WO2009053485A2 - Cable transportation system and relative operating method - Google Patents

Cable transportation system and relative operating method Download PDF

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Publication number
WO2009053485A2
WO2009053485A2 PCT/EP2008/064491 EP2008064491W WO2009053485A2 WO 2009053485 A2 WO2009053485 A2 WO 2009053485A2 EP 2008064491 W EP2008064491 W EP 2008064491W WO 2009053485 A2 WO2009053485 A2 WO 2009053485A2
Authority
WO
WIPO (PCT)
Prior art keywords
guide roller
cross member
pull cable
cable
metal structure
Prior art date
Application number
PCT/EP2008/064491
Other languages
French (fr)
Other versions
WO2009053485A3 (en
Inventor
Andrea Durante
Federico Bavaresco
Giuseppe Conte
Original Assignee
Rolic Invest S.Ar.L
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 Rolic Invest S.Ar.L filed Critical Rolic Invest S.Ar.L
Priority to AT08841222T priority Critical patent/ATE529315T1/en
Priority to EP08841222A priority patent/EP2219926B1/en
Priority to ES08841222T priority patent/ES2375653T3/en
Priority to US12/739,901 priority patent/US8408141B2/en
Publication of WO2009053485A2 publication Critical patent/WO2009053485A2/en
Publication of WO2009053485A3 publication Critical patent/WO2009053485A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B9/00—Tramway or funicular systems with rigid track and cable traction
    • 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
    • B61B12/04—Devices for damping vibrations

