EP4012102B1 - Rear tiller for a snow groomer - Google Patents

Description

The invention relates to a rear cutter for a snow groomer according to the preamble of claim 1. The invention also relates to a snow groomer with such a rear cutter.

From the DE 100 45 346 A1 A rear cutter for a snow groomer is known in which two side finishers can be controlled via hydraulic cylinders.

Another rear cutter for a snow groomer is from the DE 10 2008 011 484 A1 known. The rear tiller has two side finishers, which are mounted so that they can pivot relative to an attachment frame. In order to increase the contact pressure of the side finisher on the snow surface, each side finisher is assigned a control means in the form of a helical tension spring, which exerts a torque on a support arm of the side finisher, so that each side finisher is pressed against the snow surface with increased force in addition to its own weight.

A variety of different rear cutters for snow groomers are currently known. For example, the reveals DE 10 2013 204 723 A1 a milling shaft for a rear milling machine with a snow groomer for snow surface design with a plurality of milling teeth distributed over an outer casing of the milling shaft, each of which includes a tooth head and two support webs, by means of which each tooth head is supported on the outer casing, the support webs of each milling tooth in the circumferential direction of the milling shaft are attached to the outer jacket at a distance from one another. Furthermore, the reveals DE 10 2009 060 481 B4 a rear cutter for a snow groomer for designing and maintaining snow slopes with a driven working shaft arrangement which is rotatably mounted in a processing housing that is open towards the ground.

The object of the invention is to create a rear cutter for a snow groomer of the type mentioned at the outset, which has stable operating behavior and at the same time low failures.

This task is achieved by a rear cutter for a snow groomer according to claim 1. The rear cutter for a snow groomer for snow piste design and maintenance has a support structure and a milling box held on the support structure and open to a snow piste and a driven working shaft arrangement which is rotatably mounted in the milling box. Furthermore, the rear milling machine has at least one adjustment unit, which is arranged on the milling box, and a side finishing unit. In addition, the adjustment unit is set up to adjust the position of the side finisher unit relative to the milling box while the machine is moving Adjust the snow groomer. The rear tiller therefore has an adjustable side finisher unit on opposite sides.

An advantage of this embodiment can be that the side finisher unit is mechanically decoupled from the milling box or the support structure using the adjustment unit, so that it can be ensured that the side finisher unit always rests on the snow slope. This means that passive contour guidance can be achieved by the finishers of the side finisher unit. Furthermore, the decoupling of the side finisher unit from the milling box can be used so that when the milling depth of the rear milling machine changes, the side finisher unit still lies optimally on the snow slope. In addition, the advantage can be achieved that when the snow groomer is traveling uphill or downhill, the adjustment unit can ensure that the side finisher units always lie as flat as possible on the snow slope. A rear cutter for a snow groomer can in particular be an attachment which can be attached to a rear equipment carrier of the snow groomer, a platform of the snow groomer and/or a corresponding attachment to the snow groomer by means of a rear carrier arrangement. In addition, the rear tiller has a supporting structure. The support structure can be, for example, a cross member or the like, which is provided with a connection unit which is designed to be attached to a snow groomer. The support structure can be, for example, a tubular body or a T-beam or something similar. Furthermore, the rear tiller includes a milling box, which is fixed to the support structure. The milling box has at least one opening, which lies in the direction of the snow slope. A driven working shaft arrangement is rotatably mounted in the milling box. The working shaft arrangement can be, for example, a milling machine which consists of one or more shafts. A drive of the working shaft arrangement can be coupled to a particularly hydraulic drive system of the snow groomer. The rear tiller preferably has a separate drive unit which allows the driven working shaft arrangement to rotate. The rear milling machine also has an adjustment unit which is arranged on the milling box. The adjustment unit can in particular be connected to the milling box with a detachable and/or non-detachable connection. The adjustment unit can be mounted directly on the milling box or can be assigned to the milling box indirectly via an attachment to the support structure. The rear tiller also has a side finisher unit. The side finisher unit can be a single functional component or a plurality of functional components, which are set up to create a flat transition to already prepared sections of the slopes, to form a support surface on the slope and thus a vertical guide for the milling machine, or a side snow outlet, for example through the chains of the snow groomer or by the snow groomer itself. Furthermore, the page finisher unit can be fixed or arranged on the adjustment unit by means of a detachable and/or non-detachable connection. The adjustment unit is set up to orient and/or position a position of the side finisher unit relative to the milling box, relative to the support structure and/or relative to the snow groomer while the snow groomer is traveling. The adjustment unit thus guides the side finisher unit, in particular independently of a position of the milling box or the rear milling machine, in such a way that the side finisher unit is always arranged or lies flat or parallel to the snow slope.

