CN108119548B - Bearing bush, sliding bearing assembly with bearing bush and compressor - Google Patents
Bearing bush, sliding bearing assembly with bearing bush and compressor Download PDFInfo
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- CN108119548B CN108119548B CN201711346979.8A CN201711346979A CN108119548B CN 108119548 B CN108119548 B CN 108119548B CN 201711346979 A CN201711346979 A CN 201711346979A CN 108119548 B CN108119548 B CN 108119548B
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- oil
- groove
- oil outlet
- oil inlet
- rotating shaft
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
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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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a bearing bush, a sliding bearing assembly with the bearing bush and a compressor with the bearing bush. The bearing bush is sleeved on the rotating shaft, and a gap is reserved between the peripheral wall of the rotating shaft and the bearing bush. The bearing bush comprises a body part, wherein the body part is cylindrical and is sleeved on the rotating shaft. The body portion is provided with an oil inlet groove and an oil outlet groove spaced from the oil inlet groove, the oil inlet groove is communicated with the gap, and the oil outlet groove is communicated with the gap. The body part is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with the oil inlet groove, and the oil outlet hole is communicated with the oil outlet groove. According to the bearing bush, the oil inlet groove and the oil outlet groove which are spaced are arranged, so that the relative independence of oil inlet and oil outlet of the bearing bush can be realized, new oil flowing from the oil inlet groove can be fully mixed with hot oil in the gap, and the temperature of a rotating shaft can be effectively reduced. In addition, hot oil and impurities on the periphery of the rotating shaft can flow out of the oil outlet groove, so that the cleanliness in the bearing bush can be improved, and the lubricating effect between the bearing bush and the rotating shaft can be improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a bearing bush, a sliding bearing assembly with the bearing bush and a compressor.
Background
The sliding bearing is widely applied to the centrifugal compressor because of simple structure, convenient processing and low cost. In the related art, the sliding bearing has an axial oil groove, an oil supply hole is formed in the axial oil groove, lubricating oil can enter the axial oil groove through the oil supply hole, the lubricating oil between the rotating shaft and the bearing bush is heated by the high-speed rotating shaft to form hot oil, the hot oil can enter the axial oil groove every time the hot oil rotates for one circle, and the hot oil can be mixed with new oil. Sometimes in order to improve the mixed cooling effect of new oil in the axial oil groove, the oil groove end is provided with an oil drainage hole, and the mixed lubricating oil can flow out from the oil drainage hole. When the rotation axis was at high-speed when rotating, the circumferential speed of rotation axis was far more than the speed of the lubricating oil that the oil feed hole flowed into the oil groove, new oil injection proportion is very little, hot oil can't carry out the intensive mixing with new lubricating oil, can't fully cool down the rotation axis, the lubricating oil temperature around the rotation axis is higher, still can cause the lubricating oil between rotation axis periphery wall and the bearing internal perisporium to fill inadequately, can't fully lubricate the rotation axis, thereby lead to the lubricating oil viscosity to reduce, the rotation axis that still probably wears to cause the condition that slide bearing. Meanwhile, the hot oil may also contain impurities generated by the operation of the bearing, and the impurities cannot be effectively collected and discharged, so that the running risk of the bearing is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a bearing bush which has the advantages of simple structure, easiness in manufacturing and low cost.
The invention also provides a sliding bearing assembly which is provided with the bearing bush.
The invention further provides a compressor, and the compressor is provided with the bearing bush.
According to the bearing bush of the embodiment of the present invention, the bearing bush is externally sleeved on a rotating shaft, a gap is provided between an outer circumferential wall of the rotating shaft and the bearing bush, and the bearing bush includes: the body part is cylindrical and sleeved on the rotating shaft, the body part is provided with an oil inlet groove and an oil outlet groove spaced from the oil inlet groove, the oil inlet groove is communicated with the gap to supply oil to the gap, the oil outlet groove is communicated with the gap to discharge the oil in the gap, the body part is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with the oil inlet groove, and the oil outlet hole is communicated with the oil outlet groove.
According to the bearing bush provided by the embodiment of the invention, the oil inlet grooves and the oil outlet grooves are arranged and distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush can be realized, new oil flowing from the oil inlet grooves can be fully mixed with hot oil with high peripheral temperature of the rotating shaft, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft can be effectively reduced. In addition, the mixture of hot oil and new oil and impurities at the periphery of the rotating shaft can flow out of the oil outlet groove, so that circulation can be formed by matching with the oil inlet groove, the cleanliness in the bearing bush can be improved, and the lubricating effect between the bearing bush and the rotating shaft can be improved.
According to some embodiments of the present invention, the oil feed groove is located downstream of the oil discharge groove in a rotation direction of the rotary shaft. From this, the hot oil of clearance department can collect earlier and locate and follow the oil outlet outflow in the oil groove to can provide the space for the feeding of new oil, make new oil can fully cool down to the rotating shaft, improve the indirect heat exchange efficiency of new oil and rotating shaft, thereby can improve the working property of axle bush.
According to some embodiments of the invention, the oil inlet groove and the oil outlet groove are distributed along a circumferential direction of the body portion. From this, can be convenient for advance oil tank and oil outlet tank and set up in the extension of rotation axis axial direction, can improve new oil and hot oil effect.
According to some embodiments of the present invention, a part of the peripheral wall of the body part is protruded toward a radial outside of the rotating shaft to configure the oil inlet groove and the oil outlet groove. From this, be convenient for oil feed tank and the setting of going out the oil groove, and oil feed tank and the structure of going out the oil groove are more stable.
According to some embodiments of the invention, the outer bottom wall surface of the oil inlet groove is an arc-shaped surface, and the outer bottom wall surface of the oil outlet groove is an arc-shaped surface. Therefore, the inner wall surface of the oil inlet groove and the inner wall surface of the oil outlet groove are conveniently set to be arc-shaped surfaces, the arc-shaped surfaces are smooth curved surfaces, lubricating oil (such as hot oil and new oil) can flow conveniently, and the fluidity and the smoothness of the lubricating oil can be improved.
According to some embodiments of the present invention, the oil inlet groove extends in an axial direction of the body portion, and the oil outlet groove extends in the axial direction of the body portion. From this, can improve the effect scope of the interior new oil of oil feed tank and the interior hot oil of clearance for in the clearance, the ascending hot oil of axis all can carry out the heat exchange with new oil, thereby can improve heat exchange efficiency, in order to fully cool down to the rotating shaft. In addition, in the clearance, the ascending hot oil of axis direction all can get into out the oil groove, avoids at the rotation of rotation axis in-process, forms out oily blind spot, and the hot oil of some position department can't flow to out the oil groove promptly to can improve the performance of axle bush.
According to some embodiments of the invention, the oil inlet hole is located on a circumferential wall radially outside the bearing shell. Therefore, the oil inlet hole can be conveniently arranged.
According to some embodiments of the present invention, the oil outlet hole penetrates through a sidewall of the oil outlet groove in an axial direction of the rotary shaft. Therefore, hot oil can flow out of the bearing bush from the axis direction of the rotating shaft, and the flowing of the hot oil and the collection effect of the oil outlet groove are facilitated.
According to some embodiments of the invention, the oil outlet hole is plural. From this, can improve oil efficiency to can improve new oil feeding efficiency indirectly, and then can improve the heat exchange efficiency of new oil and hot oil.
According to some embodiments of the present invention, both ends of the oil outlet groove in the axial direction of the rotating shaft are open ends configured as the oil outlet hole. From this, can omit the setting of oil outlet, save the axle bush and set up the process, reduce the manufacturing cost of axle bush.
According to some embodiments of the present invention, there are a plurality of the oil inlet grooves, a plurality of the oil outlet grooves, and a plurality of the oil inlet grooves correspond to a plurality of the oil outlet grooves one to one. Therefore, the heat exchange rate of the new oil and the hot oil can be improved, and the rotating shaft is cooled more effectively.
A plain bearing assembly according to an embodiment of the invention comprises: a bearing shell, the bearing shell being as claimed in any preceding claim.
According to the sliding bearing assembly provided by the embodiment of the invention, the oil inlet grooves and the oil outlet grooves are arranged and distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush can be realized, the new oil flowing from the oil inlet grooves can be fully mixed with the hot oil with high peripheral temperature of the rotating shaft, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft can be effectively reduced. In addition, the mixture of hot oil and new oil and impurities at the periphery of the rotating shaft can flow out from the oil outlet groove, so that circulation can be formed by matching with the oil inlet groove, the cleanliness in the bearing bush can be improved, the lubricating effect between the bearing bush and the rotating shaft can be improved, and the working performance of the sliding bearing assembly can be improved.
