WO2003051655A1 - Vehicule routier et ferroviaire - Google Patents

Vehicule routier et ferroviaire Download PDF

Info

Publication number
WO2003051655A1
WO2003051655A1 PCT/ZA2002/000207 ZA0200207W WO03051655A1 WO 2003051655 A1 WO2003051655 A1 WO 2003051655A1 ZA 0200207 W ZA0200207 W ZA 0200207W WO 03051655 A1 WO03051655 A1 WO 03051655A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
accessory
wheels
railway
pair
Prior art date
Application number
PCT/ZA2002/000207
Other languages
English (en)
Inventor
Johannes Jacobus Fourie
Original Assignee
Johannes Jacobus Fourie
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 Johannes Jacobus Fourie filed Critical Johannes Jacobus Fourie
Priority to AU2002360865A priority Critical patent/AU2002360865A1/en
Publication of WO2003051655A1 publication Critical patent/WO2003051655A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F1/00—Vehicles for use both on rail and on road; Conversions therefor
    • B60F1/04—Vehicles for use both on rail and on road; Conversions therefor with rail and road wheels on different axles
    • B60F1/043—Vehicles comprising own propelling units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F1/00—Vehicles for use both on rail and on road; Conversions therefor
    • B60F1/04—Vehicles for use both on rail and on road; Conversions therefor with rail and road wheels on different axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F2301/00—Retractable wheels
    • B60F2301/04—Retractable wheels pivotally

Definitions

  • TITLE A Road and Rail Going Vehicle
  • This invention relates to a road vehicle, which is adaptable to drive on a railway track. More particularly, the invention relates to an accessory for a motor vehicle, a motor vehicle and a method of retrofitting a motor vehicle.
  • motor vehicles which are adaptable for driving on a railway track, use the friction of the rubber tyres of the driven wheels to, directly or indirectly, drive the vehicle on a railway track.
  • direct friction can cause severe wear on the tyre and that indirect friction usually requires complicated transmission systems.
  • Such vehicles usually comprise a road truck fitted with two pairs of railway wheels.
  • the railway wheels can be moved between a disengaged position, such that the railway wheels are out of contact with a railway track when the vehicle is to be driven on a road, and a railway track engaging position, such that the railway wheels engage a railway track when the vehicle is to be driven on a railway track and back again. All, or at least a portion of, the weight of the truck is carried by the railway wheels when the railway wheels are moved into the railway track engaging position.
  • an accessory for a motor vehicle including: a first pair of railway wheels which is adapted to be mounted near the front wheels of a motor vehicle; a second pair of railway wheels which is adapted to be mounted near the rear wheels of the vehicle; a first and second elevating means for moving the first and second pairs, respectively, of railway wheels initially into engagement with a railway track and thereafter further displacing the first and second pairs of railway wheels so as to elevate the vehicle onto the pairs of railway wheels to a position wherein the wheels of the vehicle are clear of the ground; and a transmission means, which is configured to extend between and interconnect a driven axle or drive shaft of the vehicle and one of the pairs of railway wheels such that rotation of the driven axle or drive shaft will cause a corresponding driving rotation of the said pair of railway wheels.
  • the transmission means may include a first gear, which is to be mounted so as to be rotated with a driven axle or drive shaft, a second gear which is to be mounted so as to cooperatively rotate with a railway wheel and a communication means for communicating the driving rotation from the first to the second gear.
  • the second gear may be mounted on a shaft or axle which interconnects one of the pairs of railway wheels.
  • the first and second gears may be in the form of sprocket wheels, preferably the first sprocket wheel being configured to be mounted on a brake drum of a driven wheel of the vehicle.
  • the sprocket wheels may typically be co-axially paired sprocket wheels.
  • the communication means may be a drive chain.
  • the back wheels of the vehicle may be driven which, in turn, drives the second pair of railway wheels, when the accessory is fitted to the vehicle.
  • the first pair of railway wheels may be adapted to be mounted between the front and rear wheels of the vehicle.
  • the first elevating means may include a pair of cylinder and piston arrangements, each arrangement being configured to be mounted on the underside of the vehicle in a generally vertical orientation.
  • Each cylinder may be mountable on the undercarriage of the vehicle with the piston extending downward.
  • the free end of the piston may be configured to receive rotatably the shaft, or axle, which interconnects railway wheels.
  • the piston may be hydraulically operable.
  • Each piston and cylinder arrangement may further include a tensile element configured to extend, towards the front end of the vehicle, from the shaft or axle to an attachment point on the underside of the vehicle. It will be appreciated that the tensile element provides a means for resisting impact shocks directed towards the rear of the vehicle when the vehicle drives on a railway track.
  • the second elevating means may include a support frame for supporting the second pair of railway wheels.
  • the support frame may include a pair of elongate members.
  • the members may be pivotally mountable to an undercarriage of the vehicle at one end, free ends of the members being configured to receive rotatably the shaft, or axle, which interconnects railway wheels.
  • the elevating means may further include an urging means for urging the second pair of railway wheels pivotally into engagement with the railway track and thereafter further displacing the second pair of railway wheels, in cooperation with the first elevating means, so as to elevate the vehicle onto the pairs of railway wheels to a position wherein the wheels of the vehicle are clear of the ground.
  • the urging means may be in the form of a piston and cylinder arrangement.
  • One end of the piston may be connected to the free end of the elongate member and the other end to the undercarriage of the vehicle.
  • the elevating means may further include a locking means for locking the support frame and railway wheels in position with the vehicle in the elevated position.
  • the elevating means may further be provided with a damping means for damping shock loads on the railway wheels.
  • the piston and cylinder arrangement may include the locking means and the damping means such as springs.
  • the piston may be hydraulically operable.
  • the first gear may be rotatable in an outer plane, between the wheel and the elongate member, and the second gear may be rotatable in an inner plane, between the pair of elongate members.
  • the transmission means may then also include an intermediate gear for transferring the transmission from the first gear in the outer plane to the second gear in the inner plane.
  • the transmission means may be in the form of a pair of first, second and intermediate gears, one for each driven rear wheel.
  • the accessory for a vehicle may further include a drive means in the form of a motor for driving the second pair of railway wheels, independently from the driven shaft or axle.
  • the drive means may be a motor, which may be hydraulically powered for driving the vehicle at low speeds over a railway track, instead of being driven by a driven shaft or axle of the vehicle, typically for railway inspections.
  • the accessory may also include a means for disengaging the drive means when the railway wheels are not driven by the drive means on a railway track.
  • the accessory may also include a means for disengaging the transmission means when the vehicle is not driven on a railway track by a driven shaft or axle of the vehicle.
  • the accessory may further include a locking arrangement for locking the suspension of both pairs of wheels of the vehicle in a compressed state, prior to elevating the vehicle onto the pairs of railway wheels. It will be appreciated that, when the weight of the vehicle is transferred from the wheels of the vehicle onto the railway wheels, the suspension will expand. The locking arrangement prevents such expansion, allowing less elevation of the vehicle onto the railway wheels with sufficient clearance of the wheels of the vehicle from the ground and the railway track.
  • the accessory may also include a pneumatic braking arrangement for the first pair of railway wheels.
  • the pneumatic braking arrangement may be connectable to a pneumatic circuit of the motor vehicle.
  • the drive means may be a hydraulically powered motor, which includes an adjustable hydrostatic valve for braking the second pair of wheels.
  • the pneumatic braking arrangement may be provided with a pneumatically compressed coil spring for engaging the brake when the pneumatic circuit is depressurised. It will be appreciated that this provides a failsafe breaking system to prevent a runaway situation.
  • the accessory may also include locking mechanisms for locking the first and second elevating means into position when they are not used and the vehicle is not in the elevated position.
  • the locking mechanism may include a limiter switch to prevent accidental lowering of the railway wheels while the first and second elevating means are locked into position.
  • a motor vehicle which includes an accessory for a motor vehicle as described above.
  • the vehicle may further be provided with a lifting device for lifting a person to reach overhead structures.
  • kits for adapting a road vehicle to be to be driven on a railway track may include components for an accessory for a road vehicle as described above.
  • a method of retrofitting a road vehicle as described above including the step of fitting an accessory to the road vehicle as described above.
  • Figure 1 shows a side view of motor vehicle in a road going state, in accordance with the invention
  • Figure 2 shows a side view of the motor vehicle in an elevated, railway going adapted state
  • Figure 3 shows a top perspective view of the motor vehicle
  • Figure 4 shows a top perspective view of the rear end of the vehicle
  • Figure 5 shows a bottom perspective view of the rear end of the vehicle.
  • Figure 6 shows a top perspective view of the front end of the vehicle.
  • reference numeral 10 generally refers to a motor vehicle in the form of a railway inspection truck, in accordance with the invention.
  • the motor vehicle 10 includes an accessory 12 fitted to the vehicle 10 such that the vehicle is adaptable to drive on a railway track.
  • the accessory 12 includes a first pair of railway wheels 14, which are mounted near the front wheels 16 of a motor vehicle 10 and a second pair of railway wheels 18, which are mounted near the rear wheels 20 of the vehicle 10.
  • the first pair of railway wheels 14 is mounted between the front 16 and rear 20 wheels of the vehicle 10.
  • the accessory 12 further includes a first elevating means 22 for moving the first pair of railway wheels 14 initially into engagement with a railway track and thereafter further displacing the railway wheels so as to elevate the vehicle 10, together with a second elevating means 27, onto the pairs of railway wheels 16 and 20 to a position wherein the wheelsl ⁇ and 20 of the vehicle 10 are clear of the ground.
  • the first elevating means 22 includes a pair of hydraulically operable cylinders 21 and piston 23 arrangements, each arrangement being configured to be mounted on the underside of the vehicle 10 in a generally vertical orientation.
  • Each cylinder 21 is mounted on the undercarriage 42 of the vehicle 10 with the piston 23 extending downward.
  • the free end of the piston 23 rotatably receives the shaft or axle 34, which interconnects the respective railway wheels 14 and 18.
  • Each cylinder 21 and piston 23 arrangement further includes a tensile element 25 configured to extend, towards the front end of the vehicle 10, from the free end of the piston 23 to an attachment point on the undercarriage 42 of the vehicle 10.
  • the accessory 12 includes a second elevating means 27 for moving the second pair of railway wheels 18 initially into engagement with a railway track and thereafter further displacing the railway wheels so as to elevate the vehicle 10, together with the first elevating means 22, onto the pairs of railway wheels 16 and 20 to a position wherein the wheels16 and 20 of the vehicle 10 are clear of the ground.
  • the accessory 12 further includes a transmission means 24, which is configured to extend between and interconnect the driven rear wheel axle 26 of the vehicle 10 and the second pair of railway wheels 18 such that rotation of the driven axle 26 will cause a corresponding driving rotation of the railway wheels 18.
  • the transmission means 24 includes a first gear 28, shown in Figure 5, in the form of a sprocket wheel, which is mounted on the brake drum 30 of the wheel 20, such that the first gear 28 is rotated with the driven axle 26.
  • a second gear 32 also in the form of a sprocket wheel, is mounted on a shaft or axle 34, which interconnects the railway wheels 18.
  • the transmission means 24 further includes a communication means in the form of a drive chain (not shown) for communicating the driving rotation from the first 28 to the second gear 32.
  • the elevating means 27 includes a support frame 38 for supporting the pair of railway wheels 18.
  • the support frame 38 includes a pair of elongate members 40, which are pivotally mounted to an undercarriage 42 of the vehicle 10 at one end while free ends of the members 40 are rotatably receive the axle 34 of the railway wheels 18.
  • the elevating means 27 further includes an urging means in the form of a pair of hydraulically operable pistons 44 for urging the members 40 pivotally into engagement with the railway track and thereafter further displacing the second pair of railway wheels 18 so as to elevate the vehicle 10, together with the first elevating means 22, onto the pairs of railway wheels 14 and 18 to a position wherein the wheels 16 and 20 of the vehicle are clear of the ground.
  • the elevating means 22 and 27 also includes a locking means (not shown) provided in each piston 23 and 44 for locking the railway wheels 14 and 18 in the elevated position.
  • the piston 23 and 44 of the elevating means 22 and 27 is further provided with a damping means for damping shock loads on the railway wheels 14 and 18.
  • the first gear 28 of the transmission means 24 is rotatable in an outer plane, between the wheel 20 and the elongate member 40, and the second gear 32 rotatable in an inner plane, between the pair of elongate members 40.
  • the transmission means 24 then also include an intermediate gear 46 for transferring the transmission from the first gear 28 in the outer plane to the second gear 32 in the inner plane.
  • the intermediate gear 46 is also in the form of a sprocket wheel 48, which is connected by a shaft, which extends rotatably through the elongate member 40.
  • the transmission means 24 is in the form of a pair of first 28, second 32 and intermediate gears 46, one of each for each driven rear wheel 20.
  • the accessory 12 further includes a drive means in the form of a hydraulically powered motor 52 for driving the second pair of railway wheels 18, independently from the driven axle 26.
  • the motor 52 is geared and configured for driving the vehicle 10 at low speeds over a railway track, instead of being driven by a driven axle 26 of the vehicle, typically for railway inspections.
  • the accessory 12 further includes a means (not shown) for engaging the drive means 52 when the railway wheels are driven by the drive means 52 on a railway track.
  • the accessory 12 also includes a means (not shown) for engaging the transmission means 24 when the vehicle 10 is driven on a railway track by a driven shaft or axle 34 of the vehicle 10.
  • the accessory 12 further includes a means (not shown) for disengaging the drive means 52 and transmission means 24 when the vehicle is driven on the road, when the vehicle is in a road going mode.
  • the means for disengaging the drive means 52, the means for engaging the transmission means 24 and the means for disengaging the drive means 52 and transmission means 24 is in the form of a gear selection arrangement (not shown).
  • the accessory also includes a pneumatic braking arrangement 56 for the first pair of railway wheels 16.
  • the pneumatic braking arrangement 56 is connected to a pneumatic circuit of the motor vehicle 10.
  • the drive means 52 is a hydraulically powered motor, which includes an adjustable hydrostatic valve for braking the second pair of wheels 18.
  • the pneumatic braking arrangement 56 is provided with a pneumatically compressed coil spring (not shown) for engaging the brake 58 with the wheel 14 when the pneumatic circuit is depressurised.
  • the accessory 12 also includes a locking mechanism (not shown) for locking the first 22 and second 27 elevating means into position when they are not used and the vehicle 10 is not in the elevated position.
  • the locking mechanism further includes a limiter switch (not shown) to prevent accidental lowering of the railway wheels 16 and 18 while the first 22 and second 27 elevating means are locked into position.

