A hydraulic permanent magnetic coupler

Abstract

The present application discloses a hydraulic permanent magnet coupler. The hydraulic permanent magnet coupler includes: a coupler body; a hydraulic hub, the hydraulic hub includes an oil storage chamber, an oil inlet hole, an oil outlet hole and an outer cylindrical protrusion, the oil inlet hole and the oil outlet hole are arranged on the outer cylindrical protrusion, the oil inlet hole and the oil outlet hole are respectively connected to the oil storage chamber, and the hydraulic hub is connected to the coupler body. The coupler body of the hydraulic permanent magnet coupler of the present application is connected to the hydraulic hub. Compared with the tensioning disk of the prior art, the hydraulic hub has a stronger ability to prevent axial movement. Therefore, when in use, the coupler body will not produce axial movement, thereby preventing the coupler body from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of couplings, and in particular to a hydraulic permanent magnet coupling. Background Art

[0002] As an emerging product, permanent magnet coupler relies on magnetic force for transmission. Due to its non-contact transmission characteristics and no mechanical wear, it is gradually replacing traditional contact transmission products. A permanent magnet coupler generally consists of two parts: a conductor disk and a magnet disk, which are respectively connected to the input shaft and / or the output shaft to connect the output shaft and the input shaft of two devices. When the permanent magnet coupler is connected to the installation shaft, in order to facilitate the connection and installation, a locking sleeve (or "locking disk") is generally used. However, the locking sleeve has the following disadvantages: First, the contact area is short, resulting in a large contact stress on the shaft surface; second, the expansion sleeve relies on the conical surface for expansion, and stress concentration, plastic deformation or rust are prone to occur between the conical surfaces, resulting in inability to disassemble; third, the expansion sleeve is generally installed at the end of the shaft, which can easily cause excessive bending moment on the installation shaft, resulting in adverse consequences such as heating of the bearings of the connected equipment and damage to the seals; fourth, the expansion sleeve conical surface expansion relies on bolt force for locking. During installation, it needs to be tightened symmetrically and force is gradually applied. It needs to be repeated many times to tighten, and the installation time is long, which requires high requirements for the staff; fifth, the bolts are exposed outside and are prone to rust, resulting in inability to disassemble.

[0003] The existing technology generally uses a locking disk connection or a split hub connection; the locking disk has a short axial locking dimension and relies on a strong surface contact pressure to transmit torque, resulting in a large surface stress and prone to axial movement; the split hub relies on bolt force to clamp the hub on the mounting shaft, and due to the limited bolt force, the clamping force between the hub and the shaft is also limited, which is more prone to axial movement than the locking disk structure; the axial movement of these two structures will cause the coupler conductor disk to axially contact the magnet disk, thereby causing equipment damage.

[0004] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above difficulties of the prior art. Summary of the invention

[0005] An object of the present invention is to provide a hydraulic permanent magnet coupler to overcome or at least alleviate at least one of the above-mentioned defects of the prior art.

[0006] One aspect of the present invention provides a hydraulic permanent magnet coupler, the hydraulic permanent magnet coupler comprising: a coupler body;

[0007] A hydraulic hub, wherein the hydraulic hub is provided with an oil storage cavity, an oil inlet hole, an oil outlet hole and an outer circular protrusion, wherein the oil inlet hole and the oil outlet hole are arranged on the outer circular protrusion, and the oil inlet hole and the oil outlet hole are respectively communicated with the oil storage cavity, the hydraulic hub is connected to the coupler body, and the hydraulic hub is provided with a through hole for the shaft to be installed to pass through.

[0008] Optionally, the coupler body includes a conductor disk and a magnetic disk; wherein,

[0009] The conductor disk is connected to one of the hydraulic hubs and / or the magnet disk is connected to one of the hydraulic hubs.

[0010] Optionally, the hydraulic permanent magnet coupler further includes an intermediate piece, the conductor disc is connected to one of the hydraulic hubs via the intermediate piece and / or the magnet disc is connected to one of the hydraulic hubs via the intermediate piece.

[0011] Optionally, at least two outer circular protrusions are provided on the outer wall of the hydraulic hub, at least one of which is provided at one end of the coupling hub, and the outer circular protrusion is called the first outer circular protrusion, which is used to connect with one of the conductor disk, the magnet disk or the intermediate piece.

[0012] Optionally, except the first outer circular protrusion, at least one of the other outer circular protrusions is arranged at the other end of the coupling hub and / or, except the first outer circular protrusion, at least one of the other outer circular protrusions is arranged in the middle of the coupling hub.

[0013] Optionally, an outer wall groove is provided at a connection position between the outer wall of the coupling hub and the first outer circular protrusion; the outer wall groove is recessed in a direction toward a center line of the coupling hub.

[0014] Optionally, there are multiple outer circular protrusions on the other end of the coupling hub, and each of the outer circular protrusions is evenly distributed in the circumferential direction of the coupling hub; and one outer circular protrusion is provided with an oil inlet hole or an oil outlet hole.

[0015] Optionally, the first outer circular protrusion is an annular outer circular protrusion, which is circumferentially arranged around the coupling hub, and the first outer circular protrusion is provided with a groove recessed from the outer wall of the first outer circular protrusion toward the inner wall of the first outer circular protrusion.

[0016] Optionally, the first outer circular protrusion is provided with a conical pin hole and / or a cylindrical pin hole; wherein,

[0017] The tapered pin hole is used to cooperate with the cylindrical hole on the coupler body to allow a positioning pin to pass through;

[0018] The cylindrical pin hole is used to cooperate with the tapered pin hole on the coupler body to allow a positioning pin to pass through.

[0019] Optionally, the hydraulic hub comprises an outer sleeve and an inner sleeve, and the oil storage cavity is provided between the outer sleeve and the inner sleeve;

[0020] A radial hoisting hole is arranged in the middle of the outer sleeve, and the central axis of the radial hoisting hole passes through the center of gravity of the hydraulic hub.

[0021] Beneficial Effects

[0022] The coupler body of the hydraulic permanent magnet coupler of the present application is connected to the hydraulic hub. Compared with the tensioning disk of the prior art, the hydraulic hub has a stronger ability to prevent axial movement. Therefore, when in use, the coupler body will not produce axial movement, thereby preventing damage to the coupler body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the hydraulic permanent magnet coupler of the first embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the structure of a hydraulic permanent magnet coupler according to the second embodiment of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the hydraulic hub in the hydraulic permanent magnet coupler of the first embodiment of the present invention.

[0026] Figure 4 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a second embodiment of the present invention.

[0027] Figure 5 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a third embodiment of the present invention.

[0028] Figure 6 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a fourth embodiment of the present invention.

[0029] Figure 7 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a fifth embodiment of the present invention.

[0030] Figure 8 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a sixth embodiment of the present invention.

[0031] Fig. 9 It is a schematic structural diagram of the hydraulic hub in the hydraulic permanent magnet coupler of the seventh embodiment of the present invention.

[0032] Fig.10 It is a schematic structural diagram of the hydraulic hub in the hydraulic permanent magnet coupler of the eighth embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Hydraulic hub; 2. Outer sleeve; 3. Outer circle protrusion; 4. Outer wall groove; 5. Oil inlet hole; 6. Inner sleeve; 7. Oil storage chamber; 9. Radial lifting hole; 10. Oil outlet hole; 11. Coupler body; 111. Conductor disk; 112. Magnetic disk; 12. Intermediate piece; 31. Cylindrical pin hole; 113. Conical pin hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0037] Figure 1 It is a structural schematic diagram of the hydraulic permanent magnet coupler of the first embodiment of the present invention. Figure 2 Schematic diagram of the structure of a hydraulic permanent magnet coupler according to the second embodiment of the present invention. Figure 3 It is a schematic structural diagram of the hydraulic hub in the hydraulic permanent magnet coupler of the first embodiment of the present invention. Figure 4 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a second embodiment of the present invention. Figure 5 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a third embodiment of the present invention. Figure 6 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a fourth embodiment of the present invention. Figure 7 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a fifth embodiment of the present invention. Figure 8 It is a schematic structural diagram of a hydraulic hub in a hydraulic permanent magnet coupler according to a sixth embodiment of the present invention.

[0038] like Figures 1 to 10The hydraulic permanent magnet coupler shown includes a coupler body 11 and a hydraulic hub 1. The hydraulic hub 1 includes an oil storage chamber 7, an oil inlet hole 5, an oil outlet hole 10 and an outer circular protrusion 3. The oil inlet hole 5 and the oil outlet hole 10 are arranged on the outer circular protrusion 3. The oil inlet hole 5 and the oil outlet hole 10 are respectively connected to the oil storage chamber 7. The hydraulic hub 1 is connected to the coupler body 11.

[0039] The coupler body of the hydraulic permanent magnet coupler of the present application is connected to the hydraulic hub. Compared with the tensioning disk of the prior art, the hydraulic hub has a stronger ability to prevent axial movement. Therefore, when in use, the coupler body will not produce axial movement, thereby preventing damage to the coupler body.

[0040] See also Figure 1 In this embodiment, the coupler body 11 includes a conductor disk 111 and a magnet disk 112 ; wherein the conductor disk 111 is connected to a hydraulic hub 1 and the magnet disk 112 is connected to a hydraulic hub 1 .

[0041] See also Figure 1 In this embodiment, there are two hydraulic hubs 1, one connected to the conductor disk and the other connected to the magnet disk.

[0042] In other embodiments, there is one hydraulic hub connected to the conductor disk or the magnet disk, and the other of the conductor disk and the magnet disk is connected to other transmission components. It can be understood that the transmission component can be a hub or other devices.

[0043] See also Figure 2 In this embodiment, the hydraulic permanent magnet coupler further includes an intermediate piece 12, and the magnet disk 112 is connected to a hydraulic hub 1 through the intermediate piece.

[0044] In other embodiments, the magnet disk 112 is connected to a hydraulic hub 1 through an intermediate piece and the conductor disk 111 is connected to a hydraulic hub 1. Alternatively, the conductor disk 111 is connected to a hydraulic hub 1.

[0045] See also Figures 1 to 8 In this embodiment, at least two outer circular protrusions 3 are arranged on the outer wall of the hydraulic hub 1, wherein at least one outer circular protrusion 3 is arranged at one end of the hydraulic hub 1, and the outer circular protrusion 3 is called the first outer circular protrusion, which is used to connect with one of the conductor disk, the magnet disk or the intermediate piece.

[0046] In the above-mentioned embodiment, the connection status of the hydraulic hub 1 is used to determine to which the first outer circular protrusion is connected.

[0047] For example, when the conductor disc 111 is connected to a hydraulic hub 1 , the first outer circumferential protrusion is connected to the conductor disc.

[0048] When the magnet disk 112 is connected to a hydraulic hub 1 , the first outer circumferential protrusion is connected to the magnet disk 112 .

[0049] When the conductor disc 111 is connected to a hydraulic hub 1 via the intermediate piece 12 , the first outer circumferential protrusion is connected to the intermediate piece 12 .

[0050] In this embodiment, the first outer circular protrusion is arranged at one end of the hydraulic hub. It can be understood that the first outer circular protrusion can be arranged on the end face of the end, or at a position with a certain distance from the end face, for example, 1 cm, 2 cm, etc.

[0051] In this embodiment, the first outer circular protrusion is an annular outer circular protrusion, which is circumferentially arranged around the outer wall of the hydraulic hub.

[0052] In one embodiment, there are multiple first outer circular protrusions, and each first outer circular protrusion is evenly arranged around the outer wall of the hydraulic hub in the circumferential direction.

[0053] In an embodiment where the first outer circular protrusion is an annular outer circular protrusion, a groove is provided on the first outer circular protrusion, and the groove is recessed from the outer wall of the first outer circular protrusion toward the inner wall of the first outer circular protrusion.

[0054] It is understandable that the number of grooves can be set as needed, such as 1, 2, or other numbers.

[0055] It is understandable that the degree of depression of the groove can be set as required. For example, the depression depth of the groove can be half, three quarters or other degrees of the thickness of the outer circular protrusion.

[0056] See also Figure 3 In this embodiment, a cylindrical pin hole 31 is provided on the first outer circular protrusion; a conical pin hole 113 is provided on the coupler body; wherein the aperture of the conical pin hole 113 is: when the first outer circular protrusion is connected to the coupler body, the aperture of the conical pin hole 113 gradually decreases from the end of the conical pin hole close to the first outer circular protrusion to the end away from the outer circular protrusion;

[0057] A cylindrical pin hole 31 is used to cooperate with a tapered pin hole 113 on the coupler body to allow a positioning pin to pass through.

