CN216610722U - Safety wheel device for railway vehicle - Google Patents
Safety wheel device for railway vehicle Download PDFInfo
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- CN216610722U CN216610722U CN202123295394.2U CN202123295394U CN216610722U CN 216610722 U CN216610722 U CN 216610722U CN 202123295394 U CN202123295394 U CN 202123295394U CN 216610722 U CN216610722 U CN 216610722U
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- vehicle
- wheel
- wheel shaft
- connecting seat
- safety
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Abstract
The utility model discloses a safety wheel device for a railway vehicle, which is arranged on a vehicle bogie and comprises a connecting seat, a wheel shaft and polyurethane wheels, wherein the connecting seat is fixedly arranged on the vehicle bogie, the wheel shaft is arranged on the connecting seat in an interference fit manner according to a preset interference magnitude, the wheel shaft is connected with the connecting seat in a hot sleeved manner, the polyurethane wheels are arranged at two ends of the wheel shaft through conical bearings, the two polyurethane wheels can rotate relatively and independently, and a stop washer is arranged at the shaft end part of the wheel shaft through a clearance adjusting nut. When the vehicle has fault working conditions of air leakage, tire burst and the like, the rail beam is contacted with the rail beam, the upper weight of the whole vehicle is borne, the running is stable, and the low-speed running requirement of the vehicle is met. The safety wheel device for the railway vehicle can meet the requirement of low-speed running under the working condition of vehicle failure, can meet the requirements of light weight and small occupied space, and is low in maintenance cost and long in service life.
Description
Technical Field
The utility model belongs to the technical field of rail vehicle accessories, and particularly relates to a safety wheel device for a rail vehicle, in particular to a safety wheel device capable of temporarily replacing vehicle wheels to work when the vehicle has fault working conditions of air leakage, tire burst and the like.
Background
When the vehicle is operated at high speed on the track, the wheels of the rail vehicle bear the entire weight of the vehicle and also simultaneously bear various other forces transmitted from the axle, the rail beam, and the like. Therefore, when the vehicle runs on the track at a high speed, faults such as air leakage and tire burst are easy to occur. And once the wheels of the rail vehicle have faults, the safe operation of the rail vehicle is directly influenced. In order to solve the problem, a safety wheel device can be additionally arranged on the railway vehicle, but the conventional safety wheel device has the problems of unreasonable structural design, unstable operation, short service life, easiness in damage, inconvenience in installation, complex overall structure and the like, and can not effectively ensure the safe operation of the railway vehicle when the vehicle has fault working conditions such as air leakage, tire burst and the like.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides the safety wheel device which can temporarily replace the wheels of the vehicle to work when the vehicle has fault working conditions such as air leakage, tire burst and the like, so that the rail vehicle can run safely and stably.
In order to achieve the purpose, the utility model provides the following technical scheme:
the safety wheel device for the rail vehicle is mounted on a vehicle bogie and comprises a connecting seat, a wheel shaft and polyurethane wheels, wherein the connecting seat is fixedly mounted on the vehicle bogie, the wheel shaft is mounted on the connecting seat in an interference fit mode according to a preset interference magnitude, the wheel shaft is connected with the connecting seat in a hot sleeving mode, the polyurethane wheels are mounted at two ends of the wheel shaft through conical bearings and can rotate relatively and independently, and a stop washer is mounted at the shaft end part of the wheel shaft through a clearance adjusting nut.
Further, the rail vehicle comprises vehicle wheels, the vehicle wheels are in contact with the rail beam when the vehicle runs normally, and the safety wheel device is positioned above the contact point of the vehicle wheels and the rail beam and is not in contact with the rail beam.
Furthermore, the end of the wheel shaft is provided with a framework oil seal and an oil seal cover which is matched with the framework oil seal, and the framework oil seal is arranged at the end of the wheel shaft through a friction sleeve.
Furthermore, the polyurethane wheel is arranged on the wheel shaft through a back-to-back double-row conical bearing.
Further, the connecting seat is fixedly connected with the vehicle bogie through a high-strength bolt matched with a NORDLOCK gasket.
Further, the oil seal cover is installed on the polyurethane wheel through the cooperation of an end cover screw and a disc-shaped gasket.
Further, the clearance adjusting nut and the stop washer are mounted on the outer side of the oil seal cover, and a shaft end washer is further arranged between the stop washer and the oil seal cover.
Further, 2 safety wheel devices are mounted on each bogie.
Compared with the prior art, the utility model has the beneficial effects that:
when the vehicle has fault working conditions of air leakage, tire burst and the like, the safety wheel device for the railway vehicle is in contact with the track beam, so that the upper weight of the whole vehicle is borne, the running is stable, and the low-speed running requirement of the vehicle is met. The safety wheel device for the railway vehicle can meet the requirement of low-speed operation under the working condition of vehicle failure, can meet the requirements of light weight and small occupied space, and has low maintenance cost and long service life.
Drawings
Fig. 1 is an exploded view of a safety wheel apparatus for a railway vehicle;
FIG. 2 is a self-contained construction view of the safety wheel assembly for a railway vehicle;
FIG. 3 is a side view of a safety wheel apparatus for a rail vehicle;
fig. 4 is a bottom view of the safety wheel device for a railway vehicle.
The labels in the figure are: 1-a connecting seat; 2-a wheel axle; 3-friction sleeve; 4-framework oil seal; 5-sealing the oil cover; 6-conical bearings; 7-polyurethane wheels; 8-end cap screws; 9-butterfly washer; 10-shaft end washer; 11-a stop washer; 12-a clearance adjustment nut; 13-connecting the fastening sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment provides a safety wheel device for rail vehicle, this safety wheel device is mainly used on the tourism monorail transit vehicle, and it installs on vehicle bogie, is connected with bogie frame, and rail vehicle includes the vehicle wheel, and during vehicle normal operating, the vehicle wheel contacted with the track roof beam, but the safety wheel device is located the top of vehicle wheel and track roof beam contact point, does not contact with the track roof beam. When the vehicle has fault working conditions such as air leakage, tire burst and the like, the safety wheel device is in contact with the track beam, the upper weight of the whole vehicle is borne, and the low-speed running requirement of the vehicle is met.
The safety wheel device for a railway vehicle according to the present embodiment is configured as shown in fig. 1 to 4, and mainly includes a connecting base 1, a wheel axle 2, and a polyurethane wheel 7. In this embodiment, the safety wheel device is provided with 2 wheels per bogie. The safety wheel device is arranged on the track beam surface, and the safety wheel device is arranged on the track beam surface and is provided with a proper height, so that the safety wheel device can not be in contact with the track beam when a vehicle normally runs, and can be rapidly in contact with the track beam under the condition that the tire of the vehicle is deflated, and the dangerous condition is avoided.
The connecting seat 1 comprises a bogie connecting part and a rotating shaft mounting part, and the bogie connecting part and the rotating shaft mounting part are mutually perpendicular and connected, so that the side surface of the connecting seat 1 is integrally T-shaped. The connection of the connecting base 1 and the bogie needs to have higher reliability, therefore, the embodiment preferably adopts a 10.9-grade high-strength bolt to connect the connecting base of the safety wheel device and the framework of the bogie together, and can further adopt a NORDLOCK gasket for preventing looseness. The connecting structure is high in connection reliability and can well meet the vehicle operation requirement.
The wheel shaft 2 is fixedly arranged at the rotating shaft mounting part of the connecting seat 1. Specifically, the wheel shaft 2 traverses the rotating shaft mounting part of the connecting seat 1 and is parallel to the bogie connecting part of the connecting seat 1. Preferably, this safety wheel device's shaft 2 and connecting seat 1 adopt interference fit's mode to connect, through choosing suitable magnitude of interference, can guarantee that shaft 2 installs firmly on connecting seat 1. As a further preferred embodiment, the wheel axle 2 and the connecting seat 1 are mounted in a shrink fit manner. In this embodiment, the above-mentioned connection structure of shaft 2 and connecting seat 1, it is more convenient than current bolted connection mode installation, and the structure is simpler.
The polyurethane wheels 7 are rotatably arranged at two ends of the wheel shaft 2, namely the two ends of the wheel shaft 2 are respectively provided with one polyurethane wheel 7, and the two polyurethane wheels 7 are respectively positioned at two sides of the rotating shaft installation part of the connecting seat 1. The safety wheel device adopts the polyurethane wheel for bearing, has small wheel diameter, can meet the requirement of low-speed operation under the working condition of vehicle failure, can also meet the requirements of light weight and small occupied space, and has low maintenance cost and good economy. In order to ensure that the polyurethane wheels 7 can effectively ensure the stable running of the vehicle while bearing the upper weight of the whole vehicle, in the embodiment, the two polyurethane wheels 7 are both mounted on the wheel shaft 2 through conical bearings, which enables the two polyurethane wheels 7 to rotate relatively independently. Further preferably, the conical bearing adopts a back-to-back type double-row conical bearing, the safety wheel device selects the back-to-back type double-row conical bearing for bearing, the bearing capacity is high, the bearing is lubricated by grease, the maintenance is avoided in the guarantee period, and the maintenance cost can be reduced.
