US3727560A - Vehicle propulsion and guide truck system - Google Patents

Vehicle propulsion and guide truck system Download PDF

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Publication number
US3727560A
US3727560A US00096476A US3727560DA US3727560A US 3727560 A US3727560 A US 3727560A US 00096476 A US00096476 A US 00096476A US 3727560D A US3727560D A US 3727560DA US 3727560 A US3727560 A US 3727560A
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United States
Prior art keywords
rail
vehicle
frame
driving
motor
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US00096476A
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English (en)
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M Blemly
R Becker
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WEBB CO J
WEBB J CO
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WEBB CO J
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C13/00—Locomotives or motor railcars characterised by their application to special systems or purposes
    • B61C13/04—Locomotives or motor railcars characterised by their application to special systems or purposes for elevated railways with rigid rails

Definitions

  • ABSTRACT A transportation system in which wheeled carriers are guided by and driven along a plate-like rail member, mounted on edge on a supporting surface for the wheels of the carriers Each carrier has a pair of pinch rolls engaging opposite vertical sides of the rail, one of the rolls being driven by a motor obtaining power from a conductor bar or bars secured to the sides of the rail above the normal elevation of the pinch rolls to prevent the carrier from jumping the rail
  • An improved pivotal mounting of the motor and pinch rolls aids in maintaining driving engagement of the pinch rolls with the rail on horizontal and vertical curves.
  • This invention relates to improvements in monorail transportation systems employing a pinch roll type of drive for propelling a carrier vehicle along the monorail.
  • a pinch roll type of drive is one in whieh oppositely facing surfaces of a rail member are engaged between a pair of driving rolls or wheels of the vehicle.
  • Various forms of railways, both single and multiple rail, have been proposed employing this drive, examples being shown in U.S. Pat. No. 549,522; 627,565; 1,600,767 and others.
  • a railway accordintt claiml further comprsing mans iimiting pivotal movement of the frame.8c 003352 7.
  • the main object of the present invention is to provide an improved and simplified monorail system utilizing the pinch roll type of vehicle drive which will fulfill an existing need in the material handling field for a remotely operable, relatively inexpensive form of conveyance capable of safely travelling at speeds far above the maximum that can be attained with conventional belt conveyors and with chain propelled carriers.
  • the maximum speed of the fastest of such conventional conveyors is about 300 feet per minute, whereas the need is for speeds on the order of 1,500 feet per minute.
  • a transportation system or railway of the invention comprises a planar support such as a floor, a carrier vehicle having wheels engaging the support, and a plate-like rail having a pair of oppositely facing track surfaces mounted with these track surfaces extending substantially perpendicular to the plane of the support.
  • Driving means are provided on the vehicle, including an idler roller engaging one of the track surfaces, a driving roller engaging the opposite track surface, and a driving motor for rotating the driving roller, the driving motor being energized by power obtained from a conductor bar mounted on the rail by an electrical pickup unit on the vehicle.
  • the preferred form of rail construction is simple, inexpensive and easy to install in any desired path including horizontal and vertical curves.
  • Strips of sheet metal plate are used for the rail, with mounting brackets being secured at intervals to one edge thereof and a pair of conductor bars mounted on the sides or track surfaces of the plate adjacent the other edge thereof so as to project outwardly of the track surfaces and form a headed portion which serves to prevent the vehicle driving and idler rollers from jumping the rail.
  • the rail provides a tractive surface, a guide, and source of power for the vehicle.
  • Traction between the driving roller and rail is maintained, with automatic compensation for the variations encountered, particularly in traversing curved rail sections, by mounting the driving roller, idler roller and motor on a frame which is connected to the vehicle on a pivotal axis extending transversely to the track surfaces of the rail and perpendicular to the axes of rotation of the driving and idler rollers.
  • Means are provided for positioning this frame so that the axes of the driving and idler rollers extend substantially perpendicular to the support on which the vehicle travels, and so that when the vehicle encounters a vertical curve the frame is positioned so that the axes of the driving and idler rollers extend substantially along radial lines of the vertical curve.
