EP2186600B1 - Dispositif de ponçage de surface, notamment un dispositif de ponçage de béton - Google Patents

Dispositif de ponçage de surface, notamment un dispositif de ponçage de béton Download PDF

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Publication number
EP2186600B1
EP2186600B1 EP20080019748 EP08019748A EP2186600B1 EP 2186600 B1 EP2186600 B1 EP 2186600B1 EP 20080019748 EP20080019748 EP 20080019748 EP 08019748 A EP08019748 A EP 08019748A EP 2186600 B1 EP2186600 B1 EP 2186600B1
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EP
European Patent Office
Prior art keywords
hood
inner sleeve
suction
surface grinder
grinder according
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.)
Expired - Fee Related
Application number
EP20080019748
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German (de)
English (en)
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EP2186600A1 (fr
Inventor
Herbert Buchberger
Alexander Essing
Ingo VIEHBÖCK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Collomix Ruehr und Mischgeraete GmbH
Original Assignee
Collomix Ruehr und Mischgeraete GmbH
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Collomix Ruehr und Mischgeraete GmbH filed Critical Collomix Ruehr und Mischgeraete GmbH
Priority to EP20080019748 priority Critical patent/EP2186600B1/fr
Publication of EP2186600A1 publication Critical patent/EP2186600A1/fr
Application granted granted Critical
Publication of EP2186600B1 publication Critical patent/EP2186600B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools

Definitions

  • the invention relates to a surface grinder, in particular a concrete grinder according to the preamble of claim 1.
  • a known generic concrete grinder ( CH 694 756 A5 ) is mounted in a Getriebehals a drive shaft to which a concrete grinding wheel is detachably connected.
  • the concrete grinder has a funnel-shaped suction hood, which covers the grinding wheel from above and engages over the edge with a protective ring.
  • the suction hood is fastened in the region of a central opening for the gear neck by means of a holding device.
  • the known concrete grinder is designed as a hand-held angle grinder with a motor housing for an electric motor and an attached angle gear, which has the gear neck and the central drive shaft with an end-side threaded pin for mounting and holding the concrete grinding wheel by means of a clamping nut.
  • a suction device can be connected to the suction hood via a suction pipe and the grinding dust is extracted by suction.
  • the suction hood also has a protective function for a user by retaining abraded grit.
  • the funnel-shaped suction hood consists here in one piece of a funnel neck and a hood bell part formed thereon, wherein the suction hood with the funnel part is fixedly screwed to the gear neck.
  • the DE 89 14 346 U1 describes a motor driven to a rotational movement tool with a sleeve-shaped, longitudinally adjustable suction hood.
  • the suction hood has at the same time in the longitudinal and circumferential direction extending slots, which are guided on projections formed by screws on a drive unit.
  • a grinding hand tool machine is described with a hollow cylindrical guard.
  • the protective hood is designed in two parts with a substantially flat lid and a jacket.
  • the jacket is axially displaceable and fixed on the lid.
  • the protective cover is not used here as a suction hood.
  • the WO 2008/033377 A2 discloses a grinding tool in which a brush ring assembly is height adjustable attached to a support portion of the tool head.
  • the object of the invention is to develop a generic concrete grinder so that an effective extraction of sanding dust and sanding material can be ensured regardless of the degree of wear of the grinding elements of the grinding wheel.
  • a clampable clamping ring surrounds the funnel neck for fixing the respective height adjustment.
  • a distance compensation according to the wear of the grinding elements can be performed by a height adjustment of the suction hood. It is thus possible, a minimum distance of about 1 to 3 mm, preferably of about 2 mm, between the free edge of a protective ring of the suction hood, which engages over the concrete grinding wheel edge and adjust a grinding surface, which with increasing wear of the grinding elements or optionally at Replacement by a new grinding wheel is adjustable.
  • the distance of the guard ring edge to the grinding surface is thus on the one hand chosen so large that the required air intake is ensured by the environment for the suction and on the other hand by the relatively small gap gap no grinding dust from the hood penetrates to the outside.
