CN212649293U

CN212649293U - Mining speed reduction permanent magnet motor

Info

Publication number: CN212649293U
Application number: CN202021864757.2U
Authority: CN
Inventors: 王晓璐; 谢程达; 师理智
Original assignee: Shanxi Weida Transmission Technology Co Ltd
Current assignee: Shanxi Weida Transmission Technology Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-02
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a mining speed reduction permanent magnet motor, belonging to the technical field of mining machinery; the problem that a driving device of a belt conveyor under a mine is large in structure and not easy to mount and transport is solved; the permanent magnet synchronous motor comprises a permanent magnet synchronous motor and a planetary reducer; the permanent magnet synchronous motor comprises a shell, wherein the shell is connected with a front end cover; the planetary reducer comprises a box body, a reducer output shaft and a sun gear connected to the reducer output shaft, the box body of the planetary reducer is connected with a front end cover of the permanent magnet synchronous motor, an input shaft of the permanent magnet synchronous motor is connected with the sun gear of the planetary reducer, and the reducer output shaft is used as a power output shaft; the device has smaller volume and lighter weight, is more suitable for being used in special environments under mines, has high adaptability, meets different working condition requirements, and can achieve the aim of recycling.

Description

Mining speed reduction permanent magnet motor

Technical Field

The utility model relates to a mining belt conveyor drive arrangement specifically is a mining speed reduction permanent magnet motor.

Background

In the prior art, the driving device of the mining belt conveyor has two driving modes of an asynchronous motor driving system and a permanent magnet direct drive motor.

The asynchronous motor driving system consists of a high-speed asynchronous motor, a hydraulic coupler and a multi-stage speed reducer, and the whole transmission system is large in size, low in efficiency, high in energy consumption, difficult to install, high in later-stage use and maintenance cost and low in reliability.

In recent years, with the continuous development of modern control technology, the application of the permanent magnet direct drive motor in coal mines is mature day by day. Compared with an asynchronous motor driving system, the permanent magnet direct drive motor omits an intermediate link, the motor directly drives a load, soft start can be realized, the transmission efficiency is high, the installation is convenient, maintenance can be basically avoided, when the motor power is more than 500kw, the working rotating speed of the motor is less than 60r/min, the output torque of the motor is from tens of thousands of Nm to hundreds of thousands of Nm, the performance requirement can be met only when the center height of the direct drive motor is more than 1m, the motor volume is too large, the production cost is very high, the transportation and underground installation are not facilitated, the user acceptance is low, and the further development of the permanent magnet direct drive motor is restricted.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a mining speed reduction permanent-magnet motor. The problem of the belt conveyor drive arrangement under the mine big structure, difficult installation transportation is solved.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A mining deceleration permanent magnet motor comprises a permanent magnet synchronous motor and a planetary reducer; the permanent magnet synchronous motor comprises a shell, wherein the shell is connected with a front end cover; the planetary reducer comprises a box body, a reducer output shaft and a sun gear connected to the reducer output shaft, the box body of the planetary reducer is connected with a front end cover of the permanent magnet synchronous motor, an input shaft of the permanent magnet synchronous motor is connected with the sun gear of the planetary reducer, and the reducer output shaft serves as a power output shaft.

Furthermore, a box body of the planetary reducer is connected with a front end cover flange of the permanent magnet synchronous motor through a spigot.

Further, an input shaft of the permanent magnet synchronous motor is connected with a sun gear of the planetary reducer through a spline.

Furthermore, the permanent magnet synchronous motor is a three-phase permanent magnet synchronous motor, and the planetary reducer is a primary planetary reducer.

The utility model discloses produced beneficial effect does for prior art.

1. The utility model discloses compare with asynchronous machine actuating system, overcome former system's transmission chain length, area is big, and transmission efficiency is low and the maintenance volume defect such as big.

2. The utility model discloses directly drive the motor with the permanent magnetism and compare, the volume is littleer, and weight is lighter, greatly reduced manufacturing cost, permanent magnetism direct drive motor cost's 1/2, 1/3 even can be accomplished to speed reduction permanent magnet motor's cost, greatly reduced customer's purchasing cost. The performance of the motor is optimized by increasing the working speed of the motor to 300-500r/min, and simultaneously, the reliability of the speed reducer is improved by reducing the input speed of the speed reducer, and the service life of the product is prolonged.

3. The utility model discloses it is nimble convenient to use, and the reduction gear of different velocity ratios is changeed and is connect to same permanent-magnet machine accessible reaches different output rotational speed to in the different operating mode requirements of adaptation, can reach reuse's purpose.

