A synchronous permanent magnet coupling with online torque adjustment

Abstract

This utility model discloses a synchronous permanent magnet coupling with online torque adjustment, including an outer bushing for connecting a load shaft; an inner bushing spaced at one end of the outer bushing along the axial direction for connecting a drive shaft; a first carrier coaxially disposed at one end of the outer bushing facing the inner bushing; an adjusting carrier slidably disposed on the inner circumferential surface of the first carrier, the adjusting carrier being driven to move axially by an adjusting mechanism; an outer rotor magnet disposed on the inner circumferential surface of the adjusting carrier; an inner rotor magnet disposed on the outer circumferential surface of the portion of the inner bushing extending into the first carrier, the inner rotor magnet and the outer rotor magnet being correspondingly arranged, and an air gap being disposed between the inner rotor magnet and the outer rotor magnet in the radial direction. This utility model can flexibly adjust the maximum torque value online, meeting the requirement of timely entry into a protection state under different working conditions, and has a wide range of applications.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet coupling technology, specifically to a synchronous permanent magnet coupling with online torque adjustment. Background Technology

[0002] Synchronous permanent magnet couplings are couplings that utilize rare-earth permanent magnet magnetic fields for magnetic levitation and air-isolation transmission. Their advantages, such as synchronous transmission, vibration isolation, shock elimination, overload protection, and maintenance-free operation, have been recognized by customers in the industry and are now widely used in the steel, coal, cement, energy, and chemical industries.

[0003] The maximum torque value of traditional synchronous permanent magnet couplings is not easy to adjust. When a large-scale synchronous permanent magnet coupling is temporarily used to replace a small-scale one, the maximum torque value of the large-scale coupling is much higher than the rated torque of the motor. This causes the motor to trip directly due to overcurrent when overloaded, and the coupling fails to enter the "slippage" or "decoupling" protection state in time. Therefore, there is an urgent need for a synchronous permanent magnet coupling that can meet the requirements of different working conditions and can enter the protection state in time. Utility Model Content

[0004] Therefore, this utility model provides a synchronous permanent magnet coupling with online torque adjustment to solve the problem that the existing technology lacks a synchronous permanent magnet coupling that can meet the needs of different working conditions and can enter the protection state in a timely manner.

[0005] This utility model provides a synchronous permanent magnet coupling with online torque adjustment, comprising:

[0006] Outer bushing, used to connect the reducer shaft;

[0007] An inner bushing is spaced apart at one end of the outer bushing along the axial direction;

[0008] The first carrier is coaxially disposed at one end of the outer bushing that faces the inner bushing axially.

[0009] The adjustment carrier is slidably disposed on the inner circumferential surface of the first carrier and is driven to move axially by the adjustment mechanism;

[0010] An outer rotor magnet is disposed on the inner circumferential surface of the adjusting carrier;

[0011] An inner rotor magnet is disposed on the outer peripheral surface of the portion of the inner bushing extending into the first carrier. The inner rotor magnet is disposed correspondingly to the outer rotor magnet, and an air gap is provided between the inner rotor magnet and the outer rotor magnet in the radial direction.

[0012] The synchronous permanent magnet coupling with online torque adjustment according to this utility model has at least the following technical effects:

[0013] By sliding the adjusting carrier axially to the inner circumferential surface of the first carrier and driving its movement through the adjusting mechanism, when the maximum torque value needs to be reduced, the adjusting mechanism drives the outer rotor magnet to move axially away from the inner rotor magnet along with the adjusting carrier, reducing the coupling area between the outer and inner rotor magnets. This reduces the interaction force between the outer and inner rotor magnets, decreases torque transmission, and thus reduces the maximum torque value. When the maximum torque value needs to be increased, the adjusting mechanism drives the outer rotor magnet to move axially closer to the inner rotor magnet along with the adjusting carrier, increasing the coupling area between the outer and inner rotor magnets. This increases the interaction force between the outer and inner rotor magnets, increases torque transmission, and thus increases the maximum torque value. This allows for flexible online adjustment of the maximum torque value of this synchronous permanent magnet coupling without disassembly or assembly, meeting the requirement of timely entry into protection mode under different operating conditions, and has a wide range of applications.

[0014] In one optional embodiment, the adjusting carrier has a first threaded hole extending through it along the axial direction, and the adjusting mechanism includes an adjusting screw, which is rotatably disposed within the first carrier about the axial direction. The adjusting carrier is threadedly connected to the adjusting screw through the first threaded hole.

[0015] In one alternative embodiment, the adjusting screw extends axially toward one end of the outer bushing to the outside of the first carrier and is configured as a force-applying part.

[0016] In one alternative embodiment, the adjusting mechanism further includes a locking assembly having a locked state that locks the adjusting screw to the first carrier, and an unlocked state that allows the adjusting screw to rotate relative to the first carrier.

[0017] In one alternative embodiment, the outer peripheral surface of the force-applying part is provided with a threaded portion, and the locking assembly includes a locking element threadedly connected to the threaded portion.

