DE102018104749A1 - sweeper - Google Patents

Abstract

There is provided a sweeping machine comprising a chassis (12), at least one broom (32) disposed on the chassis (12) and a height adjustment device (56) associated with the at least one broom (32) and via which a height position of the at least one broom (32) relative to the chassis (12) is adjustable, wherein the height adjustment device (56) has an operating element (78) which is rotatably mounted, wherein with the at least one broom (32) a guide element (60 ), which is rotatably mounted on a bearing region (42) of the chassis (12), wherein at least one driver (62) is non-rotatably mounted on the guide element (60), the guide element (60) via the at least one driver (62). is coupled to the operating element (78), and a rotation of the operating element (78) via the at least one driver (62) causes a rotation of the guide element (60), and wherein a Bahnf is guide (84) for the at least one driver (62) provided, is carried out a vertical displacement of the at least one driver (62) and thereby the guide member (60) relative to the chassis (12) upon rotation of the at least one driver (62).

Description

The invention relates to a sweeper, comprising a chassis, at least one broom, which is arranged on the chassis, and a height adjustment, which is associated with the at least one broom and over which a height position of the at least one broom is adjustable relative to the chassis.

The height adjustment device is associated in particular with a side brush.

From the DE 10 2009 047 368 A1 a sweeping attachment device for a vehicle is known, which comprises a holding device with at least one swivel arm, on which at least one broom is seated, wherein the holding device is height-adjustable relative to the vehicle.

From the DE 10 2007 058 623 A1 a floor cleaning device with a side brush is known, wherein the side brush is coupled to an impeller by means of a gear transmission.

From the DE 202 11 440 U1 is a sweeper with an approximately horizontally disposed disc brush and with a arranged below the disc brush impeller, which is movable between a raised and a lowered position known.

From the EP 1 151 715 A2 is a motor sweeper known.

From the EP 0 866 172 A2 is known a suction sweeper.

From the EP 0 686 371 A1 is a sweeper with a removable Zuführbürste known, which is mounted in working position at a front corner portion of a housing on a Auslegearm.

From the DE 195 07 683 A1 is a sweeper with a lateral feed brush known.

From the DE 37 40 215 A1 For example, there is known a device for cleaning a road with a brush that can revolve about its axis and that is carried by carrying wheels or the like, which in turn are height adjustable by means of an adjusting mechanism to properly adjust the contact between the brush and the surface to be cleaned.

From the US 4,658,458 For example, a rotary brush sweeper and a brush height adjustment mechanism are known.

From the GB 1,104,300 Another ground sweeper is known.

From the US 798,845 is another sweeper known.

From the US 2,782,434 is also a Bodenkehrgerät known.

The invention has for its object to provide a sweeper of the type mentioned, which comprises at least one height-adjustable broom, wherein a dust-protected mechanism for the height adjustment is provided and / or an integration is realized in an overall design of the sweeper.

This object is achieved with the sweeper mentioned above according to the invention that the height adjustment has an operating element which is rotatably mounted, that with the at least one broom, a guide element is connected, which is rotatably mounted on a bearing portion of the chassis, wherein the guide member rotatably at least one driver is arranged, the guide element is coupled via the at least one driver to the operating element, and a rotation of the operating element via the at least one driver causes a rotation of the guide element, and that a web guide for the at least one driver is provided, wherein upon rotation the at least one driver is a height displacement of the at least one driver and thereby the guide member relative to the chassis.

In the solution according to the invention, a broom and in particular a side brush can be arranged in a height-adjustable manner in a simple manner relative to the chassis. This makes it possible to adapt to special cleaning conditions or it can be a wear on the broom compensated in a simple manner.

The arrangement of the storage area on the chassis results in a simple integration. In particular, no swivel arm or a height-adjustable support wheel must be provided.

The height adjustment device can be formed with a relatively small number of components. In particular, the control element, the driver and the web guide can be made of plastic materials.

Furthermore, the height adjustment device can be formed in a simple manner so that the components that are only relevant for operation and operation are visible to the outside. This results in a good dust protection for the height adjustment. In particular, the guide element, the driver and the web guide can be arranged dust-protected in a simple manner.

In one embodiment, the bearing area for the guide element is at least partially formed by the web guide for the at least one driver. This results in a large bearing surface for a rotary guide of the guide element.

