EP2303510A1 - Finishing machine - Google Patents

Finishing machine

Info

Publication number
EP2303510A1
EP2303510A1 EP09768609A EP09768609A EP2303510A1 EP 2303510 A1 EP2303510 A1 EP 2303510A1 EP 09768609 A EP09768609 A EP 09768609A EP 09768609 A EP09768609 A EP 09768609A EP 2303510 A1 EP2303510 A1 EP 2303510A1
Authority
EP
European Patent Office
Prior art keywords
machine
finishing
heads
support frame
drive shaft
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.)
Withdrawn
Application number
EP09768609A
Other languages
German (de)
French (fr)
Inventor
Alan Thomas Peake
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.)
Individual
Original Assignee
Individual
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
Priority claimed from AU2008903175A external-priority patent/AU2008903175A0/en
Application filed by Individual filed Critical Individual
Publication of EP2303510A1 publication Critical patent/EP2303510A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/20—Implements for finishing work on buildings for laying flooring
    • E04F21/24—Implements for finishing work on buildings for laying flooring of masses made in situ, e.g. smoothing tools
    • E04F21/245—Rotary power trowels, i.e. helicopter trowels
    • E04F21/248—Rotary power trowels, i.e. helicopter trowels used by an operator walking behind the trowel, i.e. walk-behind power trowels

Definitions

  • This invention relates to machines for finishing surfaces such as grinders for polishing concrete floors.
  • US Patent 6,494,772 discloses a floor conditioning machine which provides a random rotating orbital action and includes a main housing, wheel assembly, a handle assembly, a motor, a belt cover, a belt, a dust recovery system and orbital head assemblies.
  • the belt drive utilizes a serpentine configuration which rotates head assemblies in opposite directions so that torque is reduced and the machine is therefore easy to control and steer.
  • AU Patent Application 1006202204 discloses a machine which also utilizes a serpentine belt drive.
  • a primary pulley is driven by a motor and the belt drives pulleys which rotate head assemblies in opposite directions.
  • both these machines have a number of deficiencies; the dust collection apparatus is ineffective, they are difficult to move when not in operation and changing worn belts is time consuming.
  • a finishing machine comprises a motor mounted on a support frame and connected to a drive shaft and one or more pairs of finishing heads and an impeller fan driven by the drive shaft via a serpentine belt drive which rotates pairs of finishing heads in opposite directions.
  • the fan impels dust from the grinding heads into a rear vacuum manifold.
  • the support frame has rear wheels the height of which is adjustable.
  • the adjustment is by means of an hydraulic cylinder.
  • the drive belt runs on taper lock pulleys which allow quick release.
  • a finishing machine comprises a motor mounted on a support frame and connected to a drive shaft which drives ten finishing heads via a serpentine belt drive which rotates the finishing heads in opposite directions in a torque free configuration.
  • finishing heads have vanes mounted on their upper side to sweep dust to vacuum ports located on the periphery of the base of the machine.
  • Fig 1 is a side elevation of a finishing machine in use
  • Fig 2 is an underneath plan view of the head assemblies of the machine of Fig 1 and
