Method for installing permanent magnet of permanent magnet motor

Abstract

The invention provides a permanent magnet loading method for a permanent magnet motor. The permanent magnet loading method comprises the following steps: designing a permanent magnet leading-in sleeve; the permanent magnet leading-in sleeve is fastened on a rotor of the permanent magnet motor, the permanent magnet leading-in sleeve is tightened by a fastening bolt after being guided by a permanent magnet guide sample block and a permanent magnet groove profile on the rotor, and then the permanent magnet guide sample block is taken out; feeding the guide sample block into the permanent magnet groove from the notch of the permanent magnet guide sleeve again, verifying whether the guide sample block can smoothly and smoothly enter the permanent magnet groove, taking a single permanent magnet after the guide sample block smoothly passes, confirming the NS pole direction, holding the permanent magnet by two hands and putting the permanent magnet into the groove of the permanent magnet guide sleeve, and then pushing the permanent magnet to a required position by using a beating block for pushing the permanent magnet; the method is repeatedly operated, and the permanent magnet grooves of the permanent magnet motor are filled with the required number of permanent magnets; the permanent magnet lead-in sleeve with high loading efficiency and magnetic isolation can prevent the permanent magnet from being adsorbed with a rotor steel piece and the like when the permanent magnet is loaded, and the safety is greatly improved under the condition of manual loading.

Description

Technical Field

[0001] The invention relates to a manufacturing technology of a variable frequency permanent magnet integrated machine for mining, and in particular to a method for installing permanent magnets in a permanent magnet motor. Background Art

[0002] With the application of permanent magnet motors, new requirements are also put forward for the process methods in the manufacturing process of permanent magnet motors, especially the installation of permanent magnets in permanent magnet motors. Since permanent magnets are assembled in the magnetized state, the installation of permanent magnets becomes an important link in the absence of specific permanent magnet installation equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a method for installing permanent magnets in a permanent magnet motor.

[0004] A method for installing a permanent magnet in a permanent magnet motor comprises the following steps:

[0005] Step 1, designing a permanent magnet introduction sleeve, the permanent magnet introduction sleeve comprises a body, a notch and a screw hole, the notch and the screw hole are provided on the body, and the body is made of a magnetic isolation material;

[0006] Step 2: Fasten the permanent magnet guide sleeve to the permanent magnet motor rotor, align the permanent magnet guide sleeve with the permanent magnet groove on the rotor using the permanent magnet guide sample block, tighten it with the fastening bolts, and then take out the permanent magnet guide sample block;

[0007] Step 3: Send the guide sample block into the permanent magnet slot from the notch of the permanent magnet introduction sleeve again to verify whether it can enter smoothly. After passing smoothly, take a single permanent magnet, confirm the NS pole direction, hold the permanent magnet with both hands and put it into the slot of the permanent magnet introduction sleeve, and then use a permanent magnet pusher to push the permanent magnet to the required position. Repeat this method to fill the permanent magnet slot of the permanent magnet motor with the required number of permanent magnets;

[0008] Step 4. When a group of slots of the permanent magnet motor is filled with permanent magnets, take an iron sheet and place it at the slot opening. The permanent magnet will absorb the iron sheet to prevent the permanent magnet from jumping out of the slot. After all the permanent magnets are installed, fasten the permanent magnet baffle to the rotor and remove the iron sheet before tightening the bolts.

[0009] Preferably, the body is made of aluminum material, aluminum alloy material or copper material.

[0010] Preferably, the iron sheet in step 4 is 2 mm.

[0011] Preferably, during the assembly process, the permanent magnet is pressed in tightly with a copper pressing block without being knocked. When other tools are used during assembly, copper, aluminum, wood or stainless steel parts are used for operation. When tightening the wrench, attention should be paid to anti-magnetic.

[0012] Preferably, the permanent magnet guide sleeve is installed after the polarity direction of the permanent magnet motor magnet is determined. The permanent magnet motor magnet has a north pole and a south pole, and the polarity of the magnet needs to be ensured to be correct during installation; appropriate tools and equipment are prepared; before installing the magnet, the stator and rotor surfaces of the motor are cleaned to ensure that there is no dust and impurities.

