CN110454504B - Heavy-load high-temperature self-lubricating rolling bearing and machining process - Google Patents
Heavy-load high-temperature self-lubricating rolling bearing and machining process Download PDFInfo
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- CN110454504B CN110454504B CN201910764013.9A CN201910764013A CN110454504B CN 110454504 B CN110454504 B CN 110454504B CN 201910764013 A CN201910764013 A CN 201910764013A CN 110454504 B CN110454504 B CN 110454504B
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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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
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Abstract
The invention relates to a heavy-load high-temperature self-lubricating rolling bearing which comprises an inner ring, an outer ring and an intermediate ring arranged between the inner ring and the outer ring, wherein the inner ring, the intermediate ring and the outer ring are concentric, a ball group is arranged between the intermediate ring and the outer ring, the outer ring rotates relative to the intermediate ring according to the ball group, the intermediate ring is fixedly connected with the inner ring, a lubricating cavity is formed between the intermediate ring and the inner ring, a lubricant extruding device is arranged in the lubricating cavity and is communicated with a lubricant nozzle penetrating through the intermediate ring, and when the lubricant extruding device is heated, a lubricant in the lubricant extruding device is extruded between the intermediate ring and the outer ring through the lubricant nozzle by the lubricant extruding device to provide lubrication for the rolling of the ball group; the problem of noise and vibration caused by stains formed by the lubricating oil and the channel of the bearing is effectively avoided, and the working safety and stability of the bearing are improved.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a heavy-load high-temperature self-lubricating rolling bearing and a processing technology thereof.
Background
With the development of the mechanical industry technology, the design and manufacturing technology of the bearing is also comprehensively developed, and the bearing has the characteristic of wide application range. The bearing is a common mechanical structure in the mechanical industry, and plays roles of bearing load, reducing friction resistance and improving mechanical transmission efficiency for mechanisms rotating mutually.
In the prior art, heavy-duty bearings are various and can be divided into two main types, namely sliding friction bearings and rolling friction bearings according to the friction property of the bearing during working; the load that can be borne by it can be divided into: a radial bearing, or a radial bearing, which bears a radial load; a thrust bearing, or a thrust bearing, which bears an axial load; a radial thrust bearing, otherwise known as a radial thrust bearing, which can simultaneously bear radial and axial loads;
the sliding bearing is not divided into an inner ring and an outer ring, does not have a rolling body, and is made of wear-resistant materials, and the bearing is usually used for mechanical rotating parts with low speed, heavy load, lubricating oil filling and difficult maintenance; the rolling bearing is a mechanical element which changes sliding friction between a running shaft and a shaft seat into rolling friction so as to reduce friction loss; the rolling bearing generally consists of an outer ring, an inner ring, a rolling body and a retainer, and is convenient to use and maintain and high in bearing capacity at medium speed; the friction coefficient of the sliding bearing is larger than that of the rolling bearing, so that the rolling bearing is designed and used in most of the traditional mechanical rotating structures for improving the mechanical efficiency;
the currently adopted heavy-duty bearing bears a large load under rotation, so that when the heavy-duty bearing works, high temperature is generated due to increase of friction force, so that a lubricant in the bearing is easy to lose efficacy under the condition of high temperature, and the potential safety hazard of the use of the heavy-duty bearing is caused; in order to solve such a problem, a high-temperature rolling bearing is generally used, which is a self-lubricating bearing formed by forming holes of a proper size and orderly arrangement on a metal friction surface of a bearing base body and then embedding a molded solid lubricant having self-lubricating properties in the holes, and the load is borne by a metal base body high-force brass. Generally, the molded solid lubricant adopts graphite or molybdenum disulfide, the general working temperature of the molded solid lubricant is within 300 ℃, the working temperature of the molded solid lubricant is within 800 ℃, and the molded solid lubricant cannot be applied to the fields of high rotating speed and high environmental temperature; in addition, pitting or linear corrosion is easy to occur on the inner ring and the outer ring of the bearing, the pitting is that when the rolling bodies are in contact with the channels, microscopic pits or linear pits are easy to form on the channels with relatively low curvature, and due to the existence of the pits or the linear pits, the bearing has a climbing effect in the running process, the internal loss is large, the noise is large, the vibration is large, and the bearing is easy to fatigue and damage in the running state, so that the service life of the heavy-duty bearing is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a heavy-duty high-temperature self-lubricating rolling bearing and a processing technology, wherein in the working state of the bearing, the generated heat can be absorbed so as to push the stored lubricant into a ball group for lubrication.
