DE202011108479U1 - Cleaning device for cleaning floor and edge surfaces - Google Patents

Abstract

Cleaning device for cleaning floor and edge surfaces, with a chassis (1), which forms an essentially inverted bowl-shaped chassis, on which a drive motor (2) with an essentially vertical drive shaft is fastened, which extends through an upper surface of the chassis (1) extends through, the chassis (1) being carried by at least two wheels (3, 4) and having an operating handle (6), the drive shaft (12) of the motor () extending under the surface of the chassis (1). 2) a rotating cleaning element, in particular a plate brush (30, 31), characterized in that the cleaning device has at least three wheels (3, 4, 5), two of which (3, 4) on opposite sides of one in the direction of travel extending longitudinal axis of the cleaning device and at least one of these two wheels (3) has devices (13, 16-18) for height adjustment relative to the chassis (1) in order to e To achieve an inclined position of the disc brush (30, 31).

Description

The invention relates to a cleaning device for cleaning floor and edge surfaces mentioned in the preamble of claim 1 Art.

The problem of weeds is taking on ever larger dimensions of surfaces and edges that are not accessed by people or driven by cars. The weed grows incessantly and damages the road surface and sidewalks through the roots. In the winter, the frost can smooth the pavement or paving stones and make the refurbishment costly.

Weeds and wild herbs can be found in many places over a large area - in security areas such as airports or military installations as well as in municipal facilities, on roads and on pavement surfaces. Plant species such as horsetail, field pansy, burr labweed, stinging nettle and common couch grass spread very quickly. Often they are difficult to combat - especially without herbicides or a wire brush.

Wire brushes are used to clean larger areas of weeds and dirt so far on relatively large machines or on jibs such machines, as for example in the EP 0 692 577 is described. Such machines can not be used at many locations because of their size and cost.

The invention is based on the object to provide a cleaning device of the type mentioned, which has only small dimensions with cost-effective construction and thus opens up additional applications.

This object is achieved by the features specified in claim 1.

Advantageous embodiments and further developments emerge from the subclaims.

Although the cleaning device according to the invention is described in particular for use with wire brushes for the removal of weeds and wild herbs, it is also suitable for use with other cleaning elements and generally for cleaning purposes, as will be described in more detail.

The cleaning device according to the invention for cleaning floor and edge surfaces has a chassis aud, which forms a substantially inverted bowl-shaped chassis, on which a drive motor is fixed with operating substantially vertical drive shaft extending through an upper surface of the chassis. The chassis has an operating handle for manual guidance of the device.

The extending under the surface of the chassis drive shaft of the motor carries a rotating cleaning element, in particular a disc brush, which is interchangeable and can be replaced by other cleaning elements.

The cleaning device has at least three wheels rotatably mounted on the chassis, of which two wheels are arranged on opposite sides of a longitudinal axis of the cleaning device extending in the direction of travel. At least one of these two wheels has means for adjusting the height relative to the chassis in order to achieve an inclined position of the plate brush or another cleaning element.

According to one embodiment, the device has two rear wheels and a single front wheel, wherein the means for height adjustment allow adjustment of the altitude of the left in the direction of the rear wheel. This is based on a direction of rotation of the drive shaft of the motor, which takes place from the top of the engine in a counterclockwise direction.

However, it is also an embodiment possible in which the device has two front wheels and a single rear wheel, wherein the means for height adjustment allow adjustment of the altitude of the left front wheel.

The single wheel, for example, the front wheel is preferably switched on or extended to adjust the altitude of the chassis via a spindle drive up and down.

Here, it is preferably provided that the spindle drive via an angle gear and a connecting rod with a rotatably mounted on the operating handle crank for precise adjustment of the height of the front wheel is provided.

The operating handle can be adjustably mounted in its angular position on the chassis.

Since most drive motors have a relatively high rotational speed, it is provided according to a preferred embodiment of the invention that the drive of the cleaning element takes place via a reduction gear.

