A non-supported magnetic vortex flexible non-contact transmission speed regulating device

Abstract

The utility model relates to motor speed regulation energy -conserving technical field discloses a kind of non-supporting type magnetic eddy current flexible non-contact transmission speed regulation device, including limiting bottom, the top left side of the limiting bottom is fixedly connected with DC motor, the output end of the DC motor is fixedly connected with connecting bearing, the right end of the connecting bearing is fixedly connected with conductor rotor, the top right side of the limiting bottom is fixedly connected with fan shell, the left side of the fan shell is fixedly connected with shaft sleeve, the front and back sides of the shaft sleeve are all fixedly connected with electric actuator, the inner wall of the shaft sleeve is provided with clamping strip cylinder.In the utility model, the magnetic field of permanent magnet rotor is rotated and cut by conductor rotor, and then permanent magnet rotor is synchronously rotated by driving, electric actuator pushes hollow ring axial movement, so that hollow ring drives permanent magnet rotor to move, changes the meshing area with conductor rotor, realizes the continuous, stepless regulation of load equipment output speed and torque.

Description

Technical Field

[0001] This utility model relates to the field of motor speed regulation and energy saving technology, and in particular to a supportless magnetic eddy current flexible non-contact transmission speed regulation device. Background Technology

[0002] A supportless magnetic eddy current flexible non-contact transmission speed regulation device is a novel power transmission equipment based on the principle of electromagnetic induction and flexible mechanical structure. Its core is to achieve power and torque transmission through non-contact magnetic coupling between a permanent magnet rotor and a conductor rotor, utilizing the magnetic eddy current effect. By adjusting the axial spacing through an electric actuator to change the magnetic meshing area, stepless control of output speed and torque can be achieved. Compared with traditional gear and belt contact transmission devices, this device completely eliminates mechanical contact and has the advantages of wear-free, lubrication-free, and high reliability. It is especially suitable for scenarios where fans, water pumps, and industrial transmissions require long-term continuous operation or harsh working conditions, providing an innovative technical path for energy-saving speed regulation in modern industry.

[0003] Early magnetic eddy current drive devices employed a "rigid rotor + mechanical support" structure, using bearings and bushings as the rotor support base. While this achieved basic magnetic eddy current drive functions, it had significant drawbacks: the mechanical support components required regular lubrication, otherwise they were prone to failure due to frictional heat, and lubricant leakage would pollute the working environment. To address this issue, existing technologies have gradually introduced semi-non-contact designs, reducing lubrication requirements by adding sealing structures or using self-lubricating bearings to extend maintenance cycles. However, the fundamental nature of the mechanical support remains unchanged; bearings inevitably experience frictional losses during operation, and long-term operation increases bearing clearance, leading to rotor eccentricity and exacerbating magnetic circuit imbalance. Although existing devices have temporarily alleviated some problems by optimizing the lubrication system and support structure, the mechanical support requires contact positioning to maintain rotor stability, and its wear, heat generation, and accuracy degradation problems persist. This makes it difficult to fundamentally achieve the "maintenance-free, long-life" transmission requirements, especially under high-speed, heavy-load conditions. The insufficient reliability of the support structure is a core bottleneck restricting the further promotion of magnetic eddy current drive technology. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a supportless magnetic eddy current flexible non-contact transmission speed regulation device, which aims to improve the problem that the reliability of the support structure is insufficient under high speed and heavy load conditions, which is the core bottleneck restricting the further promotion of magnetic eddy current transmission technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a supportless magnetic eddy current flexible non-contact transmission speed regulating device, comprising a limiting bottom, a DC motor fixedly connected to the top left side of the limiting bottom, a connecting bearing fixedly connected to the output end of the DC motor, a conductor rotor fixedly connected to the right end of the connecting bearing, a fan housing fixedly connected to the top right side of the limiting bottom, a bushing fixedly connected to the left side of the fan housing, electric actuators fixedly connected to the front and rear sides of the bushing, a retaining cylinder provided on the inner wall of the bushing, a permanent magnet rotor slidably connected to the left side of the outer wall of the retaining cylinder, a hollow ring rotatably connected to the right side of the outer wall of the permanent magnet rotor, and one end of each of the two electric actuators fixedly connected to the front and rear sides of the right side of the hollow ring.

