EP1541771B1 - Hydraulic swivel drive for grab bucket - Google Patents
Hydraulic swivel drive for grab bucket Download PDFInfo
- Publication number
- EP1541771B1 EP1541771B1 EP04026554A EP04026554A EP1541771B1 EP 1541771 B1 EP1541771 B1 EP 1541771B1 EP 04026554 A EP04026554 A EP 04026554A EP 04026554 A EP04026554 A EP 04026554A EP 1541771 B1 EP1541771 B1 EP 1541771B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swivel
- plunger
- shaft drive
- drive piece
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 239000012530 fluid Substances 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 208000012886 Vertigo Diseases 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002184 metal 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
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
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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
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/005—Grab supports, e.g. articulations; Oscillation dampers; Orientation
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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
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
Definitions
- the present invention relates to a hydraulic rotary actuator for a gripper, which has two forceps movable gripping arms, in particular clamshell buck, with two rotatably mounted in a shell carrier, mutually parallel pivot shafts whose shaft ends are connected to the gripping arms, and with a shaft drive piece which is parallel to the Swivel shafts is mounted displaceably and is in screw engagement with both pivot shafts, so that by pivoting the shaft drive piece, the pivot shafts are rotated in opposite directions.
- Such a rotary actuator for a clamshell grab is from the DE 201 07 206 U1 known, in which the pivot shafts are each part of a hydraulic motor which is enclosed by the shell carrier formed as a closed housing.
- each pipe sections which are longitudinally displaceable, but rotatably guided and are in screw engagement with the respective pivot shaft, so that a longitudinal displacement of the pipe pieces leads to a rotation of the pivot shafts.
- the pipe sections are connected by a common center piece, with Together they form a piston, which is housed inside the housing, which forms the cylinder for the piston.
- the housing defines on both sides of this piston in each case a pressure chamber which can be acted upon by hydraulic fluid.
- the piston and the tube pieces provided thereon move in one or the other direction, so that the pivot shafts either swing open or pivot the gripper shells attached thereto.
- the present invention is therefore an object of the invention to provide an improved rotary actuator of the type mentioned, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner.
- Preferably should be provided with a structurally simple construction, a larger center distance of the pivot shafts.
- the rotary actuator is thus characterized according to the invention in that the shaft drive piece, which is in screw engagement with the pivot shafts, is driven by at least one plunger which can be acted upon hydraulically. It no longer forms the entire shaft drive piece of the piston acted upon by the hydraulic fluid, and accordingly the housing no longer has to act and be designed as a cylinder for the shaft drive piece. Due to the at least one plunger connected between the shell carrier and the shaft drive piece, a much smaller pressure chamber is achieved, so that only relatively small forces have to act and be intercepted even with a large center distance of the pivot shafts. In addition, the sealing of the pressure chamber is much easier. A seal between the shaft drive piece and the pivot shafts can also be omitted as a seal between the shaft drive piece and the entire assembly receiving shell carrier. It is sufficient if only the plunger is sealed against the piston acting on the pressure chamber.
- the plunger engaging pressure chamber is provided in the shaft drive piece.
- the plunger can be slidably seated in a cylindrical, in particular circular-cylindrical recess in the shaft drive piece and be supported by a protruding from the recess end portion relative to the shell carrier.
- the plunger can be supported with its protruding from the recess end directly to the inner wall of the shell carrier. It is understood that, where appropriate, but also intermediate pieces such as piston rods and the like can be interposed.
- the pressure piston acting on the plunger not in the shaft drive piece, but in the tray carrier.
- the plunger is in this case slidably in a cylindrical recess in the shell carrier and is supported against the shaft drive piece, so that a displacement of the plunger in the cylindrical Recess in the shell carrier shifts the shaft drive piece accordingly.
- the reverse arrangement described above with the slidable receiving the plunger in the shaft drive piece has the advantage of a more compact arrangement with a simplified shape of the tray carrier.
- the at least one plunger can be designed double acting. He can do this in the manner of a double-acting hydraulic cylinder sitting in the cylindrical recess, that on both sides of the piston, a pressure chamber is limited, and supported for example on protruding from the chamber piston rods on both sides of the shell support.
- a plurality of unilaterally acting plunger are provided, one of which serves to shift the shaft drive piece in a first direction and another of the displacement of the shaft drive piece in the opposite direction.
- a pair of first plunger and a pair of second plunger are provided.
- Said pair of first plunger serves to move the shaft drive piece in a first direction, which corresponds to a pivoting of the gripping arms.
- Said pair of second plunger serves to move the shaft drive piece in a second direction, which corresponds to a pivoting together of the gripping arms.
- the first plunger and the second plunger are each arranged symmetrically to a plane which forms the plane of symmetry to the two pivot shafts. As a result, tilting of the shaft drive piece is prevented. Uniform forces act on both pivot shafts.
- the first plunger are perpendicular to a line connecting the two pivot shafts spaced apart.
- the second plungers are advantageously spaced apart from one another parallel to the straight line connecting the two pivot shafts.
- the plungers could all have the same cross-sectional area. Preferably, however, the plungers have different cross-sectional areas.
- the plungers causing the pivoting of the gripping arms can have a larger cross-sectional area than the plungers, which cause the pivoting arms of the gripping arms. Due to the overall larger cross-sectional area of the or the plunger for pivoting together greater forces for the pivoting together of the gripper can be achieved at the same hydraulic pressure.
- the shaft drive piece has two engagement portions, which are each provided with an internal thread toothing and each sit on one of the pivot shafts, as well as a connecting the two engagement portions centerpiece on which engages the at least one plunger.