[0013] Preferably, in step three, the permanent magnet introduction sleeve is guided by the permanent magnet guiding sample block and the guiding sample block screw and then screwed into the screw. Before the permanent magnet is installed, take a single permanent magnet to look at the NS pole direction, hold the permanent magnet with both hands and put it into the slot, and at the same time, press it with a push block to prevent the permanent magnet from turning over, and then use the push block screw and the front end of the permanent magnet block to send it to the required position. During the permanent magnet assembly process, a single permanent magnet must be installed, and the uninstalled permanent magnet must be kept at a distance of more than 2 meters from the rotor. Objects that are attracted to the magnet are not allowed within its range. During the assembly process, the permanent magnet can only be pressed in with a copper pressing block tightly, and it must not be knocked. When other tools are used in the assembly type, copper, aluminum, wood or stainless steel parts must be used for operation. Pay attention to anti-magnetic when using a tightening wrench. When assembling permanent magnets, operators should not carry watches and electronic communication objects.

[0014] The present invention uses a permanent magnet loading tire to ensure that the permanent magnet is smoothly loaded into the slot. At the same time, there are 8 pairs of permanent magnets with a total of 16 groups of slots. A permanent magnet introduction sleeve is installed once, and a pair of permanent magnets, that is, two groups of permanent magnets, can be loaded at the same time, so the loading efficiency is improved. The magnetically isolated permanent magnet introduction sleeve can prevent the permanent magnet from being adsorbed with the rotor steel parts when it is loaded. In the case of manual loading, the safety is greatly improved, and different slot types can be loaded through this method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a permanent magnet motor in a permanent magnet installed state;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure in the middle A direction;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure in the middle BB direction;

[0018] In the figure: permanent magnet introduction sleeve 1, fastening bolt 2, permanent magnet block 3, block screw 4, permanent magnet guide block 5, guide block screw 6. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention easier to understand, the technical solution of the present invention is now clearly and completely described in the form of specific embodiments in conjunction with the accompanying drawings.

[0020] Please also see Figure 1 , Figure 2 and Figure 3The method for installing permanent magnets in a permanent magnet motor comprises the following steps:

[0021] Step 1, designing a permanent magnet introduction sleeve 1, the permanent magnet introduction sleeve 1 comprises a body, a notch and a screw hole, the notch and the screw hole are provided on the body, and the body is made of a magnetic isolation material;

[0022] Step 2: Fasten the permanent magnet introduction sleeve 1 to the permanent magnet motor rotor, align the permanent magnet introduction sleeve 1 with the permanent magnet alignment sample block 5 and the permanent magnet slot on the rotor, tighten it with the fastening bolts 2, and then take out the permanent magnet alignment sample block 5;

[0023] Step 3, again send the guide sample block 5 from the notch of the permanent magnet introduction sleeve into the permanent magnet slot to verify whether it can enter smoothly and successfully. After passing smoothly, take a single permanent magnet, confirm the NS pole direction, hold the permanent magnet with both hands and put it into the slot of the permanent magnet introduction sleeve, and then use the permanent magnet pusher 3 to push the permanent magnet to the required position. Repeat this method to fill the permanent magnet slot of the permanent magnet motor with the required number of permanent magnets;

[0024] Step 4. When a group of slots of the permanent magnet motor is filled with permanent magnets, take an iron sheet and place it at the slot opening. The permanent magnet will absorb the iron sheet to prevent the permanent magnet from jumping out of the slot. After all the permanent magnets are installed, fasten the permanent magnet baffle to the rotor and remove the iron sheet before tightening the bolts.

[0025] The body is made of aluminum, aluminum alloy or copper.

[0026] The iron sheet in step 4 is 2mm.

[0027] During the assembly process of permanent magnets, use copper pressure blocks to press them in tightly and do not knock them. When using other tools during assembly, use copper, aluminum, wood or stainless steel parts. When using tightening wrenches, pay attention to anti-magnetic.

[0028] After determining the polarity direction of the permanent magnet motor magnet, install the permanent magnet guide sleeve. The permanent magnet motor magnet has a north pole and a south pole. During installation, ensure that the polarity of the magnet is correct; prepare appropriate tools and equipment; before installing the magnet, clean the stator and rotor surfaces of the motor to ensure that there is no dust and impurities.

[0029] In step three, the permanent magnet guide sleeve is guided by the permanent magnet guide sample block 5 and the guide sample block screw 6 and then screwed in. Before the permanent magnet is installed, take a single permanent magnet and look at the NS pole direction. Hold the permanent magnet tightly with both hands and put it into the slot. At the same time, press it with the push block 3 to prevent the permanent magnet from turning over. Then use the push block screw 4 and the front end of the permanent magnet block 3 to send it to the required position. During the permanent magnet assembly process, a single permanent magnet must be installed. The uninstalled permanent magnet must be kept at a distance of more than 2 meters from the rotor. Objects that are attracted to the magnet are not allowed within its range. During the assembly process, the permanent magnet can only be pressed in with a copper pressing block tightly, and it must not be knocked. When other tools are used in the assembly type, copper, aluminum, wood or stainless steel parts must be used for operation. Pay attention to anti-magnetic when using the tightening wrench. Operators should not carry watches and electronic communication items when assembling permanent magnets.

[0030] The present invention uses a permanent magnet loading tire to ensure that the permanent magnet is smoothly loaded into the slot. At the same time, there are 8 pairs of permanent magnets with a total of 16 groups of slots. The permanent magnet introduction sleeve 1 is installed once, and a pair of permanent magnets, that is, two groups of permanent magnets, can be loaded at the same time, so the loading efficiency is improved. The magnetically isolated permanent magnet introduction sleeve 1 can prevent the permanent magnet from being adsorbed with the rotor steel parts when it is loaded. In the case of manual loading, the safety is greatly improved, and different slot types can be loaded through this method.

[0031] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that can be thought of by ordinary technicians in this field without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A method for loading permanent magnets into a permanent magnet motor, characterized in that: The method for installing permanent magnets in a permanent magnet motor comprises the following steps: Step 1, designing a permanent magnet introduction sleeve, the permanent magnet introduction sleeve comprises a body, a notch and a screw hole, the notch and the screw hole are provided on the body, and the body is made of a magnetic isolation material; Step 2: Fasten the permanent magnet guide sleeve to the permanent magnet motor rotor, align the permanent magnet guide sleeve with the permanent magnet groove on the rotor using the permanent magnet guide sample block, tighten it with the fastening bolts, and then take out the permanent magnet guide sample block; Step 3: Send the guide sample block into the permanent magnet slot from the notch of the permanent magnet introduction sleeve again to verify whether it can enter smoothly. After passing smoothly, take a single permanent magnet, confirm the NS pole direction, hold the permanent magnet with both hands and put it into the slot of the permanent magnet introduction sleeve, and then use a permanent magnet pusher to push the permanent magnet to the required position. Repeat this method to fill the permanent magnet slot of the permanent magnet motor with the required number of permanent magnets; Step 4. When a group of slots of the permanent magnet motor is filled with permanent magnets, take an iron sheet and place it at the slot opening. The permanent magnet will absorb the iron sheet to prevent the permanent magnet from jumping out of the slot. After all the permanent magnets are installed, fasten the permanent magnet baffle to the rotor and remove the iron sheet before tightening the bolts.

2. A method for loading permanent magnets into a permanent magnet motor as claimed in claim 1, characterized in that: The body is made of aluminum, aluminum alloy or copper.

3. A method for loading permanent magnets into a permanent magnet motor as claimed in claim 1, characterized in that: The iron sheet in step 4 is 2mm.

4. A method for loading permanent magnets into a permanent magnet motor as claimed in claim 3, characterized in that: During the assembly process of permanent magnets, use copper pressure blocks to press them in tightly and do not knock them. When using other tools during assembly, use copper, aluminum, wood or stainless steel parts. When using tightening wrenches, pay attention to anti-magnetic.

5. A method for loading permanent magnets into a permanent magnet motor as claimed in claim 4, characterized in that: After determining the polarity direction of the permanent magnet motor magnet, install the permanent magnet guide sleeve. The permanent magnet motor magnet has a north pole and a south pole. When installing, ensure that the polarity of the magnet is correct; prepare appropriate tools and equipment; Before installing the magnets, clean the stator and rotor surfaces of the motor to ensure they are free of dust and impurities.

6. A method for loading permanent magnets into a permanent magnet motor as claimed in claim 1, characterized in that: In step three, the permanent magnet guide sleeve should be guided by the permanent magnet guide block and the guide block screw before screwing in the screw. Before installing the permanent magnet, take a single permanent magnet and look at the NS pole direction. Hold the permanent magnet tightly with both hands and put it into the slot. At the same time, press it with a push block to prevent the permanent magnet from turning over. Then use the push block screw and the front end of the permanent magnet block to send it to the required position. During the permanent magnet assembly process, a single permanent magnet should be installed. The uninstalled permanent magnet should be kept at a distance of more than 2 meters from the rotor. Objects that are attracted to the magnet are not allowed within its range. During the assembly process, the permanent magnet can only be pressed in with a copper pressure block, and it must not be knocked. When other tools are used in the assembly, copper, aluminum, wood or stainless steel parts should be used for operation. Pay attention to anti-magnetic when using the tightening wrench. Operators should not carry watches and electronic communication items when assembling permanent magnets.

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