CN109027046B - Small-size large-controllable-range magnetorheological clutch - Google Patents
Small-size large-controllable-range magnetorheological clutch Download PDFInfo
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- CN109027046B CN109027046B CN201811166532.7A CN201811166532A CN109027046B CN 109027046 B CN109027046 B CN 109027046B CN 201811166532 A CN201811166532 A CN 201811166532A CN 109027046 B CN109027046 B CN 109027046B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/008—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being carried by a fluid, to vary viscosity when subjected to electric change, i.e. electro-rheological or smart fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/001—Electric arrangements for clutch control
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a small-size large-controllable-range magnetorheological clutch, which comprises an outer shell, a driving mechanism and a driven mechanism, wherein the driving mechanism comprises an input shaft, an input disc and a permanent magnet; the driven mechanism comprises an output shaft, output discs and a connecting cylinder, wherein each output disc comprises at least two output discs, the output disc at the bottommost end is fixedly sleeved on the output shaft, the outer edges of the output discs are connected into a whole through the connecting cylinder, a closed annular liquid storage cavity is formed between the output discs at the topmost end and the bottommost end, magnetorheological liquid is filled in the annular liquid storage cavity, an annular accommodating cavity is formed between every two adjacent output discs, and each input disc is positioned in the corresponding annular accommodating cavity; an inner liquid storage cavity is arranged inside the input disc; the shell is also internally provided with an excitation coil which surrounds the outside of the connecting cylinder. The invention has the advantages that: the purpose that the passive torque is small enough when no current is excited is achieved.
Description
Technical Field
The invention relates to a clutch, in particular to a small-size large-controllable-range magnetorheological clutch.
Background
The mechanical clutch of transmission is formed by engine flywheel (namely driving part), driven plate (namely driven part), hold-down spring (namely hold-down mechanism) and operating mechanism. The driving part, the driven part and the pressing mechanism are basic structures which ensure that the clutch is in a combined state and can transmit power, and the operating mechanism is mainly a device for separating the clutch. When the clutch works, the compression spring compresses the driven disc with the friction plate on the engine flywheel, and the torque of the engine transmits power to the driven disc by means of friction force. However, the mechanical clutch cannot realize accurate real-time control of the output torque, and the parts are worn too quickly due to rigid matching between the parts. In addition, the mechanical clutch is difficult to achieve smooth and soft transmission of the input torque, and sudden change of the output torque thereof deteriorates the load operation effect.
The magnetorheological clutch is a typical application of magnetorheological fluid based on an intelligent material, the magnetorheological fluid is an intelligent material with rheological characteristics, and under the action of a magnetic field, the material property (particularly the viscosity) of the magnetorheological fluid can be rapidly (millisecond), continuously and reversibly adjusted between a Newtonian fluid state and a semi-solid state. According to different flowing modes of the magnetorheological fluid in the damping channel, the general working modes can be divided into two types: flow mode and shear mode. The magnetorheological clutch based on the magnetorheological fluid has the advantages of millisecond-level response speed, large torque transmission range, simple structure, good durability, low energy consumption and the like. Under the control of the magnetic field, the transmission torque of the magnetorheological clutch can be adjusted in real time.
The magnetorheological clutch in the prior art realizes the purposes of continuously adjustable output torque and soft engagement by utilizing the shear stress generated by the magnetorheological fluid under the action of a magnetic field. However, the magnetorheological clutch only applying the magnetorheological fluid shearing mode cannot drive the magnetorheological fluid in the cavity to rotate under the condition of no current excitation. When the clutch is disengaged, certain resistance is generated to the rotation of the driving shaft, the requirement that the passive torque is small enough cannot be realized, the relationship between the external dimension and the required output torque cannot be coordinated, and the requirement of the required large output torque cannot be achieved under the requirement of small dimension.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a small-size large-controllable-range magnetorheological clutch so as to achieve the purpose of small enough passive torque when no current is excited.