It is particularly advantageous if the web guide is designed as a helical guide, which in particular has a guide curve which winds around a jacket of a cylinder with a constant or variable pitch. It can thus be easily achieved a coupling between a rotation and an axial displacement. This in turn can be realized in a simple manner via a rotation of the control element, a height adjustment of the broom relative to the chassis.

In one embodiment, the web guide has a first support element for the at least one driver, which is arranged or formed non-rotatably on the chassis. This results in easy integration into the chassis and easy integration into the overall design of the sweeper. The driver can be supported via the first support element.

It is favorable if the first support element has an interior in which the guide element is positioned, wherein in particular the guide element is rotatable relative to the first support element. This results in a structurally simple, compact design. It can be arranged dust-protected the corresponding mechanism in a simple manner.

In particular, it is favorable if the at least one driver is supported on the first support element with respect to the direction of gravity downwards and / or supported on a second support element with respect to the direction of gravity upwards when the sweeper is supported for proper operation on a substrate. This makes it possible to provide a guide contact of the driver with the first support element and / or the second support element, so that in particular a stepless height adjustment results in a corresponding height adjustment range.

It is also advantageous if the web guide comprises the second support element, which is supported in particular on the operating element. The second support element can be arranged fixed or loose on the operating element. This results in an optimized web guide for the at least one driver.

It is structurally favorable if the second support element is designed as a ring.

In one embodiment, the operating element (actuating element) has a connecting piece, which is immersed in an inner space of the second supporting element. This results in a compact structure. The number of components can be kept low.

In one embodiment, the operating element has a connecting piece, via which the at least one driver is coupled to the operating element. It can be achieved in a simple manner, a rotationally fixed coupling. Furthermore, a dust-protected mechanism for height adjustment can be realized in a simple manner.

It is advantageous if the guide element is immersed in the nozzle, wherein in particular an immersion depth is determined by a rotational position of the operating element. It can be achieved as a compact structure. A corresponding mechanism can be formed dust-proof.

In one embodiment, the neck is cylindrical. This results in a simple and compact design. Furthermore, it can thereby be positioned, for example, in a simple manner in the second support element with respect to the nozzle.

In one embodiment, the neck has at least one groove in which the at least one driver is positioned and via which the at least one driver with the operating element is rotatably coupled to the operating element. It can be so easy to assemble a rotary coupling between the control and the driver and thus reach the guide element. Furthermore, can be considered on the groove in a simple way a Höhenverschieblichkeit the driver.

In particular, the at least one groove extends over a height region of the neck, which is adapted to a height displacement of the at least one driver, and in particular the at least one groove is open at an end face of the nozzle. This results in a simple compact design with easy mountability of the height adjustment.

In one embodiment, the operating element has an annular region which surrounds the neck, wherein in particular the operating element is rotatably supported via the ring area at a further bearing area of the chassis. This results in a simple, compact construction. The ring area can also be used to position essential parts of a mechanism of the height adjustment dust-proof.

It is advantageous if the further storage area surrounds the storage area for the guide element in an annular manner in order to achieve a dust-proof design in a compact construction.

For the same reason, it is favorable if the further storage area surrounds a first support element of the web guide annularly. As a result, the first support element of the web guide can be positioned protected against dust.

In one embodiment, a retaining ring is positioned as a lift-off for the operating element on the neck. This can be prevented in a simple manner lifting the control upwards. The height adjustment can be mounted easily.

It is particularly advantageous if the operating element is mounted so as to be displaceable relative to a height direction on the chassis. This results in a simple compact design with easy operation.

It is advantageous if a spring device is provided which locks the operating element in a rotational position. The spring device is designed in particular as a detent spring device, which comprises, for example, two detent springs. As a result, each rotational position of the operating element can be secured and thus each height position for the sweeping brush can be secured in a height adjustment range.

In one embodiment, the chassis has at least one side element on which the storage area is arranged, wherein in particular the side element is plate-shaped. As a result, the height adjustment can be easily integrated into the overall design of the sweeper and integrate in particular in the chassis.

In particular, the side element is formed like an eye or has a loop-shaped area (an area with an eye). As a result, the at least one broom can be fixed in a simple manner and a height adjustment device can be integrated in a simple manner.

It is advantageous if the storage area is arranged at a front end of the sweeper, which is in particular facing away from a rear end of the sweeper, in the region of a wheel device is arranged. This makes it possible to realize a sweeping machine in a simple manner in which a sweeping operation by pushing (in particular manual pushing) takes place via an operator. In particular, the at least one height-adjustable broom is then a side brush.

