CN111703441B - A motor end cover, bogie and rail vehicle for bogie - Google Patents
A motor end cover, bogie and rail vehicle for bogie Download PDFInfo
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- CN111703441B CN111703441B CN202010574346.8A CN202010574346A CN111703441B CN 111703441 B CN111703441 B CN 111703441B CN 202010574346 A CN202010574346 A CN 202010574346A CN 111703441 B CN111703441 B CN 111703441B
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- Prior art keywords
- end cover
- axle box
- motor
- bogie
- axle
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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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- 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
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/28—Axle-boxes integral with, or directly secured to, vehicle or bogie underframes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The embodiment of the application provides a motor end cover for a bogie, the bogie and a railway vehicle. The motor end cover is provided with an end cover shaft hole which penetrates through the motor end cover, and the end cover shaft hole is used for an axle of the bogie to penetrate through; the outer side of the motor end cover is provided with a motor end cover flanging, the motor end cover flanging is provided with a motor end cover bolt hole, and the motor end cover bolt hole is used for being fixed with a wheel pair axle box of the bogie; the inner side of the motor end cover is used for being fixed with a motor shell of a permanent magnet direct drive motor of the bogie. The bogie comprises the motor end cover. The railway vehicle comprises the bogie. The embodiment of the application provides and solves the technical problem that the existing motor direct-drive bogie needs to be a permanent magnet direct-drive motor and is provided with a supporting structure independently, so that the bogie is complex in structure and large in mass.
Description
Technical Field
The application relates to the technical field of railway vehicles, in particular to a motor end cover for a bogie, the bogie and a railway vehicle.
Background
A transmission gear box and a coupling are added on the basis of a traction motor in the traditional bogie driving system, and gear-driven gear meshing friction pairs, gear couplings and the like can generate noise and vibration in different degrees in the meshing process; power loss and efficiency reduction can be caused in the transmission process; in addition, the gear engagement friction pair gradually wears, and the maintenance cost is increased due to maintenance and replacement, and the quality of the bogie is high.
The motor direct-drive bogie is a bogie which directly transmits the output torque or force of a traction motor to a wheel set by removing a transmission part between the motor and the wheel set of the traditional bogie. The design idea of the bogie is to cancel a gear transmission system of the traditional bogie and adopt a direct drive system without gear transmission, and the direct drive bogie is characterized in that a motor directly drives a wheel pair, and middle links such as a gear transmission mechanism, a motor suspension device and the like are omitted. The existing motor direct-drive bogie needs to be provided with a support structure for a permanent magnet direct-drive motor, so that the bogie is complex in structure and still large in quality.
Therefore, the existing motor direct-drive bogie needs to be provided with a support structure for the permanent magnet direct-drive motor, so that the bogie is complex in structure and large in mass, and the technical problem which needs to be solved by technical personnel in the field is solved urgently.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.
Disclosure of Invention
The embodiment of the application provides a motor end cover for bogie, bogie and rail vehicle to solve current motor and directly drive the bogie and need set up bearing structure for permanent magnetism directly drives the motor alone, lead to the complicated and great technical problem of quality of bogie structure.
The embodiment of the application provides a motor end cover for a bogie, wherein the motor end cover is provided with an end cover shaft hole which penetrates through the motor end cover, and an axle of the bogie penetrates through the end cover shaft hole;
the outer side of the motor end cover is provided with a motor end cover flanging, the motor end cover flanging is provided with a motor end cover bolt hole, and the motor end cover bolt hole is used for being fixed with a wheel pair axle box of the bogie;
the inner side of the motor end cover is used for being fixed with a motor shell of a permanent magnet direct drive motor of the bogie;
wherein the bogie further comprises:
the wheel set, the axle box of the wheel set and the bearing for the axle box, wherein two bearings for the axle box are arranged between two wheels of the wheel set on an axle of the wheel set, the inner ring of the bearing for the axle box is fixedly sleeved on the axle, and the axle box of the wheel set is sleeved on the outer ring of the bearing for the axle box;
the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator; the rotor is fixed on the axle, and the stator and the motor shell are fixed into a whole and sleeved outside the rotor; the axletree passes the end cover shaft hole, the motor end cover is located motor housing with between the wheel pair axle box, be located with one side the motor end cover with it is fixed to the wheel pair axle box.
The embodiment also provides the following technical scheme:
a bogie comprises the motor end cover.
The embodiment also provides the following technical scheme:
a rail vehicle comprises the bogie.
Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:
and the motor end cover plays a role in fixing a motor shell of the permanent magnet direct drive motor of the bogie and the wheel set axle box into a whole. For clarity of illustrating the function of the motor end cover, the state of the motor end cover installed in the bogie is described as follows: the wheel set axle box setting mode has following characteristics: firstly, the axle is of a hollow shaft structure, and the mass of the axle is smaller; secondly, two wheel-set axle boxes are fixed between two wheels, and the method belongs to a wheel-set axle box built-in mode; and thirdly, the inner ring of the bearing for the axle box is fixed on the axle, and the wheel-set axle box is sleeved on the outer ring of the bearing for the axle box, namely the outer ring of the bearing for the axle box plays a role in supporting the wheel-set axle box, so that the wheel, the axle and the inner ring of the bearing for the axle box are fixed together and can rotate relative to the wheel-set axle box. The setting mode of the permanent magnet direct drive motor as the drive motor has the following characteristics: firstly, the way that the rotor is fixed on the axle realizes the direct drive of the axle, namely the way that the permanent magnet direct drive motor directly drives the axle; secondly, the support required by the stator and the motor shell which are fixed into a whole is realized not by a mode of independently arranging a bearing, but by fixing the motor shell, the motor end cover and the wheel set axle box into a whole, so that the motor shell, the stator, the motor end cover and the wheel set axle box are fixed into a whole, and the wheel set axle box is sleeved on the outer ring of the bearing for the axle box, so that the outer ring of the bearing for the axle box also plays a supporting role for the stator and the motor shell, namely the bearing for the axle box realizes the purpose of reusing the bearing for supporting the stator and the motor shell through the motor end cover. According to the bogie for the railway vehicle, the axle is of a hollow shaft structure, the wheel pair axle box is internally arranged, the length of the axle is short, and the mass of the axle is small; the axle box is with one set of bearing, and the mode of supporting wheel pair axle box and stator and motor housing simultaneously no longer need set up the bearing alone for stator and motor housing alone for the simple structure of whole bogie, unsprung mass is less, accords with the lightweight development trend of bogie. The motor end cover for the bogie in the embodiment of the application has the advantages that the structure is simple, the quality is small, the motor shell of the permanent magnetic direct drive motor of the bogie and the wheel set axle box are fixed into a whole through a simple structure, the mode that the bearing for the axle box of the bogie supports the wheel set axle box and the stator and the motor shell simultaneously is realized, and the bearing does not need to be independently arranged for the stator and the motor shell.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic perspective view of a bogie for a railway vehicle according to a second embodiment of the present application;
FIG. 2 is a top view of the truck shown in FIG. 1;
FIG. 3 is a side view of the truck shown in FIG. 1;
FIG. 4 is a front view of the truck shown in FIG. 1;
FIG. 5 is a cross-sectional view A-A of the truck shown in FIG. 2;
FIG. 6 is a cross-sectional view B-B of the truck shown in FIG. 2;
FIG. 7 is a perspective view of the bogie of FIG. 2 with the wheel set and the permanent magnet direct drive motor integrally mounted;
fig. 8 is a perspective view of a motor end cover for a bogie according to a first embodiment of the present application;
FIG. 9 is a schematic view of another angle of the motor end cap shown in FIG. 8;
FIG. 10 is a cross-sectional view of the motor end cap C-C shown in FIG. 9;
FIG. 11 is a perspective view of a wheelset axlebox of the bogie mated with the motor end cap shown in FIG. 8;
FIG. 12 is a perspective view of another angle of the wheelset axlebox of FIG. 11;
FIG. 13 is a perspective view of the frame of the truck shown in FIG. 1;
FIG. 14 is a top view of the frame of FIG. 13;
FIG. 15 is a side view of the frame of FIG. 13;
FIG. 16 is a front view of the frame of FIG. 13;
fig. 17 is a perspective view of a draft gear of the truck shown in fig. 1.
Description of reference numerals:
11-axle, 12-wheels,
2-wheel-pair axle box, 21-axle box through hole, 22-axle box flanging, 221 axle box bolt hole, 23 butt joint groove, 24-axle box primary mounting interface, 25-axle box longitudinal mounting seat, 26-axle box vertical mounting seat,
3-a bearing for the axle box,
4-permanent magnet direct drive motor, 41-motor shell, 42-rotor, 43-motor end cover, 431-end cover shaft hole, 432-end cover main body, 432-1 end cover main body threaded hole, 433-motor end cover flanging, 433-1 motor end cover bolt hole, 434 butt joint bulge, 435-buckle, 436 sealing ring installation groove, 437 motor longitudinal installation seat,
5-framework, 51-side beam, 511-primary mounting part, 511-1 side beam primary mounting interface, 512-connecting part, 513-longitudinal mounting seat at side beam, 514-bending part, 515-transverse damper seat at connecting part, 516-braking device mounting seat, 52-cross beam, 521-longitudinal mounting seat at cross beam, 53-secondary mounting seat,
61-primary spring, 62-secondary air spring,
71-side longitudinal links, 73-middle longitudinal links,
81-traction device, 811-transverse damper seat at traction device, 82-transverse damper.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The first embodiment is an embodiment of a motor end cover for a bogie, and the second embodiment is an embodiment of a bogie comprising the motor end cover of the first embodiment.
Fig. 8 is a perspective view of a motor end cover for a bogie according to a first embodiment of the present application; FIG. 9 is a schematic view of another angle of the motor end cap shown in FIG. 8; FIG. 10 is a cross-sectional view of the motor end cap C-C shown in FIG. 9; FIG. 11 is a perspective view of a wheelset axlebox of the bogie mated with the motor end cap shown in FIG. 8; figure 12 is a perspective view of the wheelset axlebox of figure 11 at another angle.
Fig. 1 is a schematic perspective view of a bogie for a railway vehicle according to a second embodiment of the present application; FIG. 2 is a top view of the truck shown in FIG. 1; FIG. 3 is a side view of the truck shown in FIG. 1; FIG. 4 is a front view of the truck shown in FIG. 1; FIG. 5 is a cross-sectional view A-A of the truck shown in FIG. 2; FIG. 6 is a cross-sectional view B-B of the truck shown in FIG. 2; fig. 7 is a perspective view of the bogie of fig. 2 with the wheel set and the permanent magnet direct drive motor integrally mounted.