  • the funnel neck for realizing the height adjustment of the exhaust hood from an inner sleeve which is rotatably supported on Geretehals and with an engaging nose as a first guide element directly or indirectly in a helically mounted spiral groove on Geretehals as associated second guide element intervenes.
  • This can be done easily and accurately with a screwing by rotation of the inner sleeve relative to the Geretehals a continuous height adjustment for distance compensation at a wear of grinding elements.
  • a certain height adjustment can then be fixed with the inner sleeve comprehensive clamping ring.
  • the engagement nose is formed directly on the inner sleeve, this and / or the inner surface of the inner sleeve for fixing by the clamping ring on the gear neck must be pressed, for which it may be necessary to perform the inner sleeve partially slotted.
  • the engagement nose is designed as a radially inwardly facing clamping lug on the clamping ring.
  • this clamping lug engages through an associated slot-shaped recess of the inner sleeve into the spiral groove on the gear neck.
  • the engagement nose can thus act in a further function when contracting the clamping ring as a clamping nose, which exerts a clamping fit at the bottom of the spiral groove.
  • the inner sleeve is formed as part of the height adjustment with the screw mechanism of engaging nose and spiral groove integral with the downwardly adjacent hood bell part, this twists with a ffervermosung the inner sleeve and thus possibly also connected to this hood part suction tube, which then in the different rotational positions the inner sleeve or the associated height settings projecting in different angular positions on the concrete grinder. This can interfere with handling.
  • the hood bell part and an attached suction pipe it is proposed with claim 4 to form the suction hood in several parts, such that the inner sleeve is rotatably received as funnel neck in the central passage opening of a subsequent hood bell part of the suction hood.
  • the passage opening edge of the hood bell part is held between a lower radially projecting support flange of the inner sleeve and an upwardly spaced spring ring, preferably a snap ring on the inner sleeve, whereby a simple running pivot bearing between the inner sleeve and the hood bell part is formed.
  • a protective disk is used between the spring ring and the passage opening edge of the hood bell part to improve the ease of pivoting and as protection against scratching.
  • the hood bell part and / or an adjoining suction tube has an upwardly projecting extension as Torque pick-up, which engages in a height-displaceable in a respect to the transmission neck fixed torque support.
  • a suction tube is held non-rotatably on the concrete grinder.
  • forces are supported on the suction tube by a connected suction hose.
  • the clamping ring is arranged above the snap ring.
  • a height adjustment is easy to carry out when the inner sleeve is rotatable together with the clamping ring, in particular when the engagement nose is formed as a clamping lug on the clamping ring and engages through the slot-shaped recess of the inner sleeve into the spiral groove.
  • the engagement nose is formed as a clamping lug on the clamping ring and engages through the slot-shaped recess of the inner sleeve into the spiral groove.
  • at least one radially inwardly directed driving lug is attached to the clamping ring, which engages in an associated driving opening on the inner sleeve.
  • a respective driver nose can be attached to the dividing edge of the clamping ring as a vertical web and the driver opening is designed as an associated vertical slot in the inner sleeve.
  • a horizontally encircling engagement groove is formed according to claim 6 on the outer side of the inner sleeve into which engages the clamping ring with a correspondingly associated inner web.
  • the clamping ring may be designed in the manner of a clamp, wherein in each case at the dividing edge region, a radially projecting clamping block is attached.
  • a tangential clamping screw which can be manually operated via a knurling wheel is guided.
  • a clamping screw could also be a known tension lock be provided.
  • the above height adjustment of the suction hood for wear compensation of the grinding elements can be used in different constructed concrete grinders.
  • This technique is particularly well suited according to claim 8 for a concrete grinder in the form of a hand-held angle grinder, in particular a concrete floor grinder with a tubular, usable as a handle motor housing for an electric motor and an angle gear connected to the Geretehals.
  • the central drive shaft is housed in pivot bearings with an end-side threaded pin for attaching the concrete grinding wheel and for mounting by means of a clamping screw.
  • a suction pipe with the suction hood in particular with a hood bell part connected so that it extends with a hand engagement distance below and parallel to the motor housing and expedient for ergonomic handling about the length of the motor housing.
  • a torque support for the non-rotatable hood bell part or the suction tube is executed in a structurally suitable design as a housing-fixed, from the motor housing downwardly facing and transversely extending U-support bracket with an insertion for integrally formed on the hood bell part or the suction torque transducer.
  • the suction tube is formed in two parts, wherein a lower shell is integrally formed on the suction hood, in particular on the hood bell part.
  • the upper shell is as a separately manufactured component on the lower shell put on and attached, in particular clipped.
  • a transversely extending bow handle which is arranged above the angle gear about a transverse axis pivotable and fixable so that the handle portion is in a forward pivoted position on a front angular segment of the hood and is pivoted in a réellegeschwenkten position from this area to the rear and lies approximately above the angle gear.
  • the bow handle is U-shaped and open on one side with a longer U-leg as a handle part, wherein the shorter U-leg is selectively connected to the left or right of the engine or transmission housing pivotable and lockable.
  • This provides an ergonomically favorable grip shape for both left-handed and right-handed users.
  • a forwardly facing hood segment part of the suction hood in particular a hood bell part for releasing an underlying grinding wheel segment is designed to be pivotable in a horizontal plane.
  • the hood segment part with a hood segment ring part, the inner sleeve pivotally surrounds.
  • the hood segment part covers a segment free space of the suction hood from above and in the open position, the hood segment part is pivoted out of the region of the Segementokraums, so that this, and thus a rotating in Segementokrarum grinding wheel edge area are released.
  • the hood segment part is thus held captive on the suction hood or the inner sleeve and can be pivoted without tools in its respective functional position.
  • the hood segment part is then held in both the closed position and in the open position by überdrückbare latching connections.
  • Fig. 1 to 3 views of the complete concrete grinder 1 are shown, which is designed as a hand-held angle grinder, in particular for concrete floor grinding work with a tubular, usable as a handle motor housing 2, in which an electric motor is received, which can be switched on and off with a switch 3.
  • a funnel-shaped suction hood 9 is fixed in the region of a central passage opening for the transmission neck 5, wherein the holding device has a height adjustment device 10, which will be described in detail below.
  • the suction hood 9 is designed in several parts and consists in particular of an inner sleeve 11, which comprises a clamping ring 12 and a hood bell part 13.
  • the inner sleeve 11 is rotatably mounted in the hood bell part 13, wherein the hood bell part 13, the grinding wheel 8 engages over the edge with a guard ring 14.
  • the cowl bell part 13 has a forwardly directed portion as a segment clearance 15, which can be covered by a forwardly facing hood segment part 16.
  • the hood segment part 16 is pivotably held by a hood segment ring part 17 on the inner sleeve 11.
  • the segmental space 15 is covered and the suction hood 9 is closed as a whole.
  • the area of the segment free space 15 is released ( Fig. 2 ), so that there protrudes a portion 18 of the rotating grinding wheel 8, for example, for grinding work on the ground in a corner region to a side wall.
  • the hood segment part 16 is set and held in two functional positions.
  • the functional positions of the hood segment part 16 on the suction hood 9 are also clear from the Fig. 4 and 5 can be seen, which show a view from below of the suction hood 9 with mounted grinding wheel 8.
  • the grinding wheel 8 is fitted with a central opening on the threaded pin 7 of the drive shaft 6 and held with a clamping nut 20.
  • the grinding wheel 8 consists of a convex towards the center (see Fig. 6 ) Projecting base disk part 29 of the edge side and at a center offset circle segment-like grinding elements 22 in the manner of diamond grinding stones to the concrete grinding plane out with a certain grinding element height.
  • 8 offset flow openings 23 are arranged for the extraction of sanding dust in the grinding wheel.
  • a suction pipe 24 is connected, which extends below and parallel to the motor housing 2.
  • the suction tube 24 is formed in two parts, wherein a lower shell 25 is integrally formed on the hood bell part 13 and a separate upper shell 26 is clipped onto the lower shell 25.
  • a connection clamping ring 27 is provided at the end of the suction pipe 24, which also holds the upper shell 26 and lower shell 25 of the suction pipe 24 together.
