Rotation driving device

Abstract

The invention provides a rotary driving device. The rotary driving device comprises a shell, a magnet assembly, a conductor and a movement assembly. The magnet assembly is located in the shell and connected with the shell, and a magnetic field is formed in the magnet assembly; the conductor comprises a first part and a second part which are connected, the first part is located in the magnetic field and movably connected with the shell, the two ends of the first part are electrically connected with the positive electrode and the negative electrode of a power source respectively, and the current direction in the conductor is perpendicular to the magnetic field direction of the magnetic field. The second part is located outside the shell and used for being connected with a blade. The moving assembly is located in the shell and comprises a connecting part and a driving part, and the connecting part is partially located in the magnetic field and connected with the conductor. The driving efficiency of the rotary driving device can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric rotary drive, and in particular relates to a rotary drive device. Background Art

[0002] In the mechanical field, a rotary drive device is often required to drive a driven object (such as a blade, a drive shaft, etc.) to rotate so that the driven object can rotate to enable the device where the driven object is located to work normally. For example, the blades rotate to generate thrust to drive a ship to sail.

[0003] In the related art, when the blades rotate to generate thrust to drive the ship to sail, the blades are generally driven to rotate by a rotary drive device. The rotary drive device includes a hydraulic motor, a sprocket assembly, and blades. The sprocket assembly is connected to the hydraulic motor and the blades respectively. The hydraulic motor rotates under the drive of the oil. The rotating hydraulic motor drives the blades to rotate through the sprocket assembly. The blades rotate and generate thrust to drive the ship to travel.

[0004] However, during testing or sailing, the rotary drive device often needs to work 24 hours a day. At this time, the hydraulic motor is very likely to be overloaded. When the hydraulic motor is overloaded, the internal temperature is too high, causing the speed of the hydraulic motor to drop or even to zero, which reduces the energy conversion efficiency of the hydraulic motor, causing energy loss, thereby reducing the working efficiency of the rotary drive device. Moreover, when the hydraulic motor is in a long-term working state, it will generate huge noise, which will damage the hearing of on-site construction workers in the long run. Summary of the invention

[0005] The embodiment of the present disclosure provides a rotary drive device, which can avoid the problem of energy loss caused by overload of the hydraulic motor, thereby improving the working efficiency of the rotary drive device. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides a rotation drive device, which includes a shell, a magnet assembly, a conductor and a motion assembly; the magnet assembly is located in the shell and connected to the shell, and a magnetic field is formed inside the magnet assembly; the conductor includes a first part and a second part that are connected, the first part is located in the magnetic field and movably connected to the shell, the two ends of the first part are electrically connected to the positive and negative poles of a power source respectively, the current direction in the conductor is perpendicular to the magnetic field direction of the magnetic field, the second part is located outside the shell and is used to be connected to a driven object; the motion assembly is located in the shell and includes a connecting component and a driving component, the connecting component is partially located in the magnetic field, and the connecting component is connected to the conductor, and the driving component is used to drive the connecting component to move relative to the conductor along the current direction in the conductor so as to rotate synchronously with the conductor.

[0007] In another implementation of the present disclosure, the first part of the conductor has a channel inside, and the extension direction of the channel is the same as the direction of the current in the conductor; the connecting component includes a cable, the cable portion is located in the channel, the cable can move in the channel, and the outer wall of the cable located in the channel is in contact with the inner wall of the channel.

[0008] In yet another implementation of the present disclosure, the driving component includes a pulley block and a driving structure; the cable is slidably wound in the pulley block, and the driving structure is connected to the pulley block for driving the pulley block to rotate.

[0009] In another implementation of the present disclosure, the pulley block includes at least two driving wheels, the at least two driving wheels are arranged in a row along a direction perpendicular to the direction of the magnetic field, and the cables are sequentially wound around the outside of the driving wheels along the arrangement direction of the at least two driving wheels.

[0010] In another implementation of the present disclosure, the motion component also includes a connecting piece and a wire bracket, the connecting piece is respectively connected to the top of the wire bracket, the at least two driving wheels are both located in the wire bracket and are respectively rotatably connected to the wire bracket, the wire bracket has wire holes on opposite sides respectively, and the cable is located in the two wire holes.

