Straddle-type monorail integrated drive system

Abstract

The utility model discloses a straddle type monorail integrated drive system, including motor, planetary reducer, the intermediate installation flange of connecting motor and planetary reducer, and the intermediate installation flan is set between motor and planetary reducer, be provided with motor shaft in the motor, and motor shaft hollow sets up, be provided with wheel shaft on motor shaft, and wheel shaft passes through motor shaft, and one end of wheel shaft is connected with planetary reducer, be provided with inner spline in motor shaft, be provided with outer spline on wheel shaft, and inner spline and outer spline engage. Motor and planetary reducer are connected through the intermediate installation flange, and the size of drive system is reduced, and hollow setting is added motor shaft, and one end of wheel shaft is connected with planetary reducer, and the spline engagement is set on motor shaft and wheel shaft, guarantee motor and planetary reducer's coaxial setting, guarantee maximum limit to reduce the deviation in power transmission process, ensure that power transmission path is more direct, stable.

Description

Technical Field

[0001] This utility model relates to vehicle drive systems, and more particularly to a straddle-type monorail integrated drive system. Background Technology

[0002] Straddle-type monorail vehicles run on a single track beam, typically made of reinforced concrete or steel. Straddle-type monorail transit is a relatively new rail transit system in China, characterized by low operating noise, strong climbing ability, and a small turning radius. The single-axle straddle-type monorail bogie is compact, lightweight, and low-cost. Because single-axle straddle-type monorail vehicles are low-floor vehicles, with the bogie enclosed within the wheel wells, high demands are placed on the structural dimensions of the drive system.

[0003] A smaller drive system size can lead to unreliable speed detection. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides a straddle-type monorail integrated drive system.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A straddle-type monorail integrated drive system includes a motor, a planetary reducer, and an intermediate mounting flange connecting the motor and the planetary reducer, wherein the intermediate mounting flange is disposed between the motor and the planetary reducer.

[0007] A motor shaft is provided inside the motor. The motor shaft is hollow. A wheel axle is provided on the motor shaft. The wheel axle passes through the motor shaft, and one end of the wheel axle is connected to the planetary reducer.

[0008] An internal spline is provided inside the motor shaft, and an external spline is provided on the wheel shaft, wherein the internal spline and the external spline mesh.

[0009] More specifically, a cooling water channel is provided on the motor, and an annular water channel is provided on the planetary reducer, with the cooling water channel and the annular water channel connected.

[0010] More specifically, a temperature and vibration sensor is installed on the planetary reducer.

[0011] More specifically, the motor includes a motor housing, a motor stator, and a motor rotor, with the motor stator connected to the motor housing and the motor rotor connected to the motor shaft.

[0012] More specifically, a rotary transformer is installed on the motor.

[0013] More specifically, the rotary transformer includes a rotary transformer stator and a rotary transformer rotor, the rotary transformer stator being connected to the motor housing, and the rotary transformer rotor being connected to the motor shaft.

[0014] More specifically, the planetary reducer includes a reducer housing, a planet carrier, and planetary gears. An internal gear is disposed on the reducer housing, and the planetary gears are disposed on the planet carriers, meshing with the internal gears.

[0015] More specifically, a sun gear is provided at the end of the axle, and the sun gear meshes with a planetary gear.

[0016] More specifically, a speed measuring gear is provided on the axle.

[0017] More specifically, a brake disc seat is provided at the end of the axle away from the sun gear, and the speed measuring gear is mounted on the brake disc seat.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] The motor and planetary reducer are connected via an intermediate mounting flange, reducing the size of the drive system. An additional motor shaft is added, and the motor shaft is hollowed out to facilitate the insertion of the wheel axle. One end of the wheel axle is connected to the planetary reducer. Splines are provided on both the motor shaft and the wheel axle to ensure coaxiality between the motor and the planetary reducer. This minimizes offset during power transmission, ensuring a more direct and smooth power transmission path and preventing damage to the motor from wheel axle vibrations. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 3 This is the utility model Figure 2 Sectional view of AA;

[0024] Figure 4 This is the utility model Figure 3 Enlarged view at point C;

[0025] Figure 5 This is a schematic diagram of the main structure of the motor shaft of this utility model;

[0026] Figure 6 This is the utility model Figure 5 BB section view;

