EP1832490B1 - Seilklemme für Träger einer automatischen Seilbahninstallation - Google Patents

Seilklemme für Träger einer automatischen Seilbahninstallation Download PDF

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Publication number
EP1832490B1
EP1832490B1 EP20060077159 EP06077159A EP1832490B1 EP 1832490 B1 EP1832490 B1 EP 1832490B1 EP 20060077159 EP20060077159 EP 20060077159 EP 06077159 A EP06077159 A EP 06077159A EP 1832490 B1 EP1832490 B1 EP 1832490B1
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EP
European Patent Office
Prior art keywords
haulage cable
jaws
installation according
trolley
cable
Prior art date
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Active
Application number
EP20060077159
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English (en)
French (fr)
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EP1832490A3 (de
EP1832490A2 (de
Inventor
Ferruccio Levi
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High Technology Industries SpA
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High Technology Investments BV
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Priority claimed from ITMI20052336 external-priority patent/ITMI20052336A1/it
Priority claimed from ITMI20060069 external-priority patent/ITMI20060069A1/it
Application filed by High Technology Investments BV filed Critical High Technology Investments BV
Publication of EP1832490A2 publication Critical patent/EP1832490A2/de
Publication of EP1832490A3 publication Critical patent/EP1832490A3/de
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Classifications

    • 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
    • B61B12/12—Cable grippers; Haulage clips
    • B61B12/122—Cable grippers; Haulage clips for aerial ropeways

