CN209786967U

CN209786967U - Protection device of permanent magnet synchronous motor

Info

Publication number: CN209786967U
Application number: CN201920787544.5U
Authority: CN
Inventors: 董敬元; 吴数; 年维林
Original assignee: Tianjin Lin Yuan Machinery Equipment Co Ltd
Current assignee: Tianjin Lin Yuan Machinery Equipment Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2019-12-13
Anticipated expiration: 2029-05-29

Abstract

The utility model provides a PMSM's protection device, includes no flabellum ventilation circle, driving motor seat, reduction gear, synchronous machine, no flabellum ventilation circle upper portion has the water conservancy diversion circle, and water conservancy diversion circle lower part has the connecting seat, and the connecting seat bottom has the fixed disk, and the inside evenly distributed screw hole of fixed disk has a turbine chamber, the driving motor seat has the shell, and the outside symmetric distribution fixed plate of shell, the inside symmetric distribution No. two screw holes of fixed plate, No. one thread groove of shell top evenly distributed, No. one thread groove inboard have the motor, and the turbine intracavity is put into to the motor, and a bolt inserts a screw hole and a thread inslot spiro union, and no flabellum ventilation circle is connected with the driving motor seat, and synchronous machine puts into the water conservancy diversion circle hole, and synchronous machine passes through No. three bolted connection with.

Description

Protection device of permanent magnet synchronous motor

Technical Field

The utility model relates to a PMSM field especially relates to a PMSM's protection device.

Background

in the use process of the permanent magnet synchronous motor, because a stator core is afraid of high-temperature demagnetization, the heat dissipation of the stator core needs to be paid attention, the traditional motor usually adopts a fan with a rear guide cover matched with a rotor overhang shaft to conduct flow guide heat dissipation, the deflection of the rotor shaft is easy to increase, the stress of the motor is uneven, the heat dissipation effect depends on the shape of the guide cover, the effect can be greatly reduced once the motor is damaged, and the structure is not reasonable enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the above-mentioned not enough to prior art exists provides a permanent magnet synchronous motor's protection device rational in infrastructure.

The utility model aims at realizing through the following technical scheme:

the lower part of the speed reducer is uniformly provided with a speed reducer shell, a second bolt is inserted into a second threaded hole and is in threaded connection with the speed reducer shell, the speed reducer is connected with a driving motor base, and the middle part of the shell is uniformly provided with air inlet holes.

Has the advantages that:

the motor rotates the back and forms the negative pressure from the income tuber opening, the air flows through the water conservancy diversion circle hole from the external world, the flow direction is as shown by the arrow point, the increase of air momentum is about fifteen times, can carry out the forced air cooling heat dissipation to synchronous machine shell, and its and synchronous machine split type design, can reduce synchronous machine's length, and can reduce the moment of flexure that synchronous machine received and make the amount of deflection reduce, rational in infrastructure, and water conservancy diversion circle hole air flow direction is concentrated, save space, avoid the energy waste that the factory building adopted big flabellum fan to cause, rational in infrastructure.

Drawings

Fig. 1 is a schematic side view of a protection device for a permanent magnet synchronous motor according to the present invention.

Fig. 2 is a schematic view of the structure of a protection device of a pmsm without a fan blade ventilation ring viewed from above.

Fig. 3 is a schematic view of a driving motor base of a protection device for a pmsm according to the present invention.

Fig. 4 is a schematic side view of a driving motor base of a protection device of a permanent magnet synchronous motor.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

A protection device of a permanent magnet synchronous motor comprises a flabellum-free ventilation ring 01, a driving motor base 02, a speed reducer 03 and a synchronous motor 04, wherein a flow guide ring 11 is arranged on the upper portion of the flabellum-free ventilation ring 01, a connecting base 12 is arranged on the lower portion of the flow guide ring 11, a fixing disc 13 is arranged at the bottom of the connecting base 12, a first threaded hole 14 is uniformly distributed in the fixing disc 13, a turbine cavity 15 is arranged in the connecting base 12, the driving motor base 02 comprises a shell 21, a fixing plate 24 is symmetrically distributed outside the shell 21, a second threaded hole 25 is symmetrically distributed inside the fixing plate 24, a first threaded groove 22 is uniformly distributed at the top of the shell 21, a motor 23 is arranged on the inner side of the first threaded groove 22, the motor 23 is arranged in the turbine cavity 15, a bolt is inserted into the first threaded hole 14 and the first threaded groove 22 to be screwed, the flabellum-free, the synchronous motor 04 is connected with the speed reducer 03 through a third bolt.

The lower part of the speed reducer 03 is uniformly provided with a speed reducer shell 31, a second bolt is inserted into a second threaded hole 25 and is in threaded connection with the speed reducer shell 31, the speed reducer 03 is connected with the driving motor base 02, and the middle part of the shell 21 is uniformly provided with air inlet holes 26.

Claims

1. The protection device of the permanent magnet synchronous motor is characterized by comprising a flabellum-free ventilation ring, a driving motor base, a speed reducer and a synchronous motor, wherein the upper portion of the flabellum-free ventilation ring is provided with a flow guide ring, the lower portion of the flow guide ring is provided with a connecting seat, the bottom of the connecting seat is provided with a fixed disk, a first threaded hole is uniformly distributed in the fixed disk, a turbine cavity is arranged in the connecting seat, the driving motor base is provided with a shell, a fixed plate is symmetrically distributed outside the shell, a second threaded hole is symmetrically distributed in the fixed plate, a first threaded groove is uniformly distributed in the top of the shell, a motor is arranged on the inner side of the first threaded groove, the motor is arranged in the turbine cavity, a first bolt is inserted into the first threaded hole and is in threaded connection with the first threaded groove, the flabellum.

2. The protector for the PMSM according to claim 1, wherein a reducer casing is evenly distributed at the lower part of the reducer, a second bolt is inserted into a second threaded hole to be screwed with the inside of the reducer casing, the reducer is connected with the drive motor base, and air inlet holes are evenly distributed at the middle part of the casing.