  • a U-shaped bow handle 28 Transverse to the motor housing 2 extends a U-shaped bow handle 28 having a longer U-leg as a handle portion 29, wherein the shorter U-leg 30 is either left or right on the motor housing 2 or slightly offset to the front of the transmission housing pivotally connected and lockable.
  • the handle member 29 is pivoted forward in a working position, which is particularly suitable for grinding work with a closed hood segment part 16.
  • the handle member 29 can be pivoted upward, as in Fig. 3 shown, so that a hand on the handle 29 in a corner area does not abut against a side wall.
  • radially protruding clamping blocks 38, 39 are formed on the clamping ring 12, through which a clamping screw 41 which can be manually operated via a knurled wheel 40 is guided.
  • a horizontally encircling engagement groove 42 is mounted, in which engages an integrally formed on the clamping ring 12 inner web 43.
  • a radially inwardly projecting clamping nose 44 is formed, which engages through an associated slot-shaped recess 45 of the inner sleeve into a spiral groove 46 on the gear neck 5.
  • the clamping nose 44 and the slot-shaped recess 45 are also inclined according to the inclination of the spiral groove 46.
  • an upwardly projecting extension is formed as Drehmomentetzillon 47 in the region of the connection point of the suction tube 24, which is height-displaceably held in an insertion 48 of a housing-fixed, from the motor housing 2 facing downwards and transversely extending U-support bracket 49.
  • the suction hood 9 and thus also the torque transducer 47 is shown in the insertion opening 48 of the U-support bracket 49 in the lowermost position in which the guard ring 14, the grinding elements 22 of the grinding wheel 8 are covered.
  • the suction hood 9 and thus the torque sensor 47 is shown in the uppermost setting position, in which, in the case of a grinding wheel with new or slightly worn grinding elements 22, they protrude below the guard ring 14. Due to the easy-to-use height adjustment device 10, the above-explained gap setting of about 2 mm can be set and fixed for optimum grinding dust extraction between these two extreme positions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (14)

  1. Dispositif de ponçage de surface, notamment dispositif de ponçage de béton,
    avec un arbre d'entraînement (6) logé dans un prolongement de carter (5) et auquel est raccordé de manière amovible un disque de ponçage béton (8), et
    avec une hotte d'aspiration (9) en forme de trémie, qui couvre le disque de ponçage béton (8) et vient en prise par-dessus les bords avec une bague de protection (14), dans lequel la hotte d'aspiration (9) est fixée au niveau d'une ouverture de passage centrale pour le prolongement de carter (5) au moyen d'un dispositif de retenue,
    dans lequel le dispositif de retenue présente un dispositif de réglage de la hauteur (10) avec lequel la hotte d'aspiration (9) peut être fixée et réglée en hauteur de façon guidée par rapport au prolongement du carter (5), directement ou indirectement, dans le sens axial de l'arbre d'entraînement (6),
    dans lequel un col de trémie de la hotte d'aspiration (9) comporte comme ouverture de passage centrale le prolongement du carter (5) et y est guidé de façon réglable en hauteur par des éléments de guidage (44, 46) respectivement associés, s'engrenant les uns dans les autres,
    caractérisé en ce que
    une bague de serrage (12) serrable entoure le col de trémie pour une fixation du réglage en hauteur.
  2. Dispositif de ponçage de surface selon la revendication 1, caractérisé en ce que pour réaliser le dispositif de réglage de la hauteur (10), le col de trémie de la hotte d'aspiration (9) se compose d'une douille intérieure (11) qui est maintenue de manière rotative au niveau du prolongement de carter (5) et qui vient en prise avec un ergot d'engagement (44) en tant qu'élément de guidage directement ou indirectement dans une rainure hélicoïdale (46) en forme d'hélice en tant que deuxième élément de guidage associé au niveau du prolongement de carter (5), de telle sorte qu'une rotation de la douille intérieure (11) entraîne un réglage de la hauteur par rapport au prolongement de carter (5), qui peut être fixée par la bague de serrage (12) contenant la douille intérieure (11).
