CA2930108A1 - Monorail guide wheel with integral retention device - Google Patents
Monorail guide wheel with integral retention device Download PDFInfo
- Publication number
- CA2930108A1 CA2930108A1 CA2930108A CA2930108A CA2930108A1 CA 2930108 A1 CA2930108 A1 CA 2930108A1 CA 2930108 A CA2930108 A CA 2930108A CA 2930108 A CA2930108 A CA 2930108A CA 2930108 A1 CA2930108 A1 CA 2930108A1
- Authority
- CA
- Canada
- Prior art keywords
- bogie
- hub
- guide wheel
- shaft
- guide
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/04—Monorail systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
- Rolling Contact Bearings (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Handcart (AREA)
Abstract
A bogie for a monorail adapted to travel on a guide beam comprises a bogie frame, a load wheel and two guide wheel assemblies. The load wheel is connected to the bogie frame and is adapted to run on the guide beam. Each one of the two guide wheel assemblies is connected to the bogie frame on a different side of the bogie frame so that the bogie straddles the guide beam. Each one of the guide wheel assemblies has a hub adapted to spin over a shaft, a guide wheel and a retaining device. The hub is equipped with a hub protrusion extending radially outwardly. The guide wheel is attached to the hub and is operative to contact a side of the guide beam. The retaining device is connected to the hub and has a retaining flange extending radially inwardly below the hub protrusion so as to capture the hub protrusion in case of failure of the guide wheel assembly.
Description
MONORAIL GUIDE WHEEL WITH INTEGRAL RETENTION DEVICE
FIELD OF THE INVENTION
The present invention generally relates to the field of mass transit vehicles.
More specifically, the invention relates to a monorail bogie having guide wheel assemblies equipped with an integral retention device preventing a guide wheel to fall off to the ground in case of failure.
BACKGROUND OF THE INVENTION
Contrarily to rail vehicles equipped with self-steering steel wheels, monorails vehicles, running on a concrete guide beam, are typically equipped with load tires which are incapable of self-guidance. Hence, the monorail bogies are equipped with guide wheels on each side of the guide beam which follow the guide beam and which serve to align the load wheel with the guide beam.
Considerable load is placed on the guide wheels as the monorail takes a curve at speed. Because the guide beam on which the monorail runs is typically elevated, failure of the guide wheel under load could be catastrophic as the guide wheel could potentially fall to the ground.
There is therefore a need for a device preventing the guide wheels from falling off to the ground in case of failure.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a monorail guide wheel arrangement that overcomes or mitigates one or more disadvantages of known monorail guide wheel arrangements, or at least provides a useful alternative.
The invention provides the advantages of preventing a guide wheel from falling to the ground in case of failure.
In accordance with an embodiment of the present invention, there is provided a bogie for a monorail adapted to travel on a guide beam. The bogie comprises a bogie frame, a load wheel and two guide wheel assemblies. The load wheel is connected to the bogie frame and is adapted to run on the guide beam.
Each one of the two guide wheel assemblies is connected to the bogie frame on a ,
FIELD OF THE INVENTION
The present invention generally relates to the field of mass transit vehicles.
More specifically, the invention relates to a monorail bogie having guide wheel assemblies equipped with an integral retention device preventing a guide wheel to fall off to the ground in case of failure.
BACKGROUND OF THE INVENTION
Contrarily to rail vehicles equipped with self-steering steel wheels, monorails vehicles, running on a concrete guide beam, are typically equipped with load tires which are incapable of self-guidance. Hence, the monorail bogies are equipped with guide wheels on each side of the guide beam which follow the guide beam and which serve to align the load wheel with the guide beam.
Considerable load is placed on the guide wheels as the monorail takes a curve at speed. Because the guide beam on which the monorail runs is typically elevated, failure of the guide wheel under load could be catastrophic as the guide wheel could potentially fall to the ground.
There is therefore a need for a device preventing the guide wheels from falling off to the ground in case of failure.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a monorail guide wheel arrangement that overcomes or mitigates one or more disadvantages of known monorail guide wheel arrangements, or at least provides a useful alternative.
The invention provides the advantages of preventing a guide wheel from falling to the ground in case of failure.
