A wide-range torque-adjustable magnetic coupler

Abstract

This invention provides a wide-range torque-adjustable magnetic coupler, relating to the field of magnetic coupler technology. It includes an outer magnet cover and an outer magnet cylinder. An output shaft is fixedly installed on the axis of the outer magnet cover away from the outer magnet cylinder. Driven by an adjusting mechanism, the outer magnet cylinder slides and extends relative to the outer magnet cover to adjust the distance between them. An inner magnet is disposed within the magnetic coupling chamber. The installation distance between several middle cylindrical inner magnets and the inner magnet mounting bracket is adjustable. This invention not only adjusts the air gap between the inner and outer magnets but also adjusts the angles of the top and bottom disc magnets, thereby changing the corresponding area of ​​the magnets. The superposition of these multiple adjusting mechanisms enables richer and more precise torque intensity adjustment, making it particularly suitable for high-strength magnetic couplers requiring a wide range of torque adjustments.

Description

Technical Field

[0001] This invention relates to the field of magnetic coupler technology, specifically a wide-range torque-adjustable magnetic coupler. Background Technology

[0002] A prior art magnetic torque-adjustable permanent magnet synchronous coupling, disclosed in publication number CN115549431A, includes a driving rotor section, a driven rotor section, a support mechanism, a magnetic adjustment mechanism, and an adjustment execution mechanism. The driving rotor section is connected to the drive system, and the driven rotor section is connected to the load system. Torque is transmitted between the driving and driven rotor sections through the coupling force between permanent magnets. The support mechanism includes bearing seats on both sides and bearings to provide support for the driving and driven rotors. The magnetic adjustment mechanism controls the linear movement of a slider on a ball screw, thereby driving the adjustment execution mechanism. The adjustment execution mechanism mainly consists of three magnets, controlling the coupling area between the driving and driven rotors, thus controlling the torque transmitted by the permanent magnet synchronous coupling. This device achieves torque transmission and adjustment through magnetic force, eliminating the disadvantages of friction couplings such as friction plate adhesion and wear. Furthermore, the axial misalignment distance of the permanent magnets is essentially linearly related to the rated transmission torque. This invention has advantages such as high reliability, smooth adjustment, and strong applicability, and can be widely used in industrial production.

[0003] However, the device still has some obvious defects in use: although the device can adjust the torque, the adjustment method of the magnetic coupling is relatively simple. Like the prior art, the magnetic coupler usually uses unidirectional air gap adjustment to adjust the coupling strength. This adjustment method is common, but since the strength of magnetic coupling decreases sharply with the increase of air gap, the adjustment method in the prior art is relatively limited and it is difficult to make more precise torque adjustment. Summary of the Invention

[0004] The purpose of this invention is to provide a wide-range torque-adjustable magnetic coupler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wide-range torque-adjustable magnetic coupler, comprising:

[0007] The outer magnet cover has a number of top disc magnets and upper cylindrical magnets arranged in a circular array on its top and inner sidewalls, respectively.

[0008] The outer magnetic steel cylinder has several lower cylindrical magnets arranged in a ring array on the inner side wall of the outer magnetic steel cylinder, and several bottom disc magnets are installed on the side of the outer magnetic steel cylinder away from the outer magnetic steel top cover.

[0009] An output shaft is fixedly installed at the axis on the side of the outer magnet cover away from the outer magnet cylinder. The outer magnet cylinder slides and extends relative to the outer magnet cover under the drive of the adjusting mechanism to adjust the distance between the two. A hollow magnetic coupling chamber is formed inside the outer magnet cover and the outer magnet cylinder. The outer magnet cover and the outer magnet cylinder rotate synchronously around the axis of the output shaft.

[0010] An inner magnet, disposed within a magnetic coupling chamber, comprises an inner magnet mounting frame, several central cylindrical inner magnets, several top inner magnets fixedly disposed on the upper and lower sides, and a bottom inner magnet. The mounting spacing between the central cylindrical inner magnets and the inner magnet mounting frame is adjustable, thereby adjusting the air gap between the central cylindrical inner magnets and the upper and lower cylindrical magnets. An input shaft is also fixedly inserted at the axis of the inner magnet mounting frame, extending outward from the side of the inner magnet away from the output shaft.

[0011] Several top and bottom disc magnets are slidably disposed in the grooves opened in the outer magnet cover and the outer magnet cylinder, respectively. Several top and bottom disc magnets are connected to sliding mechanisms that are arranged in a one-to-one correspondence. The sliding mechanisms drive the top and bottom disc magnets to rotate and slide synchronously within a preset angle range. The top and bottom disc magnets slide in the same direction and keep their projections on opposite sides of the top and bottom sides overlapping.

