WO1997031158A1 - Dispositif de fraisage pour piste - Google Patents

Dispositif de fraisage pour piste Download PDF

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Publication number
WO1997031158A1
WO1997031158A1 PCT/EP1996/005475 EP9605475W WO9731158A1 WO 1997031158 A1 WO1997031158 A1 WO 1997031158A1 EP 9605475 W EP9605475 W EP 9605475W WO 9731158 A1 WO9731158 A1 WO 9731158A1
Authority
WO
WIPO (PCT)
Prior art keywords
milling
piste
shaft
slope
shafts
Prior art date
Application number
PCT/EP1996/005475
Other languages
German (de)
English (en)
Inventor
Helmut Kanzler
Gerd Friedmann
Original Assignee
Kässbohrer Geländefahrzeug Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kässbohrer Geländefahrzeug Gmbh filed Critical Kässbohrer Geländefahrzeug Gmbh
Priority to EP96942373A priority Critical patent/EP0882160A1/fr
Publication of WO1997031158A1 publication Critical patent/WO1997031158A1/fr
Priority to NO983681A priority patent/NO983681L/no

Links

Classifications

    • 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 slope milling device with a milling frame for attaching a snow groomer, wherein a milling frame is rotatably mounted at least one milling shaft having at least one milling element.
  • the milling shaft is rotatably mounted on a milling frame essentially around a horizontal axis of rotation at both ends.
  • a number of milling elements protrude radially from the milling shaft, which can be arranged, for example, in a spiral along the milling shaft.
  • the runway milling device can have, for example, two milling shafts next to one another, which are connected to a drive at their ends pointing away from one another and to a through drive at their ends facing one another.
  • the drives for the milling shaft are arranged essentially on the side surfaces of the milling frame. They can protrude laterally over the milling frame. If the slope milling device is moved by a snow groomer over a corresponding slope, the drives can be damaged by contact with obstacles on the slope or by contact with a snow groomer running in parallel. Furthermore, drives and milling shafts in the previously known runway milling device are relatively difficult to access for maintenance tasks or the like, since they are arranged relatively close to the runway in the milling frame.
  • the invention is therefore based on the object of improving the known runway milling device to such an extent that damage to the milling shaft and / or drive of the milling shaft by obstacles on the slope is largely ruled out and at the same time the ease of maintenance of the piste milling device is improved.
  • This object is achieved in a slope milling device with the feature of the preamble of claim 1 in that the milling shaft has at least one milling element on a lower end section facing a slope surface and is rotatably mounted on the frame above the lower end section.
  • the milling shaft is preferably rotatably mounted about an essentially vertical axis of rotation or about an axis of rotation inclined to the vertical. In both cases, the milling shaft with the milling element essentially forms a rotor, which loosens snow on the slope with its milling element and mixes it with, for example, fresh snow.
  • the milling shaft can be stored in its upper end section.
  • the axis of rotation is inclined forwards or backwards in the direction of travel of the piste milling device or of the piste vehicle with an inclination angle of preferably £ 45 °.
  • the corresponding milling element is pressed into the surface of the slope by the movement of the slope milling device, so that less driving force is required for the milling shaft.
  • the slope surface is relatively hard. With softer slope surfaces, the axis of rotation can also be tilted backwards.
  • a number of milling shafts are arranged next to one another in the longitudinal direction and / or in the transverse direction of the slope milling device.
  • the inclination of the individual axes of rotation can be different, as a result of which, for example, a different displacement of the milled parts of the slope surface can be achieved.
  • the milling elements can be designed differently on the milling shafts arranged next to one another.
  • the milling shafts in the transverse direction in at least two rows offset from one another in the longitudinal direction.
  • the milling shafts arranged in the longitudinal direction in the rear row can more finely crumble the snow roughly crushed by the milling shafts of the front row. Accordingly, the milling elements or milling tools can be designed differently.
  • milling shafts of two rows adjacent in the longitudinal direction are arranged on a gap.
  • the snow shifted laterally to the direction of travel by the milling shafts of the front row is better fed to the milling shafts of the rear row.
  • the milling shafts of each row can be turned in different directions.
  • the direction of rotation can change from one milling shaft to another along a row.
  • the outermost milling shafts can rotate in the opposite direction to the milling shafts lying between them.
  • the milling shafts of a row can be rotated in the same direction of rotation.
  • each milling shaft can be vertically adjustable and / or pivotable about a horizontal axis. Due to the vertical adjustability, the working depth of the milling element can be adjusted. By pivoting the milling shaft, for example, the distance between milling shafts in adjacent rows can be set.
  • an individual drive can be assigned to each milling shaft.
  • the milling shafts arranged in the middle of each row can rotate faster or slower than the milling shafts arranged at the ends of the corresponding row. It is also possible to
  • a compound drive can be assigned to a number of milling shafts for their common drive.
  • such a compound drive is assigned to the milling shafts with the same direction of rotation.
  • a speed gradation of the milling shafts is nevertheless possible if, for example, appropriate gear ratios or gear ratios are formed between the composite drive and the milling shafts. It is also possible to provide a drive motor for all milling shafts even with different directions of rotation.
  • an arrangement of the milling elements is arranged in pairs opposite one another in the lower end section of the milling shaft.
  • three, four or more milling elements can be arranged on the milling shaft.
  • the milling elements can also be arranged in different height positions on the milling shaft.
  • a simple exemplary embodiment of a milling element is characterized in that it is essentially reversely L-shaped, a first L-leg projecting essentially radially from the milling shaft and a second L-leg essentially parallel to the milling shaft in the direction of the slope surface.
  • the lower end section of the milling shaft is approximately fork-shaped. Both forks serve as milling elements and can intervene in the slope surface.
  • the milling elements are arranged directly at the lower end of the milling shaft, so that the first L-leg protrudes laterally from this lower end. It is also possible, for example, to arrange two pairs of milling elements at different heights and offset from one another on the lower end section of the milling shaft.
  • milling elements of at least next-adjacent milling shafts interlock when they rotate. This means that the milling elements of one milling shaft precisely engage in the gaps between the milling elements of the adjacent milling shaft during their rotation. In this way, a particularly fine crumbling and loosening of the slope surface is achieved.
  • a releasable attachment of a smoothing device, such as a finisher, to the rear of the milling frame is advantageous in order to level and compact the finely crumbled and loosened snow on the slope surface to restore a flat slope surface.
  • a smoothing roller or the like can also be used, for example.
  • a slope tear-open device can be adjustably mounted on a front side of the milling frame between a ready position and a working position.
  • a piste ripping device is known for example from DE 29500818.
  • the piste ripping device can comprise corresponding ripping teeth rotatably mounted on a shaft or a toothed strip arranged at one end of a bearing arm, upper ends of the bearing arm being pivotably mounted on the milling frame.
  • the piste ripping device can have a notching device, by means of which the toothed strip is released for pivoting it in the direction of travel backwards about a pivot bearing on the bearing arm.
  • the slope is first torn open, ventilated and mixed old and new snow by the piste ripping device. Subsequently, the chunks similar to rotor with milling elements are used to finely crumble and level the chunks, some of which are still roughly chopped up by the piste ripper, with the subsequent smoothing device brushing the snow thus prepared into a compacted piste surface.
  • the milling elements can be adjustable in their working depth and / or their inclination relative to the milling shaft. To simplify the exchange of damaged or worn milling elements, they can be detachably attached to the milling shaft. Further possible variations result from different lengths and / or widths and / or shapes of the milling elements both on a milling shaft and in comparison to milling elements of adjacent milling shafts. For example, it can be advantageous if the milling elements run in a cutting shape at their front edge in the direction of rotation, so that crushing and milling the slope surface is facilitated.
  • the milling elements of a rear row of milling shafts rearward in the direction of travel can be designed with a greater length in order to engage more deeply in the slope surface loosened by the milling elements of the front row of milling shafts.
  • the slope milling device according to the invention can also have, for example, a number of subunits which are arranged next to one another, in front of one another or offset from one another.
  • Each subunit has a number of milling shafts with corresponding milling elements.
  • the subunits can, for example, be suspended from a superordinate frame of the runway milling device.
  • the superordinate frame of the runway milling device or the milling frame of each subunit can appropriately have a shape formed from a steel construction, aluminum profile construction or from composite materials such as plastics.
  • FIG. L is a basic side view of a slope milling device
  • FIG. 2 shows a top view of the slope milling device according to FIG. 1.
  • FIG. 1 shows a side view of a piste milling device 1 according to the invention.
  • a corresponding snow groomer and a connecting frame for attaching the snow groomer to this vehicle are not shown.
  • the runway milling device 1 has a milling frame 2 which has a substantially horizontally extending part and a part which adjoins the latter in the direction of travel 9 and is inclined obliquely downwards and backwards.
  • milling shafts 4 are rotatably mounted in the horizontal part of the milling frame 2.
  • Each of the milling shafts 4 has two opposite milling elements 3 in its lower end section 5. These are essentially inverted L-shaped, with a first L-leg 19 projecting approximately radially from the lower end 30 of the milling shaft 4 and the adjoining second L-leg 20 running approximately parallel to the vertical axis of rotation 7 of the milling shaft 4.
  • inclined axes of rotation 8 which are inclined by an angle of inclination 10 with respect to a vertical or vertical axis of rotation 7, can be used, as shown in broken lines in FIG. 1.
  • milling shafts 4 can be rotated about the inclined axes of rotation 8 in another exemplary embodiment.
  • the milling elements 3 according to FIG. 1 are of identical design with regard to their shape, length 32 of the second L-legs 20, length of the first L-legs 19, width or thickness of the L-legs 19 or 20.
  • the lower ends of the second L-leg engage in a slope surface 6, on which a smoothing device 22 rests on the rear side 21 of the milling frame 2.
  • the milling shafts 4 located at the front in the direction of travel 9 rotate in the direction of rotation 15, that is to say in the counter-clockwise direction in the exemplary embodiment shown.
  • the rear milling shafts 4 rotate in the direction of travel 9.
  • a piste ripping device 24 is adjustably mounted between a ready position 25 indicated by dashed lines and the fully illustrated working position 26.
  • the piste ripping device 24 comprises a bearing arm 27 and a toothed strip 28 arranged at its lower end 31.
  • An upper end 29 of the bearing arm 27 is pivotably mounted on the front side 23 of the milling frame 2.
  • FIG. 2 shows a top view of the slope milling device according to FIG. 1.
  • a number of milling shafts 4 with milling elements 3, see also FIG. 1, are arranged in a first front row 13 in the transverse direction 12 of the runway milling device 1 or in the horizontal direction 17.
  • a second rear row 14 with further milling shafts 4 and milling elements 3 is arranged further back in the direction of travel 9 or in the longitudinal direction 11 of the runway milling device 1.
  • the first row 13 has three milling shafts and the second row 14 has four milling shafts.
  • the milling shafts of the two rows are arranged in a gap, the milling shafts 4 with milling elements 3 of the first row 13 and the second row 14 being partially inserted into the gaps between the milling shafts 4 with milling elements 3 of the respective other rows 14 and 13.
  • the milling shafts 4 of the first row 13 all rotate in the same direction of rotation 15, that is to say counterclockwise.
  • the auger shafts of both the first and the second row 3 1, 14 all have a vertical axis of rotation. 7
  • the piste ripping device 24 is shown in a top view.
  • the associated toothed strip 28 extends essentially over the same working width as that of the milling shafts arranged in the two rows 1 3 and 14. Which is arranged on the rear side of the miller frame 2 smoothness device 22 has demumbleü he b a larger working width.
  • the piste milling device 1 can also be constructed from a plurality of subunits analogous to FIGS. 1 and 2. These sub-units also have milling frames 2 , milling elements 3 , milling shafts 4 and the like. Each subunit can be attached to a frame of the übergeor d Neten Pistenfräsvortechnisch. 1 For example, each subunit can be obtained by its own context to the parent context commute be mounted d. The overarching framework is used to to b au t he entire Pistenfräsvortechnisch to a groomer.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
  • Shovels (AREA)

Abstract

L'invention concerne un dispositif de fraisage pour piste comportant un bâti de fraisage (2) se fixant sur un engin de piste. Au moins un arbre de fraisage (4) possédant au moins un élément de fraisage (3) est monté rotatif sur le bâti de fraisage (2). Pour empêcher autant que possible que l'arbre de fraisage (4) soit endommagé et/ou entraîné par des obstacles sur la piste, et en même temps pour faciliter la maintenance du dispositif décrit, l'arbre de fraisage (4) comprend au moins un élément de fraisage (3) sur une section terminale inférieure faisant face à une surface de piste et est monté sur le bâti de fraisage (2) de manière à être rotatif au-dessus de la section terminale.
PCT/EP1996/005475 1996-02-20 1996-12-06 Dispositif de fraisage pour piste WO1997031158A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96942373A EP0882160A1 (fr) 1996-02-20 1996-12-06 Dispositif de fraisage pour piste
NO983681A NO983681L (no) 1996-02-20 1998-08-11 Roterende snöfreser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29602941U DE29602941U1 (de) 1996-02-20 1996-02-20 Pistenfräsvorrichtung
DE29602941.6 1996-02-20

Publications (1)

Publication Number Publication Date
WO1997031158A1 true WO1997031158A1 (fr) 1997-08-28

Family

ID=8019733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/005475 WO1997031158A1 (fr) 1996-02-20 1996-12-06 Dispositif de fraisage pour piste

Country Status (4)

Country Link
EP (1) EP0882160A1 (fr)
DE (1) DE29602941U1 (fr)
NO (1) NO983681L (fr)
WO (1) WO1997031158A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013106B (de) * 1952-06-11 1957-08-01 Francesco Civello Dr Ing Bodenbearbeitungsgeraet mit rotierenden Werkzeugen
DE1807202A1 (de) * 1967-11-24 1969-06-19 Lely Nv C Van Der Bodenbearbeitungsmaschine
FR2188000A1 (fr) * 1972-06-12 1974-01-18 Heise Alfelder Eisen
CH548782A (de) * 1972-03-15 1974-05-15 Maurer Wilhelm Verfahren zum bearbeiten von bestehenden skipisten, insbesondere im huegeligen gelaende, sowie fahrzeug zur ausfuehrung des verfahrens.
FR2370824A1 (en) * 1976-11-15 1978-06-09 Martin Rene Surface conditioner for compacted ski slopes - has hydraulic motor driven rotary teeth mounted on line of vertically reciprocated breaker arms
FR2442300A1 (fr) * 1978-11-24 1980-06-20 Kempf & Co Ag Appareil pour la mise en etat de pistes de neige comportant un decapeur pouvant pivoter
EP0287897A1 (fr) * 1987-04-21 1988-10-26 The Logan Manufacturing Company Appareil tournant flexible pour travailler la neige
DE9217472U1 (fr) * 1992-12-21 1993-02-25 Karl Kaessbohrer Fahrzeugwerke Gmbh, 7900 Ulm, De
EP0663474A1 (fr) * 1994-01-18 1995-07-19 Gebr. Zaugg AG Procédé pour travailler une couche de neige ou de glace

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013106B (de) * 1952-06-11 1957-08-01 Francesco Civello Dr Ing Bodenbearbeitungsgeraet mit rotierenden Werkzeugen
DE1807202A1 (de) * 1967-11-24 1969-06-19 Lely Nv C Van Der Bodenbearbeitungsmaschine
CH548782A (de) * 1972-03-15 1974-05-15 Maurer Wilhelm Verfahren zum bearbeiten von bestehenden skipisten, insbesondere im huegeligen gelaende, sowie fahrzeug zur ausfuehrung des verfahrens.
FR2188000A1 (fr) * 1972-06-12 1974-01-18 Heise Alfelder Eisen
FR2370824A1 (en) * 1976-11-15 1978-06-09 Martin Rene Surface conditioner for compacted ski slopes - has hydraulic motor driven rotary teeth mounted on line of vertically reciprocated breaker arms
FR2442300A1 (fr) * 1978-11-24 1980-06-20 Kempf & Co Ag Appareil pour la mise en etat de pistes de neige comportant un decapeur pouvant pivoter
EP0287897A1 (fr) * 1987-04-21 1988-10-26 The Logan Manufacturing Company Appareil tournant flexible pour travailler la neige
DE9217472U1 (fr) * 1992-12-21 1993-02-25 Karl Kaessbohrer Fahrzeugwerke Gmbh, 7900 Ulm, De
EP0663474A1 (fr) * 1994-01-18 1995-07-19 Gebr. Zaugg AG Procédé pour travailler une couche de neige ou de glace

Also Published As

Publication number Publication date
NO983681L (no) 1998-09-24
DE29602941U1 (de) 1997-06-26
NO983681D0 (no) 1998-08-11
EP0882160A1 (fr) 1998-12-09

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