Novel connection transmission device of permanent magnet coupler

Abstract

The utility model belongs to the technical field of permanent magnet couplers, and particularly relates to a novel connection transmission device of a permanent magnet coupler, which comprises a support, a driving shaft and a driven shaft, the driving shaft is rotatably arranged on the support, and one end of the driven shaft is provided with a circular groove; the driving disc group is fixedly mounted on the driving shaft; the driven disc group is fixedly mounted on the driven shaft; and the flexible connector is arranged between the driving shaft and the driven shaft. The practical permanent magnet adopts a sectional structural design, and an isolating ring made of a non-magnetic material is arranged between every two sections of permanent magnets. According to the design, the magnetic flux between the adjacent permanent magnet sections is obviously blocked, and the magnetic flux is prevented from forming a closed loop in the permanent magnet, so that the eddy current loss is obviously reduced. The reduction of the eddy current loss not only improves the energy conversion efficiency, but also helps to maintain the stability of the permanent magnet, and prolongs the service life of the equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnetic coupler, and specifically relates to a novel connection transmission device of a permanent magnetic coupler. Background Art

[0002] Permanent magnetic coupler, as a revolutionary work in the field of contemporary mechanical transmission, its non-contact magnetic field torque transmission method indicates its broad application prospects. This device has won wide attention in the industry with its high efficiency, low mechanical loss, and excellent characteristics of soft start and soft stop.

[0003] However, during high-speed operation, traditional permanent magnet couplers may be affected by eddy current effects and heat accumulation, which may lead to reduced efficiency and degradation of permanent magnet performance, thus affecting their transmission efficiency. In addition, existing permanent magnet couplers still have certain limitations in terms of transmission efficiency, stability, and installation and maintenance. Specifically, traditional permanent magnet couplers are usually installed through two independent shafts, and their transmission efficiency and stability are subject to certain limitations; at the same time, the installation and maintenance process is relatively cumbersome, affecting the overall use efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a new type of permanent magnet coupling connection transmission device, which can improve transmission efficiency, stability and service life, while reducing eddy current loss and temperature rise.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A new type of connection transmission device of a permanent magnetic coupler comprises a bracket, a driving shaft and a driven shaft, wherein the driving shaft is rotatably arranged on the bracket, wherein a circular groove is provided at one end of the driven shaft;

[0007] An active disk assembly, wherein the active disk assembly is fixedly mounted on the active shaft;

[0008] A driven disc assembly, wherein the driven disc assembly is fixedly mounted on the driven shaft;

[0009] A flexible connector is arranged between the driving shaft and the driven shaft.

[0010] In a preferred embodiment, the active disk group includes an active disk body 1, which is fixedly sleeved on the active shaft, and a connecting rod is connected to the active disk body 1 in a ring-shaped manner, and an active disk body 2 is fixedly installed on the other end of the connecting rod. An active magnet group is arranged on the side where the active disk body 1 and the active disk body 2 are close to each other, and each group of active magnet groups is composed of a plurality of small-segment active permanent magnets, and a first isolation ring is arranged between adjacent small-segment active permanent magnets, and heat dissipation fins are arranged on the active disk body 1 and the active disk body 2.

[0011] In a preferred embodiment, the driven disk group includes two driven disk bodies, which are installed on a driven shaft. A driven magnet group is arranged on one side of the driven disk body, and each driven magnet group is composed of a plurality of small segments of driven permanent magnets, and a second isolation ring is arranged between adjacent small segments of driven permanent magnets. A plurality of sliding rods are connected in a ring-shaped distribution between the two driven disk bodies, and limiting nuts are arranged at both ends of the sliding rods.

[0012] In a preferred embodiment, the flexible connector includes a hollow disc, which is fixedly connected to one end of the driving shaft. A solid disc is arranged inside the hollow disc, and compression springs are connected to both sides of the solid disc in a ring-shaped manner, and the other end of the compression spring is connected to the hollow disc, and a round rod is fixedly connected to one side of the solid disc.

[0013] In a preferred embodiment, the circular groove is matched with the round rod in size, and the inner wall of the circular groove and the outer wall of the round rod are both finely polished.

[0014] In a preferred solution, the heat dissipation fins are made of copper alloy, and the heat dissipation fins match the air gap size between the active disk group and the driven disk group.

[0015] The technical effects achieved by this utility model are:

[0016] The practical permanent magnet adopts a segmented structural design, and an isolation ring made of non-magnetic material is set between each segment of the permanent magnet. This design significantly blocks the magnetic flux between adjacent permanent magnet segments, preventing the magnetic flux from forming a closed loop inside the permanent magnet, thereby significantly reducing eddy current losses. The reduction of eddy current losses not only improves the energy conversion efficiency, but also helps to maintain the stability of the permanent magnet and extend the service life of the equipment;

[0017] The active disk body 1 and the active disk body 2 of the utility model are equipped with heat dissipation fins with excellent thermal conductivity. These heat dissipation fins can effectively reduce the heat generated by the device during operation and prevent the permanent magnet from losing magnetism due to high temperature. Good heat dissipation performance ensures that the permanent magnet coupler can operate stably in a high temperature environment, and improves the reliability and durability of the equipment;

[0018] The connection between the driving shaft and the driven shaft of the utility model adopts the design of circular groove and round rod, which ensures the precise positioning and alignment in the axial direction, and realizes the precise alignment of the driving disc group and the driven disc group in the axial direction. This design simplifies the installation process and improves the assembly accuracy. In addition, the compression spring can deform with the inclination of the solid disc, providing additional protection for the transmission system. In this situation, a short relative displacement between the driving disc group and the driven disc group is allowed, thereby releasing part of the torque and effectively preventing equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the active disk group of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the driven disc assembly of the utility model;

[0022] Figure 4 For this utility model Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 5 It is a side view of the active disk body 1 of the utility model;

[0024] Figure 6 It is a side view of the driven disc body of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Bracket; 2. Active shaft; 3. Driven shaft; 31. Circular groove; 4. Active disk assembly; 5. Driven disk assembly; 6. Flexible connector;

[0027] 41. Active disk body 1; 42. Connecting rod; 43. Active disk body 2; 44. Active permanent magnet; 45. Heat dissipation fins; 46. First isolation ring;

[0028] 51. driven disc; 52. driven permanent magnet; 53. sliding rod; 54. second isolating ring;

[0029] 61. Hollow disc; 62. Solid disc; 63. Round rod; 64. Compression spring. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present utility. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the present embodiment in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Please refer to the attached Figure 1-Figure 6 As shown, the present invention provides a novel connection transmission device of a permanent magnetic coupler, comprising:

[0035] A bracket 1, a driving shaft 2 and a driven shaft 3, wherein the driving shaft 2 is rotatably arranged on the bracket 1, wherein a circular groove 31 is formed at one end of the driven shaft 3;

[0036] The active disk group 4 is fixedly mounted on the active shaft 2;

[0037] A driven disc assembly 5, the driven disc assembly 5 is fixedly mounted on the driven shaft 3;

[0038] The flexible connector 6 is arranged between the driving shaft 2 and the driven shaft 3 .

[0039] In this embodiment, when the driving shaft 2 is driven to rotate by an external power source (such as a motor), the driving disk group 4 is synchronously driven to rotate, and the magnetic blocks on the driving disk group 4 will generate a rotating magnetic field. This magnetic field will pass through the air gap and act on the magnetic blocks of the driven disk group 5, causing it to sense the corresponding magnetic field and generate a corresponding rotational torque. Through the interaction of such magnetic fields, contactless power transmission from the driving disk group 4 to the driven disk group 5 is achieved.

[0040] One end of the flexible connector 6 is connected to the driving shaft 2, and the other end is cleverly embedded in the circular groove 31 of the driven shaft 3, ensuring smooth rotation and docking between the two shafts.

[0041] In a preferred embodiment, please refer to Figure 2 and Figure 5The active disk group 4 includes an active disk body 1 41, which is fixedly sleeved on the active shaft 2. The active disk body 1 41 is connected with a connecting rod 42 in an annular shape, and the other end of the connecting rod 42 is fixedly installed with an active disk body 2 43. The active disk body 1 41 and the active disk body 2 43 are both provided with active magnet groups on the side close to each other, and each group of active magnet groups is composed of a plurality of small-segment active permanent magnets 44, and a first isolation ring 46 is provided between adjacent small-segment active permanent magnets 44. The active disk body 1 41 and the active disk body 2 43 are both provided with heat dissipation fins 45, wherein the heat dissipation fins 45 are made of copper alloy, and the heat dissipation fins 45 match the air gap size between the active disk group 4 and the driven disk group 5.

[0042] Next, please refer to Figure 3 and 6 The driven disk group 5 includes two driven disk bodies 51, and the driven disk bodies 51 are installed on the driven shaft 3. A driven magnet group is arranged on one side of the driven disk body 51, and each driven magnet group is composed of a plurality of small-segment driven permanent magnets 52, and a second isolation ring 54 is arranged between adjacent small-segment driven permanent magnets 52. A plurality of sliding rods 53 are connected in a ring-shaped distribution between the two driven disk bodies 51, and limiting nuts are arranged at both ends of the sliding rods 53.

[0043] In this embodiment, the active disk body 1 41 is fastened to the connecting rod 42 by bolts, and the other end of the connecting rod 42 is also bolted to the active disk body 2 43. The active permanent magnet 44 and the driven permanent magnet 52 both adopt a segmented structural design, wherein an isolation ring made of non-magnetic material is provided between each segment of the permanent magnet, which is intended to significantly reduce eddy current losses.

[0044] Among them, the active permanent magnet 44 is distributed along the circumference of the active shaft 2 to form an annular structure, and the isolation ring between each permanent magnet segment ensures the segmentation of the magnetic field, thereby reducing eddy current losses. The driven permanent magnet 52 is also distributed along the circumference of the driven shaft 3, corresponding to the active permanent magnet 44. The segmentation and isolation ring settings of the driven permanent magnet 52 are consistent with the active permanent magnet 44, aiming to ensure that the magnetic field interaction between the two achieves the best effect. The isolation ring is made of non-magnetic conductive materials, such as stainless steel or polymer plastics, and its main function is to block the magnetic flux between adjacent permanent magnet segments, prevent the magnetic flux from forming a closed loop inside the permanent magnet, thereby significantly reducing eddy current losses.

[0045] Both the active shaft 2 and the driven shaft 3 are made of high-strength, low-permeability materials to minimize the impact of the magnetic field on the shaft, thereby improving the transmission efficiency. In addition, the active disk body 1 41 and the active disk body 2 43 are equipped with heat dissipation fins 45 with excellent thermal conductivity, which are intended to effectively reduce the heat generated during the operation of the device and prevent the permanent magnet from losing magnetism due to high temperature.

[0046] Secondly, please refer to Figure 4 The flexible connector 6 includes a hollow disk 61, which is fixedly connected to one end of the driving shaft 2. A solid disk 62 is arranged inside the hollow disk 61. Both sides of the solid disk 62 are connected with compression springs 64 in a ring-shaped manner, and the other end of the compression spring 64 is connected to the hollow disk 61. A round rod 63 is fixedly connected to one side of the solid disk 62.

[0047] In this embodiment, when the driving shaft 2 and the driven shaft 3 are connected, the circular groove 31 on the driven shaft 3 needs to be accurately inserted into the round rod 63. The design of the round rod 63 and the circular groove 31 ensures the precise positioning and alignment of the driving shaft 2 and the driven shaft 3 in the axial direction, thereby achieving the precise alignment of the driving disk body 1 41, the driving disk body 2 43 and the driven disk body 51 in the axial direction. During the disassembly process, the driving disk group 4 and the driven disk group 5 can be easily separated by simply pulling the driven shaft 3 directly from the round rod 63, thereby achieving convenient installation and maintenance.

[0048] When the transmission system encounters an overload or abnormal situation, the compression spring 64 will deform as the solid disc 62 tilts, providing additional protection for the transmission system. In this situation, a brief relative displacement is allowed between the active disc group 4 and the driven disc group 5, thereby releasing part of the torque and effectively preventing equipment damage. Specifically, when the transmission system is in normal working condition, the active disc group 4 and the driven disc group 5 will maintain a relatively stable speed and angle relationship. However, in actual applications, due to factors such as load changes, impacts, and vibrations, a brief, slight angle deviation or position change may occur between the two disc groups. This phenomenon is called "relative displacement."

[0049] In a preferred embodiment, please refer to Figure 4 The circular groove 31 and the round rod 63 are matched in size, and the inner wall of the circular groove 31 and the outer wall of the round rod 63 are both finely polished.

[0050] In this embodiment, in order to further improve the matching accuracy and wear resistance between the circular groove 31 and the round rod 63, cemented carbide material is used to make the inner wall of the circular groove 31 and the outer wall of the round rod 63, and is finely polished. Cemented carbide is known for its high hardness, high strength, wear resistance and high temperature resistance, which ensures that the friction coefficient between the circular groove 31 and the round rod 63 is extremely low under high load and frequent movement, thereby reducing energy loss and mechanical wear.

[0051] Considering the thermal expansion and contraction that may occur in actual applications, a certain thermal expansion gap is reserved between the circular groove 31 and the round rod 63. This design ensures that the fit between the circular groove 31 and the round rod 63 can remain tight and stable even in an environment with large temperature changes, and will not become loose or stuck due to thermal expansion and contraction.

[0052] In addition, a layer of special grease can be applied on the contact surface between the circular groove 31 and the round rod 63. This grease has excellent high temperature resistance, high pressure resistance and corrosion resistance, and can provide a long-lasting and stable lubrication effect in extreme working environments. It can effectively reduce the friction coefficient between the circular groove 31 and the round rod 63, reduce wear, and increase service life.

[0053] The working principle of this utility is:

[0054] The active disk body 1 41 is fastened to the connecting rod 42 by bolts, and the other end of the connecting rod 42 is also bolted to the active disk body 2 43. The active permanent magnet 44 and the driven permanent magnet 52 both adopt a segmented structural design, wherein an isolation ring made of non-magnetic material is provided between each segment of the permanent magnet, which is intended to significantly reduce eddy current losses.

[0055] In addition, both the active disk body 1 41 and the active disk body 2 43 are equipped with heat dissipation fins 45 with excellent thermal conductivity, which are intended to effectively reduce the heat generated during the operation of the device and prevent the permanent magnet from losing magnetism due to high temperature.

[0056] When the driving shaft 2 and the driven shaft 3 are connected, the circular groove 31 on the driven shaft 3 needs to be accurately inserted into the round rod 63. During the disassembly process, the driving disk group 4 and the driven disk group 5 can be easily separated by simply pulling the driven shaft 3 directly from the round rod 63, thereby achieving convenient installation and maintenance.

[0057] When the transmission system encounters an overload or abnormal situation, the compression spring 64 will deform with the inclination of the solid disc 62, providing additional protection for the transmission system. In this situation, a brief relative displacement between the active disc group 4 and the driven disc group 5 is allowed, thereby releasing part of the torque and effectively preventing equipment damage.

[0058] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A new type of connection transmission device of permanent magnetic coupler, characterized in that: It comprises a bracket (1), a driving shaft (2) and a driven shaft (3), wherein the driving shaft (2) is rotatably arranged on the bracket (1), wherein one end of the driven shaft (3) is provided with a circular groove (31); An active disk assembly (4), wherein the active disk assembly (4) is fixedly mounted on the active shaft (2); A driven disc assembly (5), wherein the driven disc assembly (5) is fixedly mounted on the driven shaft (3); A flexible connector (6), wherein the flexible connector (6) is arranged between the driving shaft (2) and the driven shaft (3).

2. A novel connection transmission device of a permanent magnetic coupler according to claim 1, characterized in that: The active disk group (4) comprises an active disk body 1 (41), the active disk body 1 (41) being fixedly sleeved on the active shaft (2), the active disk body 1 (41) being connected with connecting rods (42) in an annular arrangement, the other end of the connecting rod (42) being fixedly mounted with an active disk body 2 (43), the active disk body 1 (41) and the active disk body 2 (43) being arranged on the side close to each other with active magnet groups, each group of active magnet groups being composed of a plurality of small-segment active permanent magnets (44), and a first isolation ring (46) being arranged between adjacent small-segment active permanent magnets (44), and the active disk body 1 (41) and the active disk body 2 (43) being arranged with heat dissipation fins (45).

3. A novel connection transmission device of a permanent magnetic coupler according to claim 1, characterized in that: The driven disk group (5) comprises two driven disk bodies (51), the driven disk bodies (51) are mounted on the driven shaft (3), a driven magnet group is arranged on one side of the driven disk body (51), and each driven magnet group is composed of a plurality of small-segment driven permanent magnets (52), and a second isolation ring (54) is arranged between adjacent small-segment driven permanent magnets (52), a plurality of sliding rods (53) are connected in an annular arrangement between the two driven disk bodies (51), and limit nuts are arranged at both ends of the sliding rods (53).

4. A novel connection transmission device of a permanent magnetic coupler according to claim 1, characterized in that: The flexible connector (6) comprises a hollow disc (61), wherein the hollow disc (61) is fixedly connected to one end of the driving shaft (2), a solid disc (62) is arranged inside the hollow disc (61), compression springs (64) are connected in an annular manner on both sides of the solid disc (62), and the other end of the compression spring (64) is connected to the hollow disc (61), and a round rod (63) is fixedly connected to one side of the solid disc (62).

5. A new type of connection transmission device of permanent magnetic coupler according to claim 4, characterized in that: The circular groove (31) and the round rod (63) are matched in size, and the inner wall of the circular groove (31) and the outer wall of the round rod (63) are both finely polished.

6. A new type of connection transmission device of permanent magnetic coupler according to claim 2, characterized in that: The heat dissipation fins (45) are made of copper alloy, and the air gap sizes between the heat dissipation fins (45) and the active disk group (4) and the driven disk group (5) match each other.

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