Modularized hoisting permanent magnet and hoisting equipment

Abstract

The utility model provides a modularized hoisting permanent magnet and hoisting equipment, and belongs to the technical field of hoisting, the modularized hoisting permanent magnet comprises a plurality of magnetic disk assemblies, the magnetic disk assemblies are detachably connected in sequence through connecting pieces, crank arms used for opening or closing a permanent magnetic field are arranged on the same side faces of the plurality of magnetic disk assemblies, and the crank arms are connected with the magnetic disk assemblies. The crank arms on the same side face of every two adjacent magnetic disk assemblies are connected through a connecting rod. The driving assembly is connected to the magnetic disk assembly, the driving assembly is provided with a driving shaft, and the driving shaft is connected with a crank arm of the magnetic disk assembly through a transmission assembly; the modularized hoisting permanent magnet is provided with a plurality of modularized magnetic disk assemblies, and a proper number of magnetic disk assemblies can be selected for assembly according to the specifications of articles, so that the application range is wider; in addition, due to the fact that the magnetic disk assemblies are detachable, the transportation difficulty can be lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting, in particular to a modular lifting permanent magnet and a lifting device. Background Art

[0002] Lifting permanent magnet is a kind of equipment which uses rare earth aluminum iron boron as magnetic source and the principle of mutual attraction and repulsion of magnetic poles to lift and transport steel.

[0003] For example, Chinese patent document CN217102643U discloses a permanent magnetic lifting device with a magnetic field automatic locking function, which has a magnetic shaft box with a magnetic shaft inside. The motor drives the magnetic shaft to rotate through a gear transmission mechanism, thereby opening or closing the magnetic field.

[0004] However, in the above scheme, the magnetic axle box is connected to the object to be lifted, and the bottom surface size of the magnetic axle box is fixed, so it can only be used to lift objects of a certain size. When used to lift larger objects, due to their large size and weight, there are great difficulties in the transportation process. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the small application range of the lifting permanent magnet in the prior art, thereby providing a modular lifting permanent magnet and a lifting device.

[0006] In order to solve the above technical problems, the utility model provides a modular lifting permanent magnet, comprising:

[0007] A disk assembly, wherein the disk assembly comprises a plurality of disk assemblies which are sequentially detachably connected by a connecting piece, a crank arm for opening or closing a permanent magnetic field is provided on the same side of the plurality of disk assemblies, and the crank arms on the same side of two adjacent disk assemblies are connected by a connecting rod;

[0008] The drive assembly is connected to the disk assembly, and the drive assembly has a drive shaft, and the drive shaft is connected to the crank arm of the disk assembly through a transmission assembly.

[0009] Optionally, the driving assembly includes: a gear box, the driving shaft is arranged in the gear box, and the gear box is connected to an angle sensor, and the angle sensor is used to detect the rotation angle of the driving shaft.

[0010] Optionally, the disk assembly has two groups of permanent magnet shafts arranged in parallel and symmetrically, and the two protruding ends of the two groups of permanent magnet shafts are respectively connected to crank arms, and the gear box has two symmetrically arranged drive shafts, each of which is used to drive one crank arm.

[0011] Optionally, the transmission assembly includes: a driving gear, the driving gear is connected to the driving shaft, and the crank arm on the disk assembly has an external tooth structure for meshing and transmitting with the driving gear.

[0012] Optionally, the crank arm with an external tooth structure is a sector gear having a diameter larger than that of the driving gear.

[0013] Optionally, a plurality of the disk assemblies have mating surfaces that fit each other, and the mating surfaces have concave-convex limiting structures.

[0014] Optionally, the limiting structure includes: a limiting convex strip extending along the height direction of the disk assembly and a limiting groove cooperating with the limiting convex strip, and the limiting convex strip and / or the limiting groove have at least two symmetrically arranged on one of the matching surfaces.

[0015] The utility model provides a lifting device, comprising: a lifting component and a modular lifting permanent magnet described in any one of the above schemes, wherein the magnetic disk component of the modular lifting permanent magnet is fixedly connected to the lifting component, and the lifting component is used to be connected to a sling.

[0016] Optionally, the lifting assembly includes: a mounting plate, the mounting plate is vertically connected to the side of the disk assembly, and the top end of the mounting plate has a first connecting ear for connecting the tension sensor and the lifting ring.

