CN116877586B - Anti-electric corrosion bearing - Google Patents
Anti-electric corrosion bearing Download PDFInfo
- Publication number
- CN116877586B CN116877586B CN202310972759.5A CN202310972759A CN116877586B CN 116877586 B CN116877586 B CN 116877586B CN 202310972759 A CN202310972759 A CN 202310972759A CN 116877586 B CN116877586 B CN 116877586B
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- ring
- bearing
- expansion ring
- air outlet
- sheets
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- 238000005260 corrosion Methods 0.000 title claims abstract description 20
- 230000007797 corrosion Effects 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 5
- 230000017525 heat dissipation Effects 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16C37/00—Cooling of bearings
- F16C37/007—Cooling of bearings of rolling bearings
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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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
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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
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to an electric corrosion resistant bearing, which belongs to the technical field of bearings and comprises an outer ring, an inner ring and balls arranged between the outer ring and the inner ring, wherein an insulating sleeve is sleeved on the outer side of the outer ring, the insulating sleeve comprises radiating fins and insulating sheets, the radiating fins are sleeved on the outer ring and are attached to the outer end wall of the outer ring, the insulating sheets are provided with a plurality of groups, and the groups of insulating sheets are circumferentially distributed on the outer side of the outer ring. According to the invention, when the temperature is raised, the upper piece and the lower piece can be increased by the expansion piece which is expanded by heating, so that the air outlet hole above the insulating piece is unblocked with the outside air, the heat dissipation effect in the annular cavity is improved, and meanwhile, the integral insulating sleeve structure in the traditional technology is avoided, the upper piece and the lower piece which can be separated up and down are adopted, when the temperature inside the bearing, particularly the temperature of the contact part of the bearing and the ball, is high, the space between the upper piece and the lower piece is exposed, and the heat dissipation effect of the contact part of the bearing and the ball is improved.
Description
Technical Field
The invention belongs to the technical field of bearings, and particularly relates to an electric corrosion prevention bearing.
Background
The bearing is mainly used for supporting a mechanical rotating body, reducing friction coefficient in the moving process and ensuring the rotating precision of the mechanical rotating body, but because a potential difference is generated between a shaft and the bearing when the motor bearing operates to form a loop to generate current, the current of the shaft discharges to generate high temperature, grooves are formed on the surfaces of the inner ring and the outer ring of the bearing and the steel balls, and the performance of the bearing is affected.
The prior art discloses a technical scheme of a bearing with the publication number of CN108286572B and the patent name of the bearing for preventing electric corrosion, and particularly discloses a bearing comprising a bearing body, a bearing seat and an insulating annular bushing, wherein a bearing chamber for accommodating the annular bushing is arranged in the bearing seat, and the annular bushing is positioned in the bearing chamber and is tightly connected with the bearing seat; the bearing body is located the annular bush, and with the technical scheme of annular bush tight fit connection, above-mentioned scheme can solve the bearing electric corrosion, effectively prolongs bearing life.
The annular bushing in the technology is sleeved on the outer side of the bearing body (outer ring), when the bearing is used, the contact part of the steel ball and the bearing can generate high temperature due to friction, the relatively tight annular bushing can influence the emission of the temperature of the bearing, and the annular bushing is used for a long time, even if the electric corrosion can be avoided, the service life of the bearing can be reduced due to the fact that the temperature inside the bearing is too high.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides an anti-electric corrosion bearing, which can effectively solve the problem that in the prior art, a component for insulating the bearing causes difficulty in dissipating the internal temperature of the bearing.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides an electric corrosion resistant bearing, which comprises an outer ring, an inner ring and balls arranged between the outer ring and the inner ring, wherein an insulating sleeve is sleeved on the outer side of the outer ring, the insulating sleeve comprises radiating fins and insulating sheets, the radiating fins are sleeved on the outer ring and are attached to the outer end wall of the outer ring, the insulating sheets are provided with a plurality of groups, the groups of insulating sheets are circumferentially arranged on the outer side of the outer ring, each group of insulating sheets respectively comprises two upper sheets and two lower sheets which are arranged along the axis direction of the outer ring, the upper ends of the insulating sheets are provided with a plurality of air outlet holes, the upper sheets are movably arranged in the air outlet holes, the upper ends of the upper sheets are blocked at the openings of the air outlet holes, and an annular cavity is formed between the insulating sheets and the radiating fins.
The annular cavity is internally provided with an annular expansion ring, a heated expansion material is filled in the expansion ring, one end of the expansion ring is attached to the end face of the radiating fin, the expansion ring is abutted against the upper piece and the lower piece when being heated to expand, the upper piece and the lower piece are pushed away towards one end far away from the inner ring, the upper end of the upper piece is staggered with the air outlet hole, and the gas environment in the annular cavity is communicated with the external gas environment.
Further, one end of the inner wall of the air outlet hole, which faces the axis direction of the outer ring, is an inclined plane, and the upper end part of the upper sheet is vertically bent towards one end direction of the inclined plane and is attached to the inclined plane.
Further, one end of the upper sheet facing the radiating fin is vertically provided with a lifting sheet, the lifting sheets are arranged above the expansion ring in parallel, one end of the expansion ring facing the lifting sheet is provided with a supporting plate, and the supporting plate is attached to the bottom end of the lifting sheet and pushes the lifting sheet to one side of the air outlet hole when the expansion ring is expanded by heating.
Further, the support plate is made of heat-resistant rubber with thinner end walls, a cavity is formed in the support plate, a liquid storage ring is arranged in the expansion ring, and liquid working media are filled in the liquid storage ring and are communicated with the cavity in the support plate through a communicating pipe.
Further, two layers of independent spaces are arranged in the expansion ring, each layer of space is filled with a heated expansion material, and the two layers of spaces are symmetrically distributed at two ends of the ball.
Further, an annular balloon is arranged in the space of one side of the expansion ring, which is far away from the air outlet, and the air outlet end of the annular balloon is communicated with the inside of the annular cavity through a pipeline.
Further, the corresponding end surfaces of the upper sheet and the lower sheet are respectively provided with a convex rail and a rail which are matched with each other, and one end of the lower sheet, which faces the expansion ring, is always fixed on the end surface of the expansion ring.
Further, an air passage is further arranged at the bottom of the expansion ring in the annular cavity, a pipeline connected with the air outlet end of the annular air ring is led into the air passage, and a plurality of air passing holes communicated with the inside of the annular cavity are formed in the air passage.
Further, a hollow heat dissipation cavity is formed in the heat dissipation fin, two groups of openings are distributed up and down at the outer end of the heat dissipation fin, each group of openings are provided with a plurality of openings and are circumferentially distributed at the outer end of the heat dissipation fin, one end of each opening is communicated with the heat dissipation cavity, and the other end of each opening is communicated with the inner portion of the annular cavity.
Further, one group of the holes is arranged near the hole opening of the air outlet, and the other group of the holes is arranged at the bottom end part of the radiating fin and communicated with the bottom space of the annular cavity.
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
according to the invention, when the temperature is raised, the upper piece and the lower piece can be increased by the expansion piece which expands due to heating, so that the air outlet hole above the insulating piece is unblocked with the outside air, and the heat dissipation effect in the annular cavity is improved.
Meanwhile, an integrated insulating sleeve structure in the prior art is avoided, an upper piece and a lower piece which can be separated up and down are adopted, when the temperature inside the bearing, particularly the temperature of the contact part of the bearing and the ball, is high, the upper piece and the lower piece can be separated, the space between the upper piece and the lower piece is exposed, and the heat dissipation effect of the contact part of the bearing and the ball is improved.
The annular air ring arranged on one side of the lower plate can jet air to the bottom of the annular cavity when being heated, so that the heat dissipation of the bottom of the annular cavity is guaranteed, the air circulation in the annular cavity is improved, and the heat dissipation effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is an exploded view of an example of a bearing and insulating sleeve according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a bearing according to an embodiment of the present invention;
FIG. 3 is a schematic view showing a cross-sectional state of an overall structure of a bearing according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure A in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the upper and lower sheets in contact in an embodiment of the present invention;
FIG. 6 is a schematic view showing the upper and lower sheets in a disengaged state according to an embodiment of the present invention;
FIG. 7 is a schematic view of a partial cross-sectional structure of an expansion ring according to an embodiment of the present invention;
fig. 8 is a schematic diagram showing an exploded structure of an insulating sheet according to an embodiment of the present invention.
Reference numerals: 1. an outer ring; 2. an inner ring; 3. an insulating sleeve; 31. a heat sink; 311. a heat dissipation cavity; 312. opening holes; 32. an insulating sheet; 321. loading a piece; 322. blanking; 323. an air outlet hole; 324. lifting a sheet; 325. a convex rail; 326. a track; 33. an annular cavity; 331. an expansion ring; 332. a supporting plate; 333. a liquid storage ring; 334. an annular balloon; 335. a gas passage; 4. and (3) rolling balls.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The invention is further described below with reference to examples.
In the use process of the motor, the bearing not only needs to consider the heat generated by internal friction, but also needs to prevent the heat caused by current generated between the shaft and the bearing, so that the bearing is required to be well controlled, and meanwhile, the bearing is required to be well insulated from the inside and the outside.
The existing method is realized by only sleeving an insulating sleeve on the outer end (outer ring) of the bearing, the heat dissipation capacity of the outer end of the bearing is greatly realized by the transmission of the shaft seat and the external temperature, and the added insulating sleeve can obstruct the contact between the bearing and the shaft seat, so that the heat dissipation environment of the outer end of the bearing is poor.
Based on the above, a series of problems existing in the practical use process are combined, and a novel anti-electric corrosion bearing is provided, and the heat dissipation effect of the bearing is ensured by increasing the heat dissipation surface and increasing the air flow velocity in the cavity.
In particular, the present embodiment is illustrated in detail by the following examples.
Examples: referring to fig. 1-8, first, an anti-electric corrosion bearing in this solution mainly includes an outer ring 1, an inner ring 2, and balls 4 disposed between the outer ring 1 and the inner ring 2, where the balls 4 are plural and circumferentially distributed between the outer ring 1 and the inner ring 2, and when in use, a shaft rod is inserted into a cavity fixed in the middle of the inner ring 2, so that the inner ring 2 rotates in the middle of the outer ring 1.
And an annular cavity is arranged in the middle of the outer side of the outer ring 1, an insulating sleeve 3 is matched in the cavity, the insulating sleeve 3 comprises radiating fins 31 and insulating fins 32, the radiating fins 31 are attached to the outer side of the outer ring 1, and when the outer ring 1 and the ball 4 in the bearing are rubbed, heat generated is concentrated on the radiating fins 31, and the temperature of the middle position of the radiating fins 31 is highest.
The insulating piece 32 is equipped with a plurality of groups, and a plurality of groups of insulating piece 32 circumference are arranged in the outside of outer lane 1, and every group insulating piece 32 includes two respectively and follows the last piece 321 and the lower piece 322 that outer lane 1 axis direction arranged, goes up piece 321 and lower piece 322 and all be the arc slice that the radian is unanimous, and is equipped with protruding rail 325 and track 326 of mutually supporting respectively on the corresponding terminal surface of last piece 321 and lower piece 322 in this case to go up piece 321 and lower piece 322 are the metal material, and the surface has insulating coating, when last piece 321 and lower piece 322 conflict together, provides good insulating properties.
The upper end of the insulating sheet 32 is provided with a plurality of air outlet holes 323, the upper sheet 321 is movably mounted in the air outlet holes 323, the upper end of the upper sheet 321 is blocked at the orifice of the air outlet holes 323, an annular cavity 33 is formed between the insulating sheet 32 and the radiating sheet 31, the inner wall of the air outlet holes 323 is inclined towards one end of the axis direction of the outer ring 1, the upper end of the upper sheet 321 is vertically bent towards one end of the inclined plane and is attached to the inclined plane, when the upper sheet 321 and the lower sheet 322 are abutted together, namely, the convex rail 325 and the rail 326 are in a completely matched state, the air outlet holes 323 are in a blocking state, and the gas environment inside the annular cavity 33 is not communicated with the external gas environment.
