CN113335329A

CN113335329A - Built-in permanent magnetism of axle box directly drives bogie

Info

Publication number: CN113335329A
Application number: CN202110680087.1A
Authority: CN
Inventors: 马光同; 徐帅; 任冠州; 孙振耀
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-09-03

Abstract

The invention discloses a permanent magnet direct-drive bogie with a built-in axle box, and particularly relates to the field of railway vehicle bogies. A permanent magnetic direct-drive bogie with a built-in axle box comprises an H-shaped framework device, wherein the framework device comprises a pair of side frames arranged in parallel and a pair of cross frames arranged on the inner sides of the side frames in parallel; a traction pull rod is arranged between the cross frames, the bottom of the side frame is provided with an axle box device, and the middle part of the side frame is provided with a secondary suspension device; wheels are respectively arranged at the front end and the rear end of the side frame, an axle is arranged between the wheels, a hollow coupling is sleeved at the middle section of the axle, axle box devices are respectively sleeved at the positions of the axle close to the two ends of the hollow coupling, the hollow coupling is fixedly connected with the axle, and the axle box devices are rotatably connected with the axle; the permanent magnet motor is sleeved outside the hollow coupler and connected with the permanent magnet motor, and the permanent magnet motor is fixedly connected with the framework device. The invention has the advantages of compact structure and light self weight, and simultaneously ensures that the train has good stability and shock absorption effect.

Description

Built-in permanent magnetism of axle box directly drives bogie

Technical Field

The invention relates to the technical field of railway vehicle bogies, in particular to a permanent magnet direct-drive bogie with an internal axle box.

Background

With the urban road traffic conditions getting worse, the urban rail transit system is a first choice of governments, and not only is the environment damaged, but also a large amount of land area is occupied. The urban rail transit system not only occupies a small area, but also has the advantages of relatively small pollution and influence on the environment, large passenger carrying capacity and the like. In the urban rail transit system, the direction of train change is realized by the mutual cooperation of a rail and a bogie positioned at the lower end of the train, the train is turned, meanwhile, wheels positioned on the rail are responsible for adjusting the shape-walking distance of the wheels at the inner side and the outer side, and the structure can ensure that the train smoothly passes through a curve with a long outer rail and a short inner rail.

In the running process of a train, the steering is mainly realized by matching a primary suspension device and a secondary suspension device of a bogie, the primary suspension system is an axle box suspension device between wheels and a frame and plays a role in transmitting force between an axle box and the wheels and positioning, the secondary suspension system is a suspension device between a connecting frame and a train body, and an air spring and various shock absorbers of the secondary suspension system can reduce vibration caused by the unsmooth steel rails. When the train turns, the two suspension systems are mutually matched, so that the vibration sense of the train body in running is reduced, the two suspension systems can still keep the train body stable even if the train passes through a curve at a high speed, and the comfort is improved while the safety of passengers is ensured.

Wheel actuating system is the power source spring that the traction train gos forward, traditional train motor elasticity or rigid mounting are on the framework, and adopt gear drive, this kind of drive mode needs complicated shaft coupling and gear box structure, can occupy a large amount of framework structure's space, influence bogie transmission efficiency, reduce the little curve trafficability characteristic of bogie, and be difficult to guarantee the train to the not smooth and easy nature of track circuit, the cost of making and overhauing has been increased simultaneously, it also is difficult to obtain the assurance with sealed to use the back lubrication for a long time, can cause adverse effect to the environment.

In the structure of bogie among the prior art, can't guarantee that bogie dead weight and shock attenuation performance and train operation's stationarity have concurrently simultaneously.

Disclosure of Invention

The invention aims to provide a permanent magnetic direct-drive bogie with a built-in axle box, which aims to solve the problems of poor running stability of the existing vehicle and heavy self weight of the bogie.

The technical scheme for solving the technical problems is as follows:

the utility model provides a built-in permanent magnetism of axle box directly drives bogie which characterized in that includes: the framework device is integrally H-shaped and comprises a pair of side frames arranged in parallel and a pair of cross frames arranged on the inner sides of the side frames in parallel; a traction pull rod is arranged between the cross frames, the bottom of the side frame is provided with an axle box device, and the middle part of the side frame is provided with a secondary suspension device; wheels are respectively arranged at the front end and the rear end of the side frame, an axle is arranged between the wheels, a hollow coupling is sleeved at the middle section of the axle, axle box devices are respectively sleeved at the positions of the axle close to the two ends of the hollow coupling, the hollow coupling is fixedly connected with the axle, and the axle box devices are rotatably connected with the axle; the permanent magnet motor is sleeved outside the hollow coupler and connected with the permanent magnet motor, and the permanent magnet motor is fixedly connected with the framework device.

