A corrosion-resistant thrust stator structure

Abstract

The present invention belongs to the technical field of motor stators, and specifically is an anti-corrosion thrust stator structure, comprising: a shielding ring, a top end of the shielding ring is provided with an annular storage groove; a magnetic U-shaped seat is arranged in the storage groove, and the bottom end of the magnetic U-shaped seat is provided with an annular groove; a stator winding is arranged in the groove; a mounting plate is arranged on the top of the shielding ring; the thrust stator is completely wrapped therein by the corrosion-resistant stainless steel shielding ring and the mounting plate, so that the stator winding and the magnetic U-shaped seat are isolated from corrosive gases and liquids, thereby protecting the stator winding and the magnetic U-shaped seat from corrosion and extending the service life of the stator; by setting the slot width of the storage groove to be larger than the width of the magnetic U-shaped seat, the magnetic U-shaped seat can be adjusted and positioned and fastened in combination with a positioning component, which not only facilitates the assembly of the magnetic U-shaped seat, but also facilitates the removal of the magnetic U-shaped seat, thereby facilitating subsequent maintenance and replacement work.

Description

Technical Field

[0001] The invention belongs to the field of motor stators, in particular to an anti-corrosion thrust stator structure. Background Art

[0002] At present, magnetic levitation high-speed motors are needed in more and more occasions, and motors are increasingly used in anti-corrosion heavy industrial occasions. The thrust stator in the motor is an important component, which is generally composed of stator windings, iron cores and other structures.

[0003] A patent document with publication number CN116914971A discloses a motor stator, a method for manufacturing a motor stator and a motor, wherein the motor stator includes a stator core, a stator winding and a covering layer, the stator core includes a plurality of winding slots spaced apart along its circumference, the stator winding includes a plurality of phase windings, each phase winding is inserted into a winding slot corresponding to itself, the phase windings and each phase winding and the slot wall of the winding slot are spaced apart by an insulating layer, and the covering layer covers the stator core and the plurality of phase windings.

[0004] The above scheme still has some problems. Although a coating layer is arranged on the outside of the stator core and the stator winding, and the coating layer is formed by injection molding, this conventional injection molding coating structure is prone to problems such as cracks after long-term work, and cannot effectively prevent corrosive gases or liquids from entering the stator to corrode the winding coils, causing damage to the winding coils and causing motor failures. In severe cases, it may lead to production safety accidents.

[0005] To this end, the present invention provides an anti-corrosion thrust stator structure. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the anti-corrosion thrust stator structure described in the present invention includes: a shielding ring, the top of the shielding ring is provided with an annular storage groove; a magnetic U-shaped seat arranged in the storage groove, the bottom end of the magnetic U-shaped seat is provided with an annular groove; a stator winding arranged in the groove; an epoxy insulation layer for sealing the bottom end opening of the groove; a mounting plate arranged on the top of the shielding ring, the mounting plate seals the top end opening of the storage groove, and the shielding ring and the mounting plate are both provided with threading holes, and the threading holes are connected to the groove.

[0008] Preferably, a sealing cover plate for sealing the threading hole is provided on the mounting plate.

[0009] Preferably, an annular boss for limiting the mounting plate is provided at the top end of the shielding ring, the mounting plate is sleeved on the outside of the boss, and the mounting plate and the shielding ring have the same outer diameter.

[0010] Preferably, the connection between the mounting plate and the shielding ring is welded and sealed.

[0011] Preferably, a gap is left between the side wall of the magnetic U-shaped seat and the side wall of the storage groove, and a positioning component is provided inside the shielding ring;

[0012] The positioning assembly includes: a plurality of positioning plates evenly distributed on the outer side wall of the storage slot; a plurality of guide seats arranged inside the storage slot; a transmission member movably arranged inside the guide seat, the lower end of the transmission member is located below the magnetic U-shaped seat, and the upper end of the transmission member is movably connected to the positioning plate.

