WO2022068313A1

WO2022068313A1 - Axle-end electricity generating apparatus and bogie of railway car

Info

Publication number: WO2022068313A1
Application number: PCT/CN2021/105701
Authority: WO
Inventors: 李智泽; 段仕会; 王春林; 李玉婵; 穆凤军; 张弓; 周国东; 徐世锋; 邵文东
Original assignee: 中车齐齐哈尔车辆有限公司
Priority date: 2020-09-29
Filing date: 2021-07-12
Publication date: 2022-04-07
Also published as: CN112046524A; AU2021351756A1

Abstract

An axle-end electricity generating apparatus and a bogie of a railway car. The apparatus comprises a supporting saddle, a mounting frame, and an electric generator. The electric generator comprises a stator, a rotor, and a housing. The stator is mounted in the housing. The rotor is mounted at an axle end of a vehicle axle. The supporting saddle is provided at the bottom surface thereof with an arced mounting surface fitting a bearing. The mounting frame is provided on the upper end surface with a notch to accommodate a part of the bearing. The supporting saddle and the mounting frame are joined to form an annular outer end surface. The annular outer end surface is provided with a mounting structure used for being fittingly fixed to the housing. When such structure is employed, the supporting saddle and the mounting frame are joined to form an annular structure, which can be fixed on the bearing, at the same time, the annular outer end surface used for mounting the housing is formed on the side, a complete mounting structure for mounting the electric generator is provided, and, when mounting, only the mounting frame needs to be mounted below the supporting saddle to complete the process, thus increasing the convenience of mounting.

Description

A shaft end power generation device and bogie of a railway vehicle

This application requires:

Priority of the Chinese patent application filed on September 29, 2020 with the application number 202011049872.9 and the invention titled "A shaft end power generation device and bogie for railway vehicles", the entire contents of which are incorporated herein by reference middle.

technical field

The invention relates to the technical field of railway freight cars, in particular to a shaft end power generating device and a bogie of a railway vehicle.

Background technique

With the development of domestic railway transportation, there are more and more equipments in vehicles that require electricity, but domestic railway freight cars currently do not have external power supply, so the use of vehicle kinetic energy to generate electricity by itself has become an effective solution.

At present, the bogies of domestic railway freight cars are mainly composed of three parts, that is, they are assembled from two side frames and one bolster. The side frames and the wheelset with bearings are connected by a bearing saddle. The lower part of the bearing saddle is open, so that the stator of the generator can only be installed on the upper part of the bearing saddle, the lower part of the stator cannot be fixed, and the generator rotor cannot be completely closed. The connection gap may cause the load saddle to jump from the bearing, causing the stator and rotor of the generator to move relative to each other, and there is a possibility that the stator and the rotor collide with each other and cause structural damage.

Therefore, how to provide a shaft end power generation device with a complete installation structure and convenient installation is still a technical problem to be solved urgently by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a shaft end power generating device with a complete installation structure and convenient installation.

In order to solve the above-mentioned technical problems, the present invention provides a shaft end power generation device of a railway vehicle, which includes a bearing saddle, a mounting frame, and a generator. The generator includes a stator, a rotor and a casing, and the stator is installed on the casing. , the rotor is installed on the shaft end of the axle, the bottom surface of the bearing saddle is formed with an installation arc surface that cooperates with the bearing, the upper end surface of the mounting frame is formed with a notch to accommodate part of the bearing, the bearing saddle and The mounting frame is enclosed and assembled to form an annular outer end surface, and the annular outer end surface is provided with a mounting structure for cooperating and fixing with the casing.

After adopting this structure, the bearing saddle and the mounting frame are enclosed into an annular structure, which can be fixed to the bearing. At the same time, an annular outer end surface for installing the casing is formed on the side, so that it has a complete installation structure capable of installing the generator. It is more convenient to install the mounting frame under the bearing saddle. The power generation principle of this shaft end power generation device is that the stator is installed on the casing, the rotor is installed on the shaft end of the axle, and the casing is fixed with the bearing saddle. The rotor is fixed with the axle. When the vehicle is running, the axle rotates, but the saddle does not rotate along with it, so that the stator and the rotor rotate relative to each other, and then generate electricity.