[0017] Optionally, the lifting assembly comprises: a connection seat, the connection seat is connected to the top surface of the disk assembly, and after a plurality of the disk assemblies are assembled, two of the connection seats are symmetrically connected to both sides of the disk assembly for connecting with the drive assembly;

[0018] The modular lifting permanent magnets have at least two groups arranged in parallel and at intervals, the connecting seats on the two groups of modular lifting permanent magnets are connected by a suspension beam, the suspension beams have two symmetrically arranged beams, a plurality of suspension beam supports are connected between the two suspension beams, and the suspension beams have a second connecting ear for connecting a tension sensor and a suspension ring.

[0019] The technical solution of the utility model has the following advantages:

[0020] 1. The modular lifting permanent magnet provided by the utility model has multiple modular disk assemblies, and a suitable number of disk assemblies can be selected and assembled according to the specifications of the items, thereby having a wider range of applications; and, since the multiple disk assemblies are detachable, the difficulty of transportation can be reduced.

[0021] 2. The modular lifting permanent magnet provided by the utility model has the crank arms between two adjacent disk assemblies connected by a connecting rod, thereby realizing synchronous opening and closing of the permanent magnetic fields of multiple disk assemblies.

[0022] 3. The lifting device provided by the utility model adopts the above-mentioned modular lifting permanent magnet, so it has all its advantages; and it has two lifting components, which can work with one group of modular lifting permanent magnets or with multiple groups of parallel and spaced modular lifting permanent magnets, thereby making it more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a specific implementation of the lifting device provided in the embodiment of the utility model;

[0025] Figure 2 for Figure 1 A perspective view of the lifting device in the embodiment using a disk assembly;

[0026] Figure 3 for Figure 2 A perspective view of the disk assembly in the middle;

[0027] Figure 4 for Figure 3 Schematic diagram of turning on the permanent magnetic field inside the disk assembly;

[0028] Figure 5 for Figure 3 Schematic diagram of closing the permanent magnetic field inside the disk assembly;

[0029] Figure 6 for Figure 3 Schematic diagram of suction curve of magnetic disk assembly;

[0030] Figure 7 A schematic diagram of the internal structure of a disk assembly with a single set of permanent magnet shaft structures;

[0031] Figure 8 for Figure 7 Schematic diagram of the internal closed permanent magnetic field of the disk assembly;

[0032] Fig. 9 A schematic diagram of the suction force curve of a magnetic disk assembly with a single set of permanent magnet shaft structures;

[0033] Fig.10 It is a stereoscopic diagram of another specific implementation manner of the lifting device provided in the embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Disk assembly; 2. Connector; 3. Crank arm; 4. Connecting rod; 5. Mounting plate; 6. First connecting ear; 7. Indicator light; 8. Gear box; 9. Drive shaft; 10. Angle sensor; 11. Motor; 12. Battery; 13. Drive gear; 14. Fan gear; 15. Mating surface; 16. Limiting convex strip; 17. Limiting groove; 18. Permanent magnet shaft; 19. Fixed magnetic block; 20. Connecting seat; 21. Hanging beam; 22. Hanging beam support; 23. Second connecting ear; 24. Steel. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figure 1As shown, a specific implementation of the lifting device provided in this embodiment includes: a modular lifting permanent magnet and a lifting assembly. The modular lifting permanent magnet includes: a disk assembly 1 and a driving assembly, the disk assembly 1 has a plurality of disk assemblies 1 that are detachably connected in sequence through a connecting piece 2, and a crank arm 3 for opening or closing a permanent magnetic field is provided on the same side of the plurality of disk assemblies 1, and the crank arms 3 on the same side of two adjacent disk assemblies 1 are synchronously connected through a connecting rod 4. Specifically, the crank arms 3 of two adjacent disk assemblies 1 are rotatably connected through an independent connecting rod 4, that is, the two ends of the connecting rod 4 are rotatably connected to the two crank arms 3, so that the plurality of disk assemblies 1 are connected through the plurality of connecting rods 4. Through this setting, the plurality of disk assemblies 1 are combined into a whole. Compared with the connection through a whole connecting rod 4, the setting of the plurality of connecting rods 4 in this embodiment is more convenient for processing and assembly, and is conducive to improving the synchronization of the rotation of the crank arms 3 between the plurality of disk assemblies 1.

[0040] like Figure 1 As shown, in this embodiment, the driving assembly is connected to the disk assembly 1, and the driving assembly has a driving shaft 9, and the driving shaft 9 is connected to the crank arm 3 of the disk assembly 1 through a transmission assembly.

