CN111907537A

CN111907537A - Electric locomotive, electric locomotive bogie and bogie driving system

Info

Publication number: CN111907537A
Application number: CN201910538491.8A
Authority: CN
Inventors: 张志和; 姚银; 周珑; 许淑萍; 张涛
Original assignee: CRRC Datong Co Ltd
Current assignee: CRRC Datong Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-11-10
Anticipated expiration: 2039-06-20
Also published as: CN111907537B; WO2020253133A1

Abstract

The disclosure relates to the technical field of locomotives, in particular to a bogie driving system, an electric locomotive bogie and an electric locomotive. This bogie driving system includes permanent magnet traction motor, shaft coupling and wheel assembly, wherein: the permanent magnet traction motor is provided with a central hole and comprises a plurality of hangers capable of being hung on a framework of the bogie; the coupling comprises a hollow shaft, a force transmission disc, a flange plate, a first flexible plate assembly and a second flexible plate assembly; one end of the hollow shaft is connected with the flange plate, and the other end of the hollow shaft penetrates through the central hole and is connected with the transmission disc; the force transmission disc is fixedly connected with the flange disc through the first flexible sheet assembly and is fixedly connected with the permanent magnet traction motor; the wheel assembly comprises a first wheel, a second wheel and a wheel shaft, one end of the wheel shaft is connected with the first wheel, the other end of the wheel shaft penetrates through the hollow shaft and is connected with the second wheel, and the second wheel is fixedly connected with a second flexible sheet assembly on the transmission disc. The bogie driving system is simple in structure, easy to maintain and high in transmission efficiency.

Description

Electric locomotive, electric locomotive bogie and bogie driving system

Technical Field

The disclosure relates to the technical field of locomotives, in particular to a bogie driving system, an electric locomotive bogie and an electric locomotive.

Background

In recent years, with the rapid development of the railway transportation industry, electric locomotives that pull or push railway vehicles to operate have also been rapidly developed. The bogie of the electric locomotive is used for dragging the electric locomotive to run on a track and has the functions of bearing, force transmission, buffering (running) and guiding, and the bogie driving system is used for providing power for the bogie, so that the bogie driving system belongs to a key system of the electric locomotive.

In the prior art, the structure of the bogie driving system is complex, the maintenance difficulty is high, and the transmission efficiency is low, so that the bogie driving system of the same specification is difficult to simultaneously take speed and load into consideration, and further the bogie of the electric locomotive is difficult to be commonly used on a passenger electric locomotive and a freight electric locomotive.

The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.

Disclosure of Invention

The bogie driving system is simple in structure, easy to maintain and high in transmission efficiency, and further improves the universality of the electric locomotive bogie in passenger electric locomotives and freight electric locomotives.

In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:

according to an aspect of the present disclosure, there is provided a bogie driving system including:

the permanent magnet traction motor comprises a plurality of hanging pieces, and the hanging pieces can be hung on a framework of an electric locomotive bogie;

the coupling comprises a hollow shaft, a flange plate, a force transmission plate, a first flexible plate assembly and a second flexible plate assembly; one end of the hollow shaft is connected with the flange plate, and the other end of the hollow shaft penetrates through the central hole and is connected with the transmission disc; the force transmission disc is arranged on one side, close to the transmission disc, of the flange plate and is fixedly connected with the permanent magnet traction motor; the first flexure assembly is positioned between and connects the force transfer plate and the flange; the second flexible sheet component is fixed on one side, away from the flange, of the transmission disc;

a wheel assembly comprising a first wheel, a second wheel and an axle; one end of the wheel shaft is connected with the first wheel, and the other end of the wheel shaft penetrates through the hollow shaft and is connected with the second wheel; the second wheel is fixedly connected with the second flexure assembly.

In an exemplary embodiment of the present disclosure, the number of the hangers is three, and the three hangers are distributed in a triangular shape.

In an exemplary embodiment of the disclosure, a clamping groove is formed in one side, away from the flange plate, of the force transmission plate, and a clamping protrusion is formed in one side, close to the flange plate, of the permanent magnet traction motor, and the clamping groove and the clamping protrusion are clamped with each other.

