CA1332888C - Rail bogies - Google Patents
Rail bogiesInfo
- Publication number
- CA1332888C CA1332888C CA 616449 CA616449A CA1332888C CA 1332888 C CA1332888 C CA 1332888C CA 616449 CA616449 CA 616449 CA 616449 A CA616449 A CA 616449A CA 1332888 C CA1332888 C CA 1332888C
- Authority
- CA
- Canada
- Prior art keywords
- platform
- bogie
- trailer
- semi
- wheel
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D3/00—Wagons or vans
- B61D3/10—Articulated vehicles
- B61D3/12—Articulated vehicles comprising running gear interconnected by loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D3/00—Wagons or vans
- B61D3/16—Wagons or vans adapted for carrying special loads
- B61D3/18—Wagons or vans adapted for carrying special loads for vehicles
- B61D3/182—Wagons or vans adapted for carrying special loads for vehicles specially adapted for heavy vehicles, e.g. public work vehicles, trucks, trailers
- B61D3/184—Wagons or vans adapted for carrying special loads for vehicles specially adapted for heavy vehicles, e.g. public work vehicles, trucks, trailers the heavy vehicles being of the trailer or semi-trailer type
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A rail bogie is disclosed, which comprises:
a bogie truck having an axle frame and two pairs of railroad wheels, a platform and a lift assembly between the platform and the bogie truck. The platform and the lift assembly are operatively interconnected so that the assembly may raise or lower the platform. A
suspension supports the lift assembly from the bogie truck. Centrally of the platform, between the pairs of bogie wheels, there is provided a fifth wheel intended to receive a coupling king pin provided at the front end of a semi-trailer or the like road vehicle. The front end of the platform has an inclined foot, preferably integrally provided at the lower end of a vertical leg integral with and depending from one end of the platform.
This inclined leg is also provided with a fifth wheel which is intended to be coupled with another coupling king pin provided at the back end of another semi-trailer or the like road vehicle.
a bogie truck having an axle frame and two pairs of railroad wheels, a platform and a lift assembly between the platform and the bogie truck. The platform and the lift assembly are operatively interconnected so that the assembly may raise or lower the platform. A
suspension supports the lift assembly from the bogie truck. Centrally of the platform, between the pairs of bogie wheels, there is provided a fifth wheel intended to receive a coupling king pin provided at the front end of a semi-trailer or the like road vehicle. The front end of the platform has an inclined foot, preferably integrally provided at the lower end of a vertical leg integral with and depending from one end of the platform.
This inclined leg is also provided with a fifth wheel which is intended to be coupled with another coupling king pin provided at the back end of another semi-trailer or the like road vehicle.
Description
CROSS-REFERENCE
This application is a division of application 561,449 filed on March 15, 1988.
BACKGROUND OF THE INVENTION
Field of the invention The present invention relates to twin-axle rail bogies adapted for connecting semi-trailers and the like road vehicles together into trains for riding on rails.
Description of the p~ior art Rail bogies, known in the trade as RoadRailers, had fallen into near oblivion in the 1950s and had operated in relative obscurity until recently. But they have since then been updated and are now knowing a strong revival, possibly due to less stringent regulations from transport authorities and, perhaps more so, due to a more aggressive marketing approach from the railway industry, desiring to recapture traffic lost long ago to highway carriers such as semi-trailers.
A brief history of a new rail bogie of this type is given in the September 1987 issue of Gazette International (page 605). It is a twin-axle bogie provided with a locking mechanism for joining the bogie and a semi-trailer together. At the rail transfer site, the semi-trailer is moved on the track and its body lifted by its own pneumatic suspension to allow the rail bogie to be rolled beneath the trailer body which is then lowered into position on the rail bogie, the trailer wheels being thereafter lifted further to clear the track safely. The back of the semi-trailer is also provided with a special coupler so that a train of semi-trailers can be formed by having the back end of one trailer fitted to the rail bogie, in the manner aforesaid, and the front end of the next trailer hooked to the coupler at the back 13~888 end of the preceding trailer. The coupling is efficient but the hooking procedure is time consuming and complex.
Another type of "RoadRailer" is described in the September 1987 issue of the magazine Traffic Management. In this case, the rail bogie is secured to the body of the trailer, between each pair of tire wheels. Once the trailer is moved on the railway track, the bogie is lowered to raise the trailer wheels sufficiently to clear the track safely.
Several trailers may be end connected together to form a train. In this case, all trailers are equipped permanently with rail bogies which is an expensive method of road-rail transportation.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a twin-axle rail bogie that can join semi-trailers together end-to-end in an easy and simple procedure, particularly using its own lifting power rather than using that of one of the semi-trailer to be connected. Also, the rail bogie of the invention is a unit independent of the semi-trailer, which renders road-rail transportation less expensive.
More specifically, the rail bogie of the invention comprises a bogie truck having a frame on which railroad wheels are mounted, a platform and a lift assembly between the platform and the bogie truck. The platform and the lift assembly are operatively inter-connected so that the assembly may raise or lower the platform. A suspension may be used to support the lift assembly from the bogie truck.
The platform carries a first fifth wheel preferably between the bogie wheels, in order to receive a coupling king pin provided at the front end of a semi-trailer or a simular road vehicle. The platform also carries a second fifth wheel, preferably mounted on an inclined foot in integrally provided at the lower end of a vertical leg integral with an depending from one end of the platform. This second fifth wheel is intended to be coupled with another connection pin provided at the back end of another semi-trailer or the like road vehicle.
In a preferred form, the rail bogie has a vertical leg which is integral with and depends from the aforesaid one end of the platform; the inclined foot being integrally provided at the lower end of this leg.
Another object of the invention is to provide a combination of a rail bogie as broadly described above and a road vehicle comprising; a vehicle body, a hooking block secured to the rear end of the body, and a coupling king pin fixed to the block and lockingly engaged with the second fifth wheel.
Other features and advantages of the invention will become apparent from the description that follows of a preferred embodiment, having reference to the appended drawings.
IN THE DRAWINGS
Figure 1 is a diagrammatic side elevation view, partly in cross-section, of a twin-axle rail bogie made according to the invention;
Figure 2 is a diagrammatic plan view of the wheel bogie but including the worm drive;
Figure 3 is a rear view of the rail bogie from the right end of Figures 1 and 2;
133288~
Figure 4 is a diagrammatic side partial side elevation view of the semi-trailer shown coupled to the rear end of a road vehicle;
Figure 5 is a diagrammatic side elevation view of a train of semi-trailers joined by rail bogies, made according to the invention, and Figure 6 is a diagrammatic side elevation view of a train drive unit or engine, where the train includes a road trailer.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring particuIarly to Figs. 1 to 3, the twin-rail bogie 1 shown comprises a rail bogie truck 2 including an H frame 3 having a central transverse web 5 and two lateral flanges 7 carrying two pairs of wheels 9, through axles 10 and bearings 11. A lift assembly 13 is provided above the truck 2, being supported by a standard pneumatic suspension 15 including two com-pressed air balloons 17 on the web 5. The lift assembly 13 supports, in turn, a platform 19.
Means known per se may be provided for keeping the frame 3 of the rail bogie truck 2 in permanent alignment with the platform 19. Such means may consist of free jacks 20 whose ends are respectively connected to the frame 3 and platform 19 about horizontal pivots 20a.
The lift assembly 13 has a top plate 21, located beneath the platform 19, formed with four corner apertures 23. Beneath the top plate 21 are four drive gears, more particularly worm wheels 25, each having a central hub 27 formed with a threaded bore;
hubs 27 being rotatably mounted in the apertures 23 of the top plate 21 through suitable bearings (not shown).