In accordance with an embodiment of the present invention, there is provided a bogie for a monorail adapted to travel on a guide beam. The bogie comprises a bogie frame, a load wheel and two guide wheel assemblies. The load wheel is connected to the bogie frame and is adapted to run on the guide beam.
Each one of the two guide wheel assemblies is connected to the bogie frame on a ,
2 different side of the bogie frame so that the bogie straddles the guide beam.
Each one of the guide wheel assemblies has a vertically aligned shaft, a bearing assembly, a hub, a guide wheel and a retaining device. The shaft is inserted in the bearing assembly. The bearing assembly is inserted in the hub so that the hub may spin around the shaft. The hub is equipped with a hub protrusion extending radially outwardly. The guide wheel is attached to the hub and is operative to contact a side of the guide beam. The retaining device is connected to the shaft.
The retaining device has a retaining flange extending radially inwardly below the hub protrusion so as to capture the hub protrusion in case of failure of the guide wheel assembly.
Optionally, the hub protrusion may take the shape of a hub flange and the retaining device may be removable and may take the shape of a ring.
Preferably, the hub flange and the retaining ring may be placed distal a lower extremity of the shaft. The guide wheel may be placed below the hub protrusion or flange when the bogie is in a working position to facilitate disassembly of the guide wheel. The bearing may be a sealed bearing cartridge and the guide wheel may comprise a rim and an inflatable tire.
The retaining ring may be split along a median vertical plane so as to be made of two complementary halves, forming a removable retaining ring which facilitates its assembly over the hub and shaft.
Optionally, the bogie may further comprise a sensor placed in proximity to the hub protrusion. The sensor is operative to detect an axial movement of the hub protrusion with respect to either the shaft or the retaining device, which would be indicative of a failure. This sensor may be of a type consisting of one of proximity, infrared, capacitive and photo-electric sensor.
Each one of the guide wheel assemblies has a vertically aligned shaft, a bearing assembly, a hub, a guide wheel and a retaining device. The shaft is inserted in the bearing assembly. The bearing assembly is inserted in the hub so that the hub may spin around the shaft. The hub is equipped with a hub protrusion extending radially outwardly. The guide wheel is attached to the hub and is operative to contact a side of the guide beam. The retaining device is connected to the shaft.
The retaining device has a retaining flange extending radially inwardly below the hub protrusion so as to capture the hub protrusion in case of failure of the guide wheel assembly.
Optionally, the hub protrusion may take the shape of a hub flange and the retaining device may be removable and may take the shape of a ring.
Preferably, the hub flange and the retaining ring may be placed distal a lower extremity of the shaft. The guide wheel may be placed below the hub protrusion or flange when the bogie is in a working position to facilitate disassembly of the guide wheel. The bearing may be a sealed bearing cartridge and the guide wheel may comprise a rim and an inflatable tire.
The retaining ring may be split along a median vertical plane so as to be made of two complementary halves, forming a removable retaining ring which facilitates its assembly over the hub and shaft.
Optionally, the bogie may further comprise a sensor placed in proximity to the hub protrusion. The sensor is operative to detect an axial movement of the hub protrusion with respect to either the shaft or the retaining device, which would be indicative of a failure. This sensor may be of a type consisting of one of proximity, infrared, capacitive and photo-electric sensor.
3 BRIEF DESCRIPTION OF DRAWINGS
These and other features of the present invention will become more apparent from the following description in which reference is made to the appended drawings wherein:
Figure 1 is an isometric view of a monorail bogie in accordance with an embodiment the present invention;
Figure 2 shows a cross-sectional isometric view of a guide wheel assembly of the monorail bogie of Figure 1.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a bogie for a monorail adapted to travel on a guide beam. The bogie is equipped with a retaining device to prevent a guide wheel from falling off in case of failure.
Figure 1 shows a bogie 10. The bogie 10 comprises a bogie frame 12, a load wheel 14 and four guide wheel assemblies 16. The load wheel 14 is supports the bogie frame 12, which itself supports the monorail (not shown). The load wheel 14 is equipped with a tire 20 adapted to run on a guide beam 22.
