EP1327600A1 - Greifvorrichtung - Google Patents
Greifvorrichtung Download PDFInfo
- Publication number
- EP1327600A1 EP1327600A1 EP03000045A EP03000045A EP1327600A1 EP 1327600 A1 EP1327600 A1 EP 1327600A1 EP 03000045 A EP03000045 A EP 03000045A EP 03000045 A EP03000045 A EP 03000045A EP 1327600 A1 EP1327600 A1 EP 1327600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- gripping
- gripping device
- opening
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—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 mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
- B66C1/48—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces to vertical edge portions of sheets, tubes, or like thin or thin-walled articles
- B66C1/485—Coil lifting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—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 mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
- B66C1/30—Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads
Definitions
- the invention relates to a gripping device according to the Preamble of claim 1.
- gripping devices in the art known, which are used to carry loads in a suitable manner Way to seize and move within a plant or to load or unload for their transport.
- pliers usually have two gripping arms on the opening in from two different sides intervene in the middle of a coil.
- the two gripper arms are telescopically connected to each other so that the gripper arms with hook-like extensions at their front ends are formed by an essentially translational Movement introduced into the opening in the middle of a coil can be.
- a paternoster system is known from US Pat. No. 4,676,560. whose drive is also rotatably mounted and over Damping elements is supported. If the There occurs a slight twisting of the drive, the is detected by suitable switches and to switch off the Drive leads.
- DE 196 19 364 C2 relates to a belt conveyor with a Drive unit, the opposite occurring during operation Reactive forces and moments are flexibly supported, so that in the event of disturbing forces, a movement of the drive unit and the drive is stopped by means of suitable switches can be done. Similar arrangements are known from US 2,555,880 and DE 909 908 known.
- Handling device is the connection between one Cantilever arm and a so-called gripper member rotatable, designed to be tiltable and flexible in the axial direction. at the application of excessively high forces always takes place axial change in position of a so-called switching bolt, the operated a switch.
- the invention is based on the object To provide gripping device which is improved in that that security related to a possible A heavy load falls out of the gripping device, especially in the event of a collision or impact, is increased.
- the gripping device at which is especially a coil tongs, at least two gripping elements.
- the two gripping elements are preferably as gripping arms with, for example, hook-shaped Ends provided to provide sheet metal coils with an opening in their To be able to take the middle.
- the invention is not is limited to this, it is preferred for the gripping elements that they have suitable telescopic legs through a essentially translational movement for gripping one Load can be moved towards each other.
- a suitable drive intended This preferably consists of an electric motor and a gear and a chain drive for moving of the legs on which the gripping arms are provided. Preferred is the chain used, which is the weakest link can represent to increase security educated.
- the gripping device according to the invention has a Drive for moving the gripping device as a whole.
- this drive can be used in a suitable manner on a crane or other handling device be provided on which the inventive Gripping device can be attached.
- the drive to Moving the entire gripping device can do this usually moved in any direction, as well be raised and lowered.
- a gripped load can Lowering lie on one side on one edge, resulting in a Tilting the load and opening the gripping elements, especially the gripper arms.
- a gripped load during a lateral movement of the Striking the gripping device against an obstacle, which is also tilting the load and opening the gripping device can effect.
- At least one Switch is provided by rotating the Torque support of the drive, preferably immediately, is actuated and with the drive for moving the Gripping device is coupled as a whole.
- rotation of the drive is detected by the switch and leads to an immediate shutdown of the drive Moving the gripping device as a whole.
- This will ensures that movement of the gripping device cannot lead to an extremely dangerous state is continued. For example, if a load is one-sided an edge rests when lowering, and the tilting movement of the The load begins to open the gripping elements, the drive becomes the gripping device according to the invention at least slightly twists what is detected by the switch, and more can be used to lower the load immediately to stop.
- a particularly good response behavior of the invention Device can be achieved in that the drive to open and close the gripping elements, the is rotatably supported according to the invention, around the motor shaft Motor, which forms part of the drive, rotatably mounted is.
- This ensures that the drive as a whole as little as possible with regard to the rotation Has moment of inertia, so that comparatively low Forces are required to twist and drive according to the safety device according to the invention either the drive itself or the drive to move the Total gripping device to switch off.
- the drive under consideration turns when Impact or collision forces are extremely immediate, so that safe operation thanks to this quick response is always guaranteed.
- the gripping device according to the invention including the damping and Safety device offers advantages when attached to the Torque support provided directly with is in contact with those compliant elements that are for the flexible support of the rotatably mounted drive are provided.