[0006] As a further description of the above technical solution:

[0007] The inner wall of the bushing is rotatably connected to a slotted cylinder, and the inner wall of the slotted cylinder is slidably connected to the outer wall of the clip cylinder.

[0008] As a further description of the above technical solution:

[0009] The conductor rotor and the permanent magnet rotor are connected in a non-contact manner, and the inner wall dimension of the conductor rotor is larger than the outer wall dimension of the permanent magnet rotor.

[0010] As a further description of the above technical solution:

[0011] The right end of the retaining bar cylinder penetrates the left side of the fan casing, and a fan blade disk is provided on the right end of the outer wall of the retaining bar cylinder. The inner wall of the fan blade disk is engaged with the right end of the outer wall of the retaining bar cylinder.

[0012] As a further description of the above technical solution:

[0013] The right end of the cylindrical clip is threaded with a mounting screw, and the outer wall of the mounting screw engages with the right side of the outer wall of the fan blade disk.

[0014] As a further description of the above technical solution:

[0015] The left side of the fan casing is fixedly connected with multiple fixing bolts, and the outer walls of the multiple fixing bolts engage with the right side of the bushing.

[0016] As a further description of the above technical solution:

[0017] An air outlet pipe is connected to the rear side of the outer wall of the fan casing, and a flange is fixedly connected to the top end of the air outlet pipe.

[0018] As a further description of the above technical solution:

[0019] The central axis of the conductor rotor and the central axis of the permanent magnet rotor are on the same horizontal plane, and the outer wall dimension of the fan blade disk is smaller than the inner wall dimension of the fan casing.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a DC motor drives the connecting bearing and the conductor rotor to rotate at high speed. The rotating conductor rotor cuts the magnetic field of the permanent magnet rotor, generating an induced electromotive force to form magnetic eddy currents, which in turn drive the permanent magnet rotor to rotate synchronously. The electric actuator receives the control signal and pushes the hollow ring to move axially, so that the hollow ring drives the permanent magnet rotor to slide axially within the bushing, changing its meshing area with the conductor rotor, thereby realizing continuous and stepless adjustment of the output speed and torque of the load equipment. Attached Figure Description

[0022] Figure 1 This is a perspective view of a supportless magnetic eddy current flexible non-contact transmission speed regulating device proposed in this utility model.

[0023] Figure 2 This is a front view of a supportless magnetic eddy current flexible non-contact transmission speed regulating device proposed in this utility model.

[0024] Figure 3 This is a side view of a supportless magnetic eddy current flexible non-contact transmission speed regulating device proposed in this utility model.

[0025] Figure 4 This is a split view of the bushing of a supportless magnetic eddy current flexible non-contact transmission speed regulating device proposed in this utility model.

[0026] Figure 5 This is a split view of the cylindrical clip of a supportless magnetic eddy current flexible non-contact transmission speed regulating device proposed in this utility model.

[0027] Legend:

[0028] 1. Bottom limit switch; 2. DC motor; 3. Connecting bearing; 4. Conductor rotor; 5. Fan housing; 6. Bushing; 7. Electric actuator; 8. Hollow ring; 9. Fan blade disk; 10. Clip cylinder; 11. Slot cylinder; 12. Mounting screw; 13. Permanent magnet rotor; 14. Fixing bolt; 15. Air outlet duct; 16. Flange. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a supportless magnetic eddy current flexible non-contact transmission speed regulating device, including a limiting bottom 1, which is the basic support structure of the entire device. The device is characterized in that: a DC motor 2 is fixedly connected to the top left side of the limiting bottom 1; a connecting bearing 3 is fixedly connected to the output end of the DC motor 2; and a conductor rotor 4 is fixedly connected to the right end of the connecting bearing 3. When the DC motor 2 is powered on, it generates rotational power at its output end, transmitting torque to the conductor rotor 4 through the connecting bearing 3 to make it rotate at high speed. A fan housing 5 is fixedly connected to the top right side of the limiting bottom 1; a bushing 6 is fixedly connected to the left side of the fan housing 5; and electric actuators 7 are fixedly connected to both the front and rear sides of the bushing 6. The electric actuators 7 receive control signals and push a hollow ring 8 to move axially through an internal mechanism. Because the hollow ring 8 is rotatably connected to the right side of a permanent magnet rotor 13, and the permanent magnet rotor 13 is connected to the clamp through a clamping cylinder 10... The slotted cylinder 11 is slidably fitted, and the hollow ring 8 moves axially to drive the permanent magnet rotor 13 to slide axially within the bushing 6, changing its meshing area with the conductor rotor 4. The inner wall of the bushing 6 is provided with a retaining cylinder 10, and the outer left side of the retaining cylinder 10 is slidably connected to the permanent magnet rotor 13. When the conductor rotor 4 rotates, it cuts the magnetic field of the permanent magnet rotor 13, generating an induced electromotive force to form a magnetic eddy current. The magnetic field of the magnetic eddy current interacts with the magnetic field of the permanent magnet rotor 13 to generate an electromagnetic force, driving the permanent magnet rotor 13 to rotate synchronously. The outer right side of the permanent magnet rotor 13 is rotatably connected to the hollow ring 8, and one end of each of the two electric actuators 7 is fixedly connected to the front and rear sides of the right side of the hollow ring 8. The inner wall of the bushing 6 is rotatably connected to the retaining cylinder 11, and the inner wall of the retaining cylinder 11 is slidably connected to the outer wall of the retaining cylinder 10. The conductor rotor 4 and the permanent magnet rotor 13 are connected in a non-contact manner, and the inner wall size of the conductor rotor 4 is larger than the outer wall size of the permanent magnet rotor 13.

[0031] Specifically, the bottom limit 1 is the basic support structure of the entire device. The DC motor 2 is started when the power is turned on, and the output end generates rotational power. The torque is transmitted to the conductor rotor 4 through the connecting bearing 3, making it rotate at high speed. When the conductor rotor 4 rotates, it cuts the magnetic field of the permanent magnet rotor 13, generating an induced electromotive force to form magnetic eddy currents. The magnetic field of the magnetic eddy currents interacts with the magnetic field of the permanent magnet rotor 13 to generate electromagnetic force, driving the permanent magnet rotor 13 to rotate synchronously, realizing non-contact transmission of power and torque. The rotation of the permanent magnet rotor 13 is transmitted to the fan blade disk 9 inside the fan housing 5 through the clamping cylinder 10, making it rotate at high speed. When it is necessary to adjust the load output speed and torque, the electric actuator 7 receives the control signal. The hollow ring 8 is driven to move axially through an internal mechanism. Since the hollow ring 8 is rotatably connected to the right side of the permanent magnet rotor 13, and the permanent magnet rotor 13 is slidably engaged with the slot cylinder 11 through the clip cylinder 10, the axial movement of the hollow ring 8 causes the permanent magnet rotor 13 to slide axially within the bushing 6, changing its meshing area with the conductor rotor 4. When the permanent magnet rotor 13 is close to the conductor rotor 4, the meshing area increases, the magnetic eddy currents are enhanced, the electromagnetic force increases, and the speed and torque of the fan blade disk 9 increase. Conversely, when the permanent magnet rotor 13 is far away from the conductor rotor 4, the meshing area decreases, the magnetic eddy currents are weakened, and the output speed and torque of the fan blade disk 9 decrease, thus realizing continuous and stepless adjustment of the output speed and torque of the load equipment.