  • Fig 3 is a side elevation of Fig 2 and Fig 4 illustrates an alternative configuration of grinding head assemblies. DETAILED DESCRIPTION OF THE INVENTION
  • FIg 1 1llustrates an operator using a finishing machine which has motor 1 mounted on frame 2 with removable front wheels 3 and adjustable rear wheels 4.
  • Handles 5 have a control box 6 mounted within reach of the operator.
  • As well as switching the machine on and off box 6 controls height adjustment by operating hydraulic cylinder 7 to rotate rear wheel strut 8 up or down. Accordingly when not in use strut 8 is lowered and the machine can be easily wheeled to another location.
  • Fig 2 shows the configuration of grinding head assemblies with a pair 10 at the front corners, a pair 11 at the rear corners, one 12 in the centre and a pair 13 between the centre and the rear corners.
  • the assembly 14 midway between the rear comers does not have a grinding head but is a fan which impels dust into a vacuum manifold 15 at the rear of the assemblies.
  • Motor 1 drives assembly 12 through a direct drive flexible coupling (not shown) and assembly 12 drives assemblies 10, 11, 13 and 14 via serpentine belt 16.
  • Belt 16 is so configured that it rotates pairs 10, 11 and 13 and 12 and 14 in opposite directions thus tending to cancel out the torque from the grinding heads.
  • Fan assembly 14 is optimally placed midway between the rear corners to impel dust generated by grinding assemblies 10, 11 , 12 and 13 into manifold 15 as the machine moves forward.
  • Manifold 15 is connected to a vacuum device (not shown) mounted on the machine. This vacuuming action is enhanced by a broom skirt (not shown) extending around the base of the machine.
  • Fig 3 shows grinding assemblies 10, 11, 12 and 13 and serpentine belt 16 driven by motor 1 which is flexibly coupled to spindle 17 of assembly 12. Accordingly belt 16 is driven by pulley 18 mounted on spindle 17 and in turn drives pulleys 19, 20 and 21 mounted on spindles 22, 23 and 24 of assemblies 10, 11 and 13. Spindles 17, 22, 23 and 24 are retained in bearings in plate 25 and pulleys 18, 19, 20 and 21 have a taper lock to allow quick release for fast change of belt 16.
  • Fig 4 illustrates an alternative configuration of grinding head assemblies with a pair 30 at the front corners, a pair 31 at the rear corners, one 32 at the front centre, a pair 33 on either side of and just behind 32, one 34 between the pair 31 and a pair 35 between pair 33 and pair 34.
  • Motor 1 drives assembly 32 through a belt and pulley coupling (not shown) and assembly 32 drives assemblies 30, 31 , 33, 34 and 35 via serpentine belt 36.
  • Belt 36 is so configured that it rotates pairs 30, 31 , 33 and 35 and 32 and 34 in opposite directions, thus canceling out the torque from the grinding heads. All assemblies have vanes (not shown) on their upper side which sweep dust to vacuum ports (not shown) on the periphery of the base of the machine.
  • the machine of this invention utilizes the known torque reduction serpentine belt configuration in a novel way to achieve optimum dust removal with the substitution of impeller fan assembly 14 in place of a grinding head or the provision of vanes on assemblies 30 to 35.
  • impeller fan assembly 14 in place of a grinding head or the provision of vanes on assemblies 30 to 35.
  • It also provides rapid height adjustment via hydraulic cylinder 7 to facilitate transport and rapid belt change by means of taper lock pulleys 18, 19, 20 and 21. Electric, petrol and gas motors are available to power the grinding assemblies.