[0011] In another implementation of the present disclosure, the first part of the conductor includes two joints and an intermediate connecting rod; the two joints are respectively located at two ends of the intermediate connecting rod and are respectively connected to the two ends of the intermediate connecting rod, and the two joints are respectively electrically connected to the positive pole and the negative pole of the power supply; the channel is located in the intermediate connecting rod.

[0012] In yet another implementation of the present disclosure, the connector is a U-shaped head having a U-shaped cavity therein for accommodating an electrical conductor.

[0013] In another implementation of the present disclosure, the conductor also includes two elastic clips, which are respectively located in the outer walls of the intermediate connecting rod close to both ends thereof and are both located in the channel; each of the two elastic clips includes two spring sheets, and the two spring sheets in each of the elastic clips are arranged relative to each other and form a V-shaped opening, and the opening size of the V-shaped opening gradually decreases along the moving direction of the cable.

[0014] In another implementation of the present disclosure, the magnet assembly includes a first permanent magnet, a second permanent magnet and a protective shell; the first permanent magnet and the second permanent magnet are both embedded in the protective shell and are both connected to the protective shell, and the N pole of the first permanent magnet and the S pole of the second permanent magnet are arranged relatively spaced apart; the protective shell is connected to the outer shell.

[0015] In yet another implementation of the present disclosure, the protective shell includes a hemispherical first shell and a hemispherical second shell, the first shell and the second shell are arranged opposite to each other and spaced apart, and the conductor is movably located between the first shell and the second shell.

[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:

[0017] Since a magnetic field is formed inside the magnet assembly and the first part of the conductor is located in the magnetic field, the two ends of the first part of the conductor are respectively connected to the positive pole of the power source and the conductor, so that the conductor can be provided with power by the power source to allow current to flow into the conductor. Since the direction of the current in the conductor is perpendicular to the magnetic field direction of the magnetic field, the conductor can be subjected to an Ampere force perpendicular to both the direction of the current in the conductor and the magnetic field direction of the magnetic field, so as to drive the conductor to move.

[0018] Since the rotary drive device also includes a motion component, the motion component includes a connecting component and a driving component, and the connecting component is connected to the conductor, and the driving component is used to drive the connecting component to move relative to the conductor along the direction of the current in the conductor, so as to rotate synchronously with the conductor. In this way, when the conductor is subjected to the Ampere force, since the connecting component is connected to the conductor, the Ampere force of the conductor will also drive the connecting component to move together. Since the connecting component can move relative to the conductor along the direction of the current in the conductor under the drive of the driving component, when the connecting component moves relative to the conductor, the Ampere force of the conductor will also drive the connecting component to move together, so that the connecting component will move under the combined action of the Ampere force and the driving component. Since the Ampere force is perpendicular to the moving direction of the connecting component relative to the conductor, the Ampere force will become a centripetal force, prompting the connecting component to rotate, thereby driving the conductor to rotate. When the conductor rotates, it can drive the blade to rotate.

[0019] It can be seen that in the above rotary drive device, when the conductor is energized, the conductor and the connecting component can be rotated together only by the driving component driving the connecting component to move relative to the conductor, and finally the blades are driven to rotate by the rotation of the conductor, thus avoiding the use of a hydraulic motor to drive the blades to rotate and damaging energy consumption, and greatly improving the driving efficiency. At the same time, the use of an electromagnetic device can also reduce noise and avoid noise causing harm to workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a structural schematic diagram of a rotation drive device provided by an embodiment of the present disclosure;

[0022] Figure 2 yes Figure 1 Force analysis diagram of the conductor and connecting parts;

[0023] Figure 3 yes Figure 1 A top view of the conductor's motion trajectory;

[0024] Figure 4 yes Figure 2 Force analysis diagram of the cable;

[0025] Figure 5 yes Figure 1 Schematic diagram of the structure of the motion component;

[0026] Figure 6 yes Figure 1 Schematic diagram of the structure of the conductor;

[0027] Figure 7 yes Figure 1 Schematic diagram of the structure of the magnetic component.

