CN113489236A - Axle end power generation facility, bogie and railway vehicle - Google Patents
Axle end power generation facility, bogie and railway vehicle Download PDFInfo
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- CN113489236A CN113489236A CN202110870967.5A CN202110870967A CN113489236A CN 113489236 A CN113489236 A CN 113489236A CN 202110870967 A CN202110870967 A CN 202110870967A CN 113489236 A CN113489236 A CN 113489236A
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- 238000010248 power generation Methods 0.000 title claims abstract description 93
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- 125000004122 cyclic group Chemical group 0.000 claims description 4
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- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 238000009413 insulation Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
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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
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1846—Rotary generators structurally associated with wheels or associated parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
- B61F5/52—Bogie frames
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a shaft end power generation device, a bogie and a railway vehicle, wherein the shaft end power generation device is arranged at the end part of a wheel shaft formed by wheel pairs and comprises a generator and a coupler, and the generator is provided with an inner rotor; the coupler is arranged at the end part of the wheel pair assembly and is connected with the wheel pair assembly and an inner rotor of the generator so as to transmit torque formed by the wheel pair assembly; the coupler is movably connected with an inner rotor of the generator through a clamping step structure, the clamping step structure comprises a clamping step shaft and a clamping groove which are matched, the clamping groove is sleeved on the clamping step shaft, and the clamping groove and the clamping step shaft are in clearance fit in the axial direction and the radial direction. Compared with the direct connection of the inner rotor of the motor and the shaft end in the prior art, the shaft end power generation device has the advantages that the generator and the wheel shaft are buffered, meanwhile, the generator and the coupler are in open clearance fit, and the axial displacement and the radial displacement of the shaft end are eliminated by the fit clearance, so that the generator can be effectively protected, and the performance and the reliability of the generator are ensured.
Description
Technical Field
The invention relates to the field of power generation devices, in particular to a shaft end power generation device, a bogie and a railway vehicle.
Background
With the increase of vehicle load and speed, railway transportation safety is increasingly severe, more and more electrical equipment such as an axle temperature sensor, an electronic antiskid device, an acceleration sensor, a weight measuring instrument and the like are widely applied to railway freight car vehicles to realize dynamic online monitoring of the vehicles, but because the railway freight car in China adopts three large bogies and is limited by the space of the bogies, the conventional radial magnetic circuit generator structure is difficult to realize.
The railway wagon power generation scheme applied in the prior art has various power generation modes such as storage batteries, shaft end belt pulley transmission power generation, solar power generation and the like. The storage battery mode cannot realize self-power generation, so that the batteries need to be replaced, and the use is inconvenient; the shaft end belt pulley drives the electricity generation way, its transmission efficiency is low; the solar power generation is influenced by weather, and the above power generation modes are all insufficient. Compared with the power generation mode, the shaft end power generation device has the characteristics of simple structure, good adaptability, no change of the existing bogie structure and the like, is low in cost, and has popularization and application values.
The shaft end power generation is a generator installed at the end part of a wheel shaft, and on the premise of not changing the overall structure of the existing bogie, an inner rotor of the generator is installed at the shaft end through changing a bearing saddle or a bearing end cover structure, and a stator is installed at the bearing saddle or a shaft box. When the bogie carries a vehicle to run along a track, the wheel rotates to drive an inner rotor of the generator to rotate so as to generate electricity. Axle head power generation facility among the prior art needs to change and bears saddle structure and bearing end structure, has the electricity generation unstability simultaneously, and the generator needs to be dismantled to the time of dismantling the bogie wheel to the problem that the electricity generation reliability is low, whole inconvenient installation dismantlement and the technical problem that can't guarantee driving safety.
Disclosure of Invention
In order to solve the technical problems and achieve the purpose of the invention, the invention provides a shaft end power generation device which is arranged at the end part of a wheel shaft formed by wheel pairs and comprises a generator and a coupler, wherein the generator is provided with an inner rotor; the coupler is arranged at the end part of the wheel pair assembly and is connected with the wheel pair assembly and an inner rotor of the generator so as to transmit the torque of the wheel pair assembly; the shaft coupling with the inner rotor of generator passes through card rank structure swing joint, the card rank structure is including matching card rank axle and draw-in groove, the draw-in groove suit in card rank epaxial, just the draw-in groove with card rank axle is in axial and radial clearance fit.
Further, the shaft end power generation device also comprises a motor support; the motor support is arranged between the generator and the wheel shaft, and the generator is arranged at the end part of the wheel shaft through the motor support.
Furthermore, the motor support comprises an extension part and a motor mounting part for mounting the generator, one end of the extension part is used for arranging the motor support at the end part of a wheel shaft formed by the wheel pair, and the other end of the extension part is fixedly connected with the motor mounting part; the motor installation department is cyclic annular planar structure, be provided with on the cyclic annular plane of motor installation department and be used for the installation the mounting hole of generator, the inner rotor of generator has the rotor shaft, the rotor shaft passes the mounting hole with the coupling joint.
Further, the inner surface and/or the outer surface of the extension part is/are provided with reinforcing ribs; and reinforcing ribs are arranged on the connection transition area of the extension part and the motor installation part.
Further, the shaft end power generation device further comprises a heat insulation cushion pad, and the motor support and the heat insulation cushion pad are arranged at the end part of the wheel shaft through threaded fasteners.
Further, the coupling includes a base; the base is provided with a counter bore groove, the counter bore groove forms the clamping groove, an inner rotor of the generator is provided with a rotor shaft, a clamping step is arranged at the end part of the rotor shaft, so that the rotor shaft forms the clamping step shaft, and the base is connected with the inner rotor of the generator and transmits torque formed by wheel pairs.
Further, the coupling comprises a base and a connecting body; the base is provided with an opening with a bayonet corresponding to the connecting body, and the base is connected with the connecting body and transmits torque formed by wheel pairs; the connecting body comprises a tail part and a clamping part with a groove-shaped opening, and the connecting body is detachably arranged in the open hole of the base through the tail part; the clamping part constitutes the draw-in groove, the inner rotor of generator has the rotor shaft, the tip of rotor shaft is provided with the card rank to make the rotor shaft constitutes the card rank axle, the clamping part with the inner rotor of generator is connected and is transmitted the moment of torsion of wheel pair constitution.
Further, the coupling comprises a base and a connecting body; the base comprises a connecting plate and a mounting seat with a bayonet, and the mounting seat protrudes out of the surface of the connecting plate; the connecting body comprises a tail part and a clamping part with a groove-shaped opening, and is detachably arranged in a bayonet of the mounting seat through the tail part and detachably and axially fixedly connected with the connecting plate; the clamping part of the connecting body forms the clamping groove, an inner rotor of the generator is provided with a rotor shaft, a clamping step is arranged at the end part of the rotor shaft, so that the rotor shaft forms the clamping step shaft, and the clamping part is connected with the inner rotor of the generator and transmits torque formed by wheel pairs.
Furthermore, the connector still includes circlip, the afterbody of connector is the cylindrical afterbody of taking the snap ring structure, circlip with snap ring structure on the cylindrical afterbody cooperatees, the cylindrical afterbody embedding of connector the base, and through circlip realize with the axial positioning of base.
Further, the generator includes motor and speed increasing mechanism, speed increasing mechanism with the motor is integrated as an organic whole, speed increasing mechanism's input shaft with the shaft coupling passes through card rank structure swing joint, and at the equal clearance fit of axial, radial to transmit the moment of torsion that the wheel pair is constituteed to the inner rotor of generator.
Furthermore, the shaft end power generation device further comprises a shaft sleeve and an elastic pin, the shaft sleeve is of a clamping step structure and is sleeved on the input shaft, a radial hole for the elastic pin to penetrate through is formed in the input shaft, and the shaft sleeve is fixed on the input shaft of the speed increasing mechanism through the elastic pin.
Furthermore, the shaft end power generation device also comprises a protective cover sleeved on the generator.
Based on the same inventive concept, the invention also provides a bogie, which comprises the shaft end power generation device; the bogie further comprises a bearing saddle, a bearing and a bearing end cover, the bearing saddle is connected with a side frame of the bogie, the bearing saddle is mounted at the end part of the wheel shaft through the bearing and is positioned on the outer side of the wheel, and the shaft end power generation device is mounted on the bearing saddle; the bearing end cover is buckled on the bearing and connected with the wheel shaft; the shaft coupling is installed on the bearing end cover.
Furthermore, the shaft end power generation device further comprises a locking gasket, wherein the locking gasket is arranged between the bearing end cover and the coupler and arranged at the end part of the coupler.
Based on the same inventive concept, the invention also provides a railway vehicle comprising the bogie.
According to the technical scheme, the shaft end power generation device is arranged at the end part of a wheel shaft formed by wheel pairs and comprises a power generator and a coupler, wherein the power generator is provided with an inner rotor, the inner rotor is arranged in the power generator, and a stator and a rotor form a disc structure of an axial magnetic circuit, so that the axial and radial sizes of the power generator can be effectively reduced. According to the shaft end power generation device provided by the invention, because the generator and the shaft end are in open clearance fit, in the running process of a vehicle, vibration caused by the irregularity of a track, the passing curve of the vehicle and the generation of axial and radial displacement of a wheel pair assembly relative to the generator caused by the braking of the vehicle are generated, and if the displacement is directly transmitted to the generator through a rigid connection structure, the working performance of the generator is adversely affected. Simultaneously, compare with the scheme of motor inner rotor and wheel lug connection among the prior art, transmit the moment of torsion of wheel for generator inner rotor through the shaft coupling, there is the buffering generator with the shaft, can improve the reliability and the life of generator.
The invention provides a bogie which comprises a bearing saddle, a bearing end cover and the shaft end power generation device, wherein the bearing saddle is connected with a side frame of the bogie, and is arranged at the end part of a wheel shaft through the bearing and positioned at the outer side of a wheel; the shaft end power generation device is arranged on the bearing saddle and is arranged at the end part of the wheel shaft; the bearing end cover is covered on the bearing and connected with the wheel shaft to transmit the torque formed by the wheel pair and realize the sealing effect; the shaft coupling is installed on the bearing end cover and transmits the torque formed by the wheel pair to an inner rotor of the generator. When the shaft end power generation device provided by the invention is applied to the existing bogie, the device can be completely suitable for the general main three-piece bogie and the component bogie of the railway wagon in China, and the structure of the bogie is not changed. The generator adopts clearance fit with the shaft coupling, the generator does not receive bogie wheel axle axial and radial displacement's influence, the weight of generator is transmitted for the bogie by bearing the saddle, the inner rotor of generator does not bear the weight of generator, improve the generator reliability, simultaneously because the generator passes through to bear the saddle to install on the bogie, and the not lug connection of shaft and generator inner rotor, through the inner rotor clearance fit of shaft coupling and generator, make and can directly move back and unload the wheel pair and need not to dismantle the generator when dismantling bogie wheel pair, better keep the maintenance characteristic of bogie.
When the bogie with the shaft end power generation device provided by the invention is applied to the existing railway vehicle, the shaft end power generation device generates power stably and reliably, the power supply problem of a railway wagon can be solved, and the equipment maintenance cost is low.
Drawings
Fig. 1 is a schematic structural view of a shaft end power generation device provided in embodiment 1;
FIG. 2 is a first schematic structural diagram of a motor support in the shaft end power generation device of FIG. 1;
FIG. 3 is a second schematic structural view of a motor support in the shaft end power generation device of FIG. 1;
FIG. 4 is a schematic structural diagram of a coupling in the shaft end power generation device of FIG. 1;
FIG. 5 is a schematic structural diagram of a generator in the shaft end power generation device of FIG. 1;
FIG. 6 is a schematic diagram of the internal structure of the generator of FIG. 5;
FIG. 7 is a schematic view of the mounting surfaces of a bearing adapter and a motor mount in the bogie provided in embodiment 2;
fig. 8 is a schematic view of a bearing cap in a bogie provided in embodiment 2.
Description of the drawings: 1-a bearing saddle; 2-heat insulation buffer cushion; 3-a motor support; 301-an extension; 302-a motor mount; 303-radial reinforcing ribs; 304-circumferential reinforcing ribs; 305-a boss; 4-a generator; 5, a motor; 501-rotor shaft; 502-an inner rotor; 503-stator permanent magnet; 504-motor end cap; 506-a motor housing; 507-motor bearings; 6-a speed increasing mechanism; 7-a coupler; 701-connecting plate; 702-a mount; 703-a linker; 704-fixing iron wires; 705-anti-loose pad; 8-shaft sleeve; 9-a resilient pin; 10-bearing end cap, 11-end cap bolt; 12-a protective cover; 13-insulating and heat-insulating mat.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In order to solve the technical problems that in the prior art, during the running process of a vehicle, axial and radial displacements of a wheel pair assembly relative to a generator are caused by the fact that tracks are not smooth, curves pass through and vibration is generated during braking, and the performance and reliability of the generator are affected, the invention provides an axial end power generation device, which is basically designed as follows:
a shaft end power generation device is arranged at the end part of a wheel shaft formed by wheel pairs and comprises a generator and a coupler, wherein the generator is provided with an inner rotor; the coupling is used for transmitting the torque formed by the wheel pair; the coupler is movably connected with an inner rotor of the generator through a clamping step structure, the clamping step structure comprises a clamping step shaft and a clamping groove which are matched, the clamping groove is sleeved on the clamping step shaft, and the clamping groove and the clamping step shaft are in clearance fit in the axial direction and the radial direction.
This application is through setting up coupling joint wheel and generator to adopt axial and radial clearance fit between shaft coupling and the generator, this kind of unfavorable displacement can be eliminated to the produced fit clearance of clearance fit, thereby effectively protects the generator, guarantees the performance and the reliability of generator. Simultaneously, compare with the scheme of motor inner rotor and wheel lug connection among the prior art, transmit the moment of torsion of wheel for generator inner rotor through the shaft coupling, there is the buffering generator with the shaft, can improve the reliability and the life of generator. Therefore, the invention solves the problems of unstable power generation performance and low reliability of the generator in the prior art.
The technical scheme of the invention is described in detail by the following specific embodiments:
example 1
The embodiment of the invention provides an axle end power generation device, which is applied to a bogie and arranged at the end part of an axle consisting of wheel pairs, and realizes power generation by utilizing the rotation of the axle consisting of the wheel pairs of the bogie. The shaft end power generation device comprises a generator 4 and a coupler 7, wherein the generator 4 is provided with an inner rotor 502, and the axial size and the radial size of the motor can be effectively reduced by arranging the inner rotor 502 and forming a disc structure of an axial magnetic circuit by a stator and a rotor; the shaft coupling 7 is arranged at the end part of the wheel set assembly or the wheel shaft and is connected with the wheel set assembly and an inner rotor 502 of the generator 4 and used for transmitting the torque of the wheel set assembly; the shaft coupler 7 is movably connected with the inner rotor 502 of the generator 4 through a clamping step structure, the clamping step structure comprises a clamping step shaft and a clamping groove which are matched, the clamping step shaft sleeve 8 is arranged in the clamping groove, and the clamping groove and the clamping step shaft are in clearance fit in the axial direction and the radial direction. Meanwhile, compared with the scheme that the inner rotor 502 of the motor is directly connected with the wheel shaft in the prior art, the torque of the wheel is transmitted to the inner rotor 502 of the generator 4 through the coupler 7, the generator 4 has buffering with the wheel shaft, and the reliability and the service life of the generator 4 can be improved.
In order to fix the shaft end power generation device on the end face of the wheel shaft, the shaft end power generation device provided by the embodiment further comprises a motor support 3, and in the embodiment, a generator 4 is arranged at the end part of the wheel shaft formed by the wheel pair through a bearing saddle 1 in a bogie assembly; the motor support 3 is arranged between the generator 4 and the wheel shaft, and the generator 4 is arranged on the bearing saddle 1 through the motor support 3 and is in clearance fit with the coupler 7. The inner rotor 502 has a rotor shaft 501, the suspended mass of the motor is carried by the housing of the generator 4, and the weight does not need to be carried by the rotor shaft 501 of the generator 4, so that the power generation reliability is improved, as shown in fig. 1.
In order to increase the distance between the generator 4 and the shaft end so as to install the shaft coupler 7 and connect the wheel shaft and the rotor 502 in the generator 4 through the shaft coupler 7, in this embodiment, the motor support 3 includes an extension part 301 and a motor mounting part 302 for mounting the generator 4, one end of the extension part 301 is used for arranging the motor support 3 at the end part of the wheel shaft formed by the wheel pair, and the other end is fixedly connected with the motor mounting part 302; one end of the extension part 301 is provided with a support mounting surface used for being connected with the bearing saddle 1, and the other end is fixedly connected with the motor mounting part 302; the motor support 3 is detachably arranged on the end face of the wheel shaft through a support mounting surface. The support mounting surface is of a plane structure, and mounting holes are correspondingly formed in the support mounting surface and the bearing saddle 1; the motor mounting portion 302 is an annular plane structure, a mounting hole for mounting the generator 4 is formed in the annular plane of the motor mounting portion 302, an inner rotor 502 of the generator 4 is provided with a rotor shaft 501, and the rotor shaft 501 penetrates through the mounting hole to be connected with the coupling 7, as shown in fig. 2 and 3.
As shown in fig. 2 and 3, the inner surface and/or the outer surface of the extension 301 of the motor support 3 of the shaft end power generation device provided by the invention is/are provided with reinforcing ribs; and reinforcing ribs are arranged on the connection transition region of the extension part 301 and the motor mounting part 302. In this embodiment, in order to ensure the connection strength of the motor mount 3, 6 and 4 reinforcing ribs extending in the radial direction are respectively provided on the inner surface and the outer surface of the extension portion 301; reinforcing ribs extending along the circumferential direction are arranged on the connection transition area of the extension part 301 and the motor mounting part 302 so as to enhance the connection strength of the extension part 301 and the motor mounting part 302. Six motor mounting holes have been seted up concentrically to motor mounting portion 302's circumference, because the space between radial strengthening rib 303 is less, inconvenient punching and need bolt and nut fixed, the installation degree of difficulty is big, for convenient punching, this embodiment is provided with protruding seat 305 between the radial strengthening rib 303 of extension 301 to set up the screw thread counter bore on protruding seat 305, compare with original structure, increased the degree of depth of screw hole, the nut of being convenient for is fixed.
In order to reduce the influence of heat transfer on a bogie assembly when the generator 4 works, the shaft end generating set further comprises a heat insulation buffer cushion 2, and a motor support and the heat insulation buffer cushion are arranged at the end part of a wheel pair assembly or a wheel shaft through threaded fasteners. In this embodiment, the heat insulation buffer pad 2 is disposed between the motor support 3 and the bearing saddle 1, and the motor support 3 and the heat insulation buffer pad 2 are fixed on the bearing saddle 1 by a threaded fastener, so as to obstruct the heat conduction between the bearing saddle 1 and the motor support 3, as shown in fig. 1.
In the shaft end power generation device provided by the invention, the shaft coupling 7 has multiple schemes to realize clearance connection with the rotor shaft 501 of the rotor 502 in the generator 4, and the invention specifically provides three feasible mechanism schemes of the shaft coupling 7, which are specifically as follows:
the first possible solution: the coupler 7 comprises a base, wherein at least two fixing holes are formed in the base so as to be detachably mounted at the end part of the wheel shaft through a threaded fastener; the counter bore groove has been seted up on the base, the counter bore groove constitutes the draw-in groove, the inner rotor 502 of generator 4 has rotor shaft 501, the tip of rotor shaft 501 is provided with the card rank, so that rotor shaft 501 constitutes the card rank axle, it is concrete, three fixed orifices have been seted up at the non-central point of base, constitute triangle fixed orifices, central point at the base puts and is provided with the counter bore groove, the counter bore groove is the draw-in groove in the card rank structure, the tip of rotor shaft 501 of generator 4 is provided with the card rank, so that rotor shaft 501 constitutes the card rank axle, the base is in the axial with rotor shaft 501, radial equal clearance fit, the moment of torsion of transmission wheel and the axial radial skew in the automatic elimination motion process.
Because the first feasible coupler 7 is directly matched and connected with the rotor shaft 501 of the generator, the rotor shaft 501 of the generator 4 is easily abraded, and in order to reduce loss, avoid the generator 4 and reduce replacement cost, the invention provides a second feasible scheme: the coupler 7 comprises a base and a connecting body 703, wherein three fixing holes are formed in the non-central position of the base to form a triangular fixing hole so as to be detachably mounted at the end part of the wheel shaft through a threaded fastener; the connecting body 703 is axially and radially clearance-fitted and transmits torque with the rotor shaft 501 of the inner rotor 502 of the generator 4 by a snap structure. Specifically, in this embodiment, the base is provided with an opening with a bayonet corresponding to the connector 703, and the base is used for connecting the connector 703 and transmitting the torque formed by the wheel pair; the connector 703 comprises a tail part and a clamping part with a groove-shaped opening, the connector 703 is detachably mounted in the opening of the base through the tail part, the clamping part forms a clamping groove, a clamping step is arranged at the end part of the rotor shaft 501 of the generator 4, so that the rotor shaft 501 forms a clamping step shaft, the clamping part and the rotor shaft 501 of the generator 4 are in clearance fit in the axial direction and the radial direction, the torque of wheels is transmitted, and meanwhile, the axial radial deviation in the motion process is automatically compensated.
Above-mentioned two kinds of shaft couplings 7, owing to set up the counter bore groove on the base, will guarantee again with the rotor shaft 501's of generator 4 the depth of connection, the thickness of base needs the thickening of certain degree, set up fixed orifices and shaft coupling 7 on the base this moment and have certain degree of difficulty at the fixed mounting of shaft axle end, the rotor shaft 501 of generator 4 directly links to each other with shaft coupling 7 simultaneously, easy wearing and tearing, need change rotor shaft 501 after a period, not be applicable to practical application very much.
In order to optimize the base structure of the coupler 7, ensure the connection with the rotor shaft 501 of the generator 4 and ensure the stability of the installation, the third feasible scheme provided by the invention is that the coupler 7 comprises a base and a connecting body 703 made of wear-resistant materials; the base comprises a connecting plate 701 and a mounting seat 702 with a bayonet, wherein the mounting seat 702 protrudes out of the surface of the connecting plate 701; the connecting plate 701 is provided with at least two fixing holes so as to be detachably mounted at the end part of the wheel shaft through a threaded fastener; the connecting body 703 comprises a tail part and a clamping part with a groove-shaped opening, the connecting body 703 is detachably mounted in a bayonet of the mounting seat 702 through the tail part and detachably and axially fixedly mounted with the base through the connecting plate 701 to realize axial positioning with the base; the clamping part of the connecting body 703 forms a clamping groove, the inner rotor 502 of the generator 4 is provided with a rotor shaft 501, the end part of the rotor shaft 501 is provided with a clamping step so that the rotor shaft 501 forms a clamping step shaft, the clamping part and the rotor shaft 501 of the generator 4 are in clearance fit in the axial direction and the radial direction, the torque of a wheel is transmitted, and meanwhile, the axial radial deviation in the motion process is automatically compensated. The coupling 7 of the present embodiment specifically adopts the third possible solution, as shown in fig. 4.
The couplers 7 provided by the embodiment are all arranged at the end parts of the wheel shafts through the base and are detachably arranged at the end parts of the wheel shafts through threaded fasteners and fixing holes; in order to ensure the stability of fastening, in this embodiment, a nut of each nut is provided with a radial small hole, the radial locking is realized by a fixing iron wire 704 or a fixing member which can pass through the small hole and realize a fixing function, and a locking washer 705 is further disposed between the wheel axle and the coupling 7, as shown in fig. 8.
In this embodiment, the installation manner of the connecting body 703 and the base is not limited, for example, an external thread may be formed at the tail of the connecting body 703, a counter bore may be formed in the end surface of the base near the wheel axle, and the connecting body 703 and the base are axially positioned by a bolt. In order to simplify the structure of the base and simplify the installation operation, in this embodiment, the connecting body 703 further includes an elastic collar, the tail of the connecting body 703 is a cylindrical tail with a snap ring structure, the elastic collar is matched with the snap ring structure on the cylindrical tail, the connecting body 703 is in interference fit with the base, the cylindrical tail of the connecting body 703 is embedded in the base, and the axial positioning with the base is realized through the elastic collar, as shown in fig. 4.
As shown in fig. 5 and 6, the shaft end power generation device provided by this embodiment is a disc-type speed-increasing permanent magnet generator 4, which includes a motor 5 and a speed-increasing mechanism 6, where the speed-increasing mechanism 6 and the motor 5 are integrated into a whole, the motor 5 includes a rotor shaft 501, an inner rotor 502, a stator permanent magnet 503, a motor end cover 504, a motor housing 506 and a bearing, and the inner rotor 502 is internally disposed, the stator permanent magnet 503 is fixed in the motor housing 506, and the stator and the rotor form a disc-type structure of an axial magnetic circuit, so that the axial and radial dimensions of the motor 5 can be effectively reduced; both ends of the rotor shaft 501 are fixed to a motor end cover 504 and a motor housing 506 through bearings. The generator 4 is connected with the coupler 7 through the input shaft of the speed increasing mechanism 6, the input shaft of the speed increasing mechanism 6 is movably connected with the coupler 7 through a clamping step structure, and the input shaft and the coupler 7 are in clearance fit in the axial direction and the radial direction so as to transmit the torque formed by the wheel pair to the inner rotor 502 of the generator, improve the rotating speed when the vehicle runs at low speed, and solve the problem of insufficient power generation when the vehicle runs at low speed.
In order to ensure driving safety and realize self-protection when the generator 4 is stuck, in this embodiment, the shaft end power generation device further includes a shaft sleeve 8 and an elastic pin 9, as shown in fig. 5, an end portion of an input shaft of the speed increasing mechanism 6 is a cylindrical shaft, the shaft sleeve 8 is of a clamping step structure and is sleeved on the input shaft, a radial hole for the elastic pin 9 to pass through is formed in the input shaft, and the shaft sleeve 8 is fixed on the input shaft of the speed increasing mechanism 6 through the elastic pin 9. When the rotor shaft 501 has a clamping failure, the elastic pin 9 is sheared by shearing force, the shaft sleeve 8 is separated from the rotor shaft 501 and freely rotates, the torque from the wheel is released, the motor is protected, and the driving safety is guaranteed.
In order to prevent dust and avoid the influence of the harsh external environment on the internal components of the generator 4, the shaft end power generation device provided by the embodiment further comprises a protective cover 12 which is sleeved on the generator 4. The motor mounting portion 302 is an annular planar structure, and a motor mounting hole and a protective cover 12 mounting hole are formed in the motor mounting portion 302, in this embodiment, the motor mounting hole and the protective cover 12 mounting hole are concentrically arranged, as shown in fig. 1.
Similarly, in order to reduce the influence of heat transfer on the motor support 3 when the generator 4 works, in this embodiment, the shaft end power generation device further includes an insulating and heat insulating pad 13, and the insulating and heat insulating pad 13 is disposed between the motor support 3 and the bonding surface of the speed increasing mechanism 6, so as to block heat conduction between the generator 4 and the motor support 3, as shown in fig. 1.
In the shaft end power generation device in the prior art, a stator and an inner rotor 502 are fixed separately, and because the axial transmission and radial runout exist between a wheel shaft and a bearing saddle 1 and a generator 4 in operation, the gap between the stator and the inner rotor 502 is changed, and the performance and the reliability of the generator 4 are influenced; meanwhile, the whole weight of the power generation device is borne by the inner rotor 502 and is directly connected to the axle end of the axle, the weight of the axle is increased, the operation performance is affected, the direct connection mode of the inner rotor 502 and the axle end is adopted, the generator 4 and the axle do not have buffering, and the reliability and the service life of the generator are affected.
According to the shaft end power generation device provided by the embodiment, the motor support 3 is arranged, the suspension mass of the generator 4 is borne by the bearing saddle 1 and the bogie, the weight does not need to be borne by the inner rotor 502 and the rotor shaft 501 of the generator 4, and the power generation reliability is improved. Because the generator 4 and the shaft end adopt open clearance fit, the axial displacement and the radial displacement of the shaft end are eliminated by the fit clearance, the generator 4 can be effectively protected, and the performance and the reliability of the generator 4 are ensured. Meanwhile, compared with the scheme that the inner rotor 502 of the motor is directly connected with the shaft end in the prior art, the torque of the wheel is transmitted to the inner rotor 502 of the generator 4 through the coupler 7, the generator 4 has buffering with the wheel shaft, and the reliability and the service life of the generator 4 can be improved. Meanwhile, the torque of the wheel is transmitted to the disc type speed-increasing permanent magnet generator through the elastic pin 9, the rotating motion of the wheel is transmitted to the disc type speed-increasing permanent magnet generator, the speed-increasing mechanism 6 is driven through the elastic pin 9, the rotating speed is increased through the speed-increasing mechanism 6 and then transmitted to the rotor shaft 501 to achieve power generation, the rotating speed is increased when the vehicle runs at a low speed, the problem of insufficient power generation when the vehicle runs at a low speed is solved, and when the inside of the generator 4 is blocked, self-protection of the motor can be achieved through self-shearing of the elastic pin 9.
Example 2
Based on the same inventive concept, the present embodiment provides a bogie, which may be any one of the bogies in the prior art, such as a three-piece bogie, a frame bogie, and the like. Different from the prior art, the bogie provided by the embodiment is further provided with the shaft end power generation device of the embodiment 1, and since the embodiment does not improve the specific structure of the bogie, other structures of the bogie can refer to the prior art, and a description thereof is omitted. The specific structure of the axle end power generation device on the bogie is referred to as example 1, and details are not repeated here.
As shown in fig. 7 and 8, the bogie provided by the embodiment comprises a bearing adapter 1, a bearing and a bearing end cover 10, wherein the bearing adapter 1 is connected with a side frame of the bogie, the bearing adapter 1 is mounted at the end part of a wheel shaft through the bearing and is positioned at the outer side of a wheel, and a shaft end power generation device is mounted on the bearing adapter 1; the bearing end cover 10 covers and buckles the bearing and is connected with the wheel shaft; the coupling 7 is mounted on a bearing end cap 10. In the embodiment, the shaft end power generation device is arranged outside the bogie through a bearing saddle 1 arranged on the bogie; the bearing end cover 10 is detachably connected with the wheel shaft through a threaded fastener and is positioned between the bearing of the wheel shaft and the coupler 7 to transmit the torque formed by the wheel pair. Threaded holes which are in one-to-one correspondence with the fixing holes on the coupler 7 are formed in the non-central position of the bearing end cover 10, and the outer edge of the bearing end cover 10 is abutted against the inner ring of the wheel bearing; the coupling 7 is mounted on the bearing end cap 10 by end cap bolts 11.
In order to ensure the safety, performance and stability during the operation, the shaft end power generation device in this embodiment further includes a locking washer 705, the locking washer 705 is disposed between the bearing end cover 10 and the coupling 7 and located at the end of the connecting plate of the coupling 7, and the locking washer 705 is pressed by the end cover bolt 11 to fix the base of the coupling 7 on the bearing end cover 10, as shown in fig. 8.
The bogie provided by the present embodiment has the bogie shaft drive power generation device of the above embodiment 1, and thus has the technical effects of the bogie shaft drive power generation device of the above embodiment 1. In addition, when the shaft end power generation device provided by the embodiment 1 is applied to the existing bogie, the device can be completely suitable for the general main three-piece bogie of the railway freight car in China and the construction of the bogie, the structure of the three-piece bogie is not changed, only the mounting hole of the power generator 4 needs to be added on the end face of the bearing saddle 1, and the device is simple and reliable in overall design and low in cost. The generator 4 and the coupler 7 are in clearance fit, the generator 4 is not affected by the axial and radial displacement of the wheel set component and the wheel shaft relative to the bogie in the motion process, the weight of the generator 4 is transmitted to the bogie by the bearing saddle 1, the rotor shaft 501 of the generator 4 does not bear the weight of the generator 4, the reliability of the generator 4 is improved, meanwhile, the generator 4 can be directly disassembled when the bogie wheel set component is disassembled, the generator 4 is not required to be disassembled, the maintenance characteristic of the bogie is well kept, the power supply problem of a railway wagon can be solved in an influenced mode, the maintenance cost is low, and meanwhile, the power generation is stable and reliable.
Example 3
Based on the same inventive concept, the embodiment provides a railway vehicle, which can be any existing railway vehicle, such as a general-purpose truck like a gondola car, a box car and a flatcar, or a special truck like a tank car, a refrigerator car, a mineral car, a cement truck, a live fish truck, a special truck and a large and large cargo. The railway vehicle of the present embodiment is provided with the bogie according to the above-described embodiment 2, and specifically, the bogie according to the above-described embodiment 2 is used for all the bogies of the railway vehicle of the present embodiment, but it is needless to say that in another embodiment, one or a part of the bogies of the railway vehicle may be provided as the bogie according to the above-described embodiment 2. The invention is not limited to the specific form of use. Other structures of the railway vehicle are not improved in the embodiment, so that the other structures of the railway vehicle can refer to the prior art, and are not explained herein. The specific structure of the bogie is described in example 2, and will not be described in detail here. When the bogie provided by the embodiment 2 and provided with the axle end power generation device in the embodiment 1 is applied to the existing railway vehicle, the axle end power generation device generates power stably and reliably, the power supply problem of a railway wagon can be solved, and the equipment maintenance cost is low.
Through the embodiment, the invention has the following beneficial effects or advantages:
1) according to the shaft end power generation device provided by the invention, the generator and the shaft end are in open clearance fit, and the axial displacement and the radial displacement of the shaft end are eliminated by the fit clearance, so that the generator can be effectively protected, and the performance and the reliability of the generator are ensured. Compare with the scheme of motor inner rotor and axle head lug connection among the prior art, transmit the torque of wheel for the inner rotor of generator through the shaft coupling, there is the buffering generator with the shaft, can improve the reliability and the life of generator.
2) According to the shaft end power generation device provided by the invention, the torque of the wheel is transmitted to the generator through the elastic pin and the shaft sleeve, the rotating motion of the wheel is transmitted to the disc type speed-increasing permanent magnet generator, the speed-increasing mechanism is driven through the elastic pin, the rotating speed is increased through the speed-increasing mechanism and then transmitted to the rotor shaft to realize power generation, the rotating speed is increased when the vehicle runs at low speed, the problem of insufficient power generation when the vehicle runs at low speed is solved, and when the inside of the generator is blocked, the self-protection of the motor can be realized through the self-shearing of the elastic pin.
3) The shaft end power generation device provided by the invention can be completely suitable for the general main three-piece bogie of the railway wagon in China and the construction of the bogie when being applied to the existing bogie and the railway vehicle, does not change the structure of the three-piece bogie, only needs to add the mounting hole of the power generator on the end surface of the bearing saddle, has simple and reliable integral design and low cost, can influence the power supply problem of the railway wagon, has low maintenance cost, and simultaneously generates power stably and reliably.
4) According to the bogie provided by the invention, the shaft end power generation device is arranged on the bearing saddle through the motor support, the suspension mass of the generator is borne by the bearing saddle and the bogie, the load capacity of an inner rotor and a rotor bearing of the generator is not required, and the power generation reliability is improved.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (15)
1. The shaft end power generation device is used for being arranged at the end part of a wheel shaft formed by wheel pairs and is characterized by comprising a generator and a coupling, wherein the generator is provided with an inner rotor; the coupler is arranged at the end part of the wheel pair assembly and is connected with the wheel pair assembly and an inner rotor of the generator so as to transmit the torque of the wheel pair assembly; the shaft coupling with the inner rotor of generator passes through card rank structure swing joint, the card rank structure is including matching card rank axle and draw-in groove, the draw-in groove suit in card rank epaxial, just the draw-in groove with card rank axle is in axial and radial clearance fit.
2. The shaft end power generation apparatus of claim 1, further comprising a motor support; the motor support is arranged between the generator and the wheel shaft, and the generator is arranged at the end part of the wheel shaft through the motor support.
3. The shaft end power generation device of claim 2, wherein the motor support comprises an extension part and a motor mounting part for mounting the generator, one end of the extension part is used for arranging the motor support at the end part of the wheel shaft consisting of the wheel pair, and the other end of the extension part is fixedly connected with the motor mounting part; the motor installation department is cyclic annular planar structure, be provided with on the cyclic annular plane of motor installation department and be used for the installation the mounting hole of generator, the inner rotor of generator has the rotor shaft, the rotor shaft passes the mounting hole with the coupling joint.
4. The shaft end power generation apparatus of claim 3, wherein the inner surface and/or the outer surface of the extension portion is provided with a reinforcing rib; and reinforcing ribs are arranged on the connection transition area of the extension part and the motor installation part.
5. The shaft-end power generation device of any one of claims 1 to 4, further comprising a heat-insulating buffer pad, wherein the motor support and the heat-insulating buffer pad are disposed at the end of the wheel shaft by a threaded fastener.
6. The shaft end power generation apparatus of claim 1, wherein the coupling comprises a base; the base is provided with a counter bore groove, the counter bore groove forms the clamping groove, an inner rotor of the generator is provided with a rotor shaft, a clamping step is arranged at the end part of the rotor shaft, so that the rotor shaft forms the clamping step shaft, and the base is connected with the inner rotor of the generator and transmits torque formed by wheel pairs.
7. The shaft end power generation apparatus of claim 1, wherein the coupling comprises a base and a connecting body; the base is provided with an opening with a bayonet corresponding to the connecting body, and the base is connected with the connecting body and transmits torque formed by wheel pairs; the connecting body comprises a tail part and a clamping part with a groove-shaped opening, and the connecting body is detachably arranged in the open hole of the base through the tail part; the clamping part constitutes the draw-in groove, the inner rotor of generator has the rotor shaft, the tip of rotor shaft is provided with the card rank to make the rotor shaft constitutes the card rank axle, the clamping part with the inner rotor of generator is connected and is transmitted the moment of torsion of wheel pair constitution.
8. The shaft end power generation apparatus of claim 1, wherein the coupling comprises a base and a connecting body; the base comprises a connecting plate and a mounting seat with a bayonet, and the mounting seat protrudes out of the surface of the connecting plate; the connecting body comprises a tail part and a clamping part with a groove-shaped opening, and is detachably arranged in a bayonet of the mounting seat through the tail part and detachably and axially fixedly connected with the connecting plate; the clamping part of the connecting body forms the clamping groove, an inner rotor of the generator is provided with a rotor shaft, a clamping step is arranged at the end part of the rotor shaft, so that the rotor shaft forms the clamping step shaft, and the clamping part is connected with the inner rotor of the generator and transmits torque formed by wheel pairs.
9. The shaft end power generation device of claim 7 or 8, wherein the connecting body further comprises a circlip, the tail part of the connecting body is a cylindrical tail part with a snap ring structure, the circlip is matched with the snap ring structure on the cylindrical tail part, and the cylindrical tail part of the connecting body is embedded into the base and axially positioned with the base through the circlip.