The beneficial effects of adopting the above technical scheme are: by replacing the complex motor structure of the traditional wheel driving system with a permanent magnet synchronous traction motor, the structure of the frame can be simple and compact, and the overall weight of the bogie can be reduced. The frame device is arranged into two pairs of side frames and cross frames which are respectively parallel to each other, the side frames and the cross frames are welded, and the whole frame is in an H-shaped structure, so that the structure of the bogie is compact and simplified, the effect of reducing the dead weight of the bogie is achieved, and the H-shaped frame device is convenient for mounting a system device such as a wheel, an axle box device, an axle, a secondary suspension device and the like. By arranging the axle box device on the inner side of the wheel, the axle of the train is shortened due to the adoption of the inner support mode, and meanwhile, the structure of the frame is further compact, so that the self weight of the bogie is further reduced; the hollow coupler is sleeved at the middle section of the axle, and the permanent magnet motor is sleeved outside the hollow coupler, so that a gear box and a coupler part are omitted, and the whole space of the bogie is greatly simplified and compressed; the axle is sleeved with the hollow coupling fixing sleeve, the permanent magnet motor is sleeved outside the hollow coupling, the permanent magnet motor is connected with the hollow coupling, the power of the motor is conveniently transmitted to the axle along the hollow coupling, the train is driven to run on the track, the secondary suspension device arranged in the middle of the side frame connects the train body and the framework device, the vibration caused by the unsmooth steel rail can be reduced, the train can still keep the train body stable when passing through a curve at a high speed, and the comfort of the train can be improved while the safety of passengers is guaranteed.

Furthermore, the hollow coupling comprises a hollow shaft, the hollow shaft comprises a connecting end and an output end, and the permanent magnet motor is sleeved in the middle of the hollow shaft;

the connecting end is sleeved with a connecting end transmission part and a connecting end flange plate, the connecting end transmission part is positioned between the connecting end flange plate and the permanent magnet motor, and the connecting end flange plate is fixedly connected with the hollow shaft and the connecting end transmission part respectively; one end of the connecting end transmission piece close to the permanent magnet motor is provided with first end face teeth, and the first end face teeth are connected with the permanent magnet motor.

The beneficial effects of adopting the above technical scheme are: rotate through link driving medium and permanent-magnet machine and be connected, the link ring flange is respectively with hollow shaft and link driving medium fixed connection simultaneously, is convenient for transmit permanent-magnet machine's power to the hollow shaft on, and then drives the axletree and rotate.

Further, the permanent magnet motor comprises a stator, a rotor and an output shaft, the rotor is sleeved on the hollow shaft, the stator is sleeved on the rotor, the output shaft is arranged in the extending direction of the rotor, and one end, far away from the rotor, of the output shaft is meshed with the first end face teeth.

The beneficial effects of adopting the above technical scheme are: : through establishing permanent-magnet machine's rotor cover on the hollow shaft, the stator cover is established on the rotor, and output shaft one end is the terminal surface tooth structure to with first terminal surface tooth meshing, be convenient for with permanent-magnet machine's power transmission to the hollow shaft coupling on, and then transmit to the axletree on, it is rotatory to drive the wheel, provides power for the train motion, makes power transmission system more effective, makes bogie overall structure more compact simultaneously, and the dead weight is lighter.

Furthermore, a pair of parallel mounting columns are respectively arranged at two ends of the framework device, two ends of each mounting column are respectively fixedly connected with the side frames, and the shell of the permanent magnet motor is fixedly connected to the middle of each mounting column.

The beneficial effects of adopting the above technical scheme are: the mounting columns are arranged at the two ends of the framework device, and the two ends of the mounting columns are fixedly connected with the side frames, so that the structure of the framework device can be further stabilized, and the rigidity of the framework device is improved; through with permanent-magnet machine's shell fixed mounting on the erection column, make permanent-magnet machine can output power on the axletree steadily.

Furthermore, a connecting end transmission disc is sleeved between the connecting end transmission part and the connecting end flange disc; the connecting end transmission disc is fixedly connected with the connecting end transmission part and the connecting end flange disc respectively.

