CN214255922U - Permanent magnet motor rotor structure - Google Patents

Abstract

The utility model discloses a permanent magnet motor rotor structure, which comprises a rotor bracket, permanent magnets evenly distributed on the outer circumferential surface of the rotor bracket, dove tail wedge blocks, radial bolts, square cushion blocks, concave cushion blocks and axial bolts; a dovetail wedge block is arranged between any two permanent magnets, chamfering is carried out on two sides of any permanent magnet, radial limiting is carried out through the dovetail wedge blocks on the two sides of the permanent magnet, and the dovetail wedge blocks are fixed on the surface of the rotor support through radial bolts; the rotor support is provided with a spigot corresponding to each permanent magnet, the permanent magnets are abutted against the spigot, and the other side of the permanent magnets is axially limited through a square cushion block and a concave cushion block and is fixed through an axial bolt. The utility model discloses can show security and the efficiency that promotes the permanent-magnet machine installation.

Description

Permanent magnet motor rotor structure

Technical Field

The utility model relates to a permanent-magnet machine rotor structure for motor installation field.

Background

When the high-power low-speed permanent magnet motor is designed, the common design has the structural characteristics of larger outer diameter of a stator and a rotor, shorter length of an iron core and larger volume and mass of the motor. This kind of permanent-magnet machine rotor has strong magnetism, and during the equipment of stator and rotor, the rotor easily adsorbs to the stator, causes the production accident, also can influence the packaging efficiency simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a permanent-magnet machine rotor structure, can show security and the efficiency that promotes the permanent-magnet machine installation.

One technical scheme for achieving the above purpose is as follows: a permanent magnet motor rotor structure comprises a rotor support, permanent magnets uniformly distributed on the outer circumferential surface of the rotor support, a dovetail wedge block, a radial bolt, a square cushion block, a concave cushion block and an axial bolt;

a dovetail wedge block is arranged between any two permanent magnets, chamfering is carried out on two sides of any permanent magnet, radial limiting is carried out through the dovetail wedge blocks on the two sides of the permanent magnet, and the dovetail wedge blocks are fixed on the surface of the rotor support through radial bolts;

the rotor support is provided with a spigot corresponding to each permanent magnet, the permanent magnets are abutted against the spigot, and the other side of the permanent magnets is axially limited through a square cushion block and a concave cushion block and is fixed through an axial bolt.

Furthermore, a rectangular mounting hole is formed in the bottom of the end face of the stator matched with the rotor support.

The utility model discloses a permanent-magnet machine rotor structure, permanent magnet can install after stator and rotor equipment to avoided taking the risk that magnetism rotor equipment brought, and very big promotion assembly efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a rotor structure of a permanent magnet motor according to the present invention;

fig. 2 is the structural schematic diagram of the rotor structure of the permanent magnet motor of the present invention mounted on the stator.

Detailed Description

In order to better understand the technical solution of the present invention, the following detailed description is made by specific embodiments:

referring to fig. 1 and 2, a rotor structure of a permanent magnet motor includes a rotor frame 3, permanent magnets 1 uniformly distributed on an outer circumferential surface of the rotor frame, a dovetail wedge 2, a radial bolt 4, a square cushion block 5, a concave cushion block 6, and an axial bolt 7.

A dove tail wedge block 2 is arranged between any two permanent magnets 1, chamfering is carried out on two sides of any permanent magnet 1, and radial limiting is carried out through the dove tail wedge blocks 2 on the two sides. Pigeon tail voussoir central authorities processing has the screw, lies in on rotor bracket 3 that two permanent magnets 1 set up the connecting hole between the position also seted up for fix dove tail voussoir 2 on rotor bracket 3 through radial bolt 4, thereby the dove tail structure through dove tail voussoir 2 is fixed the permanent magnet and is compressed tightly on rotor bracket 3, realizes radially fixed.

One end of the rotor bracket 3 in the axial direction is provided with a spigot corresponding to each permanent magnet 1, and the other end is provided with a screw hole. The permanent magnet 1 is abutted against the spigot, axially limited through a square cushion block 5 and a concave cushion block 6, and axially fixed through an axial bolt 7.

In order to be assembled in cooperation with the rotor structure, the matched stator 8 is provided with a rectangular mounting hole at the 6 o' clock direction position of the end surface.

The specific installation steps are as follows:

step 1, firstly, fastening a dovetail wedge block 2 on a rotor bracket 3 through a radial bolt 4. It should be noted that the radial bolts 4 are only used for pre-fixing, and in the non-tightened state, a gap is required between the dovetail wedge 2 and the rotor frame 3.

And 2, mounting the rotor bracket 3 which is only provided with the dovetail wedge block 2 and is not provided with the permanent magnet 1 into the stator 8. The rotor is nonmagnetic at the moment, and can be installed very simply and quickly.

And 3, naturally dropping the dovetail wedge block 2 at the lower end of the rotor structure under the action of gravity, and reserving an installation gap of the permanent magnet 1. At the moment, the permanent magnet 1 is pushed into the space between the dovetail wedge block 2 and the rotor bracket 3 through the mounting tool 9 with a screw rod and a handle by utilizing the rectangular mounting hole at the bottom of the stator 8. After the permanent magnet 1 of each pole is installed, the radial bolt 4 is screwed down to form radial fixation on the permanent magnet 1.

And 4, after all the permanent magnets 1 are arranged, removing the installation tool 9, installing the square cushion blocks 5 on the end faces of the permanent magnets 1, and then axially fastening by utilizing the concave cushion blocks 6 and the axial bolts 7.

And 5, after all the permanent magnets 1 are installed, sealing the rectangular installation holes at the bottom of the end face of the stator 8 by using the cover plate, and completing the whole installation operation.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims (2)

1. A permanent magnet motor rotor structure comprises a rotor support and permanent magnets uniformly distributed on the outer circumferential surface of the rotor support, and is characterized by further comprising a dovetail wedge block, a radial bolt, a square cushion block, a concave cushion block and an axial bolt;

a dovetail wedge block is arranged between any two permanent magnets, chamfering is carried out on two sides of any permanent magnet, radial limiting is carried out through the dovetail wedge blocks on the two sides of the permanent magnet, and the dovetail wedge blocks are fixed on the surface of the rotor support through radial bolts;

the rotor support is provided with a spigot corresponding to each permanent magnet, the permanent magnets are abutted against the spigot, and the other side of the permanent magnets is axially limited through a square cushion block and a concave cushion block and is fixed through an axial bolt.

2. The rotor structure of a permanent magnet motor according to claim 1, wherein a rectangular mounting hole is formed at the bottom of the end surface of the stator matched with the rotor bracket.

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