[0027] Figure 7 This is a three-dimensional structural diagram of the temperature and vibration sensor of this utility model installed on the housing of the reducer;

[0028] Figure 8 This is a schematic diagram of the main structure of the planetary carrier of this utility model;

[0029] Figure 9 This is a three-dimensional structural diagram of the wheel axle of this utility model;

[0030] In the diagram: 1. Permanent magnet water-cooled motor; 11. Motor housing; 12. Motor stator; 13. Motor rotor; 14. Motor shaft; 141. Internal spline; 15. Brake disc mount; 16. Motor tail cover; 17. Speed ​​measuring gear; 18. Motor column bearing; 19. Motor ball bearing; 10. Cooling water channel;

[0031] 2. Planetary reducer; 21. Reducer column bearing; 22. Reducer housing; 221. Internal gear ring; 23. Planetary carrier; 24. Planetary gear; 25. Planetary gear bearing; 26. Reducer self-aligning bearing; 27. Reducer sealing ring; 28. Oil filling and oil level observation combination bolts;

[0032] 3. Intermediate flange installation; 31. Circular waterway;

[0033] 4. Wheel mounting flange;

[0034] 51. Rotary transformer stator; 52. Rotary transformer rotor;

[0035] 6. Wheel and axle; 61. External spline; 62. Sun gear; 63. Wheel and axle seal ring; 64. Input shaft self-aligning bearing;

[0036] 7. Temperature and vibration sensor. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] It should be understood that the accompanying drawings are for illustrative purposes only.

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0041] A straddle-type monorail integrated drive system, such as Figures 1-9 As shown, the system includes a motor, a planetary reducer 2, an intermediate mounting flange 3, and wheel mounting flanges 4. The motor is a permanent magnet water-cooled motor 1, which is connected to the planetary reducer 2 via the intermediate mounting flange 3. The permanent magnet water-cooled motor 1 and the planetary reducer 2 are respectively positioned on both sides of the intermediate mounting flange 3. This symmetrical mounting structure effectively ensures the force balance and operational stability of the entire drive system. Furthermore, the permanent magnet water-cooled motor 1 and the intermediate mounting flange 3, as well as the planetary reducer 2 and the intermediate mounting flange 3, are all fastened with bolts, forming a compact and reliable integrated drive unit. This ensures stable power transmission during straddle-type monorail operation, meeting the system's operational requirements.

[0042] The permanent magnet water-cooled motor 1 includes a motor housing 11, a motor rotor 13, a motor stator 12, a motor shaft 14, and a motor tail cover 16. The motor housing 11 serves to support and protect the motor, while the motor shaft 14 serves to transmit power.

[0043] The motor stator 12 is connected to the motor housing 11. The motor stator 12 is configured with an integral winding structure, which improves the operating efficiency and stability of the permanent magnet water-cooled motor 1. Furthermore, the motor stator 12 is fixedly mounted on the motor housing 11. The stable mounting structure ensures that no displacement occurs during motor operation, thereby guaranteeing the normal operation of the motor. The motor rotor 13 is connected to the motor shaft 14. Furthermore, the motor rotor 13 is connected to the motor shaft 14 via a key. The key connection effectively ensures the power transmission efficiency between the motor rotor 13 and the motor shaft 14, while also providing good centering effect to prevent deviation during rotation.

[0044] The motor shaft 14 is configured as a hollow shaft. By configuring the motor shaft 14 as a hollow shaft for inserting the wheel axle 6, the effective cooperation between the motor shaft 14 and the wheel axle 6 can be achieved, thereby transmitting the power generated by the motor to the wheel axle 6 and providing power support for the operation of the straddle-type monorail.

[0045] In the permanent magnet water-cooled motor 1, the two ends of the motor shaft 14 are connected to corresponding components through different bearings to ensure the stability and smoothness of the motor shaft 14 during rotation.

[0046] Furthermore, one end of the motor shaft 14 is mounted on the motor housing 11 via a motor column bearing 18. The motor column bearing 18 provides stable radial support for the motor shaft 14, ensuring that the motor shaft 14 does not experience excessive radial offset during rotation. The other end of the motor shaft 14 is mounted on the intermediate mounting flange 3 via a motor ball bearing 19. The motor ball bearing 19 also serves to support the motor shaft 14, and together with the motor column bearing 18, forms a two-end support structure for the motor shaft 14, jointly maintaining the smooth rotation of the motor shaft 14.