In this embodiment, a stop washer 11 is mounted on the shaft end of the wheel shaft 2 via a lash adjustment nut 12. The axial clearance of the conical bearing can be conveniently adjusted by adjusting the clearance adjusting nut 12 through the structure of the stop washer 11 and the clearance adjusting nut 12 at the shaft end part of the safety wheel device, and the clearance adjusting nut 12 is locked through the stop washer 11 after the required clearance is obtained.
Through adopting above-mentioned structure for when fault conditions such as gas leakage, flat tire appear in the vehicle, the rail vehicle of this embodiment is with safe wheel device and the contact of track roof beam, bears the upper portion weight of whole vehicle, and the operation is stable, has guaranteed the low-speed demand of traveling of vehicle. The safety wheel device for the railway vehicle can meet the requirement of low-speed operation under the working condition of vehicle failure, can meet the requirements of light weight and small occupied space, and has low maintenance cost and long service life.
In this embodiment, a framework oil seal 3 and an oil seal cover 5 installed in cooperation with the framework oil seal 3 are further installed at the end of the wheel shaft 2, the framework oil seal 3 is installed at the end of the wheel shaft 2, and a friction sleeve 3 is further arranged between the framework oil seal 3 and the wheel shaft 2. Specifically, the oil seal cover 5 is mounted on the polyurethane wheel 7 by the cooperation of an end cover screw 8 and a disc washer 9. The lash adjusting nut 12 and the stopper washer 11 are mounted on the outer side of the oil seal cover 5, and a shaft end washer 10 is further provided between the stopper washer 11 and the oil seal cover 5. The safety wheel device adopts the framework oil seal to design a sealing structure, and meanwhile, the friction sleeve is arranged on the shaft section, so that the direct friction between the oil seal and the shaft is avoided, and the service life of the shaft is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The safety wheel device for the rail vehicle is mounted on a vehicle bogie and is characterized by comprising a connecting seat, a wheel shaft and polyurethane wheels, wherein the connecting seat is fixedly mounted on the vehicle bogie, the wheel shaft is mounted on the connecting seat in an interference fit manner according to a preset interference magnitude, the wheel shaft is connected with the connecting seat in a hot-sleeved manner, the polyurethane wheels are mounted at two ends of the wheel shaft through conical bearings, the two polyurethane wheels can rotate relatively and independently, and a stop washer is mounted at the end part of the wheel shaft through a clearance adjusting nut.
2. A safety wheel arrangement for a rail vehicle according to claim 1, wherein the rail vehicle comprises vehicle wheels which are in contact with the rail beam during normal operation of the vehicle, and the safety wheel arrangement is located above the point of contact of the vehicle wheels with the rail beam and is not in contact with the rail beam.
3. A safety wheel device for a railway vehicle as claimed in claim 1 or 2, wherein a skeleton oil seal and an oil seal cover matched with the skeleton oil seal are mounted at the end of the wheel shaft, and the skeleton oil seal is mounted at the end of the wheel shaft through a friction sleeve.
4. A safety wheel arrangement for a rail vehicle according to claim 1 or 2, wherein the polyurethane wheel is mounted on the axle by means of back-to-back double row conical bearings.
5. A safety wheel arrangement for a railway vehicle as claimed in claim 1, wherein the attachment socket is secured to the vehicle bogie by high strength bolting with nordllock washers.
6. A safety wheel arrangement according to claim 3, wherein the oil cap is mounted to the polyurethane wheel by means of a cap screw and disc washer.
7. The safety wheel device for railway vehicles according to claim 1, wherein the lash adjustment nut and the stop washer are installed at an outer side of the oil seal cover, and a shaft end washer is further provided between the stop washer and the oil seal cover.
8. A safety wheel arrangement for a rail vehicle as claimed in claim 1, wherein 2 safety wheel arrangements are mounted on each bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123295394.2U CN216610722U (en) | 2021-12-24 | 2021-12-24 | Safety wheel device for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123295394.2U CN216610722U (en) | 2021-12-24 | 2021-12-24 | Safety wheel device for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216610722U true CN216610722U (en) | 2022-05-27 |
Family
ID=81684676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123295394.2U Active CN216610722U (en) | 2021-12-24 | 2021-12-24 | Safety wheel device for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216610722U (en) |
-
2021
- 2021-12-24 CN CN202123295394.2U patent/CN216610722U/en active Active
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