US3865044A - Guide device for the haulage attachments of a ski-lift or similar device - Google Patents

Guide device for the haulage attachments of a ski-lift or similar device Download PDF

Info

Publication number
US3865044A
US3865044A US365737A US36573773A US3865044A US 3865044 A US3865044 A US 3865044A US 365737 A US365737 A US 365737A US 36573773 A US36573773 A US 36573773A US 3865044 A US3865044 A US 3865044A
Authority
US
United States
Prior art keywords
pulley
cable
haulage
rod
shaped
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
US365737A
Other languages
English (en)
Inventor
Guy Henri Bancel
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR7219951A external-priority patent/FR2188545A5/fr
Priority claimed from FR7305386A external-priority patent/FR2217255A1/fr
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3865044A publication Critical patent/US3865044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

  • ABSTRACT Device for guiding the haulage attachments of an in stallation for hauling loads by means of a cable over a pulley over which the cable passes, comprising means disposed along the path of the haulage cable, extending from upstream of the pulley, in the normal displacement direction of the cable, to beyond the rotation axis of said pulley, said means comprising wire shaped members which provide at least two support zones with which the attachment is adapted to cooperate in order to be brought eventually with the auxiliary members connected thereto, and whatever the positioning of the assembly, to a position enabling normal passage over the pulley when the cable to which said attachment is connected advances.
  • the present invention relates to a guide device for the haulage attachments of a ski-lift or similar device.
  • the loads are drawn by the moving cable by means of poles each of which is attached to the cable by means such as a sleeve, disengageable or not, on which a cross-head connected to the pole properly speaking by a powerful return spring is articulated.
  • the haulage cable is guided by pulleys rotatably mounted on masts spaced along the track of the installation and, when a pole is separated from the load that it is hauling in the vicinity of a pulley, for example when the pole escapes from the skier that it is pulling, incorrect positioning of the cross-head and/or the spring and/or the pole properly speaking, may result in serious damage to the pulley and/or the head of its supporting mast, as well as, possibly, derailment of the cable.
  • the device according to the invention which is designed to be as associated with a pulley of a cable type load haulage installation, such as a ski-lift or similar device, is characterised in that it includes means disposed along the path of the haulage cable, starting from a point upstream of the pulley in the normal displacement direction of the cable and extending beyond the rotation axis of said pulley, said means comprising wire-like and/or surfacic members which provide at least two support zones with which the attachment is adapted to cooperate in order to be brought together with, eventually, the auxiliary members connected thereto, and whatever the positioning of the assembly, to a position enabling the pulley to be passed normally when the cable to which said attachment is fitted advances.
  • FIG. 1 is an end view of a device according to the invention equiping a lift pulley, for a first embodiment
  • FIG. 2 is a view analogous to that in FIG. 1, illustrating the passage, at right angles to a pulley, of the extremity attaching a haulage pole or similar device to the cable;
  • FIG. 3 is an elevation view of the device
  • FIG. 4 is a top view of the device illustrated in FIG.
  • FIG. 5 is a view analogous to that in FIG. 3 but for another form of pulley suitable for being fitted with such a device;
  • FIG. 6 is an elevation view of a device according to the invention fitted to a ski-lift pulley, for another embodiment
  • FIG. 7 is a top view of the device represented in FIG.
  • FIG. 8 is a perspective view illustrating the functioning of the device represented in FIGS. 6 and 7;
  • FIG. 9 is a part view similar to that of FIG. 6, but for another embodiment.
  • FIG. 10 is a top view of the device represented in FIG. 9;
  • FIG. 11 illustrates the functioning of the form of embodiment represented in FIGS. 9 and I0.
  • the device according to the invention is associated with a ski-lift, of the type described in the co-pending US. Patent Application Ser. No. 207,762 entitled: Improved cable guide device pulley, particularly for a ski-lift, in the name of the present Applicant.
  • Such a pulley P comprises two lateral flanges f, and f cut out to provide teeth d d .d,, d' etc. (FIG. 3), for conveying attachments or cross-heads Cr and sleeves m for attaching said attachments to haulage cable 0 guided in the groove of pulley P rotatably mounted about a shaft a borne by a bracket P0 of a mast (not shown).
  • the haulage attachments or cross heads may be connected to the cable by means of any conventional construction such as, for example, sleeves which are attached to the cable in either a fixed or detachable manner.
  • the device according to the invention, 10, for guiding an attachment or cross-head (Cr as it passes pulley P, includes an arm 11 constituted by a metallic tube or solid rod, shaped at its upstream extremity, in the cable movement direction, to form a return member I2.
