EP0863827B1 - Dispositif de trainage de skieurs - Google Patents
Dispositif de trainage de skieurs Download PDFInfo
- Publication number
- EP0863827B1 EP0863827B1 EP96941727A EP96941727A EP0863827B1 EP 0863827 B1 EP0863827 B1 EP 0863827B1 EP 96941727 A EP96941727 A EP 96941727A EP 96941727 A EP96941727 A EP 96941727A EP 0863827 B1 EP0863827 B1 EP 0863827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rope
- haulage
- length
- mast
- telescopic tube
- 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
Links
- 238000004904 shortening Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 230000000284 resting effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003370 grooming effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B11/00—Ski lift, sleigh lift or like trackless systems with guided towing cables only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
- B61B12/06—Safety devices or measures against cable fracture
Definitions
- the invention relates to a device for dragging people, in particular of skiers, by a cord scrolling continuously following a closed loop trajectory between starting locations and arrival, each equipped with at least one end pulley, the strand of dragging the rope being at the level of the track in order to be grabbed directly by the person and the strand back being supported in height by pylons above people.
- the invention is described below in its application to dragging of skiers, but it is clear that the person may be on skates, a sledge, a skateboard or the like.
- a known device of the kind mentioned is installed on a runway beginner skiers, especially to allow them to familiarize with the ski lifts.
- This device is complicated and the risks of accident are numerous. It requires the presence of a surveillance and restart personnel during an incident.
- a similar problem arises in parks of attraction with downhill slopes with a slight slope.
- Document US-A-3,209,703 describes a device according to the preamble of claim 1.
- the device described in this document US-A 3,209 703, in particular has the drawback of causing damage, or even cutting the rope, when safety on the ski lift is activated.
- the object of the present invention is to make available to people a simple and permanent means of transport, of the free kind service, which provides transfers to areas with low effortless and safe slope, suitable for beginners too.
- the dragging device is characterized in what the strand dragging the rope, devoid of organs of grip, rest and slide on the track and pass to the end location on an end pulley of a rope drive gearmotor, which returns the rope toward the return strand, extending above the strand dragging and that a safety device, arranged upstream of the end pulley at the arrival location detects the passage of a body and controls the stopping of the gearmotor rope training, so that this stop occurs before said body reaches the end pulley, the term upstream being defined with respect to the direction of movement of the rope.
- the strand is maintained in height when the installation is stopped, in especially at night, to avoid the burial of the rope during snowfall and facilitate maintenance of the track.
- the line pylons are equipped with hooks, for hanging the rope high or, according to a important feature, winches, allowing hooking and raising the towing strand to the top of the pylons line.
- the dragging line release detector before the pulleys guidance and training at the arrival location, is a essential element of installation security and this detector includes a template, in the form of a plate placed perpendicular to the rope and having a passage opening at weak rope play.
- the plate can wrestle freely in his plan, in all directions, to follow the transverse deflections of the dragging strand and it is kept at a predetermined distance from the end pulley by a support, allowing limited movement in the direction of this pulley, if the hand of a skier, grabbed the rope abuts the template and drives it.
- This limited displacement triggers the immediate shutdown of the strand drive motor dragging, which stop occurs before the gauge and the hand, driven by the rope, reach the end pulley.
- the template is preferably carried by a telescopic tube, in which the rope passes.
- the end of the tube, opposite the template, is articulated by a ball joint at a fixed point, neighboring from the entry point of the rope on the end pulley.
- the support and the template can thus oscillate freely in a conical volume centered on this entry point of the pulley and follow the movements of the drag line.
- the support telescopic is normally held in the extended position, for example by a breakable spring or stop and its shortening triggers the cessation of training the rope.
- the towing rope is advantageously a braided rope in polyester, which has the advantage of a low coefficient elongation and good resistance to ultraviolet rays and at break, as well as anti-twisting.
- the end pulleys are attached to end pylons above the level of the snow, especially at an adjustable height, to maintain the rope at the start and finish locations above the snow at the level of the skier's hand and thus facilitate the grip and release of the rope.
- the layout is made of such that the rope, for example at a height of one or two meters near the pylon, gradually joins the surface snow and comes to rest on it a few meters more far beyond the starting location.
- the end pylon is vertical and aligned with the trajectory of the rope and it has a small width to allow access skiers on either side of the pylon and taking the rope with the skier's left or right hand.
- Line pylons which support the return strand of the rope, in the form of a gallows, offset laterally by compared to the strand, to allow free passage of a skier gripping the strand of dragging on the side of the pylon.
- These pylons for example tubular, carry support rollers of the return strand and they are equipped with the usual safety devices, such as anti-derailers.
- the rope drive is carried by a vertical end pylon on arrival and it has a gearmotor whose shaft carries a drive pulley the rope.
- the same pylon advantageously carries the rope tension, for example a mobile counterweight along of the pylon.
- a rope 10 extends in a closed loop between a starting location 11 and ending location 12 of a device for dragging or towing skiers with 13 boots of skis.
- the strand 14 of the rope 10 rests and slides on the surface 15 of the snow and passes over pulleys end and deflection 16 carried by pylons 17,18 end, arranged respectively at the departure station 11 and arrival 12.
- the end pulleys 16 guide the rope 10, so that the return strand 19 of the cord 10 extends parallel above the strand 14, for example at a height of about five meters and that the loop of the rope 10 extends in an almost vertical plane.
- Pylon 17 to starting location 11 is a simple tubular mast vertical, which carries two end pulleys, one of which 16.1 is fixed at the top and the other 16.2 is fixed in the vicinity from the base of the pylon 17.
- These pulleys 16.1 and 16.2 are mounted idlers on horizontal axes carried by supports 20, of which that 20.2 of the basic pulley 16.2 is fixed height adjustable at pylon 17, to account for the height of the layer of snow and maintain the strand of drag 14 at a predetermined distance from the surface 15 of the snow.
- the two end pulleys 16.1, 16.2 are fixed to the pylon 17 and the loop of the rope 10 extends in a plane vertical.
- the dragging track shows a slight change in slope, so that the strand 14 coming out of the pulley base 16.2 gradually joins the surface 15 of the snow, a few meters beyond the starting location 11.
- the pylon 18 on arrival is a similar vertical mast, which carries a crown end pulley 16.3 and a pulley of base 16.4, as well as a motor device and a device voltage.
- the motor device is a geared motor 21 with a drive pulley 22, associated with the base end pulley 16.4, so that the rope 10 embraces almost all of the circumference of the driving pulley 22 and comes out vertically direction of the top of the pylon 18.
- the tensioning device is arranged at the top of the pylon 18 and it includes a counterweight 23, movable vertically along the pylon 18.
- the rope 10 passes on top of pylon 18 successively on a pulley of return 24, a muffle 25, carrying the counterweight 23 and the end pulley 16.3.
- the counterweight 23 keeps the return strand 19 stretched between the two end pylons 17,18, at a certain height and that the strand 14, is driven by the driving pulley 22 sliding on the snow.
- the basic pulley 16.4 and the geared motor 21 with the driving pulley 22 are fixed on two remote supports 35, including the height of attachment to the pylon 18 is adjustable, to take into account the thickness of the snow.
- the dragging track before the location arrival 12 a change of slope so that the rope 10 leaves the snow surface 15 and gradually deviates from this to come up to the height, for example of two meters, from the end pulley 16.4 to the right of the pylon 18.
- the skier 13 thus instinctively releases the rope 10 upon arrival.
- One or more line pylons 26 are distributed along the line to support the return strand 19 at a height sufficient not to interfere with skiers 13.
- Each pylon of line 26, in the form of a gallows, comprises a vertical mast 27, laterally offset with respect to the strand 14 and extended by a horizontal curved portion 28, which extends transversely to the line.
- the mast 27 carries hooks 31, to which the strand of drag 14 can be hung at the end of the day.
- a system more elaborate comprises a winch 41 fixed to the base of the pylon of line 26, the cable 42 of which extends and slides inside the tubular curved mast 27,28 and carries at its end, protruding of the gallows, a hook hook 43 of the dragging strand 14.
- a safety device in the form of a telescopic tube 32 is located in front of the end pulley 16.4 of the pylon end 18.
- the strand 14 goes inside the tube 32, which is fixed on the side of the pylon 18 by a joint spherical 33 to a support 34 integral with the pylon 18.
- This articulation 33 is close to the entry point of the strand of dragging 14 on the end pulley 16.4 or a system of guide at the front of this pulley 16.4, and it allows free travel of the telescopic tube 32 in a conical volume centered on articulation 33 to follow the deflections lateral and in height of the dragging strand 14.
- a template in the form of perpendicular plate 36 having a central hole 37 of passage of the rope with little play 10.
- the telescopic tube 32 is in the position shown extension and it keeps the plate 36 away from the end pulley 16.4.
- the telescopic tube 32 carries, at in the vicinity of orifice 37, a roller 39, which rests on the rope 10 and maintains the telescopic tube 32, which thus follows the travel of the rope, thanks to articulation 33.
- the rope 10 slides freely inside the tube 32.
- a stop breakable 40 or a spring holds the tube telescopic 32 in extended position, without opposing nevertheless to a shortening of the tube 32, under the action of a body gripped by the rope 10, which abuts against the plate 36 and the drive.
- This shortening of the telescopic tube 32 is detected by any suitable means, for example by the breaking of the stop 40 or the opening of a micro-contact, connected to the box electric 44, which immediately stops the gearmotor 21 and therefore the training of the rope 10.
- the assembly is arranged so that the stop occurs before the body grabbed the rope 10, in this case the skier's hand, reaches the end pulley 16.4.
- the restart is automatic, as soon as the template is released and the tube telescopic returns, under the action of the spring, to position extension or possibly requires the intervention of attendant.
- the end pylons 17,18 have hoods protection 38, which covers the accessible mobile parts, in particular the end pulleys 16.
- the operation of the dragging device emerges from the previous presentation:
- the rope 10 scrolls continuously, the strand 14 sliding on the snow 15.
- the skier 13 at the start advances, through the rear of the end pylon 17 on the left or right side thereof, towards the starting location 11 where it grasps the strand 14, clearly spaced from the surface 15 of the snow.
- the skier is dragged by the strand 14, keeping the latter raised throughout the course.
- the lifting force is low, since it essentially depends on the tensile force, which is itself low.
- the skier releases the rope 10 and moves away from the track, which can be slightly sloping.
- the strand 14 is hung on the hooks 31 or raised by the winches 41 of the line pylons 26.
- the track is thus completely clear and accessible to grooming machines and in in case of snowfall the rope 10 is not likely to be buried.
- the usual detector At the end of the runway is arranged the usual detector, which signals the passing by a skier 13 and which causes the installation to stop.
- a second security is ensured by the plate 36, which is actuated by the hand of a skier who has not released the rope 10 in time. Any risk of accident is thus excluded and the device can operate in self-service.
- a braided cord 10 is advantageously used, whose coefficient of elongation is low and whose smooth surface limits friction and wear.
- a polyester rope resists very intense ultraviolet rays in the mountains.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Ropes Or Cables (AREA)
- Vehicle Body Suspensions (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Escalators And Moving Walkways (AREA)
Description
La corde 10 défile en continu, le brin de traínage 14 glissant sur la neige 15. Le skieur 13 au départ avance, par l'arrière du pylône d'extrémité 17 du côté gauche ou du côté droit de celui-ci, vers l'emplacement de départ 11 où il saisit le brin de traínage 14, nettement espacé de la surface 15 de la neige.
Le skieur est entraíné par le brin de traínage 14, en maintenant ce dernier soulevé pendant tout le parcours. La force de soulèvement est faible, puisqu'elle dépend essentiellement de la force de traction, qui est elle-même faible. A l'emplacement d'arrivée le skieur lâche la corde 10 et s'éloigne de la piste, qui peut être en légère pente. A l'arrêt de l'installation, en fin de journée, le brin de traínage 14 est accroché aux crochets 31 ou relevé par les treuils 41 des pylônes de ligne 26. La piste est ainsi totalement dégagée et accessible aux engins de damage et en cas de chute de neige la corde 10 ne risque pas d'être ensevelie.
Le lendemain il suffit d'ajuster la hauteur des supports des poulies d'extrémité 16 et de libérer la corde 10 avant de remettre l'installation en route. En fin de piste est disposé le détecteur usuel, qui signale le dépassement par un skieur 13 et qui provoque l'arrêt de l'installation. Une deuxième sécurité est assurée par la plaque 36, qui est actionnée par la main d'un skieur n'ayant pas lâché la corde 10 à temps. Tout risque d'accident est ainsi exclu et le dispositif peut fonctionner en libre service. On utilise avantageusement une corde 10 tressée, dont le coefficient d'allongement est faible et dont la surface lisse limite le frottement et l'usure. Une corde en polyester résiste bien aux rayons ultra-violet très intenses en montagne.