The guide wheel assemblies 16 are connected in pairs to the bogie frame 12, one on each of its sides, so as to straddle the guide beam. Figure 1 shows a bogie 10 with four guide wheel assemblies 16. This is a particular case by way of example only as there could be a minimum of two guide wheels assemblies 16 guiding the bogie 10.
Figure 2, now concurrently referred to, shows a cross-section of one guide wheel assembly 16. The guide wheel assembly 16 comprises a vertically aligned shaft 24, a bearing assembly 26, a hub 28, a guide wheel 30 and a retaining device 32.
The shaft 24 is connected to the bogie frame 12 by its upper portion 18 so as to point downwardly. The bearing assembly 26, which is inserted over the shaft 24, may either be made of two separated bearings or one sealed bearing cartridge.
These and other features of the present invention will become more apparent from the following description in which reference is made to the appended drawings wherein:
Figure 1 is an isometric view of a monorail bogie in accordance with an embodiment the present invention;
Figure 2 shows a cross-sectional isometric view of a guide wheel assembly of the monorail bogie of Figure 1.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a bogie for a monorail adapted to travel on a guide beam. The bogie is equipped with a retaining device to prevent a guide wheel from falling off in case of failure.
Figure 1 shows a bogie 10. The bogie 10 comprises a bogie frame 12, a load wheel 14 and four guide wheel assemblies 16. The load wheel 14 is supports the bogie frame 12, which itself supports the monorail (not shown). The load wheel 14 is equipped with a tire 20 adapted to run on a guide beam 22.
The guide wheel assemblies 16 are connected in pairs to the bogie frame 12, one on each of its sides, so as to straddle the guide beam. Figure 1 shows a bogie 10 with four guide wheel assemblies 16. This is a particular case by way of example only as there could be a minimum of two guide wheels assemblies 16 guiding the bogie 10.
Figure 2, now concurrently referred to, shows a cross-section of one guide wheel assembly 16. The guide wheel assembly 16 comprises a vertically aligned shaft 24, a bearing assembly 26, a hub 28, a guide wheel 30 and a retaining device 32.
The shaft 24 is connected to the bogie frame 12 by its upper portion 18 so as to point downwardly. The bearing assembly 26, which is inserted over the shaft 24, may either be made of two separated bearings or one sealed bearing cartridge.
4 The hub 28 is inserted over the bearing assembly 26 so as to spin around the shaft 24. The hub 28 is equipped with a hub protrusion 34 extending radially outwardly from a hub body 36. The hub protrusion 34 may take different shapes, such as a tab or a plurality of equidistant tabs placed on a periphery of the hub body 36. The hub protrusion 34 may also take the shape of a flange, surrounding the hub body 36.
The guide wheel 30 is mounted on the hub 28 through a wheel mounting interface 38. The guide wheel 30 comprises a rim 40 and a tire 42 which may be inflatable. The guide wheel 30, through its tire 42, is operative to contact one side of the guide beam 22 and, in operation, to guide the bogie 10 along the guide beam 22.
The retaining device 32 is connected to the shaft 24, preferably removably.
The retaining device 32 has a retaining flange 44 extending radially inwardly from a retaining device body 46 and below the hub protrusion 34 so as to capture the hub protrusion 34 in case of failure.
The retaining device 32 may be designed as a removable retaining ring, which facilitates assembly of the hub 28 over the shaft 24. The retaining device 32, or retaining ring, may be made of two complementary halves forming the retaining ring when placed adjacent to each other along a median vertical plane.
The hub protrusion 34 and the retaining flange 44 are typically placed distal a lower extremity 48 of the shaft 24, above the wheel mounting interface 38 so that the guide wheel 30 may be easily disassembled from the shaft 24 for servicing without having to remove the retaining device 32.
Optionally, the guide wheel assembly 16 may be equipped with a sensor 50 placed in proximity of the hub protrusion 34 so as to be capable of detecting an axial movement of the hub protrusion 34 with respect to the shaft 24 or with respect to the retaining device 32, which is attached on the shaft 24. Beyond a certain threshold, this axial movement may be interpreted as a failure of the guide wheel assembly 16 and an alarm signal may be sent. The sensor 50 may be of different types of sensor, such as a proximity sensor, infrared sensor, capacitive sensor and photo-electric sensor. This enumeration of types of sensors is solely intended to provide examples and should not be considered limitative. Indeed, a person skilled in the art may find that other types of sensors could be used to provide a similar result.