  • the positioning means preferably consists of a roller carried by the frame and engaging the upper edge of the rail which thereby forms a guide or reference surface, and the pivotal axis of the frame is located below the centerline of the periphery of the driving roller so that the driving action of the driving roller produces a turning moment on the frame which normally urges the positioning roller into engagement with the upper edge of the rail.
  • Traction between the driving roller and rail is also improved by mounting the driving roller and driving motor on a bracket connected to the frame by a pivot located so that the driving action of the driving roller produces a turning moment on the bracket tending to urge the driving roller into firm engagement with the track surface contacted thereby.
  • Positive tracking of the vehicle on the rail is provided by a pair of guide rolls spaced longitudinally on the vehicle from the driving and idler rollers.
  • low voltage power is used in. the system for safety, simplicity and the ability to remotely control the vehicles by methods similar to those used on model railroads.
  • FIG. 1 is a schematic plan view of a representative track layout
  • FIG. 2 is a plan view of the underside of a carrier vehicle
  • FIG. 3 is a side elevation of the vehicle
  • FIG. 4 is an end elevation thereof taken in the direction of the arrow 4 of FIG. 2;
  • FIG. 5 is an enlarged sectional elevation on the line 55 of FIG. 2 showing the rail construction, conductor bar and pickup, and guide roll mounting;
  • FIG. 6 is an enlarged sectional plan view of the pinch roll drive construction taken as indicated by the line 66 of FIG. 7;
  • FIG. 7 is a sectional elevation taken as indicated by the line 7--7 of FIG. 6;
  • FIG. 8 is an enlarged sectional plan view of the concluctor bar and pickup construction taken on the line 8-8 of FIG. 9;
  • FIG. 9 is a side elevation of the rail, conductor bar and pickup construction taken as indicated by the line 9-9 of FIG. 8;
  • FIG. is an enlarged plan view of one end of the vehicle showing a frame connected thereto on a transverse axis and carrying an idler roller, driving roller and driving motor,
  • FIG. 11 is a transverse elevation of the construction shown in FIG. 10;
  • FIG. 12 is a side elevation of the construction shown in FIG. 10.
  • a relatively small carrier vehicle 10 is shown, having a U-shaped, open-sided load compartment 11 with a width greater than its length.
  • the track is designed to be installed on a suitable supporting surface 12 including an existing floor, and as shown in FIGS. 1, 3 and 5, consists of a single rail 14 which may be made of lengths of steel plate for example, 54 in. X 4 in. in section one edge 15 of which is welded at suitable intervals to mounting plates 16 which are secured to the supporting surface 12 as shown in FIG. 5 so that the rail 14 projects above the surface 12 substantially perpendicular to the plane thereof.
  • a pair of conductor bars 18 and 19 are secured to the rail 14 adjacent the upper edge 20 thereof, the conductor bars being spaced from the rail 14 by insulating strips 21 and projecting outwardly of the opposite side faces 22 and 23 of the rail which form the track surfaces.
  • This track construction is relatively inexpensive, flexible, and may easily be shaped to any configuration desired for horizontal or vertical curves.
  • FIG. 1 illustrates a representative loop-type of track layout, including a branch line 24 connected to a main line 25 by switches 27.
  • Each vehicle 10 includes a base or frame 26, best shown in FIG. 2, on which are mounted three supporting wheels 28, a pinch roll drive assembly 30, a pair of guide rolls 32 and an electrical pickup assembly 34.
  • the supporting wheels 28 may be fixed or castering, or a combination thereof, and for vehicles with a longer wheel base, a four rather than a three wheel suspension would ordinarily be employed. Where a caster type of wheel is used, the castering action should preferably be dampened in order to minimize flutter at high speeds.
  • the pinch roll drive assembly 30 includes a reaction or idler roll 36 mounted on an axis fixed to the vehicle frame 26, and a driving roll 38 and motor 40 mounted as a unit for limited rotation about a pivot 41 on the vehicle frame.
