CN115042827A

CN115042827A - Diaphragm tooth type coupler and bogie with same

Info

Publication number: CN115042827A
Application number: CN202210641321.4A
Authority: CN
Inventors: 沈龙江; 张又孔; 陈国胜; 谢加辉; 赖舒平; 祝贺; 张冲
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-09-13
Also published as: WO2023236464A1

Abstract

The invention provides a diaphragm tooth type coupler and a bogie with the same, wherein the coupler comprises a coupler body, the coupler body comprises a drum-shaped fluted disc and a transmission disc, a diaphragm is arranged between the drum-shaped fluted disc and the transmission disc, and the drum-shaped fluted disc and the transmission disc are respectively connected with the diaphragm; the axial line of the coupler body is perpendicular to the plane where the diaphragm is located, two ends of the axial line of the coupler body are connecting ends, each connecting end comprises a first connecting end located on the drum-shaped fluted disc and a second connecting end located on the transmission disc, end teeth are arranged on the second connecting ends, and drum-shaped gear rings are arranged on the first connecting ends. The invention provides a coupling which does not affect the diameter of a driving gear shaft and the inner diameter of a bearing arranged on the driving gear shaft, and meets the requirements of a driving system on large transverse displacement and the radial displacement capacity between the driving gear shaft and a motor shaft.

Description

Diaphragm tooth type coupler and bogie with same

Technical Field

The invention belongs to the technical field of rail transit bogie driving connection, and particularly relates to a diaphragm tooth type coupler and a bogie with the same.

Background

In the field of medium and high speed locomotives, the pinion hollow shaft technology is a drive connection technology which is currently developed in Europe, and is also under research and development in China. With the pinion-and-quill technology, appropriate couplings must be matched to perform the relevant functions. A common Bo bogie pinion hollow shaft is driven by a double-diaphragm coupling, and Chinese utility model patent CN204641745U discloses a gear hollow shaft bogie and discloses a gear hollow shaft structure which is applicable to the Bo bogie and adopts the double-diaphragm coupling. The double diaphragm coupling has limited ability to accommodate lateral displacements and has a large additional stiffness in the event of lateral displacements. These features determine that they are generally only applicable to Bo trucks.

Chinese patent application publication No. CN101277860A discloses a compound universal joint for railway vehicles, which uses a crowned tooth and diaphragm joint, which has a large lateral displacement capability, and is commonly used for Co trucks, especially for the intermediate shaft of Co trucks, and the conventional pinion hollow shaft structure for Co trucks is shown in fig. 1 and 2. Comprises a wheel pair 1, a motor 2, a diaphragm tooth type coupling 3, a driving shaft bearing 4, a driving gear shaft 5 and other gear box components. The diaphragm tooth coupling 3 mainly comprises three parts, namely a transmission shaft 3.1, a connecting hub 3.2 and a crowned tooth assembly 3.3. The transmission shaft 3.1 penetrates through an inner hole of the driving gear shaft 5, the crowned tooth assembly 3.3 is connected with the driving gear shaft 5, and the connecting hub 3.2 and the motor shaft 10 are usually connected through interference fit.

The pinion sleeve structure of the Co bogie of CN101277860A, while capable of addressing the large lateral displacement between the wheelset and the frame and the radial displacement capability requirement between the driving gear shaft and the motor shaft in a three-axle bogie, the disadvantages are also apparent. As shown in fig. 1 and 2, since the transmission shaft 3.1 penetrates through the inner hole of the driving gear shaft 5, under a certain load, the shaft of the transmission shaft 3.1 cannot be too thin to ensure the strength and rigidity of the transmission shaft 3.1, and the transmission shaft 3.1 and the driving gear shaft 5 have a certain radial displacement, so that a certain safety clearance also needs to be left in the inner holes of the transmission shaft 3.1 and the driving gear shaft 5.

Above factors are synthesized, and transmission shaft 3.1 can lead to gear shaft 5 diameter great, and the gear shaft of great diameter can bring two problems: the first is that the diameter of a driving gear shaft gear is larger, so that the transmission ratio of a gear box is influenced; the second is that the drive shaft bearing 4 mounted on the gear shaft 5 has a larger inner diameter, and the larger the inner diameter of the bearing, the lower the maximum allowable rotational speed. The two factors are coupled and superposed to further limit the performance and the application range of the whole set of transmission system.

Disclosure of Invention

The invention aims to provide a diaphragm tooth type coupler and a bogie with the same, aiming at a pinion hollow shaft driving structure suitable for a Co bogie, on the premise of meeting the requirements of large transverse displacement between a wheel pair and a frame and radial displacement capacity between a driving gear shaft and a motor shaft, the invention lacks a coupler which does not influence the diameter of the driving gear shaft and the inner diameter of a bearing arranged on the driving gear shaft, and limits the performance improvement of the whole set of transmission system. The invention aims to solve the problem of providing a coupling which does not influence the diameter of a driving gear shaft and the inner diameter of a bearing arranged on the driving gear shaft and meets the requirements of a driving system on large transverse displacement and the radial displacement capacity between the driving gear shaft and a motor shaft.

In order to solve the technical problems, the specific technical scheme of the invention is as follows:

a diaphragm tooth type coupler comprises a coupler body, wherein the coupler body comprises a drum-shaped fluted disc and a transmission disc, a diaphragm is arranged between the drum-shaped fluted disc and the transmission disc, and the drum-shaped fluted disc and the transmission disc are respectively connected with the diaphragm;

the coupling comprises a coupling body and is characterized in that the two axial ends of the coupling body are connecting ends, each connecting end comprises a first connecting end located on the drum-shaped fluted disc and a second connecting end located on the transmission disc, a drum-shaped gear ring is arranged on each first connecting end, and end teeth are arranged on each second connecting end.

Through the structure, the crowned tooth structure and the diaphragm structure are integrated, the requirements of the Co bogie on axial displacement and radial displacement are met, and meanwhile, the problem that a coupler transmission shaft penetrates through an inner hole of a driving gear shaft in CN101277860A in the prior art is solved. Therefore, the driving shaft gear can adopt a gear with a smaller diameter, the bearing can adopt a bearing with a smaller inner diameter, the transmission ratio range is enlarged, the maximum rotating speed of the driving shaft bearing is increased, and the application range of the driving system can be further expanded.

Furthermore, a drum-shaped fluted disc extending arm extending in the radial direction is arranged on the drum-shaped fluted disc, a transmission disc extending arm extending in the radial direction is arranged on the transmission disc, and the drum-shaped fluted disc extending arm and the transmission disc extending arm are both connected with the diaphragm.

Based on the same design concept, the invention also provides a bogie which comprises a wheel pair, a driving device and a transmission device, wherein the driving device and the transmission device drive the wheel pair to rotate; the second connecting end is connected with a driving gear shaft of the transmission device through a screw. The diaphragm gear coupling is positioned between the motor shaft and the driving gear shaft and does not pass through the pinion shaft. The tooth portion of the coupling can provide large lateral displacements with little additional stiffness. The diaphragm and crown cooperate to provide the desired radial displacement between the motor shaft and the drive gear shaft.

Based on the same design concept, the invention also provides another bogie which comprises a wheel pair, a driving device and a transmission device, wherein the driving device and the transmission device are used for driving the wheel pair to rotate; the second connecting end is connected with a driving gear shaft of the transmission device through a screw.

Therefore, the drum-shaped gear ring of the first connecting end is connected with the motor shaft in an interference fit mode, the connecting end face teeth are omitted, the sliding bush is arranged between the interference fit connecting faces, normal torque load of the motor can be transmitted, and when the motor is abnormally large in torque, the sliding bush can be caused to slip to block abnormal torque transmission.

The diaphragm tooth type coupler and the bogie with the same have the following advantages that: the coupling does not affect the diameter of the driving gear shaft and the inner diameter of a bearing arranged on the driving gear shaft, and meets the requirements of a driving system on large transverse displacement and the radial displacement capacity between the driving gear shaft and a motor shaft.

Drawings

FIG. 1 is a schematic diagram of a conventional hollow pinion shaft structure suitable for a Co bogie;

FIG. 2 is a schematic diagram of a conventional geared coupling for a Co truck;

FIG. 3 illustrates a diaphragm tooth coupling and its driving device in accordance with the present invention;

FIG. 4 is an enlarged view of FIG. 3 at I (first embodiment);

FIG. 5 is an enlarged view of FIG. 3 at I (second embodiment);

fig. 6 (a) shows a first coupling end of the coupling body according to the first embodiment; (B) is the second connecting end of the coupling body of the first embodiment.

The notation in the figure is: 1. a wheel set; 2. a motor; 3. A diaphragm tooth coupling; 3.1, a transmission shaft; 3.2, connecting a hub; 3.3, assembling the crowned teeth; 4. a drive shaft bearing; 5. a driving gear shaft; 10. a motor shaft; 11. a drum-shaped ring gear; 13. a membrane; 20. A coupling body; 21. a drum-shaped fluted disc; 22. a drive plate; 23. a first connection end; 24. a second connection end; 25. a drum-shaped fluted disc extending arm; 26. extending the arm of the transmission disc; 27. a drive device; 28. a transmission device; 29. a screw; 30. a drum-shaped gear ring shaft sleeve; 100. and end teeth.

Detailed Description

For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

As shown in fig. 3 and 4, the diaphragm tooth type coupler of the present invention includes a coupler body 20, where the coupler body 20 includes a drum-shaped toothed disc 21 and a transmission disc 22, a diaphragm 13 is disposed between the drum-shaped toothed disc 21 and the transmission disc 22, a drum-shaped toothed disc extending arm 25 extending in a radial direction is disposed on the drum-shaped toothed disc 21, a transmission disc extending arm 26 extending in the radial direction is disposed on the transmission disc 22, and both the drum-shaped toothed disc extending arm 25 and the transmission disc extending arm 26 are connected to the diaphragm 13.

As shown in fig. 3 and 6, both axial ends of the coupling body 20 are connection ends, each connection end includes a first connection end 23 located on the drum-shaped toothed disc 21 and a second connection end 24 located on the transmission disc 22, the first connection end 23 is provided with the drum-shaped gear ring 11, and the second connection end 24 is provided with the end tooth 100.

As shown in fig. 3, the present invention further provides a bogie, which comprises a wheel set 1, and a driving device 27 and a transmission device 28 for driving the wheel set 1 to rotate, wherein the diaphragm tooth coupling of the present invention is connected between the driving device 27 and the transmission device 28.

As shown in fig. 3, 4 and 6, as a first embodiment of the present invention, the first connection end 23 of the coupling body 20 is connected with the motor shaft 10 of the driving device 27 by a screw 29, and an end tooth 100 is provided between the crown gear 11 and the motor shaft 10; the second connection 24 is connected to the drive gear shaft 15 of the gear unit 28 by means of screws 29.

As shown in fig. 3, 5 and 6, as a second embodiment of the present invention, one end of the drum-shaped ring gear 11 of the first connection end 23 extends axially to form a drum-shaped ring gear shaft sleeve 30, the drum-shaped ring gear shaft sleeve 30 is connected with the motor shaft 10 in an interference fit manner, and a sliding bush is disposed between the interference fit connection surfaces; the second connection 24 is connected to the drive gear shaft 15 of the gear unit 28 by means of screws 29.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The diaphragm tooth type coupler is characterized by comprising a coupler body (20), wherein the coupler body (20) comprises a drum-shaped fluted disc (21) and a transmission disc (22), a diaphragm (13) is arranged between the drum-shaped fluted disc (21) and the transmission disc (22), and the drum-shaped fluted disc (21) and the transmission disc (22) are respectively connected with the diaphragm (13);

the coupler comprises a coupler body (20), wherein two axial ends of the coupler body are connecting ends, each connecting end comprises a first connecting end (23) located on a drum-shaped fluted disc (21) and a second connecting end (24) located on a transmission disc (22), a drum-shaped gear ring (11) is arranged on each first connecting end (23), and end teeth (100) are arranged on each second connecting end (24).

2. The diaphragm tooth coupling according to claim 1, wherein a radially extending arm (25) of the crown gear (21) is provided, a radially extending arm (26) of the transmission disc (22) is provided, and both the arm (25) of the crown gear and the arm (26) of the transmission disc are connected to the diaphragm (13).

3. A bogie comprising a wheel set (1) and a driving device (27) and a transmission device (28) for driving the wheel set (1) to rotate, characterized in that a diaphragm tooth type coupling as claimed in claim 1 or 2 is connected between the driving device (27) and the transmission device (28), the first connecting end (23) is connected with a motor shaft (10) of the driving device (27) through a screw (29), and an end tooth (100) is arranged between the drum-shaped gear ring (11) and the motor shaft (10); the second connecting end (24) is connected with a driving gear shaft (5) of the transmission device (28) through a screw (29).

4. A bogie comprises a wheel pair (1), a driving device (27) and a transmission device (28) for driving the wheel pair (1) to rotate, and is characterized in that the diaphragm tooth type coupling as claimed in claim 1 or 2 is connected between the driving device (27) and the transmission device (28), one end of a drum-shaped gear ring (11) of a first connecting end (23) extends axially to form a drum-shaped gear ring shaft sleeve (30), and the drum-shaped gear ring shaft sleeve (30) is connected with a motor shaft (10) in an interference fit manner; the second connecting end (24) is connected with a driving gear shaft (5) of the transmission device (28) through a screw (29).

5. A bogie as claimed in claim 4, characterised in that a slip bush is provided between the connecting surface of the ring gear sleeve (30) and the motor shaft (10).