CN113364198B

CN113364198B - Wagon axle power generation device

Info

Publication number: CN113364198B
Application number: CN202110905680.1A
Authority: CN
Inventors: 田怀文; 田昊; 苑震; 张李玥; 桂堂文
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-11-02
Anticipated expiration: 2041-08-09
Also published as: CN113364198A

Abstract

The invention discloses a wagon axle power generation device, and belongs to the technical field of power generation devices. The problem of rail wagon axletree power generation facility among the prior art be difficult to guarantee the clearance between motor rotor and the stator invariable is solved. The self-lubricating device comprises a motor and a plurality of elastic connecting pieces, wherein the motor comprises a motor stator and a motor rotor, the motor rotor is sleeved on a truck axle and is fixedly connected with the truck axle, the motor stator is sleeved on the outer side of the motor rotor, one end of each elastic connecting piece is hinged with the motor stator, the other end of each elastic connecting piece is hinged with a truck carriage, a plurality of self-lubricating rolling bodies are uniformly arranged between the motor stator and the motor rotor, the self-lubricating rolling bodies are fixedly connected with the motor stator, and the rolling surfaces of the self-lubricating rolling bodies are in contact with the motor rotor. The invention can ensure the constant clearance between the motor stator and the rotor, ensure the stable power generation in the running process of the truck and meet the power consumption requirements of the electronic anti-skid device and the electro-pneumatic brake system.

Description

Wagon axle power generation device

Technical Field

The invention belongs to the technical field of motors, and particularly relates to a wagon axle power generation device.

Background

With the continuous development of the railway freight requirements, the railway freight cars in China face the problem of insufficient transport capacity, and the development towards rapid heavy loading is urgently needed. The rapid and heavy-load freight train needs to be respectively provided with an electronic anti-skid device and an electric pneumatic brake system to complete effective braking, and the use of the electronic anti-skid device and the electric pneumatic brake system requires that a truck is provided with a reliable power supply.

At present, power generation devices for railway wagons can be divided into two types, one is a device for generating power by using external energy such as wind power and the like, and the other is a device for generating power by cutting magnetic induction lines by using wagon axle rotation. For the power generation device for cutting the magnetic induction lines by utilizing the rotation of the axle of a wagon, the clearance between a stator and a rotor is very small, mostly between 1 and 2mm, and the largest difficulty is to ensure that the clearance between the rotor and the stator of a motor is constant because the wagon shakes and jolts in the motion process. Once the gap between the stator and the rotor is changed, the stator and the rotor collide with each other, and the power generation device cannot work normally. And most of the existing generating sets arranged at the middle section of the axle have complex structures, occupy large space and cannot be well adapted to the vibration and jolt of the freight car in the moving process, and the generating sets cannot be adaptively adjusted in the running process of the freight car.

Therefore, in order to solve the problems, the railway wagon axle power generation device is provided.

Disclosure of Invention

Aiming at the problem that the gap between a motor rotor and a stator is difficult to ensure to be constant in the railway wagon axle power generation device in the prior art, the invention provides a railway wagon axle power generation device, which aims to: the gap between the motor rotor and the stator is ensured to be constant and the vibration and the jolt of the truck in the moving process are adapted.

The technical scheme adopted by the invention is as follows:

the utility model provides a railway freight car axletree power generation facility, includes motor and several elastic connection spare, the motor includes motor stator, electric motor rotor, the electric motor rotor cover locate on the freight car axletree and with freight car axletree fixed connection, the electric motor rotor outside is located to the motor stator cover, several elastic connection spare one end is articulated with motor stator, and the other end is articulated with the boxcar, evenly be provided with several self-lubricating rolling element between motor stator and the electric motor rotor, self-lubricating rolling element and motor stator fixed connection, and the rolling surface and the electric motor rotor contact of self-lubricating rolling element.

After the technical scheme is adopted, the four elastic connecting pieces arranged in the V shape can ensure self-adaptive adjustment of the orientation of the motor when the truck runs and jolts, the self-lubricating rolling bodies can support the motor stator, collision between the stator and the rotor is prevented, the gap between the motor stator and the rotor is ensured to be unchanged, and the normal work of the power generation device is ensured.

Preferably, the self-lubricating rolling body is a self-lubricating bearing, an inner ring of the self-lubricating bearing is fixedly connected with the motor stator, and an outer ring of the self-lubricating bearing is in contact with the outer surface of the motor rotor.

After adopting this preferred scheme, self-lubricating bearing can not maintain or few maintenance when using, and wear resistance is good, and coefficient of friction is little, long service life to reduce the trouble, improve power generation facility's life.

Preferably, a motor protective shell is arranged on two sides of the motor stator.

After adopting this preferred scheme, the motor protective housing can prevent to get into dust debris in the motor, reduces the trouble, further prolongs power generation facility's life.

Preferably, motor stator comprises first stator body and second stator body, first stator body and second stator body bolted connection, electric motor rotor comprises first rotor body and second rotor body, first rotor body and second rotor body pass through bolted connection, electric motor protective housing comprises first protective housing and second protective housing.

