CN109733433B - Low-floor vehicle, bogie and shaft end structure thereof - Google Patents
Low-floor vehicle, bogie and shaft end structure thereof Download PDFInfo
- Publication number
- CN109733433B CN109733433B CN201910023564.XA CN201910023564A CN109733433B CN 109733433 B CN109733433 B CN 109733433B CN 201910023564 A CN201910023564 A CN 201910023564A CN 109733433 B CN109733433 B CN 109733433B
- Authority
- CN
- China
- Prior art keywords
- speed measuring
- gear
- friction disc
- shaft end
- axle
- 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.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The invention discloses a low-floor vehicle, a bogie and a shaft end structure thereof, wherein the shaft end structure comprises a speed measuring gear and a friction disc; the outer end face of the speed measuring gear is provided with a plurality of speed measuring teeth which are uniformly distributed in the circumferential direction; the friction disc is fixedly connected with the speed measuring gear and is specifically arranged on the outer end face of the speed measuring gear on the radial periphery of the speed measuring gear; the shaft end front cover is arranged on the outer sides of the speed measuring gear and the friction disc, the center of the body of the speed measuring gear is fixedly connected with the shaft end of the axle through a middle through hole of the speed measuring gear, and a speed sensor interface and an electric brush interface which are respectively corresponding to the speed measuring gear and the friction disc are arranged on the shaft end front cover. The bogie axle end structure is optimized, the axle end space is fully utilized to integrate the grounding and speed measuring functions into one bogie axle end, the structure is simple and reliable, the complexity of the bogie design is reduced, and the wiring difficulty is further reduced.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a low-floor vehicle, a bogie and a shaft end structure thereof.
Background
As is well known, low-floor vehicles are widely favored due to their simple structure and high environmental adaptability. However, in the design process of the low-floor vehicle, on one hand, the shaft end of the low-floor vehicle is compact in structure and narrow in space, the functional requirements are relatively more, and certain design difficulty exists in the arrangement of the shaft end speed sensor and the grounding device. The prior art solution is to arrange different sensors at different truck axle ends, respectively, limited by its own structure, which increases the complexity of the whole truck and at the same time increases the difficulties of vehicle wiring.
In view of the above, there is a need for a new and improved design for a low-floor vehicle axle stub to overcome the above-mentioned deficiencies of the prior art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a low-floor vehicle, a bogie and a shaft end structure thereof, wherein the shaft end structure is structurally optimized aiming at the speed measuring and grounding functions, the shaft end assembly space is fully utilized, and the wiring difficulty and the bogie complexity are greatly reduced.
The invention provides a bogie shaft end structure, which comprises a speed measuring gear and a friction disc; the speed measuring gear with a middle through hole is used for being fixedly connected with the end face of a wheel, and a plurality of speed measuring teeth are uniformly distributed in the circumferential direction on the outer end face of the speed measuring gear; the friction disc is fixedly connected with the speed measuring gear and is specifically configured on the outer end face of the speed measuring gear on the radial periphery of the speed measuring teeth; the shaft end front cover is arranged on the outer sides of the speed measuring gear and the friction disc, the center of the body of the speed measuring gear is fixedly connected with the shaft end of the axle through the middle through hole of the speed measuring gear, and the shaft end front cover is provided with a speed sensor interface and an electric brush interface which are respectively corresponding to the speed measuring gear and the friction disc.
Preferably, the speed measuring gear is provided with an inner concave ring groove, the inner side of the ring groove is provided with a speed measuring tooth body extending axially, and the speed measuring tooth body is provided with an annular outer end face provided with the speed measuring tooth; the friction disk with the annular outside the gear that tests the speed the laminating is fixed, and has from its body inner edge axial extension spacing portion, spacing portion cartridge in the annular to establish radial positioning between them.
Preferably, the middle part of the shaft end front cover is provided with an axially extending middle ring body, and the middle ring body is inserted between the inner hole of the friction disc and the outer peripheral surface of the speed measuring tooth body; and a sealing pair is arranged between the outer peripheral surface of the middle ring body and the inner hole of the friction disc and/or between the inner hole of the middle ring body and the outer peripheral surface of the speed measuring tooth body.
Preferably, the outer peripheral surface of the speed measuring tooth body is provided with a sealing element mounting groove, and a sealing element is arranged in the sealing element mounting groove to form a sealing pair between the inner hole of the middle ring body and the outer peripheral surface of the speed measuring tooth body.
