CA1150209A - Rail vehicle system and guard rail - Google Patents
Rail vehicle system and guard railInfo
- Publication number
- CA1150209A CA1150209A CA000363981A CA363981A CA1150209A CA 1150209 A CA1150209 A CA 1150209A CA 000363981 A CA000363981 A CA 000363981A CA 363981 A CA363981 A CA 363981A CA 1150209 A CA1150209 A CA 1150209A
- Authority
- CA
- Canada
- Prior art keywords
- rail vehicle
- vehicle system
- rail
- wheels
- frame
- 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
Links
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- Platform Screen Doors And Railroad Systems (AREA)
Abstract
RAIL VEHICLE SYSTEM
ABSTRACT OF THE DISCLOSURE
A rail vehicle system comprises a pair of spaced apart railway rails 6, heads 7 of the rails 6 being engaged by a leading pair and a trailing pair of flanged wheels 3 Or a rail vehicle 1, which flanged wheels 3 have an axis of rotation 9 extending laterally with respect to the direction of travel of the vehicle 1 along the railway rails 6, a beam 29 located adjacent each rail 6, and at least a portion 31 of the beam 29 being located firstly in a plane which passes through the axes of rotation 9 of the flanged wheels 3 and secondly in such close proximity to the wheels 3 that centres of the latter engage the beam portion 31 at a curve in the railway rails 6 for the purpose of vehicle guidance around the curve.
ABSTRACT OF THE DISCLOSURE
A rail vehicle system comprises a pair of spaced apart railway rails 6, heads 7 of the rails 6 being engaged by a leading pair and a trailing pair of flanged wheels 3 Or a rail vehicle 1, which flanged wheels 3 have an axis of rotation 9 extending laterally with respect to the direction of travel of the vehicle 1 along the railway rails 6, a beam 29 located adjacent each rail 6, and at least a portion 31 of the beam 29 being located firstly in a plane which passes through the axes of rotation 9 of the flanged wheels 3 and secondly in such close proximity to the wheels 3 that centres of the latter engage the beam portion 31 at a curve in the railway rails 6 for the purpose of vehicle guidance around the curve.
Description
This invention relates to a rail vehicle system.
According to the present invention there is provided a rail vehicle system comprising a pair of spaced apart railway rails, heads of the rails being engaged by a leading pair and a trailing pair of flanged wheels of a rail vehicle, which flanged wheels have an axis of rotation extendiny laterally with respect to the direction of travel of the vehicle along the railway rails, a beam located adjacent each rail, and at least a portion of the beam being located firstly in a plane which passes through the axes of rotation of the flanged wheels and secondly in such close proximity to the wheels that centres of the latter engage the beam portion at a curve in the railway rails for the purpose of vehicle guidance around the curve.
Thus, in the system according to the present invention, vehicle guidance does not rely solely on the reaction forces conventionally transmitted at a curve through the wheel flanges but in contrast, guidance is principally effected by wheel centre to beam contact at curves in the rails.
The rail vehicle may take the form of a bogie or a bogie mounted rail car. Basically, the bogie may comprise a frame and the four flanged wheels. Furthermore, power means may be pro-vided to adjust the position of the axes of rotation of the flanged wheels with respect to the frame.
The rail vehicle may be provided with a trapping wheel located at each side thereof intermediate the leading and trail-ing wheels. At least a portion of each trapping wheel is located outboard of the bogie to engage a trapping bar provided at one, ~, o~
or preferably both, sides of the conven-tional rails e.g. at bends or depressions of a mine floor for instance, to ensure main-tenance of contact of the rail wheels with the rails. It is also preferred for each flanged wheel to be carried on an arm pivotally attached at one point to the frame about a suspension axis, and pivotally attached at another point to the power means as described in greater detail in our British Patent No.
1,58~,951 (I~owarth). Furthermore, the vehicle may be provided with at least one brake pad carried by -the frame and adapted to engage/disengage a rail upon activation of the powèr mèans to cause lowering/raising the frame to bring the one or more pads into engagement/disengagement with the or each rail. Preferably, a common power means extends between the arms of each pair of leading and trailing wheels and conveniently one power means is located at each side of the vehicle. Preferably, such power means extends generally horizontally and conveniently is a piston and cylinder unit, preferably hydraulically actuated, with the rod of the piston pivotally attached to one arm and cylinder of the unit pivotally attached to the other arm, the position of the piston within the cylinder determining the degree of rotation of the arms about their suspension axes and hence the suspended position of the frame with respect to the railway rails. Thus extension of the piston and cylinder unit can be arranged to rotate the arms about the suspension axes so as to raise the frame with respect to the rails with retraction of the piston and cylinder lowering the frame.
In addition to providing a parking and/or emergency brake, 5~2(~9 the vehicle may also incorporate service brakes.
Also, in the above described rail vehicle system, the vehicle has been displaceable by a locomotive. However, ano-ther preferred feature is to make the vehicle a drive vehicle by incorporating drive means within the vehicle -to propel the latter along the rails. The drive means may take the form of a conventional rotary electric motor or a hydraulic motor connected to some or all the rail wheels of the vehicle, or a linear motor.
One or both the bogies of a rail car may be drive bogies.
Power for the motor may be by providing the rail vehicle, or one rail vehicle of a train, with a diesel electric generating set, the latter driving electric motors, hydraulic pumps etc., as required.
The invention will now be further described by way of examples, with reference to the accompanying drawing which is a detailed sectional view through a rail vehicle system in accordance with the present invention.
In the drawing, a bogie l, comprises a frame 2 and, at each side of the bogie, leading and trailing wheels 3, each wheel having a flange 4 and a frusto-conical rail engaging periphery 5. A pair of flat bottom rails 6 lone only shows) with a head 7 are mounted on sleepers 8 to provide a conventional rail track. Each wheel 3 has an axis of rotation 9 extending laterally with respect to the direction of travel of the bogie along the rails 6, and each is mounted on a support arm pivotally attached about a suspension axis to the frame 2, as described in greater detail in our British Patent No. 1,584,951 (Howarth).
The support arms at each side of the bogie are pivotally connected about axes to a common power means constituted by a hydraulic piston and cylinder unit 13, operation of which displaces the support arms about their suspension axes and hence displaces the wheel rotation axes 9 with respect to the bogie 1. At each side of the frame 2 and between -the leading and trailing wheels 3, is carried a brake pad 21 with a lining 22 of friction material, the lining 22 being engageable with the rail head 7 to act as a track brake Eor parking or emergency purposes, upon exhaustion of fluid from the track brake and suspension hydraulic unit 13.
From the frame 2 of the bogie 1 is suspended on four arms 25, a motor unit 26 of a linear motor, a reaction plate 27 being located between the rails 6 on the sleepers 8. Power for the windings of the motor unit 26 is provided for instance, by a diesel-electric generating set carried by a rail vehicle (not shown) mounted on bogies 1, or one of the vehicles of a train. Intermediate the leading and trailing wheels 3 at each side of the bogie is a trapping wheel 28 rotatable about an upright axis. One bogie 1 would be located towards each end of a rail car in conventional manner, and the rail vehicle system according to the invention is completed by the provision of elements 29-32.
The periphery of each trapping wheel 28 is located outboard of the bogie 1 and engages a channel section trapping bar 29 supported from an arm 30 carried by sleepers 8A interposed between sleepers 8. Trapping bar 29 has an upper flange 31 located along the axis of rotation 9 of the wheels 3 and adapted to engage wheel caps 32 e.g. at curves in the rail 6, to assist in guiding the bogie 1 around the curve. This system enables tighter curves to be safely negotiated, e.g. as are often encountered in mine rail systems than would be possible if one were to rely solely on bogie guidance in the conventional manner by the flanges 4.
According to the present invention there is provided a rail vehicle system comprising a pair of spaced apart railway rails, heads of the rails being engaged by a leading pair and a trailing pair of flanged wheels of a rail vehicle, which flanged wheels have an axis of rotation extendiny laterally with respect to the direction of travel of the vehicle along the railway rails, a beam located adjacent each rail, and at least a portion of the beam being located firstly in a plane which passes through the axes of rotation of the flanged wheels and secondly in such close proximity to the wheels that centres of the latter engage the beam portion at a curve in the railway rails for the purpose of vehicle guidance around the curve.
Thus, in the system according to the present invention, vehicle guidance does not rely solely on the reaction forces conventionally transmitted at a curve through the wheel flanges but in contrast, guidance is principally effected by wheel centre to beam contact at curves in the rails.
The rail vehicle may take the form of a bogie or a bogie mounted rail car. Basically, the bogie may comprise a frame and the four flanged wheels. Furthermore, power means may be pro-vided to adjust the position of the axes of rotation of the flanged wheels with respect to the frame.
The rail vehicle may be provided with a trapping wheel located at each side thereof intermediate the leading and trail-ing wheels. At least a portion of each trapping wheel is located outboard of the bogie to engage a trapping bar provided at one, ~, o~
or preferably both, sides of the conven-tional rails e.g. at bends or depressions of a mine floor for instance, to ensure main-tenance of contact of the rail wheels with the rails. It is also preferred for each flanged wheel to be carried on an arm pivotally attached at one point to the frame about a suspension axis, and pivotally attached at another point to the power means as described in greater detail in our British Patent No.
1,58~,951 (I~owarth). Furthermore, the vehicle may be provided with at least one brake pad carried by -the frame and adapted to engage/disengage a rail upon activation of the powèr mèans to cause lowering/raising the frame to bring the one or more pads into engagement/disengagement with the or each rail. Preferably, a common power means extends between the arms of each pair of leading and trailing wheels and conveniently one power means is located at each side of the vehicle. Preferably, such power means extends generally horizontally and conveniently is a piston and cylinder unit, preferably hydraulically actuated, with the rod of the piston pivotally attached to one arm and cylinder of the unit pivotally attached to the other arm, the position of the piston within the cylinder determining the degree of rotation of the arms about their suspension axes and hence the suspended position of the frame with respect to the railway rails. Thus extension of the piston and cylinder unit can be arranged to rotate the arms about the suspension axes so as to raise the frame with respect to the rails with retraction of the piston and cylinder lowering the frame.
In addition to providing a parking and/or emergency brake, 5~2(~9 the vehicle may also incorporate service brakes.
Also, in the above described rail vehicle system, the vehicle has been displaceable by a locomotive. However, ano-ther preferred feature is to make the vehicle a drive vehicle by incorporating drive means within the vehicle -to propel the latter along the rails. The drive means may take the form of a conventional rotary electric motor or a hydraulic motor connected to some or all the rail wheels of the vehicle, or a linear motor.
One or both the bogies of a rail car may be drive bogies.
Power for the motor may be by providing the rail vehicle, or one rail vehicle of a train, with a diesel electric generating set, the latter driving electric motors, hydraulic pumps etc., as required.
The invention will now be further described by way of examples, with reference to the accompanying drawing which is a detailed sectional view through a rail vehicle system in accordance with the present invention.
In the drawing, a bogie l, comprises a frame 2 and, at each side of the bogie, leading and trailing wheels 3, each wheel having a flange 4 and a frusto-conical rail engaging periphery 5. A pair of flat bottom rails 6 lone only shows) with a head 7 are mounted on sleepers 8 to provide a conventional rail track. Each wheel 3 has an axis of rotation 9 extending laterally with respect to the direction of travel of the bogie along the rails 6, and each is mounted on a support arm pivotally attached about a suspension axis to the frame 2, as described in greater detail in our British Patent No. 1,584,951 (Howarth).
The support arms at each side of the bogie are pivotally connected about axes to a common power means constituted by a hydraulic piston and cylinder unit 13, operation of which displaces the support arms about their suspension axes and hence displaces the wheel rotation axes 9 with respect to the bogie 1. At each side of the frame 2 and between -the leading and trailing wheels 3, is carried a brake pad 21 with a lining 22 of friction material, the lining 22 being engageable with the rail head 7 to act as a track brake Eor parking or emergency purposes, upon exhaustion of fluid from the track brake and suspension hydraulic unit 13.
From the frame 2 of the bogie 1 is suspended on four arms 25, a motor unit 26 of a linear motor, a reaction plate 27 being located between the rails 6 on the sleepers 8. Power for the windings of the motor unit 26 is provided for instance, by a diesel-electric generating set carried by a rail vehicle (not shown) mounted on bogies 1, or one of the vehicles of a train. Intermediate the leading and trailing wheels 3 at each side of the bogie is a trapping wheel 28 rotatable about an upright axis. One bogie 1 would be located towards each end of a rail car in conventional manner, and the rail vehicle system according to the invention is completed by the provision of elements 29-32.
The periphery of each trapping wheel 28 is located outboard of the bogie 1 and engages a channel section trapping bar 29 supported from an arm 30 carried by sleepers 8A interposed between sleepers 8. Trapping bar 29 has an upper flange 31 located along the axis of rotation 9 of the wheels 3 and adapted to engage wheel caps 32 e.g. at curves in the rail 6, to assist in guiding the bogie 1 around the curve. This system enables tighter curves to be safely negotiated, e.g. as are often encountered in mine rail systems than would be possible if one were to rely solely on bogie guidance in the conventional manner by the flanges 4.
Claims (21)
1. A rail vehicle system comprising a pair of spaced apart railway rails having rail heads, a leading pair and a trailing pair of flanged wheels of a rail vehicle engaging said rail heads and each pair having an axis of rotation extending laterally with respect to the direction of travel of said vehicle along said railway rails, a beam located adjacent each of said rails, and at least a portion of said beam being located firstly in a plane which passes through said axes of rotation of said flanged wheels and secondly in such close proximity to said flanged wheels that centres of said flanged wheels engage said beam portion at a curve in said railway rails for the purpose of guidance of said vehicle around said curve.
2. A rail vehicle system as claimed in Claim 1, wherein said rail vehicle is a bogie.
3. A rail vehicle system as claimed in Claim 1, wherein said rail vehicle is a bogie mounted rail car.
4. A rail vehicle system as claimed in Claim 2, wherein said bogie comprises a frame and four flanged wheels.
5. A rail vehicle system as claimed in Claim 4, including means pivotally mounting said flanged wheels relative to said frame, and power means operatively associated with said frame and flanged wheels to adjust the position of said axes of rotation of said flanged wheels with respect to said frame.
6. A rail vehicle system as claimed in Claim 1, wherein said rail vehicle is provided with a trapping wheel rotatable about an upright axis located at each side thereof intermediate said leading and trailing wheels and a trapping bar is provided at one or both sides of said railway rails, each of said trapping wheels engaging an adjacent one of said trapping bars.
7. A rail vehicle system as claimed in Claim 4, wherein at least a portion of each of said trapping wheels is located outboard of said bogie.
8. A rail vehicle system as claimed in Claim 5, wherein said mounting means includes four arms pivotally attached at one point to said frame about a suspension axis and pivotally attached at another point to said power means, each arm carrying one of said flanged wheels.
9. A rail vehicle system as claimed in Claim 5, wherein said vehicle is provided with at least one brake pad carried by said frame and adapted to engage/disengage one of said railway rails upon activation of said power means to cause lowering/raising said frame to bring said at least one pad into engagement/disengagement with said rail.
10. A rail vehicle system as claimed in Claim 8, wherein a common power means extends between said arms of each pair of leading and trailing wheels at each side of said vehicle.
11. A rail vehicle system as claimed in Claim 10, wherein one said power means is located at each side of said vehicle.
12. A rail vehicle system as claimed in Claim 11, wherein said power means extends generally horizontally.
13. A rail vehicle system as claimed in Claim 11, wherein said power means is hydraulically actuated.
14. A rail vehicle system as claimed in Claim 8, wherein said power means comprises a piston and cylinder unit, a rod of a piston of said piston and cylinder unit being pivotally attached to one of said arms and a cylinder of said piston and cylinder unit being pivotally attached to the other of said arms, at each side of said vehicle.
15. A rail vehicle system as claimed in Claim 1, wherein said vehicle incorporates service brakes.
16. A rail vehicle system as claimed in Claim 1, wherein said vehicle incorporates drive means to propel said vehicle.
17. A rail vehicle system as claimed in Claim 16, wherein said drive means comprises a conventional rotary electric motor.
18. A rail vehicle system as claimed in Claim 16, wherein said drive means comprises a hydraulic motor.
19. A rail vehicle system as claimed in Claim 16, wherein said drive means takes the form of a linear motor.
20. A rail vehicle system as claimed in Claim 3, wherein said rail car comprises two bogies, at least one of which is a drive bogie.
21. A rail vehicle system as claimed in Claim 16, wherein said vehicle is provided with a diesel electric generating set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000363981A CA1150209A (en) | 1980-11-05 | 1980-11-05 | Rail vehicle system and guard rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000363981A CA1150209A (en) | 1980-11-05 | 1980-11-05 | Rail vehicle system and guard rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1150209A true CA1150209A (en) | 1983-07-19 |
Family
ID=4118339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000363981A Expired CA1150209A (en) | 1980-11-05 | 1980-11-05 | Rail vehicle system and guard rail |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1150209A (en) |
-
1980
- 1980-11-05 CA CA000363981A patent/CA1150209A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |