EP3904269B1 - Hose lifter - Google Patents
Hose lifter Download PDFInfo
- Publication number
- EP3904269B1 EP3904269B1 EP21169627.3A EP21169627A EP3904269B1 EP 3904269 B1 EP3904269 B1 EP 3904269B1 EP 21169627 A EP21169627 A EP 21169627A EP 3904269 B1 EP3904269 B1 EP 3904269B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- locking member
- lifter
- holding
- lifting
- 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.)
- Active
Links
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- 238000010168 coupling process Methods 0.000 claims description 35
- 238000005859 coupling reaction Methods 0.000 claims description 35
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241001295925 Gegenes Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000284 resting effect 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
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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
- B66C1/0293—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 which comprises a lifting tube which has a tube interior and can be shortened by subjecting the tube interior to negative pressure, and having a suction gripping device which is arranged at one end of the lifting tube and which can be supplied with negative pressure through the tube interior for sucking in and lifting an object and with an operating device, which has a suction connection for the flow connection with the suction gripping device, a lifting tube connection for the flow connection with the inner space of the lifting tube, as well as a valve device for controlling flow connections and a manually operable operating element, and with a holding device for fixing the operating device together Suction gripping device and the lifting tube in the shortened, retracted state of the lifting tube to prevent it from falling or lowering unintentionally, the holding device having two opposite holding points with respect to the lifting tube and the operating device, on which a load-bearing element of the holding device for fixing the operating device together with the suction gripping device and the lifting tube act can.
- Such tube lifters are often arranged on crane arms with a longitudinally displaceable suspension and can then, if necessary, be gripped by an operator and used to suck up, lift and move any object.
- the lifting tube is in a foreshortened condition and is typically contracted to its minimum longitudinal extent, referred to as "collapsed on a block". 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 down. 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 acts on the operating device or the suction gripping device.
- a holding device for this purpose is known in the prior art, which comprises load-bearing elements in the form of belts which extend downwards 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 hold the tube lifter in the contracted position
- load-bearing elements in the form of belts which extend downwards 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 hold the tube lifter in the contracted position
- an operator must use one hand take one of the eyelets attached to the ends of the belt 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 change hands several times.
- a tube lifter according to the preamble of claim 1 is from DE 20 2018 100403 U1 famous.
- the present invention is based on the object of simplifying the handling of the tube lifter during start-up and shut-down and in particular of shortening the set-up times for this. Irrespective of this, however, the operational reliability should not be reduced, but rather increased.
- this object is achieved according to the invention in that there is a dimensionally stable locking element which is in load-bearing connection with the load-bearing element and which is designed and can be arranged in such a way that it can form a load-bearing fixing connection with both holding points at the same time, and in that the single locking member has two coupling areas for this purpose, which are arranged in such a way that they can form the releasable fixing connection with the holding points located opposite one another.
- the holding device in particular its load-bearing element, can comprise a belt section or belt sections, on which or on which the dimensionally stable and preferably rigid locking element is in turn held, which will be explained below.
- the fixing of the tube lifter is preferably effected by or by means of the single locking element 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 releasable fixing connection is produced in the tube lifter by means of the locking element by hooking in, hooking behind or reaching under the holding points.
- the two coupling areas are hook-shaped, with an open engagement area of the hook being arranged on an underside of the locking element.
- the locking element can thus be placed on the breakpoints, in particular due to the force of gravity, and brought into the fixing position for both breakpoints simultaneously by means of a short adjusting movement.
- the holding points could be formed by any areas that can be grasped from behind or below 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 bolts or pins projecting outwards, in particular with a free end with an enlarged diameter.
- the optionally provided diameter-enlarged free end serves to prevent loss, ie to prevent the locking member from slipping over the free end of the bolt or pin.
- this additional feature is unnecessary if the locking element is designed in such a way or the distance between the two coupling areas of the locking element is chosen so close together that the coupling areas cannot slide over the extent of the bolts or pins.
- the dimensionally stable locking element is pivotably and/or floatingly connected to the load-bearing element.
- the holding device is located with its Components, ie preferably also with the dimensionally stable locking member, clearly above the operating device and the suction gripping device and is therefore annoying for an operator. Due to the above-mentioned pivotable or floating mounting of the locking member, there is no impairment of the mobility of the lifting tube.
