WO2015165547A1

WO2015165547A1 - Add-on device for a vehicle, and vehicle

Info

Publication number: WO2015165547A1
Application number: PCT/EP2014/058978
Authority: WO
Inventors: Ralph Werba; Achim WÜRTH
Original assignee: Alfred Kärcher Gmbh & Co. Kg
Priority date: 2014-05-02
Filing date: 2014-05-02
Publication date: 2015-11-05
Also published as: DE212014000262U1

Abstract

The invention relates to an add-on device for a vehicle (10), which add-on device has a ground-processing unit (50). The add-on device comprises a retaining body (54), at least one tool (56), which is arranged on the retaining body (50), and a first fastening apparatus (52), which is arranged on the retaining body (54) and by means of which the first ground-processing unit (50) can be detachably fastened to the vehicle (10), wherein the first ground-processing unit (50) has a second fastening apparatus (66), to which a second ground-processing unit (68) can be detachably fastened, wherein the second ground-processing unit (68) can be transported by the vehicle (10) by means of the first ground-processing unit (50).

Description

Mounting device for a vehicle and vehicle

The invention relates to a mounting device for a vehicle, comprising a first floor treatment unit, wherein said first floor treatment unit comprises a holding body, at least one tool, which is arranged on the holding body, and a first fixing device, which is arranged on the holding body and on which the first tillage unit is releasably fixable to the vehicle includes includes.

The invention further relates to a vehicle and in particular cleaning vehicle. From DE 43 36 821 AI a lawn tractor with mower and sweeper in front construction is known.

From DE 103 25 180 B4 a care device for the maintenance and / or processing of green areas is known.

From DE 199 19 723 AI a lawn mower is known which a

Having cutting device and a cutting device upstream Kehreinrichtung. From DE 199 25 075 AI a sweeping mower is known.

From DE 10 2006 055 503 Al a device for processing soils in riding companies is known. From DE 20 2013 001 375 U l a coupling plate structure of a tool change member is known. From EP 1 098 038 AI a multifunctional self-propelled vehicle is known.

The invention has for its object to provide a hitch of the type mentioned, which allows flexible use.

This object is achieved according to the invention in the attachment mentioned above in that the first floor treatment unit has a second fixing device to which a second tillage unit is detachably fixable, wherein the second tillage unit is transportable by the vehicle by means of the first tillage unit.

The first soil treatment unit has an additional function in the solution according to the invention; it forms a transport platform for the second soil cultivation unit, by means of which the second soil cultivation unit (together with the first soil cultivation unit) can be transported to a place of use.

If the vehicle itself has no further transport function, because it is designed accordingly, then it is necessary if several tillage units must be brought to a job site to perform multiple trips with a vehicle or multiple vehicles must be used. By means of the solution according to the invention, two soil cultivation units can be brought to the place of use in one journey.

For example, if the first soil working unit is a mowing device, in practice it is often necessary to perform a sweeping operation in an environment of the mown grass surface after a mowing operation. In principle, both a mowing operation and a sweeping operation can be carried out by means of a corresponding multifunctional vehicle. If the vehicle is a cleaning vehicle and has, for example, a container device for dirt and a suction unit, etc., then the vehicle itself has no room for the transport of another ground processing. processing unit. A (first) soil tillage unit can be transported by attachment to the vehicle. In the solution according to the invention, the first floor treatment unit is then used accordingly to transport the second floor treatment unit. Either the first soil working unit or the second soil working unit can then be used at the place of use.

The first soil cultivation unit and the second soil cultivation unit are attached to the vehicle depending on the application. This results in optimized tillage operations. For a first tillage with the first tillage unit, there is no need to compromise on the second tillage unit and vice versa. The solution according to the invention makes it possible to achieve a flexible and optimized use in terms of time and effort with a simple structural design.

In a structurally favorable embodiment, the second fixing device is arranged on the holding body or the first fixing device. It can thereby be transported with relatively little effort, the second tillage unit by means of the first tillage unit to the site.

Conveniently, the second floor treatment unit has a third fixing device, by means of which the second floor treatment unit can be detachably fixed to the vehicle. In the case of tillage, either the first tilling unit or the second tilling unit is then (detachably) fixed to the vehicle. In particular, the at least one tool of the first soil cultivation unit is a mowing tool. The mowing tool in turn is in particular a rotating driven cutting blade. The first soil working unit is then a mowing unit. It is also favorable if the second floor treatment unit has a fourth fixing device, by means of which the second floor treatment unit can be fixed to the second fixing device of the first soil cultivation unit. As a result, a secure and, for example, positive fixing of the second floor treatment unit on the first floor treatment unit for transport can be achieved. In turn, the second soil working unit may be relatively easily removed from the first soil working unit to perform soil working by the first soil working unit and then to mount the second soil working unit to the vehicle for soil working by the second soil working unit.

It is favorable if the second floor treatment unit has a holding body on which at least one tool is arranged. This results in a structurally simple structure.

In particular, the at least one tool of the second soil cultivation unit is a cleaning tool and in particular sweeping tool. For example, the sweeping tool is a rotary sweeping brush.

It is advantageous if a third fixing device and / or a fourth fixing device are arranged on the holding body of the second floor processing unit. The third fixing device serves to fix the second floor treatment unit to the vehicle. The fourth fixing device is used for fixing the second floor treatment unit to the second fixing device of the first floor treatment unit. The fourth fixing device can be arranged directly on the holding body or arranged on the third fixing device, which is arranged on the holding body.

It is advantageous if the holding body of the first floor treatment unit has a lower side, which in the case of a fixing device fixed to the vehicle facing a floor to be processed, and having an upper side facing away from the underside, wherein a fixing region of the second fixing device is positioned at or above the upper side. As a result, the "free" upper side of the first floor treatment unit is used for the transport of the second floor treatment unit. The second fixing device thus does not interfere with a soil cultivation operation by means of the first soil cultivation unit.

