CN110939663B - Direct-drive transmission mechanism - Google Patents
Direct-drive transmission mechanism Download PDFInfo
- Publication number
- CN110939663B CN110939663B CN201811116825.4A CN201811116825A CN110939663B CN 110939663 B CN110939663 B CN 110939663B CN 201811116825 A CN201811116825 A CN 201811116825A CN 110939663 B CN110939663 B CN 110939663B
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- Prior art keywords
- transmission
- flexible plate
- holes
- disc
- wheel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/56—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic metal lamellae, elastic rods, or the like, e.g. arranged radially or parallel to the axis, the members being shear-loaded collectively by the total load
- F16D3/58—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic metal lamellae, elastic rods, or the like, e.g. arranged radially or parallel to the axis, the members being shear-loaded collectively by the total load the intermediate members being made of rubber or like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/44—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with hollow transmission shaft concentric with wheel axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
- B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
Abstract
A direct-drive transmission mechanism comprises a wheel pair, a driving motor and a flexible plate coupler. The flexplate shaft coupling includes the hollow shaft, pass the power dish, first flexplate, the transmission dish, second flexplate and driving pin, the hollow shaft has the axis body and connects in the first connecting portion of axis body first end and connect in the second connecting portion of axis body second end, the axis body is worn to locate by the axletree, the initiative wheel is close to the axis body second end, driven wheel is close to the first end of axis body, pass outside power dish and the first flexplate cover locate the axis body, and be close to first end, first flexplate is connected and is set up between power dish and first connecting portion, pass power dish and output fixed connection, transmission dish and second connecting portion fixed connection, second flexplate and transmission dish fixed connection, the second flexplate passes through the driving pin and is connected with the initiative wheel. The power of the driving motor is transmitted to the force transmission disc, the first flexible plate, the hollow shaft, the transmission disc, the second flexible plate, the transmission pin, the driving wheel and the driven wheel in sequence through the output end, and then the driving wheel is driven to rotate.
Description
Technical Field
The invention relates to a wheel pair driving system of a rail locomotive vehicle, in particular to a direct-drive transmission mechanism.
Background
The existing rail locomotive vehicle realizes transmission by adopting a gear box transmission mechanism, and mainly carries out direct drive transmission by adopting an asynchronous motor to drive the gear box mechanism.
However, the existing gearbox transmission mechanism has the problems of complex structure, large volume, large noise, large transmission loss, gear oil pollution, complex lubricating and sealing design, high maintenance cost and the like, and the technical problems of poor displacement capability (like an axle is also a direct-drive transmission mechanism of a motor shaft or even no displacement capability), short maintenance-free period, large motor impact vibration and the like of the existing direct-drive wheel set transmission mechanism.
Therefore, how to solve one of the problems of the prior art is really an urgent problem to be solved in the field.
Disclosure of Invention
Based on the problems, the invention provides the direct-drive transmission mechanism of the motor of the rail locomotive, which has the advantages of simple structure, good manufacturability, strong displacement capability and low cost.
To achieve the above object, the present invention provides a direct drive transmission mechanism, which includes a wheel set, a driving motor and a flexible plate coupling.
The wheel pair comprises a driving wheel, a driven wheel and an axle connected between the driving wheel and the driven wheel. The drive motor has an output. The flexplate shaft coupling includes the hollow shaft, pass the power dish, first flexplate, the transmission dish, second flexplate and driving pin, the hollow shaft has the axis body and connects in the first connecting portion of axis body first end and connect in the second connecting portion of axis body second end, the axis body is worn to locate by the axletree, the initiative wheel is close to the axis body second end, driven wheel is close to the first end of axis body, pass outside power dish and the first flexplate cover locate the axis body, and be close to first end, first flexplate is connected and is set up between power dish and first connecting portion, pass power dish and output fixed connection, transmission dish and second connecting portion fixed connection, second flexplate and transmission dish fixed connection, the second flexplate passes through the driving pin and is connected with the initiative wheel.
The power of the driving motor is transmitted to the force transmission disc, the first flexible plate, the hollow shaft, the transmission disc, the second flexible plate, the transmission pin, the driving wheel and the driven wheel in sequence through the output end, and then the driving wheel is driven to rotate.
Compared with the prior art, the invention has the beneficial effects that: the invention discloses a flexible plate coupling which is creatively provided with a direct-drive transmission mechanism, wherein the flexible plate coupling has large elastic deflection capacity and no abrasion characteristic, so that the transmission mechanism can adapt to the requirements of all directions of displacement between a driving motor and a wheel pair under dynamic and static working conditions, and is free of lubrication and maintenance due to no abrasion. In addition, each part has a simple design structure, so that the processing and dismounting manufacturability are good.
