauchheber hergestellt.It has proven to be expedient and advantageous if the two coupling areas of the locking member and the two holding points are designed in such a way that the releasable fixing connection is a mechanical, form-fitting holding connection. In such a case, a detachable fixing connection is established in the tube lifter by means of the locking member by hooking, rear hooking or reaching under the holding points.
Hierbei erweist sich als vorteilhaft, wenn die zwei Kopplungsbereiche hakenförmig ausgebildet sind, wobei ein offener Eingriffsbereich des Hakens an einer Unterseite des Verriegelungsorgans angeordnet ist. Das Verriegelungsorgan lässt sich so insbesondere Schwerkraftbedingt auf die Haltepunkte auflegen und durch eine kurze Stellbewegung gleichzeitig für beide Haltepunkte in Fixierstellung bringen.It proves to be advantageous here if the two coupling areas are designed in the shape of hooks, an open engagement area of the hook being arranged on an underside of the locking member. The locking member can thus be placed on the holding points, in particular due to the force of gravity, and can be brought into the fixing position simultaneously for both holding points by means of a short adjusting movement.
Die Haltepunkte könnten prinzipiell von an sich beliebigen hintergreifbaren oder untergreifbaren Bereichen bei einem unteren Ende des Hubschlauchs oder bei der Bedienvorrichtung oder bei der Sauggreifvorrichtung gebildet sein. Es erweist sich indessen weiter als vorteilhaft, wenn die zwei Haltepunkte von nach außen vorstehenden Bolzen oder Stiften, insbesondere mit einem durchmesservergrößerten freien Ende gebildet sind. Hierdurch kann auf einfache Weise eine Fixierverbindung hergestellt werden. Das optional vorgesehene durchmesservergrößerte freie Ende dient als Verliersicherung, um also zu verhindern, dass das Verriegelungsorgan über das freie Ende des Bolzens oder Stifts abgleitet. Dieses zusätzliche Merkmal ist aber entbehrlich, sofern das Verriegelungsorgan so ausgebildet bzw. der Abstand der beiden Kopplungsbereiche des Verriegelungsorgans so nahe beieinander gewählt ist, dass die Kopplungsbereiche gar nicht über die Erstreckung der Bolzen oder Stifte abgleiten können.The breakpoints could in principle be formed by any areas that can be grasped or grasped from behind at a lower end of the lifting tube or at the operating device or at the suction gripping device. However, it also proves to be advantageous if the two holding points are formed by outwardly protruding bolts or pins, in particular with a free end with an enlarged diameter. In this way, a fixing connection can be established in a simple manner. The optionally provided free end with enlarged diameter serves as a safeguard against loss, so to prevent the locking member from sliding over the free end of the bolt or pin. However, this additional feature is unnecessary if the locking element is designed or the distance between the two coupling areas of the locking element is selected so close to one another that the coupling areas cannot slide over the extent of the bolts or pins.
Das formstabile Verriegelungsorgan ist bei einer bevorzugten Ausführungsform des Schlauchhebers schwenkbar und/oder schwimmend gelagert mit dem lasttragenden Element verbunden. Wenn der Schlauchheber in Betrieb ist, also der Hubschlauch gegenüber seiner auf Block gefahrenen kontrahierten Stellung gelängt ist, befindet sich die Halteeinrichtung mit ihren Komponenten, also vorzugsweise auch mit dem formstabilen Verriegelungsorgan deutlich oberhalb der Bedienvorrichtung und der Sauggreifvorrichtung und ist daher für eine Bedienperson störend. Durch die vorerwähnte schwenkbare oder schwimmende Lagerung des Verriegelungsorgans ist eine Beeinträchtigung der Beweglichkeit des Hubschlauchs nicht gegeben.In a preferred embodiment of the tube lifter, the dimensionally stable locking member is connected to the load-bearing element in a pivotable and / or floating manner. When the tube lifter is in operation, that is to say the lifting tube is elongated in relation to its contracted position in which it has moved to a block, the holding device is located with its Components, that is, preferably also with the dimensionally stable locking member, well above the operating device and the suction gripping device and is therefore annoying for an operator. The aforementioned pivotable or floating mounting of the locking member does not impair the mobility of the lifting tube.