According to the invention, the rear milling machine is set up to set a milling depth of the driven working shaft arrangement, the adjustment unit being set up to adjust the position of the side finishing unit relative to the milling box depending on the milling depth of the driven working shaft arrangement.

An advantage of this embodiment can be that when the milling depth is changed, the side finisher units do not have to be detached from the milling box and attached to the milling box with a new angle, since the adjustment unit can be used to change the milling depth dynamically and/or flexibly even while driving can be. The adjustment unit can be set up to adjust, position and/or fix the position of the side finisher unit relative to the milling box and/or relative to the snow groomer depending on the milling depth of the driven working shaft arrangement and/or the rear milling machine. Furthermore, an actuator can form a predetermined force on the side finisher unit depending on the milling depth, so that the force can be adjusted based on the milling depth of the working shaft arrangement.

In an embodiment of the invention, the adjustment unit has at least one actuator, which is set up to form a predetermined force on the side finisher unit, so that the side finisher unit follows a slope contour.

An advantage of this embodiment can be that a force on the page finisher unit can be specifically adjusted using the actuator, so that a contact pressure and thus also a slip or friction resistance can be specifically adjusted. The predetermined force can be adjusted while driving using the actuator, so that the predetermined force can be adapted to the driving situation or the snow slope. This can be done, for example, using a hydraulic actuator. Furthermore, the predetermined force can have a fixed value, such as a spring constant. The actuator can have a first suspension point, which is on the adjustment unit and/or on is arranged in the milling box and has a second suspension point which is attached to the side finisher unit and/or the adjustment unit. The actuator can form the predetermined force between the milling box and the adjustment unit, and/or between the adjustment unit and the side finisher, so that in both options the actuator can form the predetermined force on the side finisher either directly or indirectly via the adjustment unit.

In a further embodiment of the invention, the adjustment unit has a deflector which is fixed to the milling box and the adjustment unit, the actuator being connected to the deflector and the milling box, so that the actuator forms the predetermined force on the side finisher unit by means of the deflector.

An advantage of this embodiment can be that the actuator has to generate a lower force by means of the deflector, since the leverage created by the deflector does not require the same force as without the deflector, which leads to less wear and thus higher wear lifespan can lead. Furthermore, a wider corridor of forces can be set because the actuator can be adjusted more finely using the deflector. The deflector can be, for example, a cross member or the like, which has a first deflection point that is attached to the milling box. Furthermore, the diverter can have a second deflection point, which is fixed on the adjustment unit. In addition, the deflector can have a third locking point at which the actuator is fixed. The actuator is fixed to or connected to the deflector and the milling box. By means of the connection between the actuator with the deflector and the milling box, the actuator can generate the predetermined force on the side finisher. Alternatively or additionally, the side finisher is firmly connected to the adjustment unit and a force can be formed on the adjustment unit using the deflector, so that the predetermined force can also be formed on the side finisher unit using the deflector.