10. The shaft end power generation device of claim 9, wherein the generator comprises a motor and a speed increasing mechanism, the speed increasing mechanism is integrated with the motor, an input shaft of the speed increasing mechanism is movably connected with the coupling through the clamping step structure, and the input shaft and the coupling are in clearance fit in both axial and radial directions so as to transmit torque formed by the wheel pair to an inner rotor of the generator.
11. The shaft-end power generation device of claim 10, further comprising a shaft sleeve and an elastic pin, wherein the shaft sleeve is of a clamping step structure and is sleeved on the input shaft, the input shaft is provided with a radial hole for the elastic pin to pass through, and the shaft sleeve is fixed on the input shaft of the speed increasing mechanism through the elastic pin.
12. The axial-end power generation device of claim 1, further comprising a protective cover that is sleeved on the generator.
13. A bogie characterized by comprising the shaft-end power generation device according to any one of claims 1 to 12; the bogie further comprises a bearing saddle, a bearing and a bearing end cover, the bearing saddle is connected with a side frame of the bogie, the bearing saddle is mounted at the end part of the wheel shaft through the bearing and is positioned on the outer side of the wheel, and the shaft end power generation device is mounted on the bearing saddle; the bearing end cover is buckled on the bearing and connected with the wheel shaft; the shaft coupling is installed on the bearing end cover.
14. The bogie of claim 13, wherein the shaft end power generation device further comprises a lock washer disposed between the bearing end cap and the coupler and at an end of the coupler.
15. A railway vehicle comprising a bogie as claimed in any one of claims 13 to 14.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870967.5A CN113489236A (en) | 2021-07-30 | 2021-07-30 | Axle end power generation facility, bogie and railway vehicle |
| AU2022317776A AU2022317776B2 (en) | 2021-07-30 | 2022-06-24 | Shaft end power generation device, bogie, and railway vehicle |
| PCT/CN2022/101175 WO2023005536A1 (en) | 2021-07-30 | 2022-06-24 | Shaft end power generation device, bogie, and railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870967.5A CN113489236A (en) | 2021-07-30 | 2021-07-30 | Axle end power generation facility, bogie and railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113489236A true CN113489236A (en) | 2021-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110870967.5A Pending CN113489236A (en) | 2021-07-30 | 2021-07-30 | Axle end power generation facility, bogie and railway vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113489236A (en) |
| AU (1) | AU2022317776B2 (en) |
| WO (1) | WO2023005536A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382792A (en) * | 2021-12-29 | 2022-04-22 | 国能铁路装备有限责任公司 | Shaft coupling, shaft end power generation device and railway vehicle |
| CN114421702A (en) * | 2022-02-25 | 2022-04-29 | 同济大学 | Novel shaft end generator for railway wagon |
| WO2023005536A1 (en) * | 2021-07-30 | 2023-02-02 | 中车长江运输设备集团有限公司 | Shaft end power generation device, bogie, and railway vehicle |
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| CN1249251A (en) * | 1998-07-22 | 2000-04-05 | 惠特克公司 | Electric power device mounted to axle and with improved drive coupling |
| JP2018021575A (en) * | 2016-08-01 | 2018-02-08 | アスモ株式会社 | Electric parking brake device |
| CN209435038U (en) * | 2019-01-20 | 2019-09-24 | 深圳市实能高科动力有限公司 | Bearing-free motor and the goods train carriage for being equipped with bearing-free motor |
| CN112532008A (en) * | 2020-11-13 | 2021-03-19 | 长沙理工大学 | Bogie shaft end disc type power generation device |
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| US6220175B1 (en) * | 1999-03-01 | 2001-04-24 | The Whitaker Corporation | Apparatus and method for mounting a generator to the axle of a railroad car |
| CN105715685A (en) * | 2016-04-19 | 2016-06-29 | 镇江索达联轴器有限公司 | Transmission coupling of electric hydraulic pump |
| CN113489236A (en) * | 2021-07-30 | 2021-10-08 | 中车长江运输设备集团有限公司 | Axle end power generation facility, bogie and railway vehicle |
-
2021
- 2021-07-30 CN CN202110870967.5A patent/CN113489236A/en active Pending
-
2022
- 2022-06-24 AU AU2022317776A patent/AU2022317776B2/en active Active
- 2022-06-24 WO PCT/CN2022/101175 patent/WO2023005536A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249251A (en) * | 1998-07-22 | 2000-04-05 | 惠特克公司 | Electric power device mounted to axle and with improved drive coupling |
| JP2018021575A (en) * | 2016-08-01 | 2018-02-08 | アスモ株式会社 | Electric parking brake device |
| CN209435038U (en) * | 2019-01-20 | 2019-09-24 | 深圳市实能高科动力有限公司 | Bearing-free motor and the goods train carriage for being equipped with bearing-free motor |
| CN112532008A (en) * | 2020-11-13 | 2021-03-19 | 长沙理工大学 | Bogie shaft end disc type power generation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005536A1 (en) * | 2021-07-30 | 2023-02-02 | 中车长江运输设备集团有限公司 | Shaft end power generation device, bogie, and railway vehicle |
| CN114382792A (en) * | 2021-12-29 | 2022-04-22 | 国能铁路装备有限责任公司 | Shaft coupling, shaft end power generation device and railway vehicle |
| CN114421702A (en) * | 2022-02-25 | 2022-04-29 | 同济大学 | Novel shaft end generator for railway wagon |
| CN114421702B (en) * | 2022-02-25 | 2024-02-23 | 同济大学 | Shaft end generator for railway wagon |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022317776B2 (en) | 2024-10-03 |
| WO2023005536A1 (en) | 2023-02-02 |
| AU2022317776A1 (en) | 2023-11-23 |
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Application publication date: 20211008 |