- the load-bearing element is an arrangement of vertically extending belts provided outside the lifting tube.
- the holding device does not interfere with the operability and in particular with the mobility of the lifting tube.
- two, three or four vertically extending belt sections which are preferably displaceably connected to one another by rigid, semi-rigid or flexible ring sections, form a net-like supporting structure which, however, does not impair the operability of the lifting tube.
- the load-bearing element of the holding device of the tube lifter can be held or detachably suspended on a crane arm that also carries the lifting tube, in particular on a running element of a crane arm.
- a connection to the dimensionally stable locking element can be produced in a particularly simple manner, for example by the fact that the dimensionally stable locking element has openings forming 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 selectively acting connection means such as rings, shackles or the like are provided. This also makes it easy to achieve a pivotable and/or floating arrangement of the rigid locking member on the load-bearing element of the holding device.
- the locking member be acted upon by an elastic element which prestresses the locking member towards a position with respect to the lifting tube or the load-bearing element.
- an elastic element which prestresses the locking member towards a position with respect to the lifting tube or the load-bearing element.
- the locking element is U-shaped and can be arranged in such a way that it can grip the lifting tube or the operating device from the outside in an approximately horizontal plane, with the two coupling areas in the area of the free ends of the U -Form are arranged.
- the operator becomes the locking member in the region of the transverse Take leg between the two legs supporting the coupling areas.
- the locking element surrounds the lifting tube in an approximately horizontal plane from the outside, forming a frame. This could motivate an embodiment that allows the locking member to be gripped on one side or the opposite side during handling.
- the locking member can be brought into a fixed connection (locking) and out of a fixed connection (release) at the same time with respect to both breakpoints by manual operation with one hand.
- the locking element comprises a manual grip area, on which it can be grasped with one hand of the operator and, in particular, can be pivoted and/or linearly adjusted. If the locking element is U-shaped, for example, then the transverse strut or apex strut of the U-shape preferably forms a manual grip area that a user can comfortably grip and thus operate the locking element with just one hand.
- the manual one-handed actuation is a pivoting actuation of the locking member combined with a short linear actuating movement of the locking member.
- the linear adjustment movement can be, for example, a pulling movement or a pushing movement, in particular approximately in a horizontal plane.
- the locking element automatically moves into the detachable fixing connection when the lifting tube is raised when the lifting tube reaches its shortened, retracted state, in that the two coupling areas of the locking element each have a centering opening for the holding points, so that the breakpoints are automatically and compulsorily detected by the respective centering opening when it is raised and forced into a fixing position that engages behind the vertical direction in the respective coupling area.
- the locking element can be actuated manually for the purpose of releasing the fixing position.
- the locking member has a connecting link guideway for each breakpoint, which then lead to the coupling areas in order to form a grip behind the breakpoints that causes the fixing position.
- the two coupling areas of the locking element and the holding points are formed in such a way that the detachable 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 region is shown, as well as an operating device 6 and a suction gripping device 8 which is connected vertically below the operating device 6.
- the operating device 6 comprises a lifting tube connection 10 for attachment to the lifting tube 4 and for establishing a flow connection with a tube interior 12 of the lifting tube 4.
- the operating device also includes 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 and a control mechanism and a manually operable operating element 16 which is ergonomically provided on a handle 18 of the operating device 6 which can be gripped manually.
- a control element 16 By actuating the control element 16 on the handle 18, flow connections can be established in a desired and known manner between a device that generates a vacuum (not shown), the hose interior 12 and the suction gripping device 8, which can be placed or attached to an object to be sucked up, lifted and moved.
- tube lifters of the type mentioned above are either suspended in a stationary manner or are provided such that they can be moved on struts or crane arms. If the tube lifter is to be taken out of service or during breaks in handling, such a negative pressure is applied by means of the operating device 6 in the tube interior 12 of the lifting tube 4 that the tube lifter 2 moves upwards under contraction of the lifting tube 4 is driven into its shortened and typically retracted to the stop contracted configuration. In order to prevent it from sinking or even falling when the vacuum source is switched off, 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.
