CN117914047B - Permanent magnet direct-drive high-power electric roller - Google Patents

Abstract

The invention discloses a permanent magnet direct-drive high-power electric roller, which relates to the technical field of permanent magnet direct-drive electric rollers and comprises a driving device, a fixing part and a rotating roller, wherein an inner stator is arranged in the rotating roller, and a plurality of fixing coils are fixedly arranged on the outer surface of the inner stator. According to the invention, by arranging the coil adjusting mechanism, when the power of the permanent magnet direct-drive electric roller needs to be increased, a worker can put the movable coil into the inner stator from the guide groove, the movable coil and the short rack are installed, then the handle is pulled, the movable coil is installed into the installation groove by utilizing the cooperation among the rack ring, the gear and the short rack, and the movable coil is connected into a circuit by utilizing the cooperation among the plug and the socket, so that the magnetic field intensity generated by the inner stator is increased, the power of the permanent magnet direct-drive electric roller is increased, the current is shared by the movable coil, the original fixed coil can be prevented from being damaged due to overlarge power, and the effect of increasing the power is realized.

Description

Permanent magnet direct-drive high-power electric roller

Technical Field

The invention relates to the technical field of permanent magnet direct-drive motorized pulley, in particular to a permanent magnet direct-drive high-power motorized pulley.

Background

The permanent magnet electric roller is also called a magnetic pulley or a dry-type large-block magnetic separator. The permanent magnet electric roller can be used for selecting iron in industries of cement, magnetic separation, mine, steel, chemical industry, refractory materials, garbage treatment and the like, can be matched with a fixed belt conveyor to replace a driving wheel, and also can be matched with a special belt conveyor, wherein an internal stator is a static part of the electric roller or a generator, the main function of the stator is to generate a rotating magnetic field, and the main function of a rotor is to be cut by magnetic lines in the rotating magnetic field so as to generate output current.

However, in the prior art, the number of coils included in the stator inside the permanent magnet electric roller is fixed, so that the size of a magnetic field which can be generated is limited, when the output power of the permanent magnet electric roller needs to be increased, the current in the coils is increased, but the coils are easily damaged by the mode, the production cost is increased, and the permanent magnet direct-drive high-power electric roller is provided for solving the problems.

Disclosure of Invention

The invention aims to provide a permanent magnet direct-drive high-power motorized pulley, which aims to solve the problems that the number of coils contained in a stator inside the permanent magnet motorized pulley is fixed, so that the size of a magnetic field which can be generated is limited, and when the output power of the permanent magnet motorized pulley needs to be increased, the current in the coils is increased, but the coils are easily damaged by the mode, and the production cost is increased.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high-power electronic cylinder of permanent magnetism direct drive, includes drive arrangement, fixed part and rotation cylinder, the inside of rotation cylinder is provided with interior stator, the surface fixed mounting of interior stator has a plurality of fixed coils, a plurality of mounting grooves have been seted up to the surface of interior stator, the inner wall of mounting groove is provided with the socket, the one end of interior stator is provided with coil adjustment mechanism, coil adjustment mechanism includes the rack ring, the one end fixed mounting of rack ring has the handle, the inner wall meshing of rack ring has a plurality of gears, the other end rotation of rack ring is connected with solid fixed ring, a plurality of runner of No. one has been seted up to solid fixed ring's one end, the inner wall sliding connection of runner of No. one has a plurality of short racks, a plurality of the quantity of short racks is the same with a plurality of the quantity of gears, the short rack end meshes with the gear mutually, the one end of short racks is provided with movable coil, the one end of movable coil is provided with the plug, the one end of plug is pegged graft with the inner wall of socket, the inside of stator is provided with the circuit that is used for fixed coil and movable coil power supply.