After the preferred scheme is adopted, the rotor, the stator and the protective shell of the power generation device are designed in a two-petal type, so that the power generation device is convenient to install and detach.

Preferably, the number of the elastic connecting pieces is four, and the elastic connecting pieces are symmetrically hinged with the outer part of the motor stator and are arranged in a V shape.

After the preferred scheme is adopted, the elastic connecting piece is arranged in a V shape, and the relative fixation of the motor direction is kept through the self-balancing adjusting capacity of the elastic connecting piece.

Preferably, elastic connection spare includes spring, first protection section of thick bamboo, second protection section of thick bamboo, first pin and second pin, and the elastic connection spare both ends are provided with spring coupling seat respectively, the second protection section of thick bamboo is located the inboard of first protection section of thick bamboo and both sliding connection, and the spring is located the inside of first protection section of thick bamboo and second protection section of thick bamboo, the both ends of spring respectively with first pin, second pin fixed connection, first pin, second pin respectively with the spring coupling seat fixed connection who is located both ends.

After the adoption of the optimal scheme, when a railway wagon bumps, the first protection barrel and the second protection barrel slide relatively, and the spring stretches, so that the self-adaptive adjustment of the position of the motor is realized, and the protection barrels can prevent rainwater, muddy water, dust and the like encountered by the wagon in the working process from entering the elastic connecting piece, so that the motor is prevented from being damaged due to failure, the failure rate is reduced, and the service life is prolonged.

Preferably, a protruding sliding block structure is arranged on the second protection cylinder, a sliding groove is formed in the first protection cylinder, the sliding block structure is matched with the sliding groove in size, and the sliding block structure is located in the sliding groove.

After adopting this preferred scheme, slider structure and spout cooperate each other, can prevent that first protection section of thick bamboo and second protection section of thick bamboo from taking place relative rotation, reduce the trouble.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. motor rotor cover is located on the freight train axletree and with freight train axletree fixed connection, and motor stator supports on motor rotor through the self-lubricating rolling element, prevents to bump between stator and the rotor, guarantees that the clearance is unchangeable between motor stator and the rotor, guarantees that power generation facility normally works.

2. The elastic connecting piece can ensure that the position of the motor can be adjusted in a self-adaptive manner when the truck encounters bumping and shaking in the running process, and the relative position of the stator of the motor is ensured.

3. The self-lubricating bearing can be maintained in no or less maintenance when in use, has good wear resistance, small friction coefficient and long service life, thereby reducing faults and prolonging the service life of the power generation device.

4. The motor protective housing can prevent dust and sundries from entering the motor, reduce faults and further prolong the service life of the power generation device.

5. The rotor, the stator and the protective shell of the power generation device are designed in a two-piece mode and are connected through bolts, and the power generation device is convenient to install and detach.

6. The elastic connecting piece adopts a V-shaped arrangement, and the relative fixation of the motor orientation is kept through the self-balancing adjusting capability of the elastic connecting piece.

7. When a railway wagon jolts, the first protection barrel and the second protection barrel slide relatively, and the spring stretches, so that the self-adaptive adjustment of the position of the motor is realized, and the protection barrels can prevent rainwater, muddy water, dust and the like encountered by the wagon in the working process from entering the elastic connecting piece, prevent blockage, reduce the failure rate and prolong the service life.

8. The sliding block structure and the sliding groove are matched with each other, so that the first protection barrel and the second protection barrel can be prevented from rotating relatively, and faults are reduced.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the motor;

FIG. 3 is a schematic view of the structure of the elastic connection member;

fig. 4 is a sectional view of the structure of the elastic connection member.

The self-lubricating device comprises a 1-wagon compartment, a 2-wagon axle, a 3-motor, a 4-elastic connecting piece, a 31-motor stator, a 311-first stator body, a 312-second stator body, a 32-motor rotor, a 321-first rotor body, a 322-second rotor body, a 33-self-lubricating rolling body, a 34-motor protective shell, a 341-first protective shell, a 342-second protective shell, a 41-spring, a 42-first protective barrel, a 43-second protective barrel, a 44-spring connecting seat, a 45-first pin and a 46-second pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The present invention is described in detail below with reference to fig. 1-4.

The utility model provides a railway freight car axletree power generation facility, includes motor 3 and elastic connection spare 4, and motor 3 is fixed in on the

freight car axletree

2, and 4 one end of elastic connection spare articulate on motor 3, and the other end articulates on boxcar 1, motor 3 includes motor stator 31, motor rotor 32, self-lubricating rolling element 33 and motor protective housing 34, and motor rotor 32 axial fixity is on freight car axletree 2, and motor stator 31 supports on motor rotor 32, and motor stator 31 internally mounted has self-lubricating rolling element 33, and motor protective housing 34 is installed in motor stator 31 both ends, motor stator 31 both ends respectively evenly distributed have a plurality of self-lubricating rolling element 33, the rolling surface of self-lubricating rolling element 33 only contacts with motor rotor 32.

In this embodiment, the self-lubricating rolling element 33 is a self-lubricating bearing, an inner ring of the self-lubricating bearing is fixedly connected with the motor stator 31, and an outer ring of the self-lubricating bearing is in rolling contact with an outer surface of the motor rotor 32.

In this embodiment, the motor stator 31 is composed of a first stator body 311 and a second stator body 312, the first stator body 311 is connected to the second stator body 312 by bolts, the motor rotor 32 is composed of a first rotor body 321 and a second rotor body 322, the first rotor body 321 is connected to the second rotor body 322 by bolts, and the motor protection shell 34 is composed of a first protection shell 341 and a second protection shell 342.

In this embodiment, the quantity of elastic connection spare 4 is four, motor stator 31's outside symmetry is provided with 4 articulated tie points, and four elastic connection spare 4 are connected with motor stator 31 outside articulated tie point respectively, and are the V type setting, and keep away from motor stator 31 more promptly, the distance between elastic connection spare 4 is more far away.

In this embodiment, the elastic connection member 4 includes a spring 41, a first protection cylinder 42, a second protection cylinder 43, a first pin 45 and a second pin 46, two ends of the elastic connection member 4 are respectively provided with a spring connection seat 44, the second protection cylinder 43 is located inside the first protection cylinder 42 and is slidably connected with the first protection cylinder 42, the spring 41 is located inside the first protection cylinder 42 and the second protection cylinder 43, two ends of the spring 41 are respectively fixedly connected with the first pin 45 and the second pin 46, and the first pin 45 and the second pin 46 are respectively fixedly connected with the spring connection seats 44 located at two ends.

In this embodiment, the second protection cylinder 43 is provided with a convex sliding block structure, the first protection cylinder 42 is provided with a sliding slot, the sliding block structure is matched with the sliding slot in size, and the sliding block structure is located in the sliding slot.

The working principle of the invention is as follows: when the axle of the truck starts to rotate, the rotor of the motor rotates along with the axle of the truck, and the magnetic induction lines are cut in the motor to generate electricity. The outer surface of the motor stator is fixed on a boxcar through an elastic connecting piece, the inner surface of the motor stator is supported on the motor rotor through a self-lubricating rolling body, and the stator is supported on the rotor without interference due to the existence of the self-lubricating rolling body in the rotating process of the rotor, so that the constant distance between the rotor and the stator is ensured.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. The utility model provides a railway freight car axletree power generation facility which characterized in that: the self-lubricating device comprises a motor (3) and a plurality of elastic connecting pieces (4), wherein the motor (3) comprises a motor stator (31) and a motor rotor (32), the motor rotor (32) is sleeved on a wagon axle (2) and fixedly connected with the wagon axle (2), the motor stator (31) is sleeved on the outer side of the motor rotor (32), one end of each elastic connecting piece (4) is hinged with the motor stator (31), the other end of each elastic connecting piece is hinged with a wagon compartment (1), a plurality of self-lubricating rolling bodies (33) are uniformly arranged between the motor stator (31) and the motor rotor (32), the self-lubricating rolling bodies (33) are fixedly connected with the motor stator (31), and the rolling surfaces of the self-lubricating rolling bodies (33) are in contact with the motor rotor (32); elastic connecting piece (4) include spring (41), first protection section of thick bamboo (42), second protection section of thick bamboo (43), first pin (45) and second pin (46), and elastic connecting piece (4) both ends are provided with spring coupling seat (44) respectively, second protection section of thick bamboo (43) are located the inboard and both sliding connection of first protection section of thick bamboo (42), and spring (41) are located the inside of first protection section of thick bamboo (42) and second protection section of thick bamboo (43), the both ends of spring (41) respectively with first pin (45), second pin (46) fixed connection, first pin (45), second pin (46) respectively with spring coupling seat (44) fixed connection who is located both ends.

2. The axle power generation device for a railway wagon as claimed in claim 1, wherein: the self-lubricating rolling body (33) is a self-lubricating bearing, an inner ring of the self-lubricating bearing is fixedly connected with the motor stator (31), and an outer ring of the self-lubricating bearing is in contact with the outer surface of the motor rotor (32).

3. The axle power generation device for a railway wagon as claimed in claim 1, wherein: and motor protective cases (34) are arranged on two sides of the motor (3).

4. A railway wagon axle power generation device as claimed in claim 3, wherein: the motor stator (31) is composed of a first stator body (311) and a second stator body (312), the first stator body (311) is connected with the second stator body (312) through bolts, the motor rotor (32) is composed of a first rotor body (321) and a second rotor body (322), the first rotor body (321) is connected with the second rotor body (322) through bolts, and the motor protective shell (34) is composed of a first protective shell (341) and a second protective shell (342).

5. The axle power generation device for a railway wagon as claimed in claim 1, wherein: the number of the elastic connecting pieces (4) is four, and the elastic connecting pieces are symmetrically hinged with the outer part of the motor stator (31) and are arranged in a V shape.

6. The axle power generation device for a railway wagon as claimed in claim 1, wherein: the second protection cylinder (43) is provided with a raised sliding block structure, the first protection cylinder (42) is provided with a sliding groove, the sliding block structure is matched with the sliding groove in size, and the sliding block structure is located in the sliding groove.