CN112780669A - Roller bearing with monitoring device - Google Patents
Roller bearing with monitoring device Download PDFInfo
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- CN112780669A CN112780669A CN202110152198.5A CN202110152198A CN112780669A CN 112780669 A CN112780669 A CN 112780669A CN 202110152198 A CN202110152198 A CN 202110152198A CN 112780669 A CN112780669 A CN 112780669A
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- ring
- electrode
- roller
- comb
- electrodes
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 230000003247 decreasing effect Effects 0.000 claims abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 244000126211 Hericium coralloides Species 0.000 description 21
- 238000010248 power generation Methods 0.000 description 7
- 230000010354 integration Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Images
Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/361—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with cylindrical rollers
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/62—Selection of substances
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
- F16C2208/32—Polytetrafluorethylene [PTFE]
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/40—Imides, e.g. polyimide [PI], polyetherimide [PEI]
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/60—Polyamides [PA]
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/76—Polyolefins, e.g. polyproylene [PP]
- F16C2208/78—Polyethylene [PE], e.g. ultra-high molecular weight polyethylene [UHMWPE]
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a roller bearing with a monitoring device, and belongs to the technical field of bearing monitoring and new energy. The device comprises an inner ring, an outer ring, rollers and a bracket, wherein the end parts of the inner ring and the outer ring are respectively provided with a rotating plate and a shell, a circuit board and a sensor are arranged on a bottom plate of the shell, an inner wiring column group and an outer wiring column group are arranged on a ring plate of the shell, a left electrode ring and a right electrode ring are arranged on the rotating plate, and the inner wiring column group is in sliding contact with the; electrode groups consisting of comb-shaped left and right electrodes are embedded between the inner layer and the outer layer of the inner ring and the outer ring, and the left and right electrodes consist of comb backs, comb teeth and terminals; the comb teeth of the left and right electrodes are arranged in a crossed manner and are not contacted with each other, and the terminals of the left and right electrodes are respectively pressed with the contacts of the left and right electrode rings; the roller is contacted with the inner and outer rings in a rolling way to generate induced charges with different properties, potential differences are generated between respective electrodes of the inner and outer rings, the roller is alternately contacted and separated with left and right electrodes on the inner and outer rings when rotating, the potential differences are alternately increased and decreased, current flows and power is output after the two electrodes are connected through a load, and electric energy is supplied to the sensor after being processed.
Description
Technical Field
The invention belongs to the technical field of bearing monitoring and new energy, and particularly relates to a roller bearing with a monitoring device.
Background
The bearing is an indispensable standard part in the fields of machine tools, carrying tools, mining machinery, light industrial machinery and the like, and is also one of the most vulnerable parts in a related transmission system, and 30% of faults of the rotating machinery are caused by bearing failure. Therefore, bearing condition monitoring and early failure diagnosis have attracted much attention. On-line monitoring of bearings and transmission systems thereof has become a prerequisite guarantee for reliable operation of relevant equipment in the fields of generators, ships, high-speed rails, aircrafts and the like, and performance indexes to be monitored comprise various aspects such as temperature, vibration, rotating speed, noise and the like. The initial bearing monitoring system is mainly a split externally-hung structure, belongs to non-contact remote indirect measurement, and has a long distance between a sensor and a signal source and a large error. In recent years, different forms of embedded bearing monitoring systems and bearing rotation-based micro power generation devices are proposed in succession, and the problems of system integration, measurement accuracy, autonomous power supply and the like are well solved. Most of the bearings with the self-powered monitoring function proposed at present generate electricity by utilizing an electromagnetic principle and a piezoelectric principle, the electromagnetic generation has the defects of magnetic interference and weak power generation capacity at low speed, and the piezoelectric generation has the defects of relatively large additional space and depolarization caused by overhigh temperature. Obviously, the prior art has great limitation in practical application, and various bearings with self-powered monitoring functions, which are small in size and high in integration level, and are particularly suitable for high-temperature environments, are still urgently needed by various industries.
Disclosure of Invention
The invention provides a roller bearing with a monitoring device, which adopts the following implementation scheme: the roller bearing with the monitoring device mainly comprises an inner ring, an outer ring, a roller, a support, a shell, a rotating plate, a sensor and a circuit board, wherein the inner ring, the outer ring, the shell and the rotating plate are made of nonmetal materials, and the roller and the support are made of metal or nonmetal materials different from those of the inner ring and the outer ring.
The inner edge of the outer ring is provided with an annular raceway, the outer ring is arranged on the inner ring through a bracket and a roller, and the roller is embedded into the raceway of the outer ring; the end part of the outer ring is provided with a shell through a screw, and the end part of the inner ring is provided with a rotating plate through a screw; a bottom plate is arranged at one end of the shell wall of the shell, a ring plate is arranged at the other end of the shell wall of the shell, a circuit board and a sensor are mounted on the bottom plate of the shell, an inner wiring column group and an outer wiring column group are arranged on the ring plate of the shell, the inner wiring column group comprises an inner left wiring column and an inner right wiring column, and the outer wiring column group comprises an outer left wiring column and an outer right wiring column; the rotating plate is provided with a left electrode ring with a left contact and a right electrode ring with a right contact, the inner terminal group is in sliding contact with the left electrode ring and the right electrode ring, the inner left terminal and the inner right terminal respectively abut against the left electrode ring and the right electrode ring, and the sensor and the inner and outer terminal groups are connected with the circuit board through different lead groups.
The roller is a cylindrical roller or a tapered roller, the roller and the bracket are made of the same metal or nonmetal, the inner ring and the outer ring are made of the same nonmetal, and the nonmetal is made of nylon, polytetrafluoroethylene, polyethylene or polyimide and the like; an outer electrode group is embedded between the inner layer and the outer layer of the outer ring, an inner electrode group is embedded between the inner layer and the outer layer of the inner ring, the outer electrode group is composed of a comb-shaped outer left electrode and a comb-shaped outer right electrode, the inner electrode group is composed of a comb-shaped inner left electrode and a comb-shaped inner right electrode, the inner ring and the outer ring are of a split structure or an integral structure, the split structure refers to that the inner layer and the outer layer of the inner ring and the outer ring are assembled together after being processed and manufactured respectively, and the integral structure refers to that the inner ring and the outer ring.
In the invention, the structural forms of the outer left electrode and the inner left electrode are completely the same, the structural forms of the outer right electrode and the inner right electrode are completely the same, hereinafter, the outer left electrode and the inner left electrode are collectively called as the left electrode, the outer right electrode and the inner right electrode are collectively called as the right electrode, and the left electrode and the right electrode are made of copper.
The left electrode consists of a left comb back, left comb teeth and a left terminal, and the left comb teeth and the left terminal are positioned on two sides of the left comb back; the right electrode consists of a right comb back, right comb teeth and a right terminal, the right comb teeth and the right terminal are positioned on the same side of the right comb back, and the right terminal is actually lengthened right comb teeth; the left electrode is in a non-closed annular structure, and the right terminal penetrates through gaps at two ends of the left electrode; the left and right comb teeth are installed in a crossed mode and are not in contact with each other, the free ends of the left and right terminals are flush and are located on the same side of the inner ring after installation, and the left and right terminals are respectively in pressure connection with contacts of the left and right electrode rings.
In order to ensure that all the rollers are simultaneously contacted with the left comb teeth or the right comb teeth on the inner ring or simultaneously contacted with the left comb teeth or the right comb teeth on the outer ring, the left comb teeth and the right comb teeth are equal in number and are integral multiples of the number of the rollers, the left comb teeth and the right comb teeth are equal in length and are both greater than the length of the rollers, and two ends of the rollers are not crossed with the left comb back and the right comb back, namely the projections of the rollers and the left comb back and the right comb back on the same.
In the work, the roller rolls between the inner ring and the outer ring, the roller and the inner ring and the outer ring are contacted with each other and generate charges in the rolling process, the left electrode and the right electrode generate induced charges, and the properties of the induced charges generated by the roller and the inner ring and the outer ring in rolling contact are different due to the different abilities of different materials for attracting electrons; under the condition that different static charges exist on the surfaces of the roller and the inner ring and the outer ring, a potential difference is generated between the left electrode and the right electrode of the outer ring and a potential difference is generated between the left electrode and the right electrode of the inner ring; when the roller rotates, the roller is alternately contacted and separated with the left electrode and the right electrode on the inner ring and the outer ring, so that the potential difference between the two electrodes of the inner ring and the outer ring is alternately increased and decreased, and the two electrodes are connected through a load to have current flowing and power output; the generated electric energy is processed by a conversion circuit on the circuit board and then is supplied to the sensor, the sensor obtains the temperature, the rotating speed or the vibration parameters of the bearing in real time, and the obtained performance parameter information is transmitted by a transmitting unit on the circuit board, so that the self-powered monitoring process of the bearing is completed.
