EP0089460B1 - Apparatus for maintaining ski trails - Google Patents

Apparatus for maintaining ski trails Download PDF

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Publication number
EP0089460B1
EP0089460B1 EP83100656A EP83100656A EP0089460B1 EP 0089460 B1 EP0089460 B1 EP 0089460B1 EP 83100656 A EP83100656 A EP 83100656A EP 83100656 A EP83100656 A EP 83100656A EP 0089460 B1 EP0089460 B1 EP 0089460B1
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EP
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Prior art keywords
drive
planetary gears
hummock
driven
way
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EP83100656A
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German (de)
French (fr)
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EP0089460A2 (en
EP0089460A3 (en
Inventor
Hans Singer
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Priority to AT83100656T priority Critical patent/ATE21042T1/en
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    • 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 drive for a piste grooming device, with an internal combustion engine, a manual transmission and associated hydrostatic drives, each of which drives drive wheels of track chains via planetary gears.
  • a steering device for a caterpillar vehicle is known as prior art, from which the present invention is based (WO-A-81 00240).
  • a hydrostatic drive driven by the internal combustion engine is provided for each caterpillar side, which is directly connected to the third branch of the steering gear. The problem to be solved was to enlarge the range of application of such steering gears and to improve the controllability of the driving speed.
  • the state of the art also includes a drive and steering device for caterpillars, the chains of which are driven in a continuously variable manner by a drive machine via epicyclic gears with hydrostatic superimposition while switching on one or more reversing gears and a countershaft (DE-B-1 141 545).
  • a drive and steering device for caterpillars, the chains of which are driven in a continuously variable manner by a drive machine via epicyclic gears with hydrostatic superimposition while switching on one or more reversing gears and a countershaft (DE-B-1 141 545).
  • the construction effort is relatively high, since the outer central wheel is connected to the additional gear via an oil pump and an oil motor.
  • a machine for processing and cleaning ice rinks which has a motor arranged on a frame, the motor driving both processing tools and wheels (CH-A-85412).
  • This device is not suitable for use as a piste grooming device, but only for processing and cleaning ice rinks.
  • the general state of the art also includes two systems of snow groomers: First, the mechanically driven system with stepped steering. An attached hump cutter is usually driven by a separate motor. A disadvantage is the relatively poor maneuverability of the snow groomer. The hump milling machine continues to consume energy. If you drive downhill, you have to brake with the drive motor; the motor for the hump milling machine must deliver full energy.
  • the hump cutter is driven hydrostatically via an oil pump-oil motor.
  • the hydrostatic drive is less efficient than the mechanical drive. When pushing, it releases almost no energy. If you are driving downhill with a hydrostatically driven piste grooming device, the energy for the hump cutter must still be used.
  • the object of the present invention is to create, based on the prior art mentioned at the outset, a construction which makes it possible to save energy when grooming the slopes.
  • This object is achieved in that when a hump cutter is used, the thrust energy is guided downhill via the sun gears of the planetary gear to the hump cutter drive.
  • This has the advantage that the internal combustion engine is relieved when driving downhill, without the maneuverability of the piste grooming device suffering in the process.
  • an internal combustion engine 1 drives a manual transmission 3 via a friction clutch 2.
  • Variable displacement pumps 4r and 41 are driven by this manual transmission 3 with a constant transmission ratio.
  • the manual transmission 3 can be a 2-, 3- or 4-speed transmission. It can be designed with a claw shift or a powershift transmission.
  • the transmission output shaft of the manual transmission 3 drives sun gears of planetary gears 6r and 61 according to FIG. 2 via a rear axle 5 of the piste grooming device.
  • the direction of rotation for the two sun gears of the planetary gears 6r and 61 can be switched in the rear axle 5.
  • the sun gears of the two planetary gears 6r and 61 can be blocked.
  • the outer wheels of the planetary gears 6r and 61 are driven by hydraulic motors 7r and 71.
  • the planetary gears are driven via the planet gear carriers onto the drive wheels 8r and 81 of track chains.
  • the drive wheels 8r and 81 are expediently equipped with a reduction and brakes.
  • a hump milling machine 11 is driven in relation to the transmission shaft output speed. This is done via the rear axle 5 and a cardan shaft 10.
  • the locking pin 12 is engaged, the piste grooming device is driven purely hydraulically via the hydraulic motors 7r and 71.
  • Each track chain can be driven continuously forwards and backwards.
  • the share of mechanical power transmission increases in driving performance of the snow groomer.
  • the proportion of hydrostatic power transmission decreases with increasing mechanical power transmission (higher gear ratio in manual transmission 3). If the output of the gearbox 3 to the rear axle is blocked, the power transmission is purely hydrostatic.
  • the piste grooming device can then turn on its own axis. With increasing mechanical drive, a larger steering radius is advantageously possible.
  • the outer central gears of the planetary gears 6r and 61 are connected to the hydraulic motors 71 and 7r. These are connected via oil lines 9 to the variable displacement pumps 4r and 41, which in turn are driven by the manual transmission 3 via gearwheels.
  • the construction is such that the thrust energy is directed to the drive of the hump milling machine 11 when driving downhill, which relieves the load on the internal combustion engine 1 and thus achieves considerable energy savings.
  • the drive wheels 8r and 81 drive the hump milling machine 11 via the planet gear carriers and the sun wheels of the two planetary gears 6r and 61.