In a structurally favorable embodiment, the second fixing device on a support area with a support surface on which a counter area of the second floor treatment unit can be placed, wherein in particular the support surface with fixed to the vehicle first tillage unit based on the direction of gravity horizontally or at an acute angle of oriented at a maximum of 30 ° to the horizontal (when the vehicle is placed on a horizontal). As a result, the second floor treatment unit can be brought into contact with the second fixing device in a simple manner and fixed there, and the second floor treatment unit can be detached in a simple manner from the first floor treatment unit. The effort and in particular effort for an operator for a fixing process and dissolution process can be kept low.

In one embodiment, at least one holder for a hose is arranged on a transverse wall to the support area. As a result, the second fixing region with its transverse wall can also be used for optimized holding of components of the first soil cultivation unit and / or second soil cultivation unit.

For example, at least one holder for a water hose and / or at least one holder and in particular a holding hole for a hydraulic hose is arranged on the transverse wall. By way of example, this makes it possible to hold a water hose for the second soil cultivation unit. It is also advantageous if at least one limiting element is arranged on a wall which forms the support surface, which has a blocking surface transversely to the support surface. The at least one delimiting element may facilitate the insertion and also the lifting of the second tilling unit from the first tilling unit. For example, the second tilling unit with a corresponding partial area can be applied to the at least one delimiting element and then be brought from this position into the final position. As a result, a "threading" of a corresponding counter area in the contact area of the second fixing device is facilitated.

In particular, the at least one delimiting element delimits the supporting region to one side and is designed as a centering aid when inserting the second soil cultivation unit. When inserting the second

Soil processing unit to the second fixing device initially satisfies a coarse alignment with the at least one limiting element as centering, before then (with reduced force) a final position is produced. This results in an optimal operability when mounting and also releasing the second soil tillage unit to or from the first tillage unit.

In an advantageous embodiment, the second fixing device of the first floor treatment unit and an associated fourth fixing device of the second floor treatment unit have a dip-dip dipping opening device, which comprises at least one dipping pin and an associated dipping opening. The fourth fixing device is used for fixing the second floor treatment unit to the second fixing device. By means of a dip-dip dipping opening device, it is possible in a simple manner to achieve a positive transverse mobility blocking.

In particular, in the case of a dipping pin immersed in an immersion opening, a transverse mobility, in particular transversely to the direction of gravity, is the second tillage unit locked to the first tillage unit. Such blocking can be achieved with little design effort. In particular, at least two spaced immersion pins are provided to achieve easy blocking of transverse mobility in different directions.

In a structurally favorable embodiment, the at least one immersion pin has a first boundary plane and has a second boundary plane, wherein the second boundary plane is parallel to the first boundary plane. As a result, a corresponding immersion pin can be integrated in a simple manner into a transverse wall and in particular can be formed integrally therewith.

It is favorable if the at least one immersion pin has a width which widens starting from an upper end. As a result, the introduction of the at least one dipping pin is facilitated in an associated immersion opening.

In particular, the at least one immersion pin is rounded at least in the region of a front end and in particular has a circular boundary. On the one hand, this makes it possible to achieve simple immersion and, on the other hand, a reliable transverse mobility lock can then be achieved with complete immersion.

It is favorable if the at least one immersion opening is circular. As a result, a centering can be achieved in a simple manner, whereby a "threading" of the dipping pin is facilitated in the immersion opening.

In one embodiment, the at least one dipping pin is arranged on the second fixing device and the associated dipping pin is arranged on the second fixing device. Opening is arranged on the fourth fixing device. This results in a simple threading.

In particular, the at least one immersion pin is arranged on a transverse wall to a support surface for a counter region of the fourth fixing device and, for example, integrally formed on this transverse wall. As a result, simple threading can be achieved with a constructively low outlay.

It is favorable if a lift-off protection for the second tillage unit is provided in relation to lifting off the first tilling unit. It can thereby achieve a height fixation with respect to lifting. The lift-off protection comprises at least one linearly flexible element, such as a chain or a rope, which is fixed or fixable on the second floor treatment unit and the first floor treatment unit. This makes it easy to achieve a detachable lift-off.

In particular, the lift-off securing device comprises at least one fixing element, which is arranged on the second fixing device and on which a linearly flexible element, which is arranged on the first floor treatment unit, can be detachably fixed. The at least one fixing element is for example a bolt to which a rope or a chain or the like can be fixed. It is particularly advantageous when the second fixing device has at least one receiving element for the second floor treatment unit, which is arranged pivotably on the first floor treatment unit. The at least one receiving element in particular provides a receiving space or a contact surface (support surface) for a counter area of the second floor processing unit. By a pivotable arrangement on the first floor treatment unit and in particular on the second fixing device, a protective position can be set for the at least one receiving element, in which protruding parts are minimized. when the second soil tilling unit is not fixed to the first tilling unit. This reduces the risk of injury to an operator. It is thereby also possible in particular to reduce height dimensions of the first soil cultivation unit with the second fixation device, for example for storage.

In particular, a pivot axis is at least approximately parallel to a first support surface of the second fixing device for a fourth fixing device on the second floor processing unit. As a result, the at least one receiving element can be folded away to the side in order to achieve a protective position.

It is advantageously provided a first pivot position of the at least one receiving element, on which the second tillage unit is fixable to the first tillage unit, and there is provided a second pivot position of the at least one receiving element, in which the at least one receiving element is in a protective position. There are then in particular two excellent pivot positions. It can thereby realize a structurally simple structure.

