Permanent magnet motor with high dynamic response

Abstract

The invention relates to the technical field of permanent magnet motors, and discloses a high dynamic response permanent magnet motor, which comprises a motor body, the right side of the motor body is provided with a protective cover, the inner wall of the motor body is rotatably connected with a transmission shaft, the circumferential surface of the transmission shaft is fixedly connected with a turntable, and the right side of the turntable is fixedly connected with a conical block. Blades are fixedly connected to the circumferential surface of the conical block; a drying mechanism is arranged on the inner wall of the protective cover, and a replacing mechanism is arranged on the inner wall of the blade. Air entering from the outside can firstly enter the filter disc and is dehumidified and dried by a drying agent in the filter disc; and meanwhile, the filter disc drives the transmission plate on the inner wall to rotate and turns over the drying agent in the filter disc, and therefore the contact area of the drying agent and the air can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet motors, and in particular to a permanent magnet motor with high dynamic response. Background Art

[0002] A permanent magnet motor is a motor that uses permanent magnetic materials as the source of the rotor magnetic field. It is widely used in various fields, including electric vehicles, household appliances, industrial automation, etc. Permanent magnet motors with high dynamic response usually have the ability to start and stop quickly, and are suitable for applications that require rapid changes in speed and load, such as electric vehicles and industrial automation.

[0003] The patent with the announcement number CN217824510U discloses a permanent magnet motor, including a permanent magnet motor rotating shaft, an anti-skid protrusion and a power socket, wherein the No. 1 connecting piece is installed on the top of the No. 1 permanent magnet motor housing, the No. 2 connecting piece is arranged on the outside of the No. 1 connecting piece, the No. 2 connecting piece is arranged on the top of the No. 2 permanent magnet motor housing, the No. 1 connecting piece is provided with a locking nut on the outer side, the locking nut and the bolt match each other, the structure through which the bolt passes has the No. 2 connecting piece, the anti-skid protrusion is installed on the bottom surface of the anti-skid bottom plate, and the patent is provided with a No. 1 connecting piece on the outer side of the No. 1 connecting piece. The No. 1 connector, No. 2 connector, rubber gasket, locking nut and bolt designed on the top and bottom of the No. 1 permanent magnet motor housing and the No. 2 permanent magnet motor housing constitute a disassembly and assembly structure, which makes it easier to disassemble the No. 1 permanent magnet motor housing and the No. 2 permanent magnet motor housing, and is convenient for maintenance personnel to maintain and repair the various components inside the permanent magnet motor. However, when this device is used in a humid environment, humid air from the outside will enter the motor, causing the metal parts inside the motor to become damp and rusty, thereby affecting its service life. Therefore, a permanent magnet motor with high dynamic response is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a permanent magnet motor with high dynamic response in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a permanent magnet motor with high dynamic response, comprising a motor body, a protective cover is installed on the right side of the motor body, a transmission shaft is rotatably connected to the inner wall of the motor body, a turntable is fixedly connected to the circumferential surface of the transmission shaft, a cone block is fixedly connected to the right side of the turntable, and a blade is fixedly connected to the circumferential surface of the cone block; a drying mechanism is arranged on the inner wall of the protective cover, a replacement mechanism is arranged on the inner wall of the blade, and a protective mechanism is arranged on the inner wall of the protective cover; the drying mechanism includes a filter plate, a transmission ... The filter disc is rotatably connected to the circumferential surface of the transmission shaft, the transmission plate is fixedly connected to the inner wall of the filter disc, the block is fixedly connected to the left side of the filter disc, and the slider is slidably connected to the inner wall of the right side of the blade; the block is in contact with the slider, the circumferential surface of the filter disc is in contact with the inner wall of the protective cover, and a spring is provided between the side of the slider away from the cone block and the inner wall of the blade; the circumferential surface of the transmission shaft is fixedly connected to the inner wall of the cone block, and the circumferential surface of the transmission shaft is rotatably connected to the inner wall of the protective cover. When the permanent magnet motor is in use, the transmission shaft The blades will rotate and drive the turntable to rotate, the turntable drives the cone block to rotate, the cone block drives the blades to rotate, the blades will suck the outside air into the protective cover and blow it out from the left side of the protective cover through the through hole, the blown air will contact the heat dissipation fins on the surface of the permanent magnet motor and dissipate the heat, and the outside air will first enter the filter plate and be dehumidified and dried by the desiccant in the filter plate to prevent the moisture in the air from contacting the inner wall of the protective cover and the right side of the permanent magnet motor, thereby causing the metal parts inside to rust. At the same time, the blades will drive the slider to rotate when they rotate slowly, and the slider drives the block The block rotates, and the block drives the filter disc to rotate. The filter disc drives the transmission plate on the inner wall to rotate and flip the desiccant inside the filter disc, thereby increasing the contact area between the desiccant and the air. When the permanent magnet motor operates normally, it drives the blades to rotate rapidly. At this time, the centrifugal force of the blade rotation is large, which causes the slider to overcome the elastic force of the spring and move, so that the slider no longer contacts the block, and thus cannot drive the filter disc to rotate together. Therefore, the permanent magnet motor does not drive the filter disc to rotate when operating at high speed, which reduces the wear of the filter disc and prevents the filter disc from affecting the high-speed operation of the permanent magnet motor.