- a support net consisting in particular of four essentially vertically extending belt sections 22, which are connected at the bottom and in particular also in the middle or at the top, for example by a preferably flexible belt section 23 that is closed in the form of a ring, partly fixed and partly movable, and a load-bearing element 24 of the holding device form 20
- the holding device 20 comprises two holding points 26 lying horizontally and diametrically opposite one another, for example in the form of projecting holding bolts 28 which, in this embodiment, have a free end 30 which is widened in the form of a flange.
- the holding device 20 further comprises a dimensionally stable locking member 32 formed by a single component, which is preferably U-shaped here.
- This locking element 32 is detachably connected to two diametrically opposite belt sections 22 by having an elongate slot-shaped opening 34 forming an eyelet, in which the respective belt section 22 engages or is in turn hooked with a loop-shaped end.
- the bracket-shaped locking element 32 can be pivoted and is 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 arranged pivotably 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. One level of this hook shape is oriented vertically in each case, so that the respective coupling area 36, 38 forms a passage opening 40 for the retaining bolts 28 that is radial with respect to the lifting tube 4 (In figure 5 best seen in the unfixed state).
- This reach-through opening 40 is not closed due to the hook shape, but opens out via an inlet opening 42 to the outside, so that the respective holding point 26 designed as a holding bolt 28 can be reached via this inlet opening 42 in the in the Figures 1 to 3 shown position can reach what will be described below.
- the locking element 32 is additionally held by means of an elastically expandable element 44 .
- This can be a rubber band or any elastic or elasticized element 44 .
- it is arranged between a strap 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 strap sections 22 to engage.
- a force giving away the locking member 32 is generated on the locking member 32 and introduced into it.
- This force causes the locking member 32 in not locked state, i.e. not interacting with the breakpoints 26, which in figures 5 and 6 is shown in the in figures 5 and 6 shown position is pivoted in contact with the lifting tube 4.
- the locking element 32 is then arranged in a defined manner on the lifting tube 4 and does not swing around in an uncontrolled manner.
- the lifting tube 4 is controlled via the operating device 6 to contract, ie the tube lifter 2 to move upwards.
- the operator grasps a manual grip area 48 of the locking member 32 with one hand and pivots the floating locking member 32 in the direction of arrow 50 in figure 5 downward.
- the operator can exert a relatively short linear pushing and/or pulling movement on the locking element 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 bow-shaped locking member 32 is then stably stabilized in the horizontal position.
- the locking element 32 in such a way that, when the locking element 32 is released, the elastically stretchable element 44 moves the locking element 32 starting from the in Figures 1 to 4 shown horizontal arrangement can pivot back up, so in the direction of in figures 5 and 6 indicated position, but while maintaining the form-fitting holding connection with the holding points 26.
- additional security would then be realized by the interlocking of the hook-shaped coupling areas 36, 38 in order to prevent the holding points 26 in any way from their fixing position with the coupling areas 36, 38 can slide out.
- the opening 34 which is in the form of a slot here, for example, and on which the respective belt section 22 is hooked, to be intentionally offset somewhat horizontally with respect to the center point of the reach-through opening 40, so that such a tilting of the locking element 32 is automatically prevented by the load hooked there, i.e is realized due to gravity when the load of the operating device 6 together with the suction gripping devices 8 loads the locking element 32 .
- this is not necessary in the present case, since the laterally protruding holding points 26 are stably accommodated in the reach-through opening 40 of the coupling regions 36, 38, which is limited in the shape of a hook, 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 an extended free end. This is also not necessary, since the distance between the coupling areas 36, 38 of the locking element 32 is dimensioned in such a way that the locking element 32 can engage around the operating device 6 and the lifting tube 4, but not over the free end of a retaining bolt 28 can slide away.
- FIG. 12 schematically illustrates a further embodiment in which the locking member 32 has a link guide track 52 on each side.
- the holding point 26 reaches this link guideway 52 of the locking member 32 and is then forcibly guided and automatically brought into the final fixing gripping position at the end of the linkway 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 necessarily grasped by a respective centering opening 54 when they are raised and are forcibly guided into a fixing position that engages behind in the vertical direction in the respective coupling area 36, 38.
- FIG 8 a perspective overall view of the tube lifter 2 according to the invention is shown.