Drawings
FIG. 1 is a schematic structural view of a direct drive transmission mechanism according to an embodiment of the present invention;
FIG. 2 is an assembly schematic of the force transfer plate, the first flexplate and the hollow shaft of the direct drive transmission according to one embodiment of the present invention;
fig. 3 is a schematic assembled perspective view of the force transmission disc, the first flexible plate and the hollow shaft of the direct drive transmission mechanism according to the embodiment of the invention;
FIG. 4 is a schematic perspective view of an assembly of a force transfer plate and a first flexible plate of a direct drive transmission according to an embodiment of the present invention;
FIG. 5 is an assembly view of the drive plate, the second flexible plate and the drive pin of the direct drive transmission mechanism according to the embodiment of the invention;
fig. 6a and 6b are schematic perspective views of an assembly structure of a transmission disc, a second flexible plate and a transmission pin of the direct drive transmission mechanism according to an embodiment of the invention;
FIG. 7 is a schematic perspective view of a force transfer plate of a direct drive transmission according to an embodiment of the present invention;
FIG. 8 is a schematic perspective view of a first (second) flexplate of a direct drive transmission according to an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a hollow shaft of a direct drive transmission according to an embodiment of the present invention;
FIG. 10 is a schematic perspective view of a drive plate of a direct drive transmission according to an embodiment of the present invention;
FIG. 11 is a schematic perspective view of a drive pin of a direct drive transmission according to an embodiment of the present invention;
fig. 12a and 12b are schematic perspective views of a first connecting assembly of a direct drive transmission mechanism according to an embodiment of the invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
The invention discloses a direct-drive transmission mechanism, which comprises a wheel pair 10, a driving motor 20 and a flexible plate coupler as shown in figure 1.
The wheel set 10 includes a driving wheel 11, a driven wheel 12, and an axle 13 connected between the driving wheel 11 and the driven wheel 12. The drive motor 20 has an output. The flexible plate coupling comprises a hollow shaft 31, a force transmission disc 32, a first flexible plate 33, a transmission disc 34, a second flexible plate 35 and a transmission pin 36, wherein the hollow shaft 31 is provided with a shaft body 311, a first connecting part 312 connected to the first end of the shaft body and a second connecting part 313 connected to the second end of the shaft body, the axle 13 penetrates through the shaft body 311, the driving wheel 11 is close to the second end of the shaft body, the driven wheel 12 is close to the first end of the shaft body, the force transmission disc 32 and the first flexible plate 33 are sleeved outside the shaft body 311 and close to the first end, the first flexible plate 33 is connected and arranged between the force transmission disc 32 and the first connecting part 312, the force transmission disc 32 is fixedly connected with the output end, the transmission disc 34 is fixedly connected with the second connecting part 313, the second flexible plate 35 is fixedly connected with the transmission disc 34, and the second flexible plate 35 is.
The power of the driving motor 20 is transmitted to the force transmission disc 32, the first flexible plate 33, the hollow shaft 31, the transmission disc 34, the second flexible plate 35, the transmission pin 36, the driving wheel 11 and the driven wheel 12 in sequence through the output end, and then the wheel pair 10 is driven to rotate.
The direct-drive transmission mechanism creatively provides a flexible plate coupling, replaces the traditional asynchronous motor transmission gear box mechanism, forms a direct-drive transmission mode, and has great difference with the known direct-drive transmission in the aspects of structure, effect and the like. The flexible plate coupling has the characteristics of large elastic deformation, no abrasion and no maintenance. The flexible plate coupling can adapt to the requirements of the wheel pair on the displacement in all directions relative to the driving motor under dynamic and static working conditions.
Therefore, the direct-drive transmission mechanism of the flexible plate coupling has the technical characteristics of simple structure, good manufacturability, strong displacement capability, no abrasion, no maintenance, low cost and the like, and well solves the technical problems of poor displacement capability, short maintenance-free period and the like of the traditional gearbox transmission and the existing direct-drive wheel pair.
In this embodiment, as shown in fig. 1, the driving motor 20 is a permanent magnet synchronous traction direct drive motor, the rotor shaft 21 of the driving motor 20 is a hollow shaft, the hollow shaft 31 penetrates through the rotor shaft 21, and the rotor shaft 21, the hollow shaft 31 and the axle 13 are coaxially arranged. The transmission mechanism of the embodiment is a double hollow shaft structure of 'a motor hollow shaft + a coupling hollow shaft', the hollow shaft 31 is radially arranged between the rotor shaft 21 and the axle 13, and both the rotor shaft 21 and the axle 13 are designed to reserve movement gaps, so that the transmission mechanism can be more suitable for the requirements of the wheel set 10 on the displacement of the driving motor 20 under dynamic and static working conditions.
In this embodiment, as shown in fig. 1, 3, 4 and 9, the end face of the output end includes face teeth, the force transfer disc 32 is annular, and one surface of the force transfer disc has face teeth 321, and the face teeth of the force transfer disc 32 are engaged with the face teeth of the output end.
The force transmission disc 32 comprises a first flange 322, the first flange 322 is located on the periphery of a face tooth 321 of the force transmission disc 32, a plurality of first through holes H1 are formed in the first flange 322, a plurality of second through holes H2 are formed in the first flexible plate 33, the flexible plate coupling further comprises a first connecting assembly 41, and the first connecting assembly 41 penetrates through the first through holes H1 and the second through holes H2, so that the force transmission disc 32 is connected with the first flexible plate 33.
As shown in fig. 9, the first connection portion 312 includes a second flange 3121, a plurality of third through holes H3 are formed in the second flange 3121, a plurality of fourth through holes H4 are formed in the first flexible board 33, and the flexible board coupling further includes a second connection assembly 42, and the second connection assembly 42 passes through the third through hole H3 and the fourth through hole H4, so that the first connection portion 312 is connected to the first flexible board 33.
As shown in fig. 8, the first flexible plate 33 includes two opposite identical semicircular rings, each of which has a plurality of through holes for mounting a connecting assembly, such as the fourth through hole H4 described above, for mounting the second connecting assembly 42. The semicircular ring is composed of multiple layers of stainless steel annular sheets and is provided with a flexible plate connecting component mounting hole.
The flexible plate has large elastic deformation characteristic, so the flexible plate coupling has elastic deflection capacity and can adapt to the requirements of all directions of displacement between the driving motor 20 and the wheel pair 10 under dynamic and static working conditions.
The second connecting assembly 42 has the same structure as the first connecting assembly 41, and only a schematic perspective structure of the first connecting assembly 41 is shown in fig. 12a and 12 b. As shown in fig. 12a and 12b, the first connecting assembly 41 includes a combining portion 411, a tightening portion 412 and a pressing piece 413, the combining portion 411 is, for example, a pair of clamping plates, and the tightening portion 412 can pass through a through hole on the combining portion 411 and be tightened, so as to achieve fastening between the connected components.
The end face teeth of the force transmission disc 32 are provided with a through fifth through hole H5, and a bolt penetrates through the fifth through hole H5 and the end face teeth of the output end, so that the force transmission disc 32 is connected with the output end bolt.
As shown in fig. 9 and 10, the second connecting portion 313 includes a face tooth 3131, the driving plate 34 has a ring shape, and one surface thereof has a face tooth 341, and the face tooth 341 of the driving plate 34 is engaged with the face tooth 3131 of the second connecting portion 313.
In this embodiment, the transmission process of the direct drive transmission mechanism is as follows:
the rotor shaft 21 of the driving motor 20 transmits power to the force transmission disc 32 of the flexible plate coupler through a 'end face tooth + bolt' connection structure, the force transmission disc 32 transmits power to the hollow shaft 31 through the first flexible plate 33, the hollow shaft 31 transmits power to the transmission disc 34 through the 'end face tooth + bolt' connection structure, the transmission disc 34 transmits power to the transmission pin 36 through the second flexible plate 35, and the transmission pin 36 is in interference fit with the driving wheel 11 to further drive the wheel pair 10 to rotate.
In this embodiment, as shown in fig. 10, the transmission disc 34 includes a third flange 342, the third flange 342 is located on the outer periphery of the end face teeth 341 of the transmission disc 34, and the third flange 342 is provided with a plurality of sixth through holes H6.
The second flexible board 35 has the same structure as the first flexible board 33, so the structure of the second flexible board 35 can be seen in fig. 8. The second flexplate 35 is provided with a plurality of seventh through holes H7, and the flexplate coupling further includes a third connecting assembly 43, the third connecting assembly 43 passing through the sixth through hole H6 and the seventh through hole H7 so that the driving disc 34 is connected to the second flexplate 35. The third connecting member 43 has the same structure as the first connecting member 41.
Wherein, the end face teeth of the driving disc 34 are provided with through eighth through holes H8, and bolts pass through the eighth through holes H8 and the end face teeth 3131 of the second connecting portion 313, so that the driving disc 34 is bolted to the second connecting portion 313.
As shown in fig. 7 and 10, the drive plate 34 and the force transfer plate 32 are similarly configured, each being a petal-type annular flange with a circular through-hole in each petal for receiving a flexplate coupling assembly.
In this embodiment, as shown in fig. 1 and 11, the transmission pin 36 includes a first connection end 361, a second connection end 362, and a convex ring 363 connected between the first connection end 361 and the second connection end 362, the second flexible board 35 is provided with a plurality of ninth through holes H9, the first connection end 361 passes through the ninth through hole H9 and is connected to the second flexible board 35 by a bolt, the second connection end 362 is in interference fit with the driving wheel 11 and is connected to the driving wheel 11 by a "pressing piece + bolt", and the convex ring 363 is clamped between the driving wheel 11 and the second flexible board 35.
Compared with the direct drive wheels in the prior patents of 'direct drive system of wheel set motor of railway vehicle' and 'direct drive wheel set drive system and bogie applying the system', the embodiment has the following differences technically and structurally:
the flexible plate coupling has large elastic deflection capacity and no abrasion characteristic, so the transmission mechanism not only can adapt to the requirements of the drive motor on all directions of displacement under dynamic and static working conditions relative to the wheel pair, but also does not need lubrication because of no abrasion and is free of maintenance;
and a driving wheel → axle → driven wheel transmission mode is adopted instead of an axle → two-side wheel transmission mode or a two-side wheel transmission mode.
The main body of the transmission mechanism is a double hollow shaft structure of 'a motor hollow shaft + a coupling hollow shaft', not a single hollow shaft structure of 'a motor hollow shaft', not an axle and not a transmission mechanism of a motor shaft.
The motor can realize elastic suspension to alleviate wheel rail impact vibration.
The deformation mechanism is a flexible plate consisting of multiple layers of stainless steel sheets, rather than a rubber knuckle.
The flexible plate is composed of two semicircular rings instead of a whole ring, if the flexible plate (semicircular ring) is damaged, the semicircular ring structure can realize the replacement of the flexible plate (semicircular ring) under the condition of not disassembling the wheel pair, and the flexible plate has more excellent overhauling and maintenance performance.
Each spare part design simple structure, the installation node is few to adopt the solid mode of connecing of "end face tooth + bolt", make processing and dismouting manufacturability good.
In conclusion, the direct-drive transmission mechanism creatively provides the flexible plate coupling which has large elastic deflection capacity and no abrasion, so that the transmission mechanism can adapt to the requirements of all directions of displacement between the driving motor and the wheel pair under dynamic and static working conditions, and is free of lubrication and maintenance due to no abrasion. In addition, each part design simple structure to adopt the solid mode of linking firmly of "end face tooth + bolt", make processing and dismouting manufacturability good.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A direct drive transmission comprising:
the wheel pair comprises a driving wheel, a driven wheel and an axle connected between the driving wheel and the driven wheel;
a drive motor having an output; and
the flexible plate coupling comprises a hollow shaft, a force transmission disc, a first flexible plate, a transmission disc, a second flexible plate and a transmission pin, wherein the hollow shaft is provided with a shaft body, a first connecting part connected to the first end of the shaft body and a second connecting part connected to the second end of the shaft body;
the power of the driving motor is transmitted to the force transmission disc, the first flexible plate, the hollow shaft, the transmission disc, the second flexible plate, the transmission pin, the driving wheel and the driven wheel in sequence through the output end, and then the driving wheel is driven to rotate.
2. A direct drive transmission as set forth in claim 1 wherein the end face of the output end includes face teeth and the force transfer disc is annular with a face tooth on one surface thereof, the face tooth of the force transfer disc engaging the face tooth of the output end.
3. A direct drive transmission as set forth in claim 2 wherein the force transfer disc includes a first flange disposed about the periphery of the end face teeth of the force transfer disc, the first flange having a plurality of first through holes formed therein, the first flexible plate having a plurality of second through holes formed therein, the flexible plate coupling further including a first coupling assembly passing through the first and second through holes such that the force transfer disc is coupled to the first flexible plate.
4. A direct drive transmission as set forth in claim 3 wherein the first coupling portion comprises a second flange having a plurality of third through holes formed therein, the first flexplate having a plurality of fourth through holes formed therein, the flexplate coupling further comprising a second coupling assembly passing through the third and fourth through holes such that the first coupling portion is coupled to the first flexplate.
5. A direct drive transmission as set forth in claim 4 wherein the force transfer disc has a fifth through hole in its face teeth and a bolt passes through the fifth through hole and the face teeth of the output end to bolt the force transfer disc to the output end.
6. A direct drive transmission as set forth in claim 4 wherein the second coupling portion includes face teeth and the drive plate is annular with a face tooth on one surface thereof, the face tooth of the drive plate meshing with the face tooth of the second coupling portion.
7. The direct drive transmission mechanism according to claim 6, wherein the transmission disc comprises a third flange, the third flange is positioned at the periphery of the end face teeth of the transmission disc, a plurality of sixth through holes are formed in the third flange, a plurality of seventh through holes are formed in the second flexible plate, and the flexible plate coupling further comprises a third connecting assembly, and the third connecting assembly penetrates through the sixth through holes and the seventh through holes so that the transmission disc is connected with the second flexible plate.
8. A direct drive transmission as set forth in claim 7 wherein the end face teeth of the drive plate are provided with eighth through holes therethrough, and bolts pass through the eighth through holes and the end face teeth of the second connecting portion to bolt the drive plate to the second connecting portion.
9. The direct drive transmission mechanism according to claim 8, wherein the transmission pin comprises a first connection end, a second connection end and a convex ring connected between the first connection end and the second connection end, the second flexible plate is provided with a plurality of ninth through holes, the first connection end passes through the ninth through holes and is in bolted connection with the second flexible plate, the second connection end is in interference fit with the driving wheel, and the convex ring is clamped between the driving wheel and the second flexible plate.
10. The direct drive transmission mechanism according to claim 1, wherein the drive motor is a permanent magnet synchronous traction direct drive motor, a rotor shaft of the drive motor is a hollow shaft, the hollow shaft penetrates through the rotor shaft, and the rotor shaft, the hollow shaft and the axle are coaxially arranged.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811116825.4A CN110939663B (en) | 2018-09-25 | 2018-09-25 | Direct-drive transmission mechanism |
| UAA202003626A UA125668C2 (en) | 2018-09-25 | 2018-12-19 | Direct-drive transmission mechanism |
| PCT/CN2018/122084 WO2020062628A1 (en) | 2018-09-25 | 2018-12-19 | Direct-drive transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811116825.4A CN110939663B (en) | 2018-09-25 | 2018-09-25 | Direct-drive transmission mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110939663A CN110939663A (en) | 2020-03-31 |
| CN110939663B true CN110939663B (en) | 2021-03-16 |
Family
ID=69905104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811116825.4A Active CN110939663B (en) | 2018-09-25 | 2018-09-25 | Direct-drive transmission mechanism |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110939663B (en) |
| UA (1) | UA125668C2 (en) |
| WO (1) | WO2020062628A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112026439B (en) * | 2020-09-14 | 2022-03-11 | 中车大连机车车辆有限公司 | Dismounting device of locomotive wheel drive pin |
| CN112078601B (en) * | 2020-09-25 | 2022-04-19 | 中车大同电力机车有限公司 | Wheel pair driving system and rail vehicle |
| CN112865410B (en) * | 2021-01-12 | 2021-11-23 | 大庆油田有限责任公司 | Permanent magnet semi-direct-drive synchronous dragging device for pumping unit |
| CN112865409B (en) * | 2021-01-12 | 2021-11-30 | 大庆油田有限责任公司 | Permanent-magnet semi-direct-drive synchronous dragging device of direct-drive pumping unit |
| CN113738774A (en) * | 2021-09-10 | 2021-12-03 | 中车大同电力机车有限公司 | Transmission hollow shaft, bogie coupling and manufacturing method of transmission hollow shaft |
| CN114572266B (en) * | 2021-10-31 | 2023-07-18 | 中车南京浦镇车辆有限公司 | Frame-suspended permanent magnet direct-drive bogie |
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- 2018-09-25 CN CN201811116825.4A patent/CN110939663B/en active Active
- 2018-12-19 WO PCT/CN2018/122084 patent/WO2020062628A1/en active Application Filing
- 2018-12-19 UA UAA202003626A patent/UA125668C2/en unknown
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| CN105197021A (en) * | 2015-09-22 | 2015-12-30 | 南车南京浦镇车辆有限公司 | Motor hold shaft installation type permanent-magnetic direct-drive bogie |
| CN206406913U (en) * | 2016-12-26 | 2017-08-15 | 重庆凯瑞车辆传动制造有限公司 | Rail vehicle gear drive |
| CN206592448U (en) * | 2017-03-06 | 2017-10-27 | 中车株洲电力机车有限公司 | A kind of driving structure and vehicle output shaft coupling of low floor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| UA125668C2 (en) | 2022-05-11 |
| WO2020062628A1 (en) | 2020-04-02 |
| CN110939663A (en) | 2020-03-31 |
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