Silicon steel sheet for permanent magnet electric roller

Abstract

The utility model discloses a silicon steel sheet for a permanent magnet electric roller, which belongs to the technical field of permanent magnet electric rollers and comprises a silicon steel sheet body, coil grooves, positioning grooves, mounting holes, positioning key grooves and positioning flanges, the coil grooves are uniformly arranged on the upper edge of the silicon steel sheet body, the positioning key grooves are arranged on the right side of the lower edge of the silicon steel sheet body, and the positioning groove is arranged in the middle of the left side of the silicon steel sheet body. A mounting hole is formed in the middle lower part of the right side; the positioning grooves are matched with the positioning flanges of the adjacent silicon steel sheets, so that the silicon steel sheets are connected to form a circular ring; the mounting holes are used for mounting screws, so that the silicon steel sheet circular rings are overlapped together to form a silicon steel sheet cylinder; the positioning key grooves correspond to the stator key grooves, the silicon steel sheet barrel and the stator roller are positioned and fixed through the stator flat keys, and the silicon steel sheet barrel is arranged on the roller stator in a sleeving mode. The silicon steel sheet is convenient to install, accurate in positioning and improved in electromagnetic performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet electric rollers, and in particular relates to a silicon steel sheet for a permanent magnet electric roller. Background Art

[0002] Permanent magnet electric rollers are essential drive components for underground coal mine belt conveyors. Traditionally, they consist of a motor, reducer, coupling, and roller. With continuous technological advancements, a permanent magnet electric roller has been developed that integrates the motor, coupling, and roller into a single unit and utilizes a frequency converter for speed regulation. These rollers are highly popular among users for their simple structure, maintenance-free operation, and long service life. However, the processing and installation of the silicon steel sheets within permanent magnet electric rollers are currently complex, and the positioning of the silicon steel sheets is not precise enough. This compromises the overall performance of the permanent magnet electric roller, particularly in environments requiring high magnetic field stability and precision. Utility Model Content

[0003] The utility model provides a silicon steel sheet for a permanent magnet electric roller. The shape and structure of the silicon steel sheet for the permanent magnet electric roller are optimized, so that the silicon steel sheet can be easily processed, stacked and assembled. The formed silicon steel sheet cylinder is accurately positioned, and the overall performance of the permanent magnet electric roller is improved.

[0004] The technical solution of the utility model is: a silicon steel sheet for a permanent magnet electric roller, comprising a silicon steel sheet body, coil grooves, positioning grooves, mounting holes, positioning keyways, and positioning flanges, wherein the coil grooves are evenly arranged on the upper edge of the silicon steel sheet body, the positioning keyways are arranged near the right side of the lower edge, the positioning grooves are arranged in the middle of the left side, the positioning flanges are arranged in the middle of the right side, and the mounting holes are arranged in the middle and lower part; the positioning grooves cooperate with the positioning flanges of adjacent silicon steel sheets to connect the silicon steel sheets to form a circular ring; the mounting holes are used to install screws so that the silicon steel sheet rings are superimposed together to form a silicon steel sheet cylinder; the positioning keyways correspond to the stator keyways, and the silicon steel sheet cylinder is positioned and fixed to the stator roller by the stator flat key, and the silicon steel sheet cylinder is sleeved on the roller stator.

[0005] Furthermore, the coil slots are arranged in a rectangular shape, with 11 in number, for installing formed coils.

[0006] Furthermore, the number of the mounting holes is set to 2.

[0007] Furthermore, the outer radius of the silicon steel sheet is 556 mm, and the inner radius is 451.5 mm.

[0008] Furthermore, the silicon steel sheet is an alloy steel with a silicon content of 3%-4.5% and a thickness of 0.35-0.5 mm.

[0009] Furthermore, the stacking gap between the silicon steel sheets is 0.02-0.05 mm.

[0010] Furthermore, a phosphate coating, a ceramic coating or an organic coating is used between the silicon steel sheets.