- the belt sections 22 are preferably releasably connected at the top to an exemplary metal flange-shaped retaining plate 60 .
- the holding plate 60 lies flat on a connecting flange 62 of the lifting tube 4 and is held by it.
- the connecting flange 62 of the lifting tube 4 extends with a loadable connecting tubing 64 through an opening in the holding plate 60 and can be connected to a tubing holding the lifting tube and carrying a vacuum.
- this is only an example.
- the lifting tube 4 can also be hung up in any other way, in which case the connection flange 62 of the lifting tube 4 can then have, for example, hooks or eyes for attachment to a crane arm or crane truck.
- a vacuum connection of the lifting tube 4 is then preferably implemented via flexible, flexible lines. It is also conceivable that the holding device 20 itself can be releasably fastened directly to a support arm, crane arm or crane truck and not resting on the connecting flange 62 of the lifting tube 4 as shown.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
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 which comprises a lifting tube which has a tube interior and can be shortened by subjecting the tube interior to negative pressure, and having a suction gripping device which is arranged at one end of the lifting tube and which can be supplied with negative pressure through the tube interior for sucking in and lifting an object and with an operating device, which has a suction connection for the flow connection with the suction gripping device, a lifting tube connection for the flow connection with the inner space of the lifting tube, as well as a valve device for controlling flow connections and a manually operable operating element, and with a holding device for fixing the operating device together Suction gripping device and the lifting tube in the shortened, retracted state of the lifting tube to prevent it from falling or lowering unintentionally, the holding device having two opposite holding points with respect to the lifting tube and the operating device, on which a load-bearing element of the holding device for fixing the operating device together with the suction gripping device and the lifting tube act 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. Ein Schlauchheber nach dem Oberbegriff des Anspruchs 1 ist aus dem
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.Proceeding from this, the present invention is based on the object of simplifying the handling of the tube lifter during start-up and shut-down and in particular of shortening the set-up times for this. Irrespective of this, however, the operational reliability 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.Starting from a tube lifter of the type mentioned, this object is achieved according to the invention in that there is a dimensionally stable locking element which is in load-bearing connection with the load-bearing element and which is designed and can be arranged in such a way that it can form a load-bearing fixing connection with both holding points at the same time, and in that the single locking member has two coupling areas for this purpose, which are arranged in such a way that they can form the releasable fixing connection with the holding points located opposite one another.
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 to provide a dimensionally stable and preferably rigid locking element 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, which is time-consuming take 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 element is mentioned above, this does not exclude a certain flexibility, but what is meant by this is dimensional stability that allows the locking element to be brought into a fixing position with the breakpoints for both breakpoints at the same time; the locking element 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 or on which the dimensionally stable and preferably rigid locking element is in turn held, which will be explained below. The fixing of the tube lifter is preferably effected by or by means of the single locking element 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 releasable fixing connection is produced in the tube lifter by means of the locking element by hooking in, hooking behind 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 hook-shaped, with an open engagement area of the hook being arranged on an underside of the locking element. The locking element can thus be placed on the breakpoints, in particular due to the force of gravity, and brought into the fixing position for both breakpoints simultaneously 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.In principle, the holding points could be formed by any areas that can be grasped from behind or below 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 bolts or pins projecting outwards, in particular with a free end with an enlarged diameter. As a result, a fixing connection can be produced in a simple manner. The optionally provided diameter-enlarged free end serves to prevent loss, ie to prevent the locking member from slipping over the free end of the bolt or pin. However, this additional feature is unnecessary if the locking element is designed in such a way or the distance between the two coupling areas of the locking element is chosen so close together 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 element is pivotably and/or floatingly connected to the load-bearing element. When the tube lifter is in operation, ie the lifting tube is lengthened in relation to its contracted position when it is driven to a block, the holding device is located with its Components, ie preferably also with the dimensionally stable locking member, clearly above the operating device and the suction gripping device and is therefore annoying for an operator. Due to the above-mentioned pivotable or floating mounting of the locking member, there is no impairment of 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 belts provided outside the lifting tube. As a result, the holding device does not interfere with the operability and in particular with the mobility of the lifting tube. For example, two, three or four vertically extending belt sections, which are preferably displaceably connected to one another by rigid, semi-rigid or flexible ring sections, form a net-like supporting 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 detachably 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 to the dimensionally stable locking element can be produced in a particularly simple manner, for example by the fact that the dimensionally stable locking element has openings forming 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 selectively acting connection means such as rings, shackles or the like are provided. This also makes it easy to achieve a pivotable and/or floating arrangement of the rigid locking member on the load-bearing element of the holding device.
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 member be acted upon by an elastic element which prestresses the locking member 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, there is a defined position of the locking element in the released state of the holding device, ie during operation of the tube lifter, so that the locking element 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 handling of the holding device for bringing about a renewed fixing 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 is advantageous if the locking element is U-shaped and can be arranged in such a way that it can grip the lifting tube or the operating device from the outside in an approximately horizontal plane, with the two coupling areas in the area of the free ends of the U -Form are arranged. With this design, the operator becomes the locking member in the region of the transverse Take leg between the two legs supporting the coupling areas. However, it is also conceivable that the locking element surrounds the lifting tube in an approximately horizontal plane from the outside, forming a frame. This could motivate an embodiment that allows the locking member to be gripped on one side or the opposite 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 fixed connection (locking) and out of a fixed connection (release) at the same time with respect to both breakpoints by manual operation with one hand. For this purpose, the locking element comprises a manual grip area, on which it can be grasped with one hand of the operator and, in particular, can be pivoted and/or linearly adjusted. If the locking element is U-shaped, for example, then the transverse strut or apex strut of the U-shape preferably forms a manual grip area that a user can comfortably grip and thus operate the locking element 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-handed actuation is a pivoting actuation of the locking member combined with a short linear actuating movement of the locking member. The linear adjustment movement can be, for example, a pulling movement or a pushing movement, in particular 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 moves into the detachable fixing connection when the lifting tube is raised when the lifting tube reaches its shortened, retracted state, in that the two coupling areas of the locking element each have a centering opening for the holding points, so that the breakpoints are automatically and compulsorily detected by the respective centering opening when it is raised and forced into a fixing position that engages behind the vertical direction in the respective coupling area. This then even saves a manual operation of the locking member. Nevertheless, the locking element can be actuated manually for the purpose of releasing the fixing position. For the realization of the above automatic fixation when the tube lifter is raised, it proves to be advantageous if the locking member has a connecting link guideway for each breakpoint, which then lead to the coupling areas in order to form a grip behind the breakpoints that causes the fixing 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 form-fitting holding connection between the coupling areas of the locking element and the two holding points, it can also be provided that the two coupling areas of the locking element and the holding points are formed in such a way that the detachable holding connection is a magnetic or electromagnetic holding connection. In such a case, 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 and fixed against falling state;
- figure 2
- a side view of the tube lifter
figure 1 ; - figure 3
- another side view of the tube lifter seen in the direction of arrow III in
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
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 are provided such that they can be moved on struts or crane arms. If the tube lifter is to be taken out of service or during breaks in handling, such a negative pressure is applied by means of the
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, however not shown in detail, it would be conceivable for a magnetic or electromagnetic coupling or fixation to be provided instead of or in addition to a mechanical engagement connection between the coupling regions and the holding points. In such a case, magnetic or magnetizable materials would be provided in the area of the holding points 26 and the
In
Claims (15)
- Hose lifter (2) comprising a lifting hose (4) which has a hose interior (12) and can be shortened by applying negative pressure to the hose interior (12), and comprising a suction gripping device (8) which is arranged on one end of the lifting hose (4) and can be supplied with negative pressure through the hose interior (12) in order to suction and lift an object,and comprising an operating device (6) which has a suction connection (14) for flow connection with the suction gripping device (8), a lifting hose connection (10) for flow connection with the hose interior (12) of the lifting hose (4), and a valve device for controlling flow connections and a manually operable operating element (16), characterized by a holding device (20) for fixing the operating device (6) together with the suction gripping device (8) and the lifting hose (4) in the shortened collapsed state of the lifting hose in order to prevent unwanted falling, the holding device (20) having two holding points (26) which are opposite one another with respect to the lifting hose (4) and the operating device (6) and on which a load-bearing element (24) of the holding device (20) can act in order to fix the operating device (6) together with the suction gripping device (8) and the lifting hose (4),a dimensionally stable locking member (32) being provided which is in loadable connection with the load-bearing element (24) and which is designed and arrangeable in such a way that it can form a load-bearing, releasable fixing connection with both holding points (26) at the same time, and in that the locking member (32) has two coupling regions (36, 38) for this purpose, which are arranged such that they can form the releasable fixing connection with the mutually opposite holding points (26).
