Polygonal semi-direct-drive motor connecting structure

Abstract

The utility model relates to the technical field of motors, and discloses a polygonal semi-direct-drive motor connecting structure, which comprises a shell, a stator is mounted in the shell, a rotor is mounted on the inner side of the stator, an output shaft is mounted in the middle of the rotor, an air delivery hole is formed in the shell, a mounting gasket is mounted at the front end of the shell, and the mounting gasket is mounted on the outer side of the shell. And a front cover is mounted outside the mounting gasket in a sleeving manner. According to the polygonal semi-direct-drive motor connecting structure, the auxiliary mounting cover is sleeved with the front cover through the balls, when the output shaft is mounted, the end of the output shaft is mounted on the speed reducer, and the auxiliary mounting cover is sleeved with the mounting bearing of the speed reducer, that is, in the mounting process of the auxiliary mounting cover, the bearing on the speed reducer is used for mounting the output shaft; the friction force during the rotation of the output shaft is reduced, the bearingless operation of the motor is realized, the axial space size can be reduced, the cost is reduced, and the operation and maintenance cost of the bearing is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically a polygonal semi-direct drive motor connection structure. Background Technology

[0002] The semi-direct drive concept arose from the problems encountered in the development of direct drive and doubly fed wind turbines towards larger scale. It combines the characteristics of both. Structurally, semi-direct drive is similar to doubly fed wind turbines, and it has the characteristics of diverse layout forms. At the same time, the shaftless structure currently under research also has a similar appearance to direct drive.

[0003] Typically, polygonal semi-direct drive motors are installed inside a housing, and a bearing needs to be installed on the outside of one end of the output shaft. The bearing ensures the stability of the output shaft during rotation. When installing and using the bearing, it is necessary to ensure that the bearing and the output shaft are installed with an interference fit to avoid the bearing loosening and affecting the rotation of the output shaft. Therefore, the installation of the bearing on the output shaft requires close cooperation from the staff, which makes the installation of the bearing time-consuming and labor-intensive, increasing the installation cost of the polygonal semi-direct drive motor. To address this, we propose a connection structure for polygonal semi-direct drive motors. Utility Model Content

[0004] To address the shortcomings of existing polygonal semi-direct drive motor connection structures, this utility model provides a polygonal semi-direct drive motor connection structure. This structure features an auxiliary mounting cover fitted inside the front cover. When the sealing cover is removed and the output shaft is simultaneously mounted on the reducer, the front end of the auxiliary mounting cover forms an opening, allowing it to contact the bearings on the reducer. This reduces friction and improves rotational efficiency when the output shaft rotates, thus solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a polygonal semi-direct drive motor connection structure, including a housing, a stator installed inside the housing, a rotor installed inside the stator, an output shaft installed in the middle of the rotor, an air supply hole opened inside the housing, a mounting gasket installed at the front end of the housing, a front cover sleeved on the outside of the mounting gasket, an auxiliary mounting cover installed on the inside of the front cover by ball bearings, and a threaded sleeve sleeved on the outside of the output shaft.

[0006] Preferably, a rear cover plate is installed at the rear end of the housing, a rear fan blade is installed at the rear end of the output shaft, the rear fan blade is disposed between the housing and the rear cover plate, and an air outlet is provided inside the rear cover plate.

[0007] Preferably, the air inlets are arranged at equal intervals inside the housing, and the two ends of the air inlets extend to the two ends of the stator respectively.

[0008] Preferably, the mounting gasket has a diamond-shaped groove inside, the front cover has a diamond shape on the outside, and the mounting gasket is movably fitted inside the diamond-shaped groove.

[0009] Preferably, a sealing cover is fitted onto the outside of the front cover, and a fastening bolt is installed inside the sealing cover. The fastening bolt passes through the interior of the sealing cover, the front cover, and the mounting gasket in sequence, and the sealing cover covers the front end of the auxiliary mounting cover.

[0010] Preferably, the inner side of the auxiliary mounting cover is provided with a threaded groove, the auxiliary mounting cover and the threaded sleeve are threadedly connected to each other, the ball is round, and the ball is arranged at equal intervals between the front cover and the auxiliary mounting cover.

[0011] Preferably, the sealing cover is disposed at the front end of the auxiliary mounting cover, and the front end of the output shaft is mounted on the reducer, and the front end of the auxiliary mounting cover is sleeved on the reducer mounting bearing.

[0012] Compared with the existing polygonal semi-direct drive motor connection structure, this utility model has the following advantages:

[0013] 1. The polygonal semi-direct drive motor connection structure uses an auxiliary mounting cover that is fitted inside the front cover with ball bearings. When the output shaft is installed, the end of the output shaft is mounted on the reducer, and the auxiliary mounting cover is fitted onto the reducer's mounting bearing. In other words, during the installation of the auxiliary mounting cover, the bearing on the reducer is used to reduce the friction when the output shaft rotates, thus realizing bearingless operation of the motor. This can reduce the axial space size, lower the cost, and also reduce the operating and maintenance costs of the bearing.

[0014] 2. The polygonal semi-direct drive motor connection structure has a rear fan blade installed at the rear end of the output shaft. The rear fan blade drives the air circulation inside the housing. At the same time, the housing has an air outlet. The air is guided through the air outlet and transmitted to the front end of the housing, thereby improving the air circulation and the overall heat dissipation performance of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0017] Figure 3 This is a schematic diagram of the present invention without an outer shell structure;

[0018] Figure 4 This is a schematic diagram of the connecting cover plate structure of this utility model;

[0019] Figure 5This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 6 This is an enlarged structural diagram of section B of the present invention.

[0021] In the diagram: 1. Outer casing; 2. Stator; 3. Rotor; 4. Output shaft; 5. Air inlet; 6. Rear cover plate; 7. Rear fan blade; 8. Mounting gasket; 9. Front cover; 10. Sealing cover plate; 11. Fastening bolt; 12. Auxiliary mounting cover; 13. Ball bearing; 14. Threaded sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A polygonal semi-direct drive motor connection structure includes a housing 1, a stator 2 installed inside the housing 1 to ensure stability when the stator 2 is positioned, a rotor 3 installed inside the stator 2, and the stator 2 and rotor 3 working together to drive the output shaft 4 to rotate synchronously. The output shaft 4 is installed in the middle of the rotor 3. An air inlet 5 is provided inside the housing 1. After the air is transmitted through the air inlet 5, the cooling gas can be controlled to be transmitted to the front end of the housing 1 to improve the heat dissipation of the front end of the housing 1. A mounting gasket 8 is installed at the front end of the housing 1. A front cover 9 is sleeved on the outside of the mounting gasket 8. The front cover 9 is designed in a rhombus shape to ensure the stability of the motor during installation. An auxiliary mounting cover 12 is installed on the inside of the front cover 9 through ball bearings 13. A threaded sleeve 14 is sleeved on the outside of the output shaft 4.

[0024] Please see Figure 2 A rear cover plate 6 is installed at the rear end of the housing 1, and a rear fan blade 7 is installed at the rear end of the output shaft 4. The rear fan blade 7 is located between the housing 1 and the rear cover plate 6. An air outlet is opened inside the rear cover plate 6. The rear fan blade 7 is located at the rear end of the housing 1 and is installed outside the output shaft 4. When the output shaft 4 rotates, the output shaft 4 drives the rear fan blade 7 to rotate, that is, the gas can be transmitted and processed inside the housing 1.

[0025] Please see Figure 5The air inlets 5 are arranged at equal intervals inside the housing 1, and the two ends of the air inlets 5 extend to the two ends of the stator 2 respectively. The air inlets 5 are opened inside the housing 1, and the two ends of the air inlets 5 extend to the two ends of the stator 2 in sequence. During the process of the rear fan blade 7 driving the gas flow, the gas passes through the air inlets 5 and is simultaneously transmitted to the front end. That is, during the process of the rear fan blade 7 driving the gas flow, the gas flow is improved, and the gas is prevented from directly passing through the rotor 3, which would affect the rotation of the output shaft 4. At the same time, it is ensured that the gas is transmitted to the front end of the housing 1 to ensure the overall heat dissipation of the equipment.

[0026] Please see Figure 6 The mounting pad 8 has a diamond-shaped groove inside, and the front cover 9 has a diamond shape on the outside. The mounting pad 8 is movably fitted inside the diamond-shaped groove. The front cover 9 is diamond-shaped. At the same time, when the front cover 9 is installed at the front end of the outer shell 1, it is snapped into the mounting pad 8, which improves the stability of the front cover 9 when it is spliced ​​at the front end of the outer shell 1.

[0027] Please see Figure 6 A sealing cover plate 10 is fitted onto the outside of the front cover 9. A fastening bolt 11 is installed inside the sealing cover plate 10. The fastening bolt 11 passes through the interior of the sealing cover plate 10, the front cover 9 and the mounting gasket 8 in sequence. The sealing cover plate 10 covers the front end of the auxiliary mounting cover 12 and is installed inside the sealing cover plate 10 by the fastening bolt 11. That is, the fastening bolt 11 drives the sealing cover plate 10, the front cover 9 and the mounting gasket 8 to maintain stability when they are spliced ​​in the internal position of the outer shell 1, and ensures that the mounting gasket 8 and the front cover 9 maintain stability when they are spliced ​​in the front position of the outer shell 1.

[0028] Please see Figure 6 The auxiliary mounting cover 12 has a threaded groove on its inner side. The auxiliary mounting cover 12 and the threaded sleeve 14 are threadedly connected to each other. The balls 13 are round and are arranged at equal intervals between the front cover 9 and the auxiliary mounting cover 12. The balls 13 are installed between the front cover 9 and the auxiliary mounting cover 12. At the same time, the threaded sleeve 14 is set on the inner side of the auxiliary mounting cover 12. When the output shaft 4 rotates, the auxiliary mounting cover 12 rotates synchronously with the output shaft 4. Meanwhile, the balls 13 are installed on the outside of the auxiliary mounting cover 12 to reduce the friction of the auxiliary mounting cover 12, thereby realizing the bearingless operation of the motor. This can reduce the axial space size, reduce costs, and also reduce the operating and maintenance costs of the bearings.

[0029] Please see Figure 2The sealing cover 10 is located at the front end of the auxiliary mounting cover 12. The front end of the output shaft 4 is mounted on the reducer, and the front end of the auxiliary mounting cover 12 is sleeved on the reducer mounting bearing. The output shaft 4 is sleeved on the middle of the auxiliary mounting cover 12. After the sealing cover 10 is removed, the auxiliary mounting cover 12 is mounted on the reducer. The auxiliary mounting cover 12 is controlled to be outside the bearing on the reducer. The bearing of the reducer can ensure the stability of the output shaft 4 when it rotates. The output shaft 4 is sleeved on the middle of the sealing cover 10. When the output shaft 4 rotates, the threaded sleeve 14 and the auxiliary mounting cover 12 are threadedly connected to each other. The stator 2 can drive the auxiliary mounting cover 12 to rotate synchronously. At the same time, the sealing cover 10 covers the outside of the front end of the auxiliary mounting cover 12, that is, the sealing cover 10 protects the outside of the auxiliary mounting cover 12 and reduces the entry of dust into the equipment.

[0030] Please see Figure 1 A speed reducer is an independent component consisting of gear transmission or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine. The front end of the speed reducer is equipped with a bearing. Both the speed reducer and the bearing are existing technologies, and no improvements have been made to them in this application, so they will not be described in detail.

[0031] Working principle: In use, the front cover 9 has a diamond-shaped structure on the outside. When installing the stator 2 and rotor 3, the stator 2 and rotor 3 can be placed inside the outer shell 1. At the same time, the sealing cover 10 is placed at the front end of the front cover 9, that is, the sealing cover 10 protects the outside of the front cover 9. When the rotor 3 drives the output shaft 4 to rotate, the output shaft 4 can drive the threaded sleeve 14 to rotate. When the threaded sleeve 14 rotates, it avoids the problem of needing to install a bearing between the auxiliary mounting cover 12 and the threaded sleeve 14 when installing the output shaft 4, which would waste time during bearing installation. At the same time, during the control of the rotation of the output shaft 4, the output shaft 4 drives the rear fan blade 7 to rotate. The rear fan blade 7 drives the gas to be transmitted into the outer shell 1, and after being guided by the air outlet 5, it ensures that the gas is sufficiently transmitted into the outer shell 1.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polygonal semi-direct drive motor connection structure, comprising a housing (1), wherein a stator (2) is installed inside the housing (1), and a rotor (3) is installed on the inner side of the stator (2), characterized in that: An output shaft (4) is installed in the middle of the rotor (3). An air supply hole (5) is opened inside the housing (1). An installation gasket (8) is installed at the front end of the housing (1). A front cover (9) is sleeved on the outside of the installation gasket (8). An auxiliary installation cover (12) is installed on the inside of the front cover (9) through a ball bearing (13). A threaded sleeve (14) is sleeved on the outside of the output shaft (4).

2. The polygonal semi-direct drive motor connection structure according to claim 1, characterized in that: The rear end of the outer casing (1) is equipped with a rear cover plate (6), and the rear end of the output shaft (4) is equipped with a rear fan blade (7). The rear fan blade (7) is disposed between the outer casing (1) and the rear cover plate (6). An air outlet is provided inside the rear cover plate (6).

3. The polygonal semi-direct drive motor connection structure according to claim 1, characterized in that: The air inlets (5) are arranged at equal intervals inside the outer shell (1), and the two ends of the air inlets (5) extend to the two ends of the stator (2).

4. The polygonal semi-direct drive motor connection structure according to claim 1, characterized in that: The mounting pad (8) has a diamond-shaped groove inside, and the front cover (9) has a diamond shape on the outside. The mounting pad (8) is movably fitted inside the diamond-shaped groove.

5. The polygonal semi-direct drive motor connection structure according to claim 1, characterized in that: The front cover (9) is fitted with a sealing cover plate (10), and a fastening bolt (11) is installed inside the sealing cover plate (10). The fastening bolt (11) passes through the interior of the sealing cover plate (10), the front cover (9) and the mounting gasket (8) in sequence. The sealing cover plate (10) covers the front end of the auxiliary mounting cover (12).

6. The polygonal semi-direct drive motor connection structure according to claim 1, characterized in that: The inner side of the auxiliary mounting cover (12) is provided with a threaded groove. The auxiliary mounting cover (12) and the threaded sleeve (14) are threadedly connected to each other. The ball (13) is round and the ball (13) is arranged at equal intervals between the front cover (9) and the auxiliary mounting cover (12).

7. The polygonal semi-direct drive motor connection structure according to claim 5, characterized in that: The sealing cover (10) is located at the front end of the auxiliary mounting cover (12), while the front end of the output shaft (4) is mounted on the reducer, and the front end of the auxiliary mounting cover (12) is sleeved on the reducer mounting bearing.

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