KR20140026386A - Sweeping vehicle having a brush disk adjuster - Google Patents

Abstract

The invention comprises a disc brush 26 for sweeping dirt from the bottom surface to be cleaned, which includes a brush disc 82 which is fixed and which is inclined with respect to the horizontal plane and which can be rotated about the axis of rotation 80. ), An adjusting device 92 comprising an adjusting member 90, for changing the inclination of the brush disk 82 with respect to the horizontal surface and the contact area of the brush 84 with the bottom surface, and the cleaning vehicle 10. A cleaning vehicle (10) having a support device (46; 150; 200) for supporting a disc brush (26) in the air. In order to provide such a cleaning vehicle 10 in which a change in the contact area of the bottom surface with the brush 84 is possible in a reliable and structurally simple manner, the support devices 46; 150; 200 are provided with joints 69, 71, 73, 75; 169, 185, 187, 189; 209 polygon joint 56 consisting of respective joint members 58, 60, 62, 64; 176, 178, 180, 182; 202, 204, 206 connected to each other; 174 212, wherein the polygonal joint includes a first joint member 58; 176; 202 and the disc brush 26 that support the polygonal joint 56; 174 212 to the cleaning vehicle 10. It includes a second joint member (60; 178) is supported, the adjustment member 90 is formed to be possible to change the length, at least one joint member (58, 60, 62, 64; 176, 178, 180) 182, 202, 204, 206, in which case the first joint member 5 with respect to the second joint member 60; 178 according to the change in length of the adjusting member 90. It is proposed that the orientation setting of 8, 176; 202 can be changed, and the disk brush 26 can be pivoted about a pivot axis 118 which is inclined and aligned with respect to the axis of rotation 80.

Description

Cleaning vehicle with brush disc adjuster {SWEEPING VEHICLE HAVING A BRUSH DISK ADJUSTER}

The present invention includes a brush disk with a fixed brush and a brush disk tilted with respect to the horizontal plane and capable of rotating about an axis of rotation, a disk brush for sweeping dirt from the floor surface to be cleaned, changing the tilt of the brush disk with respect to the horizontal plane and the bottom A cleaning vehicle having an adjusting device including an adjusting member for changing a contact area of a face with a brush and a supporting device for supporting a disk brush in the cleaning vehicle.

In such a cleaning vehicle the brush disc is tilted with respect to the horizontal plane so that all brushes of the disc brush do not come into contact with the floor at the same time. Instead, the area of contact of the brush with the bottom surface, also referred to as the "cleaning trajectory" or "working area," has, for example, a kidney, crescent or arc shape by the tilt of the brush disk. Since this is to sweep the dirt out of the floor in the defined direction, the dirt can be collected from the floor by means of a dirt collection device of the cleaning vehicle, for example a brush roller or a suction device. In the case of a cleaning vehicle of this type described for example in DE 40 01 088 A1, the inclination of the brush holder with respect to the horizontal and the bottom surface can be changed to change the cleaning trajectory. The change of the cleaning trajectory is made at the corner of the cleaning vehicle, for example, and is used to change the direction in which the dirt is swept away from the floor, so that the dirt can be collected by the waste collection device even when cornering. The adjustment of the disc brushes for cleaning vehicles described in DE 40 01 088 A1 requires a complex and reasonably rigid structure. In this case a piston-cylinder-unit is used as the adjusting member, which unit pivots the brush disc against the prestress of the spring, in which case an additional adjustable stopper is provided to limit the turning angle.

Another cleaning vehicle of this type is disclosed in EP 1 769 950 A2. In order to adjust the cleaning trajectory of the disk brush of such a cleaning vehicle, a similarly complicated structure is required, which requires that the entire disk brush be lifted from the floor in addition to the brush disk being inclined with respect to the floor. .

It is an object of the present invention to provide a cleaning vehicle of the above-described manner which is capable of changing the contact surface of the floor surface, that is, the cleaning trajectory and the brush, in a reliable and structurally simple manner.

The object is according to the invention in a cleaning vehicle of the above scheme, in which the support device comprises a polygonal joint consisting of respective joint members connected to each other, the polygonal joint comprising a first joint member for supporting the polygonal joint to the cleaning vehicle. And a second joint member on which the disc brush is supported, wherein the adjustment member is formed to be changeable in length and connected to the at least one joint member, in which case the first joint member with respect to the second joint member is changed in accordance with the change in the length of the adjustment member. The orientation setting of the joint member can be changed, and the disc brush is solved by being able to pivot about a pivot axis aligned with respect to the axis of rotation.

The disk brush of the cleaning vehicle according to the invention is supported on the cleaning vehicle by a polygonal joint consisting of joint members pivotally connected to each other, in which case the disk brush is supported on the second joint member, and the polygonal joint is on the first joint member. Is supported by the cleaning vehicle. Since a control member capable of changing a length is connected to at least one joint member of the joint members, the shape of the polygonal joint may be changed by the length variation of the control member.

The joint members are pivoted with respect to each other, in particular the second joint member is pivoted with respect to the first joint member, and the disc brush is pivoted with respect to the vehicle. Since the pivot axis is inclined and aligned with respect to the axis of rotation, this results in a change in the tilt of the brush disc with respect to the horizontal plane and the bottom plane and a change in the cleaning trajectory. By connecting two joint members to each other in one joint, a closed polygonal joint is obtained with higher rigidity and thus lower torsional sensitivity, especially when the joint members are arranged in a common plane. This not only ensures stable support of the disc brush as a whole, but also changes the shape of the polygonal joint by changing the length of the adjustment member, which can be achieved in a clearly defined manner. As a result, the orientation and cleaning trajectories of the first and second joint members relative to each other can be reliably changed such that the tilt of the brush disk can be maintained even under severe vibrations acting on the disk brush due to floor unevenness or the like. . Overlooking this advantage, the variation of the cleaning trajectory can be made in a structurally simple manner, since in this case it is sufficient to change the length of the adjustment member to change the shape of the polygonal joint.