  • the motor 40 is preferably a type operable by a relatively low voltage so that no insulation is required for the conductor bars 18 and 19.
  • a series A boss 44 on the vehicle frame 26 supports the pivot pin 41 to which is connected a mounting bracket 45 for the drive roll 38 and motor 40.
  • the mounting bracket 45 includes a portion 46 (FIG. 7), forming a bearing for a drive roll shaft 47, and a vertical plate portion 48 to which the motor base 49 is secured.
  • a spring 50 mounted in a recess 51 in the boss 44, bears against the plate portion 48 of the bracket and normally biases the bracket in a counter-clockwise direction about the pivot, as viewed in FIG. 6, urging the drive roll 38 against the track surface 22.
  • This spring biased movement of the bracket 45 is limited by engagement between the bracket and boss in the area 52.
  • the axis defined by the pivot pin 41 is located between the drive roll shaft 47 and the center of the motor 40.
  • a driving belt 54 connects the motor output pulley 55 with a pulley 56 secured to the drive roll shaft 47.
  • the bracket 45 can pivot in the opposite direction to relieve excessive pinching between the drive roll 38 and rail surface 22 which would tend to stall the motor. Pivotal movement in this direction collapses the spring 50, and is limited by engagement between the plate portion 48 of the bracket 45 and the boss 44 at the portion 62 of the latter.
  • the guide rolls 32 provide positive tracking. Each of these rolls 32 is mounted as shown in FIG. 5 on a boss 66 depending from the vehicle frame 26, and clearance is provided between the rolls 32 and rail surfaces 22 and 23, as indicated at 67, sufficient to prevent binding on curves. However, the guide rolls 32 are preferably overlapped by the conductor bars 18 and 19, as are the idler and drive rolls 36, 38 to prevent the vehicle from jumping the rail 14.
  • Any tendency of the vehicle to leave the rail at high speeds may also be minimized by mounting the drive roll 38 at a slight angle 68 to the vertical, as illustrated in FIG. 3.
  • This crab angle may be on the order of one and a half two degrees so that there is little scuffing action on the drive roll 38 but at the same time a positive force component is obtained tending to keep the vehicle on the surface 12.
  • the pickup assembly 34 as schematically illustrated in FIGS. 2 and 4, may consist of a pair of resilient wipers 70 and 71, the wiper70 engaging one of the conductor bars 18 or 19 to obtain current for the motor 40, and the wiper 71 contacting a side surface 22 or 23 of the rail to complete a circuit to ground.
  • the other conductor bar 18 or 19 may be used for control purposes.
  • the motor circuit may be completed across the bus bars 18 and 19, a pickup assembly engaging each.
  • FIGS. 5, 8 and 9 A preferred form of pickup assembly is illustrated in FIGS. 5, 8 and 9.
  • a carbon shoe 74 having two longitudinally spaced conductor bar engaging portions 75 and 76, is connected by a pivot 77 to a bracket 78 of insulating material which in turn is secured .by a pivot pin 79 to a boss 80 on the vehicle frame 26.
  • a spring 82 is connected to the bracket 78 and to a second boss 83 on the vehicle frame.
  • a lead wire 84 is secured to the shoe 74 as shown in FIG. 9.
  • FIGS. -12 illustrate a preferred form of construction of the vehicle for a railway which incorporates vertical curves in the track system. Parts of this construction which correspond to those previously described are identified by the same reference numerals.
  • the vehicle 90 of FIGS. 10-12 has a rectangular tubular framework 92 supporting a load carrying platform 93 which is broken awayin FIG. 10.
  • Means for driving the vehicle along the rail 14 include an idler roller 94 engaging the track surface 22, a driving roller 96 engaging the track surface 23 and a driving motor 98 .operatively connected with the driving roller 96 by a belt 99 engaging asprocket 100 on the motor shaft 101 l and a sprocket 102 which is mounted on a shaft 103 with the drive roller 96, as best shown in FIG. 11, the sprocket 102 being broken away in FIG. 10. All these driving components are mounted on a frame 104, the idler roller 94 being secured to a shaft 106 carried by a portion 107 (FIG.
