WO2003033822A1 - Schipisten-präparationseinrichtung - Google Patents
Schipisten-präparationseinrichtung Download PDFInfo
- Publication number
- WO2003033822A1 WO2003033822A1 PCT/AT2002/000287 AT0200287W WO03033822A1 WO 2003033822 A1 WO2003033822 A1 WO 2003033822A1 AT 0200287 W AT0200287 W AT 0200287W WO 03033822 A1 WO03033822 A1 WO 03033822A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- snow
- preparation
- ski slope
- nozzles
- preparation device
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H4/00—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow
- E01H4/02—Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow for sporting purposes, e.g. preparation of ski trails; Construction of artificial surfacings for snow or ice sports ; Trails specially adapted for on-the-snow vehicles, e.g. devices adapted for ski-trails
Definitions
- the invention relates to a ski slope preparation device which, when displaced relative to the snow layer of the snow cover to be prepared, crushes the snow by means of a crushing device.
- the invention further relates to a method for preparing a ski slope.
- Such ski slope preparation devices are known as additional devices for snow groomers. They have a milling shaft, on the circumference of which teeth are distributed. The additional device with the milling shaft is attached to the rear of the snow groomer. When the snow groomer moves forward, the rotating milling shaft is shifted in relation to the snow layer to be prepared, causing the teeth to knock chunks of snow out of the snow layer and thereby crush the snow. The chunks can vary in size depending on the nature of the snow cover and can reach the size of a fist.
- the preparation is finished by a bar attached to the back of the attachment and brushing over the snow cover. This bar is usually designed as a structural bar with tooth-like projections directed against the slope surface.
- this preparation can lead to a very restless, bulbous slope, with the individual tubers forming an insufficient connection with each other.
- a preparation can be applied to the slope before the snow layer to be prepared is crushed. Nevertheless, the result of this slope preparation is not optimal in many snow conditions.
- a preparation device in the form of an injection spray bar is also known from AT 001 605 U2.
- the spray bar has a large number of nozzles directed against the slope surface over its length.
- the spray bar is moved at a distance from the slope surface over the slope to be groomed, water being injected into the snow cover through the nozzles should. Due to the spacing of the nozzles from each other, a ribbed runway can occur here during preparation.
- a slope prepared in this way has an inhomogeneous course of its state parameters, for example its hardness, in its height profile. In racing, for example, this is undesirable.
- the object of the invention is to provide a novel ski slope preparation device or a new method for the preparation of a ski slope, by means of which or by means of which a ski slope with an improved characteristic can be produced. This is achieved according to the invention by a ski slope preparation device with the features of claim 1 or by a method for preparing a ski slope with the features of claim 14.
- the basic idea of the invention is to add a preparation agent to the crushed snow when it is whirled up or when it is whirled up.
- the preparation can thus be optimally absorbed by the snow and there is a homogeneous distribution of the preparation over the prepared snow layer.
- the prepared ski slope has a very homogeneous course of its state variables in its height profile, for example its hardness.
- the comminution device is designed in such a way that the snow is comminuted relatively finely, which means that the volumes of the parts formed in any case have a volume of less than 5 cm 3 . Comminution to a particle volume of less than 1 cm 3 or even smaller is particularly preferred.
- the snow can then be pulverized.
- the snow particles provided with a preparation in the whirled-up state or during the whirling up can bond well to one another after they have been set down, as a result of which a solid and homogeneous layer of snow is formed.
- a milling cutter arranged within the preparation chamber is preferably provided as the comminution device and, when it is shifted against the snow layer to be prepared, scrapes off this snow, which is subsequently whirled up.
- Such milling machines are known, for example, from conventional snow blowers in the form of knives rotating about an axis. These knives can have a helical course around the axis. In snow blowers, these cutters are used to feed the snow to be cleared to a blower.
- the speed of the milling cutter with the knife is usually relatively slow.
- a relatively high speed is preferred, which can be, for example, more than 500 revolutions or more than 1000 revolutions per minute. The speed can be selected depending on the cutting speed on the knives and the speed of travel of the device. At a relatively high speed, the cutter can also be used to whirl up the crushed snow at the same time as the crushing.
- a series of nozzles with upwardly pointing nozzle orifices can also be provided on the back of the milling cutter, from which preparation agent which takes crushed snow out swirls, swirls it and thus a homogeneous mixing of powdered snow and dosed added preparation.
- a nozzle in the sense of this invention is a device for the metered and directed delivery of a preparation in the form of a substance or a mixture of substances.
- the substance or substances contained in the preparation can be liquid, gaseous or solid.
- the preparation agent dispensed from the nozzles preferably contains or is formed by a spray.
- a spray is a mixture of a gaseous and a liquid substance that is released under pressure from the nozzle.
- An air / water mixture to which further constituents can optionally be added is particularly preferred.
- ski slopes is used in this document not only for slopes for alpine skiing but also for other slopes to be used with skis, for example cross-country trails for cross-country skiing or run-in or run-out slopes for ski jumping. Further advantages and details of the invention are explained below with reference to the exemplary embodiments of the invention shown in the figures.
- the drawing shows:
- FIG. 1 is a schematic perspective view of a device according to the invention attached to a snow groomer (with "invisible” lines drawn in);
- FIG. 2 shows a schematic top view of the device according to FIG. 1;
- 3 shows a schematic cross section;
- 4 shows a schematic view of a milling machine;
- FIG. 5 shows a section along the line AA of FIG. 4.
- Fig. 6 is a view of a shredding device in the form of an oscillating
- Fig. 7 is a schematic representation of a cross section through an embodiment with a vibrating plate (scraper bar) as a shredding device.
- a ski slope preparation device is fixed on the back of a snow groomer 1, of which a rear part of the chassis 2 and the crawler chassis 3 is visible in FIGS. 1 to 3.
- the preparation device is connected to the chassis 2 via a support 6 which can be pivoted about a horizontal axis 4 by means of a piston-cylinder unit 5.
- the carrier 6 carries a cover 7 at its free end. Below this cover 7 there is a preparation chamber 8 which is delimited at the top by the upper boundary wall 29 formed by the cover 7.
- the preparation chamber 8 is laterally delimited by side parts 9 and down by the snow cover 10, which rests on a base 11.
- the preparation device has a shredding device for the snow of the snow layer of the snow cover 10 to be prepared, which has a milling cutter 12 arranged within the preparation chamber for scraping snow off the snow layer of the snow cover to be prepared.
- This milling machine in the form of a scraping roller shown in more detail in FIGS. 4 and 5 has a central shaft 13, which is designed here as a hollow shaft.
- the shaft 13 carries a plurality of disks 15 spaced apart from one another in the axial direction and perpendicular to the axis 14 of the shaft.
- Discs 15 On the outer circumference thereof Discs 15, a knife 16 is fixed, which extends in the longitudinal direction of the shaft 13 helically around the shaft 13. In the embodiment shown, four disks 15 are shown.
- the milling machine 12 is set in rotation about the axis 14 by a drive device (not shown in the figures), the speed of rotation advantageously being over 500 revolutions per minute or over 1000 revolutions per minute (also depending on the distance of the knife 16 from the axis 14).
- the circumferential limitation of the cutter during the rotation of the knife 16 or the knife is indicated by the broken line 31.
- the scraped-off snow is thereby ejected backwards and upwards, as a result of which the crushed snow is whirled up within the preparation chamber 8.
- the particle size of the whirled up snow particles is relatively small and these particles preferably have a volume of in any case less than 1 cm 3 . The snow is thus virtually pulverized and whirled up in the preparation chamber 8.
- a plurality of nozzles 17 are provided in the shaft 13, which are indicated schematically in FIGS. 4 and 5 and are formed, for example, by radial openings in the shaft 13 designed as a hollow shaft.
- a plurality of rows of nozzles 17 are provided, each comprising a plurality of nozzles spaced apart in the longitudinal direction of the shaft 13, the individual rows of nozzles 17 being spaced apart from one another in the circumferential direction of the shaft 13.
- a cover 18 for a portion of the nozzles 17 is also provided in the interior of the shaft 13. This cover 18 is stationary with respect to the axis 14, so that only a part of the nozzles which are located in a sector released by the cover 14 are acted upon.
- a preparation agent is added to the snow whirled up in the preparation chamber 8 and is supplied to the nozzles 17 by the shaft 13.
- the preparation agent sprayed from the nozzles into the preparation chamber 8 is shown schematically in FIG. 3 by dash-dotted lines 32. posed.
- This preparation is preferably a spray, that is to say a liquid-gas mixture sprayed out under pressure, for example a water-air mixture.
- other substances can also be provided as preparation agents, for example chemical additives can be added to a water-air mixture.
- the jets emerging from the nozzles 17 additionally support the swirling of the powdered snow in the preparation chamber 8.
- one or more devices 19 having nozzles 30 which are separate from the milling cutter can be provided within the preparation chamber 8. 1 to 3, such a device 19 with nozzles 30 arranged behind the milling cutter 12 and in the lower region of the preparation chamber 8 is shown schematically. This is formed by a tube 20 which extends essentially over the length of the preparation chamber 8 and is arranged here in a stationary manner in the preparation chamber and which is provided with a plurality of nozzles 30 for spraying a preparation agent into the preparation chamber 8.
- nozzles 30 spaced apart in the longitudinal direction of the pipe 20 (for example in the form of openings through the pipe wall) can be provided, these rows being arranged in a peripheral part of the pipe lying in the region of the upper side of the pipe.
- the preparation agent emerging under pressure from the nozzles can support the swirling and swirling of the snow in the preparation chamber 8.
- the cover 9 is formed in its rear area, as seen in the direction of travel 27, sloping backwards.
- the snow that is whirled up is gradually compressed.
- a bar 23 is provided, which is drawn over the newly formed surface of the snow which has again been deposited and provided with a preparation agent.
- This bar can be designed in a conventional manner as a structural bar with tooth-like elevations arranged on its underside.
- the bar is pivotally mounted about a horizontal axis and can be pressed against the snow surface by means of a piston-cylinder unit 21, which is arranged between the bar 23 and a bracket 22 attached to the support 6.
- a piston-cylinder unit 21 which is arranged between the bar 23 and a bracket 22 attached to the support 6.
- the comminution device comprises a plate 25 (scraper bar) provided with a plurality of passage openings 24, which includes an angle with the vertical in the range between 0 ° and 60 ° and from one into the
- the drive device can be set in vibration in its plane, which is indicated in FIG. 6 by the arrow 26.
- the snow of the layer of snow to be prepared which is scraped off from the openings 24, which are preferably sharp-edged, passes through the openings 24 and thereby reaches the preparation chamber 8 provided by upwardly directed nozzles 30, wherein the snow entering the preparation chamber 8 through the openings 24 is whirled up by the preparation agent exiting under pressure from the nozzles 30 of the nozzle device 19, the preparation agent also being added.
- the direction of travel 27 is shown schematically by an arrow in FIGS. 3 and 7.
- a further device 28 having nozzles can be provided, which has at least one row of nozzles pointing downwards, by means of which, for example, granules can be applied to the snow cover.
- a multitude of advantages over a conventional slope preparation can be achieved.
- Different types of snow contained within the layer to be prepared can be mixed to form a homogeneous prepared snow layer.
- Icy slopes can in turn be regenerated into easy-to-drive slopes, which results in a reduced risk of falling and thus injury for the user.
- the substances in the preparation can be metered into the powdered snow precisely and evenly distributed, resulting in an optimal preparation result.
- the required amount of chemical additives can be compared to a conventional slope preparation can be significantly reduced or, depending on the conditions, can be omitted entirely. A very quick and effective slope preparation is achieved without a lot of people.
- the hardness and thickness of the prepared layer can be optimally adapted to the requirements.
- slopes with approximately the same properties can be provided at racing events at different locations.
- a quick new preparation can be carried out, which in turn enables optimal slopes to be achieved. Icing the
- Snow surface is not necessary on a slope prepared according to the invention in order to achieve the wear resistance required, for example, for ski racing, which in addition to reducing the risk of injury also protects the material, for example the athletes' skis.
- the amount and composition of the preparation is selected depending on the conditions such as the snow conditions, the climatic conditions and the required properties of the finished snow surface.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02778967A EP1436467A1 (de) | 2001-10-19 | 2002-10-04 | Schipisten-präparationseinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT16682001A AT410954B (de) | 2001-10-19 | 2001-10-19 | Schipisten-präparationseinrichtung |
ATA1668/2001 | 2001-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003033822A1 true WO2003033822A1 (de) | 2003-04-24 |
Family
ID=3688596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2002/000287 WO2003033822A1 (de) | 2001-10-19 | 2002-10-04 | Schipisten-präparationseinrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1436467A1 (de) |
AT (1) | AT410954B (de) |
WO (1) | WO2003033822A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2035269A5 (de) * | 1969-02-12 | 1970-12-18 | Boschung Fa M | |
AT317970B (de) * | 1971-02-22 | 1974-09-25 | Koenig Maschinen E | Gerät zum Präparieren von Skipisten u.dgl. |
US4914923A (en) * | 1986-12-05 | 1990-04-10 | Le Froid Industriel York, S.A. | Method of covering artificial alpine- or nordic-skiing tracks with snow and means for implementing the method |
AT1605U2 (de) | 1997-02-17 | 1997-08-25 | Christian Steinbach | Injektionssprühbalken |
DE29913857U1 (de) * | 1999-08-09 | 2000-12-21 | Kaessbohrer Gelaendefahrzeug | Fräswelle |
-
2001
- 2001-10-19 AT AT16682001A patent/AT410954B/de not_active IP Right Cessation
-
2002
- 2002-10-04 EP EP02778967A patent/EP1436467A1/de not_active Withdrawn
- 2002-10-04 WO PCT/AT2002/000287 patent/WO2003033822A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2035269A5 (de) * | 1969-02-12 | 1970-12-18 | Boschung Fa M | |
AT317970B (de) * | 1971-02-22 | 1974-09-25 | Koenig Maschinen E | Gerät zum Präparieren von Skipisten u.dgl. |
US4914923A (en) * | 1986-12-05 | 1990-04-10 | Le Froid Industriel York, S.A. | Method of covering artificial alpine- or nordic-skiing tracks with snow and means for implementing the method |
AT1605U2 (de) | 1997-02-17 | 1997-08-25 | Christian Steinbach | Injektionssprühbalken |
DE29913857U1 (de) * | 1999-08-09 | 2000-12-21 | Kaessbohrer Gelaendefahrzeug | Fräswelle |
Also Published As
Publication number | Publication date |
---|---|
ATA16682001A (de) | 2003-01-15 |
EP1436467A1 (de) | 2004-07-14 |
AT410954B (de) | 2003-09-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3721014B1 (de) | Streuvorrichtung für streufahrzeuge | |
DE1812459A1 (de) | Verfahren und Vorrichtung zur Herstellung trockener,frei fliessfaehiger Agglomerate pulverfoermigen Guts | |
EP0102557B2 (de) | Sämaschine | |
EP0532055A2 (de) | Verfahren zum Ausbringen von Düngemitteln mittels eines Zentrifugaldüngerstreuers | |
EP3320765B1 (de) | Scheibenschlitzeinheit für eine gülleausbringvorrichtung | |
DD250869A5 (de) | Verfahren und vorrichtung zum herstellen bituminoeser gemische | |
DE202009003800U1 (de) | Kehrgerät für eine Oberfläche | |
AT410954B (de) | Schipisten-präparationseinrichtung | |
EP2586913A2 (de) | Streuvorrichtung, insbesondere zum Ausbringen von Streusplitt | |
DE3924647C2 (de) | ||
EP1166615A1 (de) | Reinigungseinrichtung und Mähwerk | |
DE1071403B (de) | ||
DE1759134A1 (de) | Verfahren zum Aufbereiten einer harten oder eisaehnlichen Schneeoberflaeche und dazugehoeriges Geraet | |
EP0207368A1 (de) | Breitflächige Saatgutverteilung und eine Sämaschine | |
DE3906756A1 (de) | Schleuderstreuer | |
DE3917387C1 (en) | Path forming and/or renewing vehicle - has soil penetrating cutter shoe on chassis, front, whose penetration depth correspond to grass clump | |
DE7601865U1 (de) | Vorrichtung zum Bestreuen von Verkehrsflächen | |
DE3309743C2 (de) | ||
EP0439718B1 (de) | Schleuderdüngerstreuer | |
AT396318B (de) | Streuwagen | |
DE9416478U1 (de) | Vorrichtung zum Verteilen von Mulch im Gelände | |
DE19906453A1 (de) | Verteilvorrichtung einer Zerkleinerungsvorrichtung | |
DE4435836A1 (de) | Vorrichtung zum Verteilen von Mulch im Gelände | |
EP1327717B1 (de) | Streuvorrichtung für Winterdienstfahrzeug | |
DE2929174A1 (de) | Vorrichtung zum zerkleinern und mischen von getreide, futtermittel o.dgl. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG US UZ VN YU ZA ZM |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2002778967 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 092222002 Country of ref document: AT Date of ref document: 20030424 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 92222002 Country of ref document: AT |
|
WWP | Wipo information: published in national office |
Ref document number: 2002778967 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |