CN206860839U - Transmission device and there is its monorail train - Google Patents

Abstract

This utility model provides a transmission device and a monorail train having the same. The transmission device includes: a housing; an input shaft assembly disposed within the housing; an output shaft assembly disposed within the housing, the input shaft assembly and the output shaft assembly being drivenly connected, the axis of the output shaft assembly being horizontally positioned, and the axis of the input shaft assembly forming an angle with the horizontal plane; and a lubrication unit disposed on the output shaft assembly, the output shaft assembly driving the lubrication unit to lubricate the input shaft assembly. The technical solution of this utility model solves the problem of difficult lubrication of internal components of gearboxes in the prior art.

Description

Transmission device and monorail train having same

technical field

The utility model relates to the technical field of locomotive transmission, in particular to a transmission device and a monorail train with the same.

Background technique

At present, monorail vehicles are mainly divided into straddle monorail vehicles and suspension monorail vehicles. Since the bogie space of a monorail car is very limited, especially the lateral and vertical space is smaller, the components of the bogie drive system are usually arranged longitudinally to meet the space requirements when designing the bogie drive system. In this way, the motor is arranged longitudinally, and due to the limited space of the guide wheels on both sides of the bogie, the motor even forms an included angle with the horizontal plane. The earth is difficult.

Utility model content

The utility model provides a transmission device and a monorail train equipped with the same, to solve the problem of difficult lubrication of the internal parts of the gearbox in the prior art.

According to one aspect of the present invention, a transmission device is provided, including: a box body; an input shaft assembly arranged in the box body; an output shaft assembly arranged in the box body, the input shaft assembly and the output shaft assembly are drivingly connected, and the output shaft assembly The axis of the assembly is arranged horizontally, and there is an included angle between the axis of the input shaft assembly and the horizontal plane; the lubricating unit is arranged on the output shaft assembly, and the output shaft assembly drives the lubricating unit to lubricate the input shaft assembly.

Further, the lubricating unit includes an oil throwing ring, and the oil throwing ring is sleeved on the output shaft assembly.

Further, the oil throwing ring includes: an oil throwing body; an oil throwing blade, the oil throwing blade is arranged on the oil throwing body, and the oil is thrown onto the input shaft assembly through the oil throwing blade.

Further, the transmission device further includes an oil deflector, which is arranged in the case and corresponding to the oil flinger, and the oil deflector can transmit the oil thrown off by the oil flinger to the input shaft assembly.

Further, an oil retaining groove is arranged on the box body, and the oil retaining groove forms an oil retaining portion.

Further, the input shaft assembly includes a first bearing unit and an input shaft, the input shaft is rotatably arranged in the casing through the first bearing unit, and the oil flinger cooperates with the oil deflector to lubricate the first bearing unit.

Further, the transmission device further includes a transmission unit, and the input shaft assembly is drivingly connected to the output shaft assembly through the transmission unit.

Further, the transmission unit includes a bevel gear assembly, and the input shaft assembly is connected with the output shaft assembly through the bevel gear assembly.

Further, the output shaft assembly includes a first output shaft, a second output shaft, an intermediate shaft and a differential, the input shaft assembly is drivingly connected to the intermediate shaft, the differential is fixedly connected to the intermediate shaft, and the differential is respectively connected to the first output shaft and the second output shaft.

Further, the lubricating unit is arranged on the intermediate shaft.

Further, the box body includes: an upper box body, in which the input shaft assembly is arranged; a lower box body, which is detachably connected with the upper box body, and the output shaft assembly is arranged in the accommodation cavity formed by the upper box body and the lower box body.

According to another aspect of the present utility model, a monorail train is provided, including a transmission device, and the transmission device is the transmission device provided above.

Applying the technical scheme of the utility model, by configuring the axis of the output shaft assembly to be horizontal, there is an angle between the axis of the input shaft assembly and the horizontal plane, which can save longitudinal space, and the lubrication unit is arranged on the output shaft assembly, through The output shaft assembly drives the lubricating unit to lubricate the input shaft assembly to achieve lubrication of high-position components. Compared with the prior art, this configuration mode drives the lubricating unit to move through the output shaft assembly, so that high-level components can be effectively lubricated conveniently and efficiently, and the working performance of the transmission device can also be improved.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 shows a schematic structural diagram of a transmission provided according to an embodiment of the present invention;

Fig. 2 shows the A-A cross-sectional view of the transmission device in Fig. 1;

Fig. 3 shows the P direction view of transmission device in Fig. 1;