For this purpose, the drive motor may have a drive shaft extending below the surface of the chassis, the end part of which has a V-belt pulley fastened thereto in a rotationally fixed manner and a pivot bearing for a bearing plate for the cleaning element wearing. The mounted on the pivot shaft on the drive shaft bearing plate carries a pulley, which has a larger diameter than the pulley of the drive shaft. Attached to the chassis is an end of a pivoting tensioner arm, the other end of which is biased away from the drive shaft by a spring. This idler arm carries two idler pulleys and a V-belt extends from the V-pulley to the first idler pulley, then to the pulley of the bearing plate and from the pulley to the second idler pulley back to the drive pulley pulley.

Preferably, the deflection pulleys are arranged on the tensioning roller arm with their axes converging downwards, wherein the V-belt grooves of the deflection pulleys on the side facing away from each other in the high position of the pulley of the bearing plate, while the mutually facing groove portions of the deflection pulleys in the Height of the V-belt pulley of the drive shaft are.

In this way, a compact design of the reduction gear results in high reduction.

The cleaning elements, for example in the form of a disc brush with bristles, can be removably attached to the underside of the bearing plate.

Preferably, the cleaning elements can be fastened latchable to the bearing plate via a tool-free attachment.

The invention will be explained in more detail below with reference to embodiments shown in the drawing.

In the drawing show:

1 a perspective view of an embodiment of the cleaning device for cleaning floor and edge surfaces;

2 a left side view of the embodiment of the device according to 1 ;

3 a plan view of the chassis of the embodiment of the device according to 1 with the drive motor removed;

4A a rear view of the device after the 1 to 3 with an inclined chassis;

4B a left side view of the device in the position after 4A ;

4C an enlarged left partial side view of the device in the position after 4A ;

5A a rear view of the device with horizontal position of the chassis.

5B a left side view of the device in the position after 5A ;

5C an enlarged left partial side view of the device in the position after 5A ;

6 a partial view of an embodiment of the drive for the plate brush;

7 a rotated by 90 ° view of the embodiment according to 6 ,

The illustrated in the drawings embodiment of the cleaning device has a generally with 1 designated chassis on which a drive motor 2 wearing.

The drive motor 2 is preferably in rubber vibration free on the chassis 1 stored, with its drive shaft 12 extending perpendicular to the bottom surface or at a slight inclination thereto.

The drive motor 2 drives a bristle with it 30 carrying plate brush 31 ( 5 and 6 For example, with an inclination of, for example, 5 ° slope, as will be explained in more detail.

A protective cover shown only schematically 32 covering the area below the chassis 1 covering on the left side and the front side prevents stones, grass and the like from being thrown into the street and damaging cars or injuring third parties. The tarpaulin 32 can over trusses 19 or other suitable means at a distance from the circumference of the chassis 1 to be ordered.

On top of the rear end of the chassis 1 is a recording 11 for a general with 6 designated guide rail 6 fastened, which is adjustable via fastening screws in two or more positions in its inclination.

The chassis 1 runs in the direction of left and right rear wheels 3 . 4 and a height-adjustable front wheel 5 ,

The front wheel 5 is at the bottom of a guide tube 7 via a threaded spindle arranged therein, via an angle gear 8th and over a connecting rod 10 with a crank 9 , which is ergonomically mounted on the guide rail, adjustable to the millimeter in height. Thus, the plate brush 31 be adjusted to the surfaces to be cleaned and the wear of the steel braids 30 be reduced.

The left rear wheel 3 is via an adjustment lever 13 lockable in at least two positions in its altitude compared to the chassis 1 adjustable, so that the chassis 1 From inclinations to a horizontal position can be adjusted without tools, causing the disc brush 31 , For example, a weed brush, is adjustable by an edge cleaning on a surface cleaning.

For this purpose, the shaft 15 the left rear wheel 3 between on the chassis 1 pivotally mounted trailing arms 12 . 18 be attached, of which the chassis 1 adjacent trailing arm 12 a part of an angle lever 12 . 13 that forms around a pivot point 18 on a bearing plate fastened to the chassis 14 is pivotable.

The angle lever can be latched on at least two positions, the different elevations of the mounted at the other end of the angle lever wheel 3 opposite the chassis 1 correspond. Other height adjustment devices for the left rear wheel may also be used.

The right rear wheel 4 is at a fixed position on the chassis 1 screwed.