[0047] To prevent external impurities from entering the motor cavity or internal media from leaking, a sealing structure is specially provided between the motor column bearing 18 and the motor cavity. This sealing structure can effectively prevent direct contact between the motor cavity and the external environment, ensuring the normal working environment of the motor's internal components. At the same time, a sealing structure is also provided between the motor ball bearing 19 and the motor cavity. Through the double sealing design, the overall sealing performance of the motor is further improved, and the protection effect on the motor cavity is strengthened.

[0048] The motor column bearing 18 is kept in communication with the inner cavity of the planetary reducer 2, allowing the lubricating oil in the planetary reducer 2 to smoothly enter the motor column bearing 18, thereby lubricating the motor column bearing 18, reducing frictional loss during bearing rotation, and extending the bearing's service life. Similarly, the motor ball bearing 19 is also kept in communication with the inner cavity of the planetary reducer 2, and the lubricating oil in the planetary reducer 2 can also act on the motor ball bearing 19, achieving lubrication of the motor ball bearing 19, ensuring that the bearings at both ends of the motor shaft 14 can operate stably under good lubrication conditions, and providing a guarantee for the overall efficient operation of the motor.

[0049] Since the motor rotor 13 is connected to the motor shaft 14, the motor shaft 14 is set in a stepped shape to facilitate the installation of the motor rotor 13. At the same time, since bearings are provided at both ends of the motor shaft 14, the diameter of the two ends of the motor shaft 14 is smaller than the diameter of the middle part.

[0050] To achieve effective cooling of the motor and ensure that it maintains a suitable operating temperature during operation, cooling water channels 10 are provided on the motor housing 11. The cooling water channels 10 are arranged axially along the motor housing 11. This axial arrangement allows the cooling water to form a smooth flow path inside the motor housing 11, better covering the key areas of the motor housing 11 and thus improving cooling efficiency. To further ensure the cooling effect on the motor and to ensure that the cooling effect evenly covers the motor housing 11, several cooling water channels 10 are provided, and these channels are evenly distributed circumferentially along the motor housing 11. This circumferential distribution allows the cooling water to flow evenly in the circumferential direction of the motor housing 11, avoiding localized insufficient cooling and ensuring that all parts of the motor receive effective heat dissipation and temperature reduction.

[0051] An annular water channel 31 is provided on the intermediate mounting flange 3, which is used to connect and distribute cooling water. To prevent the cooling water in the annular water channel 31 from leaking during the flow process and to ensure the sealing and normal operation of the cooling system, a sealing structure is provided on the annular water channel 31. The sealing structure effectively blocks the cooling water from flowing out of the annular water channel 31, avoiding the impact on the cooling effect or damage to other components due to water leakage.

[0052] Furthermore, the annular water channel 31 is connected to the plurality of cooling water channels 10 on the motor housing 11. When the cooling water enters the annular water channel 31, it can be evenly distributed to each cooling water channel 10 and then flow in the cooling water channel 10. On the one hand, it dissipates heat and cools the motor housing 11 and internal components of the permanent magnet water-cooled motor 1. On the other hand, the cooling water can also dissipate heat for the planetary reducer 2, thereby achieving synchronous cooling of the permanent magnet water-cooled motor 1 and the planetary reducer 2, ensuring that the entire drive system operates stably in a suitable temperature environment.

[0053] The motor housing 11 is connected to the intermediate mounting flange 3 by bolts.

[0054] To achieve accurate monitoring of the motor's operating status, a rotary transformer is installed on the permanent magnet water-cooled motor 1. The rotary transformer is used for measuring the motor speed to ensure stable and accurate motor operation.

[0055] The rotary transformer includes a stator 51 and a rotor 52, which together complete the acquisition and transmission of speed signals. The stator 51 is fixedly connected to the motor housing 11, ensuring that the stator 51 remains stationary during motor operation, thus guaranteeing the accuracy of speed measurement. The rotor 52 is connected to the motor shaft 14 via a key, ensuring synchronous rotation between the rotor 52 and the motor shaft 14. This allows the rotor 52 to follow the rotation of the motor shaft 14 in real time, accurately capturing changes in the motor shaft 14's speed and facilitating precise detection of the motor speed.

[0056] A rotary transformer is installed on the motor to accurately measure the motor speed through the principle of electromagnetic induction. When the motor shaft 14 drives the rotary transformer rotor 52 to rotate, the electromagnetic induction state between the rotary transformer stator 51 and the rotor changes with the rotational speed. By utilizing this law of electromagnetic induction, the rotary transformer can convert the mechanical rotational speed of the motor shaft 14 into a corresponding electrical signal, thereby realizing real-time and accurate monitoring of the motor speed and providing reliable speed data support for motor speed control and operation protection.

[0057] The planetary reducer 2 is made by forging, forming an integral forged structure, which can effectively improve the overall strength and structural stability of the planetary reducer 2, better withstand the load generated during operation, and ensure the long-term stable operation of the reducer.

[0058] The planetary reducer 2 is connected to the intermediate mounting flange 3 by bolts, which ensures the firmness of the connection between the planetary reducer 2 and the intermediate mounting flange 3 and prevents loosening during operation.

[0059] The planetary reducer 2 includes a reducer housing 22, a planet carrier 23, and planetary gears 24. The reducer housing 22 provides protection and support, and an internal gear ring 221 is provided on the reducer housing 22. The internal gear ring 221 meshes with the planetary gears 24 for power transmission.

[0060] One end of the planetary carrier 23 is connected to the intermediate mounting flange 3 via a reducer column bearing 21. The reducer column bearing 21 provides stable radial support to this end of the planetary carrier 23, ensuring that the planetary carrier 23 is not prone to radial displacement during rotation. The other end of the planetary carrier 23 is connected to the reducer housing 22 via a reducer self-aligning bearing 26. The reducer self-aligning bearing 26 not only provides support but also compensates for installation errors or slight misalignments during operation to a certain extent, ensuring the smooth rotation of the planetary carrier 23. To prevent leakage of internal lubricating oil or intrusion of external impurities into the planetary reducer 2, reducer sealing rings 27 are provided at both ends of the planetary carrier 23. Through the sealing effect of the reducer sealing rings 27, the sealing performance of the planetary reducer 2 is effectively improved, maintaining a good internal working environment.

[0061] Planetary gears 24 are mounted on the planet carrier 23. In this design, three planetary gears 24 are mounted on the planet carrier 23, forming a uniformly distributed planetary transmission structure. This allows the load to be evenly distributed across each planetary gear 24, reducing the stress on individual gears and extending their service life. To reduce frictional losses during the rotation of the planetary gears 24, planetary gear bearings 25 are also provided. The planetary gears 24 are mounted on the planetary gear bearings 25, which in turn mount them onto the planet carrier 23. The planetary gear bearings 25 not only improve the rotational flexibility of the planetary gears 24 but also provide some protection, further ensuring the stable operation of the transmission system.

[0062] To monitor the operating status of the planetary reducer 2 in real time and ensure operational safety, a temperature and vibration sensor 7 is installed on the housing of the planetary reducer 2. This sensor detects the temperature and vibration parameters of the planetary reducer 2 during operation, allowing for timely assessment of any abnormal operating conditions. The probe of the temperature and vibration sensor 7 is inserted inside the reducer housing 22, reaching directly to the outer ring of the self-aligning bearing 26. This deep-mounted design allows for direct acquisition of temperature and vibration data from the self-aligning bearing 26, enabling precise detection of its operating status. If issues such as excessively high bearing temperature or abnormal vibration are detected, a timely warning can be issued, allowing personnel to take maintenance measures, effectively preventing the fault from escalating, and significantly improving the safety and reliability of the planetary reducer 2 and the entire drive system.

[0063] To enable power transmission to the wheels, a wheel mounting flange 4 is installed on the output shaft of the planetary carrier 23. The wheel mounting flange 4 is a connecting component between the planetary reducer 2 and the wheel, used to smoothly transmit the power output by the planetary carrier 23 to the wheel.

[0064] The wheel mounting flange 4 is positioned close to the planetary reducer 2, which can shorten the power transmission path, reduce power loss during transmission, optimize the spatial structure of the entire drive system, make the layout of each component more compact and reasonable, avoid structural looseness caused by excessive spacing between components, and further improve the overall stability of the system.

[0065] The wheel mounting flange 4 is interference-fitted with the output shaft of the planetary carrier 23. This interference fit ensures a tight fit between the wheel mounting flange 4 and the output shaft of the planetary carrier 23, forming a robust connection that effectively prevents relative slippage during power transmission, thus ensuring the stability and reliability of power transmission. Simultaneously, to further enhance the connection and prevent loosening during long-term operation, a bolted connection is provided. The tightening action of the bolts provides double protection for the connection, ensuring that the wheel mounting flange 4 and the output shaft of the planetary carrier 23 always maintain a stable connection.

[0066] The wheel mounting flange 4 is also equipped with a combination bolt 28 for oil filling and oil level observation. On the one hand, it serves as an oil filling channel, making it convenient for staff to inject lubricating oil into the planetary reducer 2, providing continuous lubrication support for the gears, bearings and other moving parts inside the reducer, reducing frictional loss between parts and extending service life. On the other hand, it can also be used to check the oil level inside the reducer. Staff can quickly determine whether the lubricating oil level inside the planetary reducer 2 is within the normal range by observation, and replenish the lubricating oil in time to avoid increased wear of parts due to insufficient lubrication, and ensure that the planetary reducer 2 always operates stably under good lubrication conditions.

[0067] To achieve efficient power transmission from the motor to the planetary reducer 2, a wheel axle 6 is installed inside the motor shaft 14. The wheel axle 6 passes through the motor and extends to connect with the planetary reducer 2, ensuring that the motor and the planetary reducer 2 are coaxially aligned. This coaxial layout minimizes offset during power transmission, ensuring a more direct and smooth power transmission path, avoiding power loss or component wear caused by misalignment, and laying the foundation for the stable operation of the entire drive system.

[0068] An internal spline 141 is provided inside the motor shaft 14, and an external spline 61 is provided on the wheel shaft 6. The internal spline 141 and the external spline 61 mesh, which can effectively prevent relative slippage during power transmission and ensure that the driving force generated by the motor shaft 14 can be stably and efficiently transmitted to the wheel shaft 6 during rotation, so that the wheel shaft 6 can obtain rotational power synchronized with the motor shaft 14.

[0069] A sun gear 62 is provided at one end of the axle 6 facing the planetary reducer 2. The sun gear 62 forms a stable meshing relationship with the planetary gear 24 inside the planetary reducer 2. When the axle 6 rotates under the drive of the motor shaft 14, through the meshing of the sun gear 62 and the planetary gear 24, the axle 6 can further transmit the received driving force to the planetary reducer 2, thereby driving the planetary reducer 2 to rotate as a whole, providing the initial driving force for the subsequent reduction transmission and power output of the planetary reducer 2.

[0070] Because the sun gear 62 is a floating fit, there is a certain amount of runout and displacement. Therefore, the other end of the wheel shaft 6 needs to have the ability to compensate for displacement. Thus, a spline fit is set on the wheel shaft 6 and the motor shaft 14 to compensate for the runout error, so as to avoid the runout impact being directly transmitted to the motor shaft and causing great damage to the motor.

[0071] At the other end of the axle 6, away from the planetary reducer 2, an input shaft self-aligning bearing 64 is provided, which connects the axle 6 to the motor tail cover 16. The input shaft self-aligning bearing 64 has excellent self-aligning performance, which can compensate for minor coaxiality errors that may occur during the installation of the axle 6, ensuring that the axle 6 remains stable during rotation and preventing abnormal operation due to installation deviations. Simultaneously, a wheel axle seal ring 63 is specially provided on the outer side of the input shaft self-aligning bearing 64. This wheel axle seal ring 63 effectively prevents external impurities from entering the bearing and prevents leakage of lubricating grease, ensuring normal lubrication and service life of the input shaft self-aligning bearing 64.

[0072] A brake disc mount 15 is also installed on the outside of the wheel axle seal ring 63. The brake disc mount 15 serves as the mounting base for subsequent braking components, providing stable support for the assembly of the braking system. A speed measuring gear 17 is installed on the brake disc mount 15. The speed measuring gear 17 is used to collect speed signals. By capturing the rotational speed of the wheel axle 6 in real time, the speed signal is transmitted to the system control unit, providing accurate speed data support for the speed regulation, operation monitoring, and safety protection of the drive system.

[0073] The working principle of a straddle-type monorail integrated drive system is as follows:

[0074] Through the principle of electromagnetic induction, electromagnetic torque is generated inside the motor. The electromagnetic torque directly drives the motor rotor 13 to rotate. The motor shaft 14 connected to the motor rotor 13 also rotates synchronously. The wheel axle 6 also rotates synchronously. Then, the power is transmitted from the wheel axle 6 to the planetary reducer 2. When the wheel axle 6 rotates, the driving force is transmitted to the planetary gear 24 through meshing, which drives the planetary gear 24 to rotate. The planetary gear 24 meshes with the internal gear ring 221 fixed on the outer shell of the planetary reducer 2. While the planetary gear 24 rotates, it is constrained by the internal gear ring 221 and also performs circular motion around the axis of the wheel axle 6. The revolution of planetary gear 24 directly drives the planetary carrier 23 connected to it to rotate synchronously. During this process, the planetary reducer 2, through the rotation and revolution of planetary gear 24, achieves power reduction and transmission ratio adjustment. Its transmission ratio is precisely controlled between 6.7 and 7.5, meeting the speed and torque adaptation requirements of straddle-type monorail operation, converting the high-speed, low-torque power input from wheel axle 6 into low-speed, high-torque power suitable for subsequent output. The power generated by the rotation of planetary carrier 23 is directly transmitted to the wheel mounting flange 4 connected to it. Through the cooperation between wheel mounting flange 4 and wheel, the power is transmitted to the wheel, ultimately realizing the power output of the entire drive system and providing sufficient driving force for the straddle-type monorail to travel.

[0075] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

[0076] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0078] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A straddle-type monorail integrated drive system, characterized by: It includes a motor, a planetary reducer (2) and an intermediate mounting flange (3) connecting the motor and the planetary reducer (2), the intermediate mounting flange (3) being disposed between the motor and the planetary reducer (2); A motor shaft (14) is provided inside the motor. The motor shaft (14) is hollow. A wheel axle (6) is provided on the motor shaft (14). The wheel axle (6) passes through the motor shaft (14), and one end of the wheel axle (6) is connected to the planetary reducer (2). An internal spline (141) is provided inside the motor shaft (14), and an external spline (61) is provided on the wheel shaft (6). The internal spline (141) meshes with the external spline (61).

2. The straddle-type monorail integrated drive system according to claim 1, characterized in that: A cooling water channel (10) is provided on the motor, and an annular water channel (31) is provided on the planetary reducer (2). The cooling water channel (10) and the annular water channel (31) are connected.

3. The straddle-type monorail integrated drive system according to claim 1, characterized in that: A temperature and vibration sensor (7) is installed on the planetary reducer (2).

4. The straddle-type monorail integrated drive system according to claim 1, characterized in that: The motor includes a motor housing (11), a motor stator (12) and a motor rotor (13). The motor stator (12) is connected to the motor housing (11), and the motor rotor (13) is connected to the motor shaft (14).

5. The straddle-type monorail integrated drive system according to claim 4, characterized in that: A rotary transformer is installed on the motor.

6. The straddle-type monorail integrated drive system according to claim 5, characterized in that: The rotary transformer includes a rotary transformer stator (51) and a rotary transformer rotor (52). The rotary transformer stator (51) is connected to the motor housing (11), and the rotary transformer rotor (52) is connected to the motor shaft (14).

7. The straddle-type monorail integrated drive system according to claim 1, characterized in that: The planetary reducer (2) includes a reducer housing (22), a planet carrier (23), and a planetary gear (24). An internal gear ring (221) is provided on the reducer housing (22), and the planetary gear (24) is provided on the planet carrier (23). The planetary gear (24) meshes with the internal gear ring (221).

8. The straddle-type monorail integrated drive system according to claim 7, characterized in that: A sun gear (62) is provided at the end of the axle (6), and the sun gear (62) meshes with the planetary gear (24).

9. The straddle-type monorail integrated drive system according to claim 1, characterized in that: A speed measuring gear (17) is provided on the axle (6).

10. The straddle-type monorail integrated drive system according to claim 9, characterized in that: A brake disc seat (15) is provided at the end of the axle (6) away from the sun gear (62), and the speed measuring gear (17) is provided on the brake disc seat (15).

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