Explosion-proof permanent magnet integrated machine rotor mechanism

Abstract

The utility model provides an anti -explosion permanent magnet integrated machine rotor mechanism, including shaft subassembly, first permanent magnet, second permanent magnet, third permanent magnet, fourth permanent magnet, equal length stud bolt, rotor punching piece and rotor pressure ring, rotor punching piece and rotor pressure ring are matched in the shaft subassembly, and rotor punching piece is stacked with rotor pressure ring, and the outer circle of rotor punching piece and rotor pressure ring is provided with the stacking hole, and equal length stud bolt passes through the stacking hole, and dovetail groove is uniformly arranged on the rotor core, and first permanent magnet, second permanent magnet, third permanent magnet and fourth permanent magnet are layered and matched in the dovetail groove, the rotor punching piece of the utility model is stacked with rotor pressure ring, and the utility model is installed equal length stud bolt after the rotor pressure ring close to the outer circle of rotor and the rotor punching piece are punched, and the fastening is carried out, at this moment, the outer circle of rotor almost has no tooth part and is opened, and thus, the utility model is used to guarantee that the rotor of larger outer diameter is stacked into the rotor that meets the use.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof permanent magnet integrated machine production technology, and in particular to an explosion-proof permanent magnet integrated machine rotor mechanism. Background Technology

[0002] The explosion-proof permanent magnet integrated machine has a special structure. In response to the current operating conditions that require high-speed and high-power motors for explosion-proof permanent magnet integrated machines, the iron core has evolved from a slender shape to a short and thick shape. This has resulted in the outer diameter of the rotor that transmits kinetic energy becoming larger and larger. The manufacturing method of pressing the rotor near the shaft in the past can no longer meet the needs of manufacturing rotors with larger diameters. Now, it is necessary to fix the inner and outer circles of the rotor laminations at the same time to ensure that the rotor laminations are stacked into a rotor that meets the requirements of use. This method of fixing the inner and outer circles of the rotor laminations at the same time can ensure that the explosion-proof permanent magnet integrated rotor meets the requirements of use. Utility Model Content

[0003] The purpose of this invention is to provide an explosion-proof permanent magnet integrated rotor mechanism that can simultaneously fix the inner and outer circles of the rotor laminations.

[0004] An explosion-proof permanent magnet integrated rotor mechanism includes a shaft assembly, a first permanent magnet, a second permanent magnet, a third permanent magnet, a fourth permanent magnet, equal-length double-ended studs, rotor laminations, and a rotor retaining ring. The rotor laminations and rotor retaining ring are mounted on the shaft assembly. The rotor laminations are stacked by the rotor retaining ring. At least three stacking holes are provided on the outer circumference of the rotor laminations and the rotor retaining ring. The equal-length double-ended studs pass through the stacking holes. After the rotor retaining ring and the rotor laminations are fastened and stacked, a rotor core is formed. Symmetrical and uniformly arranged dovetail grooves are machined on the rotor core. The first permanent magnet, the second permanent magnet, the third permanent magnet, and the fourth permanent magnet are layered and mounted in the dovetail grooves.

[0005] Preferably, the equal-length double-ended studs are fitted with spring washers and flat washers.

[0006] Preferably, a balance ring is welded to the front end of the shaft assembly. The balance ring is filled with liquid brine. When the motor accelerates, the liquid brine moves in the opposite direction due to inertia, generating a reverse hydraulic torque to counteract the eccentric force caused by the accumulation of foreign objects and prevent the inner cylinder of the motor from colliding with the outer cylinder.

[0007] Preferably, the rotor core is equipped with a balance block.

[0008] The original rotor was a slender rotor, which only required spot welding at the connection between the shaft and the rotor pressure ring to achieve a clamping effect. However, the current rotor has a larger outer diameter. After spot welding at the connection between the shaft and the rotor pressure ring, it was found that the outer diameter teeth of the rotor had excessive spring-off, making the rotor unsuitable for use. This invention includes a shaft assembly, a first permanent magnet, a second permanent magnet, a third permanent magnet, a fourth permanent magnet, equal-length double-ended studs, rotor laminations, and a rotor pressure ring. The rotor laminations are stacked using the rotor pressure ring. At least three stacking holes are provided on the outer diameters of the rotor laminations and the rotor pressure ring. The equal-length double-ended studs pass through these stacking holes. After the rotor pressure ring and rotor laminations are tightly stacked, a rotor core is formed. In this invention, holes are drilled between the rotor pressure ring and rotor laminations near the outer diameter of the rotor, and equal-length double-ended studs are installed for fastening. At this point, there is almost no spring-off of the outer diameter teeth of the rotor. Thus, this invention ensures that a rotor with a larger outer diameter can be stacked to meet the requirements of use. Attached Figure Description

[0009] Figure 1 A schematic diagram of the rotor mechanism of an explosion-proof permanent magnet integrated machine, taken from an exploded perspective. Figure 2 A structural schematic diagram of the rotor mechanism of an explosion-proof permanent magnet integrated machine, taken from another perspective; In the figure: Shaft assembly 1, First permanent magnet 2, Second permanent magnet 3, Third permanent magnet 4, Fourth permanent magnet 5, Equal length double-ended stud 6, Rotor lamination 7, Rotor pressure ring 8, Spring washer 9, Flat washer 10, Balance ring assembly 11, Balance block 12. Detailed Implementation

