CN214154248U - Damping shaft sleeve, shaft end power generation device and railway vehicle - Google Patents

Abstract

The utility model relates to a damping axle sleeve, axle head power generation facility and rail vehicle, damping axle sleeve includes the axle sleeve body. The shaft sleeve body is used for being sleeved on a connecting shaft of the shaft end power generation device and sleeved in a first shaft hole of the positioning piece. The inner wall surface of the shaft sleeve body is used for being matched with the outer wall surface of the connecting shaft, the outer wall surface of the shaft sleeve body is used for being matched with the inner wall surface of the first shaft hole, and the outer wall surface of the shaft sleeve body and the inner wall surface of the shaft sleeve body are non-circular surfaces. The shaft sleeve body is a vibration-damping elastic sleeve. The shaft sleeve body is fixedly sleeved on the connecting shaft and cannot rotate relative to the connecting shaft, and the shaft sleeve body is fixedly sleeved in the first shaft hole and cannot rotate in the first shaft hole, so that the connecting shaft and the positioning piece are in a relatively fixed relation, the connecting shaft can be in limit fit with a main structure of a vehicle through the positioning piece, and the main structure prevents the connecting shaft from rotating through the positioning piece.

Description

Damping shaft sleeve, shaft end power generation device and railway vehicle

Technical Field

The utility model relates to a power generation facility technical field especially relates to a damping axle sleeve, axle head power generation facility and 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 increase of the demand of the user for the management and control of 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. A power generation device, which is disposed at an end of a railway vehicle axle and uses kinetic energy generated by rotational movement of the axle during running of the railway vehicle, has been developed, and the power generation device uses a manner in which a rotor assembly and a stator assembly generate relative movement to generate current to generate power. Therefore, need carry out effectual spacing fixedly in power generation facility to stator module to keep the free rotation of rotor subassembly, in order to guarantee the relative rotation between stator module and the rotor subassembly, and the vehicle must receive impact and vibration from external world and on the vehicle at the operation in-process, if impact and vibration that power generation facility received are too big, can seriously influence power generation facility's power generation effect, thereby cause the unstability to the mobile unit power supply, influence the normal use of equipment.

SUMMERY OF THE UTILITY MODEL

Therefore, the defects of the prior art need to be overcome, and the damping shaft sleeve, the shaft end power generation device and the railway vehicle are provided, so that the installation stability of the shaft end power generation device on the shaft end part can be improved, and continuous and stable power supply can be realized for electric equipment on the railway vehicle.

The technical scheme is as follows: a vibration damping shaft sleeve comprises a shaft sleeve body, wherein the shaft sleeve body is used for being sleeved on a connecting shaft of a shaft end power generation device and sleeved in a first shaft hole of a positioning piece, the inner wall surface of the shaft sleeve body is used for being matched with the outer wall surface of the connecting shaft, the outer wall surface of the shaft sleeve body is used for being matched with the inner wall surface of the first shaft hole, and the outer wall surface of the shaft sleeve body and the inner wall surface of the shaft sleeve body are non-circular surfaces; the shaft sleeve body is a vibration-damping elastic sleeve.

Foretell damping axle sleeve owing to install in the outside of axle head power generation facility's connecting axle to and the cover is located the first axle hole of setting element, and the axle sleeve body is the damping elastic sleeve, and the connecting axle is located through damping axle sleeve cover to the mainboard of fixing a position like this on, comes vibration and the impact on external world or the vehicle through damping axle sleeve buffering like this, thereby improves axle head power generation facility's stability, prolongs axle head power generation facility's life. In addition, because the internal face of axle sleeve body be used for with the outer wall of connecting axle is identical, the outer wall of axle sleeve body be used for with the internal face in first shaft hole is identical, the outer wall of axle sleeve body with the internal face of axle sleeve body is the non-circular face, and the axle sleeve body is located on the connecting axle for fixed cover like this, can not rotate for the connecting axle, and in the first shaft hole was located for fixed ground cover to the axle sleeve body, can not rotate in first shaft hole equally to the connecting axle is relative fixed relation with the setting element, and the connecting axle can pass through the major structure limit fit of setting element and vehicle, avoids the connecting axle to rotate through the setting element by major structure.

