Magnetic coupler

Abstract

The invention discloses a magnetic coupler, and relates to the technical field of transmission, and the magnetic coupler comprises a driving disc which is used for connecting a power source; the driven disc is located in the driving disc and used for transmitting power; the shell cover is located at one end of the driving disc and used for isolating external magnetic field interference; the driving disc magnetic steel is arranged in the driving disc; and the driven disc magnetic steel is arranged in the driven disc, is positioned on the side edge of the driving disc magnetic steel, and is used for being matched with the driving disc magnetic steel to realize flexible connection of the driving disc and the driven disc. In the power transmission process, the unloading effect is achieved in the instant overload operation state, and the transmission shaft is protected against damage caused by overhigh power transmission. The driving disc is connected with a power source and serves as a power input end. The driven disc is connected with the transmission device and serves as a power input end. Driving and driven connection depends on magnetic connection, and homopolar repulsion of magnet blocks is regarded as flexible connection, so that abrasion of a rotating device cannot be caused.

Description

Technical Field

[0001] The present invention relates to the field of transmission technology, in particular to a magnetic coupling. Background Art

[0002] A magnetic coupling is a contactless transmission device that uses a magnetic field to transmit power. Traditional mechanical couplings (such as gears and couplings) rely on physical contact to transmit power. This can lead to wear due to friction over time, requiring frequent maintenance and increasing downtime and costs. Magnetic couplings, on the other hand, transmit torque through a magnetic field, eliminating the need for direct physical contact and eliminating the wear issues associated with traditional mechanical couplings.

[0003] Prior art applications, such as patent application number 201910276894.X, disclose a delayed-start method for a magnetic coupler and a delayed-type magnetic coupler. These include a dual-conductor disk and dual-permanent magnet design, which provide soft-start performance for loads during operation. Another example is patent application number 201721034265.9, which discloses an intelligent magnet-pie transmission robot. The robot includes several magnets and utilizes these magnets for transmission.

[0004] However, the existing magnetic coupling technology still has the following deficiencies: the magnet installation is not flexible enough to achieve the form of odd-even combination and equal-spaced string groups, which further weakens the adaptability of the magnetic coupler to complex working conditions (such as high power, high speed or load fluctuations).

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0006] In response to the problems in the related art, the present invention proposes a magnetic coupler to overcome the above technical problems existing in the existing related art.

[0007] To this end, the specific technical solutions adopted in the present invention are as follows: The magnetic coupler includes: an active disk for connecting to a power source; a driven disk located inside the active disk for transmitting power; an outer cover located at one end of the active disk for isolating external magnetic field interference; an active disk magnet disposed inside the active disk; and a driven disk magnet disposed inside the driven disk and located to the side of the active disk magnet for use in conjunction with the active disk magnet to achieve a soft connection between the active and driven disks.

[0008] Furthermore, in order to achieve even-odd combination and equally spaced string groups, different numbers and groups of active disk magnets and driven disk magnets can be installed according to actual needs, thereby improving the adaptability of the magnetic coupler to complex working conditions. A plurality of first mounting holes are provided inside the active disk, and the active disk magnets are provided in the first mounting holes; a plurality of second mounting holes are provided inside the driven disk, and the driven disk magnets are provided in the second mounting holes; the active disk magnets and the first mounting holes, as well as the driven disk magnets and the second mounting holes, are all clamped together; the active disk magnets and the driven disk magnets are arranged in a ring along the center of the driven disk.

[0009] Furthermore, in order to stably install the driven disk in the active disk, a number of annular mounting grooves are provided inside the active disk, and a driven disk is provided in the annular mounting grooves; the center positions of the several driven disks are connected by a connecting shaft, and a driven disk spacer ring is provided between two adjacent driven disks and on the outside of the connecting shaft; the number of driven disks is at least four groups; a number of weight-reducing holes are provided inside the driven disk, and the weight-reducing holes are arranged in a ring shape along the center of the driven disk.

[0010] Furthermore, in order to isolate the internal and external environments of the magnetic coupler and play a role in dust and moisture prevention, the outer shell cover and the active disk are sealed; a sealing ring is provided inside the outer shell cover, and the end of the sealing ring away from the inner wall of the outer shell cover extends to the side wall of the active disk.

