CN101581345B - Magnetic adhesive brake - Google Patents
Magnetic adhesive brake Download PDFInfo
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- CN101581345B CN101581345B CN2009101041309A CN200910104130A CN101581345B CN 101581345 B CN101581345 B CN 101581345B CN 2009101041309 A CN2009101041309 A CN 2009101041309A CN 200910104130 A CN200910104130 A CN 200910104130A CN 101581345 B CN101581345 B CN 101581345B
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Abstract
The invention discloses a magnetic adhesive brake which adopts novel material of magnetic adhesive for replacing the magnetic powder in the prior art. The magnetic adhesive is an adhesive material between liquid and solid, can maintain an original shape in a free state, and can be changed into any shape when bearing a shearing force; the magnetic adhesive can be adhered to the chamber wall of a rotor and a stator of the brake and does not prevent the relative free rotation of the rotor and the stator when in normal work; when a coil is electrified, the magnetic adhesive can generate resistancemoment on the rotor like the magnetic powder does, meanwhile, the resistance moment is directly proportional to the current in the coil; the magnetic adhesive has all the advantages of the magnetic p owder brake, has the advantages of stable output torque, low temperature rise, large sliding power, small powder particle abrasion, long service life and the like, does not have the agglomeration problem of the existing magnetic powder brake in the use process, and does not have the problems of precipitation and leakage; in addition, the production and using costs are low, therefore, the magnetic adhesive brake can be widely applied and replace the existing magnetic powder brake.
Description
Technical field
The present invention relates to a kind of break, particularly a kind of magnetic adhesive brake.
Background technique
Magnetic powder brake is that a kind of magnetic with high magnetic conductivity is the work media, with the exciting curent is the new type auto control unit of the superior performance of control device, its working principle is to produce magnetic field after connecting DC electrical source, the working medium magnetic forms the magnetic chain under magnetic line of force effect, the purpose of braking torque is characterized in rapid response, and the linearity is good, control moment is constant, running steadily, and is simple in structure, noise free, easy to maintenance, has fast braking, tension control, positioning control, speed controlling, functions such as microcomputer control, thereby be used widely in every profession and trade, be a kind of multipurpose, the Automatic Control Component of superior performance.In the prior art, the measurement of power that magnetic powder brake also is often used in gearing loads and braking.
Magnetic powder brake comprises stator, rotor, be arranged on the coil in the stator and be arranged on stator and rotor between magnetic.In use because magnetic has remanent magnetism, often lump easily, also firm being adsorbed in the magnetic cavity easily causes the instability of output torque.For avoiding above problem may the damage of tested machine select to use torque motor, but the torque motor price be higher, maintenance and user cost are also very high in the prior art.
For dealing with problems, a kind of magneto-rheological stepless speed changer has appearred, and replace magnetic by magnetic flow liquid, but, cause the decline of output torque because magnetic flow liquid contains Chuck Steak, have the problem that liquid such as precipitation and leakage have simultaneously.
Therefore, need a kind of break, have whole advantages of magnetic powder brake, the problem that not existing magnetic powder brake exists in the using process, and precipitation and leakage problem can not appear, manufacturing cost and use cost is lower.
Summary of the invention
In view of this, purpose of the present invention provides a kind of magnetic adhesive brake, has whole advantages of magnetic powder brake, the problem that not existing magnetic powder brake exists in the using process, and precipitation and leakage problem can not appear, manufacturing cost and use cost is lower.
Magnetic adhesive brake of the present invention, comprise stator, rotor and the coil that is arranged in the stator, magnetic glue is set between described stator and the rotor, described magnetic glue comprises following component: magnetic, gluey fatty acid metal salts and polyolefin oil, described magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy, wherein the weight percentage of carbonyl iron dust in magnetic glue is 39～41%, the weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 13～15%, the weight percentage of gluey fatty acid metal salts in magnetic glue is 14～16%, the weight percentage of polyolefin oil in magnetic glue is 20～22%, gluey fatty acid metal salts is used to disperse as glue shape support and supports the even distribution of magnetic in the space, and polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
Further, also comprise nano whisker in the magnetic glue material, described nano whisker is puted forth effort as the strand that strengthening agent is used to strengthen between the each component;
Further, described nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 8～10%;
Further, in the magnetic glue by weight percentage composition also add 0.5～1.5% silicone oil, described silicone oil is used for protection against the tide, damping and raising heat resistance as additive;
Further, the weight percentage of carbonyl iron dust in magnetic glue is 40%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 14%; The weight percentage of fatty acid metal salts in magnetic glue is 15%; The weight percentage of polyolefin oil in magnetic glue is 21%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 9%; The weight percentage of silicone oil in magnetic glue is 1%.
