CN108506367B - Flexible controllable clutch - Google Patents
Flexible controllable clutch Download PDFInfo
- Publication number
- CN108506367B CN108506367B CN201810325461.4A CN201810325461A CN108506367B CN 108506367 B CN108506367 B CN 108506367B CN 201810325461 A CN201810325461 A CN 201810325461A CN 108506367 B CN108506367 B CN 108506367B
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- Prior art keywords
- sleeve
- cylindrical surface
- blade
- passive
- wedge
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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
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
A flexible controllable clutch is provided with: initiative cover and passive cover, characterized by: the passive sleeve is sleeved on the active sleeve, blades capable of moving radially and blade moving grooves are formed in the outer cylindrical surface of the active sleeve, blade return springs are arranged in the blade moving grooves, the inner cylindrical surface of the passive sleeve is in an elliptic cylindrical shape, two end faces of a short shaft of the elliptic cylindrical surface of the passive sleeve are movably connected with the outer cylindrical surface of the active sleeve, so that a closed wedge-shaped cavity is formed by the upper side and the lower side of a contact point of the elliptic cylindrical surface of the passive sleeve and the outer cylindrical surface of the active sleeve, the wedge-shaped cavities on the upper side and the lower side of the contact point are communicated through oil drainage grooves formed in the passive sleeve, and magnetic (electro) rheological. The clutch has the advantages of small volume, large bearing capacity, strong impact resistance, controllable meshing flexibility, high transmission efficiency and simple structure, and avoids the limitation of the design and application range of a mechanical device related to the traditional clutch due to the large volume.
Description
Technical Field
The invention relates to a flexible controllable clutch, belongs to the technical field of mechanical transmission, and particularly relates to a flexible combined clutch.
Background
At present, friction plate clutches are mostly used in traditional clutches with large bearing capacity, and because the friction plate clutches are large in size, the design and application range of mechanical devices related to the friction plate clutches are greatly limited, for example: the parallel shaft type AT transmission of Honda company can only achieve six gears due to the large size of the clutch, and more gears such as eight AT can not be designed and applied because the size is unacceptable. In addition, friction plate clutches are hard to engage, and can cause impact on transmission components, such as: when the gear box is applied to an automobile transmission, the gear box can generate a pause feeling, so that the comfort of the automobile is reduced.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, the present invention provides a flexible controllable clutch.
The technical scheme adopted by the invention for solving the technical problems is as follows: a flexible controllable clutch is provided with: the driving sleeve 2 and the driven sleeve 3 are characterized in that: the driven sleeve 3 is sleeved on the driving sleeve 2, blades 10 capable of moving in the radial direction and blade moving grooves 14 are arranged on the outer cylindrical surface of the driving sleeve 2, blade return springs 11 are arranged in the blade moving grooves 14, and the inner end surfaces 22 of the two axial end surfaces of the driven sleeve 3 are movably connected with the outer end surfaces of the two axial ends of the blades 10 and the blade moving grooves 14; the inner cylindrical surface of the driven sleeve 3 is an elliptic cylinder, two end surfaces of a short shaft of the elliptic cylindrical surface of the driven sleeve 3 are movably connected with the outer cylindrical surface of the driving sleeve 2, so that the upper side and the lower side of a contact of the elliptic cylindrical surface of the driven sleeve 3 and the outer cylindrical surface of the driving sleeve 2 form a closed wedge-shaped cavity 21, the wedge-shaped cavities 21 on the upper side and the lower side of the contact are communicated through an oil drainage groove 13 arranged on the driven sleeve 3, magnetorheological fluid or electrorheological fluid is filled in the wedge-shaped cavity 21, an electromagnet fixing groove 18 and an electromagnet 8 are arranged on the outer cylindrical surface of the driving sleeve 2, and a sealing ring 12 and a ball or a roller which plays a role in reducing friction resistance are.
On the vane 10, a radial vane oil guide groove 20 is arranged between the contact surfaces of the vane 10 and the vane movable groove 14, and the vane oil guide groove is used for communicating adjacent wedge-shaped cavities when the clutch is separated in a state so as to reduce the rotation and retraction resistance of the vane.
In order to further reduce the resistance of the magnetorheological fluid or the electrorheological fluid to the blades in the separation state of the clutch, the blades 10 are provided with circumferential oil drainage holes 24 to communicate with wedge-shaped cavities adjacent to the blades.