In the second pivot position, a transverse wall of the at least one support element is advantageously oriented at least approximately parallel to an upper side of the holding body of the first floor treatment unit and / or a wall of the at least one receiving element with a support surface for the second floor treatment unit is transversely and in particular at least approximately perpendicular to the holding body the first tillage unit positioned. As a result, a protective position with minimized height dimensions can be achieved in a simple manner. It is also advantageous if a locking device for securing the first pivot position and / or the second pivot position is provided. This makes it easy to use the second floor treatment unit on the at least one receiving element. In a structurally simple embodiment, the locking device comprises a spring device. In one embodiment, a first receiving element and a spaced-apart second receiving element are provided, wherein the first receiving element and the second receiving element opposing

Have pivoting directions in the transition from a first pivot position to a second pivot position. In particular, the first receiving element and the second receiving element are spaced apart with an intermediate space between them. In the intermediate space corresponding parts of the second soil working unit can be added. By the first receiving element and the second receiving element, a large support surface for a secure fixing of the second floor treatment unit to the second fixing device and thus to the first floor treatment unit is provided.

In one embodiment, a holder for a further tool, such as for a mulching insert, is arranged on the second fixing device. This results in more uses.

It can be provided that the second fixing device is releasably fixed to the holding body. This can be advantageous, for example, during the storage of the first fastening unit; By removing the second fixing device, in particular, the height dimensions are reduced.

It is particularly advantageous if the second fixing device is arranged on the first floor-processing unit in such a way that it does not hinder a ground-working operation by means of the first floor-treating unit. It must then be solved for a tillage operation by means of the first floor treatment unit, not the second fixing device of the first floor treatment unit. This results in a simple operation. Furthermore, it is advantageous if the second fixing device and an associated fourth fixing device of a second floor processing unit are designed such that when the second floor machining unit is fixed to the first floor machining unit, a tool of the second floor machining unit does not touch the first floor machining unit. As a result, the corresponding tool is not mechanically stressed. For example, sweeping bristles of a sweeping brush are then not bent over or there is no mechanical action of the first soil cultivation unit on a spray nozzle. This results in an optimized transport of the second soil cultivation unit by means of the first soil cultivation unit.

According to the invention, a vehicle and in particular a cleaning vehicle is provided, to which a mounting device according to the invention is fixed.

The vehicle according to the invention has the already explained in connection with the hitch invention advantages.

In particular, the hitch is positioned at a front of the vehicle. During a machining operation, the operator (driver) of the vehicle then has the corresponding processing surface in view.

The vehicle has, in particular, a front-mounted headlamp device, wherein the second ground-working unit is arranged on the first ground-working unit in such a way that a light cone of the front-light device is not shaded. The second fixing device is designed in cooperation with the second floor treatment unit so that when fixed second floor treatment unit no such height is achieved that is penetrated into the light cone of the headlight device. This results in flexible application options. The vehicle has in particular a front cabin. Behind the front cabin, a container device can be arranged. The vehicle is in particular self-propelled, that is, has an engine.

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

Figure 1 shows an embodiment of a vehicle with an attached

Sweeping unit (second tillage unit) in a sweeping operation;

FIG. 2 shows a partial view of the vehicle according to FIG. 1 with an attached mowing deck (first floor treatment unit) in a non-insertion position;

FIG. 3 a partial representation of the vehicle according to FIG

A hitch comprising the first soil working unit and the second soil working unit fixed to the first soil working unit;

Figure 4 is a schematic representation of an embodiment of the second soil working unit and a (second) fixing device of the first soil working unit;

Figure 5 is the same view as Figure 4, wherein the second floor treatment unit is fixed to the (second) fixing device;

Figure 6 (a) an embodiment of the second fixing device in a perspective view in a first pivotal position of receiving elements; Figure 6 (b) is the same view as Figure 6 (a) with the receiving elements in a second pivot position; and

Figure 7 is the same view as Figure 6 (a), wherein at the second

Fixing device is held another tool.

An exemplary embodiment of a vehicle, which is shown in FIGS. 1 to 3 and denoted by 10 there, comprises a chassis 12. The chassis 12 is designed, for example, as an articulated steering with a front part 14 and a rear part 16, the front part 14 and the rear part 16 are connected via a pivot bearing 18.

On the chassis 12, a front wheel 20 and a rear wheel device 22 are arranged. In one exemplary embodiment of an articulated steering wheel, the front wheel device 20 is arranged on the front part 14 and the rear wheel device 22 is arranged on the rear part 16.

A pivot axis 24 of the pivot bearing 18 is arranged transversely to the wheel axles of the front wheel 20 and the rear wheel 22.

On the chassis 12, a front cabin 26 is arranged for a driver. The front cabin 26 has a front shield 28. It also has a side door 30.

The front cabin 26 is arranged in particular on the front part 14.

On a front side 32 of the front cabin 26, a front headlamp device 34 is arranged. The headlamp device 34 in particular comprises two spaced headlights.

The headlamp device 34 is arranged at a height distance from a floor 36, on which the vehicle 10 with the front wheel device 20 and the rear wheel 22 rises. The headlight device 34 is arranged in particular in a central region of the front cabin 26 relative to a height of the front cabin 26. On the chassis 12, a container device 38 is further arranged. The container device 38 serves to receive dirt.

The container device 38 is arranged in particular on the rear part 16 of the chassis 12.

In one embodiment, the vehicle 10 is a cleaning vehicle. It has a suction device 40. Dirt can be sucked in via the suction device 40 and received in the container device 38. A suction pipe 42 is connected to the container device 38 and opens at an underside of the chassis 12 in order to be able to suck off dirt from a floor 36 to be cleaned.

To the chassis 12, a suction unit is arranged for this purpose (not shown in the drawings), which generates the necessary negative pressure for sucking in dirt.

The vehicle 10 is self-propelled. It has a motor which rotatably drives the front wheel device 20 and / or the rear wheel device 22.

On the chassis 12, in the region of a front end 40, which is formed in particular on the front part 14, a holding device 46 is arranged, on which a soil working unit 48 can be fixed. In the embodiment shown in FIG. 1, the soil working unit 48 is a sweeping unit with a sweeping brush. This tillage unit will be described in more detail below as a second tillage unit. The floor treatment unit 48 is an attachment device which can be releasably fixed to the vehicle 10 at a front end of the vehicle 10 and thereby in the region of the front end 44 of the chassis 12. About the soil working unit 48 can perform a soil treatment.

An exemplary embodiment of a mounting device 49 according to the invention (FIGS. 1 to 7) comprises a first soil working unit 50. The first soil cultivation unit 50 has a first fixing device 52, by way of which the first soil cultivation unit 50 can be detachably fixed to the vehicle 10.

FIG. 2 shows a view of the vehicle 10 with a fixed first soil working unit 50, wherein the first soil working unit 50 is in a non-working position. This non-working position is a transport position.

The first grounding unit 50 can be fixed to the holding device 46 via the first fixing device 52. The first soil working unit 50 has a holding body 54. At this holding body 54, the first fixing device 52 is arranged.

At least one tool 56 for tillage is further arranged on the first holding body 54.

In one embodiment, the first soil working unit 50 is a mowing unit (mower deck) over which grass is mowable.

The at least one tool 56 is then a mowing tool which has one or more cutting blades. The one or more cutting blades are driven in particular rotating. For example, a drive of the at least one tool via a corresponding drive means of the vehicle 10, wherein via the holding device 46 and the first fixing device 52, the corresponding drive torque is transmitted to the at least one tool 56.

In an alternative embodiment, a drive for the at least one tool 56 is arranged on the holding body 54. An energy supply of the corresponding drive takes place, in particular, via the vehicle 10. In one exemplary embodiment, the first fixing device 52 is designed such that the first floor processing unit 50 is fixed in height-adjustable manner on the vehicle 10. The height adjustment can be done via a vertical displacement and / or pivoting. In a non-working position (as shown in FIG. 3), the vehicle is mobile and the first ground handling unit 50 is in a non-deployed position.

In one embodiment, the first soil working unit 50 has one or more wheels or rollers 58. These are arranged in the region of a front end 60 of the holding body. In a position of use of the first soil working unit 50, this is supported via the roller or rollers 58 or wheels on the ground 36 to be processed.

The holding body 54 has an underside 62, which faces the bottom 36 to be processed. It also has an upper side 64 facing away from the underside 62.

At the top 64 a second fixing device 66 is arranged. The second fixing device 66 is used for releasably fixing a second floor treatment unit 68 and thereby for transporting the second floor treatment unit 68 by means of the first floor treatment unit 50. In one embodiment, the second tilling unit 68 corresponds to the tilling unit 48, that is, the second tilling unit 68 is a sweeping unit. The second fixing device (FIGS. 4 to 7) comprises a column 70. The column 70 is arranged on the holding body 54 of the first soil working unit 50. It may be fixedly (permanently) arranged on the first soil working unit 50 or be detachably fixed thereto. On the pillar 70, a first receiving element 72 and a second receiving element 74 are arranged in an upper region. The first receiving element 72 and the second receiving element 74 are pivotable about respective pivot axes 76a, 76b. The first pivot axis 76a and the second pivot axis 76b are parallel to each other. They are oriented transversely and in particular perpendicular to a height extension axis 78 of the column 70 above the upper side 64 of the holding body 54. The first receiving element 72 and the second receiving element 74 each have a wall 80, on which a bearing surface 82 is formed. The support surface 82 is flat.

On the wall 80 sits a transverse wall 84. The transverse wall 84 is transverse and in particular perpendicular to the wall 80. It is, for example, integrally connected thereto.

The wall 80 in turn is arranged on a holding region 86. A pivot bearing 88 is seated on the holding region 86, which enables the rotation of the corresponding receiving element 72 about the first pivot axis 76a or 74 about the second pivot axis 76b. About the corresponding

Swivel bearing 88, the first receiving element 72 and the second receiving element 74 is connected to the column 70. The receiving elements 72, 74 have in combination a first pivoting position 90 (FIGS. 4, 5, 6 (a)), which is a fixing position for the second ground-working unit 68. In the first pivot position 90, the respective contact surfaces 82 of the first receiving element 72 and 74 lie in one plane. They are transverse and in particular perpendicular to the height direction of extension 78th

When the vehicle 10 is set up as a floor 36 in a horizontal plane with respect to the direction of gravity, and the hitch is mounted on the vehicle 10, the support surface 82 is oriented parallel to a horizontal 92 or at a small acute angle 94 to the Horizontal 92. The acute angle 94 is in particular less than or equal to 30 °. In particular, the support surface 82 is (approximately) parallel to the horizontal 92 when the second floor treatment unit 68 is in an insertion position.

In the first pivoting position 90, the transverse wall 84 of the respective receiving element 72, 74 lies parallel to the height direction axis 78.

The first receiving element 72 and the second receiving element 74 can be brought from the first pivot position 90 in a second pivot position 96 (Figure 6 (b)). When transferring the first receiving element 72 and the second receiving element 74 by pivoting about their respective pivot axis 76a, 76b from the first pivot position 90 into the second pivot position 96, the first receiving element 72 and the second receiving element 74 are pivoted opposite. If, accordingly, the receiving elements 72, 74 are brought from the second pivot position 96 in the first pivot position 90, then they are also pivoted in opposite pivot directions. The holding region 86 has a wall 98. This wall 98 is oriented parallel to the corresponding transverse wall 84. In the first pivoting position 90, this wall 98 of the holding region 86 is parallel to the vertical extension axis 78 of the pillar 70.

In the second pivoting position (FIG. 6 (b)), the wall 98 forms an upper side of the second fixing device 66. The wall 80 with the contact surface 82 lies parallel to the vertical extension axis 78. The wall 98 lies transversely and in particular perpendicular to the vertical extension axis 78. wall 84 again lies transversely and in particular perpendicular to the vertical extension axis 78.

