CN216056757U

CN216056757U - Torque-limiting magnetic coupler for mine

Info

Publication number: CN216056757U
Application number: CN202122108719.5U
Authority: CN
Inventors: 贾双喜
Original assignee: Shanxi Zhongke Intelligent Equipment Technology Co ltd
Current assignee: Shanxi Zhongke Intelligent Equipment Technology Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-03-15
Anticipated expiration: 2031-09-02

Abstract

The utility model belongs to the technical field of torque-limiting magnetic couplers, in particular to a mining torque-limiting magnetic coupler which comprises a spline sleeve shaft, wherein a mandrel is sleeved in a bearing clamped on the inner wall of the spline sleeve shaft, a permanent magnet rotor is connected to the outer surface of the spline sleeve shaft in a sliding manner, torque is generated by cutting magnetic lines of force by driving the rotor and the permanent magnet rotor, when load is locked, the permanent magnet rotor is instantly pushed away by the driving rotor without transmitting the torque, equipment is protected, and the power can be increased by adjusting the gap between the driving rotor and the mandrel, reducing the gap and increasing the power; the clearance increase can make power reduce for people can adjust the output of this device according to the actual conditions of mine below, and the soft start of this device is effectual simultaneously, is single-disk structure, does not have the dish of wiping danger, can not have the spark to produce, and optimizes and has improved equipment structure, has prolonged the life of equipment.

Description

Torque-limiting magnetic coupler for mine

Technical Field

The utility model belongs to the technical field of torque-limiting magnetic couplers, and particularly relates to a torque-limiting magnetic coupler for a mine.

Background

The magnetic coupling speed regulation drive realizes the torque transmission from the motor to the load through an air gap between the magnetizer and the permanent magnet. This technique achieves no mechanical coupling of the motor and the load side. The working principle is that the rare permanent magnet at one end and the induction magnetic field at the other end interact to generate torque, and the transmitted torque can be controlled by adjusting the air gap between the permanent magnet and the magnetizer, so that the load speed is adjusted.

The coupler used under the mine in the prior art is an aqueous medium hydraulic coupler, but the aqueous medium hydraulic coupler has the following defects:

1. the water medium is easy to vaporize after the temperature of the water medium rises, the pressure in the cavity of the coupler is easy to increase due to excessive water vapor accumulation, and if the water vapor is not released, explosion can be caused, so the water medium hydraulic coupler is also provided with an explosive plug besides a fusible plug safety protection device.

2. In order to prevent the hydraulic coupler from exploding when the internal steam pressure is high, the shell of the coupler is made thicker and is required to bear 3.4MPa pressure without bursting, so that more materials are required for the shell, and the casting difficulty of the shell is improved.

3. The water medium fluid coupling adopts a structure that a sealing device is arranged outside an inner bearing, and because water vapor is difficult to seal, the bearing is often corroded, the bearing is corroded and clamped, and the service life of the bearing is shortened.

4. The aqueous medium coupler has higher failure rate and shorter service life, and is specified in the standard reliability index of MT208 hydraulic coupler for scraper conveyer: the mean time between failures of the fluid coupling in downhole operation should not be less than 2000h, but in practice this criterion is difficult to achieve.

Based on the conditions that the existing underground use equipment is complex in structure, short in service life and the like, the mining torque-limiting magnetic coupler is provided for improving and innovating the prior art.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a torque-limiting magnetic coupler for mines.

In order to achieve the purpose, the utility model provides the following technical scheme: the mining torque-limiting magnetic coupler comprises a spline sleeve shaft, a mandrel is sleeved in a bearing clamped on the inner wall of the spline sleeve shaft, and a permanent magnet rotor is connected to the outer surface of the spline sleeve shaft in a sliding mode.

Preferably, the permanent magnet rotor is magnetically connected with the drive rotor.

Preferably, the spindle is in threaded connection with the drive rotor via a bolt.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, torque is generated by cutting magnetic lines of force by the driving rotor and the permanent magnet rotor, when a load is locked, the permanent magnet rotor is instantly pushed away by the driving rotor without transmitting the torque to protect equipment, and the gap between the driving rotor and the mandrel is adjusted to be reduced, so that the power can be increased; the clearance increase can make power reduce for people can adjust the output of this device according to the actual conditions of mine below, and the soft start of this device is effectual simultaneously, is single-disk structure, does not have the dish of wiping danger, can not have the spark to produce, and optimizes and has improved equipment structure, has prolonged the life of equipment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic cross-sectional view of the front view of the present invention;

in the figure: 1. a permanent magnet rotor; 2. a drive rotor; 3. a mandrel; 4. and a spline sleeve shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1, the present invention provides the following technical solutions: mining limit for moment type magnetic coupling, including

spline sleeve shaft

4, 4 bearing of inner wall joint of spline sleeve shaft have cup jointed dabber 3 in, the surface sliding connection of spline sleeve shaft 4 has permanent magnet rotor 1.

Specifically, the permanent magnet rotor 1 is magnetically connected with the driving rotor 2;

the driving rotor 2 and the permanent magnet rotor 1 cut magnetic lines of force to generate torque, and when the load is locked, the permanent magnet rotor 1 is instantly pushed away by the driving rotor 2 without transmitting the torque so as to protect equipment.

Specifically, the mandrel 3 is in threaded connection with the driving rotor 2 through a bolt;

the driving rotor 2 is in threaded connection with the mandrel 3, the gap between the driving rotor 2 and the mandrel 3 can be adjusted, the gap between the driving rotor 2 and the mandrel 3 is reduced, the power can be increased, and the gap between the driving rotor 2 and the mandrel 3 is increased, so that the power can be reduced.

The working principle and the using process of the utility model are as follows:

the utility model, when in use:

the driving rotor 2 and the permanent magnet rotor 1 cut magnetic lines of force to generate torque, when load is locked, the permanent magnet rotor 1 is instantly pushed away by the driving rotor 2 without transmitting torque, equipment is protected, the driving rotor 2 is in threaded connection with the mandrel 3, the gap between the driving rotor 2 and the mandrel 3 can be adjusted, the gap between the driving rotor 2 and the mandrel 3 is reduced, power can be increased, and the gap between the driving rotor 2 and the mandrel 3 is increased, so that the power can be reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Mining limit for moment type magnetic coupling, including spline sleeve axle (4), its characterized in that: the bearing of spline cover axle (4) inner wall joint has cup jointed dabber (3) in, the surface sliding connection of spline cover axle (4) has permanent magnet rotor (1).

2. The mining torque-limiting magnetic coupling of claim 1, wherein: the permanent magnet rotor (1) is magnetically connected with the driving rotor (2).

3. The mining torque-limiting magnetic coupling of claim 1, wherein: the mandrel (3) is in threaded connection with the driving rotor (2) through a bolt.