The beneficial effects of adopting the above technical scheme are: the transmission disc is connected through sleeving between the connecting end transmission part and the connecting end flange disc, so that the influence on the connecting end transmission part and the connecting end flange disc is directly caused due to the effects of vibration and impact in the process of train movement.

Furthermore, the output end is sleeved with an active end flange plate and a force transmission flange,

the driving end flange plate is meshed with the output end through teeth, the driving end flange plate is fixedly connected with the force transmission flange, and the force transmission flange is sleeved on the axle and is fixedly connected with the axle.

The beneficial effects of adopting the above technical scheme are: through the drive end ring flange and the hollow shaft that establish at output end cover keep away from the one end fixed connection of link ring flange, be convenient for transmit permanent-magnet machine's power to the output, and then drive the axletree rotation.

Furthermore, an output end transmission disc is further sleeved between the driving end flange plate and the force transmission flange, and the output end transmission disc is fixedly connected with the driving end flange plate and the force transmission flange respectively.

The beneficial effects of adopting the above technical scheme are: the output end force transmission disc is arranged between the driving end flange disc and the force transmission flange, so that the permanent magnet motor, the driving end flange disc and the force transmission flange are prevented from being directly influenced by vibration and impact of a vehicle body in the process of power transmission.

Furthermore, the axle box device comprises a box body and a rotating arm, the box body is sleeved on the axle through a bearing, the box body is connected with the side frames through elastic supporting devices, meanwhile, vertical shock absorbers are arranged between the box body and the side frames, the rotating arm is arranged on one side, close to the rail, of the side frames, and two ends of the rotating arm are hinged to the side frames and the box body respectively.

The beneficial effects of adopting the above technical scheme are: the axle box device is arranged on the inner side of the framework device, and the axle of the train is shortened due to the adoption of the inner support mode, so that the structure of the framework is further compact, and the effect of reducing the self weight of the bogie is achieved; the elastic supporting device arranged between the box body and the side frame can reduce the influence of vibration on the vehicle body; the vertical shock absorber and the rotating arm arranged between the box body and the side frame can further reduce the shock caused by the steel rail, so that the train is more stable in the running process, and the riding comfort of passengers is improved.

Further, the secondary suspension device comprises an air spring, a horizontal shock absorber, a vertical shock absorber and an anti-snake-shaped shock absorber;

the air spring is arranged in the middle of the side frames, the vertical shock absorber is arranged on the outer side of the middle of the side frames, the anti-snake-shaped shock absorber is arranged on the outer side of the side frames along the motion direction of a train, and the horizontal shock absorber is fixedly arranged between the side frames and is parallel to the cross frame;

the air spring, the vertical shock absorber, the snake-shaped resistant shock absorber and the horizontal shock absorber are respectively connected with the side frame and the railway vehicle.

The beneficial effects of adopting the above technical scheme are: the vibration sense of the train in the vertical direction can be relieved by the air spring arranged in the middle of the side frame and the upper end of the air spring is connected with the rail train, and meanwhile, the vibration of the train in the vertical direction can be further relieved by the vertical direction shock absorber arranged on the outer side of the middle part of the side frame, so that the train is in a stable state in the running process; and the horizontal direction shock absorber that sets up along the crossbearer axis direction between the side bearer and set up the anti snakelike shock absorber of the direction of advancing along the train in the middle part outside of side bearer, can make the train in the in-process of turning, make the train automobile body be in steady state, improve the travelling comfort of train when guaranteeing passenger's safety.

The invention has the following beneficial effects:

1. the invention has compact structure and light self weight, and simultaneously has good stability and shock absorption effect in the running process of the train.

2. The axle box device is arranged on the axle in a built-in mode, and the two ends of the axle box are penetrated through by the axle, so that the length of the axle is greatly reduced, the structure of the bogie is more compact, the dead weight of the bogie can be effectively reduced, the curve passing performance of a train is improved, and the acting force of wheel rail movement is improved.

3. The permanent magnet motor is mounted on the axle in a shaft-hung manner, and complex transmission mechanisms such as a gear box, a coupling and the like are omitted, so that the weight of the whole bogie is further reduced, and the motor has higher transmission efficiency, is energy-saving and environment-friendly.

4. The hollow coupling is sleeved on the axle and connected with the permanent magnet motor, so that the transmission efficiency of the motor is higher, the overall structure of the bogie is more compact, and the self weight of the bogie is further reduced.

5. The shock absorbers in different directions are arranged at different positions, so that impact feeling caused by the change of the steel rail and vibration feeling generated when a train turns can be effectively relieved, the stability of a train body in the running process of the train is ensured, and the comfort is improved while the safety of passengers is ensured.

Drawings

FIG. 1 is a schematic perspective view of a truck according to the present invention;

FIG. 2 is a schematic top view of the truck of the present invention;

FIG. 3 is a schematic structural view of a frame assembly of the present invention;

FIG. 4 is a schematic structural view of a dual drag link assembly of the present invention;

FIG. 5 is a schematic view of the construction of the axlebox arrangement of the present invention;

FIG. 6 is a schematic structural diagram of a permanent magnet motor according to the present invention;

FIG. 7 is a schematic view of the wheel construction of the present invention;

FIG. 8 is a schematic view of the hollow coupling of the present invention;

FIG. 9 is a schematic view of the output flange structure of the present invention;

FIG. 10 is a schematic view of the present invention showing the construction of the link/output end driving plate;

FIG. 11 is a schematic view of a hollow shaft according to the present invention;

FIG. 12 is a schematic view of the active end flange structure of the present invention;

fig. 13 is a schematic view of the force transfer flange of the present invention.

In the figure: 1-a frame device; 2-axle box arrangements; 3-vehicle wheels; 4-axle shaft; 5-a hollow coupling; 6-permanent magnet motor; 7-secondary suspension device; 8-a dual drag link assembly; 9-a braking device; 10-mounting a column; 11-sideframe; 12, a transverse frame; 21-a box body; 22-a tumbler; 71-air springs; 72-horizontal direction shock absorber; 73-vertical direction shock absorber; 74-anti-snake shock absorber; 75-resilient support means; 81-a traction swivel; 82-a traction pull rod; 83-a tie rod support; 50-connecting hole; 51-a connecting end transmission; 52-connecting end transmission disc; 53-hollow shaft; 54-driving end flange plate; 55-a force transfer flange; 56-output end transmission disc; 511-a first flange; 5111 a first via; 512-first end face teeth; 431 a second flange; 4311-second via; 532-second face teeth; 541-a third flange; 5411-third via; 551-fourth flange; 5511-a fourth via; 61-a stator; 62-a rotor; 63-an output shaft; 41-a connection end; 42-an output terminal; 43-connecting end flange.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1 to 6, the axle box built-in permanent magnet direct drive bogie comprises a framework device 1, wheels 3 positioned at two sides of the framework device 1, a hollow coupling 5 positioned at the inner side of the framework device 1, a permanent magnet motor 6 positioned at the outer part of the hollow coupling 5, an axle box device 2 positioned at the bottom of the framework device 1, a secondary suspension device 7 positioned at the middle position of the framework device 1, and a brake device 9 connecting the wheels 3 and the framework device 1; the framework device 1 comprises a pair of parallel side frames 11, a pair of parallel cross frames 12 and a pair of parallel mounting columns 10, wherein the cross frames 12 are arranged in the middle positions of the side frames 11 and are vertically and fixedly connected with the side frames 11, so that the integral framework device 1 is in an H-shaped structure, the mounting columns 10 are arranged between the two side frames 11, are parallel to the cross frames 12 and are arranged on the outer sides of the cross frames 12 and are fixedly connected with the side frames 11, enough supporting force is provided for the side frames 11, the integral rigidity of the framework device 1 is improved, a certain bearing effect is provided for the mounting of the permanent magnet motor 6 by the mounting columns 10, the integral structure of the framework device 1 is set to be in an H-shaped structure, the cross frames 12 and the mounting columns 10 are respectively and vertically and fixedly connected with the side frames 11, the framework device 1 is more compact, and the mounting connection of other devices of a bogie is facilitated.

The side frame 11 is of an arched structure, and the cross frame 12 is fixedly arranged at the arched bottom of the side frame 11 in parallel, so that the whole framework device 1 is of an H-shaped structure, the stability of the framework device 1 is improved, the self weight of the framework device 1 is reduced, and the self weight of the bogie is further reduced; the installation columns 10 are arranged at the corners of the two arched ends of the side frame 11, the installation columns 10 are parallel to the cross frame 12 located in the middle of the side frame 11, and meanwhile, the installation columns 10 are fixedly connected with the side frame 11, so that the structural stability of the H-shaped framework device 1 is further improved, and the self weight of the framework device 1 is reduced.