- a torque arm in the form of a Drive attached tab provided immediately with compliant elements. Possibly can be provided on the tab plate, which the Increase the contact area with the flexible elements.
- the Drive has a cycloidal gear. At a Cycloid gears are always about two thirds of those involved Teeth engaged so that shocks occurring are well drained off can be, and the transmission as a whole extremely becomes insensitive to shock. It can also be used of a cycloid gearbox was particularly preferred Realize embodiment of the invention, in which the Drive is rotatably mounted around the motor shaft of the motor. A cycloid gearbox can with such problems be combined with a motor that the output shaft of the Overall drive, unlike for example one Worm gear, aligned with the shaft of the motor.
- conical buffer elements preferably made of rubber.
- conical Buffer elements have a non-linear characteristic, see above that the force required to deflect increases with increasing Deflection is increased extensively, ensuring that can be that the security and Damping device only triggers in the event that actually a disturbance in the form of a collision or the like is present, while minor movements of the Drive, for example in the event of abrupt braking the insulation elements can be included.
- Fig. 1 there is also an accident in the form of a collision a gripped sheet metal coil 14 with a fixed Resistance indicated, the dangerousness of which by means of gripping device according to the invention are significantly reduced can.
- a force F is exerted on a lower region of the coil.
- This force F causes the sheet coil 14 to tilt, such as is indicated in Fig. 1.
- sheet coil 14 the two gripping arms move apart, which in extreme cases can lead to that one of the gripping arms 16 with the hook-like extension 24 at its free end from the opening in the middle of the Sheet coil 14 disengages, and the sheet coil 14 can fall down.
- Switch 40 is provided, which by an actuating element 42, which is attached to the torque arm 32, operated if there is a rotation of the drive and thus the Torque support 32 takes place.
- a twist occurs, for example, when the one to be recognized in FIG Impact force F, the two gripping arms 16 in the open position "want to move", and thereby over the legs 18 and Chain 20 an opening force is applied to the drive.
- the drive Due to the rotatable bearing, the drive can against the twisted force exerted by the rubber buffer 36, which at an opening movement of the gripping arms 16, which leads to a dangerous condition can lead to actuation of the Switch 40 leads through the torque arm 32.
- the Actuation of the switch 40 can be used to Movement of the coil tongs 10 in total, leading to the collision fixed resistance to stop, and to avoid that the coil 14 tilts further and can fall out.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Manipulator (AREA)
- Transmission Devices (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
- Fig. 1
- eine Seitenansicht einer Ausführungsform der erfindungsgemäßen Greifvorrichtung in Form einer Coilzange mit einem gegriffenen Blechcoil im Fall einer Kollision des Coils mit einem feststehenden Widerstand;
- Fig. 2
- eine Seitenansicht des Antriebs der erfindungsgemäßen Greifvorrichtung; und
- Fig. 3
- eine Draufsicht auf den Antrieb der erfindungsgemäßen Greifvorrichtung ohne Getriebe und Motor.
Claims (6)
- Greifvorrichtung, insbesondere Coilzange (10), mit zumindest zwei Greifelementen (16) und zumindest einem Antrieb (28, 34) zum Öffnen und Schließen der Greifelemente (16) sowie zumindest einem Antrieb zum Bewegen der Greifvorrichtung (10) ingesamt,
dadurch gekennzeichnet, dass
der Antrieb (28, 34) zum Öffnen und Schließen der Greifelemente drehbar gelagert und mittels einer Drehmomentenstütze (32, 38, 42) nachgiebig abgestützt ist, und dass zumindest ein Schalter (40) vorgesehen ist, der durch eine Verdrehung der Drehmomentenstütze (32, 38, 42) betätigbar ist und mit dem Antrieb zum Bewegen der Greifvorrichtung (10) insgesamt gekoppelt ist. - Greifvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
der Schalter (40) zusätzlich mit dem Antrieb (28, 34) zum Öffnen und Schließen der Greifelemente (16) gekoppelt ist. - Greifvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