Preferably, the constant head tank has been seted up to the one end of short rack, two No. two spouts have been run through to the inner wall of constant head tank, no. two inner wall sliding connection of spout has the slip post, the one end fixedly connected with stopper of slip post, the surface of slip post is provided with the spring, the other end fixed mounting of movable coil has the locating piece, the one end fixedly connected with fixed column of locating piece, the surface sliding connection of fixed column has the slip ring, the one end fixedly connected with semicircle fixed block of fixed column, the one end of fixed column and the inner wall sliding connection of constant head tank, the maximum diameter of slip ring is the same with the maximum diameter of semicircle fixed block.

Preferably, the other end fixed mounting of interior stator has the deflector, a plurality of guide slots have been seted up in the one end penetration of deflector, the other end fixed mounting of deflector has a plurality of connecting rods, the one end of connecting rod and the fixed surface fixed mounting of solid fixed ring, the fixed plate has been cup jointed to the one end fixed of interior stator, the spacing groove has been seted up in the one end penetration of fixed plate, the one end and the inner wall sliding connection of spacing groove of handle, the other end sliding connection of plug has the slider, the one end fixedly connected with link of slider.

Preferably, the output end of the driving device is in transmission connection with one end of the rotary roller, a plurality of permanent magnets are fixedly arranged on the inner wall of the rotary roller, the inner wall of the rotary roller is in rotary connection with the outer surface of the guide plate, and the outer surface of the fixing plate is in rotary connection with the inner wall of the rotary roller.

Preferably, the number of the plurality of fixed coils is the same as the number of the plurality of mounting grooves, and the plurality of fixed coils and the plurality of mounting grooves are staggered on the outer surface of the inner stator.

Preferably, the number of the plurality of movable coils is the same as the number of the plurality of mounting grooves, the size of the plurality of movable coils is matched with the size of the mounting grooves, the number of the plurality of movable coils is the same as the number of the plurality of guide grooves, and the size of the movable coils is matched with the size of the guide grooves.

Preferably, a plurality of L-shaped fixing columns are fixedly arranged on the outer surface of the inner stator, the number of the L-shaped fixing columns is the same as that of the gears, and one end of each L-shaped fixing column is rotationally connected with one end of each gear.

Preferably, one end of the spring is fixedly connected with the outer surface of the sliding column, and the other end of the spring is fixedly connected with the inner wall of the second sliding groove.

Preferably, the outer surface of the inner stator is fixedly mounted with the inner wall of the fixing ring.

Preferably, inclined planes are arranged at two ends of the sliding ring.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, by arranging the coil adjusting mechanism, when the power of the permanent magnet direct-drive electric roller needs to be increased, a worker can put the movable coil into the inner stator from the guide groove, the movable coil and the short rack are installed, then the handle is pulled, the movable coil is installed into the installation groove by utilizing the cooperation among the rack ring, the gear and the short rack, and the movable coil is connected into a circuit by utilizing the cooperation among the plug and the socket, so that the magnetic field intensity generated by the inner stator is increased, the power of the permanent magnet direct-drive electric roller is increased, the current is shared by the movable coil, the original fixed coil can not be damaged due to overlarge power, and the effect of increasing the power is realized.

2. According to the invention, the positioning block is arranged at one end of the movable coil, and the sliding column and the limiting block are arranged in the short rack, so that the movable coil can be quickly disassembled and assembled by utilizing the matching among the sliding ring, the semicircular fixed block, the sliding column and the limiting block on the positioning block, and the convenience of equipment is improved.

3. According to the invention, the guide plate is arranged, and the guide groove is formed in the guide plate, so that a worker can conveniently position the movable coil when installing the movable coil, dislocation of the movable coil when moving along with the short rack is prevented, and the stability of the device is improved.