- Hose lifter (2) according to claim 1, characterized in that the two coupling regions (36, 38) of the locking member (32) and the two holding points (26, 28) are designed such that the releasable fixing connection is a mechanical form-fitting holding connection.
- Hose lifter (2) according to claim 1 or claim 2, characterized in that the two coupling regions (36, 38) are hook-shaped, an open engagement region of the hook being arranged on a lower face of the locking member (32) .
- Hose lifter (2) according to any of claims 1, 2 or 3, characterized in that the two holding points (26) are formed by outwardly projecting bolts (28) or pins, in particular having a free end (30) of increased diameter.
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the locking member (32) is pivotally and/or floatingly mounted with the load-bearing element (24).
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the load-bearing element (24) is an arrangement of vertically extending straps (22) provided outside the lifting hose (4) .
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the load-bearing element (24) is held on a crane arm which also supports the lifting hose (4), in particular on a running element of a crane arm.
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the locking member (32) is acted on by a resilient element (44) which loads the locking member (32) in the direction of a position relative to the lifting hose (4) or the load-bearing element (24).
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the locking member (32) is U-shaped and can be arranged such that it can surround the lifting hose (4) or the operating device (6) from the outside in an approximately horizontal plane, the two coupling regions (36, 38) being arranged in the region of the free ends of the U-shape.
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the locking member (32) surrounds the lifting hose (4) in an approximately horizontal plane from the outside in a frame-forming manner.
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the locking member (32) can be selectively brought into a fixing connection (locking) and out of the fixing connection (release) in relation to both holding points (26) by manual actuation.
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the manual actuation is a pivot actuation of the locking member (32) connected to a short linear actuating movement of the locking member (32). (Pulling movement, sliding movement)
- Hose lifter (2) according to one or more of the preceding claims, characterized in that when the lifting hose (4) is started up, the locking member (32) automatically arrives at the releasable fixing connection when the lifting hose (4) reaches its shortened collapsed state, in that the two coupling regions (36, 38) of the locking member (32) each have a centering opening (54) for the holding points (26), and therefore the holding points (26) are automatically and necessarily detected by the relevant centering opening (44) during start-up and are positively guided into a fixing position which engages behind the vertical direction in the relevant coupling region (36, 38).
- Hose lifter (2) according to claim 13, characterized in that the locking member (32) in each case forms a link guide path (52) for each holding point (26).
- Hose lifter (2) according to one or more of the preceding claims, characterized in that the two coupling regions (36, 38) of the locking member (32) and the holding points (26) are designed such that the releasable holding connection is a magnetic or electromagnetic holding connection.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102020111129.0A DE102020111129B4 (en) | 2020-04-23 | 2020-04-23 | tube lifter |
Publications (2)
Publication Number | Publication Date |
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EP3904269A1 EP3904269A1 (en) | 2021-11-03 |
EP3904269B1 true 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 |
---|---|
EP (1) | EP3904269B1 (en) |
DE (1) | DE102020111129B4 (en) |
Family Cites Families (5)
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 |
EP2223881B1 (en) * | 2009-02-26 | 2011-08-31 | 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 |
DE102018105606A1 (en) * | 2018-03-12 | 2019-09-12 | J. Schmalz Gmbh | Operating device for a tube lifter and tube lifter |
-
2020
- 2020-04-23 DE DE102020111129.0A patent/DE102020111129B4/en active Active
-
2021
- 2021-04-21 EP EP21169627.3A patent/EP3904269B1/en active Active
Also Published As
Publication number | Publication date |
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EP3904269A1 (en) | 2021-11-03 |
DE102020111129B4 (en) | 2022-02-24 |
DE102020111129A1 (en) | 2021-10-28 |
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