Energy-saving collapsible drum based on magnetic suspension direct drive

Abstract

The invention relates to the technical field of metal processing, and discloses an energy-saving collapsible drum based on magnetic suspension direct drive, which comprises a positioning roller rod which is a main structure of the collapsible drum, the positioning roller rod is sleeved with a stator assembly and a rotor assembly, and the stator assembly and the rotor assembly form a main structure of a magnetic suspension direct drive motor. The power is main power for expanding and shrinking the winding drum. According to the energy-saving collapsible winding drum based on magnetic suspension direct drive, a magnetic suspension direct drive motor structure composed of the stator assembly and the rotor assembly is adopted as a main power source in the collapsible winding drum, an axial opening is formed in the positioning roller rod to arrange a power supply cable, and it is guaranteed that electric energy is stably transmitted to the stator assembly through a reasonable wiring mode; and the insulating rings at the two ends of the rotor assembly abut against the limiting rings, so that the axial displacement of the rotor assembly is limited, the position stability of the rotor assembly in the rotating process is ensured, electrical insulation can be achieved through the insulating rings, and safety accidents and equipment faults caused by current leakage are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, and particularly to an energy-saving expanding and contracting reel based on magnetic levitation direct drive. Background Art

[0002] In current industrial production, traditional expanding and contracting reels are widely used in the coil processing process. However, their drawbacks are becoming increasingly prominent. The expanding and contracting reel is used to adjust the diameter of the reel during the operation of metal processing equipment to adapt to different coil widths. At the same time, the expanding and contracting reel adjusts the tension of the material by adjusting the diameter of the roller to better control the tightness and flatness of the coil. Traditional reels mostly rely on motors with complex mechanical transmission mechanisms, such as belts, chains, and gear reducers. In the process of power transmission, due to friction and vibration between components, the energy loss is huge, resulting in some defects in the actual application process. For example:

[0003] The gaps and wear of traditional mechanical transmission components lead to a decrease in transmission accuracy. As a result, when winding high-precision cables, it is difficult to ensure the tightness and uniformity of cable winding, affecting product quality. Moreover, the inherent inertia and complex structure of the traditional reel mechanical transmission system make the response of the equipment slow, resulting in poor performance in control accuracy and unable to meet the production requirements of modern industry.

[0004] In view of the above problems, there is an urgent need for innovative design based on the original expanding and contracting reel. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-saving expanding and contracting reel based on magnetic levitation direct drive to solve the problems mentioned in the above background art, that is, the gaps and wear of traditional mechanical transmission components lead to a decrease in transmission accuracy, so that when winding high-precision cables, it is difficult to ensure the tightness and uniformity of cable winding, affecting product quality, and the inherent inertia and complex structure of the traditional reel mechanical transmission system make the response of the equipment slow, resulting in poor performance in control accuracy and unable to meet the production requirements of modern industry.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An energy-saving expanding and contracting reel based on magnetic levitation direct drive, including a positioning roller rod, which is the main structure of the expanding and contracting reel. A stator assembly and a rotor assembly are sleeved outside the positioning roller rod, and the stator assembly and the rotor assembly constitute the main structure of the magnetic levitation direct drive motor, which is the main power of the expanding and contracting reel;

[0007] An axial opening is provided inside the positioning roller rod, and a power supply cable connecting the stator assembly is installed inside the opening of the positioning roller rod. The power supply cable is butted against a wiring terminal. One insulating ring is fixedly installed at each end of the rotor assembly, and the insulating ring abuts against a limiting ring. The limiting ring is sleeved on the surface of the positioning roller rod, and the positioning roller rod penetrates through the inner layer of the auxiliary bearing;

[0008] The insulating ring and the outer wall surface of the rotor assembly are sleeved with a breathable sleeve, and a section of connecting thread is provided on the surface of the breathable sleeve. The connecting thread is threadedly connected to the inner layer of the double-layer ring of the expansion and contraction assembly. The expansion and contraction assembly includes a positioning ring and a displacement ring sleeved on the outer wall surface of the breathable sleeve;

[0009] The outer wall surface of the positioning ring is equidistantly embedded with a first rotating seat. The first rotating seat is rotatably connected to one end of a first support frame, and the other end of the first support frame is rotatably connected to one end of an adjusting frame. The first rotating seat is a T-shaped base in which a shaft rod connected to the first support frame rotates. The other end of the adjusting frame is rotatably connected to the end of a third support frame, and the other end of the third support frame rotates with a third rotating seat. The third rotating seats are equidistantly embedded in the outer ring of the double-layer ring.

