Finisher arrangement and piste processing device

Abstract

2.1 Use for preparing a snow slope in a ski resort. 2.2 A finisher arrangement for a towed slope grooming machine, which consists at least partially of elastically compliant material and which is provided on its underside facing a slope surface with profiles arranged in a profiled area of ​​the underside and which, during towing operation, imprint a profile pattern into the slope surface, wherein the profiles are distributed across a width of the finisher arrangement transversely to the towing direction, is known. 2.3 According to the invention, it is provided that the profiles have at least one row of disruptive profile elements extending across the width of the finisher arrangement for breaking up the slope surface, wherein the row of disruptive elements is arranged in a front end section of the profiled area with respect to the towing direction.

Description

[0001] The invention relates to a finisher assembly for a towed piste grooming device, in particular a snow piste grooming device, which consists at least in sections of elastically flexible material and which is provided with profiles on its underside facing a piste surface. These profiles are arranged in a profile region of the underside and, during towing operation, introduce a profile pattern into the piste surface. The profiles are distributed across a width of the finisher assembly transversely to the towing direction. The invention also relates to a towed piste grooming device, in particular a snow piste grooming device, with such a finisher assembly and with at least one milling unit for processing the piste surface. The milling unit is arranged in front of the finisher assembly in the towing direction.

[0002] Such a piste grooming device with a corresponding finisher arrangement is known from EP 2 314 773 B1. The known finisher arrangement has profiles distributed across the width of the finisher arrangement transversely to the towing direction. The profiles are arranged in several rows along a width direction running transversely to the towing direction. In the towing direction, individual profile elements of each row of profiles are aligned with one another. The rows are of identical shape. In the known finisher arrangement, a clear cross-section related to the towing direction is identical for each row of profile elements. The known finisher arrangement is used in a piste grooming device that can be mounted on the rear of a snow groomer in order to be towed across a snow slope by the snow groomer for the mechanical treatment of a piste surface.The finisher arrangement is used to introduce a profile drawing into the piste surface.

[0003] US 5 077 919 A also shows Figur 5 und 6 a corresponding finisher arrangement with front interference elements 22f.

[0004] The object of the invention is to provide a finisher arrangement and a piste grooming device of the type mentioned above, which enable a piste surface to be driven on easily and safely.

[0005] According to a first aspect of the invention, this object is achieved for the finisher arrangement in that the profiles have at least one disruptive row of disruptive profile elements extending across the width of the finisher arrangement for breaking up the piste surface, wherein the disruptive row is arranged in a front end section of the profiling area with respect to the towing direction. Of the profiles, the disruptive profile elements are therefore the first to come into contact with the piste surface during towing operation of the finisher arrangement. The disruptive profile elements ensure that snow present on the piste surface is loosened and swirled. The snow thus loosened and swirled can then be shaped for the profile pattern by means of profile elements arranged behind the disruptive row with respect to the towing direction. The loosened snow can advantageously be shaped particularly reliably and with a true shape.This results in a particularly uniform piste surface that largely eliminates imperfections. Compared to the prior art, the invention is intended to reduce the frequency of imperfections in the profile of the piste surface. This improves the quality of the piste surface, ensuring easy and safe access for winter sports enthusiasts.

[0006] According to a further aspect of the invention, the object is achieved for the finisher arrangement in that the profiles have at least one end row of end profile elements extending across the width of the finisher arrangement, which define a final geometry of the profile drawing during towing operation, and in that the end row is arranged in a rear section of the profiling region with respect to the towing direction, and in that a clear cross-section of the profiles with respect to the towing direction is narrowed, in particular minimal, at the end row. The clear cross-section with respect to the towing direction is preferably oriented perpendicular to the towing direction. The clear cross-section is defined by intermediate spaces arranged between the profiles along the width direction of the finisher arrangement, through which intermediate spaces the snow present on the piste surface is guided along the towing direction during towing operation.By narrowing the clear cross-section at the end row, the snow guided through these gaps is compacted at the end row. Any density inhomogeneities present in the snow guided through the gaps can be at least partially compensated or eliminated by compaction. Such inhomogeneities could otherwise lead to defects in the profile. The result is a high-quality piste surface whose profile, after processing using the finisher arrangement, exhibits very few or no defects. This allows for particularly easy and safe use of the snow slope by winter sports enthusiasts.