• 1 eine isometrische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Kehrmaschine;
• 2 eine Explosionsdarstellung des Bereichs A gemäß 1 mit einem Kehrbesen;
• 3 eine Schnittansicht eines Bereichs der Kehrmaschine gemäß 1 mit Kehrbesen in einer ersten Höhenstellung des Kehrbesens; und
• 4 die gleiche Ansicht wie 3 mit einer anderen Höhenstellung des Kehrbesens.

The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. Show it:

• 1 an isometric view of an embodiment of a sweeping machine according to the invention;
• 2 an exploded view of the area A according to 1 with a broom;
• 3 a sectional view of a portion of the sweeper according to 1 with broom in a first height position of the broom; and
• 4 the same view as 3 with another height position of the broom.

An embodiment of a sweeping machine according to the invention, which in 1 shown as a whole and designated 10 includes a chassis 12 , On the chassis 12 is a wheel device 14 arranged, which is a right rear wheel 16 and a left rear wheel eighteen includes. The wheel device 14 is in the area of a rear end 20 of the chassis 12 positioned.

The chassis has a rear end 20 opposite front end 22 ,

In the embodiment of the sweeper 10 is between the rear end 20 and the front end 22 and in particular closer to the front end 22 as to the back end 20 on the chassis 12 (At least) a roller and in particular a steering roller arranged (not visible in the figures). About this steering roller and the wheel device 14 is supported by the sweeper when operated properly 10 on a base to be cleaned.

The sweeper 10 includes a push bar 24 , which on the chassis 12 in particular lockable pivotally mounted. The push bar 24 protrudes in an operating position over the rear end 20 of the chassis 12 out. He also protrudes upward (away from a pad on which the sweeper 10 properly over the wheel device 14 and the steering wheel is set up) away. An operator can use the push bar 24 at a grip area 26 hold and the sweeper 10 on the surface to be cleaned.

On the chassis 12 is a (main) sweeping roller 28 arranged (in 1 indicated). This broom 28 especially between the right rear wheel 16 and the left rear wheel eighteen arranged with the same axis as these two rear wheels 16 . eighteen ,

In one embodiment, this sweeping roller is 28 with the wheel device 14 rotating, that is with a pushing movement of the sweeper 10 turn the rear wheels 16 . eighteen the wheel device 14 and thereby also the sweeping roller 28 turned.

The broom 28 downstream is a hopper 30 on the chassis 12 positioned. The dirt hopper 30 is removable from the chassis 12 to be able to empty it.

Kehrgut is from the sweeping roller 28 in the hopper 30 promoted.

On the chassis 12 is at least one more broom 32 arranged, which is a side brush.

In the embodiment of the sweeper shown 10 is just such a side brush on the right side (on the side of the right rear wheel 16 ) arranged.

A boundary level 34 for the right rear wheel 16 , this limit plane 34 perpendicular to a wheel axle 36 the wheel device 14 is, runs along the chassis 12 , where the broom 32 at least partially beyond this level of limitation 34 laterally (in the embodiment to the right) protrudes.

The chassis 12 includes a side element 38 which is used to hold the broom 32 serves.

The page element 32 (compare also 2 ) is between the wheel device 14 (In the embodiment according to 1 between the right rear wheel 16 ) and the front end 22 arranged. It is in one area 40 formed loop-shaped. This area 40 forms a storage area 42 of the chassis 12 ,

The broom 32 (Side brush) includes a disc brush 44 with a holder 46 (Page broom body 46 ), which is disc-shaped. On the holder 46 are bristle bundles 48 fixed.

The holder 46 has an axis of symmetry 50 , The bristle bundles 48 are at an angle outwards to this axis of symmetry 50 arranged.

Rotationally with the holder 46 connected is a pulley 52 , At this pulley 52 engages a belt (not shown in the drawing). This belt is attached to the wheel device 14 coupled. A pushing movement of the sweeper 10 leads via the belt to a rotation of the pulley 52 and with it the sweeping broom 32 around a rotation axis 54 , This rotation axis 54 is particularly coaxial with the axis of symmetry 50 ,

The rotation axis 54 is doing transverse to the wheel axle 36 oriented.

