EP0448824B1 - Machine de récurage pour grandes surfaces, particulièrement pour surfaces industrielles - Google Patents

Machine de récurage pour grandes surfaces, particulièrement pour surfaces industrielles Download PDF

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Publication number
EP0448824B1
EP0448824B1 EP90124953A EP90124953A EP0448824B1 EP 0448824 B1 EP0448824 B1 EP 0448824B1 EP 90124953 A EP90124953 A EP 90124953A EP 90124953 A EP90124953 A EP 90124953A EP 0448824 B1 EP0448824 B1 EP 0448824B1
Authority
EP
European Patent Office
Prior art keywords
brush unit
machine according
washing
machine
sides
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.)
Revoked
Application number
EP90124953A
Other languages
German (de)
English (en)
Other versions
EP0448824A1 (fr
Inventor
Sergio Zoni
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.)
Dulevo International SpA
Original Assignee
Dulevo International SpA
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
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Application filed by Dulevo International SpA filed Critical Dulevo International SpA
Publication of EP0448824A1 publication Critical patent/EP0448824A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • 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
    • A47L11/4041—Roll 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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • 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
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • 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
    • A47L11/4061—Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated

Definitions

  • the present invention has for its subject matter a washing machine for wide surfaces, in particular for industrial floorings.
  • a washing machine is defined in the preamble of the accompanying Claim 1 and it is known, for example, from US-A-3345671 and from US-A-4009500.
  • the washing and cleaning machines can be also supplied with normal brushes and rollers with long and soft bristles for getting a further sweeping and collection action of the debris or garbage having wider dimensions.
  • the indicated machines have an important technical problem, that is the selection of the position of brush-holder unit: the same unit can be located overhanging before the machine chassis, as generally occurs, or also under the same chassis.
  • the overhanging position before the chassis has the advantage to make very easy the control or replacement or cleaning of brushes and related motors and supports. Further the driver can observe easily the position of the washing brushes. Therefore it becomes possible to keep the brushes near to eventual obstacles or sides or walls or other matter present in conjuction with the surfaces to be cleaned.
  • the position of the brush-holder unit under the chassis reduces the dimensions of these machines and increases the maneuvrability thereof. Yet this technical solution actually reduces the possibility of good running of these machines.
  • the brush-holder unit located under the chassis is scarcely accessibile and therefore all operations of cleaning, maintenance and control are difficult.
  • the operator that drives the machine can be obliged to skim the obstacles and sides present in conjuction with the flooring surfaces to be washed with the body sides of the same machine, and further the same operator must move his eyes from the move direction, if he must observe the chassis body sides.
  • US-A-3345671 discloses a machine where three brushes, located between the end sides of the chassis, are aligned so as to exceede the width of the chassis.
  • the lateral brushes can be retracted towards the inside of the machine and the adjustment between wide and narrow settings is made by a control lever, which compels the lateral brushes to surpass the central brush and to go near each other.
  • the lateral brushes must surpass the central brush, to be retracted, and therefore they move going forward, against the obstacle, while they surpass the central brush.
  • US-A-4009500 discloses a floor scrubbing apparatus including a chassis supporting a V-shaped brush unit having three scrubbing brushes, which are placed under the chassis.
  • the brush unit can be raised and lowered, by hydraulic means, into and out of floor cleaning positions.
  • the raising of the brush unit avoids an unnecessary wear of the brushes, but does not avoid the cited possibilities of damages by shock.
  • the technical aim of the present invention is to supply a machine suitable for obviating substantially to the above mentioned drawbacks.
  • the technical aim is substantially obtained by a washing machine for wide surfaces, in particular for industrial floorings, as claimed in Claim 1.
  • the machine according to the invention is generally indicated by the reference number 1 . It includes a support chassis 2 that in plan view has overall dimensions substantially limited by body sides 3 and end edges 4 .
  • the lateral body sides 3 are substantially parallel with one another and to the main development direction of machine 1.
  • the end edges 4 are transversal to the lateral body sides 3 and establish the front and rear edges of chassis 2.
  • the chassis 2 holds, in direction of a pavement 44 to be cleaned, wheels for the movement of the machine 1 divided in two rear wheels 5 , located adjacent to the lateral body sides 3 and aligned with one another in conjuction with a rear axle 6 transversal to the same body sides, and a single front steering wheel 7 located onto a front axle 8 .
  • the same front axle 8 is joined to an electric motor 7a .
  • the front steering wheel is a drive wheel and the two rear wheels 5 are idle wheels.
  • a brush unit 9 located under the chassis 2 in a position included between the end edges 4, and also included between front axle 8 and rear axle 6. In pratice the brush unit 9 is located along the move direction immediately downstream the front steering wheel 7.
  • the brush unit 9 is supported by the chassis 2 by the insertion of a pin 10 , that forms an oscillation axis 10a for the same brush unit 9, substantially in vertical direction.
  • the oscillation axis 10a coincides with the rotation axis of the front steering wheel 7.
  • the brush unit 9 has a transversal dimension exceeding the maximum distance between the body sides 3 and therefore establishes a washing path 9a having washing edges 9b , reciprocally spaced of a measure greater than said distance between the same body sides 3.