[0010] With the above technical solutions, the structure of the magnetic levitation direct drive motor has contactless transmission, reduces frictional losses, improves energy conversion efficiency, reduces energy consumption, and the connection relationships of each component are clear, ensuring stable overall operation.

[0011] Preferably, a ball ring is embedded at the connection between the limiting ring and the insulating ring, and a convex block in contact with the ball ring is provided on the end face of the insulating ring.

[0012] With the above technical solutions, the limiting ring and the insulating ring cooperate to limit the axial displacement of the rotor and ensure rotational stability; the insulating ring realizes electrical insulation and guarantees equipment safety.

[0013] Preferably, a plurality of micropores for heat dissipation are equidistantly provided inside the breathable sleeve, and a section of chute is provided on the surface of the breathable sleeve, and the chute of the breathable sleeve is adjacent to the connecting thread.

[0014] With the above technical solutions, the micropores realize the heat dissipation function, prevent the performance of the equipment from decreasing due to heat accumulation, and extend the service life; the chute provides a guide for the movement of the displacement ring.

[0015] Preferably, the expansion and contraction assembly further includes a connecting frame, a telescopic column, a second rotating seat, a second support frame, a third support frame and a third rotating seat, and the structures of the second rotating seat and the third rotating seat are the same as the structure of the first rotating seat.

[0016] With the above technical solutions, the composition of the expansion and contraction assembly is clear, and each component cooperates to realize the radial expansion and contraction action of the reel, meeting the requirements of coil processing.

[0017] Preferably, the connecting frame is sleeved on the outer layer of an auxiliary bearing, and a plurality of telescopic columns are equidistantly provided inside the connecting frame.

[0018] By adopting the above technical solution, the connecting frame cooperates with the auxiliary bearing and the telescopic column to provide support and installation basis for the telescopic column, thereby ensuring the stability of the telescopic action.

[0019] Preferably, the telescopic column passes through the positioning ring, and the output end of the telescopic column is fixed to the displacement ring, and the displacement ring moves in the slide groove on the surface of the breathable sleeve.

[0020] By adopting the above technical solution, the telescopic column drives the displacement ring to move, accurately controls the movement of the expansion and contraction components, and realizes precise adjustment of the expansion and contraction amount of the reel.

[0021] Preferably, the adjustment frame is a T-shaped structure, a slide rail structure is provided inside the adjustment frame, and the adjustment frame surrounds the outer side of the breathable sleeve.

[0022] By adopting the above technical solution, the adjustment frame structure provides guidance and stable support for displacement transmission, ensuring accurate displacement transmission between components.

[0023] Preferably, the rotating seat 2 rotates with one end of the supporting frame 2, and the shaft rod at the other end of the supporting frame 2 slides in the slide rail of the adjusting frame, and a silicone sleeve is provided at the connection between the shaft rods of the supporting frame 2.

[0024] By adopting the above technical solution, the rotating seat cooperates with the supporting frame and the adjusting frame, and the silicone sleeve on the shaft reduces friction and shaking, thereby improving transmission stability and reliability.

[0025] Preferably, the positioning ring, the displacement ring and the double-layer ring are arranged parallel to the axis direction of the positioning roller rod, and a gap is left between the positioning ring and the surface of the breathable sleeve.

[0026] By adopting the above technical solution, the components are arranged in parallel and a gap is left between the positioning ring and the breathable sleeve to avoid interference, thereby facilitating installation, maintenance and overhaul.

[0027] Preferably, the double-layer ring is a double-layer structure and is connected by ball rotation, and the inner wall surface of the inner layer of the double-layer ring has raised threads.

[0028] By adopting the above technical solution, the double-layer ring structure ensures transmission accuracy and stability, and the ball rotation connection enables the outer ring to rotate flexibly, thereby improving the flexibility and efficiency of expansion and contraction movements.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-saving expansion and contraction reel based on magnetic suspension direct drive:

[0030] 1. The expansion and contraction reel adopts a magnetic levitation direct-drive motor structure consisting of a stator assembly and a rotor assembly as the main power source. An axial opening is opened in the positioning roller rod to arrange the power supply cable. The reasonable wiring method ensures the stable transmission of electric energy to the stator assembly. The insulating rings and limit rings at both ends of the rotor assembly offset each other to limit the axial displacement of the rotor assembly, ensuring its position stability during rotation. The insulating rings can also achieve electrical insulation to prevent current leakage, ensure the safe operation of the equipment, avoid safety accidents and equipment failures caused by leakage, provide guarantee for the efficient operation of the magnetic levitation direct-drive motor, and further improve the stability and reliability of the power system. The magnetic levitation direct-drive technology realizes contactless transmission, eliminates friction losses between transmission components such as gears and belts, improves energy conversion efficiency, and reduces energy consumption.