When the electromagnet of the clutch is not electrified, the magnetorheological fluid or the electrorheological fluid is in a liquid state, the wedge-shaped cavities are in a communicated state due to the communication effect of the oil drainage groove and the blade oil guide groove, when the driving sleeve drives the blades to rotate, the magnetorheological fluid or the electrorheological fluid in the wedge-shaped cavities flows into the adjacent wedge-shaped cavities through the oil drainage groove, the blade oil guide groove and the oil drainage hole, and the clutch is in a separated state; when the electromagnet of the clutch is electrified, the magnetorheological fluid or the electrorheological fluid becomes semi-solid or solid, the magnetorheological fluid or the electrorheological fluid in the oil drain groove blocks the oil drain groove, the blade oil guide groove and the oil drain hole, the magnetorheological fluid or the electrorheological fluid in the wedge-shaped cavity of the quadrant II and IV forms a solid or semi-solid wedge, the magnetorheological fluid or the electrorheological fluid in the quadrant II and IV forms high-pressure pushing action on the blades because the volume of the quadrant II and IV gradually decreases, while the magnetorheological fluid or the electrorheological fluid in the quadrant II and IV forms low-pressure sucking action on the blades because the volume of the quadrant I and III gradually increases, in addition, the magnetorheological fluid or the electrorheological fluid in the blade oil guide groove blocks the blade oil guide groove, the retraction of the blades is blocked, the friction force between the blades and the elliptic cylindrical surface of the driven sleeve is increased, and the high-pressure pushing action in the quadrant II and IV, the friction force between the blade I and IV is increased, The active sleeve and the passive sleeve are combined into a whole under the combined action of low-pressure drag of the quadrant III area, the friction force of the elliptic cylindrical surfaces of the blades and the passive sleeve and the shearing resistance of the magnetorheological fluid or the electrorheological fluid, so that the clutch is in a meshing state. The hardness of a solid wedge formed by the magnetorheological fluid or the electrorheological fluid can be adjusted by adjusting the current of the electromagnet during electrification, so that flexible meshing with controllable flexibility of the clutch is realized. The semi-linkage of the clutch can be realized by adjusting the current of the electromagnet when the electromagnet is electrified to ensure that the magnetorheological fluid or the electrorheological fluid in the wedge-shaped cavity keeps proper fluidity.
The clutch has the advantages that the clutch is small in size, large in bearing capacity, strong in impact resistance, high in transmission efficiency and simple in structure, and the problem that the design and application range of a mechanical device related to the traditional clutch is limited due to the large size is avoided; the clutch is engaged by means of magneto-rheological fluid or electro-rheological fluid to form a wedge to make the clutch self-lock, so that the defects of high heat and abrasion generated when the traditional friction clutch is engaged are overcome. In addition, when the clutch is engaged, flexible engagement and semi-linkage with controllable clutch flexibility are realized by adjusting the strength of a magnetic field or current.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is an isometric view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is an exploded view of the present invention.
FIG. 4 is a schematic view of the addition of rollers to the tip of the blade of the present invention.
FIG. 5 is a sectional view of the oil drainage hole in the vane of the present invention.
FIG. 6 is a perspective view of the oil drainage holes in the vanes of this invention.
In the figure, 1, a flexible controllable clutch, 2, a driving sleeve, 3, a driven sleeve, 4, a ball, 5, a driven sleeve assembly fixing screw, 6, an electromagnet lead, 7, an electromagnet fixing screw, 8, an electromagnet, 9, an electromagnet coil, 10, a blade, 11, a blade return spring, 12, a sealing ring, 13, an oil drainage groove, 14, a blade movable groove, 15, magnetorheological fluid or electrorheological fluid, 16, a driven sleeve assembly A, 17, a driven sleeve assembly B, 18, an electromagnet fixing groove, 19, a blade movable groove, 20, a blade oil guide groove, 21, a wedge-shaped cavity, 22, a driven sleeve axial end face, 23, a blade top end roller and 24 oil drainage holes are arranged.
Detailed Description
Embodiments of the present invention will be further described below with reference to the drawings.