Claims (10)
- Dispositif de traínage de personnes (13), notamment de skieurs, par une corde (10) défilant en continu suivant une trajectoire en boucle fermée entre des emplacements de départ (1) et d'arrivée (12), chacun équipé d'au moins une poulie d'extrémité, dans laquelle la corde (10) passe, le brin de traínage étant au niveau de la piste pour pouvoir être agrippé directement par la personne, un dispositif (32, 36) de sécurité étant disposé en amont de la poulie d'extrémité à l'emplacement d'arrivée, un dispositif (21) d'entraínement de la corde (10) étant prévu à l'emplacement d'arrivée, le dispositif d'entraínement comprenant un motoréducteur (21) associé à une poulie (16.4) d'extrémité de l'emplacement (11) d'arrivée, caractérisé en ce que le brin de traínage (14) de la corde (10) est dépourvu d'organes ou préhension, le dispositif (32, 36) de sécurité comprend un tube télescopique (32), dans lequel la corde (10) passe, et est tel que lorsqu'un corps, notamment une main, restant agrippée à la corde (10), bute contre le tube télescopique (32), un raccourcissement de ce dernier est provoqué, le dispositif de sécurité comportant un moyen (40) de détection de raccourcissement du tube télescopique, apte à provoquer, en cas de raccourcissement détecté, l'arrêt de l'entraínement de la corde.
- Dispositif de traínage selon la revendication 1, caractérisé en ce que le brin (19) de retour de la corde (10) est supporté en hauteur par des pylônes (26) au-dessus des personnes, la poulie d'extrémité (16.4) associée au motoréducteur (21) renvoie la corde (10) vers le brin de retour (19) s'étendant au-dessus du brin de traínage, la boucle de la corde (10) s'étend dans un plan sensiblement vertical et que les pylônes (26) en ligne, de support du brin de retour (19), sont équipés de moyens (31) de maintien du brin de traínage (14) en hauteur pendant les période d'arrêt, pour éviter l'ensevelissement du brin de traínage lors de chutes de neige et/ou pour faciliter l'entretien de la piste.
- Dispositif de traínage selon la revendication 2, caractérisé en ce que ledit moyen de maintien comporte un treuil (41), fixé à la base du pylône en ligne (26) et agencé pour soulever et maintenir en hauteur le brin de traínage (14) de la corde pendant les périodes d'arrêt.
- Dispositif de traínage selon la revendication 3, caractérisé en ce que ledit pylône en ligne (26) est tubulaire et que le câble (42) du treuil (41) coulisse à l'intérieur du pylône.
- Dispositif de traínage selon l'une quelconque des revendications 1 à 4 caractérisé en ce que les pylônes en ligne (26), en forme de potence, sont déportés latéralement du brin de traínage (14) pour autoriser le libre passage d'une personne agrippée au brin de traínage du côté du pylône.
- Dispositif de traínage selon l'une quelconque des revendications précédentes, caractérisé en ce que le tube télescopique (32) comporte une articulation (33) en un point fixe au voisinage du point d'entrée de la corde sur la poulie (16.4) d'extrémité à l'emplacement d'arrivée, permettant un libre débattement du tube télescopique (32) dans un volume conique centré sur l'articulation (33).
- Dispositif de traínage selon la revendication 6, caractérisé en ce que le moyen de détection comprend une butée brisable (40) ou un micro-contact.
- Dispositif de traínage selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite corde (10) est une corde tressée en polyester.
- Dispositif de traínage selon l'une quelconque des revendications précédentes, caractérisé en ce que les poulies d'extrémité (16) sont fixées à des pylônes d'extrémité (17, 18) au-dessus du niveau de la neige (15), notamment à une hauteur réglable, pour faciliter la prise de la corde (10) par les skieurs (13) et que le pylône d'extrémité (17) de l'emplacement de départ (11) est aligné avec la trajectoire de la corde et présente une faible largeur pour permettre l'accès de skieurs par la gauche et par la droite du pylône.