The middle position of the arched side frame 11 is connected with a secondary suspension device 7, and the secondary suspension device 7 comprises an air spring 71, a horizontal shock absorber 72, a vertical shock absorber 73 and an anti-snake-shaped shock absorber 74; the air spring 71 is arranged in the middle of the arched side frame 11, the top end of the air spring 71 is connected with a train body, and the air spring 71 arranged between the train body and the arched side frame 11 can relieve the vibration feeling caused by the unsmooth steel rail; the vertical shock absorbers 73 arranged at the outer side of the middle part of the arched side frame 11 can further reduce the vibration sense of the train in the vertical direction in the running process, thereby ensuring the running stability of the train; the anti-snake-shaped shock absorber 74 is arranged on the outer side of the middle of the arched side frame 11, specifically arranged below the air spring 71 and fixedly connected with the arched side frame 11, the other end of the anti-snake-shaped shock absorber 74 is connected with a vehicle body in the horizontal direction, the horizontal shock absorber 72 is arranged on the inner side of the arched side frame 11 and fixedly connected with the side frame 11, meanwhile, the horizontal shock absorber 72 is parallel to the cross frame 12 located in the middle of the side frame, the horizontal shock absorber 72 arranged on the inner side of the arched side frame 11 and the anti-snake-shaped shock absorber 74 located on the outer side of the arched side frame 11 can ensure that the vehicle body can still keep stable when a train passes through a curve at high speed, and the riding comfort of passengers is improved.

The two ends of the arc side frame 11 are respectively connected with the axle box device 2 through the elastic supporting device 75, the axle box device 2 comprises a box body 21 and a rotating arm 22, the box body 21 is connected with the end part of the side frame 11 through the elastic supporting device 75, and the elastic supporting device 75 connected between the side frame 11 and the axle body 21 can be matched with the secondary suspension device 7 to reduce the vibration feeling caused by the unsmooth steel rails. The box body 21 is sleeved on the axle 4 through a bearing, the rotating arm 22 is arranged on the lower side of the side frame 11, two ends of the rotating arm 22 are respectively connected with the box body 21 and the side frame 11, meanwhile, a vertical direction shock absorber 73 is arranged on one side, away from the rotating arm 22, of the box body 21, two ends of the vertical direction shock absorber 73 are respectively connected with the end part of the side frame 11 and the box body 21, an elastic supporting device 75 arranged on the end part of the side frame 11, and a shock absorption device consisting of the vertical direction shock absorber 73 and the rotating arm 22 form a primary suspension device, so that the shock absorption effect of a part of the primary suspension device is realized, and the effect of; meanwhile, the axle box device 2 is installed on the axle 4 in a built-in mode, and the two ends of the axle box device 2 are penetrated through by the axle 4, so that the length of the axle is greatly reduced, the structure of the bogie is more compact, the dead weight of the bogie can be effectively reduced, the curve passing performance of a train is improved, and the acting force of wheel track movement is improved.

The double-traction pull rod assembly 8 is fixedly mounted on the cross frame 12, the double-traction pull rod assembly 8 comprises a traction rotator 81, a traction pull rod 82 and a pull rod support 83, two sides of the traction rotator 81 are respectively connected with one end of the traction pull rod 82, the other end of the traction pull rod 82 is connected onto the cross rod 12 through the pull rod support 83, the vehicle body and the bogie can be connected in a joint mode in the longitudinal direction through the double-traction pull rod assembly 8 arranged between the cross frames 12, the traction force is convenient to transmit, various impact forces of the vehicle body and the bogie are offset, the shock absorption effect is good, and the good stability of the train in the advancing process can be further guaranteed.

The permanent magnet motor 6 is arranged between the two arched side frames 11, specifically between the axle box devices 2 on the inner sides of the two arched side frames 11, and is sleeved outside the hollow coupler 5, the permanent magnet motor 6 transmits power to the hollow coupler 5, and then the axle 4 is driven to rotate, so that the train is driven to move. The permanent magnet motor 6 comprises a stator 61, a rotor 62 and an output shaft 63, wherein the rotor 62 is sleeved on the hollow coupler 5, the stator 61 is sleeved on the rotor 62, the output shaft 63 is fixedly connected with the hollow coupler 5, so that the power of the permanent magnet motor 6 is conveniently transmitted to the other end of the axle 4 along the hollow coupler 5, and the wheels on two sides of the side frame 11 can be synchronously driven; meanwhile, the permanent magnet motor 6 is mounted on the axle 4 in a shaft-encircling manner, and complex transmission mechanisms such as a gear box, a coupling and the like are omitted, so that the weight of the whole bogie is further reduced, and the motor has higher transmission efficiency, is energy-saving and environment-friendly.

