A concealed semi-direct drive motor

Abstract

The utility model discloses a kind of hidden half direct drive motor, it is related to motor field, including shell, second stop is equipped on its inner wall, the inner cavity of shell is divided into front installation cavity and rear installation cavity;Planetary reducer, into the front installation cavity, this planetary reducer includes planet carrier, planet carrier center assembly sun gear assembly, assemble several planetary gear assemblies around sun gear assembly, planet carrier outer periphery is equipped with inner ring gear, inner ring gear is engaged with each planetary gear assembly;And stator and rotor, all into the rear installation cavity, the rotating shaft of rotor center extends into front installation cavity and is connected transmission with sun gear assembly;The output shaft is set in the front end of planet carrier, output shaft extends from the front end of shell, and power is outputted outwardly.The utility model solves the problem of complex installation and low space utilization rate;Reduce elastic deformation, improve system rigidity and response speed;Motor rotor and the coaxiality of reducer input shaft are more optimal, reduce vibration and noise, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of motors, specifically to a concealed semi-direct drive motor. Background Technology

[0002] In existing technologies, motors are typically paired with gearboxes, pulleys, and reducers to achieve speed reduction and torque increase. However, this approach has the following drawbacks:

[0003] 1. The installation is relatively complicated and the space utilization is low. For example, the motor and reducer combination solution requires the reducer and motor to be installed. The reducer and motor occupy a lot of space and have a low degree of integration.

[0004] 2. Connection methods such as couplings and pulleys increase elastic deformation, affecting rigidity and response speed;

[0005] 3. The pulley is prone to wear and tear during operation, which affects transmission efficiency and generates a lot of noise, resulting in a poor user experience. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a concealed semi-direct drive motor that solves the problems of complex installation and low space utilization; reduces elastic deformation, improves system rigidity and response speed; and improves the coaxiality of the motor rotor and the reducer input shaft, reducing vibration and noise and extending service life.

[0007] The purpose of this utility model is achieved through the following technical solution: This concealed semi-direct drive motor includes:

[0008] The housing has a second stop on its inner wall, which divides the inner cavity of the housing into a front mounting cavity and a rear mounting cavity.

[0009] A planetary gear reducer, inserted into a front mounting cavity, includes a planet carrier, a sun gear assembly mounted at the center of the planet carrier, several planet gear assemblies mounted around the sun gear assembly, and an internal gear ring fitted around the outer periphery of the planet carrier, which meshes with each planet gear assembly; and

[0010] Both the stator and rotor are placed in the rear mounting cavity, and the rotor's central shaft extends into the front mounting cavity and connects to the sun gear assembly for transmission.

[0011] The planetary carrier has an output shaft at its front end, which extends from the front of the housing and outputs power outward.

[0012] As a further technical solution, the internal gear ring includes a toothed portion that meshes with the planetary gear assembly. The outer edge of the toothed portion extends toward the front end of the housing to form an extension portion. Several internal keyways are evenly opened along the circumferential direction of the end face of the extension portion. Several external keyways are evenly opened along the circumferential direction at the mating point between the end face of the housing and the extension portion. The internal keyways and external keyways correspond one-to-one, and a flat key is inserted to realize torque transmission.

[0013] As a further technical solution, a first stop is provided on the inner wall of the housing corresponding to the front mounting cavity for positioning and installing the internal gear ring, so that the extension is flush with the end face of the housing. The front end of the housing can be detachably installed with a front cover for pressing the flat key, and the rear end of the housing can be detachably installed with a rear end cover.

[0014] As a further technical solution, a front bearing is fitted at the front end of the planetary carrier and supported on the front end cover; a rear bearing is fitted at the rear end of the planetary carrier and supported on a bearing housing, which is positioned on the second stop.

[0015] As a further technical solution, several fixing holes are opened on the end face of the housing for installing locking screws, thereby locking the housing and the front cover together; the fixing holes are evenly distributed along the end face of the housing and are staggered with the external keyway.

[0016] As a further technical solution, a front cooling channel communicating with the front mounting cavity and a rear cooling channel communicating with the rear mounting cavity are reserved on the casing.

[0017] As a further technical solution, feet are installed at the bottom of the casing.

[0018] As a further technical solution, the shaft and the sun gear assembly are connected by a spline for transmission to ensure coaxiality.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The housing is equipped with front and rear mounting cavities respectively, and the reducer is installed in the housing (front mounting cavity) in a hidden manner, which reduces the space occupation, improves the space utilization of the housing, and is conducive to the miniaturization of the motor;

[0021] 2. It no longer relies on pulleys and couplings for transmission, thus avoiding increased elastic deformation and improving system rigidity and response speed;

[0022] 3. Both the front and rear mounting cavities are equipped with corresponding front and rear cooling channels, so that the cooling channels cover the position of the reducer, in preparation for the cooling of the reducer;

[0023] 4. The internal gear ring of the planetary reducer is extended and the torque is transmitted to the housing via a flat key. After the torque is transmitted to the housing, it is fixed to the ground by the housing feet to ensure the normal operation of the equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of this utility model (with the front end cover hidden).

[0026] Figure 3 This is a schematic diagram of the casing structure in this utility model.

[0027] Figure 4 This is a top view of the casing structure of this utility model.

[0028] Figure 5 for Figure 4 AA sectional view.

[0029] Figure 6 This is a top view of the structure of this utility model.

[0030] Figure 7 for Figure 6 BB cross-sectional view.

[0031] Figure 8 This is a schematic diagram of the internal gear ring in this utility model.

[0032] Figure 9 This is a schematic diagram of the planetary carrier in this utility model.

[0033] Figure 10 This is a schematic diagram of the planetary carrier after assembly in this utility model. Figure 1 .

[0034] Figure 11 This is a schematic diagram of the planetary carrier after assembly in this utility model. Figure 2 .

[0035] Figure 12 This is a schematic diagram of the structure of the planetary carrier and the internal gear ring after assembly in this utility model.

[0036] Explanation of reference numerals in the attached drawings: 1. Housing; 11. First stop; 12. External keyway; 13. Fixing hole; 14. Second stop; 15. Foot; 16. Front mounting cavity; 17. Rear mounting cavity; 18. Front cooling channel; 19. Rear cooling channel; 2. Planetary reducer; 21. Internal gear ring; 211. Extension; 212. Internal keyway; 213. Gear; 22. Planet carrier; 221. Planetary gear assembly; 222. Sun gear assembly; 223. Output shaft; 23. Upper bearing; 24. Lower bearing; 3. Front end cover; 4. Flat key; 5. Locking screw; 6. Bearing seat; 7. Stator; 8. Rotor; 81. Rotating shaft; 9. Rear end cover. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings:

[0038] Example: As attached Figures 1-12 As shown, this concealed semi-direct drive motor includes a housing 1, a first stop 11, an external keyway 12, a fixing hole 13, a second stop 14, a foot 15, a front mounting cavity 16, a rear mounting cavity 17, a front cooling channel 18, a rear cooling channel 19, a planetary reducer 2, an internal gear ring 21, an extension 211, an internal keyway 212, a gear 213, a planet carrier 22, a planetary gear assembly 221, a sun gear assembly 222, an output shaft 223, an upper bearing 23, a lower bearing 24, a front end cover 3, a flat key 4, a locking screw 5, a bearing housing 6, a stator 7, a rotor 8, a rotating shaft 81, and a rear end cover 9.

[0039] Reference Appendix Figure 3 , 5 A second stop 14 is provided on the inner wall of the housing 1, which divides the inner cavity of the housing 1 into a front mounting cavity 16 and a rear mounting cavity 17, as shown below. Figure 5 As shown, the front mounting cavity 16 and the rear mounting cavity 17 are not completely isolated, but are connected through a hole in the center of the second stop 14.

[0040] like Figure 7 As shown, the planetary reducer 2 is placed into the front mounting cavity 16. The planetary reducer 2 includes a planet carrier 22. (Refer to the attached diagram.) Figure 9 , 10 11, 12, A sun gear assembly 222 is assembled at the center of the planet carrier 22, and three planet gear assemblies 221 (three in this embodiment, but other numbers are also possible) are assembled around the sun gear assembly 222. An internal gear ring 21 is fitted around the outer periphery of the planet carrier 22, and the internal gear ring 21 meshes with each planet gear assembly 221, such as... Figure 12 As shown. Furthermore, an output shaft 223 is integrally provided at the front end of the planetary carrier 22. The output shaft 223 extends from the front end of the housing 1 (front end cover 3) and outputs power outward.

[0041] Reference Appendix Figure 8 The internal gear ring 21 includes a toothed portion 213 that meshes with the planetary gear assembly 221. The outer edge of the toothed portion 213 extends toward the front end of the housing 1 to form an extension portion 211. A plurality of internal keyways 212 are evenly formed along the circumferential direction of the end face of the extension portion 211. Meanwhile, as... Figure 2 , 3 As shown, several external keyways 12 are evenly opened along the circumferential direction at the mating point between the end face of the housing 1 and the extension 211. The internal keyways 212 correspond one-to-one with the external keyways 12. A flat key 4 is placed between each internal keyway 212 and the external keyway 12 to realize torque transmission.

[0042] Preferably, such as Figure 3 , 5As shown, a first stop 11 is provided on the inner wall of the housing 1 corresponding to the front mounting cavity 16. The first stop 11 is used to position and install the internal gear ring 21, and to make the extension 211 of the internal gear ring 21 flush with the end face of the housing 1. Furthermore, a plurality of fixing holes 13 are opened on the end face of the housing 1 (preferably, the fixing holes 13 are evenly distributed along the end face of the housing 1 and are staggered with the external keyway 12). The fixing holes 13 are used to install locking screws, thereby locking (removably fixing) the housing 1 and the front cover 3. The front cover 3 is used to press the flat key 4 to prevent it from vibrating and coming off during operation. The rear end cover 9 can be detachably installed at the rear end of the housing 1. Preferably, as shown Figure 3 As shown, a foot 15 is provided at the bottom of the housing 1. When the torque force is transmitted to the housing 1, it is fixed to the ground by the foot 15 to ensure the normal operation of the equipment.

[0043] like Figure 7 As shown, both the stator 7 and the rotor 8 are placed in the rear mounting cavity 17. The rotating shaft 81 at the center of the rotor 8 extends into the front mounting cavity 16 and is connected to the sun gear assembly 222 for transmission. The rotating shaft 81 and the sun gear assembly 222 are connected by a spline to ensure coaxiality. The central shaft of the sun gear assembly 222 (i.e., the input shaft of the planetary reducer) is coaxial with the rotating shaft 81 and the output shaft 223, reducing vibration and noise and extending service life.

[0044] like Figure 7 , 10 As shown, a front bearing 23 is fitted at the front end of the planetary carrier 22 and supported on the front end cover 3. A rear bearing 24 is fitted at the rear end of the planetary carrier 22 and supported on the bearing seat 6. The bearing seat 6 is positioned on the second stop 14.

[0045] Reference Appendix Figure 5 , 7 Furthermore, a front cooling channel 18 and a rear cooling channel 19 are pre-reserved on the housing 1, wherein the front cooling channel 18 communicates with the front mounting cavity 16, and the rear cooling channel 19 communicates with the rear mounting cavity 17. The motor cooling channels are designed to cover the location of the reducer to prepare for reducer cooling. Preferably, an external cooling system or a cooling fan can be installed in the pre-reserved cooling channels.

[0046] The working process of this utility model:

[0047] During assembly, the motor assembly (stator 7, rotor 8) is placed into the rear mounting cavity 17, and the planetary reducer 2 is assembled and placed into the front mounting cavity 16. The rotating shaft 81 is connected to the sun gear assembly 222 via a spline for transmission. The sun gear assembly 222 is connected to the planet gear assembly 221 via a spline for transmission. At the same time, each planet gear assembly 221 meshes with the teeth 213 of the internal gear ring 21. The end face of the housing 1 and the extension 211 of the internal gear ring 21 are connected via a flat key 4 to achieve torque transmission. After the torque force is transmitted to the housing 1, it is fixed to the ground by the feet 15 to ensure normal operation of the equipment. When powered on, the rotating shaft 81 rotates synchronously with the rotor 8. The rotating shaft 81 drives the sun gear assembly 222 to rotate, and the sun gear assembly 222 drives each planet gear assembly 221 to rotate around the internal gear ring 21. At the same time, the planet carrier 22 also rotates, so that the output shaft 223, which is integrally mounted on the planet carrier 22, rotates coaxially with the rotating shaft 81, ensuring coaxiality.

[0048] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A concealed semi-direct drive motor, characterized in that, The utility model relates to a kind of planetary gear reducer, comprising: Casing (1), second stop (14) is provided on its inner wall, and the cavity of casing (1) is divided into front installation cavity (16) and rear installation cavity (17); Planetary reducer (2) is placed into front installation cavity (16), and the planetary reducer (2) includes planet carrier (22), sun wheel assembly (222) is assembled in the center of planet carrier (22), a plurality of planetary gear assemblies (221) are assembled around sun wheel assembly (222), and inner ring gear (21) is sleeved on the outer periphery of planet carrier (22), and inner ring gear (21) is engaged with each planetary gear assembly (221); And Stator (7) and rotor (8) are placed into rear installation cavity (17), and the rotating shaft (81) of the center of rotor (8) extends into front installation cavity (16) and is connected with sun wheel assembly (222) transmission. The output shaft (223) of the front end of the planet carrier (22) extends from the front end of the casing (1) and outputs power outward.

2. The concealed semi-direct drive motor according to claim 1, characterized in that: The inner ring gear (21) includes the tooth portion (213) engaged with planetary gear assembly (221), the outer edge of tooth portion (213) extends to form extension (211) towards the front end of casing (1), a plurality of inner key grooves (212) are evenly provided along the circumferential direction of the end face of extension (211), a plurality of outer key grooves (12) are evenly provided along the circumferential direction at the matching part of the end face of casing (1) and extension (211), the inner key groove (212) and the outer key groove (12) correspond one by one, and are placed into flat key (4) to realize torque transmission.

3. The concealed semi-direct drive motor according to claim 2, characterized in that: The first stop (11) is provided on the inner wall of the corresponding casing (1) of front installation cavity (16) for positioning and installing inner ring gear (21), so that extension (211) is flush with the end face of casing (1), the front end of casing (1) can be detachably installed front end cover (3) for pressing flat key (4), and the rear end of casing (1) can be detachably installed rear end cover (9).

4. The concealed semi-direct drive motor according to claim 1, characterized in that: The front end of planet carrier (22) is sleeved with front bearing (23), and front bearing (23) is supported on front end cover (3);The rear end of planet carrier (22) is sleeved with rear bearing (24), and rear bearing (24) is supported on bearing seat (6), and bearing seat (6) is positioned on second stop (14).

5. The concealed semi-direct drive motor according to claim 1, characterized in that: A plurality of fixing holes (13) are provided on the end face of casing (1) for installing locking screw to lock and fix casing (1) and front end cover (3);Fixing holes (13) are uniformly distributed along the end face of casing (1) and are staggered with outer key grooves (12).

6. The concealed semi-direct drive electric machine according to claim 1, characterized in that: Front cooling flow channel (18) communicated with front installation cavity (16) and rear cooling flow channel (19) communicated with rear installation cavity (17) are reserved on the casing (1).

7. The concealed semi-direct drive motor according to claim 1, characterized in that: The bottom of the casing (1) is provided with foot (15).

8. The concealed semi-direct drive electric machine according to claim 1, characterized in that: The rotating shaft (81) and sun wheel assembly (222) are connected by spline to ensure coaxiality.

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