Preferably, the middle ring body is configured to: when the shaft end front cover is fixedly connected with the shaft end of the axle, the middle ring body is axially pressed against the groove bottom of the ring groove.
Preferably, the speed measuring gear is provided with a convex ring formed by extending from the body of the speed measuring gear in the axial direction and used for pressing against the bearing outer ring between the wheel and the axle.
Preferably, the friction disc and the speed measuring gear are fixedly connected by a plurality of threaded fasteners which are uniformly distributed in the circumferential direction.
The invention also provides a bogie which comprises an axle and wheels which are matched, and also comprises the bogie axle end structure; a speed sensor and a grounding device are fixedly arranged on the shaft end front cover, wherein a signal processing end of the speed sensor is inserted into an interface of the speed sensor to obtain the rotating speed of the wheel; the brush of the grounding device extends into the friction disc through the brush interface to be matched with the friction disc so as to realize grounding and electric conduction.
Preferably, the center of the body of the shaft end front cover is arranged in the middle through hole of the speed measuring gear in a penetrating mode, and the shaft end front cover is fixedly connected with the shaft end of the axle by a plurality of threaded fasteners.
The invention also provides a low-floor vehicle comprising a bogie as described above.
Aiming at the characteristic that the space of the axle end of the low-floor vehicle is limited, the invention innovatively integrates the grounding function and the speed measuring function at the axle end of the bogie. Specifically, a plurality of speed measuring teeth which are uniformly distributed in the circumferential direction are arranged on the outer end face of a speed measuring gear which is fixedly connected with a wheel and used for being matched with a speed sensor to monitor the rotating speed of the wheel; a friction disc matched with an electric brush of the grounding device is fixedly arranged on the outer end face of the speed measuring gear on the radial outer side of the speed measuring teeth so as to realize grounding conduction; meanwhile, the shaft end front cover which covers the outer sides of the speed measuring gear and the friction disc is fixedly connected with the shaft end of the axle through the middle through hole of the speed measuring gear, and a speed sensor interface and an electric brush interface which are respectively corresponding to the speed measuring teeth and the friction disc are arranged on the shaft end front cover. So set up, the radial inboard of bogie axle head is for testing the speed tooth, the radial outside is the friction disk, and both compounds admittedly as an organic whole, make full use of the limited space of axle head and realize above-mentioned two basic functions. Compared with the prior art, the invention has the following beneficial effects:
firstly, the axle end space is fully utilized to integrate the grounding function and the speed measuring function at the axle end of the bogie, and the bogie has the characteristic of simple and reliable structure, thereby reducing the complexity of the design of the bogie and providing technical support for effectively reducing the manufacturing cost of the whole bogie; meanwhile, the grounding function and the speed measuring function are integrated at the shaft end of the bogie, so that the wiring difficulty is further reduced.
Secondly, in a preferred embodiment of the present invention, the speed measuring gear is provided with an inwardly concave ring groove, the speed measuring teeth and the friction disk are respectively located at the inner side and the outer side of the ring groove along the radial direction, and the friction disk has a limiting part axially extending from the inner edge of the body thereof, and the limiting part can be inserted into the ring groove. On one hand, radial positioning between the friction disc and the speed measuring gear is established, and assembly prepositioning can be formed before the friction disc and the speed measuring gear are assembled and fixed, so that the assembly precision is ensured; on the other hand, the assembly pre-positioning function is integrated in the speed measuring gear body, so that the compactness of the whole structure is further improved, and the function of ensuring the assembly precision is realized on the basis of not increasing the use space.
Thirdly, in another preferred scheme of the invention, an axially extending middle ring body is additionally arranged in the middle of the shaft end front cover and is inserted between the inner hole of the friction disc and the outer peripheral surface of the speed measuring tooth body; and sealing pairs are arranged between the outer peripheral surface of the middle ring body and the inner hole of the friction disc and/or between the inner hole of the middle ring body and the outer peripheral surface of the speed measuring tooth body. Therefore, the sealing separation is established between the matching surface of the friction disc and the electric brush and the internal structure, carbon powder generated by grounding friction can be effectively prevented from polluting other devices at the shaft end, and the maintenance and overhaul are avoided from being carried out too frequently, so that the operation and maintenance cost can be reduced.
Finally, the speed measuring gear further extends axially from the body to form a convex ring which is used for pressing against a bearing outer ring between the wheel and the axle; that is to say, the axle end structure of this scheme has had the function effect of bearing location between conventional wheel and the axletree simultaneously on the basis of reliably realizing ground connection and speed measuring function, has further optimized the space utilization of axle end from this.