In a further embodiment of the invention, the actuator is a mechanical, hydraulic, electrical and/or pneumatic actuator. An advantage of this embodiment is that depending on a rear tiller configuration, such as a single-shaft and double-shaft configuration, an actuator can be adapted to the corresponding configuration, so that the actuator is selected depending on the overall width of the rear tiller. Furthermore, the actuator can be described in such a way that a mechanical, hydraulic, electrical, pneumatic and/or a combination of the aforementioned Principles a predetermined force can be formed. The term “actuator” is to be understood broadly.

In a further embodiment of the invention, the rear tiller has a second adjustment unit, which is arranged opposite the adjustment unit on the milling box, and a second side finisher unit, which is arranged on the second adjustment unit, the adjustment unit and the second adjustment unit determining the respective position of the side finisher units independently of one another set.

An advantage of this embodiment can be that the driving dynamics of a snow groomer to which the rear cutter is attached can be improved by means of the mutually independent side finisher units, since the individual adjustability of the position of the side finisher units can prevent the snow groomer from tilting if the surface is uneven. The adjustment unit can be arranged on one side of the milling box and a second adjustment unit can be arranged on the milling box opposite the first adjustment unit. The adjustment units are arranged in particular opposite each other orthogonally to the direction of travel of the snow groomer. The second adjustment unit can be arranged on the milling box by means of a detachable or non-detachable connection. The second page finisher unit can also be fixed to the second adjustment unit by means of a detachable or non-detachable connection. Alternatively and/or additionally, the movement or position of the two adjustment units can also be synchronized using a corresponding actuator.

In a further embodiment of the invention, the page finisher unit has at least one page finisher element and/or an intermediate finisher element.

An advantage of this embodiment can be that with the help of the side finisher element and/or the intermediate finisher element, the side finisher unit can be adapted to a configuration of the rear tiller and/or the snow groomer in order to achieve an increase in the quality of the snow slope design and/or maintenance. The intermediate finisher element can be arranged directly on the adjustment unit and/or the milling box. Furthermore, the side finisher element can be arranged on the adjustment unit in a fixed and/or rotatable or pivotable manner. The side finisher element can be folded out and folded in between a parking position and/or an operating position, particularly if it is rotatably or pivotably arranged on the adjustment unit. Alternatively and/or additionally, an angle of attack between the axis of rotation of the working shaft arrangement and/or the Side surface of the milling box and the main extension direction of the side finisher element can be adjusted in particular by means of a side actuator.

In a further embodiment of the invention, the rear milling machine has a side actuator, which is connected to the milling box and the side finisher element, so that an angle of attack of the side finisher element to the milling box can be adjusted by means of the side actuator.

An advantage of this embodiment can be that the side finisher element can be moved into an operating and a rest state using the side actuator, so that, for example, the rear tiller requires less space when storing or similar. Another advantage can be that the position of the side finisher element can be adjusted depending on the current position of the rear tiller using the side actuator in order to achieve an increase in the quality of the snow slope. The side actuator can have a first suspension point, which is attached to the milling box and/or the support structure. Furthermore, the page actuator can have a second suspension point, which is arranged on the page finisher unit and/or on the page finisher element. The side actuator can be a mechanical, hydraulic, electrical and/or pneumatic actuator.

In a further embodiment of the invention, the adjustment unit has a holding plate which is displaceably arranged on the milling box, with the side finishing unit being attached to the holding plate.

An advantage of this embodiment can be that with the help of the holding plate and its displacement, the position of the side finisher unit can be optimized with regard to the quality of snow slope design and maintenance. The term “displaceable” can be understood to mean any movement of the holding plate in relation to the milling box, which in particular follows a predefined path. This is achieved in particular by defining a predefined corridor of movements between the adjustment unit and the milling box using the holding plate. This can be achieved, for example, by predefined the parameters of the displacement of the adjustment unit using an elongated hole or another similar recess. The holding plate can in particular be a sheet metal or a sheet made of a metal, metal composite, aluminum and/or composite material, which can be arranged parallel to the side surface of the milling box.

