Magnetic suspension bearing structure

Abstract

The invention discloses a magnetic suspension bearing structure, and relates to the technical field of magnetic suspension bearing structures, the magnetic suspension bearing structure has the advantages of firmly fixing a coil and reducing and avoiding damage to the coil, and the key points of the technical scheme are as follows: the magnetic suspension bearing structure comprises a transversely arranged rotating shaft and a rotor which is nested outside the rotating shaft and is coaxially fixed with the rotating shaft; a stator core matched with the rotor is nested outside the rotor, a plurality of uniformly arranged stator teeth are radially and inwards projected on one side, facing the rotor, of the stator core, the plurality of stator teeth are arranged at intervals along the circumferential direction of the stator, and a coil is wound outside each stator tooth. And each coil is provided with a connecting assembly for reducing the possibility that the working efficiency is influenced by displacement caused by loosening of the coil.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic suspension bearing structures, in particular to a magnetic suspension bearing structure. Background Art

[0002] The magnetic bearing structure is a new type of high-performance bearing. Compared with traditional ball bearings, sliding bearings and oil film bearings, the magnetic bearing structure has no mechanical contact, the rotor can reach a very high operating speed, and has the advantages of low mechanical wear, low energy consumption, low noise, long life, no need for lubrication, and no oil pollution. It is particularly suitable for special environments such as high speed, vacuum, and ultra-clean. It can be widely used in mechanical processing, turbomachinery, aerospace, vacuum technology, rotor dynamics characteristics identification and testing, and other fields. It is recognized as a very promising new bearing.

[0003] With the rapid development of the industrial industry, the performance requirements of industrial equipment for magnetic bearing structures (especially those used in long-span magnetic bearing motor rotors) are constantly increasing. In the laboratory, we need to set up a magnetic bearing structure model and conduct research experiments on it.

[0004] During the experiment, in order to facilitate observation, the magnetic bearing structure is not equipped with a shell and is directly exposed to the air. We observed that when the magnetic bearing structure is operating normally or short-circuited or blocked, the coil outside the stator will be subjected to mechanical vibration and cannot be tightly wrapped around the stator. The loose coil will affect the experimental results of the magnetic bearing structure. In order to solve the above problem, the coil is usually fixed with a binding strap. However, traditional binding straps cannot be adjusted repeatedly, and will cause damage to the coil if tied too tightly. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a magnetic bearing structure, which has the advantages of firmly fixing the coil and reducing and not causing damage to the coil.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a magnetic suspension bearing structure, comprising a transversely arranged rotating shaft and a rotor nested outside the rotating shaft and coaxially fixed with the rotating shaft, wherein a stator core adapted to the rotor is nested outside the rotor, and a plurality of evenly arranged stator teeth are radially protruded inwardly on one side of the stator core facing the rotor, and the plurality of stator teeth are arranged at intervals along the circumference of the stator, and a coil is wound around each of the stator teeth, and each of the coils is provided with a connecting component for reducing the possibility of the coil loosening and causing displacement to affect the working efficiency.

[0007] By adopting the above technical solution and setting a connecting component, the coil is protected and limited, which reduces the possibility of the coil loosening, deforming, and causing displacement to affect the work efficiency, thereby improving the stability and reliability of the coil.

[0008] Preferably, the connecting component includes a strap that passes through the upper and lower ends of the coil, and the two ends of the strap are fixed outside the coil through an adjustable component and are detachably fixedly connected to the coil.

[0009] Preferably, the adjustable component includes a connecting buckle arranged at one end of the strap, the connecting buckle is a square frame structure, a partition is fixed in the middle position of the connecting buckle, the inner cavity of the connecting buckle is divided into slot A and slot B by the partition, and one end of the strap is sleeved outside the partition and movably connected to the partition.

[0010] Preferably, a plurality of card slots are provided on one side of the strap, and the plurality of card slots are arranged in an array along the long side of the strap. A rocker arm is integrated with the side of the B movable slot facing the card slot, and the rocker arm is elastic. An end of the rocker arm away from the connecting buckle is integrated with a clamping head adapted to the card slot.

[0011] Preferably, the coil is also provided with a protective sheet covering the coil, and the protective sheet is connected to the connecting buckle via a mounting assembly.

[0012] Preferably, the four end corners of the connecting buckle away from the strap are integrated with connecting rods, the mounting assembly includes a mounting plate fixed to the connecting rod, the mounting plate is fixed to the connecting buckle through the connecting rod, and the protective plate is connected to the mounting plate through a plug-in assembly.

[0013] Preferably, the plug-in assembly includes an I-shaped support rod integrally formed with the side of the mounting plate facing away from the connecting rod, the protective plate is provided with a mounting groove, and the protective plate is nested outside the I-shaped support rod through the mounting groove and is clamped and fixed to the I-shaped support rod.

[0014] Preferably, both ends of the I-shaped support rod are integrated with arc-shaped pressure rods, the pressure rods are elastic, and the pressure rods are arranged obliquely.

[0015] Preferably, the straps, connecting buckles, swing rods, clamps, connecting rods, mounting plates, protective plates, pressure rods and I-shaped support rods are all made of nylon.

[0016] The beneficial effects of the present invention are as follows: both ends of the strap pass through the coil, the end of the strap away from the connecting buckle bypasses the coil and passes through the A movable groove to pass through the connecting buckle, the strap is tightened until the strap fixes the coil, and then the strap is rotated and passes through the B movable groove to pass through the connecting buckle, the tightness of the strap can be adjusted as needed, and the tightness of the strap can be adjusted multiple times as needed, which reduces costs and reduces the possibility of the strap damaging the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 It is a schematic diagram of the overall left side structure of this embodiment; Figure 3 For this embodiment Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the structure of the card slot in this embodiment; Figure 5 This is a schematic diagram of the structure of the installation slot in this embodiment; Figure 6 It is a schematic diagram of the structure of the clamping head according to the present embodiment.

[0019] Description of reference numerals: In the figure: 1. base; 2. support seat; 3. motor; 4. A magnetic bearing structure; 5. B magnetic bearing structure; 6. rotating shaft; 7. rotor; 8. stator core; 9. stator teeth; 10. arc-shaped protrusion; 11. insulating material; 12. binding strap; 13. connecting buckle; 14. partition; 15. A slot; 16. B slot; 17. card slot; 18. card head; 19. protective sheet; 20. connecting rod; 21. mounting sheet; 22. I-shaped support rod; 23. pressure rod; 24. coil; 25. mounting groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] A magnetic bearing structure, such as Figure 1-6, including a base 1, on which are provided two support seats 2 and a motor 3 arranged in sequence along the long side direction of the base 1, and the two support seats 2 are respectively provided with an A magnetic suspension bearing structure 4 and a B magnetic suspension bearing structure 5, the structures of the A magnetic suspension bearing structure 4 and the B magnetic suspension bearing structure 5 are the same, the A magnetic suspension bearing structure 4, the B magnetic suspension bearing structure 5 and the motor 3 are connected by a rotating shaft 6 that penetrates the A magnetic suspension bearing structure 4 and the B magnetic suspension bearing structure 5, which is an existing structure.

[0022] like Figure 1 and Figure 2 A magnetic bearing structure 4 includes a rotor 7 nested outside the rotating shaft 6 and coaxially fixed with the rotating shaft 6, a stator core 8 adapted thereto is nested outside the rotor 7, the stator core 8 has a plurality of evenly arranged stator teeth 9 protruding radially inwardly on the side facing the rotor 7, the plurality of stator teeth 9 are arranged at intervals along the circumferential direction of the stator, an arc-shaped protrusion 10 is integrated at one end of the stator teeth 9 facing the rotor 7, the length of the arc-shaped protrusion 10 is greater than the width of the stator teeth 9, and the arc-shaped protrusion 10 is close to the rotor 7.

[0023] like Figure 1 and Figure 2 and Figure 3 An insulating material 11 with a U-shaped cross section is placed between every two adjacent stator teeth 9 and the arc-shaped protrusion 10. The insulating material 11 can be insulating paper. By providing the insulating material 11, the coil 24 is protected and the possibility of electrical insulation damage is reduced.

[0024] like Figure 1 and Figure 2 and Figure 3 A coil 24 is wound around the outside of each stator tooth 9. The coil 24 is wound around the outside of two adjacent insulating materials 11. The arc-shaped protrusion 10 acts as an anti-dropping component to reduce the possibility of the coil 24 falling off the stator tooth 9. In order to reduce the possibility of the coil 24 deforming and displacing and affecting the working efficiency, a connecting component is provided on each coil 24.

[0025] like Figure 2 and Figure 4 The connecting component includes a strap 12 that passes through the upper and lower ends of the coil 24, and the two ends of the strap 12 are fixed to the outside of the coil 24 through an adjustable component and are detachably fixedly connected to the coil 24; like Figure 4 and Figure 5 and Figure 6The adjustable component includes a connecting buckle 13 arranged at one end of the strap 12. The connecting buckle 13 is a square frame structure. A partition 14 is fixed in the middle position of the connecting buckle 13. The inner cavity of the connecting buckle 13 is divided into an A slot 15 and a B slot 16 by the partition 14. One end of the strap 12 is sleeved outside the partition 14 and movably connected to the partition 14, and the other end bypasses the coil 24 and passes through the connecting buckle 13 through the A slot 15, and then passes through the connecting buckle 13 in the opposite direction through the B slot 16. The end of the strap 12 away from the partition 14 passes through the connecting buckle 13 twice to facilitate the fixed connection between the strap 12 and the coil 24, and the tightness of the strap 12 can be repeatedly adjusted according to the size of the coil 24 without damaging the strap 12.

[0026] like Figure 4 and Figure 5 and Figure 6 In order to improve the stability of the connection between the strap 12 and the connecting buckle 13, a plurality of card slots 17 are opened on one side of the strap 12. The card slots 17 are arranged in an array along the long side of the strap 12. A swing rod is integrated with the side of the B slot 16 facing the card slot 17. The swing rod is elastic, and a clamping head 18 adapted to the card slot 17 is integrated at the end of the swing rod away from the connecting buckle 13. The strap 12 and the B slot 16 are detachably fixedly connected through the card slot 17 and the clamping head 18.

[0027] like Figure 4 and Figure 5 and Figure 6 In the initial state, the rocker arm provides elastic potential energy so that the clamp head 18 is clamped into the clamping slot 17. The clamp head 18 and the clamping slot 17 cooperate with each other to facilitate the fixed connection between the connecting buckle 13 and the strap 12, thereby further improving the stability of the connection between the strap 12 and the connecting buckle 13.

[0028] like Figure 4 and Figure 5 and Figure 6 In order to reduce the possibility that the staff may accidentally touch the coil 24 and affect the experimental results during the experiment, a protective sheet 19 covering the coil 24 is also provided on the coil 24, and the protective sheet 19 is connected to the connecting buckle 13 through an installation component.

[0029] like Figure 4 and Figure 5 and Figure 6The four end corners of the connecting buckle 13 away from the strap 12 are integrated with a connecting rod 20, and the installation assembly includes a mounting plate 21 fixed to the connecting rod 20. The size of the protective plate 19 is much larger than the size of the mounting plate 21. The side of the mounting plate 21 away from the connecting rod 20 is integrated with an I-shaped support rod 22. Both ends of the I-shaped support rod 22 are integrated with an arc-shaped pressure rod 23. The pressure rod 23 is elastic and arranged obliquely. The pressure rod 23 is covered with a protective sheet 19 for protecting the coil 24. The protective sheet 19 is provided with a mounting groove 25. The protective sheet 19 is installed The mounting groove 25 is nested outside the I-shaped support rod 22 and the pressure rod 23. When the protective sheet 19 moves onto the pressure rod 23, the pressure rod 23 is pressed and tilted. When the protective sheet 19 moves to a point where it is not in contact with the pressure rod 23, the pressure rod 23 rebounds, pressing the protective sheet 19 against the mounting sheet 21, thereby improving the connection stability between the protective sheet 19 and the mounting sheet 21 and protecting the coil 24 from being touched by the staff. The strap 12, the connecting buckle 13, the swing rod, the clamp 18, the connecting rod 20, the mounting sheet 21, the protective sheet 19, the pressure rod 23 and the I-shaped support rod 22 are all made of nylon. , which does not affect the normal use of the device. .

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A magnetic bearing structure, characterized in that: The invention comprises a transversely arranged rotating shaft (6) and a rotor (7) nested outside the rotating shaft (6) and coaxially fixed with the rotating shaft (6); a stator core (8) adapted thereto is nested outside the rotor (7); a plurality of evenly arranged stator teeth (9) protrude radially inwardly on a side of the stator core (8) facing the rotor (7); the plurality of stator teeth (9) are arranged at intervals along the circumference of the stator; a coil (24) is wound around the outside of each of the stator teeth (9); and each of the coils (24) is provided with a connecting component for reducing the possibility of the coil (24) being loosened and displaced to affect the working efficiency.

2. A magnetic bearing structure according to claim 1, characterized in that: The connection component comprises a binding strap (12) that passes through the upper and lower ends of the coil (24); the two ends of the binding strap (12) are fixed to the outside of the coil (24) through an adjustable component and are detachably fixedly connected to the coil (24).

3. A magnetic bearing structure according to claim 2, characterized in that: The adjustable component comprises a connecting buckle (13) arranged at one end of the binding strap (12); the connecting buckle (13) is a square frame structure; a partition (14) is fixed at the middle position of the connecting buckle (13); the inner cavity of the connecting buckle (13) is divided into an A slot (15) and a B slot (16) by the partition (14); one end of the binding strap (12) is sleeved outside the partition (14) and is movably connected to the partition (14).

4. A magnetic bearing structure according to claim 3, characterized in that: A plurality of card slots (17) are provided on one side of the binding strap (12), and the card slots (17) are arranged in an array along the long side of the binding strap (12); a swing rod is integrated with the side of the B slot (16) facing the card slot (17); the swing rod is elastic, and a clamping head (18) adapted to the card slot (17) is integrated with the end of the swing rod away from the connecting buckle (13).

5. A magnetic bearing structure as claimed in claim 3, characterized in that: The coil (24) is also provided with a protective sheet (19) covering the coil (24), and the protective sheet (19) is connected to the connecting buckle (13) via a mounting assembly.

6. A magnetic bearing structure according to claim 5, characterized in that: Connecting rods (20) are integrated at the four end corners of the connecting buckle (13) on the side facing away from the binding belt (12); the mounting assembly comprises a mounting plate (21) fixed to the connecting rod (20); the mounting plate (21) is fixed to the connecting buckle (13) via the connecting rod (20); and the protective plate (19) is connected to the mounting plate (21) via a plug-in assembly.

7. A magnetic bearing structure according to claim 6, characterized in that: The plug-in assembly comprises an I-shaped support rod (22) integrally formed with a side of the mounting plate (21) facing away from the connecting rod (20), a mounting groove (25) is provided on the protective plate (19), and the protective plate (19) is nested outside the I-shaped support rod (22) through the mounting groove (25) and is fixedly connected to the I-shaped support rod (22).

8. A magnetic bearing structure according to claim 7, characterized in that: Both ends of the I-shaped support rod (22) are integrated with arc-shaped pressure rods (23), the pressure rod (23) is elastic, and the pressure rod (23) is arranged obliquely.

9. A magnetic bearing structure according to claim 8, characterized in that: The binding strap (12), the connecting buckle (13), the swing rod, the clamp (18), the connecting rod (20), the mounting plate (21), the protective plate (19), the pressure rod (23) and the I-shaped support rod (22) are all made of nylon.

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