CN112701844B

CN112701844B - Shaft end power generation device and railway vehicle

Info

Publication number: CN112701844B
Application number: CN202011544519.8A
Authority: CN
Inventors: 王蒙; 丁颖; 王文刚; 王洪昆; 边志宏; 王萌; 焦杨; 马瑞峰; 石宏原; 胡玉梅; 安鸿; 蒋勇; 李谋逵; 任治平; 吴吉恒; 刘文军; 宋寨林; 刘亚梅; 李兵; 张庆良
Original assignee: Shenhua Railway Equipment Co Ltd; Meishan CRRC Brake Science and Technology Co Ltd
Current assignee: Shenhua Railway Equipment Co Ltd; Meishan CRRC Brake Science and Technology Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-02-22
Anticipated expiration: 2040-12-23
Also published as: CN112701844A

Abstract

The invention relates to a shaft end power generation device and a railway vehicle. The mount pad is used for fixed the axle head portion of installing in the vehicle, and the mount pad includes bedplate and the bounding wall that sets up around bedplate circumference. The rotor assembly includes an outer housing. Stator module sets up in the inside of shell body, and the cavity is located to the shell body. On the one hand, the locating part can avoid vehicle vibration in-process to lead to the fact the damage for axle head power generation facility with the damping elastic block, on the other hand, can make the rotor subassembly remain relative static with the mount pad all the time, can avoid rotor subassembly axial rebound promptly, make mount pad and rotor subassembly fixed together, mount pad and rotor subassembly keep setting up with the axle center, avoid the adverse effect because of the eccentric bringing of installation in axle head power generation facility operation process, the installation stability on the axle head is better, be favorable to realizing the consumer on the railway vehicle and continuously stably supply power.

Description

Shaft end power generation device and railway vehicle

Technical Field

The invention relates to the technical field of power generation devices, in particular to an axle end power generation device and a railway vehicle.

Background

Railway vehicles are vehicles used in the rail transportation sector to transport passengers and cargo. Railway vehicles are divided into two broad categories, passenger cars and freight cars. The existing electric equipment on the railway vehicle usually comprises a car lamp, an electric heating device, a power socket and the like, and the power consumption is not large, so that the electric equipment is usually powered by adopting vehicle-mounted energy storage type power supply equipment, or an internal combustion engine is adopted to drive a generator to supply power. For a common train, an electric traction locomotive power supply mode is adopted, namely power is supplied on a railway line along the way through a contact network.

With the improvement of the management and control requirements of a user on the railway vehicle, it is necessary to install electric equipment such as an electric pneumatic brake, an Electronic Stability Program (ESP), an intelligent monitoring device, etc. on the railway vehicle, and if only the vehicle-mounted energy storage type power supply equipment is adopted, the electric energy of the vehicle-mounted energy storage type power supply equipment is insufficient, and the stable power supply of the electric equipment on the railway vehicle cannot be ensured.

Disclosure of Invention

Based on this, it is necessary to overcome the defects in the prior art, and to provide an axle power generation device and a railway vehicle, which can generate power by using the kinetic energy generated by the rotation of the axle during the operation of the railway vehicle, and have good installation stability at the axle end, thereby being beneficial to continuously and stably supplying power to the electric equipment on the railway vehicle.

The technical scheme is as follows: an axle end power plant, said axle end power plant comprising:

the mounting seat is used for being fixedly arranged at the end part of a vehicle axle of a vehicle and comprises a seat plate and a surrounding plate arranged around the circumferential direction of the seat plate, and the surrounding plate and the seat plate are surrounded to form a cavity;

the rotor assembly comprises an outer shell, the stator assembly is arranged in the outer shell, and the outer shell is arranged in the cavity;

the damping elastic block is arranged in the cavity, the outer shell is connected with the seat plate through the damping elastic block, and the limiting piece is arranged on the coaming and is abutted against the outer shell so that the damping elastic block is positioned between the seat plate and the outer shell in a pre-tightening compression state;

the connecting shaft and the positioning piece, the connecting shaft one end runs through the shell body and stretches into in the shell body, the connecting shaft other end pass through the positioning piece be used for with the spacing cooperation of the major structure of vehicle, stator module is fixed set up in on the connecting shaft, the shell body pass through the bearing rotationally set up in on the connecting shaft.

The axle end power generation device is characterized in that the mounting seat is fixedly arranged at the axle end of a vehicle, the connecting shaft is in spacing fit with the main structure of the vehicle through the positioning piece, the rotor assembly is synchronously driven to rotate when the axle end rotates in the running process of the vehicle, the stator assembly is fixed on the connecting shaft and keeps relatively static with the main structure of the vehicle, and the rotor assembly rotates relative to the stator assembly, so that the kinetic energy generated by the rotating motion of the axle of the railway vehicle in the running can be utilized to generate power. Wherein, the locating part sets up on the bounding wall and inconsistent so that damping elastic block is in between bedplate and the shell body with pretension compression state with the shell body, so on the one hand, locating part and damping elastic block can avoid the vehicle vibration in-process to cause the damage for axle head power generation facility, on the other hand, can make the rotor subassembly remain relative static with the mount pad throughout, can avoid the axial rebound of rotor subassembly, make mount pad and rotor subassembly fixed together, mount pad and rotor subassembly keep setting up with the axle center, avoid the adverse effect that axle head power generation facility operation in-process brought because of the installation is eccentric, installation stability on the axle head is better, be favorable to realizing continuously stably supplying power for the consumer on the rail vehicle.

The railway vehicle comprises the shaft end power generation device, a main body structure and a vehicle shaft rotationally arranged on the main body structure, wherein a mounting seat is fixedly arranged at the end part of the vehicle shaft, and the other end of a connecting shaft is in limit fit with the main body structure through a positioning piece.

Foretell railway vehicle, with the fixed axletree tip of installing in the vehicle of mount pad to and make the connecting axle pass through the spacing cooperation of the major structure of setting element and vehicle, like this at the vehicle operation in-process, the synchronous rotor subassembly that drives when axletree tip rotates, stator module fixes on the connecting axle and the major structure of vehicle keeps static relatively, just so rotor subassembly rotates for stator module, thereby can utilize railway vehicle to generate electricity in the kinetic energy that axletree rotary motion produced in service. Wherein, the locating part sets up on the bounding wall and inconsistent so that damping elastic block is in between bedplate and the shell body with pretension compression state with the shell body, so on the one hand, locating part and damping elastic block can avoid the vehicle vibration in-process to cause the damage for axle head power generation facility, on the other hand, can make the rotor subassembly remain relative static with the mount pad throughout, can avoid the axial rebound of rotor subassembly, make mount pad and rotor subassembly fixed together, mount pad and rotor subassembly keep setting up with the axle center, avoid the adverse effect that axle head power generation facility operation in-process brought because of the installation is eccentric, installation stability on the axle head is better, be favorable to realizing continuously stably supplying power for the consumer on the rail vehicle.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a shaft end power generation device according to an embodiment of the invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

fig. 3 is another perspective structural diagram of the shaft end power generation device according to an embodiment of the invention;

fig. 4 is a schematic structural view illustrating the shaft end power generation device of the embodiment of the invention mounted on the end portion of the axle;

FIG. 5 is a view structural diagram of one of the vibration damping elastic blocks according to an embodiment of the present invention;

FIG. 6 is another perspective view of the damping elastomer block according to an embodiment of the present invention;

FIG. 7 is a further perspective view of a vibration damping elastomer block in accordance with an embodiment of the present invention;

FIG. 8 is a view structure diagram of a positioning element according to an embodiment of the invention;

FIG. 9 is a structural view of another view angle of a positioning element according to an embodiment of the present invention;

FIG. 10 is a view of a positioning element according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a damping sleeve according to an embodiment of the present invention;

FIG. 12 is a structural diagram of a positioning element fixedly mounted on a connecting shaft according to an embodiment of the present invention;

FIG. 13 is a view of a protective shell according to an embodiment of the invention;

FIG. 14 is a schematic view of another embodiment of a protective shell;

fig. 15 is a view of a protective shell according to an embodiment of the invention.

10. A mounting seat; 11. a seat plate; 111. a first concave part; 12. enclosing plates; 121. an observation window; 122. a groove; 123. a material taking port; 13. a first mounting part; 21. an outer housing; 211. a first split shell; 2111. a fourth concave part; 212. a second split shell; 2121. a first shaft hole; 2122. a fifth concave part; 213. a flange; 2131. a second arc-shaped concave surface; 214. a second concave part; 22. a first bearing; 23. a second bearing; 24. a magnet; 25. a first seal ring; 26. a second seal ring; 30. a stator assembly; 31. a positioning sleeve; 32. injection molding a coil; 40. a vibration damping elastic block; 41. a first bump; 42. a second bump; 43. a third concave part; 44. a hollow-out area; 50. a limiting member; 60. a connecting shaft; 61. a first step; 62. a second step; 63. a third step; 64. a fourth step; 65. a fifth step; 66. a sixth step; 70. a positioning member; 71. positioning the main board; 711. a second shaft hole; 712. a first mounting hole; 72. positioning a support plate; 73. a damping buffer layer; 74. a vibration damping shaft sleeve; 81. an axle; 82. a body structure; 91. a first stopper plate; 92. a second stopper plate; 93. a locking member; 94. a lock washer; 95. a protective shell; 951. a first housing; 952. a second housing; 9521. a second mounting hole; 953. a third housing; 96. a second mounting part; 97. a collar.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, 2 and 4, fig. 1 shows a schematic structural diagram of a shaft-end power generation device according to an embodiment of the present invention, fig. 2 shows an enlarged schematic structural diagram of fig. 1 at a, and fig. 4 shows a schematic structural diagram of the shaft-end power generation device according to an embodiment of the present invention mounted on an end of an axle 81. According to an embodiment of the shaft end power generation device provided by the invention, the shaft end power generation device comprises an installation base 10, a rotor assembly, a stator assembly 30, a vibration damping elastic block 40, a limiting member 50, a connecting shaft 60 and a positioning member 70. The mount 10 is used for fixing an end of an axle 81 mounted on a vehicle, and the mount 10 includes a seat plate 11 and a surrounding plate 12 disposed around a circumferential direction of the seat plate 11. The enclosure 12 encloses a chamber with the seat plate 11. The rotor assembly includes an outer housing 21. The stator assembly 30 is disposed inside the outer housing 21, and the outer housing 21 is disposed in the cavity. A damper elastomeric block 40 is disposed in the chamber. The outer housing 21 is connected to the seat plate 11 by means of a vibration-damping elastic block 40. The limiting member 50 is disposed on the enclosing plate 12 and abuts against the outer shell 21 so that the damping elastic block 40 is located between the seat plate 11 and the outer shell 21 in a pre-tightening compression state. One end of the connecting shaft 60 penetrates through the outer shell 21 and extends into the outer shell 21, and the other end of the connecting shaft 60 is used for being in limit fit with a main structure 82 of the vehicle through a positioning piece 70. The stator assembly 30 is fixedly disposed on the connecting shaft 60, and the outer housing 21 is rotatably disposed on the connecting shaft 60 through a bearing.

In the shaft end power generation device, the mounting seat 10 is fixedly mounted at the end of the axle 81 of the vehicle, and the connecting shaft 60 is in limit fit with the main structure 82 of the vehicle through the positioning piece 70, so that in the running process of the vehicle, the end of the axle 81 rotates to synchronously drive the rotor assembly to rotate, the stator assembly 30 is fixed on the connecting shaft 60 and keeps relatively static with the main structure 82 of the vehicle, and thus the rotor assembly rotates relative to the stator assembly 30, and power can be generated by utilizing kinetic energy generated by the rotating motion of the axle 81 during the running of the railway vehicle. Wherein, locating part 50 sets up on bounding wall 12 and contradicts so that damping elastic block 40 is in between bedplate 11 and shell body 21 with pretension compression state, so on the one hand, locating part 50 and damping elastic block 40 can avoid the vehicle vibration in-process to cause the damage for axle head power generation facility, on the other hand, can make the rotor subassembly remain relative static with mount pad 10 throughout, can avoid the axial rebound of rotor subassembly, make mount pad 10 and rotor subassembly fixed together, mount pad 10 and rotor subassembly keep setting up with the axle center, avoid the adverse effect because of the installation is eccentric to bring in the axle head power generation facility operation process, installation stability on axletree 81 tip is better, be favorable to realizing continuously stably supplying power for the consumer on the railway vehicle.

Referring to fig. 1, 2 and 4, the pre-tightening force of the damping elastic block 40 is 300N to 1500N. So, can realize that the rotor subassembly is installed comparatively steadily on mount pad 10, can guarantee that mount pad 10 and rotor subassembly keep setting up with the axle center, can avoid the adverse effect that axle head power generation facility operation in-process brought because of the installation is eccentric. In addition, it should be noted that the precompression rate of the damping elastic block 40 is generally controlled to be 5% to 25%, and when the damping elastic block 40 has a certain amount of precompression rate after being installed between the seat plate 11 and the outer housing 21, the damping elastic block 40 correspondingly generates a pre-tightening force, and the pre-tightening force is in direct proportion to the precompression rate.

Referring to fig. 1, 5 to 7, fig. 5 shows a view-angle structural diagram of a vibration-damping elastic block 40 according to an embodiment of the present invention, fig. 6 shows another view-angle structural diagram of the vibration-damping elastic block 40 according to an embodiment of the present invention, and fig. 7 shows another view-angle structural diagram of the vibration-damping elastic block 40 according to an embodiment of the present invention. Further, one end surface of the vibration-damping elastic block 40 is provided with a first protrusion 41, the surface of the seat plate 11 is provided with a first recess 111 adapted to the first protrusion 41, and the first protrusion 41 is disposed in the first recess 111. In addition, the other end face of the damping elastic block 40 is provided with a second projection 42, the surface of the outer housing 21 is provided with a second recess 214 corresponding to the second projection 42, and the second projection 42 is arranged in the second recess 214. Thus, the vibration damping elastic block 40 is stably arranged between the mounting seat 10 and the outer shell 21, the rotor assembly can be stably arranged on the mounting seat 10, the mounting seat 10 and the rotor assembly can be ensured to be coaxially arranged, and adverse effects caused by installation eccentricity in the operation process of the shaft end power generation device can be avoided. It should be noted that the number of the first bumps 41 is not limited, and may be one, two, three or another number, and the number of the first recesses 111 corresponds to the number of the first bumps 41. In addition, the number of the second bumps 42 is not limited, and may be one, two, three or another number.

Alternatively, the first protrusion 41 may be disposed on the surface of the seat plate 11, and a recess 111 adapted to the first protrusion 41 may be disposed on one end surface of the damping elastic block 40, so as to achieve the effect of positioning and matching the damping elastic block 40 and the surface of the seat plate 11. Similarly, the second projection 42 may be provided on the surface of the outer housing 21, and the second recess 214 corresponding to the second projection 42 may be provided on the other end surface of the damper elastic block 40, so as to achieve the effect of positioning and fitting the damper elastic block 40 with the surface of the outer housing 21.

In one embodiment, the number of the first bumps 41 is several, and the several first bumps 41 are uniformly distributed on one end surface of the vibration damping elastic block 40 in a surrounding manner by taking the axis of the vibration damping elastic block 40 as a center; the second bumps 42 are disposed on the other end surface of the vibration-damping elastic block 40, and the second bumps 42 are uniformly arranged around the axis of the vibration-damping elastic block 40. Therefore, in the assembling process of the shaft end power generation device, the outer shell 21 can stably push the compression vibration damping elastic block 40 along the axial direction, the axial direction of the outer shell 21 is not easy to deviate from the axial direction of the mounting seat 10, and the outer shell 21 and the mounting seat 10 are ensured to be coaxially arranged.

In one embodiment, the shock absorbing elastomeric blocks 40 are wear resistant rubber blocks. Alternatively, the middle portion of the end surface of the damper elastic block 40 facing the outer housing 21 is provided with a recess three 43, and the outer housing 21 is provided with a first projection adapted to the recess three 43, the first projection being provided in the recess three 43. Like this, when adopting wear-resisting rubber piece, the heat conductivity is extremely low, plays thermal-insulated effect, avoids the heat that the rotor subassembly produced to produce the hotbox phenomenon on passing through mount pad 10 and transmitting axletree 81. It is understood that the damping elastic block 40 may also be a silicon rubber block, a plastic block, or the like elastic block, which is not limited herein. Further, since the first projection of the outer case 21 is provided in the recess portion three 43, the outer case 21 and the damper elastic block 40 are firmly combined together.

In one embodiment, the mounting base 10 is fixedly mounted to the end of the axle 81 by a first mounting member 13. Alternatively, the mount 10 is fixedly bonded to the end of the axle 81. Alternatively, the mounting seat 10 is snap-fitted and fixed to the end of the axle 81. Alternatively, the mount 10 is fixed by welding to the end of the axle 81. Specifically, the first mounting member 13 may be, for example, a bolt, a pin, a rivet, a screw, and the like, which are not limited herein.

Referring to fig. 3, 5 and 6, fig. 3 is a schematic view illustrating another perspective structure of the shaft end power generation device according to an embodiment of the invention. Further, the first mounting member 13 is a shaft end bolt, which penetrates through the seat plate 11 and is fixedly mounted on the end face of the end portion of the axle 81. In addition, the mounting pieces 13 are arranged on the seat plate 11 in an evenly-spaced manner by taking the axis of the seat plate 11 as the center. In addition, the damping elastic block 40 is provided with a hollow-out area 44, the shaft end bolt is positioned in the hollow-out area 44, and the coaming 12 is provided with an observation window 121 communicated with the hollow-out area 44. Thus, on one hand, the mounting seat 10 is fixed on the end surface of the end of the axle 81 through a plurality of axle end bolts, so that the mounting seat 10 is stably installed on the end surface of the end of the axle 81; on the other hand, as the vibration-damping elastic block 40 is provided with the hollow-out area 44, when the vibration-damping elastic block is arranged in the mounting seat 10, the shaft end bolt is just positioned in the hollow-out area 44, so that the installation of the vibration-damping elastic block 40 on the mounting seat 10 is not influenced, and the installation effect of the vibration-damping elastic block 40 is more stable; in addition, because the enclosing plate 12 is provided with the observation window 121, the position of the observation window 121 is just correspondingly communicated with the position of the hollow-out area 44, so that whether the shaft end bolt at the position of the hollow-out area 44 is loosened or not can be observed, and whether the shaft end bolt is loosened or not can be judged by touching the shaft end bolt by hand.

Referring to fig. 1, 2 and 4, in one embodiment, the rotor assembly further includes a magnet 24 fixedly disposed on the outer housing 21. The stator assembly 30 includes a positioning sleeve 31 and an injection molding coil 32, the positioning sleeve 31 is fixedly disposed on the connecting shaft 60, and the injection molding coil 32 is disposed on the positioning sleeve 31. Thus, when the rotor blocking component and the stator component 30 rotate mutually, the kinetic energy generated by the rotation of the axle 81 can be utilized to generate electricity.

It is understood that the magnet 24 and the injection-molded coil 32 may be disposed in different positions, and the kinetic energy generated by the rotation of the axle 81 may be used to generate electricity.

Referring to fig. 1, 2 and 4, in one embodiment, the outer housing 21 includes a first split housing 211 and a second split housing 212 that are joined together. The first split case 211 abuts against the damping elastic block 40, and the second split case 212 abuts against the stopper 50. Thus, the first split case 211 and the second split case 212 are opened, the magnet 24 can be mounted on the inner wall of the outer case 21, and the stator assembly 30 can be mounted inside the outer case 21. In addition, since the first split case 211 is in close interference fit with the damping elastic block 40, the position of the second split case 212 in the axial direction is restricted by the stopper 50, and the first split case 211 is firmly combined with the second split case 212 by the pre-load force of the damping elastic block 40 itself. Specifically, the first split case 211 is provided with a plurality of magnets 24 at intervals around the axial center thereof, and the second split case 212 is provided with a plurality of magnets 24 at intervals around the axial center thereof.

Referring to fig. 1, 2 and 4, in one embodiment, a first sealing ring 25 is disposed at a joint portion of the first split case 211 and the second split case 212. The second split shell 212 is provided with a first shaft hole 2121 for the connecting shaft 60 to pass through, a second sealing ring 26 is arranged on the hole wall of the first shaft hole 2121, and the second sealing ring 26 is sleeved on the connecting shaft 60. Therefore, the first sealing ring 25 and the second sealing ring 26 can ensure the sealing performance of the outer shell 21, and can prevent dust, rainwater and other impurities from entering the outer shell 21, so that the service life of the shaft section power generation device can be prolonged.

Referring to fig. 1, 2 and 4, in one embodiment, the bearing includes a first bearing 22 and a second bearing 23. A fourth recess 2111 corresponding to the first bearing 22 is provided in the middle of the inner wall surface of the first split case 211, and a fifth recess 2122 corresponding to the second bearing 23 is provided in the middle of the inner wall surface of the second split case 212. The first bearing 22 is accommodated in the recess four 2111, and the second bearing 23 is accommodated in the recess five 2122. In this way, the outer housing 21 is rotatably disposed on the connecting shaft 60 through the first bearing 22 and the second bearing 23, and the rotating effect on the connecting shaft 60 is relatively stable.

Specifically, the fourth recess 2111 is formed by the middle portion of the first split case 211 protruding toward the damping elastic block 40, and the fifth recess 2122 is formed by the middle portion of the second split case 212 protruding toward the direction away from the damping elastic block 40, so that the weights of the first and

second split cases

211 and 212 can be reduced.

Referring to fig. 1, 2 and 4, in one embodiment, a flange 213 is circumferentially disposed around the outer wall of the outer casing 21, and the flange 213 is in interference fit with the inner wall of the shroud 12. In this way, the flange 213 contacts with the inner wall of the surrounding plate 12 to position the outer casing 21, so that the axis of the outer casing 21 is the same as the axis of the mounting seat 10, and the outer casing 21 can be stably mounted in the mounting seat 10.

Referring to fig. 1, 2 and 4, in one embodiment, the position-limiting element 50 is a retaining ring, a groove 122 is formed around the inner wall of the enclosure 12, the retaining ring is disposed in the groove 122, and a portion of the retaining ring protrudes out of the groove 122 and abuts against the flange 213. Thus, the retainer ring is abutted against and fixed to the flange 213, thereby limiting the movement of the outer housing 21 along the axial direction of the mounting seat 10. Specifically, the retainer ring is a wire retainer ring, a wire ring, a copper wire ring, or the like, and is not limited herein.

Referring to fig. 1, 2 and 4, the outer shell 21 illustrated in fig. 2 is not yet tightly pressed against the damper elastomeric block 40, and thus the second arcuate recessed surface 2131 has not moved to a position co-circular with the first arcuate recessed surface. In one embodiment, the axial cross-section of the retainer ring is a circular or elliptical surface. The inner wall surface of the groove 122 is a first arc-shaped concave surface and is adapted to the wall surface of the retainer ring. The part of the flange 213, which is in contact with the retainer ring, is provided with a second arc-shaped concave surface 2131, and the second arc-shaped concave surface 2131 is adapted to the wall surface of the retainer ring. Thus, the retainer ring is stably seated in the groove 122 and abuts against the flange 213 of the outer housing 21, so that the outer housing 21, the vibration damping elastic block 40 and the mounting seat 10 are stably fixed together. In addition, the retainer ring can be conveniently drawn out of the groove 122 through the material taking opening 123.

In a specific embodiment, the first curved concave surface can be, for example, a 180 degree curved concave surface with a radius of 2mm, the second curved concave surface 2131 can be, for example, a 90 degree curved concave surface with a radius of 2mm, and the first curved concave surface and the second curved concave surface 2131 can be used for installing a retainer ring with a radius of 2mm in axial cross section when they are aligned together in a corresponding split manner.

Referring to fig. 2 and 3, in one embodiment, the enclosing plate 12 is provided with a material taking opening 123, and the material taking opening 123 is communicated with the groove 122. The retainer ring is provided with a notch section. Because the retaining ring is equipped with the breach section, the retaining ring is not for the closed structure of annular like this, like this alright outwards take out the retaining ring from recess 122 through getting material mouth 123, alright like this with carry out dismouting operation to axle head power generation facility.

Furthermore, the number of the material taking ports 123 is several, and the several material taking ports 123 are wound around the enclosing plate 12 at intervals. Therefore, according to the actual situation, the limiting member 50 can be selectively taken out of the groove 122 through one of the material taking openings 123, and the operation of taking out the limiting member 50 is convenient. Specifically, the number of the material taking ports 123 is three, for example, and the three material taking ports 123 are provided around the shroud 12 at equal intervals. Of course, the number of the material taking ports 123 may be one, two, four or other numbers, which is not limited herein.

It should be noted that the position of the position limiting element 50 is changed to realize whether the position limiting element 50 limits the outer shell 21, for example, a plurality of insertion holes may be formed in the shroud 12, and the position limiting element 50 may be movably disposed in the insertion holes, and the position limiting element 50 may be arranged on the shroud 21.

Referring to fig. 4, 8 to 10, fig. 8 shows a view structural diagram of a positioning element 70 according to an embodiment of the present invention, fig. 9 shows another view structural diagram of the positioning element 70 according to an embodiment of the present invention, and fig. 10 shows another view structural diagram of the positioning element 70 according to an embodiment of the present invention. In one embodiment, the positioning member 70 includes a positioning main plate 71 and two positioning support plates 72 respectively connected to two ends of the positioning main plate 71. The positioning main plate 71 is connected with the connecting shaft 60, and the positioning support plate 72 is used for being in limit fit with a main structure 82 of the vehicle.

It should be noted that, in infringement comparison, the "positioning strip 72" may be a part of the "positioning main plate 71", that is, the "positioning strip 72" and the "other part of the positioning main plate 71" are integrally formed; or a separate member that can be separated from the other parts of the positioning main plate 71, that is, the positioning support plate 72 can be manufactured separately and then combined with the other parts of the positioning main plate 71 into a whole. As shown in fig. 8 to 10, in one embodiment, the "positioning plate 72" is a part of the "positioning main plate 71" which is integrally formed.

Optionally, the positioning member 70 is made of, for example, a high-new engineering plastic PPE, which reduces weight while being waterproof, fireproof, and corrosion-resistant. Of course, the positioning member 70 may be made of other materials, and is not limited herein.

Referring to fig. 4, 8-10, in one embodiment, the ends of the positioning plate 72 are adapted for contacting engagement with the saddle bottom surface of the body structure 82. Like this, the tip of two location extension boards 72 and the bottom surface of bearing the saddle mutually contact the cooperation, and the saddle plays limiting displacement to two location extension boards 72 like this, avoids location extension board 72 to follow mount pad 10 and rotates.

Referring to fig. 4, 8 to 10, a vibration damping buffer layer 73 is further disposed on an end surface of the positioning support plate 72 away from the positioning main plate 71, and the positioning support plate 72 is configured to be in contact with the bottom surface of the bearing saddle through the vibration damping buffer layer 73. Specifically, the vibration damping cushion layer 73 is made of, for example, vibration damping brushes, rubber, or other elastic materials. So, damping buffer layer 73 can cushion vibration and impact from the external world or on the vehicle to can guarantee the installation stability of axle head power generation facility on axletree 81 tip, be favorable to realizing for the last consumer of rail vehicle lasts stable power supply.

Referring to fig. 9, further, the thickness d of the positioning support plate 72 gradually decreases from the end connected to the positioning main plate 71 to the end where the vibration damping buffer layer 73 is located. In this manner, the positioning plate 72 is provided with a ramp structure to increase the attachment strength of the support portion of the positioning member 70.

Referring to fig. 4, 10 and 11, fig. 11 is a schematic structural diagram of a damping bushing 74 according to an embodiment of the present invention. Furthermore, the positioning main plate 71 is provided with a second shaft hole 711 for the connecting shaft 60 to pass through, a damping shaft sleeve 74 is arranged in the second shaft hole 711, and the damping shaft sleeve 74 is sleeved on the connecting shaft 60. Therefore, the positioning main plate 71 is sleeved on the connecting shaft 60 through the damping shaft sleeve 74, so that vibration and impact from the outside or a vehicle are buffered through the damping shaft sleeve 74, the stability of the shaft end power generation device is improved, and the service life of the shaft end power generation device is prolonged.

Further, the outer wall surface of the damper bushing 74 conforms to the inner wall surface of the second shaft hole 711, and the inner wall surface of the damper bushing 74 conforms to the outer wall surface of the connecting shaft 60. The outer wall surface of the damper boss 74 is a non-circular surface, and the inner wall surface of the damper boss 74 is a non-circular surface. Thus, the damping bushing 74 does not rotate relative to the connecting shaft 60, the damping bushing 74 is firmly combined with the connecting shaft 60, the damping bushing 74 does not rotate relative to the positioning main plate 71, the damping bushing 74 is firmly combined with the positioning main plate 71, and the connecting shaft 60 is fixed with the positioning main plate 71. The term "non-circular surface" means not a circular surface, but any other shape may be used, for example, an oval shape, a square shape, a trapezoidal shape, a triangular shape, etc., and is not limited to these and is not intended to be listed.

Referring to fig. 12, fig. 12 is a structural diagram illustrating that the positioning element 70 is fixedly mounted on the connecting shaft 60 according to an embodiment of the present invention. Further, the shaft end generating device further comprises a first stop plate 91, a second stop plate 92 and a locking piece 93. The connecting shaft 60 is provided with a first step 61, a second step 62 and a third step 63. The first stop plate 91 is fixedly arranged on the second step 62, one side surface of the first stop plate 91 is abutted against the first step 61, the other side surface of the first stop plate 91 is abutted against one side surface of the positioning main plate 71, the damping shaft sleeve 74 is sleeved and fixed on the second step 62, the second stop plate 92 is sleeved and fixed on the third step 63, the other side surfaces of the second step 62 and the positioning main plate 71 are all abutted against one side surface of the second stop plate 92, the other side surface of the second stop plate 92 is abutted against the locking piece 93, and the locking piece 93 is fixedly arranged on the third step 63.

Referring to fig. 12, in an embodiment, the locking member 93 is a locking nut, the locking nut is sleeved and fixed on the connecting shaft 60, and the shaft-end power generation device further includes a lock washer 94 disposed between the second stop plate 92 and the locking nut. It should be noted that the locking member 93 is not limited to a locking nut, and may be other members that can be used to fix the position of the second stopper plate 92 on the connecting shaft 60.

Referring to fig. 2, 4 and 12, the connecting shaft 60 is further provided with a fourth step 64 and a fifth step 65. The fourth step 64, the fifth step 65, the first step 61, the second step 62, and the third step 63 are sequentially arranged along the axial direction of the connecting shaft 60. The first bearing 22 is sleeved on the fourth step 64, the positioning sleeve 31 is sleeved on the fifth step 65, and the second bearing 23 is sleeved on the first step 61. In this way, the first bearing 22, the positioning sleeve 31, and the second bearing 23 can be prevented from moving in the axial direction of the connecting shaft 60. Further, the connecting shaft 60 is further provided with a sixth step 66 located between the fifth step 65 and the first step 61, the step surfaces of the fourth step 64, the fifth step 65 and the sixth step 66 are gradually far away from the axis of the connecting shaft 60, and the step surfaces of the sixth step 66, the first step 61, the second step 62 and the third step 63 are gradually close to the axis of the connecting shaft 60. One side surface of the sixth step 66 is abutted against the positioning sleeve 31, and the other side surface of the sixth step 66 is abutted against and matched with the second bearing 23.

Referring to fig. 1, 4, and 13 to 15, fig. 13 shows a structure diagram of one viewing angle of a protective shell 95 according to an embodiment of the present invention, fig. 14 shows a structure diagram of another viewing angle of the protective shell 95 according to an embodiment of the present invention, and fig. 15 shows a structure diagram of another viewing angle of the protective shell 95 according to an embodiment of the present invention. In one embodiment, the shaft end power generation device further comprises a protective shell 95. The protective shell 95 covers the positioning member 70 and the outer shell 21. Thus, the protective shell 95 protects both the positioning member 70 and the outer housing 21.

It should be noted that the protective shell 95 of this embodiment has certain elasticity while having certain intensity, can bear certain impact, can produce deformation when receiving foreign matter to collide with and strike simultaneously again to the preliminary buffering comes from foreign matter such as external flying stone to collide with and assault.

Referring to fig. 1, 4, and 13 to 15, the protective shell 95 further includes a first housing 951 and a second housing 952 communicating with the first housing 951, the first housing 951 is covered outside the outer shell 21, and the second housing 952 is covered outside the positioning member 70.

Referring to fig. 1, 4, and 13 to 15, the protective housing 95 further includes a third housing 953 in communication with the first housing 951. The third housing 953 is formed by a face plate of the first housing 951 being convex outward in a direction away from the mount 10, and the third housing 953 is provided over an end of the connecting shaft 60.

Referring to fig. 1, 4, and 13 to 15, further, a panel of the second casing 952 abuts against the positioning main board 71, and an escape opening for passing through an end of the connecting shaft 60 is formed in the panel of the second casing 952.

Further, the faceplate of second shell 952 is removably connected to positioning main plate 71 by second mounting member 96. In this embodiment, mount two 96 is a short terminal pin. The short terminal pin passes through the positioning main plate 71 and the panel of the second cover shell 952 and then is connected with the collar 97. Alternatively, the second mounting member 96 may be a bolt, a screw, a pin, etc., which is not limited herein. Correspondingly, a first mounting hole 712 corresponding to the second mounting member 96 is formed in the positioning main board 71, a second mounting hole 9521 corresponding to the first mounting hole 712 is formed in a panel of the second casing 952, and the second mounting member 96 passes through the first mounting hole 712 and the second mounting hole 9521 to fixedly connect the positioning main board 71 and the panel of the second casing 952.

Referring to fig. 4, in an embodiment, a railway vehicle comprises the axle end power generation device of any one of the embodiments, and further comprises a main body structure 82 and an axle 81 rotatably arranged on the main body structure 82. The mounting seat 10 is fixedly mounted on the end of the axle 81, and the other end of the connecting shaft 60 is in limit fit with the main structure 82 through the positioning member 70.

In the railway vehicle, the mounting seat 10 is fixedly mounted at the end of the axle 81 of the vehicle, and the connecting shaft 60 is in limit fit with the main structure 82 of the vehicle through the positioning piece 70, so that during the running process of the vehicle, the end of the axle 81 rotates to synchronously drive the rotor assembly to rotate, the stator assembly 30 is fixed on the connecting shaft 60 and keeps relatively static with the main structure 82 of the vehicle, and thus the rotor assembly rotates relative to the stator assembly 30, so that the kinetic energy generated by the rotating motion of the axle 81 during the running of the railway vehicle can be utilized to generate electricity. Wherein, locating part 50 sets up on bounding wall 12 and contradicts so that damping elastic block 40 is in between bedplate 11 and shell body 21 with pretension compression state, so on the one hand, locating part 50 and damping elastic block 40 can avoid the vehicle vibration in-process to cause the damage for axle head power generation facility, on the other hand, can make the rotor subassembly remain relative static with mount pad 10 throughout, can avoid the axial rebound of rotor subassembly, make mount pad 10 and rotor subassembly fixed together, mount pad 10 and rotor subassembly keep setting up with the axle center, avoid the adverse effect because of the installation is eccentric to bring in the axle head power generation facility operation process, installation stability on axletree 81 tip is better, be favorable to realizing continuously stably supplying power for the consumer on the railway vehicle.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. An axle end power generation device, characterized in that axle end power generation device includes:

one end of the connecting shaft penetrates through the outer shell and extends into the outer shell, the other end of the connecting shaft is used for being in limit fit with a main structure of the vehicle through the positioning piece, the stator assembly is fixedly arranged on the connecting shaft, and the outer shell is rotatably arranged on the connecting shaft through a bearing; a flange is circumferentially wound on the outer wall of the outer shell and is in interference fit with the inner wall of the enclosing plate; the limiting piece is a check ring, a groove is wound on the inner wall of the enclosing plate, the check ring is arranged in the groove, and a part of the check ring protrudes out of the groove and is abutted against the flange; the axial section of the retainer ring is a circular surface or an elliptical surface; the inner wall surface of the groove is a first arc-shaped concave surface and is adaptive to the wall surface of the retainer ring; and a second arc-shaped concave surface is arranged at the position, in contact with the check ring, of the flange, and the second arc-shaped concave surface is matched with the wall surface of the check ring.

2. The shaft end power generation device of claim 1, wherein the pre-tightening force of the vibration-damping elastic block is 300-1500N.

3. The shaft end power generation device of claim 1, wherein one end surface of the damping elastic block is provided with a first bump, a surface of the seat plate is provided with a first concave part adapted to the first bump, and the first bump is arranged in the first concave part; and a second convex block is arranged on the other end face of the vibration-damping elastic block, a second concave part which is matched with the second convex block is arranged on the surface of the outer shell, and the second convex block is arranged in the second concave part.

4. The shaft end power generation device as claimed in claim 3, wherein the number of the first protrusions is several, and the several first protrusions are uniformly distributed on one end surface of the vibration damping elastic block in a surrounding manner by taking the shaft center of the vibration damping elastic block as a center; the second bumps are uniformly distributed on the other end face of the vibration-damping elastic block in a surrounding mode by taking the axis of the vibration-damping elastic block as a center.

5. The shaft end power generation device of claim 1, wherein the vibration-damping elastic block is a wear-resistant rubber block; the middle part of the end face, facing the outer shell, of the vibration-damping elastic block is provided with a third concave part, the outer shell is provided with a first protruding part which is adaptive to the three phases of the concave parts, and the first protruding part is arranged in the third concave part.

6. The shaft end power generation device of claim 1, wherein the mounting seat is fixedly mounted to the end portion of the axle by a mounting member; or the mounting seat is fixedly arranged at the end part of the axle in an adhering way; or the mounting seat is fixedly clamped at the end part of the axle; or the mounting seat is welded and fixed at the end part of the axle.

