Rotor magnet fixing device of paper machine alternating current permanent magnet servo motor

Abstract

The utility model discloses a rotor magnet fixing device for an alternating current permanent magnet servo motor of a paper machine, which comprises a motor casing for the alternating current permanent magnet servo motor of the paper machine, and a detachable motor rotor magnet is arranged in the motor casing. An installation end cover used for positioning the motor rotor magnet is arranged on the side face of the motor shell and corresponds to the position of the motor rotor magnet, one side of the motor rotor magnet is fixedly connected with a first reinforcing piece, and the other side of the motor rotor magnet is fixedly connected with a second reinforcing piece. According to the utility model, the motor rotor magnet is installed and fixed in a clamping manner, so that the motor rotor magnet is convenient to disassemble and assemble, the motor rotor magnet is convenient to maintain or replace when damaged, and meanwhile, under the supporting action of the elastic supporting sheets, the installation stability of the motor rotor magnet is greatly improved, and the service life of the motor rotor magnet is prolonged. Therefore, the motor rotor magnet can be effectively prevented from falling off in the use process.

Description

Technical Field

[0001] This utility model belongs to the field of AC permanent magnet servo motor technology, specifically relating to a rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine. Background Technology

[0002] The AC permanent magnet servo motor for papermaking machines is an electromechanical product that converts electrical energy into kinetic energy. It is made using the principle that an energized coil rotates under the force of a magnetic field. The magnet is the key component that converts electrical energy into kinetic energy. Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines.

[0003] Chinese Patent No. CN211296359U discloses a rotor magnet in which a positioning groove is formed by a partial inward indentation on the outer surface of the rotor magnet. The beneficial effects of this invention are: the positioning groove can be used to orient and position the magnetic poles of the rotor magnet during its forming process, ensuring that the bisector of the end face of the positioning groove and the center line of the magnetic poles of the rotor magnet are aligned, resulting in better magnetic properties after the rotor magnet is magnetized.

[0004] The existing method for fixing magnets involves first applying adhesive to the magnet, then using pliers to position the magnet on the inner wall of the motor housing. The pliers must be removed only after the adhesive has dried and set to secure the magnet. While this bonding method has a certain fixing effect, the process is cumbersome, the assembly time is long, and the production efficiency is low. Furthermore, since the motor generates heat during operation, the adhesive will soften when heated, causing the magnet to detach from the inner wall of the motor housing. Utility Model Content

[0005] The purpose of this utility model is to provide a rotor magnet fixing device for an AC permanent magnet servo motor of a papermaking machine, so as to solve the technical defects of the existing magnet fixing method, which is to first apply glue to the magnet and then use pliers to position the magnet to the inner wall of the motor housing. This bonding method has a complicated processing procedure, long assembly time, and low production efficiency. Since the motor generates heat during operation, the glue will soften after being heated, causing the magnet to fall off the inner wall of the motor housing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rotor magnet fixing device for an AC permanent magnet servo motor of a papermaking machine includes a motor housing, inside which a detachable motor rotor magnet is installed, and a mounting end cover for positioning the motor rotor magnet is provided on the side of the motor housing at the position corresponding to the position of the motor rotor magnet.

[0008] As a further embodiment of this utility model, a first reinforcing plate is fixedly connected to one side of the motor rotor magnet, and a second reinforcing plate is fixedly connected to the other side of the motor rotor magnet.

[0009] As a further embodiment of this utility model, two elastic support plates are symmetrically arranged inside the motor housing and at positions corresponding to the motor rotor magnets.

[0010] As a further embodiment of this utility model, a number of fixing bolts are arranged at equal intervals at the edge of the mounting end cover, and the mounting end cover is fixedly connected to the side of the motor housing by the fixing bolts.

[0011] As a further embodiment of this utility model, a rotor shaft hole is provided at the center of the mounting end cover.

[0012] As a preferred embodiment of this utility model, the mounting end cover is also threadedly connected with a threaded pin for fixing the motor rotor magnet. The mounting end cover and the position corresponding to the threaded pin are provided with an internal thread that meshes with the threaded pin. The side of the second reinforcing plate and the position corresponding to the threaded pin are provided with a mounting hole that cooperates with the threaded pin.