[0028] The symbols in the figure mean the following:

[0029] 1. Shell; 11. Half shell;

[0030] 2. magnet assembly; 21. first permanent magnet; 22. second permanent magnet; 23. protective shell; 231. first shell; 232. second shell;

[0031] 3. Conductor; 300. Channel; 31. Joint; 32. Intermediate connecting rod; 33. Elastic clip; 331. Shrapnel; 35. Connecting shaft;

[0032] 4. Motion component; 41. Connecting component; 411. Cable; 42. Driving component; 421. Pulley block; 4211. Driving wheel; 422. Driving structure; 43. Connecting piece; 44. Wire bracket; 440. Wire hole;

[0033] 100. Leaves. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0035] The present disclosure provides a rotary drive device, such as Figure 1 As shown, the rotary drive device includes a housing 1 , a magnet assembly 2 , a conductor 3 and a motion assembly 4 .

[0036] The magnet assembly 2 is located inside the housing 1 and connected to the housing 1, and a magnetic field is formed inside the magnet assembly 2. The conductor 3 includes a first part and a second part that are connected, the first part is located in the magnetic field and is movably connected to the housing 1, the two ends of the first part are respectively connected to the positive pole and the negative pole of the power supply, the current direction in the conductor 3 is perpendicular to the magnetic field direction of the magnetic field, and the second part (not shown in the figure) is located outside the housing 1 and is used to connect to the blade.

[0037] The moving assembly 4 is located in the housing 1 and includes a connecting component 41 and a driving component 42. The connecting component 41 is partially located in the magnetic field and is slidably connected to the conductor 3. The driving component 42 is used to drive the connecting component 41 to move relative to the conductor 3 along the current direction in the conductor 3 so as to rotate synchronously with the conductor 3.

[0038] When the rotary drive device provided in the embodiment of the present disclosure is used to drive the blades, since the rotary drive device includes a housing 1, etc., the housing 1 can provide an installation basis for the magnet assembly 2, the conductor 3, the moving assembly 4, etc., while also protecting the magnet assembly 2, the conductor 3, the moving assembly 4, etc., to extend the service life of the rotary drive device.

[0039] Furthermore, since a magnetic field is formed inside the magnet assembly 2 and the first part of the conductor 3 is located in the magnetic field, the two ends of the first part of the conductor 3 are electrically connected to the positive pole and the negative pole of the power source, respectively, so that the power source can provide power to the conductor 3 so that current flows into the conductor 3. Since the direction of the current in the conductor 3 is perpendicular to the magnetic field direction of the magnetic field in which it is located, the conductor 3 can be subjected to an Ampere force perpendicular to both the direction of the current in the conductor 3 and the magnetic field direction of the magnetic field in which it is located, so as to drive the conductor 3 to move.

[0040] Since the rotary drive device further includes a motion component 4, the motion component 4 includes a connecting component 41 and a driving component 42, and the connecting component 41 is connected to the conductor 3, and the driving component 42 is used to drive the connecting component 41 to move relative to the conductor 3 along the direction of the current in the conductor 3, so as to rotate synchronously with the conductor 3. In this way, when the conductor 3 is subjected to the Ampere force, since the connecting component 41 is connected to the conductor 3, the Ampere force of the conductor 3 will also drive the connecting component 41 to move together. Since the connecting component 41 can move relative to the conductor 3 along the direction of the current in the conductor 3 under the drive of the driving component 42, when the connecting component 41 moves relative to the conductor 3, the Ampere force of the conductor 3 will also drive the connecting component 41 to move together, so that the connecting component 41 will move under the combined action of the Ampere force and the driving component 42. Since the Ampere force is perpendicular to the moving direction of the connecting component 41 relative to the conductor 3, the Ampere force will become a centripetal force, driving the connecting component 41 to rotate, thereby driving the conductor 3 to rotate. When the conductor 3 rotates, the blades can be driven to rotate.

[0041] It can be seen that in the above rotary drive device, when the conductor 3 is energized, the conductor 3 and the connecting component 41 can be rotated together only by driving the connecting component 41 relative to the conductor 3 through the driving component 42, and finally the blades are driven to rotate by the rotation of the conductor 3, thus avoiding the use of a hydraulic motor to drive the blades and damaging energy consumption, and greatly improving the driving efficiency. At the same time, the use of an electromagnetic device can also reduce noise and avoid noise causing harm to workers.

[0042] For example, combined Figure 1 The magnetic field direction of the conductor 3 is vertically downward, and the current direction in the conductor 3 is horizontally to the right. In this way, the conductor 3 will be subjected to the Ampere force perpendicular to the paper surface and inward.

[0043] Figure 2 yes Figure 1 The force analysis diagram of the conductor and the connecting parts, combined with Figure 2 Since the connecting member 41 is connected to the conductor 3, the connecting member 41 is also subjected to an Ampere force F perpendicular to the paper surface and inward. 安 ( Figure 2 In addition, the connecting component 41 can move relative to the conductor 3 along the direction of the current in the conductor 3 ( Figure 2 That is, the Ampere force on the connecting component 41 is proportional to the moving speed of the connecting component 41 ( Figure 2 The connecting member 41 rotates inwards in a circular motion under the action of the Ampere force, thereby pulling the conductor 3 to move the conductor 3. Figure 2 The axis a in the magnet rotates, and the axial direction of the axis a is the same as the direction of the magnetic field B.

[0044] Figure 3 yes Figure 1 Top view of the conductor trajectory, see Figure 3 For example, the axis a may be located at the center of the magnetic field. That is, the conductor 3 rotates at the center of the magnetic field, so that the conductor 3 is subjected to the same magnetic field strength during the rotation, thereby ensuring that the trajectory of the conductor 3 is a full circle.

[0045] In other examples, the direction of the magnetic field may be other directions, such as vertically upward, etc. Correspondingly, the direction of the current in the conductor 3 may also be other directions.

[0046] Combination Figure 2 Optionally, the first portion of the conductor 3 has a channel 300 inside, and the extending direction of the channel 300 is the same as the direction of the current in the conductor 3.

[0047] The connecting component 41 includes a cable 411 . The cable 411 is partially located in the channel 300 and connected to the conductor 3 . The cable 411 can move in the channel 300 . The outer wall of the cable 411 in the channel 300 fits with the inner wall of the channel 300 .

[0048] In the above implementation, the channel 300 is used to provide an installation space for the cable 411, and enables the cable 411 to move relative to the conductor 3. In addition, since the outer wall of the cable 411 located in the channel 300 fits with the inner wall of the channel 300, when the conductor 3 is subjected to the Ampere force, the cable 411 will also be subjected to the Ampere force. In this way, when the cable 411 moves linearly relative to the conductor 3, the cable 411 will gradually move inward from linear motion to circular motion under the action of the Ampere force. When the cable 411 rotates, the cable 411 will rotate with the conductor 3.

[0049] Figure 4 yes Figure 2 The force analysis diagram of the cable, combined with Figure 4 , the center of the cable 411 in the channel 300 is taken as the center of mass for force analysis. The driving force when the driving component 42 drives the cable 411 to move relative to the conductor 3 is F 驱 The cable 411 is located in the channel 300 and is supported by the conductor 3 with a force F N The weight of the cable 411 is G. The friction force on the cable when it moves in the channel 300 is F f . Ampere force F during cable movement 安 .

[0050] Combination Figure 4 , the cable is subjected to balanced forces in the vertical direction, namely, gravity G and support force F N The cable 411 needs to move to the right at a constant speed. The cable is in the horizontal direction, and the driving force F 驱 and friction force F fThe magnitudes are the same but the directions are opposite. Therefore, the cable 411 is only subjected to an Ampere force F along the Z-axis. 安 In this way, the cable 411 moves at a constant speed along the X-axis direction, while the Ampere force F 安 Under the action of , it can make circular motion in the XOZ plane. Correspondingly, the conductor 3 located in the magnetic field will rotate in the magnetic field at the center of the magnetic field.