[0006] Preferably, the changing mechanism includes a moving block, a rotating rod, a transmission rod and a guide block, the moving block is slidably connected to the inner wall of the right side of the transmission shaft, the rotating rod is rotatably connected to the inner wall of the cone block by a torsion spring, the transmission rod is slidably connected to the inner wall of the blade by an elastic member, and the guide block is fixedly connected to an end of the transmission rod away from the transmission shaft; the rotating rod contacts the inner wall of the transmission shaft, the rotating rod contacts the inner wall of the blade, and a spring 2 is provided between the moving block and the inner wall of the transmission shaft; the changing mechanism also includes a limiting rod, a rotating plate, a push rod and a limiting plate, the limiting rod is fixedly connected to the inner wall of the transmission rod, the rotating plate is rotatably connected to the inner wall of the protective cover by a torsion spring, the limiting plate is fixedly connected to the inner wall of the protective cover, and the push rod is slidably connected to the inner wall of the limiting plate; the circumferential surface of the limiting rod contacts the inner wall of the rotating rod, and the rotating rod and the transmission rod The inner wall is in contact with the guide block, which is close to the transmission rod and contacts the blades. The desiccant in the filter disc needs to be replaced at fixed intervals. At this time, the right side of the transmission shaft is inserted through a tool, the tool enters the transmission shaft and pushes the moving block to move, and the moving block pushes the rotating rod to rotate, and the rotating rod leaves the limiting rod in the transmission rod. At this time, the limiting rod in the transmission rod is no longer limited by the rotating rod, and the magnet in the moving block pushes the transmission rod and the magnet inside it to move through repulsion, so that the transmission rod drives the guide block to extend the blade. At this time, the transmission shaft is rotated, and the transmission shaft drives the blade to rotate. The blade drives the guide block to rotate through the transmission rod. The guide block pushes the push rod to move through the inclined surface, and the push rod pushes the rotating plate to open through the inclined surface. At this time, the filter disc will also rotate with the transmission shaft, and the notch of the filter disc is overlapped with the opened rotating plate, so that the desiccant inside the filter disc can be discharged and desiccant can be added again.

[0007] Preferably, the protective mechanism includes an inclined block, an elastic soft rod and a telescopic rod, the elastic soft rod is slidably connected to the inner wall of the protective cover, the inclined block is fixedly connected to one end of the elastic soft rod, and the telescopic rod is fixedly connected to the other end of the elastic soft rod; the protective mechanism also includes an arc plate, an arc block and a filter plate, the arc plate is fixedly connected to the surface of the telescopic end of the telescopic rod, the filter plate is installed on the inner wall of the protective cover, and the arc block is fixedly connected to the left side of the filter plate; the arc block is in contact with the arc plate, the surface of the telescopic end of the telescopic rod is in contact with the inner wall of the protective cover, the inclined block is in contact with the guide block, and the The fixed end of the telescopic rod is fixedly connected to the inner wall of the protective cover. When outside air enters the protective cover, the filter plate on the inner wall of the protective cover will filter the dust in the outside air. When the desiccant is replaced, the worker can scrape off the dust accumulated on the surface of the filter plate, and when the guide block moves, it will drive the inclined block to move upward. The inclined block drives the telescopic rod to move through the elastic soft rod. The movement of the telescopic rod will drive the arc plate to move. When the arc plate moves, it will contact the arc block on the filter plate, causing the arc block to be hit and vibrate. The vibration can cause the dust in the pores of the filter plate to fall off, further improving the cleaning effect of the dust on the surface of the filter plate.

[0008] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0009] 1. The high dynamic response permanent magnet motor, through the coordinated operation of the motor body, protective cover, transmission shaft, turntable, cone block, blades, filter disc, transmission plate, block, slider, and replacement mechanism, allows the air entering from the outside to first enter the filter disc and be dehumidified and dried by the desiccant in the filter disc to prevent moisture in the air from contacting the inner wall of the protective cover and the right side of the permanent magnet motor, thereby causing rust on the metal parts inside. At the same time, the filter disc drives the transmission plate on the inner wall to rotate and flip the desiccant inside the filter disc, thereby increasing the contact area between the desiccant and the air.

[0010] 2. The high dynamic response permanent magnet motor operates in coordination with the moving block, rotating rod, transmission rod, guide block, limit rod, rotating plate, push rod and limit plate. The desiccant in the filter disc needs to be replaced at fixed intervals so that the notch of the filter disc coincides with the opened rotating plate, thereby allowing the desiccant inside the filter disc to be discharged and re-added.

[0011] 3. The permanent magnet motor with high dynamic response works through the coordination of the inclined block, elastic soft rod, telescopic rod, arc plate, arc block and filter plate. When the outside air enters the protective cover, the filter plate on the inner wall of the protective cover will filter the dust in the outside air. At the same time, when the arc plate moves, it will contact the arc block on the filter plate, causing the arc block to be hit and vibrate. The vibration can cause the dust in the pores of the filter plate to fall off, further improving the cleaning effect of the dust on the surface of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 A half-section view of the motor body structure of the present invention;

[0014] Figure 3 A half-section diagram of the protective cover structure of the present invention;

[0015] Figure 4 A half-section diagram of the turntable structure of the present invention;

[0016] Figure 5 A half-section view of the filter disc structure of the present invention;

[0017] Figure 6 For the present invention Figure 5 A magnified view of the structure at center;

[0018] Figure 7 A half-section diagram of the blade structure of the present invention;

[0019] Figure 8 For the present invention Figure 7 A magnified view of the structure at B in the middle;

[0020] Fig. 9 For the present invention Figure 7 A magnified view of the structure at C in the middle;

[0021] Fig.10 This is a schematic diagram of the filter plate structure of the present invention;

[0022] Fig.11 For the present invention Fig.10 Enlarged view of the structure at point D in the middle.

[0023] In the figure: 1. motor body; 2. protective cover; 3. transmission shaft; 4. turntable; 5. cone block; 6. blades; 7. drying mechanism; 71. filter plate; 72. transmission plate; 73. block; 74. slider; 8. replacement mechanism; 81. moving block; 82. rotating rod; 83. transmission rod; 84. guide block; 85. limit rod; 86. rotating plate; 87. push rod; 88. limit plate; 9. protective mechanism; 91. oblique block; 92. elastic soft rod; 93. telescopic rod; 94. arc plate; 95. arc block; 96. filter plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 11An embodiment of the present invention is: a permanent magnet motor with high dynamic response, comprising a motor body 1, a protective cover 2 is installed on the right side of the motor body 1, a transmission shaft 3 is rotatably connected to the inner wall of the motor body 1, a turntable 4 is fixedly connected to the circumferential surface of the transmission shaft 3, a cone block 5 is fixedly connected to the right side of the turntable 4, and a blade 6 is fixedly connected to the circumferential surface of the cone block 5; a drying mechanism 7 is arranged on the inner wall of the protective cover 2, a replacement mechanism 8 is arranged on the inner wall of the blade 6, and a protective mechanism 9 is arranged on the inner wall of the protective cover 2; the drying mechanism 7 includes a filter plate 71, a transmission plate 72, a stopper 73 and a slider 74, the filter plate 71 rotates The transmission plate 72 is movably connected to the circumferential surface of the transmission shaft 3, the transmission plate 72 is fixedly connected to the inner wall of the filter disc 71, the stopper 73 is fixedly connected to the left side of the filter disc 71, and the slider 74 is slidably connected to the inner wall of the right side of the blade 6. When the permanent magnet motor is in use, the transmission shaft 3 will rotate and drive the turntable 4 to rotate, the turntable 4 drives the cone block 5 to rotate, and the cone block 5 drives the blade 6 to rotate. The blade 6 will suck the outside air into the protective cover 2 and blow it out from the left side of the protective cover 2 through the through hole. The blown air will contact the heat dissipation fins on the surface of the permanent magnet motor and dissipate the heat, while the outside air will first enter the filter disc 71 and be The desiccant in the filter disc 71 is dehumidified and dried to prevent moisture in the air from contacting the inner wall of the protective cover 2 and the right side of the permanent magnet motor, thereby causing the metal parts inside to rust; the block 73 is in contact with the slider 74, the circumferential surface of the filter disc 71 is in contact with the inner wall of the protective cover 2, and a spring 1 is provided between the side of the slider 74 away from the cone block 5 and the inner wall of the blade 6; the circumferential surface of the transmission shaft 3 is fixedly connected to the inner wall of the cone block 5, and the circumferential surface of the transmission shaft 3 is rotatably connected to the inner wall of the protective cover 2. When the blade 6 rotates slowly, it will drive the slider 74 to rotate, the slider 74 drives the block 73 to rotate, and the block 73 drives the filter disc 71 rotates, the filter disc 71 drives the transmission plate 72 on the inner wall to rotate and flip the desiccant inside the filter disc 71, thereby increasing the contact area between the desiccant and the air. When the permanent magnet motor operates normally, it drives the blade 6 to rotate rapidly. At this time, the centrifugal force of the rotation of the blade 6 is large, which causes the slider 74 to overcome the elastic force of the spring and move, so that the slider 74 no longer contacts the stopper 73, and thus cannot drive the filter disc 71 to rotate together. Therefore, the permanent magnet motor does not drive the filter disc 71 to rotate when operating at high speed, thereby reducing the wear of the filter disc 71 and preventing the filter disc 71 from affecting the high-speed operation of the permanent magnet motor.

[0026] Working principle: When the permanent magnet motor is in use, the transmission shaft 3 will rotate and drive the turntable 4 to rotate, the turntable 4 drives the cone block 5 to rotate, the cone block 5 drives the blade 6 to rotate, the blade 6 will suck the outside air into the protective cover 2, and blow it out from the left side of the protective cover 2 through the through hole, the blown air will contact the heat dissipation fins on the surface of the permanent magnet motor and dissipate the heat, and the outside air will first enter the filter plate 71, and be dehumidified and dried by the desiccant in the filter plate 71 to prevent the moisture in the air from contacting the inner wall of the protective cover 2 and the right side of the permanent magnet motor, thereby causing the metal parts inside to rust, and at the same time, the blade 6 will drive the slider 74 to rotate when it rotates slowly, and the slider 7 4 drives the stopper 73 to rotate, the stopper 73 drives the filter disc 71 to rotate, the filter disc 71 drives the transmission plate 72 on the inner wall to rotate and flip the desiccant inside the filter disc 71, thereby increasing the contact area between the desiccant and the air. When the permanent magnet motor operates normally, it drives the blade 6 to rotate quickly. At this time, the centrifugal force of the blade 6 is large, which causes the slider 74 to overcome the elastic force of the spring and move, so that the slider 74 no longer contacts the stopper 73, and thus cannot drive the filter disc 71 to rotate together. Therefore, the permanent magnet motor does not drive the filter disc 71 to rotate when it rotates at a high speed, thereby reducing the wear of the filter disc 71 and preventing the filter disc 71 from affecting the high-speed operation of the permanent magnet motor.

[0027] See also Figure 1-Figure 11On the basis of the above embodiment, in another embodiment of the present invention, the replacement mechanism 8 includes a moving block 81, a rotating rod 82, a transmission rod 83 and a guide block 84, the moving block 81 is slidably connected to the inner wall of the right side of the transmission shaft 3, the rotating rod 82 is rotatably connected to the inner wall of the cone block 5 through a torsion spring, the transmission rod 83 is slidably connected to the inner wall of the blade 6 through an elastic member, and the guide block 84 is fixedly connected to the end of the transmission rod 83 away from the transmission shaft 3; the rotating rod 82 contacts the inner wall of the transmission shaft 3, and the rotating rod 82 contacts the inner wall of the blade 6 The replacement mechanism 8 further comprises a limit rod 85, a rotating plate 86, a push rod 87 and a limit plate 88. The limit rod 85 is fixedly connected to the inner wall of the transmission rod 83. The desiccant in the filter disc 71 needs to be replaced at regular intervals. At this time, a tool is inserted into the right side of the transmission shaft 3. The tool enters the transmission shaft 3 and pushes the moving block 81 to move. The moving block 81 pushes the rotating rod 82 to rotate. The rotating rod 82 leaves the limit rod 85 in the transmission rod 83. When the limit rod 85 in the transmission rod 83 is no longer limited by the rotating rod 82, the magnet in the moving block 81 will push the transmission rod 83 and the magnet inside it to move through the repulsive force, the rotating plate 86 is connected to the inner wall of the protective cover 2 through the torsion spring, the limit plate 88 is fixedly connected to the inner wall of the protective cover 2, and the push rod 87 is slidably connected to the inner wall of the limit plate 88; the circumferential surface of the limit rod 85 contacts the inner wall of the rotating rod 82, the rotating rod 82 contacts the inner wall of the transmission rod 83, and the side of the guide block 84 close to the transmission rod 83 contacts the blade 6 The transmission shaft 3 is then rotated, and the transmission shaft 3 drives the blade 6 to rotate. The blade 6 drives the guide block 84 to rotate through the transmission shaft 83. The guide block 84 pushes the push rod 87 to move through the inclined surface. The push rod 87 pushes the rotating plate 86 to open through the inclined surface. At this time, the filter disc 71 will also rotate with the transmission shaft 3, and the notch of the filter disc 71 will overlap with the opened rotating plate 86, so that the desiccant inside the filter disc 71 can be discharged and re-added with desiccant.

[0028] The protective mechanism 9 includes an inclined block 91, an elastic soft rod 92 and a telescopic rod 93. The elastic soft rod 92 is slidably connected to the inner wall of the protective cover 2, the inclined block 91 is fixedly connected to one end of the elastic soft rod 92, and the telescopic rod 93 is fixedly connected to the other end of the elastic soft rod 92. When outside air enters the protective cover 2, the filter plate 96 on the inner wall of the protective cover 2 will filter the dust in the outside air. When the desiccant is replaced, the worker can scrape off the dust accumulated on the surface of the filter plate 96; the protective mechanism 9 also includes an arc plate 94, an arc block 95 and a filter plate 96. The arc plate 94 is fixedly connected to the surface of the telescopic end of the telescopic rod 93, the filter plate 96 is installed on the inner wall of the protective cover 2, and the arc block 9 5 is fixedly connected to the left side of the filter plate 96; the arc block 95 contacts the arc plate 94, the surface of the telescopic end of the telescopic rod 93 contacts the inner wall of the protective cover 2, the inclined block 91 contacts the guide block 84, and the fixed end of the telescopic rod 93 is fixedly connected to the inner wall of the protective cover 2. When the guide block 84 moves, the inclined block 91 will be driven to move upward, and the inclined block 91 will drive the telescopic rod 93 to move through the elastic soft rod 92. The movement of the telescopic rod 93 will drive the arc plate 94 to move. When the arc plate 94 moves, it will contact the arc block 95 on the filter plate 96, so that the arc block 95 is hit and vibrates. The vibration can cause the dust in the pores of the filter plate 96 to fall off, further improving the cleaning effect of the dust on the surface of the filter plate 96.

[0029] Working principle: the desiccant in the filter disc 71 needs to be replaced at fixed intervals. At this time, a tool is inserted into the right side of the transmission shaft 3, the tool enters the transmission shaft 3 and pushes the moving block 81 to move, and the moving block 81 pushes the rotating rod 82 to rotate, and the rotating rod 82 leaves the limiting rod 85 in the transmission rod 83. At this time, the limiting rod 85 in the transmission rod 83 is no longer limited by the rotating rod 82, and the magnet in the moving block 81 will push the transmission rod 83 and the magnet inside it to move through repulsion, so that the transmission rod 83 drives the guide block 84 to extend the blade 6. At this time, the transmission shaft 3 is rotated, and the transmission shaft 3 drives the blade 6 to rotate. The blade 6 drives the guide block 84 to rotate through the transmission rod 83. The guide block 84 pushes the push rod 87 to move through the inclined surface, and the push rod 87 pushes the rotating plate 86 to open through the inclined surface. At this time, the filter disc 71 will also rotate with the transmission shaft 3, and let the notch of the filter disc 71 coincide with the opened rotating plate 86, so that the desiccant inside the filter disc 71 can be discharged and the desiccant can be added again.

[0030] When outside air enters the protective cover 2, the filter plate 96 on the inner wall of the protective cover 2 will filter the dust in the outside air. When the desiccant is replaced, the worker can scrape off the dust accumulated on the surface of the filter plate 96, and when the guide block 84 moves, the inclined block 91 will be driven to move upward, and the inclined block 91 will drive the telescopic rod 93 to move through the elastic soft rod 92. The movement of the telescopic rod 93 will drive the arc plate 94 to move. When the arc plate 94 moves, it will contact the arc block 95 on the filter plate 96, so that the arc block 95 is hit and vibrates. The vibration can cause the dust in the pores of the filter plate 96 to fall off, further improving the cleaning effect of the dust on the surface of the filter plate 96.

[0031] The present invention provides a permanent magnet motor with high dynamic response. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A permanent magnet motor with high dynamic response, comprising a motor body (1), characterized in that: A protective cover (2) is installed on the right side of the motor body (1); a transmission shaft (3) is rotatably connected to the inner wall of the motor body (1); a rotating disk (4) is fixedly connected to the circumferential surface of the transmission shaft (3); a cone block (5) is fixedly connected to the right side of the rotating disk (4); and a blade (6) is fixedly connected to the circumferential surface of the cone block (5); The inner wall of the protective cover (2) is provided with a drying mechanism (7), the inner wall of the blade (6) is provided with a replacement mechanism (8), and the inner wall of the protective cover (2) is provided with a protective mechanism (9); The drying mechanism (7) comprises a filter disc (71), a transmission plate (72), a stopper (73) and a slider (74); the filter disc (71) is rotatably connected to the circumferential surface of the transmission shaft (3); the transmission plate (72) is fixedly connected to the inner wall of the filter disc (71); the stopper (73) is fixedly connected to the left side of the filter disc (71); and the slider (74) is slidably connected to the inner wall of the right side of the blade (6).