Abstract

A finishing machine comprises a motor mounted on a support frame and connected to a drive shaft and two or more finishing heads and an impeller fan driven by the drive shaft via a serpentine belt drive which rotates the finishing heads in opposite directions. The impeller fan impels dust from the grinding heads into a rear vacuum manifold and the support frame has rear wheels the height of which is adjustable by means of an hydraulic cylinder.

Description

FINISHING MACHINE
FIELD OF THE INVENTION
This invention relates to machines for finishing surfaces such as grinders for polishing concrete floors.
BACKGROUND OF THE INVENTION
US Patent 6,494,772 discloses a floor conditioning machine which provides a random rotating orbital action and includes a main housing, wheel assembly, a handle assembly, a motor, a belt cover, a belt, a dust recovery system and orbital head assemblies. The belt drive utilizes a serpentine configuration which rotates head assemblies in opposite directions so that torque is reduced and the machine is therefore easy to control and steer.
AU Patent Application 1006202204 discloses a machine which also utilizes a serpentine belt drive. A primary pulley is driven by a motor and the belt drives pulleys which rotate head assemblies in opposite directions. However both these machines have a number of deficiencies; the dust collection apparatus is ineffective, they are difficult to move when not in operation and changing worn belts is time consuming.
OBJECT OF THE INVENTION
It is therefore an object of the invention to provide a.finishiπg machine which is an improvement on the prior art machines or at least provides a useful alternative.
STATEMENT OF THE INVENTION
According to the present invention a finishing machine comprises a motor mounted on a support frame and connected to a drive shaft and one or more pairs of finishing heads and an impeller fan driven by the drive shaft via a serpentine belt drive which rotates pairs of finishing heads in opposite directions.
Preferably the fan impels dust from the grinding heads into a rear vacuum manifold.
Preferably the support frame has rear wheels the height of which is adjustable.
Preferably the adjustment is by means of an hydraulic cylinder.
Preferably the drive belt runs on taper lock pulleys which allow quick release.
Alternatively a finishing machine comprises a motor mounted on a support frame and connected to a drive shaft which drives ten finishing heads via a serpentine belt drive which rotates the finishing heads in opposite directions in a torque free configuration.
Preferably the finishing heads have vanes mounted on their upper side to sweep dust to vacuum ports located on the periphery of the base of the machine.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the invention is now described by way of example only with reference to the accompanying drawings in which:
Fig 1 is a side elevation of a finishing machine in use
Fig 2 is an underneath plan view of the head assemblies of the machine of Fig 1 and
Fig 3 is a side elevation of Fig 2 and Fig 4 illustrates an alternative configuration of grinding head assemblies. DETAILED DESCRIPTION OF THE INVENTION
FIg 1 1llustrates an operator using a finishing machine which has motor 1 mounted on frame 2 with removable front wheels 3 and adjustable rear wheels 4. Handles 5 have a control box 6 mounted within reach of the operator. As well as switching the machine on and off box 6 controls height adjustment by operating hydraulic cylinder 7 to rotate rear wheel strut 8 up or down. Accordingly when not in use strut 8 is lowered and the machine can be easily wheeled to another location.
Fig 2 shows the configuration of grinding head assemblies with a pair 10 at the front corners, a pair 11 at the rear corners, one 12 in the centre and a pair 13 between the centre and the rear corners. The assembly 14 midway between the rear comers does not have a grinding head but is a fan which impels dust into a vacuum manifold 15 at the rear of the assemblies.
Motor 1 drives assembly 12 through a direct drive flexible coupling (not shown) and assembly 12 drives assemblies 10, 11, 13 and 14 via serpentine belt 16. Belt 16 is so configured that it rotates pairs 10, 11 and 13 and 12 and 14 in opposite directions thus tending to cancel out the torque from the grinding heads.
Accordingly the machine Is easy to steer since there is only minimal resultant torque.
Fan assembly 14 is optimally placed midway between the rear corners to impel dust generated by grinding assemblies 10, 11 , 12 and 13 into manifold 15 as the machine moves forward. Manifold 15 is connected to a vacuum device (not shown) mounted on the machine. This vacuuming action is enhanced by a broom skirt (not shown) extending around the base of the machine.
Fig 3 shows grinding assemblies 10, 11, 12 and 13 and serpentine belt 16 driven by motor 1 which is flexibly coupled to spindle 17 of assembly 12. Accordingly belt 16 is driven by pulley 18 mounted on spindle 17 and in turn drives pulleys 19, 20 and 21 mounted on spindles 22, 23 and 24 of assemblies 10, 11 and 13. Spindles 17, 22, 23 and 24 are retained in bearings in plate 25 and pulleys 18, 19, 20 and 21 have a taper lock to allow quick release for fast change of belt 16.
Fig 4 illustrates an alternative configuration of grinding head assemblies with a pair 30 at the front corners, a pair 31 at the rear corners, one 32 at the front centre, a pair 33 on either side of and just behind 32, one 34 between the pair 31 and a pair 35 between pair 33 and pair 34.
Motor 1 drives assembly 32 through a belt and pulley coupling (not shown) and assembly 32 drives assemblies 30, 31 , 33, 34 and 35 via serpentine belt 36. Belt 36 is so configured that it rotates pairs 30, 31 , 33 and 35 and 32 and 34 in opposite directions, thus canceling out the torque from the grinding heads. All assemblies have vanes (not shown) on their upper side which sweep dust to vacuum ports (not shown) on the periphery of the base of the machine.
ADVANTAGES
It will be obvious that the machine of this invention utilizes the known torque reduction serpentine belt configuration in a novel way to achieve optimum dust removal with the substitution of impeller fan assembly 14 in place of a grinding head or the provision of vanes on assemblies 30 to 35. However it is only the ten It also provides rapid height adjustment via hydraulic cylinder 7 to facilitate transport and rapid belt change by means of taper lock pulleys 18, 19, 20 and 21. Electric, petrol and gas motors are available to power the grinding assemblies.
VARIATIONS
It will be realized that the foregoing has been given by way of illustrative example only and that all other modifications and variations as would be apparent to persons skilled in the art including mechanical equivalents are deemed to fall within the broad scope and ambit of the invention as herein set forth. Throughout the description and claims of this specification the words "comprise" and variations of that word such as "comprises" and "comprising" are not intended to exclude other additives components Integers or steps.

