A dual-cylinder permanent magnet coupler structure for easy heat dissipation

Abstract

This utility model relates to the field of permanent magnet coupler technology and discloses a double-cylinder permanent magnet coupler structure that facilitates heat dissipation. It includes a bracket with two support plates inside, which are fixedly connected by bolts. Two permanent magnet rotors are disposed between the two support plates. By setting a transmission mechanism, this utility model enables the motor shaft to rotate while simultaneously driving the first bevel gear. Since the first and second bevel gears mesh, the second bevel gear drives the lead screw and the first double-groove pulley to rotate around the first bearing. The first double-groove pulley, via a belt, drives the second double-groove pulley to rotate around the second bearing. The rotating block and fan blades rotate synchronously with the second double-groove pulley. The fan blades generate airflow as they rotate, blowing upwards to dissipate heat from the permanent magnet rotors, preventing the permanent magnet coupler from disconnecting due to overheating.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet coupler technology, specifically a double-cylinder permanent magnet coupler structure that facilitates heat dissipation. Background Technology

[0002] A permanent magnet coupler, also known as a magnetic coupling or permanent magnet drive, mainly consists of three parts: a copper rotor, a permanent magnet rotor, and a controller. Generally, the copper rotor is connected to the motor shaft, and the permanent magnet rotor is connected to the shaft of the driven machine. There is an air gap (called an air gap) between the copper rotor and the permanent magnet rotor, without a mechanical connection for transmitting torque. This creates a soft (magnetic) connection between the motor and the driven machine, and the torque and speed of the driven machine shaft are varied by adjusting the air gap. Due to different air gap adjustment methods, permanent magnet eddy current drives are classified into different types, including standard, delayed, torque-limiting, and speed-regulating types.

[0003] A search revealed a Chinese patent document disclosing a double-cylinder permanent magnet coupler structure [Announcement No.: CN213817550U]. This structure includes an active unit and a driven unit arranged parallel to the active unit. The active unit comprises a circular plate-shaped active plate with an annular boss on the side facing the driven unit. A groove group is located on each side of the active plate, each groove group comprising several grooves arranged in a circumferential array, each groove containing a permanent magnet. A groove is arranged in a circumferential array at the top of the boss, each groove containing a permanent magnet. The driven unit comprises a circular plate-shaped driven plate with a steel ring group on the side facing the active unit. It also includes bushings that are fixedly connected to both the active and driven units, with the two bushings facing each other. The advantages of this invention are: good heat dissipation; under the same transmission power conditions, this structure is more compact, smaller in size, and has higher transmission efficiency, allowing for greater radial movement.

[0004] Most existing permanent magnet couplers have poor heat dissipation. Because the permanent magnets used inside the permanent magnet coupler are very sensitive to temperature, they will lose magnetism at high temperatures, resulting in a decrease in transmission performance and causing the permanent magnet coupler to disconnect, thus affecting its normal use. Utility Model Content

[0005] The purpose of this invention is to provide a dual-cylinder permanent magnet coupler structure that facilitates heat dissipation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-cylinder permanent magnet coupler structure for easy heat dissipation, comprising a bracket, two support plates are arranged inside the bracket, the two support plates are fixedly connected by bolts, two permanent magnet rotors are arranged between the two support plates, and bushings are fixedly connected to the opposite sides of the two support plates, one side of the bushings is fixedly connected to the inner wall of the bracket, a bearing shaft is fixedly connected to one side of the left permanent magnet rotor, one end of the bearing shaft passes through to the left side of the bracket, a motor shaft is fixedly connected to one side of the right permanent magnet rotor, one end of the motor shaft passes through to the right side of the bracket, two rotating blocks are arranged inside the bracket, and three fan blades are fixedly connected to the circumferential side of the rotating blocks;

[0007] The transmission mechanism is fixedly mounted on the motor shaft and can control the fan blades to rotate and generate wind power while the motor shaft rotates.

[0008] The transmission mechanism includes a first bevel gear fixedly connected to the surface of the motor shaft, a second bevel gear meshing with the bottom of the first bevel gear, a lead screw fixedly connected to the bottom of the second bevel gear, a first double-groove pulley fixedly connected to the bottom of the lead screw, and a second double-groove pulley fixedly connected to the bottom of the rotating block. The first double-groove pulley is connected to the second double-groove pulley via a belt.

[0009] Preferably, it also includes a jetting mechanism, which includes an air collection box fixedly connected to the top of the support frame. One side of the air collection box is fixedly connected to an air inlet pipe via a one-way valve. Both sides of the air collection box are fixedly connected to jetting pipes via one-way pressure valves. One end of the jetting pipe is fixedly connected to a diversion box, and an exhaust port is provided on one side of the diversion box.

[0010] The lead screw is connected to a transmission block on its surface, and a push rod is fixedly connected to the bottom of the transmission block. The bottom of the push rod extends into the interior of the air collection box and is fixedly connected to the push block.

[0011] Preferably, a piston plate is fixedly connected to the bottom of the push block, and the outer surface of the piston plate is in contact with the inner wall of the air collection box.

[0012] Preferably, the number of exhaust holes is several, and they are evenly distributed on one side of the distribution box.

[0013] Preferably, the bottom of the first double-groove pulley is rotatably connected to the top of the bracket via a first bearing, and the bottom of the second double-groove pulley is rotatably connected to the top of the bracket via a second bearing.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting up a transmission mechanism, this utility model can drive the first bevel gear to rotate while the motor shaft rotates. Since the first bevel gear and the second bevel gear mesh, the second bevel gear will drive the lead screw and the first double-groove pulley to rotate around the first bearing. The first double-groove pulley will drive the second double-groove pulley to rotate around the second bearing through the belt. The rotating block and the fan blade will rotate synchronously with the second double-groove pulley. When the fan blade rotates, it will generate wind force, which blows from bottom to top to dissipate heat from the permanent magnet rotor and prevent the permanent magnet coupler from disconnecting due to overheating.

[0016] 2. This utility model, by setting up an air jet mechanism, enables the transmission block to reciprocate up and down while the lead screw rotates. When the transmission block moves upward, it drives the push rod, push block, and piston plate to move upward. At this time, the air collection box is under negative pressure, and the gas will enter the interior of the air collection box through the air inlet pipe. When the transmission block moves downward, it drives the push rod, push block, and piston plate to move downward. The piston plate will compress the gas. When the gas pressure in the air collection box reaches the limit of the one-way pressure valve, the gas will be ejected from the air jet pipe and then evenly sprayed onto the permanent magnet rotor through several exhaust holes on the distribution box, further improving the heat dissipation effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 This is a perspective view of the transmission mechanism and the jet mechanism in this utility model;

[0021] Figure 5 This is a perspective view of the gas collection box of this utility model.

[0022] In the diagram: 1. Bracket; 2. Support plate; 3. Permanent magnet rotor; 4. Bushing; 5. Bearing shaft; 6. Motor shaft; 7. Rotating block; 8. Fan blade; 9. First bevel gear; 10. Second bevel gear; 11. Lead screw; 12. First double-groove pulley; 13. Second double-groove pulley; 14. Air collection box; 15. Air inlet pipe; 16. Jet pipe; 17. Flow divider box; 18. Exhaust port; 19. Transmission block; 20. Push rod; 21. Push block; 22. Piston plate. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 - Figure 5 As shown,

[0025] Example 1:

[0026] A dual-cylinder permanent magnet coupler structure for easy heat dissipation includes a bracket 1. The bracket 1 has two support plates 2 inside, which are fixedly connected by bolts. Two permanent magnet rotors 3 are arranged between the two support plates 2. Bushings 4 are fixedly connected to the opposite sides of the two support plates 2. One side of the bushings 4 is fixedly connected to the inner wall of the bracket 1. A bearing shaft 5 is fixedly connected to one side of the left permanent magnet rotor 3. One end of the bearing shaft 5 passes through to the left side of the bracket 1. A motor shaft 6 is fixedly connected to one side of the right permanent magnet rotor 3. One end of the motor shaft 6 passes through to the right side of the bracket 1. The bracket 1 has two rotating blocks 7 inside, and three fan blades 8 are fixedly connected to the circumferential side of the rotating blocks 7.

[0027] The transmission mechanism is fixedly mounted on the motor shaft 6 and can control the fan blades 8 to rotate and generate wind power while the motor shaft 6 rotates.

[0028] The transmission mechanism includes a first bevel gear 9 fixedly connected to the surface of the motor shaft 6, a second bevel gear 10 meshing with the bottom of the first bevel gear 9, a lead screw 11 fixedly connected to the bottom of the second bevel gear 10, a first double-groove pulley 12 fixedly connected to the bottom of the lead screw 11, a second double-groove pulley 13 fixedly connected to the bottom of the rotating block 7, and the first double-groove pulley 12 being connected to the second double-groove pulley 13 via a belt.

[0029] In this embodiment, considering that most existing permanent magnet couplers have poor heat dissipation, and since the permanent magnets used inside the permanent magnet coupler are very sensitive to temperature, they will lose magnetism at high temperatures, leading to a decrease in transmission performance and causing the permanent magnet coupler to disconnect, thus affecting the normal use of the permanent magnet coupler, a transmission mechanism is set up so that the motor shaft 6 can rotate while the motor drives the first bevel gear 9 to rotate. Since the first bevel gear 9 and the second bevel gear 10 mesh, the second bevel gear 10 will drive the lead screw 11 and the first double groove pulley 12 to rotate around the first bearing. The first double groove pulley 12 will drive the second double groove pulley 13 to rotate around the second bearing through the belt. The rotating block 7 and the fan blade 8 will rotate synchronously with the second double groove pulley 13. When the fan blade 8 rotates, it will generate wind force, blowing from bottom to top to dissipate heat from the permanent magnet rotor 3, thus preventing the permanent magnet coupler from disconnecting due to overheating.

[0030] It should be noted that the way the motor is connected to the motor shaft 6 is common knowledge to those skilled in the art, so it will not be described in detail here.

[0031] The bottom of the first double-groove pulley 12 is rotatably connected to the top of the bracket 1 via a first bearing, and the bottom of the second double-groove pulley 13 is rotatably connected to the top of the bracket 1 via a second bearing.

[0032] In this embodiment, by setting a first bearing and a second bearing, the first double-groove pulley 12 and the second double-groove pulley 13 can be restricted to rotating only, while improving the smoothness of their rotation process.

[0033] Example 2:

[0034] Based on Embodiment 1, in this embodiment, the transmission mechanism can control the fan blades 8 to rotate and generate wind, which blows upwards towards the permanent magnet rotor 3 to achieve the effect of heat dissipation. However, considering that if the temperature around the permanent magnet rotor 3 is too high, it is impossible to achieve rapid heat dissipation by simply blowing air upwards, this application also includes a jet mechanism. The jet mechanism includes an air collection box 14 fixedly connected to the top of the support bracket 1. One side of the air collection box 14 is fixedly connected to an air inlet pipe 15 through a one-way valve. Both sides of the air collection box 14 are fixedly connected to jet pipes 16 through one-way pressure valves. One end of the jet pipe 16 is fixedly connected to a diversion box 17. An exhaust port 18 is opened on one side of the diversion box 17.

[0035] The lead screw 11 is connected to a transmission block 19 on its surface. The bottom of the transmission block 19 is fixedly connected to a push rod 20. The bottom of the push rod 20 extends into the interior of the air collection box 14 and is fixedly connected to a push block 21.

[0036] In this embodiment, by setting up a jet mechanism, when the lead screw 11 rotates, it drives the transmission block 19 to move up and down reciprocally. When the transmission block 19 moves upward, it drives the push rod 20, the push block 21 and the piston plate 22 to move upward. At this time, the gas collection box 14 is under negative pressure, and the gas will enter the interior of the gas collection box 14 through the air inlet pipe 15. When the transmission block 19 moves downward, it drives the push rod 20, the push block 21 and the piston plate 22 to move downward. The piston plate 22 will compress the gas. When the gas pressure in the gas collection box 14 reaches the limit of the one-way pressure valve, the gas will be ejected from the jet pipe 16 and then evenly sprayed onto the permanent magnet rotor 3 through several exhaust holes 18 on the distribution box 17, further improving the heat dissipation effect.

[0037] It should be noted that the one-way valve is the valve that allows air to enter the air collection box 14, and the one-way pressure valve is the valve that allows air to exit the jet pipe 16.

[0038] A piston plate 22 is fixedly connected to the bottom of the push block 21, and the outer surface of the piston plate 22 is in contact with the inner wall of the air collection box 14.

[0039] In this embodiment, by setting the piston plate 22, a sealed cavity can be formed in the gas collection box 14, so that the gas collection box 14 can complete the process of gas collection and exhaust, thereby improving the sealing performance of the gas collection box 14.

[0040] There are several exhaust ports 18, which are evenly distributed on one side of the distribution box 17.

[0041] In this embodiment, by setting exhaust holes 18, when the gas is discharged from the jet pipe 16, it will be evenly sprayed onto the permanent magnet rotor 3 by multiple exhaust holes 18, which can improve the heat dissipation effect.

[0042] Working principle: While the motor drives the motor shaft 6 to rotate, it also drives the first bevel gear 9 to rotate. Since the first bevel gear 9 and the second bevel gear 10 mesh, the second bevel gear 10 will drive the lead screw 11 and the first double groove pulley 12 to rotate around the first bearing. The first double groove pulley 12 will drive the second double groove pulley 13 to rotate around the second bearing through the belt. The rotating block 7 and the fan blade 8 will rotate synchronously with the second double groove pulley 13. When the fan blade 8 rotates, it will generate wind force, which blows from bottom to top to dissipate heat from the permanent magnet rotor 3 and prevent the permanent magnet coupler from disconnecting due to overheating.

[0043] By setting up an air jet mechanism, when the lead screw 11 rotates, it drives the transmission block 19 to move up and down reciprocally. When the transmission block 19 moves upward, it drives the push rod 20, the push block 21, and the piston plate 22 to move upward. At this time, the air collection box 14 is under negative pressure, and the gas will enter the interior of the air collection box 14 through the air inlet pipe 15. When the transmission block 19 moves downward, it drives the push rod 20, the push block 21, and the piston plate 22 to move downward. The piston plate 22 will compress the gas. When the gas pressure in the air collection box 14 reaches the limit of the one-way pressure valve, the gas will be ejected from the air jet pipe 16 and then evenly sprayed onto the permanent magnet rotor 3 through several exhaust holes 18 on the distribution box 17, further improving the heat dissipation effect.

[0044] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] 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 double-cylinder type permanent magnet coupler structure facilitating heat dissipation, comprising a support (1), the inside of the support (1) is provided with two support plates (2), the two support plates (2) are fixedly connected through bolts, and two permanent magnet rotors (3) are arranged between the two support plates (2), characterized in that: Both of the two support plates (2) are fixedly connected to bushings (4) on opposite sides. One side of the bushings (4) is fixedly connected to the inner wall of the bracket (1). One side of the permanent magnet rotor (3) on the left is fixedly connected to a bearing shaft (5). One end of the bearing shaft (5) extends through to the left side of the bracket (1). One side of the permanent magnet rotor (3) on the right is fixedly connected to a motor shaft (6). One end of the motor shaft (6) extends through to the right side of the bracket (1). Two rotating blocks (7) are provided inside the bracket (1). Three fan blades (8) are fixedly connected to the circumferential side of the rotating blocks (7). The transmission mechanism is fixedly mounted on the motor shaft (6) and can control the fan blades (8) to rotate and generate wind power while the motor shaft (6) rotates.

2. The double cylinder type permanent magnet coupler structure according to claim 1, wherein: The transmission mechanism includes a first bevel gear (9) fixedly connected to the surface of the motor shaft (6), a second bevel gear (10) meshing with the bottom of the first bevel gear (9), a lead screw (11) fixedly connected to the bottom of the second bevel gear (10), a first double groove pulley (12) fixedly connected to the bottom of the lead screw (11), and a second double groove pulley (13) fixedly connected to the bottom of the rotating block (7). The first double groove pulley (12) is connected to the second double groove pulley (13) via a belt.

3. The double cylinder type permanent magnet coupler structure according to claim 2, wherein: It also includes a jetting mechanism, which includes an air collection box (14) fixedly connected to the top of the support bracket (1). One side of the air collection box (14) is fixedly connected to an air inlet pipe (15) through a one-way valve. Both sides of the air collection box (14) are fixedly connected to jet pipes (16) through one-way pressure valves. One end of the jet pipe (16) is fixedly connected to a diversion box (17). An exhaust port (18) is opened on one side of the diversion box (17). The surface of the lead screw (11) is connected to a transmission block (19), and the bottom of the transmission block (19) is fixedly connected to a push rod (20). The bottom of the push rod (20) extends into the interior of the air collection box (14) and is fixedly connected to a push block (21).

4. The double cylinder type permanent magnet coupler structure according to claim 3, wherein: The bottom of the push block (21) is fixedly connected to a piston plate (22), and the outer surface of the piston plate (22) is in contact with the inner wall of the gas collection box (14).

5. The double cylinder type permanent magnet coupler structure according to claim 3, wherein: The number of exhaust holes (18) is several, and they are evenly distributed on one side of the distribution box (17).

6. The double cylinder type permanent magnet coupler structure according to claim 2, wherein: The bottom of the first double-groove pulley (12) is rotatably connected to the top of the bracket (1) via a first bearing, and the bottom of the second double-groove pulley (13) is rotatably connected to the top of the bracket (1) via a second bearing.

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