EP2975180A1 - Device and assembly for tracking cross-country ski tracks, method for preparing cross-country ski tracks, piste vehicle with an assembly for tracking cross-country ski tracks - Google Patents

Abstract

The present invention is directed to a device (1) for tracking cross-country ski trails. The device (100) comprises one or more track drawing bodies (10) for tracking a cross-country track. The device (100) comprises at least one tearing device (11) for tearing the substrate and a milling device (12) which is associated with the tracer (s). The milling device (12) is arranged between the track drawing body (10) and the tearing device (11). The tearing device (11) is arranged in a direction of travel of the device (100) in front of the respective track drawing body (10).

Description

The present invention relates to an apparatus and arrangement for tracking cross-country ski trails, and to a method for preparing cross-country ski trails and a snow groomer having a device or arrangement for tracking cross-country trails and for practicing a method of tracking cross-country trails according to the preambles of the independent claims.

Cross-country ski trails include two individual lanes at a desired distance, which can steer and receive the cross-country skis in predetermined lanes. Such tracks are tracked by means of cross-country trailers to provide a safe and comfortable trail for cross-country skiers.

With the DE 32 06 976 For example, a cross-country track device has become known which, for example, is pulled through the snow by a harness and creates a corresponding cross-country track. The device comprises a doctor blade, which presses the snow in a first step and gives it the well-known groove structure. The trailers include toe bodies that push a first track into the fresh snow. Arranged behind the Vorspurkörper are knives that tear the track to the desired level. Behind the knives a squeegee blade is arranged, which presses in the track fallen snow again. Following are track bodies, which press any fallen back into the track snow to the track and give the track the final shape.

Such a device is expensive to manufacture and requires different settings depending on the snow conditions.

With the DE 34 20 210 is also a device for tracking or grading cross-country ski trails has become known. This device is also pulled over the snow, where it is essentially carried by a front in the direction of travel floating body. Behind the float is a tearing device, which loosens and breaks up the snow over the entire width of the track device. Following the tearing device is a tiller, which also mills and shreds the snow over the entire depth. The snow is so deeply torn open and milled that in the now loose snow a cross-country track can be pressed. The tiller is driven by a separate unit. Following the router are track plates, which is preceded by a slide, and press the track in the now prepared snow.

This track-type tracker requires a high drive power and, due to the extensive mechanical processing of the snow, a high tractive power of the prestressed traction device.

It is an object of the invention to overcome the disadvantages of the prior art. In particular, a track device is to be made available, which is easy to use, requires little or no additional energy and improves the quality of the trail.

This object is achieved by the devices and methods defined in the independent patent claims.

Further embodiments emerge from the dependent claims.

An apparatus according to the invention for tracking cross-country ski tracks comprises at least one or more track drawing bodies for tracking a cross-country track. The device comprises one or more tearing devices for tearing open the substrate as well as a milling device. The milling device is arranged in a direction of travel of the device in front of the track drawing body and after the tearing device. Each tracking body is associated with a tearing device which tears open only a substantially corresponding to the width of the track drawing body area. Thus, the tearing device is arranged in a direction of travel of the device in front of the respective track drawing body.

The individual assignment of a tearing device to the individual track bodies allows punctiform tearing of the substrate at the point where the cross-country track is drawn with the track drawing bodies. The spaces between the tearing devices remain free. The precise and precise tearing of the substrate reduces the energy expenditure that has to be introduced into the device. The ground is only partially torn open. Thus, the device is less prone to different textures of the substrate. The ground, in this case, for example, loose snow or already pressed snow, can be processed evenly. The device is also particularly suitable for processing very hard snow or ice.

Here and below is understood by tearing the part of a device which engages or can engage in the ground and the substrate in a desired Area breaks up. An external dimension of the tearing device also relates to the part or area of the tearing device which can engage or engage in the ground.

If the device comprises a plurality of track drawing bodies with associated tearing devices, then a gap between the individual tearing devices is preferably free, so that the ground, which is located between the tearing devices and subsequently between the individual cross-country tracks, is not processed. The energy expenditure for tearing and traces is thus minimized.