Optionally, the mounting bracket includes a first mounting bracket that can be fixedly connected to the front end of the bearing saddle, and the first mounting bracket and the bearing saddle form the annular outer end surface.

Optionally, the recess of the first mounting frame is provided with a protruding annular clamping part, and the clamping part is used for clamping with a corresponding groove on the casing.

Optionally, the mounting bracket further includes a second mounting bracket, and the second mounting bracket can be fixed to the rear end of the bearing saddle.

Optionally, the mounting frame is an integral structure.

Optionally, the casing is fixed to the annular outer end surface by bolts, the bearing saddle includes a front end portion and a rear end portion, and partial outer edges of the front end portion and the rear end portion extend outward to form a first installation. and the second mounting seat, the first mounting seat and the corresponding second mounting seat are provided with coaxial through holes to install the bolts; the outer edge of the front end face of the mounting frame is partially outward A third mounting seat is formed by extension, and the third mounting seat is provided with a bolt or screw mounting hole.

Optionally, the bearing saddle and the mounting bracket are respectively provided with radially extending first bosses and second bosses on the outer sides of the opposite parts, and the corresponding first bosses and second bosses There are coaxial holes for screws to pass through, so as to provide screws or bolts to fixedly connect the bearing saddle and the mounting frame.

Optionally, the casing is in sealing connection with the annular outer end surface.

Optionally, the rotor includes a magnetic component, an annular barrel and a fixing plate fixed inside the annular barrel, the fixing plate axially isolates the inner cavity of the annular barrel to form a first barrel section and a second barrel The first cylinder section is an installation cavity, the open end of the installation cavity is sealed against the inner ring of the bearing, and the magnetic component is installed on the second cylinder section; The shaft end bolt hole is a coaxial through hole, and the threaded portion of the bolt passes through the through hole on the fixing plate and is threadedly connected to the inside of the shaft end bolt hole.

The present invention also provides a bogie of a railway vehicle, which includes a frame and a bolster, and is installed with the shaft end power generating device described in any one of the above.

The bogie of the railway vehicle in the present invention includes the above-mentioned shaft-end generator device, so the bogie also has the above-mentioned technical effect of the shaft-end generator device.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the shaft end power generation device;

Fig. 2 is the structural representation of load-bearing saddle and mounting frame;

FIG. 3 is a schematic view of the structure of the rotor.

The reference numbers in Figures 1-3 are explained as follows:

1 bearing saddle, 11 installation arc surface, 12 first boss, 13 first installation seat, 14 second installation seat;

2 mounting brackets, 21 first mounting brackets, 22 second mounting brackets, 23 notches, 231 snap-on parts, 24 third mounting seats, 25 second bosses;

3 chassis;

4 generator, 41 stator, 42 rotor, 421 annular cylinder, 422 fixed plate, 423 through hole;

5 Bearings.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIG. 1-FIG. 2. FIG. 1 is a schematic diagram of the overall structure of the shaft end power generation device; FIG. 2 is a schematic diagram of the structure of the load-bearing saddle and the mounting frame.

The present invention provides a shaft end power generation device for a railway vehicle, comprising a bearing saddle 1, a mounting frame 2, a casing 3 and a generator 4, the generator 4 includes a stator 41 and a rotor 42, the stator 41 is mounted on the casing 3, and the rotor 42 Installed on the axle end of the axle, the bottom surface of the bearing saddle 1 is formed with an installation arc surface 11 that cooperates with the bearing 5, the upper end surface of the mounting frame 2 is formed with a notch 23 to accommodate part of the bearing 5, the bearing saddle 1 and the mounting frame 2 are enclosed The assembly forms an annular outer end surface, and the annular outer end surface is provided with a mounting structure for cooperating and fixing with the casing 3 .