[0012] Preferably, the inner magnet mounting frame consists of a frame body and sliding groove frames arranged in a ring array on the upper and lower sides. Several of the central cylindrical inner magnets cooperate with the sliding groove frames through fixedly connected sliding rods. The sliding groove frames and sliding rods are provided with corresponding fixing holes, and the sliding rods are connected and fixed to the sliding groove frames by inserting pins.

[0013] Preferably, the adjusting mechanism includes a lifting platform, with lifting screws and auxiliary slides respectively provided on both sides of the lifting platform. The lifting screws on both sides are fixedly connected to the drive shaft of the adjusting motor. The same lifting plate is installed on the lifting screws and auxiliary slides. The lifting plates on both sides are fixedly connected to the same bearing mounting ring. An outer magnet yoke is also fixedly installed on the outer magnet cylinder. A bearing is provided between the outer magnet yoke and the bearing mounting ring. The lifting platform and the outer magnet cover are fixedly installed. The rotation of the adjusting motor drives the outer magnet cylinder to slide and extend relative to the outer magnet cover.

[0014] Preferably, a sliding rod telescopic block is installed in a circular array on the outer side of the outer magnet cover, and a lifting sliding rod is telescopically arranged inside the sliding rod telescopic block, and the lifting sliding rod is fixedly connected to the outer magnet yoke plate.

[0015] Preferably, the inner magnet mounting bracket is also rotatably mounted with an inner magnet sliding positioning groove on the side near the top inner magnet via a rotary bearing. The inner magnet sliding positioning groove has an annular array of arc-shaped positioning grooves that run vertically through it. A positioning block is fixedly mounted on the sliding rod. The positioning block near the inner magnet sliding positioning groove passes through the arc-shaped positioning groove from bottom to top to complete the positioning.

[0016] Preferably, end connecting blocks are fixedly installed at both ends of the central cylindrical inner magnet. The top inner magnet and the bottom inner magnet are fixedly connected to the end connecting blocks and positioning blocks through the opened assembly slots, thereby completing the fixed installation of the top inner magnet and the bottom inner magnet.

[0017] Preferably, the sliding mechanism includes an upper arc-shaped telescopic cylinder and a lower arc-shaped telescopic cylinder. The upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder are respectively fixedly installed on the outer magnet cover and the outer magnet cylinder. Both the upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder are connected to the pumping mechanism through pipes. The pumping mechanism performs pumping operation synchronously, so that the sliding rods of the upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder move synchronously.

[0018] Preferably, the pumping mechanism comprises a sliding rod telescopic block and a lifting sliding rod. The lifting sliding rod has a thin rod portion located within the sliding rod telescopic block. The thin rod portion is also inserted into a fixedly installed isolation baffle. The isolation baffle divides the space formed by the thin rod portion and the sliding rod telescopic block into an upper pumping compartment and a lower pumping compartment. The upper and lower pumping compartments are respectively connected to an upper arc-shaped telescopic cylinder and a lower arc-shaped telescopic cylinder via pipelines. During the lifting and lowering sliding of the lifting sliding rod, the upper and lower pumping compartments alternately perform pumping and extraction operations. The pumping port of the upper arc-shaped telescopic cylinder is located at the tail end of the cylinder body, and the pumping port of the lower arc-shaped telescopic cylinder is located at the front end of the cylinder body, thereby ensuring that the upper and lower arc-shaped telescopic cylinders perform synchronous telescopic movements.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention employs a multi-dimensional adjustment method, which can not only adjust the air gap between the inner and outer magnets, but also adjust the air gap between the upper and lower end magnets, and adjust the angles of the top and bottom disc magnets, thereby changing the corresponding area of ​​the magnets. The superposition of the above-mentioned multiple adjustment mechanisms can achieve richer and more precise torque intensity adjustment, and is especially suitable for high-strength magnetic couplers that require a wide range of torque adjustment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2This is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 This is a partial cross-sectional view of the outer magnet cover and outer magnet cylinder of the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of the overall structure of the internal magnet of the present invention;

[0025] Figure 5 This is a three-dimensional schematic diagram of the overall structure of the inner magnet mounting bracket of the present invention;

[0026] Figure 6 This is a three-dimensional schematic diagram of the central cylindrical inner magnet connection structure of the present invention;

[0027] Figure 7 This is a top view of the outer magnetic steel cylinder structure of the present invention;

[0028] Figure 8 This is a bottom view of the outer magnetic steel cylinder structure of the present invention;

[0029] Figure 9 This is a schematic diagram illustrating the extension and retraction states of the upper and lower arc-shaped telescopic cylinders of the present invention.

