Magnetic coupling and operating equipment

Abstract

The utility model provides a magnetic coupling and operation equipment, and relates to the field of couplings. The magnetic coupling comprises a driving shaft and a driven shaft, the driving shaft comprises a first shell and a first magnet, the first shell is provided with first meshing teeth, and the first magnet is arranged in the first shell; the driven shaft comprises a second shell, a third shell and a second magnet, the second magnet is arranged in the third shell, the third shell is arranged in the second shell in a sliding mode in the axis direction of the driven shaft, the third shell is provided with second meshing teeth, the first shell is arranged in the third shell, and when the third shell slides in place, the second magnet is attracted with the first magnet, and the second magnet is attracted with the second magnet. The second meshing teeth are in meshing transmission with the first meshing teeth; through the attraction effect of the first magnet and the second magnet, the basic function of torque transmission of the coupler is achieved, torque transmission can be cut off, the coupler and subsequent machines are protected, and the effect of a safety device is achieved.

Description

Technical Field

[0001] The present application relates to the field of couplings, and in particular, to a magnetic coupling and operating equipment. Background Art

[0002] The coupling is mainly used to transmit torque. When the machine speed is too fast, the coupling cannot cut off the transmission of torque, causing overload damage to the coupling and subsequent machine. It cannot serve as a safety device and has a short service life. Utility Model Content

[0003] The purpose of this application is to provide a magnetic coupling and operating equipment. When the machine speed is too fast, the application can timely cut off the transmission of torque, protect the coupling and subsequent machines, act as a safety device, and increase the service life of the coupling.

[0004] In a first aspect, the utility model provides a magnetic coupling, the magnetic coupling comprising:

[0005] The driving shaft comprises a first shell and a first magnet, wherein the first shell is provided with a first meshing tooth, and the first magnet is installed in the first shell;

[0006] The driven shaft includes a second shell, a third shell and a second magnet. The second magnet is installed in the third shell. The third shell is slidably arranged in the second shell along the axial direction of the driven shaft, and the third shell is provided with second meshing teeth. The first shell is placed in the third shell. When the third shell slides into place, the second magnet is attracted to the first magnet, and the second meshing teeth are meshed with the first meshing teeth for transmission.

[0007] In an optional embodiment, the second shell is provided with a key slot, and the third shell is provided with a flat key, and the flat key slides relative to the key slot between a first position and a second position, and in the first position, the second magnet is attracted to the first magnet, and in the second position, the second magnet is not attracted to the first magnet.

[0008] In an optional embodiment, the second shell and the third shell are both annular structures, the plurality of key slots are arranged in an annular array about the axis of the second shell, and the plurality of flat keys are arranged in an annular array about the axis of the third shell.

[0009] In an optional embodiment, each of the key slots is open toward one end of the driving shaft.

[0010] In an optional embodiment, the driving shaft further includes a gasket, which is installed between the first magnet and the bottom wall of the first shell, and the gasket has a plurality of preset thicknesses.

[0011] In an optional embodiment, the first shell, the first magnet and the gasket are fixedly connected by a first fastener.

[0012] In an optional embodiment, the second magnet is fixedly connected to the third shell via a second fastener.

[0013] In an optional embodiment, the first shell includes a first connecting part and a second connecting part, the first connecting part is fixedly connected to the second connecting part, and the first connecting part and the second connecting part define a first installation position, the first connecting part is provided with the first meshing tooth, and the first magnet is installed on the first connecting part.

[0014] In an optional embodiment, the second shell includes a third connecting portion and a fourth connecting portion, the third connecting portion is fixedly connected to the fourth connecting portion, and the third connecting portion and the fourth connecting portion define a second installation position.