[0031] 2. Heat dissipation microholes are evenly spaced inside the breathable sleeve outside the rotor assembly to effectively promote the internal heat dissipation during the operation of the reel, and promptly remove the heat generated by the magnetic suspension direct drive motor and the expansion and contraction structure, avoiding excessive temperature of the equipment due to heat accumulation, affecting the motor performance and the life of electronic components, effectively ensuring the stable operation of the equipment in a suitable temperature environment, and extending the overall service life of the equipment;

[0032] 3. The expansion and contraction assembly in the expansion and contraction reel is connected to the inner thread of the double-layer ring through the surface connection thread of the breathable sleeve, combined with the rotation connection transmission structure between the positioning ring, displacement ring, rotating seat, support frame, adjustment frame and other components, which can accurately convert the linear motion of the displacement ring into the radial expansion and contraction motion of the double-layer ring. This design realizes the reliable tightening or loosening function of the reel on the coiled material, meeting the requirements of the expansion and contraction of the reel for different coiled material processing;

[0033] The telescopic column passes through the positioning ring and is fixed to the displacement ring. The displacement ring moves in the sliding groove on the surface of the breathable sleeve. By controlling the extension and contraction of the telescopic column, the moving distance of the displacement ring can be accurately controlled, thereby realizing accurate control of the radial expansion and contraction of the double-layer ring, improving the expansion and contraction accuracy. It is suitable for production scenarios with high requirements for coil processing accuracy. The second set of support frames in the slide rails of the adjustment frame is equipped with a silicone sleeve to ensure the accuracy and stability of the displacement transmission process, reduce the shaking and gap errors between components, and further improve the accuracy and reliability of the expansion and contraction action.

[0034] 4. Furthermore, the double-layer ring adopts a double-layer structure and is connected by ball bearing rotation. The inner wall of the inner layer has a raised thread to ensure the transmission accuracy and stability when cooperating with the connecting thread of the breathable sleeve, and the outer ring can rotate flexibly relative to the inner ring, which is convenient for cooperating with other components to realize radial expansion and contraction, while reducing the friction resistance between components and improving the operation efficiency and flexibility of the equipment. The positioning ring, displacement ring and double-layer ring are arranged parallel to the axis direction of the positioning roller rod, and a gap is left between the positioning ring and the surface of the breathable sleeve, so that the components can be installed compactly and orderly to avoid mutual interference, and at the same time provide convenient conditions for the maintenance and overhaul of the equipment. Brief Description of the Drawings

[0035] Figure 1 It is a schematic external three-dimensional structure diagram of the whole invention;

[0036] Figure 2 It is a schematic internal top-down three-dimensional structure diagram of the whole invention;

[0037] Figure 3 It is a schematic exploded three-dimensional structure diagram of the whole invention;

[0038] Figure 4 It is a schematic three-dimensional structure diagram of the installation of the limit ring and the ventilation sleeve of the present invention;

[0039] Figure 5 It is a schematic top-down three-dimensional structure diagram of the rotor assembly and the ventilation sleeve of the present invention;

[0040] Figure 6 It is a schematic three-dimensional structure diagram of the installation of the rotor assembly and the insulating ring of the present invention;

[0041] Figure 7 It is a schematic structural diagram of the installation position of the stator assembly and the rotor assembly of the present invention;

[0042] Figure 8 It is a schematic three-dimensional structure diagram of the expansion and contraction assembly of the present invention;

[0043] Figure 9 It is a schematic three-dimensional structure diagram of the installation of the positioning ring, the displacement ring and the double-layer ring of the present invention;

[0044] Figure 10 It is a schematic three-dimensional structure diagram of the second sliding position of the limit ring and the support frame of the present invention.

