US3623406A - Snow compacting roller - Google Patents

Snow compacting roller Download PDF

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Publication number
US3623406A
US3623406A US6687A US3623406DA US3623406A US 3623406 A US3623406 A US 3623406A US 6687 A US6687 A US 6687A US 3623406D A US3623406D A US 3623406DA US 3623406 A US3623406 A US 3623406A
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US
United States
Prior art keywords
drum
snow
sheath
roller
over
Prior art date
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.)
Expired - Lifetime
Application number
US6687A
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English (en)
Inventor
Klaus F W Leben
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leben & Co
Leben & Co Kg Vertrieb Von Pistenpflegegeraten fur Skiabfahrten
Original Assignee
Leben & Co
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 Leben & Co filed Critical Leben & Co
Application granted granted Critical
Publication of US3623406A publication Critical patent/US3623406A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 invention relates to a roller drum adapted to be towed behind an over-snow vehicle for preparing and conditioning ski runs, whereby the snow is pressed together, so as to improve the quality of the ski run and increase its durability.
  • Known vehicles used for this purpose are usually equipped with two power driven caterpillar tracks spaced each other which serve both for propelling the vehicle and for compacting the snow.
  • the snow between the catepillar tracks is compacted by a roller drum trailed behind the vehicle.
  • caterpillar tracks used in this way for compacting snow tend to tear the snow to pieces at the same time leaving a rough surface.
  • the trailing roller drum whose purpose is to roll down the areas of snow which have not been compacted by the caterpillar tracks, that is to say the snow between the capterpillar tracks and-depending on the length of the rollon either side of the vehicle, also has to equalize the snow surface where it has been torn by the caterpillar tracks of the towing vehicle.
  • the known roller drums used for this purpose have the disadvantage that when the snow is sticky it adheres to the surface of the roller drum, preventing the formation of a smooth snow surface.
  • a flexible outer tubular sheath is stretched over a drum so that it rests in contact only over limited areas with the surface of the drum to this end, the drum is formed with projecting ribs or with domes so that any snow which adheres temporarily to the surface of the sheath falls off, due to the elastic movements of the flexible sheath.
  • the drum, intended to towed, has a length which is substantially greater than its diameter.
  • FIG. 1 is a plan view of a roller drum according to the invention
  • FIG. 2 is a cross section through a section of the roller drum
  • FIG. 3 shows a second execution form of the roller drum according to the invention
  • FIG. 4 is a cross section through a section of a still further variant of the roller drum according to the invention.
  • a roller drum 2 substantially longer than its diameter; is rotatably supported in bearings 14 in a forked 3,623,406 Patented Nov. 30, 1971 frame 1 arranged to be towed behind an over-snow vehicle.
  • the roller drum 2 comprises a hollow sheet metal cylinder 3 closed at both ends by end plates 4, which are joined to the sheet metal cylinder 3 by any suitable sealing means so that no snow can penetrate into the interior of the drum.
  • each rib 6 has a square cross section and is formed by an U-shaped channel welded along its edges to the outer surface of the hollow cylinder 3.
  • the helical ribs help to stiffen the hollow cylinder.
  • the working surface of the drum is a flexible, elastic outer skin or sheath 7, preferably made of rubber or plastic material, which comes into contact with the snow.
  • the sheath 7 is attached to the helical ribs 6-by a plurality of rivets 18.
  • the rivets are not necessary. If no rivets are used, the sheath merely rests as a tight fit on the ribs, held in place only by elastic tension.
  • the flexible sheath has the form of an elastic tube tight under tension over the ribs or other spacing means, whereby the sheath is fixed by prestressing of the sheath material.
  • the flexible, elastic sheath 7 has a certain amount of elastic freedom of movement between the ribs 6, preventing the snow from remaining adhering to the surface of the sheath, due to elastic movement of the sheath.
  • the drum shown in FIG. 3 contains projecting ribs 9 which are not helical, but extend in straight lines, axially with respect to the cylinder. This arrangement functions essentially in the same way, but does not have the same stiffening effect as the helical ribs.
  • the outwardly projecting ribs 8 could also be formed as integral parts of the drum cylinder 12, as shown in FIG. 4.
  • the ribs need not necessarily extend continuously along the drum. It is possible to provide short projections, or even merely rounded bumps projecting outwards from the surface of the cylinder, leaving spaces in between where the sheath 7 can flex resiliently. For example round or elongated domes 8 can be pressed out in the surface of the hollow cylinder 3 and distributed over the surface. It is necessary that the elastic or resilient sheath 7 has sufficient room to flex between the individual projections or domes 8, but must not be allowed to come into contact with the main outer surface 12 of the cylinder 3, in other words there must always remain hollow intermediate spaces 13.
  • the sheath 7 is sealed to the drum so that no snow can penetrate into the intermediate spaces 13, interfereing with the elastic movements of the sheath 7.
  • the tight seal between the sheath and the drum, at the two ends of the drum, can be obtained for example by means of rubber sleeves or discs or any other conventional means to close the ends of the drum and the space between the ribs to prevent snow from entering the drum or between the drum and the spaces.
  • Trailing roller adapted to be towed behind an oversnow vehicle for compacting snow and particularly for preparing and conditioning ski runs, comprising a hollow elongated drum having an axial length substantially longer than its diameter formed with projecting spacers extending from the outer circumference of the drum;
  • a flexible, resilient snow impervious sheath tube surrounding said drum to form a smooth, flexible working surface at the outside thereof, said tube being stretched over the drum and secured to the drum by tension of the elastic tube material against said projecting spacers extending from the outer circumference of the drum,
  • the spacers between the tube and the drum circumference extending over limited areas of the drum circumference so that, upon towing of said roller over a snow surface, the roller will compact snow to an essentially smooth surface and snow adhering to the outside of the sheath tube, forming the snow compacting and Working surface, falling off due to resilient movement of the tube between the projecting spacers, means at the ends of the drum to close the ends of the drum a-nd the space between the drum and the sheath tube to prevent snow from entering; and means secured to the drum to enable the roller to be towed.
  • roller drum as claimed in claim 1, wherein said tube is sealed at its ends to the drum to prevent penetration of snow between said flexible tube and said drum.
  • roller as claimed in claim 1 wherein the spacers are ribs fixed to the cylindrical wall of the hollow drum, projecting outwardly therefrom and extending substantially in axial direction from one end to the other of the drum.
  • roller as claimed in claim 3 wherein said ribs extend helically over the surface of said drum.
  • roller as claimed in claim 3 wherein said ribs extend in axial direction about said drum.
  • roller as claimed in claim 1, wherein the projecting spacers are formed as integral projections from the cylindrical wall of the drum.
  • roller as claimed in claim 1 wherein the projecting spacers are domes spaced from each other and pressed out of the cylindrical Wall of the drum.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
US6687A 1969-02-07 1970-01-29 Snow compacting roller Expired - Lifetime US3623406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691906130 DE1906130A1 (de) 1969-02-07 1969-02-07 Nachlaufwalze fuer Schneepistenpflegegeraete

