CN110714987A - Radial oil collecting ring, and oil supply and lubrication device and method under ring - Google Patents
Radial oil collecting ring, and oil supply and lubrication device and method under ring Download PDFInfo
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- CN110714987A CN110714987A CN201910892991.1A CN201910892991A CN110714987A CN 110714987 A CN110714987 A CN 110714987A CN 201910892991 A CN201910892991 A CN 201910892991A CN 110714987 A CN110714987 A CN 110714987A
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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
- F16C33/664—Retaining the liquid in or near the bearing
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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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- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a radial oil collecting ring, an oil supply and lubrication device under the ring and a method. The oil supply lubricating device under the ring comprises a radial oil collecting ring, a main shaft, a bearing sleeved outside the main shaft, a bearing seat sleeved outside the bearing and an oil supply nozzle arranged on the bearing seat and connected with an oil supply way; the oil supply nozzle penetrates into the bearing seat and is aligned with the oil receiving groove; the radial oil collecting ring is sleeved on the main shaft and can synchronously rotate with the main shaft, and one end provided with the oil delivery chute is tightly attached to the bearing. The invention can greatly improve the oil recovery efficiency, the oil recovery amount can meet the bearing lubrication and cooling requirements under the conditions of high speed, high temperature and heavy load, and the long-time stable work of the bearing is ensured.
Description
Technical Field
The invention belongs to the field of bearing oil supply lubrication, and relates to a radial oil collecting ring, an oil supply lubrication device under the ring and a method.
Background
The rolling bearing is a key element in high-speed rotating machinery, the spin speed of the rolling element is continuously increased along with the increase of DN value, the bearing can be out of work and damaged due to the increase of friction heat generation, the bearing is also required to work under heavy load condition, and in order to ensure that the high-speed rolling bearing can work reliably in a long time range, the high-speed rolling bearing must be reasonably lubricated and cooled. Along with the increase of the rotating speed of the main shaft, lubricating oil is difficult to enter the inside of the bearing due to the action of wind resistance and centrifugal force in the traditional jet lubrication, the lubricating efficiency of the bearing is low, and the lubrication and cooling of the bearing are not favorable.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a radial oil collecting ring, an oil supply lubricating device under the ring and a method thereof, and solves the problems of low lubricating efficiency, poor cooling effect and the like of the existing bearing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a radial oil ring, comprising integrally formed: the oil collecting device comprises a cylindrical wall, a first annular retaining wall which is arranged at the end part of the cylindrical wall and is coaxial with the cylindrical wall, a second annular retaining wall which is parallel and opposite to the first annular retaining wall, and a plurality of oil collecting blades which are connected between the first annular retaining wall and the second annular retaining wall;
the planes of the first annular retaining wall and the second annular retaining wall are perpendicular to the central axis of the cylindrical wall, and the first annular retaining wall, the second annular retaining wall and the oil collecting blades jointly enclose an oil collecting groove;
one end of each oil receiving blade corresponding to each oil receiving groove is a blade tip, and the other end of each oil receiving blade is a blade root; the depth of the oil receiving groove from the blade tip to the blade root is gradually increased, and a through oil receiving inlet is formed in the blade root;
the inner wall of the cylindrical wall is provided with a front oil collecting ring groove along the circumferential direction of the cylindrical wall and a plurality of oil conveying chutes which are uniformly distributed along the circumferential direction of the cylindrical wall and are communicated with the front oil collecting ring groove; the oil collecting blade and the oil delivery chute are respectively positioned on two sides of the front oil collecting ring groove.
The invention also comprises the following technical characteristics:
specifically, the inclination angles of the plurality of oil delivery chutes with respect to the axial direction of the cylindrical wall are the same, and the inclination directions of the plurality of oil delivery chutes are the same.