Wie schon angesprochen kann es sich als vorteilhaft erweisen, wenn das lasttragende Element eine außerhalb des Hubschlauchs vorgesehene Anordnung aus vertikal erstreckten Gurten ist. Hierdurch stört die Halteeinrichtung die Bedienbarkeit und insbesondere Beweglichkeit des Hubschlauchs nicht. Beispielsweise können zwei, drei oder vier vertikal erstreckte Gurtabschnitte, die durch starre, halbstarre oder biegsame Ringabschnitte, vorzugsweise verschieblich miteinander verbunden sind, eine netzartige Tragstruktur bilden, die aber die Bedienbarkeit des Hubschlauchs nicht beeinträchtigt.As already mentioned, it can prove to be advantageous if the load-bearing element is an arrangement of vertically extending straps provided outside the lifting tube. As a result, the holding device does not interfere with the operability and, in particular, the mobility of the lifting tube. For example, two, three or four vertically extending belt sections, which are connected to one another by rigid, semi-rigid or flexible ring sections, preferably displaceably, form a net-like support structure which, however, does not impair the operability of the lifting tube.
Das lasttragendes Element der Halteeinrichtung des Schlauchhebers kann bei einer Ausführungsform an einem auch den Hubschlauch tragenden Kranarm, insbesondere an einem Laufelement eines Kranarms, gehalten sein oder lösbar aufgehängt sein.In one embodiment, the load-bearing element of the holding device of the tube lifter can be held or releasably suspended on a crane arm that also carries the lifting tube, in particular on a running element of a crane arm.
Wenn das lasttragendes Element aus einem biegeschlaffen Material gebildet ist, so lässt sich auf besonders einfache Weise eine Verbindung mit dem formstabilen Verriegelungsorgan herstellen, etwa dadurch, dass bei dem formstabilen Verriegelungsorgan Ösen bildende Öffnungen, insbesondere schlitzförmige Öffnungen, die auch an einer Seite randoffen ausgebildet sein können, vorgesehen werden. Es wäre aber auch denkbar und vorteilhaft, wenn zwischen dem lasttragenden Element und dem formstabilen Verriegelungsorgan punktuell wirkende Verbindungsmittel, wie Ringe, Schäkel oder dergleichen vorgesehen sind. Auch hierdurch lässt sich auf einfache Weise eine schwenkbare und/oder schwimmend gelagerte Anordnung des starren Verriegelungsorgans an dem lasttragenden Element der Halteeinrichtung erreichen.If the load-bearing element is made of a pliable material, a connection with the dimensionally stable locking element can be established in a particularly simple manner, for example by having openings in the dimensionally stable locking element that form eyelets, in particular slot-shaped openings, which are also open-edged on one side can be provided. But it would also be conceivable and advantageous if between the load-bearing Element and the dimensionally stable locking member acting at points connecting means such as rings, shackles or the like are provided. In this way, too, a pivotable and / or floating arrangement of the rigid locking member on the load-bearing element of the holding device can be achieved in a simple manner.
Nach einem weiteren Gedanken von besonderer Bedeutung wird vorgeschlagen, dass das Verriegelungsorgan durch ein elastisches Element beaufschlagt ist, welche das Verriegelungsorgan bezüglich dem Hubschlauch oder dem lasttragenden Element in Richtung auf eine Stellung vorspannt. Hierdurch kann zweierlei erreicht werden: zum einen ist eine definierte Stellung des Verriegelungsorgans im gelösten Zustand der Halteeinrichtung, also während des Betriebs des Schlauchhebers gegeben, so dass das Verriegelungsorgan nicht unkontrolliert herumschlägt. Zum anderen wird durch eine solche definierte Stellung im entriegelten Zustand die Ergreifbarkeit und damit die Handhabbarkeit der Halteeinrichtung für die Herbeiführung einer erneuten Fixierung des Schlauchhebers im zusammengefahrenen Zustand erleichtert, und die Bedienperson kann sich an zu wiederholende Betätigungsaktionen gewöhnen.According to a further idea of particular importance, it is proposed that the locking element be acted upon by an elastic element which pretensions the locking element towards a position with respect to the lifting tube or the load-bearing element. In this way, two things can be achieved: on the one hand, a defined position of the locking member is given in the released state of the holding device, that is, during operation of the tube lifter, so that the locking member does not swing around in an uncontrolled manner. On the other hand, such a defined position in the unlocked state makes it easier to grasp and thus the maneuverability of the holding device for bringing about a renewed fixation of the tube lifter in the closed state, and the operator can get used to repeated actuation actions.