The invention is realized by the following technical scheme:
a small-size large-controllable-range magneto-rheological clutch comprises an outer shell, a driving mechanism and a driven mechanism which are arranged in the outer shell,
the driving mechanism comprises an input shaft, input disks and a permanent magnet, the bottom end of the input shaft extends into the outer shell and is fixedly sleeved with at least one input disk, and the permanent magnet is arranged between the input disks and the input shaft;
the driven mechanism comprises an output shaft, an output disc and a connecting cylinder, the output shaft and the input shaft are coaxially arranged, the output disc comprises at least two output discs which are arranged up and down, the top end of the output shaft extends into the outer shell, the output disc at the bottom end is fixedly sleeved at the top end of the output shaft, the outer edges of the output discs are connected into a whole through a connecting cylinder, a closed annular liquid storage cavity is formed between the output disc at the top end and the output disc at the bottom end, magnetorheological fluid is filled in the annular liquid storage cavity, each input disc and each output disc positioned in the middle are positioned in the annular liquid storage cavity, an annular accommodating cavity is formed between every two adjacent output discs, each input disc is positioned in the corresponding annular accommodating cavity, and a gap is reserved between each input disc and the corresponding upper output disc and between each input disc and the corresponding lower output disc; an inner liquid storage cavity is arranged in the input disc, and a communication channel for communicating the inner liquid storage cavity with the corresponding annular accommodating cavity is formed in the input disc;
the magnetic field generated by the permanent magnet adsorbs the magnetorheological fluid in the annular liquid storage cavity into the inner liquid storage cavity of the input disc; the excitation magnetic field is generated after the current is introduced through the excitation coil, the magnetic field generated by the permanent magnet is overcome, the adsorbed magnetorheological fluid enters the annular liquid storage cavity from the inner liquid storage cavity, the state of the magnetorheological fluid is changed by adjusting the input current of the excitation coil, and then the transmission torque of the magnetorheological clutch is adjusted.
Furthermore, the input disc comprises a disc body and at least two fan-shaped ring plates which are uniformly distributed along the circumferential direction of the disc body, a gap is reserved between every two adjacent fan-shaped ring plates, the fan-shaped ring plates and the disc body are arranged in the same circle center, and the input disc is fixedly sleeved on the permanent magnet through a center hole of the disc body.
Furthermore, in the input disc, the thickness of the disc body is greater than that of the fan ring plate, the inner liquid storage cavity is arranged inside the disc body, the upper end face and the lower end face of the disc body are respectively contacted with the upper output disc and the lower output disc, and a gap is reserved between the upper end face and the lower end face of the fan ring plate and the upper output disc and between the upper end face and the lower output disc.
Furthermore, the input shaft and the topmost output disc are sealed through a sealing ring, and the sealing ring is sleeved in a corresponding mounting groove on the input shaft.
Furthermore, a liquid inlet hole and an exhaust hole are formed in the topmost output disc, and the liquid inlet hole and the exhaust hole are sealed through sealing plugs respectively.
Furthermore, still be equipped with the copper sheathing in the shell body, excitation coil twines outside the copper sheathing and compresses tightly in the shell body inside wall.
Further, the shell body comprises an outer cylinder body and an end cover, the top end of the outer cylinder body is opened, and the end cover is in threaded connection with the top end of the outer cylinder body.
Furthermore, the input shaft, the input disc, the output shaft and the connecting cylinder are made of non-magnetic or low-magnetic materials.
Furthermore, the output disc and the outer shell are made of high-permeability materials.
Compared with the prior art, the invention has the following advantages:
1. according to the small-size large-controllable-range magnetorheological clutch provided by the invention, due to the addition of the permanent magnet, the permanent magnet is matched with related parts, and under the condition that the excitation coil is not excited by current, the permanent magnet generates a constant magnetic field to adsorb magnetorheological fluid in the annular liquid storage cavity into the inner liquid storage cavity of the input disc, so that the contact between the magnetorheological fluid and the input disc is reduced to the maximum extent, the rotation resistance of the input shaft is reduced, and the passive torque of the input shaft end is effectively reduced.
2. The input disc of the small-size large-controllable-range magnetorheological clutch comprises a disc body and at least two fan-ring plates which are uniformly distributed along the circumferential direction of the disc body, and the structural design ensures that the clutch comprehensively utilizes two working modes, namely a shearing mode and a flow mode of the magnetorheological fluid, has the advantages of quick response and continuously adjustable torque, effectively realizes a large controllable range (comprising a torque range and a dynamic controllable range) under the condition of small size, effectively improves the response speed, improves the effective utilization rate of the magnetorheological fluid, and realizes the coordination and matching of the miniaturization of the clutch structure and the requirement of large output torque.
3. The thickness of the disc body of the small-size large-controllable-range magneto-rheological clutch is larger than that of the fan ring plate, so that magneto-rheological fluid is positioned between the fan ring plate and the output disc, the disc body is made of non-magnetic conductive materials, and the fan ring plate is made of high-magnetic conductive materials, so that a magnetic field generated by an excitation coil penetrates through the magneto-rheological fluid at the fan ring plate as much as possible to increase the magnetic field intensity at the position, the output torque generated by the fan ring plate area is enhanced to the utmost extent, and the loss of the output torque of the disc body with the small radial size is effectively compensated.
4. According to the small-size large-controllable-range magnetorheological clutch provided by the invention, the thickness of the disc body is larger than that of the fan ring plate, so that the magnetorheological fluid only needs to be filled between the fan ring plate and the output disc, and compared with the traditional disc type magnetorheological clutch, the use amount of the magnetorheological fluid is effectively reduced, so that the cost is reduced, and the practicability is enhanced.
5. According to the small-size large-controllable-range magnetorheological clutch, due to the structural design, if the driven mechanism is fixedly clamped, the function conversion of the clutch and the brake is realized, and the multifunctional application of the structural design is realized.
6. According to the small-size large-controllable-range magnetorheological clutch, the magnet exciting coil is arranged outside the driving mechanism and the driven mechanism, the unfavorable result that the magnet exciting coil synchronously rotates when the clutch works is effectively avoided, and the purposes of simplified structure and simplicity in assembly are achieved.
Drawings
Fig. 1 is a schematic structural diagram of one embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the input disc of the present invention including two fan ring plates.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a schematic structural diagram of the input disc of the present invention including three fan ring plates.
Fig. 5 is a schematic structural diagram of another embodiment of the present invention.
Reference numbers in the figures: the magnetic fluid magnetorheological fluid drive device comprises an input shaft 1, an end cover 2, an exhaust hole 3, an excitation magnetic line 4, a copper sleeve 5, an excitation coil 6, an outer cylinder body 7, an input disc 8, a disc body 8a, a sector ring plate 8b, a liquid storage cavity 8c, a communicating channel 8d, a permanent magnet 9, an output shaft 10, magnetorheological fluid 11, a first output disc 12, a second output disc 13, a connecting cylinder 14, a liquid inlet hole 15, a sealing ring 16, a third output disc 17, a fourth output disc 18 and a fifth output disc 19.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Referring to fig. 1 to 5, the embodiment discloses a small-sized large-controllable-range magnetorheological clutch, which includes an outer housing, and a driving mechanism and a driven mechanism disposed in the outer housing. The shell body comprises an outer cylinder body 7 and an end cover 2, the top end of the outer cylinder body 7 is opened, and the end cover 2 is in threaded connection with the top end of the outer cylinder body 7.
The driving mechanism comprises an input shaft 1, an input disc 8 and a permanent magnet 9, the bottom end of the input shaft 1 extends into the outer shell and is fixedly sleeved with at least one input disc 8, and the permanent magnet 9 is arranged between the input disc 8 and the input shaft 1;
driven mechanism includes output shaft 10, output disc and connection drum 14, output shaft 10 and the coaxial setting of input shaft 1, output disc includes two at least output discs of arranging from top to bottom, the top of output shaft 10 stretches into in the shell, the fixed suit of the output disc of bottom is on the top of output shaft 10, the outer fringe of each output disc links as an organic whole through connecting drum 14, form a inclosed annular stock solution chamber between the output disc of top and the output disc of bottom, the annular stock solution intracavity is filled with magnetorheological suspensions 11. The input shaft 1 and the topmost output disc are sealed through a sealing ring 16, and the sealing ring 16 is sleeved in a corresponding mounting groove on the input shaft 1. Be equipped with feed liquor hole 15 and exhaust hole 3 on the output disc of top, feed liquor hole 15 and exhaust hole 3 seal through the sealing plug respectively, irritate magnetorheological suspensions 11 through feed liquor hole 15 to annular stock solution intracavity, irritate liquid and accomplish the back and respectively with feed liquor hole 15 and exhaust hole 3 seal plug to realize the sealed of annular stock solution chamber. The input discs 8 and the output discs positioned in the middle are both positioned in the annular liquid storage cavities, an annular accommodating cavity is formed between every two adjacent output discs, each input disc 8 is positioned in the corresponding annular accommodating cavity, and a gap is reserved between each input disc 8 and the corresponding upper output disc and the corresponding lower output disc; an inner liquid storage cavity 8c is arranged inside the input disc 8, and a communication channel 8d used for communicating the inner liquid storage cavity 8c with the corresponding annular accommodating cavity is formed in the input disc 8.
Still be equipped with copper sheathing 5 and excitation coil 6 in the shell body, excitation coil 6 twines outside copper sheathing 5 and compresses tightly in the shell body inside wall, and excitation coil 6 surrounds outside connecting cylinder 14. The magnetorheological fluid 11 in the annular liquid storage cavity is absorbed into the inner liquid storage cavity 8c of the input disc 8 through a magnetic field generated by the permanent magnet 9; an exciting magnetic field is generated after current is introduced through the exciting coil 6, after the magnetic field generated by the permanent magnet 9 is overcome, the adsorbed magnetorheological fluid 11 enters the annular liquid storage cavity from the inner liquid storage cavity 8c, the state of the magnetorheological fluid 11 is changed by adjusting the input current of the exciting coil 6, and then the transmission torque of the magnetorheological clutch is adjusted.
Specifically, the input disc 8 includes a disc body 8a and at least two ring plates 8b uniformly distributed along the circumferential direction of the disc body 8a, a gap is left between two adjacent ring plates 8b, the ring plates 8b and the disc body 8a are arranged concentrically, and the input disc 8 is fixedly sleeved on the permanent magnet 9 through a central hole of the disc body 8 a.
In the input disc 8, the thickness of the disc body 8a is larger than that of the sector plate 8b, the inner liquid storage cavity 8c is arranged inside the disc body 8a, the upper end face and the lower end face of the disc body 8a are respectively contacted with the corresponding upper output disc and the lower output disc, and a gap is reserved between the upper end face and the lower end face of the sector plate 8b and the corresponding upper output disc and the corresponding lower output disc. The thickness of the fan-shaped ring plate 8b is designed to be smaller than that of the disc body 8a, the purpose is to enable the magnetorheological fluid 11 to be filled between the fan-shaped ring plate 8b and the output disc only, so that the magnetic field generated by the excitation coil 6 penetrates through the magnetorheological fluid 11 at the fan-shaped ring plate 8b as much as possible to enhance the magnetic field strength, the fan-shaped ring plate 8b has larger radial size relative to the disc body 8a, the magnetic field strength at the position is enhanced, the output torque of the fan-shaped ring plate 8b area can be enhanced to the utmost extent, meanwhile, the loss of the output torque of the disc body 8a with small radial size is effectively compensated, the structural design changes the magnetic field distribution at the disc body 8a and the fan-shaped ring plate 8b, and the requirement of large output torque under the miniaturization of.
Specifically, the input shaft 1, the input disc 8, the output shaft 10 and the connecting cylinder 14 are made of non-magnetic or low-magnetic materials, and the output disc and the outer shell are made of high-magnetic materials.
Fig. 1 shows a clutch comprising an input disc 8, which correspondingly comprises two output discs, namely a first output disc 12 and a second output disc 13 from top to bottom. Fig. 5 shows a clutch comprising two input discs 8, which correspondingly comprise three output discs from the top, a third output disc 17, a fourth output disc 18 and a fifth output disc 19.