Drawings
Fig. 1 is a schematic overall structure diagram of a bogie axle end structure according to an embodiment.
In the figure:
the speed measuring gear comprises a speed measuring gear 1, a middle through hole 11, a speed measuring tooth body 12, a speed measuring tooth 121, a ring groove 13, a convex ring 14, a sealing element mounting groove 15, a friction disc 2, a limiting part 21, a shaft end front cover 3, a speed sensor interface 31, a middle ring body 33, a central part 34, a speed sensor 4, a grounding device 5 and a sealing element 6.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Without loss of generality, the embodiment takes the form of the bogie axle end shown in fig. 1 as a description basis to explain in detail the innovative improvement of the axle end structure proposed by the present application. It should be understood that the contour shapes and dimensional proportional relationships of the bogie axle and wheel shown in the figures do not constitute a substantial limitation on the claimed solution.
Please refer to fig. 1, which is a schematic overall structural diagram of a bogie axle end structure according to the present embodiment.
It should be clear that the assembly relationship between the wheel 10 and the axle 20 in the present embodiment is the same as that in the prior art, and a bearing 30 is disposed between the wheel 10 and the axle 20 to realize the rotation function of the wheel 10. Of course, only one side of the shaft end is partially shown in fig. 1 for clarity of the core invention of the present application.
As shown in figure 1, the bogie shaft end structure provided by the scheme comprises a speed measuring gear 1, a friction disc 2 and a shaft end front cover 3, wherein the speed measuring gear and the friction disc are fixedly connected in a composite mode, and the shaft end front cover is covered on the outer sides of the speed measuring gear and the friction disc.
The speed measuring gear 1 is used for being fixedly connected with the end face of a wheel 10 and is provided with a middle through hole 11. A plurality of speed measuring teeth 121 are circumferentially and uniformly distributed on the outer end surface of the speed measuring gear 1. The friction disc 2 is fixedly connected with the speed measuring gear 1, namely the friction disc and the speed measuring gear are fixedly connected into a whole in a compounding way; the friction disc 2 is arranged on the outer end face of the speed measuring gear 1 at the radial periphery of the speed measuring tooth 121 in terms of space arrangement; that is to say, the radial inside of the axle head of the bogie is provided with the speed measuring teeth 121, and the radial outside is provided with the friction disc 2, so that the limited space of the axle head is fully utilized to optimally arrange the basic components with the functions of grounding and speed measuring.
Wherein, the shaft end front cover 3 covers the outer sides of the speed measuring gear 1 and the friction disc 2 to form an integral shaft end scheme. The body center part of this axle head protecgulum 3 is used for through the middle part perforating hole 11 of speed measuring gear 1 with the axle head fixed connection of axletree 20, correspondingly, seted up on the axle head protecgulum 3 with measure speed tooth 121 and the corresponding speed sensor interface 31 and the brush interface that sets up of friction disk 2 respectively (based on drawing line sheltering from the relation not shown). The scheme integrates the grounding function and the speed measuring function at one axle end of the bogie, has simple and reliable structure, reduces the complexity of the design of the bogie on the one hand, and further reduces the wiring difficulty simultaneously.
Specifically, the speed sensor 4 can be inserted and fixed in the speed sensor interface 31, the speed measuring gear 1 fixed thereon rotates synchronously with the rotation of the wheel 10, the signal processing end of the speed sensor 4 is inserted and installed in the speed sensor interface 31, and sends a signal to the speed measuring teeth 121 on the outer end face of the speed measuring gear 1, and sequentially generates an electric pulse signal. The wheel rotating speed can be obtained by calculating according to the detected pulse number; it should be noted that the specific structural form and the number of the speed measuring teeth 121 can be selected according to the action mechanism and the accuracy requirement of the adaptive speed sensor 4, and those skilled in the art can implement the method based on the prior art, which is not the core invention point of the present application, and therefore, the details are not described herein again.
In addition, a brush (not shown in the figure) of the grounding device 5 extends into the shaft end front cover 3 through a brush interface to be matched with the friction disc 2, so as to realize grounding conduction. Similarly, the grounding device 5 can also be implemented based on the prior art, and is not described in detail herein.
For further effective utilization of the shaft end space, further sufficient optimization can be made in a preferred embodiment. As shown in fig. 1, an inward concave ring groove 13 is provided on the outer end surface of the speed measuring gear 1, the speed measuring teeth 121 and the friction disc 2 are respectively located on the inner side and the outer side of the ring groove 13 along the radial direction, specifically, the speed measuring teeth body 12 extending axially is provided on the inner side in the radial direction of the ring groove 13, the speed measuring teeth body 12 has an annular outer end surface configured with the speed measuring teeth 121, and the friction disc 2 body is fixedly attached to the speed measuring gear 1 body on the outer side in the radial direction of the ring groove 13. As further shown in fig. 1, the friction disc 2 has a limiting portion 21 extending axially from an inner edge of the friction disc body, and the limiting portion 21 is inserted into the annular groove 13 to establish radial positioning of the two; that is, the relation between the outer diameter of the limiting part 21 and the inner diameter of the ring groove 13 needs to maintain the radial positioning dimension, and the assembling pre-positioning can be formed before the two are assembled and fixed, so that the assembling precision is ensured; obviously, the assembly pre-positioning function is integrated in the speed measuring gear 1 body, so that the compactness of the whole structure is further improved, and the function of ensuring the assembly precision is realized on the basis of not increasing the use space.
Further, the middle part of the shaft end front cover 3 is provided with an axially extending middle ring body 33, the middle ring body 33 is inserted between the inner hole of the friction disc 2 and the outer peripheral surface of the speed measuring tooth body 12, and a sealing pair is arranged between the inner hole of the middle ring body 33 and the outer peripheral surface of the speed measuring tooth body 12. In addition, establish sealed separation at the fitting surface of friction disk 2 and brush and inner structure, can prevent effectively that the carbon powder that ground friction produced from polluting other devices of axle head, avoid too frequently carrying out maintenance to can reduce the operation maintenance cost.
As shown in the drawings, the outer circumferential surface of the speed measuring tooth body 12 is provided with a sealing member installation groove 15, and the sealing member 6 is disposed in the sealing member installation groove 15 to form a sealing pair between the inner hole of the middle ring body 33 and the outer circumferential surface of the speed measuring tooth body 12. It should be understood that the sealing pair is not limited to the implementation shown in the drawings, and the above-mentioned sealing relationship may also be implemented in other manners, such as, but not limited to, providing an oil seal between the inner hole of the middle ring body 33 and the outer peripheral surface of the speed measuring tooth body 12, or interposing a sealing felt ring.
In addition, the sealing pair can also be arranged between the peripheral surface of the middle ring body 33 and the inner hole of the friction disc 2, and sealing separation can be established between the matching surface and the inner structure of the friction disc 2 and the electric brush to prevent carbon powder generated by friction from polluting other devices at the shaft end; of course, it is also possible to construct a seal pair at the outer peripheral surface and the inner hole position of the middle ring body 33 at the same time, and it is within the scope of the present application as long as the above-mentioned functional requirements are satisfied.
Further, the middle ring body 33 may also be configured to: when the shaft end front cover 3 is fixedly connected with the shaft end of the axle 20, the middle ring body 33 axially presses against the groove bottom of the annular groove 13 of the speed measuring gear 1. Thus, in addition to establishing reliable sealing, the middle ring body 33 can also be taken into consideration as a pre-positioning structure for assembling the shaft end front cover 3, obviously, the basic structure is also effectively utilized for realizing the function, namely, the occupied space is not increased after the function is added, and the core design concept of the scheme is met.
As shown, the tachometer gear 1 has a flange 14 formed extending axially from its body for pressing against the outer race of the bearing 30 between the wheel 10 and the axle 20. Similarly, the arrangement of the convex ring 14 enables the speed measuring gear 4 to have the function of providing axial limit for the bearing 30, that is, a retainer ring for the outer ring of the bearing does not need to be additionally arranged, and the whole structure is more compact and reasonable.
It should be noted that, based on the respective functional principle requirements of the speed measurement gear 1 and the friction disc 2, the speed measurement gear and the friction disc are made of different materials, and then are fixedly connected to form an integrated composite assembly, and then are assembled with the axle end of the bogie, so that the operation such as assembly and maintenance is facilitated. Preferably, the friction disc 2 and the speed measuring gear 1 can be fixedly connected by a plurality of threaded fasteners which are uniformly distributed in the circumferential direction.
In addition to the aforementioned bogie axle-end structure, the present embodiment also provides a bogie that includes the aforementioned axle-end structure. As shown in the figure, the body center part 34 of the shaft end front cover 3 is inserted into the middle through hole 11 of the speed measuring gear 1, and is fixedly connected with the shaft end of the axle 20 by a plurality of threaded fasteners. Here, other functional components of the bogie can be realized by using the prior art, and thus, the detailed description is omitted.
In addition to the aforementioned bogie and its axle-end structure, the present embodiment also provides a low-floor vehicle including the aforementioned bogie. Here, other functional components of the bogie can be realized by using the prior art, and thus, the detailed description is omitted.
In addition, the bogie axle end structure provided by the embodiment is not limited to be applied to low-floor vehicles, and the bogie axle end structure can also be applied to any other railway vehicle which needs an axle end to realize the functions of grounding and speed measurement.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (12)
1. A bogie shaft end structure, comprising:
the speed measuring gear is provided with a middle through hole and is used for being fixedly connected with the end face of the wheel, and a plurality of speed measuring teeth are uniformly distributed on the outer end face of the speed measuring gear in the circumferential direction;
the friction disc is fixedly connected with the speed measuring gear and is arranged on the outer end face of the speed measuring gear on the radial periphery of the speed measuring teeth;
the shaft end front cover is covered on the outer sides of the speed measuring gear and the friction disc, the center of the body of the shaft end front cover is fixedly connected with the shaft end of the axle through the middle through hole of the speed measuring gear, and a speed sensor interface and an electric brush interface which are respectively corresponding to the speed measuring gear and the friction disc are arranged on the shaft end front cover;
the speed measuring gear is provided with an inner concave ring groove, the radial inner side of the ring groove is provided with a speed measuring tooth body extending axially, and the speed measuring tooth body is provided with an annular outer end face provided with the speed measuring teeth; the friction disk with the radial outside of annular the gear laminating of testing the speed is fixed, and has from its body inner edge axial extension's spacing portion, spacing portion cartridge in the annular to establish radial positioning between them.
2. The shaft end structure of claim 1, wherein the middle portion of the shaft end front cover is provided with an axially extending middle ring body, and the middle ring body is inserted between the inner hole of the friction disc and the outer peripheral surface of the tachometer tooth body; and a sealing pair is arranged between the outer peripheral surface of the middle ring body and the inner hole of the friction disc and/or between the inner hole of the middle ring body and the outer peripheral surface of the speed measuring tooth body.
3. The axial end structure of claim 2, wherein the outer circumferential surface of the speed measuring tooth body is provided with a seal installation groove, and a seal is arranged in the seal installation groove to form a seal pair between the inner bore of the middle ring body and the outer circumferential surface of the speed measuring tooth body.
4. The shaft end structure of claim 3, wherein the middle ring body is configured to: when the shaft end front cover is fixedly connected with the shaft end of the axle, the middle ring body is axially pressed against the groove bottom of the ring groove.
5. The axial end structure of claim 4, wherein the speed measuring gear has a raised ring extending axially from a body thereof for pressing against an outer race of the bearing between the wheel and the axle.
6. An axial end structure as recited in claim 1, wherein the friction disc is fixedly coupled to the tachometer gear using a plurality of circumferentially spaced threaded fasteners.
7. A bogie comprising adapted axles and wheels, further comprising a bogie axle end structure according to any one of claims 1 to 6; a speed sensor and a grounding device are fixedly arranged on the shaft end front cover, wherein a signal processing end of the speed sensor is inserted into an interface of the speed sensor to obtain the rotating speed of the wheel; the brush of the grounding device extends into the friction disc through the brush interface to be matched with the friction disc so as to realize grounding and electric conduction.
8. The bogie as recited in claim 7, wherein the body center portion of the axle end front cover is inserted into the middle through hole of the tachometer gear and is fixedly connected to the axle end of the axle by a plurality of threaded fasteners.
9. A low floor vehicle comprising a bogie as claimed in any one of claims 7 or 8.
10. A friction disc is characterized in that the friction disc is fixedly connected with a speed measuring gear in a compounding mode, wherein the speed measuring gear with a middle through hole is used for being fixedly connected with the end face of a wheel, a plurality of speed measuring teeth are uniformly distributed in the circumferential direction on the outer end face of the speed measuring gear, and the friction disc is arranged on the outer end face of the speed measuring gear on the radial periphery of the speed measuring teeth; the speed measuring gear is provided with an inner concave ring groove, the radial inner side of the ring groove is provided with a speed measuring tooth body extending axially, and the speed measuring tooth body is provided with an annular outer end face provided with the speed measuring teeth; the friction disk with the radial outside of annular the gear laminating of testing the speed is fixed, and has from its body inner edge axial extension's spacing portion, spacing portion cartridge in the annular to establish radial positioning between them.