In an exemplary embodiment of the present disclosure, the second flex blade assembly and the second wheel are fixedly connected by a drive pin.

In an exemplary embodiment of the present disclosure, the rim of the driving plate has a plurality of protrusions and notches arranged at intervals, the second flexure assembly is fixedly connected with the protrusions, and the driving pin is located at the notches.

According to another aspect of the present disclosure, there is provided an electric locomotive bogie including:

a frame having a first gap, a second gap, and a third gap; the first notch is positioned at one end of the framework, the second notch is positioned at the other end of the framework, and the first notch and the second notch are respectively provided with three suspension parts which are distributed in a triangular shape; the third gap is positioned between the first gap and the second gap;

the bogie driving systems are arranged in two sets, one set of the bogie driving system is arranged in the first gap, and the other set of the bogie driving system is arranged in the second gap; wherein the hanger is hung on the hanging part;

and the traction device is arranged at the third gap and is used for connecting the framework and the electric locomotive.

In an exemplary embodiment of the disclosure, the end of the hanger has an opening, an elastic mandrel is disposed in the opening, and the elastic mandrel and the hanging part are fixedly connected through a screw.

In an exemplary embodiment of the present disclosure, the elastic mandrel is a prismatic structure.

In an exemplary embodiment of the present disclosure, the elastic core shaft is externally sleeved with a rubber ring.

According to another aspect of the present disclosure, there is provided an electric locomotive comprising the electric locomotive bogie as described in any one of the above.

The disclosed bogie driving system comprises a flange plate, a first flexible sheet assembly and a force transmission plate which are fixedly connected on a coupler, wherein the force transmission plate is fixedly connected with a permanent magnet traction motor, in addition, the transmission plate is fixed on a hollow shaft, and the transmission plate, a second flexible sheet assembly and a second wheel are fixedly connected, so that the torque of the permanent magnet traction motor which penetrates through the hollow shaft can be transmitted to the hollow shaft through the force transmission plate, and then transmitted to a second wheel through the transmission plate, and the second wheel transmits the torque to the first wheel through a wheel shaft, so that the rotation of the wheel assembly can be realized.

Therefore, the bogie driving system is simple in structure and convenient to maintain, the permanent magnet traction motor is fixedly connected with the coupler and the wheel assembly, friction and power loss during transmission are small, and transmission efficiency is improved. Meanwhile, the bogie driving system does not need lubricating oil lubrication, so that the pollution of the lubricating oil to the environment is avoided.

In addition, the first flexible sheet assembly arranged between the flange plate and the force transmission plate and the second flexible sheet assembly arranged between the transmission plate and the second wheel can buffer the vibration of the permanent magnet traction motor and the wheel assembly, so that the first wheel and the second wheel can run more stably.

According to the electric locomotive bogie and the electric locomotive in the embodiment of the disclosure, the bogie driving system is adopted for electric locomotive steering, and the bogie driving system is simple in structure, high in transmission efficiency and capable of simultaneously considering both speed and load, so that the electric locomotive bogie is good in universality in passenger electric locomotives and freight electric locomotives.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural view of a bogie drive system according to an embodiment of the present disclosure.

Fig. 2 and 3 are schematic structural views of a coupling according to an embodiment of the present disclosure.

In fig. 1 to 3: 1. a permanent magnet traction motor; 10. a central bore; 11. a hanger; 12. sticking; 2. a coupling; 20. a hollow shaft; 21. a flange plate; 22. a force transfer plate; 220. a card slot; 23. a drive plate; 230. a projection; 231. a notch portion; 24. a first flex sheet assembly; 25. a second flex sheet assembly; 3. a wheel assembly; 30. a first wheel; 31. a second wheel; 32. a wheel axle; 4. a drive pin.

Fig. 4 is a schematic structural diagram of an electric locomotive bogie according to an embodiment of the disclosure.

FIG. 5 is a schematic structural diagram of a framework of an embodiment of the present disclosure.

FIG. 6 is a top view of an assembly of the disclosed embodiment frame and truck drive system.

FIG. 7 is a schematic view of the hanger and hanger assembly of the disclosed embodiment.

