CN111231996A

CN111231996A - Driving device, bogie and locomotive

Info

Publication number: CN111231996A
Application number: CN202010031158.0A
Authority: CN
Inventors: 何烨; 沈龙江; 易兴利; 祝贺; 谢加辉; 高彬; 李振华; 张又孔; 张冲; 邹文辉; 肖泽桦
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-06-05
Anticipated expiration: 2040-01-13
Also published as: CN111231996B

Abstract

The invention discloses a driving device, a bogie and a locomotive, which comprise a traction motor, a speed reducing mechanism, a flexible plate coupling, a drum gear and an axle, wherein an output shaft of the traction motor is connected with a power input end of the speed reducing mechanism, a power output end of the speed reducing mechanism is a hollow structure penetrating through the speed reducing mechanism, the axle sequentially penetrates through the flexible plate coupling and the power output end of the speed reducing mechanism, the power input end of the flexible plate coupling is connected with the power output end of the speed reducing mechanism, and the power output end of the flexible plate coupling only transmits torque to the axle through the drum gear. In the process, the matching of the flexible plate coupling and the crowned gear can compensate the axial, radial and angular displacement between the output shaft of the traction motor and the axle, thereby meeting the installation requirement of the suspension of the traction motor. The cooperation of the coupling and the crown gear saves radial space on the whole drive, in particular on both ends of the axle.

Description

Driving device, bogie and locomotive

Technical Field

The invention relates to the technical field of rail transit, in particular to a driving device, a bogie and a locomotive.

Background

A motor and a driving gear in a bogie of the elastic suspension driving device are suspended on a framework, and in order to adapt to relative displacement between an input shaft (a motor shaft and a driving gear shaft) and an output shaft (an axle) when a locomotive runs, a six-link hollow shaft is adopted to transmit traction and braking torque between a driven gear and wheels, and relative position change of the input shaft and the output shaft is borne through a six-link rubber joint. Because the six-link mechanism has a complex structure and occupies a large radial space, a wheel disc braking mode can be adopted when a wheel with a large wheel diameter is adopted, and if a wheel with a small wheel diameter is adopted, the wheel disc braking cannot be installed due to the limited radial space, so that the braking mode becomes a key problem for restricting the bogie of the locomotive with the small wheel diameter.

Therefore, how to reduce the radial space of the driving device is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a driving device, a bogie and a locomotive, which aims to solve the technical problem of how to reduce the radial space of the driving device.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a driving device, includes traction motor, reduction gears, flexbile plate shaft coupling, crown gear and axletree, wherein, traction motor's output shaft with reduction gears's power input end links to each other, reduction gears's power take off end is for running through reduction gears's hollow structure, the axletree passes in proper order the flexbile plate shaft coupling with reduction gears's power take off end, the power input end of flexbile plate shaft coupling with reduction gears's power take off end is connected, just the power take off end of flexbile plate shaft coupling only passes through crown gear to axletree transmission moment.

In one embodiment of the present invention, the speed reducing mechanism includes a speed reducing housing, a power input shaft, a power output shaft, a driving gear and a driven gear, wherein the power input shaft is rotatably disposed on the speed reducing housing as a power input end of the speed reducing mechanism, the power output shaft is rotatably disposed on the speed reducing housing as a power output end of the speed reducing mechanism, the driving gear and the driven gear are disposed inside the speed reducing housing, the driving gear is fixed on the power input shaft, the driven gear is fixed on the power output shaft, and the driving gear transmits torque output by an output shaft of the traction motor to the driven gear.

In one embodiment of the invention, one end of the power output shaft, which is close to the flexible plate coupling, is provided with a face tooth, and the power output shaft is matched with the flexible plate coupling through the face tooth.

In one embodiment of the invention, a bearing is arranged between the power output shaft and the speed reduction shell.

In one embodiment of the present invention, the power output end of the flexplate coupling is coupled to the crown gear via a crown gear.

The invention also discloses a bogie which comprises a framework, wheels, a disc brake disc and the driving device, wherein a traction motor of the driving device is fixed on a cross beam of the framework, an input end of a speed reducing mechanism of the driving device is fixed on the framework through the traction motor, an output end of the driving device is rotatably arranged on a flexible plate coupling, an axle of the driving device is rotatably arranged on a side beam of the framework, the wheels are arranged on the axle of the driving device, and the disc is arranged on the wheels.

In one embodiment of the present invention, a series of shock absorbers are provided between the side member of the frame and the axle.

In one embodiment of the invention, a secondary buffer is arranged in the middle of the side beam of the framework.

The invention also discloses a locomotive comprising the bogie.

According to the technical scheme, the torque output by the traction motor in the driving device is transmitted to the power input end of the speed reducing mechanism, is subjected to speed reduction under the action of the speed reducing mechanism, is output by the power output end of the speed reducing mechanism, is transmitted to the power input end of the flexible plate coupling, is transmitted to the drum gear by the power output end of the flexible plate coupling, and is finally transmitted to the axle. In the process, the matching of the flexible plate coupling and the crowned gear can compensate the axial, radial and angular displacement between the output shaft of the traction motor and the axle, thereby meeting the installation requirement of the suspension of the traction motor. In addition, the cooperation of the coupling and the crown gear makes it possible to save radial space on the whole drive, in particular on both ends of the axle, even for small-diameter wheels, which make disc brakes possible due to the presence of sufficient radial space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic front view of a driving device according to an embodiment of the present invention;

fig. 2 is a schematic front view of a bogie according to an embodiment of the present invention;

in the drawing, 100 denotes a traction motor, 200 denotes a reduction mechanism, 300 denotes a flexible plate coupling, 400 denotes a crown gear, 500 denotes an axle, 600 denotes a wheel, 700 denotes a disc brake disc, 800 denotes a frame, 201 denotes a reduction housing, 202 denotes a power input shaft, 203 denotes a power output shaft, 204 denotes a drive gear, 205 denotes a driven gear, and denotes a side member and a cross member.

Detailed Description

The core of the invention is to provide a driving device, a bogie and a locomotive, so as to reduce the radial space of the driving device.

The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

To this end, referring to fig. 1, the driving device 1 according to the embodiment of the present invention includes a traction motor 100, a speed reduction mechanism 200, a flexible plate coupling 300, a crown gear 400, and an axle 500, wherein an output shaft of the traction motor 100 is connected to a power input end of the speed reduction mechanism 200, a power output end of the speed reduction mechanism 200 is a hollow structure penetrating through the speed reduction mechanism 200, the axle 500 sequentially penetrates through the flexible plate coupling 300 and the power output end of the speed reduction mechanism 200, the power input end of the flexible plate coupling 300 is connected to the power output end of the speed reduction mechanism 200, and the power output end of the flexible plate coupling 300 only transmits torque to the axle 500 through the crown gear 400.

The torque output by the traction motor 100 in the driving device of the present invention is transmitted to the power input end of the reduction mechanism 200, is subjected to a reduction process under the action of the reduction mechanism 200, is output from the power output end of the reduction mechanism 200, is transmitted to the power input end of the flexible plate coupling 300, is transmitted to the drum gear 400 from the power output end of the flexible plate coupling 300, and is finally transmitted to the axle 500. The cooperation of the flexplate coupling 300 and the crown gear 400 during the above process compensates for axial, radial, and angular displacements between the traction motor 100 output shaft and the axle 500 to meet the mounting requirements of the traction motor 100 suspension. In addition, the cooperation of the coupling and crown gear 400 allows to save radial space on the whole drive, in particular on both ends of the axle 500, even if the small-diameter wheel 600 makes it possible to use the disc brake disc 700 due to the presence of sufficient radial space.

The reduction mechanism 200 is a gear reduction mechanism 200, and is, for example, a primary gear reduction mechanism 200, a secondary gear reduction mechanism 200, a tertiary gear reduction mechanism 200, or the like. Taking the primary gear reduction mechanism 200 as an example, the reduction mechanism 200 includes a reduction housing 201, a power input shaft 202, a power output shaft 203, a driving gear 204 and a driven gear 205, wherein the power input shaft 202 is rotatably disposed on the reduction housing 201 as a power input end of the reduction mechanism 200, the power output shaft 203 is rotatably disposed on the reduction housing 201 as a power output end of the reduction mechanism 200, the driving gear 204 and the driven gear 205 are disposed inside the reduction housing 201, the driving gear 204 is fixed on the power input shaft 202, the driven gear 205 is fixed on the power output shaft 203, and the driving gear 204 transmits torque output by an output shaft of the traction motor 100 to the driven gear 205.

Since the power output shaft 203 is of a hollow structure, the axle 500 can be accommodated to pass through, and therefore the radial occupied space of the driving device can be reduced. In order to reduce the friction with the reduction housing 201 during rotation of the power take-off shaft 203, a bearing is provided between the power take-off shaft 203 and the reduction housing 201.

In order to further save the radial space occupied by the driving device, the end of the power output shaft 203 close to the flexible plate coupling 300 is provided with face teeth, and is matched with the flexible plate coupling 300 through the face teeth. Since the power output shaft 203 is provided with the face teeth, and the torque transmission between the power output shaft 203 and the flexible plate coupling 300 is realized through the face teeth, the flexible plate coupling 300 can be coaxially arranged with the power output shaft 203, thereby saving the radial space occupied by the coupling. In addition, the face teeth have a self-centering function during meshing, so that angular displacement of the power output shaft 203 and the axle 500 can be compensated.

In a further aspect, the power output of the flexplate coupling 300 is coupled to the crown gear 400 via a crown gear. Since the crown gear 400 has an automatic centering function, the axle 500 at one end of the crown gear 400 can compensate for the angular displacement between the axle 500 at this end and the power take-off shaft 203.

Referring to fig. 2, the present invention further discloses a bogie, comprising a frame 800, a wheel 600, a disc brake disc 700 and a driving device as described above, wherein the traction motor 200 of the driving device is fixed on the cross beam of the frame 800, the input end of the reduction mechanism 200 of the driving device is fixed on the frame 800 through the traction motor 200, the output end of the driving device is rotatably disposed on the flexible plate coupling 300, the axle 500 of the driving device is rotatably disposed on the side beam of the frame 800, the wheel 600 is disposed on the axle 500 of the driving device, and the disc is disposed on the wheel 600. Since the above-mentioned driving device has the above-mentioned advantages, the bogie comprising the driving device has corresponding effects, and the detailed description is omitted here.

In order to improve the shock-absorbing and noise-reducing effects, a series of shock-absorbing members are provided between the side members of the frame 800 and the axle 500. The primary cushion member may be a metal coil spring which is generally used in the conventional bogie, but in order to reduce the weight and reduce the noise as much as possible, the primary cushion member 3 in the present embodiment is preferably made of a rubber spring.

Further, a secondary cushion is provided in the middle of the side member of the frame 800. The secondary buffer part is an air spring, and the air spring is used as the buffer part in the vehicle body suspension system, so that the comfort of a carriage can be effectively improved, and the noise of the bogie can be effectively reduced.

The invention also discloses a locomotive comprising the bogie. Since the bogie has the beneficial effects, the locomotive comprising the bogie has corresponding effects, and the detailed description is omitted here.

In the description of the present application, it should be noted that the terms "center", "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, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a driving device, its characterized in that, includes traction motor, reduction gears, flexbile plate shaft coupling, cydariform gear and axletree, wherein, traction motor's output shaft with reduction gears's power input end links to each other, reduction gears's power take off end is for running through reduction gears's hollow structure, the axletree passes in proper order the flexbile plate shaft coupling with reduction gears's power take off end, the power input end of flexbile plate shaft coupling with reduction gears's power take off end is connected, just the power take off end of flexbile plate shaft coupling only passes through cydariform gear to axletree transmission moment.

2. The drive device according to claim 1, wherein the speed reduction mechanism includes a speed reduction housing, a power input shaft, a power output shaft, a driving gear, and a driven gear, wherein the power input shaft is rotatably provided on the speed reduction housing as a power input end of the speed reduction mechanism, the power output shaft is rotatably provided on the speed reduction housing as a power output end of the speed reduction mechanism, the driving gear and the driven gear are provided inside the speed reduction housing, the driving gear is fixed on the power input shaft, the driven gear is fixed on the power output shaft, and the driving gear transmits torque output from an output shaft of the traction motor to the driven gear.

3. A drive arrangement as claimed in claim 2, wherein the power take-off shaft is provided with face teeth at an end thereof adjacent the flexplate coupling and engages the flexplate coupling via the face teeth.

4. A drive arrangement as claimed in claim 2, in which a bearing is provided between the power take-off shaft and the reduction housing.

5. The drive of claim 1, wherein the power output end of the flexplate coupling engages the crown gear via a crown tooth.

6. A bogie comprising a frame, wheels, a disc brake disc and a drive unit as claimed in any one of claims 1 to 5, wherein a traction motor of the drive unit is fixed to a cross member of the frame, an input end of a reduction gear of the drive unit is fixed to the frame via the traction motor, an output end of the drive unit is rotatably provided on a flexible plate coupling, an axle of the drive unit is rotatably provided on a side member of the frame, the wheels are provided on the axle of the drive unit, and the disc is provided on the wheels.

7. The truck of claim 6 wherein a series of bumpers are provided between the side beams of the frame and the axle.

8. A bogie as claimed in claim 6 in which secondary bumpers are provided at the central portions of the side beams of the frame.

9. A locomotive comprising a bogie as claimed in any one of claims 6 to 8.