Nach einer Ausführungsform der Erfindung erweist sich als vorteilhaft, wenn das Verriegelungsorgan U-bügelförmig ausgebildet und so anordenbar ist, dass es den Hubschlauch oder die Bedienvorrichtung in einer ungefähr horizontalen Ebene von außen umgreifen kann, wobei die zwei Kopplungsbereiche im Bereich der freien Enden der U-Form angeordnet sind. Bei dieser Ausbildung wird die Bedienperson das Verriegelungsorgan im Bereich des quer verlaufenden Schenkels zwischen den beiden die Kopplungsbereiche tragenden Schenkeln ergreifen. Es ist aber auch denkbar, dass das Verriegelungsorgan den Hubschlauch in einer ungefähr horizontalen Ebene von außen rahmenbildend umgibt. Hierdurch könnte eine Ausführungsform motiviert sein, die es gestattet, das Verriegelungsorgan auf der einen oder der gegenüberliegenden anderen Seite bei der Handhabung zu ergreifen.According to one embodiment of the invention, it proves to be advantageous if the locking element is designed in the shape of a U-bracket and can be arranged so that it can encompass the lifting tube or the operating device in an approximately horizontal plane from the outside, the two coupling areas in the area of the free ends of the U -Form are arranged. In this training, the operator is the locking member in the area of the transverse Grip leg between the two legs carrying the coupling areas. But it is also conceivable that the locking member surrounds the lifting tube in an approximately horizontal plane from the outside to form a frame. This could motivate an embodiment that allows the locking member to be grasped on one side or the opposite other side during handling.
Als ganz besonders vorteilhaft erweist es sich, wenn das Verriegelungsorgan in Bezug auf beide Haltepunkte gleichzeitig durch eine manuelle Einhandbetätigung wahlweise in eine Fixierverbindung (Verriegeln) und außer Fixierverbindung (Lösen) gebracht werden kann. Hierfür umfasst das Verriegelungsorgan einen manuellen Griffbereich, an dem es mit einer Hand der Bedienperson ergreifbar ist und insbesondere verschwenkt und/oder linear verstellt werden kann. Wenn das Verriegelungsorgan beispielsweise U-bügelförmig ausgebildet ist, dann bildet vorzugsweise die Querstrebe oder Scheitelstrebe der U-Form einen manuellen Griffbereich, den ein Benutzer bequem ergreifen und damit das Verriegelungsorgan mit nur einer Hand bedienen kann.It proves to be particularly advantageous if the locking member can be brought into a fixation connection (locking) and out of a fixation connection (loosening) at the same time by manual one-hand actuation with respect to both holding points. For this purpose, the locking member comprises a manual grip area, on which it can be gripped with one hand of the operator and in particular can be pivoted and / or adjusted linearly. If the locking member is designed, for example, in the shape of a U-bracket, then the cross strut or apex strut of the U-shape preferably forms a manual grip area that a user can comfortably grasp and thus operate the locking member with just one hand.