[0045] In the figure: 1. positioning roller rod; 2. stator assembly; 3. rotor assembly; 4. wiring terminal; 5. limit ring; 6. insulating ring; 7. auxiliary bearing; 8. ventilation sleeve; 9. connecting thread; 10. connecting frame; 11. telescopic column; 12. positioning ring; 13. rotating seat one; 14. support frame one; 15. adjusting frame; 16. displacement ring; 17. rotating seat two; 18. support frame two; 19. support frame three; 20. rotating seat three; 21. double-layer ring. Detailed Description of the Invention

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figures 1 - 10, the present invention provides a technical solution: an energy-saving expanding and contracting drum based on magnetic levitation direct drive, including a positioning roller rod 1, a stator assembly 2, a rotor assembly 3, a wiring terminal 4, a limiting ring 5, an insulating ring 6, an auxiliary bearing 7, a ventilation sleeve 8, a connecting thread 9, a connecting frame 10, a telescopic column 11, a positioning ring 12, a first rotating seat 13, a first support frame 14, an adjusting frame 15, a displacement ring 16, a second rotating seat 17, a second support frame 18, a third support frame 19, a third rotating seat 20 and a double-layer ring 21;

[0048] Among them, the positioning roller rod 1 is the main structure of the expanding and contracting drum. A stator assembly 2 and a rotor assembly 3 are sleeved outside the positioning roller rod 1, and the stator assembly 2 and the rotor assembly 3 constitute the main structure of the magnetic levitation direct drive motor, which is the main power of the expanding and contracting drum;

[0049] An axial opening is formed in the positioning roller rod 1, and a power supply cable connecting the stator assembly 2 is installed in the opening of the positioning roller rod 1, and this power supply cable is docked with the wiring terminal 4. One insulating ring 6 is fixedly installed at each end of the rotor assembly 3, and the insulating ring 6 abuts against the limiting ring 5. A ball ring is embedded at the connection between the limiting ring 5 and the insulating ring 6, and there is a convex block on the end face of the insulating ring 6 in contact with the ball ring. The limiting ring 5 is sleeved on the surface of the positioning roller rod 1, and the positioning roller rod 1 penetrates through the inner layer of the auxiliary bearing 7;

[0050] Combined with the Figures 1 - 10 shown in the attached drawings of the specification, the stator assembly 2 and the rotor assembly 3 are sequentially sleeved outside the positioning roller rod 1, and the stator assembly 2 is connected to the wiring terminal 4 through the power supply cable in the axial opening in the positioning roller rod 1. The cable uses a silicone rubber cable with high temperature resistance and good insulation performance to ensure stable power transmission;

[0051] Insulating rings 6 are installed at both ends of the rotor assembly 3, which are made of polytetrafluoroethylene material. At this time, the insulating ring 6 abuts against the limiting ring 5, thereby restricting the axial displacement of the rotor assembly 3 and ensuring its position stability during rotation. Electrical insulation can also be achieved through the insulating ring 6 to prevent current leakage, ensure the safe operation of the equipment, and avoid safety accidents and equipment failures caused by electric leakage. Since a ball ring is embedded in the limiting ring 5, rolling contact is formed with the convex block on the end face of the insulating ring 6, reducing the frictional resistance. The positioning roller rod 1 penetrates through the inner layer of the auxiliary bearing 7, and the auxiliary bearing 7 uses a high-precision angular contact ball bearing to enhance the rotational stability of the rotor assembly 3 and reduce the adverse effects of factors such as vibration on the overall structure and performance of the equipment, extending the service life of the equipment. A ventilation sleeve 8 is sleeved on the outer wall surface of the insulating ring 6 and the rotor assembly 3. The ventilation sleeve 8 is made of aluminum alloy material, and micropores are opened on the surface for heat dissipation. The connecting thread 9 on the surface of the ventilation sleeve 8 is threadedly matched with the inner layer thread of the double-layer ring 21 to ensure the transmission accuracy;

[0052] An insulating ring 6 and an outer wall surface of a rotor assembly 3 are sleeved with a breathable sleeve 8, and a connecting thread 9 is arranged on a surface of the breathable sleeve 8. The connecting thread 9 is in threaded connection with an inner layer of a double-layer ring 21 of an expansion and contraction assembly. The expansion and contraction assembly includes a positioning ring 12 and a displacement ring 16 sleeved and installed on an outer wall surface of the breathable sleeve 8. Micropores for heat dissipation are equidistantly arranged in the breathable sleeve 8, and a chute is arranged on a surface of the breathable sleeve 8, and the chute of the breathable sleeve 8 is adjacent to the connecting thread 9;