der Antrieb um die Motorwelle (26) eines Motors (28) drehbar gelagert ist. - Greifvorrichtung nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
die Drehmomentenstütze (32, 38, 42) unmittelbar mit einem nachgiebigen Element (36) in Berührung steht. - Greifvorrichtung nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
der Antrieb ein Zykloidengetriebe (34) aufweist. - Greifvorrichtung nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
als nachgiebiges Element zur Abstützung der Drehmomentenstütze (32, 38, 42) zumindest ein weitgehend konisches Pufferelement (36), vorzugsweise aus Gummi, vorgesehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10200513 | 2002-01-09 | ||
DE2002100513 DE10200513B4 (de) | 2002-01-09 | 2002-01-09 | Greifvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1327600A1 true EP1327600A1 (de) | 2003-07-16 |
EP1327600B1 EP1327600B1 (de) | 2007-11-21 |
Family
ID=7711722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030000045 Expired - Lifetime EP1327600B1 (de) | 2002-01-09 | 2003-01-07 | Greifvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1327600B1 (de) |
CA (1) | CA2416057A1 (de) |
DE (2) | DE10200513B4 (de) |
ES (1) | ES2280146T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20317781U1 (de) * | 2003-11-13 | 2005-03-24 | Norddeutscher Kanalgus Groshan | Anbaugreifvorrichtung |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1822629A (en) * | 1930-04-14 | 1931-09-08 | American Sheet & Tin Plate | Hoisting mechanism |
DE909908C (de) | 1951-12-18 | 1954-04-26 | Siemens Ag | Antrieb, insbesondere fuer Foerderbaender |
US3153555A (en) * | 1961-03-06 | 1964-10-20 | Cullen Friestedt Company | Coil grab |
DE2749603C3 (de) | 1977-11-05 | 1986-07-31 | Kuka Schweissanlagen + Roboter Gmbh, 8900 Augsburg | Handhabungsgerät mit einer Anordnung zum Abschalten seines Antriebes |
US4676560A (en) | 1985-02-08 | 1987-06-30 | Bellheimer Metallwerk Gmbh | Circulating rack |
US5040664A (en) | 1989-04-13 | 1991-08-20 | Gebr. Hennig Gmbh | Shavings conveyor |
US5205599A (en) * | 1992-08-12 | 1993-04-27 | Drafto Corporation | Auxiliary protective coil lifter saddle |
BE1005484A7 (fr) * | 1990-11-22 | 1993-08-10 | Cockerill Sambre Sa | Perfectionnements aux pinces de manutention de bobines. |
DE19619364C2 (de) | 1996-05-14 | 1999-01-07 | Rau Maschbau Gmbh | Förderstrecke |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2555880A (en) * | 1945-05-11 | 1951-06-05 | Co Bartlett & Snow Co | Safety device |
-
2002
- 2002-01-09 DE DE2002100513 patent/DE10200513B4/de not_active Expired - Fee Related
-
2003
- 2003-01-07 ES ES03000045T patent/ES2280146T3/es not_active Expired - Lifetime
- 2003-01-07 DE DE50308625T patent/DE50308625D1/de not_active Expired - Lifetime
- 2003-01-07 EP EP20030000045 patent/EP1327600B1/de not_active Expired - Lifetime
- 2003-01-10 CA CA 2416057 patent/CA2416057A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1822629A (en) * | 1930-04-14 | 1931-09-08 | American Sheet & Tin Plate | Hoisting mechanism |
DE909908C (de) | 1951-12-18 | 1954-04-26 | Siemens Ag | Antrieb, insbesondere fuer Foerderbaender |
US3153555A (en) * | 1961-03-06 | 1964-10-20 | Cullen Friestedt Company | Coil grab |
DE2749603C3 (de) | 1977-11-05 | 1986-07-31 | Kuka Schweissanlagen + Roboter Gmbh, 8900 Augsburg | Handhabungsgerät mit einer Anordnung zum Abschalten seines Antriebes |
US4676560A (en) | 1985-02-08 | 1987-06-30 | Bellheimer Metallwerk Gmbh | Circulating rack |
US5040664A (en) | 1989-04-13 | 1991-08-20 | Gebr. Hennig Gmbh | Shavings conveyor |
BE1005484A7 (fr) * | 1990-11-22 | 1993-08-10 | Cockerill Sambre Sa | Perfectionnements aux pinces de manutention de bobines. |
US5205599A (en) * | 1992-08-12 | 1993-04-27 | Drafto Corporation | Auxiliary protective coil lifter saddle |
DE19619364C2 (de) | 1996-05-14 | 1999-01-07 | Rau Maschbau Gmbh | Förderstrecke |
Also Published As
Publication number | Publication date |
---|---|
ES2280146T3 (es) | 2008-04-16 |
DE10200513B4 (de) | 2005-07-28 |
DE10200513A1 (de) | 2003-07-24 |
DE50308625D1 (de) | 2008-01-03 |
CA2416057A1 (en) | 2003-07-11 |
ES2280146T1 (es) | 2007-09-16 |
EP1327600B1 (de) | 2007-11-21 |
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