In order to achieve the purpose, the invention adopts the following technical scheme that the heavy-load high-temperature self-lubricating rolling bearing comprises an inner ring, an outer ring and an intermediate ring arranged between the inner ring and the outer ring, wherein the inner ring, the intermediate ring and the outer ring are concentric, a ball group is arranged between the intermediate ring and the outer ring, the outer ring rotates relative to the intermediate ring according to the ball group, the intermediate ring is fixedly connected with the inner ring, a lubricating cavity is formed between the intermediate ring and the inner ring, a lubricant extruding device is arranged in the lubricating cavity and is communicated with a lubricant nozzle penetrating through the intermediate ring, and when the lubricant extruding device is heated, the lubricant in the lubricant extruding device is extruded between the intermediate ring and the outer ring through the lubricant nozzle to provide lubrication for the rolling of the ball group.
The lubricant extruding device comprises a lubricant rubber capsule body and an expansion rubber capsule body, wherein a lubricant extruding pipe communicated with the lubricant rubber capsule body is arranged on the lubricant rubber capsule body, and the lubricant extruding pipe is positioned in a lubricant nozzle; the expansion rubber capsule body is internally provided with a thermal expansion and cold contraction medium, when the thermal expansion and cold contraction medium in the expansion rubber capsule body is heated, the expansion rubber capsule body expands and extrudes the lubricant rubber capsule body, and the lubricant in the lubricant rubber capsule body is extruded between the middle ring and the outer ring through the lubricant extrusion pipe.
The lubricant rubber capsule body and the expansion rubber capsule body are of an integral structure.
One end face of the lubricant rubber capsule body is fixedly connected with the top of the lubricating cavity, the other end face of the lubricant rubber capsule body is in contact with the expanded rubber capsule body, the end face in contact with the lubricant rubber capsule body is arched, when a medium with thermal expansion and cold contraction in the expanded rubber capsule body is to be heated, the surface, in contact with the lubricant rubber capsule body, of the expanded rubber capsule body is sunken downwards to form a sunken surface, and the arched surface of the lubricant rubber capsule body is embedded in the sunken surface of the expanded rubber capsule body.
The lubricant extrusion device further comprises a heat conduction box body, the lubricant rubber bag body and the expansion rubber bag body are located in the heat conduction box body, a heat insulation layer is coated on the inner wall of the heat conduction box body outside the lubricant rubber bag body, and a heat conduction layer is coated on the inner wall of the heat conduction box body outside the expansion rubber bag body.
And the expansion rubber bag body is provided with a thermal expansion and cold contraction medium adding pipeline, and the end part of the thermal expansion and cold contraction medium adding pipeline penetrates through the heat conduction box body and extends to the side surface of the bearing.
The medium for thermal expansion and cold contraction in the expansion rubber bag body is water or air.
The sealing ring is fixedly arranged between two sides of the outer ring and the middle ring, an annular channel concentric with the center of the sealing ring is arranged in the sealing ring, a plurality of inner holes and outer holes extending inwards the sealing ring are respectively arranged on two side faces of the sealing ring, the inner holes and the outer holes are communicated with the annular channel, the inner holes and the outer holes are arranged in a staggered mode, and a fixing hole penetrating through the sealing ring is further formed in the sealing ring.
The side of the lubricated chamber that the intermediate ring and inner ring formed is equipped with the heat conduction ring, and one side of this heat conduction ring is equipped with protruding ring, and this protruding ring is concentric with the center of heat conduction ring, be equipped with the connecting hole that passes the heat conduction ring on the heat conduction ring, the connecting hole is located the outside of protruding ring, still be equipped with the emollient filling opening and the expend with heat and contract with cold medium filling opening that pass heat conduction ring and protruding ring in proper order on the heat conduction ring, the emollient filling opening and the emollient rubber bag body intercommunication, expend with heat and contract with cold medium filling opening and the inflation rubber bag body intercommunication, be equipped with the sealing washer on the medial surface of heat conduction ring, be equipped with the.
A processing technology of a heavy-load high-temperature self-lubricating rolling bearing comprises the following steps:
the method comprises the following steps: arranging an inner ring, an intermediate ring and an outer ring concentrically, connecting the arranged inner ring with one side of the intermediate ring through a heat-conducting ring, connecting the outer ring with one side of the intermediate ring through a sealing ring, and enabling the heat-conducting ring and the sealing ring to be on the same side;
step two, mounting the ball group between the outer ring and the middle ring, then connecting the outer ring with the other side of the middle ring through a sealing ring, mounting the lubricant extrusion device between the middle ring and the inner ring, and then fixedly connecting the heat-conducting ring with the other side of the middle ring and the inner ring;
and step three, injecting a lubricant and a thermal expansion and cold contraction medium into the expansion rubber capsule body and the lubricant rubber capsule body in the lubricant extruding device through the lubricant injection port and the thermal expansion and cold contraction medium injection port, and enabling the expansion rubber capsule body and the lubricant rubber capsule body to reach a saturated state to finish the installation of the whole bearing.
The invention has the beneficial effects that: the lubricant extruding device is arranged and is in contact with the ball group between the middle ring and the outer ring after being extruded by the lubricant, the lubricating property of the bearing running at high temperature is guaranteed, the bearing is effectively protected, meanwhile, the lubricant can be extruded into the ball group only under high temperature and high-speed running, the problem of noise and vibration caused by the fact that stains are formed on the channel of the lubricant and the bearing is effectively avoided, and the safety and the stability of the bearing work are improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side cross-sectional structural schematic view of the present invention;
FIG. 3 is a schematic view showing a structure in which a lubricant rubber capsule body and an expansion rubber capsule body are integrated in a lubricant pressing device;
FIG. 4 is a schematic structural view showing a lubricant rubber capsule body and an expanded rubber capsule body in a lubricant pressing device in a split type;
FIG. 5 is a schematic view of the structure of the seal ring of the present invention;
FIG. 6 is a side cross-sectional structural view of the seal ring of the present invention;
FIG. 7 is a schematic view of a thermally conductive ring according to the present invention;
FIG. 8 is a perspective view of a thermally conductive ring according to the present invention;
fig. 9 is a side cross-sectional structural view of a heat transfer ring according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
As shown in fig. 1 and fig. 2, the heavy-duty high-temperature self-lubricating rolling bearing comprises an inner ring 3, an outer ring 1, an intermediate ring 2 arranged between the inner ring 3 and the outer ring 1, the inner ring 3, the middle ring 2 and the outer ring 1 are concentric, a ball group 4 is arranged between the middle ring 2 and the outer ring 1, the outer ring 1 rotates relative to the middle ring 2 according to the ball group 4, the middle ring 2 is fixedly connected with the inner ring 3, a lubricating cavity is formed between the middle ring 2 and the inner ring 3, a lubricant squeezing device 5 is arranged in the lubricating cavity, the lubricant squeezing device 5 is communicated with a lubricant nozzle 10 penetrating the middle ring 2, when the lubricant squeezing device 5 is heated, the lubricant squeezing device 5 squeezes the lubricant in the lubricant squeezing device 5 through the lubricant nozzle 10 to be squeezed between the middle ring 2 and the outer ring 1, and lubrication is provided for rolling of the ball group 4.
The bearing is the biggest difference from the existing bearing and is formed by three ring bodies, namely an inner ring 3, an outer ring 1 and an intermediate ring 2, wherein the side surfaces of the outer ring and the intermediate ring are connected through a sealing ring, the sealing ring is fixedly connected with the intermediate ring 2, the sealing ring is movably connected with the outer ring and can ensure that the outer ring can rotate relative to the intermediate ring, the two side surfaces of the intermediate ring and the inner ring are respectively and fixedly connected through a heat conduction ring and can ensure that the intermediate ring and the inner ring are relatively fixed, the outer ring and the intermediate ring are connected through the sealing ring, the sealing performance of an annular cavity formed by the outer ring and the intermediate ring can be effectively ensured, the ball group arranged between the intermediate ring and the outer ring is prevented from falling into dust, and the bearing is unstable in the using process, is common general knowledge in the art and will not be described in detail herein; the lubricant extruding device 5 is positioned in a lubricating cavity formed between the middle ring and the inner ring, a large amount of heat is generated when the bearing runs at a high speed, the heat heats the lubricant extruding device 5, the heated lubricant extruding device extrudes a lubricant nozzle with the lubricant placed in the lubricant extruding device 5 under the action of thermal expansion and cold contraction, the lubricating effect is provided for rolling a ball group, the safe running of the whole bearing is effectively ensured, the problem that the lubricant is not suitable to be added when the bearing runs at a high speed at present is solved, and the bearing can be stable in working without noise.
Specifically, as shown in fig. 3 and 4, the lubricant squeezing device 5 includes a lubricant rubber capsule body 9 and an expansion rubber capsule body 8, a lubricant squeezing pipe 6 communicated with the inside of the lubricant rubber capsule body 9 is arranged on the lubricant rubber capsule body 9, and the lubricant squeezing pipe 6 is located in a lubricant nozzle 10; the expansion rubber capsule body 8 is internally provided with a medium for expansion with heat and contraction with cold, when the medium for expansion with heat and contraction with cold in the expansion rubber capsule body 8 is heated, the expansion rubber capsule body 8 expands and extrudes the lubricant rubber capsule body 9, and the lubricant in the lubricant rubber capsule body 9 is extruded between the middle ring 2 and the outer ring 1 through the lubricant extrusion pipe 6. The lubricating agent rubber capsule body 9 and the expansion rubber capsule body are both made of high-temperature resistant rubber, so that the elasticity of the lubricating agent rubber capsule body 9 and the expansion rubber capsule body cannot be changed excessively under the condition of high temperature, particularly, a large amount of heat is generated under the condition that a bearing rotates at high speed, a medium expanding with heat and contracting with cold in the expansion rubber capsule body absorbs the heat and expands, the volume of the expansion rubber capsule body is increased, the rubber capsule body filled with the lubricating agent is extruded, the lubricating agent in the lubricating agent rubber capsule body is forced to be extruded between the middle ring and the outer ring, and the lubricating effect is provided for the ball group. Just can enter into the cavity of ball group with emollient, be equipped with pressure valve 11 in the mouth of pipe of emollient extrusion pipe 6, this pressure valve 11 carries out the design pressure value according to the extrusion degree of extrusion emollient rubber capsule body when designing, guarantees that emollient can in time enter into the cavity of ball group to the extravagant condition can not take place.
Add into expend with heat and contract with cold medium in the expanded rubber capsule body be cold-shrink air or water, the cold-shrink air can take place the inflation under high temperature, effectual messenger's expanded rubber capsule body gets the volume increase, and then urge to the emollient rubber capsule body and form the oppression, form the extrusion to inside emollient, adopt water as the medium, at first water can play the effect of cooling to whole bearing, water can produce vapor under the circumstances of heating simultaneously, the effectual volume that has increased, can effectually form the oppression to emollient rubber capsule body, therefore this embodiment is when choosing the medium, adopt water as expend with heat and contract with cold medium, environmental protection and energy saving.
When the lubricant rubber capsule body 9 and the expansion rubber capsule body 8 are designed, the lubricant rubber capsule body 9 and the expansion rubber capsule body 8 are of an integral structure, and meanwhile, the volume of the lubricant rubber capsule body 9 is guaranteed to be 2 times of the volume of the expansion rubber capsule body 8 at the lowest, so that the lubricant rubber capsule body 9 can be quickly extruded when the expansion rubber capsule body 8 expands.
Or, one end face of the lubricant rubber capsule body 9 is fixedly connected with the top of the lubricating cavity, the other end face of the lubricant rubber capsule body 9 is in contact with the expansion rubber capsule body 8, the end face in contact with the lubricant rubber capsule body 9 is in an arc shape, when the thermal expansion and contraction medium in the expansion rubber capsule body 8 is to be heated, the contact face of the expansion rubber capsule body 8 and the lubricant rubber capsule body 9 is sunken downwards to form a sunken face, and the arc-shaped face of the lubricant rubber capsule body 9 is embedded in the sunken face of the expansion rubber capsule body 8. The lubricant rubber capsule body 9 in this embodiment is the components of a whole that can function independently with the expansion rubber capsule body 8, more convenient when the installation, simultaneously the top of this expansion rubber capsule body 8 is sunken setting, under the volume grow circumstances of carrying out expend with heat and contract with cold, this recessed device at first expands, sunken face is when resumeing, at first to the parcel bow-shaped face in sunken face form the extrusion, and then can be quick extrude the lubricant rubber capsule body 9, squeeze into the ball chamber with lubricant, be simultaneously setting up lubricant rubber capsule body 9 and be, the volume that lubricant rubber capsule body 9 connects 6 positions of lubricant extrusion pipe is as far as possible, can guarantee its quick extrusion, and can guarantee extruded pressure.
In design, in order to ensure that the expanded rubber capsule body 8 and the lubricant rubber capsule body 9 are protected, the lubricant extrusion device 5 further comprises a heat conduction box body 12, the lubricant rubber capsule body 9 and the expanded rubber capsule body 8 are located in the heat conduction box body 12, a heat insulation layer 14 is coated on the inner wall of the heat conduction box body 12 outside the lubricant rubber capsule body 9, and a heat conduction layer 13 is coated on the inner wall of the heat conduction box body 12 outside the expanded rubber capsule body 8. The expansion rubber capsule body 8 and the lubricant rubber capsule body 9 are arranged in the heat conduction box body 12, can protect the same, meanwhile, the heat is collected through the heat conduction box body, so that more collected heat is ensured, the whole lubricant extruding device 5 can be rapidly heated, the extruding effect is achieved, meanwhile, the heat-insulating layer 14 is coated on the inner wall of the heat-conducting box body 12 outside the lubricant rubber capsule body 9, so that the collected heat cannot affect the lubricant rubber capsule body 9 as much as possible, the designed heat-conducting layer can accelerate the transmission of the collected heat and the expansion rubber capsule body 8, specifically, the end surfaces of the middle ring and the inner ring, which face the middle ring, are respectively provided with a groove ring, so that the annular heat-conducting box body 12 can be ensured to be placed into an annular cavity formed by the opposite groove rings, and the installation convenience is ensured.
Further, in order to ensure that expansion and contraction media can be added to the expanded rubber capsule body 8 during use, an expansion and contraction media adding pipeline 15 is arranged on the expanded rubber capsule body 8, and the end of the expansion and contraction media adding pipeline 15 penetrates through the heat conduction box body 12 and extends to the side face of the bearing. The expansion and contraction medium added through the expansion and contraction medium adding pipeline 15 ensures that the expansion rubber capsule body 8 is in a saturated state before being used, and the expansion rubber capsule body 8 is heated to enlarge the volume.