The worm wheels 25 and their hubs 27 ~re rotated by means of worms 29 journaled in bearings 31 fixed to and beneath the top plate 21. The worms are, in turn, rotated by a hydraulic motor 33, through a conventional differential 35. Finally, means in the form of four threaded bolts 37, having one end made fast with the platform 19 and the other end threaded in the hubs 27, provide the required driving connection to ensure raising and lowering of the platform 19 when the worm wheels 25 are rotated.
The worm wheels 25, the worms 29, the motors 33 and the differentials 35 are supported by suitable brackets 39 appropriately removably fixed to the top plate 21; the worm wheels 25 being carried on the brackets 39 by means of thrust bearings (not shown).
A first conventional fifth wheel 41 is mounted on the platform 19 centrally between the two pairs of wheels 9. As is known, the fifth wheel 41 has a generally U-shaped heavy cast steel bed-plate 43 (Fig. 3) of which the side branches 45 form sloping ramps and define therebetween a V opening leading into a central king pin aperture 47, closable by a king pin lock in the form of a ring 49. The aperture 47 receives a king pin for coupling purpose, as will be seen hereinafter. The bed-plate 43 is pivoted on a rocker pin 51 extending crosswise of the platform 19, providing a swinging movement between the semi-trailer and the platform 19. The outer ends of the rocker pin 51 are supported in pillow blocks 64 bolted to the platform 19.
There is provided, at the front end of the rail bogie, a foot 55 that is upwardly inclined at an angle of about 15 to 20 and is preferably made solid with the lower end of a vertical leg 57, itself solid with the platform l9, as by being cast together. A
second fifth wheel 59, of the same construction as the ~332888 first fifth wheel 51, is provided on this foot 55. Both fifth wheels 41, 59 cooperate with king pin means, one such means 61 being shown diagrammatically in Figure 4.
As is known, such means 61 is essentially a flat heavy steel plate 61 having a king pin (not shown) at its center for locking into the locking aperture of the lower fifth wheel 59. Plate 61, in this case, is fixed to the lower face of a hooking block 62, which lower face is inclined at the same angle as the foot 55. Block 62 replaces the rear bumper of a trailer body 64. The upward inclination of the foot 55 allows an appreciable portion of the puIl force necessary to move the semi-trailer to be borne by the leg 57 rather than being borne by the king pin. The front edge 63 of the plate 61 is turned up approximately 45 to form a skid sliding on the bed plate of the lower fifth wheel 59 during engagement of the trailer body 64 with the rail bogie 1. The aforesaid king pin, extending down from the upper fifth wheel plate 61, is then housed and locked in the fifth wheel bed-plate aperture. The same description applies with respect to the first fifth wheel 41 on the platform 19 except that here the cor-responding king pin is the standard pin mounted directly at the front end of a semi-trailer body.
Figure 5 illustrates a train formed of a combination of three semi-trailers 65, 69, 71, a road tractor 73 and a diesel engine semi-trailer 67 operable from the road tractor 73 and of which a description is given hereinbelow. In this example of use of a rail bogie made according to the invention, two such bogies A and B are moved toward the tractor 73 with their inclined feet 55 coming under the tractor front and rear blocks 62. The semi-trailer 65 is then moved toward the bogie B and thereafter the lift assemblies 13 are actuated to raise both the tractor 73 and the front end of the semi-trailer 65 for interengagement and locking of the relevant fifth wheels and king pin and for lifting the tractor wheels 74 completely off the railroad track. At that time, the landing gear 75 of the semi-trailer 65 is retracted, as shown. Connection of the rail bogie C to the rear end of the semi-trailer 65 and the front end of the engine semi-trailer 67 is obtained in the same manner.