Example one
As shown in fig. 8, 9 and 10, 11 and 12, the motor end cover 43 for the bogie of the embodiment of the present application has an end cover shaft hole 431 therethrough, and the end cover shaft hole 431 is used for the axle of the bogie to pass through;
the outer side of the motor end cover is provided with a motor end cover flange 433 which is provided with a motor end cover bolt hole 433-1, and the motor end cover bolt hole 433-1 is used for being fixed with a wheel pair axle box 2 of the bogie;
the inner side of the motor end cover is used for being fixed with a motor shell 41 of a permanent magnet direct drive motor of the bogie;
wherein, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the bogie further comprises:
a wheelset, a wheelset axle box 2 and an axle box bearing 3, wherein the two axle box bearings 3 are mounted between two wheels 12 of the wheelset on an axle 11 of the wheelset, an inner ring of the axle box bearing 3 is fixedly sleeved on the axle 11, and the wheelset axle box 2 is sleeved on an outer ring of the axle box bearing 3 so that the axle 11 can rotate relative to the wheelset axle box 2;
the permanent magnet direct drive motor 4 is arranged between the two wheel set axle boxes 2 and comprises a motor shell 41, a rotor 42 and a stator; the rotor 42 is fixedly sleeved on the axle 11 to directly drive the axle 11, and the stator and the motor housing 41 are fixed into a whole and sleeved outside the rotor 42; the axle 11 passes through the end cover shaft hole 431, the motor end cover 43 is located between the motor housing 41 and the wheel-set axle box 2, and the motor end cover 41 and the wheel-set axle box 2 located on the same side are fixed.
The motor end cover for the bogie in the embodiment of the application has the function of fixing the motor shell of the permanent magnet direct drive motor of the bogie and the wheel set axle box into a whole. For clarity of illustrating the function of the motor end cover, the state of the motor end cover installed in the bogie is described as follows: the wheel set axle box setting mode has following characteristics: firstly, the axle is of a hollow shaft structure, and the mass of the axle is smaller; secondly, two wheel-set axle boxes are fixed between two wheels, and the method belongs to a wheel-set axle box built-in mode; and thirdly, the inner ring of the bearing for the axle box is fixed on the axle, and the wheel-set axle box is sleeved on the outer ring of the bearing for the axle box, namely the outer ring of the bearing for the axle box plays a role in supporting the wheel-set axle box, so that the wheel, the axle and the inner ring of the bearing for the axle box are fixed together and can rotate relative to the wheel-set axle box. The setting mode of the permanent magnet direct drive motor as the drive motor has the following characteristics: firstly, the way that the rotor is fixed on the axle realizes the direct drive of the axle, namely the way that the permanent magnet direct drive motor directly drives the axle; secondly, the support required by the stator and the motor shell which are fixed into a whole is realized not by a mode of independently arranging a bearing, but by fixing the motor shell, the motor end cover and the wheel set axle box into a whole, so that the motor shell, the stator, the motor end cover and the wheel set axle box are fixed into a whole, and the wheel set axle box is sleeved on the outer ring of the bearing for the axle box, so that the outer ring of the bearing for the axle box also plays a supporting role for the stator and the motor shell, namely the bearing for the axle box realizes the purpose of reusing the bearing for supporting the stator and the motor shell through the motor end cover. According to the bogie for the railway vehicle, the axle is of a hollow shaft structure, the wheel pair axle box is internally arranged, the length of the axle is short, and the mass of the axle is small; the axle box is with one set of bearing, and the mode of supporting wheel pair axle box and stator and motor housing simultaneously no longer need set up the bearing alone for stator and motor housing alone for the simple structure of whole bogie, unsprung mass is less, accords with the lightweight development trend of bogie. The motor end cover for the bogie in the embodiment of the application has the advantages that the structure is simple, the quality is small, the motor shell of the permanent magnetic direct drive motor of the bogie and the wheel set axle box are fixed into a whole through a simple structure, the mode that the bearing for the axle box of the bogie supports the wheel set axle box and the stator and the motor shell simultaneously is realized, and the bearing does not need to be independently arranged for the stator and the motor shell.
Specifically, the motor end cover is suitable for a bogie which is arranged in an axle box and driven by a permanent magnet direct drive motor.
The motor end covers are the motor end covers of the permanent magnet direct drive motor, are fixed at two ends of a motor shell and are positioned between the motor shell and the wheel set axle box; on the other hand, the motor end cover and the wheel-set axle box which are positioned on the same side are fixed, so that a motor shell and the wheel-set axle box are fixed into a whole through the motor end cover; meanwhile, the motor end cover is used as the end cover of the wheel set axle box, so that one part has multiple functions, the parts of the bogie are fewer, and the quality of the bogie is favorably controlled.
The specific structure of the motor end cover is related.
In practice, as shown in fig. 8, 9 and 10, the motor end cover 43 includes:
an end cap body 432, the end cap shaft hole 431 passing through the middle of the end cap body 432;
the hole wall of the end cover shaft hole protrudes from the outer side of the end cover main body 432, and the outer side of the protruding part is provided with the motor end cover flange 433; the motor end cover flanging is provided with a motor end cover bolt hole 433-1;
as shown in fig. 11 and 12, the wheelset axle box 2 has an axle box through hole 21, and the axle box through hole 21 is fitted to the outer ring of the axle box bearing 3; the outer side of the axle box through hole 21 is convexly provided with an axle box flange 22, and the axle box flange 22 is provided with an axle box bolt hole 221;
the motor end cover 43 and the wheel set axle box 2 are fixed through bolts, nuts, motor end cover bolt holes 433-1 and axle box bolt holes 221.
One side of the motor end cover is provided with a motor end cover flanging, and the motor end cover flanging is provided with a motor end cover bolt hole; one side of the wheel set axle box is provided with an axle box flanging, the axle box flanging is provided with an axle box bolt hole, and the motor end cover flanging and the axle box flanging are fixed together through the matching of a motor end cover bolt hole, an axle box bolt hole, a bolt and a nut, so that the motor end cover and the wheel set axle box are fixed together.