[0041] In the lifting device provided in this embodiment, the modular lifting permanent magnet has multiple modular disk assemblies 1, and a suitable number of disk assemblies 1 can be selected and assembled according to the specifications of the object, so that the scope of application is wider; and because the multiple disk assemblies 1 are detachable, the difficulty of transportation can be reduced. Specifically, when the specifications of the object are larger, a larger number of disk assemblies 1 can be assembled into a larger modular lifting permanent magnet; when the specifications of the object are smaller, a smaller number of disk assemblies 1 can be assembled into a smaller modular lifting permanent magnet.

[0042] like Figure 1 As shown, in the lifting device provided by this embodiment, the magnetic disk assembly 1 of the modular lifting permanent magnet is fixedly connected to the lifting assembly, and the lifting assembly is used to connect with the sling. The lifting assembly includes: a mounting plate 5, the mounting plate 5 is vertically connected to the side of the magnetic disk assembly 1 through a fastener, and the top of the mounting plate 5 has a first connecting ear 6 for connecting a tension sensor and a lifting ring; when in use, the lifting ring is used to connect the sling, and the tension applied to the lifting ring is detected by the tension sensor. Through this arrangement, the lifting of objects can be achieved.

[0043] like Figure 1As shown, in this embodiment, an indicator light 7 is also connected to the outer surface of the mounting plate 5, and the indicator light 7 is used to display the position status of the disk assembly 1, so as to facilitate remote control; specifically, when the disk assembly 1 is off the ground, the indicator light 7 can be turned on, and when the disk assembly 1 is placed, the indicator light 7 can be turned off, so as to facilitate judgment of whether the disk assembly 1 is in contact with the object to be lifted. Of course, the above description is not restrictive, and in some alternative embodiments, the indicator light 7 can be omitted.

[0044] like Figure 1 As shown, in the lifting device provided by this embodiment, the connecting member 2 for connecting two adjacent disk assemblies 1 may be a connecting block. The connecting block is connected above the two adjacent disk assemblies 1, and the connecting block has a passage suitable for passing a fastener, and the fastener is connected to the disk assembly 1 below after passing through the connecting block. Specifically, the connecting block is suitable for passing four fasteners, two of the four fasteners are connected to one disk assembly 1, and the other two are connected to another disk assembly 1, so that the connection between the two adjacent disk assemblies 1 is achieved through this structure. Of course, the above description is not restrictive, and in some alternative embodiments, other connecting members 2 may also be used to connect the two adjacent disk assemblies 1, for example, a structure that is mutually snap-fitted, etc.

[0045] like Figure 2 As shown, in the modular lifting permanent magnet provided in this embodiment, the driving assembly includes: a gear box 8, the driving shaft 9 is arranged in the gear box 8, and the gear box 8 is connected to an angle sensor 10, and the angle sensor 10 is used to detect the rotation angle of the driving shaft 9. Through the setting of the above-mentioned angle sensor 10, the rotation angle of the driving shaft 9 can be fed back in real time, so as to realize the precise control of the magnetic force of the disk assembly 1 and accurately adjust the suction value. Of course, the above description is not restrictive. In some alternative embodiments, the angle sensor 10 can be omitted, for example, it can be replaced by a position detection micro switch.

[0046] like Figure 2As shown, in the modular lifting permanent magnet provided in this embodiment, the driving component also includes: an electric motor 11 and a battery 12, wherein the electric motor 11 and the battery 12 are respectively connected to the gear box 8, and the electric motor 11 is connected to the driving shaft 9 in the gear box 8 to drive the driving shaft 9 to rotate; the battery 12 is electrically connected to the electric motor 11 to provide electrical energy to the electric motor 11. Among them, the electric motor 11 can be a servo motor, a stepper motor or an ordinary AC motor. Of course, the above description is not restrictive. In some alternative embodiments, the battery 12 can be omitted, and only an external power supply can be used. The electric motor 11 can also be replaced by other driving devices, such as a cylinder, an oil cylinder, etc. When a linear driving device of a cylinder or an oil cylinder is used, the linear drive can be converted into a rotational drive by other conventional transmission components.