- a plurality of cylindrical recesses may be formed in the center piece, which are open to opposite sides of the center piece and each receive a plunger.
- the arrangement of several mutually offset plunger since the cylindrical recesses can overlap each other in depth.
- the centerpiece does not need to twice accommodate the depth of the cylindrical recesses for the plunger, so that a particularly short-building arrangement can be achieved.
- the shell carrier is formed as a closed housing from which protrude substantially only the shaft ends of the pivot shafts.
- the remaining sections and components of the pivot drive can be arranged inside the closed housing, so that a total encapsulated construction is achieved, which protects the pivot drive from external environmental influences.
- the housing may advantageously consist of two to the longitudinal axes of the pivot shafts substantially vertical end walls and two housing halves which connect the end walls together.
- the end walls preferably have on their inner sides supporting surfaces for the plunger.
- the shaft drive piece may be spaced from the housing walls by a gap.
- the shaft drive piece may be free from seals to the housing.
- the seals between the shaft drive piece and the pivot shafts can be omitted.
- the shaft drive piece has suitable pressure connections, which can be connected to the hydraulic supply of the gripper-bearing hoist.
- the pivot drive shown in the drawings comprises a shell carrier 1, which is designed as a housing and can be coupled in a conventional manner to the stem of an excavator or other hoist.
- the shell carrier 1 may have on its upper side an annular pivot bearing 2 and a rotary drive associated therewith 3 in order to rotate the gripper about an upright axis can.
- the shell support 1 comprises two mutually parallel end walls 4 and 5, which are interconnected by two housing half-shells 6, 7, which extend substantially perpendicular to the end walls 4 and 5 (see. FIG. 1 ).
- the two end walls 4 and 5 have a substantially elliptical shape and define together with the housing half-shells 6 and 7 a cylindrical, in section substantially elliptical interior.
- two pivot shafts 8 and 9 are arranged, which are arranged parallel to each other and spaced from each other.
- the two pivot shafts 8 and 9 are rotatable in the end walls 4 and 5, but axially fixed and protrude with their pin-shaped shaft ends out of the housing.
- At the pin-shaped shaft ends 10 can be coupled in a manner known per se, gripper shells, which are not shown in the drawing, rotatably, so that the gripper shells by turning the pivot shafts 8 and 9 can be pivoted up and down.
- the pivot shafts 8 and 9 are provided on its lying in the interior of the shell carrier 1 section with a helical toothing 11.
- a shaft drive piece 12 is engaged, which is arranged in the interior of the shell carrier 1 and is mounted displaceably parallel to the longitudinal axes of the pivot shafts 8 and 9.
- the shaft drive piece 12 comprises at opposite ends tubular engagement portions 13 which sit on the pivot shafts 8 and 9 and each having a helical internal toothing, which is in threaded engagement with the respective toothing 11 of the pivot shafts 8 and 9. If the shaft drive piece 12 is displaced in the direction parallel to the pivot shafts 8 and 9, the pivot shafts 8 and 9 are rotationally driven in opposite directions, as a result of which the gripper shells fastened to the shaft ends 10 open and close.
- the engagement portions 13 of the shaft drive piece 12 are interconnected, through the center piece 14 of the shaft drive piece 12.
- the shaft drive piece 12 may be an integrally integral casting.
- the shaft drive piece 12 may be a welded sheet metal profile piece.
- a plurality of plungers are provided which act on said center piece 14 of the shaft drive piece 12.
- FIG. 2 shows, a total of four plungers are provided, which are arranged crosswise and each extending parallel to the pivot shafts.
- Two first plunger 15 are arranged vertically above one another in the illustrated embodiment in the plane of symmetry of the pivot shaft drive.
- Two second plunger 16 are arranged perpendicular to the said plane of symmetry spaced from each other in a plane which also contains the two pivot shafts 8 and 9.
- the second plungers 16 have, as FIG. 2 shows a slightly larger cross section than the first plunger 15. Both first plunger 15 have the same cross section. Likewise, the two second plunger 16 have the same cross section.
- the plungers 15 and 16 are each formed circular cylindrical and stuck in circular cylindrical recesses 17 and 18 which are formed in the middle piece 14 of the shaft drive piece 12 each as a blind hole.
- the mentioned cylinder recesses 17 and 18 define together with the end faces of the plungers 15 and 16 seated in the recesses pressure chambers 19 and 20 (cf. FIG. 1 ), which are acted upon with pressurized fluid to displace the plunger 15 and 16 relative to the shaft drive piece 12.
- the pressure chambers 19 and 20 can be acted upon by pressure fluid from the external hydraulic supply via pressure ports which are not specifically shown in the drawings.
- the pressurized fluid supply or discharge into and out of the pressure chambers 19 and 20 can take place through the walls of the cylinder recesses 17 and 18 or else through the plungers.
- the plungers 15 and 16 have a protruding from the cylinder recesses 17 and 18 end portion 21 and 22, which is supported relative to the respective end wall 4 or 5, in particular immediately adjacent thereto.
- the cylinder recesses 17 and 18 are open to opposite sides of the shaft drive piece 12 so that all the first plunger 15 are supported on the one end wall 4, while all second plunger 16 are supported on the opposite end wall 5 of the shell carrier 1.
- the support of the plunger 15 and 16 causes when pressurizing the pressure chambers 19 or 20, not the plunger 15 or 16 move, but the shaft drive piece 12 is moved accordingly.
- the shaft drive piece 12 need not be sealed against the pivot shafts 8 and 9 nor against the walls of the shell carrier 1, since it is no longer the space between shaft drive piece 12 and shell carrier 1, which serves as a pressure chamber. It only need the plungers 15 and 16 are hydraulically tight in the respective cylinder recess 17 and 18 sit.