In a device having a plurality of tracking bodies, the track drawing bodies are preferably arranged in pairs next to one another. The associated tear-open devices are also arranged in pairs in a direction of travel of the device in front of the respective track drawing body.

Thus, a two-piece cross-country track, which corresponds to standards common in ski sports can be produced in one step.

Preferably, the device is designed such that the ratio of an outer dimension of the tearing device transverse to the cross-country track to an outer dimension of the track drawing body 2: 1 and preferably [1.5: 1] and more preferably [1,1: 1] does not exceed. The outer dimension of the tear-open device is essentially understood to mean the dimension of the torn-open area.

These conditions ensure that the substrate is torn open only in the area of the track drawing body. An unnecessary processing of the substrate is prevented.

The tearing device of the device preferably has cutting blades.

Cutting knives are capable of cutting the ground, reducing the resistance of the device as it moves through the ground and thus also reducing the energy required to pull the device.

Cutting knives may preferably be interchangeable. For example, different cutting blades with different cutting geometries are conceivable for different ratios of the background. Also, this facilitates the maintenance, since scuffed or damaged cutting blades can be easily and quickly replaced.

The milling device may have a milling drum.

This allows a uniform processing of the torn underground.

Preferably, the milling device has an engagement depth which does not exceed a track depth of the cross-country track and is preferably at most 50% and preferably at most 30% of the track depth. Particularly preferably, the engagement depth is 10% to 15% of the track depth. This also makes it possible to reduce the energy input required. Depending on the condition of the subsoil, and especially on already existing cross-country tracks, which are nachgespurt, it is thus possible and it is sufficient to edit the track only in the area of the surface of the substrate.

Preferably, the milling device has an outer dimension transverse to the cross-country track, which exceeds an outer dimension of the track drawing body transversely to the cross-country track and in particular an outer dimension of the tearing device transversely to the cross-country track, preferably by at least 5% and more preferably by at least 10%.

Thus, the cross-country ski, or the ground in which the cross-country track is located, can be selectively processed in the area that is necessary for an accurate execution of the trail of tracks. Such an outside dimension is particularly advantageous, since the over-milled surface covers both the area of the track drawing body and the area which was torn open by the tearing device.

Preferably, the device for tracking cross-country trails exactly on a milling device, which is arranged between Spurziehkörpern and tearing devices. Preferably, the tearing device is arranged in a direction of travel of the arrangement in front of the respective track drawing body.

The arrangement with a single milling device simplifies the structure of the arrangement. In addition, the surface of the substrate over the width of several Spurziehkörpern be milled evenly. Thus, a homogeneous cross-country trail can be made.

Preferably, a common milling device is associated with a plurality of tracking bodies and has an outer dimension transverse to the cross-country track, which has a common dimension of Spurziehkörper transversely to the cross-country track and in particular a common dimension of the tearing devices transversely to the cross-country track exceeds. Preferably, this dimension exceeds the aforementioned dimensions by at least 5% and more preferably by at least 10%.

This ensures that a uniform surface can be obtained when several cross-country tracks are being tracked.

The device may be pulled by a towing vehicle or arranged behind a towing vehicle in the direction of travel. Typically, the towing vehicle leaves tracks in the underground. Towing vehicles are manufactured in different sizes and have different widths. Typically, towing vehicles are 2.5m, 2.8m, 3.2m, 4.3m or 4.5m wide and leave a correspondingly wide lane. Preferably, the outer dimension of the common milling device is greater than an outer dimension of the lane. Lanes of the towing vehicle can thus also be milled, whereby a uniform surface can be obtained.

Preferably, a common outer dimension of the tearing devices transversely to the cross-country track exceeds a common outer dimension of the track drawing body transversely to the cross-country track. Preferably, the common outer dimension of the tearing devices exceeds the common outer dimension of the track drawing bodies by at least 5%, preferably by at least 10%.

Thus, the tearing device processes the ground only in the area in which the track drawing body pull the cross-country track. The energy input that must be applied to the device and the traces of the cross-country track must be applied is reduced. The milling device of the arrangement may have an engagement depth which does not exceed a track depth of the cross-country track and is preferably at most 50% and preferably at most 30% of the track depth. Particularly preferably, the engagement depth is 10% to 15% of the track depth.

This allows a superficial treatment of the substrate and also reduces the necessary energy input. In addition, a fixed bed remains below the milled surface, which contributes to the stability of the cross-country ski trail and extends the durability of the cross-country ski trail.

• Aufreissen eines Untergrundes
• Überfräsen des aufgerissenen Untergrundes und
• Spuren des Untergrundes.

A further aspect of the invention relates to a method for preparing cross-country ski tracks with a device comprising a milling device, one or more tracking bodies and one or more tearing devices and preferably with a device as described herein. The method comprises the steps:

• Ripping open a subsoil
• Overmilling the torn underground and
• Traces of the underground.

The substrate is torn open by means of the tearing device associated with the respective track drawing body in a region which corresponds only substantially to the width of the track drawing body. Preferably, the torn-open area does not exceed a ratio of 2: 1 and preferably of 1.5: 1 and more preferably of 1.1: 1 to an outside dimension of the cross-country track transversely to the cross-country track.

This method enables a precise introduction of the energy in the area of the later cross-country track and thus reduces the total energy expenditure that must be used to trace cross-country ski trails.

Preferably, the ground is milled to an engagement depth that does not exceed a track depth of the cross-country track and is preferably at most 50% and more preferably at most 30% of the track depth. Particularly preferably, the engagement depth is 10% to 15% of the track depth.

This also allows a uniform processing of the substrate and reduces the energy consumption and favors the construction of the cross-country ski trail, as mentioned herein.

Preferably, the substrate is milled in an area which exceeds an outer dimension of the cross-country track transversely to the cross-country track and in particular an outer dimension of the torn-open area, preferably by at least 5% and more preferably by at least 10%.

A uniform configuration of the track, which leaves a high-quality visual impression, is thus achieved. The torn underground is thus processed and maintains a uniform structure.

Another aspect of the invention relates to a towing vehicle, and more particularly to a snow groomer with an arrangement or apparatus as described herein.

This allows use on existing and new cross-country ski trails.

Another aspect of the invention relates to a towing vehicle and, preferably, a snow groomer for carrying out the method as described herein.

With the snow groomer, the device can be pulled in the direction of travel. The energy consumption for producing cross-country ski trails and the energy requirement of the snow groomer is reduced. The snow groomer can move faster, resulting in a time savings in the tracks of cross-country ski trails.

Figur 1:

eine schematische Darstellung einer erfindungsgemässen Anordnung in einer perspektivischen Ansicht;

Figur 2:

eine schematische Ansicht einer Aufreissvorrichtung in einer perspektivischen Ansicht;

Figur 3:

eine schematische Darstellung einer erfindungsgemässen Vorrichtung in Seitenansicht;

Figur 4:

einen Querschnitt durch eine Langlaufloipe,

Figur 5:

eine schematische Darstellung der Vorrichtung in einer Draufsicht,

Figur 6:

eine schematische Darstellung einer weiteren Ausführungsform der Vorrichtung in einer schematischen Darstellung und

Figur 7:

eine weitere Ausführungsform einer erfindungsgemässen Anordnung in der Draufsicht.

On the basis of figures, which represent only embodiments, the invention is explained in more detail below:

FIG. 1:

a schematic representation of an inventive arrangement in a perspective view;

FIG. 2:

a schematic view of a tearing device in a perspective view;

FIG. 3:

a schematic representation of an inventive device in side view;

FIG. 4:

a cross section through a cross-country ski trail,

FIG. 5:

a schematic representation of the device in a plan view,

FIG. 6:

a schematic representation of another embodiment of the device in a schematic representation and

FIG. 7:

a further embodiment of an inventive arrangement in plan view.

FIG. 1 shows a schematic representation of a device 100 for tracks of cross-country trails in a perspective view. Indicated are two caterpillars 20 of a snow groomer. The device 100 is connected to the snow groomer and is pulled by it. The piste vehicle with its caterpillars 20 and the device 100 are located on a substrate, in this case pressed snow. In the rear area two cross-country ski trails from parallel tracks tracks 30 are indicated (only one designated). Partially shown is a tearing device 11, which is arranged in front of a milling device 12 in the direction of travel F. The track drawing bodies (cf. FIG. 3 ) are not shown here for clarity.

FIG. 2 shows a schematic representation of a pair of tearing devices 11 in a perspective view. The tearing devices 11 are each assigned sliding shoes 110. The sliding shoes 110 rest on the surface of the ground, and prevent too deep sinking of the tearing devices 11 in the ground. The tearing devices 11 and their associated sliding shoes 110 are arranged on a cross member 111 which can be fastened to a snow groomer. The tearing devices are adjustable in height via hydraulic cylinders 112. With the hydraulic cylinders 112, the contact pressure of the tearing devices 11 can also be adjusted to the ground.

FIG. 3 shows a schematic view of an inventive device 100 in a side view. The direction of travel F of the device 100 is shown by an arrow. In the direction of travel vorderst is a tearing device 11, behind which a milling device 12 is arranged with a milling drum 120. Subsequently arranged on the cutting device 12 is a cover 121, which milled the Holds back snow. Subsequent to the milling device 12, a track drawing body 10 is arranged. The dotted line 32 represents the surface of the substrate. The dotted line 31 represents the area to which the ground is milled with the milling device 12. The engagement depth of the tearing device is significantly below the milling depth 31 and substantially corresponds to the track depth S (FIG. FIG. 4 ).

FIG. 4 shows a schematic view of a cross section through a cross-country ski track tracks 30, wherein the individual dimensions of FIG. 3 are also shown. The cross-country ski trail consists of two trail tracks 30, which are arranged side by side. The trail tracks 30 are located in the ground with a surface 32. The trail tracks 30 have a track depth S and an outside dimension AL. The ground is torn open in the area of the tracks 30 each to a depth which essentially corresponds to the track depth S. Subsequently, the ground is milled to a depth T, which in the present case is about 25% of the track depth S. The milled surface is designated in this case by the reference numeral 31.

FIG. 5 shows a schematic representation of an inventive device 100 in a plan view. Parallel to the first device 100, a second device 100 is arranged. Such a pairwise arrangement allows the direct trace of a cross-country ski trail. Shown in the direction of travel F is a tearing device 11, followed by a milling device 12, again followed by a track drawing body 10. The tearing device 11 has an outer dimension AA, which in the present case corresponds to approximately 1.1 times the outer dimension AS of the track drawing body 10. The milling device 12 has an outer dimension AF, which in this case corresponds to approximately 1.8 times the outer dimension AA of the tearing device. Between the paired parallel devices 100, the space is free.

FIG. 6 shows a schematic representation of an inventive device 100 with multiple track drawing bodies 10 and tearing 11. According to the description to FIG. 5 the arrangement in the direction of travel F seen two tearing devices 11, a milling device 12 and two Spurziehkörper 10. The milling device 12 is assigned to several and presently all track drawing bodies 10. The tearing devices 11 have a common outer dimension AGA, which in the present case corresponds to approximately 1.1 times a common outer dimension AGS of the track drawing bodies. The milling device 12 has an outer dimension AF, which corresponds to approximately 120% of the common outer dimension AGA of the tearing device.

FIG. 7 shows a further embodiment of a device 100 with a plurality of tracing elements 10. In the direction of travel F several tearing devices 11, followed by a milling device 12, further followed by a plurality of tracing bodies 10 are arranged. The milling device 12 is associated with several and in the present case all track drawing bodies 10. The tearing devices 11 have a common outer dimension AGA, which corresponds to approximately 1.05 times a common outer dimension AGS of the track drawing bodies. The milling device 12 has an outer dimension, which in the present case corresponds to approximately 1.1 times the common outer dimension AGA of the tearing device.