Definitions

  • the present invention relates to a cable transportation system.
  • the present invention relates to a cable transportation system comprising a pull cable defined by a number of strands and drawn along a path; at least one transportation unit movable along the path and connectable to the pull cable by a coupling device; a metal structure placed along the path to support and guide the transportation unit; and at least one pull cable guide roller supported by the metal structure.
  • Systems of the above type are substantially rail- mounted cable transportation systems that extend along paths with bends and varying in height.
  • the path comprises portions with no foundation, as in the case of bridges, which means the guide rollers must be connected to the metal structure of the bridge or to the rails themselves.
  • This technical solution may pose various environmental problems, on account of the noise generated by the metal structure.
  • This drawback may also prevent development of cable transportation technology in urban environments, as, for example, along elevated metal structures.
  • a cable transportation system of the above type designed to eliminate the above drawback of the known art.
  • a cable transportation system characterized in that the guide roller is connected to the metal structure by leaf springs which damp vibration caused by contact between the strands of the pull cable and the guide roller.
  • Figure 1 shows a partly sectioned front view, with parts removed for clarity, of a cable transportation system in accordance with the present invention
  • Figure 2 shows a larger-scale, partly sectioned view in perspective, with parts removed for clarity, of the pull cable of the Figure 1 system;
  • Figure 3 shows a larger-scale view in perspective, with parts removed for clarity, of a detail of the Figure 1 cable transportation system;
  • Figure 4 shows a partly sectioned front view, with parts removed for clarity, of a variation of the present invention
  • Figure 5 shows a larger-scale, partly sectioned front view, with parts removed for clarity, of a variation of the Figure 1 transportation system.
  • BEST MODE FOR CARRYING OUT THE INVENTION Number 1 in Figure 1 indicates a passenger cable transportation system.
  • cable transportation system 1 comprises a pull cable 2 drawn at substantially constant speed along a path P; at least one transportation unit 3 connectable selectively to pull cable 2 by a coupling device 4; a metal structure 5 for supporting and guiding transportation unit 3; and at least one guide roller 6 for guiding pull cable 2 and supported by metal structure 5.
  • pull cable 2 extends along an axis Al, and is defined by a number of strands 7 twisted about axis Al. Each strand 7 is in turn defined by a number of metal wires 8 twisted about a non-metal core 9, with the result that pull cable 2 has an outer surface 10 characterized by successive dips and ridges at regular intervals.
  • transportation unit 3 comprises a frame 11; two supporting wheels 12 resting on metal structure 5; two control wheels 13 controlling wheels 12; and coupling device 4, which comprises a clamp 14 for selectively connecting and releasing transportation unit 3 to and from pull cable 2, as described in detail in the Applicant's Patents EP 1 077 167 Bl and EP 0 687 607 Bl.
  • transportation unit 3 is fixed to pull cable 2 by a non- releasable clamp as typically employed in a back-and- forth transportation system.
  • Metal structure 5 comprises two beams 15 substantially parallel to path P and defining construction members of a complex elevated structure; and two further beams 16, each substantially parallel to path P and resting on a respective beam 15 by means of spacers 17 distributed along path P.
  • further beams 16 define the rails on which transportation unit 3 rests.
  • Guide roller 6 is connected to metal structure 5 by a frame 18 which, in the example shown, is fixed to beams 16.
  • frame 18 is fixed to beams 15.
  • Guide roller 6 rotates about an axis A2, and comprises an annular groove 19 for housing pull cable 2 ; and a pin 20, of axis A2, supported rigidly by frame 18.
  • frame 18 comprises two parallel cross members 21 crosswise to beams 15; a bar
  • Each cross member 21 comprises a central portion 24; and two end portions 25 connected telescopically to central portion 24 and fixed to central portion 24 by screws.
  • Each cross member 21 is longer than the distance between beams 15 (beams 16), i.e. is longer than the distance between the rails.
  • Each end portion 25 of cross member 21 is fixed to beam 16 by two leaf springs 26, 27 perpendicular to each other.
  • leaf spring 26 is substantially vertical and perpendicular to cross member 21
  • leaf spring 27 is substantially horizontal and parallel to cross member 21.
  • Leaf spring 26 has a first end gripped between the end of cross member 21 and a flange 28; and a second end gripped between a block 29 and a flange 30.
  • Leaf spring 27 has a first end gripped between block 29 and a flange 31; and a second end gripped between a bracket 32 and a flange 33.
  • Bracket 32 is C- shaped and connected rigidly to beam 16.
  • each leaf spring 26, 27 is made of a number of packed spring steel plates 34.
  • each leaf spring 26, 27 is chosen as a function of the tilt of axis A2 of guide roller 6, and of the loads transmitted by pull cable 2 to guide roller 6.
  • the tilt of axis A2 is in turn chosen as a function of path P of pull cable 2.
  • one of leaf springs 26, 27 may not be needed and may even be eliminated.
  • Figure 5 shows a frame 35 for supporting guide roller 6 positioned, in the example shown, with its axis A2 horizontal and substantially crosswise to path P.
  • Frame 35 comprises a cross member 36; a plate 37 for adjusting the height of guide roller 6; and an upright 38 integral with pin 20 of guide roller 6.
  • Cross member 36 is located beneath beams 16, is equal in length to the distance between beams 16 (the rails), and has two ends, each of which is fixed to a respective flange 39 facing the underside of beam 16, and is connected to beam 16 by a substantially horizontal leaf spring 40.
  • Leaf spring 40 is substantially parallel also to axis Al of cable 2, and has one end fixed to flange 39 by a flange 41 and screws, and one end gripped between a spacer 42 and a flange 43. Spacer 42 is integral with a bracket 44 anchored to beam 16. Leaf spring 40 is also made of packed spring steel plates 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Cable Installation (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Ropes Or Cables (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A cable transportation system (1) having a pull cable (2) defined by a number of strands (7) and drawn along a path (P); at least one transportation unit (3) movable along the path (P) and connected to the pull cable (2) by a coupling device (4); a metal structure (5) located along the path (P) to support and guide the transportation unit (3); and at least one guide roller (6) for guiding the pull cable (2) and supported by the metal structure (5) by means of leaf springs (26, 27, 40) which damp vibration caused by the strands (7) of the pull cable (2) contacting the guide roller (6).

Description

CABLE TRANSPORTATION SYSTEM AND RELATIVE OPERATING METHOD
TECHNICAL FIELD The present invention relates to a cable transportation system.
More specifically, the present invention relates to a cable transportation system comprising a pull cable defined by a number of strands and drawn along a path; at least one transportation unit movable along the path and connectable to the pull cable by a coupling device; a metal structure placed along the path to support and guide the transportation unit; and at least one pull cable guide roller supported by the metal structure. BACKGROUND ART
Systems of the above type are substantially rail- mounted cable transportation systems that extend along paths with bends and varying in height.
A system of this sort is described in the Applicant's Patent EP 0 687 607 Bl. Guiding the pull cable around bends and along different heights calls for guide rollers that are normally supported by a normally concrete foundation structure.
Sometimes, however, the path comprises portions with no foundation, as in the case of bridges, which means the guide rollers must be connected to the metal structure of the bridge or to the rails themselves.
This technical solution may pose various environmental problems, on account of the noise generated by the metal structure.
This drawback may also prevent development of cable transportation technology in urban environments, as, for example, along elevated metal structures.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a cable transportation system of the above type designed to eliminate the above drawback of the known art. According to the present invention, there is provided a cable transportation system, characterized in that the guide roller is connected to the metal structure by leaf springs which damp vibration caused by contact between the strands of the pull cable and the guide roller.
BRIEF DESCRIPTION OF THE DRAWINGS
A number of non-limiting embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which: Figure 1 shows a partly sectioned front view, with parts removed for clarity, of a cable transportation system in accordance with the present invention;
Figure 2 shows a larger-scale, partly sectioned view in perspective, with parts removed for clarity, of the pull cable of the Figure 1 system;
Figure 3 shows a larger-scale view in perspective, with parts removed for clarity, of a detail of the Figure 1 cable transportation system; Figure 4 shows a partly sectioned front view, with parts removed for clarity, of a variation of the present invention;
Figure 5 shows a larger-scale, partly sectioned front view, with parts removed for clarity, of a variation of the Figure 1 transportation system. BEST MODE FOR CARRYING OUT THE INVENTION Number 1 in Figure 1 indicates a passenger cable transportation system. In the Figure 1 example, cable transportation system 1 comprises a pull cable 2 drawn at substantially constant speed along a path P; at least one transportation unit 3 connectable selectively to pull cable 2 by a coupling device 4; a metal structure 5 for supporting and guiding transportation unit 3; and at least one guide roller 6 for guiding pull cable 2 and supported by metal structure 5.
With reference to Figure 2, pull cable 2 extends along an axis Al, and is defined by a number of strands 7 twisted about axis Al. Each strand 7 is in turn defined by a number of metal wires 8 twisted about a non-metal core 9, with the result that pull cable 2 has an outer surface 10 characterized by successive dips and ridges at regular intervals.
With reference to Figure 1, transportation unit 3 comprises a frame 11; two supporting wheels 12 resting on metal structure 5; two control wheels 13 controlling wheels 12; and coupling device 4, which comprises a clamp 14 for selectively connecting and releasing transportation unit 3 to and from pull cable 2, as described in detail in the Applicant's Patents EP 1 077 167 Bl and EP 0 687 607 Bl.
In a variation not shown in the drawings, transportation unit 3 is fixed to pull cable 2 by a non- releasable clamp as typically employed in a back-and- forth transportation system.