Publications (1)

Publication Number Publication Date
US3623406A true US3623406A (en) 1971-11-30

Family

ID=5724612

Family Applications (1)

Application Number Title Priority Date Filing Date
US6687A Expired - Lifetime US3623406A (en) 1969-02-07 1970-01-29 Snow compacting roller

Country Status (5)

Country Link
US (1) US3623406A (de)
AT (1) AT310227B (de)
CH (1) CH518725A (de)
DE (1) DE1906130A1 (de)
FR (1) FR2033278B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783949A (en) * 1971-04-05 1974-01-08 L Maxey Snow handling apparatus
US5511901A (en) * 1994-10-25 1996-04-30 Ingersoll-Rand Company Removable padfoot shell conversion device
US5570764A (en) * 1995-02-01 1996-11-05 Roller Wheels, Inc. Roller wheel assembly
US9127428B2 (en) 2012-11-22 2015-09-08 Hamm Ag Sheathing arrangement for a soil-working roller, in particular for a self-propelled soil compactor
USD938498S1 (en) 2019-12-03 2021-12-14 Jonathan Bottema Trail grooming device
CN116335078A (zh) * 2023-04-20 2023-06-27 樊可可 一种适用于特殊地形的除雪车

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020216547B4 (de) 2020-12-23 2024-05-23 Kässbohrer Geländefahrzeug Aktiengesellschaft Heckfräse für eine Pistenraupe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783949A (en) * 1971-04-05 1974-01-08 L Maxey Snow handling apparatus
US5511901A (en) * 1994-10-25 1996-04-30 Ingersoll-Rand Company Removable padfoot shell conversion device
US5570764A (en) * 1995-02-01 1996-11-05 Roller Wheels, Inc. Roller wheel assembly
US9127428B2 (en) 2012-11-22 2015-09-08 Hamm Ag Sheathing arrangement for a soil-working roller, in particular for a self-propelled soil compactor
CZ306600B6 (cs) * 2012-11-22 2017-03-22 Hamm Ag Uspořádání obložení pro válec na zhutňování zeminy, zejména pro zhutňovač zeminy, válec na zhutňování zeminy a způsob upevňování uspořádání obložení
USD938498S1 (en) 2019-12-03 2021-12-14 Jonathan Bottema Trail grooming device
CN116335078A (zh) * 2023-04-20 2023-06-27 樊可可 一种适用于特殊地形的除雪车

Also Published As

Publication number Publication date
DE1906130A1 (de) 1971-01-21
AT310227B (de) 1973-09-25
FR2033278B1 (de) 1973-08-10
FR2033278A1 (de) 1970-12-04
CH518725A (de) 1972-02-15

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