- suitable sealing means for example in the form of sealing rings.
- corresponding sealing means for example in the form of sealing rings, may be provided on the circumference of the plunger to its end seated in the recess.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
- Manipulator (AREA)
- Earth Drilling (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen hydraulischen Schwenkantrieb für einen Greifer, der zwei zangenartig bewegbare Greifarme besitzt, insbesondere Zweischalengreifer, mit zwei in einem Schalenträger drehbar gelagerten, zueinander parallelen Schwenkwellen, deren Wellenenden mit den Greifarmen verbindbar sind, sowie mit einem Wellenantriebsstück, das parallel zu den Schwenkwellen verschieblich gelagert ist und mit beiden Schwenkwellen jeweils in Schraubeingriff steht, so dass durch Verschieben des Wellenantriebsstücks die Schwenkwellen gegenläufig verdreht werden.The present invention relates to a hydraulic rotary actuator for a gripper, which has two forceps movable gripping arms, in particular clamshell buck, with two rotatably mounted in a shell carrier, mutually parallel pivot shafts whose shaft ends are connected to the gripping arms, and with a shaft drive piece which is parallel to the Swivel shafts is mounted displaceably and is in screw engagement with both pivot shafts, so that by pivoting the shaft drive piece, the pivot shafts are rotated in opposite directions.
Ein solcher Schwenkantrieb für einen Zweischalengreifer ist aus der
Obwohl dieser vorbekannte Schwenkantrieb für Greifer große Vorteile besitzt, insbesondere sehr kompakt und kleinbauend ist und durch die gekapselte Bauweise der Hydraulikmotoren vor den rauen Umgebungseinflüssen bei Baustellenbetrieb geschützt ist, ist er in mehrerer Hinsicht verbesserungsfähig. Einerseits ist mit diesem vorbekannten Schwenkantrieb nur ein begrenzter Achsabstand der Schwenkwellen realisierbar. Sollen die Schwenkwellen für den entsprechenden Typ von Greiferschalen einen vorbestimmten, großen Abstand voneinander haben, entstehen bei der Druckbeaufschlagung des als Kolben wirkenden Wellenantriebsstücks sehr große, kaum noch zu beherrschende Kräfte, denen das Gehäuse bei vertretbarer konstruktiver Auslegung kaum zu widerstehen vermag. Andererseits bedarf dieser vorbekannte Schwenkantrieb aufwendiger Abdichtungen des als Kolben wirkenden Schwenkantriebsstücks zum einen gegenüber den Schwenkwellen und zum anderen gegenüber dem Gehäuse.Although this prior art rotary actuator for gripper has great advantages, in particular is very compact and kleinbauend and is protected by the encapsulated design of the hydraulic motors from the harsh environmental conditions at construction site, he is capable of improvement in several respects. On the one hand, only a limited center distance of the pivot shafts can be realized with this known pivot drive. If the pivot shafts for the corresponding type of gripper shells have a predetermined, large distance from each other, arise in the pressurization of acting as a piston shaft drive piece very large, barely dominated forces, which the housing is hardly able to with reasonable constructive design. On the other hand, this previously known pivoting drive requires complex seals of the piston drive piece acting as a piston with respect to the pivot shafts and to the other with respect to the housing.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen verbesserten Schwenkantrieb der genannten Art zu schaffen, der Nachteile des Standes der Technik vermeidet und letzteren in vorteilhafter Weise weiterbildet. Vorzugsweise soll mit einem konstruktiv einfachen Aufbau ein größerer Achsabstand der Schwenkwellen vorgesehen werden können.The present invention is therefore an object of the invention to provide an improved rotary actuator of the type mentioned, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner. Preferably should be provided with a structurally simple construction, a larger center distance of the pivot shafts.
Erfindungsgemäß wird diese Aufgabe durch einen Schwenkantrieb gemäß Anspruch 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.According to the invention this object is achieved by a pivot drive according to
Der Schwenkantrieb zeichnet sich also erfindungsgemäß dadurch aus, dass das Wellenantriebsstück, das mit den Schwenkwellen in Schraubeingriff steht, von zumindest einem hydraulisch beaufschlagbaren Plungerkolben angetrieben wird. Es bildet nicht mehr das ganze Wellenantriebsstück den vom Hydraulikfluid beaufschlagten Kolben, so dass dementsprechend das Gehäuse nicht mehr als Zylinder für das Wellenantriebsstück fungieren und ausgebildet sein muss. Durch den zumindest einen, zwischen den Schalenträger und das Wellenantriebsstück geschalteten Plungerkolben wird eine vom Volumen her sehr viel kleinere Druckkammer erreicht, so dass auch bei großem Achsabstand der Schwenkwellen nur verhältnismäßig geringe Kräfte wirken und abgefangen werden müssen. Zudem ist die Abdichtung der Druckkammer wesentlich einfacher. Eine Dichtung zwischen dem Wellenantriebsstück und den Schwenkwellen kann ebenso entfallen wie eine Dichtung zwischen dem Wellenantriebsstück und dem die gesamte Anordnung aufnehmenden Schalenträger. Es ist ausreichend, wenn lediglich der Plungerkolben gegenüber der den Kolben beaufschlagenden Druckkammer abgedichtet ist.The rotary actuator is thus characterized according to the invention in that the shaft drive piece, which is in screw engagement with the pivot shafts, is driven by at least one plunger which can be acted upon hydraulically. It no longer forms the entire shaft drive piece of the piston acted upon by the hydraulic fluid, and accordingly the housing no longer has to act and be designed as a cylinder for the shaft drive piece. Due to the at least one plunger connected between the shell carrier and the shaft drive piece, a much smaller pressure chamber is achieved, so that only relatively small forces have to act and be intercepted even with a large center distance of the pivot shafts. In addition, the sealing of the pressure chamber is much easier. A seal between the shaft drive piece and the pivot shafts can also be omitted as a seal between the shaft drive piece and the entire assembly receiving shell carrier. It is sufficient if only the plunger is sealed against the piston acting on the pressure chamber.