[0053] Micropores for heat dissipation are equidistantly arranged in the breathable sleeve 8. During the operation of the reel, it can effectively promote the dissipation of internal heat, timely take away the heat generated by the operation of the magnetic levitation direct drive motor and the expansion and contraction structure, avoid problems such as too high equipment temperature caused by heat accumulation, affecting the motor performance, the service life of electronic components, and the mechanical properties of materials, ensure the stable operation of the equipment in a suitable temperature environment, and extend the overall service life of the equipment;

[0054] Rotating seats I 13 are equidistantly embedded on an outer wall surface of the positioning ring 12, and one end of the rotating seat I 13 is rotatably connected to one end of a support frame I 14, and the other end of the support frame I 14 is rotatably connected to one end of an adjusting frame 15. The rotating seat I 13 is a T-shaped base with a shaft rod connected to the support frame I 14 rotating therein. The other end of the adjusting frame 15 is rotatably connected to an end of a support frame III 19, and the other end of the support frame III 19 is rotatably connected to a rotating seat III 20. The rotating seat III 20 is equidistantly embedded in an outer ring of the double-layer ring 21. The expansion and contraction assembly further includes a connecting frame 10, a telescopic column 11, a rotating seat II 17, a support frame II 18, a support frame III 19 and a rotating seat III 20. The structures of the rotating seat II 17 and the rotating seat III 20 are the same as the structure of the rotating seat I 13. The connecting frame 10 is sleeved on an outer layer of an auxiliary bearing 7, and telescopic columns 11 are equidistantly arranged in the connecting frame 10. The telescopic columns 11 penetrate through the positioning ring 12, and an output end of the telescopic column 11 is fixed to the displacement ring 16. The displacement ring 16 moves in the chute on the surface of the breathable sleeve 8. The adjusting frame 15 is a T-shaped structure, and a slide rail structure is arranged in the adjusting frame 15, and the adjusting frame 15 surrounds the outer side of the breathable sleeve 8. The rotating seat II 17 is rotatably connected to one end of the support frame II 18, and a shaft rod at the other end of the support frame II 18 slides in the slide rail of the adjusting frame 15, and a silica gel sleeve is sleeved at a connection part of the shaft rod of the support frame II 18. The positioning ring 12, the displacement ring 16 and the double-layer ring 21 are arranged parallel to the axis direction of the positioning roller rod 1, and a gap is left between the positioning ring 12 and the surface of the breathable sleeve 8. The double-layer ring 21 is a double-layer structure and is connected by rolling with balls. The inner wall surface of the inner layer of the double-layer ring 21 has protruding threads.

[0055] Combined with the Figures 1 - 10As shown, the connecting frame 10 is sleeved on the outer layer of an auxiliary bearing 7, and the telescopic columns 11 are equidistantly installed inside the connecting frame 10. A servo electric cylinder is used to make the displacement ring 16 at the output end of the telescopic column 11 slide in the slide groove on the surface of the air-permeable sleeve 8, and the slide groove of the air-permeable sleeve 8 and the displacement ring 16 rotate in a structure to ensure that the displacement ring 16 moves smoothly. Six groups of rotating seats 13 are equidistantly embedded in the outer wall of the positioning ring 12. The T-shaped base of the rotating seat 13 provides support for the rotation of the support frame 14. Among them, the support frame 14, the support frame 2 18 and the support frame 3 19 are all made of high-strength aluminum alloy profiles, which ensure the structural strength while reducing the weight. Among them, the adjustment frame 15 is a T-shaped structure. The built-in slide rail of the support frame 2 18 slides with the shaft rod of the support frame 2 to ensure the accuracy and stability of the displacement transmission process, reduce the shaking and gap errors between the components, and further improve the accuracy and reliability of the expansion and contraction action.

[0056] The expansion and contraction assembly is connected to the inner thread of the double-layer ring 21 through the connecting thread 9 on the surface of the breathable sleeve 8. Combined with the rotational connection transmission structure between the positioning ring 12, the displacement ring 16, and the rotating seat, the support frame, the adjustment frame and other components, the linear motion of the displacement ring 16 can be accurately converted into the radial expansion and contraction motion of the double-layer ring 21, so as to realize the reliable tightening or loosening function of the reel on the coiled material, and meet the requirements of the expansion and contraction of the reel for different coiled material processing. The telescopic column 11 passes through the positioning ring 12 and is fixed to the displacement ring 16. The displacement ring 16 moves in the sliding groove on the surface of the breathable sleeve 8. By controlling the expansion and contraction of the telescopic column 11, the moving distance of the displacement ring 16 can be accurately controlled, thereby realizing the expansion and contraction of the reel. The precise control of the radial expansion and contraction amount of the double-layer ring 21 improves the expansion and contraction accuracy, and is suitable for production scenarios with high requirements for coil processing accuracy. When the adjustment frame 15 needs to be contracted, the current supply direction of the stator assembly 2 is reversed, so that the rotor assembly 3 rotates in the opposite direction, so that the double-layer ring 21 rotates and resets. When the double-layer ring 21 is worn and it is difficult to effectively link with the connecting thread 9, the telescopic column 11 is extended to displace the displacement ring 16 and push the adjustment frame 15 to expand. When shrinking the coil, the telescopic column 11 contracts, causing the displacement ring 16 to move in the opposite direction. The components are linked to cause the outer ring of the double-layer ring 21 to shrink radially, thereby loosening the coil.

[0057] Working principle: When using the energy-saving expansion and contraction reel based on magnetic levitation direct drive, firstly, the stator assembly 2 and the rotor assembly 3 arranged outside the positioning roller rod 1 constitute the main structure of the magnetic levitation direct drive motor. The electric energy is transmitted to the stator assembly 2 through the power supply cable in the axial opening in the positioning roller rod 1. The insulating rings 6 at both ends of the rotor assembly 3 are against the limit ring 5. The limit ring 5 is sleeved on the surface of the positioning roller rod 1, which can play an axial limit role on the rotor assembly 3. The heat dissipation micropores are evenly spaced in the breathable sleeve 8, which can promote the internal heat dissipation when the reel is working, and avoid the heat accumulation generated by the motor and the expansion and contraction structure, which affects the performance and life of the equipment.

[0058] After the stator assembly 2 is powered on, the rotor assembly 3 rotates to drive the ventilation sleeve 8 to rotate synchronously. At this time, the double-layer ring 21 in the connecting thread 9 is a double-layer structure, which is connected by rolling balls. There are raised threads on the inner wall surface of the inner layer. The inner layer thread cooperates with the connecting thread 9 of the ventilation sleeve 8 to ensure the transmission accuracy and stability during the expansion and contraction movement. During the movement of the double-layer ring 21, the support frame three 19 is moved to push the adjusting frame 15 to expand outward, so that the metal coil contacted by the outside of the adjusting frame 15 expands and contracts. As the adjusting frame 15 expands outward, the support frame two 18 and the support frame one 14 move synchronously to maintain stability. When the displacement ring 16 moves, the accuracy and stability of displacement transmission are ensured. When the adjusting frame 15 expands or contracts in the radial direction, the function of tightening or loosening the coil by the reel is realized. Among them, because there is a slide rail in the adjusting frame 15, in actual use, the position of the displacement ring 16 is pushed by the telescopic column 11, and the shaft of the support frame two 18 slides, so as to adjust the support point of the adjusting frame 15, so that the support adjustment of the adjusting frame 15 during the expansion and contraction of the coil is coordinated with components such as the support frame three 19 and the rotating seat three 20 to realize a smooth radial expansion and contraction action, while reducing the frictional resistance between components and improving the overall operation efficiency of the equipment. When it is necessary to contract the adjusting frame 15, the current supply direction of the stator assembly 2 is changed to make the rotor assembly 3 rotate in the reverse direction, driving the double-layer ring 21 to rotate and reset. When the double-layer ring 21 is worn and it is difficult to effectively link with the connecting thread 9, the telescopic column 11 is extended to displace the displacement ring 16 and push the adjusting frame 15 to expand; when the coil is contracted, the telescopic column 11 contracts, the displacement ring 16 moves in the reverse direction, and each component is linked to radially contract the outer ring of the double-layer ring 21 to loosen the coil.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An energy-saving telescopic drum based on magnetic levitation direct drive, comprising: A positioning roller rod (1), which is the main structure of the telescopic drum. A stator assembly (2) and a rotor assembly (3) are sleeved outside the positioning roller rod (1), and the stator assembly (2) and the rotor assembly (3) constitute the main structure of the magnetic levitation direct drive motor, which is the main power of the telescopic drum; It is characterized in that: an axial opening is formed in the positioning roller rod (1), and a power supply cable connecting the stator assembly (2) is installed in the opening of the positioning roller rod (1), and the power supply cable is docked with a wiring terminal (4). Insulating rings (6) are fixedly installed at both ends of the rotor assembly (3), and the insulating rings (6) are abutted against a limiting ring (5). The limiting ring (5) is sleeved on the surface of the positioning roller rod (1), and the positioning roller rod (1) penetrates through the inner layer of an auxiliary bearing (7); An air-permeable sleeve (8) is sleeved on the outer wall surfaces of the insulating ring (6) and the rotor assembly (3), and a connecting thread (9) is provided on the surface of the air-permeable sleeve (8). The connecting thread (9) is threadedly connected to the inner layer of a double-layer ring (21) of the telescopic assembly. The telescopic assembly includes a positioning ring (12) and a displacement ring (16) sleeved on the outer wall surface of the air-permeable sleeve (8); Rotating seats one (13) are equidistantly embedded in the outer wall surface of the positioning ring (12). The rotating seats one (13) are rotatably connected to one end of a support frame one (14), and the other end of the support frame one (14) is rotatably connected to one end of an adjusting frame (15). The rotating seat one (13) is a T-shaped base in which a shaft rod connected to the support frame one (14) rotates. The other end of the adjusting frame (15) is rotatably connected to the end of a support frame three (19), and the other end of the support frame three (19) rotates with a rotating seat three (20). The rotating seats three (20) are equidistantly embedded in the outer ring of the double-layer ring (21).