In one embodiment, the shaft sleeve body comprises an arc-shaped section and a straight section, and two ends of the straight section are respectively and correspondingly connected with two ends of the arc-shaped section.

In one embodiment, the sleeve body is a rubber sleeve, a plastic sleeve, a silica gel sleeve or a reed sleeve.

In one embodiment, a first detachable stop plate is arranged on one end face of the shaft sleeve body and is used for abutting against one side of the positioning piece; the other end face of the shaft sleeve body is provided with a detachable second stop board, and the second stop board is used for abutting against the other side of the positioning piece.

In one embodiment, a first clamping piece is arranged on one end face of the shaft sleeve body, a first clamping hole matched with the first clamping piece is formed in the first stop plate, and the first clamping piece is clamped and fixed in the first clamping hole; and a second clamping piece is arranged on the other end face of the shaft sleeve body, a second clamping hole matched with the second clamping piece is formed in the second stop plate, and the second clamping piece is clamped and fixed in the second clamping hole.

The utility model provides a shaft end axle head power generation facility, shaft end power generation facility include the damping axle sleeve, shaft end power generation facility still includes:

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 limiting piece is arranged on the coaming and is abutted against the outer shell;

the connecting shaft and the positioning piece, connecting shaft one end runs through the shell body stretches into in the shell body, the other pot head of connecting shaft is established and is fixed in the axle sleeve is originally internal, the axle sleeve body is fixed set up in the primary shaft of positioning piece is downthehole, 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 mounting seat is fixedly arranged at the axle end of the vehicle, the connecting shaft is in limit 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 during running of the railway vehicle can be utilized to generate electricity. In addition, because install in the outside of axle head power generation facility's connecting axle to and the cover is located the first axle hole of setting element, the axle sleeve body is the damping elastic sleeve, and the mainboard of fixing a position like this passes through the damping axle sleeve cover and locates on the connecting axle, comes from vibration and the impact on external world or the vehicle through the damping axle sleeve buffering like this, thereby improves axle head power generation facility's stability, prolongs axle head power generation facility's life. In addition, because the internal face of axle sleeve body be used for with the outer wall of connecting axle is identical, the outer wall of axle sleeve body be used for with the internal face in first shaft hole is identical, the outer wall of axle sleeve body with the internal face of axle sleeve body is the non-circular face, and the axle sleeve body is located on the connecting axle for fixed cover like this, can not rotate for the connecting axle, and in the first shaft hole was located for fixed ground cover to the axle sleeve body, can not rotate in first shaft hole equally to the connecting axle is relative fixed relation with the setting element, and the connecting axle can pass through the major structure limit fit of setting element and vehicle, avoids the connecting axle to rotate through the setting element by major structure.

In one embodiment, the positioning element comprises a positioning main board and a positioning support board connected with the positioning main board; the first shaft hole is formed in the positioning main board, and the positioning support plate is used for being in limit fit with a main body structure of a vehicle.

In one embodiment, the end of the positioning support plate is used for contacting and matching with the bottom surface of the bearing saddle of the main body structure.

In one embodiment, 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.

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

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. In addition, because install in the outside of axle head power generation facility's connecting axle to and the cover is located the first axle hole of setting element, the axle sleeve body is the damping elastic sleeve, and the mainboard of fixing a position like this passes through the damping axle sleeve cover and locates on the connecting axle, comes from vibration and the impact on external world or the vehicle through the damping axle sleeve buffering like this, thereby improves axle head power generation facility's stability, prolongs axle head power generation facility's life. In addition, because the internal face of axle sleeve body be used for with the outer wall of connecting axle is identical, the outer wall of axle sleeve body be used for with the internal face in first shaft hole is identical, the outer wall of axle sleeve body with the internal face of axle sleeve body is the non-circular face, and the axle sleeve body is located on the connecting axle for fixed cover like this, can not rotate for the connecting axle, and in the first shaft hole was located for fixed ground cover to the axle sleeve body, can not rotate in first shaft hole equally to the connecting axle is relative fixed relation with the setting element, and the connecting axle can pass through the major structure limit fit of setting element and vehicle, avoids the connecting axle to rotate through the setting element by major structure.

Drawings

Fig. 1 is a schematic structural view illustrating a shaft end power generation device according to an embodiment of the present invention installed at a shaft end;

fig. 2 is a schematic structural view of a damping bushing according to an embodiment of the present invention;

fig. 3 is a structural diagram of the positioning element fixedly installed on the connecting shaft according to an embodiment of the present invention;

fig. 4 is a view structural diagram of one of the positioning members according to an embodiment of the present invention;

fig. 5 is another view structural diagram of the positioning element according to an embodiment of the present invention;

fig. 6 is a view of a positioning member according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a shaft end power generation device according to an embodiment of the present invention;

FIG. 8 is an enlarged schematic view of FIG. 7 at A;

fig. 9 is a schematic view of another perspective structure of a shaft end power generation device according to an embodiment of the present invention;

fig. 10 is a view structural diagram of one of the vibration damping elastic blocks according to an embodiment of the present invention;

fig. 11 is another view structural diagram of the damping elastic block according to an embodiment of the present invention;

fig. 12 is a view showing another perspective structure of the vibration damping elastic block according to an embodiment of the present invention;

fig. 13 is a view structural diagram of one of the protection shells according to an embodiment of the present invention;

fig. 14 is another view structural diagram of a protective shell according to an embodiment of the present invention;

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

10. A mounting seat; 11. a seat plate; 111. a first recess; 12. enclosing plates; 121. an observation window; 122. a groove; 123. a material taking port; 13. a first mounting member; 21. an outer housing; 211. a first split shell; 2111. a fourth recess; 212. a second split shell; 2121. a second shaft hole; 2122. a fifth recess; 213. a flange; 2131. a second arc-shaped concave surface; 214. a second recess; 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 recess; 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 first shaft hole; 712. a first mounting hole; 72. positioning a support plate; 73. a damping buffer layer; 74. a vibration damping shaft sleeve; 741. an arc-shaped section; 742. a straight section; 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 mount; 97. a collar.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 4, fig. 1 shows that the utility model discloses an axle head power generation facility of embodiment installs in the schematic structure view of axletree 81 tip, and fig. 2 shows the utility model discloses a damping axle sleeve 74's schematic structure view, fig. 3 shows the utility model discloses a setting element 70 of embodiment is fixed and is installed in the structure view of connecting axle 60, and fig. 4 shows the utility model discloses a setting element 70's of an embodiment one of them visual angle structure view. An embodiment of the utility model provides a pair of damping axle sleeve 74, damping axle sleeve 74 includes the axle sleeve body. The shaft sleeve body is used for being sleeved on the connecting shaft 60 of the shaft end power generation device and being sleeved in the first shaft hole 711 of the positioning member 70. The inner wall surface of the sleeve body is adapted to be fitted with the outer wall surface of the connecting shaft 60, the outer wall surface of the sleeve body is adapted to be fitted with the inner wall surface of the first shaft hole 711, and the outer wall surface of the sleeve body and the inner wall surface of the sleeve body are non-circular surfaces. The shaft sleeve body is a vibration-damping elastic sleeve.