Specifically, the inner wall of the oil receiving blade positioned on one side of the oil receiving inlet is an inclined plane, four edges are arranged at the inner opening of the oil receiving inlet, three edges can be tightly attached to the main shaft to form an oil receiving channel with the main shaft, the other edge is the root of the inclined plane, and the edge is not in contact with the main shaft to form an oil outlet of the oil receiving channel; the lubricating oil enters the inner wall of the cylindrical wall along the oil outlet, flows into the front oil collecting ring groove and flows to each oil conveying chute.
Specifically, the oil outlet is provided with a blade protrusion to prevent lubricating oil entering the front oil collecting ring groove from being thrown to the oil collecting channel.
Specifically, the inclination angle of the oil delivery chute relative to the axis of the main shaft is 5-20 degrees.
The invention also provides an under-ring oil supply lubricating device, which comprises the radial oil collecting ring and further comprises: the main shaft, a bearing sleeved outside the main shaft, a bearing seat sleeved outside the bearing and an oil supply nozzle arranged on the bearing seat and connected with an oil supply way; the oil supply nozzle penetrates into the bearing seat and is aligned with the oil receiving groove;
the radial oil collecting ring is sleeved on the main shaft and can synchronously rotate with the main shaft, and one end provided with the oil delivery chute is tightly attached to the bearing.
Specifically, the bearing includes a bearing inner ring in contact with the main shaft, a bearing outer ring, and rolling elements held by a cage and disposed between the bearing inner ring and the bearing outer ring.
Specifically, a plurality of bearing inner ring oil conveying grooves are formed in the inner wall of the bearing inner ring, and are distributed along the circumferential direction of the bearing inner ring;
the inner wall of the bearing inner ring is also provided with a rear oil collecting ring groove which is close to the oil conveying groove of the bearing inner ring along the circumferential direction of the bearing inner ring, and the rear oil collecting ring groove can be aligned and communicated with the oil conveying chute; the rear oil collecting ring groove can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the circulation capacity of some bearing inner ring oil transmission grooves is reduced, and the existence of the rear oil collecting ring groove allows the radial oil collecting ring and the bearing inner ring to have relative circumferential displacement;
the bearing inner ring oil conveying groove is provided with a radial oil hole penetrating to the inside of the bearing, and lubricating oil is thrown into the inside of the bearing under the action of centrifugal force at the radial oil hole to fully cool and lubricate the bearing.
Specifically, be equipped with annular oil dam between bearing inner ring oil groove and the back oil collecting ring groove, the lubricating oil in the preceding oil collecting ring inslot is carried to back oil collecting ring inslot along the oil delivery chute, because oil delivery chute structure and oil delivery chute flow area reduce gradually, the lubricating oil velocity of flow increases, the even oil conveying groove that gets into in back oil collecting ring inslot accumulation a certain amount lubricating oil flow behind the oil dam, flow to radial oilhole department inside the lubricating oil is thrown into the bearing because the centrifugal force effect that high-speed rotation produced down, lubricate bearing inner and outer ring, holder and rolling element.
The invention also provides an under-ring oil supply and lubrication method, which is realized by adopting the device and specifically comprises the following steps:
the lubricating oil sprayed by the oil supply nozzle is sprayed to an oil collecting groove of the radial oil collecting ring through an air field in a bearing cavity, the lubricating oil jet impacts an oil collecting blade to cause partial lubricating oil to be reflected and splashed, the lubricating oil entering an oil collecting channel of the radial oil collecting ring through an oil collecting inlet flows along the inner surface of the oil collecting blade, and the lubricating oil flows through a blade bulge on the oil collecting blade and then enters a front oil collecting ring groove;
the blade protrusions on the oil collecting blades can prevent lubricating oil entering the front oil collecting ring groove from being thrown out of the oil collecting channel, the lubricating oil in the front oil collecting ring groove is conveyed into the rear oil collecting ring groove along the oil conveying chute, the flow speed of the lubricating oil is increased due to the inclined arrangement form of the oil conveying chute and the gradual reduction of the flow area of the oil conveying chute, a certain amount of lubricating oil accumulated in the rear oil collecting ring groove uniformly enters an oil conveying groove of an inner ring of a bearing after flowing through an oil baffle dam, and the lubricating oil flowing to a radial oil hole is thrown into the inner part of the bearing under the action of centrifugal force generated by high-speed rotation, so that the inner ring of the bearing, the outer ring of the bearing, the retainer and the rolling body are lubricated;
the oil collecting ring groove can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the circulation capacity of some oil conveying chutes is reduced, and the existence of the rear oil collecting ring groove allows the radial oil collecting ring and the bearing inner ring to have relative circumferential displacement; the lubricating oil entering the radial oil collecting ring is conveyed to the bearing inner ring through the oil conveying part and can completely enter the bearing, and the lubricating mode can improve the lubricating and cooling effects of the bearing and prolong the service life of the bearing.
Compared with the prior art, the invention has the beneficial technical effects that:
the effective lubricating oil quantity supplied into the bearing by the lubricating mode under the condition of the same lubricating oil flow is more than that supplied into the bearing by the traditional injection lubrication, so that the lubricating and cooling effects of the high-speed rolling bearing can be improved.
In the invention, the lubricating oil ejected from the oil supply nozzle flows through an air field in the bearing cavity and is ejected to the radial oil collecting ring, the lubricating oil jet impacts the oil collecting blade to cause partial lubricating oil to be reflected and splashed, the lubricating oil entering the oil collecting channel of the radial oil collecting ring flows along the surface of the oil collecting blade, flows through the blade bulge on the oil collecting blade and then enters the front oil collecting ring groove, the blade bulge on the oil collecting blade can prevent the lubricating oil entering the front oil collecting ring groove from being thrown out of the oil collecting channel, the lubricating oil in the front oil collecting ring groove is conveyed to the rear oil collecting ring groove along the oil conveying chute, the lubricating oil is thrown into the bearing under the action of centrifugal force generated by high-speed rotation when the lubricating oil flows to the radial oil hole because the spiral form of the oil conveying chute and the flow area of the oil conveying chute are gradually reduced and the flow velocity of the lubricating oil is increased, a certain amount of the lubricating oil accumulated in the rear oil collecting ring groove uniformly enters the axial bearing inner ring oil conveying groove, and lubricating the inner ring, the outer ring, the retainer and the rolling bodies of the bearing. The rear oil collecting ring groove can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the flow capacity of some oil conveying grooves is reduced, and the existence of the rear oil collecting ring groove allows the radial oil collecting ring and the bearing inner ring to have relative circumferential displacement. The lubricating oil entering the radial oil collecting ring is conveyed to the bearing inner ring through the oil conveying part and can completely enter the bearing, the lubricating efficiency of the bearing can be improved under the condition that the oil supply nozzles have the same lubricating oil flow, the lubricating and cooling effects of the bearing are improved, and the service life of the bearing is prolonged.
Under the condition of high speed (DN >2.5 x 106mm r/min), the lubricating oil under the ring is needed to be supplied to the bearing, the lubricating oil under the ring is sprayed out by an oil supply nozzle, the oil is collected by an oil collecting ring (an axial oil collecting ring or a radial oil collecting ring) which rotates synchronously with the main shaft, the oil is conveyed to the inner ring of the bearing through an oil conveying part, the oil is thrown into the bearing by the centrifugal force generated by the high-speed rotation of the main bearing through a radial oil hole on the inner ring of the bearing, and the oil entering the oil collecting ring can be completely supplied to the bearing as long as the rotating speed of the bearing is not lower than a certain value (DN is 0.3 x 106mm r/min).
Drawings
FIG. 1 is a schematic view of the overall construction of the radial oil slinger of the present invention;
FIG. 2 is a cross-sectional view of the radial oil slinger of the present invention;
FIG. 3 is a partial sectional view of the entire structure of the under-ring oil supply lubrication device of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a cross-sectional view of a bearing of the present invention;
fig. 6 is an exploded view of the entire structure of the under-ring oil supply lubrication device of the present invention.
