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EP0619979B1 - Machine d'entretien des sols - Google Patents

Machine d'entretien des sols Download PDF

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Publication number
EP0619979B1
EP0619979B1 EP94101437A EP94101437A EP0619979B1 EP 0619979 B1 EP0619979 B1 EP 0619979B1 EP 94101437 A EP94101437 A EP 94101437A EP 94101437 A EP94101437 A EP 94101437A EP 0619979 B1 EP0619979 B1 EP 0619979B1
Authority
EP
European Patent Office
Prior art keywords
holding part
machine according
floor finishing
floor
finishing machine
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 - Lifetime
Application number
EP94101437A
Other languages
German (de)
English (en)
Other versions
EP0619979A1 (fr
Inventor
Eugen Lägler
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.)
Lagler Eugen GmbH
Eugen Lagler GmbH
Original Assignee
Lagler Eugen GmbH
Eugen Lagler 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.)
Filing date
Publication date
Application filed by Lagler Eugen GmbH, Eugen Lagler GmbH filed Critical Lagler Eugen GmbH
Publication of EP0619979A1 publication Critical patent/EP0619979A1/fr
Application granted granted Critical
Publication of EP0619979B1 publication Critical patent/EP0619979B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/10—Floor surfacing or polishing machines motor-driven
    • A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
    • A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
    • A47L11/162—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes having only a single disc brush
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4038—Disk shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4058—Movement of the tools or the like perpendicular to the cleaning surface for adjusting the height of the tool