The annular cavity 33 is provided with an annular expansion ring 331, the expansion ring 331 is filled with a thermal expansion material, one end of the thermal expansion ring 331 is attached to the end face of the cooling fin 31, the thermal expansion material is not limited, the expansion ring 331 is made of a thin-wall heat-resistant rubber material, when the temperature of the outer wall of the bearing is too high, the temperature is transferred to the expansion ring 331 through the cooling fin 31, the volume of the thermal expansion material inside the expansion ring 331 is increased, and accordingly the thermal expansion ring 331 can abut against the end faces of the upper piece 321 and the lower piece 322, and the upper piece 321 and the lower piece 322 are abutted against one side far away from the bearing.
Therefore, when the expansion ring 331 expands due to heating, the expansion ring collides against the upper plate 321 and the lower plate 322, the upper plate 321 and the lower plate 322 are pushed away towards one end far away from the inner ring 2, the upper end of the upper plate 321 is staggered with the air outlet 323, and the air environment in the annular cavity 33 is communicated with the external air environment.
Meanwhile, in this case, one end of the upper plate 321 facing the heat sink 31 is vertically provided with a lifting plate 324, the lifting plate 324 is parallel arranged above the expansion ring 331, wherein one end of the expansion ring 331 facing the lifting plate 324 is provided with a supporting plate 332, and the supporting plate 332 is attached to the bottom end of the lifting plate 324 and pushes the lifting plate 324 towards one side of the air outlet 323 when the expansion ring 331 is expanded by heating.
Therefore, when the upper plate 321 receives thrust, the lifting plate 324 connected with the side end of the upper plate 321 receives an upward lifting force, the upper plate 321 can move towards the direction away from the bearing, and the upper end of the upper plate 321 is staggered with the air outlet 323, so that the air environment inside the annular cavity 33 is communicated with the external air environment.
It should be noted that, in this case, due to the presence of the protruding rail 325 and the rail 326, even if the expansion ring 331 expands to apply a pushing force to the upper sheet 321 and the lower sheet 322 due to a temperature rise, the upper sheet 321 and the lower sheet 322 still cannot be moved until the protruding rail 325 and the rail 326 are separated by the upward lifting force of the upper sheet 321.
When the bearing does not work or external refrigeration intervention is enhanced, the temperature of the bearing is reduced, so that the heated expansion material inside the expansion ring 331 starts to shrink, the volume is reduced, the supporting plate 332 starts to descend along with the reduction of the volume of the expansion ring 331, and at this time, the lifting sheet 324 attached to the supporting plate 332 can synchronously descend with the upper sheet 321 (the upper sheet 321 is made of metal and descends by self gravity).
It should be noted that, in this case, since the inner wall of the air outlet 323 is inclined toward one end of the axis direction of the outer ring 1, the upper end of the upper plate 321 is bent perpendicularly toward one end of the inclined plane and attached to the inclined plane, so that the track of the upper plate 321 is the same as the track of the upper plate when the upper plate is lifted, and after the upper plate 321 and the lower plate 322 are completely cooled, the corresponding end faces of the upper plate and the lower plate are re-combined.
Meanwhile, one end of the lower piece 322 facing the expansion ring 331 is always fixed on the end face of the expansion ring 331, and the lower piece 322 moves synchronously along with the movement of the expansion ring 331.
Further, the supporting plate 332 is made of heat-resistant rubber with thinner end wall, a cavity is provided in the supporting plate 332, a liquid storage ring 333 is provided in the expansion ring 331, the liquid storage ring 333 is filled with liquid working medium and is communicated with the cavity in the supporting plate 332 through a communicating pipe, the liquid working medium in the present case is water, when the heated expansion material in the expansion ring 331 expands due to temperature rise, the interior of the expansion ring will apply pressure to the liquid storage ring 333, the water in the liquid storage ring 333 is extruded into the supporting plate 332 through the communicating pipe, the supporting plate 332 begins to expand, and the height of the upper plate 321 is adjusted by expansion.