[0051] Figure 5 yes Figure 1 Schematic diagram of the structure of the motion component, combined with Figure 5 Optionally, the driving component 42 includes a pulley block 421 and a driving structure 422. The cable 411 is slidably wound in the pulley block 421. The driving structure 422 is connected to the pulley block 421 and is used to drive the pulley block 421 to rotate.

[0052] In the above implementation, the pulley block 421 is used to drive the cable 411 to move, so that the cable 411 can move in the channel 300. The driving structure 422 is used to drive the pulley block 421 to rotate, so that the pulley block 421 can rotate.

[0053] That is to say, after the cable 411 is wound around the pulley block 421, the pulley block 421 rotates under the drive of the driving structure 422, and the cable 411 wound around the pulley block 421 moves synchronously with the pulley block 421 under the action of static friction, so that the cable 411 can move continuously relative to the conductor 3.

[0054] Optionally, the pulley block 421 includes at least two driving wheels 4211, and the at least two driving wheels 4211 are arranged in a row along a direction perpendicular to the magnetic field direction. The cable 411 is sequentially wound around the driving wheels 4211 along the arrangement direction of the at least two driving wheels 4211, and is relatively stationary with the driving wheels 4211.

[0055] In the above implementation, the arrangement of at least two driving wheels 4211 enables the cable, when being wound in the pulley block 421, to have the direction of entering the pulley block 421 and the direction of leaving the pulley block 421 to be exactly the same, so that the cable 411 can form a closed loop after being connected to the conductor 3, so that the cable 411 can move continuously under the drive of the driving wheel 4211, while improving the convenience of arranging the cable 411 in the conductor 3.

[0056] Optionally, the motion assembly 4 further includes a connector 43 and a wire support 44. The connectors 43 are respectively connected to the top of the wire support 44, at least two driving wheels 4211 are both located in the wire support 44 and are respectively rotatably connected to the wire support 44, and the wire support 44 has wire holes 440 on opposite sides, and the cables 411 are located in the two wire holes 440.

[0057] In the above implementation, the connector 43 is used to connect the wire holder 44 to the housing 1 , so that the wire holder 44 can be connected in the housing 1 , so as to facilitate the connection between the cable 411 and the conductor 3 .

[0058] The wire support 44 is used to place the driving wheels 4211, so that the driving wheels 4211 can be arranged in a row and placed in the housing 1 to guide and drive the cables 411. The wire holes 440 are provided in the wire support 44, so that the cables 411 can be smoothly inserted into the wire support 44, ensuring that the cables 411 will not be tangled.

[0059] Exemplarily, the connecting member 43 may be any one of a connecting rope, a rod, and the like.

[0060] In the disclosed embodiment, since the conductor 3 needs to rotate, in order to prevent the cable 411 from getting tangled when the conductor 3 rotates, the connector 43 and the wire support 44 can be controlled to rotate synchronously with the conductor 3, so that it can be ensured that the cable 411 in the conductor 3 always moves relative to the conductor 3 along the direction of the current in the conductor 3. For example, the connector 43 can be connected to one end of a rotating arm, and the other end of the rotating arm is connected to the driving motor. The other end of the rotating arm is concentric with the rotation center of the conductor 3. The length direction of the rotating arm is perpendicular to the direction of the magnetic field. When the driving motor is started, the driving motor drives the rotating arm to rotate, and the rotating arm drives the connector 43 to rotate synchronously with the conductor 3.

[0061] Figure 6 yes Figure 1 Schematic diagram of the structure of the conductor, combined with Figure 6 Optionally, the first part of the conductor 3 includes two joints 31 and an intermediate connecting rod 32. The two joints 31 are respectively located at the two ends of the intermediate connecting rod 32 and are respectively connected to the two ends of the intermediate connecting rod 32. The two joints 31 are respectively electrically connected to the positive electrode and the negative electrode of the power supply. The channel 300 is located in the intermediate connecting rod 32.

[0062] In the above implementation, the connector 31 facilitates the electrical connection between the conductor 3 and the power supply, so that when the power supply is supplied, a current will be generated inside the conductor 3, and the direction of the current in the conductor 3 is from one of the two connectors 31 to the other connector 31. The middle connecting rod 32 is provided with a channel 300 inside, which can accommodate the cable 411, so that the cable 411 can be inserted into the middle connecting rod 32, and then move linearly relative to the conductor 3.