Definitions

  • the present invention refers to an automatic cableway installation with a clamping system for carriers wherein the automatic cableway installation is of the type equipped with two carrying cables and one haulage cable.
  • the installations of this type are known among technicians with the initials 3S; the two carrying cables are usually parallel and at the same height, with a transverse distance between them typically in the range of 60-100 cm; the running cable is usually in the mid-plane between the two carrying cables, at a slightly lower height.
  • the carriers rest on the carrying cables by means of suitable trolleys, and are bound to the haulage cable which drives it by moving it at a constant speed (typically 6-8 m/sec); when a carrier reaches a terminal or intermediate station, suitable mechanisms release the trolley from the haulage cable, to slow the carrier, to stop it or to make it move at low speed at the unloading or loading zone, and then to accelerate it and bind it once again with the haulage cable.
  • a constant speed typically 6-8 m/sec
  • suitable mechanisms release the trolley from the haulage cable, to slow the carrier, to stop it or to make it move at low speed at the unloading or loading zone, and then to accelerate it and bind it once again with the haulage cable.
  • the trolleys of the carrier normally leave the carrying cables and transit on suitably-shaped rigid rails.
  • Cable installations are typically used as ski-lifts on mountain lines with considerable slope; however, for practical reasons, the acceleration and deceleration of the carriers in the stations occurs on rails arranged flat or with little slope; normally, at the exit of at least one of the stations, a more or less accentuated concavity is therefore present which requires the presence of deflection rollers placed atop the haulage cable to keep it parallel to the carrying cables and to the sliding rails of the carriers.
  • clamping means are composed of support trolleys on the carrying cables and connection vices to the haulage cable; on the other hand, these being installations of heavy type characterised by the presence of carriers of considerable mass (typically 6000 kg), the forces in play for making the trolleys integral with the haulage cable and for manoeuvring the vices are very high.
  • the trolley moves on the line supports, it is obliged to lift the haulage cable from its bases on the support, and this generates additional forces in the trolley which can also be much greater than those due to the weight of the loaded carrier.
  • Document EP 283,888 A2 discloses an automatic cableway installation with a clamping system for carriers or telphers, wherein the installation has at least two carrying cables and at least one haulage cable and the clamping system comprises a trolley provided with carrying wheels for the support on the carrying cables, at least one vice for clamping the trolley to the haulage cable, a suspension arm bound to such trolley, in turn connected with a suspension strut for the support of the carrier or the telpher.
  • the vice comprises two jaws which rotate in a symmetrical manner with respect to the entrance plane of the haulage cable, which enters between the jaws from the upper side.
  • the jaws are hinged another and include two respective arms arranged on one side of the trolley with a spring arranged between them to keep the jaws in the closed position. According to this configuration the cam deputed to come into contact with the arms for opening the jaws induced a further unbalance to the trolley, which is already unbalanced due to the asymmetrical arrangement.
  • Each elastic is defined by a torsion connecting a jaw to the a frame parallel to the haulage cable.
  • Object of the present invention is that of making an automatic cableway installation with a clamping system equipped with a trolley and vices with suitable characteristics, so to satisfy the contrasting functional needs, permit simplifying the geometry of the terminal stations, and permit reducing the dynamic effects for the passengers and for the structures during the station manoeuvres.
  • an automatic cableway installation with a clamping system for carriers or telphers having at least two carrying cables and at least one haulage cable and the clamping system comprising a trolley provided with carrying wheels for the support on the carrying cables, at least one vice for clamping the trolley to the haulage cable, a suspension arm bound to such trolley, in turn connected with a suspension strut for the support of the carrier or the telpher; the vice comprising two jaws which rotate in a symmetrical manner with respect to the entrance plane of the haulage cable, which is clamped; wherein the haulage cable enters between the jaws from the upper side; the installation being characterised by comprising two distinct elastic systems, each acting on one of said jaws, arranged in a substantially symmetric manner with respect to said symmetry plane so as to provide the clamping force of said jaws on the haulage cable; each elastic system being articulated in the lower point to a fixed structure, and in the upper point to a respective the jaw.
  • the clamping means of the carriers to the cableway installation comprise a trolley equipped with connection vices preferably comprising eight carrying wheels 1 intended to slide on carrying cables 12, coupled in four equalisers 2, in turn articulated to the ends of a rigid rectangular frame 3; the articulation of each equaliser with the frame permits a limited rotation in the plane of the wheels, but does not permit a rotation with regard to the horizontal plane (steering).
  • the rigid frame 3 is formed by two longitudinal members 4, two external crossbars 5 and by four internal crossbars 6.
  • the external crossbars 5 are placed near the articulations of the equalisers 2, while the inner crossbars 6 support the mentioned vices 7 of connection to the haulage cable 11.
  • a suspension arm 8 is articulated between the two more internal crossbars 6, through a pin 9 or an equivalent device placed at a height slightly lower than that of said cables; said two vices are arranged symmetric with respect to said suspension arm, along an axis parallel to the carrying cables.
  • auxiliary wheels 10 are positioned, equipped with only one flange, used to permit the movement of the carrier on the curved station rails.
  • the auxiliary wheels are arranged inside, between the carrying cables, at a height such that the support plane on the rails is slightly lower than the carrying cables and slightly higher than the lower edge of said crossbars.
  • the auxiliary wheels are equipped with flange only on the internal side towards the haulage cable.