Drawings

FIG. 1 is a schematic perspective view of a permanent magnet direct drive high power motorized pulley according to the present invention;

FIG. 2 is a front view of a permanent magnet direct drive high power motorized pulley of the present invention;

FIG. 3 is a schematic diagram showing the disassembly of a part of the structure of a permanent magnet direct-drive high-power motorized pulley according to the present invention;

fig. 4 is a schematic perspective view of a part of the structure of a permanent magnet direct-drive high-power motorized pulley according to the present invention;

FIG. 5 is a right side view of a part of the structure of a permanent magnet direct drive high power motorized pulley according to the present invention;

FIG. 6 is a schematic diagram of a coil adjustment mechanism of a permanent magnet direct drive high power motorized pulley according to the present invention;

FIG. 7 is a front view of the inner stator of a permanent magnet direct drive high power motorized pulley of the present invention;

FIG. 8 is a schematic diagram of a part of the structure of a movable coil of a permanent magnet direct-drive high-power motorized pulley according to the present invention;

FIG. 9 is a partial cross-sectional view of a plug of a permanent magnet direct drive high power motorized pulley according to the present invention;

fig. 10 is a schematic cross-sectional view of a part of the structure of a permanent magnet direct-drive high-power motorized pulley according to the present invention.

In the figure: 1. a driving device; 2. a fixing member; 3. rotating the drum; 301. a permanent magnet; 4. a fixing plate; 401. a limit groove; 5. an inner stator; 501. fixing the coil; 502. a mounting groove; 503. a socket; 504. an L-shaped fixing column; 6. a coil adjusting mechanism; 601. a rack ring; 602. a handle; 603. a gear; 604. a fixing ring; 605. a first chute; 606. a short rack; 607. a positioning groove; 608. a second chute; 609. a sliding column; 610. a limiting block; 611. a spring; 7. a movable coil; 8. a plug; 801. a slide block; 802. hanging rings; 9. a positioning block; 901. fixing the column; 902. a slip ring; 903. a semicircular fixed block; 10. a guide plate; 1001. a guide groove; 11. and (5) connecting a rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one: referring to fig. 1-10: the permanent magnet direct-drive high-power electric roller comprises a driving device 1, a fixing part 2 and a rotating roller 3, wherein an inner stator 5 is arranged in the rotating roller 3, a plurality of fixing coils 501 are fixedly arranged on the outer surface of the inner stator 5, a plurality of mounting grooves 502 are formed in the outer surface of the inner stator 5, a socket 503 is formed in the inner wall of the mounting groove 502, a coil adjusting mechanism 6 is arranged at one end of the inner stator 5, the coil adjusting mechanism 6 comprises a rack ring 601, a handle 602 is fixedly arranged at one end of the rack ring 601, a plurality of gears 603 are meshed with the inner wall of the rack ring 601, a fixing ring 604 is rotatably connected with the other end of the rack ring 601, a plurality of first sliding grooves 605 are formed at one end of the fixing ring 604, a plurality of short racks 606 are slidably connected with the inner wall of the first sliding grooves 605, the number of the short racks 606 is the same as that of a plurality of gears 603, the short racks 606 are meshed with the gears 603, one end of the short tooth strip 606 is provided with a movable coil 7, one end of the movable coil 7 is provided with a plug 8, one end of the plug 8 is spliced with the inner wall of the socket 503, a circuit for supplying power to the fixed coil 501 and the movable coil 7 is arranged inside the inner stator 5, the output end of the driving device 1 is in transmission connection with one end of the rotating drum 3, the inner wall of the rotating drum 3 is fixedly provided with a plurality of permanent magnets 301, the inner wall of the rotating drum 3 is in rotation connection with the outer surface of the guide plate 10, the outer surface of the fixed plate 4 is in rotation connection with the inner wall of the rotating drum 3, the plurality of fixed coils 501 are the same as the plurality of mounting grooves 502, the plurality of fixed coils 501 and the plurality of mounting grooves 502 are staggered on the outer surface of the inner stator 5, the outer surface of the inner stator 5 is fixedly provided with a plurality of L-shaped fixed columns 504, the number of the L-shaped fixed columns 504 is the same as the number of the gears 603, one end of the L-shaped fixing column 504 is rotatably connected with one end of the gear 603, and the outer surface of the inner stator 5 is fixedly installed with the inner wall of the fixing ring 604.