[0063] For example, Figure 2As shown, since the cable 411 can move relative to the conductor 3, and after the current is passed through the conductor 3, the conductor 3 will be moved by the Ampere force under the action of the magnetic field. Since the cable 411 is in contact with the inner wall of the conductor 3, the cable 411 will also be affected by the Ampere force. The cable 411 in the conductor 3 has a movement speed relative to the conductor 3 in the same direction as the current, that is, the direction of the Ampere force of the cable 411 is perpendicular to the direction of the movement speed of the cable 411, so the Ampere force received by the cable 411 becomes a centripetal force, and the cable 411 will rotate. After the cable 411 rotates, it will drive the conductor 3 to rotate, so that the rotation drive device outputs power.

[0064] See again Figure 6 Optionally, the connector 31 is a U-shaped head having a U-shaped cavity for accommodating the wire.

[0065] In the above implementation, the connector 31 is configured as a U-shaped head, so that the electric wire can be clamped through the U-shaped cavity in the U-shaped head, so that the electric wire can be firmly connected to the connector 31, thereby allowing current to flow into the conductor 3.

[0066] Optionally, the conductor 3 further includes two elastic clips 33, which are respectively located in the outer walls of the middle connecting rod 32 near both ends and are both located in the channel 300. Each of the two elastic clips 33 includes two spring pieces 331, and the two spring pieces 331 in each elastic clip 33 are arranged opposite to each other and form a V-shaped opening, and the opening size of the V-shaped opening gradually decreases along the moving direction of the cable 411.

[0067] In the above implementation, the elastic clip 33 can be provided to clamp and fix the cable 411 so that the cable 411 will not move around at will.

[0068] Moreover, the elastic clip 33 is set in the form of two spring sheets 331, and a V-shaped opening can be formed by the two spring sheets 331, so that the cable 411 can only move from the larger opening end to the smaller opening end of the V-shaped opening, and will not move in the opposite direction, so that the cable 411 will not move around at will.

[0069] In the disclosed embodiment, since the conductor 3 is rotating, in order to prevent the existence of the power supply from interfering with the rotation of the conductor 3, the power supply can be controlled to rotate synchronously with the conductor 3, or the power supply can be directly integrated into the conductor 3.

[0070] Exemplarily, the channel 300 is a long strip-shaped hole. The inner diameter of the channel 300 is slightly larger than the outer diameter of the cable 411 located in the channel 300. The channel 300 and the cable 411 are clearance-matched.

[0071] Continue to see Figure 3The second part of the conductor 3 includes a connecting shaft 35, which is located in the radial direction of the circumference of the intermediate connecting rod 32. One end of the connecting shaft 35 is connected to one of the two joints 31 in the conductor 3, and the other end of the connecting shaft 35 is connected to the blade 100. The blade 100 is located at the rotation center of the intermediate connecting rod 32. When the intermediate connecting rod 32 rotates, the connecting shaft 35 rotates accordingly, and the blade 100 on the other end of the connecting shaft 35 rotates around the rotation center of the conductor 3.

[0072] Figure 7 yes Figure 1 Schematic diagram of the structure of the magnetic component, combined with Figure 7 Optionally, the magnet assembly 2 includes a first permanent magnet 21, a second permanent magnet 22 and a protective shell 23. The first permanent magnet 21 and the second permanent magnet 22 are both embedded in the protective shell 23 and connected to the protective shell 23, and the N pole of the first permanent magnet 21 and the S pole of the second permanent magnet 22 are spaced and arranged oppositely. The protective shell 23 is connected to the outer shell 1, and the middle part of the protective shell 23 is movably connected to the conductor 3.

[0073] In the above implementation, the magnet assembly 2 is configured as a structure of a first permanent magnet 21, a second permanent magnet 22 and a protective shell 23, so that the protective shell 23 can provide a mounting base for the first permanent magnet 21 and the second permanent magnet 22, so that the first permanent magnet 21 and the second permanent magnet 22 can be located in the housing 1. The configuration of the first permanent magnet 21 and the second permanent magnet 22 can form a constant magnetic field to provide a prerequisite for the movement of the conductor 3.