[0007] According to a further aspect of the invention, the task for the finisher assembly is achieved in that an end contour of the finisher assembly is present on the underside behind the profiles with respect to the towing direction, and in that a clear cross-section of the end contour, related to the towing direction, increases in both width and height counter to the towing direction. Such an end contour proves to be particularly aerodynamically favorable. Accordingly, a snow flow guided through the spaces between the profiles and through the end contour during towing operation can be maintained laminar for a particularly long time. Turbulence in said snow flow can be correspondingly reduced or even completely avoided.In contrast, with the known finisher arrangement, such turbulence causes snow particles to be separated from the profile during towing, resulting in defects in the profile. Conversely, the final contour designed according to the invention allows for a profile of the piste surface to be created with particularly few defects. This ensures high-quality snow piste and, consequently, easy and safe use by winter sports enthusiasts.

[0008] Conveniently, two or all of the aforementioned aspects of the invention can be implemented in one and the same finisher assembly. The finisher assembly according to one of the aspects can thus be configured according to one or more of these aspects.

[0009] According to the invention, the interference profile elements have a conical shape in the manner of a straight cone, the tip of which is rounded.

[0010] The associated cross-section of a respective disruptive profile element, oriented vertically and perpendicular to the towing direction and perpendicular to the width direction, can thus be round, particularly circular. A disruptive profile element designed in this way generates particularly strong turbulence in the snow on the piste surface it breaks up. Accordingly, the snow can be particularly well broken up, so that particularly fine snow is available for the profiles downstream of the disruptive profile elements, running counter to the towing direction. This type of fine snow can be shaped particularly well and flawlessly into the profile pattern.

[0011] In a further embodiment of the invention, the height of the clear cross-section of the profiles at the end row, relative to the direction of travel, is minimal. Thus, the snow guided through the spaces between the profiles at the end row is compacted or compressed along the vertical direction. This results in a particularly compact piste surface that is particularly wear-resistant.

[0012] In a further embodiment of the invention, the height of the clear cross-section of the profiles on the end row, relative to the towing direction, is between 0.75 and 0.9 times greater than the height of the clear cross-section of the remaining profiles, relative to the towing direction. This allows for a particularly robust profile pattern. At the same time, it also prevents the slope surface from becoming overly compacted and thus the snow slope becoming too hard.

[0013] In a further embodiment of the invention, the height of the clear cross-section of the profiles on the end row, relative to the towing direction, is between 1.0 mm and 5 mm, preferably between 1.0 mm and 2.5 mm, most preferably approximately 1.5 mm, less than the height of the clear cross-section of the remaining profiles, relative to the towing direction. The "approximately" refers to measurement inaccuracies of ± 10% that must be taken into account. Such a reduction in the height of the clear cross-section at the end row allows, on the one hand, a particularly complete formation of the profile pattern and, on the other hand, a particularly grippy piste surface.

[0014] In a further embodiment of the invention, the profiles have at least one pre-embossing row of pre-embossing profile elements extending across the width of the finisher arrangement, wherein the pre-embossing row is arranged in a central section of the profiling area with respect to the dragging direction, which adjoins the rear end section in the dragging direction and / or to which the front end section adjoins in the dragging direction.

[0015] Using the pre-shaping row, the snow on the slope surface can be roughly shaped. The pre-shaping row can be considered a first compaction stage for creating the profile pattern. Any number of such compaction stages can be implemented by providing a corresponding number of pre-shaping rows.

[0016] In a further embodiment of the invention, the pre-stamping elements have an elongated shape extending longitudinally along the drag direction, preferably elliptical or teardrop-shaped when viewed from the underside. Such pre-stamping profile elements advantageously ensure particularly low turbulence in the area of the pre-stamping row. Accordingly, a particularly clean profile pattern can be created, i.e., one that deviates very little from the desired geometry.

[0017] In a further embodiment of the invention, the end profile elements have a rib shape extending longitudinally along the towing direction, particularly in a cigar-shaped or boat-hull-shaped configuration. End profile elements designed in this manner allow for a particularly clean shaping of the profile pattern.

[0018] In a further embodiment of the invention, the clear cross-section of the profiles on the disruptive row, relative to the direction of travel, is larger, in particular wider, than on the pre-shaped row and / or than on the final row. The clear cross-section can differ in terms of its surface area at the respective rows. The clear cross-section present at the respective rows can decrease in the opposite direction to the direction of travel, so that the snow guided through the spaces between the profiles is successively compacted.