If the sweeper 10 about the wheel device 14 and the support wheel is supported on a flat surface, then the axis of rotation 54 especially oriented at a (small) acute angle to this pad. This results in an envelope of bristle tips of the bristle bundles 48 at an acute angle to the surface.

With this orientation of the broom 32 To the pad can be swept in the direction of the (main) sweeping roller 28 Feed this to the broom 28 in the hopper 30 to throw.

The sweeper 10 includes a height adjustment device 56 over which a height position of the plate brush 44 along a height direction (direction and opposite direction) 58 can be set. One in the height direction 58 set height position of the plate brush 44 (and thus the sweeping broom 32 ) can be specified. In particular, an automatic determination of the achieved height position takes place simultaneously with a corresponding height adjustment.

The height direction 56 is parallel to the axis of rotation 54 ,

With the plate brush 44 is a guide element 60 connected. The guide element 60 is in particular with the holder 46 and / or the pulley 52 centrally connected. It extends along the axis of symmetry 50 , The guide element 60 is coaxial with this axis of symmetry 50 arranged.

The guide element 60 is so to the plate brush 44 coupled, that a height displacement of the guide element 60 a height shift of the plate brush 44 causes. In particular, the holder 46 to the guide element 60 rotatable, so that a Kehrrotation is not hindered.

A cross section of the guide element 60 transverse to the axis of symmetry 50 is smaller than a corresponding cross section of the holder 46 or the pulley 52 ,

On the guide element 60 sits (at least) a driver 62 , The driver 62 ( 2 to 4 ) is designed as a tab, which extends over a lateral surface 64 of the guide element 60 extends beyond.

The driver 62 in particular has an inclination at a small acute angle to the axis of symmetry 50 on (compare 2 ).

The driver 62 represents a first support surface 66a and a second support surface 66b over his over the lateral surface 64 outstanding area ready.

The guide element 60 In one embodiment, includes a connection pin 67 about which it is with the holder 46 or the pulley 52 axially fixed and rotatably connected.

The area 40 of the chassis 12 has a continuous opening 68 on, through which the guide element 60 has gone through. In particular, the guide element 60 in the opening 68 slidably mounted and it is thereby the storage area 42 of the chassis 12 educated.

In one embodiment, on the side member 38 to the plate brush 44 out a ring 70 arranged. This ring 70 points perpendicular to the axis of symmetry 50 a larger cross-section than the opening 68 or the guide element 60 , Within this ring 70 is an annulus formed.

In one embodiment, the ring is 70 at least in a raised position of the broom 32 in a corresponding area 72 (see 2 ) of the pulley 52 immersed. The ring 70 can do this area 72 touch or be spaced to this. The ring 70 is closed down by a floor, with the pin 67 performed through the ground. This results in a good dust protection.

About the ring 70 becomes a kind of housing for the interior of the ring 70 educated.

On the side element 38 there is another ring 74 which faces away from the ring 70 is.

This further ring 74 is particularly coaxial with the axis of symmetry 50 on the page element 38 arranged. It has a larger cross section perpendicular to the axis of symmetry 50 as the opening 68 or the guide element 60 on.

The guide element 60 is through this wider ring 74 carried out. The further ring 74 surrounds the guide element 60 and is spaced therefrom to this.

In one embodiment, over the further ring 74 another storage area 76 formed, on which a control element 78 rotatable about the axis of rotation 54 is stored. About the further storage area 76 In particular, a sliding bearing is provided.

On the side element 38 is within the wider ring 74 a first support element 80 arranged.

On the first support element 80 the driver is supported 62 with its first support surface 66a down (to the plate brush 44 out). With proper installation of the sweeper 10 on a base, the driver is based 62 in the direction of gravity g on the support surface 82 from.

The first support element 80 has a support surface 82 which is helical.

The first support element 80 forms a web guide 84 for the driver 62 , The support element 80 at least partially surrounds the guide element 60 ,

The track guide 84 and thus the curve of the support surface 82 is designed in particular as a helical guide with a guide curve that winds around a jacket of a cylinder with constant or variable pitch. The corresponding jacket of the cylinder corresponds to the jacket of the first support element 80 ; the first support element 80 in particular has a cylinder jacket with an end face, which the support surface 82 and thereby the web guide 84 forms as Helix leadership.

