Coupling for magnetic levitation high-speed motor

Abstract

The utility model belongs to the technical field of couplings, and particularly relates to a coupler for a magnetic levitation high-speed motor, which comprises a first coupling seat, a second coupling seat is arranged at one end of the first coupling seat, the first coupling seat comprises a first locking block, and a first connecting block is fixedly connected to one end, close to the second coupling seat, of the first locking block. The end, close to the second coupling seat, of the first connecting block is fixedly connected with a plurality of convex claws, the convex claws are annularly distributed, the number of the convex claws is an even number, magnetic steel grooves are formed in the end faces of the convex claws, magnetic steel is fixedly connected into the magnetic steel grooves, the second coupling seat comprises a second locking block, and the end, close to the first coupling seat, of the second locking block is fixedly connected with a second connecting block. According to the magnetic suspension high-speed motor coupling, the main defect that a traditional coupling has the high requirement for concentricity is overcome, the requirement for connection of a driving shaft of a magnetic suspension high-speed motor and a driven shaft at the load end can be met, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of coupling technology, and in particular relates to a coupling for a high-speed magnetic levitation motor. Background Technology

[0002] As a connecting device, the main function of a coupling is to connect the drive shaft and the transmission shaft so that the drive end can drive the load end to operate. Examples include rubber pad couplings, plum blossom pad couplings, and chain couplings. Traditional couplings mostly rely on physical contact to transmit torque, which has unavoidable defects such as vibration, noise, wear, and difficulty in maintaining concentricity.

[0003] Utility model patent application number 2018220749632 discloses a magnetic coupling, including a first shaft joint and a second shaft joint. The first and second shaft joints are flange structures, and multiple magnets are embedded in the end face of the transmission disc of the first shaft joint. The first and second shaft joints are respectively installed on two transmission shafts that need to transmit power. N and S magnetic poles are evenly arranged on the planes of the opposite first and second shaft joints of the coupling. This utility model patent has a simple structure, the two transmission shafts connected by the coupling are physically completely separated, the coaxiality is very convenient to adjust, and a large error is allowed.

[0004] However, in certain specific situations, such as the connection between the drive shaft and the driven shaft of a magnetic levitation high-speed motor, the above couplings cannot meet the connection requirements of the drive shaft and the driven shaft of the load end of the magnetic levitation high-speed motor, affecting the relative position of the magnetic levitation bearing and the shaft, and thus having a significant impact on the motor performance. In addition, magnets are arranged on the opposing planes of the first and second shaft sections of the coupling, which increases the manufacturing cost of the coupling. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide a coupling for a high-speed maglev motor, which overcomes the main defect of traditional couplings that have high requirements for concentricity, can meet the connection requirements of the drive shaft and the driven shaft at the load end of the high-speed maglev motor, and has low manufacturing cost and long service life.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A coupling for a high-speed maglev motor includes a first coupling seat, a second coupling seat at one end of the first coupling seat, a first locking block, a first connecting block fixedly connected to the end of the first locking block near the second coupling seat, and a plurality of protruding claws fixedly connected to the end of the first connecting block near the second coupling seat. The plurality of protruding claws are arranged in a ring and the number of protruding claws is even. Each end face of the protruding claws is provided with a magnetic steel groove, and a magnet is fixedly connected in the magnetic steel groove. The second coupling seat includes a second locking block, a second connecting block fixedly connected to the end of the second locking block near the first coupling seat, and a plurality of protruding claw grooves provided at the end of the second connecting block near the first coupling seat, with the protruding claws located in their corresponding protruding claw grooves.

[0008] The following are further optimizations of the above technical solution by this utility model:

[0009] Rubber pads are fixed to both sides of the protruding claw, and a gap is provided between the rubber pads and the sides of the corresponding protruding claw grooves.

[0010] Further optimization: The gap value is 0.1±0.02mm.

[0011] Further optimization: A first dividing groove is provided in the first coupling seat to divide the first coupling seat into two parts, and a second dividing groove is provided in the second coupling seat to divide the second coupling seat into two parts.

[0012] Further optimization: A protective cover assembly is fitted onto the outside of the connection between the first coupling seat and the second coupling seat.

[0013] Further optimization: The protective cover assembly includes a first protective shell and a second protective shell, with a first retaining ring and a second retaining ring respectively fixed to the ends of the first protective shell and the second protective shell that are far apart from each other.

[0014] Further optimization: The inner diameter of the first retaining ring is smaller than the outer diameter of the first connecting block and larger than the outer diameter of the first locking block; the inner diameter of the second retaining ring is smaller than the outer diameter of the second connecting block and larger than the outer diameter of the second locking block.

[0015] Further optimization: Multiple first connecting frames are fixedly connected to the outer surface of the first protective shell near the position of the second protective shell, and second connecting frames are fixedly connected to the outer surface of the second protective shell at the corresponding positions of the first connecting frames. The cross-sectional shape of the first connecting frames and the second connecting frames is "L" shaped.

[0016] Further optimization: Both the first connecting bracket and the second connecting bracket are provided with threaded holes, and the two threaded holes are set correspondingly.

[0017] Further optimization: An anti-rotation block is fixed to the inner wall of the second protective shell, and the anti-rotation block is located in the second partition groove.

[0018] This invention overcomes the major drawback of traditional couplings, which have high concentricity requirements. Through rational design, it provides a new coupling that transmits torque without physical contact, using the tangential component of the magnetic field coupling force in ferromagnetism. This reduces the concentricity requirements between the motor drive shaft and the driven shaft at the load end. Furthermore, magnets are only installed on the first coupling seat, not the second, thus reducing the production cost of the coupling. The rational design of the protective cover assembly provides good dust protection and effectively protects the coupling seat, improving the service life of the coupling. At the same time, it solves the defects of traditional couplings such as vibration, noise, and wear, making it particularly suitable for magnetic levitation high-speed motor applications. It is also simple to process and easy to install.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the first coupling seat in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the second coupling seat in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the protective cover assembly in an embodiment of the present utility model.

[0024] In the figure: 1-First coupling seat; 101-First locking block; 102-First connecting block; 103-Protruding claw; 104-Magnet; 105-First partition groove; 2-Second coupling seat; 201-Second locking block; 202-Second connecting block; 203-Protruding claw groove; 204-Second partition groove; 3-Protective cover assembly; 301-First protective shell; 302-First retaining ring; 303-First connecting frame; 304-Second protective shell; 305-Second retaining ring; 306-Second connecting frame; 307-Anti-rotation block. Detailed Implementation

[0025] like Figure 1-4 As shown: A coupling for a high-speed maglev motor includes a first coupling seat 1, and a second coupling seat 2 is provided at one end of the first coupling seat 1.

[0026] The first coupling seat 1 includes a first locking block 101. A first connecting block 102 is fixedly connected to one end of the first locking block 101 near the second coupling seat 2. Six protruding claws 103 are fixedly connected to one end of the first connecting block 102 near the second coupling seat 2. The six protruding claws 103 are arranged in a ring. A magnetic groove is opened on the end face of each protruding claw 103. A magnet 104 is fixedly connected in the magnetic groove.

[0027] In addition to this embodiment, the number of claws 103, magnet slots and magnets 104 can be two, four or more, and their number is even.

[0028] The first coupling seat 1 has a first dividing groove 105 inside, which is used to divide the first coupling seat 1 into two parts.

[0029] This design provides through holes and threaded holes on the two parts of the first coupling seat 1, making it convenient to connect the first coupling seat 1 to the drive shaft of the magnetic levitation high-speed motor.

[0030] The second coupling seat 2 includes a second locking block 201. A second connecting block 202 is fixedly connected to one end of the second locking block 201 near the first coupling seat 1. The second connecting block 202 near the first coupling seat 1 has six protruding claw grooves 203, and the protruding claws 103 are located in the corresponding protruding claw grooves 203.

[0031] This design relies on the tangential component of the magnetic field coupling force in the torsional direction to provide the transmitted torque. The magnitude of the transmitted torque is controlled by adjusting the axial distance between the first coupling seat 1 and the second coupling seat 2. When the axial distance between the first coupling seat 1 and the second coupling seat 2 is reduced, the torque transmitted by the device increases, and vice versa.

[0032] Rubber pads are fixed to both sides of the claw 103.

[0033] This design solves the problems of vibration, noise, and wear in traditional couplings.

[0034] A gap is provided between the rubber pad and the side of its corresponding claw groove 203.

[0035] This design overcomes the shortcomings of traditional couplings that require high concentricity.

[0036] The gap value is 0.1±0.02mm.

[0037] The second coupling seat 2 has a second partition groove 204, which is used to divide the second coupling seat 2 into two parts.

[0038] This design provides through holes and threaded holes on the two parts of the second coupling seat 2, making it convenient to connect the second coupling seat 2 to the driven shaft at the load end.

[0039] A protective cover assembly 3 is fitted onto the outside of the connection between the first coupling seat 1 and the second coupling seat 2.

[0040] The protective cover assembly 3 includes a first protective shell 301 and a second protective shell 304, with a first retaining ring 302 and a second retaining ring 305 respectively fixed to one end of the first protective shell 301 and the second protective shell 304 that are far apart from each other.

[0041] With this design, the interiors of the first protective shell 301 and the second protective shell 304 form a protective cavity, and the connecting part of the first coupling seat 1 and the second coupling seat 2 is located inside the protective cavity. This prevents dust and oil from the surrounding environment from adhering to the surface of the connecting part or entering the gap of the connecting part, thereby increasing corrosion and wear on the coupling and reducing its service life.

[0042] The inner diameter of the first retaining ring 302 is smaller than the outer diameter of the first connecting block 102 and larger than the outer diameter of the first locking block 101. The inner diameter of the second retaining ring 305 is smaller than the outer diameter of the second connecting block 202 and larger than the outer diameter of the second locking block 201, thereby facilitating the limitation of the position of the protective cover assembly 3 in the axial direction of the coupling seat.

[0043] Two first connecting frames 303 are fixedly attached to the outer surface of the first protective shell 301 near the position of the second protective shell 304. Two second connecting frames 306 are fixedly attached to the outer surface of the second protective shell 304 at positions corresponding to the first connecting frames 303.

[0044] In addition to this embodiment, the number of the first connecting bracket 303 and the second connecting bracket 306 may be more than two.

[0045] The cross-sectional shape of both the first connecting frame 303 and the second connecting frame 306 is an "L" shape.

[0046] Both the first connecting bracket 303 and the second connecting bracket 306 have threaded holes, and the two threaded holes are set correspondingly.

[0047] This design allows for easy connection of the first connecting bracket 303 and the second connecting bracket 306 together by screwing screws into the corresponding two threaded holes, thereby connecting the first protective shell 301 and the second protective shell 304 together and providing effective protection for the coupling seat.

[0048] An anti-rotation block 307 is fixedly attached to the inner wall of the second protective shell 304, and the anti-rotation block 307 is located in the second partition groove 204.

[0049] The anti-rotation block 307 is long and narrow.

[0050] With this design, the anti-rotation block 307 is located within the second partition groove 204, which limits the position of the protective cover assembly 3 in the circumferential direction of the coupling seat.

[0051] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A coupling for a high-speed maglev motor, comprising a first coupling seat (1), characterized in that: A second coupling seat (2) is provided at one end of the first coupling seat (1). The first coupling seat (1) includes a first locking block (101). A first connecting block (102) is fixedly connected to one end of the first locking block (101) near the second coupling seat (2). A plurality of protruding claws (103) are fixedly connected to one end of the first connecting block (102) near the second coupling seat (2). The plurality of protruding claws (103) are arranged in a ring shape, and the number of protruding claws (103) is even. (103) has a magnetic groove on its end face, and a magnet (104) is fixed in the magnetic groove. The second coupling seat (2) includes a second locking block (201). A second connecting block (202) is fixed at one end of the second locking block (201) near the first coupling seat (1). A plurality of claw grooves (203) are opened at one end of the second connecting block (202) near the first coupling seat (1). The claws (103) are located in the corresponding claw grooves (203).

2. The coupling for a high-speed maglev motor according to claim 1, characterized in that: Both sides of the protruding claw (103) are fixed with rubber pads, and a gap is provided between the rubber pads and the sides of the corresponding protruding claw groove (203).

3. The coupling for a high-speed maglev motor according to claim 2, characterized in that: The value of the gap is 0.1 ± 0.02 mm.

4. The coupling for a high-speed maglev motor according to claim 3, characterized in that: The first coupling seat (1) has a first dividing groove (105) for dividing the first coupling seat (1) into two parts, and the second coupling seat (2) has a second dividing groove (204) for dividing the second coupling seat (2) into two parts.

5. A coupling for a high-speed maglev motor according to claim 4, characterized in that: A protective cover assembly (3) is fitted on the outside of the connection between the first coupling seat (1) and the second coupling seat (2).

6. A coupling for a high-speed maglev motor according to claim 5, characterized in that: The protective cover assembly (3) includes a first protective shell (301) and a second protective shell (304), with a first retaining ring (302) and a second retaining ring (305) respectively fixed to one end of the first protective shell (301) and the second protective shell (304) that are far apart from each other.

7. A coupling for a high-speed maglev motor according to claim 6, characterized in that: The inner diameter of the first retaining ring (302) is smaller than the outer diameter of the first connecting block (102) and larger than the outer diameter of the first locking block (101). The inner diameter of the second retaining ring (305) is smaller than the outer diameter of the second connecting block (202) and larger than the outer diameter of the second locking block (201).

8. A coupling for a high-speed maglev motor according to claim 7, characterized in that: Multiple first connecting brackets (303) are fixedly connected to the outer surface of the first protective shell (301) near the position of the second protective shell (304). Second connecting brackets (306) are fixedly connected to the outer surface of the second protective shell (304) at positions corresponding to the first connecting brackets (303). The cross-sectional shape of the first connecting brackets (303) and the second connecting brackets (306) is "L" shaped.

9. A coupling for a high-speed maglev motor according to claim 8, characterized in that: Both the first connecting bracket (303) and the second connecting bracket (306) are provided with threaded holes, and the two threaded holes are provided correspondingly.

10. A coupling for a high-speed maglev motor according to claim 9, characterized in that: An anti-rotation block (307) is fixedly attached to the inner wall of the second protective shell (304), and the anti-rotation block (307) is located in the second partition groove (204).

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