The compressor according to the embodiment of the present invention includes: a plain bearing assembly, the plain bearing assembly being as described above.
According to the compressor provided by the embodiment of the invention, the oil inlet grooves and the oil outlet grooves are arranged and distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush can be realized, the new oil flowing from the oil inlet grooves can be fully mixed with the hot oil with high peripheral temperature of the rotating shaft, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft can be effectively reduced. In addition, the mixture of hot oil and new oil and impurities at the periphery of the rotating shaft can flow out of the oil outlet groove, so that circulation can be formed by matching with the oil inlet groove, the cleanliness in the bearing bush can be improved, the lubricating effect between the bearing bush and the rotating shaft can be improved, and the working performance of the compressor can be improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
figure 1 is a schematic structural view of a bearing shell according to an embodiment of the invention;
figure 2 is a schematic structural view of a bearing shell according to an embodiment of the invention;
figure 3 is a schematic structural view of a bearing shell according to an embodiment of the invention;
figure 4 is a schematic structural view of a bearing shell according to an embodiment of the invention.
Reference numerals:
the bearing bush 1, the rotating shaft 2, the gap 3,
the oil inlet structure comprises a body part 10, an oil inlet groove 100, an oil outlet groove 110, an oil inlet hole 101, an oil outlet hole 111 and an oil inlet pipe 120.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "thickness", "upper", "lower", "left", "right", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element 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. Furthermore, 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.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2, according to the bearing shell 1 of the embodiment of the present invention, the bearing shell 1 is sleeved on the rotating shaft 2, and a gap 3 is provided between the outer circumferential wall of the rotating shaft 2 and the bearing shell 1. As shown in fig. 1 to 4, the bearing shell 1 includes a main body 10, the main body 10 is cylindrical, and the main body 10 is fitted around the rotating shaft 2. The body portion 10 has an oil inlet groove 100 and an oil outlet groove 110 spaced apart from the oil inlet groove 100, the oil inlet groove 100 communicating with the gap 3 to supply oil into the gap 3, and the oil outlet groove 110 communicating with the gap 3 to discharge oil in the gap 3. The body portion 10 has an oil inlet hole 101 and an oil outlet hole 111, the oil inlet hole 101 communicating with the oil inlet groove 100, and the oil outlet hole 111 communicating with the oil outlet groove 110.
It can be understood that, as shown in fig. 1 to 4, the bearing shell 1 includes a main body 10, the main body 10 is cylindrical, two ends of the main body 10 are open, the rotating shaft 2 can be inserted into the main body 10, a gap 3 is formed between an outer circumferential wall of the rotating shaft 2 and an inner circumferential wall of the bearing shell 1, a lubricating oil can be filled in the gap 3, the lubricating oil can lubricate the assembly between the inner circumferential wall of the main body 10 and the outer circumferential wall of the rotating shaft 2, the rotating shaft 2 can rotate (e.g., self-transfer) relative to the main body 10, the rotating shaft 2 can release heat during rotation and transfer the heat to the lubricating oil, and the temperature of.
As shown in fig. 1 to 4, an oil inlet hole 101 and an oil inlet groove 100 may be formed in the body portion 10, the oil inlet hole 101 is communicated with the oil inlet groove 100, the oil inlet groove 100 is communicated with the gap 3, the lubricating oil may flow into the oil inlet groove 100 through the oil inlet hole 101 from the outside, the lubricating oil in the oil inlet groove 100 may flow into the gap 3 and exchange heat with the hot oil in the gap 3, the hot oil in the gap 3 may also flow into the oil inlet groove 100 and exchange heat with the lubricating oil in the oil inlet groove 100 and then flow back to the gap 3, in short, the new lubricating oil (new oil for short) flowing from the oil inlet hole 101 may exchange heat with the hot oil in the gap 3, and the mixed oil of the new oil and the hot oil after heat exchange may further exchange heat with the rotating shaft 2, so as to reduce the temperature of the rotating shaft 2 and improve the operating.