Claims

1. A finishing machine comprising a motor mounted on a support frame and connected to a drive shaft and one or more pairs of finishing heads and an impeller fan driven by the drive shaft via a serpentine belt drive which rotates pairs of finishing heads in opposite directions.
2. The machine of claim 1 in which the Impeller fan Impels dust from the grinding heads into a rear vacuum manifold.
3. The machine of claim 1 in which the support frame has rear wheels the height of which is adjustable.
4. The machine of claim 3 in which the adjustment is by an hydraulic cylinder.
5. The machine of claim 1 in which the drive belt runs on taper lock pulleys which allow quick release.
6. A finishing machine comprising a motor mounted on a support frame and connected to a drive shaft which drives ten finishing heads via a serpentine belt drive which rotates the finishing heads in opposite directions in a torque free configuration.
7. The finishing machine of claim 6 in which the finishing heads have vanes mounted on their upper side to sweep dust to vacuum ports located on the periphery of the base of the machine.
EP09768609A 2008-06-23 2009-06-17 Finishing machine Withdrawn EP2303510A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008903175A AU2008903175A0 (en) 2008-06-23 Finishing machine
PCT/AU2009/000773 WO2009155636A1 (en) 2008-06-23 2009-06-17 Finishing machine

Publications (1)

Publication Number Publication Date
EP2303510A1 true EP2303510A1 (en) 2011-04-06

Family

ID=41443893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768609A Withdrawn EP2303510A1 (en) 2008-06-23 2009-06-17 Finishing machine

Country Status (5)

Country Link
US (1) US20110104996A1 (en)
EP (1) EP2303510A1 (en)
CN (1) CN102066053A (en)
AU (1) AU2009262337A1 (en)
WO (1) WO2009155636A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2457931C1 (en) * 2010-12-24 2012-08-10 Юрий Сергеевич Конобеев Plain grinder machine
CN102922425B (en) * 2011-08-11 2014-10-29 昌威发兴业有限公司 Drive device of polisher
US10406648B2 (en) * 2012-01-19 2019-09-10 Newgrind Inc. Apparatus for surface abrasion
US20140356065A1 (en) * 2013-05-29 2014-12-04 Armando Munoz Grading and screeding device
CN104551898B (en) * 2014-12-12 2017-02-22 梁蓓 Double-end ship deck surface treatment device with blowing device and using method thereof
CN104963265B (en) * 2015-07-24 2017-03-15 徐霁星 A kind of road construction device with limit function
CN107938483A (en) * 2017-12-01 2018-04-20 王国超 A kind of municipal administration bituminous concrete highway pavement is built with automatic shot blasting construction machine
CN107938481A (en) * 2017-12-01 2018-04-20 王炯炜 A kind of municipal administration Recycled Asphalt Pavement pavement of road construction ball blast construction equipment
CN108004893A (en) * 2017-12-01 2018-05-08 倪敏芳 A kind of municipal administration bituminous concrete highway pavement mechanization ball blast construction robot
CN113827134B (en) * 2021-09-28 2022-06-28 中国建筑第八工程局有限公司 A shift axle multi-wheel polishing equipment for terrace
CN114986288B (en) * 2022-05-13 2024-02-02 浙江洛伦兹电机科技有限公司 Wall surface grinding machine adopting novel brushless motor structure and application method thereof

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US3701221A (en) * 1971-04-07 1972-10-31 Frank P Vinella Dry grinding terrazzo floor finishing machine
SE419053B (en) * 1979-05-17 1981-07-13 Dynapac Maskin Ab GRINDING MACHINE FOR WORKING PLAN SURFACES LIKE STONE FLOORS, CONCRETE OR SIMILAR HARDNESS MATERIAL
CN2249147Y (en) * 1995-09-26 1997-03-12 宁波环球电机有限公司 Disc-type sand grinding device
JP2000042917A (en) * 1998-07-28 2000-02-15 Nikon Corp Grinding wheel head, and grinding device and method
US6494772B1 (en) * 1999-11-30 2002-12-17 Roger W. Barnes Floor conditioning system
SE518356C2 (en) * 2001-02-06 2002-10-01 Haakan Thysell Device for mobile machine for grinding floor surfaces
US6616517B2 (en) * 2001-07-23 2003-09-09 Onfloor Technologies, Llc Wood floor sanding machine
US7458883B2 (en) * 2006-01-31 2008-12-02 B A Werk Industries Ltd. Apparatus for abrading a surface

Non-Patent Citations (1)

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Title
See references of WO2009155636A1 *

Also Published As

Publication number Publication date
US20110104996A1 (en) 2011-05-05
CN102066053A (en) 2011-05-18
AU2009262337A1 (en) 2009-12-30
WO2009155636A1 (en) 2009-12-30

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