  • the trolley is illustrated at the passage over a line support; in the figure the position is recognised regarding the carrying wheels 1, carrying cables 12, haulage cable 11, auxiliary wheels 10, and suspension arm 8 in vertical position; the figure then shows the schematisation of a symmetrical vice 7 according to the present invention as illustrated in detail in the subsequent figures and the position of the friction blocks 15, used for dragging the carriers along the rails and the curves of the stations.
  • the particular shape of the trolley according to the invention permits the haulage cable 11 to pass under the holding rollers 13 without interferences with the vices 7, and to pass over the support rollers 14 with a limited lifting of the same haulage cable.
  • the trolley is shaped such to permit the transit at rollers placed atop the haulage cable, without said rollers coming into contact with any part of the trolley or vices installed on the trolley.
  • the possible transverse oscillations of the suspension arm 8 are illustrated, along with the position of the articulation pin 16 between the suspension arm 8 and the suspension strut 17; to subdivide the weight of the carrier in an optimal manner over the carrying wheels, such pin 16 must be at a height close to that of the haulage cable 11.
  • the geometrical arrangement of the various elements of the trolley permits the insertion of guide elements 18 at the support rollers 14, capable of correctly positioning the haulage cable 11 in the groove of the rollers 14, also in the case of an irregular lateral movement after the lifting.
  • the haulage cable 11 is then maintained substantially rectilinear in the section comprised between the external crossbars 5 of the rigid frame 3; when the trolley passes on the line supports and lifts the haulage cable, the deflection of such cable predominantly occurs on the same crossbars 5, which transmit the corresponding load directly onto the carrying wheels 1, without straining the other elements of the trolley.
  • Said vices are aligned with each other and with said external crossbars so that when the trolley lifts the haulage cable at the passage over the line supports, said haulage cable sustains most of the deflection by being based on said two external crossbars and little or no deflection on said four internal crossbars.
  • Figure 4 shows a transverse view of the trolley with the trolley in a terminal station during the manoeuvre of the vice.
  • the haulage cable 11 necessarily sustains an upward concave curving due to the holding rollers 13;
  • the symmetrical-opening vices 7, preferably functioning without dead centre, are driven by a cam 19 which generates a system of forces in the trolley with no horizontal resultant and with limited and stabilising vertical resultant;
  • the carriers can be moved in the station by means of wheels 20 which act on the friction blocks 15;
  • the shape of the trolley and of the vices permits drawing the mechanical power necessary for the dragging by the same holding rollers 13, for example by means of trapezoidal belts 21.
  • the carrying wheels 1 in the rectilinear path in the stations rest on sliding rails 23 and the auxiliary wheels 10, in the curved paths, rest on auxiliary rails 22.
  • the same auxiliary rails 10 can be used for the paths in the storage rails.
  • the vice 7 is perfectly symmetrical with respect to a vertical plane; it is formed by two jaws 71, each articulated with a fixed structure 76 in a pin 72.
  • the jaws 71 clamp the cable 11 under the action of two elastic systems 75.
  • the pins 72 have axis substantially parallel to the haulage cable, and are placed near said symmetry plane and axis of the haulage cable, and are arranged in a substantially symmetric manner with respect to said plane.
  • the clamping force of said jaws on the haulage cable is provided by two distinct elastic systems, each acting on one of said jaws, arranged in a substantially symmetric manner with respect to said plane of symmetry.
  • each elastic system is articulated in the lower point 74 with the fixed structure 76, and with the jaw 71 in the upper point 73; in the jaw 71, the driving arm of the elastic system 75 with respect to the lower pin 72 is much greater than that of the haulage cable 11, and therefore the clamping force between the jaws and the cable is much greater than the force generated by the same elastic system.
  • the articulation between the jaws 71 and the fixed structure 76 occurs through the pins 72 and a certain number of auxiliary horizontal connecting rods 77 which receive part of the horizontal reaction of the clamping force, and compensate it between the jaws 71 without affecting the fixed structure 76; moreover, the connecting rods increase the number of cut sections which affect the pins 72, permitting the reduction of the diameter and thus size of the vice below the haulage cable 11.
  • FIG 7 an embodiment is shown of the present invention in which between the two jaws 71 there is a gear tooth 713 which obliges the jaws to always move symmetrically, even in the presence of an asymmetric load of the two elastic systems 75, for example due to the yielding of a spring.
  • the figure shows a gear tooth with bidirectional functioning; according to an alternative of the invention, not shown in the figures, the single bidirectional gear tooth is substituted by two unidirectional contact surfaces, placed on both sides of the jaw, adjacent to the two ends of the pins 72, made such to activate one contact surface or the other according to the direction of the stress imbalance.
  • Figure 8 shows a variant of the invention, in which the elastic system 75 is connected to the pin 73 of the jaw 71 with the interposition of an intermediate kinematic mechanism capable of resolving the force provided by the elastic system 75 by optimising the variation of the clamping force on the cable 11 as a function of the jaw rotation.
  • the component of the elastic force which does not affect the jaw is discharged on the fixed structure 76.
  • a first resolution system illustrated in the left part of the figure, is obtained with an upper pin 717, in which two connecting rods 714 and 715 converge which connect the elastic system 75 respectively at the jaw 71 through the pin 73 and the fixed body 76 through the pin 716.
  • a second resolution system illustrated in the right part of the figure, is obtained by substituting the connecting rod 715 with a surface of sliding or rolling by direct contact 718, which accomplishes the same function of the connecting rod; other systems, not represented in the figure, can instead foresee the use of sliding or rolling surfaces in place of the connecting rod 714, or at the place of both connecting rods.
  • the elastic system 75 is composed of two systems of helical springs 751 and 752 arranged symmetrically on both sides of each jaw 71.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Claims (14)