  • bracket 108 is U-shaped when viewed in elevation as in FIG. 12 and the portions109 of the frame are vertically spaced, as best seen in FIG. 11.
  • the frame 104 is mounted between a pair of brackets 1 12 and 113, which depend from the frame work 92, by pivot bolts 114 which define a pivotal axis extending transversely to the rail member 14 and perpendicular to the axes 103 and 106 of the drive and idler rollers, and the frame 104 is free to rock about this pivotal axis.
  • the positioning means includes a sensing roller 116 mounted on a U-shaped bracket portion 118 of the frame 104 and engaging a guide surface formed by the upper edge of the rail 14.
  • the sensing roller 116 is located forwardly of the pivotal axis of the frame 104, defined by the pivot bolts 114, with relation to the forward direction 120 of movement of the vehicle; and, as best shown in FIGS.
  • this pivotal axis of the frame 104 is spaced vertically below the centerline of the periphery of the driving roller 96.
  • the driving action of the driving roller 96 in propelling the vehicle in the forward direction 120 produces a turning moment on the frame 104 which tends to maintain the sensing roller 116 in engagement with the guide surface 20.
  • the sensing roller 116 is thus able to detect any vertical change in the contour of the track 14 and cause the frame 104 to rock so that the axes of the idler and driving rollers 94 and 96 are maintained in substantially perpendicular relation to the supporting surface 12 and in substantially radial relation to a vertical curve in the track.
  • the vehicle is thereby able to follow vertical curves in the track without any tendency to drive into the supporting surface and stall in negotiating the transition into an ascending vertical curve, and without any tendency to climb off the rail in negotiating the transition into a descending curve.
  • Pivotal movement of the frame 104 is limited by suitable means such as the trailing roller 122 carried by a bracket portion 124 of the frame 104 and engageable' with the upper rail surface 20.
  • the driving motor 98 and driving roller 96 are mounted on the bracket 108 connected to the frame 104 by the pivot pin 110.
  • This pivot pin is located forwardly of the shaft 103 of the driving roller 96 with relation to the forward direction of vehicle travel, and outwardly of the shaft 103 with relation to the track surface 23 engaged by the driving roller 96.
  • the driving action of the driving motor produces a turning moment on the bracket 108 which urges the periphery of the drivingroller into engagement with the track surface 23, pinching the track surfaces between the driving and idler roller and resulting in improved traction.
  • a spring 126 mounted between the frame 104 and bracket108 normally urges the periphery of the driving roller 96 into contact with the track surface: 23. Once in contact with the track surface, the driving roller produces the turning moment on the bracket 108 and pinching action described above, and the force of the spring 126 is not relied upon to improve traction.
  • the pin 110 is located between the driving roller shaft 103 and the center of mass of the driving motor.
  • driving means on the vehicle including a roller engaging one of the track surfaces, a driving roller engaging the opposite track surface, and a driving motor operatively connected with the driving roller;
  • pivot means connecting the frame to the vehicle for movement on a pivotal axis extending transversely to the rail and parallel to the supporting surface;
  • the positioning means includes a sensing roller carried by the frame, and a guide surface extending along the path of vehicle travel for engagement by the sensing roller.
  • a railway according to claim 2 wherein the pivotal axis defined by the pivot means connecting the frame to the vehicle is spaced vertically from the center line of the periphery of the driving roller whereby the driving action of the driving roller produces a turning moment on the frame tending to maintain the sensing roller in engagement with the guide surface.
  • sensing roller is mounted forwardly of the pivotal axis of the frame with relation to the forward direction of vehicle travel, and the pivotal axis of the frame is spaced below the centerline of the periphery of the driving roller whereby the driving action of the driving roller produces a turning moment on the frame which urges the sensing roller into engagement with said upper rail surface.