Example 2
On the basis of embodiment 1, in order to avoid dust from falling into the bearing due to the sealing performance of the bearing and ensure the heat dissipation of the bearing, as shown in fig. 5 and 6, a sealing ring 16 is fixedly arranged between two sides of the outer ring 1 and the middle ring 2, an annular channel 19 concentric with the center of the sealing ring 16 is arranged in the sealing ring 16, a plurality of inner holes 18 and outer holes 17 extending into the sealing ring 16 are respectively arranged on two side surfaces of the sealing ring 16, the inner holes 18 and the outer holes 17 are communicated with the annular channel 19, the inner holes 18 and the outer holes 17 are arranged in a staggered manner, and a fixing hole 20 penetrating through the sealing ring 16 is further arranged on the sealing ring 16. The inner hole 18 is positioned on the inner side surface, the generated heat can enter the annular channel 19 through the inner hole to increase the heat conducting surface of the annular channel, and meanwhile, the heat entering the annular channel is discharged out of the bearing through the outer hole, so that the heat dissipation effect is effectively achieved. Meanwhile, due to the fact that the inner holes and the outer holes are in a staggered design, the inner holes and the outer holes are guaranteed not to be communicated, dust cannot directly enter the inner holes through the outer holes and enter the bearing, and a sealing effect is effectively achieved.
Further, in order to ensure that the expanded rubber capsule body 8 can rapidly collect heat, as shown in fig. 7, 8 and 9, a heat conduction ring 21 is disposed on a side edge of a lubrication cavity formed by the middle ring 2 and the inner ring 3, a protrusion ring 25 is disposed on one side of the heat conduction ring 21, the protrusion ring 25 is concentric with the center of the heat conduction ring 21, a connection hole 24 penetrating the heat conduction ring 21 is disposed on the heat conduction ring 21, the connection hole 24 is located on the outer side of the protrusion ring 25, a lubricant injection port 22 and an expansion/contraction medium injection port 23 sequentially penetrating the heat conduction ring 21 and the protrusion ring 25 are further disposed on the heat conduction ring 21, the lubricant injection port 22 is communicated with the lubricant rubber capsule body 9, the expansion/contraction medium injection port 23 is communicated with the expanded rubber capsule body 8, a sealing ring 26 is disposed on the inner side surface of the heat conduction ring 21, and a heat insulation layer 27 is disposed on. The lubricant injection port 22 and the thermal expansion and contraction medium injection port 23 are used for respectively filling the expansion rubber capsule body 8 and the lubricant rubber capsule body 9 with a medium and a lubricant, so that sufficient medium and lubricant are ensured during working, meanwhile, the heat loss is avoided by the arranged heat insulation layer, and the connection tightness is ensured by the arranged sealing ring.
A processing technology of a heavy-load high-temperature self-lubricating rolling bearing comprises the following steps:
the method comprises the following steps: arranging an inner ring 3, an intermediate ring 2 and an outer ring 1 concentrically, and then connecting the arranged inner ring 3 with one side of the intermediate ring 2 through a heat conduction ring 21, connecting the outer ring 1 with one side of the intermediate ring 2 through a sealing ring 16, wherein the heat conduction ring 21 and the sealing ring 16 are on the same side;
step two, installing the ball group 4 between the outer ring 1 and the middle ring 2, then connecting the other sides of the outer ring 1 and the middle ring 2 through the sealing ring 16, installing the lubricant extruding device 5 between the middle ring 2 and the inner ring 3, and then fixedly connecting the heat conducting ring 21 to the other sides of the middle ring 2 and the inner ring 3;
and step three, injecting a lubricant and a thermal expansion and cold contraction medium into the expanded rubber capsule body 8 and the lubricant rubber capsule body 9 in the lubricant extruding device 5 through the lubricant injection port 22 and the thermal expansion and cold contraction medium injection port 23, and enabling the expanded rubber capsule body 8 and the lubricant rubber capsule body 9 to reach a saturated state, thereby completing the installation of the whole bearing.