[0058] In the present application, the coupler body includes a conductor disk and a magnet disk. When the conductor disk is connected to the first outer circular protrusion, a tapered pin hole is provided on the conductor disk.

[0059] When the magnetic disk is connected to the first outer circular protrusion, a tapered pin hole is arranged on the magnetic disk.

[0060] When the middle piece is connected to the first outer circular protrusion, a tapered pin hole is arranged on the middle piece.

[0061] During the connection process, it is possible that the hydraulic hub is not aligned with the conductor disk, the magnet disk or one of the intermediate parts. In this case, the positioning pin is passed through the cylindrical pin hole and the tapered pin hole in sequence, and guided by the inner wall of the pin hole, so that the two are gradually aligned during the connection process.

[0062] See also Figures 2 to 5 In this embodiment, except for the first outer circular protrusion, at least one of the other outer circular protrusions is arranged at the other end of the hydraulic hub 1.

[0063] In this embodiment, the first outer circular protrusion is arranged at one end of the hydraulic hub, and the other outer circular protrusion is arranged at the other end of the hydraulic hub.

[0064] For the convenience of description, the outer circular protrusion arranged at the other end of the hydraulic hub is referred to as the second outer circular protrusion.

[0065] In this embodiment, the second outer circular protrusion is an annular protrusion, which is arranged around the circumference of the hydraulic hub.

[0066] In one embodiment, there are multiple second outer circular protrusions, and each second outer circular protrusion is evenly distributed in the circumferential direction of the hydraulic hub.

[0067] In one embodiment, the second outer circular protrusion is an annular structure, and a groove is arranged on the second outer circular protrusion, and the groove is recessed from the outer wall of the second outer circular protrusion toward the inner wall.

[0068] The number of grooves can be set as required, for example, the number of grooves can be one, two, three or more.

[0069] The depth of the groove can also be set according to needs.

[0070] In this embodiment, an oil inlet hole 5 or an oil outlet hole 10 is provided on the second outer circular protrusion.

[0071] See also Figure 6 as well as Figure 7 In this embodiment, except for the first outer circular protrusion, at least one of the other outer circular protrusions is arranged in the middle of the hydraulic hub 1.

[0072] For the convenience of description, the outer circular protrusion arranged in the middle is referred to as the third outer circular protrusion.

[0073] In this embodiment, the third outer circular protrusion is an annular outer circular protrusion.

[0074] In the present application, an annular protrusion is provided in the middle part. When the wheel hub of the present application is subjected to force, the middle part is most likely to deform. By providing an outer circular protrusion in the middle part, the bearing capacity of the middle part can be increased and deformation can be prevented.

[0075] See also Figure 8In this embodiment, an outer wall groove 4 is provided at the connection position between the outer wall of the hydraulic hub 1 and the first outer circular protrusion; the outer wall groove 4 is recessed in the direction of the center line of the hydraulic hub 1 .

[0076] In this embodiment, the outer wall groove includes a first section and a second section, one end of the first section is in contact with the first outer circular protrusion, and the other end of the first section is connected to one end of the second section.

[0077] In this embodiment, the first section is an arc section extending from one end to the other end and bending; the second section is a straight line section.

[0078] By adopting this structure, the torsional stress at the connection between the outer wall of the hydraulic hub 1 and the first connection structure can be reduced.

[0079] In this embodiment, the hydraulic hub includes an outer sleeve 2 and an inner sleeve 6 , and an oil storage chamber 7 is provided between the outer sleeve 2 and the inner sleeve 6 .

[0080] In this embodiment, the outer wall mentioned above is the outer wall of the outer casing 2 .

[0081] In this embodiment, an axial hole is provided on the inner sleeve for connection with the rotating shaft. When in use, the rotation of the rotating shaft can drive the hydraulic hub to rotate.

[0082] See also Figure 3 In this embodiment, a radial lifting hole 9 is provided in the middle of the outer sleeve, and the central axis of the radial lifting hole 9 passes through the center of gravity of the hydraulic hub 1.

[0083] By providing a radial lifting hole, the central axis of the radial lifting hole passes through the center of gravity of the hub. When in use, the radial lifting hole is used to install a lifting ring or other lifting tools. In this way, when lifting, it can be ensured that the axial hole of the hydraulic hub is horizontal, which is convenient for alignment with the installation axis to achieve quick installation.

[0084] Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A hydraulic permanent magnet coupler, characterized in that: The hydraulic permanent magnetic coupler comprises: Coupler body (11); A hydraulic hub (1), the hydraulic hub (1) comprising an oil storage cavity (7), an oil inlet hole (5), an oil outlet hole (10) and an outer circular protrusion (3), the oil inlet hole (5) and the oil outlet hole (10) being arranged on the outer circular protrusion (3), the oil inlet hole (5) and the oil outlet hole (10) being respectively connected to the oil storage cavity (7), and the hydraulic hub (1) being connected to the coupler body (11); The coupler body (11) comprises a conductor disk (111) and a magnetic disk (112); wherein: The conductor disk (111) is connected to one of the hydraulic hubs (1) and / or the magnet disk (112) is connected to one of the hydraulic hubs (1); The hydraulic permanent magnet coupler further comprises an intermediate piece (12), the conductor disc (111) is connected to one of the hydraulic hubs (1) via the intermediate piece (12) and / or the magnet disc (112) is connected to one of the hydraulic hubs (1) via the intermediate piece; An outer wall groove is provided at a position where the outer wall of the outer sleeve (2) is connected to the first outer circular protrusion; the outer wall groove comprises a first section and a second section, one end of the first section contacts the first outer circular protrusion, and the other end of the first section is connected to one end of the second section; The first section is an arc section extending and bending from one end to the other end; the second section is a straight line section.

2. The hydraulic permanent magnet coupler according to claim 1, characterized in that: At least two outer circular protrusions (3) are arranged on the outer wall of the hydraulic hub (1), wherein at least one outer circular protrusion (3) is arranged at one end of the hydraulic hub (1), and the outer circular protrusion (3) is called a first outer circular protrusion, and the first outer circular protrusion is used to connect with one of the conductor disk, the magnet disk or the intermediate piece.

3. The hydraulic permanent magnetic coupler according to claim 2, characterized in that: In addition to the first outer circular protrusion, at least one of the other outer circular protrusions is arranged at the other end of the hydraulic hub (1) and / or, in addition to the first outer circular protrusion, at least one of the other outer circular protrusions is arranged in the middle of the hydraulic hub (1).

4. The hydraulic permanent magnet coupler according to claim 2, characterized in that: An outer wall groove (4) is provided at the connection position between the outer wall of the hydraulic hub (1) and the first outer circular protrusion; the outer wall groove (4) is recessed in the direction of the center line of the hydraulic hub (1).

5. The hydraulic permanent magnetic coupler according to claim 3, characterized in that: There are a plurality of outer circular protrusions (3) on the other end of the hydraulic hub (1), and each of the outer circular protrusions (3) is evenly distributed in the circumferential direction of the hydraulic hub (1); and one outer circular protrusion (3) is provided with an oil inlet hole (5) or an oil outlet hole (10).

6. The hydraulic permanent magnetic coupler according to claim 2, characterized in that: The first outer circular protrusion is an annular outer circular protrusion which is arranged circumferentially around the hydraulic hub (1); the first outer circular protrusion is provided with a groove which is recessed from the outer wall of the first outer circular protrusion towards the inner wall of the first outer circular protrusion.

7. The hydraulic permanent magnetic coupler according to claim 6, characterized in that: The first outer circular protrusion is provided with a cylindrical pin hole (31); the coupler body is provided with a tapered pin hole (113); wherein, The aperture of the tapered pin hole (113) is such that, when the first outer circular protrusion is connected to the coupler body, the aperture gradually decreases from one end of the tapered pin hole close to the first outer circular protrusion to one end away from the outer circular protrusion; one of the cylindrical pin holes (31) is used in conjunction with a tapered pin hole (113) on the coupler body to allow a positioning pin to pass through.

8. The hydraulic permanent magnetic coupler according to any one of claims 1 to 7, characterized in that: The hydraulic wheel hub comprises an outer sleeve (2) and an inner sleeve (6), and the oil storage chamber (7) is provided between the outer sleeve (2) and the inner sleeve (6); A radial hoisting hole (9) is provided in the middle of the outer sleeve, and the central axis of the radial hoisting hole (9) passes through the center of gravity of the hydraulic hub (1).

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