[0047] like Figure 2 As shown, in the modular lifting permanent magnet provided in this embodiment, the transmission assembly includes: a driving gear 13, the driving gear 13 is connected to the driving shaft 9, and the crank arm 3 on the disk assembly 1 has an external tooth structure for meshing and transmitting with the driving gear 13. Through this setting, the driving shaft 9 can synchronously drive the crank arm 3 to rotate, so as to better control the angle of the crank arm 3. Of course, the above description is not restrictive. In some alternative embodiments, the driving shaft 9 can also use other transmission assemblies to drive the crank arm 3, such as a synchronous belt.

[0048] like Figure 2 As shown, in the modular lifting permanent magnet provided in this embodiment, the crank arm 3 with an external tooth structure is a sector gear 14. Specifically, the diameter of the sector gear 14 is greater than the diameter of the driving gear 13. Through this arrangement, the rotation speed when driving the crank arm 3 can be reduced, while the rotation accuracy of the crank arm 3 can be improved. Thus, the angle of the crank arm 3 can be controlled more accurately. Of course, the above description is not restrictive. In some alternative embodiments, the crank arm 3 can also adopt other structures with an external tooth structure, for example, a complete gear structure.

[0049] like Figure 2 , Figure 3As shown, in the modular lifting permanent magnet provided in this embodiment, the disk assembly 1 has two groups of permanent magnet shafts 18 arranged in parallel and symmetrically, and the two protruding ends of the two groups of permanent magnet shafts 18 are respectively connected to crank arms 3, and the drive shaft 9 has two symmetrically arranged ones in the gear box 8, and each drive shaft 9 is used to drive one crank arm 3. That is to say, in this embodiment, there are two groups of permanent magnet shafts 18 in the disk assembly 1, and each group of permanent magnet shafts 18 is driven by one crank arm 3. With such a configuration, the two groups of permanent magnet shafts 18 can be driven synchronously. Of course, the above description is not restrictive. In some alternative embodiments, a single group of permanent magnet shafts 18 can also be set in the disk assembly 1. In this way, each disk assembly 1 can be controlled by one crank arm 3.

[0050] like Figure 3 As shown, in this embodiment, the crank arm 3 is fixedly connected to the permanent magnet shaft 18 of the disk assembly 1 by a fastener. Specifically, the crank arm 3 can be sleeved on the protruding end of the permanent magnet shaft 18 and then locked by a fastener. In this way, the rotation of the crank arm 3 can drive the permanent magnet shaft 18 to rotate inside the disk assembly 1, thereby adjusting the permanent magnetic field inside the disk assembly 1. Of course, the above description is not restrictive. In some alternative embodiments, the crank arm 3 can also be fixedly connected to the permanent magnet shaft 18 in other ways, such as by welding.

[0051] like Figure 3 As shown, in the modular lifting permanent magnet provided in this embodiment, a plurality of disk assemblies 1 have mutually fitting mating surfaces 15, and a concave-convex matching limiting structure is provided on the mating surface 15. The setting of the limiting structure can be used to better assemble the plurality of disk assemblies 1 on the one hand, and improve the stability between the assembled plurality of disk assemblies 1 on the other hand. Of course, the above description is not restrictive, and in some alternative embodiments, the limiting structure can be omitted.

[0052] like Figure 3As shown, in the modular lifting permanent magnet provided in this embodiment, the limiting structure includes: a limiting ridge 16 extending along the height direction of the disk assembly 1 and a limiting groove 17 cooperating with the limiting ridge 16, and the limiting ridge 16 and / or the limiting groove 17 have at least two symmetrically arranged on one of the mating surfaces 15. Specifically, in this embodiment, two limiting ridges 16 arranged in parallel and spaced apart are arranged on the same surface of the disk assembly 1, and the two limiting ridges 16 are respectively located at the two ends of the surface. At the same time, two limiting grooves 17 arranged in parallel and spaced apart are arranged on the other surface of the disk assembly 1, and the two limiting grooves 17 are respectively located at the two ends of the surface. During assembly, the limiting ridge 16 of one disk assembly 1 is embedded in the limiting groove 17 of another disk assembly 1, thereby realizing the limiting of the two disk assemblies 1. At the same time, the limiting convex strip 16 and the limiting groove 17 of this embodiment are both vertically arranged, and cooperate with the connecting piece 2 above the disk assembly 1 to connect the two adjacent groups of disks together; when the surface of the object to be lifted is not flat, the height difference between the bottom surfaces of the two adjacent groups of disk assemblies 1 can be adjusted by installing a gasket at the connecting piece 2, so that the bottom surface of the disk assembly 1 and the upper surface of the object to be lifted are more closely fitted, thereby better magnetically attracting the object to be lifted. Of course, the above description is not restrictive. In some alternative embodiments, the limiting structure can also adopt other conventional structures, such as the cooperation of positioning columns and positioning holes.