The operating element (actuating element) 78 is designed as a knob. It comprises grip areas on its outside 66 for one operator. The operating element 78 is cup-shaped with an outer ring 88 , which in one embodiment at the further storage area 76 of the chassis 12 (of the page element 38 ) is supported.

The operating element 78 further comprises a nozzle (a pipe element) 90 , which with a lid 92 of the operating element 78 connected is. The stub 90 protrudes transversely and in particular perpendicularly from the lid 92 path. The stub 90 is cylindrical and coaxial with the axis of symmetry 50 ,

The stub 90 has an interior 94 on. About this interior 94 is the neck 90 on the guide element 60 placed; the guide element 60 dives into the neck 90 (in its interior 94 ) on.

The stub 90 has a groove on his coat 96 on, which is up to a frontal end 98 of the neck 90 extends; the groove 96 is open to the front end.

In this groove 96 is the driver 62 immersed and immersed in them. As a result, there is a non-rotatable coupling of the operating element 78 to the guide element 60 in front.

A height of the groove 96 parallel to the axis of symmetry 50 (or rotary axis 54 or height direction 58 ) corresponds to a range of height displacement of the driver 62 (and thus the guide element 60 and with it the sweeping broom 32 ) on the chassis 12 in the height direction 58 ,

It is a second support element 100 provided, which is a counter element to the first support element 80 forms. The second support element 100 completes the web guide 84 with a corresponding support surface 102 , The support surface 102 serves for support on the second support surface 66b of the driver 62 ,

Accordingly, the second support surface 102 helical to form the above-mentioned helical guide.

The second support element 100 rests with the support surface 102 in the direction of gravity G at the driver 62 off when the sweeper 10 is properly installed.

The second support element 100 is annular and sits in particular in the control 78 , It surrounds the neck 90 and is in particular to an inside of the lid 92 created.

The operating element 78 is about the axis of rotation 54 so rotatably on the side member 78 with his area 40 stored that it itself no height shift of the height direction 58 experiences.

By the non-rotatable coupling of the driver 62 to the control 78 (with immersion of the driver 62 in the groove 96 of the neck 90 ) is via rotation of the control element 78 the guide element 60 turned.

About the web guide 94 learns the driver 62 during the rotation of the control element 78 a shift in the height direction 58 and thus also the guide element 60 , wherein depending on the direction of rotation, the shift upwards (as a displacement of the driver 62 from the page element 38 away) or down (as Zuzuschiebung the driver 62 on the page element 38 out) takes place.

It can be achieved by connecting the guide element 60 (over the pen 67 ) with the broom 32 the height position of the broom 32 relative to the chassis 12 in the height direction 58 to adjust.

The driver 62 and thus the guide element 60 is in every rotational position of the operating element 78 on the first support element 80 down and / or on the second support element 100 supported upwards.

It is a spring device 104 and in particular latching spring device is provided which, for example, on the further ring 74 is supported or fixed, and which on the operating element 78 acts.

This spring device 104 ensures that in a selected rotational position, this corresponding rotational position of the operating element 78 is fixed (locked).

This can be within a rotational position range of the operating element 78 basically any height position in the height direction 58 set and set. In particular, characterized stepless adjustment is possible.

The operating element 78 is with his neck 90 over the guide element 60 attached.

In the area of the front end 98 has the neck 90 an annular groove 106 on. In this ring groove 106 is a circlip 108 arranged. This circlip 108 rests against the side element 38 of the chassis 12 and in this case, for example, on an underside of the first support element 80 which of the support surface 82 turned away, from.

By this support is a Abhebbarkeit the control 78 upwards from the support element 38 prevented away.

• Beim Betrieb der Kehrmaschine 10 wird diese von einem Bediener über die zu reinigende Unterlage geschoben. Er greift dabei an dem Griffbereich 26 des Schutzbügels 24 an und schiebt die Kehrmaschine 10. Diese rollt über die Radeinrichtung 14 und die Lenkrolle an der Unterlage ab.

The sweeper 10 works as follows:

• When operating the sweeper 10 This is pushed by an operator on the surface to be cleaned. He attacks the handle area 26 of the safety bar 24 and push the sweeper 10 , This rolls over the wheel device 14 and the castor from the base.

This push movement also causes the (main) sweeping roller to rotate. Sweepings are in the hopper 30 promoted.