Fig. 8 is a schematic structural view of an elastic mandrel in accordance with an embodiment of the present disclosure.

Fig. 9 is a schematic structural view of a traction device according to an embodiment of the present disclosure.

Fig. 10 is a schematic structural view of a stone discharging and sanding device according to an embodiment of the present disclosure.

In fig. 4 to 10: 1. a frame; 10. a first notch; 100. a hanging part; 101. a support block; 11. a second notch; 12. a third notch; 2. a bogie drive system; 20. a hanger; 200. a suspension arm; 201. a boom; 202. an elastic mandrel; 203. a rubber ring; 3. a traction device; 30. a rotating arm; 300. mounting holes; 301. mounting grooves; 31. a vertical pin; 32. a traction pull rod; 320. a first end; 321. a second end; 33. a lifting rope; 4. primary suspension; 5. secondary suspension; 6. a braking device; 7. a sanding device; 70. a sand spreading pipe.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the primary technical ideas of the disclosure.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is turned upside down, the "up" component will become the "down" component. Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings.

When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure. The terms "a", "an", "the" are used to indicate the presence of one or more sets of elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.

In the related art, a driving mode that a motor drives a gearbox is usually adopted in a bogie driving system, and the gearbox comprises a plurality of groups of mutually meshed gears, a sealing structure and other components, so that the structure is complex, the maintenance difficulty is high, power loss caused by meshing of gear teeth inevitably exists, and the transmission efficiency is low.

In order to solve the above problem, the disclosed embodiment provides a bogie drive system, as shown in fig. 1, which may include a permanent magnet traction motor 1, a coupling 2, and a wheel assembly 3, wherein:

the permanent magnet traction motor 1 may have a central hole 10 and may comprise a plurality of hangers 11 capable of being suspended from the frame of the electric locomotive bogie;

the coupling 2 may comprise a hollow shaft 20, a flange 21, a force transmission disc 22, a transmission disc 23, a first flex-tab assembly 24 and a second flex-tab assembly 25, wherein: one end of the hollow shaft 20 is connected with the flange 21, and the other end passes through the central hole 10 and is connected with the transmission disc 23; the force transmission disc 22 is arranged on one side of the flange plate 21 close to the transmission disc 23 and is fixedly connected with the permanent magnet traction motor 1; a first flexure assembly 24 positioned between the flange 21 and the force transfer plate 22 and connecting the flange 21 and the force transfer plate 22; the second flexure assembly 25 is secured to the side of the drive plate 23 remote from the flange 21;

the wheel assembly 3 may comprise a first wheel 30, a second wheel 31 and an axle 32, wherein: the axle 32 has one end connected to the first wheel 30 and the other end passing through the hollow shaft 20 and connected to the second wheel 31; the second wheel 31 is fixedly attached to the second flexure plate assembly 25.

That is, the flange 21, the first flexible plate assembly 24 and the force transmission plate 22 on the coupling 2 are fixedly connected, and the transmission plate 23, the second flexible plate assembly 25 and the second wheel 31 are fixedly connected, so that the torque of the permanent magnet traction motor 1 can be transmitted to the hollow shaft 20 through the force transmission plate 22 and then to the second wheel 31 through the transmission plate 23, and the second wheel 31 can transmit the torque to the first wheel 30 through the wheel shaft 32, thereby realizing the rotation of the first wheel 30 and the second wheel 31.

Compared with a bogie driving system in the related art, the bogie driving system has the advantages that components such as a traction gear and a sealing structure are omitted, the structure is simple, the maintenance is convenient, the power loss during gear meshing can be avoided, and the transmission efficiency is improved. Meanwhile, the bogie driving system does not need lubricating oil lubrication, so that the environment pollution caused by the lubricating oil is avoided.

In addition, the first and second

flexure plate assemblies

24 and 25 can damp the vibration to which the permanent magnet traction motor 1 and the wheel assembly 3 are subjected, thereby making the operation of the first and

second wheels

30 and 31 smoother.