In implementation, as shown in fig. 8, 9 and 10, the hole wall of the end cover shaft hole protrudes from the motor end cover flange to serve as a butt-joint protrusion 434, and the axle box through hole has a butt-joint groove 23 at a side where the axle box flange is disposed;
the butt joint protrusion and the butt joint groove are in butt joint to achieve alignment of the motor end cover and the wheel-pair axle box.
The butt joint of the butt joint protrusion 434 and the butt joint groove 23 realizes the alignment of the motor end cover and the wheel-pair axle box.
The existence of butt joint protruding and butt joint recess, realization end cover shaft hole that can be convenient and axle box through-hole counterpoint on length direction, can be convenient realization axle box bolt hole and motor end cover bolt hole counterpoint through rotating for the fixed simple operation of motor end cover and wheel pair axle box.
In an implementation, as shown in fig. 9 and 10, the motor end cover 43 further includes:
a clasp 435 that is an end-to-end closed shape clasp 435; the buckle 435 is arranged on the inner side of the motor end cover, namely, the buckle 435 and the motor end cover flange 433 are respectively arranged on two opposite sides of the end cover main body 432;
the end cap body 432 has an end cap body threaded bore 432-1 for mating with a motor housing threaded bore of the motor housing; the motor shell is provided with a motor shell threaded hole matched with the end cover threaded hole, and the end cover main body threaded hole 432-1 and the motor shell threaded hole are fixedly connected with the motor end cover through bolts;
the motor end cover is provided with a clamping groove, and the motor end cover is matched with the clamping groove in a clamping mode.
The position of the buckle is matched with the clamping groove of the motor shell.
The motor end cover is provided with the buckle, and the corresponding motor shell is provided with the clamping groove, so that the structure is simple. The motor end cover is simple in structure, and the motor end cover and the motor shell are fixed.
In practice, as shown in fig. 8 and 12, the motor end cover flange 433 has four lugs, and the four lugs of the motor end cover flange 433 are located at four vertices of a rectangular frame;
the number of the motor end cover bolt holes 433-1 is four, and the motor end cover bolt holes are respectively located at four lugs of the motor end cover flanging 433;
correspondingly, the pedestal collar 22 has four lugs, and the four lugs of the pedestal collar are located at four vertices of the rectangular frame; the number of the pedestal bolt holes 221 is four, and the pedestal bolt holes are located at four lugs of the pedestal collar 22.
The motor end cover is provided with a motor end cover bolt hole, and the corresponding wheel set axle box is provided with an axle box bolt hole which is matched with a bolt and a nut, so that the motor end cover and the wheel set axle box can be stably fixed together.
In practice, as shown in fig. 5 and 10, the end cap body 432 is a flat, cone-funnel shaped end cap body;
the motor end cover flange 433 is arranged at the conical funnel mouth part of the end cover main body 432, and the buckle 435 is arranged at the edge position of the conical funnel cylindrical structure of the end cover main body 432.
The motor end cover with the structure has a simple structure and is convenient to process and manufacture.
Specifically, as shown in fig. 8 and 9, the end cover body 432 is a conical funnel-shaped end cover body having a shape formed by cutting the upper and lower edges in parallel, so as to reduce the weight and avoid other parts of the bogie.
In implementation, as shown in fig. 9, the end cover main body 432 is provided with sealing ring installation grooves 436 in an end-to-end closed shape at positions on the periphery of the end cover shaft hole;
wherein the bogie further comprises a sealing ring disposed in the sealing ring mounting groove 436 to effect a seal between the end cap body and the wheelset axle housing.
The sealing ring is matched with the sealing ring mounting groove, so that sealing between the motor end cover and the wheel set axle box is realized, and external dust is reduced from entering the wheel set axle box through the mounting positions of the motor end cover and the wheel set axle box.
Specifically, the motor housing is a cylindrical motor housing; the end cover shaft hole is located in the middle of the motor end cover.
The motor shell and the motor end cover with the structure are simple in structure and convenient to process and manufacture.
Specifically, the sealing ring mounting groove is an annular sealing ring mounting groove;
the clamping groove is an annular clamping groove, and the buckle is an annular buckle.
The annular sealing ring mounting groove is convenient to process and mount the sealing ring. The annular clamping groove is convenient to process and install the buckle conveniently.
Example two
The bogie of the embodiment of the present application, as shown in fig. 1, 2, 3, 4, 5, 6 and 7, includes:
a motor end cover 43, the motor end cover 4 according to the first embodiment;
a wheelset, a wheelset axle box 2 and an axle box bearing 3, wherein the two axle box bearings 3 are installed between two wheels 12 of the wheelset on an axle 11 of the same wheelset, an inner ring of the axle box bearing 3 is fixedly sleeved on the axle, and the wheelset axle box 2 is sleeved on an outer ring of the axle box bearing 3 so that the axle 11 can rotate relative to the wheelset axle box 2; the bearing for the axle box is a rolling bearing;
the permanent magnet direct drive motor 4 is arranged between the two wheel pair axle boxes 2 and comprises a motor shell 41, a rotor 42 and a stator, the motor end covers 43 are respectively fixed at two ends of the motor shell 41, and the axle 11 passes through the end cover axle hole 431;
wherein, the rotor 42 cup joints fixedly the outer peripheral face of axletree 11 is with direct drive the axletree, the stator with motor housing 41 is fixed as an organic whole and cup joint in the outside of rotor 42, two motor end cover 43 is located respectively motor housing 41 and two between the wheel pair axle box 2, and is located with one side motor end cover 41 with wheel pair axle box 2 is fixed in order to realize motor housing, motor end cover with the wheel pair axle box is fixed as an organic whole.
The bogie for the railway vehicle provided by the embodiment of the application has the following characteristics in the setting mode of the wheel pair axle box: firstly, the axle is of a hollow shaft structure, and the mass of the axle is smaller; secondly, two wheel-set axle boxes are fixed between two wheels, and the method belongs to a wheel-set axle box built-in mode; and thirdly, the inner ring of the bearing for the axle box is fixed on the axle, and the wheel-set axle box is sleeved on the outer ring of the bearing for the axle box, namely the outer ring of the bearing for the axle box plays a role in supporting the wheel-set axle box, so that the wheel, the axle and the inner ring of the bearing for the axle box are fixed together and can rotate relative to the wheel-set axle box. The setting mode of the permanent magnet direct drive motor as the drive motor has the following characteristics: firstly, the way that the rotor is fixed on the axle realizes the direct drive of the axle, namely the way that the permanent magnet direct drive motor directly drives the axle; secondly, the support required by the stator and the motor shell which are fixed into a whole is realized not by a mode of independently arranging a bearing, but by fixing the motor shell, the motor end cover and the wheel set axle box into a whole, so that the motor shell, the stator, the motor end cover and the wheel set axle box are fixed into a whole, and the wheel set axle box is sleeved on the outer ring of the bearing for the axle box, so that the outer ring of the bearing for the axle box also plays a supporting role for the stator and the motor shell, namely the bearing for the axle box realizes the purpose of reusing the bearing for supporting the stator and the motor shell through the motor end cover. According to the bogie for the railway vehicle, the axle is of a hollow shaft structure, the wheel pair axle box is internally arranged, the length of the axle is short, and the mass of the axle is small; the axle box is with one set of bearing, and the mode of supporting wheel pair axle box and stator and motor housing simultaneously no longer need set up the bearing alone for stator and motor housing alone for the simple structure of whole bogie, unsprung mass is less, accords with the lightweight development trend of bogie.
The motor end covers are the motor end covers of the permanent magnet direct drive motor, are fixed at two ends of a motor shell and are positioned between the motor shell and the wheel set axle box; on the other hand, the motor end cover and the wheel-set axle box which are positioned on the same side are fixed, so that a motor shell and the wheel-set axle box are fixed into a whole through the motor end cover; meanwhile, the motor end cover is used as the end cover of the wheel set axle box, so that one part has multiple functions, the parts of the bogie are fewer, and the quality of the bogie is favorably controlled.
Specifically, the rolling bearing has balls between an inner ring and an outer ring thereof.
As shown in fig. 2, 5 and 7, the motor housing 41 is a cylindrical motor housing.
As shown in fig. 5, 7, 8, 9 and 10, the axle 11 passes through the two end cover shaft holes 431 and the hollow portion of the motor housing.
Specifically, the motor housing is a cylindrical motor housing.
Specifically, the end cover shaft hole is located in the middle of the motor end cover.
Specifically, the rotor and the stator are both located in the motor housing, and the stator is fixed with the motor housing.
Specifically, the axle is of a hollow shaft structure;
two wheels fixed on the same axle are symmetrically arranged.
Specifically, the wheels and the axle are in interference fit;
the inner ring of the bearing for the axle box is in interference fit with the axle;
and the rotor and the axle are in interference fit.
FIG. 13 is a perspective view of the frame of the truck shown in FIG. 1; FIG. 14 is a top view of the frame of FIG. 13; FIG. 15 is a side view of the frame of FIG. 13; FIG. 16 is a front view of the frame of FIG. 13; fig. 17 is a perspective view of a draft gear of the truck shown in fig. 1.
The bogie has the following features.
In practice, as shown in fig. 1, 2, 3, 4, 5, 13, 14, 15 and 16, the bogie further comprises a frame 5 and a primary suspension; the frame 5 includes:
the side beam comprises two side beams 51 which are arranged in parallel, wherein two primary mounting parts 511 are arranged at two ends of each side beam 51, a connecting part 512 for connecting the two primary mounting parts is arranged in the middle of each side beam 51, and the connecting parts 512 of the two side beams are oppositely sunken in the transverse direction;
a cross member 52 connecting the connecting portions 512 of the two side members;
the primary suspension unit is mounted on the wheelset axle box 2, the primary mounting portion 511 of the side member is seated on the primary suspension unit, and the frame 5 is seated on both of the wheelsets 12.
The width of the track determines the distance between two wheels of the same wheel pair; the wheel-set axle box is arranged between two wheels of the same wheel set, namely the wheel-set axle box is internally arranged; correspondingly, the distance between the opposite primary mounting parts of the two side beams is determined, and the connecting parts of the two side beams are recessed towards each other in the transverse direction, namely the distance between the opposite connecting parts of the two side beams in the transverse direction is smaller than the distance between the opposite primary mounting parts of the two side beams; correspondingly, the length of the cross beam in the transverse direction is also smaller. Therefore, the bogie frame is small in transverse size, the framework is also small in mass, the unsprung mass of the bogie is also small, and the trend of light weight development of the bogie is met.
In practice, as shown in fig. 1 and 2, the bogie further comprises two secondary air springs 62;
the framework 5 further comprises two secondary mounting seats 53, and the two secondary mounting seats 53 are respectively fixed on the outer sides of the middle positions of the connecting parts 512 of the two side beams and protrude out of the two ends of the side beams in the transverse direction;
wherein, two of the secondary air springs 62 are mounted on the two secondary mounting seats 53.
In the prior art, the secondary mounting seats are arranged on the middle position of the side beam, and the position corresponds to the secondary air spring mounting seat of the vehicle body. In the bogie frame according to the embodiment of the present invention, the connecting portions of the two side members are recessed in the lateral direction, so that the space between the connecting portions of the two side members is reduced, and in order to match the position of the secondary air spring mounting seat of the vehicle body, the secondary mounting seat is disposed outside the middle position of the connecting portions of the two side members.