[0053] like Figure 4 , Figure 5 As shown, when the disk assembly 1 has two sets of permanent magnet shafts 18, that is, the disk assembly 1 has two permanent magnet shafts 18 arranged in parallel. When working, the two permanent magnet shafts 18 are synchronously driven to rotate, thereby changing the permanent magnetic field inside the disk assembly 1. Specifically, Figure 4 is the state of turning on the permanent magnetic field, such as Figure 5 The permanent magnetic field is closed. When unloading, the two permanent magnetic shafts 18 are driven to Figure 4 state, rotate to Figure 5 state, the permanent magnetic field inside the disk assembly 1 can be closed to perform unloading.

[0054] like Figure 6 As shown in FIG. 1 , it is a schematic diagram of the magnetic force curve using a double set of permanent magnet shafts 18, wherein the angle 0° is the unloading state. At this time, Figure 5 As shown, the N pole of the magnetic circuit of the fixed magnetic block 19 is opposite to the N pole of the magnetic circuit of the permanent magnetic shaft 18 at the upper and lower sides, and the entire magnetic circuit is closed inside the magnetic box. The residual magnetism at the bottom is small, and the steel 24 cannot be sucked up.

[0055] like Figure 6As shown in the figure, the angle of about 45° is the critical point of magnetic circuit closing and opening. After crossing this point, the suction force increases significantly. The angle of 90° is the material suction state. At this time, if Figure 4 As shown, the permanent magnet shafts 18 on both sides rotate 90° relative to each other, the inner wall magnetic pole of the magnetic box is converted to the N pole, and the outer wall magnetic pole is converted to the S pole, forming a closed loop magnetic circuit from the N pole to the S pole with the steel 24, and the steel 24 is attracted.

[0056] like Figure 7 , Figure 8 As shown, when a single set of permanent magnet shafts 18 is used inside the disk assembly 1, that is, there is only one permanent magnet shaft 18 inside the disk assembly 1. During operation, the permanent magnet shaft 18 is driven to rotate, thereby changing the permanent magnetic field inside the disk assembly 1. Specifically, Figure 7 is the state of turning on the permanent magnetic field, such as Figure 8 The permanent magnetic field is closed. When unloading, the two permanent magnetic shafts 18 are driven to Figure 7 state, rotate to Figure 8 state, the permanent magnetic field inside the disk assembly 1 can be closed to perform unloading.

[0057] like Fig. 9 As shown in FIG. 1 , it is a schematic diagram of the magnetic force curve using a single set of permanent magnet shafts 18, wherein the angle 0° is the unloading state. At this time, Figure 8 As shown, the N pole of the magnetic circuit of the fixed magnetic block 19 is opposite to the N pole of the magnetic circuit of the permanent magnetic shaft 18 on the left and right, and the entire magnetic circuit is closed inside the magnetic box. There is less residual magnetism at the bottom, and the steel 24 cannot be sucked up.

[0058] like Fig. 9 As shown in the figure, when the angle is about 90°, it is the critical point of magnetic circuit closing and opening. After crossing it, the suction force increases greatly. The angle of 180° is the material suction state. At this time, if Figure 7 As shown, the permanent magnet shaft 18 rotates 180°, the left magnetic pole of the magnetic box is converted to the N pole, and the right magnetic pole is converted to the S pole, forming a closed magnetic circuit from the N pole to the S pole with the steel 24, and the steel 24 is sucked up.

[0059] like Fig.10 As shown, this embodiment also provides another specific implementation of a lifting device, in which the lifting assembly includes: a connection seat 20, the connection seat 20 is connected to the top surface of the disk assembly 1, and after a plurality of the disk assemblies 1 are assembled, two connection seats 20 are symmetrically connected on both sides of the disk assembly 1 for connecting with the drive assembly; specifically, the connection seat 20 can be connected to the disk assembly 1 through a fastener. Of course, the above description is not restrictive, and in some alternative implementations, the connection seat 20 can also be connected to the disk in other ways, such as through a snap connection, etc.