[0018] In one optional embodiment, the first carrier has a first through hole corresponding to the position of the adjusting screw, the portion of the adjusting screw located in the first through hole has a plug hole arranged radially, and the side wall of the first carrier has a through hole corresponding to the position of the plug hole, the through hole communicating with the first through hole; the locking assembly includes a plug-in locking part, the plug-in locking part being detachably plugged into the through hole and the plug hole.

[0019] In one optional embodiment, a scale is provided at one end of the adjusting carrier along the axial direction, and a second through hole is provided through the first carrier corresponding to the position of the scale, the second through hole being used for the scale to move through.

[0020] In one optional embodiment, a limiting part is provided inside the first carrier, the limiting part being located at one end of the adjusting carrier that is axially away from the outer bushing, and the axial projection of the adjusting carrier at least partially overlaps with the limiting part.

[0021] In one optional embodiment, the sidewall of the first carrier is provided with a long through hole in the radial direction, and the outer peripheral surface of the adjusting carrier is provided with a pushing part, which passes through the long through hole and extends to the outside of the first carrier. The pushing part is slidably disposed in the long through hole in the axial direction. The outer peripheral surface of the first carrier is provided with a first mounting part and a second mounting part, which are located at the two ends of the long through hole in the axial direction. The first mounting part is located at the end of the second mounting part facing the outer bushing in the axial direction. The first mounting part is provided with a second threaded hole, and the second mounting part is provided with a third threaded hole. The adjusting mechanism includes:

[0022] A first adjusting bolt is threaded into the second threaded hole, and the first adjusting bolt is used to abut against the end of the pushing part that is away from the second mounting part;

[0023] The second adjusting bolt is threaded into the third threaded hole and is used to abut against the end of the pushing part that is away from the first mounting part.

[0024] In some optional embodiments, the adjustment mechanism further includes:

[0025] The first nut is threaded to the first adjusting bolt and is used to abut against the side of the first mounting part that is axially opposite to the second mounting part.

[0026] The second nut is threaded onto the second adjusting bolt and is used to abut against the side of the second mounting portion that is axially opposite to the first mounting portion. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure after adjusting the maximum torque value in the first embodiment of the present invention;

[0029] Figure 2 for Figure 1Partial structural diagram

[0030] Figure 3 This is a schematic diagram of the structure after reducing the maximum torque value in the first embodiment of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure after adjusting the maximum torque value in the second embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure after reducing the maximum torque value in the second embodiment of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure after adjusting the maximum torque value in the third embodiment of this utility model;

[0034] Figure 7 This is a schematic diagram of the structure after adjusting the maximum torque value in the third embodiment of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - outer bushing, 110 - connecting ring;

[0037] 200-Inner bushing, 210-Inner rotor magnet, 220-Positioning ring, 221-Locking screw, 222-Third nut, 230-Limit stop;

[0038] 300-First carrier, 310-Connecting disc, 311-Second through hole, 312-First sealing element, 313-Second sealing element, 314-First through hole, 320-Connecting cylinder, 321-Elongated through hole, 322-Second mounting part;

[0039] 400 - Adjustment carrier, 410 - External rotor magnet, 420 - Scale, 430 - Pushing part;

[0040] 510-Adjusting screw, 511-Force application part, 520-Locking element, 530-Plug-in locking part, 540-Limiting part, 551-First bearing, 552-Second bearing, 553-Bearing limiting element, 560-First adjusting bolt, 561-First nut, 570-Second adjusting bolt, 571-Second nut;

[0041] 600 - Install locking sleeve, 610 - Support screw, 620 - Fourth nut. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0045] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0046] According to an embodiment of this utility model, a synchronous permanent magnet coupling with online torque adjustment includes an outer bushing 100 for connecting a load shaft, preferably a reducer shaft; an inner bushing 200 is spaced at one end of the outer bushing 100 along the axial direction for connecting a drive shaft, preferably a motor shaft; a first carrier 300 is coaxially disposed at one end of the outer bushing 100 facing the inner bushing 200; an adjusting carrier 400 is slidably disposed on the inner circumferential surface of the first carrier 300, and the adjusting carrier 400 is driven to move axially by an adjusting mechanism; an outer rotor magnet 410 is disposed on the inner circumferential surface of the adjusting carrier 400; an inner rotor magnet 210 is disposed on the outer circumferential surface of the portion of the inner bushing 200 extending into the first carrier 300, the inner rotor magnet 210 and the outer rotor magnet 410 are correspondingly disposed, and an air gap A is disposed between the inner rotor magnet 210 and the outer rotor magnet 410 in the radial direction.

[0047] In this embodiment, the synchronous permanent magnet coupling connects the adjusting carrier 400 axially to the inner circumferential surface of the first carrier 300 and is driven to move by the adjusting mechanism. When it is necessary to reduce the maximum torque value of this embodiment, the adjusting mechanism drives the outer rotor magnet 410 to move axially away from the inner rotor magnet 210 along with the adjusting carrier 400, reducing the coupling area between the outer rotor magnet 410 and the inner rotor magnet 210. This reduces the interaction force between the outer rotor magnet 410 and the inner rotor magnet 210, decreases torque transmission, and thus reduces the maximum torque value. When it is necessary to increase the maximum torque value of this embodiment... When the maximum torque value is reached, the adjusting mechanism drives the outer rotor magnet 410 to move axially closer to the inner rotor magnet 210 along with the adjusting carrier 400, increasing the coupling area between the outer rotor magnet 410 and the inner rotor magnet 210. This increases the interaction force between the outer rotor magnet 410 and the inner rotor magnet 210, thereby increasing torque transmission and maximizing the maximum torque value. This allows for flexible online adjustment of the maximum torque value of the synchronous permanent magnet coupling coupling in this embodiment without the need for disassembly or assembly, meeting the requirement of timely entry into a protection state under different operating conditions, and thus having a wide range of applications.

[0048] It is understandable that the "coupling area of ​​the outer rotor magnet 410 and the inner rotor magnet 210" mentioned in the text refers to the area of ​​the overlapping part of the radial projection of the inner rotor magnet 210 and the outer rotor magnet 410.

[0049] It is understood that the axial direction mentioned in the text refers to the axial direction of the outer bushing 100, and the radial direction refers to the radial direction of the outer bushing 100. For ease of description, it is referred to as... Figure 1 The axial and radial directions are described as axial and radial.

[0050] It should be noted that the outer rotor magnet 410 and the inner rotor magnet 210 are respectively arranged on the first carrier 300 and the inner bushing 200. The magnetic circuit adopts the alternating arrangement of NS magnetic poles or the Halbach array structure. There is an air gap A between the outer rotor magnet 410 and the inner rotor magnet 210, and the torque and speed are transmitted by magnetic attraction.

[0051] It should be noted that the inner bushing 200 and the first carrier 300 are coaxially arranged to ensure that the air gap A between the inner rotor magnet 210 and the outer rotor magnet 410 at various positions along the circumference remains consistent, thereby ensuring the smooth operation of the synchronous permanent magnet coupling in this embodiment.

[0052] In practical applications, the outer bushing 100 can be connected to the motor shaft, and the inner bushing 200 can be connected to the reducer shaft.

[0053] In specific applications, one of the inner circumferential surface of the first carrier 300 and the outer circumferential surface of the adjusting carrier 400 is provided with a sliding groove, and the other of the inner circumferential surface of the first carrier 300 and the outer circumferential surface of the adjusting carrier 400 is provided with a sliding member. The sliding member is slidably connected to the sliding groove along the axial direction to ensure the smoothness of adjusting the maximum torque value of this embodiment.

[0054] It should be noted that when the radial projection of the inner rotor magnet 210 completely overlaps with that of the outer rotor magnet 410, the maximum torque value is adjusted to the highest value.

[0055] It should be noted that when the outer rotor magnet 410 is moved axially away from the inner rotor magnet 210 to a position where the radial projection of the inner rotor magnet 210 does not overlap with the outer rotor magnet 410, the magnetic attraction between the outer rotor magnet 410 and the inner rotor magnet 210 disappears (i.e., the maximum torque value is basically zero). At this time, this embodiment enters a protection state at any speed, realizing a clutch-like disengagement function, satisfying the coaxial dual drive condition, with one motor in use and one on standby, thus expanding the applicability of this embodiment.

[0056] like Figures 1 to 5 As shown, in some embodiments, the adjusting carrier 400 has a first threaded hole extending through it axially. The adjusting mechanism includes an adjusting screw 510, which is rotatably disposed within the first carrier 300 about an axial direction. The adjusting carrier 400 is threadedly connected to the adjusting screw 510 through the first threaded hole. By threading the adjusting carrier 400 to the adjusting screw 510 and slidingly connecting it to the first carrier 300 axially, the adjusting carrier 400 will not rotate relative to the first carrier 300 about an axial direction. When it is necessary to adjust the maximum torque value of this embodiment, it is only necessary to drive the adjusting screw 510 to rotate clockwise or counterclockwise about an axial direction. The structure is simple and the operation is convenient.

[0057] like Figures 1 to 3As shown, specifically, one end of the adjusting screw 510 extends axially toward the outer bushing 100 to the outside of the first carrier 300 and is configured as a force-applying part 511. By extending the force-applying part 511 outside the first carrier 300, it is convenient to use tools such as wrenches to drive the adjusting screw 510 to rotate around the axial direction, so as to flexibly adjust the maximum torque value of this embodiment even in an environment without electricity.

[0058] In some embodiments, the adjustment mechanism further includes a locking assembly, which has a locked state in which the adjusting screw 510 is locked to the first carrier 300, and an unlocked state in which the adjusting screw 510 can rotate relative to the first carrier 300. By fixing the adjusting screw 510 and the first carrier 300 together through the locking assembly in the locked state, during the process of adjusting the large torque value of this embodiment to the required value and putting it into operation, it is beneficial to avoid the adjusting screw 510 rotating relative to the first carrier 300 due to external factors such as vibration, thereby improving the operational stability of the synchronous permanent magnet coupling of this embodiment.

[0059] Specifically, the outer peripheral surface of the force-applying part 511 is provided with a threaded portion, and the locking assembly includes a locking element 520 threadedly connected to the threaded portion. The locking element 520 is used to abut against the end face of the first carrier 300 facing the outer bushing 100 axially. By screwing the locking element 520 threadedly to the threaded portion, when it is necessary to switch the locking assembly to the locked state, simply rotate the locking element 520 until it abuts against the end face of the first carrier 300 axially away from the inner bushing 200, and the frictional force will prevent the adjusting screw 510 from rotating relative to the first carrier 300. When it is necessary to switch the locking assembly to the unlocked state to adjust the maximum torque value, simply rotate the locking element 520 to disengage it from the first carrier 300. At the same time, the locking assembly with this structure is conducive to stepless adjustment of the maximum torque value of this embodiment and can be applied to more working conditions.

[0060] In a specific application, the locking element 520 includes a nut, a washer, and a locking part that are separately arranged. The cross-sectional area of ​​the locking part perpendicular to the axial direction is larger than the cross-sectional area of ​​the nut perpendicular to the axial direction. The locking part and the washer are slidably disposed on the force-applying part 511 along the axial direction. The nut is threadedly connected to the threaded part. The locking part is disposed at one end of the nut that faces the first carrier 300 along the axial direction. The washer is disposed between the nut and the locking part.

[0061] like Figure 3 and Figure 4As shown, in some embodiments, the first carrier 300 has a first through hole 314 extending through one end facing the outer bushing 100, corresponding to the position of the adjusting screw 510. The portion of the adjusting screw 510 located in the first through hole 314 has a radially arranged insertion hole. A through hole extends through the side wall of the first carrier 300 corresponding to the insertion hole, and the through hole communicates with the first through hole 314. The locking assembly includes a insertion locking part 530, which is detachably inserted into the through hole and the insertion hole. Because the side wall of the first carrier 300 has a through hole corresponding to the insertion hole, when the locking assembly needs to be switched to the locked state, the insertion hole and the through hole are radially aligned, and the insertion locking part 530 can be inserted into both simultaneously. When the locking assembly needs to be switched to the unlocked state to adjust the maximum torque value, the insertion locking part 530 can simply be pulled out from the insertion hole and the through hole, making the locking and unlocking switching operation simple. Meanwhile, the locking components of this structure occupy little space and have few exposed parts, resulting in high security.

[0062] To improve the locking effect of the locking assembly in the locked state, specifically, the insertion hole extends radially through the adjusting screw 510; more specifically, the inner bottom wall of the first through hole 314 is recessed with a slot corresponding to the position of the through hole, the slot being used for the detachable insertion of the locking part 530.

[0063] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the adjusting carrier 400 has a scale 420 at one end axially facing the outer bushing 100. The first carrier 300 has a second through hole 311 corresponding to the scale 420, allowing the scale 420 to pass through. By moving the scale 420 synchronously with the adjusting carrier 400, and extending the end of the scale 420 with zero graduations through the second through hole 311 to the outside of the first carrier 300, when adjusting the maximum torque value of this embodiment, the adjusted distance L is determined by observing the scale value of the portion of the scale 420 extending beyond the first carrier 300. This facilitates a more intuitive determination of the current maximum torque value of this embodiment and allows for more precise adjustment of the maximum torque value to the desired value.

[0064] like Figure 1 and Figure 4As shown, it should be noted that when the radial projection of the inner rotor magnet 210 completely overlaps with the outer rotor magnet 410, the zero mark of the scale 420 is flush with the end face of the first carrier 300 facing the outer bushing 100 along the axial direction. When the outer rotor magnet 410 is moved along the axial direction towards the outer bushing 100 along with the adjusting carrier 400 to reduce the maximum torque value of this embodiment, the scale 420 of the corresponding length will extend beyond the first carrier 300. This makes it easy to directly obtain the adjusted distance L through the scale value on the scale 420 that extends beyond the first carrier 300, and thus make it easy to intuitively determine the maximum torque value of this embodiment in the current state.

[0065] like Figure 1 and Figure 3 As shown, specifically, a second sealing element 313 is provided between the inner wall of the second through hole 311 and the side wall of the scale 420. The outer peripheral surface of the second sealing element 313 is fixed to the inner wall of the second through hole 311, and the inner peripheral surface of the second sealing element 313 seals against the side wall of the scale 420. The second sealing element 313 serves as a dustproof seal, preventing small particles of dust and other impurities from passing through the second through hole 311 and entering the interior of the first carrier 300.

[0066] like Figures 1 to 3 As shown, in some embodiments, a limiting part 540 is provided within the first carrier 300. The limiting part 540 is located at one end of the adjusting carrier 400 axially away from the outer bushing 100, and the axial projection of the adjusting carrier 400 at least partially overlaps with the limiting part 540. Because in this embodiment, rotating the adjusting screw 510 drives the outer rotor magnet 410 to move axially away from the outer bushing 100 along with the adjusting carrier 400, which can increase the maximum torque value of this embodiment, this embodiment ensures that when the adjusting carrier 400 moves to abut against the limiting part 540, the radial projection of the inner rotor magnet 210 completely overlaps with the outer rotor magnet 410 by providing the limiting part 540 within the first carrier 300 at one end of the adjusting carrier 400 away from the outer bushing 100.

[0067] like Figure 2 As shown, specifically, the limiting part 540 is provided with a mounting hole corresponding to the position of the adjusting screw 510. One end of the adjusting screw 510 is connected to the mounting hole through the first bearing 551, and the other end of the adjusting screw 510 is disposed in the first through hole 314 through the second bearing 552. The first bearing 551 and the second bearing 552 play the role of support and rotation, ensuring the smoothness of the adjusting screw 510 rotating around the axial direction.

[0068] like Figure 2As shown, specifically, a first sealing element 312 is provided between the inner wall of the first through hole 314 and the side wall of the adjusting screw 510. The outer peripheral surface of the first sealing element 312 is fixed to the inner wall of the second through hole 311, and the inner peripheral surface of the first sealing element 312 seals against the side wall of the adjusting screw 510. The first sealing element 312 is located at the end of the second bearing 552 facing the outer bushing 100. The first sealing element 312 plays a role in dust prevention and sealing, which helps to prevent small particles of dust and other impurities from entering the second bearing 552.

[0069] like Figure 2 As shown, specifically, a bearing limiting element 553 is provided on the inner wall of the mounting hole, and the bearing limiting element 553 abuts against the end face of the first bearing 551 facing the adjusting carrier 400 along the axial direction.

[0070] like Figure 6 and Figure 7 As shown, in some embodiments, the sidewall of the first carrier 300 is provided with a radially penetrating elongated through hole 321, and the outer peripheral surface of the adjusting carrier 400 is provided with a pushing part 430. The pushing part 430 passes through the elongated through hole 321 and extends to the outside of the first carrier 300. The pushing part 430 is slidably disposed in the elongated through hole 321 along the axial direction. The outer peripheral surface of the first carrier 300 is provided with a first mounting part and a second mounting part 322. The first mounting part and the second mounting part 322 are located at the two ends of the elongated through hole 321 along the axial direction. The first mounting part is located at one end of the second mounting part 322 facing the outer bushing 100 along the axial direction. The first mounting part is provided with a second threaded hole, and the second mounting part 322 is provided with a third threaded hole. The adjusting mechanism includes:

[0071] The first adjusting bolt 560 is threadedly connected to the second threaded hole, and the first adjusting bolt 560 is used to abut against the end of the pushing part 430 away from the second mounting part 322;

[0072] The second adjusting bolt 570 is threaded into the third threaded hole and is used to abut against the end of the pushing part 430 away from the first mounting part.

[0073] In this embodiment, the synchronous permanent magnet coupling is configured by sliding the pushing part 430 axially within the elongated through hole 321. The two ends of the pushing part 430 abut against the first adjusting bolt 560 and the second adjusting bolt 570, respectively. When the maximum torque value of this embodiment needs to be reduced, the first adjusting bolt 560 is first rotated to move it axially away from the pushing part 430, so that the axial distance between the first adjusting bolt 560 and the pushing part 430 reaches a set distance. Then, the second adjusting bolt 570 is rotated to move the second adjusting screw 510 axially toward the first adjusting bolt 560, thereby pushing the pushing part 430, the adjusting carrier 400, and the outer rotor magnet 410 together toward the first adjusting bolt 560 until the pushing part 430 abuts against the first adjusting bolt 560. This reduces the coupling area between the outer rotor magnet 410 and the inner rotor magnet 210, thus reducing the interaction force between them and decreasing the torque. The transmission is reduced, thus reducing the maximum torque value of this embodiment. When it is necessary to increase the maximum torque value of this embodiment, firstly, rotate the second adjusting bolt 570 to move the second adjusting bolt 570 away from the pushing part 430 along the axial direction, so that the distance between the second adjusting bolt 570 and the pushing part 430 along the axial direction reaches the set distance. Then, rotate the first adjusting bolt 560 to move the first adjusting screw 510 along the axial direction toward the second adjusting bolt 570, thereby pushing the pushing part 430, the adjusting carrier 400 and the outer rotor magnet 410 together toward the second adjusting bolt 570 until the pushing part 430 abuts the second adjusting bolt 570, thereby increasing the coupling area between the outer rotor magnet 410 and the inner rotor magnet 210, making the interaction force between the outer rotor magnet 410 and the inner rotor magnet 210 larger, increasing the torque transmission, and thus increasing the maximum torque value of this embodiment. The operation is convenient, and the first adjusting bolt 560 and the second adjusting bolt 570 are set externally, which is convenient for maintenance and replacement.

[0074] It should be noted that when the radial projection of the inner rotor magnet 210 completely overlaps with that of the outer rotor magnet 410 (i.e., the maximum torque value is adjusted to the highest value), the pushing part 430 abuts against the inner end wall of the elongated through hole 321 that is axially away from the outer bushing 100. Therefore, during the adjustment of the maximum torque value of this embodiment, by measuring the axial distance between the pushing part 430 and the inner end wall of the elongated through hole 321 that is axially away from the outer bushing 100, the adjusted distance L can be determined. This makes it easier to intuitively determine the current state of the maximum torque value of this embodiment, and is more conducive to accurately adjusting the maximum torque value of this embodiment to the required value.

[0075] It should be noted that in some embodiments, when the pushing part 430 abuts against the inner end wall of the elongated through hole 321 axially toward the outer bushing 100, the maximum torque value of this embodiment is adjusted to the minimum value, and the radial projection of the inner rotor magnet 210 overlaps with the outer rotor magnet 410. In other embodiments, when the pushing part 430 abuts against the inner end wall of the elongated through hole 321 axially toward the outer bushing 100, the radial projection of the inner rotor magnet 210 does not overlap with the outer rotor magnet 410.

[0076] To further improve the operational stability of the synchronous permanent magnet coupling in this embodiment, specifically, at least two first adjusting bolts 560 are provided, the number of first adjusting bolts 560 and second adjusting bolts 570 is the same, and the multiple first adjusting bolts 560 are evenly distributed circumferentially.

[0077] To further improve the operational stability of the synchronous permanent magnet coupling in this embodiment, specifically, the first adjusting bolt 560 and the second adjusting bolt 570 are coaxially arranged.

[0078] like Figure 6 and Figure 7 As shown, specifically, the adjustment mechanism further includes:

[0079] The first nut 561 is threaded to the first adjusting bolt 560 and is used to abut against the side of the first mounting part that is axially away from the second mounting part 322.

[0080] The second nut 571 is threaded to the second adjusting bolt 570 and is used to abut against the side of the second mounting part 322 that is axially opposite to the first mounting part.

[0081] In this embodiment, the synchronous permanent magnet coupling has a first nut 561 threadedly connected to the first adjusting bolt 560 and a second nut 571 threadedly connected to the second adjusting bolt 570. When the large torque value of this embodiment is adjusted to the required value and put into operation, the first nut 561 is rotated until it abuts against the side of the first mounting part to generate friction, and the second nut 571 is rotated until it abuts against the side of the second mounting part 322 to generate friction. This helps to prevent the first adjusting bolt 560 and the second adjusting bolt 570 from rotating relative to the first mounting part and the second mounting part 322 respectively due to external factors such as vibration, thereby improving the operational stability of the synchronous permanent magnet coupling in this embodiment.

[0082] It should be noted that, in the process of adjusting the maximum torque value of this embodiment, before rotating the first adjusting bolt 560, the first nut 561 is rotated first to separate the first nut 561 from the first mounting part; before rotating the second adjusting bolt 570, the second nut 571 is rotated first to separate the second nut 571 from the second mounting part 322.

[0083] In some embodiments, the first carrier 300 is detachably connected to the outer bushing 100 for assembling this embodiment.

[0084] like Figure 1 and Figure 3 As shown, specifically, the first carrier 300 includes a connecting disk 310 and a connecting cylinder 320 arranged coaxially. The adjusting carrier 400 is slidably disposed on the inner circumferential surface of the connecting cylinder 320 along the axial direction. The first through hole 314 and the second through hole 311 are both disposed on the connecting disk 310. The connecting disk 310 is detachably connected to the outer bushing 100 through the first connecting assembly.

[0085] Specifically, a connecting ring 110 is radially protruding from the outer circumferential surface of the outer bushing 100. The first connecting assembly includes a matching first internal threaded hole and a first fastening bolt. The first internal threaded hole is axially formed through the connecting ring 110 and the connecting disc 310. By providing the first internal threaded hole through the connecting ring 110 and the connecting disc 310, when the first carrier 300 needs to be assembled onto the outer bushing 100, it is only necessary to align the first internal threaded holes located on the connecting ring 110 and the connecting disc 310, and then tighten the first fastening bolt into the first internal threaded hole; when the first carrier 300 needs to be removed from the outer bushing 100, it is only necessary to unscrew the first fastening bolt from the first internal threaded hole.

[0086] Specifically, the connecting plate 310 and the connecting cylinder 320 are detachably connected via a second connecting assembly to allow the first carrier 300 to be assembled and disassembled for easy maintenance.

[0087] More specifically, the second connecting assembly includes a matching second internal threaded hole and a second fastening bolt. The second internal threaded hole is located on the end face of the connecting cylinder 320 facing the connecting disc 310. The connecting disc 310 is provided with a third through hole axially through the position corresponding to the second threaded hole. The third through hole is used for the second fastening bolt to pass through.