The pivot axis and the axis of rotation can be deflected from one another and do not have to intersect to enable the tilt change of the brush disc.

It is preferred if the adjusting member is connected to at least one joint member in at least one joint connecting the two joint members to each other. This can reduce the number of connection points required-the joints of the polygonal joints and the connection points of the adjusting members on the polygonal joints-so that a simple structural design can be provided to the support device. For example, at least one connection point of the adjustment member on the polygonal joint can be integrated into at least one of the joints already provided.

Preferably the first end of the adjustment member is connected to a joint connecting the two joint members to each other, and the second end is supported by the cleaning vehicle. By changing the length of the adjustment member, the angle between the two joint members connected to each other in the joint can be changed, which jointly form a toggle lever. The angle change causes a change in the shape of the polygonal joint and a change in the orientation of the first and second joint members relative to each other.

In another embodiment of the cleaning vehicle according to the invention it is preferred if the adjusting member forms a joint member of the polygonal joint, which joint member together with the other joint member forms a joint of the polygonal joint. By changing the length of the adjustment member, the shape of the polygonal joint and the orientation of the first and second joint members relative to each other can be directly changed. This allows a particularly simple structural design of the support device.

It is preferred if the second joint member and the adjusting member are different joint members of the polygonal joint, ie the disc brush is not supported by the adjusting member. This proved to be simpler for the structural design of the support device.

In the case where the adjusting member connects the first joint member and the second joint member to each other, the number of the joint members is kept as small as possible and therefore the structure of the supporting device is kept as simple as possible.

Preferably the first joint member and the second joint member form opposite sides of the polygonal joint. This allows the disc brush to be spaced apart from the cleaning vehicle in a structurally simple manner. This is advantageous, for example, when the disc brush is a disc brush supported on the side of the cleaning vehicle, and the brushes of the disc brush protrude past the base surface of the cleaning vehicle for cleaning the bottom surface along the side restriction.

Polygonal joints have three or more edges. Indeed, polygonal joints have proved to be desirable in the case of rectangular joints, in particular concave rectangular joints. In the case of polygonal joints with three or more edges, in particular rectangular joints, the polygonal joints can take one or more forms at a given length of the joint member. This is desirable because the weight acting on the disc brush and thus the counter force of the bottom surface can also influence the shape change of the polygonal joint. Unlike the case of triangular joints, therefore, simply by means of a rectangular joint, the size of the area of contact of the brush with the bottom can always be kept almost uniform, even in the case of successive changes in the tilt of the brush disc. This avoids the disadvantages of non-uniform wear of the brush and makes it possible to achieve better cleaning results.

It is preferred if the length of the adjustment member can be adjusted to form the polygonal joint as a parallelogram joint. In the case of the regulating member forming one joint member, the length of the regulating member can be adjusted to have the same length as one joint member of the parallelogram joint, which is disposed opposite the regulating member, and also of the parallelogram joint. The remaining two joint members have the same length. The formation of polygonal joints as parallelogram joints is a structurally simple change of the spacing of the brush disk with respect to the floor, beyond the above-mentioned advantages, while maintaining the tilt of the brush disk with respect to the floor. This is desirable when the disc brush is lifted or lowered while maintaining the cleaning trajectory with respect to the bottom surface. For example, this allows for a “floating” support of the disc brush, in which the bottom unevenness is automatically compensated for.

Preferably the length of the adjustment member in the straight running of the cleaning vehicle may be adjusted such that the polygonal joint forms a parallelogram joint. The above-mentioned height controllability of the disc brush in the standard moving direction of the cleaning vehicle can be ensured under the maintenance of the inclination of the brush disc. Preferably, when the cleaning vehicle goes straight, the length of the adjusting member is detected with reference to the steering angle of the steering wheel of the cleaning vehicle and adjusted appropriately.

It is preferable when the adjustment member forms the long side of the parallelogram joint, and the second joint member forms the short side of the parallelogram joint. Parallelogram joints are inequality in this embodiment, ie not rhombus. This makes it possible to form a lever of sufficient size for pivoting the disc brush about the pivot axis in a structurally simple manner, in which case the absolute length change of the adjustment member can be kept small.

Preferably the support device comprises a parallelogram lift for lifting and lowering the disc brush, wherein one of the sides of the parallelogram lift is a first joint member. By means of the parallelogram lift described above the spacing of the brush disc relative to the floor surface can be changed, for example, for "floating" support of the disc brush, for example when driving straight and cornering. In addition, the cleaning trajectory can be moved as described above.

In particular, in the last described embodiment, the first joint member is movably supported on a cleaning vehicle, for example about a pivot axis aligned parallel to the pivot axis and perpendicular to the plane defined by the polygonal joint.

In another embodiment of the cleaning vehicle according to the invention, the first joint member may be immovably fixed to the cleaning vehicle.

Preferably the adjustment member is disposed on the upper side of the polygonal joint away from the bottom surface and the disc brush is disposed below the polygonal joint. This ensures that the adjustment member is as large as possible with respect to the bottom surface and is exposed as little as possible to dirt and dust flying from the bottom surface.

The disc brush can be supported on the vehicle in a space saving manner, when the center thereof is disposed approximately below the center of the polygonal joint.

Preferably the polygonal joint defines a vertical plane in order to achieve as simple a structural design as possible. This is particularly desirable where parallelogram joints can be formed by polygonal joints as described above. In this case, since the position of the brush disk does not change when the disk brush is raised and lowered, the cleaning trajectory is fixed to the cleaning vehicle even when the height of the disk brush is adjusted.