Abstract

La présente invention concerne un accessoire (12) destiné à un véhicule à moteur (10) qui comprend une première paire de roues ferroviaires (14) qui sont conçues pour être montées près des roues avants (16) d'un véhicule à moteur et une seconde paire de roues ferroviaires (18) qui sont conçues pour être montées près des roues arrières (20) de ce véhicule. Cet accessoire comprend aussi un premier (22) et un second (27) organe élévateur destiné à déplacer, respectivement, la première et la seconde paire de roues ferroviaire d'abord en contact avec une voie de chemin de fer, puis à déplacer à nouveau cette première et cette seconde paire de roues ferroviaires de façon à élever le véhicule placé sur ces paires de roues ferroviaire à une position dans laquelle les roues de ce véhicule ne touchent plus le sol. Cette invention concerne aussi un moyen de transmission (24).
PCT/ZA2002/000207 2001-12-14 2002-12-13 Vehicule routier et ferroviaire WO2003051655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002360865A AU2002360865A1 (en) 2001-12-14 2002-12-13 A road and railway going vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2001/10297 2001-12-14
ZA200110297 2001-12-14

Publications (1)

Publication Number Publication Date
WO2003051655A1 true WO2003051655A1 (fr) 2003-06-26

Family

ID=25589407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2002/000207 WO2003051655A1 (fr) 2001-12-14 2002-12-13 Vehicule routier et ferroviaire

Country Status (2)

Country Link
AU (1) AU2002360865A1 (fr)
WO (1) WO2003051655A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738134A (zh) * 2013-04-22 2014-04-23 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换升降装置
CN103738133A (zh) * 2013-04-22 2014-04-23 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换锁定装置
CN106800051A (zh) * 2015-11-26 2017-06-06 衡阳市利美电瓶车制造有限责任公司 一种公路铁路两用的电动牵引车
DE102017128697B3 (de) * 2017-12-04 2019-05-09 G. Zwiehoff GmbH Zweiwegefahrzeug zum Einsatz auf Schienen und Straßen
FR3106300A1 (fr) * 2020-01-21 2021-07-23 Mecarail Dispositif roulant pour transporteur rail/route
GB2611794A (en) * 2021-10-15 2023-04-19 Desmond Lewis Stephen Increased power emergency braking system for trains