The reference numerals in the figures denote: 10-radial oil collecting ring, 20-main shaft, 30-bearing, 40-bearing seat and 50-oil supply nozzle;
11-cylindrical wall, 12-first annular retaining wall, 13-second annular retaining wall, 14-oil collecting blade, 15-oil collecting groove, 16-oil collecting inlet, 17-oil collecting channel and 18-blade bulge;
111-front oil collecting ring groove, 112-oil conveying chute; 141-blade tip, 142-blade root;
31-bearing inner ring, 32-bearing outer ring, 33-cage, 34-rolling body;
311-bearing inner ring oil transmission groove, 312-rear oil collecting ring groove, 313-radial oil hole and 314-oil retaining dam.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
as shown in fig. 1, 2 and 3, the present embodiment provides a radial oil-receiving ring including integrally formed: the oil collecting device comprises a cylindrical wall 11, a first annular baffle wall 12 which is arranged at the end part of the cylindrical wall 11 and is coaxial with the cylindrical wall 11, a second annular baffle wall 13 which is opposite to the first annular baffle wall 12 in parallel, and a plurality of oil collecting blades 14 which are connected between the first annular baffle wall 12 and the second annular baffle wall 13; the planes of the first annular retaining wall 12 and the second annular retaining wall 13 are perpendicular to the central axis of the cylindrical wall 11, and the first annular retaining wall 12, the second annular retaining wall 13 and the oil collecting vanes 14 jointly enclose an oil collecting groove 15; one end of each oil receiving blade 14 corresponding to each oil receiving groove 15 is a blade tip 141, and the other end is a blade root 142; the groove depth of the oil receiving groove 15 from the blade tip 141 to the blade root 142 is gradually increased, and the blade root 142 is provided with a through oil receiving inlet 16; the inner wall of the cylindrical wall 11 is provided with a front oil collecting ring groove 111 along the circumferential direction of the cylindrical wall 11 and a plurality of oil conveying chutes 112 which are uniformly distributed along the circumferential direction of the cylindrical wall 11 and are communicated with the front oil collecting ring groove 111; the oil collecting blade 14 and the oil delivery chute 112 are respectively positioned at two sides of the front oil collecting ring groove 111.
The plurality of oil delivery chutes 112 are inclined at the same angle with respect to the axial direction of the cylindrical wall 11, and the inclination directions of the plurality of oil delivery chutes 112 are the same.
The inner wall of the oil collecting blade 14 positioned on one side of the oil collecting inlet 16 is an inclined plane, four edges are arranged at the inner opening of the oil collecting inlet 16, wherein three edges can be tightly attached to the main shaft to form an oil collecting channel 17 with the main shaft, the other edge is the root of the inclined plane, and the edge is not in contact with the main shaft to form an oil outlet of the oil collecting channel 17; the oil enters the inner wall of the cylindrical wall 11 along the outlet port and flows into the front oil collecting ring groove 111 to each oil delivery chute 112.
The oil outlet is provided with a vane projection 18 to prevent the lubricating oil entering the front oil collecting ring groove 111 from being thrown to the oil collecting channel 17.
The inclination angle of the oil delivery chute 112 relative to the axis of the main shaft is 5-20 deg.
Preferably, the radius of the oil delivery chute 112 is gradually reduced from front to back, and due to the inclined form of the oil delivery chute and the gradually reduced flow area of the oil delivery chute, the flow rate of the lubricating oil is increased, a certain amount of lubricating oil accumulated in the rear oil collecting ring groove flows through the oil retaining dam and then uniformly enters the oil delivery grooves of the inner rings of the bearings in all axial directions, and the lubricating oil flowing to the radial oil holes is thrown into the inner parts of the bearings under the action of centrifugal force generated by high-speed rotation, so that the inner rings, the outer rings, the retainer and the rolling bodies of the bearings are lubricated.