As shown in fig. 1 to 4, the body portion 10 may be provided with an oil outlet hole 111 and an oil outlet groove 110, the oil outlet hole 111 is communicated with the oil outlet groove 110, the oil outlet groove 110 is communicated with the gap 3, and the oil outlet groove 110 has a main function of collecting and discharging hot oil. The hot oil can flow into the oil outlet groove 110 from the gap 3 and then flow out of the bearing bush 1 from the oil outlet groove 110 through the oil outlet hole 111. In addition, the impurities between the rotating shaft 2 and the bearing bush 1 can also flow to the oil outlet groove 110, the rotating shaft 2 rotates at a high speed in the bearing bush 1, if the impurities exist in the gap 3, friction damage can be formed on the rotating shaft 2 to influence the performance of the rotating shaft 2, and the impurities can flow to the oil outlet groove 110 along with hot oil or the rotating shaft 2 through the oil outlet groove 110, so that the use performance of the bearing bush 1 can be improved.
According to the bearing bush 1 provided by the embodiment of the invention, the oil inlet groove 100 and the oil outlet groove 110 are arranged, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush 1 can be realized, new oil flowing from the oil inlet groove 100 can be fully mixed with hot oil in the gap 3, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft 2 can be effectively reduced. In addition, hot oil and impurities around the rotating shaft 2 can flow out from the oil outlet groove 110, the oil outlet groove 110 can be matched with the oil inlet groove 100 to form oil supply circulation, so that the rotating shaft 2 can be fully cooled, the cleanliness in the bearing bush 1 can be improved, and the lubricating effect between the bearing bush 1 and the rotating shaft 2 can be further improved.
According to some embodiments of the present invention, the oil feed groove 100 is located downstream of the oil discharge groove 110 in the rotation direction of the rotary shaft 2. For example, as shown in fig. 2, the rotation direction of the rotary shaft 2 is counterclockwise, and the oil inlet groove 100 is located at the left side (left side as viewed in fig. 2) of the oil outlet groove 110. From this, the hot oil of clearance 3 department can be collected in oil groove 110 department and from oil outlet 111 outflow to can provide the space for the confession of new oil, make new oil can be to the sufficient cooling of rotation axis 2, improve the indirect heat exchange efficiency of new oil and rotation axis 2, thereby can improve the working property of axle bush 1. Further, the oil inlet groove 100 is adjacent to the oil outlet groove 110. Therefore, the action path and the action duration of the fresh oil and the hot oil can be prolonged, and the action effect of the fresh oil and the hot oil can be improved.
As shown in fig. 1 to 3, according to some embodiments of the present invention, the oil inlet groove 100 and the oil outlet groove 110 may be distributed along a circumferential direction of the body part 10. In other words, the oil inlet groove 100 and the oil outlet groove 110 may be located on the same ring. Therefore, the oil inlet groove 100 and the oil outlet groove 110 can be conveniently arranged in the axial direction of the rotating shaft 2 in an extending mode, and the effect of new oil and hot oil can be improved.
According to some embodiments of the present invention, a part of the circumferential wall of the body portion 10 may be protruded toward the radial outside of the rotating shaft 2 to configure the oil inlet groove 100 and the oil outlet groove 110. In other words, the oil inlet groove 100 and the oil outlet groove 110 may be formed directly on the body portion 10, and the oil inlet groove 100 may be formed by a portion of the peripheral wall of the body portion 10 protruding toward the radial outside of the rotating shaft 2, i.e., the distance between the portion of the peripheral wall (i.e., the bottom wall of the oil inlet groove 100) and the central axis of the body portion 10 is greater than the radius of the body portion 10. The oil outlet groove 110 may be formed by protruding another part of the peripheral wall of the main body 10 toward the radial outside of the rotating shaft 2, i.e., the distance between the part of the peripheral wall (i.e., the bottom wall of the oil outlet groove 110) and the central axis of the main body 10 is greater than the radius of the main body 10. Therefore, the oil inlet groove 100 and the oil outlet groove 110 are convenient to arrange, and the structures of the oil inlet groove 100 and the oil outlet groove 110 are more stable.
As shown in fig. 1 to 2, according to some embodiments of the present invention, the outer bottom wall surface of the oil inlet groove 100 may be an arc-shaped surface, and the outer bottom wall surface of the oil outlet groove 110 may be an arc-shaped surface. It is understood that the surface of the oil inlet groove 100 protruding from the outer peripheral wall of the main body 10 may be an arc-shaped surface, and the surface of the oil outlet groove 110 protruding from the outer peripheral wall of the main body 10 may also be an arc-shaped surface. Therefore, the inner wall surface of the oil inlet groove 100 and the inner wall surface of the oil outlet groove 110 are conveniently set to be arc-shaped surfaces, and the arc-shaped surfaces are smooth curved surfaces, so that lubricating oil (such as hot oil and fresh oil) can flow conveniently, and the fluidity and the smoothness of the lubricating oil can be improved.
