Mining flame-proof semi-direct-drive deceleration permanent magnet synchronous motor

Abstract

The utility model discloses a mining explosion-proof type semi-direct-drive deceleration permanent magnet synchronous motor, comprising a connecting seat, one end of the connecting seat is connected with a deceleration device through a permanent magnet motor seat, the other end of the connecting seat is provided with a rear end cover assembly, and the middle part of the inner cavity of the connecting seat is rotatably connected with a rotor core shaft through a bearing. The rotor core shaft is connected with the speed reduction device through an external spline transmission shaft, a rotor assembly is arranged on the outer side of the rotor core shaft, a stator assembly is arranged on the outer side of the rotor assembly, and a machine shell is arranged on the outer side of the connecting base. Compared with a four-stage asynchronous motor, the permanent magnet synchronous motor provided by the utility model has the advantages that the rotating speed is reduced, a high-speed output shaft is omitted, the abrasion is reduced, the matched speed reducer adopts two-stage speed reduction, the fault points are reduced compared with three-stage speed reduction, the permanent magnet synchronous motor and the speed reducer are integrated, the overall size, volume and mass are reduced, and the permanent magnet synchronous motor is an efficient energy-saving speed reduction motor; the device is especially suitable for a coal mine explosion-proof environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mine synchronous motor, especially relates to a mine explosion-proof half direct drive speed reduction permanent magnet synchronous motor. BACKGROUND

[0002] The mine permanent magnet synchronous motor is a kind of motor specially designed for mine operation, and its core feature is high efficiency, reliable and adapt to harsh environment. The mine permanent magnet synchronous motor is usually composed of stator, rotor and end cover and the like, the stator generates rotating magnetic field, and the rotor is made of permanent magnet material. This structure makes the motor keep high efficiency in the operation process, and has good dynamic response performance and low noise characteristics.

[0003] At present, the existing mine permanent magnet synchronous motor is mostly 4-stage asynchronous motor, and its rotating speed is high, wear is big, and it is three-stage speed reduction, so as to cause many fault points, in addition, the existing permanent magnet synchronous motor and speed reduction device are split type, which leads to large overall volume and poor applicability. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of mine explosion-proof half direct drive speed reduction permanent magnet synchronous motor to solve the technical problem proposed in background art.

[0005] To realize the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a kind of mine explosion-proof half direct drive speed reduction permanent magnet synchronous motor, including connecting seat, the connecting seat one end is connected with speed reduction device by permanent magnet motor base, the other end is provided with rear end cover assembly, and the middle part in the inner cavity of connecting seat is rotatably connected with rotor core shaft by bearing, the rotor core shaft is connected with speed reduction device by outer spline transmission shaft, and the outer side of the rotor core shaft is provided with rotor assembly, the outer side of the rotor assembly is provided with stator assembly, the outer side of the connecting seat is provided with machine shell, the machine shell is provided with terminal block assembly, the side of the machine shell is provided with terminal box door plate and baffle respectively.

[0006] Preferably, the connecting seat and permanent magnet motor base are fixedly connected by straight slot heavy elastic cylindrical pin.

[0007] Preferably, the rear end cover assembly and connecting seat, terminal box door plate and machine shell, and baffle and machine shell are fixedly connected by internal hexagonal cylindrical head screw.

[0008] Preferably, the internal hexagonal cylindrical head screw is provided with spring washer.

[0009] Preferably, the stator assembly is provided with magnetic steel.

[0010] Preferably, the connecting seat and outer spline transmission shaft are provided with skeleton oil seal at the connecting place.

[0011] Preferably, the connecting seat is provided with rubber solid round bars at the connection with the casing.

[0012] The mining explosion-proof half-direct-drive speed reduction permanent magnet synchronous motor has the following advantages:

[0013] Compared with the 4-stage asynchronous motor, the speed is reduced, the high-speed output shaft is removed, the abrasion is reduced, the matching speed reduction device is 2-stage speed reduction, the failure points are reduced compared with the 3-stage speed reduction, the permanent magnet synchronous motor and the speed reduction device are integrated, the overall size, volume and mass are reduced, and it is a high-efficiency energy-saving speed reduction motor, and is particularly suitable for use in coal mine explosion-proof environment. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a whole structure schematic view of the present application.

[0016] Marked in the figure: 1, speed reduction device; 2, straight groove heavy elastic cylindrical pin; 3, connecting seat; 4, stator assembly; 5, outer spline transmission shaft; 6, rear end cover assembly; 7, rotor shaft; 8, bearing; 9, rotor assembly; 10, magnetic steel; 11, terminal assembly; 12, inner hexagonal cylindrical head screw; 13, spring washer; 14, terminal box door plate; 15, baffle; 16, rubber solid round bar; 17, permanent magnet motor seat; 18, skeleton oil seal. DETAILED DESCRIPTION

[0017] In the following, only some exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0018] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0019] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0020] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0021] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can refer to the same reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed.

[0022] In order to better understand the purpose, structure and function of the present application, the mining explosion-proof semi-direct drive speed reduction permanent magnet synchronous motor of the present application is further described in detail below in conjunction with the drawings.

[0023] As Figure 1As shown, the utility model discloses a mine explosion -proof half direct -drive speed reduction permanent magnet synchronous motor, including connecting seat 3, and one end of connecting seat 3 is connected with speed reduction device 1 through permanent magnet motor seat 17, and the other end is provided with rear end cover assembly 6, and connecting seat 3 and permanent magnet motor seat 17 are fixedly connected through straight slot heavy elastic cylindrical pin 2 between, and the middle part of connecting seat 3 inner chamber is rotatably connected with rotor core shaft 7 through bearing 8, and rotor core shaft 7 is connected with speed reduction device 1 through outer spline transmission shaft 5, and the connecting place of connecting seat 3 and outer spline transmission shaft 5 is provided with skeleton oil seal 18, and the outside of rotor core shaft 7 is provided with rotor assembly 9, and the outside of rotor assembly 9 is provided with stator assembly 4, and the inside of stator assembly 4 is provided with magnetic steel 10, and the outside of connecting seat 3 is provided with casing, and the connecting place of connecting seat 3 and casing is provided with rubber solid round bar 16, and the inside of casing is provided with terminal block assembly 11, and one side of casing is provided with terminal box door plate 14 and baffle 15 respectively.The rear end cover assembly 6 and connecting seat 3 between, terminal box door plate 14 and casing between, and baffle 15 and casing between are all fixedly connected through internal hexagonal cylindrical head screw 12, and spring washer 13 is sleeved on internal hexagonal cylindrical head screw 12, can effectively prevent the phenomenon of internal hexagonal cylindrical head screw 12 loosening, guarantees the stability of structure.

[0024] The working principle of the mine explosion -proof half direct -drive speed reduction permanent magnet synchronous motor is as follows: the mine explosion -proof half direct -drive speed reduction permanent magnet synchronous motor is developed and produced by absorbing advanced technologies at home and abroad, analyzing and researching mathematical models, combining with the specific conditions of coal mines in China and according to the working characteristics of the equipment. It is an ideal power selection for coal mine machinery. The permanent magnet synchronous motor of the company is an 8-level motor, and the speed is reduced compared with a 4-level asynchronous motor. The high-speed output shaft is removed, wear is reduced, the supporting speed reduction device is a 2-level speed reduction, and the number of fault points is reduced compared with a 3-level speed reduction. The permanent magnet synchronous motor and the speed reduction device are integrated, and the overall size, volume and mass are smaller. It is a high-efficiency energy-saving speed reduction motor, especially suitable for use in coal mine explosion -proof environments.

[0025] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A mine-used explosion-proof semi-direct-drive reduction permanent magnet synchronous motor, characterized in that: The utility model relates to a permanent magnet motor, including connecting seat (3), one end of connecting seat (3) is connected with speed reducer (1) through permanent magnet motor seat (17), the other end is provided with rear end cover assembly (6), and the middle part of the inner chamber of connecting seat (3) is rotatably connected with rotor core shaft (7) through bearing (8), rotor core shaft (7) is connected with speed reducer (1) through outer spline transmission shaft (5), and the outside of rotor core shaft (7) is provided with rotor assembly (9), the outside of rotor assembly (9) is provided with stator assembly (4), the outside of connecting seat (3) is provided with casing, the inside of casing is provided with wiring terminal assembly (11), one side of casing is provided with terminal box door plate (14) and baffle (15) respectively.

2. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 1, characterized in that: The connecting seat (3) and the permanent magnet motor seat (17) are fixedly connected through the straight slot heavy elastic cylindrical pin (2).

3. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 1, characterized in that: The rear end cover assembly (6) and the connecting seat (3), the terminal box door plate (14) and the casing, and the baffle (15) and the casing are fixedly connected through the inner hexagonal cylindrical head screw (12).

4. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 3, characterized in that: The inner hexagonal cylindrical head screw (12) is sleeved with the spring washer (13).

5. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 1, characterized in that: The stator assembly (4) is provided with the magnetic steel (10).

6. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 1, characterized in that: The connecting seat (3) and the outer spline transmission shaft (5) are provided with the skeleton oil seal (18) at the connecting position.

7. The explosion-proof semi-direct-drive reduction permanent magnet synchronous motor for mine according to claim 1, characterized in that: The connecting seat (3) and the casing are provided with the rubber solid circular bar (16) at the connecting position.

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