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827898A (en) * 1930-11-10 1931-10-20 William J Laffey Vehicle for highway and railway travel
US2039489A (en) * 1933-03-15 1936-05-05 Kirwan Y Messick Transportation unit
US2157651A (en) * 1936-12-03 1939-05-09 Pennsvivania Railroad Company Road-rail vehicle
US2896553A (en) * 1955-10-04 1959-07-28 Alfred H Whisler Means for converting highway motor vehicles for railway travel
DE1100072B (de) * 1956-07-05 1961-02-23 Maschf Augsburg Nuernberg Ag Bremsbarer Antrieb eines Zweiwegefahrzeuges fuer Schienen- und Strassenverkehr
US3179066A (en) * 1960-07-07 1965-04-20 Toyo Kogyo Company Ltd Transmission and braking control for vehicles having both road and rail wheels
US5103740A (en) * 1990-02-28 1992-04-14 Masse Kenneth J Vehicle for road and rail operation with air suspension for adjusting weight on both the road wheels and rail wheels
DE4443943A1 (de) * 1994-12-09 1996-06-13 Schneider Walter Gmbh Co Kg Straßenfahrzeug für das Befahren von Straßen- und Schienenwegen
US5802980A (en) * 1997-04-07 1998-09-08 Dfm Enterprises, Inc. Vehicle drive system for road and railroad track
US6021719A (en) * 1997-11-10 2000-02-08 Kershaw, Jr.; Royce G. Mobile track vehicle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1827898A (en) * 1930-11-10 1931-10-20 William J Laffey Vehicle for highway and railway travel
US2039489A (en) * 1933-03-15 1936-05-05 Kirwan Y Messick Transportation unit
US2157651A (en) * 1936-12-03 1939-05-09 Pennsvivania Railroad Company Road-rail vehicle
US2896553A (en) * 1955-10-04 1959-07-28 Alfred H Whisler Means for converting highway motor vehicles for railway travel
DE1100072B (de) * 1956-07-05 1961-02-23 Maschf Augsburg Nuernberg Ag Bremsbarer Antrieb eines Zweiwegefahrzeuges fuer Schienen- und Strassenverkehr
US3179066A (en) * 1960-07-07 1965-04-20 Toyo Kogyo Company Ltd Transmission and braking control for vehicles having both road and rail wheels
US5103740A (en) * 1990-02-28 1992-04-14 Masse Kenneth J Vehicle for road and rail operation with air suspension for adjusting weight on both the road wheels and rail wheels
DE4443943A1 (de) * 1994-12-09 1996-06-13 Schneider Walter Gmbh Co Kg Straßenfahrzeug für das Befahren von Straßen- und Schienenwegen
US5802980A (en) * 1997-04-07 1998-09-08 Dfm Enterprises, Inc. Vehicle drive system for road and railroad track
US6021719A (en) * 1997-11-10 2000-02-08 Kershaw, Jr.; Royce G. Mobile track vehicle

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103738134A (zh) * 2013-04-22 2014-04-23 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换升降装置
CN103738133A (zh) * 2013-04-22 2014-04-23 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换锁定装置
CN103738133B (zh) * 2013-04-22 2015-09-30 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换锁定装置
CN103738134B (zh) * 2013-04-22 2016-03-09 湖北时瑞达重型工程机械有限公司 公铁两用车行走轮切换升降装置
CN106800051A (zh) * 2015-11-26 2017-06-06 衡阳市利美电瓶车制造有限责任公司 一种公路铁路两用的电动牵引车
DE102017128697B3 (de) * 2017-12-04 2019-05-09 G. Zwiehoff GmbH Zweiwegefahrzeug zum Einsatz auf Schienen und Straßen
FR3106300A1 (fr) * 2020-01-21 2021-07-23 Mecarail Dispositif roulant pour transporteur rail/route
GB2611794A (en) * 2021-10-15 2023-04-19 Desmond Lewis Stephen Increased power emergency braking system for trains
GB2611794B (en) * 2021-10-15 2023-10-11 Desmond Lewis Stephen Increased power emergency braking system for trains

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