Split type magnetic suspension bearing

Abstract

The utility model discloses a split type magnetic suspension bearing which comprises a mounting sleeve, a plurality of iron cores which are uniformly distributed are arranged on the inner wall of the mounting sleeve, the iron cores are connected with the mounting sleeve through connecting assemblies, magnetic poles which are symmetrically arranged are arranged on one sides of the iron cores, coils are sleeved on the outer walls of the magnetic poles, and a shielding sleeve is sleeved on the outer wall of the mounting sleeve. The beneficial effects are that the shielding sleeve can prevent the interference of an external magnetic field, improves the anti-interference performance, facilitates the rapid disassembly and assembly of the iron core through the connection assembly, improves the disassembly and assembly efficiency, and facilitates the later disassembly and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension bearings, in particular to a split type magnetic suspension bearing. Background Art

[0002] Magnetic bearings use magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator. The principle is that the magnetic induction line is perpendicular to the magnetic levitation line, and the shaft core is parallel to the magnetic levitation line, so the weight of the rotor is fixed on the running track, and the shaft core, which is almost unloaded, is supported in the direction opposite to the magnetic levitation line, so that the entire rotor is suspended in the air and fixed on the running track.

[0003] According to a magnetic levitation bearing and a magnetic levitation high-speed motor disclosed in Chinese patent CN202320886944.8, the application includes two or more electromagnet modules arranged in the bearing sleeve along the circumferential direction thereof, the iron core of the electromagnet module includes a yoke and an even number of magnetic poles located on the inner side of the yoke and arranged at intervals, coils are sleeved on the magnetic poles, and the even number of coils are connected in series; the split structure makes the electromagnet modules independent of each other, which can effectively reduce the phenomenon of magnetic cross-talk and magnetic leakage during operation, and the position control of the motor rotor is more accurate; in the manufacturing process of the magnetic levitation bearing, the utilization rate of the raw materials of the iron core can be greatly improved, the cost of raw materials can be reduced, and the coils can be easily wound on the magnetic poles of the non-closed iron core, which is convenient for manufacturing and assembly; the subsequent maintenance cost is low, the existing magnetic levitation bearing lacks a shielding structure on the outside and is easily interfered by the external magnetic field, and the iron core of the existing magnetic levitation bearing cannot be quickly disassembled and assembled with the mounting sleeve, affecting the disassembly and assembly efficiency.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a split magnetic suspension bearing to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A split magnetic suspension bearing comprises a mounting sleeve, wherein the inner wall of the mounting sleeve is provided with a plurality of evenly distributed iron cores, the iron cores are connected to the mounting sleeve via a connecting assembly, one side of the iron cores is provided with symmetrically arranged magnetic poles, the outer wall of the magnetic poles is provided with a coil, and the outer wall of the mounting sleeve is provided with a shielding sleeve.

[0008] Preferably, the shielding sleeve is connected to the mounting sleeve via bolts, and bolt holes matching the bolts are provided on the mounting sleeve and the shielding sleeve.

[0009] Preferably, the outer wall of the mounting sleeve is provided with a plurality of evenly distributed positioning posts, and the inner wall of the shielding sleeve is provided with positioning grooves matching the positioning posts.

[0010] Preferably, the connecting assembly includes a T-shaped mounting block provided on one side of the iron core, and the inner wall of the mounting sleeve is provided with a T-shaped slot matching the T-shaped mounting block.

[0011] Preferably, an adjustment slot is provided in the T-shaped mounting block, a rotating shaft is provided in the adjusting slot, a gear is fixedly sleeved on the outer wall of the rotating shaft, L-shaped sliding rods are respectively provided on both sides of the gear, two groups of L-shaped sliding rods are provided with a tooth saw meshing with the gear on one side close to the gear, two groups of L-shaped sliding rods are provided with a limit rod on the other side away from the gear, one side of the two groups of limit rods extends outside the adjusting slot, a limit slot matching the limit rod is provided on the mounting sleeve, and a spring is sleeved in the adjusting slot and on the outer wall of the two groups of limit rods.

[0012] Preferably, the top end of the rotating shaft extends outside the adjusting slot and is connected to a knob, and an outer wall of the knob is covered with a non-slip rubber sleeve.

[0013] Preferably, the L-shaped sliding rod is connected to the T-shaped mounting block via the spring.

[0014] Preferably, a pull ring is provided at the top of the T-shaped mounting block.

[0015] The beneficial effects of the utility model are as follows: by arranging the shielding sleeve, the external magnetic field can be prevented from interfering with it, thereby improving its anti-interference performance; by arranging the connecting assembly, the iron core can be quickly disassembled and assembled, thereby improving the disassembly and assembly efficiency and facilitating later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a split magnetic suspension bearing according to an embodiment of the utility model;

[0018] Figure 2 This is a top view of a split magnetic bearing according to an embodiment of the utility model;

[0019] Figure 3 This is a bottom view of a split magnetic bearing according to an embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a shielding sleeve in a split magnetic suspension bearing according to an embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a mounting sleeve in a split-type magnetic suspension bearing according to an embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of an iron core in a split magnetic suspension bearing according to an embodiment of the utility model;

[0023] Figure 7 It is a cross-sectional view of a T-shaped mounting block in a split magnetic bearing according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Mounting sleeve; 2. Iron core; 3. Magnetic pole; 4. Coil; 5. Shielding sleeve; 6. Bolt; 7. Positioning column; 8. Positioning slot; 9. T-type mounting block; 10. T-type slot; 11. Adjustment slot; 12. Rotating shaft; 13. Gear; 14. L-type slide bar; 15. Tooth saw; 16. Limit rod; 17. Spring; 18. Knob; 19. Pull ring. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the utility model, a split magnetic suspension bearing is provided.

[0028] Embodiment 1;

[0029] like Figure 1-7 As shown, according to the embodiment of the utility model, the split magnetic bearing includes a mounting sleeve 1, the inner wall of the mounting sleeve 1 is provided with a plurality of evenly distributed iron cores 2, the iron cores 2 are connected to the mounting sleeve 1 through a connecting assembly, one side of the iron core 2 is provided with symmetrically arranged magnetic poles 3, the outer wall of the magnetic pole 3 is provided with a coil 4, and the outer wall of the mounting sleeve 1 is provided with a shielding sleeve 5.

[0030] Embodiment 2:

[0031] like Figure 1-7As shown, according to the embodiment of the utility model, the split-type magnetic bearing comprises a mounting sleeve 1, the inner wall of the mounting sleeve 1 is provided with a plurality of evenly distributed iron cores 2, the iron cores 2 are connected to the mounting sleeve 1 through a connecting assembly, one side of the iron core 2 is provided with symmetrically arranged magnetic poles 3, the outer wall of the magnetic poles 3 is provided with a coil 4, and the outer wall of the mounting sleeve 1 is provided with a shielding sleeve 5. The shielding sleeve 5 is connected to the mounting sleeve 1 through a bolt 6, and the mounting sleeve 1 and the shielding sleeve 5 are both provided with bolt holes matching the bolts 6. The outer wall of the mounting sleeve 1 is provided with a plurality of evenly distributed positioning columns 7, and the inner wall of the shielding sleeve 5 is provided with a positioning groove 8 matching the positioning column 7. When installing the shielding sleeve 5, align the positioning columns 7 on the mounting sleeve 1 with the positioning grooves 8 on the shielding sleeve 5, then put the mounting sleeve 1 into the shielding sleeve 5, and then tighten the bolts 6 to fix the mounting sleeve 1 and the shielding sleeve 5. By providing the shielding sleeve, it is possible to prevent the external magnetic field from interfering with it, thereby improving its anti-interference performance.

[0032] Embodiment three;

[0033] like Figure 1-7As shown, the split magnetic bearing according to the embodiment of the utility model comprises a mounting sleeve 1, the inner wall of the mounting sleeve 1 is provided with a plurality of evenly distributed iron cores 2, the iron cores 2 are connected to the mounting sleeve 1 through a connecting assembly, one side of the iron core 2 is provided with symmetrically arranged magnetic poles 3, the outer wall of the magnetic pole 3 is provided with a coil 4, and the outer wall of the mounting sleeve 1 is provided with a shielding sleeve 5. The connecting assembly comprises a T-shaped mounting block 9 provided on one side of the iron core 2, and the inner wall of the mounting sleeve 1 is provided with a T-shaped slot 10 matching the T-shaped mounting block 9. The T-shaped mounting block 9 is provided with an adjustment slot 11, a rotating shaft 12 is provided in the adjustment slot 11, a gear 13 is fixedly sleeved on the outer wall of the rotating shaft 12, L-shaped slide bars 14 are provided on both sides of the gear 13, two groups of L-shaped slide bars 14 are provided with tooth saws 15 meshing with the gear 13 on one side close to the gear 13, and two groups of L-shaped slide bars 14 are provided with stopper bars 16 on the other side away from the gear 13, and one side of the two groups of stopper bars 16 extends to the outside of the adjustment slot 11, and a stopper slot matching the stopper bars 16 is provided on the mounting sleeve 1, and springs 17 are sleeved in the adjustment slot 11 and on the outer walls of the two groups of stopper bars 16. The top end of the rotating shaft 12 extends to the outside of the adjustment slot 11 and is connected to a knob 18, and the outer wall of the knob 18 is sleeved with an anti-slip rubber sleeve. The L-shaped slide bar 14 is connected to the T-shaped mounting block 9 through the spring 17. A pull ring 19 is provided on the top end of the T-shaped mounting block 9. When the iron core 2 needs to be replaced, the personnel turns the knob 18, the knob 18 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the gear 13 to rotate, the gear 13 drives the two sets of L-shaped slide bars 14 to move in the opposite direction, and the L-shaped slide bar 14 drives the limiting rod 16 to disengage from the limiting groove on the iron core 2. At the same time, the personnel pulls the pull ring 19 upward to pull the T-shaped mounting block 9 out of the T-shaped groove 10. By setting up the connecting assembly, it is convenient to quickly disassemble and assemble the iron core, improve the disassembly and assembly efficiency, and facilitate later disassembly and maintenance.

[0034] In actual application, when installing the shielding sleeve 5, align the positioning column 7 on the mounting sleeve 1 with the positioning groove 8 on the shielding sleeve 5, then put the mounting sleeve 1 into the shielding sleeve 5, and then tighten the bolt 6 to fix the mounting sleeve 1 and the shielding sleeve 5. By setting the shielding sleeve, it is possible to prevent external magnetic fields from interfering with it, thereby improving its anti-interference performance; when the iron core 2 needs to be replaced, the personnel turns the knob 18, the knob 18 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the gear 13 to rotate, the gear 13 drives the two sets of L-shaped slide bars 14 to move in the opposite direction, the L-shaped slide bar 14 drives the limit rod 16 to disengage from the limit groove on the iron core 2, and at the same time, the personnel pulls the pull ring 19 upwards to pull the T-shaped mounting block 9 out of the T-shaped groove 10. By setting the connecting assembly, it is convenient to quickly disassemble and assemble the iron core, improve the disassembly and assembly efficiency, and facilitate later disassembly and maintenance.

[0035] To sum up, with the help of the above-mentioned technical scheme of the utility model, by setting a shielding sleeve, it is possible to prevent external magnetic fields from interfering with it and improve its anti-interference performance. By setting a connecting component, it is convenient to quickly disassemble and assemble the iron core, improve the disassembly and assembly efficiency, and facilitate later disassembly and maintenance.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A split magnetic bearing, characterized in that: The invention comprises a mounting sleeve (1), wherein the inner wall of the mounting sleeve (1) is provided with a plurality of evenly distributed iron cores (2), the iron cores (2) are connected to the mounting sleeve (1) via a connecting assembly, one side of the iron core (2) is provided with symmetrically arranged magnetic poles (3), the outer wall of the magnetic poles (3) is provided with a coil (4), and the outer wall of the mounting sleeve (1) is provided with a shielding sleeve (5).

2. A split magnetic bearing according to claim 1, characterized in that: The shielding sleeve (5) is connected to the mounting sleeve (1) via bolts (6); bolt holes matching the bolts (6) are provided on the mounting sleeve (1) and the shielding sleeve (5).

3. A split magnetic bearing according to claim 1, characterized in that: The outer wall of the installation sleeve (1) is provided with a plurality of evenly distributed positioning columns (7), and the inner wall of the shielding sleeve (5) is provided with positioning grooves (8) matching the positioning columns (7).

4. A split magnetic bearing according to claim 1, characterized in that: The connection assembly comprises a T-shaped mounting block (9) provided on one side of the iron core (2), and the inner wall of the mounting sleeve (1) is provided with a T-shaped slot (10) matching the T-shaped mounting block (9).

5. A split magnetic bearing according to claim 4, characterized in that: The T-shaped mounting block (9) is provided with an adjusting groove (11), a rotating shaft (12) is provided in the adjusting groove (11), a gear (13) is fixedly sleeved on the outer wall of the rotating shaft (12), L-shaped sliding rods (14) are respectively provided on both sides of the gear (13), a tooth saw (15) meshing with the gear (13) is provided on one side of the two groups of L-shaped sliding rods (14) close to the gear (13), a limiting rod (16) is provided on one side of the two groups of L-shaped sliding rods (14) away from the gear (13), one side of the two groups of limiting rods (16) extends outside the adjusting groove (11), a limiting groove matching the limiting rod (16) is provided on the mounting sleeve (1), and a spring (17) is sleeved in the adjusting groove (11) and on the outer wall of the two groups of limiting rods (16).

6. A split magnetic bearing according to claim 5, characterized in that: The top end of the rotating shaft (12) extends to the outside of the adjusting slot (11) and is connected to the knob (18), and the outer wall of the knob (18) is provided with an anti-slip rubber sleeve.

7. A split magnetic bearing according to claim 5, characterized in that: The L-shaped sliding rod (14) is connected to the T-shaped mounting block (9) via the spring (17).

8. The split magnetic bearing according to claim 4, characterized in that: A pull ring (19) is provided at the top end of the T-shaped mounting block (9).

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