Example 2:
as shown in fig. 3 to 6, the present embodiment provides an under-ring oil supply lubrication device, including the radial oil-collecting ring 10 in embodiment 1, further including: the main shaft 20, the bearing 30 sleeved outside the main shaft 20, the bearing seat 40 sleeved outside the bearing 30 and the oil supply nozzle 50 which is arranged on the bearing seat 40 and is connected with an oil supply way; the oil supply nozzle 50 penetrates into the bearing seat 40 and is aligned with the oil receiving groove 15; the radial oil collecting ring 10 is sleeved on the main shaft 20 and can rotate synchronously with the main shaft 20, and one end provided with an oil delivery chute 112 is tightly attached to the bearing 30.
The bearing 30 includes a bearing inner ring 31 that contacts the main shaft 20, a bearing outer ring 32, and rolling elements 34 that are held by a cage 33 and provided between the bearing inner ring 31 and the bearing outer ring 32.
A plurality of bearing inner ring oil conveying grooves 311 are formed in the inner wall of the bearing inner ring 31 and axially along the bearing inner ring 31, and the plurality of bearing inner ring oil conveying grooves 311 are circumferentially arranged along the bearing inner ring 31; the inner wall of the bearing inner ring 31 is also provided with a rear oil collecting ring groove 312 which is close to the bearing inner ring oil conveying groove 311 along the circumferential direction of the bearing inner ring 31, and the rear oil collecting ring groove 312 can be aligned and communicated with the oil conveying chute 112; the rear oil collecting ring groove 312 can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the circulation capacity of some bearing inner ring oil transmission grooves 311 is reduced, and the existence of the rear oil collecting ring groove 312 allows the radial oil collecting ring 10 and the bearing inner ring 31 to have relative circumferential displacement; the bearing inner ring oil feed groove 311 is provided with a radial oil hole 313 penetrating into the bearing 30, and the lubricating oil is thrown into the bearing 30 by centrifugal force at the radial oil hole 313 to sufficiently cool and lubricate the bearing 30. Specifically, in this embodiment, the bearing inner ring oil transfer grooves 311 on the bearing inner ring have different lengths, each bearing inner ring oil transfer groove 311 is communicated with the rear oil collecting ring groove, each bearing inner ring oil transfer groove 311 is communicated with one radial oil hole, and the bearing inner ring oil transfer grooves 311 and the radial oil holes are uniformly distributed on the bearing inner ring along the circumferential direction.
An annular oil retaining dam 314 is arranged between the bearing inner ring oil conveying groove 311 and the rear oil collecting ring groove 312, lubricating oil in the front oil collecting ring groove 111 is conveyed into the rear oil collecting ring groove 312 along the oil conveying chute 112, the flow velocity of the lubricating oil is increased due to the fact that the flow area of the oil conveying chute 112 and the flow area of the oil conveying chute 112 are gradually reduced, a certain amount of lubricating oil accumulated in the rear oil collecting ring groove 312 uniformly enters the bearing inner ring oil conveying grooves 311 after flowing through the oil retaining dam 314, the lubricating oil flowing to the radial oil hole 313 is thrown into the bearing 30 under the action of centrifugal force generated by high-speed rotation, and the bearing inner ring 31, the bearing outer ring 32, the retainer 33 and the rolling body 34 are lubricated.