In an implementation, the bogie further comprises a tread braking device;
as shown in the figure, the frame further comprises a braking device mounting seat 516, two braking device mounting seats 516 are fixed at the bottom of the middle position of the connecting part of each side beam, and the two braking device mounting seats 516 are respectively positioned at two sides of the secondary mounting seat 53;
wherein the tread brake device is mounted at the brake device mounting seat.
In practice, as shown in fig. 6, the primary suspension means comprises a primary spring 61;
the outer top of the wheel-pair axle box is provided with two axle box primary mounting interfaces 24 at intervals along the longitudinal direction;
the inner top of the first series mounting part 511 of the side beam is provided with two first series mounting interfaces 511-1 of the side beam at intervals along the longitudinal direction;
every two of the primary springs 61 are respectively mounted with two axle box primary mounting interfaces 24 of the same wheel-pair axle box, and the two side beam primary mounting interfaces 511-1 of the primary mounting interfaces are located on the two primary springs 61.
The outer top of each wheel-pair axle box is provided with two axle box primary mounting interfaces, correspondingly, the inner top of each primary mounting part is also provided with two side beam primary mounting interfaces, and the two axle box primary mounting interfaces and the two side beam primary mounting interfaces are arranged at intervals along the longitudinal direction. Thus, the frame and the axle are suspended by four groups of springs, and the vertical, longitudinal and transverse acting forces are better transmitted.
In implementation, as shown in fig. 6, the bottom of the connecting part of the side beam is provided with two side beam longitudinal mounting seats 513;
the wheel set axle box is provided with an axle box longitudinal mounting seat 25;
the bogie further comprises lateral longitudinal connecting rods 71, and two ends of each lateral longitudinal connecting rod 71 are respectively connected with the longitudinal mounting seats 25 at the axle boxes and the longitudinal mounting seats 513 at the side beams, so that longitudinal connection between the wheel pair axle boxes and the framework is realized.
In this way, a longitudinal connection of the axlebox and the frame is achieved.
In practice, as shown in fig. 6, 13 and 15, the ends of the side beams have downward bends 514;
the wheel set axle box is provided with an axle box vertical mounting seat 26;
the bogie further comprises a vertical lifting crane, wherein the upper end and the lower end of the vertical lifting crane are respectively connected with the inner side of the bending part 514 and the vertical mounting seat 26 at the axle box position, so that the vertical connection of the wheel pair axle box and the framework is realized.
In the transverse direction, a wheel pair axle box, a motor end cover, a motor shell, the motor end cover and the wheel pair axle box are sequentially and fixedly connected into a whole between two wheels, so that the movement of the wheel pair axle box along the axle in the transverse direction is limited. The side longitudinal connecting rods connect the wheel-set axle boxes with the bottoms of the connecting parts of the side beams of the framework, so that the wheel-set axle boxes are limited to move in the longitudinal direction; the vertical hoist connects the wheel-set axle-box to the frame, limiting movement of the wheel-set axle-box in the vertical direction. Synchronous operation of the frame and the wheel pair is realized through limitation in three directions.
In implementation, as shown in fig. 13 and 14, there are two cross beams 52, two cross beams 52 are parallel to each other, and each cross beam 52 is provided with a cross beam longitudinal mounting seat 521;
a motor shell of the permanent magnet direct drive motor is provided with a motor longitudinal mounting seat 437;
the bogie further comprises an intermediate longitudinal link 73; two ends of the middle longitudinal connecting rod 73 are respectively connected with the transverse beam longitudinal mounting seat 521 and the motor longitudinal mounting seat 437, so that the permanent magnet direct drive motor and the framework are longitudinally connected.
Therefore, the longitudinal connection between the permanent magnet direct drive motor and the framework is conveniently realized.
In practice, as shown in fig. 1, 2, 17, the bogie further comprises a traction device 81 and a transverse damper 82; the traction device 81 is arranged between the two cross beams 52, and the two sides of the traction device are provided with a transverse damper seat 811 at the traction device;
the middle position of the connecting part is provided with a connecting part transverse damper seat 515, and two ends of the transverse damper 82 are respectively connected with the traction device transverse damper seat 811 and the connecting part transverse damper seat 515, so that the transverse damping of the traction device is realized.
In this way, the damping of the traction device in the transverse direction is achieved by a simple construction.
In the implementation, rubber nodes are respectively arranged at two ends of the longitudinal connecting rod and are installed through bolts and cylindrical nuts;
wherein the longitudinal links include the middle longitudinal link and the side longitudinal links.
The rubber node can buffer vibration and curvilinear motion caused by unevenness of a part of the track.
Specifically, the distance between two axles of the bogie is 1600 mm.
The bogie adopts a small wheelbase of 1600 mm, and the longitudinal direction is minimized, so that the whole structure of the framework is smaller, the mass of the framework is lower, and the trend of light weight development of the framework and the bogie is met.
EXAMPLE III
The embodiment of the application provides a railway vehicle, which comprises the bogie of the second embodiment.