The next bogie D is of special construction, more like the one described in the Traffic Management magazine mentioned above. It has its front end permanently secured to the rear end of the engine semi-trailer 67 while its rear end has a fifth wheel interlocked with a king pin at the front end of the semi-trailer 67. It is provided with a pair of rail-road driving wheels 77 and a pair of road wheels 79 with pneumatic tires. Once the two semi-trailers 67, 69, are connected, through the fifth wheel, the road wheels 79 are lifted up from the railroad track. Finally, hooking of the rear end of the semi-trailer 69 and the front end of the semi-trailer 71 is obtained through the rail bogie E in the same manner as described above with respect to the rail bogies A, B and C.
Fig. 6 is a diagram of the special semi-trailer 67 for driving the train, being controlled from the tractor 73 as said before. It comprises a diesel engine 79, with a fuel tank 80, operating an electric generator 81 and a pneumatic pump 82 pressurizing air in an air tank 83, theair serving for actuating the brakes 85 of all of the wheels 9 and 77. The latter are actuated by electric motors fed from the generator 81.
This application is a division of application 561,449 filed on March 15, 1988.
BACKGROUND OF THE INVENTION
Field of the invention The present invention relates to twin-axle rail bogies adapted for connecting semi-trailers and the like road vehicles together into trains for riding on rails.
Description of the p~ior art Rail bogies, known in the trade as RoadRailers, had fallen into near oblivion in the 1950s and had operated in relative obscurity until recently. But they have since then been updated and are now knowing a strong revival, possibly due to less stringent regulations from transport authorities and, perhaps more so, due to a more aggressive marketing approach from the railway industry, desiring to recapture traffic lost long ago to highway carriers such as semi-trailers.
A brief history of a new rail bogie of this type is given in the September 1987 issue of Gazette International (page 605). It is a twin-axle bogie provided with a locking mechanism for joining the bogie and a semi-trailer together. At the rail transfer site, the semi-trailer is moved on the track and its body lifted by its own pneumatic suspension to allow the rail bogie to be rolled beneath the trailer body which is then lowered into position on the rail bogie, the trailer wheels being thereafter lifted further to clear the track safely. The back of the semi-trailer is also provided with a special coupler so that a train of semi-trailers can be formed by having the back end of one trailer fitted to the rail bogie, in the manner aforesaid, and the front end of the next trailer hooked to the coupler at the back 13~888 end of the preceding trailer. The coupling is efficient but the hooking procedure is time consuming and complex.
Another type of "RoadRailer" is described in the September 1987 issue of the magazine Traffic Management. In this case, the rail bogie is secured to the body of the trailer, between each pair of tire wheels. Once the trailer is moved on the railway track, the bogie is lowered to raise the trailer wheels sufficiently to clear the track safely.
Several trailers may be end connected together to form a train. In this case, all trailers are equipped permanently with rail bogies which is an expensive method of road-rail transportation.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a twin-axle rail bogie that can join semi-trailers together end-to-end in an easy and simple procedure, particularly using its own lifting power rather than using that of one of the semi-trailer to be connected. Also, the rail bogie of the invention is a unit independent of the semi-trailer, which renders road-rail transportation less expensive.
More specifically, the rail bogie of the invention comprises a bogie truck having a frame on which railroad wheels are mounted, a platform and a lift assembly between the platform and the bogie truck. The platform and the lift assembly are operatively inter-connected so that the assembly may raise or lower the platform. A suspension may be used to support the lift assembly from the bogie truck.
The platform carries a first fifth wheel preferably between the bogie wheels, in order to receive a coupling king pin provided at the front end of a semi-trailer or a simular road vehicle. The platform also carries a second fifth wheel, preferably mounted on an inclined foot in integrally provided at the lower end of a vertical leg integral with an depending from one end of the platform. This second fifth wheel is intended to be coupled with another connection pin provided at the back end of another semi-trailer or the like road vehicle.
In a preferred form, the rail bogie has a vertical leg which is integral with and depends from the aforesaid one end of the platform; the inclined foot being integrally provided at the lower end of this leg.