[0011] Furthermore, the distance between the outer side of the silicon steel sheet cylinder and the permanent magnet embedded in the permanent magnet drum is 1.5 mm.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The shape and structure design of the silicon steel sheet of the utility model is suitable for processing methods such as stamping and shearing, which avoids excessively high processing costs and ensures processing accuracy; the silicon steel sheet mounting holes and screws are combined to facilitate the stacking and fastening of the silicon steel sheets, and the positioning grooves are matched with the positioning flanges of the adjacent silicon steel sheets to form a tight and stable silicon steel sheet cylindrical iron core structure, which is easy to stack and assemble.

[0014] 2. The silicon steel sheet coil slots are stacked flat, which is convenient for embedding the molded coil. The coil slot partitions extend outward, increasing the contact area with the air, which is beneficial to the heat dissipation of the coil or silicon steel sheet cylinder.

[0015] 3. The silicon steel sheet positioning keyway corresponds to the stator keyway. The silicon steel sheet cylinder and the stator drum are fixed by the stator flat key, which facilitates the positioning and installation of the silicon steel sheet cylinder and greatly improves work efficiency.

[0016] 4. The silicon steel sheets are thin and have small gaps. The insulating coating is set and the stacking assembly is precise, stable and complete, which ensures good closure of the magnetic flux, reduces leakage magnetic field and uniform magnetic field distribution, effectively reduces eddy current loss, and improves the overall performance of permanent magnet electric drum products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a silicon steel sheet for a permanent magnet electric roller according to the present invention.

[0018] Figure 2 This is a schematic diagram of the assembly of silicon steel sheets for a permanent magnet electric roller according to the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of a silicon steel sheet cylinder for a permanent magnet electric roller in the utility model.

[0020] Figure 4 This is a schematic diagram of the connection between the silicon steel sheet cylinder and the drum stator for a permanent magnet electric drum of the utility model.

[0021] Figure 5 Schematic diagram of the permanent magnet drum structure.

[0022] Figure 6 This is a schematic diagram of the permanent magnet electric drum structure.

[0023] In the figure: 100, silicon steel sheet cylinder, 200, drum stator, 300, permanent magnet drum, 400, permanent magnet electric drum, 1, silicon steel sheet body, 2, coil slot, 3, positioning groove, 4, mounting hole, 5, positioning keyway, 6, positioning flange, 7, stator keyway, 8, customized flat key, 9, permanent magnet drum cylinder, 10, permanent magnet, 11, screw. DETAILED DESCRIPTION

[0024] The following will be combined with the Figures 1-6 The present invention is clearly and completely described in the following examples. It is obvious that the examples described are only a portion of the present invention, not all of the present invention. All other examples derived by persons of ordinary skill in the art based on the examples in the present invention without creative effort fall within the scope of protection of the present invention. Implementation methods of the present invention include, but are not limited to, the following examples.

[0025] As attached Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the present embodiment is a silicon steel sheet for a permanent magnet electric drum, comprising a silicon steel sheet body 1, coil slots 2, positioning grooves 3, mounting holes 4, positioning key slots 5, and positioning flanges 6. Coil slots 2 are evenly arranged on the upper edge of the silicon steel sheet body 1, positioning key slots 5 are arranged on the lower edge near the right side, positioning grooves 3 are arranged in the middle of the left side, positioning flanges 6 are arranged in the middle of the right side, and mounting holes 4 are arranged in the middle and lower part; the coil slots 2 are designed to be rectangular and are used to install formed coils. The positioning grooves 3 cooperate with the positioning flanges 6 of adjacent silicon steel sheets to play a role in precise positioning and fixing; the mounting holes 4 are used to install screws 11, and the silicon steel sheets are stacked and assembled together to form a silicon steel sheet barrel 100. The positioning key slots 5 correspond to the stator key slots 7. The silicon steel sheet barrel 100 and the stator drum 200 are positioned and fixed by the stator flat key 8, and the silicon steel sheet barrel 100 is sleeved on the stator drum 200.

[0026] In the above embodiment, the silicon steel sheets are selected from alloy steel with a silicon content of 3%-4.5% to increase the resistivity of the silicon steel sheets and reduce eddy current losses; the thickness of the silicon steel sheets is selected to be 0.35-0.5mm, which shortens the eddy current path, increases the eddy current resistance, and effectively reduces the eddy current losses; the gap between the stacked silicon steel sheets is set to 0.02-0.05mm, which effectively reduces the magnetic resistance of the silicon steel sheets, reduces eddy current losses, and improves the electromagnetic performance of the equipment; phosphate coating, ceramic coating or organic coating is used between the silicon steel sheets to ensure good insulation between the silicon steel sheets and prevent the formation of large eddy current loops between the silicon steel sheets.

[0027] As attached Figure 5 、 Figure 6As shown, the permanent magnet roller 300 comprises a permanent magnet roller body 9 and permanent magnets 10. The permanent magnets 10 are small, curved magnets, divided into two types: N and S, based on the inner arc surface. During assembly, the N and S poles are adjacent, forming one row of N-pole magnets and another row of S-pole magnets. This creates N-pole and S-pole magnetic fields that correspond to the electromagnetic field of the coil, leveraging the mutual magnetic force to cause rotation. A gap of 0.2-1.5mm exists between the outer side of the silicon steel sheet body 100 and the permanent magnet roller 10, ensuring stable torque output by the permanent magnet motor roller. The permanent magnet roller 300 is sleeved onto the outer side of the silicon steel sheet body 100 and the stator roller 200, forming the permanent magnet motor roller 400.

[0028] The utility model is a permanent magnet electric drum with silicon steel sheet installation steps:

[0029] S1, silicon steel sheet bonding, according to needs, first use special glue to bond the silicon steel sheets into blocks and stack them together. The length and diameter of the silicon steel sheet cylinder are related to the product specifications. The number of stacked silicon steel sheets and the size of the diameter are set according to the product specifications.

[0030] S2, barrel assembly: After completing step S1, the bonded silicon steel blocks are installed on the screw. The adjacent silicon steel blocks are matched with the positioning flanges through the positioning grooves. After completing one circle, the next circle is carried out to ensure that the positioning keyways are aligned. After the assembly is completed, the silicon steel sheet barrel is formed.

[0031] S3, press-fitting operation. After completing step S2, the silicon steel sheet cylinder is first preheated, and then the silicon steel sheet cylinder is press-fitted onto the stator using a four-column press, and the silicon steel sheet cylinder 100 and the stator roller 200 are positioned and fixed by the stator flat key 8.

Claims

1. A silicon steel sheet for a permanent magnet electric drum, characterized in that: The invention comprises a silicon steel sheet body (1), a coil groove (2), a positioning groove (3), a mounting hole (4), a positioning key groove (5), and a positioning flange (6). The upper edge of the silicon steel sheet body (1) is evenly provided with the coil groove (2), the lower edge is provided with a positioning key groove (5) near the right side, the middle part of the left side is provided with a positioning groove (3), the middle part of the right side is provided with a positioning flange (6), and the middle and lower part is provided with a mounting hole (4); the positioning groove (3) cooperates with the positioning flange (6) of the adjacent silicon steel sheet to connect the silicon steel sheets to form a circular ring; the mounting hole (4) is used to install a screw (11) so that the silicon steel sheet circular rings are superimposed and assembled together to form a silicon steel sheet barrel (100); the positioning key groove (5) corresponds to the stator key groove (7), and the silicon steel sheet barrel (100) and the stator roller (200) are positioned and fixed by the stator flat key (8), and the silicon steel sheet barrel (100) is sleeved on the stator roller (200).

2. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The coil slots (2) are arranged in a rectangular shape, and there are 11 of them, for installing formed coils.

3. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The number of the mounting holes (4) is 2.

4. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The outer radius of the silicon steel sheet is 556 mm, and the inner radius is 451.5 mm.

5. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The silicon steel sheet is an alloy steel with a silicon content of 3%-4.5% and a thickness of 0.35-0.5 mm.

6. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The stacking gap of the silicon steel sheets is 0.02-0.05 mm.

7. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: Phosphate coating, ceramic coating or organic coating is used between the silicon steel sheets.

8. The silicon steel sheet for a permanent magnet electric drum according to claim 1, characterized in that: The distance between the outer side of the silicon steel sheet cylinder (100) and the permanent magnet (10) embedded in the permanent magnet roller (300) is 1.5 mm.

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