Claims (15)

A cross-country ski tracker (100) comprising one or more track-tracing bodies (10) for tracing a cross-country track, one or more tearing devices (11) for tearing underground, and a milling device (12), the milling device (12) being in a traveling direction the device (100) is arranged in front of the track drawing body (10) and after the tearing device (11),
characterized in that
Each tear-drawing body is associated with a tear-open device (11), which tears open only an area substantially corresponding to the width of the track-drawing body. Device (100) according to claim 1, characterized in that the ratio of an outer dimension (AA) of the tearing device (11) transversely to the cross-country track to an outer dimension (AS) of the track drawing body (10) 2: 1 and preferably 1.5: 1 and more preferably 1.1 : 1 does not exceed. Device (100) according to one of claims 1 or 2, characterized in that the tearing device (11) has cutting blades. Device (100) according to one of claims 1 to 3, characterized in that the milling device (12) has a milling drum (120). Device (100) according to one of claims 1 to 4, wherein the milling device (12) has an engagement depth (T) which does not exceed a track depth (S) of the cross-country track and preferably at most 50%, preferably at most 30% and particularly preferably 10% to 15% of the track depth (S). Device (100) according to one of claims 1 to 5, characterized in that the milling device (12) has an outer dimension (AF) transverse to the cross-country track, which has an outer dimension (AS) of the track drawing body (10) transversely to the cross-country track and in particular an outer dimension ( AA) of the tearing device (11) transversely to the cross-country track, preferably by at least 5%, preferably by at least 10%. Device (100) according to one of claims 1 to 6, wherein exactly one milling device (12) is arranged between the track drawing body (10) and the tearing device (11). Apparatus (100) according to any one of claims 1 to 7, characterized in that the milling device (12) is associated with a plurality of tracing bodies and an outer dimension (AF) transverse to the cross-country track having a common dimension (AGS) of several track drawing body (10) transversely to Cross-country track and in particular a common dimension (AGA) of several tearing devices (11) transversely to the cross-country track exceeds, preferably by at least 5%, preferably by at least 10%. Device (100) according to claim 8, characterized in that the common dimension (AGA) of the tearing devices (11) exceeds the common dimension (AGS) of the track drawing bodies (10), preferably by at least 5%, preferably by at least 10%. Device (100) according to one of claims 7 to 9, wherein the milling device (12) has an engagement depth (T), which does not exceed a track depth (S) and is preferably not more than 50%, preferably not more than 30% and particularly preferably 10% to 15% of the track depth (S). A method of preparing cross-country ski tracks with a device (100) comprising a milling device, one or more tracking bodies and one or more rupture devices, in particular a device according to any one of claims 1 to 10, comprising the steps - tearing open a subsoil - Overmilling the torn underground and - traces of the underground characterized in that the substrate is torn open by means of the tearing device associated with the respective track drawing in a region which corresponds only to a substantially the width of the track drawing body corresponding area, wherein the torn-open area preferably a ratio of 2: 1 and preferably from 1.5: 1 and particularly preferably does not exceed 1.1: 1 to an outer dimension (AL) of the cross-country track transverse to the cross-country track. A method according to claim 11, wherein the ground is milled to an engagement depth (T) which does not exceed a track depth (S) of the cross-country track, and preferably at most 50%, preferably at most 30% and particularly preferably 10% to 15% of the track depth (S ) is. Method according to one of claims 11 or 12, characterized in that the substrate is milled in an area having an outer dimension (AL) of the cross-country track transverse to the cross-country track and in particular a Outside dimension of the torn area exceeds, preferably by at least 5%, preferably by at least 10%. Towing vehicle and in particular piste vehicle with an arrangement or a device according to one of claims 1 to 10. Towing vehicle and in particular snow groomer for carrying out the method according to one of Claims 11 to 13.

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