As shown in fig. 1, 3 and 4, according to some embodiments of the present invention, the oil inlet groove 100 may extend in an axial direction of the body part 10, and the oil outlet groove 110 may extend in the axial direction of the body part 10. For example, the oil inlet groove 100 may be formed in a long condition, the longitudinal direction of the oil inlet groove 100 may extend along the axial direction of the body portion 10, the oil outlet groove 110 may be formed in a long condition, and the longitudinal direction of the oil outlet groove 110 may extend along the axial direction of the body portion 10. From this, can improve the effect scope of the interior new oil of oil feed tank 100 and the interior hot oil of clearance 3 for in the clearance 3, the ascending hot oil of axis direction all can carry out the heat exchange with new oil, thereby can improve heat exchange efficiency, in order to can fully cool down to rotating shaft 2. In addition, hot oil in the gap 3 and in the axial direction can enter the oil outlet groove 110, so that an oil outlet blind spot is prevented from being formed in the rotation process of the rotating shaft 2, namely, the hot oil at a part of the position cannot flow to the oil outlet groove 110, and the performance of the bearing bush 1 can be improved.
As shown in fig. 1 to 4, according to some embodiments of the present invention, the oil inlet hole 101 is located on a circumferential wall radially outside the bearing shell 1. It is understood that an oil inlet hole 101 may be provided on a circumferential wall of a radially outer side of the bearing bush 1, and the oil inlet hole 101 penetrates the circumferential wall of the bearing bush 1 to communicate with the oil inlet groove 100. For example, a part of the peripheral wall of the main body 10 protrudes outward in the radial direction of the bearing bush 1 to form the oil inlet groove 100, and a through hole may be opened on the part of the peripheral wall to form the oil inlet hole 101. Therefore, the oil inlet hole 101 can be conveniently arranged. Further, the oil inlet hole 101 is located near the center of the oil inlet groove 100. Therefore, the new oil flowing from the oil inlet hole 101 can uniformly and omnidirectionally flow into the oil inlet groove 100. Further, an oil inlet pipe 120 may be provided on the bearing shell 1, one end of the oil inlet pipe 120 communicates with the oil inlet hole 101, and the lubricating oil may flow from the oil inlet pipe 120 to the oil inlet hole 101. Therefore, external lubricating oil can be conveniently introduced into the oil inlet hole 101.
According to some embodiments of the present invention, the oil outlet hole 111 may penetrate through a sidewall of the oil groove 110 in the axial direction of the rotary shaft 2. It can be understood that the oil outlet holes 111 and the oil outlet groove 110 are distributed along the axial direction of the rotating shaft 2, the oil outlet holes 111 are located on the oil outlet groove 110, and the oil outlet holes 111 penetrate through the sidewall of the oil outlet groove 110 to achieve communication between the oil outlet holes 111 and the oil outlet groove 110. Therefore, the hot oil can flow out of the bearing bush 1 from the axial direction of the rotating shaft 2, and the flowing of the hot oil and the collecting function of the oil outlet groove 110 are facilitated.
As shown in fig. 1, 3 and 4, the oil outlet hole 111 may be plural according to some embodiments of the present invention. For example, the oil outlet holes 111 may be two, and the oil outlet holes 111 may be located at both sides of the oil outlet groove 110 in the axial direction of the body part 10. From this, can improve oil efficiency to can improve new oil feeding efficiency indirectly, and then can improve the heat exchange efficiency of new oil and hot oil.
According to some embodiments of the present invention, both ends of the oil outlet groove 110 in the axial direction of the rotary shaft 2 are open ends configured as the oil outlet holes 111. In other words, the oil outlet groove 110 may be formed with only a bottom wall, and the side walls of the oil outlet groove 110 at both ends of the bottom wall may be opened, and the hot oil in the oil outlet groove 110 may flow out from the opened portions. Therefore, the oil outlet hole 111 can be omitted, the process of arranging the bearing bush 1 is saved, and the production cost of the bearing bush 1 is reduced.