Another object of the invention is to provide a combination of a rail bogie as broadly described above and a road vehicle comprising; a vehicle body, a hooking block secured to the rear end of the body, and a coupling king pin fixed to the block and lockingly engaged with the second fifth wheel.
Other features and advantages of the invention will become apparent from the description that follows of a preferred embodiment, having reference to the appended drawings.
IN THE DRAWINGS
Figure 1 is a diagrammatic side elevation view, partly in cross-section, of a twin-axle rail bogie made according to the invention;
Figure 2 is a diagrammatic plan view of the wheel bogie but including the worm drive;
Figure 3 is a rear view of the rail bogie from the right end of Figures 1 and 2;
133288~
Figure 4 is a diagrammatic side partial side elevation view of the semi-trailer shown coupled to the rear end of a road vehicle;
Figure 5 is a diagrammatic side elevation view of a train of semi-trailers joined by rail bogies, made according to the invention, and Figure 6 is a diagrammatic side elevation view of a train drive unit or engine, where the train includes a road trailer.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring particuIarly to Figs. 1 to 3, the twin-rail bogie 1 shown comprises a rail bogie truck 2 including an H frame 3 having a central transverse web 5 and two lateral flanges 7 carrying two pairs of wheels 9, through axles 10 and bearings 11. A lift assembly 13 is provided above the truck 2, being supported by a standard pneumatic suspension 15 including two com-pressed air balloons 17 on the web 5. The lift assembly 13 supports, in turn, a platform 19.
Means known per se may be provided for keeping the frame 3 of the rail bogie truck 2 in permanent alignment with the platform 19. Such means may consist of free jacks 20 whose ends are respectively connected to the frame 3 and platform 19 about horizontal pivots 20a.
The lift assembly 13 has a top plate 21, located beneath the platform 19, formed with four corner apertures 23. Beneath the top plate 21 are four drive gears, more particularly worm wheels 25, each having a central hub 27 formed with a threaded bore;
hubs 27 being rotatably mounted in the apertures 23 of the top plate 21 through suitable bearings (not shown).
The worm wheels 25 and their hubs 27 ~re rotated by means of worms 29 journaled in bearings 31 fixed to and beneath the top plate 21. The worms are, in turn, rotated by a hydraulic motor 33, through a conventional differential 35. Finally, means in the form of four threaded bolts 37, having one end made fast with the platform 19 and the other end threaded in the hubs 27, provide the required driving connection to ensure raising and lowering of the platform 19 when the worm wheels 25 are rotated.
The worm wheels 25, the worms 29, the motors 33 and the differentials 35 are supported by suitable brackets 39 appropriately removably fixed to the top plate 21; the worm wheels 25 being carried on the brackets 39 by means of thrust bearings (not shown).
A first conventional fifth wheel 41 is mounted on the platform 19 centrally between the two pairs of wheels 9. As is known, the fifth wheel 41 has a generally U-shaped heavy cast steel bed-plate 43 (Fig. 3) of which the side branches 45 form sloping ramps and define therebetween a V opening leading into a central king pin aperture 47, closable by a king pin lock in the form of a ring 49. The aperture 47 receives a king pin for coupling purpose, as will be seen hereinafter. The bed-plate 43 is pivoted on a rocker pin 51 extending crosswise of the platform 19, providing a swinging movement between the semi-trailer and the platform 19. The outer ends of the rocker pin 51 are supported in pillow blocks 64 bolted to the platform 19.
There is provided, at the front end of the rail bogie, a foot 55 that is upwardly inclined at an angle of about 15 to 20 and is preferably made solid with the lower end of a vertical leg 57, itself solid with the platform l9, as by being cast together. A
second fifth wheel 59, of the same construction as the ~332888 first fifth wheel 51, is provided on this foot 55. Both fifth wheels 41, 59 cooperate with king pin means, one such means 61 being shown diagrammatically in Figure 4.