  3. Dispositif de ponçage de surface selon la revendication 2, caractérisé en ce que l'ergot d'engagement est réalisé au niveau de la bague de serrage sous forme d'ergot de serrage dirigé radialement vers l'intérieur, qui vient en prise à travers un évidement associé en forme de fente de la douille intérieure dans la rainure hélicoïdale au niveau du prolongement de carter, la bague de serrage étant montée au-dessus d'une bague Seeger.
  4. Dispositif de ponçage de surface selon la revendication 2 ou 3, caractérisé en ce que la douille intérieure (11) est reçue de manière rotative en tant que prolongement de carter dans l'ouverture de passage centrale d'une partie de hotte en forme de cloche (13) raccordée de la hotte d'aspiration (9), le bord de l'ouverture de passage de la partie de hotte en forme de cloche (13) étant maintenu entre une bride d'appui (31) inférieure en saillie radiale de la douille intérieure (11) et une rondelle ressort (34) espacée vers le haut à la manière d'une bague Seeger au niveau de la douille intérieure (11) de préférence avec une rondelle de protection (33) intermédiaire, et en ce que la partie de hotte en forme de cloche (13) et/ou un tube d'aspiration (24) qui s'y raccorde présente un prolongement dépassant vers le haut en tant qu' absorbeur de couple (47) qui vient en prise de manière réglable en hauteur dans un support de couple (48, 49) fixe par rapport au prolongement de carter (5) si bien que lors d'un vissage de la douille intérieure (11) et du réglage en hauteur de la hotte d'aspiration (9), la partie de hotte en forme de cloche (13) et le cas échéant le tube d'aspiration (24) est maintenu de manière non rotative.
  5. Dispositif de ponçage de surface selon la revendication 3 ou 4, caractérisé en ce qu'au moins un ergot d'entraînement (35, 36) dirigé radialement vers l'intérieur qui vient en prise dans une ouverture d'entraînement (37) associée au niveau de la douille intérieure (11) est monté au niveau de la bague de serrage (12), de préférence respectivement un ergot d'entraînement (35, 36) étant monté au niveau du bord de séparation de la bague de serrage (12) sous forme de nervure verticale et l'ouverture d'entraînement (37) est une fente verticale associée dans la douille intérieure (11).
  6. Dispositif de ponçage de surface selon la revendication 5, caractérisé en ce qu'une rainure d'engagement (42) horizontalement circulaire est placée sur le côté extérieur de la douille intérieure (11) et en ce qu'une nervure intérieure (43) associée de manière correspondante est formée sur la bague de serrage (12).
  7. Dispositif de ponçage de surface selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un bloc de serrage (38, 39) en saillie radiale est monté respectivement au niveau de la zone de bord de séparation de la bague de serrage (12) et en ce qu'une vis de serrage (41) tangentielle à commande manuelle par le biais d'une molette (40) est guidée par les blocs de serrage (38, 39).
  8. Dispositif de ponçage de surface selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dispositif de ponçage de béton est réalisé sous forme de dispositif de ponçage d'angle manuel, en particulier sous forme de dispositif de ponçage de dalle de béton, avec un carter-moteur (2) tubulaire utilisable comme poignée pour un moteur électrique et avec un renvoi d'angle (4) qui y est raccordé, lequel présente le prolongement de carter (5) et l'arbre d'entraînement central (6) avec une goupille filetée (7) côté extrémité pour emmancher le disque de ponçage béton (8) et pour le maintenir au moyen d'un écrou de serrage (20).
  9. Dispositif de ponçage de surface selon la revendication 8, caractérisé en ce qu'un tube d'aspiration (24) est relié à la hotte d'aspiration (9), en particulier à une partie de hotte en forme de cloche (13), qui s'étend en-dessous et parallèlement au carter-moteur (2) à une distance de prise en main, un support de couple sous forme d'étrier d'appui en U (49) fixé au carter, dirigé du carter-moteur (2) vers le bas et s'étendant transversalement est monté le cas échéant avec une ouverture d'insertion (48) pour l'absorbeur de couple (47).