Drawings

Fig. 1 is a schematic structural diagram of the mining speed-reducing permanent magnet motor of the present invention.

The three-phase permanent magnet synchronous motor comprises a three-phase permanent magnet synchronous motor 1, a primary planetary speed reducer 2, an explosion-proof junction box 3, a machine shell 4, a winding stator 5, a rotor assembly 6, a motor rotating shaft 7, a front end cover 8, a sun wheel 9, an inner gear ring 10, a planet carrier 11, a planet wheel 12, a box body 13 and an output shaft 14.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1, the mining deceleration permanent magnet motor device is composed of a three-phase permanent magnet synchronous motor 1 and a primary planetary reducer 2. The three-phase permanent magnet synchronous motor comprises an explosion-proof junction box 3, a machine shell 4, a winding stator 5, a rotor assembly 6, a motor rotating shaft 7 and a front end cover 8. The primary planetary reducer 2 mainly comprises a sun gear 9, an inner gear ring 10, a planet carrier 11, a planet gear 12, a box body 13 and an output shaft 14. The three-phase permanent magnet synchronous motor 1 and the first-stage planetary reducer 2 are integrally assembled, a box body 13 of the first-stage planetary reducer 2 is in flange connection with a front end cover 8 of the three-phase permanent magnet synchronous motor 1 through a spigot, a motor rotating shaft 7 of the three-phase permanent magnet synchronous motor 1 is in meshed connection with a sun gear 9 of the first-stage planetary reducer 2 through a spline, an output shaft 14 of the first-stage planetary reducer 2 serves as a power output shaft, the sun gear 9 is located at the center of the reducer, and the number of the planetary gears 12 is 3.

The utility model discloses the theory of operation of device is, for permanent-magnet machine winding stator 5 circular telegram, winding stator 5 produces the magnetic field, the magnetic field interact that magnetic field and magnet steel that winding stator 5 produced produces electromagnetic torque, finally export invariable torque through motor shaft 7, motor shaft 7 is through meshing the transmission of output power for one-level planetary reducer 2 with reduction gear sun gear 9, sun gear 9 is rotatory, it is rotatory to drive planet wheel 12, because ring gear 10 is fixed, planet wheel 12 is when passing by oneself, thereby planet wheel 12 also drives planet wheel 12 round sun gear 9 revolution with ring gear 10 meshing rotation, planet wheel 12 and planet carrier 11 fixed connection, planet carrier 11 is rotatory to drive 14 rotatory output power of reduction gear output shaft for load equipment.

Compared with an asynchronous motor driving system, the device overcomes the defects of long transmission chain, large floor area, low transmission efficiency, large maintenance amount and the like of the original system. Compared with a permanent magnet direct drive motor, the permanent magnet direct drive motor has the advantages of being smaller in size, lighter in weight and greatly reduced in manufacturing cost, the cost of the speed reduction permanent magnet motor can be 1/2 or even 1/3 of the cost of the permanent magnet direct drive motor, and purchasing cost of customers is greatly reduced. The performance of the motor is optimized by increasing the working speed of the motor to 300-500r/min, and simultaneously, the reliability of the speed reducer is improved by reducing the input speed of the speed reducer, and the service life of the product is prolonged.

The device is flexible and convenient to use, and the same permanent magnet motor can achieve different output rotating speeds by switching reducers with different speed ratios, so that the device can adapt to different working condition requirements and can achieve the aim of recycling.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. A mining deceleration permanent magnet motor is characterized by comprising a permanent magnet synchronous motor and a planetary reducer; the permanent magnet synchronous motor comprises a shell (4), wherein the shell (4) is connected with a front end cover (8); the planetary reducer comprises a box body (13), a reducer output shaft and a sun gear (9) connected to the reducer output shaft, the box body (13) of the planetary reducer is connected with a front end cover (8) of the permanent magnet synchronous motor, an input shaft of the permanent magnet synchronous motor is connected with the sun gear (9) of the planetary reducer, and the reducer output shaft serves as a power output shaft.

2. The mining deceleration permanent magnet motor according to claim 1, characterized in that a box body (13) of the planetary reducer is in flange connection with a front end cover (8) of the permanent magnet synchronous motor through a spigot.

3. A mining deceleration permanent magnet motor according to claim 1, characterized in that the input shaft of the permanent magnet synchronous motor is connected with the sun gear (9) of the planetary reducer by splines.

4. The mining deceleration permanent magnet motor according to claim 1, wherein the permanent magnet synchronous motor is a three-phase permanent magnet synchronous motor, and the planetary reducer is a one-stage planetary reducer.