[0030] In the diagram: 1. Outer magnet cover; 2. Top disc magnet; 3. Upper cylindrical magnet; 4. Outer magnet cylinder; 5. Lower cylindrical magnet; 6. Bottom disc magnet; 7. Output shaft; 8. Magnetic coupling chamber; 9. Inner magnet; 10. Inner magnet mounting bracket; 11. Middle cylindrical inner magnet; 12. Top inner magnet; 13. Bottom inner magnet; 14. Input shaft; 15. Slide groove; 16. Frame; 17. Sliding groove frame; 18. Sliding rod; 19. Fixing hole; 20. Lifting platform; 2 1. Lifting screw, 22. Auxiliary slide bar, 23. Adjustable pitch motor, 24. Lifting plate, 25. Bearing mounting ring, 26. Outer magnet yoke plate, 27. Bearing, 28. Slide bar telescopic block, 29. Lifting slide bar, 30. Inner magnet sliding positioning groove plate, 31. Arc-shaped positioning groove, 32. Positioning block, 33. End connecting block, 34. Upper arc-shaped telescopic cylinder, 35. Lower arc-shaped telescopic cylinder, 36. Thin rod section, 37. Isolation baffle, 38. Upper pumping compartment, 39. Lower pumping compartment. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-9 The present invention provides a technical solution:

[0033] Example 1:

[0034] A wide-range torque-adjustable magnetic coupler, comprising:

[0035] The outer magnet cover 1 has a number of top disc magnets 2 and upper cylindrical magnets 3 arranged in a circular array on its top and inner side walls, respectively.

[0036] The outer magnetic steel cylinder 4 has several lower cylindrical magnets 5 arranged in a ring array on the inner side wall of the outer magnetic steel cylinder 4, and several bottom disc magnets 6 are installed on the side of the outer magnetic steel cylinder 4 away from the outer magnetic steel cover 1.

[0037] An output shaft 7 is fixedly installed at the axis on the side of the outer magnet cover 1 away from the outer magnet cylinder 4. Under the drive of the adjustment mechanism, the outer magnet cylinder 4 slides and extends relative to the outer magnet cover 1 to adjust the distance between the two. A hollow magnetic coupling chamber 8 is formed inside the outer magnet cover 1 and the outer magnet cylinder 4. The outer magnet cover 1 and the outer magnet cylinder 4 rotate synchronously around the axis of the output shaft 7.

[0038] An inner magnet 9 is disposed within the magnetic coupling chamber 8. The inner magnet 9 includes an inner magnet mounting frame 10, several middle cylindrical inner magnets 11, several top inner magnets 12 fixedly disposed on the upper and lower sides, and a bottom inner magnet 13. The installation distance between the middle cylindrical inner magnets 11 and the inner magnet mounting frame 10 is adjustable, thereby adjusting the air gap distance between the middle cylindrical inner magnets 11 and the upper cylindrical magnets 3 and lower cylindrical magnets 5. An input shaft 14 is also fixedly inserted at the axis of the inner magnet mounting frame 10, extending outward from the side of the inner magnet 9 away from the output shaft 7.

[0039] Several top disc magnets 2 and bottom disc magnets 6 are respectively slidably disposed in the sliding grooves 15 opened in the outer magnet cover 1 and the outer magnet cylinder 4. Several top disc magnets 2 and bottom disc magnets 6 are respectively connected to sliding mechanisms that are arranged one-to-one. The sliding mechanisms drive the top disc magnets 2 and bottom disc magnets 6 to rotate and slide synchronously within a preset angle range. The top disc magnets 2 and bottom disc magnets 6 slide in the same direction and keep the projections of their opposite sides overlapping.

