CN210839205U

CN210839205U - Rotor balance structure

Info

Publication number: CN210839205U
Application number: CN201921385352.8U
Authority: CN
Inventors: 陈佳晋
Original assignee: Wuxi Dongjing Electric Micro Motor Co ltd
Current assignee: Wuxi Dongjing Electric Micro Motor Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-06-23
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a rotor balanced structure, including iron core, magnetite, copper, soldering tin, the rotor both sides are equipped with the copper, the external diameter of copper is the same with the external diameter of rotor both sides, the copper sets up two, and two copper are fixed respectively in the both sides of rotor, be provided with soldering tin on the copper surface, the copper is the ring annular structure, and the copper passes the axle center, soldering tin sets up a plurality ofly, and when balancing the rotor, with the adhesive force of soldering tin with copper, can avoid droing, the soldering tin quality is more balanced muddy height, and usable less volume is balanced, and increase of service life is applicable to balanced multiple rotor, saves the cost.

Description

Rotor balance structure

Technical Field

The utility model belongs to the electrical equipment field especially relates to a rotor balance structure.

Background

Due to the influence of uneven material, process errors, uneven deformation of rotor blades, uneven wear or local chipping, etc., there is always an imbalance on the rotor. Rotor imbalance is a major source of excitation for the engine. Imbalance causes rotor vibration, accelerates wear of components such as bearings, shaft seals, etc., and reduces the service life and efficiency of the machine. For this reason, the rotor needs to be balanced during engine manufacture or maintenance, even during operation. The dynamic balance is to change the mass distribution of the rotor by means of removing or adding weight to the rotor, so as to reduce the rotor vibration caused by eccentric centrifugal force of center of mass or the dynamic load acting on the bearing to the allowable range, and to reach the aim of smooth running of the engine.

In general, rotor charging is done when dynamic balancing is necessary, otherwise vibrations and noise are created when the motor is running.

The balance mode is divided into two modes, 1, material removal balance is realized, a hole is processed on the shaft center by a drill, but the method is not suitable for processing the iron core lamination; 2. the feed is balanced, and the balance mud is stuck to the edge of the rotor, but the method is easy to cause the falling risk due to oil stain.

In the application number: CN201711431958.6, filed as follows: 20171226, the name is: CN107896019A discloses a skewed slot type balance ring rotor structure and its balance manufacturing method, which includes a rotating shaft, a rotor core, a rotor balance ring, a retaining ring and screws, wherein the outer surface of the rotating shaft is in interference connection with the rotor core, the rotor balance ring is in interference connection with the outer surface of the end of the rotating shaft, the outer surface of the rotor balance ring is provided with a round chute, the inner wall of the chute is provided with a plurality of toothed grooves and the inner wall is an inclined plane, the outer surface of the rotor balance ring is provided with a plurality of first threaded holes, the surface of the retaining ring is provided with a second threaded hole matched with the first threaded hole, the retaining ring is mounted on the rotor balance ring by screws, and the chute is internally used for pasting balance mud.

But the balance mud has lower mass, and if more mass is needed, the volume is larger, and simultaneously, the balance mud can fall off due to oil stain.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a rotor balance structure.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a rotor balanced structure, includes iron core 2, magnetite 1, copper 3, soldering tin 5, the rotor both sides are equipped with copper 3, the external diameter of copper 3 is the same with the external diameter of rotor both sides, copper 3 sets up two, and two copper 3 are fixed respectively in the both sides of rotor, be provided with soldering tin 5 on the 3 surfaces of copper, copper 3 is the loop configuration, and copper 3 passes axle center 6, soldering tin 5 sets up a plurality ofly.

Preferably, the magnet 1 is embedded in the core 2.

Preferably, the copper plate 3 is fixed to a screw fixed to the iron core 2 of the rotor by a nut 4.

Preferably, the soldering tin 5 is fixed on the copper plate 3 by heating the soldering tin through an electric soldering iron.

The utility model has the advantages that:

when the rotor is balanced, the rotor can be prevented from falling off by the adhesive force of the soldering tin and the copper, the soldering tin quality is higher than that of the balance mud, the balance can be realized by using a smaller volume, the service life is prolonged, the rotor balancing device is suitable for balancing various rotors, and the cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of a rotor balancing structure.

Detailed Description

The technical scheme of the utility model is further described with the attached drawings:

In this embodiment, the magnet 1 is preferably embedded in the core 2.

In this embodiment, the copper plate 3 is preferably fixed to a screw fixed to the iron core 2 of the rotor by a nut 4.

In this embodiment, preferably, the soldering tin 5 is fixed to the copper plate 3 by heating the soldering tin with an electric soldering iron.

This balanced structure, the rotor both sides are with screw, the fixed copper of nut to fix on the copper with electric iron heating soldering tin, because of soldering tin and copper sheet adhesion reinforce, soldering tin is difficult for droing at the rotor rotation in-process, does not have the risk of droing. The balance mud is replaced by the soldering tin, so that the mass is large, and the balance volume can be reduced when the rotor is balanced. And the soldering tin is easy to be jointed with the copper plate and is not easy to be jointed with other materials, so that the position of the processing station can be fixed, and the processing error place of an operator is avoided. The adhesion force of the soldering tin and the copper is utilized to avoid falling off, the quality of the soldering tin is higher than that of the balance mud, and the soldering tin can be balanced by a smaller volume.

Finally, it should be noted that:

the skilled person can, with reference to the present disclosure, carry out the method and carry out its application, it being expressly noted that all similar substitutes and modifications apparent to the skilled person are deemed to be included within the present invention. The method and application of the present invention have been described in terms of preferred embodiments, and it will be apparent to those skilled in the art that the techniques of the present invention may be practiced and used without departing from the spirit and scope of the present invention by modifying or otherwise appropriately changing or combining the various methods and applications of the present invention.

The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.

Claims

1. A rotor balance structure characterized by: including iron core (2), magnetite (1), copper (3), soldering tin (5), the rotor both sides are equipped with copper (3), the external diameter of copper (3) is the same with the external diameter of rotor both sides, copper (3) set up two, and the both sides at the rotor are fixed respectively in two copper (3), be provided with soldering tin (5) on copper (3) surface, copper (3) are the ring annular structure, and axle center (6) are passed in copper (3), soldering tin (5) set up a plurality ofly.

2. The rotor balancing structure of claim 1, wherein: the magnet (1) is embedded in the iron core (2).

3. The rotor balancing structure of claim 1, wherein: the copper plate (3) is fixed on a screw through a nut (4), and the screw is fixed on an iron core (2) of the rotor.

4. The rotor balancing structure of claim 1, wherein: and the soldering tin (5) is heated and fixed on the copper plate (3) through an electric soldering iron.