Definitions

  • the invention relates to a tillage machine for surface treatment of floors, in particular a floor grinding machine, with at least one processing plate on the underside of the machine, which is arranged coaxially to a holding part that can be driven by a motor to make a rotational movement, the holding part being located at a central support point under a swivel bearing of the processing plate that resembles a ball joint supports at least part of the machine weight via a support surface on the holding part side and a support surface on the processing plate side on the processing plate and the processing plate is located radially outside the supporting point opposite the holding part and is attached to the holding part in a rotationally fixed manner at several fixing points distributed around the supporting point with axial movement play.
  • Such a machine can be used for grinding and brushing floors, in particular wooden floors such as parquet floors, for removing any parts adhering to the floor, for example Use carpet and adhesive residues, for polishing floors, etc.
  • Such machines regularly have a chassis so that they can be moved across the floor by pushing or pulling.
  • the processing plate and the running wheels are coordinated with one another in terms of their height so that the processing means attached to the underside of the plate rests on the floor and is thereby loaded by the machine weight, insofar as this is not absorbed by the chassis.
  • the two support surfaces have a spherical shape that fits into one another.
  • a rolling edge arranged on the holding part rests on the edge of an opening of the processing plate.
  • the two support surfaces slide against one another, so that frictional forces occur. These frictional forces are not defined and can be greatly increased by dust deposits. If the machine stops for a while, there is even a risk that the two support surfaces will cake, so to speak.
  • processing blocks distributed in the circumferential direction and resiliently mounted in the axial direction are arranged on the processing plate, which sit on the floor and carry out the tillage.
  • the present invention has for its object to provide a tillage machine of the type mentioned, which delivers a satisfactory work result even on undulating floors and in which the worker uneven floors follows smoothly.
  • one of the support surfaces is flat and the other of the support surfaces is spherical, one of the support surfaces being formed by a molded body made of rubber-like elastic material.
  • the processing plate in question automatically adapts to this in the event of an unevenness in the ground and assumes a position which is inclined in accordance with the local shape of the ground, so that it can follow the wave shape of the ground.
  • the pivoting is not opposed by any force originating from the machine weight, since the machine weight is practically only transferred to the processing plate at the support point and the hanging attachment of the processing plate only has to secure it against falling away from the machine.
  • the processing plate is at an angle, it can move, so to speak, unloaded at the fastening points where the pivoting movement is noticeable due to the axially movable bearing. This results in an unimpeded and thus practically immediate adjustment of the processing plate to the local ground slope.
  • the soil cultivation machine shown in the drawing in the form of a floor grinding machine 1 is used for the surface treatment of floors 2.
  • the floor 2 is in particular a wooden floor and, above all, a parquet floor, the surface of which is to be ground off.
  • a brushing, polishing or the like instead of grinding. Act editing process.
  • the machine 1 has a machine housing 3, which sits on a chassis 4 with wheels 5, with a handle 6 standing up from the chassis 4, which can be gripped by the operator, so that the machine 1 can be moved or pushed by means of the wheels 5 can move over the floor 2.
  • the machine 1 also contains a motor 7 carried by the machine housing 3, in the exemplary embodiment an electric motor that drives a drive shaft 8 running downward from the motor.
  • processing plates 9 On the underside of the machine there are three processing plates 9 arranged in a triangle to one another, one of which is shown in section, while one of the other two processing plates 9 is visible in a side view.
  • the third processing plate When looking at FIG. 1, the third processing plate is located above the drawing plane in a position coinciding with the last-mentioned processing plate 9.
  • the entirety of the processing plates is enclosed by an annular housing extension 10, which ends somewhat above the floor 2 and can carry a sealing lip 11 which projects downwards and lies against the floor 2 and which is intended to prevent the dust generated by the processing plates from escaping to the outside.
  • the processing means 12 already mentioned is attached to the underside of the processing plate 9, in the exemplary embodiment a grinding means via which the respective processing plate 9 acts on the base 2.
  • the height of the running wheels 5 and that of the processing plate 9 are coordinated with one another in such a way that the processing plate 9 is pressed against the floor 2 by the machine weight, insofar as this is not taken up by the running wheels 5.
  • each processing plate 9 rotates about itself, ie about its axis of rotation 13, and thereby carries out the surface processing.
  • Each processing plate 9 is rotatably connected to a holding part 14 arranged coaxially above it, which is driven by the machine motor 7 and transmits the machine weight to the respective processing plate 9 during operation.
  • the holding part 14 is circular in accordance with its purpose and rotatably mounted on a housing-fixed bearing pin 15.
  • the drive of the holding parts 14 - corresponding to the number of processing plates 9, the machine has three such holding parts 14 - is carried out by means of a toothed belt 16 or another suitable belt, which with the drive shaft 8 and in the exemplary embodiment is in driving connection with a pinion 17 seated thereon.
  • the holding parts 14 are a pulley. In principle, however, the holding parts 14 could also be driven differently.
  • the machine 1 can in principle also have more or less than three processing plates 9, each with an associated holding part 14. In the case of a single processing plate 9, the holding part could sit directly on the drive shaft.
  • the cold parts 14 formed by pulleys or their bearing journals 15 are all seated on a common component 18 which is rotatably mounted on the housing 3 coaxially with the drive shaft 8.
  • the respective holding part 14 is supported on the processing plate 9 at a support point 19 in the region of the center of rotation (axis of rotation line 13 of the processing plate 9 and axis of rotation line 20 of the holding part 14).
  • the arrangement is such that the processing plate 9 can be pivoted like a ball joint, so that it can be inclined in all directions.
  • the axis of rotation line 13 of the processing actuator 9 is somewhat inclined to the axis of rotation line 20 of the holding part 14 which remains unchanged, the axis of rotation line 13 being able to be oriented as desired within a conical surface area predetermined by the maximum possible angle of rotation.
  • the machining plate 9 and the holding part 14 with the pivoting of the machining plate lie radially outside the support point 19 9 allowable distance, as can be seen from Figure 1.
  • Figure 1 it is a continuously flat floor 2.
  • the floors to be worked are often uneven like waves.
  • the processing plates 9 were arranged rigidly, irregularities in the processing would result with such an uneven floor.
  • the processing plate in question would either drive over it freely or with reduced system pressure.
  • the edge of the plate could cut into the surface of the soil.
  • the aforementioned pivotable arrangement of the processing plates 9 provides a remedy here, since the processing plates can adapt to the unevenness that occurs, so that a more uniform surface quality is achieved.
  • the holding part 14 simply lies on the processing plate 9 without any other connection, so that the processing plate 9 would be dropped from the ground when it was lifted up, no further measures would be provided.
  • the respective processing plate 9 is fastened to the holding part 14 at several, expediently at three fastening points 21 distributed around the central supporting point 19, namely hanging with axial movement play at each fastening point 21.
  • This axial movement play ensures that at the Fastening points 21 no vertical forces are transmitted to the machining plate 9 even when the machining plate 9 is pivoted, unless the machining plate 9 or the fastening means strike the holding part at the end of the pivoting path.
  • the respective machining plate 9 is connected in a rotationally fixed manner to the holding part 14 at the fastening points 21, which are evenly distributed along a circular line, and fastened to the holding part 14 in a rotationally fixed manner, the holding bolt 22 being fixed on the one hand on the holding part 14 and on the other hand on the machining plate 9 and is connected to the holding part 14 with axial play.
  • the axial movement play could also be provided on the processing plate 9 or both on the holding part 14 and on the processing plate 9.
  • the tapered pin portion 25 passes through a bearing bore 26 of a bearing body 27 seated on the holding part 14 in the exemplary embodiment, made of rubber-like elastic material, the region of the bearing body 27 containing the bearing bore 26 being shorter in the axial direction than the tapered portion 25 of the respective retaining bolt 22, so that a there is axial movement play with a length corresponding to the difference between the length of the tapered bolt section 25 and the thickness of the bearing body 27.
  • This difference length corresponds to the movement gap shown in FIG. 1 between the bearing body 27 and the lower stop surface 24 (see FIG. 3) 28.
  • the tillage machine 1 is drawn in a position lifted from the floor 2 by a small amount, so that the processing plate 9 hangs on the holding part 14 by means of the upper stop surface 23 of the holding bolts 22 and the movement gap 28 thus occurs below the respective bearing body 27.
  • the processing plates 9 are seated on the floor 2, there is a movement gap on both sides of the bearing body 27, which is correspondingly smaller with respect to the gap 28 shown.
  • the extent to which the respective retaining pin 22 can be moved in the associated bearing body 27 in the axial direction can be relatively small, since the bumps that occur in practice require only a relatively small pivotability of the processing plate 9.
  • the bearing body 27 simultaneously form elastic stops for the retaining bolts 22 when the maximum pivoting angle is reached.
  • the bearing bodies 27 expediently have a frustoconical shape and are each inserted into a corresponding frustoconical holding recess 29 in the holding part 14, the frustoconical shape tapering outwards. In this way, the bearing bodies 27 are positively secured against falling out. During assembly, the bearing body 27 pressed into the associated holding recesses 29 with elastic deformation.
  • the retaining bolts 22 have a threaded portion 30 screwed into the machining plate 9 at their end opposite the tapered bolt portion 25. Furthermore, the retaining bolts 22 between the tapered bolt portion 25 and the threaded portion 30 have a polygonal portion 31 arranged in the distance between the holding part 14 and the processing plate 9 for attaching a turning tool in the form of a wrench or the like, so that the retaining bolt in question is tightened or loosened on the processing plate 9 can be.
  • the polygonal portion 31 forms with its front side facing the tapered bolt portion 25 the lower stop surface 24.
  • the opposite stop surface 23 is formed by a conical bolt head 32 which can be easily inserted through the relevant bearing bore 26 during assembly.
  • the arrangement could in principle also be reversed so that the bearing bodies 27 on the processing plate 9 and the threaded holes 30 receiving the threaded portions would sit on the holding part 14 and the holding bolts 22 would be reversed.
  • the variant shown is useful in various respects.
  • the holding part 14 and the processing plate 9 each have a support surface 33 or 34, between which when the processing plate is pivoted a rolling movement takes place. Due to the rotational symmetry of the support surfaces 33, 34, this rolling movement is possible in all directions, so that in this way a ball joint-like pivotability is achieved without the occurrence of a frictional force. This is advantageous for the smooth movement of the swivel movement.
  • One of the support surfaces, the support surface 34, can be formed by the spherically shaped upper side 35 of a support projection 35 arranged on the processing plate 9 and protruding toward the holding part 14.
  • the support projection is expediently integrally formed on the processing plate 9.
  • the other support surface 33 is flat.
  • the arrangement could also be reversed in this regard, i.e. the spherical support surface could be on the holding part and the flat support surface on the processing plate.
  • the holding part 14 is supported on the processing plate 9 in an elastically flexible manner. This can be achieved very simply by the fact that at least one of the support surfaces 33, 34, in the exemplary embodiment the support surface 33, is formed by a molded body 37 made of rubber-like elastic material. This molded body is advantageously arranged on the holding part 14, but it could also sit on the processing plate in the case of reversed conditions.
  • the molded body 37 can be knotted into the part carrying it, it expediently having a frustoconical shape and being inserted into a corresponding frustoconical holding recess 38 of the part carrying it, the frustoconical shape tapering outward.
  • the same conditions as for the bearing bodies 27 can therefore exist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Working Implements (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Disintegrating Or Milling (AREA)
  • Vehicle Body Suspensions (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (9)