[0019] It is advisable to arrange at least one interfering profile element and / or at least one pre-stamping element and / or at least one end profile element in a common alignment along the drag direction and at a distance from one another. This improves the clean formation of the profile pattern.

[0020] In a further embodiment of the invention, the end contour widens in a funnel-like manner, particularly in a diffuser-like manner, in the opposite direction to the towing direction. Alternatively or additionally, the end contour gradually lifts off the slope surface in the opposite direction to the towing direction. This ensures a particularly low-turbulence separation of the snow flow guided along the underside of the finisher assembly.

[0021] The final row conveniently transitions directly into the final contour, particularly without any gaps. This results in a particularly compact finisher arrangement with respect to the drag direction.

[0022] In a further embodiment of the invention, the clear cross-section of the final contour, relative to the towing direction, is larger than the clear cross-section of the profiles, relative to the towing direction. The final contour thus does not participate in the compaction of the piste surface and thus also in the formation of the profile pattern. It ensures a clean detachment of the snow compacted into the profile pattern from the finisher assembly.

[0023] In a further embodiment of the invention, the free ends of the profile elements belonging to a row are arranged at a uniform groove spacing from one another, with a length of the interfering profile elements, relative to the drag direction, corresponding to 0.7 to 1.0 times and / or the pre-embossed profile elements to 1.5 to 2.0 times and / or the profile elements to 4.0 to 8.0 times the groove spacing. This allows the profile elements to be coordinated with one another to enable clean formation of the profile pattern even at high drag speeds during drag operation of the finisher arrangement.

[0024] For the towed piste grooming device, in particular a snow piste grooming device, the object of the invention is achieved by equipping it with a finisher assembly according to the invention as described above. The above-described advantages of the finisher assembly according to the invention thus also apply to the towed piste grooming device according to the invention.

[0025] Further advantages and features of the invention emerge from the claims and from the following description of a preferred embodiment of the invention, which is illustrated with reference to the drawings.

[0026] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention. Fig. 1 shows a schematic perspective view of an embodiment of a towed piste grooming device according to the invention with a finisher arrangement designed according to the invention, Fig. 2 shows a schematic side view of a section of the finisher arrangement according to Fig. 1 , Fig. 3 the section after Fig. 2 in a schematic plan view, Fig. 4 a further section of the finisher arrangement according to Fig. 1 in a schematic representation of a section guided along a dragging direction, Fig. 5 in a schematic sectional representation related to a width direction, a further section of the finisher arrangement according to Fig. 1 , Fig. 6 in a further schematic sectional view related to the width direction, a further section of the finisher arrangement according to Fig. 1 , Fig. 7 a detail of a schematic plan view of the finisher arrangement according to Fig. 1 , Fig. 8 a detail of the illustration according to Fig. 4 .

[0027] A towed piste grooming device 100 is provided for grooming a snow slope. Accordingly, the towed piste grooming device 100 can be a snow slope grooming device 101. The piste grooming device 100 is towed by a snow groomer to groom the snow slope. For this purpose, the piste grooming device 100 can be mounted on the rear of the snow groomer. The towed piste grooming device 100 comprises a finisher assembly 1. In addition, the piste grooming device 100 comprises at least one milling unit 102 for grooming a piste surface of the snow slope. The milling unit 102 is arranged in front of the finisher assembly 1 in the towing direction S. The finisher assembly 1 serves to compact and smooth the piste surface. Before compacting and smoothing the piste surface by means of the finisher assembly 1, the piste surface can be groomed by means of the milling unit 102.The milling unit 102 can be attached to the rear of the snow groomer via a rear attachment carrier. A snow groomer with such a milling unit 102 and an associated finisher assembly 1 is used to shape and maintain ski and snowboard slopes in ski areas. The finisher assembly 1 can extend across the entire width of a corresponding milling unit 102 as well as laterally beyond the milling unit 102 along a width direction BR. An interface of the finisher assembly 1 for mounting on a carrier of the snow grooming device 100 or on the milling unit 102 can be designed in a conventional manner. Thus, the present finisher assembly 1 can be easily retrofitted to already widely used snow grooming devices.