In this embodiment, when the power of the permanent magnet direct-drive motorized pulley needs to be increased, a worker can insert a plurality of movable coils 7 into the interior of the permanent magnet direct-drive motorized pulley from the guide plate 10, then after the installation of the plurality of movable coils 7 and the short racks 606 is completed, the worker pulls the handle 602 to slide in the limiting groove 401, the handle 602 drives the rack ring 601 to rotate around the center of the circle, the rack ring 601 drives the plurality of gears 603 to rotate after rotating, the plurality of gears 603 respectively drive the short racks 606 meshed with the gears to slide in the first sliding groove 605, the short racks 606 can slide along the interior of the first sliding groove 605 but cannot be separated from the first sliding groove 605, the short racks 606 drive the movable coils 7 to move towards the inner stator 5 when moving, the movable coil 7 is gradually inserted into the mounting groove 502 in the moving process, meanwhile, the plug 8 is inserted into the socket 503, the plug 8 enables the movable coil 7 to be connected into an internal circuit of the inner stator 5, the movable coil 7 is electrified, a magnetic field is generated after the movable coil 7 is electrified, the magnetic field is overlapped with the magnetic field generated by the original fixed coil 501, so that the total magnetic field strength is improved, when the driving device 1 drives the rotating drum 3 to rotate, the permanent magnet 301 inside the rotating drum 3 can continuously cut the magnetic induction lines generated by the fixed coil 501 and the movable coil 7 and generate current, so that the power of the permanent magnet direct-drive electric drum is increased, and the embodiment can protect the original fixed coil 501 from being damaged due to overload while improving the power of the permanent magnet direct-drive electric drum.

Embodiment two: as shown in fig. 5, fig. 6 and fig. 10, a positioning groove 607 is formed at one end of the short rack 606, two second slide grooves 608 are formed in the inner wall of the positioning groove 607 in a penetrating manner, a sliding column 609 is slidably connected to the inner wall of the second slide groove 608, a limiting block 610 is fixedly connected to one end of the sliding column 609, a spring 611 is arranged on the outer surface of the sliding column 609, a positioning block 9 is fixedly arranged at the other end of the movable coil 7, a fixed column 901 is fixedly connected to one end of the positioning block 9, a sliding ring 902 is slidably connected to the outer surface of the fixed column 901, a semicircular fixing block 903 is fixedly connected to one end of the fixed column 901, one end of the fixed column 901 is slidably connected to the inner wall of the positioning groove 607, the maximum diameter of the sliding ring 902 is identical to the maximum diameter of the semicircular fixing block 903, one end of the spring 611 is fixedly connected to the outer surface of the sliding column 609, the other end of the spring 611 is fixedly connected to the inner wall of the second slide groove 608, and inclined surfaces are arranged at two ends of the sliding ring 902.

In this embodiment, when the movable coil 7 is mounted on the short rack 606, the fixed column 901 on the positioning block 9 continuously enters the positioning groove 607 along with the movement of the movable coil 7, the semicircular surface of the semicircular fixed block 903 is firstly contacted with the stopper 610 and pushed to slide in the second chute 608, the stopper 610 is pushed to move and squeeze the spring 611, the spring 611 generates elastic force after being squeezed, after the semicircular surface of the semicircular fixed block 903 is separated from the stopper 610, the spring 611 releases the elastic force to enable the stopper 610 and the sliding column 609 to reversely move, at this moment, the stopper 610 is clamped with the non-semicircular surface of the semicircular fixed block 903, thereby completing the mounting of the positioning block 9 and the movable coil 7, when the movable coil 7 needs to be dismounted, the worker pushes the movable coil 7 by using the push rod hanging ring 802 with a hook, at this moment, the fixed column 901 moves further into the positioning groove, at this moment, the stopper 610 contacts with the inclined surface of one side of the sliding ring 902, when the sliding column 901 slides to the top end of the fixed column 611, the stopper 610 moves in the second chute 608, after the semicircular surface of the semicircular fixed block 903 is separated from the stopper 903, the inclined surface of the sliding block 903 is pulled out of the other side of the semicircular block 903, and the semicircular ring 902 is separated from the fixed ring 902 again, and the semicircular ring 610 is hooked with the same inclined surface after the sliding block 902, and the sliding block 902 is separated from the fixed ring 902, and the fixed ring 902 is contacted with the sliding surface by the sliding ring 902 again, after that, the staff can finish the disassembly by continuously pulling out the movable coil 7 outwards, and the embodiment can realize the quick disassembly and assembly of the movable coil 7, thereby improving the convenience of the equipment.

