A mounting device and process for a magnet and yoke of a flywheel energy storage motor permanent magnetic bearing

Abstract

The application discloses a kind of magnet and yoke iron mounting device and process of flywheel energy storage motor permanent magnet bearing, comprising: disc workstation, yoke iron of permanent magnet bearing is concentrically arranged on the upper surface of disc workstation, a circle of glue brushing hole and a circle of positioning pin hole are concentrically arranged on disc workstation, a circle of glue brushing hole and a circle of positioning pin hole are all placed on the outside of yoke iron;Positioning track, one end of positioning track is rotatably connected with the center of disc workstation, the other end extends to the outer edge of disc workstation, positioning track is equipped with the positioning pin group matched with any positioning pin hole;Upper die, the positioning iron block is in the upper die, the surrounding of positioning iron block has force group;Lower die, the accommodating cavity accommodating magnet is in the lower die, the magnet in the lower die and the positioning iron block in the upper die are mutually magnetically attracted and fixed;Jacking assembly.The application realizes the high-precision, non-destructive, controllable installation of magnet under strong magnetic force, ensures the positioning accuracy and solidification reliability of magnet and other circumferential distribution.

Description

Technical Field

[0001] This invention relates to the field of flywheel energy storage motors, and more particularly to a mounting device and process for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor. Background Technology

[0002] As a highly efficient energy storage device, the flywheel energy storage motor's core component, the permanent magnet bearing, typically employs a structure where high-performance permanent magnets (such as neodymium iron boron magnets) are embedded in the yoke to provide stable radial or axial levitation force. The performance and reliability of this type of permanent magnet bearing largely depend on the installation accuracy and curing strength of the magnet on the yoke. Currently, the industry mainly uses the following methods for installing magnets and yokes under such high magnetic attraction conditions: First, manual positioning installation, where operators use simple guide fixtures to gradually bring the magnet closer to the predetermined installation position on the yoke, utilizing the strong magnetic attraction between the yoke and the magnet to achieve natural adsorption and positioning; second, mechanically assisted installation, where a linear module or robotic arm clamps the magnet and slowly lowers it onto the yoke surface, relying on the rigidity of the clamps to resist some of the magnetic attraction force, thus controlling the lowering speed and final position.

[0003] However, the above installation methods all have serious technical defects in actual operation. First, the magnetic attraction between the magnet and the yoke in the permanent magnet bearing of the flywheel energy storage motor is extremely strong, often reaching 300 kgf or even higher. Under such a huge non-contact magnetic attraction, the magnet is prone to uncontrollable transient acceleration and attraction as it approaches the yoke, resulting in an impact collision. This impact may not only cause chipping or scratches on the magnet itself or the yoke surface, but more importantly, once the magnet and yoke come into contact, the combined effect of the huge friction and magnetic attraction makes it extremely difficult to make even slight adjustments to the magnet's position. If the initial attraction position of the magnet deviates from the preset tolerance range, forcibly prying or pushing it can easily cause the magnet to break, and once the coating on the yoke surface is damaged, it will lead to the risk of rust, making the entire component unusable and resulting in extremely high rework costs.

[0004] Secondly, permanent magnet bearings require extremely high precision in the distribution of magnets in the circumferential direction of the yoke. Any circumferential indexing error or radial position deviation will directly translate into unbalanced magnetic pull in the rotor system, leading to vibration, noise, and a decrease in bearing capacity. Current processes lack a high-precision guiding mechanism capable of achieving stable radial positioning and circumferential indexing, making it difficult to guarantee the equidistant, high-precision circumferential distribution of multiple magnets on the inner and outer rings.

[0005] Furthermore, during the adhesive curing stage of the magnet and yoke, the adhesive requires a certain curing time. During this period, the magnet is continuously subjected to the extremely strong and non-uniformly distributed magnetic attraction of the yoke, exhibiting a tendency to slightly creep towards the point of strongest magnetic field. This may cause the cured magnet to deviate from its initial positioning, directly affecting the final assembly accuracy. In addition, effectively overcoming or temporarily eliminating the magnetic interference between the tooling and the magnet during magnet placement, adhesive application, and curing is a key challenge to ensure accurate magnet release and smooth detachment of the positioning block. Current technology lacks a systematic solution for this. Therefore, there is an urgent need for an installation device and process capable of overcoming strong magnetic interference and achieving high-precision positioning and reliable curing. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a mounting device for the magnet and yoke of a permanent magnet bearing of a flywheel energy storage motor.

[0007] To achieve the above objectives, the innovative aspects of this invention are as follows: A mounting device for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor, comprising:

[0008] The disc worktable has a yoke for the permanent magnet bearing concentrically set on the upper surface of the disc worktable. The disc worktable has a ring of glue-applying holes and a ring of positioning pin holes concentrically set. The yoke has multiple magnet mounting positions, thus forming an inner ring and an outer ring of magnets concentrically set with the yoke. The ring of glue-applying holes and the ring of positioning pin holes are all located on the outside of the yoke.

[0009] The positioning track has one end rotatably connected to the center of the disc worktable, and the other end extends to the outer edge of the disc worktable. The positioning track is equipped with a set of positioning pins that mate with any positioning pin hole, which is used to achieve radial positioning of the positioning track at any magnet installation position.

[0010] The upper mold is slidably disposed within the positioning track along the extension direction of the positioning track. The upper mold contains a positioning iron block, and a force application group is provided around the positioning iron block to apply a downward separation force to the magnet that is magnetically attracted to the positioning iron block.

[0011] The lower mold is slidably disposed within the positioning track along the extension direction of the positioning track and is fixedly connected to the lower part of the upper mold. The lower mold has a receiving cavity for accommodating magnets. The magnets in the lower mold and the positioning iron blocks in the upper mold are magnetically attracted to each other and fixed. The attraction between the magnet and the yoke is greater than the attraction between the magnet and the positioning iron blocks.

[0012] The clamping assembly includes a first clamping member and a second clamping member that are placed on both sides of the upper and lower molds to axially clamp the upper and lower molds. The first clamping member is detachably installed at the end of the positioning rail away from the center of the disc worktable. When the first clamping member is detached, it provides space for the lower mold to slide from the end of the positioning rail to the lower end face of the upper mold. When the first clamping member is installed at the end of the positioning rail, it is used to axially clamp the upper and lower molds.

[0013] A further improvement of the present invention is that: the lower side of the end of the positioning track away from the center of the disc worktable has an auxiliary positioning frame, the upper two ends of the positioning track have upper slides along its extension direction, the upper two sides of the upper mold protrude outward and are constrained in the upper slides to achieve horizontal sliding, the inner walls of the auxiliary positioning frame have lower slides on both sides, the lower two sides of the lower mold are constrained in the lower slides to achieve horizontal sliding, the auxiliary positioning frame is a U-shaped structure with the opening facing the positioning track, the lower side of the auxiliary positioning frame is integrally connected to the base plate near the first clamping member, the lower side of the auxiliary positioning frame is a through hole near the second clamping member, and the through hole is vertically corresponding to any of the glue application holes.

[0014] A further improvement of the present invention is that: the upper end of the positioning track is provided with a sealing strip that embeds the upper end face of the upper mold in the upper slide, the sealing strip is detachably fixedly connected to the positioning track, and the upper end center of the upper mold has a handle.

[0015] A further improvement of the present invention is that: the positioning pin assembly is fixedly installed on the lower end face of the base plate. The positioning pin assembly includes a positioning box, a positioning pin, a buffer spring, a rotating handle, a rotating shaft, and a cam. The rotating shaft passes horizontally through the positioning box, and one end of the rotating shaft is placed outside the positioning box and fixedly connected to the rotating handle. A cam is fixedly sleeved on the rotating shaft. A baffle, a buffer spring, and a positioning pin are embedded in the positioning box from top to bottom. The buffer spring is placed between the baffle and the positioning pin. The baffle is placed on the lower end face of the cam. When the cam rotates with the rotating shaft, its protruding end contacts the baffle and squeezes the baffle and the buffer spring, causing the positioning pin to move down into the corresponding positioning pin hole.

[0016] A further improvement of the present invention is that: the positioning box has a roller shaft, and a rotatable roller is sleeved on the roller shaft, and the roller contacts the upper end surface of the disc worktable.

[0017] A further improvement of the present invention is that: the force application group consists of at least two bolts symmetrically arranged around the positioning iron block, the bolts penetrating the positioning iron block, and by turning the symmetrically distributed bolts in the forward direction, the positioning iron block pushes against the upper surface of the magnet, thereby achieving the pre-positioning of the magnet in the magnet installation position, and by turning the symmetrically distributed bolts in the reverse direction, the positioning iron block is separated from the magnet.

[0018] A further improvement of the present invention is that: the first clamping member includes a first connecting plate connected to the end of the positioning track and a first clamping screw penetrating through the first connecting plate, and the end of the first clamping screw contacts the lower mold;

[0019] The second clamping component includes a second connecting plate fixedly connected to the positioning rail and a second clamping screw penetrating through the second connecting plate. The end of the second clamping screw contacts the lower mold, and the first clamping screw and the second clamping screw are respectively placed on both sides of the lower mold.

[0020] An installation process for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor includes the following steps:

[0021] S1. Fix the yoke to the disc worktable, rotate the positioning rail to place the positioning rail to the side of the target magnet installation position, and place the positioning pin of the positioning pin group into the corresponding positioning pin hole to fix the positioning rail on the disc worktable.

[0022] S2. Remove the seal above the positioning rail, insert the upper mold into the upper slide of the positioning rail, install the seal so that the upper mold slides only along the extension direction of the positioning rail, and the second clamping member clamps the side end face of the upper mold so that the upper mold is in the initial position of the positioning rail.

[0023] S3. Install the magnet in the receiving cavity of the lower mold and apply lubricating oil to the upper surface of the magnet;

[0024] S4. Remove the first clamping component and insert the lower mold with the magnet installed into the sliding track from the end of the positioning track. Under the action of horizontal thrust, the lower mold moves to the position of the second clamping component and is placed directly below the upper mold and magnetically fixed to the upper mold. At this time, the magnet in the lower mold is set up vertically with a glue brushing hole.

[0025] S5. Install the first clamping component and rotate the first clamping screw to clamp the upper and lower molds together with the second clamping screw.

[0026] S6. Apply adhesive to the lower end face of the magnet through the glue application hole on the disc worktable, and at the same time apply curing agent to the position of the target magnet installation station.

[0027] S7. Cancel the positioning pin group to fix the positioning rail, rotate the positioning rail to align the axial direction of the positioning rail with the target magnet installation position, cancel the clamping of the first and second clamping screws on the upper and lower molds, and push the pull handle to make the upper and lower molds slide synchronously towards the target magnet installation position.

[0028] S8. By turning the symmetrically distributed bolts in the forward direction, the positioning iron block moves down and pushes the upper surface of the magnet. The magnet is initially attracted to the magnet installation position by the magnetic force of the yoke. Pull the handle to make the magnet close to the edge of the magnet installation position. Turn the symmetrically distributed bolts in the reverse direction to separate the positioning iron block from the magnet, so as to avoid the magnetic attraction of the positioning iron block from affecting the curing of the magnet and the yoke. The first and second clamping parts clamp and limit the two sides of the lower mold to provide positional accuracy for the curing of the magnet.

[0029] S9. After curing for 10-20 minutes, remove the seal and pull the upper and lower molds out of the positioning track as a whole using the pull handle. Then, fix the magnet and yoke with the fastening bolts.

[0030] S10. Repeat steps S2 to S9 to complete the installation of multiple magnets in the inner and outer rings of the magnet.

[0031] A further improvement of the present invention is that, in step S10, the magnets of the inner ring and the outer ring are installed in a sequence of first the inner ring and then the outer ring, with intervals between them.

[0032] A further improvement of the present invention is that the edges of both the inner ring and the outer ring of the magnet have limiting bosses. In step S7, the pull handle is pushed to bring the edges of the upper mold and the lower mold close to the limiting bosses of the corresponding target magnet installation positions.

[0033] The beneficial effects of this invention are:

[0034] 1. This invention integrates the rotating positioning track, the sliding guide of the upper and lower dies within the upper and lower sliding rails, and the clamping force of the clamping assembly on the upper and lower dies into a complete installation system. In the circumferential indexing stage, one end of the positioning track is rotatably connected to the center of the disc worktable, and the other end is rigidly locked to the positioning pin hole on the worktable through the positioning pin group. This positioning relationship itself constitutes a polar coordinate system—the center is the pole, the track direction is the polar axis, and the pin hole array is the physical reference for the indexing angle. The machining accuracy of the positioning pin hole directly determines the indexing accuracy. In the radial guiding stage, the upper die moves along the upper slide of the positioning track, and the lower die moves along the lower slide of the auxiliary positioning frame in a single-degree-of-freedom linear motion. This design is not a simple superposition of guiding functions, but rather extends the polar axis direction established by the indexing stage without gaps into the only permissible path for the magnet to move towards the yoke installation position. During the sliding process, the upper and lower molds are constrained by the upper and lower slide rails throughout, and radial sway is completely eliminated. The indexing accuracy and guiding accuracy are rigidly transmitted in series. Meanwhile, the first and second clamping parts of the clamping assembly rigidly clamp the lower mold from the side during the curing stage, forming a closed force flow loop between the lower mold, the positioning rail, and the disc worktable. The significance of this closed force flow loop is that the circumferential and radial positions of the magnets are always locked by the complete rigid constraint chain of the positioning pin holes, positioning rails, upper and lower slide rails, and clamping assembly throughout the entire process from when the magnets are pushed out until the curing is completed. Any external disturbances or magnetic creep are absorbed by the closed loop system and cannot cause positional deviation, effectively achieving a high-precision circumferential distribution of multiple magnets under the action of huge magnetic attraction.

[0035] 2. In the installation process of the magnet and yoke of the present invention, during the stage when multiple magnets approach the yoke, the magnets are pre-encapsulated in the lower mold cavity and magnetically fixed to the upper mold. The entire assembly moves as a rigid whole under the mechanical constraint of the positioning track. At this time, the sudden increase in the attraction force of the yoke to the magnet is entirely borne by the structural components of the upper and lower molds and the clamping assembly. The magnet itself is in a "force-closed" state and does not produce any uncontrollable displacement. Secondly, in the magnet release stage, the magnet is pushed out of the lower mold and pressed against the yoke by mechanical force through the screwing of the bolt. The movement of the magnet is a forced movement controlled by displacement. The process completely eliminates the impact risk caused by magnetic attraction acceleration. Subsequently, the reverse screwing of the bolts forces the positioning iron block to separate from the magnet, using mechanical pulling to overcome the magnetic interference of the tooling itself, rather than letting it slowly decay or being manually removed. During the curing stage, the clamping assembly clamps the lower mold from the side, forming a mechanical cage that resists the magnetic creep of the yoke. The positioning iron block above has been forcibly separated, and the magnet is only subject to the magnetic attraction of the yoke in one direction during the curing period. Its final bonding posture is not affected by the magnetic attraction of the positioning iron block, thus ensuring a high degree of uniformity in the positional accuracy and bonding strength of the magnet on the yoke. Attached Figure Description

[0036] Figure 1 This is a schematic diagram showing the positions of the mounting device and the yoke in this invention.

[0037] Figure 2 for Figure 1 A schematic diagram showing the connection between the central positioning track and the circular worktable.

[0038] Figure 3 for Figure 1 A schematic diagram of the positioning track.

[0039] Figure 4 for Figure 1 Cross-sectional view of the structure after the upper and lower molds are installed.

[0040] Figure 5 for Figure 1 Internal sectional view of the center locating pin assembly.

[0041] Explanation of the labels in the diagram:

[0042] 1-Yoke, 2-Magnet, 3-Disc worktable, 4-Glue application hole, 5-Positioning pin hole, 6-Magnet installation station, 7-Positioning rail, 8-Positioning pin group, 9-Tightening assembly, 10-Upper mold, 11-Lower mold, 12-Positioning block, 13-Receiving cavity, 14-Auxiliary positioning frame, 15-Upper slide rail, 16-Lower slide rail, 17-Base plate, 18-Through hole, 19-Seal, 20-Bolt, 21-Handle, 22-Limiting boss;

[0043] 81-Positioning box, 82-Positioning pin, 83-Buffer spring, 84-Rotating handle, 85-Rotating shaft, 86-Cam, 87-Roller shaft, 88-Roller, 89-Baffle plate;

[0044] 91-First connecting plate, 92-First tightening screw, 93-Second connecting plate, 94-Second tightening screw. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] like Figure 1 , Figure 2 As shown, the present invention provides a mounting device for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor, comprising:

[0047] The disc worktable 3 has a yoke 1 of permanent magnet bearing concentrically set on the upper surface of the disc worktable 3. The disc worktable 3 has a ring of glue-brushing holes 4 and a ring of positioning pin holes 5 concentrically set on it. The yoke 1 has multiple magnet mounting positions 6, thus forming an inner ring of magnets and an outer ring of magnets concentrically set with the yoke 1. The ring of glue-brushing holes 4 and the ring of positioning pin holes 5 are all located on the outside of the yoke 1.

[0048] Positioning rail 7, one end of which is rotatably connected to the center of the disc worktable 3, and the other end extends to the outer edge of the disc worktable 3. Positioning rail 7 is provided with positioning pin group 8 that cooperates with any positioning pin hole 5, which is used to realize the radial positioning of positioning rail 7 at any magnet installation station 6.

[0049] Upper mold 10, refer to Figure 4 The upper mold 10 is slidably disposed within the positioning track 7 along the extension direction of the positioning track 7. The upper mold 10 has a positioning iron block 12, and a force application group is provided around the positioning iron block 12 to apply a downward separation force to the magnet 2 magnetically attracted to the positioning iron block 12.

[0050] The lower mold 11 is slidably disposed in the positioning track 7 along the extension direction of the positioning track 7 and is fixedly connected to the lower part of the upper mold 10. The lower mold 11 has a receiving cavity 13 for accommodating the magnet 2. The magnet 2 in the lower mold 11 and the positioning iron block 12 in the upper mold 10 are magnetically attracted to each other and fixed. The attraction force between the magnet 2 and the yoke 1 is greater than the attraction force between the magnet 2 and the positioning iron block.

[0051] The clamping assembly 9 includes a first clamping member and a second clamping member that are placed on both sides of the upper mold 10 and the lower mold 11 to axially clamp them. The first clamping member is detachably installed at the end of the positioning rail 7 away from the center of the disc worktable 3. When the first clamping member is detached, it provides space for the lower mold 11 to slide from the end of the positioning rail 7 to the lower end face of the upper mold 10. When the first clamping member is installed at the end of the positioning rail 7, it is used to axially clamp the upper mold 10 and the lower mold 11.

[0052] Furthermore, refer to Figure 3 The lower end of the positioning track 7 away from the center of the disc worktable 3 has an auxiliary positioning frame 14. The upper two ends of the positioning track 7 have upper slides 15 along its extension direction. The upper two sides of the upper mold 10 protrude outward and are constrained within the upper slides 15 to achieve horizontal sliding. The inner walls of the auxiliary positioning frame 14 have lower slides 16. The lower two sides of the lower mold 11 are constrained within the lower slides 16 to achieve horizontal sliding. The auxiliary positioning frame 14 is a U-shaped structure with its opening facing the positioning track 7. The lower side of the auxiliary positioning frame 14 is integrally connected to a base plate near the first clamping member. The lower side of the auxiliary positioning frame 14 is near the second clamping member and has a through hole 18. The through hole 18 is vertically and vertically corresponding to any of the glue application holes 4.

[0053] This invention integrates the rotating positioning track 7, the sliding guide of the upper and lower dies within the upper and lower slide rails, and the clamping force of the clamping component 9 on the upper and lower dies into a complete installation system. In the circumferential indexing stage, one end of the positioning track 7 is rotatably connected to the center of the disc worktable 3, and the other end is rigidly locked to the positioning pin hole 5 on the disc worktable 3 through the positioning pin group 8. This positioning relationship itself constitutes a polar coordinate system—the center is the pole, the direction of the positioning track 7 is the polar axis, and the positioning pin hole array is the physical reference for the indexing angle. The machining accuracy of the positioning pin hole 5 directly determines the indexing accuracy. In the radial guiding stage, the upper die 10 moves along the upper slide rail 15 of the positioning track 7, and the lower die 11 moves along the lower slide rail 16 of the auxiliary positioning frame 14 in a single-degree-of-freedom linear motion. This design is not a simple superposition of guiding functions, but rather extends the polar axis direction established by the indexing stage without gaps into the only permissible path for the magnet 2 to move towards the installation position of the yoke 1. During the sliding process, the upper and lower molds are constrained by the upper and lower slides throughout, and radial sway is completely eliminated. The indexing accuracy and guiding accuracy are rigidly transmitted in series. During the curing stage, the first and second clamping parts of the clamping assembly rigidly clamp the lower mold 11 from the side, so that the lower mold 11, the positioning track 7, and the disc worktable 3 form a closed force flow loop. The significance of this closed force flow loop is that the circumferential and radial positions of the magnet 2 are always locked by the complete rigid constraint chain of the positioning pin hole 5, the upper and lower slides of the positioning track 7, and the clamping assembly 9 throughout the entire process from being pushed out to the completion of curing. Any external disturbance or magnetic creep is absorbed by the closed loop system and cannot cause position deviation, effectively realizing the high-precision circumferential distribution of multiple magnets 2 under the action of huge magnetic attraction.

[0054] Furthermore, the upper end of the positioning track 7 is provided with a sealing strip 19 that embeds the upper end face of the upper mold 10 into the upper slide rail 15. The sealing strip 19 is detachably fixedly connected to the positioning track 7, and the upper end center of the upper mold 10 has a handle 21.

[0055] Furthermore, refer to Figure 5 The positioning pin assembly 8 is fixedly installed on the lower end face of the base plate 17. The positioning pin assembly 8 includes a positioning box 81, a positioning pin 82, a buffer spring 83, a rotating handle 84, a rotating shaft 85, and a cam 86. The rotating shaft 85 horizontally passes through the positioning box 81, and one end of the rotating shaft 85 is placed outside the positioning box 81 and fixedly connected to the rotating handle 84. The cam 86 is fixedly sleeved on the rotating shaft 85. The positioning box 81 is fitted with a baffle 89, a buffer spring 83, and a positioning pin 82 from top to bottom. The buffer spring 83 is placed between the baffle 89 and the positioning pin 82. The baffle 89 is placed on the lower end face of the cam 86. When the cam 86 rotates with the rotating shaft 85, its protruding end contacts the baffle 89 and squeezes the baffle 89 and the buffer spring 83, causing the positioning pin 82 to move down into the corresponding positioning pin hole 5.

[0056] The working principle of the positioning pin assembly: It employs a cam 86-driven elastic pressing mechanism. Initially, the positioning pin 82 is retracted under the action of the buffer spring 83. When the positioning track 7 rotates to the target position and the positioning pin 82 aligns with the corresponding positioning pin hole 5 on the disc worktable 3, the operator rotates the handle 84, causing the rotating shaft 85 and cam 86 to rotate synchronously. The protruding end of the cam 86 presses down on the baffle 89 as it rotates, compressing the buffer spring 83. The spring force is transmitted to the positioning pin 82, smoothly pressing it into the positioning pin hole 5, achieving rigid locking of the positioning track 7 in the circumferential direction. Reversing the handle resets the cam 86, causing the buffer spring 83 to rebound and retract the positioning pin, releasing the lock.

[0057] Furthermore, the positioning box 81 has a roller shaft 87, and a rotatable roller 88 is sleeved on the roller shaft 87. The roller 88 is in contact with the upper surface of the disc worktable 3.

[0058] The design of roller 88 creates rolling contact between the positioning box 81 and the disc worktable 3, converting the sliding friction of the positioning track 7 during rotation into rolling friction. This significantly reduces rotational resistance and operating torque, making the circumferential indexing operation of the positioning track 7 easier and smoother. Simultaneously, roller 88 provides auxiliary support to the ends of the positioning track 7, ensuring that the positioning pin assembly 8 maintains a constant parallel clearance with the disc worktable 3 during rotation, preventing the positioning box 81 from tilting or scratching the worktable surface.

[0059] Furthermore, the force application group consists of at least two bolts 20 symmetrically arranged around the positioning iron block 12. The bolts 20 penetrate the positioning iron block 12. By turning the symmetrically distributed bolts 20 in the forward direction, the positioning iron block 12 pushes against the upper surface of the magnet 2, thereby achieving the pre-positioning of the magnet 2 at the magnet installation position 6. By turning the symmetrically distributed bolts 20 in the reverse direction, the positioning iron block 12 is separated from the magnet 2.

[0060] Furthermore, the first clamping member includes a first connecting plate 91 connected to the end of the positioning rail 7 and a first clamping screw 92 passing through the first connecting plate 91, the end of the first clamping screw 92 contacting the lower mold 11;

[0061] The second clamping component includes a second connecting plate 93 fixedly connected to the positioning rail 7 and a second clamping screw 94 passing through the second connecting plate 93. The end of the second clamping screw 94 contacts the lower mold 11. The first clamping screw 92 and the second clamping screw 94 are respectively placed on both sides of the lower mold 11.

[0062] An installation process for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor includes the following steps:

[0063] S1. Fix the yoke 1 on the disc worktable 3, rotate the positioning rail 7 so that the positioning rail 7 is placed on the side of the target magnet installation station 6, and place the positioning pin 82 of the positioning pin group 8 into the corresponding positioning pin hole 5 so that the positioning rail 7 is fixed on the disc worktable 3.

[0064] S2. Remove the seal 19 above the positioning rail 7, insert the upper mold 10 into the upper slide 15 of the positioning rail 7, install the seal 19 so that the upper mold 10 slides only along the extension direction of the positioning rail 7, and the second clamping member clamps the side end face of the upper mold 10 so that the upper mold 10 is in the initial position of the positioning rail 7.

[0065] S3. Install the magnet 2 in the receiving cavity 13 of the lower mold 11, and apply lubricating oil to the upper surface of the magnet 2;

[0066] S4. Remove the first clamping member and insert the lower mold 11 with the magnet 2 installed into the sliding track 16 from the end of the positioning track 7. Under the action of horizontal thrust, the lower mold 11 moves to the position of the second clamping member and is placed directly below the upper mold 10 and magnetically fixed to the upper mold 10. At this time, the magnet 2 in the lower mold 11 is set up vertically and vertically with a glue brushing hole 4.

[0067] S5. Install the first clamping component and rotate the first clamping screw 92 to clamp the upper and lower molds together with the second clamping screw 94.

[0068] S6. Apply adhesive to the lower end face of magnet 2 through the glue application hole 4 on the disc worktable 3, and at the same time apply curing agent to the position of the target magnet installation station 6.

[0069] S7. Cancel the positioning and fixing of the positioning pin group 8 to the positioning rail 7, rotate the positioning rail 7 so that the axial direction of the positioning rail 7 is aligned with the target magnet installation station 6, cancel the clamping of the first clamping screw 92 and the second clamping screw 94 on the upper and lower molds, and push the pull handle 21 to make the upper mold 10 and the lower mold 11 slide synchronously towards the target magnet installation station 6.

[0070] S8. By turning the symmetrically distributed bolts 20 in the forward direction, the positioning iron block 12 moves down and pushes the upper surface of the magnet 2. The magnet 2 is initially attracted to the magnet installation position 6 by the magnetic force of the yoke 1. Pull the handle 21 to make the magnet 2 close to the edge of the magnet installation position 6. Turn the symmetrically distributed bolts 20 in the reverse direction to separate the positioning iron block 12 from the magnet 2, so as to avoid the magnetic attraction of the positioning iron block 12 from affecting the curing of the magnet 2 and the yoke 1. The first clamping part and the second clamping part clamp and limit the two sides of the lower mold 11 to provide positional accuracy for the curing of the magnet 2.

[0071] S9. After curing for 10-20 minutes, remove the seal 19, and use the pull handle 21 to pull the upper mold 10 and lower mold 11 out of the positioning track 7 as a whole. Then, use the fastening bolts to fix the magnet 2 and the yoke 1.

[0072] S10. Repeat steps S2 to S9 to complete the installation of multiple magnets 2 on the inner and outer rings of the magnets.

[0073] In the installation process of the magnet 2 and yoke 1 of the present invention, during the stage when the magnet 2 approaches the yoke 1, the magnet 2 is pre-encapsulated in the receiving cavity 13 of the lower 11 and magnetically fixed with the upper mold 10. The entire assembly moves as a rigid whole under the mechanical constraint of the positioning track 7. At this time, the sudden increase in attraction of the yoke 1 to the magnet 2 is entirely borne by the structural components of the upper and lower molds and the clamping assembly 9. The magnet 2 itself is in a force-closed state and does not produce any uncontrollable displacement. Secondly, during the magnet release stage, the magnet 2 is pushed out of the lower mold 11 and pressed against the yoke 1 by mechanical force through the screw 20. The movement of the magnet 2 is strongly controlled by displacement. The stroke is controlled, completely eliminating the impact risk caused by magnetic acceleration. Subsequently, the reverse screw 20 forces the positioning iron block 12 and the magnet 2 to separate. The mechanical pulling overcomes the magnetic interference of the tooling itself, rather than letting it slowly decay or being manually removed. During the curing stage, the clamping component 9 clamps the lower mold 11 from the side, forming a mechanical cage that resists the magnetic creep of the yoke. The positioning iron block 12 above has been forcibly separated. During the curing period, the magnet 2 is only subjected to the magnetic attraction of the yoke in one direction. Its final bonding posture is not affected by the magnetic attraction of the positioning iron block, thus ensuring the high uniformity of the positional accuracy and bonding strength of the magnet 2 on the yoke 1.

[0074] In step S10, the magnets of the inner ring and outer ring are installed in sequence, with the inner ring first and then the outer ring, and then at intervals.

[0075] This invention employs an installation method that proceeds from the inner ring to the outer ring. This method provides a safe installation channel for the inner ring magnets. If the outer ring is installed first, the tools used to install the inner ring magnets will be severely interfered with by the strong magnetic field of the outer ring, potentially causing them to lose control and collide with already installed magnets. Furthermore, installing the inner ring magnets first allows the yoke to form an internal magnetic circuit, providing magnetic shielding to the outer ring installation area. The sequential, intermittent installation of the magnets primarily aims to prevent accumulated errors. If installed sequentially, even small deviations will accumulate, causing the last few magnets to fail to install or become loose. Intermittent installation evenly distributes errors, ensuring precise positioning of the entire ring of magnets. It also balances the stress generated during adhesive curing, preventing magnet misalignment and avoiding strong attraction from installed magnets to tools in adjacent empty workstations, thus ensuring installation safety.

[0076] Both the inner and outer rings of the magnet have limiting bosses 22 on their edges. In step S7, the pull handle 21 is pushed to bring the edges of the upper mold 10 and the lower mold 11 close to the limiting bosses 22 of the corresponding target magnet mounting station 6. The function of the limiting bosses 22 is to provide a clear mechanical stop for the radial sliding of the lower mold 11, ensuring that the magnet 2 has been accurately delivered to the preset radial position before release. Thus, in addition to the angular indexing reference of the polar coordinate system, the deterministic positioning of the radial position is further realized, so that the distribution accuracy of the magnet 2 on the inner and outer rings is guaranteed by both the pin hole indexing and the boss stop.

[0077] It should be emphasized that the manual screwing and manual rotation of the handle described in the above embodiments are merely illustrative descriptions to facilitate the explanation of the working principle of the present invention and do not constitute a limitation on the implementation of the technical solution of the present invention. The core of the protection claimed by the present invention lies in the polar coordinate indexing system formed by the positioning track and the disc worktable, the sliding guide and force field decoupling structure of the upper and lower molds, and the sequential installation process logic of "rigid constraint-active release-lateral locking", rather than the specific power form driving the movement of these mechanisms.

[0078] Based on the same inventive concept, those skilled in the art can easily replace the aforementioned manual operations with automated drive methods such as pneumatic, electric, or hydraulic systems, depending on actual production conditions. For example, the bolt pushing of the force application group can be replaced by a linear drive of a pneumatic or electric cylinder, achieving smooth ejection of the magnet and forced separation of the positioning iron block by controlling the extension and retraction of the piston rod; the first and second clamping screws of the clamping assembly can be replaced by a lead screw mechanism driven by a geared motor, realizing automatic clamping and loosening of the upper and lower dies; the cam rotation of the positioning pin group can also be driven by a rotary cylinder or electromagnetic clutch, realizing automatic insertion and removal of the positioning pins. All the above equivalent substitutions should fall within the protection scope of this invention.

[0079] In other words, this invention provides a mechanical system architecture and process methodology for achieving high-precision installation under strong magnetic attraction conditions. Its value lies in the timing logic of force field management, the rigid chain design for reference transfer, and the spatial integration of multiple processes, without being limited by the specific selection of driving components. Any manual operation descriptions in this specific embodiment should not be construed as a narrowing of the scope of protection of this invention.

[0080] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0081] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0082] In conclusion, 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 within the protection scope of the present invention.

Claims

1. A mounting device for the magnet and yoke of a permanent magnet bearing in a flywheel energy storage motor, characterized in that, include: The disc worktable has a yoke for the permanent magnet bearing concentrically set on the upper surface of the disc worktable. The disc worktable has a ring of glue-applying holes and a ring of positioning pin holes concentrically set. The yoke has multiple magnet mounting positions, thereby forming an inner ring and an outer ring of magnets concentrically set with the yoke. The ring of glue-applying holes and the ring of positioning pin holes are all located on the outside of the yoke. The positioning track has one end rotatably connected to the center of the disc worktable, and the other end extends to the outer edge of the disc worktable. The positioning track is provided with a group of positioning pins that cooperate with any positioning pin hole, which is used to realize the radial positioning of the positioning track at any magnet installation position. The upper mold is slidably disposed within the positioning track along the extension direction of the positioning track. The upper mold contains a positioning iron block, and a force application group is provided around the positioning iron block to apply a downward separation force to the magnet that is magnetically attracted to the positioning iron block. The lower mold is slidably disposed within the positioning track along the extension direction of the positioning track and is fixedly connected to the lower part of the upper mold. The lower mold has a receiving cavity for accommodating magnets. The magnets in the lower mold and the positioning iron blocks in the upper mold are magnetically attracted to each other and fixed. The attraction force between the magnet and the yoke is greater than the attraction force between the magnet and the positioning iron blocks. The clamping assembly includes a first clamping member and a second clamping member that are placed on both sides of the upper and lower molds to axially clamp the upper and lower molds. The first clamping member is detachably installed at the end of the positioning track away from the center of the disc worktable. When the first clamping member is detached, it provides space for the lower mold to slide from the end of the positioning track to the lower end face of the upper mold. When the first clamping member is installed at the end of the positioning track, it is used to axially clamp the upper and lower molds.

2. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 1, characterized in that, The positioning track has an auxiliary positioning frame on its lower side at the end away from the center of the disc worktable. The upper two ends of the positioning track have upper slides along its extension direction. The upper two sides of the upper mold protrude outward and are constrained within the upper slides to achieve horizontal sliding. The inner walls of the auxiliary positioning frame have lower slides on both sides. The lower two sides of the lower mold are constrained within the lower slides to achieve horizontal sliding. The auxiliary positioning frame is a U-shaped structure with its opening facing the positioning track. A base plate is integrally connected to the lower side of the auxiliary positioning frame near the first clamping member. The lower side of the auxiliary positioning frame near the second clamping member has a through hole. The through hole is vertically corresponding to any of the glue application holes.

3. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 2, characterized in that, The upper end of the positioning track is provided with a sealing strip that embeds the upper end face of the upper mold into the upper slide. The sealing strip is detachably fixed to the positioning track, and the upper end of the upper mold has a handle at its center.

4. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 3, characterized in that, The positioning pin assembly is fixedly installed on the lower end face of the base plate. The positioning pin assembly includes a positioning box, a positioning pin, a buffer spring, a rotating handle, a rotating shaft, and a cam. The rotating shaft horizontally passes through the positioning box, and one end of the rotating shaft is placed outside the positioning box and fixedly connected to the rotating handle. A cam is fixedly sleeved on the rotating shaft. A baffle, a buffer spring, and a positioning pin are embedded in the positioning box from top to bottom. The buffer spring is placed between the baffle and the positioning pin. The baffle is placed on the lower end face of the cam. When the cam rotates with the rotating shaft, its protruding end contacts the baffle and squeezes the baffle and the buffer spring, causing the positioning pin to move down into the corresponding positioning pin hole.

5. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 4, characterized in that, The positioning box contains a roller shaft, on which a rotatable roller is fitted, and the roller contacts the upper surface of the disc worktable.

6. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 5, characterized in that, The force application group consists of at least two bolts symmetrically arranged around the positioning iron block. The bolts penetrate the positioning iron block. By turning the symmetrically distributed bolts in the forward direction, the positioning iron block pushes against the upper surface of the magnet, thereby achieving the pre-positioning of the magnet at the magnet installation position. By turning the symmetrically distributed bolts in the reverse direction, the positioning iron block is separated from the magnet.

7. The mounting device for the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 6, characterized in that, The first clamping member includes a first connecting plate connected to the end of the positioning rail and a first clamping screw penetrating through the first connecting plate, the end of the first clamping screw contacting the lower mold; The second clamping component includes a second connecting plate fixedly connected to the positioning rail and a second clamping screw penetrating through the second connecting plate. The end of the second clamping screw contacts the lower mold, and the first clamping screw and the second clamping screw are respectively placed on both sides of the lower mold.

8. A process for installing the magnet and yoke of the permanent magnet bearing of the flywheel energy storage motor as described in claim 7, characterized in that, Includes the following steps: S1. Fix the yoke to the disc worktable, rotate the positioning rail to place the positioning rail to the side of the target magnet installation position, and place the positioning pin of the positioning pin group into the corresponding positioning pin hole to fix the positioning rail on the disc worktable. S2. Remove the seal above the positioning rail, insert the upper mold into the upper slide of the positioning rail, install the seal so that the upper mold slides only along the extension direction of the positioning rail, and the second clamping member clamps the side end face of the upper mold so that the upper mold is in the initial position of the positioning rail. S3. Install the magnet in the receiving cavity of the lower mold and apply lubricating oil to the upper surface of the magnet; S4. Remove the first clamping component and insert the lower mold with the magnet installed into the sliding track from the end of the positioning track. Under the action of horizontal thrust, the lower mold moves to the position of the second clamping component and is placed directly below the upper mold and magnetically fixed to the upper mold. At this time, the magnet in the lower mold is set up vertically with a glue brushing hole. S5. Install the first clamping component and rotate the first clamping screw to clamp the upper and lower molds together with the second clamping screw. S6. Apply adhesive to the lower end face of the magnet through the glue application hole on the disc worktable, and at the same time apply curing agent to the position of the target magnet installation station. S7. Cancel the positioning pin group to fix the positioning rail, rotate the positioning rail to align the axial direction of the positioning rail with the target magnet installation position, cancel the clamping of the first and second clamping screws on the upper and lower molds, and push the pull handle to make the upper and lower molds slide synchronously towards the target magnet installation position. S8. By turning the symmetrically distributed bolts in the forward direction, the positioning iron block moves down and pushes the upper surface of the magnet. The magnet is initially attracted to the magnet installation position by the magnetic force of the yoke. Pull the handle to make the magnet close to the edge of the magnet installation position. Turn the symmetrically distributed bolts in the reverse direction to separate the positioning iron block from the magnet, so as to avoid the magnetic attraction of the positioning iron block from affecting the curing of the magnet and the yoke. The first and second clamping parts clamp and limit the two sides of the lower mold to provide positional accuracy for the curing of the magnet. S9. After curing for 10-20 minutes, remove the seal and pull the upper and lower molds out of the positioning track as a whole using the pull handle. Then, fix the magnet and yoke with the fastening bolts. S10. Repeat steps S2 to S9 to complete the installation of multiple magnets in the inner ring and outer ring of the magnet.

9. The installation process of the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 8, characterized in that, In step S10, the magnets of the inner ring and outer ring are installed in sequence, with the inner ring first and then the outer ring, and then at intervals.

10. The installation process of the magnet and yoke of the permanent magnet bearing of a flywheel energy storage motor according to claim 8 or 9, characterized in that, Both the inner and outer rings of the magnet have limiting bosses on their edges. In step S7, the pull handle is pushed to bring the edges of the upper and lower molds close to the limiting bosses of the corresponding target magnet installation positions.

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