Im Hinblick auf eine einfache Bedienbarkeit erweist es sich als vorteilhaft, wenn die manuelle Einhandbetätigung eine Schwenkbetätigung des Verriegelungsorgans verbunden mit einer kurzen linearen Stellbewegung des Verriegelungsorgans ist. Die linearen Stellbewegung kann beispielsweise eine Zugbewegung oder eine Schiebebewegung sein, insbesondere jeweils ungefähr in einer horizontalen Ebene.With regard to ease of use, it has proven to be advantageous if the manual one-hand operation is a pivoting operation of the locking member combined with a short linear adjusting movement of the locking member. The linear adjusting movement can be, for example, a pulling movement or a sliding movement, in particular in each case approximately in a horizontal plane.
Nach einer weiteren Ausführungsform des erfindungsgemäßen Schlauchhebers kann vorgesehen sein, dass das Verriegelungsorgan beim Hochfahren des Hubschlauchs selbsttätig in die lösbare Fixierverbindung gelangt, wenn der Hubschlauch seinen verkürzten zusammengefahrenen Zustand erreicht, indem die beiden Kopplungsbereiche des Verriegelungsorgans je eine Zentrieröffnung für die Haltepunkte aufweisen, so dass die Haltepunkte beim Hochfahren automatisch und zwingend von der jeweiligen Zentrieröffnung erfasst und zwangsgeführt in eine die vertikale Richtung hintergreifende Fixierstellung bei dem jeweiligen Kopplungsbereich gelangen. Dies erspart dann sogar eine manuelle Bedienung des Verriegelungsorgans. Gleichwohl kann das Verriegelungsorgan zum Zwecke des Lösens der Fixierstellung manuell betätigbar sein. Für die Realisierung der vorstehenden automatischen Fixierung beim Hochfahren des Schlauchhebers erweist es sich als vorteilhaft, wenn das Verriegelungsorgan je eine Kulissenführungsbahn für jeden Haltepunkt aufweist, welche dann zu den Kopplungsbereichen führen um einen die Fixierstellung bewirkenden Hintergriff mit den Haltepunkten auszubilden.According to a further embodiment of the tube lifter according to the invention, it can be provided that the locking element automatically enters the detachable fixing connection when the lifting tube is raised when the lifting tube reaches its shortened, collapsed state, in that the two coupling areas of the locking element each have a centering opening for the holding points, so that the stopping points are automatically and compulsorily detected by the respective centering opening when moving up and are positively guided into a fixing position that engages behind the vertical direction in the respective coupling area. This then even saves manual operation of the locking member. Nevertheless, the locking member can be actuated manually for the purpose of releasing the fixing position. For the implementation of the above automatic fixation when the tube lifter is raised, it proves to be advantageous if the locking member has a link guide track for each stopping point, which then lead to the coupling areas in order to form an engagement behind the stopping points that causes the fixation position.
Anstelle der Ausbildung einer mechanischen formschlüssigen Halteverbindung zwischen den Kopplungsbereichen des Verriegelungsorgans und den zwei Haltepunkte kann auch vorgesehen sein, dass die zwei Kopplungsbereiche des Verriegelungsorgans und die Haltepunkte so ausgebildet sind, dass die lösbare Halteverbindung eine magnetische oder elektromagnetische Halteverbindung ist. Solchenfalls umfassen die Haltepunkte und Kopplungsbereiche magnetische oder magnetisierungsbare Materialien.Instead of forming a mechanical, positive-locking holding connection between the coupling areas of the locking member and the two holding points, it can also be provided that the two coupling regions of the locking member and the holding points are designed so that the releasable holding connection is a magnetic or electromagnetic holding connection. In such cases, the holding points and coupling areas comprise magnetic or magnetizable materials.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Patentansprüchen und aus der zeichnerischen Darstellung und nachfolgenden Beschreibung bevorzugter Ausführungsformen der Erfindung. In der Zeichnung zeigt:
- Figur 1
- eine perspektivische und teilweise Ansicht eines erfindungsgemäßen Schlauchhebers im kontrahierten und gegen Herabfallen fixierten Zustand;
Figur 2- eine Seitenansicht des Schlauchhebers nach
Figur 1 ; - Figur 3
- eine weitere Seitenansicht des Schlauchhebers gesehen in Richtung des Pfeils III in
;Figur 2 Figur 4- eine
Figur 1 entsprechende Ansicht einer weiteren Ausführungsform eines erfindungsgemäßen Schlauchhebers; - Figur 5
- eine perspektivische und teilweise Ansicht des erfindungsgemäßen Schlauchhebers im gelösten nicht fixierten Zustand;
Figur 6- eine Seitenansicht des Schlauchhebers nach
Figur 5 ; - Figur 7
- eine schematische Darstellung einer weiteren Ausführungsform eines erfindungsgemäßen Schlauchhebers mit automatischer Verriegelungsfunktion; und
Figur 8- eine perspektivische Gesamtansicht des erfindungsgemäßen Schlauchhebers.