The above embodiments are merely illustrative of the present invention, and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (9)
1. The heavy-load high-temperature self-lubricating rolling bearing is characterized by comprising an inner ring (3), an outer ring (1) and a middle ring (2) arranged between the inner ring (3) and the outer ring (1), wherein the inner ring (3), the middle ring (2) and the outer ring (1) are concentric, a ball group (4) is arranged between the middle ring (2) and the outer ring (1), the outer ring (1) rotates relative to the middle ring (2) according to the ball group (4), the middle ring (2) is fixedly connected with the inner ring (3), a lubricating cavity is formed between the middle ring (2) and the inner ring (3), a lubricant extruding device (5) is arranged in the lubricating cavity, the lubricant extruding device (5) is communicated with a lubricant nozzle (10) penetrating through the middle ring (2), and when the lubricant extruding device (5) is heated, the lubricant in the lubricant extruding device (5) is extruded to the middle ring (2) through the lubricant nozzle (10) 2) The outer ring (1) is used for providing lubrication for the rolling of the ball group (4);
the lubricant extrusion device (5) comprises a lubricant rubber capsule body (9) and an expansion rubber capsule body (8), a lubricant extrusion pipe (6) communicated with the interior of the lubricant rubber capsule body (9) is arranged on the lubricant rubber capsule body (9), and the lubricant extrusion pipe (6) is positioned in a lubricant nozzle (10); the expansion rubber capsule body (8) is internally provided with a medium with expansion caused by heat and contraction caused by cold, when the medium with expansion caused by heat and contraction caused by cold in the expansion rubber capsule body (8) is heated, the expansion rubber capsule body (8) expands and extrudes the lubricant rubber capsule body (9), and the lubricant in the lubricant rubber capsule body (9) is extruded between the middle ring (2) and the outer ring (1) through the lubricant extrusion pipe (6).
2. Heavy duty high temperature self lubricating rolling bearing according to claim 1, characterized in that the lubricant rubber capsule body (9) and the expansion rubber capsule body (8) are of one piece construction.
3. The heavy-load high-temperature self-lubricating rolling bearing according to claim 1, wherein one end face of the lubricant rubber capsule body (9) is fixedly connected with the top of the lubricating cavity, the other end face of the lubricant rubber capsule body (9) is in contact with the expansion rubber capsule body (8), the end face in contact with the lubricant rubber capsule body (9) is in a bow shape, when a medium with thermal expansion and cold contraction in the expansion rubber capsule body (8) is to be heated, the surface, in contact with the lubricant rubber capsule body (9), of the expansion rubber capsule body (8) is downwards sunken to form a sunken surface, and the bow surface of the lubricant rubber capsule body (9) is embedded in the sunken surface of the expansion rubber capsule body (8).
4. The heavy-duty high-temperature self-lubricating rolling bearing according to claim 1, wherein the lubricant squeezing device (5) further comprises a heat-conducting tank body (12), the lubricant rubber capsule body (9) and the expanded rubber capsule body (8) are located in the heat-conducting tank body (12), the inner wall of the heat-conducting tank body (12) outside the lubricant rubber capsule body (9) is coated with a heat-insulating layer (14), and the inner wall of the heat-conducting tank body (12) outside the expanded rubber capsule body (8) is coated with a heat-conducting layer (13).
5. The heavy-duty high-temperature self-lubricating rolling bearing according to claim 4, wherein the expanded rubber capsule body (8) is provided with a thermal expansion and contraction medium adding pipeline (15), and the end part of the thermal expansion and contraction medium adding pipeline (15) penetrates through the heat-conducting box body (12) and extends to the side surface of the bearing.
6. Heavy duty high temperature self lubricating rolling bearing according to claim 4 or 5, characterized in that the medium of thermal expansion and contraction in the expanding rubber capsule body (8) is water or air.
7. The heavy-load high-temperature self-lubricating rolling bearing according to claim 1, wherein a sealing ring (16) is fixedly arranged between the two sides of the outer ring (1) and the middle ring (2), an annular channel (19) concentric with the center of the sealing ring (16) is arranged in the sealing ring (16), a plurality of inner holes (18) and outer holes (17) extending into the sealing ring (16) are respectively arranged on two side faces of the sealing ring (16), the inner holes (18) and the outer holes (17) are communicated with the annular channel (19), the inner holes (18) and the outer holes (17) are arranged in a staggered mode, and a fixing hole (20) penetrating through the sealing ring (16) is further arranged on the sealing ring (16).
8. The heavy-duty high-temperature self-lubricating rolling bearing according to claim 1 or 7, wherein a heat-conducting ring (21) is provided at a side of a lubricating cavity formed by the intermediate ring (2) and the inner ring (3), a protruding ring (25) is provided at one side of the heat-conducting ring (21), the protruding ring (25) is concentric with the center of the heat-conducting ring (21), a connecting hole (24) penetrating through the heat-conducting ring (21) is provided on the heat-conducting ring (21), the connecting hole (24) is located at an outer side of the protruding ring (25), a lubricant injection port (22) and a thermal expansion and contraction medium injection port (23) sequentially penetrating through the heat-conducting ring (21) and the protruding ring (25) are further provided on the heat-conducting ring (21), the lubricant injection port (22) is communicated with a lubricant rubber capsule body (9), the thermal expansion and contraction medium injection port (23) is communicated with an expansion rubber capsule body (8), a sealing ring (26) is provided on an inner side, and a heat-insulating layer (27) is arranged on the inner side surface of the convex ring (25).
9. A processing technology of a heavy-load high-temperature self-lubricating rolling bearing is characterized by comprising the following steps:
the method comprises the following steps: arranging an inner ring (3), an intermediate ring (2) and an outer ring (1) concentrically, then connecting the arranged inner ring (3) with one side of the intermediate ring (2) through a heat-conducting ring (21), connecting the outer ring (1) with one side of the intermediate ring (2) through a sealing ring (16), and enabling the heat-conducting ring (21) and the sealing ring (16) to be on the same side;
step two, installing the ball group (4) between the outer ring (1) and the middle ring (2), then connecting the other sides of the outer ring (1) and the middle ring (2) through a sealing ring (16), installing a lubricant extruding device (5) between the middle ring (2) and the inner ring (3), and then fixedly connecting the heat conducting ring (21) to the other sides of the middle ring (2) and the inner ring (3);
and thirdly, injecting a lubricant and a thermal expansion and cold contraction medium into the expanded rubber capsule body (8) and the lubricant rubber capsule body (9) in the lubricant extrusion device (5) through the lubricant injection port (22) and the thermal expansion and cold contraction medium injection port (23), and enabling the expanded rubber capsule body (8) and the lubricant rubber capsule body (9) to reach a saturated state to complete the installation of the whole bearing.
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| CN201910764013.9A CN110454504B (en) | 2019-08-19 | 2019-08-19 | Heavy-load high-temperature self-lubricating rolling bearing and machining process |
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| CN110454504B true CN110454504B (en) | 2020-10-30 |
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| CN111871124A (en) * | 2020-07-31 | 2020-11-03 | 何安静 | Adsorption and filtration device for particulate matters in oil-containing waste gas |
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| CN113027925B (en) * | 2021-04-16 | 2022-08-23 | 南昌工程学院 | Self-sealing lubricating high-temperature rolling bearing and manufacturing method thereof |
| CN113565868B (en) * | 2021-07-29 | 2023-06-02 | 浙江中益机械有限公司 | Self-lubricating pin gear transmission mechanism |
| CN113586611B (en) * | 2021-08-10 | 2023-06-02 | 南昌工程学院 | Low-resistance triggering type self-lubricating porous material rolling bearing |
| CN114922713B (en) * | 2022-05-26 | 2023-06-02 | 江西中发天信航空发动机科技有限公司 | Drip irrigation type bearing lubricating structure and short-service-life aeroengine |
| CN116202325B (en) * | 2023-05-05 | 2023-07-07 | 山东奥克罗拉新材料科技有限公司 | Composite silicon carbide roller |
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| CN207195451U (en) * | 2017-08-16 | 2018-04-06 | 新昌县普利轴承有限公司 | A kind of self-lubricating dynamic bearing |
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| CN207195451U (en) * | 2017-08-16 | 2018-04-06 | 新昌县普利轴承有限公司 | A kind of self-lubricating dynamic bearing |
| CN109915478A (en) * | 2017-12-12 | 2019-06-21 | 湘潭市锦程半导体科技有限公司 | A kind of modified form high intensity self-lubricating bearing |
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