DISH BRUSH FOR SWEEPING MACHINES WITH DEMOUNTABLE SEGMENTAL PLATE ELEMENTS PROVIDED WITH BRUSH PLUGS

Abstract

 The invention relates to a further developed dish brush (1) for sweeping machines, wherein a central base plate (2) has in top view the form of a polygon with raised contour plates (4). Said raised contour plates (4) are mutually coupled with radially I-shaped radial profiles to take with a sliding movement the demountable segmental plate elements (3). So, a very efficiently constructed and environmentally friendly dish brush for sweeping machines is developed.

Description

[0001] The present invention concerns a demountable dish brush for sweeping machines for cleaning, brushing and sweeping paved surfaces such as streets, squares etc. The dish brush is built up with a central dish formed plate with a polygonal contour. Said polygonal contour is executed in such a way, that with an easy handling, segmental plate elements provide with a set brush plugs are mountable or demountable on or from the central base plate of the dish brush.

Background of the invention

[0002] A somewhat similar dish-shaped brush for sweeping machines is known from the European Patent Application EP 1 623652 A1, filed 23-07-2004, titled: "Rotating Dish-Shaped Brush for Sweeping Machines", applicant Koti Onroerend Goed B.V., Weert, The Netherlands; Inventor M.J.R.L. Huybreckx, Weert, The Netherlands.

[0003] This patent application described a special gutter brush for sweeping machines. Mentioned brush is mountable or demountable in a rather complicated and time consuming sense. The brush is built up as a complicated constructed ring element, in which the individual brush elements are pushed with a sliding movement. Said brush elements are executed as a single plug with a connecting head plate for said sliding movement. When al the single plugs are placed, the ring with the plugs are covered with a circular plate and locked up with screws. To replace the plugs, the whole dish brush has to be demounted, which is a time consuming drawback and the construction of the dish brush is also very costly.

[0004] So, this embodiment of the dish-shaped brush does not have the inventive characteristics of our newly developed dish brush with a central dish plate executed as a polygon with more hook points, in which in between a complete set of brush plug can be mounted or replaced in a row in a very simple way.

[0005] Then, a second patent application EP 3 560 378 A1 is known and relevant in some way. This European Patent Application was filed with a Priority Dutch Patent Application NL 104 284 2 dated 25-04-2018; titled: "Dish Brush for Sweeping Machines". The Applicant is Koti Onroerend Goed B.V., Inventor M.J.R.L. Huybreckx, Weert, The Netherlands.

[0006] In this patent application, two embodiments of the dish brush for the conventional sweeping machines for cleaning paved surfaces are described. The two types of dish brushes are only mountable and demountable as a whole. Not the individual brush plugs, because of the welded joints. So, if the brush plugs are worn out, the dish brush is completely lost, as well as the steel central plate. In an environmental sense this is a considerable drawback. Another drawback is the big volume and the weight of the complete dish brush, which has to be transported to the user.

[0007] So, our invention overcomes mentioned drawbacks and has very positive characteristics, wherein the heavy steel central base plate is usable again and again after demounting the worn out segmental plate elements with their brush plugs. This inventive embodiment lowers the costs when using and transporting only the segmental plate elements. The transport volume is also much lower, because only segmental plate elements with their brush plugs have to be send to the user. So, lower transport costs.

Object of the invention

[0008] The aim of the invention is to produce and provide very effective and environmentally friendly dish brushes for sweeping machines at a lower price as usual.

Summary of the invention

[0009] Dish brush for conventional sweeping machines to clean, brush or sweep paved surfaces (streets, squares, etc.), wherein the central base plate with contour D and thickness d at the raised contour is provided with demountable sweeping elements in which mentioned central base plate has a polygonal contour and at the hook points are provided with I-shaped radial profiles with their axis directed to the centre of said central base plate, wherein mentioned demountable segmental plate elements with a trapezium surface are slidable between the I-shaped profiles with their brush plugs and locked up with a single screw bolt in a single borehole.

[0010] The advantage is that the intermediate brush plugs of the set brush plugs a circular and perpendicular thereon oscillating brush movement executes over the paved surface. This movement increases the quality of the brushing in a serious way as appears in practical use. Because of the fact that only the demountable segmental plate element with the set of brush plugs has to be demounted and a new one has to be mounted, the central base plate can be used again and again. So, in practice the costs of brushing are lower than with the usual dish brushes.

[0011] Furthermore, the dish brush according to the invention is developed in such a way characterized in that the polygonal contour of the central base plate has n angular hook point, which depend of the diameter D, wherein n is 4 till 10, for D is up to 500 mm, preferably n=6, wherein the diameter D is between 240 mm and 920 mm, preferably mostly up to 500 mm.

[0012] The advantages are, that for each used diameter D a suitable polygon contour can be fabricated with a minimum loss of material.

[0013] Then the dish brush according to the invention is further developed in such a way, that the central base plate has a raised contour with an angle α preferably up to 30 degrees, wherein the demountable segmental plate elements are slidable to mount between the I-shaped profiles and fixed with mentioned screw.

[0014] In practical sense, the advantage is a simple mounting and mechanically strong and stiff connection.

[0015] Furthermore, the dish brush according to the invention is developed in such a way, that the material of the central base plate is a steel plate with a thickness d between 4 mm and 10 mm, preferably 5 mm for D is up to 500 mm, wherein the material of the separately demountable segmental plate elements is steel with a thickness d between 3 mm and 6 mm, preferably 4 mm.

[0016] The advantages are a minimal use of material and therefore a minimal weight and volume in transport to the user.

[0017] Then, the dish brush according to the invention is further developed in such a way, that the material of the separately demountable segmental plate elements is a plastic, being for instance polypropylene (or other material, see description in the text).