2. A permanent magnet motor with high dynamic response according to claim 1, characterized in that: The stopper (73) contacts the slider (74), the circumferential surface of the filter disc (71) contacts the inner wall of the protective cover (2), and a spring is provided between the side of the slider (74) away from the cone block (5) and the inner wall of the blade (6).

3. A permanent magnet motor with high dynamic response according to claim 2, characterized in that: The circumferential surface of the transmission shaft (3) is fixedly connected to the inner wall of the cone block (5), and the circumferential surface of the transmission shaft (3) is rotatably connected to the inner wall of the protective cover (2).

4. A permanent magnet motor with high dynamic response according to claim 3, characterized in that: The replacement mechanism (8) comprises a moving block (81), a rotating rod (82), a transmission rod (83) and a guide block (84); the moving block (81) is slidably connected to the inner wall on the right side of the transmission shaft (3); the rotating rod (82) is rotationally connected to the inner wall of the cone block (5) via a torsion spring; the transmission rod (83) is slidably connected to the inner wall of the blade (6) via an elastic member; and the guide block (84) is fixedly connected to one end of the transmission rod (83) away from the transmission shaft (3).

5. A permanent magnet motor with high dynamic response according to claim 4, characterized in that: The rotating rod (82) contacts the inner wall of the transmission shaft (3), the rotating rod (82) contacts the inner wall of the blade (6), and a second spring is provided between the moving block (81) and the inner wall of the transmission shaft (3).

6. A permanent magnet motor with high dynamic response according to claim 5, characterized in that: The replacement mechanism (8) further comprises a limit rod (85), a rotating plate (86), a push rod (87) and a limit plate (88); the limit rod (85) is fixedly connected to the inner wall of the transmission rod (83); the rotating plate (86) is rotationally connected to the inner wall of the protective cover (2) via a torsion spring; the limit plate (88) is fixedly connected to the inner wall of the protective cover (2); and the push rod (87) is slidably connected to the inner wall of the limit plate (88).

7. A permanent magnet motor with high dynamic response according to claim 6, characterized in that: The circumferential surface of the limiting rod (85) contacts the inner wall of the rotating rod (82), the rotating rod (82) contacts the inner wall of the transmission rod (83), and the side of the guide block (84) close to the transmission rod (83) contacts the blade (6).

8. A permanent magnet motor with high dynamic response according to claim 7, characterized in that: The protective mechanism (9) comprises an inclined block (91), an elastic soft rod (92) and a telescopic rod (93); the elastic soft rod (92) is slidably connected to the inner wall of the protective cover (2); the inclined block (91) is fixedly connected to one end of the elastic soft rod (92); and the telescopic rod (93) is fixedly connected to the other end of the elastic soft rod (92).

9. A permanent magnet motor with high dynamic response according to claim 8, characterized in that: The protective mechanism (9) further comprises an arc plate (94), an arc block (95) and a filter plate (96); the arc plate (94) is fixedly connected to the surface of the telescopic end of the telescopic rod (93); the filter plate (96) is mounted on the inner wall of the protective cover (2); and the arc block (95) is fixedly connected to the left side of the filter plate (96).

10. A permanent magnet motor with high dynamic response according to claim 9, characterized in that: The arc block (95) contacts the arc plate (94), the surface of the telescopic end of the telescopic rod (93) contacts the inner wall of the protective cover (2), the inclined block (91) contacts the guide block (84), and the fixed end of the telescopic rod (93) is fixedly connected to the inner wall of the protective cover (2).

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