Embodiment III: according to the embodiment shown in fig. 1, fig. 3, fig. 4, fig. 5, fig. 7, fig. 8 and fig. 10, the other end of the inner stator 5 is fixedly provided with a guide plate 10, one end of the guide plate 10 is provided with a plurality of guide grooves 1001 in a penetrating manner, the other end of the guide plate 10 is fixedly provided with a plurality of connecting rods 11, one end of each connecting rod 11 is fixedly arranged on the outer surface of the fixing ring 604, one end of the inner stator 5 is fixedly sleeved with the fixing plate 4, one end of each fixing plate 4 is provided with a limiting groove 401 in a penetrating manner, one end of each handle 602 is slidably connected with the inner wall of the limiting groove 401, the other end of each plug 8 is slidably connected with a sliding block 801, one end of each sliding block 801 is fixedly connected with a hanging ring 802, the number of the plurality of movable coils 7 is the same as the number of the plurality of mounting grooves 502, the number of the plurality of the movable coils 7 is the same as the number of the plurality of the guide grooves 1001, and the size of the movable coils 7 is the same as the number of the guide grooves 1001, and the size of the movable coils 7 is matched with the size of the guide grooves 1001.

In this embodiment, guide slot 1001 can make things convenient for the staff to fix a position movable coil 7, the staff can accomplish preliminary location when putting into guide slot 1001 with movable coil 7 when the installation, when movable coil 7 is installed on short rack 606, slider 801 on plug 8 can still set up in guide slot 1001's inside, afterwards after staff rotates handle 602, movable coil 7 moves to mounting groove 502 inside, plug 8 can produce the slip between this moment and slider 801, the effect of slider 801 is to support movable coil 7, prevent that movable coil 7 from taking place the dislocation, slider 801 and plug 8 can remain relatively static when only receiving gravity, can not produce the slip.