In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
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 (20)
1. A motor end cover for a bogie is characterized in that the motor end cover is provided with an end cover shaft hole which penetrates through the motor end cover, and an axle of the bogie penetrates through the end cover shaft hole;
the outer side of the motor end cover is provided with a motor end cover flanging, the motor end cover flanging is provided with a motor end cover bolt hole, and the motor end cover bolt hole is used for being fixed with a wheel pair axle box of the bogie;
the inner side of the motor end cover is used for being fixed with a motor shell of a permanent magnet direct drive motor of the bogie;
wherein the bogie further comprises:
the wheel set, the axle box of the wheel set and the bearing for the axle box, wherein two bearings for the axle box are arranged between two wheels of the wheel set on an axle of the wheel set, the inner ring of the bearing for the axle box is fixedly sleeved on the axle, and the axle box of the wheel set is sleeved on the outer ring of the bearing for the axle box;
the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator; the rotor is fixed on the axle, and the stator and the motor shell are fixed into a whole and sleeved outside the rotor; the axle penetrates through the end cover axle hole, the motor end cover is positioned between the motor shell and the wheel set axle box, and the motor end cover positioned on the same side is fixed with the wheel set axle box;
the motor end cover includes:
an end cap body through which the end cap shaft bore passes;
the hole wall of the end cover shaft hole protrudes from the outer side of the end cover main body, the outer side of the protruding part is provided with the motor end cover flanging, and the motor end cover bolt hole is used for realizing detachable bolt connection with the axle box bolt hole of the wheel pair axle box;
the wheel-set axle box is provided with an axle box through hole which is used for being sleeved on an outer ring of the bearing for the axle box; the outer side of the axle box through hole is convexly provided with an axle box flanging, and the axle box flanging is provided with an axle box bolt hole; the motor end cover and the wheel set axle box are fixed through bolts and nuts, and bolt holes of the motor end cover and bolt holes of the axle box.
2. The motor end cover according to claim 1, wherein the hole wall of the end cover shaft hole protrudes from the motor end cover flange to serve as a butting protrusion, and the butting protrusion is used for being in butting fit with a butting groove of the wheel-set axle box;
the butt joint protrusion and the butt joint groove are in butt joint to achieve alignment of the motor end cover and the wheel-pair axle box.
3. The motor end cap of claim 2, further comprising:
the buckle is in a closed shape connected end to end; the buckle is arranged on the inner side of the motor end cover and is used for being matched with clamping grooves on two end faces of a motor shell of the permanent magnet direct drive motor in a clamping mode;
the end cover main body is provided with an end cover main body threaded hole which is used for being matched with a motor shell threaded hole of the motor shell;
the two end faces of the motor shell are respectively provided with the clamping grooves, so that the motor end cover and the motor shell are installed in a clamping and matching mode through the clamping buckles and the clamping grooves; the end cover main body threaded hole, motor housing threaded hole and bolt cooperation realize motor end cover with motor housing's fixed connection.
4. The motor end cover of claim 3, wherein the motor end cover flange has four lugs, and the four lugs of the motor end cover flange are located at four vertices of a rectangular frame;
the number of the motor end cover bolt holes is four, the motor end cover bolt holes are respectively positioned at four lugs of the motor end cover flanging, and the motor end cover threaded holes are used for being matched with the axle box bolt holes to realize detachable bolt connection;
the pedestal flange is provided with four lugs, and the four lugs of the pedestal flange are positioned at four top points of the rectangular frame; the number of the axle box bolt holes is four, and the four axle box bolt holes are respectively located at four lugs of the axle box flanging.
5. The motor end cap of claim 4, wherein the end cap body is a flat cone-funnel shaped end cap body;
the motor end cover flanging is arranged at the conical funnel mouth part of the end cover main body, and the buckle is arranged at the edge position of the conical funnel cylindrical structure of the end cover main body.
6. The motor end cover of claim 5, wherein the end cover body is a conical funnel shaped end cover body having a top and bottom edge cut parallel to reduce weight and avoid other components of the truck.
7. The motor end cover according to claim 6, wherein the end cover main body is provided with sealing ring mounting grooves in a closed shape in an end-to-end connection at a position on the periphery of the end cover shaft hole;
the bogie further comprises a sealing ring, wherein the sealing ring is arranged in the sealing ring mounting groove to realize sealing between the end cover main body and the wheelset axle box.
8. The motor end cover according to claim 7, wherein the end cover shaft hole is located at a middle position of the motor end cover;
the sealing ring mounting groove is an annular sealing ring mounting groove;
the clamping groove is an annular clamping groove, and the buckle is an annular buckle.
9. A bogie, comprising:
a motor end cap according to any one of claims 1 to 8;
the wheel set, the axle box of the wheel set and the axle box are used as bearings, two bearings for the axle box are arranged between two wheels of the wheel set on an axle of the same wheel set, the inner ring of each bearing for the axle box is fixedly sleeved on the axle, and the axle box of the wheel set is sleeved on the outer ring of each bearing for the axle box; the bearing for the axle box is a rolling bearing;
the permanent magnet direct drive motor is arranged between the two wheel set axle boxes and comprises a motor shell, a rotor and a stator;
the rotor is fixedly sleeved on the outer peripheral surface of the axle, the stator and the motor shell are fixed into a whole and sleeved on the outer side of the rotor, the motor shell and the axle box of the wheel pair are fixed into a whole, and the bearing for the axle box is reused as a bearing for supporting the stator.
10. The bogie of claim 9, wherein the motor housing is a cylindrical motor housing;
the number of the motor end covers is two, the two motor end covers are respectively fixed at two ends of the motor shell, and the axle penetrates through the axle holes of the two end covers and the hollow part of the motor shell;
the motor end cover and the wheel pair axle box which are positioned on the same side are fixed, and the motor end cover is reused as the end cover of the wheel pair axle box.
11. The bogie according to claim 10, wherein two wheels fixed to the same axle are symmetrically arranged;
the wheels and the axle are in interference fit;
the inner ring of the bearing for the axle box is in interference fit with the axle;
and the rotor and the axle are in interference fit.
