Assembly method of a disc-type torque-limiting synchronous permanent magnet coupling

Abstract

The present invention relates to the field of couplings, and specifically to an assembly method for a disc-type torque-limiting synchronous permanent magnet coupling. The method comprises the following steps: first, an outer rotor component and an inner rotor component are assembled respectively, and then a dynamic balance check is performed; then, the output choke plate of the outer rotor component is removed; at the same time, at least three connecting plates are retained on the input choke plate; then, a non-magnetic pad is placed on the external connecting aluminum plate on the input choke plate; then, the inner rotor component is hoisted into a circular cavity formed by the remaining connecting plates, and then, the removed output choke plate is reinstalled on the input choke plate; then, a flexible dust ring is installed between the output choke plate and the connecting shaft; and the remaining connecting plates are installed; at this point, a permanent magnet coupling is assembled; the assembly method disclosed in the present invention can facilitate operators to assemble the synchronous permanent magnet coupling, avoid mis-assembly of the synchronous permanent magnet coupling, and thereby improve the assembly efficiency of the synchronous permanent magnet coupling.

Description

Technical Field

[0001] The invention relates to the field of couplings, in particular to an assembly method of a disc-type torque-limiting synchronous permanent magnet coupling. Background Art

[0002] The synchronous permanent magnet coupling achieves non-contact torque transmission through the force of attraction between like poles and repulsion between opposite poles between permanent magnets of the master and slave rotors, and has been widely used in the field of magnetic pumps.

[0003] The synchronous permanent magnet coupling disclosed in the Chinese invention patent (authorization announcement number: CN104038020B, CN109600016B) consists of an outer permanent magnet rotor component and an inner permanent magnet rotor component. The magnetic tiles of the outer permanent magnet rotor component are radially magnetized, and two adjacent magnetic tiles with opposite polarities are tightly installed on the inner circle of the outer steel cylinder. The magnetic tiles of the inner permanent magnet rotor component are radially magnetized, and two adjacent magnetic tiles with opposite polarities are tightly installed on the outer circle of the inner steel cylinder. There is an air gap between the inner and outer permanent magnet rotor components. The synchronous permanent magnet coupling of this structure, due to the inevitable concentricity deviation of the inner and outer rotors, causes additional radial force, which acts on the equipment shaft, causing vibration, bending and torsion of the shaft, and even breaking of the shaft. In addition, once overloaded, it will lose step, eddy current heat will be generated in the magnet, causing the magnet to demagnetize.

[0004] Therefore, in order to avoid the above technical problems, it is necessary to optimize the design of the existing coupling structure. Summary of the invention

[0005] The object of the present invention is to overcome the deficiencies of the prior art and to provide a synchronous permanent magnetic coupling structure which avoids radial force generated by magnetization.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A disc-type torque-limiting synchronous permanent magnet coupling comprises an outer rotor component and an inner rotor component; the outer rotor component comprises an input-end choke disk and an output-end choke disk; the inner rotor component comprises a connecting shaft, on which a magnetic disk mechanism is sleeved; the input-end choke disk and the output-end choke disk are distributed on both sides of the magnetic disk mechanism; the input-end choke disk and the output-end choke disk are provided with external magnetic parts; the magnetic disk mechanism comprises two permanent magnetic disks sleeved on the connecting shaft; the permanent magnetic disk is provided with an internal magnetic part; at least one plane section is provided on the connecting shaft; the permanent magnetic disk is provided with a sleeve hole matched with the connecting shaft.

[0008] The external magnetic part includes an externally connected aluminum disk arranged on the input end choke disk or the output end choke disk, and a magnet group is arranged inside the externally connected aluminum disk; the internal magnetic part includes an internally connected aluminum disk arranged on the permanent magnetic disk, and a magnet group is arranged on the internally connected aluminum disk.

[0009] The magnet group comprises a plurality of magnet blocks; the plurality of magnet blocks are sequentially and adjacently arranged in a ring shape; and the magnetic poles of adjacent magnet blocks are arranged in opposite directions.

[0010] The magnet blocks in each magnet group are distributed symmetrically.

[0011] Each of the magnet blocks includes a block body, which has a lower end face, an upper end face and a connecting side face; the lower end face is connected to the upper end face through the connecting side face; the connecting side face includes a first side face, a second side face, a third side face and a fourth side face; the first side face, the second side face, the third side face and the fourth side face are connected end to end in sequence; the lower end face is arranged opposite to the upper end face; the first side face and the third side face are arranged opposite to each other, and the second side face and the fourth side face are arranged opposite to each other; the lower end face, the first side face and the third side face are arranged opposite to each other

[0012] The first side surface is symmetrically arranged with the third side surface, the first side surface and the third side surface are inclinedly arranged; and the plane of the first side surface intersects with the plane where the second side surface is located.

[0013] The second side surface and the fourth side surface are arc-shaped surfaces.

[0014] A flexible dustproof ring is provided between the output end choke plate and the connecting shaft.

[0015] The input end choke disk and the output end choke disk are connected via a plurality of connecting plates; the plurality of connecting plates are distributed in a ring-shaped area between the input end choke disk and the output end choke disk.

[0016] The side surfaces of adjacent connecting plates are in contact with each other.

[0017] An assembly method of the disc-type torque-limiting synchronous permanent magnet coupling, the assembly method comprising the following steps:

[0018] Step 1: First, use standard parts to assemble the outer rotor component and the inner rotor component respectively; after the outer rotor component and the inner rotor component are assembled, perform dynamic balancing checks on the outer rotor component and the inner rotor component respectively;

[0019] Step 2: After step 1 is completed, disassemble and assemble the outer rotor components; first remove the output choke plate of the outer rotor components; at the same time, retain at least 3 connecting plates on the input choke plate; after the above operations are completed, transfer the remaining parts of the outer rotor and place them on the workbench, requiring the input choke plate to be arranged close to the workbench, that is, the input choke plate is at the bottom and the connecting plates are at the top;

[0020] Step 3: After step 2 is completed, place a non-magnetic pad on the external connection aluminum disk on the input end choke disk;

[0021] Step 4: After step 3 is completed, the inner rotor component is hoisted into the circular cavity formed by the remaining connecting plates in step 2. The end of the inner rotor component connected to the output flange is required to be at the top. At the same time, when the inner rotor component is hoisted and installed, the inner rotor component is required to fall until the permanent magnetic disk on the side of the inner rotor component close to the input end choke disk falls on the non-magnetic pad in step 2;

[0022] Step 5: After step 4 is completed, reinstall the output choke plate removed in step 2 onto the input choke plate;

[0023] Step 6: After step 5 is completed, another set of non-magnetic pads is placed on the inner connecting aluminum disk of the permanent magnetic disk on the side of the inner rotor component close to the output end choke disk; then the permanent magnetic disk on the side of the inner rotor component close to the output end choke disk is pushed upward until the non-magnetic pad on the permanent magnetic disk fits with the outer connecting aluminum disk in the output end choke disk;

[0024] Step 7: After completing step 6, install a flexible dust ring between the output end choke plate and the connecting shaft;

[0025] Step 8: After step 7 is completed, install the remaining connecting plates;

[0026] Step 9: After completing step 8, a permanent magnet coupling is assembled. If you need to re-assemble a new disc-type torque-limiting synchronous permanent magnet coupling, repeat steps 1 to 8 above.

[0027] The advantages of the present invention are:

[0028] The present invention discloses an assembly method of a disc-type torque-limiting synchronous permanent magnet coupling. By disclosing the above-mentioned assembly method, the present invention can facilitate operators to assemble the synchronous permanent magnet coupling, avoid wrong assembly of the synchronous permanent magnet coupling, and then improve the assembly efficiency of the synchronous permanent magnet coupling.

[0029] In addition, the present invention discloses a synchronous permanent magnet coupling of a disc structure, that is, the inner rotor component and the outer rotor component of the present invention are arranged longitudinally, and the inner rotor component and the outer rotor component of the present invention are magnetized along the axial direction of the coupling, which can avoid radial magnetization between the inner rotor component and the outer rotor component; furthermore, the permanent magnet coupling disclosed in the present invention has no additional radial force on the equipment, and will not cause equipment vibration or bending and twisting of the shaft; at the same time, the present invention is arranged with two permanent magnet disks, and when the equipment is overloaded, the permanent magnet disks can move laterally along the connecting shaft, automatically enlarge the air gap of the coupling itself, cut off power transmission, stop the load, and idle the motor, thereby realizing the protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0031] Figure 1A schematic diagram of the structure of the present invention

[0032] Figure 2 This is a structural diagram of the present invention after overload protection;

[0033] Figure 3 It is a schematic diagram of the arrangement of rectangular magnets used in the torque-limiting synchronous permanent magnet coupling of the present invention;

[0034] Figure 4 It is a schematic diagram of the arrangement of the sector magnets used in the torque-limiting synchronous permanent magnet coupling of the present invention;

[0035] Figure 5 It is a schematic diagram of the arrangement of trapezoidal magnets used in the torque-limiting synchronous permanent magnet coupling of the present invention;

[0036] Figure 6 It is a side view of the connecting shaft of the torque-limiting synchronous permanent magnetic coupling of the present invention having two plane sections;

[0037] Figure 7 It is a side view of the connecting shaft of the torque-limiting synchronous permanent magnetic coupling of the present invention having four plane sections;

[0038] Figure 8 It is the three-dimensional structure of a single magnet block in the present invention.