- Figure 1
- a perspective and partial view of a tube lifter according to the invention in the contracted state and fixed against falling;
- Figure 2
- a side view of the tube lifter according to
Figure 1 ; - Figure 3
- a further side view of the tube lifter seen in the direction of arrow III in FIG
Figure 2 ; - Figure 4
- one
Figure 1 corresponding view of a further embodiment of a tube lifter according to the invention; - Figure 5
- a perspective and partial view of the tube lifter according to the invention in the released, non-fixed state;
- Figure 6
- a side view of the tube lifter according to
Figure 5 ; - Figure 7
- a schematic representation of a further embodiment of a tube lifter according to the invention with an automatic locking function; and
- Figure 8
- a perspective overall view of the tube lifter according to the invention.
Die
Die Bedienvorrichtung 6 umfasst in an sich bekannter Weise eine Ventileinrichtung sowie einen Steuermechanismus und ein manuell betätigbares Bedienelement 16, welches ergonomisch an einem manuell ergreifbaren Handgriff 18 der Bedienvorrichtung 6 vorgesehen ist. Durch Betätigen des Bedienelements 16 am Handgriff 18 lassen sich in erwünschter und an sich bekannter Weise Strömungsverbindungen zwischen einer nicht dargestellten unterdruckerzeugenden Einrichtung, dem Schlauchinnenraum 12 und der Sauggreifvorrichtung 8, welche auf einen anzusaugenden, anzuhebenden und zu verlagernden Gegenstand aufsetzbar oder ansetzbar ist, herstellen.The operating
Typischerweise sind Schlauchheber der vorstehend genannten Art entweder stationär aufgehängt oder an Streben oder Kranarmen verfahrbar vorgesehen. Wenn der Schlauchheber außer Betrieb genommen werden soll oder während Handhabungspausen wird mittels der Bedienvorrichtung 6 im Schlauchinnenraum 12 des Hubschlauchs 4 ein derartiger Unterdruck angelegt, dass der Schlauchheber 2 unter Kontraktion des Hubschlauchs 4 nach oben in seine verkürzte und typischerweise auf Anschlag zusammengefahrene kontrahierte Konfiguration gefahren wird. Um ein Herabsinken oder gar Herabfallen bei ausgeschalteter Unterdruckquelle zu verhindern, wird der Schlauchheber 2 in diesem Zustand mittels einer Halteeinrichtung 20 fixiert. Diese Halteeinrichtung 20 ist erfindungsgemäß verbessert worden. Sie umfasst eine ein Tragnetz bildende Anordnung aus vorliegend insbesondere vier im Wesentlichen vertikal erstreckten Gurtabschnitten 22, die unten und insbesondere auch mittig oder oben beispielhaft durch einen vorzugsweise flexiblen, ringförmig geschlossenen Gurtabschnitt 23 teilweise fest und teilweise verschieblich verbunden sind und ein lastragendes Element 24 der Halteeinrichtung 20 bilden. Weiter umfasst die Halteeinrichtung 20 zwei einander horizontal und diametral gegenüberliegende Haltepunkte 26 beispielhaft in Form von vorstehenden Haltebolzen 28, die bei dieser Ausführungsform ein flanschförmig erweitertes freies Ende 30 haben.Typically, tube lifters of the type mentioned above are either suspended in a stationary manner or provided so that they can be moved on struts or crane arms. When the tube lifter is to be taken out of service or during breaks in handling, the operating