[0028] The finisher arrangement 1 consists of a stable, but at least partially elastically flexible material. In the present case, this material is a plastic material. In the area of its upper side, the finisher arrangement 1 can have a receiving groove for receiving corresponding cross members, which can exert compressive forces on the finisher arrangement 1 from above in order to press the finisher arrangement 1 against the piste surface. Such cross members can be assigned to a milling frame of the milling unit 102 and can be hydraulically pressurized in order to generate a desired contact pressure of the finisher arrangement 1. When the finisher arrangement 1 is towed across the snow piste, an underside 2 of the finisher arrangement 1 faces the piste surface. The underside 2 is provided with profiles 3. The profiles 3 are arranged in a profile area 4 of the underside 2.During towing operation, the profiles 3 introduce a profile pattern into the slope surface. The creation of the profile patterns can be understood as an extrusion process in which snow present on the slope surface is forced along the towing direction S through a clear cross-section Q present between the profiles 3 and related to the towing direction S. The profiles 3 can be understood as an extrusion die.

[0029] The profiles 3 are distributed across a width B of the finisher arrangement 1 transversely to the towing direction S. The profiles 3 are therefore distributed along the width direction BR. The profiles 3 comprise at least one disruptive row 5 of disruptive profile elements 6, which serve to break up the runway surface. In the present case, exactly one such disruptive row 5 is present. The disruptive row 5 extends across the width B of the finisher arrangement 1. The disruptive row 5 is arranged in a front end section 4a of the profiling area 4 with respect to the towing direction S. The disruptive profile elements 6 therefore come into contact with the runway surface first compared to the other profiles 3 during the towing operation of the finisher arrangement 1.

[0030] The profiles 3 of the finisher arrangement 1 also have at least one end row 7 of end profile elements 8. In the present case, exactly one such end row 7 is present. The end row 7 extends across the width B of the finisher arrangement 1. During towing operation of the finisher arrangement 1, the end profile elements 8 define a final geometry of the profile drawing, which is introduced into the runway surface. The final geometry of the profile drawing is the shape that the profile drawing has after the runway surface has been processed by the finisher arrangement 1. The end row 7 is arranged in a rear end section 4c of the profiling area 4 with respect to the towing direction S. Accordingly, the end profile elements 8 come into contact with the runway surface last compared to the other profiles 3 during towing operation of the finisher arrangement 1. The clear cross-section Q of the profiles 3, relative to the towing direction S, is narrowed at the end row 7.For example, the clear cross-section Q is minimal at the end row 7. The clear cross-section Q is oriented perpendicular to the drag direction S. The clear cross-section Q is determined by the gaps present along the width direction BR between the profile elements 6, 8, 11 of the profiles 3. The clear cross-section Q related to the drag direction S is different for each row of profiles 3.

[0031] Furthermore, on the underside 2 of the finisher arrangement 1, an end contour 9 of the finisher arrangement 1 is present behind the profiles 3 with respect to the drag direction S. In this case, the end contour 9 is arranged behind the end row 7 of the finisher arrangement 1 with respect to the drag direction S. A clear cross-section Q of the end contour 9, related to the drag direction 1, increases in both its width b and its height h counter to the drag direction S. A free space delimited by the end contour 9 therefore widens counter to the drag direction S.

[0032] In the present case, the interfering profile elements 6 have a conical shape. The interfering profile elements 6 are designed in the manner of a straight cone, the tip of which is rounded. The cone angle of the interfering profile elements 6 amounts to approximately 90°. The height of the clear cross section Q of the profiles 3, related to the towing direction S, is minimal at the end row 7 in the embodiment shown. This is shown in the Fig. 4 and 5by a height change ΔH at the end row 7 which reduces the height of the clear cross-section Q. Snow guided through the clear cross-section Q during towing operation is thus compacted or compressed at the end row 7 along a height direction HR. The height of the clear cross-section Q is measured along the height direction HR. The height direction HR can - with a horizontally arranged piste surface - correspond to a direction of gravity. The height direction HR is oriented perpendicular to the piste surface. The height of the clear cross-section Q of the profiles 3, related to the towing direction S, at the end row 7 is, for example, between 0.75 and 0.90 times as large as the height of the clear cross-section Q of the other profiles 3, related to the towing direction S. In this case, the height of the clear cross-section Q at the end row 7 is reduced by approximately 15% compared to the height of the clear cross-section Q of the other profiles 3.In absolute terms, the height of the clear cross-section Q at the end row 7 can be between 1.0 and 5 mm lower than the height of the clear cross-section of the remaining profiles 3. For example, the height of the clear cross-section at the end row 7 can be reduced by 1.0 mm to 2.5 mm compared to the remaining profiles 3. In the present embodiment, the height of the clear cross-section at the end row 7 is reduced by approximately 1.5 mm compared to the remaining profiles 3. The particle "approximately" refers to measurement inaccuracies of approximately ± 10%.

[0033] As already mentioned, the profiles 3 in this case comprise at least one pre-embossing row 10 extending across the width B of the finisher arrangement 1. The pre-embossing row 10 has a plurality of pre-embossing profile elements 11. The pre-embossing row 10 with the pre-embossing profile elements 11 is arranged in a central section 4b of the profiling area 4 with respect to the drag direction S. The central section 4b adjoins the rear end section 4c in the drag direction S. The front end section 4a adjoins the central section 4b in the drag direction S. In other words: the pre-embossing row 10 is arranged along the drag direction S between the interference row 5 and the end row 7. Counter to the drag direction S, the interference row 5 is followed by the pre-embossing row 10 and the end row 7 follows the pre-embossing row 10.

[0034] During towing operation of the finisher assembly 1, the disruptive profile elements 6 break up a layer of snow on the slope surface. The pre-forming profile elements 11 then outline the broken-up snow cover, creating a rough profile of the slope surface. The rough profile is then covered and further compacted using the final profile elements 8 to determine the final shape of the profile of the slope surface. In other words: During towing operation, the snow cover is first loosened and then compacted in two stages. It is understood that the compaction of the snow cover can also be achieved in multiple stages.

[0035] In the embodiment shown, the pre-embossed profile elements 11 have an elongated shape extending longitudinally along the drag direction S. In a plan view of the underside 2 - see Fig. 3- the shape of the pre-shaped profile elements 11 is elliptical or drop-shaped in this case. While the disruptive profile elements 6 are designed to generate turbulence in the snow flowing through the clear cross-section Q, the shape of the pre-shaped profile elements 11 is designed such that turbulence in the snow flowing through the clear cross-section Q can be kept to a minimum. The shape of the end profile elements 8 and the end contour 9 also serves to keep turbulence in the snow flowing through the clear cross-section Q to a minimum. Against this background, the end profile elements 8 have a rib shape extending longitudinally along the towing direction S. In the present case, the rib shape of the end profile elements 8 is cigar-shaped or boat-hull-shaped.

[0036] The clear cross-section Q of the profiles 3 is larger at the disruptive row 5 than at the pre-shaped row 10 and larger than the end row 7. Accordingly, the disruptive elements 6 do not yet cause any significant compaction of the piste surface, but essentially only serve to loosen the snow cover on the piste surface. Along the towing direction S, one of the disruptive profile elements 6, one of the pre-shaped profile elements 10, and one of the profile elements 8 are arranged in a common alignment at a distance from one another in order to effect the successive compaction of the snow cover to create the profile pattern already explained above. Alternatively, it is conceivable that the profile elements of one of the rows of profiles 3 can be laterally offset from the alignment.

[0037] In this case, the end contour 9 widens in a funnel-like manner against the towing direction S. For example, the end contour 9 can be widened in a diffuser-like manner against the towing direction S. In this case, the end contour 9 gradually lifts off the runway surface against the towing direction S. A rearmost end of the end contour 9 with respect to the towing direction S is therefore located at a distance from the runway surface during towing operation of the finisher arrangement 1. In a plan view of the underside 2 of the finisher arrangement 1, the end contour 9 widens at an angle α which is, for example, between 20° and 30°. Viewed along the width direction BR, the end contour 9 lifts off the runway surface at an angle β, for example. The angle β can be 15° to 25°. In the embodiment shown, the angle β is approximately 20° and the angle α is approximately 25°.The width b and the height h of the clear cross-section Q of the final contour 9 change along the drag direction S.

[0038] The clear cross-section Q at the final contour 9, relative to the drag direction S, is in this case larger than the clear cross-section Q at the profiles 3, relative to the drag direction S. The clear cross-section Q at the final contour 9 can have a trapezoidal geometry. The clear cross-section Q at the profiles 3 can have a triangular geometry. The geometries of the clear cross-section both at the final contour 9 and at the profiles 3 can have a shape with rounded corners. For the above-mentioned ratios of the clear cross-section in various regions of the finisher arrangement 1, the area of the clear cross-section at the respective location can be used.