In Weiterbildung der Erfindung ist die den Plungerkolben beaufschlagende Druckkammer in dem Wellenantriebsstück vorgesehen. Der Plungerkolben kann verschieblich in einer zylindrischen, insbesondere kreiszylindrischen Ausnehmung in dem Wellenantriebsstück sitzen und sich mit einem aus der Ausnehmung herausragenden Endabschnitt gegenüber dem Schalenträger abstützen. Um eine besonders kompakte, kurzbauende Anordnung zu erreichen, kann sich der Plungerkolben mit seinem aus der Ausnehmung herausragenden Ende direkt an der Innenwandung des Schalenträgers abstützen. Es versteht sich, dass hier ggf. jedoch auch Zwischenstücke wie Kolbenstangen und dergleichen zwischengeschaltet sein können.In a further development of the invention, the plunger engaging pressure chamber is provided in the shaft drive piece. The plunger can be slidably seated in a cylindrical, in particular circular-cylindrical recess in the shaft drive piece and be supported by a protruding from the recess end portion relative to the shell carrier. In order to achieve a particularly compact, short-building arrangement, the plunger can be supported with its protruding from the recess end directly to the inner wall of the shell carrier. It is understood that, where appropriate, but also intermediate pieces such as piston rods and the like can be interposed.
Grundsätzlich wäre es auch möglich, die den Plungerkolben beaufschlagende Druckkammer nicht in dem Wellenantriebsstück, sondern in dem Schalenträger anzuordnen. Der Plungerkolben sitzt in diesem Fall verschieblich in einer zylindrischen Ausnehmung in dem Schalenträger und stützt sich gegenüber dem Wellenantriebsstück ab, so dass eine Verschiebung des Plungerkolbens in der zylindrischen Ausnehmung im Schalenträger das Wellenantriebsstück entsprechend verschiebt. Die umgekehrte, zuvor beschriebene Anordnung mit der verschieblichen Aufnahme des Plungerkolbens im Wellenantriebsstück besitzt jedoch den Vorteil einer kompakteren Anordnung bei vereinfachter Form des Schalenträgers.In principle, it would also be possible to arrange the pressure piston acting on the plunger not in the shaft drive piece, but in the tray carrier. The plunger is in this case slidably in a cylindrical recess in the shell carrier and is supported against the shaft drive piece, so that a displacement of the plunger in the cylindrical Recess in the shell carrier shifts the shaft drive piece accordingly. However, the reverse arrangement described above with the slidable receiving the plunger in the shaft drive piece has the advantage of a more compact arrangement with a simplified shape of the tray carrier.
Um die Schwenkwellen in beide Richtungen antreiben und die Greifarme aufschwenken und zuschwenken zu können, kann der zumindest eine Plungerkolben doppelt wirkend ausgebildet sein. Er kann hierzu nach Art eines doppelt wirkenden Hydraulikzylinders so in der zylindrischen Ausnehmung sitzen, dass auf beiden Seiten des Kolbens eine Druckkammer begrenzt ist, und sich beispielsweise über aus der Kammer herausragenden Kolbenstangen beidseitig am Schalenträger abstützen. Vorzugsweise jedoch sind mehrere jeweils einseitig wirkende Plungerkolben vorgesehen, von denen einer der Verschiebung des Wellenantriebsstücks in eine erste Richtung und ein anderer der Verschiebung des Wellenantriebsstücks in die entgegengesetzte Richtung dient.In order to drive the pivot shafts in both directions and to swing the gripping arms and swivel, the at least one plunger can be designed double acting. He can do this in the manner of a double-acting hydraulic cylinder sitting in the cylindrical recess, that on both sides of the piston, a pressure chamber is limited, and supported for example on protruding from the chamber piston rods on both sides of the shell support. Preferably, however, a plurality of unilaterally acting plunger are provided, one of which serves to shift the shaft drive piece in a first direction and another of the displacement of the shaft drive piece in the opposite direction.
Nach einer Weiterbildung der Erfindung sind ein Paar erste Plungerkolben sowie ein Paar zweite Plungerkolben vorgesehen. Das genannte Paar erster Plungerkolben dient dem Verschieben des Wellenantriebsstücks in eine erste Richtung, die einem Aufschwenken der Greifarme entspricht. Das genannte Paar zweiter Plungerkolben dient dem Verschieben des Wellenantriebsstücks in eine zweite Richtung, die einem Zusammenschwenken der Greifarme entspricht. Durch das Vorsehen jeweils mehrerer Plungerkolben für das Verschieben des Wellenantriebsstücks in eine Richtung können mit einfachen, im Querschnitt kreisförmigen Plungerkolben ausreichende Querschnittsflächen der Druckkammern erreicht werden, um die notwendigen Drehmomente zu erzeugen. Um eine gleichmäßige Beaufschlagung der in eine Richtung wirkenden Plungerkolben zu erreichen, sind die zu den ersten Plungerkolben gehörenden Druckkammern sowie die zu den zweiten Plungerkolben gehörenden Druckkammern jeweils zueinander parallel geschaltet, so dass in den Druckkammern jeweils derselbe Druck herrscht.According to a development of the invention, a pair of first plunger and a pair of second plunger are provided. Said pair of first plunger serves to move the shaft drive piece in a first direction, which corresponds to a pivoting of the gripping arms. Said pair of second plunger serves to move the shaft drive piece in a second direction, which corresponds to a pivoting together of the gripping arms. By providing a plurality of plungers each for moving the shaft drive piece in one direction, sufficient cross-sectional areas of the pressure chambers can be achieved with simple, circular cross-section plunger in order to produce the necessary torques. In order to achieve a uniform application of the plunger which acts in one direction, the pressure chambers belonging to the first plunger and the pressure chambers belonging to the second plunger pistons are connected in parallel to one another, so that the same pressure prevails in the pressure chambers.