In a further embodiment of the invention, the holding plate has at least one recess, which is designed to guide the holding plate along a predetermined path.

An advantage of this embodiment can be that, with the help of the predetermined path of the recess, malfunctions of the rear tiller and/or the snow groomer can be avoided and thus the operating time or operating effectiveness can be increased. The recess can in particular be an elongated hole or a similar contour, which is suitable for guiding the holding plate in a predefined path to the adjustment unit. In an exemplary embodiment, the milling box has a link bolt on its side surface, wherein the recess in the holding plate of the adjustment unit can be positioned on the link bolt. Furthermore, the retaining plate can be fixed on the link bolt using a nut or something similar.

In a further embodiment of the invention, the holding plate has a second recess which is designed to guide the holding plate along a second predetermined path, the predetermined path and the second predetermined path being arranged parallel, concentric and/or symmetrical to one another.

An advantage of this embodiment can be that, with the help of the targeted parallel, concentric and/or symmetrical arrangement of the two tracks relative to one another, tilting of the holding plate relative to the milling box can be avoided and thus disruptions in the operation of the rear milling machine can be avoided. In addition, the connecting elements that attach the holding plate to the milling box can reduce the load and wear of each connecting element by doubling them. Furthermore, the predetermined track and the second predetermined track can be arranged, positioned and/or provided parallel, concentric and/or symmetrical to one another. Thus, rotation or displacement of the holding plate to the milling box can be improved, since the second predetermined path blocks a degree of freedom in the displacement and thus the holding plate can only move along one direction of displacement to the milling box.

In a further embodiment of the invention, the adjustment unit has at least one lever which is attached to the milling box and the holding plate, so that the lever guides the holding plate relative to the milling box.

An advantage of this embodiment can be that the lever defines a maximum or minimum position of the displacement between the holding plate and the milling box can be. Furthermore, by means of the lever, a force that acts on the holding plate can be better transmitted to the milling box and vice versa. The lever can have a first suspension point, which is attached to the milling box. Furthermore, the lever can have a second suspension point, which is attached to the holding plate of the adjustment unit.

A further aspect of the invention is a snow groomer which has a rear tiller, as described above and below.

An advantage of the snow groomer, which has a rear cutter, as described above and below, is that the driving dynamics of the snow groomer can be improved and the quality of the slope preparation can be increased by means of the rear cutter and the adjustable side finisher units.

Fig. 1

zeigt eine Rückansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen Heckfräse für eine Pistenraupe,

Fig. 2

die Heckfräse gemäß Fig. 1 in einer Frontansicht,

Fig. 3

eine schematische Darstellung einer Heckfräse gemäß einer weiteren bevorzugten Ausführungsform der Erfindung,

Fig. 4

eine schematische Darstellung einer Heckfräse gemäß einer weiteren bevorzugten Ausführungsform der Erfindung,

Fig. 5

in vergrößerter perspektivischer Darstellung einen Teilbereich der Heckfräse nach den Fig. 1 und 2,

Fig. 6

in einer Seitenansicht einen Teilbereich einer Heckfräse nach den Fig. 1, 2 und 5,

Fig. 7

die Heckfräse nach Fig. 6 in veränderter Funktionsstellung,

Fig. 8

die Heckfräse nach den Fig. 6 und 7 in einer weiteren Funktionsstellung,

Fig. 9

die Heckfräse nach fig. 8 in anderer Funktionsstellung,

Fig. 10

die Heckfräse nach Fig. 9 in anderer Funktionsstellung,

Fig. 11

die Heckfräse nach Fig. 10 in anderer Funktionsstellung,

Fig. 12

perspektivisch einen Teilbereich der Heckfräse ähnlich Fig. 5,

Fig. 13

eine Seitenansicht der Heckfräse gemäß Fig. 12,

Fig. 14

zeigt ein Flussdiagramm zur Illustration von Schritten gemäß eines Verfahrens zur Montage einer Heckfräse,

Fig. 15

zeigt eine schematische Darstellung einer Pistenraupe gemäß einer weiteren bevorzugten Ausführungsform der Erfindung.

