FR2630389A1 - Shoe for supporting a load-bearing cable of a teleferic system - Google Patents

Abstract

A shoe 10 for supporting a load-bearing cable 12 of a teleferic system has, in its front parts 16 and rear parts 18, a groove with an open bottom to facilitate the discharge of ice.

Description

SHOE FOR SUPPORTING A CABLE CARRYING A CABLE CAR.

  The invention relates to a device for supporting a cable carrying a cable car comprising an elongated shoe, the upper support surface of the cable having a groove for accommodating the cable, said shoe having a central part on which the

  cable remains permanently supported and anterior extensions

  curved laughter and posterior framing the middle part, the cable temporarily coming to bear said extensions according to

  the position of the load along the cable.

  The shoe attached to the top of a pylon is curved and extends over

  sufficient cable length to avoid ex-

  cessation of the latter, regardless of the position of the load, in this case. of the bucket on the line. The curvature of the cable varies with the displacement of the bucket and the load thereof, and the cable support length is limited to the middle or central part of the shoe when the line is unloaded, the buckets

  being at the stations. During the move and a rgp-

  near the pylon bucket, the cable comes to bear more and more on the shoe while being housed in the guide groove. The

  cable cars are arranged in locations exposed to conditions

  tions. exceptional weather conditions and when the installation is stopped, especially during the night, frost and ice deposits are frequent. This glass closes off the parts of the shoe throat which are not occupied by the cable and may even constitute a projection. During startup, the cable cannot penetrate the groove closed by the glass and it can even be deflected laterally by the projection with a risk of derailment of the cable. The present invention aims to allow the production of a device for supporting a carrying cable ensuring a

  better operational safety.

  The support device according to the invention is characterized in that

  that on said extensions the bottom of said groove is pot-

  partially or completely open so that the frost or ice accumulated in the throat is pushed outward through said open bottom when the cable penetrates

the throat.

  The anterior and posterior parts of the hoof, which extend

  the middle part of the shoe on which the cable remains permanently

  nence in support, have a groove whose bottom is open to allow the ice to escape downwards under the thrust of the cable entering the groove. This exhaust will be all the easier as the openings will be large and in a preferred embodiment, the bottom is fully open, the groove being formed by the upper edges of two spaced vertical plates. Crosspieces or transverse webs can join the two plates to ensure mechanical rigidity without significantly impeding the escape of the ice. The middle part of the hoof is advantageously in one piece and the plates forming the anterior extensions and

  posterior are fixed to this middle part.

  The pushing back of the ice is facilitated by a flaring down the bottom of the throat which is for example obtained by a slight inward bending of the upper edges of the plates

  carrying the cable support edges.

  The plates forming the shoe extensions may be made of a material suitable for sliding the cable over the shoe without risk of wear or advantageously being simple iron plates

  whose edges are coated with an anti-synthetic material

  friction, especially commercially known as Cestidur.

  Other advantages and characteristics of the invention emerge-

  more clearly from the description which follows of a mode

  implementation of the invention, given by way of nonlimiting example and shown in the accompanying drawing, in which: - Figure 1 is an elevational view of the support device according to the invention, the cable being shown unloaded; - Figure 2 is a section along line A-A of the figure

  1, the cable being shown in contact with the shoe in a drawn line

  continuous and in broken lines out of the throat.

  Sure. the figures, a shoe 10 for supporting a carrying cable 12 of a cable car is fixed to the top of a pylon, not shown,

  and has on its upper face a guide groove in the

  which the cable 12 rests while being able to slide longitudinally-

  is lying. The curvature of the shoe 10 is sufficiently small to avoid

  ter excessive bending of the cable 12 and its length is such that the cable 12 never comes into contact with the ends of the shoe 10, whatever the line load or the position

  of the bucket on the line. The cable 12 remains in permanent support

  nence of the central or middle part 14 of the shoe 10 to which a front part or extension 16 and a rear part or extension 18 are connected, on which the cable 12 comes to rest temporarily, respectively when the bucket approaches and engages on the shoe 10 and when it leaves it. The middle part 14 is a solid piece grooved on the upper face to form the cable guide groove. 12. The extensions 16, 18 each consist of

  two vertical plates 20, 22 spaced apart, extending parallel-

  ment to the cable 12 and the upper edges 24, 26 of which are

  curved toward each other to define a narrowed entry 28.