  • the brush unt 9 develops according to a shape that surrounds partially the front steering wheel 7 and includes an articulated structure 11 , suitable for supporting a plurality of motors 12 , to which a plurality of washing brushes 13 are joined.
  • the articulated structure 11 On its turn the articulated structure 11 includes a first support body 14 , rotatably joined with the pin 10, a couple of arms 15 engaged, in conjuction with the first ends 16 thereof, to the first support body 14 along first pins 17 , located parallel with one another and transversal to the oscillation axis 10a.
  • a second support body 18 suitable for supporting the motors 12 and the washing brushes 13, is rotatably engaged to second ends 19 of the arms 15 in conjuction with second pins 20 parallel to the first pins.
  • a presser device 22 engaged to the first support body 14 and developing between this last body and the crosspiece body 21, presses the second support body 18 in the direction of surfaces to be cleaned by the insertion of elastic elements 23 .
  • the presser device 22 includes a drive unit 24 and a bar 25 sliding substantially in the axial direction included between the first support body 14 and the crosspiece body 21.
  • the control unit 24 is preferably made by a known electric actuator, including a geared motor 24a , suitable for rotating, e.g. by means of a worm screw, a toothed coupling 24b , winding the bar 25 and screwed thereto.
  • the bar 25 can be axially moved and rotatably fixed and therefore the rotation of the toothed coupling 24b causes the bar 25 to be moved axially.
  • the elastic elements 23 are made-up by tensile springs restrained at its ends with the rod 26 and with projections 29 of the same wings 28.
  • a roller 30 substantially cylindrical in form is foreseen between the rear wheels 5 for collecting debris or garbage and this roller is turning with respect to a rotation axle substantially coincident with the rear axle 6.
  • the roller 30 establishes a debris collection path 30a with collection edges 30b , having a width lower to the minimum distance between the body sides 3.
  • the debris or garbage are thrown by the roller 30 into a collector 31 , of the extractable type for getting a better cleaning, having the bottom supplied with holes for allowing the collected water to be discharged onto the ground.
  • the Figures 1 and 2 show the conveyor members 32 that are made up of scraping wings located onto the edges of the second support body 18.
  • the Figure 4 shows that the conveyor members 32 include also elastic members 34 that press the scraping wings 33 onto the flooring 44.
  • the elastic members 34 have a strut 34a supporting scraping wings 33 and sliding through the support body 18, under the control of a lever 34b driven by a spring element 34c .
  • the centering means 35 includes a rod 36 located transversal to the oscillation axis 10a and engaged at its end by a projection 10b of pin 10, turning around the oscillation axis 10a together with the brush unit 9.
  • the engagement of the rod 36 with the protrusion 10b is made by a manually detachable connection pin 36a .
  • the rod 36 is partially slidingly embodied into a tubular housing body 37 rotatably joined to the chassis 2. Further the rod 36 is slidingly surrounded by elastic means 38 formed by a compression spring hold between a couple of housing rings 39 sliding internally to the housing body 37 and locked in the inside of the housing body 37 by limit stop means 40 .
  • the residual water remaining onto the pavement 44 is sucked by suction elements 42 , located downstream the rear axle 6 and in contact with the pavement ground 44 and sent into a tank housed in the zone 43 .
  • the running of the machine occurs as follows.
  • the second support body 18 supporting the washing brushes 13 is pressed against the ground by means of a presser device 22 and the pressure, adjustable by the operator, controlling the drive unit 24, depends on the intensity of the required cleaning action and by the type of treated pavement 44.
  • the pressure is suitable for locating the rod 26 in an intermediate position within the slots 27: therefore the elastic elements 23 transmit elastically the force of the presser device 22 to the crosspiece body 21 and to the arms 15.
  • the slots 27 allow oscillations of the second support body 18 and arms 15 and these oscillations are balanced by the elastic elements 23. There are possible oscillations both in vertical direction, with equal tensile force of the two elastic elements 23, and tilts for the lifting of a lateral brush and following tensile force different in the elastic elements 23.
  • the first and second pins 17 and 20, or at least these last pins are assembled with play for allowing twists between the joined parts. Further the second pins 20, aligned with one another, establish a pitch axle suitable for allowing adjustment movements of the second support body 18 around the same axle.
  • the scraping wings 33 during the move of the machine, transport water and debris or garbage in conjuction with the roller 30 that projects them into the collector 31.
  • the remaining water laid onto the surfaces is removed by the suction elements 42 in contact with the ground.
  • the brush unit 9 can be lifted by means of the presser device 22, that, under the control of the drive unit 24, causes the lifting of the rod 25 and rod 26.
  • This last rod slides lifting along the slots 27, reducing the tensile force of the elastic elements 23 and finally adjusting itself in mechanical rest onto the superior ends of the slots 27. Therefore the lifting can be completed by the direct action onto the wings 28 and onto the crosspiece body 21.
  • the invention achieves important advantages.
  • the particular washing brushes are positioned backwards with respect to the front edge of the machine chassis, in such a manner to make the same machine compact and manoeuvrable, but this does not cause a reduced access possibility to the same brushes, or a difficult control of the washing action in presence of obstacles.
  • conveyor members 32 allows that, notwithstanding the amplitude of the brush unit 9, a collecting roller 30 of very reduced width can be used, located between the rear wheels 5 and therefore in a zone not used by members that act directly onto pavements.

Landscapes

  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Cleaning In General (AREA)
  • Detergent Compositions (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Claims (14)

  1. Machine de récurage pour grandes surfaces, particulièrement pour surfaces industrielles, comprenant un châssis (2) qui, vu en plan, apparaît essentiellement limité par des parois de profil latéral (3) et des parois d'extrémité (4) transversales auxdites parois de profil latéral (3) et supportant, en correspondance d'une surface (44) à récurer, au moins des roues (5, 7) pour le mouvement de ladite machine, et une unité de brossage (9) comprenant des brosses (13) de lavage et située entre lesdites parois d'extrémités (4), ladite unité de brossage (9) ayant une dimension transversale dans une direction transversale par rapport auxdites parois de profil latéral (3) dépassant la distance maximum entre lesdites parois de profil latéral (3), de manière adaptée à établir un parcours de lavage (9a) ayant des bords de lavage (9b) dont la distance réciproque est supérieure à ladite distance maximum entre lesdites parois de profil latéral (3),
    caractérisée en ce que ladite unité de brossage (9) ayant ladite dimension transversale et comprenant lesdites brosses de lavage est susceptible de rotation autour d'un axe d'oscillation sensiblement vertical (10a) établi par un pivot (10) intercalé entre ladite unité de brossage (9) et ledit châssis (2), ladite unité de brossage (9) dans son ensemble pouvant tourner sensiblement parallèlement à ladite surface (44),
    - et en ce qu'il y a des moyens de centrage (35) engagés avec ledit châssis (2) et destinés à empêcher la rotation libre de ladite unité de brossage (9) autour didit axe d'oscillation (10a).
  2. Machine sel on la revendication 1, dans laquelle il y a une seule roue directrice avant (7), et dans laquelle ladite roue directrice avant (7) a un axe de rotation situé en combinaison avec ledit axe d'oscillation (10a) de ladite unité de brossage (9).
  3. Machine selon la revendication 2, dans laquelle ladite unité de brossage (9) entoure ladite roue directrice avant, selon une vue en plan.
  4. Machine selon la revendication 1, dans laquelle au-dessous dudit châssis (2) il y a un rouleau de forme sensiblement cylindrique destiné a collecter les débris, disposé a la partie arrière par rapport a ladite unité de brossage (9), dans la direction de mouvement de ladite machine, et présentant un arbre de rotation sensiblement parallèle à ladite surface (44), ledit rouleau (30) établissant un parcours de collecte (30a) ayant une largeur inférieure à celle dudit parcours de lavage (9a), et dans laquelle il y a des organes de transport (32) se développant entre ledit parcours de lavage (9a) et ledit parcours de collecte (30a) en contact avec ladite surface (44) et susceptibles de transporter les débris et le liquide de lavage en direction dudit rouleau (30).
  5. Machine selon la revendication 4, dans laquelle lesdits organes de transport (32) sont supportés par ladite unité de brossage (9) et sont mobiles avec celle-ci.
  6. Machine selon la revendication 4, dans laquelle lesdits organes de transport (32) comportent des ailes de raclage (33) convergeant vers ledit parcours de collecte (30a) à partir desdits bords de lavage (9b) dudit parcours de lavage (9a) et des organes élastiques (34) susceptibles de presser élastiquement lesdites ailes de raclage (33) contre ladite surface (44).
  7. Machine selon la revendication 4, dans laquelle ledit rouleau (30) est situé entre les roues arrière (5) de ladite machine, alingées l'une à l'autre suivant un essieu arrière (6) transversal auxdites parois de profil latéral (3), ledit arbre de rotation dudit rouleau (30) coïncidant sensiblement avec ledit essieu arrière (6) et ledit rouleau (30) établissant ledit parcours de collecte (30a) de largeur inférieure à ladite distance maximum entre lesdites parois de profil latéral (3).
  8. Machine selon la revendication 1, dans laquelle ladite unité de brossage (9) est pourvue d'une structure articulée (11) comprenant: un premier corps de support (14) uni de manière basculante audit pivot (10), au moins une paire de bras (15) engagés audit premier corps de support (14) en combinaison avec des premiers pivots (17) parallèles entre eux et transversaux audit axe d'oscillation (10a) et un deuxième corps de support (18) destiné à supporter lesdites brosses (13) et engagé de manière basculante auxdits bras (15) en combinaison avec des deuxièmes pivots (20) disposés sensiblement parallèles auxdits premiers pivots (17).
  9. Machine selon la revendication 8, dans laquelle il y a au moins un dispositif presseur (22), engagé audit premier corps de support (14) et destiné à presser ledit deuxième corps de support (18) dans la direction de ladite surface (44).
  10. Machine selon la revendication 9, dans laquelle ledit dispositif presseur (22) comporte une unité de commande (24) et une barre (25) mobile axialement sous l'action de ladite unité de commande (24) dans la direction dudit deuxième corps de support (18).
  11. Machine selon la revendication 9, dans laquelle il y a un corps formant traverse (21) s'étendant entre lesdits bras (15), articulé par rapport auxdits bras et engagé audit dispositif presseur (22), ledit dispositif presseur (22) s'étendant entre ledit premier corps de support (14) et ledit corps formant traverse (21).
  12. Machine selon la revendication 11, dans laquelle il y a des éléments élastiques (23) intercalés entre ledit dispositif presseur (22) et ledit corps formant traverse (21) et destinés à agir sur ladite surface (44).
  13. Machine selon la revendication 1, dans laquelle lesdits moyens de centrage (35) comportent une tige (36) mobile avec ladite unité de brossage (9) et engagée à cette unité par une cheville de liaison (36a) détachable manuellement, des moyens élastiques (38) étant interposés entre ledit châssis (2) et ladite tige (36).
  14. Machine selon la revendication 13, dans laquelle ladite tige (36) est située transversalement audit axe d'oscillation (10a) et mobile dans une direction axiale principale, et dans laquelle lesdits moyens de centrage (35) comportent en outre un corps tubulaire de support (37) articulé de manière basculante audit châssis (2) et logeant au moins partiellement et de manière coulissante ladite tige (36) et lesdits moyens élastiques (38), lesdits moyens élastiques (38) étant enroulés en coulissement sur ladite tige (36), des arrêts formant limite (40) pour lesdits moyens élastiques (38) engagés audit corps de support (37) et des éléments presseurs (41) desdits moyens élastiques (38) engagés sur ladite tige (36).
EP90124953A 1990-03-26 1990-12-20 Machine de récurage pour grandes surfaces, particulièrement pour surfaces industrielles Revoked EP0448824B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1981890 1990-03-26
IT19818A IT1239825B (it) 1990-03-26 1990-03-26 Macchina di lavaggio e pulizia di superfici,particolarmente di pavimentazioni industriali

Publications (2)

Publication Number Publication Date
EP0448824A1 EP0448824A1 (fr) 1991-10-02
EP0448824B1 true EP0448824B1 (fr) 1994-11-30

Family

ID=11161531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124953A Revoked EP0448824B1 (fr) 1990-03-26 1990-12-20 Machine de récurage pour grandes surfaces, particulièrement pour surfaces industrielles

Country Status (4)

Country Link
EP (1) EP0448824B1 (fr)
AT (1) ATE114435T1 (fr)
DE (1) DE69014603D1 (fr)
IT (1) IT1239825B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018207428B3 (de) * 2018-05-14 2019-05-23 I-Mop Gmbh Nassreinigungsvorrichtung zur Nassreinigung einer Bodenfläche
US20200121150A1 (en) * 2018-10-17 2020-04-23 Kärcher North America, Inc. Wheel propelled steerable floor cleaning machine
USD1016416S1 (en) 2022-02-14 2024-02-27 Karcher North America, Inc. Floor cleaning machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1019363A (fr) * 1950-05-31 1953-01-21 Balayeuse automobile
US3233274A (en) * 1963-01-28 1966-02-08 Tennant Co G H Sweeping machine dust separator apparatus
US3345671A (en) * 1966-01-11 1967-10-10 Ross D Wilson Floor scrubbing and polishing machine
US3701177A (en) * 1971-04-22 1972-10-31 Star Ind Inc Front wheel driven floor scrubber
US4009500A (en) * 1976-04-26 1977-03-01 Star Industries, Inc. Floor scrubbing apparatus
IT1195887B (it) * 1986-07-31 1988-10-27 Dulevo Spa Macchina spazzatrice stradale per la raccolta di rifiuti

Also Published As

Publication number Publication date
IT1239825B (it) 1993-11-15
EP0448824A1 (fr) 1991-10-02
IT9019818A0 (it) 1990-03-26
ATE114435T1 (de) 1994-12-15
DE69014603D1 (de) 1995-01-12
IT9019818A1 (it) 1991-09-26

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