In the second pivoting position 96, the first receiving element 72 and the second receiving element 74 are folded away laterally outward. As a result, the height of the second fixing device 66 is lowered in the vertical extension axis 78 and results in a "smooth" top of the second fixing device 66. In particular, in the second pivot position 96 corresponding wall surfaces 100 of the corresponding walls 98 of the first receiving element 72 and the second receiving element 74th in a plane.

The second pivoting position 96 is a protective position for an operator, in particular to reduce the risk of injury by upwardly projecting parts of the first receiving element 72 and the second receiving element 74.

If, for example, the first soil working unit 50 is in operation as a mowing unit, then first the first receiving element 72 and the second receiving element 74 are brought into the second pivoting position 96.

In one exemplary embodiment, a contact element 102, for example in the form of a piece of sheet metal, is arranged on the pillar 70, in each case the first receiving element 72 and the second receiving element 74. The investment element has a contact surface 104. This is arranged on the front side of the contact element 102. In the second pivoting position 96, the respective receiving element 72 or 74 rest against the contact surface 104. The first receiving element 72 and the second receiving element 74 is assigned a locking device 106. By this locking device 106, the first pivot position 90 and the second pivot position 96 can be secured and in particular secure non-positively. In one embodiment, the latch 106 includes a spring means 108 having a first (pull) spring 110a and a second (pull) spring 110b. The first spring 110a is articulated to the column 70 via a corresponding link 112. The second spring 110b is also articulated to the column 70 via the linkage 112. At another end, the first spring 110 a is articulated to the first receiving element 72. The second spring 110b is hinged at another end to the second receiving element 74. Via the spring device 108 and the first receiving element 72 and the second receiving element 74 are coupled together. In particular, the coupling is such that by pivoting a receiving element (for example, the receiving element 72 or the receiving element 74), the other receiving element (then the receiving element 74 and the receiving element 72) is mitverschwenkt. The first spring 110a is articulated to the first receiving element 72 at a first articulation point 114a. For example, a spring end is designed as a hook which engages around a pin at the first articulation point 114a. Accordingly, the second spring 110b is articulated via an articulation point 114b to the second receiving element 74. The relative position of the first articulation point 114a and the second articulation point 114b to the articulation 112 ("center articulation") of the first spring 110a and the second spring 110b varies with the pivoting position. In one embodiment lies in the first

Swivel position 90, the pivot point 114a and the pivot point 114b above the first pivot axis 76a or 76b and above the linkage 112, with respect to the height extension axis 78. See Figure 6 (a).

In the second pivot position 96, in one exemplary embodiment, the articulation points 114a, 114b lie below the first pivot axis 76a or 76b and at least approximately at the same height as the linkage 112.

The second fixing device 66 is formed symmetrically, that is, the first articulation point 114a and the second articulation point 114b are at the same height relative to the height extension axis 78. The position of the first articulation point 114a and the second articulation point 114b in the second pivot position 96 is characterized by the system of the first receiving elements 72, 74 with their respective transverse wall 84 at the associated contact surfaces 104 determined.

The distance of the first articulation point 114a to the second articulation 112 (and corresponding to the second articulation point 114b to the articulation 112) in the second pivot position 96 is greater than in the first pivot position 90. This means that for the transfer from the first pivot position 90 in the second pivot position 96 a corresponding spring force must be overcome. As a result, a non-positive locking is produced in the first pivot position 96. In one embodiment, the locking device 106 is arranged symmetrically with respect to the height extension axis 78, that is, a corresponding spring means 108 is disposed on both sides of the column 70, wherein the corresponding spring means 108 'is formed the same as the spring means 108. Between the spring means 108 and the beab standing spring device 108 ', the first receiving element 72 and the second receiving element 74 are then arranged. In the first receiving element 72 and the second receiving element 74 is followed by the transverse wall 84, a further transverse wall 116, which is oriented transversely to the wall 80 with the support surface 82 and is oriented transversely and, for example, at an acute angle to the transverse wall 84. Through the further transverse wall 116, a blocking surface in a direction 118 which is parallel to the first pivot axis 76a and the second pivot axis 76b is provided "to the rear".

On the respective wall 80 of the first receiving element 72 and the second receiving element 74, a limiting element 120 is arranged, which is in particular designed pin-shaped. This delimiting element 120 projects upwards on an end face of the wall 80 and thereby projects beyond the support surface 82 in the vertical extension axis 78. The corresponding limiting element 120 blocks a mobility of one used in the first pivot position 90 in the receiving elements 72, 74

Counter element of the second tilling unit 68 in the direction 118 "forward", that is, in the opposite direction to the direction of the further transverse wall 116 out. The limiting elements 120 serve as a centering aid when inserting the second floor treatment unit 68 when the receiving elements 72, 74 are in the first pivoting position 90. With a corresponding area, a fixing part of the second floor processing unit 68 can then be ajar against the delimiting elements 120 and lowered there already positioned onto the contact surface 82. This will be explained in more detail below.

The transverse wall 84 of the first receiving member 72 and the second receiving member 74 is provided with a dipping pin 122 of a dipping pen dipping device 124, respectively. The immersion openings 126 assigned to the immersion pins 122 are arranged on the second floor treatment unit 68. The corresponding immersion pin 122 is in particular integrally formed on the transverse wall 84 and projects in the vertical extension axis 78 upwards.

An immersion pin 122 has a first boundary plane 128 and a second boundary plane 130. The immersion pin 122 extends between the first boundary plane 128 and the second boundary plane 130. The first boundary plane 128 and the second boundary plane 130 lie parallel to one another. In particular, the first boundary plane 128 and the second boundary plane 130 are corresponding boundary surfaces of the transverse wall 84.

The respective dipping pin 122 has a varying width B. It has a front end 132. This front end 132 has the greatest distance to the top 64 in the height extension axis 78. Starting from this front end 132 in a direction 134 towards the top 64, the width B decreases steadily. In particular, the immersion pin 122 is formed symmetrically. It is in particular rounded, so that a boundary line (limiting contour) is curved between the first boundary plane 128 and the second boundary plane 130. This boundary line is in particular a circle (segment) line.

In one exemplary embodiment, a first holder 136 for a water hose for the second floor treatment unit 68 is arranged on at least one transverse wall 84 and, for example, on the transverse walls 84 of both the first receiving element 72 and the second receiving element 74.

Furthermore, a second holder 138 is arranged in particular in the form of a holding hole for one or more hydraulic hoses of the second tilling unit 68.

On the column 70, one or more fixing elements 140 are arranged, for example in the form of bolts. By means of these fixing elements 140, a lift-off protection 142 is formed, via which a lifting of the second Bottom processing unit 68 can be secured by the second fixing device 66 when, in the first pivoting position 90 of the receiving elements 72, 74, the second ground-working unit 68 is inserted into the receiving elements 72, 74.

The second floor processing unit 68 (FIGS. 4, 5) has a holding body 144. On the holding body 144 of the second tilling unit 68, in one embodiment, as sweeping tools, a first sweeping brush 146a and, spaced therefrom, a second sweeping brush 146b are arranged. These sweeping brushes 146a, 146b are associated with a respective drive motor 148a, 148b. This drive motor 148a, 148b is, for example, an electric motor, which is supplied with electrical energy via the vehicle 10, or a hydraulic drive, which can be connected, for example, to a hydraulic system of the vehicle 10.

On the holding body, a third fixing device 150 is arranged. By means of this third fixing device 150, the second floor treatment unit 68 can be fixed to the vehicle 10 on the holding device 46 in order to carry out a corresponding sweeping of the floor 36 by means of the second floor processing unit 68 (see FIG. 1).

On the holding body, a fourth fixing device 152 is further arranged. This fourth fixing device serves to fix the second floor treatment unit 68 to the first floor treatment unit 50 and there to the second fixing device 66.

In one exemplary embodiment (compare FIGS. 4 and 5), the fourth fixing device 152 is arranged on or integrated in the third fixing device 150. This results in a compact design.

The fourth fixing device 152 comprises a fork element 154 with a central web 156. At this central web 156 are spaced transverse webs 158a, 158b ("tines") arranged. When the receiving elements 72, 74 in the first pivot position 90, then the center web 156 can be applied to the support surface 82 of both the first receiving element 72 and the second receiving element 74. The crossbar 158a is applied to the support surface 82 of the first receiving member 72 and the spaced transverse web 158b is applied to the support surface 82 of the second receiving member 74.

At the central web 156 a first immersion opening 160a and a second immersion opening 160b are spaced apart. These form the immersion pin immersion opening device 124 with the immersion pins 122. The first immersion opening 160a is assigned to the immersion pin 122 of the first accommodating element 72 and the second immersion opening 160b is assigned to the immersion pin 122 of the second accommodating element 74.

The immersion openings 160a, 160b are configured in particular circular.

The first receiving element 72 and the second receiving element 74 are arranged on the column in a direction transverse to the pivot axes 76a, 76b spaced, that is, between them, a gap 162 is formed.

If the second floor treatment unit 68 is fixed to the second fixing device 66 via its fourth fixing device 152, then corresponding elements and in particular at least partially the third fixing device 150 can be positioned in the intermediate space 162.

In one embodiment, a holder 164 for a further tool 166 (FIG. 7) is arranged on the column 70. The further tool 166 is in particular a mulching insert, which can be used in a mowing operation.

The attachment device 49 according to the invention functions as follows:

Due to the container device 38, the vehicle 10 does not have a take-up station for a further ground-handling unit. This raises the fundamental problem that when, for example, the first groundbreaking 50, the ground 36 is to be processed, for example, a mowing is to be performed, for a subsequent sweeping by means of the second tillage unit 68 another transport vehicle to provide the second tillage unit 68 must be provided or the vehicle 10 has to go back to a storage place to to pick up the second tilling unit 68.

In the solution according to the invention, the first soil cultivation unit 50 forms a transport device for the second soil cultivation unit 68, via which the second soil cultivation unit 68 can be transported to a place of use. Both the first soil cultivation unit 50 and the second soil cultivation unit 68 for soil cultivation are then available at the place of use. The first soil working unit 50 is provided with the second fixing device 66 for this purpose.

The second tilling unit 68 is fixed to the first tilling unit 50 when the first receiving member 72 and the second receiving member 74 are in the first pivoting position 90 (FIGS. 4, 6 (a)). The first soil working unit 50 is mounted on the vehicle 10 via the first fixing device 52.

The second tilling unit 68 is set from above (with respect to the direction of gravity g) in the receiving elements 72, 74. In particular, the central web 146 of the second fixing device 154 is applied from above to the limiting elements 120 and then completely drained. As a result, the immersion pins 122 dip into the associated immersion openings 160a, 160b. Corresponding elements of the second tray processing unit 68 may be received in the space 162. By the application of a corresponding counter region of the fourth fixing device 152 to a contact region of the second fixing device 66 and the immersion of the immersion pins 122 in the immersion openings 160a, 160b and due the transverse walls 84 and 116, a transverse mobility of the second tillage unit 68 is secured to the first tillage unit 50 to the height extension axis 78. By the lift-off 142 a mobility at least with respect to lifting in the vertical extension axis 78 is secured. For this purpose, (at least) a linearly flexible element, such as a chain or a rope, is arranged, in particular, on the second floor treatment unit 68 and, in particular, on the fourth fixing device 152. This is then secured to the one or more fixing elements 140 in the region of another end.

In the corresponding fixing position of the second floor treatment unit 68 on the first floor treatment unit 50, both the second floor treatment unit 68 and the first floor treatment unit 50 can then be transported to a place of use.

The corresponding hitching device is designed (see FIG. 3) such that the second tilling unit 68 does not protrude into a light cone 170 of the front headlamp device 34, that is to say it does not shade it.

At the point of use, the second soil working unit 68 is then detached from the first soil working unit 50. For this purpose, the linearly flexible elements 168 of the anti-lift device 142 are released from the one or more fixing elements 140. With a process that is reverse to an insertion process, the second floor treatment unit 68 can be lifted. She is then put aside.

When the second floor treatment unit 68 is fixed to the first floor treatment unit 50, the sweeping brushes 146a, 146b and also further

Elements such as spray nozzles 172 of the second tilling unit 68 are spaced apart from corresponding elements of the first tilling unit 50. In particular, these are transported "freely suspended". advantage. As a result, they are protected against damage. In particular, bristles 174 of the second tilling unit 68 are not mechanically stressed by the fixation by the transport by means of the first tilling unit 50.

For use of the first soil working unit 50 at the place of use, the second soil working unit 68 is removed and set aside as described. For use, and in particular Mähinsatz the first soil working unit 50 is brought from the position shown in Figure 3 in an insertion position.

After completion of the appropriate use and in particular mowing operation, the first floor treatment unit 50, which is fixed by means of the first fixing device 52 to the vehicle 10, released from the vehicle 10 and set aside. The second floor treatment unit 68 is then fixed to the holding device 46 of the vehicle 10. It can then be carried out a tillage and sweeping (see Figure 1). For example, after a mowing operation in a vicinity of the grassland scattered grass and other pollutions are returned.

After completion of the operation, the second floor treatment unit 68 is released from the holding device 46 of the vehicle 10. The first soil working unit 50 is fixed. At this, the second tilling unit 68 is fixed. On the return trip, the second tilling unit 68 is transported by the first tilling unit 50. As a result of the solution according to the invention, the first soil cultivation unit 50 also has a transport function for the second soil cultivation unit 68. This results in a time-optimized use. The routes to a place can be minimized. It can bring a plurality of tillage units by a ride to the appropriate location.

List of reference numbers vehicle

chassis

Front part

Back part

pivot bearing

front facility

rear facility

swivel axis

front cabin

Front Windscreen

side door

front

Front headlamp system

ground

container means

suction

suction tube

Front end

holder

Tillage unit

hitch

First tillage unit

First fixing device

holding body

Tool

role

Front end

bottom

top

Second fixing device Second tillage unit

pillar

First receiving element

Second receiving element

a First swivel axis

b Second pivot axis

Height extension axis

wall

bearing surface

partition

holding area

pivot bearing

First pivot position

horizontal

acute angle

Second pivot position

wall

0 wall surface

2 contact element

4 contact surface

6 locking device

8 spring device

8 'spring device

0a First spring

0b Second spring

2 linkage

4a First articulation point

4b Second pivot point

6 Further transverse wall

8 direction

0 limiting element

2 dipping pen

4 Immersion pen immersion port device 126 immersion opening

128 First boundary plane

130 Second boundary plane

132 Front end

134 direction

136 First bracket

138 Second bracket

140 fixing element

142 Lift-off protection

144 holding body

146a First sweeping brush

146b Second sweeping brush

148a drive motor

148b drive motor

150 Third fixing device

152 Fourth fixation device

154 fork element

156 middle bridge

158a crossbar

158b crossbar

160a First immersion opening

160b Second immersion opening

162 gap

164 holders

166 tool

168 Linear flexible element

170 light cone

172 spray nozzle

174 bristle

Claims

Patent claims

Attachment device for a vehicle (10), with a first soil processing unit (50), comprising a holding body (54), at least one tool (56), which is arranged on the holding body (50), and a first fixing device (52), which is attached to the holding body (54) is arranged and via which the first tillage unit (50) can be detachably fixed to the vehicle (10), characterized in that the first tillage unit (50) has a second fixing device (66) on which a second tillage unit ( 68) can be releasably fixed, wherein the second tillage unit (68) can be transported by the vehicle (10) by means of the first tillage unit (50).

Attachment device according to claim 1, characterized in that the second fixing device (66) is arranged on the holding body (54) or the first fixing device (52).

Attachment device according to claim 1 or 2, characterized in that the second tillage unit (68) has a third fixing device (150), by means of which the second tillage unit (68) can be detachably fixed to the vehicle (10).

Attachment device according to one of the preceding claims, characterized in that the at least one tool (56) of the first soil cultivation unit (50) is a mowing tool.

Cultivation device according to one of the preceding claims, characterized in that the second tillage unit (68) has a fourth fixing device (152), by means of which the second tillage unit (68) can be fixed to the second fixation device (66) of the first tillage unit (50).

6. Attachment device according to one of the preceding claims, characterized in that the second soil processing unit (68) has a holding body (144) on which at least one tool (146a, 146b) is arranged.

7. Attachment device according to claim 6, characterized in that the at least one tool of the second soil processing unit (68) is a cleaning tool and in particular a sweeping tool (146a; 146b).

8. Attachment device according to claim 6 or 7, characterized in that a third fixing device (150) and / or a fourth fixing device (152) are arranged on the holding body (144) of the second soil processing unit (68).

9. Attachment device according to one of the preceding claims, characterized in that the holding body (54) of the first soil processing unit (50) has an underside (62) which faces a soil (36) to be worked when the attachment device is fixed to the vehicle (10). , and has an upper side (64) facing away from the underside (62), a fixing region of the second fixing device (66) being positioned on or above the upper side (64).

10. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) has a support area with a support surface (82) on which a counter area of the second soil processing unit (68) can be placed, in particular the support surface (82). The first tillage unit (50) fixed to the vehicle (10) is oriented horizontally or at an acute angle (94) of at most 30° to the horizontal (92) with respect to the direction of gravity (g).

11. Attachment device according to claim 10, characterized in that at least one holder (136; 138) for a hose is arranged on a transverse wall (84) to the support surface (82).

12. Attachment device according to claim 11, characterized in that at least one holder (136) for a water hose and / or at least one holder (138) and in particular a holding hole for a hydraulic hose is arranged on the transverse wall (84).

13. Attachment device according to one of claims 10 to 12, characterized in that at least one limiting element (120) is arranged on a wall (80) which forms the support surface (82), which has a blocking surface transverse to the support surface (82). .

14. Attachment device according to claim 13, characterized in that the at least one limiting element (120) limits the support area to one side and is designed as a centering aid when inserting the second tillage unit (68).

15. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) of the first tillage unit (50) and an associated fourth fixation device (152) of the second tillage unit (68) have an immersion pin immersion opening device (124), with at least one immersion pin (122) and an associated immersion opening (126).

16. Attachment device according to claim 15, characterized in that when an immersion pin (122) is immersed in an immersion opening (126), transverse mobility, in particular transverse to the direction of gravity (g), of the second tillage unit (68) to the first tillage unit (50) is blocked .

17. Attachment device according to claim 15 or 16, characterized by at least two spaced immersion pins (122).

18. Attachment device according to one of claims 15 to 17, characterized in that the at least one immersion pin (122) has a first boundary plane (128) and a second boundary plane (130), the second boundary plane (130) being parallel to the first boundary plane ( 128).

19. Attachment device according to one of claims 15 to 18, characterized in that the at least one immersion pin (122) has a width (B) that widens from a front end (132).

20. Attachment device according to one of claims 15 to 19, characterized in that the at least one immersion pin (122) is rounded at least in the region of a front end (132) and in particular has a circular boundary.

21. Attachment device according to one of claims 15 to 20, characterized in that the at least one immersion opening (126) is circular.

22. Attachment device according to one of claims 15 to 21, characterized in that the at least one immersion pin (122) is arranged on the second fixing device (66) and the associated immersion opening (126) is arranged on the fourth fixing device (152).

23. Attachment device according to one of claims 15 to 22, characterized in that the at least one immersion pin (122) is arranged on a transverse wall (84) to a support surface (82) for a counter region of the fourth fixing device (152).

24. Attachment device according to one of the preceding claims, characterized by a lifting protection (142) for the second tillage unit (68) against lifting off from the first tillage unit (50).

25. Attachment device according to claim 24, characterized in that the lift-off protection (142) comprises at least one linearly flexible element (168) which is fixed or can be fixed on the second tillage unit (68) and the first tillage unit (50).

26. Attachment device according to claim 24 or 25, characterized in that the lift-off protection (142) comprises at least one fixing element (140), which is arranged on the second fixing device (66) and on which a linearly flexible element (168), which is on the second Soil cultivation unit (68) is arranged, can be releasably fixed.

27. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) has at least one receiving element (72; 74) for the second tillage unit (68), which is pivotally arranged on the first tillage unit (50).

28. Attachment device according to claim 27, characterized in that a pivot axis (76a; 76b) is oriented at least approximately parallel to a support surface (82) of the second fixing device (66) for a fourth fixing device (152) on the second soil processing unit (68).

29. Attachment device according to claim 27 or 28, characterized by a first pivot position (90) of the at least one receiving element (72; 74), in which the second tillage unit (68) can be fixed to the first tillage unit (50), and a second pivot position ( 96) of the at least one receiving element (72; 74), in which the at least one receiving element (72; 74) is in a protective position.

30. Attachment device according to claim 29, characterized in that in the second pivoting position (96) a transverse wall (84) of the at least one receiving element (72; 74) is at least approximately parallel to an upper side (64) of the holding body (54) of the first soil processing unit ( 50) is oriented and/or a wall (80) of the at least one receiving element (72; 74) with a support surface (82) for the second tillage unit (68) transversely and in particular at least approximately perpendicular to the holding body (54) of the first tillage unit ( 68) is positioned.

31. Attachment device according to claim 29 or 30, characterized by a locking device (106) for securing the first pivot position (90) and / or the second pivot position (96).

32. Attachment device according to claim 31, characterized in that the locking device (106) comprises a spring device (108, 108 ').

33. Attachment device according to one of claims 27 to 32, characterized by a first receiving element (72) and a spaced-apart second receiving element (74), the first receiving element (72) and the second receiving element (74) having opposite pivoting directions during a transition from a first Have pivot position (90) into a second pivot position (96).

34. Attachment device according to one of the preceding claims, characterized in that a holder (164) for a further tool (166) is arranged on the second fixing device (66) and in particular a holder for a mulching insert is arranged.

35. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) is releasably fixed to the holding body (54).

36. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) is arranged on the first tillage unit (50) in such a way that it does not hinder a tillage process by means of the first tillage unit (50).

37. Attachment device according to one of the preceding claims, characterized in that the second fixing device (66) and an associated fourth fixing device (152) of the second tillage unit (68) are designed such that when the second tillage unit (50) is fixed to the first tillage unit (50) 68) a tool (146a, 146b, 172) of the second tillage unit (68) does not touch the first tillage unit (50).

38. Vehicle and in particular cleaning vehicle on which a

Attachment device (49) according to one of the preceding claims is releasably fixed.

39. Vehicle according to claim 38, characterized in that the attachment device (49) is positioned on a front (32) of the vehicle (10).

40. Vehicle according to claim 39, characterized by a (headlight device 34), wherein the second tillage device (68) is arranged on the first tillage device (50) in such a way that a light cone (170) of the headlight device (34) is not shaded.

41. Vehicle according to one of claims 38 to 40, characterized by a front cabin (26).

42. Vehicle according to claim 41, characterized in that a container device (38) is arranged behind the front cabin (26).