阅读说明：本技术 一种用于轨道车辆轮对驱动的空心轴结构 (Hollow shaft structure for driving wheel pair of rail vehicle ) 是由 赵素荣 陈清建 钱纪富 贾强 林丽 尚勤 王毅 徐岸利 于 2021-07-02 设计创作，主要内容包括：本发明涉及轨道机车车辆走行技术领域；具体公开了一种用于轨道车辆轮对驱动的空心轴结构,套装在车轴外侧,包括空心轴一、与空心轴一的一端连接且同轴设置的空心轴二。本发明有效的实现了驱动齿轮箱的定位、齿轨齿轮的定位,并且通过与离合器的连接,实现了粘着线路和齿轨线路的牵引方式的转换。(The invention relates to the technical field of running of rail locomotive vehicles; the hollow shaft structure is sleeved on the outer side of an axle and comprises a first hollow shaft and a second hollow shaft which is connected with one end of the first hollow shaft and is coaxially arranged. The invention effectively realizes the positioning of the driving gear box and the positioning of the rack gear, and realizes the conversion of the traction modes of the adhesion line and the rack line through the connection with the clutch.)

1. The utility model provides a be used for rail vehicle wheel pair driven hollow shaft structure, the suit is in the axletree outside, its characterized in that: comprises a first hollow shaft and a second hollow shaft which is connected with one end of the first hollow shaft and is coaxially arranged.

2. A hollow axle construction for a rail vehicle wheelset drive according to claim 1, characterized in that: one end of the first hollow shaft close to the second hollow shaft is provided with a first end face tooth, and one side of the second hollow shaft close to the first hollow shaft is provided with a second end face tooth meshed with the first end face tooth.

3. A hollow axle construction for a rail vehicle wheelset drive according to claim 1, characterized in that: the second hollow shaft comprises a second hollow shaft A connected with the first hollow shaft and a second hollow shaft B connected with one end, far away from the first hollow shaft, of the second hollow shaft A, and an intermediate bearing mounting groove is formed in the inner side face of the second hollow shaft B.

4. A hollow axle construction for a rail vehicle wheelset drive according to claim 3, characterized in that: the inner diameter of the hollow shaft II A is consistent with that of the hollow shaft I; the inner diameter of the middle bearing mounting groove is larger than that of the hollow shaft II A.

5. A hollow axle construction for a rail vehicle wheelset drive according to claim 3, characterized in that: and one side of the second hollow shaft B, which is far away from the second hollow shaft A, is provided with an installation flange, and the installation flange is coaxial with the second hollow shaft B.

6. A hollow axle construction for a rail vehicle wheelset drive according to claim 5, characterized in that: the inner diameter of the mounting flange is consistent with that of the second hollow shaft B, and the outer diameter of the mounting flange is larger than that of the second hollow shaft B.

7. A hollow axle construction for a rail vehicle wheelset drive according to claim 5, characterized in that: the second hollow shaft A is connected with the first hollow shaft through a bolt.

8. A hollow axle construction for a rail vehicle wheelset drive according to any of claims 3-7, characterized in that: the first hollow shaft comprises a first hollow shaft A connected with the second hollow shaft A and a first hollow shaft B connected with one end of the first hollow shaft A, which is far away from the second hollow shaft; the inner diameter of the first hollow shaft A is consistent with that of the second hollow shaft A.

9. A hollow axle construction for a rail vehicle wheelset drive according to claim 8, wherein: the inner side surface of the first hollow shaft B is provided with a bearing mounting groove; the inner diameter of the bearing mounting groove is larger than that of the hollow shaft II A.

10. A hollow axle construction for a rail vehicle wheelset drive according to claim 8, wherein: a gear box mounting groove is formed in the outer side of the first hollow shaft A; and a circular boss is arranged on the outer side of the second hollow shaft A.

Technical Field

The invention relates to the technical field of running of rail locomotive vehicles, in particular to a hollow shaft structure for driving wheel pairs of rail vehicles.

Background

At present, foreign tooth track lines comprise pure tooth track lines and mixed lines of tooth tracks and common wheel tracks, a bogie applied to the pure tooth track lines is a tooth track bogie, a bogie applied to the mixed lines is a tooth track bogie and a common wheel track bogie, the foreign tooth track trains applied to the mixed lines can only meet 35 thousandth common wheel track lines and 120 thousandth tooth track lines, and the trains are in combined arrangement of the tooth track bogie and the common wheel track bogie.

With the development of rail transit, the new-type rack has attracted extensive attention in China with the characteristics of strong climbing capability, large traction braking force, large-gradient and large-traffic-capacity rail transportation adaptation, high riding comfort and the like, is very suitable for mountain rail transit, and lacks a structure matched with a rack bogie with the running requirement on a large gradient of 250 per thousand for use.

Disclosure of Invention

The invention aims to solve the technical problem of providing a hollow shaft structure for driving wheel sets of a railway vehicle; the positioning of the driving gear box and the positioning of the rack gear are effectively realized, and the conversion of the traction modes of the adhesion line and the rack line is realized through the connection with the clutch.

The technical problem to be solved by the invention is as follows:

a hollow shaft structure for driving a wheel pair of a railway vehicle is sleeved on the outer side of an axle and comprises a first hollow shaft and a second hollow shaft which is connected with one end of the first hollow shaft and is coaxially arranged.

Firstly, sleeving a hollow shaft I and an inner hollow shaft II on the outer side of an axle through two sets of bearing mounting heads; secondly, connecting the first hollow shaft with the second hollow shaft; then the driving gear box is arranged on the outer diameter of the first hollow shaft through a bearing, and the rack gear is in interference fit with the outer side of the second hollow shaft; and the outer ring of the clutch and the brake wheel are fixedly arranged at the end part of the second hollow shaft far away from the first hollow shaft through bolts. Through the connection of the structure, the positioning of the driving gear box and the positioning of the rack gear are realized, and the conversion of the traction modes of the adhesion line and the rack line is realized through the connection with the clutch.

In some possible embodiments, one end of the first hollow shaft close to the second hollow shaft is provided with a first end face tooth, and one side of the second hollow shaft close to the first hollow shaft is provided with a second end face tooth meshed with the first end face tooth.

In some possible embodiments, in order to effectively realize the connection between the second hollow shaft and the axle, the second hollow shaft comprises a second hollow shaft a connected with the first hollow shaft and a second hollow shaft B connected with one end of the second hollow shaft a far away from the first hollow shaft, and an intermediate bearing mounting groove is formed in the inner side surface of the second hollow shaft B.

When the second hollow shaft is installed, the middle bearing is sleeved on the outer side of the axle, and the middle bearing is installed in the middle bearing installation groove, so that the second hollow shaft is connected with the axle.

In some possible embodiments, the inner diameter of the second hollow shaft a is consistent with the inner diameter of the first hollow shaft; the inner diameter of the middle bearing mounting groove is larger than that of the hollow shaft II A.

In some possible embodiments, in order to effectively realize the connection of the brake wheel and the clutch with the second hollow shaft, a mounting flange is arranged on one side of the second hollow shaft B far away from the second hollow shaft A, and the mounting flange is coaxial with the second hollow shaft B.

In some possible embodiments, the inner diameter of the mounting flange is consistent with the inner diameter of the second hollow shaft B, and the outer diameter of the mounting flange is larger than the outer diameter of the second hollow shaft B.

In some possible embodiments, in order to effectively connect the hollow shaft two a with the hollow shaft one, the hollow shaft two a and the hollow shaft one are connected through bolts.

In some possible embodiments, the first hollow shaft comprises a first hollow shaft A connected with the second hollow shaft A, and a first hollow shaft B connected with one end of the first hollow shaft A, which is far away from the second hollow shaft; the inner diameter of the first hollow shaft A is consistent with that of the second hollow shaft A.

In some possible embodiments, the inner side surface of the first hollow shaft B is provided with a bearing installation groove; the inner diameter of the bearing mounting groove is larger than that of the hollow shaft II A.

And the bearing is sleeved on the outer side of the axle and is positioned in the bearing mounting groove, so that the connection between the first hollow shaft and the axle is realized.

In some possible embodiments, a gear box installation groove is arranged on the outer side of the first hollow shaft A; and a circular boss is arranged on the outer side of the second hollow shaft A.

And a conical bearing is arranged in the gear mounting groove, and the outer ring of the conical bearing is connected with the driving gear box, so that the transmission connection of the first hollow shaft and the driving gear box is realized.

Compared with the prior art, the invention has the beneficial effects that:

the positioning of the driving gear box and the positioning of the rack gear are effectively realized through the connection of the first hollow shaft and the second hollow shaft;

the hollow shaft II realizes the conversion of the traction modes of the adhesion line and the rack line through the connection with the clutch.

According to the invention, the first hollow shaft and the second hollow shaft are connected into a whole through the matching of the end face teeth close to the end faces of the first hollow shaft and the second hollow shaft; the structural stability and the torque transmission are effectively realized;

the invention has simple structure and strong practicability.

Drawings

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

FIG. 2 is a schematic structural view of a first hollow shaft according to the present invention;

FIG. 3 is a schematic structural view of a hollow shaft II according to the present invention;

FIG. 4 is a schematic view of the present invention in use;

wherein: 1. a first hollow shaft; 11. a hollow shaft A; 111. a gearbox mounting groove; 12. a hollow shaft I; 2. a hollow shaft II; 21. a hollow shaft II A; 22. a hollow shaft II; 221. a circular boss; 222. installing a flange; 3. an axle; 4. a clutch; 5. a brake wheel; 6. a rack gear; 7. a drive gear box; 8. a conical bearing; 9. and a middle bearing.

Detailed Description

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 some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "first," "second," and similar words, does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

In the implementation of the present application, "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, the plurality of positioning posts refers to two or more positioning posts.

The invention is further illustrated with reference to the following figures and examples.

The invention is realized by the following technical scheme, as shown in figures 1-4,

a hollow shaft structure for driving wheel pairs of a railway vehicle is sleeved outside an axle 3 and comprises a first hollow shaft 1 for mounting a driving gear box 7 and a second hollow shaft 2 which is connected with one end of the first hollow shaft 1 and is coaxially arranged; a rack gear 6 is mounted on the outer side of the hollow shaft II 2, and one end of the hollow shaft II 2, which is far away from the hollow shaft I1, is connected with a brake wheel 5 and a clutch 4; wherein the clutch 4 is sleeved on the outer side of the axle 3, and the brake wheel 5 is sleeved on the outer side of the clutch 4 and is in transmission connection with the clutch 4.

As shown in fig. 4, firstly, a hollow shaft I1 and a hollow shaft II 2 are sleeved outside an axle 3 through two sets of bearing mounting heads; secondly, connecting the hollow shaft I1 with the hollow shaft II 2; then, the driving gear box 7 is arranged on the outer diameter of the hollow shaft I1 through a bearing, and the rack gear 6 is in interference fit with the outer side of the hollow shaft II 2; the outer ring of the clutch 4 and the brake wheel 5 are fixedly arranged at the end part of the hollow shaft II 2 far away from the hollow shaft I1 through bolts.

The connection of this structure realizes the positioning of the drive gear box 7 and the positioning of the rack gear 6, and the connection with the clutch 4 realizes the conversion of the traction modes of the adhesion line and the rack line.

In some possible embodiments, one end of the hollow shaft 1 close to the hollow shaft 2 is provided with a first end face tooth, and one side of the hollow shaft 2 close to the hollow shaft 1 is provided with a second end face tooth engaged with the first end face tooth. A

The hollow shaft I1 and the hollow shaft II 2 are connected into a whole by arranging end face teeth which are meshed with each other on two end faces which are close to each other; the structural stability and the torque transmission are effectively realized;

in some possible embodiments, in order to effectively connect the hollow shaft two 2 with the axle 3, the hollow shaft two 2 comprises a hollow shaft two A21 connected with the hollow shaft one 1 and a hollow shaft two B22 connected with one end of the hollow shaft two A21 far away from the hollow shaft one 1, and the inner side surface of the hollow shaft two B22 is provided with an installation groove of the middle bearing 9 and is coaxially arranged with the axle 3.

When the second hollow shaft 2 is installed, the middle bearing 9 is sleeved on the outer side of the axle 3, and the middle bearing 9 is installed in the middle bearing 9 installation groove, so that the second hollow shaft 2 is connected with the axle 3.

In some possible embodiments, the inner diameter of the hollow shaft two a21 is the same as the inner diameter of the hollow shaft one 1; the inner diameter of the mounting groove of the intermediate bearing 9 is larger than that of the hollow shaft II A21.

Preferably, the mounting groove of the intermediate bearing 9 is annular and is arranged on the inner side surface of the hollow shaft II A21, and the axle 3 forms an annular cavity for mounting the intermediate bearing 9.

In some possible embodiments, as shown in fig. 1, 3 and 4, in order to effectively realize the connection of the brake wheel 5 and the clutch 4 with the hollow shaft two 2, a mounting flange 222 is arranged on the side of the hollow shaft two B22 far away from the hollow shaft two a21, and the mounting flange 222 is coaxial with the hollow shaft two B22.

The clutch 4 is sleeved on the axle 3 and is positioned on one side of the hollow shaft II 2 far away from the hollow shaft I1, and the clutch 4 is connected with the mounting flange 222 through bolts;

the brake wheel 5 is in transmission connection with the clutch 4 and is sleeved on the outer side of the clutch 4, and is connected with the mounting flange 222 through bolts;

in some possible embodiments, as shown in fig. 3, the inner diameter of the mounting flange 222 is the same as the inner diameter of hollow shaft two B22, and the outer diameter of the mounting flange 222 is larger than the outer diameter of hollow shaft two B22.

In some possible embodiments, as shown in fig. 1, in order to effectively connect the hollow shaft two a21 with the hollow shaft one 1, the hollow shaft two a21 is connected with the hollow shaft one 1 through bolts.

In some possible embodiments, as shown in fig. 1-4, in order to cooperate with the connection with axle 3, said first hollow shaft 1 comprises a first hollow shaft a11 connected with a second hollow shaft a21, and a first hollow shaft B12 connected with an end of a first hollow shaft a11 remote from second hollow shaft 2; the inner diameter of the first hollow shaft A11 is consistent with that of the second hollow shaft A21.

In some possible embodiments, as shown in fig. 2 and 3, the inner side surface of the first hollow shaft B12 is provided with a bearing installation groove; the inner diameter of the bearing mounting groove is larger than that of the hollow shaft II A21.

Preferably, the axle 3 mounting groove is formed on the side of the first hollow axle B12 away from the first hollow axle a11, is annular, forms an annular mounting chamber with the axle 3, and is arranged coaxially with the axle 3.

And the bearing is sleeved on the outer side of the axle 3 and is positioned in the bearing mounting groove, so that the connection between the first hollow shaft 1 and the axle 3 is realized.

In some possible embodiments, the outer side of the first hollow shaft a11 is provided with a gear box mounting groove 111; the outer side of the hollow shaft II A21 is provided with an annular boss 221.

A conical bearing 8 is arranged in the gear mounting groove, and the outer ring of the conical bearing 8 is connected with the driving gear box 7, so that the transmission connection between the first hollow shaft 1 and the driving gear box 7 is realized.

Preferably, the gear mounting grooves are annular grooves, are two groups and are arranged in parallel, and are arranged coaxially with the axle 3.

The foregoing detailed description of the embodiments of the present application has been presented, and specific examples have been applied in the present application to explain the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.