  1. Automatische Seilbahnanlage mit einem Klemmsystem für Seilbahnkabinen oder -gondeln, wobei die Anlage mindestens zwei Tragseile (12) und mindestens ein Zugseil (11) aufweist und das Klemmsystem umfasst: einen mit Laufrädern versehenen Wagen zur Lagerung an den Tragseilen, mindestens eine Zwinge zum Klemmen des Wagens an das Zugseil, einen mit einem solchen Wagen verbundenen Tragarm (8), der wiederum mit einer Tragstrebe (17) zur Lagerung der Seilbahnkabine oder -gondel verbunden ist; wobei die Zwinge zwei Backen umfasst, die in symmetrischer Weise bezüglich der Eintrittsebene des Zugseils, das geklemmt wird, drehen; wobei das Zugseil (11) von der oberen Seite zwischen die Backen tritt; wobei die Anlage dadurch gekennzeichnet ist, dass sie zwei getrennte elastische Systeme (75) umfasst, wobei jedes auf eine der Backen wirkt, wobei sie in einer im Wesentlichen symmetrischen Weise bezüglich der Symmetrieebene angeordnet sind, um die Klemmkraft der Backen an dem Zugseil (11) vorzusehen; wobei jedes elastische System in dem unteren Punkt (74) an einer feststehenden Struktur (76) des Wagens und in dem oberen Punkt an einer jeweiligen Backe angelenkt ist.
  2. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass jede der Backen der Klemme mittels eines Zapfens mit einer Achse im Wesentlichen parallel zu dem Zugseil und nahe der Symmetrieebene und der Achse des Zugseils angeordnet mit der feststehenden Lagerungsstruktur einzeln angelenkt ist, wobei die beiden Zapfen in einer im Wesentlichen symmetrischen Weise bezüglich der Ebene angeordnet sind.
  3. Anlage nach Anspruch 2, dadurch gekennzeichnet, dass die Backen an den zwei Zapfen durch anderen Vorrichtungen miteinander verbunden sind, die als Zuganker fungieren, die die zwischen den Backen ausgetauschten symmetrischen Kräfte absorbieren und kompensieren können.
  4. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass sich zwischen den zwei Backen (71) ein Zahn (713) befindet, der die Backen zwingt, sich immer symmetrisch zu bewegen, selbst bei Vorhandensein einer Lastasymmetrie der zwei elastischen Systeme (75).
  5. Anlage nach Anspruch 4, dadurch gekennzeichnet, dass der Zahn eine bidirektionale Funktionsweise hat.
  6. Anlage nach Anspruch 4, dadurch gekennzeichnet, dass der Zahn aus zwei unidirektionalen Kontaktflächen besteht, die so ausgelegt sind, dass entsprechend der Richtung des Spannungsungleichgewichts eine Kontaktfläche oder die andere aktiviert wird.
  7. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass der Wagen einen feststehenden starren Rahmen, mit dem vier Ausgleichselemente (2) verbunden sind, jedes mit zwei Tragrädern (1) für die Lagerung an dem Tragseil (12), zwei symmetrische Antriebszwingen (7) zur Verbindung mit dem Zugseil (11), vier Hilfsräder (10) für die Durchfahrt auf den gebogenen Stationsschienen umfasst.
  8. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass der starre Rahmen (3) durch zwei Längselemente (4), zwei Außenquerbalken (5) und vier Innenquerbalken (6) gebildet ist, wobei die Außenquerbalken nahe den Gelenkverbindungen der Ausgleichselemente (2) positioniert sind, während die Innenquerbalken die erwähnten Zwingen der Verbindung mit dem Zugseil und dem Spannsystem des Tragarms (8) lagern.
  9. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass die zwei Zwingen bezüglich des Tragarms entlang einer Achse parallel zu den Tragseilen symmetrisch angeordnet sind.
  10. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass die Zwingen zueinander und zu den Außenquerbalken ausgerichtet sind, so dass, wenn der Wagen das Zugseil bei dem Durchlaufen an den Bahnstützen anhebt, das Zugseil den Großteil der Ablenkung beruhend auf den zwei Außenquerbalken und wenig oder keine Ablenkung an den vier Innenquerbalken trägt.
  11. Anlage nach Anspruch 7, dadurch gekennzeichnet, dass die Hilfsräder innen zwischen den Tragseilen bei einer solchen Höhe angeordnet sind, dass die Lagerungsebene an den Schienen etwas niedriger als die Tragseile und etwas höher als die untere Seite der Querbalken ist.
  12. Anlage nach Anspruch 11, dadurch gekennzeichnet, dass die Hilfsräder nur an der Innenseite hin zu dem Zugseil mit einem Flansch ausgestattet sind.
  13. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass die Tragstrebe (17) mit einem Zapfen (16), der in etwa bei der gleichen Höhe wie das Zugseil (11) positioniert ist, an dem Tragarm (8) angelenkt ist.
  14. Anlage nach Anspruch 1, dadurch gekennzeichnet, dass das Klemmsystem des Tragarms (8) zu dem Wagen aus einem Zapfen (9) besteht, der parallel zu dem Zugseil (11) ist und bei einer Höhe etwas niedriger als die des Kabels positioniert ist.
EP20060077159 2005-12-06 2006-12-29 Seilklemme für Träger einer automatischen Seilbahninstallation Active EP1832490B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20052336 ITMI20052336A1 (it) 2005-12-06 2005-12-06 Morsa speciale per impianto funiviario dotato di due funi portanti e una fune traente
ITMI20060069 ITMI20060069A1 (it) 2006-01-18 2006-01-18 Carrello per impianto funiviario automatico dotato di 2 funi portanti e una fune traente