According to some embodiments of the present invention, there may be a plurality of oil inlets 100, a plurality of oil outlets 110, and a plurality of oil inlets 100 and a plurality of oil outlets 110 correspond to one another. It is understood that a plurality of oil inlet grooves 100 may be provided on the body portion 10, and each oil inlet groove 100 has an oil outlet groove 110 corresponding to it. Therefore, the heat exchange rate of the fresh oil and the hot oil can be improved, and the rotating shaft 2 is cooled more effectively. Further, the oil inlet grooves 100 may be uniformly distributed or distributed in an array at unequal intervals along the circumferential direction of the bearing shell 1.
A plain bearing assembly according to an embodiment of the invention comprises a bearing shell, the bearing shell being a bearing shell 1 as described above.
According to the sliding bearing assembly provided by the embodiment of the invention, the oil inlet groove 100 and the oil outlet groove 110 are arranged, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush 1 can be realized, new oil flowing from the oil inlet groove 100 can be fully mixed with hot oil with high peripheral temperature of the rotating shaft 2, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft 2 can be effectively reduced. In addition, the mixture of hot oil and new oil and impurities around the rotating shaft 2 can flow out from the oil outlet groove 110, so that the oil outlet groove 100 can be matched with the oil inlet groove to form circulation, the cleanliness in the bearing bush 1 can be improved, the lubrication effect between the bearing bush 1 and the rotating shaft 2 can be improved, and the working performance of the sliding bearing assembly can be improved.
It should be noted that the bearing bush 1 can be used independently, and can also be used in the case where the radial bearing and the thrust bearing are coupled to a single bearing body.
A compressor according to an embodiment of the present invention includes a plain bearing assembly, which is the plain bearing assembly as described above.
According to the compressor provided by the embodiment of the invention, the oil inlet groove 100 and the oil outlet groove 110 are arranged, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush 1 can be realized, new oil flowing from the oil inlet groove 100 can be fully mixed with hot oil with high peripheral temperature of the rotating shaft 2, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft 2 can be effectively reduced. In addition, the mixture of hot oil and new oil and impurities around the rotating shaft 2 can flow out from the oil outlet groove 110, so that the mixture can cooperate with the oil inlet groove 100 to form circulation, the cleanliness in the bearing bush 1 can be improved, the lubrication effect between the bearing bush 1 and the rotating shaft 2 can be improved, and the working performance of the compressor can be improved.
A bearing shell 1 according to an embodiment of the invention will be described in detail below with reference to figures 1 to 4. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting.
As shown in fig. 1 to 4, the bearing shell 1 includes a main body 10, the main body 10 is cylindrical, the main body 10 can be sleeved on the rotating shaft 2, and a gap 3 is provided between an outer circumferential wall of the rotating shaft 2 and an inner circumferential wall of the main body 10. An oil inlet groove 100 and an oil outlet groove 110 are formed on the outer peripheral wall of the body 10, the oil inlet groove 100 and the oil outlet groove 110 are both fastened to the outer peripheral wall of the body 10, the oil inlet groove 100 is opened toward the body 10, and the end surface of the opened side of the oil inlet groove 100 is connected to the outer peripheral wall of the body 10. The oil outlet groove 110 is open to the main body 10, and an open end surface of the oil outlet groove 110 is connected to the outer peripheral wall of the main body 10. The oil inlet groove 100 and the oil outlet groove 110 are distributed along the circumferential direction of the body portion 10, and the oil inlet groove 100 is spaced apart from the oil outlet groove 110. The oil inlet groove 100 penetrates the outer peripheral wall of the body 10, the oil inlet groove 100 communicates with the gap 3, the oil outlet groove 110 penetrates the outer peripheral wall of the body 10, and the oil outlet groove 110 communicates with the gap 3. The oil feed groove 100 is located downstream of the oil discharge groove 110 in the rotation direction of the rotary shaft 2, and the oil feed groove 100 is adjacent to the oil discharge groove 110. The oil inlet groove 100 extends in the axial direction of the body 10, and the oil outlet groove 110 extends in the axial direction of the body 10. The outer bottom wall surface of the oil inlet groove 100 is an arc-shaped surface, an oil inlet hole 101 is formed in the arc-shaped surface, the oil inlet hole 101 penetrates through the bottom wall of the oil inlet groove 100, and the oil inlet hole 101 is communicated with the oil inlet groove 100. The outer bottom wall surface of the oil outlet groove 110 is an arc-shaped surface, two side wall surfaces of the oil outlet groove 110 are respectively provided with an oil outlet hole 111, each oil outlet hole 111 can penetrate through the corresponding side wall surface, and the oil outlet holes 111 are communicated with the oil outlet groove 110.