After adopting this structure, as shown in FIG. 1 , the bearing saddle 1 and the mounting frame 2 are enclosed in a ring-shaped structure, which can be fixed to the bearing 5 . The end face makes it have a complete installation structure capable of installing the generator 4, and only needs to install the mounting frame 2 under the bearing saddle 1 during installation, and the installation is more convenient; wherein, the power generation principle of the generator 4 is that the stator 41 Installed on the casing, the rotor 42 is installed on the shaft end of the axle, the casing 3 is fixed with the bearing saddle 1, and the rotor 42 is fixed with the axle. 41 rotates relative to the rotor 42 to generate electricity.

Further, the mounting frame 2 includes a first mounting frame 21, which can be fixedly connected to the front end of the bearing saddle 1, is enclosed with the bearing saddle 1, and forms an annular outer end face on the side surface. The recess 23 of the frame 21 is provided with a protruding annular clamping part 231 , and the clamping part 231 is used for clamping with the corresponding groove on the stator 41 .

The first mounting frame 21 can limit the bearing saddle 1, and its notch 23 can fit the lower part of the bearing 5, so that the first mounting frame 21 and the bearing saddle 1 can be kept relatively fixed with the bearing 5 after being enclosed, so as to prevent the vehicle from driving. During the process, the load saddle 1 jumps up from the bearing 5 due to the gap of the rails, etc., resulting in damage to the generator 4 .

The first mounting frame 21 can also limit the position of the stator 41 of the generator 4. The stator 41 is provided with a groove, and the groove can be engaged with the engaging portion 231 provided on the first mounting frame 21. The casing 3 is fixedly connected, and the first mounting frame 21 can also prevent the movement of the bearing saddle 1 in the axial direction of the bearing 5 , further ensuring the safety of the generator 4 .

As shown in FIG. 2 , there is a certain distance between the outer side of the engaging portion 231 (in the direction of the outer side of the wheel) and the outer side of the overall structure of the first mounting frame 21 . The distance is to prevent the rotor 42 of the generator 4 from being connected to the first mounting frame. The possible collision of 21 may cause damage to the rotor 42. Similarly, the outer side of the bearing saddle 1 is also kept at a safe distance.

The mounting frame 2 also includes a second mounting frame 22. The second mounting frame 22 can be fixed to the rear end of the bearing saddle 1, and its function is to further limit the bearing saddle 1, so as to prevent the load on the bearing saddle 1 by relying only on the first mounting frame 21. The saddle 1 limit is not firm.

It should be noted that, in the embodiment, the mounting frame 2 is a split structure, and its main structure includes a first mounting frame 21 and a second mounting frame 22, but in practical applications, the mounting frame 2 can also be an integrated structure, For example, the first mounting bracket 21 and the second mounting bracket 22 are integrated into a single mounting bracket with a thicker thickness. Of course, the split structure in the embodiment can save materials and reduce the power generation device at the shaft end. overall weight.

Further, in practical applications, the second mounting frame 22 may not be provided, and the bearing saddle 1 can be fixed only by the first mounting frame 21. Since the mounting surface of the casing 3 is on the first mounting frame 21 and the bearing saddle 1, Therefore, the function of the shaft end power generation device will not be affected, and the overall weight of the shaft end power generation device can be further reduced.

Please continue to refer to FIG. 1 , in the embodiment, the casing 3 is fixed to the annular outer end face by bolts, and the bearing saddle 1 includes a front end and a rear end, the front and rear refer to the axial direction of the axle, and the outer part of the vehicle is the front , the inside is the rear.

The partial outer edges of the front end and the rear end extend outward to form a first mounting seat 13 and a second mounting seat 14. The first mounting seat 13 and the corresponding second mounting seat 14 are provided with coaxial through holes for mounting bolts or screw. Correspondingly, the upper end of the casing 3 is also provided with a through hole coaxial with the first mounting seat 13 and the second mounting seat 14 for fixing the casing 3 to the bearing saddle 1 .

It should be pointed out that the function of the second mounting seat 14 is only to strengthen the stability of the connection between the bearing saddle 1 and the casing 3, and in practical applications, the second mounting seat 14 may not be provided, and only the first mounting seat 13 can be used to Install bolts or screws for fixed connection with the casing 3, so that the outer edge of the rear end of the bearing saddle 1 does not need to extend outward, which can save materials and further reduce the overall weight of the shaft end power generating device.

The partial outer edge of the front end face side of the mounting frame 2 similarly extends outward to form a third mounting seat 24, and the third mounting seat 24 is provided with mounting holes for bolts or screws. The three coaxial through holes of the mounting bases 24 are used for fixing the casing 3 to the mounting frame 2 .

The casing 3 is fixedly connected with the annular outer end face by screws and bolts. After the bolts are tightened, the casing 3 and the annular outer end face can be sealed, so that the internal environment where the generator 4 is located is isolated from the external environment of the vehicle, so that the It prevents the bad environment that may exist outside the vehicle from affecting the generator 4, and enhances the safety of the power generating device at the shaft end.

It should be noted that the bolt connection between the casing 3 and the annular outer end surface is only a connection method adopted in this embodiment, and this connection method is convenient for the installation and disassembly of the casing 3. In practical applications, the casing 3 and the annular outer end face can also be connected by other connection methods, as long as the casing 3 can be relatively fixed with the bearing saddle 1 and the mounting frame 2, and the internal generator 4 can operate normally during the driving process of the vehicle. .

Please refer to FIG. 2 , the bearing saddle 1 and the mounting frame 2 are respectively provided with radially extending first bosses 12 and second bosses 25 on the outer sides of the opposite parts, and the corresponding first bosses 12 and second bosses 25 is provided with coaxial holes for screws to pass through, so as to provide screws or bolts to connect the saddle 1 and the mounting frame 2 fixedly. During installation, the first boss 12 is aligned with the corresponding second boss 25, and the bearing saddle 1 and the mounting frame 2 are fixedly connected by screws and bolts.

Similarly, the bolt connection is only a connection method adopted in this embodiment, and the arrangement of the first boss 12 and the second boss 25 is required for the screw connection, and in practical applications, other connection methods can also be selected, as long as Ensure that the saddle 1 and the mounting frame 2 can be fixedly connected, and the whole can be sleeved on the axle. If the actual connection method does not require the first boss 12 and the second boss 25, the first boss 12 may not be provided. and the second boss 25.

In the embodiment, the rotor 42 includes a magnetic part (not shown in the figure), an annular barrel 421 and a fixing plate 422 fixed inside the annular barrel 421. The fixing plate 422 isolates the inner cavity of the annular barrel 421 in the axial direction to form a first The cylinder section and the second cylinder section, the first cylinder section is the installation cavity, the open end of the installation cavity is sealed against the inner ring of the bearing 5, the magnetic component is installed on the second cylinder section, and the fixing plate 422 is provided with a shaft end bolt The holes are coaxial through holes 423, and the threaded portions of the bolts pass through the through holes 423 on the fixing plate 422 and are threadedly connected to the inside of the shaft end bolt holes.

Although the drawings herein do not show the magnetic components, it does not hinder the understanding and implementation of the technical solutions herein by those skilled in the art.

With this structure, the rotor 42 can be fixed with the axle, and the connection between the rotor 42 and the axle is the same as that of the axle and the original axle end cover, which are all connected by bolts, and the through holes 423 can be connected with the axle end bolt holes provided on the axle. Matching, the axle does not need to be provided with a new connection structure for connecting the rotor 42, which facilitates the installation of the power generating device at the end of the axle.

The present invention also provides a bogie of a railway vehicle, which includes a frame and a bolster, and is provided with a shaft end power generation device. The shaft end power generation device is the shaft end power generation device described above. Since the shaft end power generation device has the above technical effect, the bogie should also have the same technical effect, so it is not repeated here.

In practical applications, if the power consumption of the railway vehicle is small, and one axle-end power generation device is sufficient to supply electricity, only one axle-end power generation device can be installed on the bogie; if the power consumption of the railway vehicle is large, more When only one shaft end power generation device can supply electricity, the bogie can also be installed with shaft end power generation devices on multiple shaft ends respectively for the needs.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the present application. within the scope of protection.

Claims

A shaft end power generation device for a railway vehicle, characterized in that it comprises a bearing saddle (1), a mounting frame (2) and a generator (4), the generator (4) comprising a stator (41), a rotor (42) and a casing (3), the stator (41) is mounted on the casing (3), the rotor (42) is mounted on the shaft end of the axle, and the bottom surface of the bearing saddle (1) is formed with a bearing ( 5) A matching mounting arc surface (11), a recess (23) is formed on the upper end surface of the mounting bracket (2) to accommodate part of the bearing (5), the bearing saddle (1) and the mounting bracket (2) Enclosing and assembling to form an annular outer end surface, and the annular outer end surface is provided with a mounting structure for cooperating and fixing with the casing (3).
The shaft end power generation device according to claim 1, characterized in that: the mounting bracket (2) comprises a first mounting bracket (21), and the first mounting bracket (21) can be fixedly connected to the bearing saddle (1). ), the first mounting bracket (21) and the bearing saddle (1) form the annular outer end surface.
The shaft-end power generation device according to claim 2, characterized in that: the recess (23) of the first mounting bracket (21) is provided with a protruding annular clamping portion (231), and the clamping The part (231) is used for snapping with the corresponding groove on the casing (3).
The shaft end power generation device according to claim 2, characterized in that: the mounting bracket (2) further comprises a second mounting bracket (22), and the second mounting bracket (22) can be fixed on the bearing saddle (1). ) of the rear end.
The shaft end power generating device according to claim 1, characterized in that: the mounting bracket (2) is an integral structure.
The shaft-end power generation device according to claim 1, characterized in that: the casing (3) is fixed to the annular outer end face by bolts, the bearing saddle (1) comprises a front end and a rear end, and the front end Part of the outer edge of the rear end part and the rear end part extends outward to form a first mounting seat (13) and a second mounting seat (14), the first mounting seat (13) and the corresponding second mounting seat ( 14) is provided with a coaxial through hole to install the bolt;

A partial outer edge of one side of the front end surface of the mounting bracket (2) extends outward to form a third mounting seat (24), and the third mounting seat (24) is provided with mounting holes for bolts or screws.
The shaft end power generating device according to any one of claims 1-6, characterized in that: the bearing saddle (1) and the mounting bracket (2) are respectively provided with radially extending first radially extending first The bosses (12) and the second bosses (25), the corresponding first bosses (12) and the second bosses (25) are provided with coaxial holes through which the screws can pass, so as to provide screws or The bearing saddle (1) and the mounting bracket (2) are fixedly connected by bolts.
The shaft-end power generation device according to any one of claims 1-6, characterized in that: the casing (3) is in sealing connection with the annular outer end surface.
The shaft end power generation device according to any one of claims 1-6, characterized in that: the rotor (42) comprises a magnetic component, an annular cylinder (421) and a fixing plate (421) fixed inside the annular cylinder (421). 422), the fixing plate (422) separates the inner cavity of the annular cylinder (421) in the axial direction to form a first cylinder section and a second cylinder section, the first cylinder section is an installation cavity, and the installation cavity The open end of the bearing is sealed against the inner ring of the bearing (5), and the magnetic component is mounted on the second barrel section;

The fixing plate (422) is provided with a through hole (423) coaxial with the shaft end bolt hole, and the threaded portion of the bolt passes through the through hole (423) on the fixing plate (422) and is threadedly connected to the fixing plate (422). inside the shaft end bolt hole.
A bogie of a railway vehicle, comprising a frame and a bolster, is characterized in that: a shaft end power generation device is installed, and the shaft end power generation device is the shaft end power generation device according to any one of claims 1-9.