[0011] The beneficial effects of the present invention are: (1) The present invention is used to achieve unloading during power transmission in the event of a momentary overload, thereby protecting the transmission shaft from damage due to excessive power transmission. The driving disc is connected to a power source (such as a motor) and serves as the power input terminal; the driven disc is connected to a transmission device and serves as the power input terminal. The driving and driven devices are connected magnetically, and the magnets with the same poles repel each other, which is considered a soft connection, thus preventing wear on the rotating device.

[0012] (2) The present invention can realize even-odd combination and equal-spaced string groups, and thus can install different numbers and groups of active disk magnets and driven disk magnets according to actual needs, thereby improving the adaptability of the magnetic coupler to complex working conditions.

[0013] (3) The present invention can isolate external magnetic field interference by providing an outer shell cover; and can isolate the internal and external environments of the magnetic coupler by providing a sealing ring, thereby playing a role in preventing dust and moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 is a structural schematic diagram of a magnetic coupler according to an embodiment of the present invention; Figure 2 is a schematic diagram of the internal structure of a magnetic coupler according to an embodiment of the present invention; Figure 3 is a cross-sectional view of a magnetic coupler according to an embodiment of the present invention; Figure 4 3D is a three-dimensional assembly diagram of a magnetic coupler according to an embodiment of the present invention.

[0016] In the picture: 1. Active disk; 2. Driven disk; 3. Housing cover; 4. Active disk magnet; 5. Driven disk magnet; 6. First mounting hole; 7. Second mounting hole; 8. Annular mounting groove; 9. Connecting shaft; 10. Driven disk spacer ring; 11. Weight reduction hole; 12. Sealing ring. DETAILED DESCRIPTION

[0017] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0018] According to an embodiment of the present invention, a magnetic coupling is provided.

[0019] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-4 As shown, the magnetic coupler according to an embodiment of the present invention includes: a magnetic coupler including: an active disk 1 for connecting to a power source; a driven disk 2 located inside the active disk 1 for transmitting power; an outer cover 3 located at one end of the active disk 1 for isolating external magnetic field interference; an active disk magnet 4 arranged inside the active disk 1; a driven disk magnet 5 arranged inside the driven disk 2 and located on the side of the active disk magnet 4, for use in conjunction with the active disk magnet 4 to achieve a soft connection between the active disk 1 and the driven disk 2.

[0020] With the aid of the above solution, the present invention is used to achieve an unloading effect in a momentary overload operation state during power transmission, thereby protecting the transmission shaft from damage due to excessive power transmission.

[0021] In one embodiment, for the active disk 1, a plurality of first mounting holes 6 are provided inside the active disk 1, and the active disk magnets 4 are provided inside the first mounting holes 6; a plurality of second mounting holes 7 are provided inside the driven disk 2, and the driven disk magnets 5 are provided inside the second mounting holes 7; Figure 4 As shown, the first mounting hole 6 is divided into several rows, each row is installed with several active disk magnets 4, and several driven disks 2 and several rows of active disk magnets 4 are arranged in an alternating manner; the active disk magnets 4 and the first mounting holes 6, as well as the driven disk magnets 5 and the second mounting holes 7 are all clamped together; the active disk magnets 4 and the driven disk magnets 5 are arranged in a ring along the center of the driven disk 2.

[0022] The active disk magnet 4 and the driven disk magnet 5 are fixed in the magnetic coupler, and can realize odd-even combination and equal-spaced string groups. Then, different numbers and groups of active disk magnets 4 and driven disk magnets 5 can be installed according to actual needs, thereby improving the adaptability of the magnetic coupler to complex working conditions.

[0023] In one embodiment, for the above-mentioned active disk 1, a plurality of annular mounting grooves 8 are provided inside the active disk 1, and a driven disk 2 is provided in the annular mounting grooves 8; the center positions of the plurality of driven disks 2 are connected by a connecting shaft 9, and a driven disk spacer ring 10 is provided between two adjacent driven disks 2 and located on the outside of the connecting shaft 9; the number of driven disks 2 is at least four groups; a plurality of weight-reducing holes 11 are provided inside the driven disk 2, and the weight-reducing holes 11 are arranged in a ring shape along the center of the driven disk 2, so that the driven disk 2 can be stably installed in the active disk 1.

[0024] In one embodiment, for the above-mentioned outer shell cover 3, the outer shell cover 3 and the active disk 1 are sealed; a sealing ring 12 is provided inside the outer shell cover 3, and the end of the sealing ring 12 away from the inner wall of the outer shell cover 3 extends to the side wall of the active disk 1, thereby isolating the internal and external environments of the magnetic coupler and playing a role in dust and moisture prevention.