The application method and the working principle of the device are as follows: when the power of the permanent magnet direct-drive motorized pulley needs to be increased, a worker can insert a plurality of movable coils 7 into the permanent magnet direct-drive motorized pulley from the guide plate 10, then after the installation of the movable coils 7 and the short racks 606 is completed, the worker pulls the handle 602 to slide in the limiting groove 401, the handle 602 drives the rack ring 601 to rotate around the circle center of the handle, the rack ring 601 drives the plurality of gears 603 to rotate after rotating, the plurality of gears 603 respectively drive the short racks 606 meshed with the gears to slide in the first sliding groove 605, the short racks 606 can slide along the inside of the first sliding groove 605 but cannot be separated from the first sliding groove 605, when the short rack 606 moves, the movable coil 7 is driven to move towards the inner stator 5, the movable coil 7 is gradually inserted into the mounting groove 502 in the moving process, meanwhile, the plug 8 is inserted into the socket 503, the plug 8 enables the movable coil 7 to be connected into an internal circuit of the inner stator 5, the movable coil 7 is electrified, a magnetic field is generated after the movable coil 7 is electrified and is overlapped with a magnetic field generated by the original fixed coil 501, so that the total magnetic field intensity is improved, when the driving device 1 drives the rotating roller 3 to rotate, the permanent magnet 301 in the rotating roller 3 can continuously cut magnetic induction lines generated by the fixed coil 501 and the movable coil 7 and generate current, thereby increasing the power of the permanent magnet direct-drive motorized pulley; when the movable coil 7 is mounted with the short rack 606, along with the movement of the movable coil 7, the fixed column 901 on the positioning block 9 continuously enters the positioning groove 607, the semicircular surface of the semicircular fixed block 903 is firstly contacted with the limiting block 610 and pushed to slide in the second sliding groove 608, the limiting block 610 further pushes the sliding column 609 to move and extrude the spring 611, the spring 611 generates elastic force after being extruded, after the semicircular surface of the semicircular fixed block 903 is separated from the limiting block 610, the spring 611 releases the elastic force to enable the limiting block 610 and the sliding column 609 to reversely move, at the moment, the limiting block 610 is clamped with the non-semicircular surface of the semicircular fixed block 903, thus, the installation of the positioning block 9 and the movable coil 7 is completed, when the movable coil 7 needs to be disassembled, a worker hooks the hanging ring 802 by using the push rod with the hook and pushes the movable coil 7, at the moment, the fixed column 901 moves further towards the inside of the positioning groove 607, at the moment, the limiting block 610 contacts with one inclined plane of the sliding ring 902, when the sliding ring 902 slides to the top end of the fixed column 901, the limiting block 610 moves in the second sliding groove 608 in the same way, after the limiting block 610 is separated from the inclined plane of the side, the limiting block 610 slides to the inclined plane of the other side immediately and is clamped with the inclined plane by the elastic force of the spring 611, and then the worker pulls the movable coil 7 outwards, at this time, the limiting block 610 will block the sliding ring 902 and make it slide towards the direction of the semi-circular fixed block 903, after the semi-circular fixed block 903 contacts with the sliding ring 902, the limiting block 610 is limited by the sliding ring 902 and moves into the second chute 608 again, because the maximum diameters of the sliding ring 902 and the semi-circular fixed block 903 are equal, the limiting block 610 will also separate from the semi-circular fixed block 903 after separating from the inclined plane of the other side of the sliding ring 902, and then the staff can finish the disassembly by continuously pulling out the movable coil 7 outwards; guide slot 1001 can make things convenient for the staff to fix a position movable coil 7, and the staff can accomplish preliminary location in putting movable coil 7 into guide slot 1001 when the installation, and when movable coil 7 was installed on short rack 606, slider 801 on plug 8 can still set up in guide slot 1001's inside, later after the staff rotates handle 602, movable coil 7 is to the inside activity of mounting groove 502, produces the slip between plug 8 and slider 801 this moment, and the effect of slider 801 is to supporting movable coil 7, prevents that movable coil 7 from taking place the dislocation.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (8)

1. The utility model provides a high-power motorized pulley of permanent magnetism direct drive, includes drive arrangement (1), fixed part (2) and rotates cylinder (3), its characterized in that: an inner stator (5) is arranged in the rotary drum (3), a plurality of fixed coils (501) are fixedly arranged on the outer surface of the inner stator (5), a plurality of mounting grooves (502) are formed in the outer surface of the inner stator (5), a plurality of short racks (606) are slidably connected to the inner wall of the mounting grooves (502), a coil adjusting mechanism (6) is arranged at one end of the inner stator (5), the coil adjusting mechanism (6) comprises a rack ring (601), a handle (602) is fixedly arranged at one end of the rack ring (601), a plurality of gears (603) are meshed with the inner wall of the rack ring (601), a plurality of first sliding grooves (605) are rotatably connected to the other end of the rack ring (601), a plurality of short racks (606) are slidably connected to the inner wall of the first sliding grooves (605), the number of the short racks (606) is the same as the number of the plurality of the gears (603), the short racks (606) are meshed with the gears (603), a plurality of movable pins (7) are meshed with one end of the short racks (603), a movable pin (8) is arranged at one end of the movable pin (7), the inner stator (5) is internally provided with a circuit for supplying power to the fixed coil (501) and the movable coil (7);