In Weiterbildung der Erfindung sind die ersten Plungerkolben und die zweiten Plungerkolben jeweils symmetrisch zu einer Ebene angeordnet, die die Symmetrieebene zu den beiden Schwenkwellen bildet. Hierdurch wird ein Verkanten des Wellenantriebsstücks unterbunden. Es wirken gleichmäßige Kräfte auf beide Schwenkwellen. In Weiterbildung der Erfindung sind die ersten Plungerkolben senkrecht zu einer die beiden Schwenkwellen verbindenden Geraden voneinander beabstandet. Die zweiten Plungerkolben sind vorteilhafterweise parallel zu der die beiden Schwenkwellen verbindenden Geraden voneinander beabstandet.In a further development of the invention, the first plunger and the second plunger are each arranged symmetrically to a plane which forms the plane of symmetry to the two pivot shafts. As a result, tilting of the shaft drive piece is prevented. Uniform forces act on both pivot shafts. In a further development of the invention, the first plunger are perpendicular to a line connecting the two pivot shafts spaced apart. The second plungers are advantageously spaced apart from one another parallel to the straight line connecting the two pivot shafts.
Grundsätzlich könnten die Plungerkolben alle dieselbe Querschnittsfläche besitzen. Vorzugsweise besitzen die Plungerkolben jedoch unterschiedliche Querschnittsflächen. Insbesondere können die das Zusammenschwenken der Greifarme bewirkenden Plungerkolben eine größere Querschnittsfläche besitzen als die Plungerkolben, die das Aufschwenken der Greifarme bewirken. Durch die insgesamt größere Querschnittsfläche des oder der Plungerkolben für das Zusammenschwenken können bei gleichem Hydraulikdruck größere Kräfte für das Zusammenschwenken des Greifers erreicht werden.In principle, the plungers could all have the same cross-sectional area. Preferably, however, the plungers have different cross-sectional areas. In particular, the plungers causing the pivoting of the gripping arms can have a larger cross-sectional area than the plungers, which cause the pivoting arms of the gripping arms. Due to the overall larger cross-sectional area of the or the plunger for pivoting together greater forces for the pivoting together of the gripper can be achieved at the same hydraulic pressure.
In Weiterbildung der Erfindung besitzt das Wellenantriebsstück zwei Eingriffsabschnitte, die jeweils mit einer Innengewindeverzahnung versehen sind und jeweils auf einer der Schwenkwellen sitzen, sowie ein die beiden Eingriffsabschnitte verbindendes Mittelstück, an dem der zumindest eine Plungerkolben angreift. Insbesondere können in dem Mittelstück mehrere zylindrische Ausnehmungen ausgebildet sein, die zu gegenüberliegenden Seiten des Mittelstücks hin offen sind und jeweils einen Plungerkolben aufnehmen. Besonders vorteilhaft ist dabei die Anordnung mehrerer zueinander versetzter Plungerkolben, da die zylindrischen Ausnehmungen einander in der Tiefe überlappen können. Mit anderen Worten ausgedrückt braucht das Mittelstück nicht zweimal die Tiefe der zylindrischen Ausnehmungen für den Plungerkolben aufnehmen, so dass eine besonders kurzbauende Anordnung erreicht werden kann.In a further development of the invention, the shaft drive piece has two engagement portions, which are each provided with an internal thread toothing and each sit on one of the pivot shafts, as well as a connecting the two engagement portions centerpiece on which engages the at least one plunger. In particular, a plurality of cylindrical recesses may be formed in the center piece, which are open to opposite sides of the center piece and each receive a plunger. Particularly advantageous is the arrangement of several mutually offset plunger, since the cylindrical recesses can overlap each other in depth. In other words, the centerpiece does not need to twice accommodate the depth of the cylindrical recesses for the plunger, so that a particularly short-building arrangement can be achieved.
Vorzugsweise ist der Schalenträger als geschlossenes Gehäuse ausgebildet, aus dem im wesentlichen nur die Wellenenden der Schwenkwellen herausragen. Die restlichen Abschnitte und Komponenten des Schwenkantriebs können im Inneren des geschlossenen Gehäuses angeordnet sein, so dass eine insgesamt gekapselte Bauweise erreicht wird, die den Schwenkantrieb vor äußeren Umgebungseinwirkungen schützt. Das Gehäuse kann vorteilhafterweise aus zwei zu den Längsachsen der Schwenkwellen im wesentlichen senkrechten Stirnwandungen sowie zwei Gehäusehalbschalen bestehen, die die Stirnwandungen miteinander verbinden. Die Stirnwandungen besitzen auf ihren Innenseiten vorzugsweise Abstützflächen für die Plungerkolben.Preferably, the shell carrier is formed as a closed housing from which protrude substantially only the shaft ends of the pivot shafts. The remaining sections and components of the pivot drive can be arranged inside the closed housing, so that a total encapsulated construction is achieved, which protects the pivot drive from external environmental influences. The housing may advantageously consist of two to the longitudinal axes of the pivot shafts substantially vertical end walls and two housing halves which connect the end walls together. The end walls preferably have on their inner sides supporting surfaces for the plunger.