[0040] In this embodiment, the outer magnet is composed of an outer magnet cover 1 and an outer magnet cylinder 4, which can synchronously rotate around a fixed axis to transmit the torque input by the inner magnet 9. The outer magnet cover 1 is fixedly installed, and the outer magnet cylinder 4 can change the distance between itself and the outer magnet cover 1 through telescoping, thereby adjusting the distance between the bottom inner magnet 13 and the bottom disc magnet 6 in the inner magnet 9, and thus adjusting the coupling strength between them. By setting magnets at both ends and around the inner magnet 9, and also setting magnets at corresponding positions on the outer magnet cover 1 and the outer magnet cylinder 4, the coupling strength can be further improved. This arrangement is particularly suitable for large... Under torque conditions, the spacing of the middle cylindrical inner magnet 11 can be adjusted, thereby changing the air gap between the middle cylindrical inner magnet 11 and the upper cylindrical magnet 3 and the lower cylindrical magnet 5. Furthermore, the top disc magnet 2 and the bottom disc magnet 6 can rotate and slide within a preset angle range. This setting can change the coupling area between the top disc magnet 2, the bottom disc magnet 6 and the corresponding top inner magnet 12 and bottom inner magnet 13, thereby changing the coupling strength. Through the above settings, a richer and more precise torque strength adjustment can be achieved, which is especially suitable for high-strength magnetic couplers that require a wide range of torque adjustments.

[0041] Example 2:

[0042] The inner magnet mounting frame 10 consists of a frame body 16 and sliding groove frames 17 arranged in a ring on the upper and lower sides. Several central cylindrical inner magnets 11 are connected to the sliding groove frames 17 by sliding rods 18. The sliding groove frames 17 and the sliding rods 18 are provided with corresponding fixing holes 19. The sliding rods 18 are connected and fixed to the sliding groove frames 17 by inserting pins.

[0043] In this embodiment, a mounting mechanism for several central cylindrical inner magnets 11 is further disclosed, and the telescopic length of the central cylindrical inner magnets 11 is adjusted by sliding the sliding rod 18 within the sliding groove frame 17.

[0044] Example 3:

[0045] The pitch adjustment mechanism includes a lifting platform 20. Lifting screws 21 and auxiliary slide rods 22 are respectively provided on both sides of the lifting platform 20. The lifting screws 21 on both sides are fixedly connected to the drive shaft of the pitch adjustment motor 23. The same lifting plate 24 is installed on the lifting screws 21 and the auxiliary slide rods 22. The lifting plates 24 on both sides are fixedly connected to the same bearing mounting ring 25. An outer magnetic steel yoke 26 is also fixedly installed on the outer magnetic steel cylinder 4. A bearing 27 is provided between the outer magnetic steel yoke 26 and the bearing mounting ring 25. The lifting platform 20 and the outer magnetic steel cover 1 are fixedly set. The rotation of the pitch adjustment motor 23 drives the outer magnetic steel cylinder 4 to slide and extend relative to the outer magnetic steel cover 1. The outer magnetic steel yoke 26 is fixedly connected to the outer magnetic steel cylinder 4.

[0046] In this embodiment, a mechanism for driving the outer magnet cylinder 4 to perform telescopic movement is further disclosed. The rotation of the adjustable motor 23 drives the lifting plate 24 to rise and fall. The rise and fall of the lifting plate 24 drives the bearing mounting ring 25 to rise and fall. The rise and fall of the bearing mounting ring 25 drives the outer magnet yoke 26 and the outer magnet cylinder 4 fixedly connected to it to rise and fall, thereby completing the telescopic translation and sliding of the outer magnet cylinder 4 relative to the outer magnet cover 1.

[0047] Example 4:

[0048] The outer side of the outer magnet cover 1 is equipped with a ring array of sliding rod telescopic blocks 28, and a lifting slide rod 29 is provided inside the sliding rod telescopic blocks 28. The lifting slide rod 29 is fixedly connected to the outer magnet yoke plate 26.

[0049] The inner magnet mounting bracket 10 has an inner magnet sliding positioning groove 30 mounted on the side of the inner magnet 12 near the top via a rotary bearing. The inner magnet sliding positioning groove 30 has an arc-shaped positioning groove 31 that runs vertically through it in a circular array. A positioning block 32 is fixedly mounted on the sliding rod 18. The positioning block 32 on the side of the inner magnet sliding positioning groove 30 passes through the arc-shaped positioning groove 31 from bottom to top to complete the positioning.

[0050] The two ends of the central cylindrical inner magnet 11 are also fixedly installed with end connecting blocks 33. The top inner magnet 12 and the bottom inner magnet 13 are fixedly connected to the end connecting blocks 33 and the positioning blocks 33 through the opening of the assembly slot, thereby completing the fixed installation of the top inner magnet 12 and the bottom inner magnet 13.