11. The friction disc of claim 10, wherein said tachometer gear has a bead formed extending axially from its body for pressing against an outer race of a bearing between said wheel and axle.
12. The friction disc of claim 11, wherein said friction disc is fixedly attached to said tachometer gear using a plurality of circumferentially spaced threaded fasteners.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023564.XA CN109733433B (en) | 2019-01-10 | 2019-01-10 | Low-floor vehicle, bogie and shaft end structure thereof |
| JP2021523004A JP7134347B2 (en) | 2019-01-10 | 2019-12-03 | Low-floor vehicle, bogie, its shaft end configuration, and friction disc |
| EP19908455.9A EP3909828A4 (en) | 2019-01-10 | 2019-12-03 | Low-floor vehicle, bogie and shaft end structure thereof, and friction disc |
| PCT/CN2019/122626 WO2020143363A1 (en) | 2019-01-10 | 2019-12-03 | Low-floor vehicle, bogie and shaft end structure thereof, and friction disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023564.XA CN109733433B (en) | 2019-01-10 | 2019-01-10 | Low-floor vehicle, bogie and shaft end structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109733433A CN109733433A (en) | 2019-05-10 |
| CN109733433B true CN109733433B (en) | 2020-06-30 |
Family
ID=66364315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910023564.XA Active CN109733433B (en) | 2019-01-10 | 2019-01-10 | Low-floor vehicle, bogie and shaft end structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109733433B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109703589B (en) * | 2019-01-16 | 2020-06-30 | 中车青岛四方机车车辆股份有限公司 | Low-floor vehicle, bogie and shaft end sealing structure thereof |
| WO2020143363A1 (en) * | 2019-01-10 | 2020-07-16 | 中车青岛四方机车车辆股份有限公司 | Low-floor vehicle, bogie and shaft end structure thereof, and friction disc |
| CN114179844A (en) * | 2021-12-03 | 2022-03-15 | 中车唐山机车车辆有限公司 | Bogie with speed measuring function and railway vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3371482B2 (en) * | 1992-09-30 | 2003-01-27 | 住友電気工業株式会社 | Wheel speed detecting gear and manufacturing method thereof |
| CN206313579U (en) * | 2016-12-29 | 2017-07-07 | 大连日牵电机有限公司 | A kind of articulated truck alternating current asynchronous traction motor |
| CN107200043A (en) * | 2017-05-16 | 2017-09-26 | 同济大学 | Rolling stock traffic direction recognizes the device and method measured with axle speed |
| CN108045391A (en) * | 2017-12-12 | 2018-05-18 | 中车长春轨道客车股份有限公司 | A kind of new speed per hour 250km/h EMU non-powered bogie assembly |
-
2019
- 2019-01-10 CN CN201910023564.XA patent/CN109733433B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109733433A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109733433B (en) | Low-floor vehicle, bogie and shaft end structure thereof | |
| US3892300A (en) | Motorized wheel brake system | |
| CN109703589B (en) | Low-floor vehicle, bogie and shaft end sealing structure thereof | |
| CN104401302B (en) | Automobile and its disk brake Automobile drive rear axle assy | |
| JPH01167901U (en) | ||
| US10589568B2 (en) | Wheel hub arrangement for a motor vehicle | |
| JP7134347B2 (en) | Low-floor vehicle, bogie, its shaft end configuration, and friction disc | |
| JP2002327769A (en) | Bearing device for driving wheel | |
| JP4158341B2 (en) | Bearing device | |
| US4932245A (en) | Magnetic ring mounting fixture | |
| CN210526276U (en) | Electric drive device | |
| CN210821667U (en) | Vehicle and axle | |
| CN210629243U (en) | Forklift traction motor | |
| CN211202874U (en) | Automobile semi-axle dustproof structure | |
| JP6237191B2 (en) | Hub unit | |
| CN114056373A (en) | End cover assembly and axle box device | |
| CN213954174U (en) | Magnetic encoder with sealing lip | |
| JP2604276Y2 (en) | Rolling bearing unit with rotation speed detection sensor | |
| CN107972409B (en) | Bearing pressing plate and drive axle | |
| CN213655486U (en) | Hub bearing unit of magnetic encoder with sealing lip | |
| CN211468064U (en) | Wheel hub sealing structure | |
| CN213676236U (en) | Hub unit with spline fit structure | |
| CN218839056U (en) | Non-drive hub unit with snap ring | |
| CN218542929U (en) | Hub bearing unit with built-in magnetic ring | |
| CN203906551U (en) | Automotive hub bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |