CN109756149B - Giant magnetostrictive actuator - Google Patents
Giant magnetostrictive actuator Download PDFInfo
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- CN109756149B CN109756149B CN201910224558.0A CN201910224558A CN109756149B CN 109756149 B CN109756149 B CN 109756149B CN 201910224558 A CN201910224558 A CN 201910224558A CN 109756149 B CN109756149 B CN 109756149B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 239000012782 phase change material Substances 0.000 claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 13
- 230000005284 excitation Effects 0.000 claims description 8
- 230000008093 supporting effect Effects 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a giant magnetostrictive actuator, which controls the output displacement by adjusting the input current of an exciting coil; the shell, the disc spring, the upper end cover and the cross-shaped output rod form a pre-tightening device; the water-cooling cavity outer sleeve, the phase change material and the threaded coil framework form a phase change temperature control device; the water cooling device comprises a threaded coil framework, a water outlet pipe, a water cooling cavity, a water tank, a water pump and a water inlet pipe; the upper and lower magnetic rings, the U-shaped upper and lower magnetic conductive sheets, the magnetic conductive sleeve, the permanent magnet and the cross-shaped output rod are made of magnetic conductive materials and form a closed magnetic circuit system with the giant magnetostrictive rod. The permanent magnet providing the bias magnetic field and the magnetic conduction sleeve are combined into a whole, so that the structure is more compact, and the volume of the actuator can be reduced; the phase change temperature control device and the cooling water circulation device are combined to cooperate to bring the heat inside the actuator to the external environment, so that the output of thermal errors can be effectively restrained, and the phase change temperature control device can be used in the fields of ultra-precise machining, vibration control and the like.
Description
Technical Field
The invention relates to a structural design of a giant magnetostrictive actuator device.
Background
The giant magnetostrictive actuator is a device which takes a giant magnetostrictive material as a core element and can realize the mutual conversion of magnetic energy and mechanical energy. The actuator made of the giant magnetostrictive material has the advantages of low driving voltage, small volume, no noise, large driving force and the like, but also has the advantages of large volume, high heat generation, small output displacement, low working efficiency of the actuator and no application requirement in industrial production. Therefore, the development of the giant magnetostrictive actuator with the characteristics of small volume, large displacement, low heat productivity and the like has important application value.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the giant magnetostrictive actuator device with simple structure, small volume, large displacement, low heating value and high reliability.
In order to solve the technical problems, the invention adopts the following technical scheme:
A giant magnetostrictive actuator comprises a base, a lower magnetic conductive ring, a U-shaped lower magnetic conductive sheet, a shell, a magnetic conductive sleeve, a permanent magnet, an exciting coil, a coil framework with threads, an upper magnetic conductive ring, a disc spring, an upper end cover, a cross-shaped output rod, a U-shaped upper magnetic conductive sheet, a water outlet pipe, a phase change material, a giant magnetostrictive rod, a water cooling cavity inner sleeve, a water cooling cavity outer sleeve and a water inlet pipe;
the shell is arranged on the base, the lower magnetic conducting ring is arranged on the base, and the U-shaped lower magnetic conducting sheet is arranged on the lower magnetic conducting ring;
The magnetic conduction sleeve and the permanent magnet are mutually staggered and overlapped to be fixed to form a combined sleeve, the combined sleeve is positioned in the shell, the lower magnetic conduction ring is fixed with the lower end face of the combined sleeve, and the upper magnetic conduction ring is fixed with the upper end of the combined sleeve; the giant magnetostrictive rod is vertically arranged in the middle of the combined sleeve, the bottom end of the giant magnetostrictive rod is clamped in the groove of the U-shaped lower magnetic conductive sheet, the top end of the giant magnetostrictive rod is clamped in the groove of the U-shaped upper magnetic conductive sheet, the U-shaped lower magnetic conductive sheet, the giant magnetostrictive rod and the U-shaped upper magnetic conductive sheet are positioned in the inner sleeve of the water cooling cavity, the U-shaped upper magnetic conductive sheet is in clearance fit with the inner wall of the inner sleeve of the water cooling cavity, the outer sleeve of the water cooling cavity is sleeved outside the inner sleeve of the water cooling cavity, a closed water cooling cavity is formed between the outer sleeve of the water cooling cavity and the inner sleeve of the water cooling cavity, the threaded coil framework is sleeved outside the outer sleeve of the water cooling cavity, the phase change material is arranged between the outer sleeve of the water cooling cavity and the threaded coil framework, and the exciting coil is wound outside the threaded coil framework and the combined sleeve;
The upper end cover is arranged at the top of the shell, the cross-shaped output rod is arranged between the upper end cover and the upper magnetic conduction ring, the cross-shaped output rod consists of a vertical output rod and a support plate arranged on the outer circle of the vertical output rod, a disc spring is sleeved on the vertical output rod, one end of the disc spring is pressed on the upper end cover, the other end of the disc spring is pressed on the support plate, the support plate is pressed on the upper magnetic conduction ring, the upper end of the vertical output rod extends out of the upper end cover and is in clearance fit with the upper end cover, the lower end of the vertical output rod passes through the upper magnetic conduction ring and is in clearance fit with the upper magnetic conduction ring, and the lower end surface of the vertical output rod is pressed on the U-shaped upper magnetic conduction plate;
the water outlet pipe and the water inlet pipe respectively penetrate through the water cooling cavity outer sleeve, the threaded coil framework and the shell, the water outlet pipe is close to the upper magnetic conduction ring, the water inlet pipe is close to the lower magnetic conduction ring, and one ends of the water outlet pipe and the water inlet pipe are respectively communicated with the water cooling cavity.
As a preferable scheme of the invention, the lower magnetic conduction ring, the U-shaped lower magnetic conduction sheet, the magnetic conduction sleeve, the permanent magnet, the upper magnetic conduction ring, the cross-shaped output rod and the U-shaped upper magnetic conduction sheet are all made of magnetic conduction materials, and the lower magnetic conduction ring, the U-shaped lower magnetic conduction sheet, the magnetic conduction sleeve, the permanent magnet, the upper magnetic conduction ring, the cross-shaped output rod, the U-shaped upper magnetic conduction sheet and the giant magnetostrictive rod form a closed magnetic circuit; the base, the shell and the upper end cover are made of non-magnetic materials; the threaded coil framework is made of nylon materials; the phase change material is sodium sulfate decahydrate material.
As another preferential scheme of the invention, the device also comprises a positioning bolt, wherein the positioning bolt is made of non-magnetic conductive material; the positioning bolt penetrates through the base and the lower magnetic conducting ring from the center of the bottom of the base and is screwed into a threaded hole formed in the bottom of the U-shaped lower magnetic conducting piece.
As another preferential scheme of the invention, the device also comprises a water tank and a water pump, wherein the other end of the water inlet pipe is communicated with the inside of the water tank through the water pump; the other end of the water outlet pipe is communicated with the water tank.
As an improvement of the invention, the shell, the disc spring, the upper end cover and the cross-shaped output rod are combined to form a pre-tightening device.
As another improvement scheme of the invention, the water-cooling cavity outer sleeve, the phase change material and the threaded coil framework form a phase change temperature control device.
As a further improvement scheme of the invention, the water outlet pipe, the water cooling cavity, the water tank, the water pump and the water inlet pipe form a cooling water circulation device.
As a further improvement of the invention, an external thread is arranged on the outer circle of the top of the shell, and the upper end cover is sleeved on the top of the shell through an internal thread arranged on the upper end cover.
As a further improvement scheme of the invention, threaded holes are uniformly distributed on the upper part of the magnetic conduction sleeve at the upper end of the combined sleeve and the lower part of the magnetic conduction sleeve at the lower end of the combined sleeve respectively in the circumferential direction, the lower magnetic conduction ring is fixedly connected with the magnetic conduction sleeve at the lower end of the combined sleeve through screws, and the upper magnetic conduction ring is fixedly connected with the magnetic conduction sleeve at the upper end of the combined sleeve through screws; the magnetic conduction sleeve and the permanent magnet are fixed in a bonding mode.
As a further improvement scheme of the invention, three permanent magnets with annular structures are arranged between the lower magnetic conducting ring and the upper magnetic conducting ring, and the three permanent magnets are identical in shape, size and material and have identical magnetization directions.
Compared with the prior art, the invention has the following technical effects:
1. the phase change temperature control device is combined with the cooling water circulation device to bring the heat inside the giant magnetostrictive actuator to the external environment, so that the temperature of the magnetostrictive rod is kept constant, long-time temperature control can be implemented, thermal error output can be effectively inhibited, the displacement output control precision can reach submicron level or even higher, and the giant magnetostrictive rod can adapt to various severe working environments.
2. The permanent magnet providing the bias magnetic field is sleeved with the magnetic conduction, so that the structure is more compact, and the volume of the actuator can be reduced; such a structure also facilitates heat dissipation.
Drawings
FIG. 1 is a schematic diagram of a giant magnetostrictive actuator assembly.
In the figure, 1 is a base; 2-positioning bolts; 3-a lower magnetic conduction ring; 4-U-shaped lower magnetic conductive sheet; 5-a housing; 6, a magnetic conduction sleeve; 7-permanent magnet; 8-exciting coil; 9-a threaded coil former; 10-upper magnetic conducting ring; 11-a disc spring; 12-an upper end cover; 13-a cross-shaped output rod; 14-U-shaped upper magnetic conductive sheet; 15-a water outlet pipe; 16-phase change material; 17-a giant magnetostrictive rod; 18-water cooling cavity inner sleeve; 19-water cooling cavity outer sleeve; 20-cooling water; 21-a water tank; 22-a water pump; 23-water inlet pipe.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the giant magnetostrictive actuator comprises a base 1, a positioning bolt 2, a lower magnetic conducting ring 3, a U-shaped lower magnetic conducting sheet 4, a shell 5, a magnetic conducting sleeve 6, a permanent magnet 7, an exciting coil 8, a threaded coil framework 9, an upper magnetic conducting ring 10, a disc spring 11, an upper end cover 12, a cross-shaped output rod 13, a U-shaped upper magnetic conducting sheet 14, a water outlet pipe 15, a phase change material 16, a giant magnetostrictive rod 17, a water cooling cavity inner sleeve 18, a water cooling cavity outer sleeve 19, cooling water 20, a water tank 21, a water pump 22 and a water inlet pipe 23.
The shell 5 is welded on the base 1 by taking the center of the base 1 as the center, the lower magnetic conductive ring 3 is arranged on the base 1, and the U-shaped lower magnetic conductive sheet 4 is arranged on the lower magnetic conductive ring 3. The bottom of the U-shaped lower magnetic conduction piece 4 is provided with a threaded hole, and the positioning bolt 2 penetrates through the base 1 and the lower magnetic conduction ring 3 from the bottom center of the base 1 and is screwed into the threaded hole arranged at the bottom of the U-shaped lower magnetic conduction piece 4.
The magnetic sleeves 6 and the permanent magnets 7 are mutually staggered and overlapped to form a combined sleeve, and in the embodiment, the combined sleeve is formed by mutually staggered and overlapped four magnetic sleeves 6 and three permanent magnets 7, and the magnetic sleeves 6 and the permanent magnets 7 are fixed in a bonding mode. The combined sleeve is positioned in the shell 5, the lower magnetic conduction ring 3 is fixed with the lower end face of the combined sleeve, and the upper magnetic conduction ring 10 is fixed with the upper end of the combined sleeve. In this embodiment, threaded holes are uniformly distributed on the upper portion of the magnetic conductive sleeve 6 at the upper end of the combination sleeve and the lower portion of the magnetic conductive sleeve 6 at the lower end of the combination sleeve in the circumferential direction respectively, the lower magnetic conductive ring 3 is fixedly connected with the magnetic conductive sleeve 6 at the lower end of the combination sleeve through a screw, and the upper magnetic conductive ring 10 is fixedly connected with the magnetic conductive sleeve 6 at the upper end of the combination sleeve through a screw. The giant magnetostrictive rod 17 is vertically arranged in the middle of the combined sleeve, the bottom end of the giant magnetostrictive rod 17 is clamped in the groove of the U-shaped lower magnetic conduction sheet 4, the top end of the giant magnetostrictive rod 17 is clamped in the groove of the U-shaped upper magnetic conduction sheet 14, the water cooling cavity inner sleeve 18 is arranged outside the giant magnetostrictive rod 17, the U-shaped lower magnetic conduction sheet 4, the giant magnetostrictive rod 17 and the U-shaped upper magnetic conduction sheet 14 are all positioned in the water cooling cavity inner sleeve 18, the U-shaped upper magnetic conduction sheet 14 is in clearance fit with the inner wall of the water cooling cavity inner sleeve 18, the water cooling cavity outer sleeve 19 is sleeved outside the water cooling cavity inner sleeve 18, and a closed water cooling cavity is formed between the water cooling cavity outer sleeve 19 and the water cooling cavity inner sleeve 18. The threaded coil framework 9 is sleeved outside the water cooling cavity outer sleeve 19, the upper part and the lower part of the threaded coil framework 9 extend inwards and outwards, the inwards extending parts of the upper part and the lower part of the threaded coil framework 9 are abutted against the outer wall of the water cooling cavity outer sleeve 19, and the outwards extending parts of the upper part and the lower part of the threaded coil framework 9 are abutted against the inner wall of the combined sleeve. The phase change material 16 is installed between the water cooling cavity outer sleeve 19 and the threaded coil bobbin 9, and the phase change material 16 is located between the upper and lower inward extending portions of the threaded coil bobbin 9. The water-cooling cavity outer sleeve 19, the phase change material 16 and the threaded coil skeleton 9 form a phase change temperature control device. The excitation coil 8 is wound around the outside of the threaded bobbin 9 and between the threaded bobbin 9 and the combination sleeve, and the excitation coil 8 is located between the upper and lower outward extending portions of the threaded bobbin 9.
The upper end cover 12 is arranged at the top of the shell 5, external threads are arranged on the outer circle of the top of the shell 5, internal threads are arranged in the upper end cover 12, and the upper end cover 12 is sleeved on the external threads of the top of the shell 5 through the internal threads arranged on the upper end cover 12. The cross output rod 13 is arranged between the upper end cover 12 and the upper magnetic conducting ring 10, the cross output rod 13 is integrally formed by a vertical output rod and a supporting plate arranged on the outer circle of the vertical output rod, a disc spring 11 is sleeved on the vertical output rod, one end of the disc spring 11 is pressed on the upper end cover 12, the other end of the disc spring 11 is pressed on the supporting plate, the supporting plate is pressed on the upper magnetic conducting ring 10, the upper end of the vertical output rod extends out of the upper end cover 12 and is in clearance fit with the upper end cover 12, the lower end of the vertical output rod passes through the upper magnetic conducting ring 10 and is in clearance fit with the upper magnetic conducting ring 10, and the lower end face of the vertical output rod is pressed on the U-shaped upper magnetic conducting plate 14.
The water outlet pipe 15 and the water inlet pipe 23 respectively penetrate through the water cooling cavity outer sleeve 19, the threaded coil framework 9 and the shell 5, the water outlet pipe 15 is close to the upper magnetic conduction ring 10, the water inlet pipe 23 is close to the lower magnetic conduction ring 3, and one ends of the water outlet pipe 15 and the water inlet pipe 23 are respectively communicated with the water cooling cavity. The other end of the water inlet pipe 23 is communicated with the water tank 21 through a water pump 22; the other end of the water outlet pipe 15 is communicated with the water tank 21. The water outlet pipe 15, the water cooling cavity, the water tank 21, the water pump 22 and the water inlet pipe 23 form a cooling water circulation device, and the cooling water 20 contained in the water tank 21 is continuously pumped into the water cooling cavity through the water pump 22 and the water inlet pipe 23 and then flows back into the water tank 21 through the water outlet pipe 15. The invention combines the cooperation between the phase change temperature control device and the cooling water circulation device to bring the heat in the giant magnetostrictive actuator device to the external environment, ensures that the temperature of the magnetostrictive rod 17 is kept constant, can implement long-time temperature control, can effectively inhibit thermal error output, has displacement output control precision reaching submicron level or even higher, and can adapt to various severe working environments.
The lower magnetic conduction ring 3, the U-shaped lower magnetic conduction sheet 4, the magnetic conduction sleeve 6, the permanent magnet 7, the upper magnetic conduction ring 10, the cross-shaped output rod 13 and the U-shaped upper magnetic conduction sheet 14 are all made of magnetic conduction materials, and the lower magnetic conduction ring 3, the U-shaped lower magnetic conduction sheet 4, the magnetic conduction sleeve 6, the permanent magnet 7, the upper magnetic conduction ring 10, the cross-shaped output rod 13, the U-shaped upper magnetic conduction sheet 14 and the giant magnetostrictive rod 17 form a closed magnetic circuit. The base 1, the shell 5, the upper end cover 12 and the positioning bolt 2 are made of non-magnetic materials; the coil frame 9 with threads is made of nylon material; the phase change material 16 is a sodium sulfate decahydrate material.
Three permanent magnets 7 with annular structures are arranged between the lower magnetic ring 3 and the upper magnetic ring 10, and the three permanent magnets 7 have the same shape, size and material and the same magnetization direction. The casing 5, the disc spring 11, the upper end cover 12 and the cross-shaped output rod 13 are combined to form a pre-tightening device, so that different pre-pressures can be applied to the giant magnetostrictive rod 17, and the giant magnetostrictive rod 17 can obtain larger expansion and contraction amount. The excitation coil 8 is regulated to input alternating current, a driving magnetic field is generated to control the extension or shortening of the giant magnetostrictive rod 17, and the U-shaped lower magnetic conducting sheet 4 has a supporting effect on the giant magnetostrictive rod 17, so that the length change amount of the giant magnetostrictive rod 17 is output outwards through the cross-shaped output rod 13 and is expressed as the displacement output of the giant magnetostrictive micro displacement actuator.
Under the action of input alternating current, the giant magnetostrictive actuator device can generate two loss: the hysteresis loss of the giant magnetostrictive rod 17 and the joule loss of the exciting coil 8. The joule loss of the excitation coil 8 will mainly cause the excitation coil temperature to rise. Under the action of the temperature difference, heat is transferred to two sides along the radial direction of the exciting coil 8, and part of the heat is transferred to the cooling water 20 along the threaded coil frame 9; another portion of the heat is transferred to phase change material 16 along water cooled inner sleeve 18 and a portion of phase change material 16 begins to change from a solid state to a liquid state, absorbing heat. The hysteresis loss of the giant magnetostrictive rod 17 mainly causes the temperature of the giant magnetostrictive rod 17 to rise. Under the action of the temperature difference, heat is transferred from the giant magnetostrictive rod 17 to the cooling water 20 along the inner sleeve 18 of the water cooling cavity, and the cooling water 20 absorbs the heat, so that the temperature of the giant magnetostrictive rod 17 can be kept unchanged basically. Since the temperature of the cooling water 20 is lower than the phase transition temperature of the phase change material 16, part of the heat absorbed by the phase change material 16 will be transferred to the cooling water 20 through the water cooling chamber outer sleeve 19. Under the drive of the water pump 22, the cooling water 20 flows into the giant magnetostrictive actuator device from the water tank 21 through the water outlet pipe 15, and then flows back to the water tank 21 from the water inlet pipe 23, so that a circulation flow is completed. Through one circulation, the cooling water 20 can transfer heat from the inside of the giant magnetostrictive actuator device to the external environment, so that the phase change material 16 is ensured not to lose control of temperature due to solid-liquid transformation, the temperature of the whole giant magnetostrictive actuator device is basically maintained unchanged, the temperature rise of a driver and the output of thermal deformation errors are inhibited, and the output displacement control precision is improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (7)
1. A giant magnetostrictive actuator device, characterized in that: the magnetic field generator comprises a base (1), a lower magnetic conduction ring (3), a U-shaped lower magnetic conduction sheet (4), a shell (5), a magnetic conduction sleeve (6), a permanent magnet (7), an excitation coil (8), a coil framework (9) with threads, an upper magnetic conduction ring (10), a disc spring (11), an upper end cover (12), a cross-shaped output rod (13), a U-shaped upper magnetic conduction sheet (14), a water outlet pipe (15), a phase change material (16), a giant magnetostrictive rod (17), a water cooling cavity inner sleeve (18), a water cooling cavity outer sleeve (19) and a water inlet pipe (23);
the shell (5) is arranged on the base (1), the lower magnetic conduction ring (3) is arranged on the base (1), and the U-shaped lower magnetic conduction sheet (4) is arranged on the lower magnetic conduction ring (3);
The magnetic conduction sleeve (6) and the permanent magnet (7) are mutually staggered and overlapped to be fixed to form a combined sleeve, the combined sleeve is positioned in the shell (5), the lower magnetic conduction ring (3) is fixed with the lower end face of the combined sleeve, and the upper magnetic conduction ring (10) is fixed with the upper end of the combined sleeve; the magnetic field excitation device is characterized in that the giant magnetostrictive rod (17) is vertically arranged in the middle of the combined sleeve, the bottom end of the giant magnetostrictive rod (17) is clamped in a groove of the U-shaped lower magnetic conduction sheet (4), the top end of the giant magnetostrictive rod (17) is clamped in a groove of the U-shaped upper magnetic conduction sheet (14), the U-shaped lower magnetic conduction sheet (4), the giant magnetostrictive rod (17) and the U-shaped upper magnetic conduction sheet (14) are positioned in the water-cooling cavity inner sleeve (18), the U-shaped upper magnetic conduction sheet (14) is in clearance fit with the inner wall of the water-cooling cavity inner sleeve (18), the water-cooling cavity outer sleeve (19) is sleeved outside the water-cooling cavity inner sleeve (18), a closed water-cooling cavity is formed between the water-cooling cavity outer sleeve (19) and the water-cooling cavity inner sleeve (18), the threaded coil skeleton (9) is sleeved outside the water-cooling cavity outer sleeve (19), the phase change material (16) is arranged between the water-cooling cavity outer sleeve (19) and the threaded coil skeleton (9), and the excitation coil (8) is wound outside the threaded coil skeleton (9) and is positioned between the threaded coil skeleton (9) and the combined sleeve;
The upper end cover (12) is arranged at the top of the shell (5), the cross-shaped output rod (13) is arranged between the upper end cover (12) and the upper magnetic conducting ring (10), the cross-shaped output rod (13) consists of a vertical output rod and a supporting plate arranged on the outer circle of the vertical output rod, the disc spring (11) is sleeved on the vertical output rod, one end of the disc spring (11) is pressed on the upper end cover (12), the other end of the disc spring (11) is pressed on the supporting plate, the supporting plate is pressed on the upper magnetic conducting ring (10), the upper end of the vertical output rod extends out of the upper end cover (12) and is in clearance fit with the upper end cover (12), the lower end of the vertical output rod penetrates through the upper magnetic conducting ring (10) and is in clearance fit with the upper magnetic conducting ring (10), and the lower end surface of the vertical output rod is pressed on the U-shaped upper magnetic conducting piece (14);
The water outlet pipe (15) and the water inlet pipe (23) respectively penetrate through the water cooling cavity outer sleeve (19), the threaded coil framework (9) and the shell (5), the water outlet pipe (15) is close to the upper magnetic conducting ring (10), the water inlet pipe (23) is close to the lower magnetic conducting ring (3), and one ends of the water outlet pipe (15) and the water inlet pipe (23) are respectively communicated with the water cooling cavity;
the shell (5), the disc spring (11), the upper end cover (12) and the cross-shaped output rod (13) are combined to form a pre-tightening device;
The water cooling cavity outer sleeve (19), the phase change material (16) and the threaded coil framework (9) form a phase change temperature control device;
The water outlet pipe (15), the water cooling cavity, the water tank (21), the water pump (22) and the water inlet pipe (23) form a cooling water circulation device.