Example 3:
the embodiment provides a method for supplying oil and lubricating under a ring, which is implemented by adopting the device in the embodiment 2 and specifically comprises the following steps:
the lubricating oil sprayed by the oil supply nozzle is sprayed to an oil collecting groove of the radial oil collecting ring through an air field in a bearing cavity, the lubricating oil jet impacts an oil collecting blade to cause partial lubricating oil to be reflected and splashed, the lubricating oil entering an oil collecting channel of the radial oil collecting ring through an oil collecting inlet flows along the inner surface of the oil collecting blade, and the lubricating oil flows through a blade bulge on the oil collecting blade and then enters a front oil collecting ring groove;
the blade protrusions on the oil collecting blades can prevent lubricating oil entering the front oil collecting ring groove from being thrown out of the oil collecting channel, the lubricating oil in the front oil collecting ring groove is conveyed into the rear oil collecting ring groove along the oil conveying chute, the flow speed of the lubricating oil is increased due to the inclined arrangement form of the oil conveying chute and the gradual reduction of the flow area of the oil conveying chute, a certain amount of lubricating oil accumulated in the rear oil collecting ring groove uniformly enters an oil conveying groove of an inner ring of a bearing after flowing through an oil baffle dam, and the lubricating oil flowing to a radial oil hole is thrown into the inner part of the bearing under the action of centrifugal force generated by high-speed rotation, so that the inner ring of the bearing, the outer ring of the bearing, the retainer and the rolling body are lubricated;
the oil collecting ring groove can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the circulation capacity of some oil conveying chutes is reduced, and the existence of the rear oil collecting ring groove allows the radial oil collecting ring and the bearing inner ring to have relative circumferential displacement; the lubricating oil entering the radial oil collecting ring is conveyed to the bearing inner ring through the oil conveying part and can completely enter the bearing, and the lubricating mode can improve the lubricating and cooling effects of the bearing and prolong the service life of the bearing.
Claims (10)
1. A radial oil-receiving ring, comprising integrally formed: the oil collecting device comprises a cylindrical wall (11), a first annular baffle wall (12) which is arranged at the end part of the cylindrical wall (11) and is coaxial with the cylindrical wall (11), a second annular baffle wall (13) which is parallel and opposite to the first annular baffle wall (12), and a plurality of oil collecting blades (14) which are connected between the first annular baffle wall (12) and the second annular baffle wall (13);
the planes of the first annular retaining wall (12) and the second annular retaining wall (13) are perpendicular to the central axis of the cylindrical wall (11), and the first annular retaining wall (12), the second annular retaining wall (13) and the oil collecting blades (14) jointly enclose an oil collecting groove (15);
one end of each oil receiving blade (14) corresponding to each oil receiving groove (15) is a blade tip (141), and the other end of each oil receiving blade is a blade root (142); the groove depth of the oil receiving groove (15) from the blade tip (141) to the blade root (142) is gradually increased, and a through oil receiving inlet (16) is formed in the blade root (142);
the inner wall of the cylindrical wall (11) is provided with a front oil collecting ring groove (111) along the circumferential direction of the cylindrical wall (11) and a plurality of oil conveying chutes (112) which are uniformly distributed along the circumferential direction of the cylindrical wall (11) and communicated with the front oil collecting ring groove (111); the oil collecting blade (14) and the oil delivery chute (112) are respectively positioned at two sides of the front oil collecting ring groove (111).
2. The radial oil control ring as set forth in claim 1, characterized in that the inclination angles of the plurality of oil delivery chutes (112) with respect to the axial direction of the cylindrical wall (11) are the same, and the inclination directions of the plurality of oil delivery chutes (112) are the same.
3. The radial oil collecting ring as set forth in claim 2, characterized in that the inner wall of the oil collecting blade (14) on one side of the oil collecting inlet (16) is a bevel, and the inner opening of the oil collecting inlet (16) is provided with four edges, wherein three edges can be tightly attached to the main shaft to form an oil collecting channel (17) with the main shaft, and the other edge is the root of the bevel and is not in contact with the main shaft to form an oil outlet of the oil collecting channel (17); the lubricating oil enters the inner wall of the cylindrical wall (11) along the oil outlet and flows into the front oil collecting ring groove (111) and flows to each oil conveying chute (112).