Das Wellenantriebsstück kann von den Gehäusewandungen durch einen Spalt beabstandet sein. Insbesondere kann das Wellenantriebsstück frei von Dichtungen zu dem Gehäuse hin sein. Ebenso können die Dichtungen zwischen dem Wellenantriebsstück und den Schwenkwellen entfallen.The shaft drive piece may be spaced from the housing walls by a gap. In particular, the shaft drive piece may be free from seals to the housing. Likewise, the seals between the shaft drive piece and the pivot shafts can be omitted.
Um die in dem Mittelstück des Wellenantriebsstücks ausgebildeten Druckkammern für die Plungerkolben mit Hydraulikfluid beaufschlagen zu können, besitzt das Wellenantriebsstück geeignete Druckanschlüsse, die mit der Hydraulikversorgung des den Greifer tragenden Hebezeugs verbindbar sind.In order to be able to apply hydraulic fluid to the pressure chambers for the plunger pistons formed in the center piece of the shaft drive piece, the shaft drive piece has suitable pressure connections, which can be connected to the hydraulic supply of the gripper-bearing hoist.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. In den Zeichnungen zeigen:
- Fig. 1:
- eine perspektivische Teilschnittansicht eines Schwenkantriebs für einen Zweischalengreifer nach einer bevorzugten Ausführung der Erfindung, bei der eine der Schwenkwellen sowie zwei der Plungerkolben des hydraulischen Antriebs zum Drehen der Schwenkwellen freigeschnitten sind,
- Fig. 2:
- einen vertikalen Längsschnitt senkrecht zu den Schwenkwellen durch den Schwenkantrieb aus
Fig. 1 , - Fig. 3:
- einen horizontalen Längsschnitt durch den Antrieb aus den vorhergehenden Figuren, der die Schnittebene enthaltend die beiden Schwenkwellen zeigt, und
- Fig. 4:
- einen vertikalen Querschnitt parallel zu den Schwenkwellen, der eine Schnittebene zeigt, die der Symmetrieebene zwischen den beiden Schwenkwellen entspricht.
- Fig. 1:
- a partial perspective sectional view of a rotary actuator for a clamshell grab according to a preferred embodiment of the invention, in which one of the pivot shafts and two of the plunger of the hydraulic drive are cut free for rotating the pivot shafts,
- Fig. 2:
- a vertical longitudinal section perpendicular to the pivot shafts through the pivot drive
Fig. 1 . - 3:
- a horizontal longitudinal section through the drive of the preceding figures, showing the sectional plane containing the two pivot shafts, and
- 4:
- a vertical cross-section parallel to the pivot shafts, showing a sectional plane corresponding to the plane of symmetry between the two pivot shafts.
Der in den Zeichnungen dargestellte Schwenkantrieb umfasst einen Schalenträger 1, der als Gehäuse ausgebildet ist und in an sich üblicher Weise an den Stiel eines Baggers oder eines anderen Hebezeugs ankuppelbar ist. Wie
Der Schalenträger 1 umfasst zwei zueinander parallele Stirnwandungen 4 und 5, die durch zwei Gehäusehalbschalen 6, 7 miteinander verbunden sind, die sich im wesentlichen senkrecht zu den Stirnwandungen 4 und 5 erstrecken (vgl.
Im Inneren des von dem Schalenträger 1 gebildeten Gehäuses sind zwei Schwenkwellen 8 und 9 angeordnet, die parallel zueinander angeordnet und voneinander beabstandet sind. Die beiden Schwenkwellen 8 und 9 sind in den Stirnwandungen 4 und 5 drehbar, jedoch axial fest gelagert und ragen mit ihren zapfenförmigen Wellenenden aus dem Gehäuse heraus. An den zapfenförmigen Wellenenden 10 können in an sich bekannter Weise Greiferschalen, die in der Zeichnung nicht gezeigt sind, drehfest angekuppelt werden, so dass die Greiferschalen durch Verdrehen der Schwenkwellen 8 und 9 auf- und zugeschwenkt werden können.Inside the housing formed by the
Wie
Mit beiden Schwenkwellen 8 und 9 steht ein Wellenantriebsstück 12 in Eingriff, das im Inneren des Schalenträgers 1 angeordnet und parallel zu den Längsachsen der Schwenkwellen 8 und 9 verschieblich gelagert ist. Das Wellenantriebsstück 12 umfasst an gegenüberliegenden Enden rohrförmige Eingriffsabschnitte 13, die auf den Schwenkwellen 8 und 9 sitzen und jeweils eine schraubenförmige Innenverzahnung besitzen, die mit der jeweiligen Verzahnung 11 der Schwenkwellen 8 und 9 in Schraubeingriff steht. Wird das Wellenantriebsstück 12 in Richtung parallel zu den Schwenkwellen 8 und 9 verschoben, werden die Schwenkwellen 8 und 9 gegensinnig rotatorisch angetrieben, wodurch die an den Wellenenden 10 befestigten Greiferschalen auf- und zuschwenken.With both
Wie die
Um das Wellenantriebsstück 12 verschieben und hierdurch die Schwenkwellen 8 und 9 rotatorisch antreiben zu können, sind mehrere Plungerkolben vorgesehen, die das genannte Mittelstück 14 des Wellenantriebsstücks 12 beaufschlagen. Wie
Zwei erste Plungerkolben 15 sind in der gezeichneten Ausführungsform vertikal übereinander in der Symmetrieebene des Schwenkwellenantriebs angeordnet. Zwei zweite Plungerkolben 16 sind senkrecht zu der genannten Symmetrieebene voneinander beabstandet in einer Ebene angeordnet, die auch die beiden Schwenkwellen 8 und 9 enthält. Die zweiten Plungerkolben 16 besitzen, wie
Die Plungerkolben 15 und 16 sind jeweils kreiszylindrisch ausgebildet und stecken in kreiszylindrischen Ausnehmungen 17 und 18, die in dem Mittelstück 14 des Wellenantriebsstücks 12 jeweils als Sackloch ausgebildet sind. Die genannten Zylinderausnehmungen 17 und 18 begrenzen zusammen mit den Stirnflächen der in den Ausnehmungen sitzenden Plungerkolben 15 und 16 Druckkammern 19 bzw. 20 (vgl.