[0060] like Fig.10As shown, in this embodiment, the modular lifting permanent magnet has at least two groups arranged in parallel and spaced apart, and the connecting seats 20 on the two groups of modular lifting permanent magnets are connected by a suspension beam 21, and the suspension beam 21 has two symmetrically arranged ones, and a plurality of suspension beam supports 22 are connected between the two suspension beams 21, and the suspension beam 21 has a second connecting ear 23 for connecting a tension sensor and a lifting ring. Through this arrangement, it is possible to achieve rapid assembly and disassembly on the working site, and meet the requirements of lifting, steel 24 specifications and other modified uses under different working conditions. The above description is not restrictive, and in some alternative embodiments, the modular lifting permanent magnet may also have only one group, or more groups, etc.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A modular lifting permanent magnet, characterized in that: include: A disk assembly (1), the disk assembly (1) comprising a plurality of disk assemblies that are sequentially detachably connected via a connecting piece (2), a crank arm (3) for opening or closing a permanent magnetic field being provided on the same side of the plurality of disk assemblies (1), and the crank arms (3) on the same side of two adjacent disk assemblies (1) being connected via a connecting rod (4); A drive assembly is connected to the disk assembly (1), wherein the drive assembly has a drive shaft (9), and the drive shaft (9) is connected to a crank arm (3) of the disk assembly (1) via a transmission assembly.

2. The modular lifting permanent magnet according to claim 1, characterized in that: The driving assembly comprises: a gear box (8), the driving shaft (9) being arranged in the gear box (8), the gear box (8) being connected to an angle sensor (10), and the angle sensor (10) being used to detect the rotation angle of the driving shaft (9).

3. The modular lifting permanent magnet according to claim 2, characterized in that: The disk assembly (1) has two sets of permanent magnet shafts (18) arranged in parallel and symmetrically, and the two protruding ends of the two sets of permanent magnet shafts (18) are respectively connected to crank arms (3). The gear box (8) has two drive shafts (9) arranged symmetrically, and each drive shaft (9) is used to drive one crank arm (3).

4. The modular lifting permanent magnet according to claim 1, characterized in that: The transmission assembly comprises: a driving gear (13), wherein the driving gear (13) is connected to the driving shaft (9), and the crank arm (3) on the disk assembly (1) has an external tooth structure for meshing with the driving gear (13) for transmission.

5. The modular lifting permanent magnet according to claim 4, characterized in that: The crank arm (3) with an external tooth structure is a sector gear (14) having a diameter greater than that of the driving gear (13).

6. The modular lifting permanent magnet according to any one of claims 1 to 5, characterized in that: A plurality of magnetic disk assemblies (1) are provided with mutually fitting matching surfaces (15), and the matching surfaces (15) are provided with concave and convex matching limiting structures.

7. The modular lifting permanent magnet according to claim 6, characterized in that: The limiting structure comprises: a limiting convex strip (16) extending along the height direction of the disk assembly (1) and a limiting groove (17) cooperating with the limiting convex strip (16), and at least two of the limiting convex strips (16) and / or the limiting grooves (17) are symmetrically arranged on one of the matching surfaces (15).

8. A lifting device, characterized in that: include: A lifting assembly and a modular lifting permanent magnet as described in any one of claims 1 to 7, wherein the magnetic disk assembly (1) of the modular lifting permanent magnet is fixedly connected to the lifting assembly, and the lifting assembly is used to be connected to a sling.

9. The lifting device according to claim 8, characterized in that: The lifting assembly comprises: a mounting plate (5), the mounting plate (5) being vertically connected to the side of the disk assembly (1), and the top end of the mounting plate (5) being provided with a first connecting ear (6) for connecting a tension sensor and a lifting ring.

10. The lifting device according to claim 8 or 9, characterized in that: The lifting assembly comprises: a connection seat (20), the connection seat (20) being connected to the top surface of the disk assembly (1), and after a plurality of the disk assemblies (1) are assembled, two connection seats (20) are symmetrically connected to both sides of the disk assembly (1) for connecting to the drive assembly; The modular lifting permanent magnets have at least two groups arranged in parallel and at intervals, the connecting seats (20) on the two groups of modular lifting permanent magnets are connected by a suspension beam (21), the suspension beam (21) has two symmetrically arranged ones, a plurality of suspension beam supports (22) are connected between the two suspension beams (21), and the suspension beam (21) has a second connecting ear (23) for connecting a tension sensor and a suspension ring.

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