Low-speed permanent magnet motor

Abstract

The utility model relates to a low-speed permanent magnet motor, which comprises a shell, an end cover detachably and fixedly connected on the shell, stators fixedly connected in the shell and a rotor arranged in the shell and positioned between the stators, two racks are rotatably connected in the end cover and are oppositely arranged, a connecting rod is detachably and fixedly connected between the racks, and the connecting rod is fixedly connected with the shell. The end cover is rotationally connected with a first straight gear, the first straight gear is fixedly connected with an output shaft of the rotor and meshed with one rack, the end cover is rotationally connected with a small straight gear, the end cover is rotationally connected with a large straight gear, and the small straight gear is fixedly connected with a transmission shaft, so that the service life of the motor can be prolonged; by means of low-speed rotation of the transmission shaft and normal rotation of the rotor output shaft, the situation that the service life of the motor is shortened due to long-term output of large-flow current due to low-speed rotation of the motor is reduced, and the service life of the motor is further prolonged.

Description

[Technical field]

[0001] The utility model relates to the technical field of low-speed permanent magnet motors, in particular to a low-speed permanent magnet motor. [Background technology]

[0002] Low-speed permanent magnet synchronous servo motor is a kind of AC permanent magnet servo motor. In the field of small and medium capacity high-precision transmission, permanent magnet synchronous servo motor is widely used. The magnetic field is generated by adding permanent magnets to the rotor. Due to the inherent characteristics of permanent magnet materials, it no longer needs external energy to establish a strong permanent magnetic field in the surrounding space, which can simplify the motor structure and save energy. During the operation of the low-speed permanent magnet motor, it is mainly energized through the stator and the rotor set between the stators rotates to achieve the drive of external objects.

[0003] Although the permanent magnet motor in the above scheme can drive external equipment during operation, the rated drive speed of general motors is relatively fast and cannot meet the low-speed requirements. If servo drive is adopted, the motor will be in low-speed operation for a long time and will use excessive current drive, which will cause the life of the motor to be shortened under the long-term influence of large current, thereby greatly reducing its service life. [Utility Model Content]

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a low-speed permanent magnet motor which can increase the service life of the motor.

[0005] To achieve the above object, the utility model proposes a low-speed permanent magnet motor, comprising: a housing, an end cover that is detachably fixedly connected to the housing, a stator that is fixedly connected to the housing, and a rotor that is arranged in the housing and located between the stators.

[0006] Two racks are rotatably connected in the end cover, the racks are arranged opposite to each other, and a connecting rod is detachably and fixedly connected between the racks;

[0007] The end cover is rotatably connected with a spur gear 1, the spur gear 1 is fixedly connected to the output shaft of the rotor, and the spur gear 1 is meshed with one of the racks;

[0008] The end cover is rotatably connected to a small spur gear meshing with another rack, and the end cover is rotatably connected to a large spur gear meshing with the small spur gear;

[0009] The small spur gear is fixedly connected with a transmission shaft, one end of which extends outside the end cover and is rotationally connected to the end cover.

[0010] Preferably, a partition is fixedly connected to the end cover, the small spur gear and the large spur gear are located at an end of the partition away from spur gear one, and ball one is rotatably connected to the large spur gear and the small spur gear, and the ball one is in contact with the partition.

[0011] Preferably, a protrusion is fixedly connected to the large spur gear, a bearing 1 is fixedly connected to the partition, and the inner ring of the bearing 1 is fixedly connected to the protrusion.

[0012] Preferably, the end cover comprises a connecting cover 1 and a connecting cover 2, the connecting cover 1 and the connecting cover 2 are fixed by bolts, the partition is fixedly connected to the connecting cover 1 with bolts, and the connecting cover 2 is detachably fixedly connected to the shell.

[0013] Preferably, a second bearing is fixedly connected to the housing, and the rotor output shaft is fixedly connected to the inner ring of the second bearing.

[0014] Preferably, a roller is rotatably connected to the rack, and the roller is in contact with the housing.

[0015] Preferably, the two racks are provided with square fixing grooves, into which the connecting rod can enter.

[0016] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model provides a spur gear one on the end cover, and drives the spur gear one to rotate through the rotor output shaft, so that the spur gear one links the two racks to rotate. Once the rack rotates, the rack drives the small spur gear to drive the large spur gear to rotate, thereby realizing the low-speed rotation of the transmission shaft. By means of the low-speed rotation of the transmission shaft and the normal rotation of the rotor output shaft, the low-speed rotation of the motor is reduced, and the long-term output of large-flow current leads to a decrease in the service life of the motor, thereby further improving the service life of the motor.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the position of the large spur gear of the utility model;

[0020] Figure 3 It is a schematic diagram of the position of the bearing 1 of the utility model;

[0021] Figure 4 It is a schematic diagram of the position of the second bearing of the utility model.

[0022] In the figure: 1. shell; 2. end cover; 3. stator; 4. rotor; 5. rack; 6. connecting rod; 7. spur gear 1; 8. small spur gear; 9. large spur gear; 10. transmission shaft; 11. partition; 12. ball bearing 1; 13. bump; 14. bearing 1; 15. connecting cover 1; 16. connecting cover 2; 17. bearing 2; 18. roller; 19. square fixing groove. [Specific implementation method]

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] like Figures 1 to 4 The utility model discloses a low-speed permanent magnet motor, comprising: a housing 1, an end cover 2 which is detachably fixedly connected to the housing 1, a stator 3 which is fixedly connected to the housing 1, and a rotor 4 which is arranged in the housing 1 and located between the stators 3, wherein the end cover 2 is detachably fixedly connected to the housing 1 by bolts, and is mainly used to seal the stator 3 and the rotor 4;

[0028] The motor in the utility model also includes: two racks 5, a connecting rod 6, a spur gear 7, a small spur gear 8, a large spur gear 9 and a transmission shaft 10;

[0029] The spur gear 7 and two racks 5, the spur gear 7 is rotatably connected in the housing 1, and the spur gear 7 is fixedly connected to the output shaft of the rotor 4. When the rotor 4 rotates, it will drive the spur gear 7 to rotate. Once the spur gear 7 rotates, the spur gear 7 will drive the rack 5 rotatably connected in the housing 1 and one of the racks meshing with it to rotate, so that the rack 5 drives the other rack 5 that is detachably connected to it through the connecting rod 6 to rotate. When the other rack 5 rotates, the rack 5 will drive the small spur gear 8 rotatably connected to the housing 1 and meshing with it to rotate, so that the small spur gear 8 drives the large spur gear 9 that meshes with it and is rotatably connected to the housing 1 to rotate, so that the large spur gear 9 drives the transmission shaft 10 rotatably connected to the housing 1 and one end of which is fixedly connected to the large spur gear 9 to rotate, thereby realizing that the transmission shaft 10 drives the external equipment to operate.

[0030] Specifically, a partition 11 is fixedly connected to the end cover 2, mainly used to separate the end cover 2, and a ball 12 is rotatably connected to the small spur gear 8 and the large spur gear 9. The ball is in contact with the partition 11 and is mainly used to reduce the friction between the partition 11 and the large spur gear 9 and the small spur gear 8.

[0031] Specifically, a protrusion 13 is fixedly connected to the large spur gear 9, and the protrusion 13 is fixedly connected to the inner ring of a bearing 14 fixedly connected to the end cover 2, thereby reducing the friction between the large spur gear 9 and the end cover 2.

[0032] Specifically, since the end cover 2 includes a connecting cover 15 and a connecting cover 2 16, the connecting cover 15 and the connecting cover 2 16 are fixed by bolts, the partition 11 is fixedly connected to the connecting cover 15 with bolts, and the connecting cover 2 16 is detachably fixedly connected to the shell 1. The connecting cover 15 and the connecting cover 2 16 are fixed by bolts, which makes it easy for personnel to disassemble the connecting cover 15 and the connecting cover 2 16 to replace the large spur gear 9 and the small spur gear 8, and the end cover 2 and the connecting cover 2 16 are disassembled and fixed by bolts, which makes it easy for personnel to separate the connecting cover 2 16 from the shell 1.

[0033] Specifically, a second bearing 17 is fixedly connected to the housing 1 , and the inner ring of the second bearing 17 is fixedly connected to the inner ring of the output shaft of the rotor 4 , thereby reducing the friction between the output shaft of the rotor 4 and the housing 1 .

[0034] Specifically, the roller 18 is rotatably connected to the rack 5 , and the roller 18 is in contact with the housing 1 , thereby reducing the friction between the roller 18 and the end cover 2 .

[0035] Specifically, since the two racks 5 are provided with square fixing grooves 19 , the connecting rod 6 can enter the square fixing grooves 19 . When the two racks 5 need to be disassembled, the personnel only need to pull out the connecting rod 6 .

[0036] Principle of the utility model: through the rotation of the output shaft of the rotor 4, the spur gear 7 can drive one of the racks 5 to rotate. Once one of the racks 5 rotates, the rack 5 will rotate in conjunction with another rack 5 through the connecting rod 6. When the other rack 5 rotates, the rack 5 will drive the small spur gear 8 to drive the large spur gear 9 to rotate, so that the large spur gear 9 drives the transmission shaft 10 to rotate at a low speed.

[0037] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A low-speed permanent magnet motor, comprising: A housing (1), an end cover (2) which is detachably fixedly connected to the housing (1), a stator (3) which is fixedly connected to the housing (1), and a rotor (4) which is arranged in the housing (1) and between the stators (3), characterized in that: Two racks (5) are rotatably connected inside the end cover (2), the racks (5) are arranged opposite to each other, and a connecting rod (6) is detachably fixedly connected between the racks (5); A spur gear (7) is rotatably connected to the end cover (2), the spur gear (7) is fixedly connected to the output shaft of the rotor (4), and the spur gear (7) is meshed with one of the racks (5); A small spur gear (8) meshing with another rack (5) is rotatably connected to the end cover (2), and a large spur gear (9) is rotatably connected to the end cover (2), and the large spur gear (9) meshes with the small spur gear (8); A transmission shaft (10) is fixedly connected to the small spur gear (8), and one end of the transmission shaft (10) extends outside the end cover (2) and is rotationally connected to the end cover (2).

2. A low-speed permanent magnet motor according to claim 1, characterized in that: A partition plate (11) is fixedly connected to the end cover (2); the small spur gear (8) and the large spur gear (9) are located at an end of the partition plate (11) away from the spur gear one (7); and a ball bearing one (12) is rotatably connected to the large spur gear (9) and the small spur gear (8); the ball bearing one (12) is in contact with the partition plate (11).

3. A low-speed permanent magnet motor according to claim 2, characterized in that: The large spur gear (9) is fixedly connected with a protrusion (13), the partition plate (11) is fixedly connected with a bearing 1 (14), and the inner ring of the bearing 1 (14) is fixedly connected with the protrusion (13).

4. A low-speed permanent magnet motor according to claim 3, characterized in that: The end cover (2) comprises a connection cover 1 (15) and a connection cover 2 (16); the connection cover 1 (15) and the connection cover 2 (16) are fixed by bolts; the partition plate (11) is fixedly connected to the connection cover 1 (15) by bolts; and the connection cover 2 (16) is detachably fixedly connected to the housing (1).

5. The low-speed permanent magnet motor according to claim 1, characterized in that: The housing (1) is fixedly connected to a second bearing (17), and the output shaft of the rotor (4) is fixedly connected to the inner ring of the second bearing (17).

6. A low-speed permanent magnet motor according to claim 1, characterized in that: A roller (18) is rotatably connected to the rack (5), and the roller (18) is in contact with the end cover (2).

7. A low-speed permanent magnet motor according to claim 6, characterized in that: The two racks (5) are provided with square fixing grooves (19), and the connecting rod (6) can enter the square fixing grooves (19).

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