Technical expansion of the sweeping volume of block brushes for carrier vehicles to increase the efficiency of the sweeping process.

Abstract

2.1. A better sweeping result is achieved by capturing as much debris as possible. Collection areas for block brushes are currently designed in such a way that the debris tends to be directed towards the center of the block brush, so that it is forced out at the rear center due to increased pressure, thus requiring the sweeping cycle to be restarted frequently. 2.2. One solution for capturing a larger volume of sweepings is to create a fixed collection chamber, a collection element (1), in front of the base element (2), which takes the third dimension into account. The sweepings can accumulate upwards (3). The collection chamber is blocked in the middle (4) but open on both sides (7). The pressure of the sweepings is counteracted by additional rows of brushes behind the collection chamber (6) in the base element (2). 2.3. For example, 12 long brush rows are placed in the base element (6), and in the sweeping direction, there are, for example, 6 narrow brush rows in the collection element (4, 5). Depending on the broom length (= working width), e.g., 2.50 m: 20 cm (5) and wider brush rows of 70 cm (4) in the middle. This tends to direct the pressure to the two outer sides and collect a relatively large amount of debris. More rows of bristles also ensure that more debris is carried along.

Description

[0001] Mechanical and physical considerations lead to the conclusion, and practical sweeping tests have shown, that the arrangement of the bristle rows most closely approximates maximum sweeping efficiency when the debris is distributed as evenly as possible across the width of the sweeping corridor, rather than being directed towards the center of the brush width by the brush design, causing it to exit the brush area first at the rear. With an even distribution, the debris only exits at the rear when the pressure across the entire width becomes too great, i.e., only later.

[0002] The point at the back where the sweepings emerge from the center is therefore the bottleneck when sweeping with a block broom. The sooner this happens, the shorter the sweeping cycle, the more often the sweeping process has to be restarted, the greater the wear on the bristles, the longer the overall sweeping process takes, the more labor-intensive the work is, and greater wear and tear on the vehicles is to be expected.

[0003] The heavier the debris and the larger the pieces or particles, the greater the pressure on the center of the broom's width. Conversely, the lighter and finer the debris, the more of it can be pushed ahead of the broom because the slippage moment is lower. This allows a larger volume of debris to be pushed forward without it passing through the center to the rear.

[0004] The optimal sweeping performance of a block broom therefore depends primarily on how many sweeping cycles are required to collect the typical debris present and whether as much debris as possible from the sweeping corridor is captured. All influencing factors should be considered with appropriate weighting.

[0005] The sweeping result can be improved by pushing as much debris as possible in a single sweeping cycle, also known as the displacement distance. Since the displacement distance depends primarily, as described, on the debris passing through the center at the rear and exiting from the sides, measures can be taken, firstly, to ensure that the center of the brush is not overloaded more than the sides, and secondly, to delay the lateral exit of debris and collect it in front of the brush using appropriate means.

[0006] Anyone who has previously used a conventional broom with a dustpan and brush has often faced significant disadvantages. If the rows of bristles were arranged in such a way that they directed the debris towards the center of the broom, meaning that the increased pressure created by the central accumulation of debris was directed backwards, the debris would first emerge from the center at the back of the broom. The sweeping process then had to be restarted. The more the debris was concentrated towards the center, the greater the backward pressure in the center.

[0007] One determining variable is the volume of debris to be swept. As illustrated in the drawing, one solution for achieving optimal sweeping results is to create a fixed collection chamber, a collection element (1), in front of the base element (2), which takes the third dimension into account. The debris can then accumulate upwards (3). The problem of debris being forced towards the center is addressed by blocking the collection chamber in the middle (4) while leaving it open on both sides (5). Furthermore, the increased pressure caused by accumulated debris is counteracted by the addition of more rows of brushes behind the collection chamber in the base element (2).

[0008] For example, there are 12 long rows of bristles (from broom edge to broom edge) placed in the base element (6), and in the sweeping direction in front of them, there are for example 6 narrow rows of brushes in the collecting element (4,5).

[0009] Depending on the brush length (= working width; describes the contact area of ​​the brushes on the sweeping surface, minus the edge allowance), e.g., 2.50 m: 20 cm (5) and wider brush rows in the middle, 70 cm (4). This variant makes it possible, firstly, to direct the pressure of the sweeping material towards the two outer sides, secondly, to collect a relatively large amount of sweeping material, and thirdly, to carry more sweeping material due to more rows of bristles, thus sweeping more efficiently.

[0010] Another adjustment option is achieved by varying the number of bristle strips placed one behind the other. In principle, the forward thrust of the broom, and thus its sweeping ability, also depends on the total number of bristles, and therefore also on the number of brush strips, even for brooms based on the parallel bristle concept. Here, too, it is important to consider the relationship between the nature of the debris being swept, its weight, and the size of the individual pieces or particles, and the number of brush rows, the bristle density, and the sequence of the brushes equipped with different bristles. For heavy debris, 12 to 16 bristle rows in the base element are appropriate.

Claims

[1] Sweeping brushes for carrier vehicles (block brushes) which have an elongated body shape, forming a rectangle in top view, which move sweeping material forwards with fixed, longitudinally arranged strip brush rows, attached to a metal brush mantle by means of C-rails, characterized by , that in a pre-brush element (1) positioned in front of the base brush (2) the brush mantle has 2 openings (7) at the front, onto which two box-shaped storage spaces (3) sit upwards and thus enable a larger collection space volume, which is characterized by at least 12 brush rows up to 16 in the case of brush rows for high requirements due to heavy sweeping material, which develop an increased sweeping force and can thus withstand the increased pressure caused by accumulating sweeping material, in the sweeping direction behind the storage space of the pre-brush. [2] According to claim 1, additional space can be created in front of the block brush. An additional brush element, a collecting pre-brush element (1), is positioned in front of the block brush. It is an extension of the brush casing towards the front, with the pre-brush casing element being open at two points at the top so that downwardly open collection boxes (3), made of sheet steel, can be placed on the cutouts of the pre-brush casing, usually welded on. These collection boxes can have a square or rectangular shape when viewed from above, with three brush zones, each consisting of six rows of brushes (4 and 5) in a row, providing pushing action on the sides and center. This creates a collection space that gathers the sweepings in front of the actual brush block (2), the base element, thus minimizing the load on the center of the brush and directing additional sweepings upwards into the storage spaces of the attachment boxes. [3] The basic brush (2) according to claims 1 and 2 is equipped with additional rows of brushes that increase the pushing power behind the collecting pre-brush, so that the basic brush has 12-16 rows of brushes (6) available.

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