US3839968A - Traction carriage for cable railway - Google Patents

Traction carriage for cable railway Download PDF

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Publication number
US3839968A
US3839968A US00363405A US36340573A US3839968A US 3839968 A US3839968 A US 3839968A US 00363405 A US00363405 A US 00363405A US 36340573 A US36340573 A US 36340573A US 3839968 A US3839968 A US 3839968A
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United States
Prior art keywords
traction
track
vertical axis
trolley
boom
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
US00363405A
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English (en)
Inventor
T Kolk
W Wertelewski
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau GmbH
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 Becorit Grubenausbau GmbH filed Critical Becorit Grubenausbau GmbH
Application granted granted Critical
Publication of US3839968A publication Critical patent/US3839968A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00—Other railway systems
    • B61B13/04—Monorail systems

Definitions

  • the 104/172 S, 172 C, 178, 189, 89, 193; traction arm is connected to the cable and is so linked 105 5 14 152 with the adjacent trolley that the portion of cable to which the traction arm is connected is maintained par- 5 References Cited allel to the centre line of the track.
  • This invention concerns a traction carriage for use in a railway having a traction cable or the like which is offset from the centreline of the track, said carriage having two track-engaging trolleys mounted for rotation about vertical axes on an interconnecting beam which extends in the direction of travel and, in some cases, being slightly tiltable on said axes, the carriage being connected with a laterally projecting traction arm whereof the outer end is secured to the traction cable in such a manner as to maintain the latter in spaced relationship with the longitudinal axis of the carriage.
  • the traction carriages of suspension railways and floor mounted railways which are drawn by traction elements offset from the centreline of the track, exert comparatively strong forces on the rails owing to the high traction forces to which they are subjected which may cause bending deformation of the rail in the horizontal plane. For this reason it is generally desirable to space the track-engaging trolleys of the carriages as widely apart as possible in order to keep down the mag nitude of the forces transmitted to the rail.
  • the traction arm In the case of carriages with two trolleys, the chief difficulty arises from the fact that for an even distribution of the stresses arising from the traction force of the traction element to both of the trolleys the traction arm would have to be secured to the connecting beam rather than to one of the trolleys. Moreover, in order to permit the traction arm to pass through traction element guides arranged laterally of the rail in regions where the track bends around corners, the traction arm would also have to be secured to said connecting beam in the immediate vicinity of one of the trolleys. Otherwise the arm would follow a path too near to the centre of a curve in the track when passing along such track portion. It is true that when passing along curved track sections the two trolleys of the carriage may adapt to the radius of the curve by rotation about their vertical axes.
  • a traction arm secured to the connecting beam would always occupy a position determined by the prevailing position of said connecting beam. This would mean that on travelling through curved track portions a blade of the traction arm, with which the traction element engages, could not follow the actual course of the curve or the course of the traction element guided by suitable guide means along such curving track portions, and this would be more and more impossible with increasing constructional length of the said connecting beam. This would produce sharp angle bending of the traction element at the points where this engages with the traction arm blade, leading to difficulties during the passage of said blade through the guide means provided in the curved track region.
  • a traction carriage for a railway drawn by a traction element which is offset from the centreline of the track has two track engaging trolleys mounted for rotation about vertical axes on a connecting beam which extends in the direction of travel, a boom which is rigidly connected to the connecting beam and situated adjacent to one of the trolleys, and a traction arm mounted on the boom and rotatable, relative thereto, about a vertical axis which extends through the traction element, the traction arm being so connected to the traction element as to maintain the latter spaced from the longitudinal axis of the carriage.
  • the traction arm is capable of assuming correctly adjusted positions to ensure that its blade and the portion of the traction element secured thereto can freely follow the actual radius of any curve along the track. Since the axis of rotation about which the traction arm is rotatable extends through the traction element the traction arm cannot be subjected to any rotary or torque loads applied to its axis of rotation by the traction force of the traction means. The rotary adjustment of the traction arm is caused by forces transmitted from the traction element guides to the traction element and blade.
  • This invention makes it possible for the first time to construct a traction carriage for a cable railway with two trolleys and a traction arm engaging with an interconnecting beam of any desired length to afford a better way of transmitting to the rail the moments applied to the carriage due to the eccentric force transmission thereto.
  • the constructional length of the carriage that is to say the distance between the two trolleys thereof, is now no longer limited by any resulting reduced ability of the traction arm to pass through curving track portions.
  • the distance between the trolleys of the carriage is limited now only by the straying of the centre of the connecting beam towards the centre of the track curve, that is to say by the clearance at the side of the track along the curving section thereof.
  • the trolleys may be not only rotatable on their vertical pivots but also may have a limited amount of tiltability thereon, the ability of the carriage to pass freely through depressions and over humps will be limited only by the fact that with excessively long connecting beams these might hit against the roof or floor of the passage containing the track. This disadvantage could possibly be reduced further by providing the connecting beams with appropriately cranked formations.