[0074] Optionally, the protective shell 23 includes a first shell 231 and a second shell 232 , and the first shell 231 and the second shell 232 are arranged opposite to each other and spaced apart.

[0075] The conductor 3 is located between the first shell 231 and the second shell 232 , and is in contact with the first shell 231 and the second shell 232 , respectively.

[0076] In the above implementation, the protective shell 23 is set in the form of two half shells of the first shell 231 and the second shell 232, so that the first shell 231 and the second shell 232 can be arranged at an interval so that a space for clamping the conductor 3 is formed between the first shell 231 and the second shell 232 to provide space for the movement of the conductor 3.

[0077] That is to say, the first shell 231 and the second shell 232 are arranged at intervals, which can not only provide a mounting base for the first permanent magnet 21 and the second permanent magnet 22 , but also facilitate the placement of the conductor 3 without interfering with the movement of the conductor 3 .

[0078] Optionally, the first shell 231 and the second shell 232 have the same structure. The first shell 231 and the second shell 232 are both hemispherical shells. Correspondingly, the first permanent magnet 21 and the second permanent magnet 22 are also spherical crown-shaped permanent magnets.

[0079] The first permanent magnet 21 is embedded in the first shell 231, and the N pole of the first permanent magnet 21 is the top surface of the spherical cap. The S pole of the first permanent magnet 21 is the bottom surface of the spherical cap. The S pole of the first permanent magnet 21 is connected to the first shell 231 by glue or the like.

[0080] The second permanent magnet 22 is embedded in the second shell 232, and the S pole of the second permanent magnet 22 is the top surface of the spherical cap. The N pole of the second permanent magnet 22 is the bottom surface of the spherical cap. The N pole of the second permanent magnet 22 is connected to the second shell 232 by gluing.

[0081] In this way, the hemispherical form can save space occupied by the magnet assembly 2 on the one hand, and on the other hand, the first shell 231 and the second shell 232 respectively provide circular rotation planes for the conductor 3, so that the conductor 3 can rotate on the circular semi-section between the first shell 231 and the second shell 232 to limit the conductor 3.

[0082] Optionally, the housing 1 includes two half shells 11, the two half shells 11 are arranged at an interval, and the conductor 3 is located between the two half shells 11 and is respectively in contact with the two half shells 11. When in use, the two half shells 11 can be fixed in corresponding places by fasteners such as screws.

[0083] The following briefly introduces the working process of the rotary drive device provided in the embodiment of the present disclosure:

[0084] Combination Figure 2 When the power source is energized to the conductor 3 (the current direction of the conductor 3 is the positive direction of the X axis), the conductor 3 generates an Ampere force (the direction of the Ampere force is the positive direction of the Z axis) under the action of the magnetic field B between the first permanent magnet 21 and the second permanent magnet 22 (the direction of the magnetic field is the negative direction of the Y axis), and the Ampere force is perpendicular to the direction of the magnetic field and the direction of the current. When a continuous current passes through the conductor 3, the magnitude of the Ampere force of the conductor 3 remains stable.

[0085] When the cable 411 is driven by the driving component 42, the cable 411 in the channel 300 can move continuously relative to the conductor 3 at a constant speed V (the direction of the speed V is the positive direction of the X axis). 安Therefore, when the cable 411 moves at a speed V, the Ampere force will continuously pull the cable 411 to deflect inward, causing the cable 411 to rotate in the XOZ plane (the rotation axis of the cable 411 is parallel to the Y axis), and the cable 411 performs a circular motion, thereby driving the conductor 3 to perform a circular motion, and finally outputting an electromagnetic force through the conductor 3 to drive the blade 100 to rotate, thereby reducing power loss and improving work efficiency.

