Magnetic coupler

Abstract

The utility model belongs to the technical field of magnetic couplers, and particularly relates to a magnetic coupler which comprises a first shaft and a second shaft, a first sleeve body is fixedly installed on the first shaft through a bolt, a second sleeve body is fixedly installed on the second shaft through a bolt, permanent magnets are installed in the first sleeve body and the second sleeve body respectively, and the first sleeve body and the second sleeve body are connected through a bolt. A protection assembly is arranged outside the first sleeve body and comprises a first protection shell, and the first protection shell is detachably connected with a second protection shell. Grooves are formed in the outer wall of the first protective shell and the outer wall of the second protective shell, a screw rod is hinged to the interior of the groove of the first protective shell, and the screw rod is in threaded connection with a nut. According to the magnetic coupler, the first protective shell and the second protective shell can be quickly disassembled and assembled through the use of the protective assembly and the combined structure of the screw rod, the nut and the limiting ring. And the two protective shells can be tightly abutted by rotating the nut, so that the sleeve body I and the sleeve body II are fully wrapped and protected, and dust and impurities are prevented from entering a magnetic coupling area.

Description

Technical Field

[0001] This utility model relates to the field of magnetic coupler technology, specifically a magnetic coupler. Background Technology

[0002] A magnetic coupler, also known as a magnetic coupling or permanent magnet drive, mainly consists of three parts: a copper rotor, a permanent magnet rotor, and a controller. Generally, the copper rotor is connected to the motor shaft, and the permanent magnet rotor is connected to the shaft of the working machine. There is an air gap between the copper rotor and the permanent magnet rotor, called the air gap. There is no mechanical connection to transmit torque, so a soft magnetic connection is formed between the motor and the working machine. The torque and speed of the working machine shaft can be changed by adjusting the air gap.

[0003] Currently, in existing technologies, the use of magnetic couplers is mainly for start-up protection, preventing overload of the driving components and protecting them. However, due to the certain gap between the driving end and the driven end of the magnetic coupler, dust in the air can easily enter between the driving end and the driven end during operation, affecting the operation of the magnetic coupler. In view of this, a new type of magnetic coupler is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a magnetic coupler that can solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention proposes a magnetic coupler comprising a shaft one and a shaft two. A sleeve one is fixedly mounted on the shaft one by bolts, and a sleeve two is fixedly mounted on the shaft two by bolts. Permanent magnets are installed inside both sleeve one and sleeve two. A protective assembly is provided on the outside of sleeve one, the protective assembly comprising:

[0006] A protective shell one, wherein a protective shell two is detachably connected to the protective shell one;

[0007] The outer walls of both the first and second protective shells are provided with grooves. A screw is hinged in the groove of the first protective shell, and a nut is threaded onto the screw.

[0008] The limiting ring is detachably connected to the end of the screw away from the protective shell by bolts. The limiting ring can limit the nut and prevent it from falling off.

[0009] Preferably, the diameter of the nut is larger than the diameter of the screw, and the diameter of the limiting ring is larger than the diameter of the screw.

[0010] Preferably, by rotating the nut, the second protective shell can abut against the first protective shell. In this way, the first and second protective shells can be quickly abutted, so that the first and second protective shells can protect the first and second sleeves and prevent dust from entering between the first and second sleeves.

[0011] Preferably, the first protective shell and the second protective shell are sleeved on the outside of the first sleeve and the second sleeve, and the inner surfaces of the first protective shell and the second protective shell are in contact with the outer walls of the first sleeve and the second sleeve to prevent dust from entering the magnetic coupling area.

[0012] Preferably, the first sleeve and the second sleeve are separated by a certain distance.

[0013] Preferably, a guide bar one is fixedly connected to the outer wall of the first shaft, and a guide bar two is fixedly connected to the outer wall of the second shaft.

[0014] Preferably, the inner surface of the first sleeve is provided with a positioning opening 1, the inner surface of the second sleeve is provided with a positioning opening 2, the first guide strip matches the first positioning opening 1, and the second guide strip matches the second positioning opening 2.

[0015] This invention provides a magnetic coupler. It has the following advantages:

[0016] (1) Through the use of protective components, the combination structure of the screw, nut and limiting ring of this magnetic coupler can quickly realize the assembly and disassembly of protective shell one and protective shell two. Rotating the nut can make the two protective shells fit tightly together, forming a full-coverage protection for shell one and shell two, preventing dust and impurities from entering the magnetic coupling area and affecting the magnetic coupling efficiency of the permanent magnet.

[0017] (2) The magnetic coupler can effectively prevent the nut from falling off the screw when the protective shell 1 and the protective shell 2 are disassembled by limiting the nut through the limiting ring, which facilitates the use of the protective components. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the protective component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the separate structure of sleeve one and sleeve two of this utility model.

[0023] Explanation of icon numbers:

[0024] 1. Shaft 1; 2. Shaft 2; 3. Sleeve 1; 4. Sleeve 2; 5. Protective assembly; 101. Guide bar 1; 21. Guide bar 2; 31. Positioning port 1; 41. Positioning port 2; 51. Protective shell 1; 52. Protective shell 2; 53. Groove; 54. Screw; 55. Nut; 56. Limiting ring; 6. Permanent magnet.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 This utility model proposes a magnetic coupler, including a shaft 1 and a shaft 2. A sleeve 3 is fixedly installed on the shaft 1 by bolts, and a sleeve 4 is fixedly installed on the shaft 2 by bolts. A permanent magnet 6 is installed inside both the sleeve 3 and the sleeve 4. The sleeve 3 and the sleeve 4 are separated by a certain distance. A protective component 5 is provided on the outside of the sleeve 3.

[0028] In the embodiments of this utility model, in order to facilitate the installation of sleeve 3 and sleeve 4, specifically, a guide strip 101 is fixedly connected to the outer wall of shaft 1, a guide strip 21 is fixedly connected to the outer wall of shaft 2, a positioning port 31 is opened on the inner surface of sleeve 3, and a positioning port 41 is opened on the inner surface of sleeve 4. The guide strip 101 matches the positioning port 31, and the guide strip 21 matches the positioning port 41. Through the use of the guide strip 101, the guide strip 21, the positioning port 31, and the positioning port 41, sleeve 3 and sleeve 4 can be quickly positioned and installed, while ensuring the stability of subsequent operation of sleeve 3 and sleeve 4.

[0029] Furthermore, the protective component 5 includes a protective shell 51, a groove 53, and a limiting ring 56. A second protective shell 52 is detachably connected to the first protective shell 51. Grooves 53 are provided on the outer walls of both the first and second protective shells 51. A screw 54 is hinged to the groove 53 of the first protective shell 51. A nut 55 is threaded onto the screw 54. The limiting ring 56 is detachably connected to the end of the screw 54 away from the first protective shell 51 by bolts. The diameter of the nut 55 is larger than the diameter of the screw 54, and the diameter of the limiting ring 56 is larger than the diameter of the screw 54. By rotating the screw 54 down, the screw 54 is positioned... In the groove 53, the nut 55 is rotated again, and the second protective shell 52 can abut against the first protective shell 51. The first protective shell 51 and the second protective shell 52 are sleeved on the outside of the first sleeve 3 and the second sleeve 4. The inner surfaces of the first protective shell 51 and the second protective shell 52 are in contact with the outer walls of the first sleeve 3 and the second sleeve 4 to prevent dust from entering the magnetic coupling area and ensure the normal operation of the magnetic coupler. In addition, the limiting ring 56 limits the nut 55, which can effectively prevent the nut 55 from falling off the screw 54 when the first protective shell 51 and the second protective shell 52 are disassembled, making it convenient to use the protective component 5.

[0030] It should be noted that all the electrical components mentioned above are existing technology products. Those skilled in the art should select, install, and debug the circuits according to their needs to ensure that all electrical appliances function properly. All components are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are imposed here.

[0031] In use, guide bar 101, guide bar 21, positioning port 1 31 and positioning port 2 41 are used to enable quick positioning and installation of sleeve 1 3 and sleeve 2 4. Then, sleeve 1 3 and sleeve 2 4 are fixed to shaft 1 1 and shaft 2 2 with bolts. Then, protective shell 1 51 and protective shell 2 52 are fitted onto the outside of sleeve 1 3 and sleeve 2 4. Then, screw 54 is rotated down so that screw 54 is located in groove 53. Then, nut 55 is rotated so that protective shell 2 52 abuts against protective shell 1 51 to prevent dust from entering the magnetic coupling area.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A magnetic coupler, comprising a first shaft (1) and a second shaft (2), wherein a first sleeve (3) is fixedly mounted on the first shaft (1) by bolts, and a second sleeve (4) is fixedly mounted on the second shaft (2) by bolts, characterized in that: Both sleeve one (3) and sleeve two (4) are equipped with permanent magnets (6), and sleeve one (3) is provided with a protective component (5) on the outside. The protective component (5) includes: A protective shell one (51) is detachably connected to a protective shell two (52); Groove (53): Grooves (53) are provided on the outer walls of both the first protective shell (51) and the second protective shell (52). A screw (54) is hinged in the groove (53) of the first protective shell (51), and a nut (55) is threaded onto the screw (54). and a limiting ring (56), wherein the limiting ring (56) is detachably connected to the end of the screw (54) away from the protective shell (51) by bolts.

2. A magnetic coupler according to claim 1, characterized in that: The diameter of the nut (55) is greater than the diameter of the screw (54), and the diameter of the limiting ring (56) is greater than the diameter of the screw (54).

3. A magnetic coupler according to claim 1, characterized in that: By rotating the nut (55), the second protective shell (52) can come into contact with the first protective shell (51).

4. A magnetic coupler according to claim 1, characterized in that: The first protective shell (51) and the second protective shell (52) are fitted onto the outside of the first sleeve (3) and the second sleeve (4). The inner surfaces of the first protective shell (51) and the second protective shell (52) are in contact with the outer walls of the first sleeve (3) and the second sleeve (4) to prevent dust from entering the magnetic coupling area.

5. A magnetic coupler according to claim 1, characterized in that: The first sleeve (3) and the second sleeve (4) are separated by a certain distance.

6. A magnetic coupler according to claim 1, characterized in that: A guide bar 1 (101) is fixedly connected to the outer wall of shaft 1 (1), and a guide bar 2 (21) is fixedly connected to the outer wall of shaft 2 (2).

7. A magnetic coupler according to claim 6, characterized in that: The inner surface of the first sleeve (3) is provided with a positioning port (31), and the inner surface of the second sleeve (4) is provided with a positioning port (41). The first guide bar (101) matches the first positioning port (31), and the second guide bar (21) matches the second positioning port (41).

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