The side brush 32 rotates and promotes from the side debris to the sweeping roller 28 ,

It can be opposite another side brush according to the side brush 32 be arranged to such a Kehrgutzuführung also from the left side of the sweeper 10 to enable her.

About the height adjustment device 56 is the broom 32 height-adjustable. This makes it possible to adapt to special cleaning conditions. It is also a wear on the plate brush 44 (the bundle of bristles 48 ) Compensable.

In one embodiment, it is provided that with a 3/4 turn of the operating element 78 around the axis of rotation 54 an adjustment in the height direction 58 of about 30 mm can be reached.

The height adjustment device 56 includes the operating element 78 , which is attached to the guide element 60 about the driver 62 rotatably coupled.

The driver 62 is at the track guide 84 supported on the first support element 80 and / or on the second support element 100 guided. Depending on the height position can be a support on both support elements 80 . 100 or only on a support element 80 or. 100 available. A rotation of the control element 78 causes a rotation of the driver 62 and about the web guide 84 depending on the direction of rotation, a displacement of the driver 62 with the guide element 60 and thus the plate brush 44 relative to the chassis 12 in the height direction 58 , The height displacement of the page element 38 away or on this depends on the direction of rotation of the control 78 when turning around the axis of rotation 54 from.

The height adjustment device 56 can be formed over a relatively small number of parts, namely in particular the operating element 78 , the first support element 80 , the second support element 100 and the spring device 104 , which in particular comprises two springs (detent springs). The coupling takes place on the driver 62 of the guide element 60 ,

The corresponding parts can be made of plastic and are therefore corrosion-free. The springs of the spring device 104 are made of metallic material such as stainless steel. They can also be made of a plastic material.

The height adjustment device 56 settles in the chassis 12 integrate. It must be provided no swivel arm or the like.

Furthermore, the essential components of the height adjustment can be 56 arrange dust-proof. In particular, the guide element can be 60 with the driver 62 and the web guide 84 Position dust-protected (compare the 3 and 4 ).

The page element 38 is especially in the field 40 plate-shaped (see 1 ) to an integration of the height adjustment 56 and also the holder of the side broom 32 on the chassis 12 to enable.

In 4 is a height position of the plate brush 44 to the chassis 12 shown in which the guide element 60 low in the interior 94 of the neck 90 is immersed.

A corresponding rotation of the operating element 78 causes a height shift of the driver 62 from the chassis 12 away to the top, where then the end position in 3 shown position is reached at the plate brush 54 closer to the chassis 12 located.

In the solution according to the invention, the mechanism for height adjustment is arranged dust-proof; it is only the components that are relevant for operation (the operating element 78 ) and the further storage area 76 visible to the outside. This results in a simple integration into the overall design of the sweeper 10 and in particular, the height adjustment device can be 56 in a simple way in the chassis 12 integrate. Furthermore, as already mentioned above, good dust protection results.

LIST OF REFERENCE NUMBERS

10

sweeper

12

chassis

14

wheel means

16

Right rear wheel

18

Left rear wheel

20

Rear end

22

Front end

24

push handle

26

grip area

28

broom

30

hopper

32

broom

34

limiting plane

36

wheel axle

38

page element

40

Area

42

storage area

44

Circular brush

46

holder

48

bristle bundles

50

axis of symmetry

52

pulley

54

axis of rotation

56

height adjustment device

58

height direction

60

guide element

62

takeaway

64

lateral surface

66a

First support surface

66b

Second support surface

67

connecting pin

68

opening

70

ring

72

Area

74

Another ring

76

Further storage area

78

operating element

80

First support element

82

support surface

84

web guide

86

grip area

88

outer ring

90

Support

92

cover

94

inner space

96

groove

98

Front end

100

Second support element

102

support surface

104

spring means

106

ring groove

108

circlip

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

• DE 102009047368 A1 [0003]
• DE 102007058623 A1 [0004]
• DE 20211440 U1 [0005]
• EP 1151715 A2 [0006]
• EP 0866172 A2 [0007]
• EP 0686371 A1 [0008]
• DE 19507683 A1 [0009]
• DE 3740215 A1 [0010]
• US 4658458 [0011]
• GB 1104300 [0012]
• US 798845 [0013]
• US 2782434 [0014]

Claims (23)