[0088] Specifically, the elongated through hole 321 and the second mounting part 322 are provided on the connecting cylinder 320, and the first mounting part and the connecting plate 310 are integrated.

[0089] In some embodiments, the outer wall of the end of the connecting sleeve 320 facing away from the connecting disk 310 is configured as an outer conical surface. The outer conical surface extends axially away from the connecting disk 310 and gradually slopes radially towards the axis of the connecting sleeve 320. The outer peripheral surface of the inner bushing 200 is axially slidably fitted with a mounting locking sleeve 600. The inner wall of the end of the mounting locking sleeve 600 facing the connecting disk 310 is configured as an inner conical surface. The inner conical surface and the outer conical surface form a conical fit. The outer peripheral surface of the inner bushing 200 is radially protruding with a positioning ring 220. The positioning ring 220 is located at the end of the mounting locking sleeve 600 facing the connecting disk 310 axially. A locking screw 221 is fixedly connected to the end of the positioning ring 220 facing the mounting locking sleeve 600. The mounting locking sleeve 600 is movably set through a fourth through hole. A locking screw 221 is threaded with a third nut 222, which is located at the end of the mounting locking sleeve 600 away from the positioning ring 220. A support screw 610 is threaded onto the mounting locking sleeve 600, which is arranged parallel to the axial direction. One end face of the support screw 610 abuts against the end face of the positioning ring 220. A fourth nut 620 is threaded onto the support screw 610, which is located at the end of the mounting locking sleeve 600 away from the positioning ring 220. A limiting baffle 230 is fitted on the outer circumferential surface of the inner bushing 200. The limiting baffle 230 is located at the end of the mounting locking sleeve 600 away from the positioning ring 220 along the axial direction, and the projection of the limiting baffle 230 along the axial direction partially overlaps with that of the mounting locking sleeve 600. By installing the locking sleeve 600 and the conical surface of the first carrier 300, the air gap A of the magnetic coupling between the outer rotor magnet 410 and the inner rotor magnet 210 in this embodiment is relatively uniform before installation. This solves the problem of the outer rotor magnet 410 and the inner rotor magnet 210 being eccentrically attracted together due to assembly errors, installation errors, uneven installation forces, and other factors.

[0090] It should be noted that, in this embodiment, after the coupling is installed on the motor shaft and the reducer shaft and the alignment operation is completed, the mounting locking sleeve 600 is axially moved a predetermined distance to the limiting baffle 230 by the support screw 610. This allows for precise control of the conical surface clearance, ensuring that the conical surface clearance is smaller than the magnetic coupling air gap, thus protecting the magnet. In particular, by setting the limiting baffle 230, deformation of the mounting locking sleeve 600 caused by inconsistent pushing distances of the mounting locking sleeve 600 by support screws 610 located at different circumferential positions can be effectively prevented. This reduces dynamic imbalance during rotation, ensuring trouble-free and long-life operation of the coupling, resulting in good safety and economy.

[0091] It should be noted that multiple support screws 610 and multiple locking screws 221 are alternately arranged along the circumference of the mounting locking sleeve 600. The locking screws 221 are connected to the positioning ring 220 by thread or rigid connection. The mounting locking sleeve 600 is fixed by a "pull and pull" method and is axially positioned by the limiting baffle 230. At the same time, a third nut 222 and a fourth nut 620 are respectively provided on the locking screws 221 and the support screws 610 for anti-loosening. The positioning and fixing method is more reliable.

[0092] Specifically, the outer diameter of the locking sleeve 600 is the same as the outer diameter of the connecting sleeve 320. With this setting, the radial alignment (coaxiality) of the synchronous permanent magnet coupling of this embodiment can be easily adjusted by using tools such as rulers or squeegees to check the outer circle during the installation process. The operation is simple and greatly saves installation time.

[0093] The assembly process in this embodiment is as follows: First, remove the outer bushing 100 from the first carrier 300 and install the outer bushing 100 on either the drive shaft or the load shaft. Then, install the inner bushing 200 on the other drive shaft or load shaft. At this time, the first carrier 300, adjusting carrier 400, inner bushing 200, mounting locking sleeve 600, outer rotor magnet 410, inner rotor magnet 210, and other components are magnetically coupled together to form a magnetic coupling body, which is then installed on the load shaft or drive shaft. Next, connect the outer bushing 100, along with the drive shaft or load shaft, to the magnetic coupling body. Then, adjust the coupling installation alignment by simultaneously clamping the first carrier with a ruler or straightedge. The outer cylindrical surface of the mounting locking sleeve 600 and the mounting locking sleeve 600 are used to adjust the coaxiality of the drive shaft and the load shaft. Then, the mounting locking sleeve 600 is separated by a conical surface. All the third nuts 222 and fourth nuts 620 at the support screw 610 and the locking screw 221 are removed. Several support screws 610 are screwed in, and the mounting locking sleeve 600 is pushed out to the limit baffle 230 for axial positioning according to a predetermined distance. At this time, the mounting locking sleeve 600 and the first carrier 300 form a conical surface gap. Then, all the third nuts 222 and fourth nuts 622 are locked to form an inward pulling locking force. At this point, the outer rotor and the inner rotor of the coupling have completely achieved non-contact transmission, and the installation is completed.