[0013] Preferably, both ends of the transmission member are provided with abutment rods, the cross section of the abutment rods is circular, and the positioning plate is provided with a movable groove corresponding to the abutment rod at the upper end.

[0014] Preferably, the transmission member is in an arc shape, both ends of the transmission member extend to the outside of the guide seat respectively, and the center of gravity of the transmission member is located in the upper half.

[0015] Preferably, an arc-shaped plate corresponding to the outer side wall of the magnetic U-shaped seat is provided at the end of the positioning plate.

[0016] Preferably, the positioning assembly further comprises a pressure plate slidably arranged on the inner bottom wall of the storage slot, the abutment rod at the lower end is movably connected to the pressure plate, and a movable groove 2 corresponding to the abutment rod is provided at the bottom end of the pressure plate.

[0017] Preferably, the positioning assembly further comprises a fastening ring arranged at the bottom end of the mounting plate, the fastening ring is located between the inner side wall of the shielding ring and the inner side wall of the storage groove, and a slope is provided at the bottom end of the fastening ring.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The anti-corrosion thrust stator structure described in the present invention completely wraps the thrust stator therein with a corrosion-resistant stainless steel shielding ring and a mounting plate, so that the stator winding and the magnetic U-shaped seat are isolated from corrosive gases and liquids, thereby protecting the stator winding and the magnetic U-shaped seat from corrosion and extending the service life of the stator.

[0020] 2. The anti-corrosion thrust stator structure described in the present invention arranges a positioning component in the shielding ring and utilizes the self-gravity of the transmission part. After the magnetic U-shaped seat is placed in the storage groove, the magnetic U-shaped seat squeezes the transmission part to slide, and the transmission part drives the positioning plate to move, so that the positioning plate moves and presses against the outer wall of the magnetic U-shaped seat, thereby fixing the magnetic U-shaped seat. This not only improves the firmness of the magnetic U-shaped seat and prevents the magnetic U-shaped seat from shaking horizontally, but also multiple positioning plates also play the function of adjusting the position of the magnetic U-shaped seat, so that the magnetic U-shaped seat is concentric with the shielding ring. There is no need to manually control the movement of the transmission part and the positioning plate, and it is easy to use.

[0021] 3. The anti-corrosion thrust stator structure described in the present invention, by setting the slot width of the storage slot to be larger than the width of the magnetic U-shaped seat, can adjust the position and position and tighten the magnetic U-shaped seat in conjunction with the positioning component, which not only facilitates the assembly of the magnetic U-shaped seat, but also facilitates the removal of the magnetic U-shaped seat, thereby facilitating subsequent maintenance and replacement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of the first embodiment of the present invention;

[0025] Figure 3 is an exploded view of the first embodiment of the present invention;

[0026] Figure 4 This is a bottom view of the magnetic U-shaped seat;

[0027] Figure 5 is a stereoscopic diagram of a shielding ring and a positioning assembly according to a second embodiment of the present invention;

[0028] Figure 6 is a cross-sectional view of a second embodiment of the present invention;

[0029] Figure 7 It is an exploded view of the shielding ring and positioning assembly;

[0030] Figure 8 This is the bottom view of the mounting plate and the pressure plate;

[0031] Fig. 9 This is an exploded view of the positioning plate, transmission parts and guide seat;

[0032] In the figure: 1. shielding ring; 11. storage groove; 12. annular boss; 2. magnetic U-shaped seat; 21. groove; 3. stator winding; 4. epoxy insulation layer; 5. mounting plate; 51. thrust stator mounting hole; 52. sealing cover plate; 53. cover plate mounting hole; 6. threading hole; 7. positioning assembly; 71. positioning plate; 711. movable groove one; 72. guide seat; 73. transmission member; 74. abutment rod; 75. pressure plate; 751. movable groove two; 76. fastening ring. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1