[0015] In a second aspect, the utility model provides a running device, which includes a first object, a second object, and the magnetic coupling described in any one of the aforementioned embodiments.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The present application realizes the basic function of the coupling to transmit torque by the attraction between the first magnet and the second magnet, with the driving shaft driving the driven shaft. When the driving shaft of the present application rotates too fast, the first meshing teeth will separate from the second meshing teeth, overcoming the attraction between the first magnet and the second magnet, thereby achieving the purpose of cutting off the torque transmission, protecting the coupling and subsequent machines, acting as a safety device, and increasing the service life of the coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 shows a schematic diagram of the assembly of a magnetic coupling in some embodiments;

[0020] Figure 2 shows an exploded schematic diagram of a magnetic coupling in some embodiments;

[0021] Figure 3 shows a cross-sectional schematic diagram of a magnetic coupling in some embodiments;

[0022] Figure 4 A flow chart showing the installation principle of the operating equipment in some embodiments is shown.

[0023] Description of main component symbols:

[0024] 100-driving shaft; 110-first housing; 111-first connecting part; 1111-first meshing tooth; 112-second connecting part; 113-first mounting position; 120-first magnet; 130-gasket; 140-first fastener; 200-driven shaft; 210-second housing; 211-third connecting part; 2111-keyway; 212-fourth connecting part; 213-second mounting position; 220-third housing; 221-flat key; 222-second meshing tooth; 230-second magnet; 240-second fastener. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Embodiment 1

[0031] See also Figure 1 , Figure 2 and Figure 3 This embodiment provides a magnetic coupling. Specifically, the magnetic coupling includes a driving shaft 100 and a driven shaft 200.

[0032] The driving shaft 100 includes a first housing 110 and a first magnet 120. The first housing 110 is provided with a first meshing tooth 1111. The first magnet 120 is installed in the first housing 110. In this embodiment, the end of the first magnet 120 close to the first meshing tooth 1111 can be set as an N pole.

[0033] The first shell 110 includes a first connecting portion 111 and a second connecting portion 112 , the first connecting portion 111 and the second connecting portion 112 are fixedly connected, and the first connecting portion 111 and the second connecting portion 112 define a first mounting position 113 , a first meshing tooth 1111 is provided at one end of the first connecting portion 111 , and the first magnet 120 is mounted on the first connecting portion 111 .

[0034] The driven shaft 200 includes a second shell 210, a third shell 220 and a second magnet 230. The second magnet 230 is installed in the third shell 220. The third shell 220 is slidably arranged in the second shell 210 along the axial direction of the driven shaft 200. Specifically, the second shell 210 is provided with a key slot 2111, and the third shell 220 is provided with a flat key 221. The flat key 221 slides relative to the key slot 2111 between a first position and a second position. In the first position, the second magnet 230 is attracted to the first magnet 120, and in the second position, the second magnet 230 is not attracted to the first magnet 120.

[0035] The second shell 210 includes a third connection portion 211 and a fourth connection portion 212 . The third connection portion 211 and the fourth connection portion 212 are fixedly connected to each other, and the third connection portion 211 and the fourth connection portion 212 define a second installation position 213 . The third connection portion 211 is provided with the keyway 2111 mentioned above.

[0036] The third shell 220 is provided with a second meshing tooth 222, and the first shell 110 is placed in the third shell 220. When the third shell 220 slides into place (i.e. the flat key 221 slides to the first position relative to the keyway 2111), the second magnet 230 is attracted to the first magnet 120, and the second meshing tooth 222 is meshed with the first meshing tooth 1111 for transmission.

[0037] According to the principle of opposite poles attract, since the present embodiment sets the end of the first magnet 120 close to the first meshing tooth 1111 as the N pole, correspondingly, the present embodiment can also set the end of the second magnet 230 close to the first magnet 120 as the S pole, thereby achieving attraction between the first magnet 120 and the second magnet 230.

[0038] Under normal operation, due to the attraction between the first magnet 120 and the second magnet 230 , the flat key 221 slides to the first position relative to the key slot 2111 , and the first meshing tooth 1111 and the second meshing tooth 222 mesh to transmit the torque of the driving shaft 100 to the driven shaft 200 .