  • Arm 11 constituted by a metallic tube or solid rod, shaped at its upstream extremity, in the cable movement direction, to form a return member I2.
  • distance of which from outer flange f of the pulley can be in the order of about 30 cm extends over a portion of its length substantially parallel to cable 0 at a distance from the axis of the pulley slightly less than the radius of the circle defining the bases of teeth d d d,, d' of flanges f, and f as clearly visible in FIG. 3.
  • Two spokes or arms 21 and 22, attached to flat member 19 in the vicinity of shaft a extend to a zone adjacent to the periphery of flange f, where they are attached, for example by welding, to an arm 23 (FIG. 3) connected to the member 12 of arm 11 at the upstream extremity of the device in relation to the displacement direction of from the groove of pulley P in which it is usually ,received.
  • the invention is not limited to its application to a pulley such as defined in the patent application above mentioned.
  • the device according to the invention can also be applied to fit a conventional guiding pulley P of a ski-lift or similar device.
  • this device includes a surfacic member 111, for example of sheet metal or sheet metal clad with a layer of polytetrafluorethylene or, yet again, a plastic substance based on this material to prevent the adherence of frost, and which is bordered by longitudinal metallic rods 112 and 113 which extend beyond the contour of member 111.
  • Two metallic rods 114 and 115 are attached to rod 112, for example by welding, said rods being designed to mount the device on bracket PO which bears pulley P by the assembly of bars 13, 14, S described above and represented in dot and dash lines for clarity, as is the whole of device 10 described above.
  • surfacic element 111 which in working position is placed laterally with respect to cable c, on the side of the bracket carrying the pulley, is shaped to form a helical surface directed towards cable 0, said element being extended at its downstream extremity, in normal cable displacement direction, by a portion with a frustoconical surface 117, FIGS. 6 and 7, progressively flaring in the normal advance direction of the cable.
  • Rod 112 substantially shaped to form a helix in its portion bordering surfacic element 111, is disposed above the normal position of the cable and, with respect to the mean plane of the pulley groove, on the side of flange f which is closest to the bracket. Said rod, which bears on its upstream extremity a slide 116 in which bar 11 (FIG.
  • device 10 is adapted to be engaged and on which the slide is locked by means of a screw or similar device, extends beyond surfacic element 111 in a substantially rectilinear portion 112a ending substantially perpendicular to the shaft a of the pulley at which it is shaped to form a return member which diverges from said shaft with, in the vicinity of this extremity, an angle iron 120 welded to rod 112a and also to tube 115 for fitting onto assembly 13, 14, S the largest rounded edge 121 of angle iron 120, which is slightly curved, being disposed, with respect to the mean plane of the pulley groove, on the side of the bracket carrying the latter.
  • Rod 113 which borders at its lower portion and on part of its length the edge of surfacic element 111 is also substantially shaped to form a helical contour, but in the opposite direction to that of rod 112, so that the two said rods meet at their extremity 122 which is the extremity upstream of the device in relation to the normal displacement direction of haulage cable 0.
  • the primary purpose and function of surfacic element 111, metallic rod 112, and frusto-conical surface 117 are to assist in the guidance of the haulage attachments or cross-heads.
  • FIG. 8 represents, in dotted lines, a first unfavourable cross-head position Cr, and, in dot and dash lines, a second unfavourable cross-head position Cr, and, in continuous lines, the normal position in which said cross-head passes without difficulty over polley P.
  • the cross-head can, for example, when an attachment is abruptly separated from the load that it is hauling substantially above the device, and it oscillates owing to the action of its return spring or the dynamic stresses applied to it, positions itself before entering the device, or when it is already engaged therein, as represented at Cr,, i.e., not hang from the cable but project upwardly therefrom and in relation to the median plane of the pulley groove, on the side directed towards bracket PO.
  • such faulty cross-head positioning may cause it to jam between the bracket and the pulley and, consequently, as the haulage cable continues to advance at a relatively high speed, this may cause the head of the mast to sag, which not only makes the installation unusable but can also cause the cable to be derailed and/or break, entailing extremely grave consequences with respect to the safety of the loads hauled by the installation and, in particular, the persons using the installation in the case of a ski-lift.
  • Angle iron on the edge 121 of which slides the cross-head or one of the members integral therewith contributes to the satisfactory passage over the pulley of the attachment assembly, when the cross-head, without being brought to its normal position, is nonetheless in a plane sufficiently close to the median plane of the pulley groove.