[0013] As a further embodiment of this utility model, the side of the first reinforcing plate is provided with two symmetrically arranged limiting holes, and the side of the inner wall of the motor housing is fixedly connected with a limiting post that matches the limiting hole.

[0014] As a further embodiment of this utility model, a limiting groove matching the elastic support plate is provided on the motor rotor magnet at the position corresponding to the elastic support plate.

[0015] As a further embodiment of this utility model, a rotating handle for rotating the threaded pin is fixedly connected to the end of the threaded pin.

[0016] Compared with the prior art, the rotor magnet fixing device of the AC permanent magnet servo motor of the papermaking machine provided by this utility model has the following advantages: the motor rotor magnet is installed and fixed by snap-fit, which facilitates the disassembly and assembly of the motor rotor magnet. Therefore, it is convenient to maintain or replace the motor rotor magnet when it is damaged. At the same time, under the support of the elastic support plate, the stability of the motor rotor magnet installation is greatly increased, which can effectively prevent the motor rotor magnet from falling off during use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the motor housing in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure for installing the end cap in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the motor rotor magnet in an embodiment of this utility model. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the structure of the motor rotor magnet in an embodiment of this utility model. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the structure of the motor rotor magnet in an embodiment of this utility model. Figure 3 ;

[0025] Figure 8 This is a schematic diagram of the structure of the elastic support sheet in an embodiment of this utility model.

[0026] Figure label:

[0027] 1. Motor housing; 2. Motor rotor magnet; 3. Mounting end cover;

[0028] 201. First reinforcing plate; 2011. Limiting hole; 2012. Limiting post;

[0029] 202. Second reinforcing plate; 2021. Mounting clip hole;

[0030] 203. Elastic support plate; 2031. Limiting groove;

[0031] 301. Fixing bolts;

[0032] 302. Rotor shaft hole;

[0033] 303, threaded pin; 3031, rotary handle. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0036] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0037] See appendix Figure 1-8 As shown in the figure, an embodiment of the present invention provides a rotor magnet fixing device for an AC permanent magnet servo motor of a papermaking machine, including a motor housing 1, a detachable motor rotor magnet 2 installed inside the motor housing 1, and an installation end cover 3 for positioning the motor rotor magnet 2 provided on the side of the motor housing 1 and at the position corresponding to the position of the motor rotor magnet 2.

[0038] See appendix Figure 5-7 As shown, a first reinforcing plate 201 is fixedly connected to one side of the motor rotor magnet 2, and a second reinforcing plate 202 is fixedly connected to the other side of the motor rotor magnet 2. By setting the first reinforcing plate 201 and the second reinforcing plate 202, the overall stability of the motor rotor magnet 2 is increased.

[0039] See appendix Figure 2 As shown, two elastic support plates 203 are symmetrically arranged inside the motor housing 1 and at the position corresponding to the motor rotor magnet 2.

[0040] The rotor magnet fixing device of the AC permanent magnet servo motor of the papermaking machine described above uses a snap-fit ​​method to install and fix the motor rotor magnet 2, which facilitates the disassembly and assembly of the motor rotor magnet 2. Therefore, it is convenient to maintain or replace the motor rotor magnet 2 when it is damaged. At the same time, under the support of the elastic support plate 203, the installation stability of the motor rotor magnet 2 is greatly increased, which can effectively prevent the motor rotor magnet 2 from falling off during use.

[0041] See appendix Figure 4As shown, a number of fixing bolts 301 are arranged at equal intervals at the edge of the mounting end cover 3, and the mounting end cover 3 is fixedly connected to the side of the motor housing 1 by the fixing bolts 301. The fixing bolts 301 increase the convenience of mounting end cover 3 assembly and disassembly.

[0042] A rotor shaft hole 302 is provided at the center of the mounting end cover 3, which provides space for the rotor shaft.

[0043] The mounting end cover 3 is also threaded with a threaded pin 303 for fixing the motor rotor magnet 2. The mounting end cover 3 has an internal thread that meshes with the threaded pin 303 at the corresponding position. The side of the second reinforcing plate 202 has a mounting hole 2021 that works with the threaded pin 303 at the corresponding position. The threaded pin 303 increases the convenience of fixing the motor rotor magnet 2.

[0044] In order to limit the motor rotor magnet 2 and thus increase the stability of the motor rotor magnet 2 installed inside the motor housing 1, in this embodiment of the utility model, the side of the first reinforcing plate 201 is provided with two symmetrically arranged limiting holes 2011, and the side of the inner wall of the motor housing 1 and the position corresponding to the limiting holes 2011 are fixedly connected with limiting posts 2012 that match the limiting holes 2011.

[0045] See appendix Figure 5 As shown, in order to increase the stability of the elastic support plate 203 supporting the motor rotor magnet 2, in this embodiment of the utility model, a limiting groove 2031 matching the elastic support plate 203 is provided on the motor rotor magnet 2 at the position corresponding to the elastic support plate 203.

[0046] In order to facilitate the rotation of the threaded pin 303 and thus improve the ease of disassembly and assembly of the motor rotor magnet 2, in this embodiment of the utility model, a rotating handle 3031 for rotating the threaded pin 303 is fixedly connected to the end of the threaded pin 303.

[0047] In summary, when using this embodiment of the utility model, rotating the handle 3031 rotates the threaded locking pin 303, causing the threaded locking pin 303 to engage with the corresponding mounting hole 2021. This allows the motor rotor magnet 2 to be installed and fixed by a snap-fit ​​mechanism, facilitating the assembly and disassembly of the motor rotor magnet 2. Therefore, it is convenient to maintain or replace the motor rotor magnet 2 when it is damaged. At the same time, the elastic support plate 203 supports the motor rotor magnet 2 within the limiting groove 2031 on the motor rotor magnet 2. Furthermore, the limiting action of the limiting hole 2011 and the limiting pin 2012 greatly increases the stability of the motor rotor magnet 2 installed inside the motor housing 1, effectively preventing the motor rotor magnet 2 from falling off during use. Therefore, this improves the practicality of the utility model.

[0048] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotor magnet fixing device for an AC permanent magnet servo motor of a papermaking machine, comprising a motor housing (1) for the AC permanent magnet servo motor of the papermaking machine, characterized in that: The motor housing (1) is equipped with a detachable motor rotor magnet (2), and the side of the motor housing (1) and the position corresponding to the motor rotor magnet (2) are provided with a mounting end cover (3) for positioning the motor rotor magnet (2).

2. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 1, characterized in that: A first reinforcing plate (201) is fixedly connected to one side of the motor rotor magnet (2), and a second reinforcing plate (202) is fixedly connected to the other side of the motor rotor magnet (2).

3. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 2, characterized in that: Two elastic support plates (203) are symmetrically arranged inside the motor housing (1) and at the position corresponding to the motor rotor magnet (2).

4. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 3, characterized in that: The mounting end cover (3) is provided with a number of fixing bolts (301) arranged at equal intervals at its edge, and the mounting end cover (3) is fixedly connected to the side of the motor housing (1) by the fixing bolts (301).

5. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 4, characterized in that: The mounting end cover (3) has a rotor shaft hole (302) at its center.

6. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 5, characterized in that: The mounting end cover (3) is also threaded with a threaded pin (303) for fixing the motor rotor magnet (2). The mounting end cover (3) is provided with an internal thread that meshes with the threaded pin (303) at the position corresponding to the threaded pin (303). The side of the second reinforcing plate (202) is provided with a mounting hole (2021) that cooperates with the threaded pin (303) at the position corresponding to the threaded pin (303).

7. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 6, characterized in that: The first reinforcing plate (201) has two symmetrically arranged limiting holes (2011) on its side. The inner wall of the motor housing (1) is fixedly connected with a limiting post (2012) that matches the limiting hole (2011) on its side.

8. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 7, characterized in that: The motor rotor magnet (2) has a limiting groove (2031) that matches the elastic support plate (203) at the position corresponding to the position of the elastic support plate (203).

9. The rotor magnet fixing device for an AC permanent magnet servo motor in a papermaking machine according to claim 8, characterized in that: The end of the threaded pin (303) is fixedly connected to a rotating handle (3031) for rotating the threaded pin (303).

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