When the liquid storage ring 333 is no longer pressed by the heated expansion material, the liquid in the supporting plate 33 will flow back into the liquid storage ring 333, and the lower plate 322 will return to the initial position before the upper plate 321 due to the speed of the back flow being smaller than the speed of the retraction of the expansion ring 331.
In addition, in order to improve the air flow rate in the annular cavity 33, two layers of independent spaces are arranged in the expansion ring 331 in the scheme, each layer of space is filled with a heated expansion material, the two layers of spaces are symmetrically distributed at two ends of the ball 4, and the supporting plate 332 is arranged in the space above.
An annular air ring 334 is arranged in the space of the expansion ring 331 far away from the air outlet 323, the air outlet end of the annular air ring 334 is communicated with the inside of the annular cavity 33 through a pipeline, an air passing channel 335 is arranged at the bottom of the expansion ring 331 and positioned in the annular cavity 33, the pipeline connected with the air outlet end of the annular air ring 334 is led into the air passing channel 335, and a plurality of air passing holes communicated with the inside of the annular cavity 33 are formed in the air passing channel 335.
When the temperature rises, the heated expansion material in the expansion ring 331 presses the annular balloon 334, so that the air in the annular balloon 334 is pressed into the air passage 335 through the pipe, and the air flow rate of the bottom space is increased due to the communication between the air passage 335 and the annular cavity 33.
Because the hollow heat dissipation cavity 311 is formed in the heat dissipation plate 31, two groups of openings 312 are distributed up and down at the outer end of the heat dissipation plate 31, each group of openings 312 is provided with a plurality of openings and is circumferentially distributed at the outer end of the heat dissipation plate 31, one end of each opening 312 is communicated with the heat dissipation cavity 311, one group of openings 312 is arranged at the bottom end of the heat dissipation plate 31 and is communicated with the bottom space of the annular cavity 33, so that air in the bottom space is accelerated to enter the opening of the bottom end close to the air outlet 323 through the openings 312, and then flows out of the bearing from the air outlet 323, thereby improving the heat dissipation effect of the bottom space of the annular cavity 33.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an anti-electric corrosion bearing, includes outer lane, inner circle and establishes the ball between outer lane and inner circle, its characterized in that, the outside cover of outer lane has insulating cover, insulating cover is including:
the radiating fin is sleeved on the outer ring and attached to the outer end wall of the outer ring;
the insulation sheets are provided with a plurality of groups, the groups of insulation sheets are circumferentially arranged on the outer side of the outer ring, each group of insulation sheets respectively comprises two upper sheets and two lower sheets which are arranged along the axial direction of the outer ring, the upper ends of the insulation sheets are provided with a plurality of air outlet holes, the upper sheets are movably arranged in the air outlet holes, the upper ends of the upper sheets are blocked at the hole openings of the air outlet holes, and an annular cavity is formed between the insulation sheets and the radiating sheets;
the annular cavity is internally provided with an annular expansion ring, a heated expansion material is filled in the expansion ring, one end of the expansion ring is attached to the end face of the radiating fin, the expansion ring is abutted against the upper piece and the lower piece when being heated to expand, the upper piece and the lower piece are pushed away towards one end far away from the inner ring, the upper end of the upper piece is staggered with the air outlet hole, and the gas environment in the annular cavity is communicated with the external gas environment.
2. The electric corrosion resistant bearing of claim 1, wherein the inner wall of the air outlet is inclined toward the axial direction of the outer ring, and the upper end of the upper sheet is vertically bent toward one end of the inclined plane and is attached to the inclined plane.
3. The electric corrosion resistant bearing according to claim 2, wherein one end of the upper plate facing the radiating fin is vertically provided with a lifting plate, and the lifting plate is arranged above the expansion ring in parallel;
the expansion ring is provided with a supporting plate at one end facing the lifting sheet, and the supporting plate is attached to the bottom end of the lifting sheet and pushes the lifting sheet to one side of the air outlet hole when the expansion ring is heated and expanded.
4. An electric corrosion resistant bearing according to claim 3, wherein the support plate is made of heat resistant rubber with thinner end wall, a cavity is arranged in the support plate, a liquid storage ring is arranged in the expansion ring, and the liquid storage ring is filled with liquid working medium and communicated with the cavity in the support plate through a communicating pipe.
5. The electric corrosion resistant bearing of claim 4, wherein two independent spaces are provided in the expansion ring, each space is filled with a thermal expansion material, and the two spaces are symmetrically distributed at two ends of the ball.
6. An anti-galvanic corrosion bearing according to claim 5, wherein an annular balloon is disposed in the space on the side of the expansion ring remote from the gas outlet, and the gas outlet end of the annular balloon is in communication with the interior of the annular chamber via a conduit.
7. The electric corrosion resistant bearing of claim 6, wherein the corresponding end surfaces of the upper and lower sheets are respectively provided with a convex rail and a rail which are matched with each other, and one end of the lower sheet facing the expansion ring is always fixed on the end surface of the expansion ring.
8. The electric corrosion resistant bearing of claim 7, wherein the annular cavity is provided with an air passage at the bottom of the expansion ring, and the air outlet end of the annular air ring is connected with a pipeline leading to the air passage, and the air passage is provided with a plurality of air holes communicated with the inside of the annular cavity.
9. The electric corrosion resistant bearing of claim 8, wherein the heat sink has a hollow heat sink cavity formed therein, and two sets of openings are disposed at the outer end of the heat sink and distributed up and down, each set of openings having a plurality of openings and being circumferentially disposed at the outer end of the heat sink, and one end of each opening is in communication with the heat sink cavity and the other end is in communication with the interior of the annular cavity.
10. An electric corrosion resistant bearing according to claim 9 wherein one set of said openings is provided adjacent the aperture of the air outlet and the other set of openings is provided at the bottom end of the fin and communicates with the bottom space of the annular cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310972759.5A CN116877586B (en) | 2023-08-03 | 2023-08-03 | Anti-electric corrosion bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310972759.5A CN116877586B (en) | 2023-08-03 | 2023-08-03 | Anti-electric corrosion bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116877586A CN116877586A (en) | 2023-10-13 |
| CN116877586B true CN116877586B (en) | 2023-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310972759.5A Active CN116877586B (en) | 2023-08-03 | 2023-08-03 | Anti-electric corrosion bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116877586B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058289A (en) * | 2018-09-20 | 2018-12-21 | 江苏富天江电子电器有限公司 | A kind of bearing of the motor with anti-electrocorrosion structure |
| CN214367244U (en) * | 2020-11-29 | 2021-10-08 | 无锡精卫智造科技有限公司 | Bearing with electric corrosion prevention structure |
| CN216343380U (en) * | 2021-10-11 | 2022-04-19 | 瓦房店精广精密轧机轴承制造有限公司 | Corrosion-resistant heat dissipation type cylindrical roller bearing |
| CN116398542A (en) * | 2023-06-08 | 2023-07-07 | 苏州铁近机电科技股份有限公司 | Ultra-high-speed waterproof bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427784C (en) * | 2002-10-08 | 2008-10-22 | Ntn株式会社 | Electrolytic corrosion preventive antifriction bearing |
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- 2023-08-03 CN CN202310972759.5A patent/CN116877586B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058289A (en) * | 2018-09-20 | 2018-12-21 | 江苏富天江电子电器有限公司 | A kind of bearing of the motor with anti-electrocorrosion structure |
| CN214367244U (en) * | 2020-11-29 | 2021-10-08 | 无锡精卫智造科技有限公司 | Bearing with electric corrosion prevention structure |
| CN216343380U (en) * | 2021-10-11 | 2022-04-19 | 瓦房店精广精密轧机轴承制造有限公司 | Corrosion-resistant heat dissipation type cylindrical roller bearing |
| CN116398542A (en) * | 2023-06-08 | 2023-07-07 | 苏州铁近机电科技股份有限公司 | Ultra-high-speed waterproof bearing |
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| CN116877586A (en) | 2023-10-13 |
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