Permanent magnet machine rotor magnetic steel assembly tool

Abstract

The utility model provides a permanent magnet machine rotor magnetic steel assembly tool. The permanent magnet machine rotor magnetic steel assembly tool comprises a bottom plate, side plates fixed on two sides of the bottom plate, a top plate arranged at one end of the bottom plate and connected with the two side plates, a plurality of profiling blocks, a pushing mechanism arranged at the other end of the bottom plate, and a fastening mechanism. The bottom plate and the side plates on the two sides define a containing groove, and the containing groove is matched with a base of the magnetic steel. The profiling block is a magnetic steel block profiling block of magnetic steel, the profiling block and the magnetic steel block to be assembled are arranged in the containing groove side by side, and the pushing mechanism can move in the length direction of the side plate so as to push the profiling block to move in the direction close to the top plate. The fastening mechanism comprises a pressing piece, and the pressing piece is configured to exert pressing force towards the direction of the bottom plate on the magnetic steel block of the magnetic steel. The arrangement of the assembling tool ensures the accurate positioning and guiding effects of the magnetic steel block in the assembling process, and meanwhile, the accurate control of the pushing mechanism and the fastening mechanism also ensures the stability and consistency of the assembling precision.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant technology, and more specifically, to a permanent magnet rotor magnet assembly fixture. Background Technology

[0002] Currently, most megawatt-class nuclear power generators in nuclear power plants use brushless excitation, and brushless exciters are paired with AlNiCo external rotor permanent magnet motors.

[0003] The new type of rare-earth cobalt magnet used in permanent magnet machines consists of a base, a steel cover, and multiple thin rare-earth cobalt magnets. The small size of the rare-earth cobalt magnets effectively reduces the probability of casting cracks, and their encapsulation by the base and steel cover enhances safety.

[0004] Unlike traditional integrated AlNiCo magnets, the new rare-earth cobalt magnets are modular components that require a series of manufacturing and assembly processes before use. After manufacturing, they also need to undergo corresponding testing to ensure their performance meets requirements. Therefore, a specialized tooling was designed for assembling the new rare-earth cobalt magnets. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a permanent magnet rotor magnet assembly tooling to address the above-mentioned deficiencies of the prior art.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a permanent magnet rotor magnet assembly fixture, wherein the magnet includes a base, a plurality of magnet blocks disposed on the base, and a magnet cover fastened to the magnet blocks, and includes a base plate, side plates fixed to both sides of the base plate, a top plate disposed at one end of the base plate and connecting the two side plates, a plurality of contour blocks, a pushing mechanism disposed at the other end of the base plate, and a fastening mechanism;

[0007] The base plate and the side plates on both sides define a placement groove, which matches the base of the magnet.

[0008] The contour block is a magnetic steel block imitation block of a magnet. The contour block and the magnet block to be assembled are placed side by side in the placement slot. The pushing mechanism can move along the length direction of the side plate to push the contour block to move closer to the top plate.

[0009] The fastening mechanism includes a pressing member configured to exert a pressing force on the magnet block of the magnet in the direction toward the base plate.

[0010] Furthermore, the pushing mechanism preferably includes a lead screw assembly and a push block disposed at the front end of the lead screw assembly. The push block is placed on the base of the magnet. A guide rail is provided on the side plate. Slide bars matching the guide rail are provided on both sides of the push block. The contour block abuts against the front end of the push block.

[0011] Furthermore, preferably, a stop block is provided near the bottom plate of the lead screw assembly on the push block, and the stop block extends downward relative to the top surface of the magnet's base.

[0012] Furthermore, the pushing mechanism preferably includes a fixed plate, and each side plate has a first slot at the end away from the top plate on its inner side. The fixed plate is inserted into two of the first slots, and the lead screw assembly passes through the fixed plate and can move back and forth relative to it.

[0013] Furthermore, the assembly fixture preferably includes a movable inclined guide block, which is inclined towards the top plate by the pushing mechanism, and is used to guide the placement and assembly of the magnet block.