[0025] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in actual process is described in detail below.

[0026] In practical applications, first determine the number and number of driver magnets 4 and driven magnets 5 to be installed, ensuring even and odd spacing between the groups. Insert the driver magnets 4 into the first mounting holes 6 and the driven magnets 5 into the second mounting holes 7. Adjacent driven disks 2 are separated by driven disk spacers 10. Both the driver magnets 4 and the driven magnets 5 are strong magnets.

[0027] The driven disc 2 is mounted inside the driving disc 1, and one end of the driving disc 1 is sealed by the outer shell 3, that is, the sealing ring 12 plays a sealing role. A through hole is provided in the middle of the outer shell 3, and one end of the connecting shaft 9 passes through the through hole. The outer shell 3 and the driven disc 2 are connected by bolts, and the driven disc 2 is located in the annular mounting groove 8 in the driving disc 1, so that the outer shell 3 can be fixed. The end of the driving disc 1 away from the outer shell 3 is connected to an external power source, such as the output shaft of a motor, and then the connecting shaft 9 in the middle of the driven disc 2 is connected to other transmission devices. The driving disc 1 and the driven disc 2 are connected by magnetism. The magnet blocks with the same poles repel each other, which is considered a soft connection, so it will not cause wear on the rotating device.

[0028] In summary, the present invention is used in the process of power transmission to achieve an unloading effect in the state of instantaneous overload operation, protecting the transmission shaft from damage due to excessive power transmission. The active disk is connected to the power source (such as a motor) as the power input end; the driven disk is connected to the transmission device as the power input end. The active and driven are connected by magnetism, and the magnet blocks with the same poles repel each other, which is regarded as a soft connection, so it will not cause wear of the rotating device. The present invention can realize an odd-even combination of equidistant string groups, and then different numbers and groups of active disk magnets 4 and driven disk magnets 5 can be installed according to actual needs, thereby improving the adaptability of the magnetic coupler to complex working conditions. The present invention can isolate external magnetic field interference by providing an outer shell cover 3; and can isolate the internal and external environments of the magnetic coupler by providing a sealing ring 12, thereby playing a role in dust and moisture prevention.

[0029] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetic coupler, characterized in that: include: A driving disk (1) for connecting to a power source; A driven disc (2) is located inside the driving disc (1) and is used to transmit power; An outer shell (3), located at one end of the active disk (1), and used to isolate external magnetic field interference; Active disk magnet (4), arranged in the active disk (1); The driven disk magnet (5) is arranged in the driven disk (2) and is located on the side of the active disk magnet (4), and is used in conjunction with the active disk magnet (4) to achieve a soft connection between the active disk (1) and the driven disk (2).

2. The magnetic coupler according to claim 1, characterized in that A plurality of first mounting holes (6) are provided inside the active disk (1), and the active disk magnetic steel (4) is provided in the first mounting holes (6).

3. The magnetic coupler according to claim 2, characterized in that A plurality of second mounting holes (7) are provided inside the driven disk (2), and the driven disk magnets (5) are provided in the second mounting holes (7).

4. The magnetic coupler according to claim 3, characterized in that The active disk magnet (4) and the first mounting hole (6), as well as the driven disk magnet (5) and the second mounting hole (7), are all clamped together; the active disk magnet (4) and the driven disk magnet (5) are both arranged in a ring shape along the center of the driven disk (2).

5. The magnetic coupler according to claim 1, wherein: A plurality of annular mounting grooves (8) are provided inside the active disk (1), and the driven disk (2) is provided in the annular mounting grooves (8).

6. The magnetic coupler according to claim 1, characterized in that The center positions of the driven disks (2) are connected via a connecting shaft (9), and a driven disk spacer ring (10) is sleeved between two adjacent driven disks (2) and located on the outside of the connecting shaft (9).

7. The magnetic coupler according to claim 1, characterized in that The number of the driven discs (2) is at least four groups.

8. The magnetic coupler according to claim 1, wherein: A plurality of weight-reducing holes (11) are provided inside the driven disc (2), and the weight-reducing holes (11) are arranged in a ring shape along the center of the driven disc (2).

9. The magnetic coupler according to claim 1, wherein: The outer shell (3) and the active disk (1) are sealed.

10. The magnetic coupling according to claim 9, characterized in that A sealing ring (12) is provided inside the outer shell cover (3), and one end of the sealing ring (12) away from the inner wall of the outer shell cover (3) extends to the side wall of the active disk (1).

Images