Beneficial effect of the present invention: magnetic adhesive brake of the present invention, adopt new material magnetic glue to replace the magnetic of prior art, magnetic glue is the colloidal materials between liquid and solid, when free state, can keep original shape, and when bearing shearing force, can change certainly as arbitrary shape, during proper functioning, magnetic glue can stick on the chamber wall of brake rotor and stator, do not stop that rotor is relative with stator to rotate freely, and behind coil electricity, the same resistance torque that on rotor, produces of magnetic glue energy with magnetic, and the electric current in resistance torque and the coil is directly proportional, whole advantages with magnetic powder brake, it is stable to have output torque, temperature rise is low, slip power is big, advantages such as the little and long service life of powder wearing and tearing, the agglomeration problems that existing magnetic powder brake exists in the using process, and precipitation and leakage problem can not appear, manufacturing cost and use cost is lower, can extensive use and alternative existing magnetic powder brake.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Accompanying drawing is a structural representation of the present invention.
Embodiment
Accompanying drawing is a structural representation of the present invention, as shown in the figure: the magnetic adhesive brake of present embodiment, comprise stator 3, end cap 1, rotor 2 and be arranged on the interior coil 4 of stator, described coil is arranged in the coil bore of being made up of stator 3 and overcoat 5, between described stator 3 and the rotor 2 magnetic glue 6 is set, described magnetic glue comprises following component: magnetic, gluey fatty acid metal salts and polyolefin oil, gluey fatty acid metal salts is used to disperse as glue shape support and supports the even distribution of magnetic in the space, and polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
In the present embodiment, also comprise nano whisker in the magnetic glue material, described nano whisker is puted forth effort as the strand that strengthening agent is used to strengthen between the each component, improves transmission and retardation efficiency;
In the present embodiment, also be added with additive in the described magnetic glue, additive is used for protection against the tide and damping, prolongs the working life of magnetic glue;
Below be magnetic glue embodiment:
Embodiment one
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 40%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 14%; The weight percentage of fatty acid metal salts in magnetic glue is 15%; The weight percentage of polyolefin oil in magnetic glue is 21%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 9%; The weight percentage of silicone oil in magnetic glue is 1%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention, but magnetic powder material in the present embodiment and proportioning are applied to magnetic glue output torque of the present invention ripple disable, temperature rise is minimum, working efficiency is the highest; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, the physical property that makes magnetic glue is between liquid and solid, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and stable linear relation is arranged between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent, polyolefin oil proportioning in the present embodiment can guarantee the magnetic non-corrosive and other chemical change takes place, and make the magnetic in the magnetic glue can fully play effect, and stable linear relation is arranged between the electric current.
Present embodiment compares test: be 135r/min with specified output speed in the test, rated output torque is that the retarder of 11Nm is connected with existing magnetic powder brake, progressively increase electric current behind output torque 11Nm, retarder is worked under rated load, behind the 10min that works, output torque is increased to 63Nm suddenly, behind lasting about 3min, fall back to specified 11Nm again, but this moment, retarder owing to overloading about 5.9 times bigger noise appearred; Work on behind the 15min, braking moment is raised to 45Nm again suddenly again, and behind the 3min that works again, strong abnorma1 noise appears in retarder; Take the retarder inspection apart, discovery has a pair of rolling bearing to be burnt out, and takes the magnetic powder brake inspection apart, finds that magnetic takes on a red color, magnetic, magnetic cavity get rusty fully, lump, scab in addition on the magnetic cavity surface, and this is because the physicochemical property of magnetic causes occurring above-mentioned inevitable phenomenon.And after adopting the magnetic glue replacement magnetic of present embodiment, show than test that the moment that magnetic adhesive brake produces is the same with new magnetic through opposing, but continuous operation 20 days, output torque is highly stable, any fluctuation do not occur, take the magnetic adhesive brake inspection apart, magnetic glue does not have the variation of any physicochemical property yet.
Embodiment two
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 41%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 15%; The weight percentage of fatty acid metal salts in magnetic glue is 15.5%; The weight percentage of polyolefin oil in magnetic glue is 20%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 8%; The weight percentage of silicone oil in magnetic glue is 0.5%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, the physical property that makes magnetic glue is between liquid and solid, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and is linear relationship between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
Present embodiment compares test: adopt the break of magnetic identical problem to occur with embodiment one; And after the magnetic glue that adopts present embodiment replaced magnetic, the moment that magnetic adhesive brake produces was with newly magnetic is the same, but continuous operation 20 days, output torque is more stable, takes the magnetic adhesive brake inspection apart, and magnetic glue does not have the variation of any physicochemical property yet.
Embodiment three
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 39%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 13%; The weight percentage of fatty acid metal salts in magnetic glue is 14.5%; The weight percentage of polyolefin oil in magnetic glue is 22%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 10%; The weight percentage of silicone oil in magnetic glue is 1.5%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, make a kind of material of physical property between liquid and solid of magnetic glue, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and is linear relationship between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
Present embodiment compares test: adopt the break of magnetic identical problem to occur with embodiment one; And after the magnetic glue that adopts present embodiment replaced magnetic, the moment that magnetic adhesive brake produces was with newly magnetic is the same, but continuous operation 20 days, output torque is more stable, takes the magnetic adhesive brake inspection apart, and magnetic glue does not have the variation of any physicochemical property yet.
Embodiment four
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 40%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 14%; The weight percentage of fatty acid metal salts in magnetic glue is 15%; The weight percentage of polyolefin oil in magnetic glue is 21%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 10%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention, but magnetic powder material in the present embodiment and proportioning are applied to magnetic glue output torque of the present invention ripple disable, temperature rise is minimum, working efficiency is the highest; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, make a kind of material of physical property between liquid and solid of magnetic glue, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and stable linear relation is arranged between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent, polyolefin oil proportioning in the present embodiment can guarantee the magnetic non-corrosive and other chemical change takes place, and make the magnetic in the magnetic glue can fully play effect, and stable linear relation is arranged between the electric current.
Present embodiment compares test: adopt the break of magnetic identical problem to occur with embodiment one; And after the magnetic glue that adopts present embodiment replaced magnetic, the moment that magnetic adhesive brake produces was with newly magnetic is the same, but continuous operation 20 days, output torque is more stable, takes the magnetic adhesive brake inspection apart, and magnetic glue does not have the variation of any physicochemical property yet.Because present embodiment does not add silicone oil, can reduce the working life of magnetic glue, but still be far longer than the magnetic of prior art working life.
Embodiment five
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 41%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 15%; The weight percentage of fatty acid metal salts in magnetic glue is 16%; The weight percentage of polyolefin oil in magnetic glue is 20%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 8%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, make a kind of material of physical property between liquid and solid of magnetic glue, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and is linear relationship between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
Present embodiment compares test: adopt the break of magnetic identical problem to occur with embodiment one; And after the magnetic glue that adopts present embodiment replaced magnetic, the moment that magnetic adhesive brake produces was with newly magnetic is the same, but continuous operation 20 days, output torque is more stable, takes the magnetic adhesive brake inspection apart, and magnetic glue does not have the variation of any physicochemical property yet.Because present embodiment does not add silicone oil, can reduce the working life of magnetic glue, but still be far longer than the magnetic of prior art working life.
Embodiment six
Magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy in the present embodiment, and wherein the weight percentage of carbonyl iron dust in magnetic glue is 39%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 13%; The weight percentage of fatty acid metal salts in magnetic glue is 16%; The weight percentage of polyolefin oil in magnetic glue is 22%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 10%;
Magnetic can adopt all magnetics that are applied to mechanical transmission and brake field in the prior art, can both realize purpose of the present invention; Gluey fatty acid metal salts can adopt all fatty acid metal salts or the mixture with gluey character, be used to disperse and support the even distribution of magnetic as glue shape support in the space, make a kind of material of physical property between liquid and solid of magnetic glue, proportioning in the present embodiment makes the magnetic in the magnetic glue can fully play effect, and is linear relationship between the electric current; Polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
Present embodiment compares test: adopt the break of magnetic identical problem to occur with embodiment one; And after the magnetic glue that adopts present embodiment replaced magnetic, the moment that magnetic adhesive brake produces was with newly magnetic is the same, but continuous operation 20 days, output torque is more stable, takes the magnetic adhesive brake inspection apart, and magnetic glue does not have the variation of any physicochemical property yet.Because present embodiment does not add silicone oil, can reduce the working life of magnetic glue, but still be far longer than the magnetic of prior art working life.