[0010] To make the technical solution of this utility model easier to understand, the technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0011] Please also refer to Figure 1 and Figure 2 The rotor mechanism of the explosion-proof permanent magnet integrated machine includes a shaft assembly 1, a first permanent magnet 2, a second permanent magnet 3, a third permanent magnet 4, a fourth permanent magnet 5, equal-length double-ended studs 6, rotor laminations 7, and a rotor retaining ring 8. The rotor laminations 7 and rotor retaining ring 8 are mounted on the shaft assembly 1. The rotor laminations 7 are stacked by the rotor retaining ring 8. At least three stacking holes are provided on the outer circumference of the rotor laminations 7 and the rotor retaining ring 8. The equal-length double-ended studs 6 pass through the stacking holes. After the rotor retaining ring 8 and the rotor laminations 7 are fastened and stacked, a rotor core is formed. Symmetrical and evenly arranged dovetail grooves are machined on the rotor core. The first permanent magnet 2, the second permanent magnet 3, the third permanent magnet 4, and the fourth permanent magnet 5 are layered and mounted in the dovetail grooves.

[0012] The equal-length double-ended stud 6 is equipped with a spring washer 9 and a flat washer 10. A balance ring assembly 11 is welded to the front end of the shaft assembly 1. The balance ring assembly 11 is filled with liquid brine. When the motor accelerates, the liquid brine moves in the opposite direction due to inertia, generating a reverse hydraulic torque to counteract the eccentric force caused by the accumulation of foreign objects and prevent collision between the inner and outer cylinders of the motor. A balance block 12 is installed on the rotor core. The main function of the balance block 12 is to reduce the vibration and noise of the rotor core during operation, improving the stability, reliability, and service life of the equipment.

[0013] The original rotor was a slender rotor, which only required spot welding at the connection between the shaft and the rotor pressure ring to achieve a clamping effect. Now, the rotor's outer diameter is larger, and after spot welding at the connection between the shaft and the rotor pressure ring, it was found that the outer diameter teeth of the rotor spring back significantly, making the rotor unsuitable for use. This invention includes a shaft assembly 1, a first permanent magnet 2, a second permanent magnet 3, a third permanent magnet 4, a fourth permanent magnet 5, equal-length double-ended studs 6, rotor laminations 7, and a rotor pressure ring 8. The rotor laminations 7 are stacked using the rotor pressure ring 8. At least three stacking holes are provided on the outer diameters of the rotor laminations 7 and the rotor pressure ring 8. The equal-length double-ended studs 6 pass through these stacking holes. After the rotor pressure ring 8 and the rotor laminations 7 are tightly stacked, a rotor core is formed. In this invention, holes are drilled between the rotor pressure ring 8 and the rotor laminations 7 near the outer diameter of the rotor, and equal-length double-ended studs 6 are installed for fastening. At this point, there is almost no springback of the outer diameter teeth of the rotor. Thus, this invention ensures that a rotor with a larger outer diameter can be stacked to meet the requirements of use.

[0014] It should be noted that the embodiments described herein are only some embodiments of this utility model, and not all implementations of this utility model. These embodiments are merely illustrative and are intended only to provide a more intuitive and clear way of understanding the content of this utility model, not to limit the technical solutions described herein. All other implementation methods that can be conceived by those skilled in the art without creative effort, as well as other simple substitutions and variations of the technical solutions of this utility model, without departing from the concept of this utility model, are within the protection scope of this utility model.

Claims

1. An explosion-proof permanent magnet integrated rotor mechanism, characterized in that: The rotor mechanism of the explosion-proof permanent magnet integrated machine includes a shaft assembly, a first permanent magnet, a second permanent magnet, a third permanent magnet, a fourth permanent magnet, equal-length double-ended studs, rotor laminations, and a rotor retaining ring. The rotor laminations and rotor retaining ring are mounted on the shaft assembly. The rotor laminations are stacked by the rotor retaining ring. At least three stacking holes are provided on the outer circumference of the rotor laminations and rotor retaining ring. The equal-length double-ended studs pass through the stacking holes. After the rotor retaining ring and rotor laminations are fastened and stacked, a rotor core is formed. Symmetrical and evenly arranged dovetail grooves are machined on the rotor core. The first permanent magnet, the second permanent magnet, the third permanent magnet, and the fourth permanent magnet are layered and mounted in the dovetail grooves.

2. The explosion-proof permanent magnet integrated rotor mechanism as described in claim 1, characterized in that: Equal-length double-ended studs are fitted with spring washers and flat washers.

3. The explosion-proof permanent magnet integrated rotor mechanism as described in claim 2, characterized in that: The front end of the shaft assembly is fitted with a balance ring welded together, and the balance ring weld is filled with liquid brine.

4. The explosion-proof permanent magnet integrated rotor mechanism as described in claim 3, characterized in that: The rotor core is equipped with balance blocks.

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