[0018] The advantage is a further weight reduction of the segmental plate elements, which is advantageous for transport to the user.

[0019] Furthermore, the dish brush according to the invention is further developed in such a way, that said brush plugs are executed as flat sweeping elements with a length between 220 and 300 mm, preferably 260 mm and with a U-form metal holder connected with the demountable segmental plate elements.

[0020] The advantage is, that usual sweeping elements are used.

[0021] Then the dish brush according to the invention is further developed in such a way, that the demountable segmental plate elements are provided with segmental rounded plate part on the outside to give the dish brush a total circular diameter D, wherein the thickness d is the thickness and the material of the segmental plate elements.

[0022] The advantage is that scouring against kerbstones does not damage the hook points of the polygonal contour of the central base plate.

Brief description of the drawing.

[0023] A preferred embodiment of the present invention will now be described with reference to the accompanying drawing in which;

Figure 1 shows a view in oblique projection of the complete dish brush according to the invention;

Figure 2 shows a top view of the dish brush of figure 1 and over the line II-II;

Figure 3 shows a top view of the central base plate with a polygonal contour (hexagonal in this case) according to a preferred embodiment of the invention;

Figure 4 shows a side view of the central base plate of figure 3 over the line IV-IV;

Figure 5 shows an oblique projection of the demountable segmental plate element with a trapezium surface according to the invention; and

Figure 6 also shows an oblique projection of the demountable segmental plate element with trapezium surface and a further segmental plate to give the total dish brushes of the figures 1 and 2 a circular contour in top view.

[0024] Figure 1 represents a view in oblique projection the complete dish brush 1 according to the invention. The complete dish brush 1 consists of two parts, the central base plate 2 and the demountable segmental plate elements 3. The central based plate had raised contour edge plates 4 and with the welded fixed I-shaped radial profiles 5 forms the hook points 6 for precisely sliding the demountable segmental plate elements 3 with their trapezium surface. Said central base plate 2 and said demountable segment plate elements 3 are fixed together with a single screw 7 in boreholes 8.

[0025] Mentioned I-shaped radial profiles 5 are directed to the centre 9 of said central plate 2. The demountable segmental plate elements 3 have a set brush plug 10 positioned in a row.

[0026] In figures 2 and 3 the polygonal contour of the centre base plate 2 is reproduced in a sharp way. The same parts always have the same numbers. Both figures 2 and 3 are top views of the central base plate 2. Figure 2 shows a top view over the line II-II from figure 1, the whole dish brush 1 with the central base plate 2 and the demountable segmental plate elements 3. Figure 3 only shows the central base plate 2 with the raised edge plates 4.

[0027] Figure 4 shows a side view over the line IV-IV of figure . This figure shows the radial directed I-shaped profiles 5.

[0028] Figure 5 shows an oblique projection of the demountable segmental plate elements 3 with the fixed brush plugs 10 with the metal holders at the bottom side. These brush plugs 10 and the demountable segmental plate elements 3 and are also made of PA (Polyamide/Nylon), PBT (Polybutylenetereftalaat), PE (Polyethylene), PP (Delrin/Polyacetate), PVC (Polyvinylchloride), Rubber, Steel, RVS, Copper, Bronze.

[0029] Figure 6 shows an oblique projection of the demountable segmental plate element 3 with a trapezium surface and a further fixed segmental plate element 11 to provide the dish brushes of figures 1 and 2 with an overall circular contour.

[0030] Finally it has to be emphasized, that a preferred embodiment of the invention is described and that it is self-evident that further modifications are possible without leaving the scope of the invention.

Claims

1. Dish brush for conventional sweeping machine to clean, brush or sweep paved surfaces (streets, squares, etc.), wherein the central base plate with contour diameter D and the thickness d at the raised contour is provided with demountable segmental plate elements provided with brush plugs, characterised in that, mentioned central base plate (2) has a polygonal contour and at the hook points (6) are provided with I-shaped radial profiles (5) with their axis directed to the centre (9) of said central base plate (2), wherein mentioned demountable segmental plate elements (3) with a trapezium surface are slidable between the I-shaped profiles (5) with their brush plugs (10) and locked up with a single screw bolt (7) in a single borehole (8).

2. Dish brush as in claim 1, wherein said polygonal contour of the central base plate (2) has n angular hook points (6) dependent from said diameter D, wherein n is 4 until 10, for D is up to 500 mm preferably n=6.

3. Dish brush as in claim 1-2, wherein the central base plate (2) has a raised contour with an angle α preferably up to 30 degrees, wherein the demountable segmental plate elements (3) are slidable to mount between the I-shaped profiles (5) and are fixed with said screw (7).

4. Dish brush as in claim 1-3, wherein the material of the central base plate (2) preferably is made of steel with a thickness between 4 mm and 10 mm, preferably 5 mm for D is up to 500 mm.

5. Dish brush as in claim 1-3, wherein the material of the separately demountable segmental plate elements (3) is steel with a thickness d between 3 mm and 6 mm, preferably 4 mm.

6. Dish brush as in claim 1-3, wherein the material of the separately demountable segmental plate elements (3) is a plastic being for instance a polypropylene or other material (see description).

7. Dish brush as in claim 1, wherein said brush plugs (10) are executed as flat sweeping elements with a length between 220 mm and 300 mm, preferably 260 mm and with a U-form metal holder (12) connected with the demountable segmental plate elements (3).

8. Dish brush as in claim 1, wherein said diameter D is between 240 mm and 920 mm, preferably mostly up to 500 mm.

9. Dish brush as in claim 1-9, wherein said demountable segmental plate elements (3) are provided with a segmental rounded plate part (11) on the outside to give the dish brush a total circular diameter D, wherein the thickness d is the thickness of the segmental plate elements (3).

Drawing