As this particular from the 5 and 6 recognizable drives the drive motor 2 the plate brush 31 via a belt transmission, which reduces the engine speed by a factor of 5-6. This is how the disc brush turns 31 at a normal engine speed of 3000 min- between 500-600 min-1. This has the advantage that the steel bristles 30 wear considerably less than fast running bristles. Similarly, the lower speed reduces the risk of falling rocks, making this device suitable for working on the road in flowing traffic. Similar devices operate at high speeds or are hydraulically powered devices that are very large.

The in the 5 and 6 shown drive shaft 12 of the drive motor 2 drives via a rotationally fixed to the drive shaft 20 connected V-belt pulley 20 a V-belt 24 on, over two pulleys 25 running on a tensioner arm 26 mounted on one side and with a tension spring 27 are permanently stretched. The deflection pulleys 25 are at the ends of a flat V-shaped extension of the tensioner arm 26 attached with their axes of rotation at opposite angles to the vertical,

From the deflection pulleys 25 becomes the V-belt 24 deflected and moved down in its altitude, and the V-belt 24 then runs around a pulley 23 on a bearing plate 22 for the plate brush 31 , The bearing plate 22 is for example via a rolling bearing 21 on an extension of the V-belt pulley 20 or an extension of the drive shaft 12 freely rotatably mounted.

On the bearing plate 22 can the interchangeable plate brush 31 be firmly screwed. Due to the deflection of the V-belt, the disc brush rotates 31 with the different steel braids 30 for different road surfaces counterclockwise, so that the edges, areas on the road in the direction of travel are cleaned with traffic. The grass is stored on a side-mounted tarpaulin left on the unit clean and without chipping.

To work on the curb, the entire chassis 1 for example, 5 ° to the right (15 clock in the direction of travel) inclined. Since the brush plate rotates counterclockwise due to the deflection of the V-belt, it is necessary to work on the curb with the flowing traffic (ie counterclockwise). The surrounding protective tarpaulin 32 cleans the grass, stones and dirt clean and places them along the side of the device. Due to the inclination of the plate brush 31 the curbside is cleaned only in one segment area, so that the power of the engine brushed away even gross weeds and transported away sideways.

Since the space between the tarpaulin and the chassis is freely visible from above, and the tarpaulin does not extend into the actual work area, the operator has at all times free view of the disc brush, so that he can work exactly on one edge.

At the same time a stepless accurate height adjustment can be made, which is important for a low wear of the steel braids, as this ensures that the paving stones or other flooring not by coarse use of steel bristles 30 too badly damaged.

The at the operating beam 6 very ergonomic crank 9 allows via the angular gear 8th a millimeter accurate adjustment of the height adjustment of the front wheel 5 by means of in the pipe 7 arranged threaded spindle. The operator can always wear the steel braids 30 reduce to a great extent.

For cleaning and especially weed sweeping a surface can be the chassis 1 by tool-free adjustment of the left rear wheel 3 be changed from an inclination of, for example, 5 ° to a horizontal position. Thus cleans the plate brush 31 in one segment the front surface.

For transport, both the operating beam 6 be folded down without tools, as well as the connecting rod 10 is dismantled. The tarpaulin 32 can also be disassembled without tools. The dimensions of the device then allow transport in the car.

The plate brushes or other rotating cleaning elements can in addition to the described fastening by screws with a tool-free bayonet system on the bearing lath 22 be fastened, so that in a simple manner disc brushes or disc brushes of different systems for different activities can be used, for example plate brushes with 5 steel braids, alternatively flat wire braids or polypropylene or PP mixed with flat wire, plate brush with 10 pigtail receptacles for even greater cleaning power, disc brush with 1-2-3-row flat wire stock, disc broom mixed with PP / flat wire, disc brush with PP trim as radial broom for dirt sweeping, snow sweeping.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0692577 [0004]

Claims (11)