Abstract

1. A drive for ski-trail maintenance equipment, comprising an internal combustion engine (1), a gear-shift mechanism (3) and hydrostatic drives (7r, 7l) which are connected thereto and which in each case drive, by way of planetary gears (6r, 6l), driving wheels (8r, 8l) of caterpillar tracks, characterised in that, upon use of a hummock rotary hoe (11), the thrust energy upon descent is conducted by way of the sun wheels of the planetary gears (6r, 6l) onto the drive of the hummock rotary hoe.

Description

Die Erfindung bezieht sich auf einen Antrieb für ein Pistenpflegegerät, mit einem Verbrennungsmotor, einem Schaltgetriebe und damit verbundenen hydrostatischen Antrieben, welche jeweils über Planetengetriebe Antriebsräder von Gleisketten antreiben.The invention relates to a drive for a piste grooming device, with an internal combustion engine, a manual transmission and associated hydrostatic drives, each of which drives drive wheels of track chains via planetary gears.

Als Stand der Technik, von dem die vorliegende Erfindung ausgeht, ist eine Lenkeinrichtung für ein Raupenfahrzeug bekannt (WO-A-81 00240). Bei dieser bekannten Lenkeinrichtung ist für jede Raupenseite ein vom Verbrennungsmotor angetriebener hydrostatischer Antrieb vorgesehen, welcher mit dem dritten Zweig des Lenkgetriebes unmittelbar verbunden ist. Es war hierbei das Problem zu lösen, den Anwendungsbereich derartiger Lenkgetriebe zu vergrößern und eine Verbesserung der Regelbarkeit der Fahrgeschwindigkeit zu erzielen.A steering device for a caterpillar vehicle is known as prior art, from which the present invention is based (WO-A-81 00240). In this known steering device, a hydrostatic drive driven by the internal combustion engine is provided for each caterpillar side, which is directly connected to the third branch of the steering gear. The problem to be solved was to enlarge the range of application of such steering gears and to improve the controllability of the driving speed.

Trotz Verkoppelung von hydrostatischem und mechanischem Antrieb ist bei dieser bekannten Konstruktion der Energieaufwand relativ hoch.Despite the coupling of the hydrostatic and mechanical drive, the energy expenditure in this known construction is relatively high.

Zum Stand der Technik zählt weiterhin eine Antriebs- und Lenkeinrichtung für Gleiskettenfahrzeuge, deren Ketten von einer Antriebsmaschine über Umlaufrädergetriebe mit hydrostatischer Überlagerung unter Einschalten eines oder mehrerer Wendegetriebe und eines Vorgeleges stufenlos regelbar angetrieben werden (DE-B-1 141 545). Bei dieser bekannten Konstruktion ist der Bauaufwand relativ hoch, da das äußere Zentralrad über eine Ölpumpe und einen Ölmotor mit dem Vorgelege verbunden ist.The state of the art also includes a drive and steering device for caterpillars, the chains of which are driven in a continuously variable manner by a drive machine via epicyclic gears with hydrostatic superimposition while switching on one or more reversing gears and a countershaft (DE-B-1 141 545). In this known construction, the construction effort is relatively high, since the outer central wheel is connected to the additional gear via an oil pump and an oil motor.

Weiterhin ist eine Maschine zum Bearbeiten und Reinigen von Eisbahnen bekannt, welche einen auf einem Gestell angeordneten Motor besitzt, wobei der Motor sowohl Bearbeitungswerkzeuge als auch Laufräder antreibt (CH-A-85412). Diese Vorrichtung ist nicht zum Einsatz als Pistenpflegegerät geeignet, sondern dient nur zur Bearbeitung und Reinigung von Eisbahnen.Furthermore, a machine for processing and cleaning ice rinks is known, which has a motor arranged on a frame, the motor driving both processing tools and wheels (CH-A-85412). This device is not suitable for use as a piste grooming device, but only for processing and cleaning ice rinks.