2. The energy-saving telescopic drum based on magnetic levitation direct drive according to claim 1, wherein: A ball ring is embedded at the connection between the limiting ring (5) and the insulating ring (6), and a convex block in contact with the ball ring is provided on the end face of the insulating ring (6).

3. The energy-saving expanding and contracting drum based on magnetic levitation direct drive according to claim 1, characterized in that: Micropores for heat dissipation are equidistantly formed in the air-permeable sleeve (8), a chute is formed on the surface of the air-permeable sleeve (8), and the chute of the air-permeable sleeve (8) is adjacent to the connecting thread (9).

4. The energy-saving telescopic drum based on magnetic levitation direct drive according to claim 1, wherein: The telescopic assembly further includes a connecting frame (10), a telescopic column (11), a rotating seat two (17), a support frame two (18), a support frame three (19) and a rotating seat three (20), and the structures of the rotating seat two (17) and the rotating seat three (20) are the same as those of the rotating seat one (13).

5. The energy-saving expandable and contractible drum based on magnetic levitation direct drive according to claim 4, characterized in that: The connecting frame (10) is sleeved on the outer layer of an auxiliary bearing (7), and telescopic columns (11) are equidistantly arranged in the connecting frame (10).

6. The energy-saving expandable and contractible drum based on magnetic levitation direct drive according to claim 4, wherein: The telescopic column (11) penetrates through the positioning ring (12), and the output end of the telescopic column (11) is fixed to the displacement ring (16). The displacement ring (16) moves in the chute on the surface of the air-permeable sleeve (8).

7. The energy-saving expanding and contracting drum based on magnetic levitation direct drive according to claim 1, wherein: The adjusting frame (15) is of a T-shaped structure, a slide rail structure is formed in the adjusting frame (15), and the adjusting frame (15) surrounds the outer side of the air-permeable sleeve (8).

8. The energy-saving telescopic reel based on magnetic levitation direct drive according to claim 4, wherein: The rotating seat two (17) rotates with one end of the support frame two (18), and the shaft rod at the other end of the support frame two (18) slides within the slide rail of the adjusting frame (15), and a silica gel sleeve is sleeved at the connection of the shaft rod of the support frame two (18).

9. The energy-saving expandable and contractible drum based on magnetic levitation direct drive according to claim 4, wherein: The positioning ring (12), the displacement ring (16) and the double-layer ring (21) are arranged parallel to each other along the axial direction of the positioning roller rod (1), and there is a gap between the surface of the positioning ring (12) and the air-permeable sleeve (8).

10. The energy-saving telescopic drum based on magnetic levitation direct drive according to claim 1, characterized in that: The double-layer ring (21) has a double-layer structure and is connected by rolling with balls. The inner wall surface of the inner layer of the double-layer ring (21) has protruding threads.

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