Maintenance-free long-service-life permanent magnet coupler

Abstract

The maintenance-free long-service-life permanent magnet coupler comprises a first flange plate, a driving shaft is fixedly connected to the side wall of the first flange plate, a heat conduction shell is rotationally connected to the outer side of the driving shaft, and two limiting semi-rings which are symmetrically distributed are slidably connected to the side wall of the heat conduction shell; by arranging the limiting semi-rings and rotating the rotating disc, the rotating disc drives the screw rod to rotate, the screw rod and the connecting frame do threaded motion, the connecting frame slides on the outer side of the heat conduction shell, the heat conduction shell limits the connecting frame, the connecting frame is prevented from rotating, the heat conduction shell is prevented from rotating, the heat conduction efficiency is improved, and the service life of the heat conduction shell is prolonged. When the connecting frame moves, the limiting semi-ring and the sealing plate are driven to move, the sealing plate seals the heat conduction shell, the limiting semi-ring limits the driven shaft, meanwhile, the limiting semi-ring moves to different heights to limit the driven shaft at different positions, and the first fixing plate and the second fixing plate are used for installing the screw rod.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet coupling technology, specifically a maintenance-free, long-life permanent magnet coupling. Background Technology

[0002] A permanent magnet coupling is a type of coupling that uses magnetic force to transmit torque. It mainly consists of two parts: a permanent magnet and a corresponding induction part. These two parts interact magnetically to transmit torque, thus connecting two shafts. Permanent magnet couplings operate using the magnetic properties of magnetic materials. When the permanent magnet is subjected to an external magnetic field, magnetic lines of force are generated. These lines of force pass through the air gap and reach the induction part, generating magnetic force. This magnetic force can transmit torque between the two parts, thus connecting the shafts. Due to its unique performance, permanent magnet couplings are widely used in various fields. For example, in wind power generation, permanent magnet couplings are used to connect generators and reducers to transmit torque. Furthermore, they are widely used in the petroleum, chemical, metallurgical, and aerospace industries.

[0003] The prior art provides a permanent magnet eddy current coupling (publication number: CN212231321U), which includes a conductor unit and a permanent magnet unit, which are coaxially arranged with an air gap in between. The conductor unit includes a conductor back iron plate and a conductor plate. The permanent magnet unit includes a permanent magnet, a permanent magnet back iron plate, and a permanent magnet mounting plate. The conductor plate and the back iron plate are coaxially connected, and the conductor plate is located on the air gap side. The permanent magnet mounting plate and the permanent magnet back iron plate are coaxially connected, and the permanent magnet mounting plate is located on the air gap side. The permanent magnets are evenly spaced along the circumference of the permanent magnet mounting plate. The permanent magnets include an inner arc permanent magnet and an outer arc permanent magnet. Both the inner arc permanent magnet and the outer arc permanent magnet are T-shaped, and the horizontal section of the T-shape of the inner arc permanent magnet and the outer arc permanent magnet is close to the edge of the permanent magnet mounting plate.

[0004] However, the device still has the following drawbacks:

[0005] When this device is in use, the axes of the coupling are at the same height. When the heights of the driving shaft and the driven shaft are different, the coupling cannot be used. Furthermore, the permanent magnet is exposed and will attract impurities, affecting the normal use of the permanent magnet. Therefore, we need to propose a maintenance-free, long-life permanent magnet coupling. Utility Model Content

[0006] The purpose of this utility model is to provide a maintenance-free, long-life permanent magnet coupling. A rotating disk drives a screw to rotate, resulting in threaded movement between the screw and the connecting frame. The connecting frame slides outside the heat-conducting shell, which limits the connecting frame to prevent rotation. As the connecting frame moves, it moves a limiting half-ring and a sealing plate. The sealing plate seals the heat-conducting shell, and the limiting half-ring limits the driven shaft. Simultaneously, the limiting half-ring moves to different heights to limit the driven shaft at different positions. A first fixing plate and a second fixing plate are used to mount the screw, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A maintenance-free, long-life permanent magnet coupling includes a first flange, a drive shaft fixedly connected to the side wall of the first flange, a heat-conducting shell rotatably connected to the outer side of the drive shaft, two symmetrically distributed limiting semi-rings slidably connected to the side wall of the heat-conducting shell, a sealing plate fixedly connected to the outer side of each of the two limiting semi-rings, the sealing plate being slidably connected to the heat-conducting shell, a connecting frame fixedly connected to the side wall of each of the two limiting semi-rings, a screw threadedly connected to the internal thread of the connecting frame, a first fixing plate rotatably connected to one end of the screw, a second fixing plate rotatably connected to the outer side of the screw, and a rotating disk fixedly connected to one end of the screw through the second fixing plate.

[0009] Preferably, the rotating disk has a fixing bolt inside, and the fixing bolt is in contact with the second fixing plate.

[0010] Preferably, the heat-conducting shell is fixedly connected to two first fixing plates and two second fixing plates respectively.

[0011] Preferably, a permanent magnet is fixedly connected to one end of the drive shaft.

[0012] Preferably, a plurality of evenly distributed heat dissipation fins are fixedly connected to the outer side of the heat-conducting shell, and a driven shaft is provided inside the side wall of the heat-conducting shell.

[0013] Preferably, a second flange is fixedly connected to one end of the driven shaft, and a mounting plate is fixedly connected to the other end of the driven shaft.

[0014] Preferably, a copper disc is fixedly connected to the side wall of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention features a limiting half-ring. A rotating disk drives a screw to rotate, causing threaded movement between the screw and the connecting frame. The connecting frame slides on the outside of the heat-conducting shell, which limits the connecting frame to prevent rotation. As the connecting frame moves, it moves the limiting half-ring and the sealing plate. The sealing plate seals the heat-conducting shell, and the limiting half-ring limits the driven shaft. Simultaneously, the limiting half-ring moves to different heights to limit the driven shaft at different positions. The first and second fixing plates are used to install the screw. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is one of the internal structural diagrams of this utility model;

[0019] Figure 3 This is the second schematic diagram of the internal structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a partial component of this utility model.

[0021] In the diagram: 1. First flange; 2. Drive shaft; 3. Permanent magnet; 4. Heat-conducting shell; 5. Heat dissipation fins; 6. Driven shaft; 7. Second flange; 8. Mounting plate; 9. Copper plate; 10. Limiting half ring; 11. Sealing plate; 12. Connecting frame; 13. Screw; 14. First fixing plate; 15. Rotating disk; 16. Second fixing plate; 17. Fixing bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 1-4 This utility model provides a technical solution:

[0024] A maintenance-free, long-life permanent magnet coupling includes a first flange 1. A drive shaft 2 is fixedly connected to the side wall of the first flange 1. A heat-conducting shell 4 is rotatably connected to the outside of the drive shaft 2. Two symmetrically distributed limiting semi-rings 10 are slidably connected to the side wall of the heat-conducting shell 4. A sealing plate 11 is fixedly connected to the outside of each of the two limiting semi-rings 10. The sealing plate 11 is slidably connected to the heat-conducting shell 4. A connecting frame 12 is fixedly connected to the side wall of each of the two limiting semi-rings 10. A screw 13 is threadedly connected to the inside of the connecting frame 12. A first fixing plate 14 is rotatably connected to one end of the screw 13. A second fixing plate 16 is rotatably connected to the outside of the screw 13. A rotating disk 15 is fixedly connected to one end of the screw 13 through the second fixing plate 16. A fixing bolt 17 is provided inside the rotating disk 15. The fixing bolt 17 contacts the second fixing plate 16. The heat-conducting shell 4 is fixedly connected to the two first fixing plates 14 and the two second fixing plates 16 respectively.

[0025] For example, rotating the rotating disk 15 drives the screw 13 to rotate, and the screw 13 and the connecting frame 12 have threaded movement. The connecting frame 12 slides on the outside of the heat-conducting shell 4. The heat-conducting shell 4 limits the connecting frame 12 to prevent it from rotating. When the connecting frame 12 moves, it drives the limiting half ring 10 and the sealing plate 11 to move. The sealing plate 11 seals the heat-conducting shell 4, and the limiting half ring 10 limits the driven shaft 6. At the same time, the limiting half ring 10 moves to different heights to limit the driven shaft 6 at different positions. The first fixing plate 14 and the second fixing plate 16 install the screw 13.

[0026] A permanent magnet 3 is fixedly connected to one end of the drive shaft 2.

[0027] For example, the drive shaft 2 is connected to the motor and other drive components through the first flange 1, and the drive shaft 2 drives the permanent magnet 3 to rotate.

[0028] Multiple heat dissipation fins 5 are fixedly connected to the outer side of the heat conduction shell 4. A driven shaft 6 is provided inside the side wall of the heat conduction shell 4. A second flange 7 is fixedly connected to one end of the driven shaft 6, and a mounting plate 8 is fixedly connected to the other end of the driven shaft 6. A copper plate 9 is fixedly connected to the side wall of the mounting plate 8.

[0029] For example, when the permanent magnet 3 rotates, it drives the copper disk 9 to rotate through the magnetic force. The copper disk 9 drives the driven shaft 6 to rotate. The driven shaft 6 is connected to the rotating shaft that needs power through the second flange 7. When the driven shaft 6 rotates, it drives the rotating shaft to rotate. The heat-conducting shell 4 conducts heat out of the copper disk 9 and works with the heat dissipation fins 5 to dissipate heat.

[0030] Working principle: When this utility model is in use, the drive shaft 2 is connected to the motor and other drive components through the first flange 1. The drive shaft 2 drives the permanent magnet 3 to rotate. When the permanent magnet 3 rotates, it drives the copper disk 9 to rotate through magnetic force. The copper disk 9 drives the driven shaft 6 to rotate. The driven shaft 6 is connected to the rotating shaft that needs power through the second flange 7. When the driven shaft 6 rotates, it drives the rotating shaft to rotate. The heat-conducting shell 4 conducts heat out of the copper disk 9 and works with the heat dissipation fins 5 to dissipate heat.

[0031] Rotating the rotating disk 15 drives the screw 13 to rotate, and the screw 13 and the connecting frame 12 undergo threaded movement. The connecting frame 12 slides on the outside of the heat-conducting shell 4. The heat-conducting shell 4 limits the connecting frame 12 to prevent it from rotating. When the connecting frame 12 moves, it drives the limiting half ring 10 and the sealing plate 11 to move. The sealing plate 11 seals the heat-conducting shell 4, and the limiting half ring 10 limits the driven shaft 6. At the same time, the limiting half ring 10 moves to different heights to limit the driven shaft 6 at different positions. The first fixing plate 14 and the second fixing plate 16 install the screw 13.

[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 maintenance-free long-life permanent magnet coupling comprising a first flange plate (1), characterized in that: The side wall of the first flange plate (1) is fixedly connected with a driving shaft (2), the outer side of the driving shaft (2) is rotatably connected with a heat conduction shell (4), the side wall of the heat conduction shell (4) is slidably connected with two symmetrically distributed limiting half rings (10), the outer side of each of the two limiting half rings (10) is fixedly connected with a sealing plate (11), the sealing plate (11) is slidably connected with the heat conduction shell (4), the side wall of each of the two limiting half rings (10) is fixedly connected with a connecting frame (12), the inner part of the connecting frame (12) is threadedly connected with a screw rod (13), one end of the screw rod (13) is rotatably connected with a first fixed plate (14), the outer side of the screw rod (13) is rotatably connected with a second fixed plate (16), one end of the screw rod (13) penetrates through the second fixed plate (16) and is fixedly connected with a rotating disc (15).

2. A maintenance-free long-life permanent magnet coupling according to claim 1, characterized in that: The inner part of the rotating disc (15) is provided with a fixing bolt (17), and the fixing bolt (17) is in contact with the second fixed plate (16).

3. A maintenance-free long-life permanent magnet shaft coupling according to claim 1, characterized in that: The heat conduction shell (4) is fixedly connected with the two first fixed plates (14) and the two second fixed plates (16) respectively.

4. The maintenance-free long-life permanent magnetic coupling as claimed in claim 1, wherein: One end of the driving shaft (2) is fixedly connected with a permanent magnet (3).

5. The maintenance-free long-life permanent magnetic coupling as claimed in claim 2, wherein: The outer side of the heat conduction shell (4) is fixedly connected with a plurality of evenly distributed heat dissipation fins (5), and the inner part of the side wall of the heat conduction shell (4) is provided with a driven shaft (6).

6. A maintenance-free long-life permanent magnet shaft coupling according to claim 5, characterized in that: One end of the driven shaft (6) is fixedly connected with a second flange plate (7), and the other end of the driven shaft (6) is fixedly connected with a mounting disc (8).

7. A maintenance-free long-life permanent magnet shaft coupling according to claim 6, characterized in that: The side wall of the mounting disc (8) is fixedly connected with a copper disc (9).

Images