Metal structure 5 comprises two beams 15 substantially parallel to path P and defining construction members of a complex elevated structure; and two further beams 16, each substantially parallel to path P and resting on a respective beam 15 by means of spacers 17 distributed along path P. In other words, further beams 16 define the rails on which transportation unit 3 rests.
Guide roller 6 is connected to metal structure 5 by a frame 18 which, in the example shown, is fixed to beams 16.
In a variation not shown in the drawings, frame 18 is fixed to beams 15.
Guide roller 6 rotates about an axis A2, and comprises an annular groove 19 for housing pull cable 2 ; and a pin 20, of axis A2, supported rigidly by frame 18.
With reference to Figure 3, frame 18 comprises two parallel cross members 21 crosswise to beams 15; a bar
22 (Figure 1) rigidly supporting pin 20 (Figure 1) and substantially parallel to beams 15; and two pairs of flanges 23 by which to fix bar 22 to cross members 21. The position of flanges 23 with respect to cross members
21 is adjustable to adjust the tilt of bar 22 and therefore of axis A2, and to adjust the position of bar
22 in a direction parallel or crosswise to cross members 21. Each cross member 21 comprises a central portion 24; and two end portions 25 connected telescopically to central portion 24 and fixed to central portion 24 by screws. Each cross member 21 is longer than the distance between beams 15 (beams 16), i.e. is longer than the distance between the rails.
Each end portion 25 of cross member 21 is fixed to beam 16 by two leaf springs 26, 27 perpendicular to each other. In the Figure 1 and 3 example, leaf spring 26 is substantially vertical and perpendicular to cross member 21, and leaf spring 27 is substantially horizontal and parallel to cross member 21.
Leaf spring 26 has a first end gripped between the end of cross member 21 and a flange 28; and a second end gripped between a block 29 and a flange 30. Leaf spring 27 has a first end gripped between block 29 and a flange 31; and a second end gripped between a bracket 32 and a flange 33. Bracket 32 is C- shaped and connected rigidly to beam 16.
With reference to Figure 4, each leaf spring 26, 27 is made of a number of packed spring steel plates 34.
With reference to Figure 3, the length of each leaf spring 26, 27 is chosen as a function of the tilt of axis A2 of guide roller 6, and of the loads transmitted by pull cable 2 to guide roller 6. The tilt of axis A2 is in turn chosen as a function of path P of pull cable 2. Using leaf springs 26, 27 of different lengths is made possible by frame 18: both the length of cross members 21 and the position of guide roller 6 with respect to cross members 21 are adjustable.
In some cases, one of leaf springs 26, 27 may not be needed and may even be eliminated.
In the Figure 5 variation, vertical leaf springs 26 are eliminated.
More specifically, Figure 5 shows a frame 35 for supporting guide roller 6 positioned, in the example shown, with its axis A2 horizontal and substantially crosswise to path P. Frame 35 comprises a cross member 36; a plate 37 for adjusting the height of guide roller 6; and an upright 38 integral with pin 20 of guide roller 6.
Cross member 36 is located beneath beams 16, is equal in length to the distance between beams 16 (the rails), and has two ends, each of which is fixed to a respective flange 39 facing the underside of beam 16, and is connected to beam 16 by a substantially horizontal leaf spring 40.
Leaf spring 40 is substantially parallel also to axis Al of cable 2, and has one end fixed to flange 39 by a flange 41 and screws, and one end gripped between a spacer 42 and a flange 43. Spacer 42 is integral with a bracket 44 anchored to beam 16. Leaf spring 40 is also made of packed spring steel plates 34.
Tests conducted by the Applicant show leaf springs
26, 27, 40, made of spring steel (harmonic steel) plates 34, reduce noise to such a relatively low level as not to cause no harm or discomfort to people in the vicinity of cable transportation system 1.