As is known, such means 61 is essentially a flat heavy steel plate 61 having a king pin (not shown) at its center for locking into the locking aperture of the lower fifth wheel 59. Plate 61, in this case, is fixed to the lower face of a hooking block 62, which lower face is inclined at the same angle as the foot 55. Block 62 replaces the rear bumper of a trailer body 64. The upward inclination of the foot 55 allows an appreciable portion of the puIl force necessary to move the semi-trailer to be borne by the leg 57 rather than being borne by the king pin. The front edge 63 of the plate 61 is turned up approximately 45 to form a skid sliding on the bed plate of the lower fifth wheel 59 during engagement of the trailer body 64 with the rail bogie 1. The aforesaid king pin, extending down from the upper fifth wheel plate 61, is then housed and locked in the fifth wheel bed-plate aperture. The same description applies with respect to the first fifth wheel 41 on the platform 19 except that here the cor-responding king pin is the standard pin mounted directly at the front end of a semi-trailer body.
Figure 5 illustrates a train formed of a combination of three semi-trailers 65, 69, 71, a road tractor 73 and a diesel engine semi-trailer 67 operable from the road tractor 73 and of which a description is given hereinbelow. In this example of use of a rail bogie made according to the invention, two such bogies A and B are moved toward the tractor 73 with their inclined feet 55 coming under the tractor front and rear blocks 62. The semi-trailer 65 is then moved toward the bogie B and thereafter the lift assemblies 13 are actuated to raise both the tractor 73 and the front end of the semi-trailer 65 for interengagement and locking of the relevant fifth wheels and king pin and for lifting the tractor wheels 74 completely off the railroad track. At that time, the landing gear 75 of the semi-trailer 65 is retracted, as shown. Connection of the rail bogie C to the rear end of the semi-trailer 65 and the front end of the engine semi-trailer 67 is obtained in the same manner.
The next bogie D is of special construction, more like the one described in the Traffic Management magazine mentioned above. It has its front end permanently secured to the rear end of the engine semi-trailer 67 while its rear end has a fifth wheel interlocked with a king pin at the front end of the semi-trailer 67. It is provided with a pair of rail-road driving wheels 77 and a pair of road wheels 79 with pneumatic tires. Once the two semi-trailers 67, 69, are connected, through the fifth wheel, the road wheels 79 are lifted up from the railroad track. Finally, hooking of the rear end of the semi-trailer 69 and the front end of the semi-trailer 71 is obtained through the rail bogie E in the same manner as described above with respect to the rail bogies A, B and C.
Fig. 6 is a diagram of the special semi-trailer 67 for driving the train, being controlled from the tractor 73 as said before. It comprises a diesel engine 79, with a fuel tank 80, operating an electric generator 81 and a pneumatic pump 82 pressurizing air in an air tank 83, theair serving for actuating the brakes 85 of all of the wheels 9 and 77. The latter are actuated by electric motors fed from the generator 81.
Claims (9)
1. A twin-axle rail bogie for hooking with semi-trailers and the like road vehicles, said bogie comprising:
- a rail bogie truck including a frame and railroad wheels mounted on said frame for allowing said bogie truck to ride on railroad tracks:
- a lift assembly mounted above said frame:
- a platform mounted onto said lift assembly:
- means for allowing said lift assembly to raise and lower said platform; and - first and second, oppositely oriented fifth wheels mounted on said platform.
- a rail bogie truck including a frame and railroad wheels mounted on said frame for allowing said bogie truck to ride on railroad tracks:
- a lift assembly mounted above said frame:
- a platform mounted onto said lift assembly:
- means for allowing said lift assembly to raise and lower said platform; and - first and second, oppositely oriented fifth wheels mounted on said platform.
2. A rail bogie as claimed in claim 1, further comprising suspension means connected to and between said frame and lift assembly.
3. A rail bogie as claimed in claim 2, wherein the first fifth wheel is mounted centrally onto said platform and wherein the second fifth wheel is mounted on an upwardly inclined foot at one end of said platform, said inclined foot being integrally provided at the lower end of a vertical leg integral with and depending from said one end of said platform.
4. A rail bogie as claimed in claim 1, wherein said lift assembly comprises:
- a top plate, beneath said platform, said top plate being formed with apertures therethrough;
- drive gears, beneath said top plate, each gear having a central hub formed with a threaded bore: said hubs rotatably fitting in said apertures; and - threaded bolts having one end secured to said platform and the other end threaded into said threaded bores and said hubs; and wherein said means for raising and lowering the platform comprises drive means, beneath said plate, for rotating said gears and hubs, whereby rotation of said hubs by said drive means causes displacement of said platform with respect to said top plate.
- a top plate, beneath said platform, said top plate being formed with apertures therethrough;
- drive gears, beneath said top plate, each gear having a central hub formed with a threaded bore: said hubs rotatably fitting in said apertures; and - threaded bolts having one end secured to said platform and the other end threaded into said threaded bores and said hubs; and wherein said means for raising and lowering the platform comprises drive means, beneath said plate, for rotating said gears and hubs, whereby rotation of said hubs by said drive means causes displacement of said platform with respect to said top plate.
5. A rail bogie as claimed in claim 4, wherein said drive gears are worm wheels and said drive means comprises worms meshing with said worm wheels and motor means for rotating said worms.
6. A rail bogie as claimed in claim 4, comprising support means mounting said drive gears and drive means beneath said top plate.
7. In combination, a rail bogie as claimed in claim 1 and a road vehicle comprising:
- a vehicle body;
- a hooking block secured to the rear end of said body;
and - a coupling king pin fixed to said block lower face and lockingly engaged with said second fifth wheel.
- a vehicle body;
- a hooking block secured to the rear end of said body;
and - a coupling king pin fixed to said block lower face and lockingly engaged with said second fifth wheel.
8. In combination, a rail bogie as claimed in claim 3, 4, 5 or 6 and a road vehicle comprising:
- a vehicle body;
- a hooking block secured to the rear end of said body, said block having a lower face inclined at the same angle as said upwardly inclined foot of said rail bogie platform, and - a coupling king pin fixed to said block lower face and lockingly engaged with said second fifth wheel.
- a vehicle body;
- a hooking block secured to the rear end of said body, said block having a lower face inclined at the same angle as said upwardly inclined foot of said rail bogie platform, and - a coupling king pin fixed to said block lower face and lockingly engaged with said second fifth wheel.
9. A combination as claimed in claim 7, wherein the vehicle body has a front end provided with another coupling king pin and wherein said combination further comprises a motorized semi-trailer coupling a rear bogie provided with a pair of railroad driving wheels and a pair of retractable road wheels, said rear bogie having an upper surface that projects rearwardly from the semi-trailer and is provided with a fifth wheel sized and positioned to receive and interlock said other coupling king pin of said vehicle body whereby said vehicle body is operatively connected to said motorized semi-trailer and driven by the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 616449 CA1332888C (en) | 1988-03-15 | 1992-08-03 | Rail bogies |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000561449A CA1318551C (en) | 1988-03-15 | 1988-03-15 | Motorized unit for driving a train on rails |
| CA561,449 | 1988-03-15 | ||
| CA 616449 CA1332888C (en) | 1988-03-15 | 1992-08-03 | Rail bogies |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000561449A Division CA1318551C (en) | 1988-03-15 | 1988-03-15 | Motorized unit for driving a train on rails |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1332888C true CA1332888C (en) | 1994-11-08 |
Family
ID=25671773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 616449 Expired - Fee Related CA1332888C (en) | 1988-03-15 | 1992-08-03 | Rail bogies |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1332888C (en) |
-
1992
- 1992-08-03 CA CA 616449 patent/CA1332888C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |