EP2258527A2 - Dispositif de réglage d'un support de protection de lame d'une scie murale - Google Patents
Dispositif de réglage d'un support de protection de lame d'une scie murale Download PDFInfo
- Publication number
- EP2258527A2 EP2258527A2 EP20100163764 EP10163764A EP2258527A2 EP 2258527 A2 EP2258527 A2 EP 2258527A2 EP 20100163764 EP20100163764 EP 20100163764 EP 10163764 A EP10163764 A EP 10163764A EP 2258527 A2 EP2258527 A2 EP 2258527A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- saw
- coupling element
- blade
- protection holder
- locked state
- 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
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/044—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs the saw blade being movable on slide ways
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/95—Machine frame
- Y10T83/96—Guard
Definitions
- the present invention relates to a device for adjusting a arranged on a saw arm of a wall saw blade protection holder according to the preamble of patent claim 1 and a sheet protection holder with such adjustment.
- Wall saws are sawing machines for cutting through reinforced or non-reinforced walls, ceilings and floors made of concrete or similar substrates with the aid of rotating saw blades equipped with cutting segments. They are used in civil engineering, renovations and renovations. For example, it may be necessary in demolition or remodeling work to cut existing concrete walls to remove or cut out areas of the concrete walls.
- Known wall saws have a saw blade guard to protect the operator, surrounding the saw blade and preventing contact.
- the saw blade guard is mounted on the saw arm via a blade guard.
- the blade guard is frictionally fixed via a mounting screw, the mounting screw can only be actuated with disassembled saw blade and blade guard. An adjustment of the blade guard relative to the saw arm is therefore only possible if the saw blade and the blade guard are dismantled.
- the object of the present invention is in contrast to simplify the adjustment of the blade protection holder relative to the saw arm.
- the adjustment of the blade guard should be possible in particular when mounted saw blade and blade guard.
- a coupling element is provided in a device for adjusting a blade guard arranged on a saw arm of a wall saw.
- the coupling element is connected to the blade guard at a first end and to the saw arm at a second end in a locked state.
- the coupling element is designed as a toggle lever with a first section, a second section and a third section.
- the toggle lever is preferably designed as a half toggle lever system. In a half toggle lever system, a lever arm is articulated at a fixed point.
- the first section of the toggle lever particularly preferably has a stop element which, in the locked state, cooperates with a stop pin provided on the second section of the toggle lever.
- the stop element and the stop pin are arranged so that the toggle exceeds the dead center by a certain amount, when the stop element abuts the stop pin. Exceeding the dead center position accidental release of the blade guard is excluded.
- the third portion of the toggle lever is designed as a pin, which is positively connected in the locked state with a bore in a gear of the saw arm.
- the gear has a plurality of holes corresponding to certain positions of the blade guard relative to the saw arm.
- the third portion of the toggle lever in the locked state cooperate with a spline.
- the coupling element is preferably converted by means of a control element from a locked state into an unlocked state.
- the operating element can, for example, be designed as a hexagon, which is actuated by means of an open-end wrench. Alternatively, the operating element may be designed as a lever which is manually actuated by the operator.
- the coupling element preferably has an adjusting device for adjusting the clearance between the coupling element and the saw arm.
- the coupling element is preferably arranged in the locked state so that the dead center position of the coupling element is exceeded. Exceeding the dead center position accidental release of the blade guard is excluded.
- a sheet protection holder is provided with an adjusting device according to the invention.
- the blade protector preferably has a guide sleeve.
- the guide sleeve allows a controlled movement of the toggle lever during locking and unlocking and serves to support the forces occurring.
- wall saw 1 comprises a saw head 2, a saw arm 3 with a saw blade 4 and a saw blade 5, an operating device 6 and a fastening device 7 for fixing the wall saw 1.
- the operation of the wall saw 1 via the operating device 6, via a supply line. 8 is connected to the saw head 2.
- the wall saw 1 is fastened to the base 11 with the fastening device 7 consisting of a guide rail 9 and rail feet 10a, 10b .
- the saw head 2 is arranged longitudinally displaceable on the guide rail 9 in the direction of an axis 13 via a guide carriage 12 .
- the saw head 2 comprises a first drive means 14 for rotating the saw blade 4 about a rotation axis 15 and a second drive means 16 for feed control of the guide carriage 12 along the guide rail 9 in the direction of the axis 13.
- the first drive means 14 drives a drive shaft, the rotational movement by means of a in the saw arm 3 arranged transmission device is transmitted to an output shaft (see Fig. 2 ), the saw blade 4 um the rotation axis 15 drives.
- the drive means for rotation of the saw blade 4 and for feed control of the guide carriage 12 may be formed as a common drive means.
- the saw arm 3 is pivotable about a pivot axis 18 .
- Fig. 2 shows the sheet protection holder 17 of Fig. 1 with a device 20 according to the invention for adjusting the blade protection holder 17 in a saw blade 4 facing away from the rear view of the blade protection holder 17th
- the saw blade 4 is driven by means of the drive device 14 about the axis of rotation 15.
- the rotational movement of the drive device 14 is transmitted via a gear in the form of a gear 21 to an output shaft 22 .
- the gear 21 is part of the saw arm 3.
- the output shaft 22 is rotatable about the rotation axis 15.
- the adjusting device 20 comprises a knee lever designed as a coupling element 25 which is mounted at a first end on the blade protection holder 17 in a fixed point and at a second end with a first bore 26 in Gear 21 is engaged.
- FIGS. 3a, b show a section of the blade protection holder 17 of Fig. 2 with the adjusting device 20 according to the invention in a saw blade 4 facing the front view of the blade protection holder 17.
- the coupling element 25 is designed as a toggle lever with a first section 30, a second section 31 and a third section 32 .
- the first and second sections 30, 31 of the toggle lever 25 are adjustably coupled via a first hinge 33 and the second and third sections 31, 32 via a second hinge 34 .
- the first portion 30 of the toggle lever 25 is positively connected in the locked state by means of a control element 35 with the blade protector 17.
- the control element 35 is formed as a hexagon, which is actuated via a fork wrench.
- the control element 35 may be formed as a lever which is manually operated by the operator.
- the third portion 32 of the toggle lever 25 is in the form of a bolt and engages in the first bore 26, which is arranged in a radial surface 36 of the gear 21, a.
- the gear 21 has in the radial surface 36 next to the first bore 26 has a second and third bore 37, 38 , into which the bolt 32 of the toggle lever 25 can engage.
- the bolt 32 is in the execution of Fig. 3a in engagement with the first bore 26, which corresponds to a 0 ° position of the blade protection holder 17.
- the second and third bores 37, 38 correspond to, for example, a + 45 ° position and a - 45 ° position of the blade protection holder 17 relative to the saw arm 3.
- In the radial surface 36 of the gear 21 further holes may be provided, the defined positions of the blade guard 17 relative to the saw arm 3 correspond.
- the toggle lever 25 is unlocked.
- the operating element 35 is moved in the direction of the arrow 39 about the rotation axis 40, which runs perpendicular to the plane of the drawing.
- the toggle lever 25 is released and the first portion 30 of the toggle lever 25 moves in the in Fig. 3b shown position.
- the knee joint buckles and pulls the bolt 32 out of the first bore 26 of the gear 21.
- the blade protection holder 17 is pivotable about the axis of rotation 15 and can now be pivoted to the desired position. Once the bolt 32 of the bell crank 25 is in the desired position, the toggle lever 25 is closed by turning the control element 35 in the direction of the arrow 41 and the bolt 32 is in engagement with the bore in the gear 21st
- the first portion 30 of the toggle lever 25 has at a second portion 31 facing the end of a stop element 42 in the form of a stop finger.
- the stop finger 42 cooperates with a stop pin 43 of the second portion 31.
- the stop finger 42 abuts on the stop pin 43 and further rotation of the first portion 30 in the direction 41 is blocked by the stop pin 43.
- the stop element 42 and the stop pin 43 are arranged so that the toggle lever 25 has exceeded the dead center position by a certain amount when the stopper member 42 abuts against the stop pin 43.
- Exceeding the dead center position accidental release of the blade protection holder 17 is excluded by an insufficient fixing a fastening screw in the adjusting device 20 according to the invention.
- Exceeding the dead center is referred to as self-locking or latching.
- the self-locking in the locked state prevents opening of the toggle lever 25 by the machining forces.
- the blade protection holder 17 has a guide sleeve 44 , which guides the bolt 32 of the toggle lever 25.
- the guide sleeve 44 allows a controlled movement of the bolt 32 during the locking and unlocking of the toggle lever 25 and serves to support the occurring Forces.
- the bolt 32 has a sealing element 45 .
- the toggle lever 25 has an adjusting device 46 for adjusting the clearance between the bolt 32 and the bore in the form of an eccentric. With the help of the adjusting device 46, the play or the bias of the toggle lever 25 is adjusted so that the bolt 32 is positively arranged in the locked state in the bore 26, 37, 38 and in the unlocked state from the bore 26, 37, 38 slides out so that the sheet protection holder 17 can be moved to the desired position.
- FIGS. 3a, b illustrated embodiment of the blade guard holder 17 is positively connected via the bolt 32 which engages in a bore 26, 37, 28 in the gear 21, connected to the saw arm 3.
- the radial surface 36 of the gear 21 may be provided with a toothing, in which the third portion 32 of the bell crank 25 engages.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910026638 DE102009026638A1 (de) | 2009-06-02 | 2009-06-02 | Vorrichtung zum Verstellen eines Blattschutzhalters einer Wandsäge |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2258527A2 true EP2258527A2 (fr) | 2010-12-08 |
EP2258527A3 EP2258527A3 (fr) | 2011-08-17 |
EP2258527B1 EP2258527B1 (fr) | 2012-08-22 |
Family
ID=42668103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100163764 Active EP2258527B1 (fr) | 2009-06-02 | 2010-05-25 | Scie murale avec dispositif de réglage d'un support de protection de lame |
Country Status (3)
Country | Link |
---|---|
US (1) | US8833357B2 (fr) |
EP (1) | EP2258527B1 (fr) |
DE (1) | DE102009026638A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103097093A (zh) * | 2010-09-01 | 2013-05-08 | 胡斯华纳有限公司 | 用于锯的锯片防护装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2993013A1 (fr) * | 2014-09-08 | 2016-03-09 | Hilti Aktiengesellschaft | Procédé de commande d'un système de scie murale par sciage en long |
EP2993009A1 (fr) * | 2014-09-08 | 2016-03-09 | HILTI Aktiengesellschaft | Procédé de commande d'un système de scie murale par sciage en long |
EP2993014A1 (fr) * | 2014-09-08 | 2016-03-09 | HILTI Aktiengesellschaft | Procédé de commande d'un système de scie murale par sciage en long |
EP3827952B1 (fr) | 2019-11-29 | 2022-08-17 | EURODIMA GmbH & Co KG | Scie murale avec guide pour protège-lame de scie circulaire |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3722497A (en) * | 1971-04-08 | 1973-03-27 | Continental Drilling Co | Wall saw |
BE795427A (fr) * | 1972-02-22 | 1973-05-29 | Continental Drilling Co | Assemblage de scie murale perfectionne |
US3914905A (en) * | 1974-12-23 | 1975-10-28 | Warren W Waters | Abrading device |
CA1047895A (fr) * | 1975-08-19 | 1979-02-06 | L. Blair Hotchen | Materiel rotatif de tronconnement |
DE7837368U1 (de) * | 1978-12-16 | 1980-05-22 | Chr. Eisele Maschinenfabrik Gmbh & Co Kg, 7316 Koengen | Schutzvorrichtung fuer das kreissaegeblatt von kreissaegemaschinen mit vertikal beweglichem saegeaggregat |
US4672746A (en) * | 1986-05-08 | 1987-06-16 | Christopher Zeilenga | Protective mechanism for circular saws |
SE462961B (sv) * | 1987-01-23 | 1990-09-24 | Anders Johnsen | Saagmaskin |
SE462960B (sv) * | 1987-01-23 | 1990-09-24 | Anders Johnsen | Saagmaskin |
FR2624049A1 (fr) * | 1987-12-03 | 1989-06-09 | Brunelle Jean Pierre | Machine portative legere a disque de coupe pour carrelages et tous materiaux de revetements minces |
US4848001A (en) * | 1988-03-14 | 1989-07-18 | Textron Inc. | Blade guard system for rotary saws |
DE4007449C1 (fr) * | 1990-03-09 | 1992-01-16 | Keuro Maschinenbau Gmbh & Co Kg, 7590 Achern, De | |
JPH0442320U (fr) * | 1990-07-31 | 1992-04-10 | ||
US5140754A (en) * | 1991-09-24 | 1992-08-25 | Textron Inc. | Power tool protective hood positioning system and method of manufacturing the same |
US5305729A (en) * | 1992-02-14 | 1994-04-26 | Chiuminatta Edward R | Method and apparatus for cutting wet concrete |
US5287779A (en) * | 1993-03-15 | 1994-02-22 | Emerson Electric Co. | Radial saw safety guards and barriers |
GB9314163D0 (en) * | 1993-07-08 | 1993-08-18 | Black & Decker Inc | Chop/table saw arrangement |
GB9314165D0 (en) * | 1993-07-08 | 1993-08-18 | Black & Decker Inc | Chop/table saw with parallelogram arrangement |
US5564408A (en) * | 1993-12-20 | 1996-10-15 | Bassols; Luis | Pavement treatment method and apparatus |
US5680854A (en) * | 1995-01-09 | 1997-10-28 | Diamant Boart, Inc. | Self propelled saw |
US5588418A (en) * | 1995-01-26 | 1996-12-31 | Boart Longyear Company | Saw assembly with handle-actuated guide mechanism |
US6971297B1 (en) * | 1995-10-10 | 2005-12-06 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
DE19601522A1 (de) * | 1996-01-17 | 1997-07-24 | Hilti Ag | Wandsäge und Sägeblatt |
US5832614A (en) * | 1997-05-20 | 1998-11-10 | S-B Power Tool Company | Remote lower guard lift lever mechanism for circular saws |
US5921228A (en) * | 1997-05-29 | 1999-07-13 | Mixer Systems, Inc. | Multi-directional, self-propelled saw for cutting concrete slabs |
US6170478B1 (en) * | 1998-10-15 | 2001-01-09 | Richard S. Gorder | Process and apparatus for cutting a chamfer in concrete |
US7114494B2 (en) * | 1999-09-17 | 2006-10-03 | Husqvarna Professional Outdoor Products Inc. | Fluid pickup assembly and blade guard for a pavement treatment apparatus |
US8079295B2 (en) * | 2008-06-20 | 2011-12-20 | Sd3, Llc | Table saw blade guards and blade guard assemblies including lateral blade guards, and table saws including the same |
US7353737B2 (en) * | 2001-08-13 | 2008-04-08 | Sd3, Llc | Miter saw with improved safety system |
US20060201492A1 (en) * | 2002-03-18 | 2006-09-14 | Anthony Baratta | Methods and apparatus for movable machining tools including for wall saws |
US7757684B2 (en) * | 2002-03-18 | 2010-07-20 | Electrolux Professional Outdoor Products, Inc. | Movable machinery, including pavement working apparatus and methods of making |
US6955167B2 (en) * | 2002-03-18 | 2005-10-18 | Electrolux Professional Outdoor Products, Inc. | Pavement working apparatus and methods of making |
US6648742B1 (en) * | 2002-06-04 | 2003-11-18 | Theodore R. Segiel Jr. | Dust director portable vacuum guard |
US8157619B2 (en) * | 2005-06-27 | 2012-04-17 | Husqvarna Professional Outdoor Products Inc. | Tools and methods for making and using tools, blades and methods of making and using blades |
US7437981B2 (en) * | 2005-11-21 | 2008-10-21 | Robert Bosch Gmbh | Modular guard system and apparatus for a power saw |
US20070163412A1 (en) * | 2006-01-15 | 2007-07-19 | Anthony Baratta | Methods and apparatus for movable machining tools, including for wall saws |
DE102009026637A1 (de) * | 2009-06-02 | 2010-12-16 | Hilti Aktiengesellschaft | Schienengeführtes Werkzeuggerät |
US9254580B2 (en) * | 2009-09-15 | 2016-02-09 | Robert Bosch Gmbh | Guard system for a power saw |
-
2009
- 2009-06-02 DE DE200910026638 patent/DE102009026638A1/de not_active Ceased
-
2010
- 2010-05-25 EP EP20100163764 patent/EP2258527B1/fr active Active
- 2010-06-01 US US12/802,180 patent/US8833357B2/en active Active
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103097093A (zh) * | 2010-09-01 | 2013-05-08 | 胡斯华纳有限公司 | 用于锯的锯片防护装置 |
CN103097093B (zh) * | 2010-09-01 | 2016-02-03 | 胡斯华纳有限公司 | 用于圆锯锯片的锯片防护装置以及墙锯 |
Also Published As
Publication number | Publication date |
---|---|
US8833357B2 (en) | 2014-09-16 |
EP2258527B1 (fr) | 2012-08-22 |
EP2258527A3 (fr) | 2011-08-17 |
US20110203564A1 (en) | 2011-08-25 |
DE102009026638A1 (de) | 2010-12-16 |
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