[0051] In this embodiment, a related auxiliary connection mechanism is further disclosed. The installation of the corresponding structure can be completed through the setting of the above mechanism. The specific connection method is shown in the accompanying drawings.

[0052] Example 5:

[0053] The sliding mechanism includes an upper arc-shaped telescopic cylinder 34 and a lower arc-shaped telescopic cylinder 35. The upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 are respectively fixedly installed on the outer magnet cover 1 and the outer magnet cylinder 4. The upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 are connected to the pumping mechanism through pipes. The pumping mechanism performs pumping operation synchronously, so that the sliding rods of the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 move synchronously.

[0054] The pumping mechanism consists of a sliding rod telescopic block 28 and a lifting sliding rod 29. The lifting sliding rod 29 has a thin rod portion 36 located inside the sliding rod telescopic block 28. The thin rod portion 36 is also inserted into a fixedly installed isolation baffle 37. The isolation baffle 37 divides the space formed by the thin rod portion 36 and the sliding rod telescopic block 28 into an upper pumping compartment 38 and a lower pumping compartment 39. The upper pumping compartment 38 and the lower pumping compartment 39 are respectively connected to the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 through pipelines. During the lifting and lowering sliding process of the lifting sliding rod 29, the upper pumping compartment 38 and the lower pumping compartment 39 alternately perform pumping and extraction operations. The pumping port of the upper arc-shaped telescopic cylinder 34 is located at the tail end of the cylinder body, and the pumping port of the lower arc-shaped telescopic cylinder 35 is located at the front end of the cylinder body, thereby ensuring that the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 perform synchronous telescopic movements.

[0055] In this embodiment, the specific structure of the sliding mechanism that drives the top disc magnet 2 and the bottom disc magnet 6 to rotate within a preset angle range is further disclosed. The ends of the telescopic rods in the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 are fixedly connected to the corresponding top disc magnet 2 and bottom disc magnet 6. Their telescopic movement enables the sliding of the top disc magnet 2 and the bottom disc magnet 6. The telescopic movement of the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 is synchronized with the telescopic movement of the sliding rod telescopic block 28 and the lifting sliding rod 29. Furthermore, the number of combinations of the sliding rod telescopic block 28 and the lifting sliding rod 29 is the same as the number of combinations of the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35, thereby enabling one set of sliding rod telescopic blocks 28 and the lifting sliding rod 29 to control a corresponding set of upper arc-shaped telescopic cylinders 34 and lower arc-shaped telescopic cylinders 35. (See attached specification). Figure 9 The pump inlet of the upper arc-shaped telescopic cylinder 34 is located at the tail end of the cylinder body, and the pump inlet of the lower arc-shaped telescopic cylinder 35 is located at the front end of the cylinder body. The significance of this arrangement is that during the lifting and sliding process of the lifting slide bar 29, the telescopic arms of the upper arc-shaped telescopic cylinder 34 and the lower arc-shaped telescopic cylinder 35 can move synchronously and in the same direction, so that the top disc magnet 2 and the bottom disc magnet 6 can keep their projections on opposite sides overlapping. The purpose of this arrangement is to ensure that the movement of the top disc magnet 2 and the bottom disc magnet 6 is synchronized, thereby providing a prerequisite for precise torque control.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wide-range torque-adjustable magnetic coupler, characterized in that, include: The outer magnet cover has a number of top disc magnets and upper cylindrical magnets arranged in a circular array on its top and inner sidewalls, respectively. The outer magnetic steel cylinder has several lower cylindrical magnets arranged in a ring array on the inner side wall of the outer magnetic steel cylinder, and several bottom disc magnets are installed on the side of the outer magnetic steel cylinder away from the outer magnetic steel top cover. An output shaft is fixedly installed at the axis on the side of the outer magnet cover away from the outer magnet cylinder. The outer magnet cylinder slides and extends relative to the outer magnet cover under the drive of the adjusting mechanism to adjust the distance between the two. A hollow magnetic coupling chamber is formed inside the outer magnet cover and the outer magnet cylinder. The outer magnet cover and the outer magnet cylinder rotate synchronously around the axis of the output shaft. An inner magnet, disposed within a magnetic coupling chamber, comprises an inner magnet mounting frame, several central cylindrical inner magnets, several top inner magnets fixedly disposed on the upper and lower sides, and a bottom inner magnet. The mounting spacing between the central cylindrical inner magnets and the inner magnet mounting frame is adjustable, thereby adjusting the air gap between the central cylindrical inner magnets and the upper and lower cylindrical magnets. An input shaft is also fixedly inserted at the axis of the inner magnet mounting frame, extending outward from the side of the inner magnet away from the output shaft. Several top and bottom disc magnets are slidably disposed in the grooves opened in the outer magnet cover and the outer magnet cylinder, respectively. Several top and bottom disc magnets are connected to sliding mechanisms that are arranged in a one-to-one correspondence. The sliding mechanisms drive the top and bottom disc magnets to rotate and slide synchronously within a preset angle range. The top and bottom disc magnets slide in the same direction and keep their projections on opposite sides of the top and bottom sides overlapping.