Further advantages and aspects of the invention result from the claims and from the description of exemplary embodiments of the invention, which are explained below with reference to the figures. Show:

Fig. 1

shows a rear view of a preferred embodiment of a rear cutter according to the invention for a snow groomer,

Fig. 2

the rear tiller accordingly Fig. 1 in a front view,

Fig. 3

a schematic representation of a rear tiller according to a further preferred embodiment of the invention,

Fig. 4

a schematic representation of a rear tiller according to a further preferred embodiment of the invention,

Fig. 5

an enlarged perspective view of a section of the rear tiller according to the Fig. 1 and 2 ,

Fig. 6

in a side view of a section of a rear tiller Fig. 1, 2 and 5 ,

Fig. 7

the rear tiller Fig. 6 in a changed functional position,

Fig. 8

the rear tiller according to the Figs. 6 and 7 in another functional position,

Fig. 9

the rear tiller fig. 8th in a different functional position,

Fig. 10

the rear tiller Fig. 9 in a different functional position,

Fig. 11

the rear tiller Fig. 10 in a different functional position,

Fig. 12

perspectively a part of the rear tiller similar Fig. 5 ,

Fig. 13

a side view of the rear tiller according to Fig. 12 ,

Fig. 14

shows a flowchart illustrating steps according to a method for assembling a rear tiller,

Fig. 15

shows a schematic representation of a snow groomer according to a further preferred embodiment of the invention.

Fig. 1 shows a rear tiller 1, in particular a rear view of a rear tiller 1, which has a milling box 2. A driven working shaft arrangement 4 is rotatably mounted in the milling box 2. An adjustment unit 6 is arranged on the milling box 2. A page finisher unit 8 is attached to the adjustment unit 6. In addition, a second adjustment unit 14 is attached to the milling box 2. In addition, a second page finisher unit 16 is arranged on the second adjustment unit 14. Furthermore, the rear tiller 1 has a support structure 46 on which the milling box 2 is arranged.

An advantage of this embodiment can be that, with the help of the adjustment unit 6, the side finisher unit 8 is mechanically decoupled from the milling box 2 or from the support structure 46, so that it can be ensured that the side finisher unit 8 always rests on the roadway 54.

Fig. 2 shows a rear milling machine 1 with a supporting structure 46. A splash guard 48 can be arranged on the supporting structure 46 and/or the milling box 2. Furthermore, a large number of splash guards 48 can also be arranged on the support structure 46. Furthermore, a driven working shaft arrangement 4 with one or more working shafts can be arranged in the milling box 2. The driven working shaft arrangement 4 can also be divided into different segments.

Fig. 3 shows a schematic representation of the rear tiller 1. The rear tiller 1 has a milling box 2. The driven working shaft arrangement 4 is rotatably mounted in the milling box 2. An adjustment unit 6 is attached to the milling box 2, on which the side finisher unit 8 is arranged. Furthermore, the rear tiller 1 has a second adjustment unit 14 and a second side finisher unit 16, which are connected to one another. The second adjustment unit 14 can be arranged in the milling box 2.

Fig. 4 shows a schematic representation of the rear tiller 1. The rear tiller 1 has a milling box 2. The milling box 2 can be connected to the side finisher unit 8 by means of a deflector 12 and an actuator 10. The deflector 12 and the actuator 10 thus form the adjustment unit 6. The deflector 12 can have a first attachment point, which is fixed to the milling box 2. Furthermore, the deflector 12 can have a second attachment point, which is fixed to the page finisher unit 8. In addition, the actuator 10 can have a first fixing point, which is arranged on the milling box 2. Furthermore, the actuator 10 can have a second fixing point, which is attached to the deflector 12. With the help of the deflector 12 and the actuator 10, a predetermined force can be formed on the page finisher unit 8.

Fig. 5 shows a schematic representation of the rear tiller 1. The rear tiller 1 has a milling box 2. The adjustment unit 6 has a holding plate 26. The holding plate 26 is fastened to the milling box 2 by means of at least one connecting element 52. Furthermore, the adjustment unit 6 has an actuator 10, which is attached to the holding plate 26 and the milling box 2 and/or the support structure 46 by means of a deflector 12. Furthermore, a side finisher element 20 is rotatably attached to the holding plate 26. In addition, an intermediate finisher element 22 is arranged on the holding plate 26.

Fig. 6 shows a schematic representation of the rear tiller 1. The rear tiller 1 has an adjustment unit 6, which has a holding plate 26. A side finisher element 20 is rotatably or pivotably arranged on the holding plate 26. Furthermore, the rear milling machine 1 has a side actuator 24, which is arranged on the side finisher element 20 on the one hand and is attached to the milling box 2 and/or the support structure 46 on the other side. Thus, an angle of attack 27 of the side finisher element 20 to the holding plate 26 can be changed by means of the side actuator 24. Furthermore, the page finisher unit 8 has an intermediate finisher 22, which is arranged on the holding plate 26. An erecting force can be applied to the intermediate finisher 22 and/or the side finisher element 20 by means of the actuator 10 be set. This force can in particular be adjusted in such a way that the intermediate finisher element 22 lies as flat as possible on the roadway 54.

Fig. 7 shows a rear tiller 1, which is moved through a depression in the roadway 54. The rear milling machine 1 has an adjustment unit 6 and a side finisher unit 8. The adjustment unit 6 has a holding plate 26, which is arranged essentially parallel to a side surface of the milling box 2. Furthermore, the adjustment unit 6 has an actuator 10, which forms a predetermined force on the page finisher unit 8 by means of a deflector 12. The holding plate 26 has a recess for the deflector 50, through which a suspension point of the deflector 12 is guided through the holding plate 26. Furthermore, the rear tiller 1 travels through a depression along the roadway 54 Fig. 7 shown that despite the depression in the roadway 54, both the intermediate finisher element 22 and the side finisher element 20 lie essentially flat on the roadway 54. This is achieved by means of the adjustment unit 6, since this mechanically decouples the side finisher unit 8 from the milling box 2, so that the side finisher unit 8 can adapt to a contour of the roadway 54. Likewise, the position of the side finisher element 20 is adapted to the contour of the roadway 54 by means of the adjustment unit 6.

Fig. 8 shows a schematic representation of the rear tiller 1, which drives along the road 54 along a hill. Here, the position of the side finisher unit 8 on the roadway 54 can be as flat as possible by means of the adjustment unit 6. The rear tiller 1 has an adjustment unit 6 with a holding plate 26. The holding plate 26 has a first recess 28 and a second recess 42. The first recess 28 forms a path 30 along which a connecting element 52 can be guided. Likewise, the second recess 42 forms a second path 44 in that a connecting element 52 can be guided along the path 44. Furthermore, the first track 30 and the second track 44 can be parallel, concentric, as in Figure 8 shown, and / or be arranged symmetrically to one another, in particular in such a way that a movement of the adjustment unit 6 to the milling box 2 takes place along a degree of freedom. In addition, the holding plate 26 can be attached to the milling box 2 by means of a lever 32.

Fig. 9 shows a schematic representation of the rear tiller 1. The rear tiller 1 has an adjustment unit 6 and a side finisher unit 8. The side finisher unit 8 consists of an intermediate finisher element 22 and a side finisher element 20, both of which are attached to the adjustment unit 6. Furthermore, the rear tiller 1 has a milling box 2 in which a driven working shaft arrangement 4 is rotatably mounted. At the driven working shaft arrangement 4 is in particular a milling body or a milling machine. The driven working shaft arrangement dips into the plane of the roadway 54, so that a milling depth 18 is created, in which the driven working shaft arrangement 4 dips into the roadway 54. The position of the side finisher unit 8 can be adjusted to the milling depth 18 by means of the adjustment unit 6. This is particularly true in the Figures 10 and 11 explained in detail.