  • a railway according to claim 1 further comprising means limiting pivotal movement of the frame.
  • a railway according to claim 6 wherein the means limiting pivotal movement of the frame comprises a motion limiting member carried thereby and a guide surface extending along the path of vehicle travel engageable by said motion limiting member.
  • a railway according to claim 1 further comprising a bracket to which the driving roller and driving motor are secured, and a pivot connecting the bracket to the frame, the pivot extending parallel to the axis of rotation of the drive roller.
  • a railway according to claim 8 wherein the pivot connecting the bracket to the frame is located between the axis of the driving roller and the center of mass of the driving motor.
  • a railway according to claim 10 further comprising resilient means acting on the bracket to urge the driving roller into contact with said track surface.
  • driving means on the vehicle including an idler roller engaging one of the track surfaces, a driving roller engaging the opposite track surface, a driving motor operatively connected with the driving roller, a bracket to which the driving motor is secured and on which the driving roller is mounted on a rotational axis, the driving motor having a center of mass displaced from the rotational axis of the driving roller in a direction longitudinally of the rail, and pivot means connecting the bracket to the vehicle on a pivotal axis extending generally perpendicular to the supporting surface and located on the bracket in said longitudinal direction between the rotational axis of the driving roller and the center of mass of the motor.
  • a railway according to claim 12 further including means for limiting pivotal movement of the motor and driving roller.
  • a railway vehicle having frame structure
  • driving means including a frame, a pair of pinch rolls mounted on the frame on axes spaced transversely of the vehicle, a driving motor operatively connected with one of the pinch rolls, and means connecting the frame to the frame structure for movement on a pivotal axis extending in a direction normal to the direction of the axes of the pinch rolls;
  • the driving means includes a bracket pivotally secured to the frame, the bracket having means for supporting the driving motor and the one pinch roll operatively connected thereto.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US00096476A 1970-12-09 1970-12-09 Vehicle propulsion and guide truck system Expired - Lifetime US3727560A (en)

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US9647670A 1970-12-09 1970-12-09

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US (1) US3727560A (Direct)
BE (1) BE776419R (Direct)
BR (1) BR7108158D0 (Direct)
CA (1) CA945816A (Direct)
DE (1) DE2161157A1 (Direct)
FR (1) FR2117945B2 (Direct)
GB (1) GB1324344A (Direct)
IT (1) IT988044B (Direct)
ZA (1) ZA717935B (Direct)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807312A (en) * 1972-02-01 1974-04-30 B Flodell Vehicle propulsion, track, and switch system
US3886869A (en) * 1974-06-05 1975-06-03 Rohr Industries Inc Thrust responsive pinch wheel drive mechanism
US3908554A (en) * 1973-11-15 1975-09-30 Schwarzkopf Anton Fa Self-propelled amusement-park rail vehicle
US3915094A (en) * 1971-11-11 1975-10-28 Mitsubishi Heavy Ind Ltd Multi-directional railway vehicle
US3935922A (en) * 1974-07-16 1976-02-03 Lear Siegler, Inc. Vehicle guidance mechanism
US4204478A (en) * 1978-04-18 1980-05-27 Westinghouse Electric Corp. Transportation vehicle flat tire safety apparatus