Cleaning device for cleaning floor and edge surfaces, with a chassis ( 1 ), which forms a substantially inverted cup-shaped chassis on which a drive motor ( 2 ) is mounted in operation with a substantially vertical drive shaft extending through an upper surface of the chassis ( 1 ), whereby the chassis ( 1 ) of at least two wheels ( 3 . 4 ) and a control handle ( 6 ), which extend below the surface of the chassis ( 1 ) extending drive shaft ( 12 ) of the motor ( 2 ) a rotating cleaning element, in particular a disc brush ( 30 . 31 ) carries, characterized in that the cleaning device at least three wheels ( 3 . 4 . 5 ), of which two wheels ( 3 . 4 ) are arranged on opposite sides of a longitudinal axis extending in the direction of travel of the cleaning device and at least one of these two wheels ( 3 ) Facilities ( 13 . 16 - 18 ) for height adjustment relative to the chassis ( 1 ) to an inclination of the plate brush ( 30 . 31 ) to reach. Device according to claim 1, characterized in that the chassis has two rear wheels ( 3 . 4 ) and a single front wheel ( 5 ) and that the facilities ( 13 . 16 - 18 ) for height adjustment, a setting of the altitude of the left rear wheel ( 3 ) enable. Device according to claim 2, characterized in that the devices ( 13 . 16 - 18 ) for height adjustment, a setting of the altitude of the left rear wheel ( 3 ) one on the chassis ( 1 ) at its inflection point about an axis ( 17 ) swiveling angle lever ( 12 . 13 ), a first to the chassis ( 1 ) on at least two positions latched arm ( 13 ) and a second arm ( 18 ), whose free oaths the left rear wheel ( 3 ) is rotatably mounted .. Apparatus according to claim 1, characterized in that the chassis comprises two front wheels and a single rear wheel and that the devices ( 13 . 16 - 18 ) to adjust the height adjustment of the altitude of the left front wheel. Apparatus according to claim 2 or 3, characterized in that the front wheel ( 3 ) for adjusting the height of the chassis via a spindle drive ( 7 - 10 ) is retractable and extendable up and down. Apparatus according to claim 5, characterized in that the spindle drive ( 7 - 10 ) via a bevel gear ( 8th ) and a connecting rod ( 10 ) with a on the operating handle ( 6 ) rotatably mounted hand crank ( 9 ) for adjusting the height of the front wheel ( 5 ) is provided. Device according to one of the preceding claims, characterized in that the operating handle ( 6 ) in its angular position adjustable on the chassis ( 1 ) is attached. Device according to one of the preceding claims, characterized in that the drive motor ( 2 ) one under the surface of the chassis ( 1 ) extending drive shaft ( 12 ), whose end portion has a non-rotatably mounted V-belt pulley ( 20 ) as well as a pivot bearing ( 21 ) for a bearing plate ( 32 ) for a disc brush ( 30 . 31 ) carries that over the pivot bearing ( 21 ) on the drive shaft ( 12 ) mounted bearing plate ( 22 ) a pulley ( 23 ), which has a larger diameter than the V-belt pulley ( 20 ) of the drive shaft ( 12 ), that on the chassis one end of a pivotable tensioner arm ( 26 ) is attached, the other end via a spring ( 27 ) from the drive shaft ( 12 ) is biased that the tensioner arm ( 26 ) two deflection pulleys ( 25 ) rotatably and that a V-belt ( 24 ) starting from the V-belt pulley ( 20 ) to the first deflection pulley ( 25 ), then to the pulley ( 23 ) of the bearing plate ( 22 ) and the pulley ( 23 ) via the second deflection pulley back to the V-belt pulley ( 20 ) of the drive shaft extends. Apparatus according to claim 8, characterized in that the deflection pulleys ( 25 ) on the tensioner arm ( 26 ) are arranged with their axes converging downwards, wherein the V-belt grooves of the deflection pulleys on the side facing away from each other in the high position of the pulley ( 23 ) of the bearing plate ( 22 ), while the mutually facing groove portions of the deflection pulleys in the height position of the V-belt pulley ( 20 ) of the drive shaft ( 12 ) lie. Device according to one of the preceding claims, characterized in that a disc brush ( 31 ) with bristles ( 30 ) replaceable at the bottom of the bearing plate ( 22 ) is attached. Apparatus according to claim 9, characterized in that the plate brush ( 30 . 31 ) is fastened to the bearing plate latchable via a tool-free attachment.

Images