2. The wide-range torque-adjustable magnetic coupler according to claim 1, characterized in that: The inner magnet mounting frame consists of a frame body and sliding groove frames arranged in a ring on the upper and lower sides. Several of the central cylindrical inner magnets cooperate with the sliding groove frames through fixedly connected sliding rods. The sliding groove frames and sliding rods are provided with corresponding fixing holes. The sliding rods are connected and fixed to the sliding groove frames by inserting pins.

3. The wide-range torque-adjustable magnetic coupler according to claim 2, characterized in that: The adjusting mechanism includes a lifting platform, on both sides of which are respectively provided a lifting screw and an auxiliary slide rod. The lifting screws on both sides are fixedly connected to the drive shaft of the adjusting motor. The same lifting plate is installed on the lifting screw and the auxiliary slide rod. The lifting plates on both sides are fixedly connected to the same bearing mounting ring. An outer magnet yoke is also fixedly installed on the outer magnet cylinder. A bearing is provided between the outer magnet yoke and the bearing mounting ring. The lifting platform and the outer magnet cover are fixedly installed. The rotation of the adjusting motor drives the outer magnet cylinder to slide and extend relative to the outer magnet cover.

4. A wide-range torque-adjustable magnetic coupler according to claim 3, characterized in that: The outer side of the outer magnet cover is equipped with a circular array of sliding rod telescopic blocks, and a lifting sliding rod is telescopically installed inside the sliding rod telescopic blocks. The lifting sliding rod is fixedly connected to the outer magnet yoke plate.

5. A wide-range torque-adjustable magnetic coupler according to claim 4, characterized in that: The inner magnet mounting bracket also has an inner magnet sliding positioning slot plate rotatably mounted on the side of the inner magnet near the top inner magnet via a rotary bearing. The inner magnet sliding positioning slot plate has an annular array of arc-shaped positioning slots that run vertically through it. A positioning block is fixedly mounted on the sliding rod. The positioning block near the inner magnet sliding positioning slot plate passes through the arc-shaped positioning slot from bottom to top to complete the positioning.

6. A wide-range torque-adjustable magnetic coupler according to claim 5, characterized in that: Both ends of the central cylindrical inner magnet are fixedly installed with end connecting blocks. The top inner magnet and the bottom inner magnet are fixedly connected to the end connecting blocks and positioning blocks through the opened assembly slots, thereby completing the fixed installation of the top inner magnet and the bottom inner magnet.

7. A wide-range torque-adjustable magnetic coupler according to claim 6, characterized in that: The sliding mechanism includes an upper arc-shaped telescopic cylinder and a lower arc-shaped telescopic cylinder. The upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder are respectively fixedly installed on the outer magnet cover and the outer magnet cylinder. The upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder are connected to the pumping mechanism through pipes. The pumping mechanism performs pumping operation synchronously, so that the sliding rods of the upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder move synchronously.

8. A wide-range torque-adjustable magnetic coupler according to claim 7, characterized in that: The pumping mechanism consists of a sliding rod telescopic block and a lifting sliding rod. The lifting sliding rod has a thin rod section inside the sliding rod telescopic block, and the thin rod section is also inserted into a fixed isolation baffle. The isolation baffle divides the space formed by the thin rod section and the sliding rod telescopic block into an upper pumping compartment and a lower pumping compartment. The upper pumping compartment and the lower pumping compartment are respectively connected to the upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder through pipelines. During the lifting and lowering sliding process of the lifting sliding rod, the upper pumping compartment and the lower pumping compartment alternately perform pumping and extraction operations. The pumping port of the upper arc-shaped telescopic cylinder is located at the tail end of the cylinder body, and the pumping port of the lower arc-shaped telescopic cylinder is located at the front end of the cylinder body, thereby ensuring that the upper arc-shaped telescopic cylinder and the lower arc-shaped telescopic cylinder perform synchronous telescopic movements.

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