Dish brush for sweeping machines

Abstract

The invention concerns a dish brush (1, 11) for conventional sweeping machines for cleaning, brushing or sweeping paved surfaces, wherein special constructed sweeping elements (4) and steel cable plugs (5) both waste and weeds remove from different types of paved surfaces. The mentioned sweeping elements (4) are fastened with welds (8,9) from the top side of the raised contour edge (2) through slit openings (6,7) and the steel cable plugs (5) are fastened with a weld (10) from the bottom side of said contour edge (2). The advantage is a well applicable sweeping and weeds removing dish brush (1,11) and which can be manufactured in a very economical way.

Claims

1. Dish brush for mounting to a rotating vertical driving axle under a conventional sweeping machine for rotatable brushing, sweeping or cleaning paved surfaces, the dish brush comprising: a flat circular plate with a central mounting hole and a raised annular flange projecting radially upward from a perimeter of the circular plate at an angle alpha forming a top annular flange surface, a bottom annular flange surface and an outermost contour edge, the annular flange comprising a plurality of slit openings through the top annular flange surface and bottom annular flange surface and equally spaced at an angle beta relative to a center of the flat circular plate; a plurality of flat sweeping elements equally spaced and positioned to align with the plurality of slit openings and secured adjacent to the bottom annular flange surface, each of the plurality of flat sweeping elements secured to the bottom annular flange surface with a weld through at least two of the slit openings from the top annular flange surface; and a plurality of steel cable plugs equally spaced and positioned between adjacent ones of the flat sweeping elements and adjacent slit openings and secured adjacent to the bottom annular flange, each of the plurality of steel cable plugs secured to the bottom annular flange surface with a weld located only on the bottom annular flange surface, wherein the plurality of flat sweeping elements and the plurality of steel cable plugs project radially outward from the outermost contour edge and downward from bottom annular flange surface.

2. Dish brush as in claim 1, wherein the angle alpha is between 20 and 40 degrees, preferably 30 degrees.

3. Dish brush as in claim 1, wherein the outermost contour edge has a diameter between 240 mm and 640 mm, and the central mounting hole has a diameter between 175 and 225 mm.

4. Dish brush as in claim 1, wherein the angle beta is between 7 and 15 degrees.

5. Dish brush as in claim 1, wherein the flat circular plate has a thickness between 2 and 6 mm.

6. Dish brush as in claim 1, wherein said flat sweeping elements have a length between 240 mm and 280 mm, and each of said flat sweeping elements comprises a layer or bundle of strips of about 32 pieces with a strip thickness of about 3.5 mm.

7. Dish brush as in claim 1, wherein the steel cable plugs have a length, which is between 240 and 280 mm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is hereafter explained by the description of two preferred embodiments, reproduced in the drawing; in which

(2) FIG. 1 shows a view in oblique projection and at a small scale of a preferred embodiment of the dish brush for sweeping activities;

(3) FIG. 2 shows a top view at a larger scale of the dish brush of FIG. 1;

(4) FIG. 3 shows a cross-section over line III-III of FIG. 2;

(5) FIG. 4 shows a view in oblique projection at a small scale of a second embodiment of the dish brush owing to the invention, wherein between the sweeping elements steel cable plugs are applied;

(6) FIG. 5 shows a top view at a bigger scale of the dish brush of FIG. 4;

(7) FIG. 6 shows a cross-section across line VI-VI of FIG. 5;

(8) FIG. 7 a cross-section of the dish brush according to the invention, wherein the sweeping elements are welded radially fixed from the topside through the slit openings in the raised contour edge; and

(9) FIG. 8 idem to FIG. 7, but now shows the fixed welding of a steel cable plug from the bottom side against the contour edge of the circular steel plate.

(10) In FIG. 1 is shown a view in oblique projection and at a small scale form a preferred embodiment of the dish brush 1 for sweeping activities. At this scale, the slit openings 6, 7 are indicated with stripes in the contour edge 2. The flat sweeping elements 4 are placed from the bottom side against the raised contour edge 2 of the circular plate 3 and are welded from the top side through the slit openings 6,7.

(11) In FIG. 2, for reasons of explanation, is shown at a larger scale a top view of the dish brush 1. Herewith the radial angles beta () are indicated to place the elongated sweeping elements 4 with length L1. Above these elements 4 the slit openings 6, 7 are placed for fixing by welding from the top side (see also FIG. 3). The angle alfa () is usually about 30 degrees, but can be adapted according to specific applications.

(12) Similar parts in FIG. 3 are indicated with the same numbers. The lengths L1 and L2 are indicated specifically in the claims and can be adapted accordingly.

(13) In FIG. 4 is shown at a small scale an oblique projection of a second embodiment of the dish brush 11. In this embodiment equally distanced sweeping elements, such as steel cable plugs 5, placed between the flat sweeping elements 4, are welded against the contour edge 2 from the bottom side. With this embodiment of our invented dish brush 1, 11 both weeds as well as waste can be removed from a paved surface.

(14) In FIG. 5 is shown a top view of a second embodiment of the dish brush 11 of FIG. 4. As shown in FIG. 5, fixing bolt holes 12 are indicated in the central circular plate 2. The angles in the middle are also indicated with beta ().

(15) FIG. 6 shows a cross-section over the line VI-V of FIG. 5. Similar parts are indicated with the same numbers.

(16) In FIG. 7 is shown a cross section of the dish brush 1, wherein the flat sweeping elements 4 are fixedly welded from the top side at the contour edge through the slit holes 6,7.

(17) In FIG. 8 is shown a cross section of the dish brush 11 on the spot of the steel cable plug 5, which is fixed with a weld 10 against the bottom side of the raised edge 2.

DETAILED DESCRIPTION

(18) However, it is obvious that modifications and/or additions to the aforementioned dish brush can be made, but these shall remain within the field and scope of the invention.