Fig. 4 shows a schematic structural diagram of a differential provided according to an embodiment of the present invention.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Box body; 11. Upper box body; 12. Lower box body; 13. First bolt; 14. Elastic connection plane; 15. Connecting flange; 16. Installation port; 20. Input shaft assembly; 21. First Bearing unit; 22, input shaft; 30, output shaft assembly; 31, first output shaft; 32, second output shaft; 33, intermediate shaft; 34, differential; 341, third bevel gear; 342, first Planetary carrier; 343, second planetary carrier; 344, fourth bevel gear; 40, lubricating unit; 41, oil throwing body; 42, oil throwing blade; 50, oil retaining part; 60, transmission unit; 61, driving bevel gear ;62, driven bevel gear; 70, oil level; 80, magnetic oil plug; 90, sealing part; 100, first tapered roller bearing; 110, second tapered roller bearing; 120, second bolt; 130, The first oil seal; 140, the first output shaft casing; 150, the second output shaft casing; 160, the second oil seal; 170, the third tapered roller bearing; 180, the fourth tapered roller bearing; 190, bearing seat ; 200, the first hub flange; 210, the second hub flange; 220, the adjusting gasket; 230, the third bolt.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present utility model, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate The orientation or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the referred device Or elements must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as limiting the protection scope of the present utility model; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the scope of protection of the utility model.

As shown in Figures 1 to 4, a transmission device is provided according to a specific embodiment of the present invention, the transmission device includes a casing 10, an input shaft assembly 20, an output shaft assembly 30 and a lubricating unit 40, wherein the input shaft The assembly 20 is arranged in the box body 10, the output shaft assembly 30 is arranged in the box body, the input shaft assembly 20 is drivingly connected with the output shaft assembly 30, the axis of the output shaft assembly 30 is arranged horizontally, and there is a gap between the axis of the input shaft assembly 20 and the horizontal plane. Included angle, the lubricating unit 40 is arranged on the output shaft assembly 30 , and the output shaft assembly 30 drives the lubricating unit 40 to lubricate the input shaft assembly 20 .

With this arrangement, by configuring the axis of the output shaft assembly 30 to be horizontal, there is an angle α between the axis of the input shaft assembly 20 and the horizontal plane, which can save longitudinal space, and the lubrication unit 40 is arranged on the output shaft assembly 30 Above all, the lubricating unit 40 is driven by the output shaft assembly 30 to lubricate the input shaft assembly 20 so as to realize the lubricating effect on high-level components. Compared with the prior art, this configuration mode drives the lubricating unit to move through the output shaft assembly, so that high-level components can be lubricated conveniently and efficiently, and the working performance of the transmission device can also be improved. Wherein, in the present utility model, the range of the included angle α may be 0-45°.

In the present invention, considering the complexity of the process and the lubricating effect, the lubricating unit 40 can be configured to include an oil throwing ring, and the oil throwing ring is sleeved on the output shaft assembly 30 . As shown in Figure 2, the output shaft assembly 30 moves under the drive of the input shaft assembly 20, the action of the output shaft assembly 30 can drive the oil throwing ring sleeved on it to rotate, and the oil throwing ring can throw the oil in the oil tank to on the input shaft assembly 20 to lubricate the input shaft assembly 20 .

In order to improve the oil throwing effect, in the utility model, the oil throwing ring can be configured to include the oil throwing body 41 and the oil throwing blade 42, the oil throwing blade 42 is arranged on the oil throwing body 41, and the oil liquid Throw it onto the input shaft assembly 20. Specifically, as a specific embodiment of the present utility model, considering the oil throwing effect of the oil throwing blades, the oil throwing blades 42 can be set as "eight" shaped distribution blades, wherein the oil throwing blades 42 and the oil throwing body 41 It can be integrally formed or fixedly connected together by connectors. With this configuration method, since the blades are distributed in an "eight" shape, it can achieve the purpose of two-way oil rejection, thereby increasing the oil rejection effect.

Further, in order to improve the lubricating effect on the rotating unit of the input shaft assembly 20, the transmission device can be configured to further include an oil deflector 50, which is arranged in the box body 10 and corresponding to the oil throwing ring, and the oil deflector The part 50 can transmit the oil thrown off by the oil flinger to the input shaft assembly 20 . Applying this configuration method, by configuring the oil deflector 50, when the oil flinger moves to throw the oil to the oil deflector 50, the oil deflector 50 exerts a counter force on the flung oil, and the oil can be rebounded to the part to be lubricated. As a specific embodiment of the present utility model, the oil deflector 50 is arranged at the position of the input shaft assembly 20 close to the first bearing unit 21, and the oil flinger acts to throw the oil to the oil deflector 50, because the oil deflector 50 is close to the first bearing unit 21 , so that the oil deflector 50 can rebound the oil to the first bearing unit 21 to improve the lubricating effect on the first bearing unit 21 .

In order to simplify the structure of the transmission device and improve the compactness of the structure, an oil retaining groove can be provided on the casing, and the oil retaining groove forms the oil retaining portion 50 . Specifically, as shown in Figure 1, the oil retaining groove can be directly formed when the box is formed, and the number of the oil retaining groove can be one or more, and there is no limitation here, as long as the first bearing unit can be realized 21 effective lubrication.

Further, in the present utility model, in order to drive the rotation of the output shaft assembly 30, the input shaft assembly 20 may be configured to include a first bearing unit 21 and an input shaft 22, and the input shaft 22 is rotatably arranged through the first bearing unit 21 In the box body 10 , the oil flinger cooperates with the oil deflector 50 to lubricate the first bearing unit 21 .

Specifically, as shown in FIG. 2, the first bearing unit 21 includes a bearing seat 190, a first tapered roller bearing 100 and a second tapered roller bearing 110, and the bearing seat 190 is provided at the position of the input shaft in the box body 10, The input shaft 22 is mounted on the bearing housing 190 through the first tapered roller bearing 100 and the second tapered roller bearing 110 . Wherein, an oil retaining groove for lubricating the first tapered roller bearing 100 and the second tapered roller bearing 110 is provided on the upper part of the casing 10 close to the input shaft 22 . In order to improve the sealing effect of the casing 10 , a sealing portion 90 may be provided at the end position of the connection between the input shaft 22 and the casing 10 . Further, in order to further improve the sealing effect of the box body 10, the sealing portion 90 may be selected as a labyrinth sealing portion.

In the present invention, in order to realize power transmission, the transmission device further includes a transmission unit 60 through which the input shaft assembly 20 is drivingly connected to the output shaft assembly 30 . Further, in order to save longitudinal space, the transmission unit 60 may be configured to include a bevel gear assembly, and the input shaft assembly 20 is connected to the output shaft assembly 30 through the bevel gear assembly. Specifically, as shown in Figure 2, a driving bevel gear 61 is provided on the input shaft 22, and the output shaft assembly 30 includes an intermediate shaft 33, and a driven bevel gear 62 is provided on the intermediate shaft 33. When the transmission works, the input The shaft 22 rotates to drive the driving bevel gear 61 to move. The driving bevel gear 61 meshes with the driven bevel gear 62 to transmit torque and speed. The rotation of the driven bevel gear 62 can drive the intermediate shaft 33 fixedly connected with it to rotate. In the present invention, the driven bevel gear 62 can be fixedly connected with the intermediate shaft 33 through the second bolt 120 .

In the present utility model, in order to realize the wheel speed difference on both sides and compensate the travel difference of the two wheels to reduce wheel wear when the vehicle passes a track with a small curve radius, the output shaft assembly 30 can be configured to include a first output Shaft 31, second output shaft 32, intermediate shaft 33 and differential 34, input shaft assembly 20 is drivingly connected to intermediate shaft 33, differential 34 is fixedly connected to intermediate shaft 33, and differential 34 is respectively connected to the first output shaft 31 and the second output shaft 32.

Specifically, as shown in FIG. 2, both ends of the intermediate shaft 33 are installed on the first output shaft case 140 and the second output shaft case 150 through the second bearing unit. Specifically, the second bearing unit includes a third cone The roller bearing 170 and the fourth tapered roller bearing 180, the two ends of the intermediate shaft 33 are installed on the first output shaft casing 140 and the second output shaft casing through the third tapered roller bearing 170 and the fourth tapered roller bearing 180 body 150. In order to adjust the clearance between the bearings and the clearance between the gears, an adjusting washer 220 is provided between the second output shaft case 150 and the fourth tapered roller bearing 180 . Similarly, an adjusting shim is provided between the first output shaft case 140 and the third tapered roller bearing 170 to adjust the gap between the bearings and the contact between the gears.

As shown in FIG. 2 , the differential 34 is arranged in the intermediate shaft 33 , and the specific structure of the differential 34 is shown in FIG. 4 . The differential 34 includes two planetary carriers, namely a first planetary carrier 342 and a second planetary carrier 343 , and a third bevel gear 341 and a fourth bevel gear 344 . Wherein, when the transmission device is working, the input shaft 22 rotates to drive the action of the driving bevel gear 61, and the driving bevel gear 61 meshes with the driven bevel gear 62 to transmit torque and speed. The shaft 33 rotates. The rotation of the intermediate shaft 33 drives the first planetary carrier 342 and the second planetary carrier 343 to rotate synchronously, and the first planetary carrier 342 and the second planetary carrier 343 drive the third bevel gear 341 and the fourth bevel gear through the planetary gears arranged at their ends. The gear 344 rotates, thereby driving the wheels respectively connected with the third bevel gear 341 and the fourth bevel gear 344 to rotate.

Specifically, when the vehicle is in a straight-ahead state, the planetary gears on the planet carrier have no relative motion because the stress on the two wheels is the same; when the vehicle is in a turning state, because the turning radius of the two wheels is different, the two wheels will There is a tendency to slip, resulting in two different slip forces, which act on the planetary gears. At this time, the planetary gears rotate accordingly, allowing the two wheels to pass through the curve at different rotation speeds. Thereby avoiding the movement of the wheels in a rolling and sliding manner, effectively reducing energy consumption and wear of the wheels.

In the present invention, the third bevel gear 341 is connected to the second output shaft 32 close to the fourth tapered roller bearing 180 , and the fourth bevel gear 344 is connected to the first output shaft 31 close to the third tapered roller bearing 170 . Wherein, considering connection reliability and convenience, the third bevel gear 341 can be set to be connected with the second output shaft 32 close to the fourth tapered roller bearing 180 by splines, and the fourth bevel gear 344 is connected with the second output shaft 32 close to the third conical roller bearing 180. The first output shaft 31 of the roller bearing 170 is connected by a spline.

Further, in order to drive the lubricating unit 40 to move through the rotation of the intermediate shaft 33 , the lubricating unit 40 can be sleeved on the intermediate shaft 33 . Wherein, the lubricating unit 40 can be set as an oil throwing ring, and one side of the oil throwing body 41 of the oil throwing ring is distributed with an oil throwing blade 42 in the shape of "eight", and when the intermediate shaft 33 rotates, the oil throwing ring is driven to rotate, and the oil throwing ring is rotated. The oil vane 42 stirs the lubricating oil inside the gear box, throws it onto the box wall and the baffle groove, and acts on the oil through the baffle groove, so that the oil enters the bearing seat 190 to lubricate the first The tapered roller bearing 100 and the second tapered roller bearing 110 .

In the utility model, in order to facilitate the assembly and disassembly of parts, the box body 10 can be configured to include an upper box body 11 and a lower box body 12, wherein the input shaft assembly 20 is arranged in the upper box body 11, and the lower box body 12 and the lower box body The upper case 11 is detachably connected, and the output shaft assembly 30 is disposed in the accommodation cavity formed by the upper case 11 and the lower case 12 . Specifically, as shown in Figure 1, the upper box body 11 and the lower box body 12 are detachably connected along the center line of the intermediate shaft 33, and in order to facilitate the installation of shock absorbing springs, an elastic connection plane is installed on the upper box body 11. 14. The upper box body 11 and the lower box body 12 can be connected by first bolts 13 .

Further, in order to facilitate the connection with the motor, a motor connecting flange 15 rigidly connected to the motor is provided at the input end of the upper case 11, and a connecting flange 15 is provided on one side of the connecting flange 15 to install and disassemble the coupling. The installation port 16 can ensure the cooling air circulation of the motor at the same time. Furthermore, in order to facilitate oil discharge, a magnetic oil plug 80 for oil discharge can be arranged at the bottom of the lower box 12 . In order to observe the oil level conveniently, an oil mark 70 for observing the lubricating oil level in the gear case is also provided above the magnetic oil plug 80 .

In the present utility model, in order to support the first output shaft 31 and the second output shaft 32, the transmission device can be configured to further include a first output shaft case 140 and a second output shaft case 150, the first output shaft The box body 140 and the second output shaft box body 150 are arranged at both ends of the intermediate shaft 33 respectively, and both the first output shaft box body 140 and the second output shaft box body 150 can be fixedly connected to the box body 10 by the third bolt 230 superior.

Further, in the utility model, in order to realize the connection with the wheels on both sides, a first hub flange 200 connected to the wheel hub is provided at the end of the first output shaft 31, and a hub flange 200 is provided at the end of the second output shaft 32. There is a second hub flange 210 to which the wheel hub is attached. The first output shaft case 140 is provided with a first output shaft 31, the second output shaft case 150 is provided with a second output shaft 32, and the first output shaft 31 and the second output shaft 32 are in phase with the differential 34 respectively. connected so that the power of the intermediate shaft 33 can be transmitted to the wheels to drive the train forward.

In order to prevent oil from overflowing in the box body 10, a first oil seal 130 for sealing the lubricating oil inside the box body 10 can be set between the first output shaft 31 and the first output shaft box body 140, and between the second output shaft 32 and the second output shaft body 140. A second oil seal 160 for sealing lubricating oil inside the box 10 is arranged between the output shaft boxes 150 .

According to another aspect of the present utility model, a monorail train is provided, and the monorail train includes the transmission device as provided above. Since the transmission device of the utility model can effectively lubricate the internal parts of the gear box, the service life of the gear box is prolonged, and the working performance of the monorail train is greatly improved.

In summary, the utility model can realize high-position bearing lubrication by setting a suitable baffle groove on the upper box close to the input shaft, and setting an oil throwing ring with good oil stirring effect on the output shaft; by adopting the shaft intersection angle of The 90° small-sized bevel gear first-stage transmission achieves a 90° angle between the input shaft and the output shaft. The input shaft can be tilted according to the spatial structure and set at an angle with the horizontal plane, which greatly reduces the size of the installation space; A differential is installed inside the output shaft. When passing through a track with a small curve radius, the speed difference between the wheels on both sides can be realized, the travel difference between the two wheels can be compensated, and the wear of the wheels can be reduced. The shaft joint installation port is convenient for inspection and maintenance.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. A transmission device, characterized in that, comprising: Box (10); an input shaft assembly (20), arranged in the box (10); The output shaft assembly (30) is arranged in the box, the input shaft assembly (20) is drivingly connected with the output shaft assembly (30), the axis of the output shaft assembly (30) is arranged horizontally, and the input There is an included angle between the axis of the shaft assembly (20) and the horizontal plane; The lubricating unit (40) is arranged on the output shaft assembly (30), and the output shaft assembly (30) drives the lubricating unit (40) to lubricate the input shaft assembly (20). 2. The transmission device according to claim 1, characterized in that, the lubricating unit (40) comprises an oil throwing ring, and the oil throwing ring is sleeved on the output shaft assembly (30). 3. The transmission device according to claim 2, wherein the oil flinger comprises: Oil throwing body (41); The oil throwing blade (42), the oil throwing blade (42) is arranged on the said oil throwing body (41), and the oil liquid is thrown onto the input shaft assembly (20) through the oil throwing blade (42) . 4. The transmission device according to claim 2, characterized in that, the transmission device further comprises an oil deflector (50), and the oil deflector (50) is arranged in the box (10) and is connected to the The oil throwing ring is arranged correspondingly, and the oil deflector (50) can transmit the oil thrown off by the oil throwing ring to the input shaft assembly (20). 5. The transmission device according to claim 4, characterized in that, an oil retaining groove is arranged on the box body (10), and the oil retaining groove forms the oil retaining portion (50). 6. The transmission device according to claim 4, characterized in that, the input shaft assembly (20) comprises a first bearing unit (21) and an input shaft (22), and the input shaft (22) passes through the first A bearing unit (21) is rotatably arranged in the box body (10), and the oil flinger cooperates with the oil deflector (50) to lubricate the first bearing unit (21). 7. The transmission device according to claim 1, characterized in that, the transmission device further comprises a transmission unit (60), and the input shaft assembly (20) communicates with the output shaft assembly through the transmission unit (60) (30) DRIVE CONNECTION. 8. The transmission device according to claim 7, characterized in that, the transmission unit (60) comprises a bevel gear assembly, and the input shaft assembly (20) connects with the output shaft assembly (30) through the bevel gear assembly )connect. 9. The transmission device according to claim 1, characterized in that, the output shaft assembly (30) comprises a first output shaft (31), a second output shaft (32), an intermediate shaft (33) and a differential (34), the input shaft assembly (20) is drivingly connected to the intermediate shaft (33), the differential (34) is fixedly connected to the intermediate shaft (33), and the differential (34) The first output shaft (31) and the second output shaft (32) are respectively connected. 10. The transmission device according to claim 9, characterized in that, the lubricating unit (40) is arranged on the intermediate shaft (33). 11. The transmission device according to any one of claims 1 to 10, characterized in that, the box (10) comprises: an upper case (11), the input shaft assembly (20) is arranged in the upper case (11); The lower box (12) is detachably connected to the upper box (11), and the output shaft assembly (30) is arranged in the accommodation formed by the upper box (11) and the lower box (12). cavity. 12. A monorail train, comprising a transmission device, characterized in that the transmission device is the transmission device according to any one of claims 1 to 11.