4. The radial oil collecting ring according to claim 3, wherein the oil outlet is provided with a vane projection (18) to prevent oil entering the front oil collecting ring groove (111) from being thrown to the oil collecting passage (17).
5. The radial oil control ring according to claim 4, wherein the inclination angle of the oil delivery chute (112) with respect to the main shaft axis is 5 ° to 20 °.
6. An under-ring oil supply lubrication device, comprising the radial oil-receiving ring (10) according to any one of claims 1 to 5, and further comprising: the device comprises a main shaft (20), a bearing (30) sleeved outside the main shaft (20), a bearing seat (40) sleeved outside the bearing (30) and an oil supply nozzle (50) which is arranged on the bearing seat (40) and connected with an oil supply way; the oil supply nozzle (50) penetrates into the bearing seat (40) and is aligned with the oil receiving groove (15);
the radial oil collecting ring (10) is sleeved on the main shaft (20) and can synchronously rotate with the main shaft (20), and one end provided with an oil delivery chute (112) is tightly attached to the bearing (30).
7. The oil supply lubrication device under ring as claimed in claim 6, characterized in that the bearing (30) comprises a bearing inner ring (31) in contact with the main shaft (20), a bearing outer ring (32), and rolling bodies (34) held by a cage (33) provided between the bearing inner ring (31) and the bearing outer ring (32).
8. The oil supply and lubrication apparatus under a ring as claimed in claim 7, wherein the inner wall of the bearing inner ring (31) is provided with a plurality of bearing inner ring oil feed grooves (311) each along the axial direction of the bearing inner ring (31), and the plurality of bearing inner ring oil feed grooves (311) are arranged along the circumferential direction of the bearing inner ring (31);
the inner wall of the bearing inner ring (31) is also provided with a rear oil collecting ring groove (312) which is close to the bearing inner ring oil conveying groove (311) along the circumferential direction of the bearing inner ring (31), and the rear oil collecting ring groove (312) can be aligned to and communicated with the oil conveying chute (112); the rear oil collecting ring groove (312) can communicate the lubricating oil along the circumferential direction, so that the lubricating oil can still flow backwards after the circulation capacity of some bearing inner ring oil transmission grooves (311) is reduced, and meanwhile, the existence of the rear oil collecting ring groove (312) allows the radial oil collecting ring (10) and the bearing inner ring (31) to have relative circumferential displacement;
the bearing inner ring oil transmission groove (311) is provided with a radial oil hole (313) penetrating into the bearing (30), and lubricating oil is thrown into the bearing (30) under the action of centrifugal force at the radial oil hole (313) to fully cool and lubricate the bearing (30).
9. The oil supply and lubrication device under ring as claimed in claim 8, wherein an annular oil dam (314) is provided between the bearing inner ring oil delivery groove (311) and the rear oil collection ring groove (312), the oil in the front oil collection ring groove (111) is delivered into the rear oil collection ring groove (312) along the oil delivery chute (112), the flow rate of the oil increases as the flow area of the oil delivery chute (112) and the oil delivery chute (112) gradually decreases, a certain amount of oil accumulated in the rear oil collection ring groove (312) flows through the oil dam (314) and then uniformly enters each bearing inner ring oil delivery groove (311), and the oil is thrown into the bearing (30) by the centrifugal force generated by high-speed rotation at the position of the radial oil hole (313), thereby lubricating the bearing inner ring (31), the bearing outer ring (32), the retainer (33) and the rolling bodies (34).
10. An under-ring oil supply lubrication method is characterized by being realized by the device of any one of claims 6 to 9, and comprising the following steps:
the lubricating oil sprayed by the oil supply nozzle is sprayed to an oil collecting groove of the radial oil collecting ring through an air field in a bearing cavity, the lubricating oil jet impacts an oil collecting blade to cause partial lubricating oil to be reflected and splashed, the lubricating oil entering an oil collecting channel of the radial oil collecting ring through an oil collecting inlet flows along the inner surface of the oil collecting blade, and the lubricating oil flows through a blade bulge on the oil collecting blade and then enters a front oil collecting ring groove;
the blade bulge on the oil collecting blade can prevent lubricating oil entering the front oil collecting ring groove from being thrown out of an oil collecting channel, the lubricating oil in the front oil collecting ring groove is conveyed to the rear oil collecting ring groove along the oil conveying chute, the flow speed of the lubricating oil is increased due to the fact that the inclined layout form of the oil conveying chute and the flow area of the oil conveying chute are gradually reduced, a certain amount of lubricating oil accumulated in the rear oil collecting ring groove uniformly enters the oil conveying groove of the bearing inner ring after flowing through the oil retaining dam, the lubricating oil is thrown into the bearing when flowing to the radial oil hole under the action of centrifugal force generated by high-speed rotation, and the bearing inner ring, the bearing outer ring, the retainer and the rolling body are lubricated and cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892991.1A CN110714987B (en) | 2019-09-20 | 2019-09-20 | Radial oil collecting ring, and oil supply and lubrication device and method under ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892991.1A CN110714987B (en) | 2019-09-20 | 2019-09-20 | Radial oil collecting ring, and oil supply and lubrication device and method under ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110714987A true CN110714987A (en) | 2020-01-21 |
| CN110714987B CN110714987B (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910892991.1A Active CN110714987B (en) | 2019-09-20 | 2019-09-20 | Radial oil collecting ring, and oil supply and lubrication device and method under ring |
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| CN (1) | CN110714987B (en) |
Cited By (6)
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|---|---|---|---|---|
| CN112720059A (en) * | 2021-02-02 | 2021-04-30 | 王丽梅 | Main shaft stability-increasing lubricating structure of numerical control lathe |
| CN112984091A (en) * | 2021-03-05 | 2021-06-18 | 中国航发沈阳发动机研究所 | Axle center oil supply structure of bearing between aircraft engine axles |
| CN114215851A (en) * | 2021-12-24 | 2022-03-22 | 中国航空发动机研究院 | Bearing oil supply sleeve and bearing oil supply device |
| CN114439856A (en) * | 2022-02-21 | 2022-05-06 | 中南大学 | Bearing lubricating device and method |
| CN114542594A (en) * | 2022-02-25 | 2022-05-27 | 西北工业大学 | Ball bearing with cooling structure and bearing cooling and lubricating method |
| CN114542595A (en) * | 2022-02-25 | 2022-05-27 | 西北工业大学 | Oil supply and return system of ball bearing with cooling structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720059A (en) * | 2021-02-02 | 2021-04-30 | 王丽梅 | Main shaft stability-increasing lubricating structure of numerical control lathe |
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| CN114215851A (en) * | 2021-12-24 | 2022-03-22 | 中国航空发动机研究院 | Bearing oil supply sleeve and bearing oil supply device |
| CN114439856A (en) * | 2022-02-21 | 2022-05-06 | 中南大学 | Bearing lubricating device and method |
| CN114542594A (en) * | 2022-02-25 | 2022-05-27 | 西北工业大学 | Ball bearing with cooling structure and bearing cooling and lubricating method |
| CN114542595A (en) * | 2022-02-25 | 2022-05-27 | 西北工业大学 | Oil supply and return system of ball bearing with cooling structure |
| CN114542595B (en) * | 2022-02-25 | 2023-06-23 | 西北工业大学 | Oil supply and return system of ball bearing with cooling structure |
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Effective date of registration: 20220309 Address after: 712000 floor 20, block 4-A, Xixian financial port, Fengdong new town energy gold trade zone, Xixian new area, Xi'an City, Shaanxi Province Patentee after: Xi'an ruipujiete Power Technology Co.,Ltd. Address before: 710068 No. 127 Youyi West Road, Shaanxi, Xi'an Patentee before: Northwestern Polytechnical University |