Publications (3)

Publication Number Publication Date
EP1832490A2 EP1832490A2 (de) 2007-09-12
EP1832490A3 EP1832490A3 (de) 2008-10-08
EP1832490B1 true EP1832490B1 (de) 2011-05-18

Family

ID=38316693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060077159 Active EP1832490B1 (de) 2005-12-06 2006-12-29 Seilklemme für Träger einer automatischen Seilbahninstallation

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2935945B1 (fr) * 2008-09-16 2013-07-19 Pomagalski Sa Installation de telepherique.
IT201700093739A1 (it) * 2017-08-22 2019-02-22 Ferruccio Levi Funivia bifune automatica con doppia fune portante e singola fune traente, di tipo semplificato
IT201800006233A1 (it) * 2018-06-12 2019-12-12 Carrello per supportare unita' di trasporto sospese a una guida di un impianto di trasporto e impianto di trasporto comprendente tale carrello

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131718B (de) * 1962-06-20 Pohlig Ag J Klemmvorrichtung zur seitlichen Aufnahme des Zugseiles, insbesondere fuer Umlaufseilbahnen
CH396073A (de) * 1962-02-14 1965-07-31 Schwermaschinenbau Verlade Und Kuppelapparat für Einseilbahnen
FR2119894B1 (de) * 1970-12-31 1973-12-07 Laurent Roger
FR2356544A1 (fr) * 1976-06-28 1978-01-27 Laurent Roger Dispositif d'accouplement pour une installation de transport bicable
EP0283888B1 (de) * 1987-03-25 1991-10-16 Von Roll Transportsysteme AG Seilförderanlage
AT414332B (de) * 2001-01-29 2008-04-15 High Technology Invest Bv Seilbahn und laufwerk

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EP1832490A3 (de) 2008-10-08
EP1832490A2 (de) 2007-09-12

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