A sweeping machine comprising a chassis (12), at least one broom (32) disposed on the chassis (12), and a height adjustment device (56) associated with the at least one broom (32) over which a height position of the at least a broom (32) relative to the chassis (12) is adjustable, characterized in that the height adjustment device (56) has an operating element (78) which is rotatably mounted, that with the at least one broom (32) a guide element (60) is connected, which is rotatably mounted on a bearing region (42) of the chassis (12), wherein on the guide member (60) rotatably at least one driver (62) is arranged, the guide element (60) via the at least one driver (62) the control element (78) is coupled, and a rotation of the control element (78) via the at least one driver (62) causes a rotation of the guide element (60), and that a web guide (84) for the at least one driver (62) is provided, wherein upon rotation of the at least one driver (62) a height displacement of the at least one driver (62) and thereby of the guide member (60) relative to the chassis (12). Sweeper after Claim 1 , characterized in that the bearing region (42) for the guide element (60) is at least partially formed by the web guide (84) for the at least one driver (62). Sweeper after Claim 1 or 2 , characterized in that the web guide (84) is formed as a helical guide, which in particular has a guide curve which winds around a jacket of a cylinder with a constant or variable pitch. Sweeper according to one of the preceding claims, characterized in that the web guide (84) comprises a first support member (80) for the at least one driver (62), which is non-rotatably arranged or formed on the chassis (12). Sweeper after Claim 4 , characterized in that the first support member (80) has an interior in which the guide member (60) is positioned, in particular, the guide member (60) is rotatable to the first support member (80). Sweeper after Claim 4 or 5 characterized in that the at least one driver (62) is supported on the first support member (80) downwardly relative to the direction of gravity and / or supported on a second support member (100) upwardly relative to the direction of gravity when the sweeping machine is for one Proper operation is supported on a base. Sweeper according to one of the preceding claims, characterized in that the web guide (84) has the second support element (100), which in particular on the operating element (78) is supported. Sweeper after Claim 6 or 7 , characterized in that the second support element (100) is formed as a ring. Sweeper after one of the Claims 6 to 8th , characterized in that the operating element has a connecting piece (90), which is immersed in an inner space of the second supporting element (100). Sweeper according to one of the preceding claims, characterized in that the operating element (78) has a connecting piece, via which the at least one driver (62) is coupled to the operating element (78). Sweeper after Claim 10 , characterized in that the guide element (60) is immersed in the nozzle (90), wherein in particular an immersion depth is determined by a rotational position of the operating element (78). Sweeper after Claim 10 or 11 , characterized in that the neck (90) is cylindrical. Sweeper after one of the Claims 10 to 12 , characterized in that the connecting piece (90) has at least one groove (96) in which the at least one driver (62) is positioned and via which the at least one driver (62) with the operating element (78) rotatably to the operating element (96). 78) is coupled. Sweeper after Claim 13 , characterized in that the at least one groove (96) extends over a height range of the connecting piece (90), which is adapted to a Höhenverschieblichkeit the at least one driver (62), and in particular that the at least one groove (96) at an end End (98) of the nozzle (90) is open. Sweeper after one of the Claims 10 to 14 , characterized in that the operating element has an annular region (88) which surrounds the connecting piece (90), wherein in particular the operating element (78) extends over the annular region (88). is rotatably mounted on a further storage area (76) of the chassis (12). Sweeper after Claim 15 , characterized in that the further storage area (76) annularly surrounds the bearing area (42) for the guide element (60). Sweeper after Claim 15 or 16 , characterized in that the further bearing region (76) surrounds a first support element (80) of the web guide (84) in an annular manner. Sweeper after one of the Claims 10 to 17 , characterized in that at the neck (90) a locking ring (108) as Abheingsicherung for the operating element (78) sits. Sweeper according to one of the preceding claims, characterized in that the operating element (78) with respect to a height direction (58) is mounted fixed against displacement on the chassis (12). Sweeper according to one of the preceding claims, characterized by a spring device (104) which locks the operating element (78) in a rotational position. Sweeper according to one of the preceding claims, characterized in that the chassis (12) has at least one side member (38) on which the bearing region (42) is arranged, wherein in particular the side member (38) is plate-shaped. Sweeper after Claim 21 , characterized in that the side member (38) is formed like an eye or a loop-shaped portion (40). Sweeper according to one of the preceding claims, characterized in that the storage area (42) is arranged at a front end (22) of the sweeper, which is in particular facing away from a rear end (20) of the sweeper, in whose area a wheel device (14) is arranged.

Images