The damping bushing 74 is installed outside the connecting shaft 60 of the shaft end power generation device and is sleeved in the first shaft hole 711 of the positioning member 70, the bushing body is a damping elastic bushing, so that the positioning main board 71 is sleeved on the connecting shaft 60 through the damping bushing 74, and vibration and impact from the outside or on a vehicle are buffered through the damping bushing 74, so that the stability of the shaft end power generation device is improved, and the service life of the shaft end power generation device is prolonged. In addition, because the inner wall surface of the sleeve body is used for being matched with the outer wall surface of the connecting shaft 60, the outer wall surface of the sleeve body is used for being matched with the inner wall surface of the first shaft hole 711, and the outer wall surface of the sleeve body and the inner wall surface of the sleeve body are both non-circular surfaces, the sleeve body is fixedly sleeved on the connecting shaft 60 and cannot rotate relative to the connecting shaft 60, and the sleeve body is fixedly sleeved in the first shaft hole 711 and cannot rotate in the first shaft hole 711, so that the connecting shaft 60 and the positioning member 70 are in a relatively fixed relation, the connecting shaft 60 can be in spacing fit with the main structure 82 of the vehicle through the positioning member 70, and the main structure 82 prevents the connecting shaft 60 from rotating through the positioning member 70.

The 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, a D-shape, and the like, and is not limited to this and is not listed here.

Referring to fig. 2, in an embodiment, the bushing body includes an arc section 741 and a straight section 742, and two ends of the straight section 742 are respectively connected to two ends of the arc section 741.

It should be noted that, in infringement comparison, the "straight section 742" may be a part of the "arc-shaped section 741", that is, the "straight section 742" and the "other part of the arc-shaped section 741" are integrally formed; alternatively, a separate member that is separable from the other part of the arc section 741, that is, the straight section 742 may be manufactured separately and then integrated with the other part of the arc section 741. In one embodiment, as shown in FIG. 2, the "straight section 742" is a part of the "curved section 741" that is integrally formed.

In this embodiment, the arc-shaped section 741 has an angle of 180 degrees to 320 degrees, specifically, for example, 180 degrees, 240 degrees, 260 degrees, 280 degrees, 300 degrees, or 320 degrees.

In one embodiment, the sleeve body is a rubber sleeve, a plastic sleeve, a silicone sleeve or a reed sleeve.

Referring to fig. 3, in an embodiment, one end surface of the bushing body is provided with a detachable first stop plate 91, and the first stop plate 91 is used for abutting against one side of the positioning member 70; the other end surface of the sleeve body is provided with a detachable second stop plate 92, and the second stop plate 92 is used for abutting against the other side of the positioning member 70. Thus, the first and second stop plates 91 and 92 are clamped by the opposite sides of the positioning member 70, so as to prevent the damping bushing 74 from moving in the axial direction of the connecting shaft 60, and ensure that the damping bushing 74 is stably sleeved in the first shaft hole 711.

Further, one end face of the shaft sleeve body is provided with a first clamping piece (not shown), the first stop plate 91 is provided with a first clamping hole matched with the first clamping piece, and the first clamping piece is clamped and fixed in the first clamping hole. In addition, a second clamping piece is arranged on the other end face of the shaft sleeve body, a second clamping hole matched with the second clamping piece is formed in the second stop plate 92, and the second clamping piece is clamped and fixed in the second clamping hole. Thus, the first and second stopper plates 91, 92 can be quickly attached to and fixed to both end surfaces of the boss body.

Alternatively, the first stop plate 91 and the second stop plate 92 may be detachably fixed to the end surface of the shaft sleeve body by fasteners such as screws, bolts, pins, rivets, and the like, which is not limited herein.

Alternatively, the first clip member may be disposed on the first stop plate 91, and the first clip hole is disposed on the end surface of the shaft sleeve body. Similarly, a second clip member may be disposed on the second stopper plate 92, and a second clip hole may be disposed on the end surface of the sleeve body.