  The edges 30, 32 of the edges 24, 26 extend in the planes of a dihedral and constitute two inclined surfaces for supporting the cable 12, the spacing of which is less than the diameter of the cable 12, so that the resulting RR ' of the range of the cable 12 pass substantially through the axis of the cable 12, when the latter is in abutment on the edges 30, 32. The two plates 20, 22

  are fixed to the middle part 14 and secured by

  tretoises or transverse webs 34, constituted for example by substantially vertical sheets whose edges are welded

  to the plates 20, 22. The sections 30, 32 form a groove of ap-

  then cable 12, the bottom of which is open downward to allow snow or ice to escape. The spacing between the sails 34 must be sufficient not to close the bottom of the throat and not to impede the escape of the ice which is favored

  by widening at the base of the throat.

  It is easy to understand that when the cable 12 is in the position extended from the groove, shown in broken lines in FIG. 2, frost and ice can accumulate in the throat by closing the space between the plates 20, 22 and

  even constituting a rib projecting from the hoof 10. This

  mulation can occur when the cable car stops, especially

  overnight. During start-up the cable 12 becomes

  close, under the effect of the load of the extensions 16, 18 to the support position, shown in solid lines and during this approximation the cable presses on the glass filling the groove by pushing it down. The open bottom of the throat allows

  the exhaust and the breaking of the glass, which frees the place-

  cable 12 avoiding any risk of lateral displacement

cable and derailment.

  The sections 30, 32 and possibly the entire plates 20, 22 can be made of a material suitable for supporting the cable 12 without risk of wear of the latter during sliding on the shoe 10, but in a setting mode. preferred work these sections 30, 32 are coated with an anti-friction material called

commercially CESTIDUR.

  The plates 20, 22 can of course be slightly inclined to define a corner space open downwards facilitating the exit of the ice, and the plates 20, 22 can be planar

  with bevelled edges forming the bearing faces 30, 32.

  It would not be departing from the scope of the invention to produce a one-piece shoe 10 and machine the extensions 16, 18 in order to reveal the ice escape spaces at the bottom.

throat.

Claims (6)

  1. Device for supporting a carrying cable (12) of a telephone   risk comprising an elongated shoe (10) whose upper surface for supporting the cable has a cable housing groove, said shoe having a middle part (14) on which the cable remains in permanent contact, and anterior extensions (16 ) and posterior (18) curved framing the middle part (14), the cable temporarily coming into abutment of said extensions (16,   18) depending on the position of the load along the cable,   laughed in that on said extensions (16, 18) the bottom of said groove is partially or completely open so that the frost or ice accumulated in the throat is repelled   outwards through said open bottom during penetration tration of the cable in the groove.   2. Support device according to claim 1, characterized in that said extensions (16, 18) consist of two metal plates (20, 22) parallel vertical of which   the upper sections (30, 32) constitute inclined faces   born in the form of a support groove and cable guide.   3. Support device according to claim 2, characterized in that said edges (30, 32) of the cable support extend   on both sides of an upward-facing dihedral, the results   support aunts (R, R ') of the cable (12) passing substantially through the axis of the cable.   4. Support device according to claim 2 or 3, caroc-   terized in that the upper edges (24, 26) of said two plates (20, 22) are inclined towards one another to orient the sections (30, 32) along said inclined faces, the space   between the two plates being greater than the width of the. throat..   5. Support device according to claim 2, 3 or 4, charac-   terized in that said sections (30, 32) are coated with a   anti-friction synthetic material.   6. Support device according to claim 2, 3, 4 or 5, characterized in that said vertical plates (20, 22) are   secured by spaced transverse sails (34), the   middle tie (14) of the shoe (10) being in one piece.