Sled car motor with reduction gear

Abstract

The utility model relates to a sleigh car motor with a reduction gear, which comprises a supporting shaft, a hub assembly, a stator and rotor assembly arranged in the hub assembly, and a planetary reduction assembly, the hub assembly comprises a hub and a cover plate, a sleigh belt pulley is integrally formed on the outer diameter surface of the hub, and the hub assembly is provided with a speed reduction gear. The stator and rotor assembly comprises a stator iron core and a rotor which are coaxially arranged, the rotor is provided with a rotor connecting part, the planetary speed reduction assembly comprises a sun gear, a gear ring, a planetary carrier, a plurality of planetary gear shafts and a plurality of planetary gears, and the sun gear is provided with a sun gear part and a sun gear disc. The sun gear is arranged on the supporting shaft in a sleeving mode and fixedly connected with the rotor connecting part through the sun gear disc, the planet gears are arranged on the corresponding planet gear shafts in a sleeving mode through bearings and meshed with the sun gear, and the gear ring is arranged outside the planet gears in a sleeving mode and meshed with the planet gears. The device has the advantages of high reliability, long service life, low noise, compact structure and high transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hub motor technology, and in particular to a sled motor with a reduction gear. Background Technology

[0002] A sled is a vehicle used for driving or recreation on snow. Its main applications are in tourist attractions, winter sports, and pastoral transportation. The motors used in the sled wheels usually have high requirements for their capacity and transmission efficiency.

[0003] Currently, the following problems exist with sled motors on the market: low transmission efficiency, high failure rate, and high noise. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a sled motor with a reduction gear that features high reliability, long lifespan, low noise, compact structure, and high transmission efficiency.

[0005] This utility model is achieved through the following technical solution: a sled motor with a reduction gear, including a support shaft, a hub assembly, and a stator and rotor assembly disposed within the hub assembly. The hub assembly includes a hub and a cover plate. One side of the hub is sleeved on the support shaft via a bearing, and the cover plate is sleeved on the support shaft via a bearing and pressed tightly to the other side of the hub.

[0006] To ensure the airtightness of the entire wheel hub assembly and prevent dust, mud, and water from entering the wheel hub assembly, oil seals are provided between the outer side of the wheel hub and the support shaft, and between the outer side of the cover plate and the support shaft.

[0007] Furthermore, the stator-rotor assembly includes a stator core and a rotor arranged coaxially, the rotor having a rotor connection portion, which is sleeved on the support shaft by two bearings of different specifications.

[0008] The sled motor with reduction gears also includes a planetary reduction assembly, which increases the motor's capacity by reducing speed and increasing torque. The planetary reduction assembly is located within the hub assembly and includes a sun gear, a ring gear, a planetary gear carrier, several planetary gear shafts, and several planetary gears. The sun gear has a sun gear section and a sun disk. The sun gear is sleeved on the support shaft and fixedly connected to the rotor connection section through the sun disk. The planetary gear carrier is sleeved and connected to one end of the support shaft. The planetary gear shafts are evenly arranged circumferentially within the planetary gear carrier. The planetary gears are sleeved on the corresponding planetary gear shafts through bearings and mesh with the sun gear. The ring gear is sleeved outside the planetary gears and meshes with them.

[0009] To improve transmission efficiency and structural compactness, a sled pulley is integrally formed on the outer diameter surface of the hub, and the sled belt can be directly mounted on the sled pulley.

[0010] To further improve structural compactness, the stator core has a recessed clearance cavity on the side near the rotor, and the rotor connection part is located in the clearance cavity.

[0011] To reduce motor noise, the sun gear, ring gear, and planet gears are all helical gears.

[0012] The beneficial effects of this utility model are as follows: the sled motor with reduction gear increases torque and improves efficiency while reducing noise by designing a planetary reduction mechanism composed entirely of helical gears inside the motor; the sled pulley is directly integrally formed on the outer diameter surface of the hub, simplifying the structure, improving transmission efficiency, and enhancing structural compactness; the arrangement and connection relationship of parts such as the sun gear and rotor are optimized, improving the structural connection reliability and compactness of the sled motor; in addition, the speed of the sled motor with reduction gear can be adjusted according to working requirements. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the sled motor with reduction gear according to the present invention;

[0014] Figure 2 This is a cross-sectional view of the sled motor with reduction gear of this utility model;

[0015] In the diagram: 1. Support shaft; 2. Hub assembly; 21. Hub; 211. Sled pulley; 22. Cover plate; 3. Stator and rotor assembly; 31. Stator core; 311. Clearance cavity; 32. Rotor; 321. Rotor connection; 4. Planetary reduction assembly; 41. Sun gear; 411. Sun gear section; 412. Sun disk; 42. Gear ring; 43. Planetary gear carrier; 44. Planetary gear shaft; 45. Planetary gear; 5. Oil seal. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0017] like Figure 1-2The illustrated sled motor with a reduction gear includes a support shaft 1, a hub assembly 2, a stator and rotor assembly 3 disposed within the hub assembly 2, and a planetary reduction assembly 4. The hub assembly 2 includes a hub 21 and a cover plate 22. One side of the hub 21 is sleeved on the support shaft 1 via a bearing, and the cover plate is sleeved on the support shaft 1 via a bearing and pressed tightly to the other side of the hub 21. A sled pulley 211 is integrally formed on the outer diameter surface of the hub 21. Oil seals 5 are provided between the outer side of the hub 21 and the support shaft 1, and between the outer side of the cover plate 22 and the support shaft 1.

[0018] The stator and rotor assembly 3 includes a stator core 31 and a rotor 32 arranged coaxially. The rotor 32 has a rotor connection part 321. The rotor connection part 321 is sleeved on the support shaft 1 through two bearings of different specifications. The stator core 31 has a recessed clearance cavity 311 on the side close to the rotor 32. The rotor connection part 321 is located in the clearance cavity 311.

[0019] The planetary reduction assembly 4 includes a sun gear 41, a ring gear 42, a planetary gear carrier 43, a plurality of planetary gear shafts 44, and a plurality of planetary gears 45. The sun gear 41 has a sun gear portion 411 and a sun disk 412. The sun gear 41 is sleeved on the support shaft 1 and fixedly connected to the rotor connection portion 321 through the sun disk 412. The planetary gear carrier 43 is sleeved and connected to one end of the support shaft 1. The planetary gear shafts 44 are evenly arranged circumferentially within the planetary gear carrier 43. The planetary gears 45 are sleeved on the corresponding planetary gear shafts 44 through bearings and mesh with the sun gear 41. The ring gear 42 is sleeved on the outside of the planetary gears 45 and meshes with the planetary gears 45.

[0020] The bobsleigh motor with reduction gear is an important component of the bobsleigh's power transmission system. During installation, the entire bobsleigh motor is simply mounted on the corresponding positions on the bobsleigh via the two ends of the support shaft 1, and the bobsleigh belt is fitted onto the bobsleigh pulley 211. During operation, the stator and rotor assembly 3, as the motor part, provides driving force for the bobsleigh's movement. The planetary reduction assembly 4 reduces speed and increases torque to ensure stable bobsleigh operation. The planetary gears 45, sun gear 41, and ring gear 42 within the planetary reduction assembly 4 are all helical gears, resulting in high transmission smoothness and low noise, ensuring smooth bobsleigh operation.

[0021] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A sled motor with a reduction gear, characterized in that: The system includes a support shaft, a hub assembly, a stator and rotor assembly disposed within the hub assembly, and a planetary reduction assembly. The hub assembly includes a hub and a cover plate. One side of the hub is mounted on the support shaft via a bearing. The cover plate is mounted on the support shaft via a bearing and pressed against the other side of the hub. A sled pulley is integrally formed on the outer diameter surface of the hub. The stator and rotor assembly includes a stator core and a rotor coaxially arranged. The rotor has a rotor connection portion, which is mounted on the support shaft via two bearings of different specifications. The planetary reduction assembly includes a sun gear, a ring gear, a planetary gear carrier, several planetary gear shafts, and several planetary gears. The sun gear has a sun gear portion and a sun disk. The sun gear is mounted on the support shaft and fixedly connected to the rotor connection portion via the sun disk. The planetary gear carrier is mounted on one end of the support shaft. The planetary gear shafts are evenly arranged circumferentially within the planetary gear carrier. The planetary gears are mounted on the corresponding planetary gear shafts via bearings and mesh with the sun gear. The ring gear is mounted outside the planetary gears and meshes with them.

2. The sled motor with reduction gear according to claim 1, characterized in that: Oil seals are provided between the outer side of the wheel hub and the support shaft, and between the outer side of the cover plate and the support shaft.

3. The sled motor with reduction gear according to claim 1, characterized in that: The stator core has a recessed clearance cavity on the side near the rotor, and the rotor connection part is located in the clearance cavity.

4. The sled motor with reduction gear according to claim 1, characterized in that: The sun gear, ring gear, and planet gears are all helical gears.

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