The guide wheel 30 is mounted on the hub 28 through a wheel mounting interface 38. The guide wheel 30 comprises a rim 40 and a tire 42 which may be inflatable. The guide wheel 30, through its tire 42, is operative to contact one side of the guide beam 22 and, in operation, to guide the bogie 10 along the guide beam 22.
The retaining device 32 is connected to the shaft 24, preferably removably.
The retaining device 32 has a retaining flange 44 extending radially inwardly from a retaining device body 46 and below the hub protrusion 34 so as to capture the hub protrusion 34 in case of failure.
The retaining device 32 may be designed as a removable retaining ring, which facilitates assembly of the hub 28 over the shaft 24. The retaining device 32, or retaining ring, may be made of two complementary halves forming the retaining ring when placed adjacent to each other along a median vertical plane.
The hub protrusion 34 and the retaining flange 44 are typically placed distal a lower extremity 48 of the shaft 24, above the wheel mounting interface 38 so that the guide wheel 30 may be easily disassembled from the shaft 24 for servicing without having to remove the retaining device 32.
Optionally, the guide wheel assembly 16 may be equipped with a sensor 50 placed in proximity of the hub protrusion 34 so as to be capable of detecting an axial movement of the hub protrusion 34 with respect to the shaft 24 or with respect to the retaining device 32, which is attached on the shaft 24. Beyond a certain threshold, this axial movement may be interpreted as a failure of the guide wheel assembly 16 and an alarm signal may be sent. The sensor 50 may be of different types of sensor, such as a proximity sensor, infrared sensor, capacitive sensor and photo-electric sensor. This enumeration of types of sensors is solely intended to provide examples and should not be considered limitative. Indeed, a person skilled in the art may find that other types of sensors could be used to provide a similar result.
5 The present invention has been described with regard to preferred embodiments. The description as much as the drawings were intended to help the understanding of the invention, rather than to limit its scope. It will be apparent to one skilled in the art that various modifications may be made to the invention without departing from the scope of the invention as described herein, and such modifications are intended to be covered by the present description. The invention is defined by the claims that follow.
Claims (11)
1. A bogie for a monorail adapted to travel on a guide beam, the bogie comprising:
a bogie frame;
a load wheel, said load wheel being connected to said bogie frame and being adapted to run on the guide beam;
two guide wheel assemblies, each one of said two guide wheel assemblies being connected to said bogie frame on a different side of said bogie frame so that the bogie straddles the guide beam, each one of said two guide wheel assemblies having:
a shaft, said shaft being vertically aligned;
a bearing assembly, said shaft being inserted in said bearing assembly;
a hub, said hub having a hub protrusion extending radially outwardly, said bearing assembly being inserted in said hub so that said hub may spin around said shaft;
a guide wheel, said guide wheel being attached to said hub and being operative to contact a side of the guide beam; and a retaining device, said retaining device being connected to said shaft, said retaining device having a retaining flange extending radially inwardly below said hub protrusion so as to capture said hub protrusion in case of failure.
a bogie frame;
a load wheel, said load wheel being connected to said bogie frame and being adapted to run on the guide beam;
two guide wheel assemblies, each one of said two guide wheel assemblies being connected to said bogie frame on a different side of said bogie frame so that the bogie straddles the guide beam, each one of said two guide wheel assemblies having:
a shaft, said shaft being vertically aligned;
a bearing assembly, said shaft being inserted in said bearing assembly;
a hub, said hub having a hub protrusion extending radially outwardly, said bearing assembly being inserted in said hub so that said hub may spin around said shaft;
a guide wheel, said guide wheel being attached to said hub and being operative to contact a side of the guide beam; and a retaining device, said retaining device being connected to said shaft, said retaining device having a retaining flange extending radially inwardly below said hub protrusion so as to capture said hub protrusion in case of failure.
2. The bogie of claim 1 wherein said hub protrusion is a hub flange and wherein said retaining device is a removable retaining ring.
3. The bogie of claim 2 wherein said hub flange and said retaining flange are placed distal a lower extremity of said shaft.
4. The bogie of claim 3 wherein said guide wheel is placed below said hub flange when said bogie is in a working position.
5. The bogie of claim 2 wherein said retaining ring is made of two halves, said two halves being complementary to form said retaining ring when placed adjacent to each other along a median vertical plane.
6. The bogie of claim 2 wherein said bearing assembly is a sealed bearing cartridge.
7. The bogie of claim 1 further comprising a sensor proximate said hub protrusion, said sensor being operative to detect an axial movement of said hub protrusion with respect to one of said shaft and said retaining device.
8. The bogie of claim 7 wherein said sensor is of a type consisting of one of proximity, infrared, capacitive and photo-electric.
9. The bogie of claim 8 wherein said hub protrusion is a hub flange and wherein said retaining device is a removable retaining ring.
10. The bogie of claim 1 wherein said shaft is pointing downwardly.
11. The bogie of claim 1 wherein said guide wheel comprises a rim and an inflatable tire.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2930108A CA2930108C (en) | 2016-05-13 | 2016-05-13 | Monorail guide wheel with integral retention device |
| CN201620734030.XU CN206031385U (en) | 2016-05-13 | 2016-07-12 | Be fit for single track bogie at nose girder up stroke |
| AU2017201264A AU2017201264A1 (en) | 2016-05-13 | 2017-02-24 | Monorail guide wheel with integral retention device |
| BR102017005977-4A BR102017005977A2 (en) | 2016-05-13 | 2017-03-23 | MOUNTAIN GUIDE WHEEL WITH INTEGRATED RETENTION DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2930108A CA2930108C (en) | 2016-05-13 | 2016-05-13 | Monorail guide wheel with integral retention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2930108A1 true CA2930108A1 (en) | 2016-07-18 |
| CA2930108C CA2930108C (en) | 2017-01-03 |
Family
ID=56413993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2930108A Active CA2930108C (en) | 2016-05-13 | 2016-05-13 | Monorail guide wheel with integral retention device |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN206031385U (en) |
| AU (1) | AU2017201264A1 (en) |
| BR (1) | BR102017005977A2 (en) |
| CA (1) | CA2930108C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809221A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Bogie assembly and rail vehicle |
| CN106985856A (en) * | 2016-09-21 | 2017-07-28 | 比亚迪股份有限公司 | Bogie and rail vehicle and Rail Transit System with it |
| CN110626117A (en) * | 2018-06-25 | 2019-12-31 | 比亚迪股份有限公司 | Horizontal wheel assembly for railway vehicle, bogie and railway vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107187460B (en) * | 2017-05-11 | 2019-03-01 | 同济大学 | A kind of single-axle bogie of the Straddle type monorail vehicle using pivoted arm axle box |
-
2016
- 2016-05-13 CA CA2930108A patent/CA2930108C/en active Active
- 2016-07-12 CN CN201620734030.XU patent/CN206031385U/en active Active
-
2017
- 2017-02-24 AU AU2017201264A patent/AU2017201264A1/en not_active Abandoned
- 2017-03-23 BR BR102017005977-4A patent/BR102017005977A2/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809221A (en) * | 2016-09-21 | 2017-06-09 | 比亚迪股份有限公司 | Bogie assembly and rail vehicle |
| CN106985856A (en) * | 2016-09-21 | 2017-07-28 | 比亚迪股份有限公司 | Bogie and rail vehicle and Rail Transit System with it |
| CN106985856B (en) * | 2016-09-21 | 2019-11-08 | 比亚迪股份有限公司 | Bogie and rail vehicle and Rail Transit System with it |
| CN110626117A (en) * | 2018-06-25 | 2019-12-31 | 比亚迪股份有限公司 | Horizontal wheel assembly for railway vehicle, bogie and railway vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2930108C (en) | 2017-01-03 |
| AU2017201264A1 (en) | 2017-11-30 |
| BR102017005977A2 (en) | 2018-04-03 |
| CN206031385U (en) | 2017-03-22 |
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