[0039] In this case, the profile elements 6, 8, 11 have free ends E facing away from the underside 2. The clear cross-section Q extends along the height direction HR up to an imaginary connecting line between two free ends E adjacent along the width direction BR. The free ends E of the profile elements 6, 8, 11 belonging to a row 5, 7, 10 are arranged at a uniform groove spacing D from one another. In other words: the profile elements 6, 8, 11 are arranged equidistant from one another in the respective row 5, 7, 10 along the width direction BR.

[0040] The interfering profile elements 6, the pre-stamped profile elements 11, and the end profile elements 8 each have a length L in the present case relative to the drag direction S. The length L of the interfering profile elements 6 can correspond to 0.7 to 1.0 times the groove spacing D. The length L of the pre-stamped profile elements 11 can correspond to 1.5 to 2.0 times the groove spacing D. The length of the profile elements 8 can correspond to 4.0 to 8.0 times the groove spacing D. The length L of the interfering profile elements 6 is in this case 0.8 times the groove spacing D. The length L of the pre-stamped profile elements 11 in the embodiment shown is 1.8 times the groove spacing D. In the present embodiment, the length L of the end profile elements 8 also corresponds to 5.8 times the groove spacing D.

[0041] Viewed along the drag direction S, flanks of the pre-stamped profile elements of a respective one of the pre-stamped profile elements 11, opposite one another along the width direction BR, can be set at an angle of approximately 90° to one another. Viewed along the drag direction S, flanks of a respective one of the end profile elements 8, opposite one another along the width direction BR can be set at an angle between 100° and 110°, for example 105°, to one another. A height of the interfering profile elements 6, measured along the height direction HR, can be less than a height of the other profile elements 8, 11. In the present case, the height of the interfering cones is reduced by approximately 15% compared to the height of the other profile elements.

[0042] By creating the profile pattern on the piste surface, the piste surface is intended to be visually appealing and provide good grip. In towing operation, the aligned profile elements 6, 8, 11 leave a negative triangular prism in the piste surface. The juxtaposition of many such triangular prisms along the width direction BR creates a so-called cord pattern. In the space between two adjacent profile elements 6, 8, 11 along the width direction BR, a triangular prism of the cord pattern filled with snow remains. The end contour 9 defines the area at which the snow leaves the finisher arrangement 1 in towing operation after passing through the free spaces between the profile elements 6, 8, 11. These free spaces form the clear cross-section Q of the profiles 3.

[0043] The end row 7 can transition directly, for example without any gap, into the end contour 9. The transition between the end row 7 and the end contour 9 can be rounded. The shape of the end contour 9 is reminiscent of a diffuser known from automotive technology, which is used to influence the aerodynamics of a vehicle equipped with such a diffuser. In contrast to the diffuser of such a vehicle, the end contour 9 does not primarily serve to increase contact pressure against the ground, but rather to keep the air / snow flow beneath the finisher arrangement 1 laminar for as long as possible during towing operation, before the air / snow flow detaches from the underside 2 of the finisher arrangement 1 after the profile pattern has been created.During towing operation, snow loosened by the interfering profile elements 6 accumulates in front of the pre-formed profile elements 11 to reliably fill the clear cross-section Q at the pre-formed profile elements 11. By narrowing the clear cross-section Q at the end row 7, snow prisms of the profile pattern can be pressed against their exposed edges. Since the snow is "trapped" between the end profile elements 8, it cannot escape when the height of the clear cross-section is reduced over an extension of the end profile elements 8 along the towing direction S.

[0044] As already mentioned, the cord pattern in the piste surface that can be created by the finisher arrangement 1 is composed of several snow prisms arranged next to one another along the width direction BR. The snow prisms each have an outward-facing longitudinal edge extending along the drag direction S, which is rounded and compacted by the end row 7. The length L of the end profile elements 8 and the successive reduction in the height of the clear cross-section Q at the end row 7 are intended to prevent turbulence from occurring in the area of the end profile elements 8 in the snow guided through the gaps between the end profile elements 8.

Claims

1. A finisher arrangement (1) for a towed piste preparation device (100), in particular snow sport piste preparation device (101), which consists at least in part of an elastically yielding material and is provided on its underside (2) facing the piste surface with profiled portions (3) which are arranged in a profiling region (4) of the underside (2) and, during towed operation, introduce a profiled pattern into the piste surface, the profiled portions (3) being distributed transversely of the towing direction (S) over a width (B) of the finisher arrangement (1), the profiled portions (3) having at least one disruptor row (5), extending over the width (B) of the finisher arrangement (1), of disruption profile elements (6) for breaking up the piste surface, the disruptor row (5) being arranged, in relation to the towing direction (S), in a front end portion (4a) of the profiling region (4), characterised in that the disruption profile elements (6) have a conical shape in the manner of a right cone with a rounded tip.