As shown in fig. 1 to 3, a flexible controllable clutch includes: initiative cover (2) and passive cover (3), characterized by: the driven sleeve (3) is sleeved on the driving sleeve 2, blades 10 and blade moving grooves 14 capable of moving in the radial direction are arranged on the outer cylindrical surface of the driving sleeve 2, blade return springs 11 are arranged in the blade moving grooves 14, and the inner end surfaces 22 of the two axial end surfaces of the driven sleeve 3 are movably connected with the outer end surfaces of the two axial end surfaces of the blades 10 and the blade moving grooves 14; the inner cylindrical surface of the driven sleeve 3 is an elliptic cylinder, two end surfaces of a short shaft of the elliptic cylindrical surface of the driven sleeve 3 are movably connected with the outer cylindrical surface of the driving sleeve 2, so that the upper side and the lower side of a contact of the elliptic cylindrical surface of the driven sleeve 3 and the outer cylindrical surface of the driving sleeve 2 form a closed wedge-shaped cavity 21, the wedge-shaped cavities 21 on the upper side and the lower side of the contact are communicated through an oil drainage groove 13 arranged on the driven sleeve 3, magnetorheological fluid or electrorheological fluid is filled in the wedge-shaped cavity 21, an electromagnet fixing groove 18 and an electromagnet 8 are arranged on the outer cylindrical surface of the driving sleeve 2, and a sealing ring 12 and a ball or a roller which plays a role in reducing friction resistance are.
On the vane 10, a radial vane oil guide groove 20 is arranged between the contact surfaces of the vane 10 and the vane movable groove 14, and the vane oil guide groove is used for communicating adjacent wedge-shaped cavities when the clutch is separated in a state so as to reduce the rotation and retraction resistance of the vane.
At least one group of blades 10 and blade moving grooves 14 are arranged on the outer cylindrical surface of the driving sleeve 2.
In order to reduce the frictional resistance between the vane 10 and the inner cylindrical surface of the driven sleeve 3 in the clutch disengaged state, a roller, a ball, an oil groove, or the like, preferably a roller (see fig. 4), is provided at the tip end of the vane 10.
As shown in fig. 5 and 6, the blade 10 is provided with a circumferential oil drain hole 24 to communicate with the wedge-shaped cavity adjacent to the blade, so as to further reduce the resistance of the magnetorheological fluid or the electrorheological fluid to the blade when the clutch is in a separated state.
The cross section of the oil drainage groove 13 is in a grid shape, a circle, a square, an ellipse or a combination of the former shapes, preferably in a grid shape, because the grid shape can successfully allow the magnetorheological fluid or the electrorheological fluid to pass through when the magnetorheological fluid or the electrorheological fluid is in a liquid state, and can form enough resistance to prevent the magnetorheological fluid or the electrorheological fluid from passing through when the magnetorheological fluid or the electrorheological fluid is in a solid state or a semi-solid state.
Finally, the following description is provided: the above embodiments are only for illustrating the technical solutions of the present invention and are not limited, the implementation mechanisms listed in the patent are all typical examples, the specific facility mechanism types are not all listed here, and the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered in the claims of the present invention.
Claims (5)
1. A flexible controllable clutch is provided with: initiative cover (2) and passive cover (3), characterized by: the driven sleeve (3) is sleeved on the driving sleeve (2), blades (10) capable of moving in the radial direction and blade moving grooves (14) are arranged on the outer cylindrical surface of the driving sleeve (2), blade return springs (11) are arranged in the blade moving grooves (14), and inner end surfaces (22) of two axial end surfaces of the driven sleeve (3) are movably connected with the blades (10) and the outer end surfaces of two axial end surfaces of the blade moving grooves (14); the inner cylindrical surface of the passive sleeve (3) is in an elliptic cylinder shape, two end surfaces of a short shaft of the elliptic cylindrical surface of the passive sleeve (3) are movably connected with the outer cylindrical surface of the active sleeve (2), so that the elliptic cylindrical surface of the passive sleeve (3) and the upper and lower sides of a contact of the outer cylindrical surface of the active sleeve (2) form a closed wedge-shaped cavity (21), the wedge-shaped cavities (21) on the upper and lower sides of the contact are communicated by an oil drainage groove (13) arranged on the passive sleeve (3), and magnetorheological fluid or electrorheological fluid is filled in the wedge-shaped cavity (21); the wedge-shaped cavity (21) between the driven sleeve (3) and the driving sleeve (2) is divided into left and right adjacent wedge-shaped cavities by the blades (10) on the driving sleeve (2); an electromagnet fixing groove (18) and an electromagnet (8) are arranged on the outer cylindrical surface of the driving sleeve (2), and a sealing ring (12) and a ball or a roller are arranged between the driving sleeve (2) and the driven sleeve (3).