Die Plungerkolben 15 und 16 besitzen einen aus den Zylinderausnehmungen 17 und 18 heraustretenden Endabschnitt 21 bzw. 22, der gegenüber der jeweiligen Stirnwandung 4 oder 5 abgestützt ist, insbesondere unmittelbar daran ansteht. Wie
Wie die
Claims (10)
- Hydraulic swivel drive for a grab, which has two grab arms which can be moved in a pincer-like manner, in particular a clamshell grab, having two mutually parallel swivel shafts (8, 9) which are rotatably mounted in a shell-like support (1), the shaft ends (10) of which swivel shafts can be connected to the grab arms, and having a shaft drive piece (12) which is mounted so as to be displaceable in parallel with the swivel shafts (8, 9) and is in threaded engagement with both swivel shafts (8, 9) so that displacement of the shaft drive piece (12) causes the swivel shafts (8, 9) to be rotated in opposite directions, characterised in that at least one plunger piston (15, 16) which can be influenced hydraulically is provided to displace the shaft drive piece (12).
- Swivel drive as claimed in the preceding claim, wherein the plunger piston (15, 16) is displaceably received in a cylindrical, in particular a circular cylindrical, recess (17, 18) in the shaft drive piece (12) and is supported with respect to the shell-like support (1) with an end portion protruding out of the recess (17, 18).
- Swivel drive as claimed in any one of the preceding claims, wherein a first plunger piston (15) is provided to displace the shaft drive piece (12) in a first direction which corresponds to the grab arms pivoting open, and a second plunger piston (16) is provided to displace the shaft drive piece (12) in a second direction which corresponds to the grab arms pivoting towards each other.
- Swivel drive as claimed in the preceding claim, wherein a pair of first plunger pistons (15) and/or a pair of second plunger pistons (16) is/are provided.
- Swivel drive as claimed in the preceding claim, wherein the first plunger pistons (15) and the second plunger pistons (16) are in each case disposed symmetrically in relation to a plane of symmetry with respect to the swivel shafts (8, 9) and/or are spaced apart from each other in different directions.
- Swivel drive as claimed in any one of the preceding claims, wherein at least one first plunger piston (15) with a smaller cross-sectional area than a second plunger piston (16) is provided.
- Swivel drive as claimed in any one of the preceding claims, wherein the shaft drive piece (12) has two preferably tubular engagement portions (13) which are each provided with internal thread toothing and are respectively positioned on one of the swivel shafts (8, 9), and a middle piece (14) which connects the two engagement portions (13) and which is engaged by the at least one plunger piston (15, 16).
- Swivel drive as claimed in any one of the preceding claims, wherein the shaft drive piece (12) is formed without seals with respect to the shell-like support (1) and/or the swivel shafts (8, 9).
- Swivel drive as claimed in any one of the preceding claims, wherein the shell-like support (1) is formed as a closed housing from which substantially only the shaft ends (10) of the swivel shafts (8, 9) protrude, wherein the housing preferably has two end walls (4, 5) which are substantially perpendicular to the longitudinal axes of the swivel shafts (8, 9), are connected to each other by two housing half shells (6, 7) and comprise at least one support surface for the at least one plunger piston (15, 16).
- Swivel drive as claimed in any one of the preceding claims, wherein the shaft drive piece (12) and/or the at least one plunger piston (15, 16) have pressure connections, by means of which the pressure chamber (19, 20) provided between the shaft drive piece (12) and the at least one plunger piston can be influenced by pressurised fluid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL04026554T PL1541771T3 (en) | 2003-12-11 | 2004-11-09 | Hydraulic swivel drive for grab bucket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20319227U | 2003-12-11 | ||
DE20319227U DE20319227U1 (en) | 2003-12-11 | 2003-12-11 | Hydraulic rotary actuator for a gripper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1541771A1 EP1541771A1 (en) | 2005-06-15 |
EP1541771B1 true EP1541771B1 (en) | 2009-09-30 |
Family
ID=34485635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04026554A Not-in-force EP1541771B1 (en) | 2003-12-11 | 2004-11-09 | Hydraulic swivel drive for grab bucket |
Country Status (11)
Country | Link |
---|---|
US (1) | US7448312B2 (en) |
EP (1) | EP1541771B1 (en) |
JP (1) | JP4584694B2 (en) |
KR (1) | KR20050058207A (en) |
AT (1) | ATE444407T1 (en) |
CA (1) | CA2489610A1 (en) |
DE (2) | DE20319227U1 (en) |
DK (1) | DK1541771T3 (en) |
ES (1) | ES2334227T3 (en) |
NO (1) | NO20045313L (en) |
PL (1) | PL1541771T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3333112A1 (en) | 2016-12-09 | 2018-06-13 | Cargotec Patenter AB | Load handling tool and hydraulic crane comprising such a load handling tool |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004013158U1 (en) * | 2004-08-23 | 2006-01-12 | Kinshofer Greiftechnik Gmbh & Co. Kg | Hydraulic swivel drive for gripper, has grip arms with shafts that are parallel to one another and axially supported by hydrostatic axial bearing, where shafts are designed free of external bearing pressure supply |
ITTO20120163A1 (en) * | 2012-02-24 | 2013-08-25 | Cangini Benne Srl | OPERATING MACHINE PROVIDED WITH A TILTING DEVICE FOR AN EQUIPMENT |
DE202014105319U1 (en) * | 2014-11-05 | 2014-11-17 | Igus Gmbh | Rotary cylinder |
DE202015006973U1 (en) | 2015-10-06 | 2017-01-10 | Kinshofer Gmbh | Hydraulic rotary actuator and gripper with such a rotary actuator |
SI25733A (en) | 2018-11-23 | 2020-05-29 | Rafko Voje | Multipurpose modular hydarulic gripper with synchronic and asynchronic operation |
DE202021103928U1 (en) | 2021-07-23 | 2022-10-25 | Kinshofer Gmbh | Hydraulic swivel drive for a grab |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US829279A (en) * | 1905-03-21 | 1906-08-21 | Bernard B Mears | Gas-engine. |
US2678519A (en) * | 1953-03-27 | 1954-05-18 | Emhart Mfg Co | Pneumatic control means for glass severing mechanism |
DE1864451U (en) * | 1960-06-03 | 1962-12-27 | Heinrich Baer | HYDRAULICALLY ACTUATED GRIPPER. |
US3192783A (en) * | 1962-09-28 | 1965-07-06 | Robert C Cruzan | Engine |
DE3049355A1 (en) * | 1980-12-29 | 1982-07-29 | Herbert 6370 Oberursel Oetzel | Fluid-operated drive mechanism - has ram with piston rod passing through baseplate and mounted on spindle nut |
FR2642840B1 (en) * | 1989-02-09 | 1993-06-25 | Total Petroles | METHOD AND CELL FOR MEASURING THE COEFFICIENTS OF ADHESION AND FRICTION OF A DRILLING FLUID |
DE4030730A1 (en) * | 1990-09-28 | 1992-04-09 | Gerhard Kell | Mechanical movement conversion unit - converts linear stroke movement into circulating radial movement using stroke curve component |
JPH09273374A (en) * | 1996-04-08 | 1997-10-21 | Hoei Sangyo Kk | Excavating device for earth drill |
US5651302A (en) * | 1996-07-11 | 1997-07-29 | Fabco Air, Inc. | Actuator pump |
DE29621601U1 (en) * | 1996-12-12 | 1998-04-09 | Kinshofer Greiftechnik GmbH, 83666 Waakirchen | Clamshell buckets |
DE20107206U1 (en) * | 2001-04-02 | 2002-08-08 | Kinshofer Greiftechnik | Drive device for a gripping device |
US7210720B2 (en) * | 2002-06-28 | 2007-05-01 | 1994 Weyer Family Limited Partnership | Timed rotation tool assembly and actuator |
-
2003
- 2003-12-11 DE DE20319227U patent/DE20319227U1/en not_active Expired - Lifetime
-
2004
- 2004-11-09 PL PL04026554T patent/PL1541771T3/en unknown
- 2004-11-09 DE DE502004010153T patent/DE502004010153D1/en active Active
- 2004-11-09 EP EP04026554A patent/EP1541771B1/en not_active Not-in-force
- 2004-11-09 DK DK04026554T patent/DK1541771T3/en active
- 2004-11-09 ES ES04026554T patent/ES2334227T3/en active Active
- 2004-11-09 AT AT04026554T patent/ATE444407T1/en active
- 2004-12-03 NO NO20045313A patent/NO20045313L/en not_active Application Discontinuation
- 2004-12-09 KR KR1020040103427A patent/KR20050058207A/en not_active Application Discontinuation
- 2004-12-09 JP JP2004356537A patent/JP4584694B2/en not_active Expired - Fee Related
- 2004-12-09 CA CA002489610A patent/CA2489610A1/en not_active Abandoned
- 2004-12-13 US US11/010,702 patent/US7448312B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3333112A1 (en) | 2016-12-09 | 2018-06-13 | Cargotec Patenter AB | Load handling tool and hydraulic crane comprising such a load handling tool |
WO2018104042A1 (en) | 2016-12-09 | 2018-06-14 | Cargotec Patenter Ab | Load handling tool and hydraulic crane comprising such a load handling tool |
Also Published As
Publication number | Publication date |
---|---|
JP4584694B2 (en) | 2010-11-24 |
ES2334227T3 (en) | 2010-03-08 |
PL1541771T3 (en) | 2010-02-26 |
DE502004010153D1 (en) | 2009-11-12 |
JP2005171754A (en) | 2005-06-30 |
US7448312B2 (en) | 2008-11-11 |
US20050158186A1 (en) | 2005-07-21 |
DK1541771T3 (en) | 2009-11-23 |
NO20045313L (en) | 2005-06-13 |
KR20050058207A (en) | 2005-06-16 |
ATE444407T1 (en) | 2009-10-15 |
DE20319227U1 (en) | 2005-04-21 |
EP1541771A1 (en) | 2005-06-15 |
CA2489610A1 (en) | 2005-06-11 |
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