According to the bearing bush 1 provided by the embodiment of the invention, the oil inlet groove 100 and the oil outlet groove 110 are arranged, and the oil inlet groove 100 and the oil outlet groove 110 are distributed at intervals, so that the relative independence of oil inlet and oil outlet of the bearing bush 1 can be realized, new oil flowing from the oil inlet groove 100 can be fully mixed with hot oil in the gap 3, the new oil can be fully subjected to heat exchange with the hot oil, and the temperature of the rotating shaft 2 can be effectively reduced. In addition, hot oil and impurities around the rotating shaft 2 can flow out from the oil outlet groove 110, so that oil supply circulation can be formed by matching with the oil inlet groove 100, the rotating shaft 2 can be fully cooled, the cleanliness in the bearing bush 1 can be improved, and the lubricating effect between the bearing bush 1 and the rotating shaft 2 can be improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A bearing shell adapted to fit over a rotatable shaft, the rotatable shaft having a gap between an outer peripheral wall thereof and the bearing shell, the bearing shell comprising:
the main body part is cylindrical and sleeved on the rotating shaft, the main body part is provided with an oil inlet groove and an oil outlet groove spaced from the oil inlet groove, the oil inlet groove is communicated with the gap to supply oil into the gap, the oil outlet groove is communicated with the gap to discharge the oil in the gap, the main body part is provided with an oil inlet hole and an oil outlet hole, the oil inlet hole is communicated with the oil inlet groove, and the oil outlet hole is communicated with the oil outlet groove;
the oil inlet groove is positioned at the downstream of the oil outlet groove in the rotating direction of the rotating shaft; the oil inlet groove extends along the axial direction of the body part, and the oil outlet groove extends along the axial direction of the body part; a part of the peripheral wall of the body portion is protruded toward the radial outside of the rotary shaft to construct the oil inlet groove and the oil outlet groove;
the outer bottom wall surface of the oil inlet groove is an arc-shaped surface, and the outer bottom wall surface of the oil outlet groove is an arc-shaped surface.
2. Bearing shell according to claim 1, wherein the oil inlet groove and the oil outlet groove are distributed along the circumferential direction of the body part.
3. Bearing shell according to claim 1, wherein the oil inlet is located on a circumferential wall radially outside the bearing shell.
4. The bearing shell according to claim 1, wherein the oil outlet hole penetrates through a side wall of the oil outlet groove in an axial direction of the rotary shaft.
5. The bearing shell according to claim 1, wherein the oil outlet hole is provided in plurality.
6. The bearing shell according to claim 1, wherein both ends of the oil outlet groove in the axial direction of the rotary shaft are open ends, and the open ends are configured as the oil outlet holes.
7. The bearing shell according to claim 1, wherein there are a plurality of oil inlet grooves, and a plurality of oil outlet grooves, and a plurality of oil inlet grooves correspond to a plurality of oil outlet grooves one to one.
8. A plain bearing assembly, comprising:
a bearing shell according to any of claims 1 to 7.
9. A compressor, comprising:
a plain bearing assembly, the plain bearing assembly according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711346979.8A CN108119548B (en) | 2017-12-15 | 2017-12-15 | Bearing bush, sliding bearing assembly with bearing bush and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711346979.8A CN108119548B (en) | 2017-12-15 | 2017-12-15 | Bearing bush, sliding bearing assembly with bearing bush and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119548A CN108119548A (en) | 2018-06-05 |
| CN108119548B true CN108119548B (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711346979.8A Active CN108119548B (en) | 2017-12-15 | 2017-12-15 | Bearing bush, sliding bearing assembly with bearing bush and compressor |
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| CN (1) | CN108119548B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233752A (en) * | 2021-12-07 | 2022-03-25 | 昆山旭义富机械设备有限公司 | Pass loose copper sheathing for electricity wheel convenient to take out |
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| CN201627826U (en) * | 2010-01-27 | 2010-11-10 | 宁波轴瓦厂 | Automobile brake air compressor bearing bush with eccentric oil groove |
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| Publication number | Publication date |
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| CN108119548A (en) | 2018-06-05 |
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