EP2201178B1 - Rotierende schneefräse zum pflegen von skipisten - Google Patents

Rotierende schneefräse zum pflegen von skipisten Download PDF

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Publication number
EP2201178B1
EP2201178B1 EP08804172.8A EP08804172A EP2201178B1 EP 2201178 B1 EP2201178 B1 EP 2201178B1 EP 08804172 A EP08804172 A EP 08804172A EP 2201178 B1 EP2201178 B1 EP 2201178B1
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EP
European Patent Office
Prior art keywords
shaft
rotary
frame
rotary snow
tiller
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Legal status (The legal status 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 status listed.)
Active
Application number
EP08804172.8A
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English (en)
French (fr)
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EP2201178A1 (de
Inventor
Klaus Wagger
Jan Müller
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Prinoth SpA
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Prinoth SpA
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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 present invention relates to a rotary snow tiller for grooming ski slopes.
  • a rotary snow tiller for grooming ski slopes normally advances in a travelling direction, and comprises a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; and a protective casing surrounding the shaft.
  • rotary tillers wherein the shaft can be adjusted with respect to the frame in a direction transversal to the travelling direction and to the axis of the shaft.
  • Some example of rotary tiller provided with such an adjustment device are disclosed in US 5,632,106 ; FR 2,740,194 ; US 5,659,984 ; US 3,746,101 ; US 4,786,111 ; and US 5,354,147 .
  • such an adjustment device modifies not only the tilling depth but also the space between the shaft and the surrounding casing and, thus, modifies the structure of the worked snow coat, because part of the working action on the snow is achieved by circulating the snow between the shaft and the casing.
  • a rotary snow tiller for grooming the snow surface of ski slopes and designed to advance in a travelling direction
  • the rotary snow tiller comprising a frame; a shaft rotating about a first axis transverse to the travelling direction, and having teeth for breaking up the snow surface; a protective casing surrounding the shaft; and an adjusting device for selectively adjusting the position of the shaft with respect to the frame and the casing; wherein the adjusting device comprises first actuators to adjust the position of the shaft in a first direction transverse to the first axis and to the travelling direction; the rotary snow tiller being characterized in that the adjusting device comprises second actuators to adjusts the position of the shaft in a further direction substantially parallel to the travelling direction with respect to the casing.
  • Number 1 in Figure 1 indicates as a whole a rotary snow tiller for grooming the snow surface M of ski slopes, and which is towed in direction D by a snow groomer vehicle not shown in the drawings.
  • rotary snow tiller 1 provides for tilling a surface layer of snow surface M of ski slopes, and comprises a frame 2; a shaft 3 mounted to rotate with respect to frame 2 about an axis A1, and extending transverse to travelling direction D; a protective casing 4 surrounding shaft 3; a normally flexible finish mat 5 which is connected to casing 4, extends behind shaft 3, and is drawn over the surface of the tilled snow surface M; and an adjusting device 6 for adjusting the position of shaft 3 with respect to frame 2 and casing 4.
  • Frame 2 comprises a bar 7 parallel to axis A1; a hitch device 8 fixed to bar 7 and for connecting rotary snow tiller 1 to the snow groomer vehicle (not shown in the drawings); two arc-shaped segments 9 fixed to and transverse to bar 7; and two supporting bars 10 (only one shown in Figure 1 ) for supporting shaft 3.
  • Rotary snow tiller 1 comprises two adjustable panels 11 which have the purpose to protect casing 4 and finish mat 5 from the snow thrown up by the groomer vehicle not shown in the drawings.
  • Shaft 3 comprises a number of teeth 12 equally spaced about and along axis A1, and each of which projects radially from shaft 3 to penetrate snow surface M.
  • the length of shaft 3 defines the work range and the width of rotary snow tiller 1 as a whole.
  • Adjusting device 6 comprises two slides 13 (only one shown in Figure 1 ), each connected in sliding manner to a respective supporting bar 10; two further supporting bars 14, each arranged transverse to supporting bars 10 and engaging in sliding manner a respective slide 13; and two blocks 15, each fitted to the end of a respective supporting bar 14 and connected in rotary manner to a respective end of shaft 3.
  • one of blocks 15 supports a hydraulic motor 16 for rotating shaft 3 about axis A1.
  • Each slide 13 is connected to respective supporting bar 10 by an actuator 17 - which, in the Figure 1 example, is a double-acting hydraulic cylinder - and is connected to the respective further supporting bar 14 by a further actuator 18 - which, in the Figure 1 example, is also a double-acting hydraulic cylinder.
  • rotary snow tiller 1 tills a surface layer of snow surface M by hydraulic motor 16 rotating shaft 3.
  • the depth of the tilled surface layer of snow surface M depends on the position of teeth 12 and shaft 3 with respect to snow surface M.
  • Adjusting device 6 provides for adjusting the tilling depth, without altering the position of frame 2 and casing 4, by simply activating actuators 18.
  • actuators 17 moves shaft 3 in a direction parallel to travelling direction D, and provides for increasing or reducing recirculation of the tilled snow between casing 4 and shaft 3 for a given tilling depth.
  • Adjusting device 6 is replaced by an adjusting device 19, and supporting bars 10 of frame 2 are eliminated.
  • Adjusting device 19 comprises two supporting plates 20 movable with respect to frame 2; and two arms 21 mounted to rotate with respect to frame 2 about an axis A2 parallel to axis A1.
  • Each arm 21 supports a respective supporting plate 20, and is operated by an actuator 22 connected to frame 2 and to arm 20.
  • actuator 22 is a double-acting hydraulic cylinder.
  • Supporting plate 20 is mounted to slide along arm 21.
  • arm 21 engages a guide 23 formed in supporting plate 20, which is movable selectively with respect to arm 21 by an actuator 24 which, in the Figure 2 example, is a double-acting hydraulic cylinder connected to arm 21 and to supporting plate 20.
  • Figure 2 only shows one supporting plate 20, one arm 21, one actuator 22, one guide 23, and once actuator 24.
  • a hydraulic motor 25 is connected to shaft 3 and fixed to one of supporting plates 20 to rotate shaft 3 about respective axis A1.
  • adjusting device 19 provides for adjusting the tilling depth, and for adjusting the position of shaft 3 in a direction parallel to travelling direction D, to reduce the distance between shaft 3 and casing 4 on the inlet side, depending on the rotation direction of shaft 3.
  • shaft 3 can be moved forward or back, for a given tilling depth of snow surface M, to adjust the distance between shaft 3 and casing 4 and so adjust the amount of snow recirculated between casing 4 and shaft 3.
  • This adjustment by adjusting device 19 is made possible by the system of polar coordinates centered about axis A2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soil Working Implements (AREA)
  • Road Repair (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)

Claims (12)

  1. Dreh-Schneefräse zum Präparieren der Schneeoberfläche (M) von Skipisten und ausgelegt, um sich in einer Fahrtrichtung (D) vorwärtszubewegen, wobei die Dreh-Schneefräse (1) umfasst: einen Rahmen (2); eine Welle (3), die sich um eine erste Achse (A1) querverlaufend zur Fahrtrichtung (D) dreht und Zähne (12) zum Aufbrechen der Schneeoberfläche (M) von Skipisten aufweist; und ein Schutzgehäuse (4), das die Welle (3) umgibt; eine Einstellvorrichtung (6; 19) zum selektiven Einstellen der Position der Welle (3) in Bezug auf den Rahmen (2) und das Gehäuse (4); wobei die Einstellvorrichtung (6; 19) erste Stellglieder (18; 22) zum Einstellen der Position der Welle (3) in einer ersten zur ersten Achse (A1) und zur Fahrtrichtung (D) querverlaufenden Richtung umfasst; wobei die Dreh-Schneefräse (1) dadurch gekennzeichnet ist, dass die Einstellvorrichtung (6; 19) zweite Stellglieder (17; 24) zum Einstellen der Position der Welle (3) in Bezug auf das Gehäuse (4) in einer weiteren Richtung im Wesentlichen parallel zur Fahrtrichtung (D) umfasst.
  2. Dreh-Schneefräse nach Anspruch 1, dadurch gekennzeichnet, dass diese ein mit dem Rahmen (2) einstückiges Schutzgehäuse (4) umfasst.
  3. Dreh-Schneefräse nach Anspruch 2, dadurch gekennzeichnet, dass diese eine Abziehmatte (5) umfasst, die mit dem Schutzgehäuse (4) verbunden ist und nach der Welle (3) nachgelagert in Bezug auf die Fahrtrichtung (D) ist.
  4. Dreh-Schneefräse nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Rahmen (2) zwei Tragstangen (10) zum Tragen der Welle (3) umfasst; wobei die Einstellvorrichtung (6) zwei Gleitstücke (13) umfasst, die beide mit einer entsprechenden Tragstange (10) gleitend verbunden sind, und verbunden mit der Welle (3).
  5. Dreh-Schneefräse nach Anspruch 4, dadurch gekennzeichnet, dass jedes der zweiten Stellglieder (17) mit einem entsprechenden Gleitstück (13) und mit dem Rahmen (2) verbunden ist, um das entsprechende Gleitstück (13) in Bezug auf die entsprechende Tragstange (10) zu bewegen.
  6. Dreh-Schneefräse nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Einstellvorrichtung (6) zwei weitere Tragstangen (14) umfasst, die sich beide quer zu einer entsprechenden Tragstange (10) erstrecken, gleitend in ein entsprechendes Gleitstück (13) eingreift, und drehend mit einem entsprechenden Ende der Welle (3) verbunden ist.
  7. Dreh-Schneefräse nach Anspruch 6, dadurch gekennzeichnet, dass jedes der ersten Stellglieder (18) mit einer entsprechenden weiteren Tragstange (14) und einem entsprechenden Gleitstück (13) verbunden ist, um die Position der weiteren Tragstange (14) in Bezug auf das Gleitstück (13) einzustellen.
  8. Dreh-Schneefräse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Einstellvorrichtung (19) zwei bewegliche Tragstangen (20) umfasst, die drehend an der Welle (3) angebracht sind; wobei die Tragstangen (20) in Bezug auf den Rahmen (2) verstellbar sind.
  9. Dreh-Schneefräse nach Anspruch 8, dadurch gekennzeichnet, dass die Einstellvorrichtung (19) zwei Arme (21) umfasst, die mit dem Rahmen (2) verbunden sind; wobei jede Tragstange (20) gleitend mit einem entsprechenden Arm (21) verbunden ist.
  10. Dreh-Schneefräse nach Anspruch 9, dadurch gekennzeichnet, dass jeder der Arme (21) angeordnet ist, um sich in Bezug auf den Rahmen (2) um eine zweite Achse (A2) parallel zur ersten Achse (A1) zu drehen.
  11. Dreh-Schneefräse nach Anspruch 10, dadurch gekennzeichnet, dass jedes der ersten Stellglieder (22) mit einem entsprechenden Arm (21) und dem Rahmen (2) verbunden ist, um den entsprechenden Arm (21) um die zweite Achse (A2) zu drehen.
  12. Dreh-Schneefräse nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass jedes der zweiten Stellglieder (24) mit einem entsprechenden Arm (21) und einer entsprechenden Tragstange (20) verbunden ist, um die entsprechende Tragstange (20) in Bezug auf den Arm (21) zu bewegen.
EP08804172.8A 2007-09-14 2008-09-12 Rotierende schneefräse zum pflegen von skipisten Active EP2201178B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20071783 ITMI20071783A1 (it) 2007-09-14 2007-09-14 Fresa rotante da neve per la preparazione del manto nevoso delle piste da sci
PCT/EP2008/062211 WO2009034185A1 (en) 2007-09-14 2008-09-12 Rotary snow tiller for grooming ski slopes

Publications (2)

Publication Number Publication Date
EP2201178A1 EP2201178A1 (de) 2010-06-30
EP2201178B1 true EP2201178B1 (de) 2016-11-02

Family

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Application Number Title Priority Date Filing Date
EP08804172.8A Active EP2201178B1 (de) 2007-09-14 2008-09-12 Rotierende schneefräse zum pflegen von skipisten

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EP (1) EP2201178B1 (de)
IT (1) ITMI20071783A1 (de)
WO (1) WO2009034185A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20071249A1 (it) 2007-06-21 2008-12-22 Rolic Invest Sarl Rampone per cingoli di veicoli cingolati, in particolare veicoli battipista
ITMI20072096A1 (it) 2007-10-30 2009-04-30 Rolic Invest Sarl Dispositivo di collegamento fra un veicolo battipista ed un'attrezzatura per la preparazione del manto nevoso delle piste da sci e metodo di controllo impiegante tale dispositivo di collegamento
ITMI20072091A1 (it) 2007-10-30 2009-04-30 Rolic Invest Sarl Fresa rotante da neve e metodo per la preparazione del manto nevoso delle piste da sci
ITMI20072102A1 (it) 2007-10-31 2009-05-01 Rolic Invest Sarl Fresa rotante da neve per la preparazione del manto nevoso delle piste da sci
ITMI20072105A1 (it) 2007-10-31 2009-05-01 Rolic Invest Sarl Fresa rotante da neve per la preparazione del manto nevoso delle piste da sci
ITMI20081001A1 (it) 2008-05-29 2009-11-30 Rolic Invest Sarl Cingolo per veicoli battipista e veicolo battipista provvisto di tale cingolo
IT1394923B1 (it) 2009-02-18 2012-07-27 Rolic Invest Sarl Veicolo battipista comprendente un gruppo verricello di ausilio alla movimentazione del veicolo battipista lungo pendii ripidi e metodo di azionamento del gruppo verricello
IT1401157B1 (it) 2010-07-28 2013-07-12 Rolic Invest Sarl Metodo di trattamento del manto nevoso di piste da sci e attrezzatura per implementare tale metodo
IT201800003000A1 (it) * 2018-02-23 2019-08-23 Prinoth Spa Fresa da neve e relativo metodo di regolazione
IT201900002017A1 (it) 2019-02-12 2020-08-12 Prinoth Spa Fresa da neve per la preparazione di piste da sci
DE102019206459A1 (de) 2019-05-06 2020-11-12 Kässbohrer Geländefahrzeug Aktiengesellschaft Pistenraupe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746101A (en) 1971-02-01 1973-07-17 Raygo Inc Earth working machine
DE2946796A1 (de) * 1979-11-20 1981-05-27 Karl Kässbohrer Fahrzeugwerke GmbH, 7900 Ulm Nachlaufgeraet fuer schneefahrzeuge, insbesondere zur pistenpflege
US4786111A (en) 1983-09-26 1988-11-22 Zekeriya Yargici Apparatus and method for delivering liquid coolant to drum mounted cutting tools
DE9217472U1 (de) 1992-12-21 1993-02-25 Karl Kässbohrer Fahrzeugwerke GmbH, 7900 Ulm Pistenpflegevorrichtung
US5354147A (en) 1993-07-08 1994-10-11 Swisher Jr George W Pulverizing machine having a cutter assembly towed in both forward and reverse directions
US5632106A (en) 1995-08-08 1997-05-27 Lmc Operating Corp. Tiller with adjustable depth cutter and snow comb entry angle
DE19539057A1 (de) 1995-10-20 1997-04-24 Freudenberg Carl Fa Radialwellendichtring

Also Published As

Publication number Publication date
EP2201178A1 (de) 2010-06-30
ITMI20071783A1 (it) 2009-03-15
WO2009034185A1 (en) 2009-03-19

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