[0039] The marks in the above figure are:

[0040] 1. Outer rotor component; 11. Input flange; 12. Input choke plate; 13. Magnet; 14. Permanent magnetic disk; 15. Connecting plate; 16. Output choke plate; 17. Flexible dust ring; 2. Inner rotor component; 21. Output flange; 22. Connecting shaft; 23. Permanent magnetic disk; 24. Back choke; 25. Baffle; 3. Air gap. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0042] A disc-type torque-limiting synchronous permanent magnet coupling comprises an outer rotor component 1 and an inner rotor component 2; the outer rotor component 1 comprises an input-end choke disk 12 and an output-end choke disk 16; the inner rotor component 2 comprises a connecting shaft 22, on which a disk mechanism is sleeved; the input-end choke disk 12 and the output-end choke disk 16 are distributed on both sides of the disk mechanism; the input-end choke disk 12 and the output-end choke disk 16 are provided with an external magnetic part 1-1; the disk mechanism comprises two permanent magnetic disks 23 sleeved on the connecting shaft 22; the permanent magnetic disk 23 is provided with an inner magnetic part 2-1; at least one plane section 221 is provided on the connecting shaft 22; the permanent magnetic disk 23 is provided with a sleeve hole matched with the connecting shaft 22; the present invention discloses a disc-type torque-limiting synchronous permanent magnet coupling, comprising an outer rotor component 1 and an inner rotor component 2; the outer rotor component 1 comprises an inner rotor component 2 ... The invention discloses a disc-type torque-limiting synchronous permanent magnet coupling; firstly, the invention discloses a disc-type synchronous permanent magnet coupling, that is, the inner rotor component 2 and the outer rotor component 1 of the invention are arranged along the longitudinal direction, and the inner rotor component 2 and the outer rotor component 1 of the invention are magnetized along the axial direction of the coupling, which can avoid radial magnetization between the inner rotor component 2 and the outer rotor component 1; furthermore, the permanent magnet coupling disclosed in the invention has no additional radial force on the equipment, and will not cause equipment vibration or shaft bending and twisting; at the same time, the invention is arranged with two permanent magnet disks 23, when the equipment is overloaded, the permanent magnet disks 23 can move laterally along the connecting shaft 22, automatically enlarge the air gap 3 of the coupling itself, cut off the power transmission, stop the load, and the motor idles, so as to realize the protection function.

[0043] Specifically, the permanent magnet coupling disclosed in the present invention mainly includes an outer rotor component 1 and an inner rotor component 2; the present invention realizes power transmission through the mutual rotation of the outer rotor component 1 and the inner rotor component 2; specifically, in the present invention, the outer rotor component 1 includes an input end choke disk 12 and an output end choke disk 16; the inner rotor component 2 includes a connecting shaft 22, and the connecting shaft 22 is provided with a disk mechanism sleeved thereon; the input end choke disk 12 and the output end choke disk 16 are distributed on both sides of the disk mechanism; the input end choke disk 12 and the output end choke disk 16 are provided with an external magnetic part 1-1; the mutual cooperation of the disk mechanism of the present invention, the internal magnetic part 2-1 described below, the input end choke disk 12, the output end choke disk 16 and the external magnetic part 1-1 can realize the transmission of power from the inner rotor component 2 to the outer rotor component, or the transmission of power from the outer rotor component 1 to one side of the inner rotor component 2. In other words, the synchronous coupling disclosed in the present invention can be used as a driving or driven part on both sides, which can be selected according to needs.

[0044] In addition, the magnetic disk mechanism of the present invention comprises two permanent magnetic disks 23 sleeved on the connecting shaft 22; the permanent magnetic disk 23 is provided with an inner magnetic part 2-1; the present invention sets two permanent magnetic disks 23 on the connecting shaft 22; the size of the power transmitted by the coupling can be changed during actual use.

[0045] In addition, at least one plane section 221 is provided on the connecting shaft 22 in the present invention; here, by setting the plane section 221, the connecting shaft 22 is not a cylindrical structure, and such a setting well ensures the linkage of the permanent magnetic disk 23 and the connecting shaft 22 in rotation; it is convenient for the permanent magnetic disk 23 to subsequently drive the connecting shaft 22 to rotate, and vice versa; at the same time, in order to prevent the connecting shaft 22 from rotating relative to the permanent magnetic disk 23, the connecting shaft 22 in the present invention can be a quadrangular prism structure, that is, the connecting shaft 22 has four plane sections 221; it can also be provided with two plane sections 221, and the two plane sections 221 are symmetrically distributed on both sides of the connecting shaft 22; such a setting can well ensure the stability of the connection between the connecting shaft 22 and the permanent magnetic disk 23, and prevent the permanent magnetic disk 23 from rotating relative to the connecting shaft 22. At the same time, in order to ensure the matching degree between the permanent magnetic disk 23 and the connecting shaft 22, the present invention requires that the sleeve hole on the permanent magnetic disk 23 has the same cross-sectional shape as the corresponding connecting shaft 22; that is, the sleeve hole on the permanent magnetic disk 23 is adapted to the connecting shaft 22.

[0046] Furthermore, in the present invention, the external magnetic part 1-1 includes an externally connected aluminum disk arranged on the input end choke disk 12 or the output end choke disk 16, and a magnet group is arranged inside the externally connected aluminum disk; the present invention can increase the power transmission efficiency between the outer rotor component 1 and the inner rotor component 2 by optimizing the external magnetic part 1-1 on the input end choke disk 12 and the output end choke disk 16; the internal magnetic part 2-1 includes an internally connected aluminum disk arranged on the permanent magnet disk 23, and a magnet group is arranged on the internally connected aluminum disk; in addition, in the present invention, through the arrangement of the externally connected aluminum disk and the internally connected aluminum disk; it can be more convenient to assemble and connect the magnet group, and it is convenient to install different types of magnet blocks 13 according to needs later.

[0047] Specifically, in the present invention, the magnet group includes a plurality of magnet blocks 13; the plurality of magnet blocks 13 are arranged in an adjacent ring shape in sequence; the magnetic poles of adjacent magnet blocks 13 are distributed in opposite directions; such an arrangement enables the outer magnetic portion 1-1 of the outer rotor component 1 to interact with the inner magnetic portion 2-1 on the inner rotor component 2 to achieve non-contact transmission of torque; at the same time, the outer magnetic portion 1-1 and the inner magnetic portion 2-1 of the present invention can be arranged with the same magnet block 13, which reduces the types of magnet blocks 13, increases the versatility of the components, and reduces the production cost of the synchronous coupling to a certain extent.

[0048] Furthermore, in the present invention, the magnet blocks 13 in each magnet group are symmetrically distributed; such an arrangement can reduce or increase the magnet blocks 13 of the magnet group disclosed in the present invention in pairs, so as to meet the torque requirements of different equipment, thereby increasing the application scope of the magnet group of the present invention to a certain extent.

[0049] Furthermore, in the present invention, each of the magnet blocks 13 includes a block body, and the block body has a lower end face 131, an upper end face 132 and a connecting side face; the lower end face 131 is connected to the upper end face 132 through the connecting side face; the connecting side face includes a first side face 133, a second side face 134, a third side face 135 and a fourth side face 136; the first side face 133, the second side face 134, the third side face 135 and the fourth side face 136 are connected end to end in sequence; the lower end face 131 is arranged opposite to the upper end face 132; the first side face 133 and the third side face 135 are arranged opposite to each other, and the second side face 134 and the fourth side face 136 are arranged opposite to each other; the lower end face 131, the first side face 133 and the third side face 135 are planar structures; the present invention facilitates the subsequent assembly of each magnet block 13 through such a structural design ; The above-mentioned lower end face 131, upper end face 132 and connecting side face of the present invention are described with the top view as the reference standard, and one of the permanent magnetic disk 23, the input end choke disk 12 and the output end choke disk 16 as the basic reference surface; during the actual assembly connection, the lower end face 131 of the magnet block 13 is connected to the bottom surface of the external connecting aluminum disk or the internal connecting aluminum disk, and the magnet block 13 is generally embedded in the corresponding connecting aluminum disk; in addition, the first side face 133 and the third side face 135 of the present invention are located on both sides of the magnet block 13, which is convenient for subsequent fitting or mutual calibration with adjacent magnet blocks 13; it is convenient for the installation and positioning of the magnet block 13; at the same time, in order to avoid the installation interference between the magnet block 13 and the adjacent components caused by the protrusions on the magnet block 13, the first side face 133, the second side face 134 and the lower end face 131 in the present invention are planar structures.

[0050] At the same time, when the lower end face 131, the upper end face 132, the first side face 133, the second side face 134, the third side face 135 and the fourth side face 136 are all planar structures, and the relative end faces are arranged parallel to each other, the structure of the magnet block 13 is a rectangular block structure; that is, the horizontal projection of the magnet block 13 in the present invention is rectangular; based on such a setting, the side faces of the magnet block 13 in the present invention are all flat, one function is to reduce the use of materials, and the other function is to increase its versatility. In actual assembly, it is only necessary to require that the polarity arrangements of adjacent magnet blocks 13 are opposite, as shown in the accompanying drawings; in the present invention, the magnet block with a rectangular structure has a high utilization rate of raw materials and a low cost, and the torque transmission capacity can be changed by changing the number of installations, and has good versatility.

[0051] Furthermore, in the present invention, the first side surface 133 and the third side surface 135 are symmetrically arranged, and the first side surface 133 and the third side surface 135 are inclinedly arranged; and the plane of the first side surface 133 intersects with the plane of the second side surface 134; the present invention is based on such a structural design, so that the magnet block 13 disclosed in the present invention is equivalent to a trapezoidal block structure, and the magnet block 13 of the present invention is based on such a structural design. Through such a structural design, the present invention can arrange each magnet block 13 closely when actually arranging the magnet group; the closely arranged torque transmission capacity is greater, and there is no blank area between the magnets.

[0052] Furthermore, in the present invention, the second side surface 134 and the fourth side surface 136 are arc-shaped surfaces; such a setting makes the magnet block of the present invention equivalent to a fan-shaped block structure with inner and outer protrusions. Based on such a structural design, the present invention can realize the magnetic field arrangement of the magnet blocks 13 in each magnet group of the present invention; it can also be a close arrangement; there is no gap between the magnet blocks of the fan-shaped structure, and there is a triangular area blank between the magnets of the rectangular magnet, so when the magnets are arranged with the same diameter, the fan-shaped structure has the largest magnet area and greater torque transmission capacity.

[0053] The magnet is assembled by installing the magnet into the permanent magnetic disk through a special tooling, and then covering the choke disk on the permanent magnetic disk.

[0054] The present invention can optimize the magnetization effect of the magnet group by setting the above-mentioned magnet blocks 13, and can reduce the types of magnet blocks 13 required to form the corresponding magnet group by limiting the structure and arrangement of the magnet blocks 13; thereby reducing the types of magnet blocks 13, which can not only reduce the cost of synchronous coupling components, but also improve assembly efficiency; specifically, the coupling disclosed in the present invention uses only one type of magnet block 13, which can increase the versatility of the magnet block 13, reduce the use of materials, and reduce product costs; at the same time, in the present invention, adjacent magnet blocks 13 can be arranged in a fitting or non-fitting manner as needed, which can avoid the problem of requiring two magnet blocks 13 when opposite polarity arrangements are required; in other words, the present invention reduces the inventory types and quantities of magnet blocks 13 by limiting the structure of the magnet blocks 13, thereby indirectly reducing product costs.

[0055] Furthermore, in the present invention, a flexible dust ring 17 is provided between the output end choke plate 16 and the connecting shaft 22; the provision of the flexible dust ring 17 plays a good blocking role; it prevents external debris from entering the interior of the coupling through the gap between the output end choke plate 16 and the connecting shaft 22; in addition, in the present invention, the flexible dust ring 17 can be a rubber ring or other sealing structure.

[0056] Furthermore, the input choke plate 12 and the output choke plate 16 described in the present invention are connected by a plurality of connecting plates 15; the plurality of connecting plates 15 are distributed in a ring-shaped manner in the area between the input choke plate 12 and the output choke plate 16; the present invention facilitates the connection and assembly between the input choke plate 12 and the output choke plate 16 through the provision of the connecting plates 15, thereby ensuring the integrity of the input choke plate 12 and the output choke plate 16; in addition, the connecting plates 15 disclosed in the present invention also serve as positioning members during the subsequent assembly of the permanent magnet coupling, thereby facilitating the connection and assembly between the outer rotor component 1 and the inner rotor component 2.

[0057] Furthermore, in the present invention, the sides of adjacent connecting plates 15 are fitted together; such an arrangement enables the multiple connecting plates 15 to form an annular closed space, which, in conjunction with the flexible dust ring 17 mentioned above, can realize that the internal cavity formed by the outer rotor component 1 and the inner rotor component 2 is similar to a sealing structure, thereby preventing external debris from entering the interior of the coupling and affecting the normal operation of the coupling.

[0058] An assembly method of the disc-type torque-limiting synchronous permanent magnet coupling, the assembly method comprising the following steps:

[0059] Step 1: First, use standard parts to assemble the outer rotor component 1 and the inner rotor component 2 respectively; after the outer rotor component 1 and the inner rotor component 2 are assembled, perform dynamic balancing checks on the outer rotor component 1 and the inner rotor component 2 respectively;

[0060] Step 2: After step 1 is completed, the outer rotor component 1 is disassembled and assembled; first, the output end choke plate 16 of the outer rotor component 1 is removed; at the same time, at least three connecting plates 15 are retained on the input end choke plate 12; after the above operations are completed, the remaining parts of the outer rotor are transferred and placed on the workbench, and the input end choke plate 12 is required to be arranged close to the workbench, that is, the input end choke plate 12 is at the bottom and the connecting plates 15 are at the top;

[0061] Step 3: After step 2 is completed, a non-magnetic pad is placed on the external connection aluminum disk on the input end choke disk 12;

[0062] Step 4: After step 3 is completed, the inner rotor component 2 is hoisted into the circular cavity formed by the remaining connecting plates 15 in step 2, and the end of the inner rotor component 2 connected to the output flange 21 is required to be at the top. At the same time, when the inner rotor component 2 is hoisted and installed, the inner rotor component 2 is required to fall until the permanent magnetic disk 23 on the side of the inner rotor component 2 close to the input end choke disk 12 falls on the non-magnetic pad in step 2;

[0063] Step 5: After step 4 is completed, the output end choke plate 16 removed in step 2 is reinstalled onto the input end choke plate 12;

[0064] Step 6: After step 5 is completed, another set of non-magnetic conductive pads are placed on the inner connecting aluminum disk of the permanent magnetic disk 23 on the side of the inner rotor component 2 close to the output end choke disk 16; then the permanent magnetic disk 23 on the side of the inner rotor component 2 close to the output end choke disk 16 is pushed upward until the non-magnetic conductive pads on the permanent magnetic disk 23 fit with the outer connecting aluminum disk in the output end choke disk 16;

[0065] Step 7: After step 6 is completed, a flexible dust ring 17 is installed between the output end choke plate 16 and the connecting shaft 22;

[0066] Step 8: After step 7 is completed, install the remaining connecting plate 15;

[0067] Step 9: After completing step 8, a permanent magnet coupling is assembled. If you need to re-assemble a new disc-type torque-limiting synchronous permanent magnet coupling, repeat steps 1 to 8 above.

[0068] Through the disclosure of the above assembly arrangement, the present invention can realize the assembly between the outer rotor component 1 and the inner rotor component 2, and then realize the assembly of the entire coupling.

[0069] specific;

[0070] The assembly steps are as follows:

[0071] Step 1: First, select qualified parts to assemble the outer rotor component 1 and the inner rotor component 2 respectively; after the outer rotor component 1 and the inner rotor component 2 are assembled, perform dynamic balancing checks on the outer rotor component 1 and the inner rotor component 2 respectively;

[0072] Step 2: assemble the coupling, first remove the connecting bolts between the output end choke plate 16 and the connecting plate 15 of the outer rotor component 1, remove the output end choke plate 16 and the external magnetic group on the output end choke plate 16; then remove part of the connecting plates 15, retain at least 3 connecting plates 15, and require that the remaining connecting plates 15 tend to be evenly spaced and distributed in an annular manner, then place the remaining parts of the outer rotor component 1 after the above disassembly and assembly on the workbench, require that the input end choke plate 12 is at the bottom, and the connecting plates 15 are arranged in the longitudinal direction, that is, the connecting plates 15 are above the input end choke plate 12;

[0073] Step 3: Place a number of non-magnetic pads with a thickness similar to (the same as) the initially set air gap 3 on the outer connecting aluminum disk on the input end choke disk 12 of step 2 along the circumferential edge to isolate the magnet group in the outer rotor component 1 from the magnet group in the inner rotor component 2; then hoist the inner rotor component 2 into the circular cavity formed by the remaining connecting plates 15 of step 1, and require the inner rotor component 2 to be hoisted in the longitudinal direction; the reference is that the output flange 21 connected to the inner rotor component 2 is at the top, and the corresponding permanent magnetic disk 23 baffle 25 is at the bottom; the inner rotor component 2 is required to be aligned with the above circular cavity, and the inner rotor component 2 is dropped; until the lower permanent magnetic disk 23 in the inner rotor component 2 placed in the longitudinal direction falls on the above non-magnetic pad; because of the weight, the upper magnetic disk also falls at this time, and the chokes on the two permanent magnetic disks 23 are close together;

[0074] Step 4: Install the output choke plate 16 and the external magnetic part 1-1 removed in step 2 back to the input choke plate 12 to form the outer rotor component 1; when specifically connected, after connecting the external magnetic part 1-1 to the output choke plate 16, the output choke plate 16 connected with the external magnetic part 1-1 is connected to the other end of the connecting plate 15; finally, the outer rotor component 1 is formed;

[0075] Step 5: After step 4 is completed, a plurality of non-magnetic pads having a thickness similar to (or the same as) that of the set air gap 3 are added to the upper circumferential edge of the upper magnetic disk (close to the output choke disk 16) in the inner rotor component 2; then the upper magnetic disk of the inner rotor is pushed upward until the non-magnetic pads are in contact with the output choke disk, specifically, the outer magnetic portion 1-1 on the output choke disk;

[0076] Step 6: Install the flexible dust ring 17;

[0077] Step 7: Install the remaining connecting plates 15; now the assembly of a disc-type synchronous permanent magnet coupling is completed.

[0078] The present invention discloses a torque-limiting synchronous permanent magnet coupling, comprising an outer rotor component 1 and an inner rotor component 2 which are coaxially mounted, wherein an input-end choke plate 12 and an output-end choke plate 16 in the outer rotor component 1 are connected as a whole through a connecting plate 15, and an outer magnetic portion 1-1 is arranged on the inner side of the opposite surface of the input-end choke plate 12 and the output-end choke plate 16; specifically, the outer connecting aluminum plate is provided with a magnet group in the outer connecting aluminum plate, and the magnet group includes a plurality of magnet blocks 13; in addition, in the present invention, the inner rotor component 2 comprises a connecting shaft 22, and a permanent magnetic disk 23 is arranged on the connecting shaft 22, and an inner magnetic portion 2-1 is arranged on the permanent magnetic disk 23, and the inner magnetic portion 2-1 includes a magnet group arranged on the inner side of ... The inner connected aluminum disk on the permanent magnetic disk 23 has a magnet layer inside the inner connected aluminum disk, and the magnet layer also includes a plurality of magnet blocks 13; in addition, in the present invention, an input flange 11 is provided on the input end choke disk 12, and two permanent magnetic disks 23 in the inner rotor component 2 (the permanent magnetic disk 23 of the present invention and the above-mentioned inner connected aluminum disk can be made into an integral structure, which can be an aluminum disk structure); in the present invention, an inner magnetic part 2-1 is provided on the permanent magnetic disk 23; at the same time, in order to ensure the stability of the placement of the magnet group, a back output end choke disk 4 is installed on the back of the aluminum disk, and the two aluminum disks are slid back to back on the connecting shaft 22, and the end of the connecting shaft 22 is connected with an output flange 21.

[0079] In addition, an output flange 21 is connected to one end of the present invention, and a baffle 25 is installed at the other end; the baffle 25 is provided to limit the lateral movement of the aluminum disk (permanent magnetic disk 23).

[0080] In addition, in the present invention, the cross section of the connecting shaft 22 is two planes or four planes that are tangent to a circle and symmetrical, and the cross section of the inner hole of the aluminum plate corresponds to the cross section of the shaft.

[0081] Compared with the prior art, the present invention has high transmission efficiency, avoids vibration caused by additional radial force, and can achieve overload protection.

[0082] In addition, the magnet blocks 13 used in the present invention can be rectangular, fan-shaped, trapezoidal, etc.; the present invention can form different types of magnet groups by using different magnet blocks 13; specifically, the magnet blocks 13 in the magnet group disclosed in the present invention can be loosely arranged, closely arranged, magnetically concentrated, etc.

[0083] In addition, in the present invention, the magnet blocks 13 in each magnet group are symmetrically arranged, which is centrally symmetrical. Based on such an arrangement, the magnet blocks 13 in the magnet group can be reduced in pairs to meet the torque requirements of different devices.

[0084] In addition, in the present invention, a plurality of connecting plates 15 are sequentially connected to each other and closely arranged to form a sealing structure.

[0085] When the coupling disclosed in the present invention is in use, when the equipment is overloaded, the coupling disclosed in the present invention can automatically increase the air gap 3, cut off the power transmission, stop the load, and cause the motor to idle, thereby realizing the protection function.