The pivot axis is preferably aligned horizontally, which can be achieved structurally simply if the polygonal joint defines a vertical plane as in the preferred embodiment of the cleaning vehicle described last. In this case the pivot axis is aligned perpendicular to the plane defined by the polygonal joint.

Preferably the pivot axis is aligned perpendicularly to the axis of rotation, ie at an angle other than 90 ° with respect to the axis of rotation. This means that in the case of skewed rotational and pivotal axes, an axis parallel to the rotational axis and intersecting the pivotal axis does not intersect the rotational and pivotal axis by 90 °. This embodiment provides the advantage that the cleaning trajectory rolls on the bottom surface when the disc brush is pivoted in the circumferential direction of the end of the brush towards the bottom surface. The cleaning trajectory can in this way continue to be rolled on the bottom surface by successive length changes of the adjusting member. This makes it possible to change the direction in which dirt is swept from the bottom surface continuously, for example in accordance with the steering angle of the steering wheel.

To achieve the cleaning direction defined by the disc brush, the brush disc is aligned at an angle with respect to the horizontal plane and the axis of rotation is aligned at an angle with respect to the bottom plane. It is preferable when the axis of rotation is aligned at an angle with respect to the floor surface irrespective of the length of the adjusting member. For this reason, it is possible to omit the adjusting device for adjusting the rotation axis in a direction aligned with the bottom surface inclined with respect to the bottom surface. This simplifies the structural design of the cleaning vehicle.

Preferably the pivot axis extends through the center point of the brush disc or substantially through the center point of the brush disc. This makes it possible to change the tilt of the brush disc relative to the floor surface, in which case the position of the brush disc is fixed relative to the vehicle. This minimizes the space required to change the cleaning trajectory.

As mentioned above, the length of the adjustment member can be adjusted according to the steering. It is preferred if the adjusting device comprises a steering angle detecting member which operatively engages with the adjusting member for detecting the steering angle of the steering wheel of the cleaning vehicle, in which case the length of the adjusting member can be adjusted according to the steering angle of the steering wheel. This adjusts the length of the adjusting member at the corner of the cleaning vehicle so that the direction in which the dirt is swept away from the bottom face toward the waste collection device of the cleaning vehicle, thereby allowing the disc brush to pivot. This makes it possible to achieve as good cleaning results as possible in various driving directions, in particular in cornering.

Preferably the adjustment device comprises a forcing guide for the steering angle detection member, which is adjustable according to the steering angle of the steering wheel, wherein the detection member detects the steering angle of the steering wheel with reference to the position of the forcing guide. When the steering wheel of the cleaning vehicle is actuated, adjustment of the forced guide that can be detected by the steering angle detection member coupled to the adjustment member is made. This allows the steering angle of the steering wheel to be detected structurally simple.

It has proven to be in fact reliable and structurally simple when the force guide is a sliding guide. Also, a forced guide in the form of a cam disc guide or a forced guide including cam timing can be considered.

In the case where the steering angle detecting member and the adjusting member are master-piston-cylinder-units or slave-piston-cylinder-units of the hydraulic system connected via the hydraulic line, the change of the length of the adjusting member can be achieved structurally simply. In particular, this is a closed hydraulic system in which the lengths of the master-piston-cylinder-unit and the slave-piston-cylinder unit vary with each other. For example, when the length of the steering angle detection member is reduced, hydraulic fluid is discharged through the hydraulic line, which can extend the adjustment member and vice versa. In order to change the length of the steering angle detection member, the member is coupled to the control link of the non-circular sliding guide, for example by the end of the piston, the sliding guide rotating in accordance with the steering angle of the steering wheel.

In another preferred embodiment of the cleaning vehicle according to the invention, the steering angle detecting member and the adjusting member may each be a piston-cylinder-unit of a pneumatic system.

In addition, the adjustment member may be mechanically coupled to the steering angle detection member, for example via a Bowden cable. In addition, electrical coupling of the steering angle detection member and the adjustment member may also be considered. The steering angle detection member may be embodied as a rotation angle sensor, for example as a potentiometer or hall sensor. The stepwise coupling of the steering angle detection member to the steering wheel can be made by one or more switches, such as a micro switch.

As mentioned above, it is known to collect by the waste collection apparatus the waste rubbed off from the bottom surface by the disk brush. The waste collection device is arranged behind the disc brush in the travel direction, preferably in the rear region of the cleaning vehicle.

The brush disc is preferred when it can be tilted toward the vehicle center of the cleaning vehicle by the variation of the length of the adjustment member. In particular, this may be such that the cleaning vehicle corners in the opposite direction to the arrangement of the disc brush on the side of the cleaning vehicle upon steering of the steering wheel. If the disc brush is for example a right disc brush, the brush disc can be tilted from the right toward the center of the vehicle if the cleaning vehicle is located at the left corner. This moves the cleaning trajectory toward the center of the vehicle. This makes it possible to clean the area of the bottom surface by the right disc brush during left cornering, and in other cases the area remains uncleaned unless the tilt of the brush disc is changed. In the case of a cleaning vehicle in which the dirt collection device consists of cleaning rollers spaced apart from the disk brush behind the side disk brush, this results in a so-called "sickle-shaped dirt", i.e., uncleaned of the floor during left cornering. Sickle-shaped areas may be reduced. Correspondingly, the cleaning trajectory of the brush is moved from the left toward the center of the vehicle since the brush disc of the left disc brush can be inclined towards the center of the vehicle during the right cornering.

It is preferable when the cleaning vehicle includes an auxiliary disk brush disposed behind the disk brush in the vehicle longitudinal direction and a dirt collection device disposed behind the auxiliary disk brush, wherein the auxiliary disk brush is lifted by the lift device when driving straight of the cleaning vehicle. It can be lifted from the floor and lowered onto the floor during cornering of the cleaning vehicle. As mentioned in the embodiment of the cleaning vehicle described last, the so-called "scythes" in cornering can be reduced by tilting the disk plane towards the center of the vehicle. In the present embodiment, when using an auxiliary disk brush disposed between the disk brush and the waste collection apparatus, sickle-shaped dirt can be completely removed by the auxiliary disk brush lowering during cornering. The dirt in the sickle-shaped dirt area left by the use of the disc brush is equally swept by the auxiliary disc brush when cornering and can be swept by a dirt collection device, for example a cleaning roller. For this purpose the brush disc is preferably inclined towards the center of the vehicle. In contrast, in the straight run of the cleaning vehicle, an auxiliary disc brush is not necessary. In order to prevent unnecessary wear of the brush, the brush can be lifted from the bottom surface.

As mentioned above, the cleaning vehicle may have right and left disc brushes. In particular, it is preferred if the cleaning vehicle comprises two disc brushes which are formed symmetrically with each other, which brushes are arranged on opposite sides of the vehicle. The two disc brushes formed symmetrically with each other are preferably the left and right disc brushes of the cleaning vehicle, and can be supported for the cleaning vehicle or adjusted relative to the cleaning vehicle by means of an adjusting device, like the disc brushes of the cleaning vehicle described above. With reference to the above-described disc brush, support device, adjustment device and their respective parts or features, it can be understood in connection with at least one disc brush, at least one support device and at least one adjustment device.

The following description of the preferred embodiments of the invention is used in the detailed description of the invention in connection with the drawings.

1 is a perspective view of a cleaning vehicle according to the present invention;
FIG. 2 is a perspective view of a chassis portion of the cleaning vehicle of FIG. 1. FIG.
3 is a plan view of the undercarriage of FIG. 2 during a straight run of the cleaning vehicle, in which the steering apparatus of the cleaning vehicle is shown;
4 is a view corresponding to FIG. 3 when the left side of the cleaning vehicle is turned;
5 is a view in the direction of an arrow "5" in FIG.
FIG. 6 is a view in the direction of arrow "6" in FIG. 4; FIG.
FIG. 7 is a view in the direction of arrow “7” of FIG. 3;
8 corresponds to FIG. 5 in a modification of the cleaning vehicle;
9 corresponds to FIG. 5 in another variant of the cleaning vehicle.

A preferred embodiment of the cleaning vehicle according to the invention is formed as a so-called "boarding sweeper", shown in perspective in FIG. The cleaning vehicle 10 is used to clean the floor surface and can be moved past the floor surface by the suspension 12 for this purpose. The suspension 12 comprises two wheels on the rear face 14 of the cleaning vehicle 10 which can rotate about the wheel axle 15, of which only one right wheel 16 is shown. . For steering and driving, the cleaning vehicle 10 comprises wheels 20 which can be disposed and rotated in the area of the vehicle center plane 19 near the front face 18, and the operator handles the steering wheel in a known manner. The wheel can be operated using a steering device 221 including 22.

The cleaning vehicle 10 includes a number of cleaning equipment to collect dirt from the floor to be cleaned. The sweeping roller 24, shown only schematically in FIGS. 3 and 4, is rotatably supported about a wheel axis 15 between the wheels of the rear face 14. The cleaning vehicle 10 includes a right disc brush 26 and a left disc brush 28 on the front face 18 and between the right disc brush 26 and the cleaning roller 24, the cleaning vehicle 10. On the right side of the auxiliary disk brush 30 is arranged. The dirt can be swept away by the cleaning roller 24 and the disc brushes 26, 28, 30, and transferred into the dirt hopper 32 disposed on the rear face 14.

The cleaning equipment and the suspension 12 are supported on the chassis 36 of the cleaning vehicle 10, partly shown in FIGS. 2 to 4, such as the remaining parts of the cleaning vehicle 10, such as the body 34. The chassis 36 extends from the center of the steering wheel 22 to the wheel axle 15 in the longitudinal direction of the steering wheel 22 and from the center of the steering wheel 22 to the front surface 18. A trapezoidal front section 40. A support device, not shown in the figure, is used to support the sweeping roller 24 in the rectangular section 38. The auxiliary disc brush 30 is supported by the support device 44 on the transverse support 42 of the section 38. The disc brushes 26, 28 are supported by the support devices 46 and 48 on the right support 50 and the left support 52 of the trapezoidal section 40, in this case the supports 50, 52. Form the non-parallel sides of the section 40.

Since the disc brushes 26, 28 and the support devices 46, 48 are formed symmetrically with respect to the vehicle center plane 19, only the right disc brush 26 and the right support device 46 are described below. .

In particular, as shown in FIGS. 2 and 5 to 7, the support device 46 comprises a connecting device 54, which connects the polygonal joint 56 and the joint members 58 which are in particular pivotally connected to one another. 60, 62, 64 to form a fixed and in particular torsionally rigid rectangular joint 66. The first joint member 58 is immovably fixed to the right support part 50 and aligned in the vertical direction. The member forms the base of the rectangular joint 66. The second joint member 60 forms the side face of the rectangular joint 66, which is disposed opposite the first joint member 58. Thus, the second member is spaced apart from the right support 50.

The bottom facing ends of the joint members 58, 60 are connected to each other by a third joint member 62. In this case, the joint member 62 is pivotally supported by the joint 69 to the joint member 58 by the joint 69, and the joint member 62 is formed by the joint 71 to the joint member 60. Two pivot shafts 70 are pivotally supported. Ends away from the bottom surface of the joint members 58, 60 are connected to each other by a fourth joint member 64. The fourth joint member 64 is pivotally supported by the joint 73 to the joint member 58 by the joint 73, and the fourth joint member 64 by the joint 75 to the joint member 60. It is rotatably supported about the pivot 74.

All four joint members 58 to 64 are arranged in a common plane. The rectangular joint 66 thus defines a vertical plane and the pivot axes 68 to 74 are aligned perpendicular to the plane, ie the pivot axes each extend horizontally.

The support portion 76 is fixed to the second joint member 60. The support portion 76 protrudes from the second joint member 60 in the direction of the first joint member 58 and simultaneously protrudes from the rectangular joint 66 in the forward direction of the cleaning vehicle 10. The support 76 is formed bent about the plane defined by the rectangular joint 66 and comprises a flat support member 78, the surface normal of which is relative to the floor and by the rectangular joint 66. It is aligned at an angle with respect to the defined plane.

The disc brush 26 is rotatably supported by the support member 78, in which case the axis of rotation 80 of the brush is aligned parallel to the surface normal of the support member 78 and inclined with respect to the bottom surface. In other words, the brush disc 82 of the disc brush 26 disposed below the support member 78 extends parallel to the support member 78. Brushes 84 of disk brush 26 extend from brush disk 82 toward the bottom surface.

A drive motor 86 (not shown in FIGS. 5 to 7) for driving the disc brush 26 about the rotation shaft 80 is supported on the upper side of the support member 78.

The fourth joint member 64 on the upper side of the rectangular joint 66 is formed to be changeable in length. In particular, the member is formed as a piston-cylinder-unit 88, so that the member is for cleaning the shape of the rectangular joint 66 and for changing the tilt of the brush disk 82 relative to the floor surface. The adjusting member 90 of the adjusting device 92 of () is formed and will be described below in this regard.

As can be seen in FIGS. 3 and 4, the adjusting device 92 comprises another piston-cylinder-unit 94, which unit is fixed to the base plate 96, the plate having a trapezoidal section. Cover 40. The piston-cylinder-units 88, 94 are operatively coupled to each other only via the hydraulic line 98 shown in FIGS. 3 and 4. The units form a closed hydraulic system, in which case the lengths of each of the piston-cylinder-units 88, 94 are correlated with each other, ie the piston-cylinder-unit 94 is shortened so that the hydraulic line 98 is reduced. The connection via the piston-cylinder-unit 88 extends and vice versa.

The piston-cylinder-unit 94 forms a steering angle detecting member 100 of the adjusting device 92 for detecting the steering angle of the steering wheel 22. To this end, the free end 102 of the piston-cylinder-unit 94 facing the vehicle center plane 19 engages the force guide 104 contained in the adjusting device 92. The force guide 104, not shown in detail in the figure, is supported on the base plate 96 to be rotatable about a vertical axis of rotation 106 lying in the vehicle center plane 19. As the steering wheel 22 is rotated about a steering axis not shown in the drawing, the force guide 104 is rotated about the rotation axis 106 in the same direction, that is, counterclockwise when steering to the left and clockwise when steering to the right. Is turning into.

The force guide 104 is formed as a sliding guide. The force guide includes a non-circular control link 108 having a first link section 110 and a second link section 112. The first link section 110 is formed in the form of a half ring, and the second link section 112 is formed in the form of a flat half ring. In the straight position of the steering wheel 22, that is, in the straight run of the cleaning vehicle 10 (FIG. 3), the imaginary split line between the link sections 110, 112 extends perpendicular to the vehicle center plane 19. .

In the following the operation of the cleaning vehicle 10 is described in particular with reference to FIGS. 3 to 6:

 The free end 102 couples to the control link 108 at the dividing line between the link sections 110, 112 when driving straight of the cleaning vehicle 10. Since the hydraulic system formed of the piston-cylinder-units 88, 94 and the hydraulic line 98 is calibrated, the length of the piston-cylinder-unit 88 at this position of the piston-cylinder-unit 94 is a rectangular joint. It is dimensioned so that 66 is a parallelogram joint (FIG. 5). In other words, the mutual spacing of the pivot axes 68, 70 when driving straight of the cleaning vehicle 10 is equal to the mutual spacing of the pivot axes 72, 74.

The support 76 is arranged such that the rotational axis 80 of the disk brush 26 is inclined in the direction opposite to the vehicle center plane 19 and in the direction toward the running direction of the cleaning vehicle 10, that is, the brush disk 82 is Tilt away from the cleaning vehicle 10 to the right front. This places the brushes 84 on the bottom along an almost elongate or half ring shaped contact area, referred to below as the "cleaning trajectory 114".

The cleaning trajectory 114 (shown in broken lines in FIGS. 3 and 4, only partially for convenience in FIG. 4) is disposed in the right front corner region of the cleaning vehicle 10 due to the position of the rotational shaft 80. As a result, dirt on the right side of the base surface of the cleaning vehicle 10 during straight driving may be wiped out in the direction of the vehicle center plane 19, for example, when the cleaning vehicle is moved along the side restriction of the bottom surface. The dirt can subsequently be swept away by the sweeping roller 24, the cleaning trajectory of the roller being shown at 116.

Since the rectangular joint 66 is a parallelogram joint in the straight run of the cleaning vehicle 10, the floor unevenness can be compensated by the connecting device 54, in which case the inclination of the brush disc 82 with respect to the floor surface is It does not change. For this purpose the joint members 58, 60 and the joint members 62, 64 are respectively moved parallel to each other, ie in the vertical plane defined by the rectangular joint 66.

In addition, the auxiliary disk brush 30 is lifted from the bottom surface in the straight running of the cleaning vehicle 10, which is not shown in FIG. 3. In order to lift the auxiliary disk brush 30, the support device 44 is formed as a lifting device, for example in the form of a known parallelogram joint.

When the cleaning vehicle 10 turns left, the sliding guide 104 pivots about the rotation axis 106. The free end of the piston-cylinder-unit 94 is moved towards the axis of rotation 106 into the second link section 112 flattened in the control link 108 (FIG. 4). This extends the piston-cylinder-unit 94 and the latter length is shortened by the connection of the piston-cylinder-unit and the piston-cylinder-unit 88 via the hydraulic line 98 (FIG. 6). .

By shortening the piston-cylinder-unit 88, the rectangular joint 66 deforms from a parallelogram joint to an isosceles rectangular joint. This is accomplished by the joint members 58-64 moving relative to one another in the vertical plane of the rectangular joint 66 about the pivot axes 68-74. In this case, the upper end of the second joint member 60 is pulled in the direction of the first joint member 58 fixed relative to the cleaning vehicle 10.

The support 76 fixed to the second joint member 60 follows the movement of the joint member and pivots about the pivot axis 70 with respect to the joint member 62. As a result, the disc brush 26 pivots about the pivot axis 118 with respect to the chassis 36, which pivot axis 68-74 by arranging the joint members 58-64 in a vertical plane. Are horizontally aligned equally and extend parallel to the pivot axes. Since the disc brush 26 is supported on the bottom surface by the brushes 84 by the rectangular joint 66 being lifted during the pivot, the pivot shaft 118 and the pivot shaft 70 are different.

Since the pivot shaft 118 extends slightly apart from the center of the brush disk 82, the disk brush 26 is fixed about the chassis 36 and pivoted about the pivot shaft 118.

When the disk brush 26 is pivoted, the brush disk 82 of the brush is also pivoted about the pivot axis 118, so that the inclination of the disk brush with respect to the bottom surface is changed. In particular, the brush disc 82 is inclined toward the vehicle center plane 19 as well as the axis of rotation 80 inclined and deflected and aligned with respect to the pivot axis 118. As a result, the cleaning trajectory 114 is moved toward the vehicle center plane 19 when the steering wheel 22 is rotated to the left. Since the rotary shaft 80 is inclined and aligned with respect to the pivot axis 118, the cleaning trajectory 114 rolls toward the vehicle center plane 19 on the floor surface. The movement of the cleaning trajectory 114 is made continuously upon turning the steering wheel 22 to the left, which is due to the shape of the second link section 112.

The movement of the cleaning trace 114 in the direction of the vehicle center plane 19 when the steering wheel 22 is rotated to the left causes the dirt between the disc brush 26 and the cleaning roller 24 in one direction from the bottom surface. Used to be able to sweep, whereby the dirt can be collected by the sweeping roller 24. If the cleaning trajectory 114 is not moved, the so-called "scythes" (not shown) due to the mutual spacing between the disc brush 26 and the cleaning roller 24 would otherwise not be left when the cleaning vehicle 10 is turned left. The sickle-shaped area of the dirt is left. Therefore, the size of the sickle-shaped dirt may be reduced by the movement of the cleaning trajectory 114 during the right turn.

In the cleaning vehicle 10, the disc brush 26 and the cleaning roller 24 have a somewhat large distance from each other, so that the sickle-shaped dirt may be removed only by the disc brush 26 over a predetermined rotation range of the steering wheel 22. It is impossible to remove it completely. For this reason, the cleaning vehicle 10 includes the above-described auxiliary disk brush 30. When the steering wheel 22 is rotated to the left, the auxiliary disk brush 30 is lowered above the bottom by the support device 44. Since the axis of rotation 120 of the auxiliary disk brush is inclined with respect to the vehicle center plane 19, the cleaning trace 122 of the brush (shown in broken lines in FIG. 4) is the steering wheel 22 with respect to the vehicle center plane 19. It has a concave shape regardless of its rotation. Since the cleaning trace 122 is adjacent to the cleaning trace 116 of the cleaning roller 24, the sickle-shaped dirt may be completely removed by the auxiliary disk brush 30. Above the predetermined rotation range of the steering wheel 22, ie in the situation shown in FIG. 4, the cleaning trajectories 114, 122 of the disc brushes 26 and 30 can be in close contact and overlap for this purpose.

Since the auxiliary disk brush 30 is lifted from the bottom surface as described above during the straight running of the cleaning vehicle 10, the brush is not worn unnecessarily.

The length of the piston-cylinder-unit 88 at the right turn of the cleaning vehicle 10 does not change compared to the length of the unit at the straight run. The reason is that since the link section 110 is formed in the shape of a half ring, the length of the piston-cylinder-units 94 and 88 does not change when the steering wheel 22 is rotated to the right. In addition, this is not necessary because dirt collected on the bottom surface by the disk brush 26 at the right turn can always be collected by the cleaning roller 24.

As described above, since the joint member 64 is formed as an adjustable member 90 whose length can be changed to change the shape of the rectangular joint 66, a reliable and structurally particularly simple turning of the disc brush 26 is possible. Depending on the steering of the steering device 221, the brush disk 82 may be tilted with respect to the chassis 36. This enables the on-demand movement of the cleaning trajectory 114 to improve the cleaning results by reducing sickle-shaped dirt, and additionally an auxiliary disk brush 30 is used for removal of the sickle-shaped dirt.

The above description can be applied equally to the left disc brush 28, in which case the adjusting device for adjusting the shape of the supporting device 48-except for the adjusting member 124-is not shown in the figure.

Unlike in the case of the cleaning vehicle 10, the joint member 64 may be mechanically coupled to the control device of the cleaning vehicle, for example by bowden cages. In addition, electrical coupling of the steering device of the cleaning vehicle and the joint member 64 may be considered.

In a variant of the cleaning vehicle 10 shown in FIG. 8 in a manner corresponding to FIG. 5, a support device 150 is used instead of the support device 46 for supporting the disc brush 26. The same advantages as with the support device 46 can be achieved by the use of the support device 150.

The support device 150 comprises a first connecting device 152 in the form of a parallelogram lift 154. Parallelogram lift 154 includes four legs 156, 158, 160, 162 coupled in a pivotal manner, of which legs 156, 160 are parallel to each other of parallelogram lift 154. Form a long side extending, and the legs 158 and 162 form a long side extending in parallel with each other. Leg 156 is fixed to the right support 50. The legs 158 are pivotally supported on the legs 156 and 160 about the horizontal pivot axes 164 and 166, and the legs 162 are supported on the legs 156 and 160 by the horizontal pivot axes 170 and 168. It is supported so that I can turn around.

The support device 150 also includes a second connection device 172, which forms a fixed, particularly torsionally rigid polygonal joint 174. Polygonal joint 174 consists of four joint members 176, 178, 180, 182 coupled in a pivotal manner to form a rectangular joint 175. The first joint member 176 is formed by the legs 162, and the second joint member 178 forms the side of the rectangular joint 175 disposed opposite the first joint member 176.

The disc brush 26 is supported by the joint member 178, which is centered on the horizontal pivot axis 184 at the lower end passing through the pivot axis 168 of the leg 160 forming the joint member 180. Is pivotally connected. The joint member 178 is pivotally connected about the horizontal pivot axis 186 to the joint member 182 formed by the adjusting member 90 on the side facing the right support 50. An end of the adjustment member 90 away from the disc brush 26 is connected to the first joint member 176 so as to be pivotable about the horizontal pivot axis 188. The pivot axis 188 extends close to the pivot axis 170.

Joints 169, 185, 187 and 189 are formed in pivot axes 168, 184, 186 and 188, respectively, which joints 176 and 180, 180 and 178, 178 and 182 and 182 and 176 ) Are connected to each other in a pivotal way. All the legs 156-162, the second joint member 178 and the adjusting member 90 lie in a vertical plane commonly defined by them.

The parallelogram lift 154 is in a known but not illustrated manner such that the disc brush 26, which is indirectly supported by the lift parallelogram, is lifted off or lowered above the bottom surface, for example floor unevenness. It may act to enable "floating" support of the disc brush 26 to compensate for this.

In addition, the inclination of the brush disk 82 relative to the floor surface by the adjusting member 90 connected to the steering steering angle detecting member 100 through the hydraulic line 98 not shown in FIG. Can vary. The variation of the length of the adjustment member 90 changes the shape of the rectangular joint 175, in particular the extension of the adjustment member 90 causes the brush disc 82 and the disc brush 26 in the direction of the vehicle center plane 19. Can be tilted. This causes the movement of the cleaning trajectory 114 in the direction of the vehicle center plane 19 as described above.

In order to enable extension of the adjustment member 90 when turning left, the steering steering angle detection member 100 may be shortened. This requires a control link formed in the opposite direction to the control link 108, such as a control ellipse in the longitudinal direction.

In another variant of the cleaning vehicle 10 a support device 200 for the support of the disc brush 26 is used instead of the support device 46. This is shown in a manner corresponding to FIG. 5 in FIG. 9. The same advantages as with the support device 46 can be achieved in the use of the support device 200. The support device 200 is partly configured identically to the support device 46 and the same reference numerals are used for the same features of the two support devices 46, 200.

Unlike the support device 46, the support device 200 comprises a first joint member 202, which is fixed to the right support 50 and has an inverted L shape. Instead of the joint member 64 formed by the adjustment member 90 in the case of the support device 46, the support device 200 comprises two joint members 204, 206. Of the joint members, the joint member 204 is rotatably supported by the joint 73 about the pivot axis 72 by the joint 73, and the joint member 206 is jointed by the joint 75. The member 60 is rotatably supported about the pivot axis 74. The joint members 204, 206 form a joint 209 with each other, where the joint members can be pivoted about a horizontal pivot axis 208 relative to each other. The support device 200 is thus a connecting device 210 in the form of a pentagonal joint 214 consisting of fixed and in particular torsionally rigid polygonal joints 212, in particular joint members 60, 62 and 202-206 in a common vertical plane. ).

The first end of the adjusting member 90 is connected to the joint 209. Since the member extends in the vertical direction and the second end is connected to the free end of the L-shaped joint member 202, the adjustment member 90 in the support device 200, unlike in the support devices 46 and 150. Is not part of the polygonal joint 212.

However, it is also possible for the support device 200 to change the inclination of the brush disk 82 in the direction of the vehicle center plane 19 under the movement of the cleaning trajectory 114 by the shortening of the adjusting member 90. If the adjusting member 90 is shortened in the manner described above, this causes the joint 209 to be lifted from the bottom surface. As a result, the joint members 204 and 206 forming the toggle lever 216 pivot about each other, thereby changing the shape of the pentagonal joint 214. As in the case of the support device 46, the joint member 60 is moved in the direction of the support 50, which pivots the disk brush 26 about the pivot axis 118 and in this connection of the cleaning trajectory 114. Cause movement.

10 cleaning vehicles
26, 28 Disc Brush
46, 150, 200 support device
59, 60, 62, 64 joint member
80 axis of rotation
84 brushes
90 adjustment member
118 pivot

Claims (25)

A disk brush 26 for sweeping dirt from the bottom surface to be cleaned, the brush 84 being fixed and comprising a brush disk 82 inclined with respect to the horizontal plane and which can be rotated about the axis of rotation 80; An adjusting device (92) comprising an adjusting member (90) for changing the inclination of the brush disc (82) with respect to a horizontal plane and for changing the contact area of the bottom surface with the brush (84); And a cleaning device (46; 150; 200) for supporting the disc brush (26) in the cleaning vehicle (10),
The support devices 46; 150; 200 are connected to joints 69, 71, 73, 75; 169, 185, 187, 189; 209, respectively, with respective joint members 58, 60, 62, 64; 176, 178, 180, 182; 202, 204, 206, comprising polygonal joints 56; 174, 212, which support the polygonal joints 56; 174, 212 to the cleaning vehicle 10. A first joint member (58; 176; 202) and a second joint member (60; 178) on which the disc brush (26) is supported,
The adjusting member 90 is formed to be changeable in length, and is connected to at least one joint member 58, 60, 62, 64; 176, 178, 180, 182; 202, 204, 206, in which case the According to the variation of the length of the adjusting member 90, the direction setting of the first joint members 58, 176; 202 with respect to the second joint members 60; 178 may be changed,
And said disc brush (26) can be pivoted about a pivot axis (118) inclined and aligned with respect to the axis of rotation (80). The method of claim 1, wherein the adjustment member 90 is at least one joint (73, 75; 187, 189) connecting the two joint members (58, 60, 64; 176, 178, 182; 204, 206) to each other 209, at least one joint member (58, 60; 176, 178; 204, 206). 3. The first end of the adjustment member (90) is connected to a joint (209) connecting the two joint members (204, 206) to each other, and the second end is supported by the cleaning vehicle (10). Cleaning vehicle, characterized in that. 3. A cleaning vehicle according to claim 2, wherein the adjustment member (90) forms a joint member (64; 182) of the polygonal joint (56; 174). The cleaning according to claim 4, wherein the second joint member (60; 178) and the adjusting member (90) are different joint members (60, 64; 178, 182) of the polygonal joint (56; 174). vehicle. 6. A cleaning vehicle according to claim 5, wherein the adjustment member (90) connects the first joint member (58; 176) and the second joint member (60; 178) to each other. The method of claim 1, wherein the first joint member (58; 176) and the second joint member (60; 178) are disposed opposite to the polygonal joint (56; Cleaning vehicle characterized in that to form a side. 8. Cleaning vehicle according to any one of the preceding claims, characterized in that the polygonal joint (56; 174) is a rectangular joint (66; 175). 9. A cleaning vehicle according to any one of the preceding claims, wherein the length of the adjustment member (90) can be adjusted to form a polygonal joint (56) as a parallelogram joint. 10. The cleaning vehicle according to claim 9, wherein the adjustment member (90) forms a long side of the parallelogram joint, and the second joint member (60) forms a short side of the parallelogram joint. The device as claimed in claim 1, wherein the support device (46; 150) comprises a parallelogram lift (154) for lifting and lowering the disc brush (26). One side of the side is a cleaning vehicle, characterized in that the first joint member (56; 176). 12. A cleaning vehicle according to any one of the preceding claims, wherein the first joint member (176) is movably supported by the cleaning vehicle (10). 12. Cleaning vehicle according to any one of the preceding claims, characterized in that the first joint member (58; 202) is immovably fixed to the cleaning vehicle (10). 14. The adjustment member (90) according to any one of the preceding claims, wherein the adjustment member (90) is disposed on the upper side of the polygonal joints (56; 212) away from the bottom surface, and the disk brush (26) is the polygonal joint. A cleaning vehicle, disposed below 56. 15. A cleaning vehicle according to any one of the preceding claims, characterized in that the polygonal joint (56, ® 212) defines a vertical plane. 16. A cleaning vehicle according to any one of the preceding claims, characterized in that the pivot axis (118) is aligned horizontally. 17. A cleaning vehicle according to any one of the preceding claims, characterized in that the pivot axis (118) is aligned vertically with respect to the rotation axis (80). 18. The cleaning vehicle according to any one of claims 1 to 17, wherein the rotating shaft (80) is inclined and aligned with respect to the floor surface regardless of the length of the adjustment member (90). The steering angle detection according to any one of claims 1 to 18, wherein the adjustment device (92) is operatively coupled with the adjustment member (90) for detecting the steering angle of the steering wheel (22) of the cleaning vehicle (10). And a member (100), in which case the length of the adjustment member (90) can be adjusted according to the steering angle of the steering wheel (22). 20. The apparatus of claim 19, wherein the adjustment device 92 includes a force guide 104 for the steering angle detection member 100, which is adjustable according to the steering angle of the steering wheel 22, with reference to the position of the force guide. And the detecting member detects a steering angle of the steering wheel. 21. A cleaning vehicle according to claim 20, wherein the force guide (104) is a sliding guide (108). 22. The method according to any one of claims 19 to 21, wherein the steering angle detection member 100 and the adjustment member 90 are connected via a hydraulic line 98 to a master-piston-cylinder-unit 88 of a hydraulic system. 94) or a slave-piston-cylinder-unit (88, 94). 23. The brush disc 82 according to any one of claims 1 to 22, wherein the brush disc 82 can be tilted toward the vehicle center 19 of the cleaning vehicle 10 by a change in length of the adjustment member 90. Cleaning vehicle, characterized in that. 24. The cleaning vehicle 10 according to any one of claims 1 to 23, wherein the cleaning vehicle 10 is disposed behind the disk brush 26 in the longitudinal direction of the vehicle and behind the auxiliary disk brush 30. And a waste collection device 24 disposed in this case, in which case the auxiliary disk brush 30 may be lifted from the side surface of the cleaning vehicle 10 when driving straight, and cornering of the cleaning vehicle 10 is performed. Cleaning vehicle, characterized in that descending on the floor surface when. 25. The cleaning vehicle (10) according to any one of the preceding claims, wherein the cleaning vehicle (10) comprises two disk brushes (26, 28) formed symmetrically with each other, the brushes being disposed opposite the cleaning vehicle (10). Cleaning vehicle, characterized in that disposed on the side.

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