  • the carriages according to the present invention have the advantage that the forces arising in the vertical plane extending in the direction of the length of the rail are also comparatively small. Whilst in the case of three trolley carriages these forces must be transmitted to the rail solely by the central trolley, such force transmission occurs in the present case through both trolleys and these are widely spaced apart. In the transmission of forces acting in this plane to the rail the vertical distance between the point of application of force by the traction element, or by the drawn load, and the rail centre line is no longer of any importance at all.
  • motion-transmitting means are provided between the pivotable traction arm and the adjacent trackengaging trolley of the carriage, to pivot the traction arm, when passing through curves, in such a way that the traction element portion secured thereto will always extend parallel with the longitudinal axis of said adjacent trolley.
  • These motion-transmitting means thus cause the prevailing pivotal position of the traction arm to be guided smoothly and correctly by the adjacent track unit. In other words, in this case it is no longer necessary for the traction arm to be rotated by the forces arising as the traction element enters the traction element guides.
  • the traction arm is connected rigidly to a traction arm-supporting member which is mounted for rotation about a vertical pivot at the outer end of the laterally projecting boom, the motion-transmitting means which provide parallel guidance being provided between the end of the traction arm-supporting member nearest to the adjacent trolley and a laterally projecting extension lug on the adjacent trolley.
  • FIG; 1 is a plan view of a traction carriage in accordance with the invention
  • FIG. 2 is a section on the line IIII of FIG. 1, and
  • FIG. 3 is a plan view of an alternative form of traction carriage in accordance with the invention DETAILED DESCRIPTION
  • FIGS. 1 and 2 illustrate a traction carriage for a suspended mono-rail cable railway.
  • the track of this railway is of I-section rail and is indicated in FIG. 2 by the reference 1.
  • the trolleys of the carriage which are indicated by the reference numerals 2 and 3 respectively.
  • Each of these trolleys comprises a plurality of supporting wheels running on the lower rail flange and guide wheels engageable with the rail web, these wheels not being shown in detail.
  • the two trolleys 2 and 3 are secured by means of vertical pivot bolts 4 and 5 to a connecting beam 6 of the carriage, the trolleys being spaced apart longitudinally of the beam.
  • the connections between the trolleys 2 and 3 and the connecting beam 6 are moreover designed, in a known manner not here specifically illustrated, in such a way as to allow tilting movements of the trolleys 2, 3 relative to the connecting beam 6 in the direction of the length of the rail 1.
  • a laterally projecting boom 7 which is rigidly secured to the connecting beam 6 and whereon is mounted a traction arm 8 to be engaged by the traction element 9 with the aid of a traction arm blade 10, the plane of the latter containing the longitudinal axis of the traction element 9.
  • the traction arm 8 is mounted on a traction arm support member 11 which is connected to the laterally projecting boom 7 by means of a vertical pivot bolt 12.
  • This vertical pivot bolt 12 is arranged at the outer end of the laterally projecting boom 7.
  • the longitudinal axis of the pivot bolt 12 is arranged so as to extend through the traction element 9.
  • the traction arm 8 is rotatable, together with the traction arm support member 11 about a vertical axis which extends through the traction element 9.
  • the rotary movement of the traction arm 8 about its axis of rotation can, therefore, not be affected by any forces acting in the longitudinal direction of the traction element 9. Consequently the traction arm 8, subject to the guide forces applied to the traction arm blade 10 will always automatically adjust its position in such a manner that the blade 10 will pass smoothly and perfectly into and through the traction element guides which are not here specifically illustrated.
  • additional motion transmitting means are provided between the traction arm support member 11 and the trolley 2, whereby the rotary movements of the traction arm 8 will be guided in such a way that the plane of the traction arm blade 10 will adjust itself parallel with the longitudinal axis of the adjacent trolley 2.
  • rotation of the traction arm 8 by the guide forces acting on the blade 10 is here no longer necessary. Rather, the traction arm 8 will be appropriately rotated or pivoted by the trolley 2 which adapts to the course of the rail by its guide wheels.
  • the motion transmitting means comprise a link 14 secured by means of a vertical pivot bolt 13 to the boom 7 in the middle between the vertical pivot bolt 12 of the traction arm 8 and the vertical pivot bolt 4 of the trolley 2.
  • the link 14 has both ends thereof formed with elongate holes 15, 16 situated equidistantly relative to the bolt 13 and wherein engage vertical bolts l7, 18 provided on the traction arm support member 11 and on a laterally projecting lug 19 of the trolley 2.
  • the motion transmitting means comprise a gear wheel 20 mounted rotatably on the boom 7 for rotation about a vertical bolt 21 in the middle between the vertical bolt 12 of the traction arm 8 and the vertical bolt 4 of the trolley 2.
  • This gear wheel is meshingly engaged from both sides thereof by toothed segments 22, 23 provided respectively at the outwardly directed end of the extension lug 19 of the trolley 2 and at the end of the traction arm support member 11 which is directed towards the trolley 2.
  • a railway having a track, carriages supported on the track and a traction element extending longitudinally of the track at the position off-set laterally from the centre line of the track, the traction element being movable along the track to draw the carriages therealong,
  • a traction carriage comprising two track-engaging trolleys
  • a traction arm which is mounted on the boom, is pivotable relative to the boom about a third vertical axis extending through the traction element, and is secured to the traction element, whereby the traction arm and boom collectively manintain the spacing of the traction element from a longitudinal axis of the carriage.
  • said traction arm is rigidly-connected with a support member
  • the support member is connected with the boom for pivotal movement relative thereto about said third vertical axis
  • said motion-transmitting means is connected between said lug and an end of "the support member which is adjacent to said one trolley.
  • the fourth vertical axis is situated mid-way between the third vertical axis and the vertical axis of said one trolley
  • the link defines elongate openings situated on opposite sides of the fourth vertical axis and spaced equally therefrom, and
  • said support member and said lug are provided with respective pins which engage in respective ones of said openings.
  • the fourth vertical axis is situated mid-way between the third vertical axis and the vertical axis of said one trolley
  • each of said lug and support member is provided with a toothed segment which meshes with said