[0039] When the rotation speed of the driving shaft 100 is too fast, the rotation speed of the first meshing tooth 1111 is too fast, the first meshing tooth 1111 slips relative to the second meshing tooth 222, and the second meshing tooth 222 is pushed away due to the inclination of the first meshing tooth 1111, and the flat key 221 slides to the second position relative to the keyway 2111, and the first magnet 120 and the second magnet 230 are not attracted, thereby cutting off the torque transmission of the driving shaft 100.

[0040] It is understandable that after the torque transmission of the driving shaft 100 is cut off, if the driving shaft 100 returns to normal speed, the magnetic coupling will resume torque transmission and has the function of self-recovery from overload.

[0041] Embodiment 2

[0042] See also Figure 1 and Figure 2 Based on the first embodiment, this embodiment is improved in that the second shell 210 and the third shell 220 are both annular structures, a plurality of key slots 2111 are arranged in an annular array with the axis of the second shell 210, and a plurality of flat keys 221 are arranged in an annular array with the axis of the third shell 220.

[0043] Each key slot 2111 and each flat key 221 form a set of sliding structures. Therefore, this embodiment has multiple sets of sliding structures, which can improve the sliding stability of the magnetic coupling and prevent the third housing 220 from tilting relative to the second housing 210.

[0044] Furthermore, each key slot 2111 is opened toward one end of the driving shaft 100 , and each flat key 221 is inserted into the key slot 2111 from the corresponding opening, which is convenient for installation and disassembly and simplifies the sliding structure.

[0045] Embodiment 3

[0046] See also Figure 1 , Figure 2 and Figure 3 Based on the above embodiment, the present embodiment is improved in that the driving shaft 100 further includes a gasket 130, the gasket 130 is installed between the first magnet 120 and the bottom wall of the first shell 110, and the gasket 130 has a plurality of preset thicknesses.

[0047] For example, the gasket 130 has different thickness sizes such as a first preset thickness, a second preset thickness, and a third preset thickness. The first preset thickness, the second preset thickness, and the third preset thickness increase in sequence.

[0048] The first housing 110, the first magnet 120 and the gasket 130 are fixedly connected by the first fastener 140. After removing the first fastener 140, the operator can take out the first magnet 120 and the gasket 130, and then replace the gasket 130 with the first preset thickness with the gasket 130 with the second preset thickness.

[0049] It is understandable that when a thicker gasket 130 is replaced, the distance between the first magnet 120 and the second magnet 230 is reduced, so the attraction force between the first magnet 120 and the second magnet 230 is enhanced, thereby enhancing the meshing force of the first meshing tooth 1111 and the second meshing tooth 222, thereby increasing the transmission torque value of the magnetic coupling.

[0050] On the contrary, after replacing the gasket 130 with the second preset thickness with the gasket 130 with the first preset thickness, the distance between the first magnet 120 and the second magnet 230 increases, so the attraction force between the first magnet 120 and the second magnet 230 weakens, thereby weakening the meshing force between the first meshing tooth 1111 and the second meshing tooth 222, thereby reducing the transmission torque value of the magnetic coupling.

[0051] In this embodiment, the maximum torque transmission of the magnetic coupling can be controlled by replacing the gasket 130 with different thicknesses or removing the gasket 130. When the maximum torque is exceeded, the first meshing teeth 1111 and the second meshing teeth 222 of the magnetic coupling are separated, acting as a safety device.

[0052] The second magnet 230 is fixedly connected to the third housing 220 by the second fastener 240. The second magnet 230 can be taken out from the third housing 220 by the second fastener 240. The first fastener 140 and the second fastener 240 realize the replaceable function of the first magnet 120 and the second magnet 230. When the first magnet 120 or the second magnet 230 loses its magnetic force, it is convenient to maintain the magnetic coupling.

[0053] In this embodiment, the first fastener 140 and the second fastener 240 may be bolts.

[0054] Embodiment 4

[0055] Please refer to the figure, this embodiment provides a running device, including a first object, a second object and the magnetic coupling in the above embodiment. The first object is an active running machine, and the first object is provided with a first rotating shaft, the second object is a passive running machine, and the second object is provided with a second rotating shaft, the first rotating shaft is installed at the first mounting position 113 of the magnetic coupling, and the second rotating shaft is installed at the second mounting position 213 of the magnetic coupling, and the magnetic coupling is driven to rotate by the first rotating shaft, thereby realizing the rotation of the second rotating shaft.