[0094] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A synchronous permanent magnet coupling coupling shafts for online adjustment of torque, characterized in that, include: Outer bushing (100); Inner bushing (200) is spaced apart at one end of outer bushing (100) along the axial direction; The first carrier (300) is coaxially disposed at one end of the outer bushing (100) facing the inner bushing (200) along the axial direction; The adjusting carrier (400) is slidably disposed on the inner circumferential surface of the first carrier (300) and is driven to move axially by the adjusting mechanism; An outer rotor magnet (410) is disposed on the inner circumferential surface of the adjusting carrier (400); An inner rotor magnet (210) is disposed on the outer peripheral surface of the portion of the inner bushing (200) extending into the first carrier (300). The inner rotor magnet (210) is disposed correspondingly to the outer rotor magnet (410). An air gap is provided between the inner rotor magnet (210) and the outer rotor magnet (410) in the radial direction.

2. The online adjustable torque synchronous permanent magnet coupling of claim 1, wherein, The adjusting carrier (400) has a first threaded hole formed through it along the axial direction. The adjusting mechanism includes an adjusting screw (510), which is rotatably disposed in the first carrier (300) about the axial direction. The adjusting carrier (400) is threadedly connected to the adjusting screw (510) through the first threaded hole.

3. The online adjustable torque synchronous permanent magnet coupling of claim 2, wherein, The adjusting screw (510) extends axially toward one end of the outer bushing (100) to the outside of the first carrier (300) and is configured as a force-applying part (511).

4. The online adjustable torque synchronous permanent magnet coupling of claim 3, wherein, The adjustment mechanism further includes a locking assembly having a locked state that locks the adjustment screw (510) to the first carrier (300) and an unlocked state that allows the adjustment screw (510) to rotate relative to the first carrier (300).

5. The online adjustable torque synchronous permanent magnet coupling of claim 4, wherein, The outer peripheral surface of the force-applying part (511) is provided with a threaded part, and the locking assembly includes a locking element (520) threadedly connected to the threaded part.

6. The online adjustable torque synchronous permanent magnet coupling of claim 4, wherein, The first carrier (300) has a first through hole (314) through the position corresponding to the adjusting screw (510). The portion of the adjusting screw (510) located in the first through hole (314) has a plug hole arranged radially. The side wall of the first carrier (300) has a through hole through the position corresponding to the plug hole. The through hole communicates with the first through hole (314). The locking assembly includes a plug-in locking part (530), which is used to be detachably plugged into the through hole and the plug hole.

7. The online adjustable torque synchronous permanent magnet coupling of claim 1, wherein, The adjustment carrier (400) is provided with a scale (420) at one end along the axial direction. The first carrier (300) is provided with a second through hole (311) corresponding to the position of the scale (420). The second through hole (311) is used for the scale (420) to move through.

8. The online adjustable torque synchronous permanent magnet coupling of any one of claims 1 to 7, wherein, The first carrier (300) is provided with a limiting part (540), the limiting part (540) is located at one end of the adjusting carrier (400) away from the outer bushing (100) along the axial direction, and the projection of the adjusting carrier (400) along the axial direction at least partially overlaps with the limiting part (540).

9. The online adjustable torque synchronous permanent magnet coupling of claim 1, wherein, The first carrier (300) has a radially penetrating elongated through hole (321) on its sidewall. The adjusting carrier (400) has a pushing part (430) on its outer peripheral surface. The pushing part (430) passes through the elongated through hole (321) and extends to the outside of the first carrier (300). The pushing part (430) is slidably disposed in the elongated through hole (321) along the axial direction. The outer peripheral surface of the first carrier (300) has a first mounting part and a second mounting part (322) protruding. The first mounting part and the second mounting part (322) are located at both ends of the elongated through hole (321) along the axial direction. The first mounting part is located at one end of the second mounting part (322) along the axial direction toward the outer bushing (100). The first mounting part has a second threaded hole penetrating through it, and the second mounting part (322) has a third threaded hole penetrating through it. The adjusting mechanism includes: The first adjusting bolt (560) is threaded into the second threaded hole, and the first adjusting bolt (560) is used to abut against the end of the pushing part (430) away from the second mounting part (322); The second adjusting bolt (570) is threaded into the third threaded hole and is used to abut against the end of the push part (430) away from the first mounting part.

10. The online adjustable torque synchronous permanent magnet coupling of claim 9, wherein, The adjustment mechanism further includes: The first nut (561) is threaded to the first adjusting bolt (560) and is used to abut against the side of the first mounting part that is axially opposite to the second mounting part (322); The second nut (571) is threaded to the second adjusting bolt (570) and is used to abut against the side of the second mounting part (322) axially away from the first mounting part.

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