  1. Machine d'usinage du sol pour le traitement de surface de planchers, en particulier ponceuse pour sol, comportant au moins un plateau d'usinage sur la face inférieure de la machine, qui est placé sur un élément de maintien, pouvant être entraîné de manière motorisé en un mouvement de rotation, coaxialement à celui-ci, l'élément de maintien prenant appui sur le plateau d'usinage, en un point d'appui central, par montage pivotant à la manière d'une articulation sphérique du plateau d'usinage avec au moins une partie du poids de la machine, par une surface d'appui côté élément de maintien et une surface d'appui côté plateau d'usinage, et le plateau d'usinage faisant face, radialement à l'extérieur du point d'appui, à l'élément de maintien, à distance, et étant fixé suspendu à l'élément de maintien, solidairement en rotation, avec jeu de déplacement axial, en plusieurs points de fixation répartis autour du point d'appui, caractérisée en ce que l'une (33) des surfaces d'appui (33, 34) est plane et l'autre (34) des surfaces d'appui (33, 34) est bombée, une (33) des surfaces d'appui (33, 34) étant formée par un corps de forme (37) en matériau élastique du type du caoutchouc.
  2. Machine d'usinage du sol selon la revendication 1, caractérisée en ce que la surface d'appui (34) bombée est placée sur le plateau d'usinage (9) et la surface d'appui plane (33) sur l'élément de maintien (14).
  3. Machine d'usinage du sol selon la revendication 1 ou 2, caractérisée en ce que le corps de forme élastique (37) est placé sur l'élément de maintien (14).
  4. Machine d'usinage du sol selon l'une des revendications 1 à 3, caractérisée en ce que le corps de forme élastique (37) est noué à l'intérieur de l'élément (14) qui le porte.
  5. Machine d'usinage du sol selon l'une des revendications 1 à 4, caractérisée en ce que le corps de forme (37) présente une forme tronconique et est inséré dans un évidement de maintien (38) tronconique de l'élément (14) qui le porte, la forme tronconique se rétrécissant vers l'extérieur.
  6. Machine d'usinage du sol selon l'une des revendications 1 à 5, dans laquelle est prévue, aux points de fixation pour la fixation suspendue, solidaire en rotation, du plateau d'usinage sur l'élément de maintien, une tige de maintien, dépassant de l'un des éléments, qui présente une partie rétrécie, située entre deux surfaces de butée opérant axialement, qui traverse un perçage de palier sur l'autre élément, le perçage de palier étant plus court que la partie de tige rétrécie et présentant un plus petit diamètre que les surfaces de butée, caractérisée en ce que le perçage de palier (26) est formé dans un corps de palier (27) situé sur l'autre élément (élément de maintien 14), en matière élastique du type du caoutchouc.
  7. Machine d'usinage du sol selon la revendication 6, caractérisée en ce que le corps de palier (27) est placé sur l'élément de maintien (14).
  8. Machine d'usinage du sol selon la revendication 6 ou 7, caractérisée en ce que le corps de palier (27) présente une forme de type tronconique et est inséré dans un évidement de maintien (29) correspondant, de type tronconique, de l'élément de maintien (14) ou du plateau d'usinage, la forme tronconique se rétrécissant vers l'extérieur.
  9. Machine d'usinage du sol selon l'une des revendications 6 à 8, caractérisée en ce que les tiges de maintien (22) présentent à leur extrémité opposée à la partie rétrécie (25), une partie filetée (30) vissée dans le plateau d'usinage (9) ou dans l'élément de maintien et, entre la partie rétrécie (25) et la partie filetée (30), une partie polygonale (31), située à distance, entre l'élément de maintien (14) et le plateau d'usinage (9), pour l'application d'un outil à tourner.
EP94101437A 1993-04-10 1994-02-01 Machine d'entretien des sols Expired - Lifetime EP0619979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311869A DE4311869C2 (de) 1993-04-10 1993-04-10 Bodenbearbeitungsmaschine
DE4311869 1993-04-10

Publications (2)

Publication Number Publication Date
EP0619979A1 EP0619979A1 (fr) 1994-10-19
EP0619979B1 true EP0619979B1 (fr) 1997-04-16

Family

ID=6485254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101437A Expired - Lifetime EP0619979B1 (fr) 1993-04-10 1994-02-01 Machine d'entretien des sols

Country Status (6)

Country Link
US (1) US5439413A (fr)
EP (1) EP0619979B1 (fr)
AT (1) ATE151613T1 (fr)
DE (2) DE4311869C2 (fr)
DK (1) DK0619979T3 (fr)
ES (1) ES2100585T3 (fr)

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DE10002717B4 (de) * 2000-01-22 2014-12-11 Peter Sebastiani Abtragevorrichtung für und Verfahren zum Abtragen von Schichten
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US6616517B2 (en) 2001-07-23 2003-09-09 Onfloor Technologies, Llc Wood floor sanding machine
US6595838B1 (en) 2001-07-23 2003-07-22 Onfloor Technologies, Llc Wood floor sanding machine
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US6793567B1 (en) * 2003-05-07 2004-09-21 Northrop Grumman Corporation Upper outermold line sander
DE202004006169U1 (de) 2004-04-13 2004-07-01 Eugen Lägler GmbH Frästeller für eine Bodenbearbeitungsmaschine
US7326106B1 (en) 2005-12-02 2008-02-05 Vic International Corporation Device for treating flooring surfaces
US7310879B1 (en) 2006-07-27 2007-12-25 Robert Bosch Gmbh Cutting attachment having an adjustable foot for rotary hand tools
US7596872B2 (en) * 2006-07-27 2009-10-06 Robert Bosch Gmbh Cutting attachment with a removable cover for rotary hand tools
ATE512314T1 (de) * 2007-04-23 2011-06-15 Htc Sweden Ab Schleifhalter eines bearbeitungsgeräts
WO2009014511A1 (fr) * 2007-07-20 2009-01-29 Onfloor Technologies, L.L.C. Machine de finition de plancher
US8282445B2 (en) * 2007-07-20 2012-10-09 Onfloor Technologies, L.L.C. Floor finishing apparatus
US7997960B2 (en) * 2007-09-13 2011-08-16 Williams Sr Bruce Michael Floor resurfacing disk
US7892074B2 (en) * 2008-01-30 2011-02-22 3M Innovative Properties Company Surface modifying tool adapter using a plurality of surface modifying article inserts for use in a surface modifying system
US7731573B2 (en) * 2008-01-30 2010-06-08 3M Innovative Properties Company Method, system, and apparatus for modifying surfaces
US20090191376A1 (en) * 2008-01-30 2009-07-30 3M Innovative Properties Company Method, apparatus, and system using adapter assembly for modifying surfaces
US8684796B2 (en) 2011-10-04 2014-04-01 Krmc, Llc Floor grinding and polishing machine
KR102103420B1 (ko) * 2013-12-30 2020-05-29 삼성전자주식회사 패드 교체 장치, 이를 포함하는 청소기 및 청소기 시스템
FI131389B1 (en) * 2017-09-08 2025-03-21 Mirka Ltd Backing wheel arrangement for a grinding system and grinding system
CN111687702B (zh) * 2020-06-24 2022-08-05 泉州台商投资区品新装潢设计工作室 一种装潢施工使用的手持式墙面打磨装置

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Also Published As

Publication number Publication date
DE4311869A1 (de) 1994-10-13
ES2100585T3 (es) 1997-06-16
DE59402416D1 (de) 1997-05-22
DK0619979T3 (da) 1997-08-25
DE4311869C2 (de) 1995-10-12
ATE151613T1 (de) 1997-05-15
US5439413A (en) 1995-08-08
EP0619979A1 (fr) 1994-10-19

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