  • a projection t of the cross-head, or another projecting portion of the sleeve is broght into cooperation with the helical surface element 111, which, when said cross-member moves in the direction of arrow s, causes it to return to a correct position as represented in unbroken lines Cr or, at least, to a position in which the said cross-head is, in relation to the median plane of the pulley groove, on the side of outer flange f which, being rotatably mounted on the pulley properly speaking, as explained in the above mentioned patent application, enables the pulley to be crossed by the cross-head and its dependent member.
  • the frusto-conical surface 117 extending the helica surface 111 makes it possible, should the cable abruptly stop when the cross-head is about to engage the pulley, this stoppage then being accompanied by a retreat of said cross-head in the direction of arrow s,
  • FIGS. 9 to 1 concerning another embodiment, which, advantageously associated with a device 10 as above described, includes the same bar means 114 and 115 as those in the previous embodiment for mounting it on the bracket or the mast PO carrying pulley P.
  • a rod 130 similar in form to that of rod 112 in the previous embodiment, i.e., including a portion 1300 of helical shape extended by a portion 130b, slightly curved with its concave surface directed towards the median plane of the pulley groove, is disposed substantially above cable c with its extremity 130C substantially perpendicular to the rotation axis of the pulley, said extremity being shaped like that of rod 11211 in the previous embodiment, and for the same purpose.
  • a second rod 132 also generally helicoidal but in a direction opposite that of portion 130a of rod 130, the assembly of rod 132 and portion 130a of rod 130 having the shape, in elevation, of an elongated eye (FIG. 9).
  • This embodiment operates similarly to that of the previous embodiment, rod 130 directing a correctly positioned cross-head Cr towards the median plane of the pulley groove while the lower rod 132 also directs the unsatisfactorily positioned cross-heads towards the median plane of the pulley groove.
  • rod 130 whose position with respect to cable 6 is illustrated in FIG. 10, prevents said cable c from overlapping said rod 130 in the event of lateral stresses applied to the cable.
  • helicoidal element 111 in the previous form of embodiment is advantageously coated with a plastic material, such as polytetrafluorethylene, to prevent the adherence of frost
  • the invention provides for coating rods such as 130 and 132 using such a material, and for the same purpose, said coating additionally ensuring sliding with light friction of the incorrectly positioned cross-heads over said bars.
  • a device for guiding supporting said loads on a cable over a guide pulley over which the cable passes comprising means disposed along the path of the haulage cable, extending from upstream of the pulley, in the normal displacement direction ofthe cable, to beyond the rotation axis of said pulley, said means comprising at least two wire shape members which provide at least two support zones within which the haulage attachments are guided by at least one or the other of said wire shape members in order to be brought eventually with-the auxiliary members connected thereto, and depending upon the orientation of the incoming hauling attachment so that said hauling attachment is cammed or guided away from said pulley and then guided back to its original orientation to a position enabling normal passage over the pulley when the cable to which said attachment is connected advances.
  • said means include two.rods, each comprising a helically shaped portion, placed one above the haulage cable and the other below, the helical portion of the upper rod being extended, in the direction of the pulley axis, by a rectilinear or slightly curved portion to a position substantially at right angles to said axis, while the lower rod, whose helical winding direction is opposite to that of the helical portion of the upper rod, is connected to the latter at its extremity upstream in relation to the normal displacement direction of the cable.
  • Device further comprising, in the vicinity of the downstream extremity of the upper rod, in relation to the normal displacement direction of the haulage cable, a curved bracket with a rounded edge disposed above said rod.
  • Device according to claim 2 further comprising bears for mounting the device on a bracket carrying the pulley, said bars being attached to the upper rod.
  • Device comprising a wirelike member shaped to form a first arm extending at a distance from the outer face of the pulley, substantially parallel to the cable over the greatest portion of its length, said arm being connected to the pulley support by two rods transverse of said pulley, while a second arm defines an Y-shaped structure with the first.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)
  • Basic Packing Technique (AREA)
  • Flexible Shafts (AREA)
US365737A 1972-06-02 1973-05-31 Guide device for the haulage attachments of a ski-lift or similar device Expired - Lifetime US3865044A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7219951A FR2188545A5 (ja) 1972-06-02 1972-06-02
FR7305386A FR2217255A1 (en) 1973-02-15 1973-02-15 Ski-lift traction guides - with ptfe - coated elements