Die Halteeinrichtung 20 umfasst weiter ein von einem einzigen Bauteil gebildetes formstabiles Verriegelungsorgan 32, welches hier vorzugsweise U-bügelförmig ausgebildet ist. Dieses Verriegelungsorgan 32 ist mit zwei einander diametral gegenüberliegenden Gurtabschnitten 22 beispielhaft lösbar verbunden, indem es eine ösenbildende beispielhaft langgestreckte schlitzförmige Öffnung 34 aufweist, in welche der betreffende Gurtabschnitt 22 eingreift oder seinerseits mit einem schlaufenförmigen Ende eingehängt ist. Auf diese Weise ist das bügelförmig ausgebildete Verriegelungsorgan 32 schwenkbar und gewissermaßen schwimmend gelagert an den Gurtabschnitten 22 gehalten. Eine anders ausgebildete Verbindung des Verriegelungsorgans 32 mit den beiden Gurtabschnitten 22 wäre ebenfalls denkbar, solange das Verriegelungsorgan 32 schwenkbar und schwimmend an den Gurtabschnitten angeordnet ist.The holding
Das Verriegelungsorgan 32 weist weiter zwei Kopplungsbereiche 36, 38 auf, die einander diametral gegenüberliegend entsprechend der Anordnung der Haltepunkte 26 vorgesehen sind. Die Kopplungsbereiche 36, 38 sind im beispielhaft dargestellten Fall hakenförmig ausgebildet. Eine Ebene dieser Hakenform ist jeweils vertikal orientiert, so dass der jeweilige Kopplungsbereich 36, 38 eine bezüglich des Hubschlauchs 4 radiale Durchgriffsöffnung 40 für die Haltebolzen 28 bildet (In
Um die Halteeinrichtung 20 ausgehend von der in
Die Ausführungsform gemäß
Bei einer weiteren jedoch nicht im Einzelnen dargestellten Ausführungsform wäre es denkbar, dass anstelle oder zusätzlich zu einer mechanischen Hintergriffsverbindung zwischen den Kopplungsbereichen und den Haltepunkten eine magnetische oder elektromagnetische Kopplung oder Fixierung vorgesehen wird. Solchenfalls wären im Bereich der Haltepunkte 26 und der Kopplungsbereiche 36, 38 magnetische oder magnetisierbare Materialien vorgesehen.In a further embodiment, but not shown in detail, it would be conceivable that instead of or in addition to a mechanical engagement connection between the coupling areas and the holding points, a magnetic or electromagnetic coupling or fixing is provided. In such a case, magnetic or magnetizable materials would be provided in the area of the holding points 26 and the
In
Claims (15)
und mit einer Bedienvorrichtung (6), die einen Sauganschluss (14) zur Strömungsverbindung mit der Sauggreifvorrichtung (8), einen Hubschlauchanschluss (10) zur Strömungsverbindung mit dem Schlauchinnenraum (12) des Hubschlauchs (4) sowie eine Ventileinrichtung zur Steuerung von Strömungsverbindungen und ein manuell betätigbares Bedienelement (16) aufweist, und mit einer Halteeinrichtung (20) zum Fixieren der Bedienvorrichtung (6) samt Sauggreifvorrichtung (8) und des Hubschlauchs (4) im verkürzten zusammengefahrenen Zustand des Hubschlauchs zur Verhinderung eines ungewollten Herabsinkens oder Herabfallens, wobei die Halteeinrichtung (20) zwei bezüglich des Hubschlauchs (4) und der Bedienvorrichtung (6) einander gegenüberliegende Haltepunkte (26) aufweist, an denen ein lasttragendes Element (24) der Halteeinrichtung (20) zum Fixieren der Bedienvorrichtung (6) samt Sauggreifvorrichtung (8) und des Hubschlauchs (4) angreifen kann,
dadurch gekennzeichnet, dass ein formstabiles Verriegelungsorgan (32) vorgesehen ist, das mit dem lasttragenden Element (24) in belastbarer Verbindung steht und das so ausgebildet und anordenbar ist, dass es mit beiden Haltepunkten (26) zugleich eine lasttragende, lösbare Fixierverbindung ausbilden kann, und dass das Verriegelungsorgan (32) hierfür zwei Kopplungsbereiche (36, 38) aufweist, die derart angeordnet sind, dass sie mit den einander gegenüberliegenden Haltepunkten (26) die lösbare Fixierverbindung ausbilden können.Tube lifter (2) with a lifting tube (4), which has a tube interior (12) and can be shortened by applying negative pressure to the tube interior (12), and with a suction gripping device (8) arranged at one end of the lifting tube (4), which through the hose interior (12) can be supplied with negative pressure for sucking in and lifting an object,
and with an operating device (6) which has a suction connection (14) for flow connection with the suction gripping device (8), a lifting tube connection (10) for flow connection with the tube interior (12) of the lifting tube (4) and a valve device for controlling flow connections and a has manually operable operating element (16), and with a holding device (20) for fixing the operating device (6) together with the suction gripping device (8) and the lifting tube (4) in the shortened, contracted state of the lifting tube to prevent unintentional lowering or falling, the holding device (20) has two holding points (26) opposite one another with respect to the lifting tube (4) and the operating device (6), at which a load-bearing element (24) of the holding device (20) for fixing the operating device (6) together with the suction gripping device (8) and the lifting tube (4) can attack,
characterized in that a dimensionally stable Locking member (32) is provided which is in a load-bearing connection with the load-bearing element (24) and which is designed and arranged so that it can simultaneously form a load-bearing, releasable fixing connection with both holding points (26), and that the locking member (32 ) has two coupling areas (36, 38) for this purpose, which are arranged in such a way that they can form the detachable fixing connection with the opposing holding points (26).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020111129.0A DE102020111129B4 (en) | 2020-04-23 | 2020-04-23 | tube lifter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3904269A1 true EP3904269A1 (en) | 2021-11-03 |
EP3904269B1 EP3904269B1 (en) | 2023-01-04 |
Family
ID=75625470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21169627.3A Active EP3904269B1 (en) | 2020-04-23 | 2021-04-21 | Hose lifter |
Country Status (2)
Country | Link |
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EP (1) | EP3904269B1 (en) |
DE (1) | DE102020111129B4 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2223881A1 (en) * | 2009-02-26 | 2010-09-01 | Albert Fezer Maschinenfabrik GmbH | Vacuum hoisting device and method for operating a vacuum hoisting device |
DE202018100403U1 (en) * | 2018-01-24 | 2019-04-25 | J. Schmalz Gmbh | Operating device for a tube lifter and tube lifter |
EP3539916A1 (en) * | 2018-03-12 | 2019-09-18 | J. Schmalz GmbH | Control device for a hose lifter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH526461A (en) | 1971-02-10 | 1972-08-15 | Gis Ag | Vacuum lifting device |
DE4106367A1 (en) | 1991-02-28 | 1992-09-03 | Kht Kommissionier & Handhabung | Parcel lifting device - has suction head which is mounted on lower end of flexible bellows |
-
2020
- 2020-04-23 DE DE102020111129.0A patent/DE102020111129B4/en active Active
-
2021
- 2021-04-21 EP EP21169627.3A patent/EP3904269B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2223881A1 (en) * | 2009-02-26 | 2010-09-01 | Albert Fezer Maschinenfabrik GmbH | Vacuum hoisting device and method for operating a vacuum hoisting device |
DE202018100403U1 (en) * | 2018-01-24 | 2019-04-25 | J. Schmalz Gmbh | Operating device for a tube lifter and tube lifter |
EP3539916A1 (en) * | 2018-03-12 | 2019-09-18 | J. Schmalz GmbH | Control device for a hose lifter |
Also Published As
Publication number | Publication date |
---|---|
DE102020111129A1 (en) | 2021-10-28 |
EP3904269B1 (en) | 2023-01-04 |
DE102020111129B4 (en) | 2022-02-24 |
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