The operation of the clutch is described below, taking the clutch of fig. 1 as an example:
firstly, magnetorheological fluid 11 is poured into the annular liquid storage cavity from the liquid inlet hole 15, the liquid inlet hole 15 and the exhaust hole 3 are respectively sealed and blocked by the sealing plugs after the liquid pouring is finished, and the magnetorheological fluid 11 is used as a transmission medium and is filled in a gap between the input disc 8 and the first output disc 12 and the second output disc 13. The input shaft 1 receives the upper torque to drive the input disc 8 to rotate in the annular liquid storage cavity filled with the magnetorheological fluid 11, the annular liquid storage cavity is movably sealed through the sealing ring 16 on the input shaft 1 in the rotating process, and the magnetorheological fluid 11 is prevented from leaking from a gap between the input shaft 1 and the topmost output disc when the input shaft 1 rotates. Applying current to the excitation coil 6 to generate an excitation magnetic field, overcoming the magnetic field of the permanent magnet 9, adsorbing the magnetorheological fluid 11 from the inner fluid storage cavity 8c of the input disc 8 into the annular fluid storage cavity, enabling the excitation magnetic lines 4 of the excitation magnetic field to vertically penetrate through the magnetorheological fluid 11 to change the viscosity and the yield stress of the magnetorheological fluid 11, enabling the magnetorheological fluid 11 to be changed into a solid state, and at the moment, enabling the magnetorheological fluid 11 to be in a shearing working mode, transmitting power and moving to the first output disc 12 and the second output disc 13 through the shearing stress, and further driving the output shaft 10 to rotate; if the output shaft 10 is fixed, the magnetorheological clutch is converted into a magnetorheological brake, and the braking torque is generated through the shear stress of the magnetorheological fluid 11. In the process, because the input disc 8 is designed into the disc body 8a and the at least two fan-ring plates 8B uniformly distributed along the circumferential direction of the disc body 8a in the embodiment, with such a structural design, when the input disc 8 rotates, except that the magnetorheological fluid 11 on the upper and lower surfaces of the input disc 8 is in the shearing working mode, the magnetorheological fluid 11 in the region between two adjacent fan-ring plates 8B is in the flowing working mode under the pushing action of the side walls of the two fan-ring plates 8B, because the magnetorheological fluid 11 in the region between the two adjacent fan-ring plates 8B generates a pressure difference on the incident flow surface a and the back flow surface B, the magnetorheological fluid 11 in the region is in the flowing working mode under the action of the pressure difference, and power and motion are transmitted to the output shaft 10 through the flowing mode. Namely, the embodiment can realize the cooperative work of the flowing working mode and the shearing working mode of the magnetorheological fluid 11; the viscosity control of the magnetorheological fluid 11 can be realized by adjusting the excitation current of the excitation coil 6, so that the transmission torque characteristic of the magnetorheological clutch is changed, the transmission torque between the input shaft 1 and the output shaft 10 is adjusted, and the large-torque-range transmission is realized efficiently; if the output shaft 10 is fixed, the magnetorheological clutch is changed into a magnetorheological brake, and the brake torque is generated through the flowing working mode of the magnetorheological fluid 11.
When the excitation coil 6 is excited by no current, the permanent magnet 9 can provide a constant magnetic field, and the adsorbed magnetorheological fluid 11 enters the inner fluid storage cavity 8c of the input disc 8 from the annular fluid storage cavity, so that the input end resistance moment is reduced when no current is excited, and the input shaft 1 idles and reduces the passive torque.
The number of the fan-shaped ring plates 8b of the input disc 8 can be increased according to the torque requirement, so that the total contact area between the side walls of the fan-shaped ring plates 8b and the magnetorheological fluid 11 is increased, the effective interval of the flowing working mode of the magnetorheological fluid 11 is further increased, and the controllable range is improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a big controllable scope magnetic current becomes clutch of small-size, includes the shell body and sets up driving mechanism, the follower in the shell body, its characterized in that:
the driving mechanism comprises an input shaft, input disks and a permanent magnet, the bottom end of the input shaft extends into the outer shell and is fixedly sleeved with at least one input disk, and the permanent magnet is arranged between the input disks and the input shaft;
the driven mechanism comprises an output shaft, an output disc and a connecting cylinder, the output shaft and the input shaft are coaxially arranged, the output disc comprises at least two output discs which are arranged up and down, the top end of the output shaft extends into the outer shell, the output disc at the bottom end is fixedly sleeved at the top end of the output shaft, the outer edges of the output discs are connected into a whole through a connecting cylinder, a closed annular liquid storage cavity is formed between the output disc at the top end and the output disc at the bottom end, magnetorheological fluid is filled in the annular liquid storage cavity, each input disc and each output disc positioned in the middle are positioned in the annular liquid storage cavity, an annular accommodating cavity is formed between every two adjacent output discs, each input disc is positioned in the corresponding annular accommodating cavity, and a gap is reserved between each input disc and the corresponding upper output disc and between each input disc and the corresponding lower output disc; an inner liquid storage cavity is arranged in the input disc, and a communication channel for communicating the inner liquid storage cavity with the corresponding annular accommodating cavity is formed in the input disc;
the magnetic field generated by the permanent magnet adsorbs the magnetorheological fluid in the annular liquid storage cavity into the inner liquid storage cavity of the input disc; the excitation magnetic field is generated after the current is introduced through the excitation coil, the magnetic field generated by the permanent magnet is overcome, the adsorbed magnetorheological fluid enters the annular liquid storage cavity from the inner liquid storage cavity, the state of the magnetorheological fluid is changed by adjusting the input current of the excitation coil, and then the transmission torque of the magnetorheological clutch is adjusted.
2. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: the input disc comprises a disc body and at least two fan-shaped ring plates which are uniformly distributed along the circumferential direction of the disc body, a gap is reserved between every two adjacent fan-shaped ring plates, the fan-shaped ring plates and the disc body are arranged in the same circle center, and the input disc is fixedly sleeved on the permanent magnet through a center hole of the disc body.
3. The small-size large-controllable-range magnetorheological clutch according to claim 2, wherein: in the input disc, the thickness of the disc body is larger than that of the fan ring plate, the inner liquid storage cavity is arranged inside the disc body, the upper end face and the lower end face of the disc body are respectively contacted with the upper output disc and the lower output disc, and gaps are reserved between the upper end face and the lower end face of the fan ring plate and the upper output disc and the lower output disc.
4. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: the input shaft and the topmost output disc are sealed through a sealing ring, and the sealing ring is sleeved in a corresponding mounting groove on the input shaft.
5. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: and a liquid inlet hole and an exhaust hole are formed in the topmost output disc and are respectively sealed through sealing plugs.
6. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: still be equipped with the copper sheathing in the shell body, excitation coil twines outside the copper sheathing and compresses tightly in the shell body inside wall.
7. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: the shell body comprises an outer cylinder body and an end cover, the top end of the outer cylinder body is open, and the end cover is in threaded connection with the top end of the outer cylinder body.
8. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: the input shaft, the input disc, the output shaft and the connecting cylinder are all made of non-magnetic or low-magnetic materials.
9. The small-size large-controllable-range magnetorheological clutch according to claim 1, wherein: the output disc and the outer shell are made of high-permeability materials.
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| CN201811166532.7A CN109027046B (en) | 2018-10-08 | 2018-10-08 | Small-size large-controllable-range magnetorheological clutch |
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| CN109027046B true CN109027046B (en) | 2020-06-05 |
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| CN112240359B (en) * | 2019-07-19 | 2022-10-04 | 广东美的白色家电技术创新中心有限公司 | Clutch device and electrical equipment |
| CN111416503A (en) * | 2019-12-24 | 2020-07-14 | 熵零技术逻辑工程院集团股份有限公司 | Transmission mechanism and power system applying same |
| US11603891B2 (en) * | 2020-11-13 | 2023-03-14 | Ho Chi Minh City University Of Technology (Hutech) | Bidirectional magneto-rheological actuator |
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| CN202851743U (en) * | 2012-08-01 | 2013-04-03 | 林智勇 | Magnetofluid drum brake |
| CN203098636U (en) * | 2012-12-12 | 2013-07-31 | 长安大学 | Magneto-rheological clutch |
| CN205479022U (en) * | 2016-03-27 | 2016-08-17 | 兰州交通大学 | Novel polydisc formula magneto -rheological fluid brake |
| CN107605995A (en) * | 2017-09-29 | 2018-01-19 | 福州大学 | A kind of magneto-rheologic liquid brake and its method of work |
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| CN109027046A (en) | 2018-12-18 |
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