Fig. 10 shows a rear milling machine 1 with an adjustment unit 6 and a side finisher unit 8. Furthermore, the driven working shaft arrangement 4 dips into the road 54, so that a milling depth 18 is created. The milling depth 18 is compared to Fig. 9 chosen higher. Despite the increased milling depth 18, the intermediate finisher element 22 and the side finisher element 20 rest optimally on the roadway 54, since the position of the side finisher unit 8 can be adjusted in a targeted manner using the adjustment unit 6. Furthermore, a contact pressure or an erection force of the side finisher unit 8 can be specifically adjusted by means of the actuator 10, regardless of a milling depth 18.

Fig. 11 shows another schematic representation of the rear tiller 1. In comparison to Fig. 10 the driven working shaft arrangement 4 dips even further into the roadway 54, so that an increased milling depth 18 is represented. Despite the increased milling depth 18, the intermediate finisher element 22 and the side finisher element 20 of the side finisher unit 8 rest optimally on the roadway 54. This can be achieved in particular by means of an actuator 10 of the adjustment unit 6.

Fig. 12 shows a schematic representation of the rear tiller 1. The rear tiller 1 has an adjustment unit 6. The adjustment unit 6 has an actuator 10 and a deflector 12, which are arranged on a holding plate 26. The holding plate 26 has a first recess 28 and a second recess 42, in which connecting elements 52 are arranged, which serve to guide the holding plate 26 to the milling box 2. Furthermore, the connecting elements 52 can also be arranged on a support structure 46. In addition, a splash guard 48 can be attached to the support structure 46. In addition, the actuator 10 and the side actuator 24 can also be attached to the support structure 46. The holding plate 26 can also be attached to the milling box 2 and/or the support structure 46 by means of a lever 32. The side actuator 24 can set an angle of attack 27 between the side finisher element 20 and the holding plate 26 or the milling box 2. Furthermore, an intermediate finisher element 22 can be attached to the holding plate 26. By means of the side actuator 26, the side finisher unit 8 can be displaced between an operating position and a rest position.

Fig. 13 shows a schematic representation of the rear tiller 1. The rear tiller 1 can have a support structure 46. The adjustment unit 6 can be attached to the milling box 2 and/or to the support structure 46. The adjustment unit 6 can have a holding plate 26, which has a first recess 28 and a second recess 42, which are set up to guide the holding plate 26 along a predetermined path 30. Furthermore, the side finisher element 20 can be moved along an angle of attack 27 by means of a side actuator 26, which is attached to the support structure 46 and/or the milling box 2.

Fig. 14 shows a flowchart illustrating steps of the method 40 for producing a rear tiller 1, as described above and below. The method 40 can include the step of mounting S1 on the page finisher unit 8 on an adjustment unit 6. Furthermore, the method 40 can include the step S2 of attaching the adjustment unit 6 to a milling box 2 of the rear-mounted snow groomer 1, so that the adjustment unit 6 adjusts a position of the side finisher unit 8 relative to the milling box 2 while a snow groomer 34 is traveling.

Fig. 15 shows a schematic representation of a snow groomer 34. The snow groomer 34 can have a rear equipment carrier 36, to which the rear tiller 1 can be fixed by means of a fastening unit 38.

Furthermore, it should be noted that the term unit is also to be understood broadly in this case and includes both a one-part design and a multi-part design of the respective units, whereby the respective parts of a unit do not have to be provided at one position of the rear tiller, but also distributed on the rear tiller.

In addition, it should be noted that "comprising" and "having" do not exclude other elements and the indefinite articles "a" or "an" do not exclude a plurality. Furthermore, it should be noted that features that have been described with reference to one of the above exemplary embodiments can also be used in combination with other features of other exemplary embodiments described above. Reference symbols in the claims are not to be regarded as limitations.

Claims (12)

1. A rear-mounted tiller (1) for a snow groomer (34) for snow surface preparation and grooming, with a carrier structure (46) and with a tiller box (2) mounted on the carrier structure and open towards a snow piste, and with a driven work shaft arrangement (4) which is rotatably mounted in the tiller box (2), wherein the rear-mounted tiller (1) has at least one adjustment unit (6), which is arranged on the tiller box (2), and one side finisher unit (8), wherein the adjustment unit (6) is configured to set a position of the side finisher unit (8) relative to the tiller box (2) during movement of the snow groomer (34), and wherein the rear-mounted tiller (1) is configured to set a tilling depth (18) of the driven work shaft arrangement (4), characterized in that the adjustment unit (6) is configured to set the position of the side finisher unit (8) relative to the tiller box (2) and dependent on the set tilling depth (18) of the driven work shaft arrangement (4).
2. The rear-mounted tiller according to claim 1, characterized in that the adjustment unit (6) has at least one actuator (10) which is configured to exert a predetermined force onto the side finisher unit (8) such that said side finisher unit (8) follows a piste contour.
3. The rear-mounted tiller according to claim 2, characterized in that the adjustment unit (6) has a diverting lever (12) which is fastened on the tiller box (2) and the adjustment unit (6), wherein the actuator (10) is connected to the diverting lever (12) and to the tiller box (2) such that the actuator (10) exerts the predetermined force onto the side finisher unit (8) by means of the diverting lever (12).
4. The rear-mounted tiller according to one of claims 2 to 3, characterized in that the actuator (10) is a mechanical, hydraulic, electric and/or pneumatic actuator (10).
5. The rear-mounted tiller according to any of the previous claims, characterized in that the rear-mounted tiller (1) has a second adjustment unit (14) which is arranged on the tiller box (2) opposite the adjustment unit (6) and a second side finisher unit (16), which is arranged on the second adjustment unit (14), wherein the adjustment unit (6) and the second adjustment unit (14) set the respective positions of the side finisher units (8, 16) independently of one another.
6. The rear-mounted tiller according to any of the previous claims, characterized in that the side finisher unit (8) has at least one side finisher element (20) and/or one intermediate finisher element (22).
7. The rear-mounted tiller according to claim 6, characterized in that the rear-mounted tiller (1) has a side actuator (24) which is connected to the tiller box (2) and to the side finisher element (20) such that an angle of attack (27) of the side finisher element (20) relative to the tiller box (2) is settable by means of the side actuator (24).
8. The rear-mounted tiller according to any of the previous claims, characterized in that the adjustment unit (6) has a mounting plate (26) which is displaceably arranged on the tiller box (2), wherein the side finisher unit (8) is fastened to the mounting plate (26).
9. The rear-mounted tiller according to claim 8, characterized in that the mounting plate (26) has at least one recess (28) which is configured to guide the mounting plate (26) along a predetermined path (30).
10. The rear-mounted tiller according to claim 9, characterized in that the mounting plate (26) has a second recess (42) which is configured to guide the mounting plate (26) along a second predetermined path (44), wherein the predetermined path (30) and the second predetermined path (44) are arranged parallel, concentric and/or symmetrical to one another.
11. The rear-mounted tiller according to one of claims 8 to 10, characterized in that the adjustment unit (6) has at least one lever (32) which is fastened to the tiller box (2) and to the mounting plate (26) such that the lever (32) guides the mounting plate (26) relative to the tiller box (2).
12. A snow groomer (34) having a rear-mounted tiller (1) according to any of the previous claims.

Images