2. The giant magnetostrictive actuator assembly of claim 1, wherein: the lower magnetic conduction ring (3), the U-shaped lower magnetic conduction sheet (4), the magnetic conduction sleeve (6), the permanent magnet (7), the upper magnetic conduction ring (10), the cross-shaped output rod (13) and the U-shaped upper magnetic conduction sheet (14) are all made of magnetic conduction materials, and the lower magnetic conduction ring (3), the U-shaped lower magnetic conduction sheet (4), the magnetic conduction sleeve (6), the permanent magnet (7), the upper magnetic conduction ring (10), the cross-shaped output rod (13), the U-shaped upper magnetic conduction sheet (14) and the giant magnetostrictive rod (17) form a closed magnetic circuit; the base (1), the shell (5) and the upper end cover (12) are made of non-magnetic materials; the threaded coil framework (9) is made of nylon materials; the phase change material (16) is made of sodium sulfate decahydrate.
3. The giant magnetostrictive actuator assembly of claim 2, wherein: the device also comprises a positioning bolt (2), wherein the positioning bolt (2) is made of non-magnetic conductive materials; the positioning bolt (2) penetrates through the base (1) and the lower magnetic conduction ring (3) from the center of the bottom of the base (1) and is screwed into a threaded hole formed in the bottom of the U-shaped lower magnetic conduction sheet (4).
4. A giant magnetostrictive actuator arrangement according to claim 3, wherein: the device also comprises a water tank (21) and a water pump (22), wherein the other end of the water inlet pipe (23) is communicated with the inside of the water tank (21) through the water pump (22); the other end of the water outlet pipe (15) is communicated with the water tank (21).
5. A giant magnetostrictive actuator arrangement according to any of claims 1-4, characterized in that: external threads are arranged on the outer circle of the top of the shell (5), and the upper end cover (12) is sleeved on the top of the shell (5) in a screwing mode through internal threads arranged on the upper end cover.
6. A giant magnetostrictive actuator arrangement according to any of claims 1-4, characterized in that: screw holes are uniformly distributed on the upper part of the magnetic conduction sleeve (6) at the upper end of the combined sleeve and the lower part of the magnetic conduction sleeve (6) at the lower end of the combined sleeve respectively in the circumferential direction, the lower magnetic conduction ring (3) is fixedly connected with the magnetic conduction sleeve (6) at the lower end of the combined sleeve through screws, and the upper magnetic conduction ring (10) is fixedly connected with the magnetic conduction sleeve (6) at the upper end of the combined sleeve through screws; the magnetic conduction sleeve (6) and the permanent magnet (7) are fixed in a bonding mode.
7. A giant magnetostrictive actuator arrangement according to any of claims 1-4, characterized in that: three permanent magnets (7) with annular structures are arranged between the lower magnetic conducting ring (3) and the upper magnetic conducting ring (10), and the three permanent magnets (7) are identical in shape, size and material and magnetization direction.
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| CN201910224558.0A CN109756149B (en) | 2019-03-23 | 2019-03-23 | Giant magnetostrictive actuator |
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| CN201910224558.0A CN109756149B (en) | 2019-03-23 | 2019-03-23 | Giant magnetostrictive actuator |
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| CN109756149B true CN109756149B (en) | 2024-04-26 |
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| CN111490701B (en) * | 2020-05-25 | 2021-10-08 | 东华大学 | Multi-ring bias magnetostrictive driver excited by parallel stranded wire harness |
| CN111485842B (en) * | 2020-06-23 | 2022-04-22 | 东北石油大学 | High-frequency vibration exciter for efficient rock breaking of resonance drilling |
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