2. The flexible controllable clutch according to claim 1, wherein: a radial blade oil guide groove (20) is arranged on the blade (10) between the contact surfaces of the blade (10) and the blade movable groove (14).
3. The flexibly controllable clutch according to claim 1 or 2, wherein: the cross section of the oil drainage groove (13) is in a grid shape.
4. The flexibly controllable clutch according to claim 1 or 2, wherein: at least one group of blades (10) and blade movable grooves (14) are arranged on the outer cylindrical surface of the driving sleeve (2).
5. The flexibly controllable clutch according to claim 1 or 2, wherein: the blade (10) is provided with a circumferential oil drain hole (24) to communicate with the wedge-shaped cavity adjacent to the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325461.4A CN108506367B (en) | 2018-04-11 | 2018-04-11 | Flexible controllable clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325461.4A CN108506367B (en) | 2018-04-11 | 2018-04-11 | Flexible controllable clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506367A CN108506367A (en) | 2018-09-07 |
| CN108506367B true CN108506367B (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810325461.4A Active CN108506367B (en) | 2018-04-11 | 2018-04-11 | Flexible controllable clutch |
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| Country | Link |
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| CN (1) | CN108506367B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445298B (en) * | 2019-08-23 | 2020-12-22 | 浙江欧托电气有限公司 | Motor for centrifugal protection electromagnetic adsorption type electro-rheological glass lifter |
| CN110788647B (en) * | 2019-11-24 | 2021-07-06 | 佛山市航皓五金机电有限公司 | Clamp capable of adjusting clamping degree and clamping hardware in various shapes |
| CN111483936B (en) * | 2020-04-17 | 2021-07-09 | 江苏玖柒环境建设工程有限公司 | Utilize architectural rolling equipment stall self-lock device of electrorheological fluids principle |
| CN113531081B (en) * | 2021-06-29 | 2022-12-23 | 南京工诺科技有限公司 | Hydraulic coupler based on magnetorheological fluid |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210509C (en) * | 2001-12-13 | 2005-07-13 | 中国科学技术大学 | Centrifugal magnetofluid clutch |
| CN201125867Y (en) * | 2007-11-23 | 2008-10-01 | 浙江凯吉汽车零部件制造有限公司 | Rotary vane type automobile air conditioner compressor |
| CN202451656U (en) * | 2012-03-06 | 2012-09-26 | 浙江师范大学 | Centrifugal brake shoe extrusion magneto-rheological clutch |
| CN203770471U (en) * | 2014-02-25 | 2014-08-13 | 李智奇 | Overrun clutch of electric curtain |
| DE202014002171U1 (en) * | 2014-03-08 | 2015-06-09 | Intorq Gmbh & Co. Kg | Torque-limiting element |
| CN104019151B (en) * | 2014-06-11 | 2016-08-24 | 浙江师范大学 | Damp type magnetic rheological clutch |
| WO2016187719A1 (en) * | 2015-05-26 | 2016-12-01 | Exonetik Inc. | Dynamic motion control system using magnetorheological fluid clutch apparatuses |
| CN205859077U (en) * | 2016-08-11 | 2017-01-04 | 重庆理工大学 | A kind of marmem is combined self-pressurization actuating device with magnetic flow liquid |
| CN206092747U (en) * | 2016-10-14 | 2017-04-12 | 重庆理工大学 | Spherical centrifugation extrusion magnetic current becomes transmission |
| CN106884898B (en) * | 2017-03-17 | 2018-10-30 | 湘潭大学 | A kind of squash type torque magnetic rheological clutch |
| CN107448505A (en) * | 2017-08-02 | 2017-12-08 | 汤树人 | It is a kind of without control at a high speed triggering and can low speed keep clutch |
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2018
- 2018-04-11 CN CN201810325461.4A patent/CN108506367B/en active Active
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| CN108506367A (en) | 2018-09-07 |
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