Publications (1)

Publication Number Publication Date
US3865044A true US3865044A (en) 1975-02-11

Family

ID=26217136

Family Applications (1)

Application Number Title Priority Date Filing Date
US365737A Expired - Lifetime US3865044A (en) 1972-06-02 1973-05-31 Guide device for the haulage attachments of a ski-lift or similar device

Country Status (9)

Country Link
US (1) US3865044A (ja)
JP (1) JPS5322733B2 (ja)
CA (1) CA982971A (ja)
CH (1) CH577400A5 (ja)
DE (1) DE2328038C3 (ja)
ES (1) ES192110Y (ja)
IT (1) IT988937B (ja)
NO (1) NO134325C (ja)
SE (1) SE399219B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395869A1 (fr) * 1977-06-29 1979-01-26 Pomagalski Sa Dispositif de rattrapage d'un cable pour teleski a attaches debrayables
JPH028728U (ja) * 1988-06-27 1990-01-19

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1677868A (en) * 1928-07-17 Assiqnob to the pibestone tike and bubbeb
US1704150A (en) * 1927-03-03 1929-03-05 Ralph J Riley Sprocket wheel
US3401643A (en) * 1965-11-29 1968-09-17 Boyne Mountain Lodge Ski lift control mechanism
US3417710A (en) * 1967-01-13 1968-12-24 Kokes Steven Conveyor apparatus
US3429279A (en) * 1966-12-20 1969-02-25 Jean Pomagalski Device for supporting and guiding the cable of an aerial cableway
US3461813A (en) * 1967-04-05 1969-08-19 Alexander Mcilvaine Ski lift chair stabilizer
US3679258A (en) * 1968-10-22 1972-07-25 David R Pender Seat unit for ski lift apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1677868A (en) * 1928-07-17 Assiqnob to the pibestone tike and bubbeb
US1704150A (en) * 1927-03-03 1929-03-05 Ralph J Riley Sprocket wheel
US3401643A (en) * 1965-11-29 1968-09-17 Boyne Mountain Lodge Ski lift control mechanism
US3429279A (en) * 1966-12-20 1969-02-25 Jean Pomagalski Device for supporting and guiding the cable of an aerial cableway
US3417710A (en) * 1967-01-13 1968-12-24 Kokes Steven Conveyor apparatus
US3461813A (en) * 1967-04-05 1969-08-19 Alexander Mcilvaine Ski lift chair stabilizer
US3679258A (en) * 1968-10-22 1972-07-25 David R Pender Seat unit for ski lift apparatus

Also Published As

Publication number Publication date
ES192110U (es) 1974-10-16
JPS4955040A (ja) 1974-05-28
AU5646273A (en) 1974-12-05
CH577400A5 (ja) 1976-07-15
DE2328038B2 (de) 1980-03-06
SE399219B (sv) 1978-02-06
JPS5322733B2 (ja) 1978-07-11
ES192110Y (es) 1975-02-01
NO134325B (ja) 1976-06-14
IT988937B (it) 1975-04-30
NO134325C (ja) 1976-09-22
DE2328038C3 (de) 1980-11-06
DE2328038A1 (de) 1973-12-13
CA982971A (en) 1976-02-03

Similar Documents

Publication Publication Date Title
US4790410A (en) Safety track support and coupling
EP0585268B1 (en) Fall-arrest apparatus
US4699245A (en) Safety device for working at great heights
AU5461498A (en) Track transport system with support bracket and track-traveling apparatus
KR960037461A (ko) 천정주행차
DE1810439A1 (de) Einzelschienentransportvorrichtung
US3865044A (en) Guide device for the haulage attachments of a ski-lift or similar device
ATA89895A (de) Mechanischer seilentgleisungsschutz
EP0281205A2 (de) Umlaufseilbahnanlage mit Ablenkung des Zug-Tragseilverlaufes
US3868907A (en) Hooking device for a ski-lift tow bar and ski-lift including said bars
DE3443110C2 (de) Einrichtung zum Bergen eines Fahrzeugs
DE672318C (de) Laufkatzenanlage
US4276831A (en) Trolley storage
FR2666778A1 (fr) Passerelle mecanisee.
JP2569588Y2 (ja) ビーム上作業用手すり
EP0459186B1 (de) Hängeförderer mit einer Einrichtung zum Aufstauen der Förderwagen
DE3801056A1 (de) Foerdereinrichtung fuer eine haengefoerderung
GB1582699A (en) Device for suspending a sliding sealing door
CN219859499U (zh) 斗轮机
DE1857054U (de) Vorrichtung zur seilfuehrung und -halterung bei einer einschienen-haengebahn.
EP0803595A3 (en) Fiber bundle threading device
EP0053137B1 (en) Block for transport lines
JP2816108B2 (ja) 索道用カーブ支持器
DE138351C (ja)
DE1885228U (de) Vorrichtung zur zugseilfuehrung bei einschienen-haengebahnen.