  10. Dispositif de ponçage de surface selon la revendication 9, caractérisé en ce que le tube d'aspiration (24) est réalisé en deux parties, dans lequel une coquille inférieure (25) est moulée d'un seul tenant sur la hotte d'aspiration (9), en particulier sur une partie de hotte en forme de cloche (13), et une coquille supérieure (26) est montée dessus, en particulier clipsée, en tant qu'élément fabriqué séparément, dans lequel une bague de serrage de raccordement (27) est prévue côté extrémité au niveau du tube d'aspiration de préférence pour un raccordement de tuyau d'aspiration.
  11. Dispositif de ponçage de surface selon l'une quelconque des revendications 8 à 10, caractérisé en ce qu'une poignée en forme d'étrier (28) s'étendant transversalement qui est disposée de façon à pouvoir être fixée et pivoter autour d'un axe transversal au-dessus du renvoi d'angle de telle sorte que l'élément de préhension (29) se trouve dans une position pivotée vers l'avant au-dessus d'un segment d'angle avant de la hotte d'aspiration (9) et est pivoté de cette zone vers l'arrière dans une position pivotée vers l'arrière et se trouve à peu près au-dessus du renvoi d'angle (4), est prévue en plus du carter-moteur (2) comme autre poignée.
  12. Dispositif de ponçage de surface selon la revendication 11, caractérisé en ce que la poignée en forme d'étrier (28) est réalisée en forme de U avec une branche longue du U comme élément de préhension (29), la branche courte du U (30) étant raccordée au choix à gauche ou à droite au carter-moteur ou carter de transmission (2) de manière pivotante et arrêtable.
  13. Dispositif de ponçage de surface selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'une partie de segment de hotte (16), dirigée vers l'avant, de la hotte d'aspiration (9), en particulier d'une partie de hotte en forme de cloche (13) est réalisée de manière pivotante et captive pour libérer un segment de disque de ponçage sous-jacent.
  14. Dispositif de ponçage de surface selon la revendication 13, caractérisé en ce que la partie de segment de hotte (16) avec une partie annulaire de segment de hotte (17) entoure la douille intérieure (11) de manière pivotante et dans la position fermée couvre par le haut un espace libre de segment (15) de la hotte d'aspiration (9) et en ce que dans la position ouverte, la partie de segment de hotte (17) est pivotée hors de la zone de l'espace libre de segment (15), la partie de segment de hotte étant maintenue dans la position fermée et dans la position ouverte par des assemblages par encliquetage (19) enclenchables.
EP20080019748 2008-11-12 2008-11-12 Dispositif de ponçage de surface, notamment un dispositif de ponçage de béton Expired - Fee Related EP2186600B1 (fr)

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EP20080019748 EP2186600B1 (fr) 2008-11-12 2008-11-12 Dispositif de ponçage de surface, notamment un dispositif de ponçage de béton

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EP20080019748 EP2186600B1 (fr) 2008-11-12 2008-11-12 Dispositif de ponçage de surface, notamment un dispositif de ponçage de béton

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EP2186600A1 EP2186600A1 (fr) 2010-05-19
EP2186600B1 true EP2186600B1 (fr) 2011-11-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN108225870B (zh) * 2018-04-23 2024-03-01 郑州大学 一种用于混凝土的磨粉装置
GB2604622A (en) * 2021-03-10 2022-09-14 Swisslogo Ag A guard for a rotatable wheel of a power tool
CN114346792B (zh) * 2022-01-19 2022-09-20 杭州怡田工具制造有限公司 一种粗抛机及粗抛装置
CN118046154B (zh) * 2024-04-16 2024-08-06 四川交通职业技术学院 一种桥梁施工用焊接装置及方法

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DE102012001925A1 (de) 2012-02-02 2013-08-08 Schleif- und Fräswerkzeuge Höhn Ltd. & Co. KG Oberflächenschleifer, insbesondere Betonschleifer
CN108698200A (zh) * 2016-02-17 2018-10-23 喜利得股份公司 角磨机防尘罩

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