The following describes each component of the bogie drive system according to the embodiment of the present disclosure in detail with reference to the accompanying drawings:

as shown in fig. 1, the permanent magnet traction motor 1 is used to power the bogie drive system of the present application, for example, the single shaft power of the permanent magnet traction motor 1 may be greater than or equal to 1200kW for a passenger-cargo electric locomotive with a shaft weight of 20-25 tons.

Permanent magnet traction motor 1 can include shell, stator, rotor, left end cover and right-hand member lid etc. wherein: the stator inlays in the shell, the rotor rotates to be connected in the stator, the left and right both ends of shell are located respectively to left end lid and right-hand member lid, and the rotor, the intermediate position of left end lid and right-hand member lid can have the centre bore 10 that link up, this centre bore 10 can be connected with drive assembly, of course, drive assembly still is connected with driven subassembly, so, permanent magnet traction motor 1 circular telegram back, pivoted rotor (driving subassembly) can be through drive assembly with torque transfer for driven subassembly, thereby realize driven subassembly's motion.

The permanent magnet traction motor 1 may include a plurality of hangers 11, specifically, the plurality of hangers 11 may be fixed on the housing of the permanent magnet traction motor 1, and the hangers 11 may be suspended on the frame of the electric locomotive bogie to realize the fixation of the permanent magnet traction motor 1. For example, the number of the hangers 11 may be three, and the three hangers 11 may be distributed in a triangular shape, so as to improve the connection stability between the hangers 11 and the frame of the bogie.

As shown in fig. 1, the coupling 2 is used to connect the permanent magnet traction motor 1 with the wheel assembly 3 and transmit the torque of the permanent magnet traction motor 1 to the wheel assembly 3, that is, the coupling 2 corresponds to the transmission assembly, and the wheel assembly 3 corresponds to the driven assembly.

As shown in fig. 2 and 3, the coupling 2 may comprise a hollow shaft 20, a flange 21, a force transmission disc 22, a transmission disc 23, a first flex-tab assembly 24 and a second flex-tab assembly 25, wherein:

the hollow shaft 20 may have one end connected to the flange 21 and the other end passing through the central hole 10 and connected to the transmission plate 23, specifically, the hollow shaft 20 and the flange 21 may be fixedly connected, in which case, the hollow shaft 20 and the flange 21 may be integrally formed, and of course, the hollow shaft 20 and the flange 21 may also be detachably connected, which is not limited herein. It should be noted that when the hollow shaft 20 is integrally formed with the flange 21, the hollow shaft 20 and the driving plate 23 must be detachably connected so that the hollow shaft 20 can be disposed through the central hole 10.

The force transmission disc 22 can be arranged on one side of the flange plate 21 close to the transmission disc 23 and can be fixedly connected with the permanent magnet traction motor 1, namely, one side of the force transmission disc 22 can be fixedly connected with the flange plate 21, and the other side can be fixedly connected with the permanent magnet traction motor 1, so that the connection between the permanent magnet traction motor 1 and the coupling 2 is realized.

For example, the force transmission disc 22 and the flange plate 21 may be directly and fixedly connected by a connecting member such as a bolt, and of course, a first flexible plate assembly 24 may be further disposed between the force transmission disc 22 and the flange plate 21, and the first flexible plate assembly 24 connects the force transmission disc 22 and the flange plate 21, and specifically, the force transmission disc 22, the first flexible plate assembly 24, and the flange plate 21 may be fixedly connected by a connecting member such as a bolt, so that the first flexible plate assembly 24 can buffer the vibration received by the permanent magnet traction motor 1. The first flexible sheet assembly 24 may be formed by stacking a plurality of metal sheets with good elasticity, and the first flexible sheet assembly 24 may be a regular circular ring, or may be an irregular circular ring (a girdling shape), which is not limited herein.

The connection mode of the force transmission disc 22 and the permanent magnet traction motor 1 can be a threaded connection or a clamping connection, and is not limited in particular. For example, the force transmission disc 22 may have a clamping groove 220 on a side away from the flange 21, the permanent magnet traction motor 1 has a clamping protrusion 12 on a side close to the flange 21, and the clamping groove 220 and the clamping protrusion 12 are engaged with each other, so that the connection between the permanent magnet traction motor 1 and the force transmission disc 22 can be realized.