Zum allgemeinen Stand der Technik zählen weiterhin zwei Systeme von Pistenraupen : Einmal das mechanisch angetriebene System mit Stufenlenkung. Eine angebaute Buckelfräse wird dabei üblicherweise über einen getrennten Motor angetrieben. Nachteilig ist die relativ schlechte Manövrierbarkeit der Pistenraupe. Der Motor für die Buckelfräse verbraucht weiterhin dauernd Energie. Wird bergab gefahren, muß mit dem Fahrmotor gebremst werden ; der Motor für die Buckelfräse muß volle Energie abgeben.The general state of the art also includes two systems of snow groomers: First, the mechanically driven system with stepped steering. An attached hump cutter is usually driven by a separate motor. A disadvantage is the relatively poor maneuverability of the snow groomer. The hump milling machine continues to consume energy. If you drive downhill, you have to brake with the drive motor; the motor for the hump milling machine must deliver full energy.

Eine andere Möglichkeit besteht in hydrostatisch angetriebenen Pistenpflegegeräten. Hierbei wird die Buckelfräse hydrostatisch über Ölpumpe-Ölmotor angetrieben. Der hydrostatische Antrieb hat einen schlechteren Wirkungsgrad als der mechanische Antrieb. Beim Schubantrieb gibt er fast keine Energie ab. Wird mit einem hydrostatisch angetriebenen Pistenpflegegerät talwärts gefahren, so muß die Energie für die Buckelfräse trotzdem aufgewendet werden.Another possibility is hydrostatically driven snow grooming equipment. The hump cutter is driven hydrostatically via an oil pump-oil motor. The hydrostatic drive is less efficient than the mechanical drive. When pushing, it releases almost no energy. If you are driving downhill with a hydrostatically driven piste grooming device, the energy for the hump cutter must still be used.

Beide vorgenannten Pistenraupensysteme sind energieaufwendig.Both of the aforementioned snow groomer systems are energy-intensive.

Demgegenüber besteht die Aufgabe der vorliegenden Erfindung darin, ausgehend von dem eingangs genannten Stand der Technik eine Konstruktion zu schaffen, welche es ermöglicht, bei der Pistenpflege Energie einzusparen.In contrast, the object of the present invention is to create, based on the prior art mentioned at the outset, a construction which makes it possible to save energy when grooming the slopes.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei Einsatz einer Buckelfräse die Schubenergie bei Talfahrt über die Sonnenräder der Planetengetriebe auf den Buckelfräsenantrieb geleitet wird. Dadurch ergibt sich der Vorteil, daß bei Talfahrt eine Entlastung des Verbrennungsmotors resultiert, ohne daß die Manövrierbarkeit des Pistenpflegegerätes dabei leidet. Durch die Überdeckung der Hydrostatik über die mechanischen Stufen kann stufenlos gefahren und gelenkt werden.This object is achieved in that when a hump cutter is used, the thrust energy is guided downhill via the sun gears of the planetary gear to the hump cutter drive. This has the advantage that the internal combustion engine is relieved when driving downhill, without the maneuverability of the piste grooming device suffering in the process. By covering the hydrostatic over the mechanical steps, driving and steering is infinitely variable.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben. In der Zeichnung zeigen :

  • Figur 1 eine Draufsicht auf ein Pistenpflegegerät in schematischer Darstellung ;
  • Figur 2 eine ausführlichere Darstellung der Konstruktion nach Fig. 1.
The invention is described below with reference to an embodiment shown in the drawing. The drawing shows:
  • Figure 1 is a plan view of a slope grooming device in a schematic representation;
  • FIG. 2 shows a more detailed illustration of the construction according to FIG. 1.

Nach Fig. 1 und 2 treibt ein Verbrennungsmotor 1 über eine Reibkupplung 2 ein Schaltgetriebe 3 an. Von diesem Schaltgetriebe 3 werden mit konstanter Übersetzung Verstellpumpen 4r und 41 angetrieben. Das Schaltgetriebe 3 kann ein 2-, 3-oder 4-Gang-Getriebe sein. Es kann mit Klauenschaltung oder mit Lastschaltgetriebe ausgeführt werden.1 and 2, an internal combustion engine 1 drives a manual transmission 3 via a friction clutch 2. Variable displacement pumps 4r and 41 are driven by this manual transmission 3 with a constant transmission ratio. The manual transmission 3 can be a 2-, 3- or 4-speed transmission. It can be designed with a claw shift or a powershift transmission.