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Jib Cranes (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Toys (AREA)
US00363405A 1972-06-02 1973-05-24 Traction carriage for cable railway Expired - Lifetime US3839968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2226975A DE2226975C3 (de) 1972-06-02 1972-06-02 Laufkatze für eine Schienenbahn

Publications (1)

Publication Number Publication Date
US3839968A true US3839968A (en) 1974-10-08

Family

ID=5846678

Family Applications (1)

Application Number Title Priority Date Filing Date
US00363405A Expired - Lifetime US3839968A (en) 1972-06-02 1973-05-24 Traction carriage for cable railway

Country Status (6)

Country Link
US (1) US3839968A (de)
JP (1) JPS5218977B2 (de)
CS (1) CS189607B2 (de)
DE (1) DE2226975C3 (de)
GB (1) GB1388090A (de)
PL (1) PL86227B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398469A (en) * 1979-10-22 1983-08-16 Sante Zelli Laterally compensating radial trolleys
US6684473B1 (en) * 1999-10-21 2004-02-03 Honda Giken Kogyo Kabushiki Kaisha Method of and apparatus for manufacturing belt for continuously variable transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506414A1 (de) * 1985-02-23 1986-09-04 Maschinenfabrik Scharf Gmbh, 4700 Hamm Zuglaufwerk

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US876486A (en) * 1907-09-06 1908-01-14 Adolf Bleichert & Company Trolley-car for wire-rope or suspension railways.
US2958743A (en) * 1957-06-20 1960-11-01 American Monorail Co Shielded collector shoe and bus bar
US3049083A (en) * 1961-07-03 1962-08-14 Midwest Conveyor Company Inc Conveyor trolley
US3495720A (en) * 1966-04-19 1970-02-17 Carborundum Co Suspended conveyor trolley handling device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US876486A (en) * 1907-09-06 1908-01-14 Adolf Bleichert & Company Trolley-car for wire-rope or suspension railways.
US2958743A (en) * 1957-06-20 1960-11-01 American Monorail Co Shielded collector shoe and bus bar
US3049083A (en) * 1961-07-03 1962-08-14 Midwest Conveyor Company Inc Conveyor trolley
US3495720A (en) * 1966-04-19 1970-02-17 Carborundum Co Suspended conveyor trolley handling device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398469A (en) * 1979-10-22 1983-08-16 Sante Zelli Laterally compensating radial trolleys
US6684473B1 (en) * 1999-10-21 2004-02-03 Honda Giken Kogyo Kabushiki Kaisha Method of and apparatus for manufacturing belt for continuously variable transmission

Also Published As

Publication number Publication date
GB1388090A (en) 1975-03-19
DE2226975A1 (de) 1973-12-13
DE2226975C3 (de) 1979-10-25
JPS4955075A (de) 1974-05-28
DE2226975B2 (de) 1979-03-01
CS189607B2 (en) 1979-04-30
PL86227B1 (de) 1976-05-31
JPS5218977B2 (de) 1977-05-25

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