12. The bogie of claim 11, further comprising a frame and a primary suspension device; the frame includes:
the side beam comprises two primary mounting parts and a connecting part for connecting the two primary mounting parts; the connecting parts of the two side beams are oppositely sunken in the transverse direction;
a cross member connecting the connecting portions of the two side members;
wherein the primary suspension unit is mounted on the wheelset axle boxes, a primary mounting portion of the side beam is located on the primary suspension unit, and the frame is located on both of the wheelsets.
13. The bogie of claim 12, further comprising two secondary air springs;
the framework further comprises two secondary mounting seats, the two secondary mounting seats are respectively fixed on the outer sides of the middle positions of the connecting parts of the two side beams and protrude out of the two ends of the side beams in the transverse direction;
and the two secondary air springs are arranged on the two secondary mounting seats.
14. The truck of claim 13 further comprising a tread brake;
the frame further comprises two brake device mounting seats, wherein the two brake device mounting seats are fixed at the bottom of the middle position of the connecting part of each side beam and are respectively positioned at two sides of the secondary mounting seat;
wherein the tread brake device is mounted at the brake device mounting seat.
15. The bogie of claim 14, wherein the primary suspension device comprises a spring;
the outer top of the wheel set axle box is provided with two axle box primary mounting interfaces at intervals along the longitudinal direction;
the inner top of the first series of mounting parts of the side beams is provided with two first series of mounting interfaces of the side beams at intervals along the longitudinal direction;
every two of the primary springs are respectively installed with a primary installation interface of two axle boxes of the same wheel pair axle box, and two side beam primary installation interfaces of the primary installation part are located on the two primary springs.
16. The bogie of claim 15, wherein the bottom of the connecting portion of the side beam is provided with two side beam longitudinal mounts;
the wheel set axle box is provided with an axle box longitudinal mounting seat;
the bogie further comprises side longitudinal connecting rods, and two ends of each side longitudinal connecting rod are respectively connected with the longitudinal mounting seat at the axle box and the longitudinal mounting seat at the side beam, so that longitudinal connection of the wheel pair axle box and the framework is realized.
17. The bogie as recited in claim 16, wherein the ends of the side beams have downward bends;
the wheel set axle box is provided with an axle box vertical mounting seat;
the bogie further comprises a vertical lifting crane, wherein the upper end and the lower end of the vertical lifting crane are respectively connected with the inner side of the bending part and the vertical mounting seat at the axle box, so that the wheel pair axle box and the framework are vertically connected.
18. The bogie according to claim 17 wherein there are two of said cross beams, two of said cross beams being parallel to each other, each of said cross beams being provided with a cross beam longitudinal mount;
a motor shell of the permanent magnet direct drive motor is provided with a motor longitudinal mounting seat;
the bogie further comprises an intermediate longitudinal link; and two ends of the middle longitudinal connecting rod are respectively connected with the longitudinal mounting seat at the cross beam and the longitudinal mounting seat at the motor, so that the longitudinal connection between the permanent magnet direct drive motor and the framework is realized.
19. The truck of claim 18 further comprising a traction device and a transverse damper; the traction device is arranged between the two beams, and the two sides of the traction device are provided with the transverse shock absorber seats at the traction device;
the middle position of the connecting part is provided with a transverse shock absorber seat at the connecting part, and two ends of the transverse shock absorber are respectively connected with the transverse shock absorber seat at the traction device and the transverse shock absorber seat at the connecting part, so that the shock absorption of the traction device in the transverse direction is realized.
20. A rail vehicle comprising a bogie as claimed in any one of claims 9 to 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010574346.8A CN111703441B (en) | 2020-06-22 | 2020-06-22 | A motor end cover, bogie and rail vehicle for bogie |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010574346.8A CN111703441B (en) | 2020-06-22 | 2020-06-22 | A motor end cover, bogie and rail vehicle for bogie |
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| CN111703441A CN111703441A (en) | 2020-09-25 |
| CN111703441B true CN111703441B (en) | 2021-07-30 |
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| CN202010574346.8A Active CN111703441B (en) | 2020-06-22 | 2020-06-22 | A motor end cover, bogie and rail vehicle for bogie |
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| CN114248815A (en) * | 2022-01-17 | 2022-03-29 | 西南交通大学 | Railway vehicle bogie adopting double-shaft box suspension and permanent magnet direct drive motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435999A (en) * | 2018-11-13 | 2019-03-08 | 中车长春轨道客车股份有限公司 | A kind of traction electric machine directly drives the wheel of axle to component devices |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3746349B2 (en) * | 1997-02-05 | 2006-02-15 | 富士重工業株式会社 | Axle support structure for railcar bogie |
| CN104527661B (en) * | 2014-12-15 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of steering framing wheel is to drive system and the bogie using the system |
| CN107264565A (en) * | 2017-06-15 | 2017-10-20 | 中车唐山机车车辆有限公司 | Power truck and rail vehicle |
| CN107947445A (en) * | 2017-12-21 | 2018-04-20 | 舍弗勒技术股份两合公司 | Shaft end generator assembly, shaft end generator, the bogie of car and its assemble method |
| CN110311510B (en) * | 2018-03-27 | 2020-06-12 | 中车株洲电力机车研究所有限公司 | Shaft end power generation structure of railway vehicle |
| CN209738692U (en) * | 2018-12-20 | 2019-12-06 | 中车唐山机车车辆有限公司 | Wheel pair, bogie and rail vehicle |
| CN110641503A (en) * | 2019-10-17 | 2020-01-03 | 西南交通大学 | Novel bogie |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435999A (en) * | 2018-11-13 | 2019-03-08 | 中车长春轨道客车股份有限公司 | A kind of traction electric machine directly drives the wheel of axle to component devices |
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