Die Getriebeausgangswelle des Schaltgetriebes 3 treibt über eine Hinterachse 5 des Pistenpflegegerätes Sonnenräder von Planetengetrieben 6r und 61 nach Fig. 2 an. Die Drehrichtung für die beiden Sonnenräder der Planetengetriebe 6r und 61 kann in der Hinterachse 5 umgeschaltet werden. In Verbindung mit dem Leergang im Schaltgetriebe 3 und dem Einrasten eines Blockierstiftes 12 nach Fig. 2 können die Sonnenräder der beiden Planetengetriebe 6r und 61 blockiert werden.The transmission output shaft of the manual transmission 3 drives sun gears of planetary gears 6r and 61 according to FIG. 2 via a rear axle 5 of the piste grooming device. The direction of rotation for the two sun gears of the planetary gears 6r and 61 can be switched in the rear axle 5. In connection with the neutral gear in the manual transmission 3 and the engagement of a blocking pin 12 according to FIG. 2, the sun gears of the two planetary gears 6r and 61 can be blocked.

Die Außenräder der Planetengetriebe 6r und 61 werden von Hydraulikmotoren 7r und 71 angetrieben. Der Abtrieb der Planetengetriebe erfolgt über die Planetenradträger auf die Antriebsräder 8r und 81 von Gleisketten. Die Antriebsräder 8r und 81 werden zweckmäßigerweise noch mit einer Untersetzung und mit Bremsen ausgerüstet. Eine Buckelfräse 11 wird im Verhältnis der Getriebewellenausgangsdrehzahl angetrieben. Dies erfolgt über die Hinterachse 5 und ein Kardange-, lenk 10.The outer wheels of the planetary gears 6r and 61 are driven by hydraulic motors 7r and 71. The planetary gears are driven via the planet gear carriers onto the drive wheels 8r and 81 of track chains. The drive wheels 8r and 81 are expediently equipped with a reduction and brakes. A hump milling machine 11 is driven in relation to the transmission shaft output speed. This is done via the rear axle 5 and a cardan shaft 10.

Ist nach Fig. 2 der Blockierstift 12 eingerastet, so wird das Pistenpflegegerät rein hydraulisch über die Hydraulikmotoren 7r und 71 angetrieben. Jede Gleiskette kann stufenlos vor- und rückwärts angetrieben werden. Je nach gewählter Übersetzung im Schaltgetriebe 3 nimmt der Anteil der mechanischen Kraftübertragung an der Fahrleistung der Pistenraupe zu. Der Anteil der hydrostatischen Kraftübertragung nimmt mit zunehmender mechanischer Kraftübertragung (höhere Übersetzung im Schaltgetriebe 3) ab. Wird der Ausgang des Schaltgetriebes 3 zur Hinterachse blockiert, so erfolgt die Kraftübertragung rein hydrostatisch. Das Pistenpflegegerät kann sich dann über die eigene Achse drehen. Mit zunehmendem mechanischem Antrieb wird vorteilhafterweise ein größerer Lenkradius möglich.2, the locking pin 12 is engaged, the piste grooming device is driven purely hydraulically via the hydraulic motors 7r and 71. Each track chain can be driven continuously forwards and backwards. Depending on the gear ratio selected in the manual transmission 3, the share of mechanical power transmission increases in driving performance of the snow groomer. The proportion of hydrostatic power transmission decreases with increasing mechanical power transmission (higher gear ratio in manual transmission 3). If the output of the gearbox 3 to the rear axle is blocked, the power transmission is purely hydrostatic. The piste grooming device can then turn on its own axis. With increasing mechanical drive, a larger steering radius is advantageously possible.

Die äußeren Zentralräder der Planetengetriebe 6r und 61 sind mit den Hydraulikmotoren 71 und 7r verbunden. Diese stehen über Ölleitungen 9 mit den Verstellpumpen 4r und 41 in Verbindung, welche ihrerseits von dem Schaltgetriebe 3 über Zahnräder angetrieben werden.The outer central gears of the planetary gears 6r and 61 are connected to the hydraulic motors 71 and 7r. These are connected via oil lines 9 to the variable displacement pumps 4r and 41, which in turn are driven by the manual transmission 3 via gearwheels.

Die Konstruktion ist so getroffen, daß bei Talfahrt die Schubenergie auf den Antrieb der Buckelfräse 11 geleitet wird, woraus eine Entlastung des Verbrennungsmotors 1 und damit eine erhebliche Energieeinsparung erzielt wird. Die Antriebsräder 8r und 81 treiben hierbei über die Planetenradträger und die Sonnenräder der beiden Planetengetriebe 6r und 61 die Buckelfräse 11 an.The construction is such that the thrust energy is directed to the drive of the hump milling machine 11 when driving downhill, which relieves the load on the internal combustion engine 1 and thus achieves considerable energy savings. The drive wheels 8r and 81 drive the hump milling machine 11 via the planet gear carriers and the sun wheels of the two planetary gears 6r and 61.