[0032] Reference Figure 2 , Figure 4 and Figure 5 The right end of the clamping cylinder 10 penetrates the left side of the fan housing 5, allowing the rotational power generated by the permanent magnet rotor 13 to be directly transmitted to the internal components of the fan. A fan blade disk 9 is provided on the right end of the outer wall of the clamping cylinder 10. The fan blade disk 9 can convert the torque transmitted by the clamping cylinder 10 into the rotational kinetic energy of the fan blade. The inner wall of the fan blade disk 9 engages with the right end of the outer wall of the clamping cylinder 10, preventing circumferential displacement of the fan blade disk 9 during rotation. A mounting screw 12 is threadedly connected to the right end of the clamping cylinder 10. The outer wall of the mounting screw 12 engages with the right side of the outer wall of the fan blade disk 9. The threaded connection facilitates disassembly and installation, while also limiting the axial displacement of the fan blade disk 9. Multiple fixing bolts 14 are fixedly connected to the left side of the fan housing 5. The outer walls of the multiple fixing bolts 14 engage with the right side of the bushing 6. The multi-point fixing method of the fixing bolts 14 can distribute the force at the connection point, improving the strength and reliability of the connection structure.

[0033] Specifically, the right end of the clamping cylinder 10 penetrates the left side of the fan casing 5, allowing the rotational power generated by the permanent magnet rotor 13 to be directly transmitted to the internal components of the fan. The fan blade disk 9 can convert the torque transmitted by the clamping cylinder 10 into the rotational kinetic energy of the fan blades, thereby generating airflow or water flow. The inner wall of the fan blade disk 9 engages with the right end of the outer wall of the clamping cylinder 10, which not only prevents the fan blade disk 9 from circumferential displacement during rotation and ensures stable power transmission, but also reduces vibration and noise caused by eccentricity through precise positioning, thereby improving the stability of the fan operation. The right end of the clamping cylinder 10 is threaded with a mounting screw 12, and the outer wall of the mounting screw 12 engages with the right side of the outer wall of the fan blade disk 9. The threaded connection facilitates disassembly and installation, and at the same time restricts the axial displacement of the fan blade disk 9. The fixing bolt 14 adopts a multi-point fixing method to distribute the force at the connection point and improve the strength and reliability of the connection structure.

[0034] Reference Figure 2 , Figure 3 and Figure 4 The rear side of the outer wall of the fan casing 5 is connected to an air outlet pipe 15. The setting of the air outlet pipe 15 can optimize the airflow path and reduce the turbulence and resistance of the airflow inside the fan. The top of the air outlet pipe 15 is fixedly connected to a flange 16, which can ensure a reliable connection between the air outlet pipe 15 and the external pipe. The central axis of the conductor rotor 4 and the central axis of the permanent magnet rotor 13 are on the same horizontal plane to ensure the best magnetic field coupling effect between the two. The outer wall size of the fan blade disk 9 is smaller than the inner wall size of the fan casing 5 to avoid collision or friction between the fan blade disk 9 and the fan casing 5 during high-speed rotation.

[0035] Specifically, the arrangement of the air outlet duct 15 optimizes the airflow path, reduces turbulence and resistance inside the fan, and improves the fan's air delivery efficiency. The flange 16 ensures a reliable connection between the air outlet duct 15 and the external pipe. The central axis of the conductor rotor 4 and the central axis of the permanent magnet rotor 13 are on the same horizontal plane, ensuring the best magnetic field coupling effect between them. The outer wall size of the fan blade disk 9 is smaller than the inner wall size of the fan casing 5, avoiding collision or friction between the fan blade disk 9 and the fan casing 5 during high-speed rotation.

