EP2589727A2 - Rührende Walzenbürste - Google Patents

Rührende Walzenbürste Download PDF

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Publication number
EP2589727A2
EP2589727A2 EP12191151.5A EP12191151A EP2589727A2 EP 2589727 A2 EP2589727 A2 EP 2589727A2 EP 12191151 A EP12191151 A EP 12191151A EP 2589727 A2 EP2589727 A2 EP 2589727A2
Authority
EP
European Patent Office
Prior art keywords
spikes
screed
roller brush
levelling
self
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Withdrawn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
EP12191151.5A
Other languages
English (en)
French (fr)
Other versions
EP2589727A3 (de
Inventor
Ing. Valter Scherfel
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.)
Cemex Research Group AG
Original Assignee
Cemex Research Group AG
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 Cemex Research Group AG filed Critical Cemex Research Group AG
Publication of EP2589727A2 publication Critical patent/EP2589727A2/de
Publication of EP2589727A3 publication Critical patent/EP2589727A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • A46B7/10—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement as a rotating cylinder
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0207—Bristles characterised by the choice of material, e.g. metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/16—Implements for after-treatment of plaster or the like before it has hardened or dried, e.g. smoothing-tools, profile trowels
    • E04F21/161—Trowels
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/40—Other application
    • A46B2200/405—Brush used for purposes that are not conventional brushing, e.g. holder or support

Definitions

  • the invention relates to tools for working - levelling of self-levelling floor screeds in building industry, particularly tools designed to reduce or avoid cracking of cement based floor screeds.
  • Self-levelling screed is commonly applied in thickness from 35 mm - anhydrite (gypsum-based) screed, cement screed from 20-60 mm. Both basic types contain aggregates, usually mined (not crushed), with grain size 0-8 mm. The described working manner is used with all types of self-levelling screeds.
  • Some other devices aim at that the surface of the screed remains smooth, as described in DE 3227056 A1 or to ensure that the thickness of the layer is constant for a given surface, as described in US 6350083 .
  • the mentioned however, are not the object of the present invention that mainly aims at reducing the risk of screed heterogeneities and formation of cracks.
  • Self-levelling materials used (as well as designed) for thickness below 20-60 mm are called self-levelling thin screeds.
  • Self-levelling thin screeds are worked using a levelling roller which is equipped with a set of identical spikes (all having the same length or height with respect either to the centre or the surface of the roller rod.
  • Self-levelling thin screeds are then worked by moving, rolling the roller in the layer of self-levelling thin screed.
  • the use of the said roller is easier in regard of laboriousness, but such roller cannot be used to work self-levelling screeds due to that their thickness is greater than that of self-levelling thin screeds.
  • the object of the present invention is to overcome disadvantages of the prior art technology and to provide a technical solution that is simple and fast to apply on freshly placed screeds.
  • the object of the present invention is achieved by the stirring roller brush comprising the set of identical spikes, identical preferably in regard of their length/height, diameter and design. Spikes are distributed on the surface of a rod, rotating along its axis.
  • Key feature of the stirring roller brush according to the present invention consists in that the said roller is provided with at least one spacer which extends beyond the outline of the first set of identical spikes.
  • the spacer consists of a set of identical spacing elements, which extend beyond the outline of the set of identical spikes.
  • Fig. 1 shows side view of the roller brush according to the invention
  • Fig. 2 shows top schematic view of the roller brush according to the invention, wherein individual spikes of the set of identical spikes and individual spacing elements are not shown for sake of simplicity.
  • the roller brush according to Fig. 1 and 2 comprises the set of identical spikes 1 , preferably identical in regard of their length/height associated with the spacer, hereby represented by spacing elements 2 which extend beyond the outline of the set of identical spikes 1 .
  • the spacing elements 2 are part of or formed as an extension of a set of identical spikes 1 .
  • the roller brush in this example also comprises a handle 3 to guide the roller, with a hollow to insert a shaft (not shown in the drawings) in order to extend the working range and to reduce the laboriousness for a worker due to bending down.
  • the difference in length/height between the set of spikes 1 and spacing elements 2 is proportional to the thickness of the screed to be processed and the design of the stirring roller brush also includes the possibility to modify the length/height of the spacing elements 2 to adapt to the thickness of worked screed. This can typically be achieved by having the spacing elements 2 movable and adjustable on the set of spikes 1 as a prolongation of some of the spikes 1 of the set of spikes 1 .
  • the difference in length/height between the spacing elements 2 and the set of identical spikes 1 is at least smaller than the thickness of the screed, to ensure that the shorter spikes, in this case spikes 1 , are stirring and remixing the surface of the screed to eliminate heterogeneities.
  • the design of the roller brush enables the short spikes 1 to sink some millimetres into the screed (2mm - 5 mm).
  • the number of spacing elements 2 in relation to the number of spikes 1 in the set of identical spikes 1 can be advantageously adjusted to the grade of used aggregate.
  • the number of spikes 1 in the set of identical spikes 1 is selected so as to ensure homogeneous stirring of the screed surface, while avoiding that the larger aggregate particles get blocked between spikes. Therefore, the main distance between the spikes is always selected to be larger than the biggest particles in the screed (2-8 mm).
  • Density of spikes 1 (ends of the spikes) of the set of identical spikes 1 expressed as their density (density of strokes on the screed surface) projected on a given surface, ranges preferably between 1200 and 600 spikes per square meter.
  • the spacing elements 2 are placed on top or at the location of the spikes of the set of identical spikes 1 .
  • the number and distribution of spacing elements 2 is selected so as to ensure that the working depth, depth of the penetration of the spikes 1 into the screed surface, is kept substantially constant. Some variations in said depth can exclusively be caused by unevenness or height differences on the base layer provided below self-levelling screed.
  • Density of the spacing elements 2 expressed as their density projected on the given surface defined by the spikes of the set of identical spikes 1 , ranges preferably between 120 and 60 spacing elements 2 per square meter.
  • spikes of the set of identical spikes 1 and spacing elements 2 are made of polymer.
  • Processing efficiency is increased if the motion of the roller brush is preformed in two mutually perpendicular directions.
  • the stirring roller brush according to the invention basically eliminates any laborious work of processing/levelling the screed, as the entire weight of the tool, roller, is born by base layer. Also, the segregation of aggregates is eliminated, thus minimizing the occurrence of shrinkage cracks in the screed. Therefore, fundamental defects of the screed are minimized so the need to remove defect screed is minimized and thus consequent damages are prevented.
  • the screed worked by the stirring roller brush according to the invention matures evenly through its entire thickness, whereby the need to spray the worked surface of the screed with a protective spray is avoided, moisture evaporates evenly from the entire surface. Furthermore an additional advantage is the possibility to reduce the thickness of the screed by at least 5mm with no negative effect on its function - carrying capacity.
  • the spacing elements 2 as they are passing through the entire thickness of the worked screed also ameliorate distribution of aggregate particles within the entire thickness below the surface of the screed.
  • Stirring roller brush according to the present invention can be used preferably for working - levelling of self-levelling screeds in building industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Brushes (AREA)
  • Massaging Devices (AREA)
EP12191151.5A 2011-11-04 2012-11-02 Rührende Walzenbürste Withdrawn EP2589727A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SK50099-2011U SK6208Y1 (sk) 2011-11-04 2011-11-04 Levelling roller for leveling screeds