[0014] Furthermore, the fastening mechanism preferably includes a longitudinal support connected between the two side plates, and the pressing member passes through the longitudinal support and is movable in the direction of approaching the magnet block.

[0015] Furthermore, the fastening mechanism preferably includes a long strip pressure plate and a buckle connected to the lower pressure member for fixing the long strip pressure plate, wherein the long strip pressure plate is arranged along the length direction of the magnet block.

[0016] Furthermore, preferably, the top of the side plate is provided with a protrusion, and the protrusion has multiple notches, which are engaged with the longitudinal support.

[0017] Furthermore, preferably, the base plate has fixing holes, which, in conjunction with a fixing component, are used to fix the base of the magnet.

[0018] Furthermore, preferably the bottom plate and the side plate are detachably connected, and a second slot is provided at one end of the inner side of each side plate, and the top plate is inserted into the two second slots.

[0019] The permanent magnet rotor magnet assembly fixture of this utility model has the following beneficial effects:

[0020] 1. Ensuring Assembly Accuracy: Side plates form placement grooves on the base plate that fit the cobalt magnet base. The top plate acts as a front limit for the base. The placement grooves and contour blocks ensure precise positioning and guidance of the magnet blocks during assembly, preventing positional shifts and tilting. Simultaneously, precise control of the pushing and fastening mechanisms guarantees the stability and consistency of assembly accuracy.

[0021] 2. Improved Product Quality: A stable clamping and fastening mechanism ensures the robustness and consistency of the magnet assembly, preventing performance degradation or malfunctions of the permanent magnet motor due to poor assembly. Simultaneously, high-precision assembly also enhances the overall performance and reliability of the motor.

[0022] 3. Enhanced safety: The design of the tooling fully considers safety factors. For example, the design of the stop block prevents potential safety hazards caused by excessive movement of the push block; the detachable connection design also facilitates the maintenance and repair of the tooling. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of one embodiment of the permanent magnet rotor magnet assembly tooling of this utility model;

[0024] Figure 2 This is a schematic diagram of the assembly process of the permanent magnet rotor magnet assembly tooling of this utility model.

[0025] Figure 3 yes Figure 2 A structural diagram from another direction;

[0026] Figure 4 This is a partial exploded view of some components of the permanent magnet rotor magnet assembly tooling of this utility model.

[0027] Figure 5 This is a schematic diagram of the structure of a magnet. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] like Figure 5 As shown, the magnet includes a base 100, a plurality of magnet blocks 300 disposed on the base 100, and a magnet cover 200 fastened to the magnet blocks. This utility model provides a permanent magnet rotor magnet assembly fixture, such as... Figures 1-4 As shown. The assembly fixture for assembling the above-mentioned magnets includes a base plate 10, side plates 20, a top plate 30 disposed at one end of the base plate 10 and connecting the two side plates 20, a plurality of contour blocks 40, a pushing mechanism 50 disposed at the other end of the base plate 10, and a fastening mechanism 60.

[0034] The base plate 10, serving as the foundation of the assembly fixture, is made of a high-strength, corrosion-resistant material. Side plates 20 are fixed to both sides of the base plate 10, and the base plate 10 and side plates 20 are detachably connected, for example, by screws. This detachable connection facilitates quick assembly and disassembly of the fixture. Furthermore, preferably, each side plate 20 has a second slot 23 at one end of its inner side, and the top plate 30 is inserted into two of these second slots 23. The base plate 10 and the side plates 20 define a placement groove 70, which matches the base plate 10 of the magnet. During assembly, the base is placed in the placement groove 70 with one end abutting against the top plate 30, which provides front-end positioning for the base. The base plate 10 has fixing holes for use with fasteners, such as fixing screws, to secure the base of the magnet.

[0035] The contour block 40 is a replica of the magnet block, which can be understood as a square block made by replicating the shape and size of the magnet block. The contour block 40 is placed side by side with the magnet block to be assembled in the placement slot 70. The number and position of the contour block 40 are configured and adjusted according to the actual needs of the magnet block. The pushing mechanism 50 can move along the length of the side plate 20 to push the contour block 40 towards the top plate 30. The fastening mechanism 60 includes a pressing member 61, which is configured to exert a pressing force on the magnet block towards the bottom plate 10.