US4423685A (en) 1980-08-16 1984-01-03 Mannesmann Aktiengesellschaft Crane trolley
DE3603964A1 (de) * 1985-02-13 1986-08-14 Francesco San Macario Varese Canziani Selbstfahrender wagen fuer eine sortieranlage
US4685398A (en) * 1984-08-14 1987-08-11 Kissel Jr Waldemar F Comprehensive unit transportation system
US4712965A (en) * 1984-08-08 1987-12-15 Francesco Canziani Plant for sorting items, with self driven carriages
US4722430A (en) * 1984-02-03 1988-02-02 Francesco Canziani Carriage for sorting-machines in particular, with independently actioned tiltable plate
US4726464A (en) * 1985-01-29 1988-02-23 Francesco Canziani Carriage with tiltable plates, for sorting machines in particular
US5063857A (en) * 1984-08-14 1991-11-12 Kissel Jr Waldemar F Comprehensive unit transporation system
US8291829B1 (en) 2010-03-30 2012-10-23 Honda Motor Co., Ltd. Motorized transport cart and associated part transport system and method
CN113059961A (zh) * 2021-03-25 2021-07-02 中车青岛四方车辆研究所有限公司 用于轨道交通巡检机器人的轮对
CN114132355A (zh) * 2021-12-03 2022-03-04 山东东铁动力科技有限公司 用于侧导向轨道运行车辆的牵引救援车及其导向前进方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19958445A1 (de) * 1999-12-03 2001-06-13 Siemens Ag Elektromotorischer Antrieb für Schienenfahrzeuge

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915094A (en) * 1971-11-11 1975-10-28 Mitsubishi Heavy Ind Ltd Multi-directional railway vehicle
US3807312A (en) * 1972-02-01 1974-04-30 B Flodell Vehicle propulsion, track, and switch system
US3908554A (en) * 1973-11-15 1975-09-30 Schwarzkopf Anton Fa Self-propelled amusement-park rail vehicle
US3886869A (en) * 1974-06-05 1975-06-03 Rohr Industries Inc Thrust responsive pinch wheel drive mechanism
US3935922A (en) * 1974-07-16 1976-02-03 Lear Siegler, Inc. Vehicle guidance mechanism
US4204478A (en) * 1978-04-18 1980-05-27 Westinghouse Electric Corp. Transportation vehicle flat tire safety apparatus
US4423685A (en) 1980-08-16 1984-01-03 Mannesmann Aktiengesellschaft Crane trolley
US4722430A (en) * 1984-02-03 1988-02-02 Francesco Canziani Carriage for sorting-machines in particular, with independently actioned tiltable plate
US4712965A (en) * 1984-08-08 1987-12-15 Francesco Canziani Plant for sorting items, with self driven carriages
US4685398A (en) * 1984-08-14 1987-08-11 Kissel Jr Waldemar F Comprehensive unit transportation system
US5063857A (en) * 1984-08-14 1991-11-12 Kissel Jr Waldemar F Comprehensive unit transporation system
US4726464A (en) * 1985-01-29 1988-02-23 Francesco Canziani Carriage with tiltable plates, for sorting machines in particular
DE3603964A1 (de) * 1985-02-13 1986-08-14 Francesco San Macario Varese Canziani Selbstfahrender wagen fuer eine sortieranlage
AU587227B2 (en) * 1985-02-13 1989-08-10 Francesco Canziani Self-driven carriage, for sorting plants
AT394703B (de) * 1985-02-13 1992-06-10 Canziani Francesco Selbstfahrender wagen
US8291829B1 (en) 2010-03-30 2012-10-23 Honda Motor Co., Ltd. Motorized transport cart and associated part transport system and method
CN113059961A (zh) * 2021-03-25 2021-07-02 中车青岛四方车辆研究所有限公司 用于轨道交通巡检机器人的轮对
CN114132355A (zh) * 2021-12-03 2022-03-04 山东东铁动力科技有限公司 用于侧导向轨道运行车辆的牵引救援车及其导向前进方法
CN114132355B (zh) * 2021-12-03 2023-05-26 山东东铁动力科技有限公司 用于侧导向轨道运行车辆的牵引救援车及其导向前进方法

Also Published As

Publication number Publication date
GB1324344A (en) 1973-07-25
FR2117945A2 (Direct) 1972-07-28
FR2117945B2 (Direct) 1973-06-29
ZA717935B (en) 1972-08-30
DE2161157A1 (de) 1972-07-06
IT988044B (it) 1975-04-10
AU3621671A (en) 1973-05-31
BR7108158D0 (pt) 1973-03-29
CA945816A (en) 1974-04-23
BE776419R (fr) 1972-04-04

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