[0086] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for assembling a disc-type torque-limiting synchronous permanent magnet coupling, characterized in that: The synchronous permanent magnet coupling comprises an outer rotor component and an inner rotor component; the outer rotor component comprises an input end choke disk and an output end choke disk; the inner rotor component comprises a connecting shaft, on which a disk mechanism is sleeved; the input end choke disk and the output end choke disk are distributed on both sides of the disk mechanism; the input end choke disk and the output end choke disk are provided with an external magnetic part; the disk mechanism comprises two permanent magnetic disks sleeved on the connecting shaft; the permanent magnetic disk is provided with an internal magnetic part; at least one plane section is provided on the connecting shaft; the permanent magnetic disk is provided with a sleeve hole adapted to the connecting shaft; The assembly method comprises the following steps: Step 1: First, use standard parts to assemble the outer rotor component and the inner rotor component respectively; after the outer rotor component and the inner rotor component are assembled, perform dynamic balancing checks on the outer rotor component and the inner rotor component respectively; Step 2: After step 1 is completed, disassemble and assemble the outer rotor components; first remove the output choke plate of the outer rotor components; at the same time, retain at least 3 connecting plates on the input choke plate; after the above operations are completed, transfer the remaining parts of the outer rotor and place them on the workbench, requiring the input choke plate to be arranged close to the workbench, that is, the input choke plate is at the bottom and the connecting plates are at the top; Step 3: After step 2 is completed, place a non-magnetic pad on the external connection aluminum disk on the input end choke disk; Step 4: After step 3 is completed, the inner rotor component is hoisted into the circular cavity formed by the remaining connecting plates in step 2. The end of the inner rotor component connected to the output flange is required to be at the top. At the same time, when the inner rotor component is hoisted and installed, the inner rotor component is required to fall until the permanent magnetic disk on the side of the inner rotor component close to the input end choke disk falls on the non-magnetic pad in step 2; Step 5: After step 4 is completed, reinstall the output choke plate removed in step 2 onto the input choke plate; Step 6: After step 5 is completed, another set of non-magnetic pads is placed on the inner connecting aluminum disk of the permanent magnetic disk on the side of the inner rotor component close to the output end choke disk; then the permanent magnetic disk on the side of the inner rotor component close to the output end choke disk is pushed upward until the non-magnetic pad on the permanent magnetic disk fits with the outer connecting aluminum disk in the output end choke disk; Step 7: After completing step 6, install a flexible dust ring between the output end choke plate and the connecting shaft; Step 8: After step 7 is completed, install the remaining connecting plates; Step 9: After completing step 8, a permanent magnet coupling is assembled. If you need to re-assemble a new disc-type torque-limiting synchronous permanent magnet coupling, repeat steps 1 to 8 above.

2. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 1, characterized in that: The external magnetic part includes an externally connected aluminum disk arranged on the input end choke disk or the output end choke disk, and a magnet group is arranged inside the externally connected aluminum disk; the internal magnetic part includes an internally connected aluminum disk arranged on the permanent magnetic disk, and a magnet group is arranged on the internally connected aluminum disk.

3. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 2, characterized in that: The magnet group comprises a plurality of magnet blocks; the plurality of magnet blocks are sequentially and adjacently arranged in a ring shape; and the magnetic poles of adjacent magnet blocks are arranged in opposite directions.

4. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 3 is characterized in that: The magnet blocks in each magnet group are distributed symmetrically.

5. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 3, characterized in that: Each of the magnet blocks includes a block body, which has a lower end face, an upper end face and a connecting side face; the lower end face is connected to the upper end face through the connecting side face; the connecting side face includes a first side face, a second side face, a third side face and a fourth side face; the first side face, the second side face, the third side face and the fourth side face are connected end to end in sequence; the lower end face is arranged opposite to the upper end face; the first side face and the third side face are arranged opposite to each other, and the second side face and the fourth side face are arranged opposite to each other; the lower end face, the first side face and the third side face are arranged opposite to each other 6. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 5, characterized in that: The first side surface is symmetrically arranged with the third side surface, the first side surface and the third side surface are inclinedly arranged; and the plane where the first side surface is located intersects with the plane where the second side surface is located.

7. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 6, characterized in that: The second side surface and the fourth side surface are arc-shaped surfaces.

8. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 1, characterized in that: A flexible dustproof ring is provided between the output end choke plate and the connecting shaft.

9. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 1, characterized in that: The input end choke disk and the output end choke disk are connected via a plurality of connecting plates; the plurality of connecting plates are distributed in a ring-shaped area between the input end choke disk and the output end choke disk.

10. The assembly method of a disc-type torque-limiting synchronous permanent magnet coupling according to claim 9, characterized in that: The side surfaces of adjacent connecting plates are in contact with each other.

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