The experiment proved that, do not add silicone oil and nano whisker in the magnetic glue material and equally have physics and the chemical property more outstanding yet than magnetic, but working life is than not add silicone oil low, transmission stability is more nanocrystalline than not adding need be poor, but working life and transmission stability still are better than the break that only uses magnetic far away, thereby, in the break of the present invention, employing is with magnetic, gluey fatty acid metal salts and polyolefin oil are the magnetic glue material of main body, can substitute the magnetic and the magnetic flow liquid of prior art, effectively guarantee the break braking, transmission stability and working life.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. magnetic adhesive brake, comprise stator, rotor and the coil that is arranged in the stator, it is characterized in that: magnetic glue is set between described stator and the rotor, described magnetic glue comprises following component: magnetic, gluey fatty acid metal salts and polyolefin oil, described magnetic is made up of carbonyl iron dust and nano-crystal soft magnetic alloy, wherein the weight percentage of carbonyl iron dust in magnetic glue is 39～41%, the weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 13～15%, the weight percentage of gluey fatty acid metal salts in magnetic glue is 14～16%, the weight percentage of polyolefin oil in magnetic glue is 20～22%, gluey fatty acid metal salts is used to disperse as glue shape support and supports the even distribution of magnetic in the space, and polyolefin oil is used to form the film of parcel magnetic as dispersing agent.
2. magnetic adhesive brake according to claim 1 is characterized in that: also comprise nano whisker in the magnetic glue material, described nano whisker is puted forth effort as the strand that strengthening agent is used to strengthen between the each component.
3. magnetic adhesive brake according to claim 2 is characterized in that: described nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 8～10%.
4. magnetic adhesive brake according to claim 3 is characterized in that: in the magnetic glue by weight percentage composition also add 0.5～1.5% silicone oil, described silicone oil is used for protection against the tide, damping and raising heat resistance as additive.
5. magnetic adhesive brake according to claim 4 is characterized in that: the weight percentage of carbonyl iron dust in magnetic glue is 40%; The weight percentage of nano-crystal soft magnetic alloy in magnetic glue is 14%; The weight percentage of fatty acid metal salts in magnetic glue is 15%; The weight percentage of polyolefin oil in magnetic glue is 21%; Nano whisker is the mixture of nanometer silicon carbide whisker and zinc oxide nanocrystalline whisker, and the weight percentage in magnetic glue is 9%; The weight percentage of silicone oil in magnetic glue is 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101041309A CN101581345B (en) | 2009-06-18 | 2009-06-18 | Magnetic adhesive brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101041309A CN101581345B (en) | 2009-06-18 | 2009-06-18 | Magnetic adhesive brake |
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| Publication Number | Publication Date |
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| CN101581345A CN101581345A (en) | 2009-11-18 |
| CN101581345B true CN101581345B (en) | 2011-12-07 |
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| CN2009101041309A Expired - Fee Related CN101581345B (en) | 2009-06-18 | 2009-06-18 | Magnetic adhesive brake |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102661244B (en) * | 2012-05-15 | 2014-10-22 | 中国科学院宁波材料技术与工程研究所 | Wind power generator set and magnetic thixotropic flexible braking device of wind power generator set |
| CN113416504A (en) * | 2021-08-13 | 2021-09-21 | 广州市方佳崇医疗科技有限公司 | Medical hot-melt adhesive and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266861A (en) * | 2008-01-04 | 2008-09-17 | 重庆大学 | A magneto-rheological liquid without sediment |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266861A (en) * | 2008-01-04 | 2008-09-17 | 重庆大学 | A magneto-rheological liquid without sediment |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2006-265612A 2006.10.05 |
| JP特开2009-81234A 2009.04.16 |
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