Claims

1) A cable transportation system (1) comprising a pull cable (2) defined by a number of strands (7) and drawn along a path (P) ; at least one transportation unit (3) movable along the path (P) and connected to the pull cable (2) by a coupling device (4); a metal structure (5) located along the path (P) to support and guide the transportation unit (3) ; and at least one guide roller (6) for guiding the pull cable (2) and supported by the metal structure (5); the cable transportation system (1) being characterized in that the guide roller (6) is connected to the metal structure (5) by leaf springs
(26, 27; 40) which damp vibration caused by contact between the strands (7) of the pull cable (2) and the guide roller ( 6) .
2) A system as claimed in Claim 1, characterized by comprising a frame (18; 35) supporting the guide roller (6); the frame (18; 35) being connected to the metal structure (5) by the leaf springs (26, 27; 40) .
3) A system as claimed in Claim 2, characterized in that the metal structure (5) comprises two beams (15; 16) substantially parallel to the pull cable (2); and the frame (18; 35) comprises at least one cross member (21; 36) crosswise to the beams (15; 16) and having two ends connected to the beams (15; 16) by the leaf springs (26; 27; 40) .
4) A system as claimed in Claim 2 or 3, characterized in that the guide roller (6) has an inclined axis (A2); each end of the cross member (21) being connected to the beam (15; 16) by a vertical leaf spring (26) and by a horizontal leaf spring (27) connected in series to the vertical leaf spring (26) .
5) A system as claimed in Claim 4, characterized in that the cross member (21) comprises a central portion (24); and two end portions (25) adjustable with respect to the central portion (24) to adjust the length of the cross member (21) .
6) A system as claimed in Claim 4 or 5, characterized in that the guide roller (6) is fixed adjustably to the cross member (21) to adjust the tilt of the axis (A2) of the guide roller (6), and the position of the guide roller (6) with respect to the cross member (21) .
7) A system as claimed in Claim 2 or 3, characterized in that the guide roller (6) has an axis (A2); each end of the cross member (36) being connected to the beam (15; 16) by only one leaf spring (40) parallel to the axis (A2) .
8) A system as claimed in Claim 7, characterized in that the axis (A2) and the leaf spring (40) are substantially horizontal. 9) A system as claimed in any one of the foregoing Claims, characterized in that the leaf springs (26, 27; 40) comprise packed steel plates (34) .
10) A system as claimed in any one of the foregoing Claims, characterized in that the leaf springs (26, 27; 40) are made of spring steel.
PCT/EP2008/064491 2007-10-26 2008-10-24 Cable transportation system and relative operating method WO2009053485A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT08841222T ATE529315T1 (en) 2007-10-26 2008-10-24 CABLE TRANSPORT SYSTEM
EP08841222A EP2219926B1 (en) 2007-10-26 2008-10-24 Cable transportation system
ES08841222T ES2375653T3 (en) 2007-10-26 2008-10-24 CABLE TRANSPORTATION SYSTEM.
US12/739,901 US8408141B2 (en) 2007-10-26 2008-10-24 Cable transportation system and relative operating method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT002071A ITMI20072071A1 (en) 2007-10-26 2007-10-26 ROPE TRANSPORTATION SYSTEM AND METHOD OF OPERATION OF THE SAME
ITMI2007A002071 2007-10-26

Publications (2)

Publication Number Publication Date
WO2009053485A2 true WO2009053485A2 (en) 2009-04-30
WO2009053485A3 WO2009053485A3 (en) 2009-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/064491 WO2009053485A2 (en) 2007-10-26 2008-10-24 Cable transportation system and relative operating method

Country Status (6)

Country Link
US (1) US8408141B2 (en)
EP (1) EP2219926B1 (en)
AT (1) ATE529315T1 (en)
ES (1) ES2375653T3 (en)
IT (1) ITMI20072071A1 (en)
WO (1) WO2009053485A2 (en)

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EP2772403A1 (en) 2013-02-28 2014-09-03 Rolic International S.a.r.l. Cable transportation system switch
EP2772404A1 (en) 2013-02-28 2014-09-03 Rolic International S.A R.L. Cable transportation system for moving transportation units along a given track
US8844446B2 (en) 2007-04-20 2014-09-30 Rolic International S.Ar.L. Cable transportation system and relative drive method
EP2801503A1 (en) 2013-05-07 2014-11-12 Rolic International S.A R.L. Cable transportation system for moving transportation units along a given track
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ITMI20071618A1 (en) 2007-08-03 2009-02-04 Rolic Invest Sarl ROPE TRANSPORTATION SYSTEM AND METHOD OF OPERATION OF THE SAME
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US9114811B2 (en) 2013-02-28 2015-08-25 Ropfin B.V. Cable transportation system switch
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ITMI20072071A1 (en) 2009-04-27
US8408141B2 (en) 2013-04-02
EP2219926B1 (en) 2011-10-19
US20100294162A1 (en) 2010-11-25
ATE529315T1 (en) 2011-11-15
EP2219926A2 (en) 2010-08-25
ES2375653T3 (en) 2012-03-05
WO2009053485A3 (en) 2009-07-23

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