[0036] Working Principle: First, the bottom limit 1 serves as the basic support structure for the entire device. When the DC motor 2 is powered on and started, its output generates rotational power, which is transmitted to the conductor rotor 4 via the connecting bearing 3, causing it to rotate at high speed. During this rotation, the conductor rotor 4 cuts the magnetic field generated by the permanent magnet rotor 13. According to the law of electromagnetic induction, an induced electromotive force is generated inside the conductor rotor 4, forming closed magnetic eddy currents. The magnetic fields generated by these eddy currents interact with the magnetic field of the permanent magnet rotor 13, generating an electromagnetic force. This electromagnetic force drives the permanent magnet rotor 13 to rotate synchronously, thus achieving non-contact transmission of power and torque. The rotation of the permanent magnet rotor 13 is transmitted to the rotating structure fan blade disk 9 inside the fan housing 5 via the clamping cylinder 10, causing the fan blade disk 9 to rotate at high speed. When it is necessary to adjust the output speed and torque of the load, the electric actuator 7 connects... Upon receiving a control signal, the hollow ring 8 is driven to move axially via an internal servo motor and transmission screw mechanism. Since the hollow ring 8 is rotatably connected to the right side of the permanent magnet rotor 13, and the permanent magnet rotor 13 is slidably engaged with the slot cylinder 11 via the clip cylinder 10, the axial movement of the hollow ring 8 will cause the permanent magnet rotor 13 to slide axially within the bushing 6, thereby changing the meshing area between the permanent magnet rotor 13 and the conductor rotor 4. When the permanent magnet rotor 13 moves closer to the conductor rotor 4, the meshing area between the two increases, more magnetic lines of force are cut by the conductor rotor 4, the generated magnetic eddy currents are enhanced, the electromagnetic force increases, and the speed and torque of the fan blade disk 9 are increased. Conversely, when the permanent magnet rotor 13 moves away from the conductor rotor 4, the meshing area decreases, the magnetic eddy currents weaken, and the output speed and torque of the fan blade disk 9 decrease, ultimately achieving continuous and stepless adjustment of the output speed and torque of the load equipment.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A supportless magnetic eddy current flexible non-contact transmission speed regulating device, comprising a limiting bottom (1), characterized in that: A DC motor (2) is fixedly connected to the top left side of the limiting bottom (1). A connecting bearing (3) is fixedly connected to the output end of the DC motor (2). A conductor rotor (4) is fixedly connected to the right end of the connecting bearing (3). A fan housing (5) is fixedly connected to the top right side of the limiting bottom (1). A bushing (6) is fixedly connected to the left side of the fan housing (5). Electric actuators (7) are fixedly connected to the front and rear sides of the bushing (6). A retaining cylinder (10) is provided on the inner wall of the bushing (6). A permanent magnet rotor (13) is slidably connected to the left side of the outer wall of the retaining cylinder (10). A hollow ring (8) is rotatably connected to the right side of the outer wall of the permanent magnet rotor (13). One end of each of the two electric actuators (7) is fixedly connected to the front and rear sides of the right side of the hollow ring (8).

2. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 1, characterized in that: The inner wall of the bushing (6) is rotatably connected to a slotted cylinder (11), and the inner wall of the slotted cylinder (11) is slidably connected to the outer wall of the clip cylinder (10).

3. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 1, characterized in that: The conductor rotor (4) and the permanent magnet rotor (13) are connected in a non-contact manner, and the inner wall dimension of the conductor rotor (4) is larger than the outer wall dimension of the permanent magnet rotor (13).

4. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 1, characterized in that: The right end of the retaining cylinder (10) penetrates the left side of the fan housing (5). A fan blade disk (9) is provided on the right end of the outer wall of the retaining cylinder (10). The inner wall of the fan blade disk (9) engages with the right end of the outer wall of the retaining cylinder (10).

5. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 4, characterized in that: The right end of the cylindrical clip (10) is threaded with a mounting screw (12), and the outer wall of the mounting screw (12) engages with the right side of the outer wall of the fan blade disk (9).

6. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 1, characterized in that: The left side of the fan housing (5) is fixedly connected with a plurality of fixing bolts (14), and the outer wall of the plurality of fixing bolts (14) engages with the right side of the bushing (6).

7. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 1, characterized in that: The rear side of the outer wall of the fan casing (5) is connected to an air outlet pipe (15), and a flange (16) is fixedly connected to the top end of the air outlet pipe (15).

8. The unsupported magnetic eddy current flexible non-contact transmission speed regulating device according to claim 4, characterized in that: The central axis of the conductor rotor (4) and the central axis of the permanent magnet rotor (13) are on the same horizontal plane, and the outer wall dimension of the fan blade disk (9) is smaller than the inner wall dimension of the fan casing (5).

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