Specifically, as shown in fig. 3, the engaging groove 220 and the engaging protrusion 12 may be gear teeth-shaped grooves that are engaged with each other around a complete circle, on one hand, the engaging groove 220 and the engaging protrusion 12 can be engaged firmly, and on the other hand, the force transmission disc 22 can uniformly bear the torque of the permanent magnet traction motor 1, so that the hollow shaft 20 can rotate smoothly, thereby improving the stability of the bogie driving system of the present application during the movement process.

As shown in fig. 1, the wheel assembly 3 may include a first wheel 30, a second wheel 31, and an axle 32, wherein:

the first wheel 30 and the second wheel 31 are arranged oppositely; the axle 32 has one end connected to the first wheel 30 and the other end passing through the hollow shaft 20 and connected to the second wheel 31; the rotational connection between the axle 32 and the first wheel 30 and the second wheel 31 can be achieved by means of bearing assemblies, which are not described in detail here; the axle 32 and hollow shaft 20 may be connected in an interference fit to avoid relative movement and wear between the axle 32 and hollow shaft 20.

The transmission disc 23 can be detachably connected with the hollow shaft 20 by a connecting member such as a bolt, and of course, can also be detachably connected by providing a protrusion or a groove which is mutually matched, and is not limited herein. Of course, the transmission disc 23 may also be fixedly connected to the second wheel 31, so as to transmit the torque of the permanent magnet traction motor 1 to the wheel assembly 3 through the transmission disc 23.

In addition, a second flexure plate assembly 25 may be disposed between the drive plate 23 and the second wheel 31, such that the second flexure plate assembly 25 can dampen vibrations experienced by the permanent magnet traction motor 1 and the wheel assembly 3, thereby improving the smoothness of operation of the wheel assembly 3. The second flexible sheet assembly 25 may be made of the same material and have the same shape as the first flexible sheet assembly 24, and will not be described herein.

It should be noted that one end of the coupling 2 (the end provided with the flange 21, the first flexible sheet assembly 24 and the force transmission disc 22) is connected only to the permanent magnet traction motor 1 and not to the first wheel 30; the other end of the coupling 2 (the end where the transmission disc 23 and the second flexure assembly 25 are located) is connected only to the second wheel 31 and not to the pm traction motor 1, so the torque of the pm traction motor 1 is transmitted in the order: permanent magnet traction motor 1 → force transfer disc 22 → first flexible sheet member 24 → flange 21 → hollow shaft 20 → transfer disc 23 → second flexible sheet member 25 → second wheel 31 → axle 32 → first wheel 30.

In order to improve the reliability of the torque transmission from the second flexure assembly 25 to the second wheel 31, as shown in fig. 2, the second flexure assembly 25 and the second wheel 31 may be fixedly connected by a plurality of transmission pins 4, and the plurality of transmission pins 4 are uniformly arranged on the second flexure assembly 25 to avoid the second flexure assembly 25 from being damaged due to uneven stress.

In addition, as shown in fig. 2, the edge of the transmission disc 23 may have a plurality of protrusions 230 and notches 231 arranged at intervals, wherein: the second flexible sheet assembly 25 and the protruding portion 230 are fixedly connected through connecting pieces such as bolts, the transmission pin 4 fixed on the second flexible sheet assembly 25 can be located at the notch portion 231, and compared with the arrangement mode that the transmission pin 4 is fixed on the protruding portion 230, the transmission pin 4 is located at the notch portion 231, so that the second flexible sheet assembly 25 can fully buffer the vibration of the permanent magnet traction motor 1 and the wheel assembly 3, and the running stability of the wheel assembly 3 is further improved.

There is also provided in an embodiment of the present disclosure an electric locomotive bogie, as shown in fig. 4, which may include a frame 1, a bogie drive system 2 as described in any one of the above, and a traction device 3, wherein:

the framework 1 can be provided with a first notch 10 positioned at one end of the framework 1, a second notch 11 positioned at the other end of the framework 1 and a third notch 12 positioned between the first notch 10 and the second notch 11, and the first notch 10 and the second notch 11 are respectively provided with three suspension parts 100 which are distributed in a triangular shape; the number of the bogie driving systems 2 can be two, one set of bogie driving system 2 can be arranged in the first gap 10, the other set of bogie driving system 2 can be arranged in the second gap 11, and the hanger 20 of the bogie driving system 2 can be hung on the hanging part 100; the traction device 3 may be arranged in the third gap 12 for connecting the frame 1 with the electric locomotive.