Referring to fig. 8 to 13, the hollow coupling 5 is sleeved on the axle 4, and the hollow coupling 5 is fixedly connected with the axle 4, and the hollow coupling 5 includes an output end flange 51, a connecting end transmission disc 52, a hollow shaft 53, a driving end flange 54, an output end transmission disc 56, and a force transmission flange 55. The circumference of the connecting end/output end transmission disc is provided with 8 uniformly distributed connecting holes 50, one end of the output end flange disc 51 is provided with first end face teeth 512, and the first end face teeth 512 are meshed with the output shaft 63 of the permanent magnet motor 6 through end face teeth, so that the permanent magnet motor 6 is conveniently connected with the hollow coupling 5, power is transmitted, complex transmission structures such as a gear box and a coupling are omitted, the structure of the bogie is simplified, and the dead weight is reduced; the other end of the output end flange 51 is provided with 4 first flanges 511 extending radially outwards, the 4 first flanges 511 are uniformly distributed on the end face of the output end flange 51, meanwhile, each first flange 511 is provided with a first through hole 5111, the first through hole 5111 is connected with the connecting hole 50 of the connecting end transmission disc 52 through a pin, the remaining 4 connecting holes 50 of the connecting end transmission disc 52 are connected with the hollow shaft 53, one end of the hollow shaft 53 is provided with second end face teeth 532, the other end of the hollow shaft 53 is provided with 4 second flanges 431 extending radially outwards and uniformly distributed, each second flange 431 is provided with a second through hole 4311, and the second through holes 4311 are connected with the remaining 4 connecting holes 50 of the connecting end transmission disc 52 through pins. One end of the driving end flange plate 54 is provided with end face teeth meshed with the second end face teeth 532 of the hollow shaft 53, the other end of the driving end flange plate 54 is provided with 4 third flanges 541 which radially extend outwards and are circumferentially uniform, each third flange 541 is provided with a third through hole 5411, and the third through holes 5411 are connected with the connecting holes 50 of the output end transmission disc 56 through pins. The remaining 4 connecting holes 50 of the output end transmission disc 56 are connected with the force transmission flange 55, the force transmission flange 55 radially and outwards extends to form 4 fourth flanges 551 which are uniformly distributed in the circumferential direction, each fourth flange 551 is provided with a fourth through hole 5511 and is connected with the remaining 4 connecting holes 50 of the output end transmission disc 56 through pins, and the force transmission flange 55 is sleeved on the axle 4 in an interference fit mode, so that the force transmission flange 55 is fixedly connected with the axle 4. The power transmission system consisting of the motor output shaft 63, the output end flange 51, the hollow shaft 53, the driving end flange 54 and the power transmission flange 55 can efficiently transmit the power of the permanent magnet motor 6 to the axle 4, and simultaneously, traditional complex transmission mechanisms such as a gear box, a coupling and the like are eliminated, so that the framework of the whole bogie is more compact, and the dead weight is reduced.

Referring to fig. 7, the wheel 3 includes a driving wheel 31 and a braking wheel 32, the driving wheel 31 is disposed on the outer side of the axle 4 near the arcuate side frame 11, the braking wheel 32 is disposed coaxially with the axle 4 on the side away from the driving wheel 31, and the braking device 9 is disposed between the braking wheel 32 and the arcuate side frame 11. By arranging the braking device 9 on the braking wheel 32 of the wheel 3 and applying the braking force on the braking wheel 32, the abrasion of the driving wheel 31 is avoided and the service life is not influenced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a built-in permanent magnetism of axle box directly drives bogie which characterized in that includes: the integral H-shaped framework device (1) comprises a pair of side frames (11) arranged in parallel and a pair of cross frames (12) arranged on the inner sides of the side frames (11) in parallel; a traction pull rod (8) is arranged between the cross frames (12), the bottom of each side frame (11) is provided with an axle box device (2), and the middle part of each side frame (11) is provided with a secondary suspension device (7); wheels (3) are respectively arranged at the front end and the rear end of the side frame (11), axles (4) are arranged among the wheels (3), hollow couplers (5) are sleeved at the middle sections of the axles (4), axle box devices (2) are respectively sleeved at positions, close to the two ends of the hollow couplers (5), of the axles (4), the hollow couplers (5) are fixedly connected with the axles (4), and the axle box devices (2) are rotatably connected with the axles (4); the hollow coupling (5) is externally sleeved with a permanent magnet motor (6) and connected with the permanent magnet motor (6), and the permanent magnet motor (6) is fixedly connected with the framework device (1).

2. The in-axle box permanent magnet direct drive bogie according to claim 1, characterized in that: the hollow coupling (5) comprises a hollow shaft (53), the hollow shaft (63) comprises a connecting end (41) and an output end (42), and the permanent magnet motor (6) is sleeved in the middle of the hollow shaft (53);

the connecting end (41) is sleeved with a connecting end transmission piece (51) and a connecting end flange plate (43), the connecting end transmission piece (51) is positioned between the connecting end flange plate (43) and the permanent magnet motor (6), and the connecting end flange plate (43) is fixedly connected with the hollow shaft (53) and the connecting end transmission piece (51) respectively; one end, close to the permanent magnet motor (6), of the connecting end transmission piece (51) is provided with first end face teeth (512), and the first end face teeth (512) are connected with the permanent magnet motor (6).

3. The in-axle box permanent magnet direct drive bogie according to claim 2, characterized in that: the permanent magnet motor (6) comprises a stator (61), a rotor (62) and an output shaft (63), the rotor (62) is sleeved on the hollow shaft (53), the stator (61) is sleeved on the rotor (62), the output shaft (63) is arranged in the extending direction of the rotor (62), and one end, far away from the rotor (62), of the output shaft (63) is meshed with the first end face teeth (512).

4. The in-axle box permanent magnet direct drive bogie according to claim 3, characterized in that: the frame device is characterized in that a pair of parallel mounting columns (10) are arranged at two ends of the frame device (1) respectively, two ends of each mounting column (10) are fixedly connected with the side frames (11) respectively, and a shell of the permanent magnet motor (6) is fixedly connected to the middle of each mounting column (10).

5. The in-axle box permanent magnet direct drive bogie according to claim 2, characterized in that: a connecting end transmission disc (52) is also sleeved between the connecting end transmission piece (51) and the connecting end flange disc (43); the connecting end transmission disc (52) is fixedly connected with the connecting end transmission piece (51) and the connecting end flange disc (43) respectively.

6. The in-axle box permanent magnet direct drive bogie according to claim 2, characterized in that: the output end (42) is sleeved with a driving end flange plate (54) and a force transmission flange (55),

the driving end flange plate (54) is meshed with the output end (42) through teeth, the driving end flange plate (54) is fixedly connected with the force transmission flange (55), and the force transmission flange (55) is sleeved on the axle (4) and is fixedly connected with the axle (4).

7. The in-axle box permanent magnet direct drive bogie according to claim 6, characterized in that: an output end transmission disc (56) is further sleeved between the driving end flange plate (54) and the force transmission flange (55), and the output end transmission disc (56) is fixedly connected with the driving end flange plate (54) and the force transmission flange (55) respectively.

8. The in-axle box permanent magnet direct drive bogie according to claim 1, characterized in that: axle box device (2) include box (21) and rocking arm (22), box (21) are established through the bearing housing on axletree (4), box (21) through elastic support device (75) with side bearer (11) are connected, simultaneously box (21) with all be provided with between side bearer (11) vertical direction bumper shock absorber (73), rocking arm (22) set up side bearer (11) are close to one side of rail, and the both ends of rocking arm (22) respectively with side bearer (11) with box (21) are articulated.

9. The in-axle box permanent magnet direct drive bogie according to any of claims 1 to 8, characterized in that: the secondary suspension device (7) comprises an air spring (71), a horizontal shock absorber (72), a vertical shock absorber (73) and an anti-snake-shaped shock absorber (74);

the air spring (71) is arranged in the middle of the side frames (11), the vertical direction shock absorber (73) is arranged on the outer side of the middle of the side frames (11), the anti-snake shock absorber (74) is arranged on the outer side of the side frames (11) along the moving direction of the train, and the horizontal direction shock absorber (72) is fixedly arranged between the side frames (11) and is parallel to the cross frame (12);

the air spring (71), the vertical direction shock absorber (73), the anti-snake shock absorber (74) and the horizontal direction shock absorber (72) are respectively connected with the side frame (11) and the rail vehicle.