The novel inner stator comprises an inner stator (5), and is characterized in that a guide plate (10) is fixedly arranged at the other end of the inner stator (5), a plurality of guide grooves (1001) are formed in one end of the guide plate (10) in a penetrating mode, a plurality of connecting rods (11) are fixedly arranged at the other end of the guide plate (10), one end of each connecting rod (11) is fixedly arranged on the outer surface of a fixing ring (604), a fixing plate (4) is fixedly sleeved at one end of the inner stator (5), a limiting groove (401) is formed in one end of each fixing plate (4) in a penetrating mode, one end of each handle (602) is connected with the inner wall of each limiting groove (401) in a sliding mode, a sliding block (801) is connected with the other end of each plug (8) in a sliding mode, and a hanging ring (802) is fixedly connected with one end of each sliding block (801);

The output end of the driving device (1) is in transmission connection with one end of the rotary roller (3), a plurality of permanent magnets (301) are fixedly arranged on the inner wall of the rotary roller (3), the inner wall of the rotary roller (3) is in rotary connection with the outer surface of the guide plate (10), and the outer surface of the fixing plate (4) is in rotary connection with the inner wall of the rotary roller (3).

2. The permanent magnet direct drive high power motorized pulley as set forth in claim 1, wherein: positioning grooves (607) are formed in one end of the short toothed bar (606), two second sliding grooves (608) are formed in the inner wall of each positioning groove (607) in a penetrating mode, sliding columns (609) are connected to the inner walls of the second sliding grooves (608) in a sliding mode, limiting blocks (610) are fixedly connected to one ends of the sliding columns (609), springs (611) are arranged on the outer surfaces of the sliding columns (609), positioning blocks (9) are fixedly arranged at the other ends of the movable coils (7), fixing columns (901) are fixedly connected to one ends of the positioning blocks (9), sliding rings (902) are connected to the outer surfaces of the fixing columns (901) in a sliding mode, semicircular fixing blocks (903) are fixedly connected to one ends of the fixing columns (901) in a sliding mode, and the inner walls of the positioning grooves (607) are fixedly connected to one ends of the fixing columns, and the maximum diameters of the semicircular fixing blocks (903) are the same.

3. The permanent magnet direct drive high power motorized pulley as set forth in claim 1, wherein: the number of the fixed coils (501) is the same as that of the mounting grooves (502), and the fixed coils (501) and the mounting grooves (502) are staggered on the outer surface of the inner stator (5).

4. The permanent magnet direct drive high power motorized pulley as set forth in claim 1, wherein: the number of the movable coils (7) is the same as that of the mounting grooves (502), the sizes of the movable coils (7) are matched with those of the mounting grooves (502), the number of the movable coils (7) is the same as that of the guide grooves (1001), and the sizes of the movable coils (7) are matched with those of the guide grooves (1001).

5. The permanent magnet direct drive high power motorized pulley as set forth in claim 1, wherein: the outer surface of the inner stator (5) is fixedly provided with a plurality of L-shaped fixing columns (504), the number of the L-shaped fixing columns (504) is the same as that of the gears (603), and one end of each L-shaped fixing column (504) is rotationally connected with one end of each gear (603).

6. A permanent magnet direct drive high power motorized pulley as set forth in claim 2, wherein: one end of the spring (611) is fixedly connected with the outer surface of the sliding column (609), and the other end of the spring (611) is fixedly connected with the inner wall of the second chute (608).

7. The permanent magnet direct drive high power motorized pulley as set forth in claim 1, wherein: the outer surface of the inner stator (5) is fixedly arranged with the inner wall of the fixed ring (604).

8. A permanent magnet direct drive high power motorized pulley as set forth in claim 2, wherein: inclined planes are arranged at two ends of the sliding ring (902).