- Dispositif de traínage selon l'une quelconque des revendications précédentes, caractérisé en ce que le pylône d'extrémité (18) à l'emplacement d'arrivée (12) porte le motoréducteur (21) d'entraínement de la corde (10) et un dispositif de tension (23) de cette dernière.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9515200 | 1995-12-14 | ||
FR9515200A FR2742400B1 (fr) | 1995-12-14 | 1995-12-14 | Dispositif de trainage de skieurs |
PCT/FR1996/001965 WO1997021575A1 (fr) | 1995-12-14 | 1996-12-10 | Dispositif de trainage de skieurs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0863827A1 EP0863827A1 (fr) | 1998-09-16 |
EP0863827B1 true EP0863827B1 (fr) | 2000-03-29 |
Family
ID=9485750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96941727A Expired - Lifetime EP0863827B1 (fr) | 1995-12-14 | 1996-12-10 | Dispositif de trainage de skieurs |
Country Status (7)
Country | Link |
---|---|
US (1) | US6152044A (fr) |
EP (1) | EP0863827B1 (fr) |
AT (1) | ATE191186T1 (fr) |
DE (1) | DE69607479T2 (fr) |
ES (1) | ES2144795T3 (fr) |
FR (1) | FR2742400B1 (fr) |
WO (1) | WO1997021575A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2799711B1 (fr) | 1999-10-15 | 2002-01-11 | Montagner Sa | Corde comprenant des moyens complementaires de prehension |
FR2801858B1 (fr) * | 1999-12-02 | 2004-11-12 | Doppelmayr Service | Lacher sous poulie pour teleski a agres type enrouleur de corde |
FR2806688B1 (fr) * | 2000-03-22 | 2002-05-24 | Aerofun | Dispositif de freinage progressif et d'arret d'un chariot circulant sur un cable |
DE20307967U1 (de) | 2003-05-21 | 2003-07-17 | Multerer, Alfred, 83355 Grabenstätt | Transportvorrichtung |
US8607710B2 (en) * | 2010-10-28 | 2013-12-17 | Jack Farr | Cable-tow system having a stationary support cable |
US8511234B2 (en) | 2011-06-08 | 2013-08-20 | Leonard Nelson | Snow sled towing device |
US9637138B2 (en) * | 2015-05-12 | 2017-05-02 | Daniel Kathan | Towing system for towing a user on a support material |
US9637139B2 (en) * | 2015-05-12 | 2017-05-02 | Daniel Kathan | Rigid tensioning member and tension measuring device for a towing system for towing a user on a support material |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH174250A (de) * | 1934-01-06 | 1934-12-31 | Mueller Gerhard | Schleppseilbahn mit endlosem Zugorgan für Skifahrer und Schlittler. |
US3209703A (en) * | 1963-10-23 | 1965-10-05 | John P Brebner | Ski lift safety device |
FR1545566A (fr) * | 1966-10-17 | 1968-11-15 | Dispositif pour remorquer en mer des individus pratiquant le surfing | |
CH517010A (fr) * | 1969-12-23 | 1971-12-31 | Gorret Michel | Téléski |
FR2163987A5 (fr) * | 1971-12-08 | 1973-07-27 | Pomagalski Sa | |
US3809369A (en) * | 1972-12-26 | 1974-05-07 | J Elsing | Safety release apparatus |
US4920892A (en) * | 1988-11-07 | 1990-05-01 | Roman Pesek | Portable rope tow |
-
1995
- 1995-12-14 FR FR9515200A patent/FR2742400B1/fr not_active Expired - Lifetime
-
1996
- 1996-12-10 AT AT96941727T patent/ATE191186T1/de not_active IP Right Cessation
- 1996-12-10 EP EP96941727A patent/EP0863827B1/fr not_active Expired - Lifetime
- 1996-12-10 ES ES96941727T patent/ES2144795T3/es not_active Expired - Lifetime
- 1996-12-10 US US09/091,293 patent/US6152044A/en not_active Expired - Fee Related
- 1996-12-10 WO PCT/FR1996/001965 patent/WO1997021575A1/fr active IP Right Grant
- 1996-12-10 DE DE69607479T patent/DE69607479T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0863827A1 (fr) | 1998-09-16 |
WO1997021575A1 (fr) | 1997-06-19 |
US6152044A (en) | 2000-11-28 |
FR2742400A1 (fr) | 1997-06-20 |
ATE191186T1 (de) | 2000-04-15 |
DE69607479D1 (de) | 2000-05-04 |
FR2742400B1 (fr) | 1998-02-20 |
DE69607479T2 (de) | 2000-10-26 |
ES2144795T3 (es) | 2000-06-16 |
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