[0035] like Figure 1-4 As shown, an anti-corrosion thrust stator structure described in an embodiment of the present invention includes: a shielding ring 1, a top end of the shielding ring 1 is provided with an annular storage groove 11; a magnetic U-shaped seat 2 arranged in the storage groove 11, the bottom end of the magnetic U-shaped seat 2 is provided with an annular groove 21; a stator winding 3 arranged in the groove 21; an epoxy insulation layer 4 for sealing the bottom end opening of the groove 21; a mounting plate 5 arranged on the top of the shielding ring 1, the mounting plate 5 seals the top end opening of the storage groove 11, and the shielding ring 1 and the mounting plate 5 are both provided with threading holes 6, and the threading holes 6 are connected to the groove 21.

[0036] Specifically, the mounting plate 5 and the shielding ring 1 are preferably made of, but not limited to, 304 stainless steel. A thrust stator mounting hole 51 is provided on the top of the mounting plate 5 .

[0037] The installation of the thrust stator structure is as follows: first, install the stator winding 3 into the groove 21 of the magnetic U-shaped seat 2, and fix it through the epoxy insulation layer 4 to ensure that the insulation withstand voltage of the stator winding 3 passes the test and the stator winding 3 is firmly fixed; the lead wire passes through the threading hole 6; then, install the assembled magnetic U-shaped seat 2 together with the stator winding 3 into the storage groove 11 of the shielding ring 1; secondly, install the mounting plate 5 on the shielding ring 1 to form a whole; then, weld the connection between the mounting plate 5 and the shielding ring 1 to effectively combine them into a whole, and then the installation size of the thrust stator can be controlled by lathing.

[0038] The thrust stator structure completely wraps the thrust stator with corrosion-resistant 304 stainless steel material, so that the stator winding 3 and the magnetic U-shaped seat are isolated from corrosive gases and liquids, thereby protecting the stator winding 3 and the magnetic U-shaped seat 2 from corrosion and extending the service life of the stator.

[0039] It should be noted that in Figure 3In the figure, the width between the inner and outer circles of the magnetic U-shaped seat 2 is L1, and the slot width of the storage slot 11 is L2. When assembling the thrust stator structure, in order to prevent the magnetic U-shaped seat 2 from shaking in the storage slot 11, a design in which L2 is slightly larger than L1 can be adopted. After the magnetic U-shaped seat 2 is placed in the storage slot 11, the inner and outer circles of the magnetic U-shaped seat 2 are tightly attached to the inner and outer side walls of the storage slot 11 respectively, thereby preventing the magnetic U-shaped seat 2 from shaking.

[0040] like Figure 1-2 As shown, a sealing cover plate 52 is provided on the mounting plate 5 for sealing the threading hole 6 .

[0041] Specifically, a cover plate mounting hole 53 corresponding to the sealing cover plate 52 is provided on the top of the mounting plate 5 .

[0042] like Figure 2-3 As shown, the top of the shielding ring 1 is provided with an annular boss 12 for limiting the mounting plate 5 , and the mounting plate 5 is sleeved on the outside of the boss. The mounting plate 5 and the shielding ring 1 have the same outer diameter.

[0043] Specifically, Figure 2 As shown, the height of the inner circle of the shielding ring 1 is higher than that of the outer circle, and the raised portion of the inner circle of the shielding ring 1 is an annular boss 12 .

[0044] like Figure 2 As shown, the connection between the mounting plate 5 and the shielding ring 1 is welded and sealed.

[0045] Specifically, the assembled parts are laser welded at the welding position, such as Figure 2 As shown, A and B are welding positions, where the shielding ring 1 and the mounting plate 5 can be welded into a sealed integral structure.

[0046] Embodiment 2

[0047] like Figure 5-9 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a gap is left between the side wall of the magnetic U-shaped seat 2 and the side wall of the storage groove 11, and a positioning assembly 7 is provided inside the shielding ring 1;

[0048] The positioning assembly 7 includes: a plurality of positioning plates 71 evenly distributed on the outer wall of the storage groove 11; a plurality of guide seats 72 arranged inside the storage groove 11; a transmission member 73 movably arranged inside the guide seat 72, the lower end of the transmission member 73 is located below the magnetic U-shaped seat 2, and the upper end of the transmission member 73 is movably connected to the positioning plate 71.

[0049] Specifically, multiple positioning plates 71 are evenly distributed in a ring along the storage groove 11, and the transmission member 73 can slide back and forth in the guide seat 72, and the sliding trajectory is an arc; when assembling the thrust stator structure, a design in which L2 is slightly larger than L1 is adopted. Although it can prevent the magnetic U-shaped seat 2 from shaking, it will also increase the difficulty of placing the magnetic U-shaped seat 2 into the storage groove 11. In order to reduce the difficulty of assembly and further improve the efficiency of assembly work, a positioning component 7 is set inside the shielding ring 1.

[0050] Initially, the spacing between the positioning plate 71 and the inner wall of the storage slot 11 is L3. Before assembly, the positioning plate 71 is attached to the outer wall of the storage slot 11, and L3 is greater than L1, so that the magnetic U-shaped seat 2 can be smoothly placed in the storage slot 11, and the bottom end of the transmission member 73 is in an upward state; after the magnetic U-shaped seat 2 is placed in the storage slot 11, the bottom end of the magnetic U-shaped seat 2 contacts the bottom end of the transmission member 73, and drives the transmission member 73 to slide. Figure 6 In the figure, after the magnetic U-shaped seat 2 moves down, it drives the transmission member 73 to slide clockwise, and the top of the transmission member 73 drives the positioning plate 71 to move, so that the positioning plate 71 abuts against the outer wall of the magnetic U-shaped seat 2, thereby fixing the magnetic U-shaped seat 2, which not only improves the firmness of the magnetic U-shaped seat 2 and prevents the magnetic U-shaped seat 2 from shaking horizontally, but also, the multiple positioning plates 71 also play the function of adjusting the position of the magnetic U-shaped seat 2, so that the magnetic U-shaped seat 2 is concentric with the shielding ring 1; then, after the mounting plate 5 is installed on the shielding ring 1, the mounting plate 5 abuts against the top of the magnetic U-shaped seat 2, which prevents the magnetic U-shaped seat 2 from shaking up and down, thus realizing the function of quickly assembling the magnetic U-shaped seat 2 and ensuring firm assembly.

[0051] In a general thrust stator structure, components such as the shielding ring 1 and the stator winding 3 are tightly assembled with the casing. It is difficult to remove the shielding ring 1 after a problem occurs, and the replacement work is extremely troublesome. During the use of the thrust stator structure, when the stator winding 3 and the magnetic U-shaped seat 2 need to be replaced, after opening the mounting plate 5, since there is a gap between the side wall of the magnetic U-shaped seat 2 and the side wall of the storage slot 11, it is convenient to use a disassembly tool to reach into the gap to remove the magnetic U-shaped seat 2, which is more convenient to use.

[0052] like Figure 6-9 As shown, both ends of the transmission member 73 are provided with abutment rods 74 , the cross section of the abutment rod 74 is circular, and the positioning plate 71 is provided with a movable groove 711 corresponding to the abutment rod 74 at the upper end.

[0053] Specifically, when the transmission member 73 slides back and forth, the positioning plate 71 is driven to move back and forth horizontally through the abutment rod 74 above.

[0054] like Figure 6-9As shown, the transmission member 73 is in an arc shape, and both ends of the transmission member 73 extend to the outside of the guide seat 72 respectively, and the center of gravity of the transmission member 73 is located in the upper half.

[0055] Specifically, initially, the state of the transmission member 73 under the action of its own gravity is as follows: Figure 6 As shown, at this time, the lower abutment rod 74 extends upward, and the upper abutment rod 74 drives the positioning plate 71 close to the outer wall of the storage groove 11; when assembling the magnetic U-shaped seat 2, the magnetic U-shaped seat 2 moves down and squeezes the transmission member 73 to slide clockwise; when replacing the magnetic U-shaped seat 2, after the magnetic U-shaped seat 2 is taken out upward, the transmission member 73 automatically resets under the action of gravity, and there is no need to manually control the movement of the transmission member 73 and the positioning plate 71, which is easy to use.

[0056] like Fig. 9 As shown, the end of the positioning plate 71 is provided with an arc-shaped plate corresponding to the outer side wall of the magnetic conductive U-shaped seat 2.

[0057] Specifically, after the positioning plate 71 abuts against the outer wall of the magnetic U-shaped seat 2, the arc-shaped plate fits with the outer wall of the magnetic U-shaped seat 2, achieving a better positioning effect.

[0058] like Figure 5-8 As shown, the positioning assembly 7 also includes a pressure plate 75 slidably arranged on the inner bottom wall of the storage groove 11, the lower end of the abutment rod 74 is movably connected to the pressure plate 75, and the bottom end of the pressure plate 75 is provided with a movable groove 2 751 corresponding to the abutment rod 74.

[0059] Specifically, the pressure plate 75 can move up and down inside the storage slot 11. After the pressure plate 75 moves up and down, it drives multiple transmission members 73 to slide synchronously. By setting the pressure plate 75, the movement synchronization of the multiple transmission members 73 is further improved, and then the synchronous movement of the multiple positioning plates 71 is realized, which can improve the position adjustment and abutment positioning effect of the positioning plate 71 on the magnetic U-shaped seat 2.

[0060] like Figure 6-8 As shown, the positioning assembly 7 also includes a fastening ring 76 arranged at the bottom end of the mounting plate 5, the fastening ring 76 is located between the inner side wall of the shielding ring 1 and the inner side wall of the storage groove 11, and the bottom end of the fastening ring 76 is provided with a slope.

[0061] Specifically, after the magnetic U-shaped seat 2 is installed in the storage groove 11 of the shielding ring 1, the positioning plate 71 is pressed against the outer wall of the magnetic U-shaped seat 2 to position the outer wall of the magnetic U-shaped seat 2, and a gap is left between the inner wall of the magnetic U-shaped seat 2 and the inner wall of the storage groove 11. Then the mounting plate 5 is installed on the shielding ring 1. At this time, the fastening ring 76 is inserted into the gap to position the inner wall of the magnetic U-shaped seat 2. In this way, both the inner and outer sides of the magnetic U-shaped seat 2 are fixed, further improving the firmness of the magnetic U-shaped seat 2 and the force balance on the inner and outer sides.

[0062] Working principle: The installation of the thrust stator structure is as follows:

[0063] First, install the stator winding 3 into the groove 21 of the magnetic U-shaped seat 2, and fix it through the epoxy insulation layer 4 to ensure that the insulation withstand voltage of the stator winding 3 passes the test and the stator winding 3 is firmly fixed; the lead wire passes through the threading hole 6;

[0064] Then, the assembled magnetic conductive U-shaped seat 2 is installed together with the stator winding 3 into the storage groove 11 of the shielding ring 1. After the magnetic conductive U-shaped seat 2 is placed in the storage groove 11, the bottom end of the magnetic conductive U-shaped seat 2 contacts the bottom end of the transmission member 73 and drives the transmission member 73 to slide. After the transmission member 73 slides, it drives the positioning plate 71 to move, so that the positioning plate 71 moves and abuts against the outer wall of the magnetic conductive U-shaped seat 2, thereby fixing the magnetic conductive U-shaped seat 2, which not only improves the firmness of the magnetic conductive U-shaped seat 2 and prevents the magnetic conductive U-shaped seat 2 from shaking horizontally, but also the multiple positioning plates 71 also play the function of adjusting the position of the magnetic conductive U-shaped seat 2, so that the magnetic conductive U-shaped seat 2 is concentric with the shielding ring 1;

[0065] Secondly, the mounting plate 5 is mounted on the shielding ring 1, and the fastening ring 76 is inserted into the gap between the inner side wall of the magnetic U-shaped seat 2 and the inner side wall of the storage groove 11 to position the inner side wall of the magnetic U-shaped seat 2;

[0066] Next, the connection between the mounting plate 5 and the shielding ring 1 is welded so that they are effectively combined into an integral sealed structure;

[0067] Finally, the installation dimensions of the thrust stator can be controlled by turning.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An anti-corrosion thrust stator structure, characterized in that: include: A shielding ring (1), wherein a top end of the shielding ring (1) is provided with an annular storage groove (11); A magnetic U-shaped seat (2) disposed in the storage groove (11), wherein an annular groove (21) is provided at the bottom end of the magnetic U-shaped seat (2); A stator winding (3) arranged in the groove (21); An epoxy insulating layer (4) for sealing the bottom opening of the groove (21); a mounting plate (5) disposed on the top of the shielding ring (1), the mounting plate (5) sealing the top opening of the storage groove (11), the shielding ring (1) and the mounting plate (5) both being provided with threading holes (6), the threading holes (6) being in communication with the groove (21); The mounting plate (5) is provided with a sealing cover plate (52) for sealing the threading hole (6); The top end of the shielding ring (1) is provided with an annular boss (12) for limiting the position of the mounting plate (5), the mounting plate (5) is sleeved on the outside of the boss, and the mounting plate (5) and the shielding ring (1) have the same outer diameter; The connection between the mounting plate (5) and the shielding ring (1) is welded and sealed; A gap is left between the side wall of the magnetic U-shaped seat (2) and the side wall of the storage groove (11), and a positioning component (7) is provided inside the shielding ring (1), and the positioning component (7) comprises: A plurality of positioning plates (71) evenly distributed on the outer side wall of the storage groove (11); A plurality of guide seats (72) arranged inside the storage groove (11); A transmission member (73) is movably arranged inside the guide seat (72), wherein the lower end of the transmission member (73) is located below the magnetic U-shaped seat (2), and the upper end of the transmission member (73) is movably connected to the positioning plate (71).

2. The anti-corrosion thrust stator structure according to claim 1, characterized in that: Both ends of the transmission member (73) are provided with abutment rods (74), the cross section of the abutment rod (74) is circular, and the positioning plate (71) is provided with a movable groove (711) corresponding to the abutment rod (74) at the upper end.

3. The anti-corrosion thrust stator structure according to claim 2, characterized in that: The transmission member (73) is in an arc shape, with two ends of the transmission member (73) extending to the outside of the guide seat (72) respectively, and the center of gravity of the transmission member (73) being located in the upper half.

4. The anti-corrosion thrust stator structure according to claim 3, characterized in that: An arc-shaped plate corresponding to the outer side wall of the magnetic conductive U-shaped seat (2) is provided at the end of the positioning plate (71).

5. The anti-corrosion thrust stator structure according to claim 4, characterized in that: The positioning assembly (7) further comprises a pressure plate (75) slidably arranged on the inner bottom wall of the storage groove (11), the abutment rod (74) at the lower end being movably connected to the pressure plate (75), and a movable groove 2 (751) corresponding to the abutment rod (74) is provided at the bottom end of the pressure plate (75).

6. The anti-corrosion thrust stator structure according to claim 5, characterized in that: The positioning assembly (7) further comprises a fastening ring (76) arranged at the bottom end of the mounting plate (5), the fastening ring (76) being located between the inner side wall of the shielding ring (1) and the inner side wall of the storage groove (11), and a slope being provided at the bottom end of the fastening ring (76).

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