According to the electric locomotive bogie and the electric locomotive in the embodiment of the disclosure, the bogie driving system 2 is adopted for the electric locomotive, and the bogie driving system 2 is simple in structure, high in transmission efficiency and capable of simultaneously considering both speed and load, so that the electric locomotive bogie is good in universality in a passenger electric locomotive and a freight electric locomotive.

The following detailed description of the components of the electric locomotive bogie provided by the embodiment of the disclosure is made with reference to the accompanying drawings:

as shown in fig. 4 and 5, the frame 1 may include side beams, cross beams, and end beams that are welded, and the side beams, the cross beams, and the end beams may form a first gap 10, a second gap 11, and a third gap 12, wherein: the first notch 10 and the second notch 11 can be located at two ends of the frame 1, and both can be used for placing the bogie driving system 2 for providing power for the bogie of the electric locomotive of the application; the third notch 12 may be located in the middle of the frame 1 and may be able to place a towing device 3, which towing device 3 is used to connect the frame 1 with the electric locomotive.

As shown in fig. 6 and 7, the hanger 20 of the bogie drive system 2 can be hung from the frame 1, and specifically, the hanger 20 can be hung from the hanging portions 100 of the first notch 10 and the second notch 11. As described above, since the number of the hangers 20 on the permanent magnet traction motor in the bogie drive system 2 is three and the hangers are distributed in a triangular shape, the number of the hanging portions 100 of the first notch 10 and the second notch 11 is three and the hangers are distributed in a triangular shape.

Since the first notch 10 and the second notch 11 are protruded with respect to the third notch 12, the suspension point a near the third notch 12 is relatively lower than the suspension points B and C far from the third notch 12, and the suspension member 20 engaged with the suspension point a may be a suspension arm 200, and the suspension member 20 engaged with the suspension points B and C may be a suspension arm 201, as shown in fig. 7, the suspension arm 201 has a height greater than that of the suspension arm 200.

Specifically, the boom 200 and the boom 201 may each have an opening in the ends thereof, in which an elastic mandrel 202 may be disposed. As shown in fig. 5, the suspension portion 100 may have support blocks 101 disposed oppositely, the ends of the boom 200 and the suspension rod 201 may be disposed between the two support blocks 101, and the elastic core 202 may be fixed on the two support blocks 101 by a connector such as a screw, so as to connect the boom 200 and the suspension rod 201 to the suspension portion 100.

The flexible mandrel 202 has a degree of stiffness and flexibility, commonly referred to as a "soft joint," to dampen relative motion between the bogie drive system 2 and the frame 1. For example, the elastic mandrel 202 may be a prism structure, so as to prevent the elastic mandrel 202 from rotating relative to the openings at the ends of the suspension arm 200 and the suspension rod 201, thereby enabling the suspension member 20 to be stably connected to the frame 1. Further, as shown in fig. 8, the elastic core 202 may be externally sleeved with a rubber ring 203 to better dampen the relative movement between the bogie drive system 2 and the frame 1.

As shown in fig. 9, the towing means 3 may include a rotating arm 30, a vertical pin 31, a towing pull 32, and a hoist rope 33, wherein:

the center portion of the swivel arm 30 may be provided with a mounting hole 300, and a vertical pin 31 may be mounted in the mounting hole 300, and the vertical pin 31 may be connected to the electric vehicle.

The end of the rotating arm 30 may have a mounting groove 301, the traction link 32 may be located in the mounting groove 301, and the traction link 32 may be similar in structure to the hanger 20, that is, the traction link 32 may have a first end 320 and a second end 321 that are oppositely disposed, wherein: the first end 320 can be disposed in the mounting groove 301 of the rotating arm 30, and the first end 320 can be disposed with the elastic core shaft 202, the elastic core shaft 202 and the mounting groove 301 are fixedly connected by a connecting member such as a bolt, so as to realize the connection between the traction pull rod 32 and the rotating arm 30; the second end 321 may also be provided with an elastic core shaft 202, and the traction rod 32 is fixed to the frame 1 by a connecting member such as a bolt.

It should be noted that, as shown in fig. 9, the number of the pulling rods 32 may be two, and the two pulling rods 32 may be symmetrically disposed at an inclination angle of 45 °, and the pulling rods 32 are in a low position pulling mode, and have high adhesion utilization rate, no abrasion, and simple and reliable structure.

One end of the lifting rope 33 can be connected with the traction pull rod 32, and the other end can be connected with the framework 1 or the electric locomotive, so that the traction pull rod 32 can be prevented from falling off when the framework 1 or the electric locomotive has an accident such as collision, and the specific structure of the lifting rope 33 is not described in detail herein.

As shown in fig. 4, the electric locomotive bogie of the disclosed embodiment may further include a primary suspension 4, a secondary suspension 5, a braking device 6, and a stone discharge sanding device 7, wherein:

the primary suspension 4 and the secondary suspension 5 are used for buffering the vibration of the electric locomotive bogie, the primary suspension 4 can be arranged at two sides of the third gap 12, and the secondary suspension 5 can be arranged between the frame 1 and the wheel shaft of the bogie driving system 2. In the electric locomotive bogies of different models, the structures of the primary suspension 4 and the secondary suspension 5 can be kept unchanged, and the rigidity damping parameters of the primary suspension 4 and the secondary suspension 5 can be adjusted.

A braking device 6 may be provided at the end of the frame 1 for braking the bogie of the electric locomotive. The braking device 6 may be a wheel disc type braking device and may have functions of automatic gap adjustment and spring energy storage braking, and the specific structure of the braking device 6 will not be described in detail herein.

A sanding device 7 may be provided at the end of the frame 1 for spraying sand onto the wheels of the bogie drive system 2 to increase the friction between the wheels and the track of the electric locomotive. As shown in fig. 10, the sanding device 7 may have a sanding pipe 70, and the sanding pipe 70 is disposed opposite to the wheel.

The electric locomotive comprises the electric locomotive bogie, and the electric locomotive bogie comprises a bogie which is arranged on the front end of the electric locomotive. For example, the electric locomotive may include a locomotive body, and the electric locomotive bogie may be fixed to the bottom of the locomotive body to tow the locomotive body to operate.

It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute sets of alternative aspects of the present disclosure. The embodiments described in this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.

Claims

1. A bogie drive system, comprising:

2. The bogie drive system of claim 1 wherein the number of hangers is three and the three hangers are triangularly positioned.

3. The bogie drive system of claim 1, wherein the force transmitting plate has a detent groove on a side thereof remote from the flange, and the permanent magnet traction motor has a detent protrusion on a side thereof adjacent to the flange, the detent groove and the detent protrusion engaging with each other.

4. The truck drive system of claim 1 wherein the second flex blade assembly and the second wheel are fixedly connected by a drive pin.

5. The truck drive system of claim 4 wherein the rim of the drive plate has a plurality of spaced apart projections and notches, the second flex blade assembly is fixedly attached to the projections, and the drive pin is located in the notches.

6. An electric locomotive bogie, comprising:

the bogie drive system of any one of claims 1 to 5, wherein the number of the bogie drive systems is two, one set of the bogie drive system is arranged in the first gap, and the other set of the bogie drive system is arranged in the second gap; wherein the hanger is hung on the hanging part;

7. The electric locomotive bogie according to claim 6, wherein the end of the hanger has an opening, and wherein an elastic mandrel is disposed in the opening, and wherein the elastic mandrel and the hanging part are fixedly connected by a screw.

8. The electric locomotive bogie according to claim 7, wherein the elastic mandrel is of a prismatic structure.

9. The electric locomotive bogie according to claim 7, wherein the elastic core shaft is externally sleeved with a rubber ring.

10. An electric locomotive comprising the electric locomotive bogie according to any one of claims 6 to 9.