2. A finisher arrangement (1) according to claim 1, characterised in that the profiled portions (3) have at least one end row (7), extending over the width (B) of the finisher arrangement (1), of end profile elements (8) which, during towed operation, define an end geometry of the profiled pattern, and in that the end row (7) is arranged, in relation to the towing direction (S), in a rear end portion (4c) of the profiling region (4) and in that a clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3) is narrowed, in particular is minimal, at the end row (7).

3. A finisher arrangement (1) according to any of claims 1 or 2, characterised in that an end contour (9) of the finisher arrangement (1) is present on the underside (2) behind the profiled portions (3) in relation to the towing direction (S) and in that a clear cross-section (Q), in relation to the towing direction (S), of the end contour (9) increases in both width (b) and height (h) contrary to the towing direction (S), the clear cross-section being defined by interspaces arranged between the profiled portions along the widthwise direction of the finisher arrangement, through which interspaces snow present on the piste surface is guided along the towing direction during towed operation.

4. A finisher arrangement (1) according to any of the preceding claims, characterised in that the height of the clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3) is minimal at the end row (7).

5. A finisher arrangement (1) according to claim 4, characterised in that the height of the clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3) at the end row (7) is between 0.75 and 0.90 times as large as the height of the clear cross-section (Q), in relation to the towing direction (S), of the remaining profiled portions (3).

6. A finisher arrangement (1) according to claim 4 or 5, characterised in that the height of the clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3) at the end row (7) is between 1.0 mm and 5 mm, preferably between 1.0 mm and 2.5 mm, most preferably approx. 1.5 mm, smaller than the height of the clear cross-section (Q), in relation to the towing direction (S), of the remaining profiled portions (3).

7. A finisher arrangement (1) according to any of the preceding claims, characterised in that the profiled portions (3) have at least one preliminary shaping row (10), extending over the width (B) of the finisher arrangement (1), of preliminary shaping profile elements (11), the preliminary shaping row (10) being arranged, in relation to the towing direction (S), in a central portion (4b) of the profiling region (4) that adjoins the rear end portion (4c) in the towing direction (S) and / or that the front end portion (4a) adjoins in the towing direction (S).

8. A finisher arrangement (1) according to claim 7, characterised in that the preliminary shaping profile elements (11) have an elongate shape, preferably an elliptical or droplet-shaped shape in plan view onto the underside (2), that extends longitudinally along the towing direction (S).

9. A finisher arrangement (1) according to any of the preceding claims, characterised in that the end profile elements (8) have an in particular cigar or ship's hull shaped rib shape that extends longitudinally along the towing direction (S).

10. A finisher arrangement (1) according to any of the preceding claims, characterised in that the clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3) is greater, in particular wider, at the disruptor row (5) than at the preliminary shaping row (10) and / or than at the end row (7).

11. A finisher arrangement (1) according to any of the preceding claims, characterised in that the end contour (9) widens in the manner of a funnel, in particular of a diffuser, contrary to the towing direction (S), and / or in that the end contour (9) gradually rises away from the piste surface contrary to the towing direction (S).

12. A finisher arrangement (1) according to any of the preceding claims, characterised in that the clear cross-section (Q), in relation to the towing direction (S), of the end contour (9) is greater than the clear cross-section (Q), in relation to the towing direction (S), of the profiled portions (3).

13. A finisher arrangement (1) according to any of the preceding claims, characterised in that free ends (E) of the profile elements (6, 8, 11) associated with one row (5, 7, 10) are arranged at a uniform groove spacing (D) from one another, a length (L), in relation to the towing direction (S), of the disruption profile elements (6) corresponding to 0.7 to 1.0 times, and / or of the preliminary shaping profile elements (11) corresponding to 1.5 to 2.0 times, and / or of the end profile elements (8) corresponding to 4.0 to 8.0 times the groove spacing (D).

14. A towed piste preparation device (100), in particular snow sport piste preparation device (101), with a finisher arrangement (1) according to any of the preceding claims, and with at least one sculpting unit (102) for preparing the piste surface, the sculpting unit (102) being arranged in front of the finisher arrangement (1) in the towing direction (S).

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