Referring to fig. 1, 7 and 8, fig. 7 shows a schematic structural diagram of a shaft end power generation device according to an embodiment of the present invention, and fig. 8 shows an enlarged schematic structural diagram of fig. 7 at a. In one embodiment, a shaft end power generation device, the shaft end power generation device includes the damping sleeve 74 of any of the above embodiments, and the shaft end power generation device further includes: the mounting, rotor assembly, stator assembly 30, stop 50, connecting shaft 60 and positioning member 70. The mount 10 is used to fix an end of an axle 81 mounted on a vehicle. The mounting seat 10 comprises a seat plate 11 and a surrounding plate 12 arranged around the circumferential direction of the seat plate 11, wherein the surrounding plate 12 and the seat plate 11 surround to form a cavity. The rotor assembly includes an outer housing 21, and the stator assembly 30 is disposed inside the outer housing 21, and the outer housing 21 is disposed in the chamber. The stopper 50 is disposed on the shroud 12 and abuts against the outer case 21. One end of the connecting shaft 60 penetrates through the outer shell 21 and extends into the outer shell 21, the other end of the connecting shaft 60 is sleeved and fixed in the shaft sleeve body, the shaft sleeve body is fixedly arranged in a first shaft hole 711 of the positioning element 70, the positioning element 70 is used for limiting and matching with a main structure 82 of a vehicle, the stator assembly 30 is fixedly arranged on the connecting shaft 60, and the outer shell 21 is rotatably arranged 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. In addition, because the shaft sleeve body is a vibration damping elastic sleeve which is arranged outside the connecting shaft 60 of the shaft end power generation device and sleeved in the first shaft hole 711 of the positioning piece 70, the positioning main plate 71 is sleeved on the connecting shaft 60 through the vibration damping shaft sleeve 74, and vibration and impact from the outside or on a vehicle are buffered through the vibration damping shaft sleeve 74, so that the stability of the shaft end power generation device is improved, and the service life of the shaft end power generation device is prolonged. In addition, because the inner wall surface of the sleeve body is used for being matched with the outer wall surface of the connecting shaft 60, the outer wall surface of the sleeve body is used for being matched with the inner wall surface of the first shaft hole 711, and the outer wall surface of the sleeve body and the inner wall surface of the sleeve body are both non-circular surfaces, the sleeve body is fixedly sleeved on the connecting shaft 60 and cannot rotate relative to the connecting shaft 60, and the sleeve body is fixedly sleeved in the first shaft hole 711 and cannot rotate in the first shaft hole 711, so that the connecting shaft 60 and the positioning member 70 are in a relatively fixed relation, the connecting shaft 60 can be in limit fit with the main structure 82 of the vehicle through the positioning member 70, and the main structure 82 prevents the connecting shaft 60 from rotating through the positioning member 70.

Referring to fig. 1, 4 to 6, fig. 5 shows another view structure diagram of the positioning member 70 according to an embodiment of the present invention, and fig. 6 shows another view structure diagram of the positioning member 70 according to an embodiment of the present invention. Further, the positioning member 70 includes a positioning main plate 71 and a positioning support plate 72 connected to the positioning main plate 71. The first shaft hole 711 is provided in the positioning main plate 71, and the positioning stay 72 is used for being in limit fit with the 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. 4 to 6, in one embodiment, the "positioning support 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. 1, 4-6, further, 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. 1, 4-6, in one embodiment, a vibration damping buffer layer 73 is disposed on an end surface of the positioning plate 72 away from the positioning main plate 71, and the positioning plate 72 is adapted to be in contact with the bottom surface of the bearing saddle via 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. 5, 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.

Further, the shaft end power generation device further includes a vibration damping elastic block 40. The damping elastic block 40 is arranged in the cavity, the outer shell 21 is connected with the seat plate 11 through the damping elastic block 40, and the damping elastic block 40 is arranged between the seat plate 11 and the outer shell 21 in a pre-tightening compression state. So on the one hand, 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 relatively 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 that axle head power generation facility operation in-process brought because of the installation is eccentric, installation stability on axletree 81 tip is better, be favorable to realizing the last consumer of being railway vehicle and continuously stably supplying power.

Referring to fig. 1, 7 and 8, 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. 7, 10 to 12, fig. 10 shows a view angle structure diagram of one of the damping elastic blocks 40 according to an embodiment of the present invention, fig. 11 shows another view angle structure diagram of the damping elastic block 40 according to an embodiment of the present invention, and fig. 12 shows another view angle structure diagram of the 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, a second protrusion 42 is provided on the other end surface of the vibration-damping elastic block 40, a second recess 214 corresponding to the second protrusion 42 is provided on the surface of the outer housing 21, and the second protrusion 42 is provided 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 protrusions 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 protrusions 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 the first 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 third recess 43, and the outer housing 21 is provided with a first projection adapted to the third recess 43, the first projection being provided in the third recess 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 third recess 43, the outer case 21 and the damper elastic block 40 are firmly bonded 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, or the like, which is not limited herein.

Referring to fig. 9 to 11, fig. 9 is a schematic view illustrating another perspective structure of the shaft end power generation device according to an embodiment of the present invention. Further, the first mounting member 13 is a shaft end bolt, and the shaft end bolt is inserted through the seat plate 11 and fixedly mounted on the end surface of the end portion of the axle 81. In addition, the number of the first mounting pieces 13 is several, and the several first mounting pieces 13 are wound around the seat plate 11 at equal intervals with 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, 7 and 8, 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, 7 and 8, 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, 7 and 8, 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 housing 212 is provided with a second shaft hole 2121 for the connection shaft 60 to pass through, a second sealing ring 26 is provided on the hole wall of the second shaft hole 2121, and the second sealing ring 26 is sleeved on the connection 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 impurities such as dust, rainwater and the like from entering the inner part of the outer shell 21, so that the service life of the shaft end power generation device can be prolonged.

Referring to fig. 1, 7 and 8, 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 fourth recess 2111, and the second bearing 23 is accommodated in the fifth recess 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 concave portion 2111 is formed by the middle portion of the first split case 211 protruding toward the damping elastic block 40, and the fifth concave portion 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, 7 and 8, 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, 7 and 8, in one embodiment, the position-limiting member 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, 7 and 8, the outer shell 21 illustrated in fig. 8 has not yet been 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. 8 and 9, 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. 3, fig. 3 is a structural diagram illustrating that the positioning element 70 is fixedly installed on the connecting shaft 60 according to an embodiment of the present invention. Further, the shaft end power generation device further comprises 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. 3, 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. 1, 3 and 8, a fourth step 64 and a fifth step 65 are further disposed on the connecting shaft 60. 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, 8, 13 to 15, fig. 13 shows a view structure diagram of a protective shell 95 according to an embodiment of the present invention, fig. 14 shows another view structure diagram of the protective shell 95 according to an embodiment of the present invention, and fig. 15 shows another view structure diagram 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, 8, 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, 8, 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 the second cover 952 is detachably connected to the positioning main plate 71 by the second mounting member 96. In this embodiment, the second mount 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 element 96 may also be a bolt, screw, pin, etc., without limitation. 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 together.

Referring to fig. 1 again, in one embodiment, a railway vehicle comprises the axle end power generation device of any one of the above embodiments, and further comprises a main body structure 82 and an axle 81 rotatably disposed on the main body structure 82. The mounting seat 10 is fixedly mounted on the end of the axle 81, and the positioning member 70 is in limit fit with the main structure 82.

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. In addition, because the shaft sleeve body is a vibration damping elastic sleeve which is arranged outside the connecting shaft 60 of the shaft end power generation device and sleeved in the first shaft hole 711 of the positioning piece 70, the positioning main plate 71 is sleeved on the connecting shaft 60 through the vibration damping shaft sleeve 74, and vibration and impact from the outside or on a vehicle are buffered through the vibration damping shaft sleeve 74, so that the stability of the shaft end power generation device is improved, and the service life of the shaft end power generation device is prolonged. In addition, because the inner wall surface of the sleeve body is used for being matched with the outer wall surface of the connecting shaft 60, the outer wall surface of the sleeve body is used for being matched with the inner wall surface of the first shaft hole 711, and the outer wall surface of the sleeve body and the inner wall surface of the sleeve body are both non-circular surfaces, the sleeve body is fixedly sleeved on the connecting shaft 60 and cannot rotate relative to the connecting shaft 60, and the sleeve body is fixedly sleeved in the first shaft hole 711 and cannot rotate in the first shaft hole 711, so that the connecting shaft 60 and the positioning member 70 are in a relatively fixed relation, the connecting shaft 60 can be in limit fit with the main structure 82 of the vehicle through the positioning member 70, and the main structure 82 prevents the connecting shaft 60 from rotating through the positioning member 70.

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 examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present 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," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 (10)

1. A vibration damping shaft sleeve is characterized by comprising a shaft sleeve body, wherein the shaft sleeve body is used for being sleeved on a connecting shaft of a shaft end power generation device and being sleeved in a first shaft hole of a positioning piece, the inner wall surface of the shaft sleeve body is used for being matched with the outer wall surface of the connecting shaft, the outer wall surface of the shaft sleeve body is used for being matched with the inner wall surface of the first shaft hole, and the outer wall surface of the shaft sleeve body and the inner wall surface of the shaft sleeve body are non-circular surfaces; the shaft sleeve body is a vibration-damping elastic sleeve.

2. The damping sleeve according to claim 1, wherein the sleeve body comprises an arc-shaped section and a straight section, and two ends of the straight section are respectively connected with two ends of the arc-shaped section.

3. The vibration damping bushing according to claim 1, wherein the bushing body is a rubber bushing, a plastic bushing, a silicone bushing, or a spring bushing.

4. The damping bushing according to claim 1, wherein a first removable stop plate is disposed on one end surface of the bushing body, and the first stop plate is configured to abut against one side of the positioning element; the other end face of the shaft sleeve body is provided with a detachable second stop board, and the second stop board is used for abutting against the other side of the positioning piece.

5. The vibration damping shaft sleeve according to claim 4, wherein a first clamping piece is arranged on one end face of the shaft sleeve body, a first clamping hole matched with the first clamping piece is formed in the first stop plate, and the first clamping piece is clamped and fixed in the first clamping hole; and a second clamping piece is arranged on the other end face of the shaft sleeve body, a second clamping hole matched with the second clamping piece is formed in the second stop plate, and the second clamping piece is clamped and fixed in the second clamping hole.

6. An axial end power plant, characterized in that the axial end power plant comprises the damper bushing according to any one of claims 1 to 5, and the axial end power plant further comprises:

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 limiting piece is arranged on the coaming and is abutted against the outer shell;

the connecting shaft and the positioning piece, connecting shaft one end runs through the shell body stretches into in the shell body, the other pot head of connecting shaft is established and is fixed in the axle sleeve is originally internal, the axle sleeve body is fixed set up in the primary shaft of positioning piece is downthehole, 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.

7. The shaft end power generation device of claim 6, wherein the positioning element comprises a positioning main plate and a positioning support plate connected with the positioning main plate; the first shaft hole is formed in the positioning main board, and the positioning support plate is used for being in limit fit with a main body structure of a vehicle.

8. A shaft end power generation device as recited in claim 7, wherein the end of the locating support plate is configured for contacting engagement with a bottom surface of a load-bearing saddle of the host structure.

9. The shaft end power generation device of claim 8, 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.

10. A railway vehicle, wherein the railway vehicle comprises the shaft end power generation device as claimed in any one of claims 6 to 9, 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 positioning element is in limit fit with the main structure.

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