Publications (2)

Publication Number Publication Date
EP2589727A2 true EP2589727A2 (de) 2013-05-08
EP2589727A3 EP2589727A3 (de) 2017-06-21

Family

ID=45768673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12191151.5A Withdrawn EP2589727A3 (de) 2011-11-04 2012-11-02 Rührende Walzenbürste

Country Status (2)

Country Link
EP (1) EP2589727A3 (de)
SK (1) SK6208Y1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227056A1 (de) 1982-07-20 1984-01-26 Johann 7141 Schwieberdingen Steinbach Vorrichtung zum vorbereiten von betonschichten fuer einen glattstrich
US6350083B1 (en) 1999-05-03 2002-02-26 Tod Paladeni Powered roller screed

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US594732A (en) * 1897-11-30 Animal-cleaning device
DE212464C (de) *
US4966490A (en) * 1989-11-13 1990-10-30 Hodson James V Apparatus for use in applying a thin resinous coating to existing surfaces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227056A1 (de) 1982-07-20 1984-01-26 Johann 7141 Schwieberdingen Steinbach Vorrichtung zum vorbereiten von betonschichten fuer einen glattstrich
US6350083B1 (en) 1999-05-03 2002-02-26 Tod Paladeni Powered roller screed

Also Published As

Publication number Publication date
SK500992011U1 (sk) 2012-03-02
SK6208Y1 (sk) 2012-08-06
EP2589727A3 (de) 2017-06-21

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