[0056] See also Figures 2 to 4 Based on the above content, this embodiment further explains the installation principle of the operating equipment as follows:

[0057] S100. The gasket 130 and the first magnet 120 are sequentially placed in the cavity of the first connecting portion 111, and the gasket 130 and the first magnet 120 are fixed in the cavity by the first fastener 140;

[0058] S200. The second magnet 230 is fixed in the third housing 220 by the second fastener 240;

[0059] S300. Place the third housing 220 in the third connecting portion 211, and ensure that the flat key 221 of the third housing 220 cooperates with the keyway 2111 of the third connecting portion 211;

[0060] S400. Insert the assembled first connecting portion 111 into the third housing 220 until the first meshing teeth 1111 of the first connecting portion 111 mesh with the second meshing teeth 222 of the third housing 220, and the first magnet 120 and the second magnet 230 are attracted;

[0061] S500. Place the first rotating shaft on the first mounting position 113, and then fix the second connecting portion 112 to the first connecting portion 111 by bolts;

[0062] S600. Place the second rotating shaft on the second installation position 213, and then fix the fourth connecting part 212 and the third connecting part 211 by bolts.

[0063] Since the magnetic coupling in this embodiment has an overload protection design, it can quickly cut off the transmission of torque when the magnetic coupling is overloaded, thereby providing overload protection for the magnetic coupling and the second object and improving the service life.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A magnetic coupling, characterized in that: include: The driving shaft comprises a first shell and a first magnet, wherein the first shell is provided with a first meshing tooth, and the first magnet is installed in the first shell; The driven shaft includes a second shell, a third shell and a second magnet. The second magnet is installed in the third shell. The third shell is slidably arranged in the second shell along the axial direction of the driven shaft, and the third shell is provided with second meshing teeth. The first shell is placed in the third shell. When the third shell slides into place, the second magnet is attracted to the first magnet, and the second meshing teeth are meshed with the first meshing teeth for transmission.

2. The magnetic coupling according to claim 1, characterized in that: The second shell is provided with a key slot, and the third shell is provided with a flat key. The flat key slides relative to the key slot between a first position and a second position. In the first position, the second magnet is attracted to the first magnet, and in the second position, the second magnet is not attracted to the first magnet.

3. The magnetic coupling according to claim 2, characterized in that: The second shell and the third shell are both annular structures, the plurality of key slots are arranged in an annular array with the axis of the second shell, and the plurality of flat keys are arranged in an annular array with the axis of the third shell.

4. The magnetic coupling according to claim 3, characterized in that: Each of the key slots is open toward one end of the driving shaft.

5. The magnetic coupling according to any one of claims 1 to 4, characterized in that: The driving shaft further includes a gasket, which is installed between the first magnet and the bottom wall of the first shell, and has a plurality of preset thicknesses.

6. The magnetic coupling according to claim 5, characterized in that: The first housing, the first magnet and the gasket are fixedly connected by a first fastener.

7. The magnetic coupling according to any one of claims 1 to 4, characterized in that: The second magnet is fixedly connected to the third shell via a second fastener.

8. The magnetic coupling according to any one of claims 1 to 4, characterized in that: The first shell includes a first connecting part and a second connecting part, the first connecting part is fixedly connected to the second connecting part, and the first connecting part and the second connecting part define a first installation position, the first connecting part is provided with the first meshing tooth, and the first magnet is installed on the first connecting part.

9. The magnetic coupling according to any one of claims 1 to 4, characterized in that: The second shell includes a third connecting portion and a fourth connecting portion, the third connecting portion is fixedly connected to the fourth connecting portion, and the third connecting portion and the fourth connecting portion define a second installation position.

10. A running device, characterized in that: The invention comprises a first object, a second object and the magnetic coupling according to any one of claims 1 to 9.

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