Claims (1)

  1. A drive for ski-trail maintenance equipment, comprising an internal combustion engine (1), a gear-shift mechanism (3) and hydrostatic drives (7r, 71) which are connected thereto and which in each case drive, by way of planetary gears (6r, 61), driving wheels (8r, 81) of caterpillar tracks, characterised in that, upon use of a hummock rotary hoe (11), the thrust energy upon descent is conducted by way of the sun wheels of the planetary gears (6r, 61) onto the drive of the hummock rotary hoe.
EP83100656A 1982-01-25 1983-01-25 Apparatus for maintaining ski trails Expired EP0089460B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100656T ATE21042T1 (en) 1982-01-25 1983-01-25 SLOPE CARE DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202263 1982-01-25
DE19823202263 DE3202263A1 (en) 1982-01-25 1982-01-25 SLOPE MAINTENANCE DEVICE

Publications (3)

Publication Number Publication Date
EP0089460A2 EP0089460A2 (en) 1983-09-28
EP0089460A3 EP0089460A3 (en) 1984-05-23
EP0089460B1 true EP0089460B1 (en) 1986-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100656A Expired EP0089460B1 (en) 1982-01-25 1983-01-25 Apparatus for maintaining ski trails

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EP (1) EP0089460B1 (en)
AT (1) ATE21042T1 (en)
DE (2) DE3202263A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391627B (en) * 1989-05-31 1990-11-12 Anton Gutleben Method for creating a snow bridge across a crevasse and apparatus for carrying out the method
DE29607651U1 (en) * 1996-04-26 1997-08-28 Kaessbohrer Gelaendefahrzeug G Tracked vehicle
AT510621A1 (en) * 2010-10-22 2012-05-15 Acv Engineering E U LOOSE CARE INSTRUMENT FOR AGRICULTURAL VEHICLES
DE102012212248A1 (en) * 2012-07-12 2014-01-16 Kässbohrer Geländefahrzeug AG Tracked vehicle with a central drive motor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH85412A (en) * 1919-08-05 1920-06-16 Lemm Hugo Machine for processing and cleaning ice rinks.
CH131382A (en) * 1928-01-13 1929-02-15 Cameron Westman Francis Machine for milling surfaces, especially ice rinks.
DE957184C (en) * 1952-08-22 1957-01-31 Hydromatic G M B H Tracked vehicle drive
DE1141545B (en) * 1960-12-20 1962-12-20 Max Adolf Mueller Dipl Ing Drive and steering device for caterpillar vehicles
US3462548A (en) * 1965-05-13 1969-08-19 Robert M Rinder Combined writing device and computer input
AT312034B (en) * 1971-01-21 1973-12-10 Koenig Maschinen E Follow-up device for snow groomers for preparing ski slopes
DE2145772A1 (en) * 1971-09-14 1973-03-22 Fendt & Co Xaver ROLLER FOR SNOW PISTON DEVICES
DE2244385A1 (en) * 1972-09-09 1974-03-14 Fendt & Co Xaver Endless ski track clearer removes unevenness, ice and hard snow, with mallet chopper and after-roller
FR2241970A5 (en) * 1973-08-24 1975-03-21 Moteur Moderne Le Hydromechanical transmission and steering unit - has three interconnected conversion sections in hydrostatic unit
US4057916A (en) * 1975-11-17 1977-11-15 Roemer Benjamin C Snowmobile trail leveler
AT373837B (en) * 1979-07-12 1984-02-27 Tech Buero J Schreiner STEERING AND DRIVING DEVICE FOR TRACKED VEHICLES
DE2946796A1 (en) * 1979-11-20 1981-05-27 Karl Kässbohrer Fahrzeugwerke GmbH, 7900 Ulm CLEANING DEVICE FOR SNOW VEHICLES, IN PARTICULAR FOR SLOPE CARE
US4359831A (en) * 1980-05-19 1982-11-23 De Lorean Manufacturing Company Reversibly powered rotary snow tiller
DE20117227U1 (en) 2001-10-24 2003-02-27 Willmes Anlagentechnik Gmbh Press for squeezing liquid-containing substances

Also Published As

Publication number Publication date
EP0089460A2 (en) 1983-09-28
ATE21042T1 (en) 1986-08-15
DE3202263A1 (en) 1983-09-01
DE3364796D1 (en) 1986-09-04
EP0089460A3 (en) 1984-05-23

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