[0036] During assembly, the side plate 20, top plate 30, and pushing mechanism 50 are assembled onto the base plate 10. The base is placed in the placement groove 70, with one end abutting against the top plate 30. Adhesive is applied to the contact surface between the base and the magnets, applying it to the center of an area the size of one magnet block at a time, leaving the sides untouched. The first magnet block is placed on the inclined surface of the base and abutted against the top plate 30. The remaining unassembled magnet blocks are positioned with contour blocks 40. The pushing mechanism 50 then moves, pushing the contour blocks 40 to ensure the sides of the magnet blocks are fully flush with the top plate 30, guaranteeing proper installation. The pressing component 61 then secures and presses down on the first magnet block, ensuring it is flush with the base plane. Adhesive is applied to the second magnet block before assembly, using the same method as the first application. Adhesive is applied to the assembly location of the second magnet block, and then contour blocks 40 are placed. This process is repeated until all magnet blocks are assembled onto the base.

[0037] In one specific embodiment, the pushing mechanism 50 includes a lead screw assembly 51 and a front push block 52 disposed at the front end of the lead screw assembly 51. The front push block 52 is placed on the base of the magnet. A guide rail 24 is provided on the side plate 20 along its length. Sliding strips matching the guide rail 24 are provided on both sides of the front push block 52. The contour block 40 abuts against the front end of the front push block 52. The lead screw assembly 51 pushes the front push block 52 to slide along the guide rail, thereby driving the square block to move towards the top plate 30, thereby pushing the side of the first magnet block to be assembled to be completely in contact with the top plate 30, or pushing the magnet block to be assembled to be in contact with the side of the previous magnet block. In one specific embodiment, the total stroke of the front push block 52 is 60mm at most, and after assembly, there is a 0.5mm gap between the front push block 52 and the edge of the base.

[0038] In one specific embodiment, a stop block is provided on the bottom plate 10 of the lead screw assembly 51 near the push block 52. The stop block extends downward relative to the top surface of the base of the magnet and stops the push block 52 when it reaches the maximum stroke to prevent the lead screw assembly from having excessive pushing force and damaging the base.

[0039] In one specific embodiment, the pushing mechanism 50 includes a fixed plate 53, and a first slot 22 is provided on the inner side of each side plate 20 away from the top plate 30. The fixed plate 53 is inserted into two of the first slots 22, and the lead screw assembly 51 passes through the fixed plate 53 and can move back and forth relative to it.

[0040] In one specific embodiment, the assembly fixture further includes a movable inclined guide block 80. The inclined guide block 80 is inclined towards the top plate 30 by the pushing mechanism 50. The inclined guide block 80 is used to guide the placement and assembly of the magnet block. During assembly, glue is applied to the contact surfaces between the base and the magnet block, applying glue to the center of an area the size of one magnet block at a time, leaving the sides untouched to facilitate the subsequent sliding of the inclined guide block 80. After applying the glue, the inclined guide block 80 is placed on the base, pressing against the top plate 30. The magnet block is placed on the inclined surface of the base and adheres to the top plate 30, avoiding direct contact with the glue initially. Then, a contour block 40 is placed between the forward pushing blocks 52. After the contour block 40 is in place, the inclined guide block 80 is gradually slid out, allowing the magnet block to slowly adhere to the base. After the inclined guide block 80 is completely slid out, remove it and then push the mechanism 50 to ensure that the side of the magnet block is fully aligned with the top plate 30 via the contour block 40, ensuring proper installation. Apply adhesive to the second magnet block before assembly, using the same method as the first application. Apply adhesive to the assembly location of the second magnet block, and then place the inclined guide component and contour block 40 in the same manner. The inclined guide block 80 speeds up the assembly process and saves assembly time.

[0041] In one specific embodiment, the fastening mechanism 60 includes a longitudinal support 90 connected between the two side plates 20. For example, a protrusion 21 is provided at the top of each side plate 20, and multiple notches 211 are formed on each protrusion 21, which engage with the longitudinal support 90. The pressing member 61 passes through the longitudinal support 90 and can move towards the magnet block. After the magnet block is assembled in the longitudinal direction, the longitudinal support 90 and the pressing member 61 press the magnet block down, allowing it to fit against the base plane. Excess adhesive is promptly cleaned after the magnet block is assembled.

[0042] In one specific embodiment, the fastening mechanism 60 further includes a long strip pressure plate 62 and a buckle 63 connected to the lower pressure member 61 for fixing the long strip pressure plate 62. The buckle 63 fixes the position of the long strip pressure plate 62. The long strip pressure plate is arranged along the length direction of the magnet block. The arrangement of the long strip pressure plate prevents the magnet from flipping upwards due to repulsive force during the pushing process. After the magnet is pushed into place by the pushing mechanism 50, the lower pressure member 61 is tightened in the height direction, and the lower pressure magnet block is in place. After assembly, excess glue should be cleaned up promptly.

[0043] In a specific embodiment, the assembly fixture structure and process of the permanent magnet rotor magnet are as follows: 1) Two side plates 20 are fixed to the base plate 10 with screws, and the upper outer end is provided with a protrusion 21, forming a right-angled plate in the shape of a "7". 2) Two fixing holes are opened on the base plate 10, which are used to fix the base of the cobalt magnet by cooperating with the fixing parts. 3) The top plate 30 is inserted into the second slot 23 on the inner side of the side plate 20, which provides positioning and support for the cobalt magnet base in the length direction, and avoids damage to the threaded hole at the lower end of the base by excessive screw pushing force. 4) The pushing mechanism 50 includes a screw assembly and a front push block 52. The front push block 52 is assembled first, and then the screw assembly is assembled. The maximum stroke of the front push block 52 is 60mm. After assembly, there is a 0.5mm gap between the front push block 52 and the edge of the base. 5) Glue is applied to the contact surface between the base and the magnet. Each time, glue is applied to the middle part of an area the size of a magnet, and no glue is applied to the sides to facilitate the oblique sliding of the base. Apply glue to the middle area, but not to the sides (approximately 10mm). 6) First, place the angled guide block 80 against the top plate 30. Place the first magnet on the surface of the angled guide block 80 and attach it to the top plate 30 to avoid direct contact with the glue. Place the four contour blocks 40 in place, and gradually slide the angled guide block 80 out, allowing the magnet to slowly adhere to the base. After completely sliding out the angled guide block 80, remove it, and then push the lead screw to ensure the side of the magnet is fully attached to the top plate 30 via the contour blocks 40, ensuring proper installation. Of course, the angled guide block 80 can be omitted, with similar installation results, but its placement can save slightly time. 7) After assembling the first magnet in the longitudinal direction, use the longitudinal bracket 90 and the pressing part 61 to press the magnet down, allowing it to adhere to the base plane. Clean up any excess glue promptly after assembling the first magnet. 8) Apply glue to the assembly location of the second magnet block, using the same method as the first application. Then, place the inclined base and the contour block 40. 9) Slide out the inclined guide to allow the second magnet block to gradually stabilize under the repulsive force, and then place the remaining contour blocks 40. 10) Place the long strip pressure plate 62, buckle 63, lower pressure piece 61, and longitudinal support 90. After the magnet block is pushed into place by the screw, tighten the lower pressure piece 61 in the height direction to press the magnet block into place. Clean up any excess glue after assembly. 11) Repeat the above steps to assemble the first 5 magnet blocks, and wipe away any excess glue promptly. 12) Apply glue to the assembly area of ​​the last magnet block. 13) Assemble the sixth magnet block: Slowly place the magnet block in the assembly location. After stabilizing under the repulsive force, first assemble the longitudinal support 90 and the lower pressure piece 61 to prevent the magnet block from bouncing up due to the repulsive force during the pushing process. Then, gradually push the magnet block into place using the screw. During the process of pushing the magnet block, the lower pressing part 61 and the buckle 63 should be tightened in time to ensure that the magnet is assembled in place in both directions. After assembly, clean up any excess glue in time.

[0044] The permanent magnet rotor magnet assembly fixture of this utility model has the following beneficial effects:

[0045] 1. Ensuring Assembly Accuracy: The side plate 20 forms a placement groove on the base plate that fits the cobalt magnet base. The top plate acts as a front limit for the base, and the design of the contour block ensures the precise positioning and guidance of the magnet block during assembly, preventing problems such as positional deviation and tilting. At the same time, the precise control of the pushing mechanism and the fastening mechanism also ensures the stability and consistency of assembly accuracy.

[0046] 2. Improved Product Quality: A stable clamping and fastening mechanism ensures the robustness and consistency of the magnet assembly, preventing performance degradation or malfunctions of the permanent magnet motor due to poor assembly. Simultaneously, high-precision assembly also enhances the overall performance and reliability of the motor.

[0047] 3. Enhanced safety: The design of the tooling fully considers safety factors. For example, the design of the stop block prevents potential safety hazards caused by excessive movement of the push block; the detachable connection design also facilitates the maintenance and repair of the tooling.

[0048] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They do not limit the scope of protection of this utility model. All equivalent changes and modifications made within the scope of the claims of this utility model should fall within the scope of the claims of this utility model.

Claims

1. A fixture for assembling permanent magnet rotor magnets, the permanent magnet rotor magnets comprising a base, a plurality of magnet blocks disposed on the base, and magnet covers fastened to the magnet blocks, characterized in that, The assembly fixture includes a base plate, side plates fixed to both sides of the base plate, a top plate disposed at one end of the base plate and connecting the two side plates, several contour blocks, a pushing mechanism disposed at the other end of the base plate, and a fastening mechanism. The base plate and the side plates on both sides define a placement groove, which matches the base of the magnet. The copying block is a copy of the magnetic steel block. The copying block and the magnetic steel block to be assembled are placed side by side in the placement slot. The pushing mechanism can move along the length of the side plate to push the copying block towards the top plate. The fastening mechanism includes a pressing member configured to exert a pressing force on the magnet block toward the base plate.

2. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The pushing mechanism includes a lead screw assembly and a push block disposed at the front end of the lead screw assembly. The push block is placed on the base of the magnet. A guide rail is provided on the side plate. Slide bars matching the guide rail are provided on both sides of the push block. The contour block abuts against the front end of the push block.

3. The permanent magnet rotor magnet assembly fixture according to claim 2, characterized in that, A stop block is provided near the bottom plate of the lead screw assembly on the push block, and the stop block extends downward relative to the top surface of the magnet's base.

4. The permanent magnet rotor magnet assembly fixture according to claim 2, characterized in that, The pushing mechanism also includes a fixed plate, and each side plate has a first slot at the end away from the top plate. The fixed plate is inserted into two of the first slots, and the lead screw assembly passes through the fixed plate and can move back and forth relative to it.

5. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The assembly fixture also includes a movable inclined guide block, which is tilted toward the top plate by the pushing mechanism. The inclined guide block is used to guide the placement and assembly of the magnet blocks.

6. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The fastening mechanism includes a longitudinal support connected between the two side plates, and the pressing member passes through the longitudinal support and is movable in the direction of approaching the magnet block.

7. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The fastening mechanism further includes a long strip pressure plate and a buckle connected to the lower pressure member for fixing the long strip pressure plate, wherein the long strip pressure plate is arranged along the length direction of the magnet block.

8. The permanent magnet rotor magnet assembly fixture according to claim 6, characterized in that, The top of the side plate is provided with a protruding strip, and each protruding strip has multiple notches, which are engaged with the longitudinal support.

9. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The base plate has fixing holes, which, in conjunction with fixing components, are used to fix the base of the magnet.

10. The permanent magnet rotor magnet assembly fixture according to claim 1, characterized in that, The bottom plate and the side plate are detachably connected. Each side plate has a second slot at one end of its inner side. The top plate is inserted into two of the second slots.

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