A permanent magnet motor with easy access to internal components

Abstract

The application relates to the motor technical field and discloses a permanent magnet motor facilitating overhauling of internal components, which comprises a base, the top of the base is fixedly connected with a motor shell, the top of the motor shell is fixedly connected with a machine top cover, the inner wall of the motor shell is rotatably connected with a rotor through a rotating shaft on one side, the right side of the inner wall of the motor shell is fixedly connected with a protective shell, the inner wall of the motor shell is fixedly connected with a partition plate, the end, away from the inner wall of the motor shell, of the rotor is rotatably connected with the surface of the partition plate, and the permanent magnet motor further comprises a fixing assembly which comprises a clamping disc fixedly connected with one end of an elastic telescopic rod, the surface of the clamping disc is fixedly connected with a clamping column, and the inner wall of the clamping column is fixedly connected with compression arms on both sides. When the inside of the whole motor cover needs to be overhauled, the motor cover is taken out from the surface of the clamping disc for overhauling by improving the tensile strength, the inside of the permanent magnet motor can be overhauled flexibly, and the overhauling efficiency of the inside of the permanent magnet motor is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric machines, in particular to a permanent magnet motor facilitating maintenance of internal components. BACKGROUND

[0002] An electric motor is a device for converting electrical energy into mechanical energy. It uses the rotating magnetic field generated by the current coil (i.e. the stator winding) to act on the rotor (e.g. a squirrel cage closed aluminum frame) to form a magnetic power rotation torque. Electric motors are divided into direct current motors and alternating current motors according to the power source. Most electric motors in power systems are alternating current motors, which can be synchronous motors or asynchronous motors.

[0003] The patent application with the application number CN202022689048.1 discloses a permanent magnet motor facilitating maintenance of internal components, which comprises a motor shell and a mounting base mounted at the bottom of the motor shell. The inside of the motor shell is provided with a mounting shell, the top of the mounting shell is provided with a sealing cover, the bottom of the sealing cover is fixedly connected with a sealing plate plug, the mounting shell and the top end of the motor shell are threadedly connected with each other, and the bottom of the sealing plate plug is provided with a rotor iron core.

[0004] However, the patent also has the following shortcomings. The current permanent magnet motor adopts a sealing type mounting mechanism, so that the internal components of the permanent magnet motor cannot be quickly and effectively maintained when maintenance is required. The internal components of the motor will be high in temperature due to high-speed operation, and need to be cooled before maintenance. In view of this situation, the application provides a permanent magnet motor facilitating maintenance of internal components. SUMMARY

[0005] The application aims to provide a permanent magnet motor facilitating maintenance of internal components to solve the problems in the background.

[0006] In order to solve the above technical problems, the application provides the following technical scheme. A permanent magnet motor facilitating maintenance of internal components comprises a base, the top of the base is fixedly connected with a motor shell, the top of the motor shell is fixedly connected with a machine top cover, the inner wall of the motor shell is rotatably connected with a rotor through a rotating shaft on one side, the inner wall right side of the motor shell is fixedly connected with a protective shell, the inner wall of the motor shell is fixedly connected with a partition plate, the end of the rotor away from the inner wall of the motor shell is rotatably connected with the surface of the partition plate, and the inner wall left side of the motor shell is provided with a stretching mechanism.

[0007] The stretching mechanism comprises a side ring fixedly connected with the surface of the partition plate, the inner wall of the side ring is fixedly connected with a connecting block on both sides, and the inner wall of the connecting block is slidably connected with a telescopic rod. When the motor cover is pulled outward, one end of the telescopic rod is pulled out from the inside of the connecting block.

[0008] The fixed assembly comprises a clamping disc fixedly connected with one end of the telescopic rod, the surface of the clamping disc is fixedly connected with a clamping column, the inner wall of the clamping column is fixedly connected with a compression arm on both sides, the top of the compression arm is fixedly connected with a plug-in block, and the surface of the clamping disc is provided with a clamping mechanism.

[0009] According to the technical scheme, the clamping mechanism comprises a motor cover, the right side of the motor cover is provided with a clamping groove, the clamping groove is in sliding connection with the surface of the clamping disc, the clamping column is in sliding contact with the inner wall of the clamping groove, the left side of the motor cover is fixedly connected with a pulling bolt, the inner wall bottom of the motor cover is fixedly connected with a sliding table, the top of the sliding table is fixedly connected with a connecting frame, and the motor cover is pulled out from the surface of the edge ring through the telescopic rod.