[0086] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A rotary drive device, characterized in that: The rotary drive device comprises a housing (1), a magnet assembly (2), a conductor (3) and a motion assembly (4); The magnet assembly (2) is located inside the housing (1) and is connected to the housing (1), and a magnetic field is formed inside the magnet assembly (2); The conductor (3) comprises a first part and a second part which are connected to each other, the first part being located in the magnetic field and movably connected to the housing (1), the two ends of the first part being electrically connected to the positive pole and the negative pole of the power supply respectively, the direction of the current in the conductor (3) being perpendicular to the magnetic field direction of the magnetic field, and the second part being located outside the housing (1) and being used to be connected to a driven object; The motion component (4) is located in the housing (1) and comprises a connecting component (41) and a driving component (42); the connecting component (41) is partially located in the magnetic field and is connected to the conductor (3); the driving component (42) is used to drive the connecting component (41) to move relative to the conductor (3) along the direction of the current in the conductor (3) so as to rotate synchronously with the conductor (3).

2. The rotary drive device according to claim 1, characterized in that: The first part of the conductor (3) has a channel (300) inside, and the extending direction of the channel (300) is the same as the direction of the current in the conductor (3); The connecting component (41) comprises a cable (411), wherein a portion of the cable (411) is located in the channel (300), and the cable (411) is movable in the channel (300), and an outer wall of the cable (411) located in the channel (300) is in contact with an inner wall of the channel (300).

3. The rotary drive device according to claim 2, characterized in that: The driving component (42) comprises a pulley block (421) and a driving structure (422); The cable (411) is slidably wound in the pulley block (421), and the driving structure (422) is connected to the pulley block (421) for driving the pulley block (421) to rotate.

4. The rotary drive device according to claim 3, characterized in that: The pulley block (421) includes at least two driving wheels (4211), and the at least two driving wheels (4211) are arranged in a row along a direction perpendicular to the direction of the magnetic field, and the cable (411) is sequentially wound around the outside of the driving wheels (4211) along the arrangement direction of the at least two driving wheels (4211).

5. The rotary drive device according to claim 4, characterized in that: The motion component (4) further comprises a connecting member (43) and a wire support (44), wherein the connecting member (43) is respectively connected to the top of the wire support (44), the at least two driving wheels (4211) are both located in the wire support (44) and are respectively rotatably connected to the wire support (44), and the wire support (44) has wire holes (440) on opposite sides, and the cable (411) is located in the two wire holes (440).

6. The rotary drive device according to claim 2, characterized in that: The first part of the conductor (3) comprises two joints (31) and an intermediate connecting rod (32); The two connectors (31) are respectively located at two ends of the intermediate connecting rod (32) and are respectively connected to the two ends of the intermediate connecting rod (32); the two connectors (31) are respectively electrically connected to the positive electrode and the negative electrode of the power source; The passage (300) is located within the intermediate connecting rod (32).

7. The rotary drive device according to claim 6, characterized in that: The connector (31) is a U-shaped head, and the U-shaped head has a U-shaped cavity for accommodating an electric wire.

8. The rotary drive device according to claim 6, characterized in that: The conductor (3) further comprises two elastic clips (33), wherein the two elastic clips (33) are respectively located in the outer walls of the intermediate connecting rod (32) close to both ends thereof, and are both located in the channel (300); Each of the two elastic clips (33) comprises two spring sheets (331), and the two spring sheets (331) in each of the elastic clips (33) are arranged opposite to each other and form a V-shaped opening, wherein the opening size of the V-shaped opening gradually decreases along the moving direction of the cable (411).

9. The rotary drive device according to any one of claims 1 to 8, characterized in that: The magnet assembly (2) comprises a first permanent magnet (21), a second permanent magnet (22) and a protective shell (23); The first permanent magnet (21) and the second permanent magnet (22) are both embedded in the protective shell (23) and connected to the protective shell (23), and the N pole of the first permanent magnet (21) and the S pole of the second permanent magnet (22) are arranged relative to each other with a spacing; The protective shell (23) is connected to the outer shell (1).

10. The rotary drive device according to claim 9, characterized in that: The protective shell (23) comprises a hemispherical first shell (231) and a hemispherical second shell (232), the first shell (231) and the second shell (232) are arranged opposite to each other and spaced apart, and the conductor (3) is movably located between the first shell (231) and the second shell (232).

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