In the above operation, the contact of the roller with one electrode means that the central angle of the roller overlaps with the central angle of the left comb tooth or the right comb tooth, and the separation of the roller from one electrode means that the central angle of the roller does not overlap with the central angle of the left comb tooth or the right comb tooth.
In the invention, the charge characteristics generated by the relative motion among the components are related to the materials of the components, the materials of the inner ring and the outer ring are the same nonmetal, and the material of the roller is metal or nonmetal; the rollers generate different charges when they are in rolling contact with the inner and outer races, such as: when the roller material is metal or nylon and the inner and outer rings are made of polytetrafluoroethylene, the roller is positively charged and the inner and outer rings are negatively charged; when the rollers and the non-metallic materials of the inner and outer races are interchanged, they carry opposite charge properties.
Advantages and features: the shafting monitoring device has the advantages of simple overall structure, small volume, high integration level and reliability, no electromagnetic interference, high temperature resistance, small or no influence of the output voltage of the power generation unit by the rotating speed, and strong power generation and power supply capacity, and can be used for monitoring the state of a shafting as an independent component.
Drawings
FIG. 1 is a cross-sectional view of a bearing in accordance with a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view of the outer race construction in accordance with a preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view of the inner ring structure in accordance with a preferred embodiment of the present invention;
FIG. 5 is a schematic view of the left and right electrodes in combination in a preferred embodiment of the invention;
FIG. 6 is a schematic structural view of a housing according to a preferred embodiment of the present invention;
FIG. 7 is a right side view of FIG. 6;
FIG. 8 is a schematic view of a rotating plate according to a preferred embodiment of the present invention;
fig. 9 is a right side view of fig. 8.
Detailed Description
The invention provides a roller bearing with a monitoring device, which mainly comprises an inner ring b, an outer ring a, a roller c, a support d, a shell f, a rotating plate g, a sensor s and a circuit board p, wherein the inner ring b, the outer ring a, the shell f and the rotating plate g are made of nonmetal materials, and the roller c and the support d are made of metal or nonmetal materials different from the inner ring b and the outer ring a.
An annular roller path is arranged on the inner edge of the outer ring a, the outer ring a is arranged on the inner ring b through a bracket d and a roller c, and the roller c is embedded into the roller path of the outer ring a; the end part of the outer ring a is provided with a shell f through a screw, and the end part of the inner ring b is provided with a rotating plate g through a screw; a bottom plate f1 is arranged at one end of a shell wall f2 of the shell f, a ring plate f3 is arranged at the other end of the shell f, a circuit board p and a sensor s are mounted on the bottom plate f1 of the shell f, an inner wiring column group and an outer wiring column group are arranged on the ring plate f3 of the shell f, the inner wiring column group comprises an inner left wiring column j1 and an inner right wiring column j2, and the outer wiring column group comprises an outer left wiring column j3 and an outer right wiring column j 4; the rotating plate g is provided with a left electrode ring k with a left contact k1 and a right electrode ring m with a right contact m1, the inner terminal group is in sliding contact with the left electrode ring k and the right electrode ring m, namely, the inner left terminal j1 and the inner right terminal j2 are respectively abutted against the left electrode ring k and the right electrode ring m, and the sensor s and the inner and outer terminal groups are connected with the circuit board p through different lead groups.
The roller c is a cylindrical roller or a tapered roller, the roller c and the bracket d are made of metal or nonmetal, the outer ring a and the inner ring b are made of the same nonmetal, and the nonmetal materials are nylon, polytetrafluoroethylene, polyethylene or polyimide and the like; an outer electrode group is embedded between an inner layer a1 and an outer layer a2 of the outer ring a, an inner electrode group is embedded between an inner layer b1 and an outer layer b2 of the inner ring b, the outer electrode group is composed of a comb-shaped outer left electrode h and an outer right electrode i, the inner electrode group is composed of a comb-shaped inner left electrode h 'and an inner right electrode i', the outer ring a and the inner ring b are of a split structure or an integral structure, the split structure means that the inner layer a1 and the outer layer a2 of the outer ring a are respectively processed and assembled together, the inner layer b1 and the outer layer b2 of the inner ring b are respectively processed and assembled together, and the integral structure means that the outer ring a and the inner ring b are both of an integral structure containing the inner electrode group or the outer electrode group manufactured by an.
In the invention, the structural forms of the outer left electrode h and the inner left electrode h 'are completely the same, the structural forms of the outer right electrode i and the inner right electrode i' are completely the same, hereinafter, the outer left electrode h and the inner left electrode h 'are collectively called left electrode h, the outer right electrode i and the inner right electrode i' are collectively called right electrode, and the left electrode h and the right electrode i are made of copper.
The left electrode h consists of a left comb back h1, a left comb tooth h2 and a left terminal h3, and the left comb tooth h2 and the left terminal h3 are positioned at two sides of the left comb back h 1; the right electrode i consists of a right comb back i1, a right comb tooth i2 and a right terminal i3, the right comb tooth i2 and the right terminal i3 are positioned on the same side of the right comb back i1, and the right terminal i3 is actually a lengthened right comb tooth i 2; the left electrode h is in a non-closed annular structure, and the right terminal i3 penetrates through a gap at two ends of the left electrode h; the left comb h2 and the right comb i2 are installed in a crossed mode and are not in contact with each other, after the installation, the free ends of the left terminal h3 and the right terminal i3 are flush and are located on the same side of the inner ring b, and the left terminal h3 and the right terminal i3 are respectively in pressure joint with the left contact k1 and the right contact m1 on the rotating plate g.
In order to ensure that all the rollers c are simultaneously contacted with the left comb tooth h3 or the right comb tooth i3 on the inner ring b or simultaneously contacted with the left comb tooth h3 or the right comb tooth i3 on the outer ring a, the number of the left comb tooth h2 and the number of the right comb tooth i2 are equal and integral multiples of the number of the rollers c, the lengths of the left comb tooth h2 and the right comb tooth i2 are equal and are both larger than the length of the rollers c, and two ends of the rollers c are not crossed with the left comb back h1 and the right comb back i1, namely the projections of the rollers c and the left comb back h1 and the right comb back i1 on the same axial section of the inner ring b or the outer ring a are not.
In work, the roller c rolls between the inner ring b and the outer ring a, friction charges can be generated in the process that the roller c is in mutual contact with the inner ring b and the outer ring a and rolls, the left electrode h and the right electrode i generate induced charges, and due to the fact that different materials have different capacities of attracting electrons, the properties of the induced charges generated by the roller c in rolling contact with the inner ring b and the outer ring a are different; under the condition that different static charges exist on the surfaces of the roller c, the inner ring b and the outer ring a, a potential difference is generated between a left electrode h and a right electrode i on the outer ring a, and a potential difference is generated between the left electrode h and the right electrode i on the inner ring b; when the roller c rotates, the roller c is alternately contacted and separated with a left electrode h and a right electrode i on the inner ring b and the outer ring a, so that the potential difference between the two electrodes of the inner ring b and the outer ring a is alternately increased and decreased, and the two electrodes are connected through a load to have current flowing and power output; the generated electric energy is processed by a conversion circuit on the circuit board p and then is supplied to a sensor s, the sensor s obtains the temperature, the rotating speed or the vibration parameters of the bearing in real time, and the obtained performance parameter information is transmitted by a transmitting unit on the circuit board p, so that the self-powered monitoring process of the bearing is completed.
In the above operation, the contact of the roller c with one electrode means that the central angle Q of the roller c overlaps with the central angle Q of the left comb tooth h2 or the right comb tooth i2, and the separation of the roller c from one electrode means that the central angle Q of the roller c does not overlap with the central angle Q of the left comb tooth h2 or the right comb tooth i 2; fig. 2 shows the roller c in contact with the left electrode h and separated from the right electrode i.
In the invention, the charge characteristics generated by the relative motion among the components are related to the materials of the components, the materials of the inner ring b and the outer ring a are the same nonmetal, the material of the roller c is metal or nonmetal, and different charges are generated when the roller c is in rolling contact with the inner ring b and the outer ring a, such as: when the roller c is made of metal or nylon and the inner ring b and the outer ring a are made of polytetrafluoroethylene, the roller c is positively charged and the inner ring b and the outer ring a are negatively charged; when the non-metallic materials of the roller c and the inner ring b and the outer ring a are interchanged, the electric charge properties of the roller c and the non-metallic materials are opposite.
Compared with the existing self-power-generation monitoring bearing, the bearing provided by the invention has the advantages of simple overall structure, small volume, high integration level and reliability, no electromagnetic interference, high temperature resistance, small or no influence of the output voltage of the power generation unit on the rotating speed, and strong power generation and power supply capabilities.
Claims (2)
1. The utility model provides a take monitoring devices's roller bearing, includes interior outer lane, roller and support, and interior outer lane tip is equipped with commentaries on classics board and casing respectively, is equipped with circuit board and sensor on the bottom plate of casing, its characterized in that: an inner and outer wiring column group is arranged on a ring plate of the shell, a left electrode ring with a left contact and a right electrode ring with a right contact are arranged on the rotating plate, the inner wiring column group is in sliding contact with the left and right electrode rings, and the sensor and the inner and outer wiring column group are connected with the circuit board through different wire groups; an inner electrode group is embedded between the inner layer and the outer layer of the inner ring, an outer electrode group is embedded between the inner layer and the outer layer of the outer ring, the inner electrode group and the outer electrode group are both formed by comb-shaped left and right electrodes, the left electrode is formed by a left comb back, left comb teeth and a left terminal, and the right electrode is formed by a right comb back, right comb teeth and a right terminal; the left comb teeth and the right comb teeth are arranged in a crossed mode and are not in contact with each other, and the left terminal and the right terminal are respectively in pressure connection with the contacts of the left electrode ring and the right electrode ring; the left comb teeth and the right comb teeth are equal in number and are integral multiples of the number of the rollers, the lengths of the left comb teeth and the right comb teeth are equal and are both larger than the length of the rollers, and the two ends of the rollers are not crossed with the left comb back and the right comb back; the roller is contacted with the inner and outer rings in a rolling way to generate induced charges with different properties, potential differences are generated between the left and right electrodes of the inner and outer rings, the roller is alternately contacted and separated with the left and right electrodes on the inner and outer rings when rotating, the potential differences between the electrodes of the inner and outer rings are alternately increased and decreased, the two electrodes have current flowing and power output after being connected by a load, and the generated electric energy is processed by a conversion circuit on a circuit board and then is supplied to the sensor.
2. The roller bearing of claim 1, wherein: the roller is a cylindrical roller or a tapered roller, the inner ring and the outer ring are made of the same nonmetal, and the nonmetal material is nylon, polytetrafluoroethylene, polyethylene or polyimide; the roller and the bracket are made of metal or nonmetal, and generate different charges when the roller is in rolling contact with the inner ring and the outer ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110152198.5A CN112780669B (en) | 2021-02-04 | 2021-02-04 | Roller bearing with monitoring device |
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|---|---|---|---|
| CN202110152198.5A CN112780669B (en) | 2021-02-04 | 2021-02-04 | Roller bearing with monitoring device |
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| CN112780669A true CN112780669A (en) | 2021-05-11 |
| CN112780669B CN112780669B (en) | 2022-07-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016084843A (en) * | 2014-10-24 | 2016-05-19 | 日本精工株式会社 | Rolling bearing device |
| WO2019134065A1 (en) * | 2018-01-02 | 2019-07-11 | 舍弗勒技术股份两合公司 | Bearing assembly capable of generating electricity and bearing capable of generating electricity |
| CN111692250A (en) * | 2020-06-17 | 2020-09-22 | 腾讯科技（深圳）有限公司 | Friction power generation device based on friction type brake and friction type brake |
| CN112145548A (en) * | 2020-08-31 | 2020-12-29 | 清华大学 | Self-powered rolling bearing, bearing assembly and rotary machine |
-
2021
- 2021-02-04 CN CN202110152198.5A patent/CN112780669B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016084843A (en) * | 2014-10-24 | 2016-05-19 | 日本精工株式会社 | Rolling bearing device |
| WO2019134065A1 (en) * | 2018-01-02 | 2019-07-11 | 舍弗勒技术股份两合公司 | Bearing assembly capable of generating electricity and bearing capable of generating electricity |
| CN111692250A (en) * | 2020-06-17 | 2020-09-22 | 腾讯科技（深圳）有限公司 | Friction power generation device based on friction type brake and friction type brake |
| CN112145548A (en) * | 2020-08-31 | 2020-12-29 | 清华大学 | Self-powered rolling bearing, bearing assembly and rotary machine |
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| CN112780669B (en) | 2022-07-15 |
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