[0010] The pushing assembly comprises a telescopic frame in sliding connection with the surface of the sliding table, the right side of the telescopic frame is rotationally connected with the left side of the connecting shell fixedly connected with the telescopic frame through a rotating shaft, the end, away from the telescopic frame, of the connecting shell is fixedly connected with a pushing cover, the surface of the connecting shell is in sliding connection with the surface of the sliding table, and one end of the telescopic frame is fixedly connected with the connecting frame.

[0011] According to the technical scheme, the surface of the telescopic frame is provided with a plug-in hole, and the left side of the pushing cover is fixedly connected with a pushing ring.

[0012] According to the technical scheme, the stretching mechanism comprises a cladding shell, the two sides of the cladding shell are rotationally connected with the inner walls of the motor shell through rotating shafts, the right side of the cladding shell is fixedly connected with a folding belt, the inner wall of the folding belt is fixedly connected with a stretching rod, one end of the stretching rod is in sliding connection with the inner wall of the cladding shell, the surface of the cladding shell is fixedly connected with a compression rod, one end of the compression rod is fixedly connected with one end of the stretching rod, the end, away from the cladding shell, of the compression rod is fixedly connected with a pushing frame, and the end, away from the cladding shell, of the folding belt is provided with a cladding assembly.

[0013] According to the technical scheme, the surface of the cladding shell is provided with a heat dissipation groove, and the folding belt has a compression reset function.

[0014] According to the above technical solution, the covering component includes a covering frame, which is fixedly connected to one end of a folding strap. Contact feet are fixedly connected to both sides of the covering frame. A connecting groove is formed on the surface of the covering frame. A movable cavity is fixedly connected to the bottom of the inner wall of the covering frame. A protective film is slidably connected to the slots at both ends of the movable cavity. An attachment ring is fixedly connected to the surface of the protective film. The folding strap contracts inward and generates air pressure, which is discharged into the movable cavity inside the covering frame.

[0015] According to the above technical solution, the protective film has stretchable properties, and the surface of the attachment ring has adsorption holes. The attachment ring is used to adsorb and fix with the inner wall of the shell. The attachment ring on the surface of the protective film will generate magnetic adsorption with both sides of the shell.

[0016] According to the above technical solution, the compression arm has the characteristics of telescopic rebound, and the plug block is arc-shaped. By applying force to the motor cover, the inside of the snap-fit ​​groove squeezes the surface of the plug block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By setting up a fixing component, when it is necessary to inspect the fan inside the motor cover, it is only necessary to pull the motor cover to the point where it cannot be pulled outward with ordinary tensile strength. However, when it is necessary to inspect the entire inside of the motor cover, it is necessary to increase the tensile strength to remove the motor cover from the surface of the retaining plate for inspection. By setting up this mechanism, the inside of the permanent magnet motor can be flexibly inspected, thereby improving the efficiency of the inspection of the inside of the permanent magnet motor.

[0019] 2. By setting up a snap-fit ​​mechanism, when the push cover drives the connecting shell to slide outward on the surface of the slide table, the insertion hole on the surface of the telescopic frame will separate from the surface of the connecting frame due to the pull. When the fan is completely removed from the inside of the motor cover by sliding the connecting shell on the surface of the slide table, the internal circuit of the fan can be inspected. By setting up this mechanism, the internal components of the motor cover can be inspected quickly and the inspection efficiency can be improved.

[0020] 3. By setting up a stretching mechanism, the present invention introduces heat into the surface of the covering shell through the arc-shaped covering frame surface. The heat flows outward through the heat dissipation grooves on the surface of the covering shell. By setting up this mechanism, the operating heat on the rotor surface can be greatly reduced. When maintenance is required, the covering frame is pulled out from the surface of the rotor, and the covering shell is pulled outward to be pulled out of the motor. Then the surface of the rotor can be inspected, thereby reducing the maintenance time of the internal components of the motor housing.

[0021] 4. The application sets a protective film, and the protective film blocks the heat dissipation holes on the surface of the cladding shell. When the permanent magnet motor is not running, the protective film is attached to the inner wall of the cladding shell by pulling the push frame outward, so that the humidity in the air does not increase, and water vapor does not enter the inside of the motor shell through the heat dissipation holes on the surface of the cladding shell, causing the internal components of the permanent magnet motor to rust. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a partial schematic diagram of the cladding shell of the application;

[0024] Figure 3 It is a perspective view of the extension mechanism of the application;

[0025] Figure 4 It is a perspective view of the fixing assembly of the application;

[0026] Figure 5 It is a perspective view of the clamping mechanism of the application;

[0027] Figure 6 It is a perspective view of the push assembly of the application;

[0028] Figure 7 It is a perspective view of the stretching mechanism of the application;

[0029] Figure 8 It is a perspective view of the cladding assembly of the application;

[0030] Figure 9 It is a schematic diagram of the cross-sectional structure of the movable cavity of the application.

[0031] In the figure: 1, base; 2, motor shell; 3, rotor; 4, machine top cover; 5, partition; 6, protective shell; 7, extension mechanism; 701, edge ring; 702, connecting block; 703, extension rod; 704, fixing assembly; 7041, clamping disc; 7042, clamping column; 7043, compression arm; 7044, plug-in block; 8, clamping mechanism; 801, motor cover; 802, pulling bolt; 803, clamping groove; 804, sliding table; 805, push assembly; 8051, push cover; 8052, connecting shell; 8053, extension frame; 8054, fan; 806, connecting frame; 9, stretching mechanism; 901, cladding shell; 902, folding belt; 903, compression rod; 904, push frame; 905, stretching rod; 906, cladding assembly; 9061, cladding frame; 9062, connecting groove; 9063, contact foot; 9064, movable cavity; 9065, protective film; 9066, attachment ring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments of the present application.

[0033] Examples of the described embodiments are shown in the accompanying drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the present application, unless explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Embodiment one: refer to Figures 1-5 The present application provides a technical scheme: a permanent magnet motor convenient for overhauling internal components, comprising a base 1, the top of the base 1 is fixedly connected with a motor shell 2, the top of the motor shell 2 is fixedly connected with a machine top cover 4, the inner wall of the motor shell 2 is rotatably connected with a rotor 3 through a rotating shaft on one side, the right side of the inner wall of the motor shell 2 is fixedly connected with a protective shell 6, the inner wall of the motor shell 2 is fixedly connected with a partition plate 5, the end of the rotor 3 away from the inner wall of the motor shell 2 is rotatably connected with the surface of the partition plate 5, the left side of the inner wall of the motor shell 2 is provided with a stretching mechanism 9, further comprising:

[0036] The telescopic mechanism 7 comprises a side ring 701 fixedly connected with the surface of the partition plate 5, the inner wall of the side ring 701 is fixedly connected with a connecting block 702 on both sides, the inner wall of the connecting block 702 is slidably connected with a telescopic rod 703, when it is needed to overhaul the inside of the motor cover 801, the motor cover 801 can be pulled outward by pulling the bolt 802, one end of the telescopic rod 703 is fixedly connected with the clamping disc 7041 through a bolt, the other end is slidably connected with the connecting block 702. When the motor cover 801 is pulled, the telescopic rod 703 slides in the connecting block 702, driving the clamping disc 7041 to move. When the motor cover 801 is pulled outward, the one end of the telescopic rod 703 is pulled out from the inside of the connecting block 702. When the one end of the telescopic rod 703 is pulled outward to a certain distance, the clamping groove 803 on the surface of the motor cover 801 is connected with the inside of the plug-in block 7044 through the connecting hole.

[0037] The clamping mechanism 8 comprises a motor cover 801, the right side of the motor cover 801 is provided with a clamping groove 803, the clamping groove 803 is in sliding connection with the surface of the clamping disc 7041, the clamping column 7042 is in sliding contact with the inner wall of the clamping groove 803, the left side of the motor cover 801 is fixedly connected with a pulling bolt 802, the inner wall bottom of the motor cover 801 is fixedly connected with a sliding table 804, the top of the sliding table 804 is fixedly connected with a connecting frame 806, after the motor cover 801 is pulled outward, the plug-in block 7044 is plugged in the clamping groove 803, so that the motor cover 801 is difficult to be quickly separated from the surface of the clamping disc 7041.

[0038] The fixed assembly 704 comprises a clamping disc 7041 fixedly connected with one end of the telescopic rod 703, the surface of the clamping disc 7041 is fixedly connected with a clamping column 7042, the inner wall of the clamping column 7042 is fixedly connected with a compression arm 7043 on both sides, the top of the compression arm 7043 is fixedly connected with a plug-in block 7044, the surface of the clamping disc 7041 is provided with the clamping mechanism 8, at this time, the motor cover 801 needs to be applied with force, so that the clamping groove 803 internally extrudes the surface of the plug-in block 7044, so as to drive the compression arm 7043 at the bottom of the plug-in block 7044 to slide and stretch to the inner wall of the clamping disc 7041 due to the external pressure, the compression arm 7043 is a spring type telescopic rod, and a reset spring is arranged in the compression arm 7043. When the motor cover 801 is pulled, the clamping groove 803 is in sliding connection with the surface of the clamping disc 7041, and the clamping column 7042 is in contact with the inner wall of the clamping groove 803. As the pulling force increases, the clamping groove 803 extrudes the plug-in block 7044, the compression arm 7043 is contracted, and the plug-in block 7044 is retracted to the inside of the clamping disc 7041, so that the clamping disc 7041 is separated from the clamping groove 803. When the pressure is removed, the reset spring pushes the compression arm 7043 to reset, and drives the plug-in block 7044 to stretch out.

[0039] The compression arm 7043 has the characteristics of telescopic rebound, and the plug-in block 7044 is in the shape of a circular arc, when the fan 8054 in the motor cover 801 needs to be overhauled, the motor cover 801 only needs to be pulled to a degree that cannot be pulled outward by using ordinary tensile strength, and when the entire motor cover 801 needs to be overhauled, the tensile strength needs to be improved to take out the motor cover 801 from the surface of the clamping disc 7041 for overhaul, so that the interior of the permanent magnet motor can be flexibly overhauled, and the overhauling efficiency of the interior of the permanent magnet motor is improved.

[0040] In the embodiment one, the clamping disc 7041 is fixedly connected with one end of the telescopic rod 703, the surface of the clamping disc 7041 is fixedly connected with the clamping column 7042, the inner wall of the clamping column 7042 is fixedly connected with the compression arm 7043 on both sides, the top of the compression arm 7043 is fixedly connected with the plug-in block 7044, the surface of the clamping disc 7041 is provided with the clamping mechanism 8, and the motor cover 801 needs to be applied with force, so that the clamping groove 803 internally extrudes the surface of the plug-in block 7044, so as to drive the compression arm 7043 at the bottom of the plug-in block 7044 to slide and stretch to the inner wall of the clamping disc 7041 due to the external pressure. Figure 6 The technical scheme provided by the application is as follows.

[0041] The push assembly 805 includes a telescopic frame 8053 that is slidably connected to the surface of the slide table 804. The right side of the telescopic frame 8053 is rotatably connected to the left side of the telescopic frame 8053 via a pivot, and a push cover 8051 is fixedly connected to the end of the connecting cover 8052 away from the telescopic frame 8053. The connecting cover 8052 is slidably connected to the surface of the slide table 804. The telescopic frame 8053 is inserted and fixed to one end of the connecting frame 806. When the motor cover 801 is pulled out from the surface of the side ring 701 by the telescopic rod 703, if it is necessary to inspect the inside of the fan 8054, the push cover 8051 is pulled outward by the push ring on the left side of the push cover 8051. This will cause the push cover 8051 to separate from the left connecting hole of the motor cover 801.

[0042] The telescopic frame 8053 has a plug-in hole on its surface, and a push ring is fixedly connected to the left side of the push cover 8051. When the push cover 8051 drives the connecting shell 8052 to slide outward on the surface of the slide table 804, the plug-in hole on the surface of the telescopic frame 8053 will separate from the surface of the connecting frame 806 due to the pull. When the fan 8054 is completely removed from the inside of the motor cover 801 by sliding the connecting shell 8052 on the surface of the slide table 804, the internal circuit of the fan 8054 can be inspected and repaired. This allows for quick inspection and repair of the internal components of the motor cover 801 and improves inspection efficiency.

[0043] Example 3: Based on Example 2, please refer to the following... Figures 7-9 The present invention provides a technical solution: the stretching mechanism 9 includes a covering shell 901, the two sides of which are rotatably connected to the inner walls of the motor housing 2 via rotating shafts. A folding belt 902 is fixedly connected to the right side of the covering shell 901, and a stretching rod 905 is fixedly connected to the inner wall of the folding belt 902. One end of the stretching rod 905 is slidably connected to the inner wall of the covering shell 901. A compression rod 903 is fixedly connected to the surface of the covering shell 901, and one end of the compression rod 903 is fixedly connected to one end of the stretching rod 905. The compression rod 903 is fixedly connected to a pusher 904 at the end away from the cover shell 901. The folding strap 902 is provided with a cover assembly 906 at the end away from the cover shell 901. Before opening the cover shell 901 from the inside of the motor housing 2, the pusher 904 is pulled outward. The pusher 904 drives the compression rod 903 to stretch outward. When one end of the compression rod 903 extends and retracts outward, it will drive one end of the stretching rod 905 to slide and extend and retract on the inner wall of the cover shell 901.

[0044] The surface of the shell 901 is provided with heat dissipation grooves, and the folding strip 902 has a compression and reset function. When one end of the tension rod 905 slides and extends, it will pull the folding strip 902 fixed on the surface of the tension rod 905, thereby causing the folding strip 902 to extend and fold towards the shell 901.

[0045] The covering assembly 906 comprises a covering frame 9061 fixedly connected with one end of the folding belt 902, two contact feet 9063 fixedly connected with the two sides of the covering frame 9061, a connecting groove 9062 formed in the surface of the covering frame 9061, an activity cavity 9064 fixedly connected with the bottom of the inner wall of the covering frame 9061, a protective film 9065 slidingly connected with the two end groove holes of the activity cavity 9064, and a sticking ring 9066 fixedly connected with the surface of the protective film 9065. The covering frame 9061 is originally arranged on the surface of the rotor 3, the two contact feet 9063 on the surface of the covering frame 9061 are adsorbed and fixed with the stator core on the two sides of the rotor 3, when the motor operates, the heat generated by the rotor 3 is transmitted to the surface of the covering shell 901 through the covering frame 9061, and the heat is dissipated through the heat dissipation groove. When maintenance is needed, the pushing frame 904 is pulled, the compression rod 903 drives the stretching rod 905 to contract, the folding belt 902 is folded towards the covering shell 901, and the covering frame 9061 is pulled out from the surface of the rotor 3. After the maintenance is completed, the pushing frame 904 is pushed, the stretching rod 905 is stretched out, the folding belt 902 is unfolded, and the covering frame 9061 is re-covered on the surface of the rotor 3. The connecting groove 9062 formed in the surface of the covering frame 9061 can guide the cold air blown by the fan 8054 to the surface of the rotor 3, so that the heat on the surface of the rotor 3 is dissipated, and the operating heat on the surface of the rotor 3 can be greatly reduced. When maintenance is needed, the covering frame 9061 is pulled out from the surface of the rotor 3, and the covering shell 901 is pulled outwards, so that the rotor 3 can be maintained, and the maintenance time of the components in the motor shell 2 is reduced.

[0046] The protective film 9065 has a stretchable property, the surface of the sticking ring 9066 is provided with an adsorption cavity, the sticking ring 9066 is used for adsorbing and fixing with the inner wall of the covering shell 901, and the protective film 9065 is driven by the electric push rod. When protection is needed, the electric push rod is started, the protective film 9065 is pushed to slide outward in the activity cavity 9064 to the two sides of the covering shell 901, the built-in magnet of the sticking ring 9066 on the surface of the protective film 9065 is adsorbed and fixed with the inner wall of the covering shell 901, when protection is needed, the protective film 9065 slides in the activity cavity 9064, the sticking ring 9066 is adsorbed on the inner wall of the covering shell 901, and the heat dissipation hole is blocked; when heat dissipation is needed, the protective film 9065 is retracted into the activity cavity 9064, the heat dissipation hole is opened, and the increase of humidity in the air can be prevented, so that the water vapor in the air enters the inside of the motor shell through the heat dissipation hole on the surface of the covering shell, and the internal components of the permanent magnet motor are prevented from rusting.

[0047] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] Finally, it should be noted that the above-mentioned only constitutes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications, equivalent replacements, improvements and the like of the technical solutions described in the foregoing embodiments can still be made. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A permanent magnet motor facilitating the maintenance of internal components, comprising a base (1), the top of the base (1) is fixedly connected with a motor shell (2), the top of the motor shell (2) is fixedly connected with a machine top cover (4), the inner wall of the motor shell (2) is rotatably connected with a rotor (3) through a rotating shaft, the right side of the inner wall of the motor shell (2) is fixedly connected with a protective shell (6), the inner wall of the motor shell (2) is fixedly connected with a partition plate (5), the end of the rotor (3) away from the inner wall of the motor shell (2) is rotatably connected with the surface of the partition plate (5), the left side of the inner wall of the motor shell (2) is provided with a stretching mechanism (9), characterized in that, Also include: Telescopic mechanism (7), including with the surface fixed connection of the partition (5) edge ring (701), the inner wall of the edge ring (701) both sides are fixedly connected with connecting block (702), the inner wall of the connecting block (702) is slidably connected with telescopic rod (703), the connecting block (702) is used for telescopic rod (703) to slide in the inside telescopic; Fixed assembly (704), including with the fixed connection of the telescopic rod (703) one end clamping disc (7041), the surface of the clamping disc (7041) is fixedly connected with clamping column (7042), the inner wall of the clamping column (7042) both sides are fixedly connected with compression arm (7043), the top of the compression arm (7043) is fixedly connected with plug-in block (7044), the surface of the clamping disc (7041) is provided with clamping mechanism (8), the inside of the clamping disc (7041) is used for accommodating compression arm (7043); The clamping mechanism (8) includes motor cover (801), the right side of the motor cover (801) is provided with clamping groove (803), the clamping groove (803) is slidably connected with the surface of the clamping disc (7041), the clamping column (7042) and the inner wall of the clamping groove (803) are in sliding contact, the left side of the motor cover (801) is fixedly connected with pull bolt (802), the inner wall bottom of the motor cover (801) is fixedly connected with sliding table (804), the top of the sliding table (804) is fixedly connected with connecting frame (806), the pull bolt (802) is used for pushing the motor cover (801); Pushing assembly (805), including with the surface sliding connection of the sliding table (804) telescopic frame (8053), the right side of the telescopic frame (8053) is rotatably connected with the left side of the connecting shell (8052) fixedly connected with the telescopic frame (8053), the end away from the telescopic frame (8053) of the connecting shell (8052) is fixedly connected with push cover (8051), the surface of the connecting shell (8052) is slidably connected with the sliding table (804), the telescopic frame (8053) is inserted and fixed with one end of the connecting frame (806), the connecting frame (806) is used for fixing the telescopic frame (8053).

2. A permanent magnet motor with easy access to internal components as claimed in claim 1 wherein: The surface of the telescopic frame (8053) is provided with plug hole, the left side of the push cover (8051) is fixedly connected with push ring, and the push cover (8051) is used for pushing the fan (8054).

3. A permanent magnet motor with easy access to internal components as recited in claim 1, wherein: The stretching mechanism (9) includes a cladding shell (901), both sides of the cladding shell (901) are rotatably connected with the inner walls of the motor shell (2) through rotating shafts, the right side of the cladding shell (901) is fixedly connected with a folding belt (902), the inner wall of the folding belt (902) is fixedly connected with a stretching rod (905), one end of the stretching rod (905) is slidably connected with the inner wall of the cladding shell (901), the surface of the cladding shell (901) is fixedly connected with a compression rod (903), one end of the compression rod (903) is fixedly connected with one end of the stretching rod (905), the end, away from the cladding shell (901), of the compression rod (903) is fixedly connected with a pushing frame (904), the end, away from the cladding shell (901), of the folding belt (902) is provided with a cladding assembly (906), and the end of the compression rod (903) is used for pushing the stretching rod (905).

4. A permanent magnet motor with easy access to internal components as claimed in claim 3 wherein: The surface of the cladding shell (901) is provided with a heat dissipation groove, the folding belt (902) has a compression reset function, and the stretching rod (905) is used for pulling the folding belt (902) outward.

5. A permanent magnet motor with easy access to internal components as recited in claim 3, wherein: The cladding assembly (906) includes a cladding frame (9061), the cladding frame (9061) is fixedly connected with one end of the folding belt (902), both sides of the cladding frame (9061) are fixedly connected with contact feet (9063), the surface of the cladding frame (9061) is provided with a connecting groove (9062), the inner wall bottom of the cladding frame (9061) is fixedly connected with a movable cavity (9064), both end groove holes of the movable cavity (9064) are slidably connected with protective films (9065), and the surface of the protective film (9065) is fixedly connected with an adhering ring (9066).

6. A permanent magnet motor with easy access to internal components as claimed in claim 5 wherein: The protective film (9065) has a stretchable property, the surface of the adhering ring (9066) is provided with an adsorption cavity, the adhering ring (9066) is used for adsorbing and fixing the inner wall of the cladding shell (901), and the protective film (9065) is used for sliding in the movable cavity (9064).

7. A permanent magnet motor with easy access to internal components as recited in claim 1, wherein: The compression arm (7043) has a telescopic elastic property, the plug-in block (7044) is a circular arc, and the compression arm (7043) is used for pushing the plug-in block (7044).

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