CN218243209U

CN218243209U - Railway wagon shaft end generator device

Info

Publication number: CN218243209U
Application number: CN202221964702.8U
Authority: CN
Inventors: 周志鹏; 张贝妮; 陈方圆
Original assignee: Once Top Motor Manufacture Co ltd
Current assignee: Once Top Motor Manufacture Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-01-06
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a shaft end generator device of a railway wagon, which comprises a damping protective cover, a stator, a rotor and a damping coupler, wherein the stator comprises a connecting plug, a fixed shaft, a stator core and a stator coil; the shock absorption protective cover comprises a cover body and a shock absorption spring assembly, the shock absorption spring assembly comprises a shock absorption spring and a connecting piece, and the shock absorption spring is used for realizing shock absorption between the vehicle body and the cover body; the rotor comprises a rotor shell, an annular magnet and a rotor end cover, wherein the annular magnet is arranged on the inner wall of the rotor shell; the damping coupling comprises a damping rubber pile and an installation shell connected with an axle of a railway wagon, the damping rubber pile is installed in the installation shell to achieve damping of the installation shell, and the installation shell is fixedly connected with the rotor end cover. The utility model discloses a shock attenuation protection casing and shock attenuation shaft coupling are connected with stator and rotor respectively, when railway freight car traveles, can realize the shock attenuation to stator and rotor respectively to can make rotor and stator export electric energy steadily.

Description

Railway wagon shaft end generator device

Technical Field

The utility model belongs to the on-vehicle generator field of railway freight car, more specifically relates to a railway freight car axle head generator device.

Background

In recent years, with the rapid development of economy in China, railway transportation is developing towards high speed and heavy loading.

With the development of the railway freight car technology, in order to greatly improve the economy, reliability and safety of the railway freight car operation, the railway freight car charging control system, the fault intelligent detection device, the axle temperature detection device, the electronic anti-skid device and other devices have become the development direction of the future railway freight car.

When a railway vehicle is in operation, the vehicle may vibrate for various reasons. The vibration form is a vibration system with multiple degrees of freedom, and the exciting force acting on the system is various, so that the vibration of the railway vehicle is an extremely complex vibration process. In general, the exciting force causing the vehicle to vibrate can be classified into two types: line reasons and wheel pair reasons. These disturbances are most aggravated as the vehicle speed increases, and therefore the problem of vibrations on high-speed vehicles is significant. The line reason is mainly because the rail joint, the vertical deformation of rail and the irregularity of track etc. the wheel pair reason is mainly because wheel pair eccentricity and shaft decentration, wheel uneven weight, tread scotch and tread inclination etc. that the machining error caused to the wheel pair.

Due to the complex vibration existing during the running of the railway wagon, the vibration can affect the normal rotation of the rotor of the generator relative to the stator, so that the power generation is unstable. At present, few generators are arranged on a railway wagon to supply power, and the power supply of the railway wagon becomes a problem to be solved urgently.

At present, railway workers at home and abroad carry out a great deal of research on a railway wagon generator, for example, CN202110736985.4 discloses a pneumatic power generation device which is mainly communicated with a vehicle air passage through an input port on a bistable electromagnetic valve, a check valve and two electromagnetic valves are used for controlling the on-off of the air passage on a bistable electromagnetic valve body to supply air to a pneumatic motor, pressurized air drives the pneumatic motor to rotate, the pneumatic motor drives the generator to rotate through a quincunx coupler, and therefore the kinetic energy is converted into electric energy. Because the pneumatic motor of the pneumatic power supply device needs to supply air by a vehicle air passage, if the vibration influence of a railway wagon is large, the air supply airflow is disordered, and the pneumatic motor cannot work reliably, so that the electric wave generated is large in fluctuation and unstable in voltage.

CN201910541582.7 discloses a vibration kinetic energy recovery system based on a railway wagon, which comprises a vibration power generation module, wherein the vibration power generation module is used for collecting vibration kinetic energy generated by the running railway wagon in multiple directions and converting the collected vibration kinetic energy into electric energy. Although many researchers at home and abroad try to research various truck power generation devices and verify the reliability of the truck power generation devices through means of theoretical calculation, mechanical simulation analysis, performance trial and study and the like, few examples of actual loading operation of the power generation devices exist so far because of low power density. Therefore, how to improve the power density and reliability of the generator becomes an urgent technical problem to be solved.

CN202210180259.3 discloses a novel axle end generator for a railway wagon, which is used for generating electricity for the railway wagon, wherein the railway wagon is provided with a non-axle box bogie and an axle, and comprises a bearing saddle, a generator housing, a stator and a rotor; the first protruding part and the second protruding part realize transmission through a complementary concave-convex groove type connecting structure, the gap between the shaft end pressing plate and the rotating shaft along the axle is adapted to radial and axial jumping of the generator and the shaft end pressing plate, the problem that the shaft end generator cannot normally operate due to jumping between the bearing saddle and the axle can be solved, when a railway wagon shakes, rigid collision can be generated between the first protruding part and the second protruding part, the rotor can be stopped to influence normal rotation of the rotor, and the generator is enabled to be unstable in power generation. In addition, the stator is arranged around the rotor, so that the number of poles of the stator and the rotor is limited, and the power density is not high.

SUMMERY OF THE UTILITY MODEL

To the above defect or improvement demand of prior art, the utility model provides a railway freight car axle head generator device, its power density and the reliability that can improve the generator.

In order to achieve the above object, according to the utility model discloses an aspect provides a railway freight car axle head generator device, a serial communication port, including shock attenuation protection casing, stator, rotor and shock attenuation shaft coupling, wherein:

the stator comprises a connecting plug, a fixed shaft, a stator core and a stator coil, wherein one end of the fixed shaft is provided with the connecting plug, the other end of the fixed shaft penetrates through the stator core, and the stator coil is installed on the stator core;

the damping protective cover comprises a cover body and two groups of damping spring components, the cover body is fixedly connected with the fixed shaft, and the fixed shaft is positioned between the two groups of damping spring components;

for each group of damping spring assemblies, each group of damping spring assemblies comprises a connecting piece and a damping spring, the connecting piece is fixedly arranged on the cover body, the damping springs are vertically arranged on the connecting piece in a penetrating manner, one ends of the damping springs are abutted against the cover body, and the other ends of the damping springs are abutted against a vehicle body;

the rotor comprises a rotor shell, an annular magnet and a rotor end cover, the rotor shell is arranged on the fixed shaft through a bearing, the annular magnet is arranged on the inner wall of the rotor shell and is coaxial with the fixed shaft, and the rotor end cover is fixedly arranged on the rotor shell;

the damping coupling comprises a damping rubber pile and an installation shell connected with an axle of a railway wagon, the installation shell is connected with the rotor end cover, the damping rubber pile is installed in the installation shell, the end face of the installation shell is provided with a limiting platform used for preventing the rotor end cover from falling off from the installation shell, and the damping rubber pile presses the rotor end cover on the limiting platform.

Preferably, the rotor end cover comprises an end cover body and a plurality of bosses circumferentially arranged on the end cover body, and the bosses extend along the radial direction of the fixed shaft;

the inner wall of the mounting shell is provided with a plurality of clamping grooves for clamping bosses, one end of each clamping groove extends to the end face of the mounting shell so that the bosses can extend into the clamping grooves, the limiting tables are respectively formed at the positions, corresponding to the clamping grooves, of the end parts of the mounting shell, and each clamping groove extends spirally;

each boss extends into the clamping groove from one end of the clamping groove and rotates for a set angle according to a set direction, so that the bosses rotate to one end, far away from the end face of the mounting shell, of the clamping groove, and the rotor end cover and the mounting shell can be connected together;

the groove width of the clamping groove along the axial direction of the fixed shaft is larger than the length of the boss along the axial direction of the fixed shaft, so that the boss is allowed to move in the clamping groove in a reciprocating mode along the axial direction of the fixed shaft, and the damping of the damping rubber pile on the rotor end cover is facilitated.

Preferably, the difference between the groove width of the clamping groove along the axial direction of the fixing shaft and the length of the boss along the axial direction of the fixing shaft is 0.5-2 mm.

Preferably, the stator core has a number of slots of 36, the ring magnet is internally radially magnetized and has poles of 40, 42 or 48.

Preferably, the outer circle of the ring magnet is glued and adhered to the inner wall of the rotor casing.

Preferably, the magnetic field of the railway wagon shaft end generator device is a radial magnetic field.

Preferably, the rotor further comprises an oil seal, an outer circular surface of the oil seal is mounted in an oil seal chamber of the inner wall of the rotor housing, and an inner circular surface of the oil seal is mounted on the fixed shaft.

Preferably, the fixing device further comprises a locking nut, wherein one end of the fixing shaft is provided with an external thread and a shoulder, the end of the fixing shaft penetrates through the cover body and then is connected with the locking nut, and the locking nut presses the cover body on the shoulder.

Preferably, the stator and rotor are both located within the housing.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

1) The damping spring component of the protective cover connected with the stator of the utility model is connected with the fixed shaft of the stator, when the vehicle body vibrates, the damping spring can effectively isolate the vibration of the vehicle body, so that the vibration of the vehicle body can be absorbed by the damping spring, and the influence of the vibration of the vehicle body on the whole generator is very small; in addition, the damping rubber piles are also arranged on the damping coupler, so that the vibration of the axle can be effectively isolated, and the normal rotation of the rotor is not influenced.

2) The utility model discloses an annular magnet of rotor is around stator core's mode, and annular magnet is outside and including stator core, can effectively increase the slot number of stator and the number of poles of rotor, and then has improved power density and the reliability of generator under the low rotational speed.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a schematic perspective view of a rotor cover according to the present invention;

fig. 4 is a schematic perspective view of the damping coupling of the present invention;

fig. 5 is a schematic view of a portion of the magnetic circuit of the present invention;

fig. 6 is a cross-sectional view of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 6, a generator device at a shaft end of a railway wagon comprises a damping protective cover 2, a stator, a rotor and a damping coupler 4, wherein:

the stator includes a coupling plug 301, a fixed shaft 302, a stator core 305, and a stator coil 304, wherein one end of the fixed shaft 302 is provided with the coupling plug 301, and the other end is penetrated with the stator core 305, and the stator coil 304 is mounted on the stator core 305.

The shock absorption protective cover 2 comprises a cover body 21 and two groups of shock absorption spring assemblies 22, wherein the cover body 21 is fixedly connected with the fixed shaft 302.

For each group of damping spring assemblies 22, each group of damping spring assemblies comprises a connecting piece and a damping spring, the connecting piece is fixedly mounted on the cover body 21, the damping springs are vertically arranged on the connecting pieces in a penetrating manner, one ends of the damping springs are abutted to the cover body 21, and the other ends of the damping springs are abutted to the vehicle body so as to realize damping between the vehicle body and the cover body 21. The connecting piece is preferably a bolt. The damper spring is preferably always in compression.

The damping spring can limit the fixed shaft 302 due to contact with the vehicle body, so that the fixed shaft 302 (or the stator) is prevented from continuously rotating, and the stator can only deflect in a small range when the vehicle body vibrates. The damper spring assembly 22 is provided in two, which are arranged in the front and rear direction of the vehicle body, and the fixed shaft 302 is provided between the two damper spring assemblies 22, so that the damper spring assemblies 22 can damp the stator in both the front and rear directions of the railway freight car. Therefore, no matter the railway wagon moves forwards or backwards, a damping spring can be in contact with the wagon body and compressed, and the bearing is prevented from being damaged due to collision between the cover body and the wagon body. If the elastic force of the damper spring is sufficiently large, the stator can be made to deflect hardly when the vehicle body vibrates.

The rotor comprises a rotor housing 312, a ring magnet 313 and a rotor end cover 314, wherein the rotor housing 312 is mounted on the fixed shaft 302 through bearings, preferably two bearings are provided, namely a first bearing 303 and a second bearing 306. An annular magnet 313 is installed on the inner wall of the rotor housing 312, and the outer circle of the annular magnet 313 is adhered to the inner wall of the rotor housing 312 through glue. The rotor cover 314 is fixedly installed on the rotor casing 312, preferably by a locking bolt 315 arranged at a side surface of the rotor cover 314; the stator and the rotor are both positioned in the cover body 21, and the cover body 21 can well protect the stator and the rotor. The utility model discloses a rotation of rotor and the electromagnetic induction of stator coil 304 send the alternating current, produce the electric energy, and the electricity that the generator device sent is carried away through the hookup plug 301 of stator. When the rotor rotates, the damper spring assembly 22 of the shield 2 comes into contact with the vehicle body to prevent the stator from continuously rotating, allowing the fixed shaft 302 to deflect only a small angle and the fixed shaft 302 to be quickly returned.

The rotor and the stator together form a power generating body 3.

The damping coupler 4 comprises a damping rubber pile 41 and a mounting shell 42 used for being connected with an axle of a railway wagon, the mounting shell 42 is connected with the rotor end cover 314, the damping rubber pile 41 is mounted in the mounting shell 42, a limiting table 422 used for preventing the rotor end cover 314 from falling off the mounting shell 42 is arranged on the end face of the mounting shell 42, the damping rubber pile 41 is always in a compression state, and initially, the damping rubber pile 41 presses the rotor end cover 314 on the limiting table 422 so as to achieve damping between the rotor end cover 314 and the mounting shell 42. Since the shock absorbing rubber pile 41 is made of rubber and has elasticity, when the compression amount of the shock absorbing rubber pile changes, the rotor end cover 314 can be allowed to have a certain displacement along the axial direction of the fixed shaft 302, so that the shock absorbing rubber pile can adapt to the axial vibration of the axle. After the rotor cover 314 is mounted on the mounting shell 42, the rotor cover 314 and the mounting shell 42 do not rotate relatively, and the rotor cover 314 can move axially along the fixed shaft 302 relative to the mounting shell 42 to adapt to the compression variation of the damper rubber stack 41 and the axial movement of the rotor cover 314.

Because the mounting shell 42 is directly connected with the axle, when the axle rotates, the mounting shell 42 drives the rotor end cover 314 to rotate, the whole rotor also rotates, if the damping rubber pile 41 is mounted in the mounting shell 42, the damping rubber pile 41 can effectively absorb the vibration of the axle, and the vibration can be absorbed in the radial direction and the axial direction. The rubber material of the damper rubber 41 itself provides a damper function in the radial direction of the fixed shaft after being mounted on the mounting case 42. When the mounting shell 42 vibrates under the driving of an axle, the damping rubber pile 41 acts on the rotor end cover 314, and the rotor end cover 314 is subjected to flexible impact, so that the whole rotor can be well damped, and the normal rotation of the rotor cannot be influenced. The cushion rubber 41 preferably includes a disk-shaped structure and a Y-shaped structure, the main body of which is a disk-shaped structure, the side of the disk-shaped structure is provided with the Y-shaped structure, and the Y-shaped structure is a central symmetrical structure.

Due to the provision of the damper spring assembly 22 and the damper rubber mass 41, the vibrations of the vehicle body and the axle hardly affect the normal rotation of the rotor and the normal power generation of the power generating main body 3. However, if the damper spring assembly 22 and the damper rubber mass 41 are not installed, the up-and-down vibration of the vehicle body and the axle may cause great damage to the power generating main body 3, particularly to the bearings installed on the stationary shaft 302, so that the bearings on the stationary shaft 302 may be easily damaged, and further, the stator and the rotor may be damaged, which may reduce the service life of the power generating main body 3. The bearings on the fixed shaft 302 are also easily damaged by the radial and axial vibrations of the axle if the damper rubber mass 41 is not mounted.

Further, rotor end cover 314 includes an end cover body and a plurality of bosses 3411 circumferentially disposed on the end cover body, wherein the bosses 3411 extend in a radial direction of the stationary shaft 302.

Be provided with a plurality of draw-in grooves 421 that are used for blocking boss 3411 on the inner wall of installation shell 42, the one end of every draw-in groove 421 all extends to the terminal surface of installation shell 42 to boss 3411 stretches into in the draw-in groove 421, and the tip of installation shell 42 forms respectively in the position that corresponds to every draw-in groove 421 spacing platform, every draw-in groove 421 all are the heliciform and extend.

Each of the bosses 3411 extends into the corresponding slot 421 from one end of the slot 421 and is rotated by a predetermined angle in a predetermined direction, so that the bosses 3411 are rotated to an end of the slot 421 away from the end face of the mounting housing 42, thereby connecting the rotor end cap 314 and the mounting housing 42 together. Through the cooperation of boss 3411 and draw-in groove 421, rotor end cover 314 and installation shell 42 dismouting can be realized fast. The utility model discloses be equipped with three columniform boss 3411 on the preferred rotor end cover 314, be equipped with three draw-in groove 421 on the installation shell 42, boss 3411 on the rotor end cover 314 is seen from the axle extension end of fixed axle 302, in the mounting groove of following clockwise screw in installation shell 42, constitutes the effective hookup between the two.

The groove width of the clamping groove 421 along the axial direction of the fixing shaft is greater than the length of the boss 3411 along the axial direction of the fixing shaft, preferably, the difference between the two is 0.5mm to 1mm, so that the boss 3411 is allowed to move back and forth in the clamping groove 421 along the axial direction of the fixing shaft 302, and the shock absorption of the shock absorption rubber stack 41 on the rotor end cover 314 is facilitated. When the axle vibrates along the self-axial direction, the mounting shell 42 can be driven to vibrate together, and then the compression amount of the damping rubber stack 41 can be deformed, so that the rotor end cover 314 can adapt to the axial vibration of the axle along the axial reciprocating movement of the fixed shaft 302, and in the reciprocating movement process of the rotor end cover 314, the damping rubber stack 41 is always in contact with the rotor end cover 314 to realize damping.

Further, the number of slots of the stator core 305 is 36, the ring magnet 313 is magnetized in the inner radial direction, and the number of poles of the ring magnet 313 is 40, 42 or 48. Because the ring magnet 313 is outside and the stator core 305 is inside, the number of slots of the stator and the number of poles of the rotor can be effectively increased, and the power density and the reliability of the generator 3 at low rotating speed are further improved.

Further, the rotor further comprises an oil seal 311, the outer circular surface of the oil seal 311 is installed in the oil seal 311 chamber on the inner wall of the rotor housing 312, and the inner circular surface is installed on the fixed shaft 302, so that the sealing and protection effects can be effectively achieved.

Further, the fixing device further comprises a locking nut 1, wherein one end of the fixing shaft 302 is provided with an external thread and a shoulder, the other end of the fixing shaft passes through the cover body 21 and then is connected with the locking nut 1, and the cover body 21 is pressed on the shoulder by the locking nut 1, so that the cover body 21 is tightly connected with the fixing shaft 302.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a railway freight car axle head generator device which characterized in that, includes shock attenuation protection casing, stator, rotor and shock attenuation shaft coupling, wherein:

2. The railway wagon shaft end generator device as recited in claim 1, wherein the rotor end cover comprises an end cover body and a plurality of bosses circumferentially arranged on the end cover body, and the bosses extend along a radial direction of the fixed shaft;

a plurality of clamping grooves for clamping the bosses are formed in the inner wall of the mounting shell, one end of each clamping groove extends to the end face of the mounting shell, so that the bosses can extend into the clamping grooves, the limiting tables are formed at positions, corresponding to the clamping grooves, of the end portion of the mounting shell, and each clamping groove extends spirally;

3. The shaft end generator device of the railway wagon as claimed in claim 2, wherein the difference between the groove width of the clamping groove along the axial direction of the fixing shaft and the length of the boss along the axial direction of the fixing shaft is 0.5-2 mm.

4. The shaft end generator device of the railway wagon of claim 1, wherein the stator core has a number of slots of 36, the ring magnet is internally radially magnetized, and the magnetic pole is 40, 42 or 48.

5. The shaft end generator device of the railway wagon as defined in claim 1, wherein the outer circle of the annular magnet is glued and bonded to the inner wall of the rotor casing.

6. The railway wagon shaft end generator device as claimed in claim 1, wherein the magnetic field of the railway wagon shaft end generator device is a radial magnetic field.

7. A railway wagon shaft end generator apparatus as claimed in claim 1, wherein the rotor further comprises an oil seal, an outer circumferential surface of the oil seal is mounted in an oil seal chamber of an inner wall of the rotor housing, and an inner circumferential surface of the oil seal is mounted on the fixed shaft.

8. The shaft end generator device of claim 1, further comprising a locking nut, wherein one end of the fixing shaft is provided with an external thread and a shoulder, and the end of the fixing shaft penetrates through the cover body and then is connected with the locking nut, and the locking nut presses the cover body on the shoulder.

9. The railway wagon shaft end generator device as recited in claim 1, wherein the stator and the rotor are both located within the housing.