7. The shaft end power generation device of claim 6, wherein the first mounting member is a shaft end bolt, and the shaft end bolt penetrates through the seat plate and is fixedly mounted on the end face of the end part of the axle; the mounting pieces I are arranged on the seat plate in a winding mode at equal intervals by taking the axis of the seat plate as a center; the vibration-damping elastic block is provided with a hollowed-out area, the shaft end bolt is located in the hollowed-out area, and the surrounding plate is provided with an observation window communicated with the hollowed-out area.

8. The shaft end power generation apparatus of claim 1, wherein the rotor assembly further comprises a magnet fixedly disposed on the outer housing; the stator assembly comprises a positioning sleeve and an injection molding coil, the positioning sleeve is fixedly arranged on the connecting shaft, and the injection molding coil is arranged on the positioning sleeve.

9. The shaft end power generation device of claim 1, wherein the outer housing comprises a first split housing and a second split housing that are spliced together; the first split shell is abutted to the vibration reduction elastic block, and the second split shell is abutted to the limiting piece.

10. The shaft end power generation device of claim 9, wherein the splicing part of the first split shell and the second split shell is provided with a first sealing ring; the second split shell is provided with a first shaft hole for the connecting shaft to pass through, a second sealing ring is arranged on the hole wall of the first shaft hole, and the connecting shaft is sleeved with the second sealing ring.

11. The shaft end power generation device of claim 9, wherein the bearing comprises a first bearing and a second bearing; a fourth concave part which is matched with the first bearing is arranged at the middle part of the inner wall surface of the first split shell, and a fifth concave part which is matched with the second bearing is arranged at the middle part of the inner wall surface of the second split shell; the first bearing is accommodated in the fourth concave part, and the second bearing is accommodated in the fifth concave part.

12. The shaft end power generation device of claim 1, wherein the coaming is provided with a material taking port, and the material taking port is communicated with the groove; the retainer ring is provided with a notch section.

13. An axial end power generation device according to claim 12, wherein the material taking opening is provided in a plurality, and the plurality of material taking openings are arranged around the surrounding plate at intervals.

14. The shaft end power generation device of claim 1, wherein the positioning element comprises a positioning main plate and two positioning support plates respectively connected with two ends of the positioning main plate; the positioning main board is connected with the connecting shaft, and the positioning support plate is used for being in limit fit with the main structure of the vehicle.

15. A shaft end power plant as recited in claim 14, wherein the ends of the locating strip are adapted for contacting engagement with the bottom surface of the load-bearing saddle of the host structure.

16. The shaft end power generation device of claim 15, wherein a vibration damping buffer layer is arranged on one end surface of the positioning support plate far away from the positioning main plate, and the positioning support plate is used for being in contact fit with the bottom surface of the bearing saddle through the vibration damping buffer layer.

17. The shaft end power generation device of claim 14, wherein the positioning main plate is provided with a second shaft hole for the connecting shaft to pass through, a damping shaft sleeve is arranged in the second shaft hole, and the damping shaft sleeve is sleeved on the connecting shaft.

18. The shaft end power generation device of claim 17, wherein the outer wall surface of the damping sleeve is adapted to the inner wall surface of the second shaft hole, and the inner wall surface of the damping sleeve is adapted to the outer wall surface of the connecting shaft; the outer wall surface of the damping shaft sleeve is a non-circular surface, and the inner wall surface of the damping shaft sleeve is a non-circular surface.

19. The shaft end power generation device of claim 17, further comprising a first stop plate, a second stop plate and a locking member, wherein the connecting shaft is provided with a first step, a second step and a third step; first backstop board is fixed locate on the second step, one of them side of first backstop board with first step is inconsistent, the another side of first backstop board with one of them side of location mainboard is inconsistent, damping axle sleeve cover is established and is fixed in on the second step, second backstop board cover is established and is fixed in on the third step, the second step reaches the another side of location mainboard all with one of them side of second backstop board is inconsistent, the another side of second backstop board with the locking piece is inconsistent, the locking piece is fixed set up in on the third step.

20. The shaft end power generation device of claim 19, wherein the locking member is a locking nut, the locking nut is sleeved and fixed on the connecting shaft, and the shaft end power generation device further comprises a lock washer disposed between the second stop plate and the locking nut.

21. An axial-end power generation device according to claim 14, further comprising a protective housing, wherein the protective housing is covered outside the positioning member and the outer housing.

22. An axial-end power generation device according to claim 21, wherein the protective housing comprises a first housing and a second housing in communication with the first housing, the first housing is disposed outside the housing, and the second housing is disposed outside the positioning member.

23. The shaft end power generation device of claim 22, wherein the shield further comprises a third housing shell in communication with the first housing shell, the third housing shell is formed by a face plate of the first housing shell protruding outward in a direction away from the mounting seat, and the third housing shell is arranged outside an end portion of the connecting shaft.

24. The shaft end power generation device of claim 22, wherein the panel of the second housing abuts against the positioning main board, and an avoiding opening for the end of the connecting shaft to pass through is formed in the panel of the second housing.

25. The axial end power generation device of claim 24, wherein the faceplate of the second housing is removably connected to the positioning main plate by a second mounting member.

26. A railway vehicle, characterized in that the railway vehicle comprises the shaft end power generation device as claimed in any one of claims 1 to 25, and further comprises a main structure and a shaft rotatably arranged on the main structure, the mounting seat is fixedly arranged at the end part of the shaft, and the other end of the connecting shaft is in limit fit with the main structure through the positioning piece.