CN112032202A - Tapered roller bearing and grease collecting device - Google Patents

Tapered roller bearing and grease collecting device Download PDF

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Publication number
CN112032202A
CN112032202A CN202010985170.5A CN202010985170A CN112032202A CN 112032202 A CN112032202 A CN 112032202A CN 202010985170 A CN202010985170 A CN 202010985170A CN 112032202 A CN112032202 A CN 112032202A
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CN
China
Prior art keywords
grease
collecting device
bearing
oil outlet
grease collecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010985170.5A
Other languages
Chinese (zh)
Inventor
吴丽娟
蔡福强
刘鑫
李春蕾
王勇
赵艳英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to CN202010985170.5A priority Critical patent/CN112032202A/en
Publication of CN112032202A publication Critical patent/CN112032202A/en
Pending legal-status Critical Current

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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
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6622—Details of supply and/or removal of the grease, e.g. purging grease
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • 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
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6629—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The embodiment of the invention provides a tapered roller bearing and a grease collecting device, wherein the grease collecting device is integrally in an annular structure and is provided with a hollow oil storage cavity, the grease collecting device is suitable for being arranged between a bearing outer ring and a middle spacer and is fixed on one of the bearing outer ring and the middle spacer, a gap is formed between the grease collecting device and the other of the bearing outer ring and the middle spacer, the grease collecting device is provided with an oil outlet, and the oil outlet penetrates through a shell of the grease collecting device. The grease collecting device provided by the embodiment of the invention can reduce the temperature rise in the bearing and prolong the service life of the bearing.

Description

Tapered roller bearing and grease collecting device
Technical Field
The embodiment of the invention relates to the technical field of machinery, in particular to a tapered roller bearing and a grease collecting device.
Background
The tapered roller bearing is mainly applied to a scene needing to bear axial and radial combined loads at the same time, and comprises a bearing inner ring, a bearing outer ring, a retainer and rollers, wherein the bearing inner ring, the rollers and the retainer form a whole to form a bearing inner ring assembly, namely: the cage clamps the bearing inner race, thereby trapping the rollers between the bearing inner race and the cage. In order to control the axial play of the bearing, taking the double-row bearing inner ring as an example, the axial play is usually adjusted by providing a center spacer between the two bearing inner rings, so as to maintain the consistency of the bearing dimensions.
When the bearing runs at a high speed, due to the action of centrifugal force and the design of the conical roller path, grease at the position of the middle spacer ring can be gradually thrown to the sealing positions at the two axial ends of the bearing. In order to meet the requirement of long time for maintenance-free of the bearing and guarantee the lubricating effect at the position of the middle spacer ring, the grease amount at the position of the middle spacer ring can be increased.
However, increased grease can result in higher temperatures at the mid-spacer location, which can affect bearing life.
Therefore, how to reduce the temperature rise inside the bearing becomes a technical problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The embodiment of the invention solves the technical problem of reducing the temperature rise in the bearing.
In order to solve the above problems, an embodiment of the present invention provides a grease collecting device, which is integrally in an annular structure and provided with a hollow oil storage cavity, wherein the grease collecting device is suitable for being disposed between a bearing outer ring and a middle spacer and fixed to one of the bearing outer ring and the middle spacer, a gap is formed between the grease collecting device and the other of the bearing outer ring and the middle spacer, the grease collecting device is provided with an oil outlet, and the oil outlet penetrates through a casing of the grease collecting device.
Optionally, the grease collecting device is adapted to be fixed to the bearing outer ring;
the oil outlet includes first oil outlet, first oil outlet is seted up in the position that is close to the bearing inner race of grease collection device's terminal surface casing.
Optionally, the grease collecting device is provided with an oil filling hole penetrating through an outer ring shell of the grease collecting device, and the oil filling hole is suitable for being communicated with an oil filling channel of the bearing outer ring.
Optionally, the oil outlet further comprises a second oil outlet, and the second oil outlet is arranged on the inner ring shell of the grease collecting device.
Optionally, the number of the oil outlet holes is at least two, and the oil outlet holes are uniformly distributed along the circumferential direction of the grease collecting device.
Optionally, the grease collecting device includes a first annular housing and a second annular housing, the first annular housing has a first annular groove, the second annular housing has a second annular groove, an opening of the first annular groove is opposite to and coincident with an opening of the second annular groove, the first annular groove and the second annular groove form the hollow oil storage cavity, and the oil outlet is provided on the first annular housing and/or the second annular housing.
Optionally, the shape of the first annular housing and the shape of the second annular housing are the same.
In order to solve the above problem, an embodiment of the present invention further provides a tapered roller bearing, including:
a bearing outer race;
the bearing inner rings are coaxially arranged with the bearing outer rings, and the number of the bearing inner rings is 2;
the middle spacer ring is coaxially arranged with the bearing inner rings and is arranged among the 2 bearing inner rings;
and the grease collecting device is arranged between the bearing outer ring and the middle spacing ring, is fixed on one of the bearing outer ring and the middle spacing ring, and has a gap with the other of the bearing outer ring and the middle spacing ring.
Optionally, a clamping groove is formed in the inner ring surface of the bearing outer ring, and the grease collecting device is clamped and fixed in the clamping groove.
Optionally, an oil drainage groove is formed in the middle spacer ring, an opening of the oil drainage groove is communicated with the outer annular surface of the middle spacer ring, and the thickness of the side wall of the oil drainage groove is gradually reduced along the direction from the inner annular surface of the middle spacer ring to the outer annular surface.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
according to the grease collecting device provided by the embodiment of the invention, the grease collecting device is fixed on one of the bearing outer ring and the middle spacer, a gap is formed between the grease collecting device and the other of the bearing outer ring and the middle spacer, and the grease collecting device is provided with the oil outlet penetrating through the shell of the grease collecting device. Because the grease collecting device is arranged between the bearing outer ring and the spacer ring, grease at the position of the spacer ring is stored in the hollow oil storage cavity, when the bearing runs at a high speed, the grease in the grease collecting device can slowly flow out through the oil outlet, the grease flowing out along the oil outlet can enter the roller path and lubricate the roller path, so that the grease can be stored and distributed favorably, and the phenomenon that the temperature is increased due to the concentrated accumulation of the grease at the space between the spacer ring and the bearing outer ring is avoided; furthermore, as lubricating oil continuously passes through the oil outlet hole for a small amount of lubricating roller paths, grease at the space between the middle spacer ring and the bearing outer ring is not accumulated in a concentrated manner, and the phenomenon that the temperature of the retainer is too high due to the friction between a large amount of grease and the retainer when the grease is thrown to the two axial ends of the bearing can be avoided, so that the service life of the bearing is prolonged, the bearing can be free of maintenance for a long time, and the cost is reduced; furthermore, the grease collecting device provided by the embodiment of the invention is suitable for being fixed on one of the bearing outer ring and the spacer ring, so that the installation is simple, and the installation process of the original bearing is not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a partial sectional view of a tapered roller bearing provided by an embodiment of the present invention;
FIG. 2 is a partial schematic view of a tapered roller bearing provided by an embodiment of the present invention;
fig. 3 is a partial schematic view of a grease collection device according to an embodiment of the present invention.
Wherein: 10-a grease collection device; 100-oil holes; 101-a first oil outlet; 102-a second oil outlet; 110-a first annular housing; 120-a second annular housing; 20-a bearing outer ring; 210-oiling channel; 30-a bearing inner race; 40-a middle space ring; 400-oil drainage groove; 50-hollow oil storage chamber.
Detailed Description
As known from the background art, the service life of the current tapered roller bearing is not good.
In order to prolong the service life of the tapered roller bearing, the embodiment of the invention provides a grease collecting device and the tapered roller bearing. Because the grease collecting device is arranged between the bearing outer ring and the spacer ring, grease at the position of the spacer ring is stored in the hollow oil storage cavity, when the bearing runs at a high speed, the grease in the grease collecting device can slowly flow out through the oil outlet, the grease flowing out along the oil outlet can enter the roller path and lubricate the roller path, so that the grease can be stored and distributed favorably, and the phenomenon that the temperature is increased due to the concentrated accumulation of the grease at the space between the spacer ring and the bearing outer ring is avoided; furthermore, as lubricating oil continuously passes through the oil outlet hole for a small amount of lubricating roller paths, grease at the space between the middle spacer ring and the bearing outer ring is not accumulated in a concentrated manner, and the phenomenon that the temperature of the retainer is too high due to the friction between a large amount of grease and the retainer when the grease is thrown to the two axial ends of the bearing can be avoided, so that the service life of the bearing is prolonged, the bearing can be free of maintenance for a long time, and the cost is reduced; furthermore, the grease collecting device provided by the embodiment of the invention is suitable for being fixed on one of the bearing outer ring and the spacer ring, so that the installation is simple, and the installation process of the original bearing is not influenced.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the indication of the direction or the positional relationship referred to in the present specification is based on the direction or the positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and it is not intended to indicate or imply that the indicated device must have a specific direction, be configured in a specific direction, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, fig. 1 is a partial sectional view of a tapered roller bearing according to an embodiment of the present invention; fig. 2 is a partial schematic view of a tapered roller bearing provided by an embodiment of the present invention.
As shown in the drawings, the grease collecting device 10 provided by the embodiment of the present invention is integrally in an annular structure, and is provided with a hollow oil storage cavity 50, the grease collecting device 10 is suitable for being disposed between a bearing outer ring 20 and a spacer ring 40, and is fixed to one of the bearing outer ring 20 and the spacer ring 40, a gap exists between the grease collecting device 10 and the other of the bearing outer ring 20 and the spacer ring 40, and the grease collecting device 10 is provided with an oil outlet, and the oil outlet penetrates through a housing of the grease collecting device 10.
The oil outlet runs through grease collection device's casing indicates the surface of oil outlet intercommunication cavity oil storage chamber and casing to the grease of cavity oil storage intracavity can be followed the oil outlet and flowed.
The cross-sectional shape of the oil outlet hole is not limited, and for example, the cross-sectional shape of the oil outlet hole may be circular or rectangular. Of course, the oil outlet hole can be a straight hole with uniform cross section size or a curved through hole with inconsistent cross section size, as long as the grease in the hollow oil storage cavity can be ensured to flow out.
In order to increase the distribution of the grease and further improve the lubrication effect, in a specific embodiment, the number of the oil outlet holes may be at least two, and in order to ensure that the grease is uniformly distributed in the circumferential direction of the raceway of the bearing outer ring 20 and improve the uniformity of the distribution of the grease, the oil outlet holes may be uniformly distributed in the circumferential direction of the grease collecting device 10.
The grease collection device is fixed in the bearing outer lane with in the middle partition ring one of the two, just the grease collection device with the bearing outer lane with there is the clearance between the other in the middle partition ring two, indicates the grease collection device can be fixed in the bearing outer lane, and with in the middle partition ring between have the clearance, can also be that the grease collection device is fixed in the middle partition ring, and with the bearing outer lane between have the clearance. When the bearing runs, the grease collecting device can avoid friction between the grease collecting device and the inner ring of the bearing or the middle spacer ring.
According to the grease collecting device provided by the embodiment of the invention, the grease collecting device is fixed on one of the bearing outer ring and the middle spacer, a gap is formed between the grease collecting device and the other of the bearing outer ring and the middle spacer, and the grease collecting device is provided with the oil outlet penetrating through the shell of the grease collecting device. Because the grease collecting device is arranged between the bearing outer ring and the spacer ring, grease at the position of the spacer ring is stored in the hollow oil storage cavity, when the bearing runs at a high speed, the grease in the grease collecting device can slowly flow out through the oil outlet, the grease flowing out along the oil outlet can enter the roller path and lubricate the roller path, so that the grease can be stored and distributed favorably, and the phenomenon that the temperature is increased due to the concentrated accumulation of the grease at the space between the spacer ring and the bearing outer ring is avoided; furthermore, as lubricating oil continuously passes through the oil outlet hole for a small amount of lubricating roller paths, grease at the space between the middle spacer ring and the bearing outer ring is not accumulated in a concentrated manner, and the phenomenon that the temperature of the retainer is too high due to the friction between a large amount of grease and the retainer when the grease is thrown to the two axial ends of the bearing can be avoided, so that the service life of the bearing is prolonged, the bearing can be free of maintenance for a long time, and the cost is reduced; furthermore, the grease collecting device provided by the embodiment of the invention is suitable for being fixed on one of the bearing outer ring and the spacer ring, so that the installation is simple, and the installation process of the original bearing is not influenced.
To extend the bearing maintenance interval, in one embodiment, the grease collection device 10 is secured to the bearing outer race 20; therefore, the oil filling hole 100 penetrating through the outer ring shell is formed in the grease collecting device 10, the oil filling hole 100 is suitable for being communicated with the oil filling channel 210 of the bearing outer ring 20, lubricating oil can be subsequently supplemented to the grease collecting device 10 through the oil filling channel 210 on the bearing outer ring 20, the lubricating oil is not limited to be supplemented during bearing maintenance, the convenience of supplementing the lubricating oil into the grease collecting device 10 is improved, the bearing is prevented from being disassembled and assembled, and the bearing can be free of maintenance for a long time.
In order to improve the lubrication effect, in an embodiment, the oil outlet holes include a first oil outlet hole 101, and the first oil outlet hole 101 is opened at a position (a dotted frame area in fig. 1) of the end surface housing of the grease collecting device 10, which is close to the bearing outer ring 20. Because this region is close to the outer ring raceway, the grease flowing out along the first oil outlet hole 101 can be directly supplied to the outer ring raceway, improving the lubricating effect.
The sectional shape of the first oil outlet hole 101 is not limited, and for example, the sectional shape of the first oil outlet hole 101 may be circular or rectangular. Of course, the first oil outlet hole can be a straight hole with uniform cross section size or a curved through hole with inconsistent cross section size, as long as the grease in the hollow oil storage cavity can be ensured to flow out.
In order to increase the distribution of the grease and further improve the lubrication effect, in a specific embodiment, the number of the first oil outlet holes 101 may be at least two, and in order to ensure that the grease is uniformly distributed in the circumferential direction of the raceway of the bearing outer ring 20 and improve the uniformity of the distribution of the grease, each of the first oil outlet holes 101 may be uniformly distributed in the circumferential direction of the end surface shell.
In a specific embodiment, the oil outlet hole further comprises a second oil outlet hole 102, and the second oil outlet hole 102 is opened in an inner ring shell of the grease collecting device 10. As shown in fig. 2, the inner ring casing refers to a casing of the grease collecting device 10 close to the middle partition ring 40, and the second oil outlet hole 102 penetrates through the inner ring casing, so that grease in the hollow oil storage chamber 50 can flow to the outer ring surface of the middle partition ring 40 along the second oil outlet hole 102, and the lubricating effect is further improved.
The sectional shape of the second oil outlet hole 102 is not limited, and for example, the sectional shape of the second oil outlet hole 102 may be circular or rectangular. Of course, the second oil outlet hole can be a straight hole with uniform cross-sectional dimension or a curved through hole with inconsistent cross-sectional dimension, as long as the grease in the hollow oil storage cavity can be ensured to flow out.
In order to increase the distribution of the grease and further improve the lubrication effect, in a specific embodiment, the number of the second oil outlet holes 102 may be at least two, and in order to ensure that the grease is uniformly distributed in the circumferential direction of the raceway of the bearing inner ring 30 and improve the uniformity of the distribution of the grease, each of the second oil outlet holes 102 may be uniformly distributed in the circumferential direction of the inner ring shell.
In a specific embodiment, for the convenience of processing, the grease collecting device 10 may include a first annular housing 110 and a second annular housing 120, the first annular housing 110 has a first annular groove, the second annular housing 120 has a second annular groove, an opening of the first annular groove is opposite to and coincides with an opening of the second annular groove, the first annular groove and the second annular groove form the hollow oil storage cavity 50, and the first oil outlet is opened on the first annular housing 110 and/or the second annular housing 120.
The grease collecting device is composed of two parts arranged along the axial direction of the grease collecting device, and the hollow oil storage cavity is formed by combining and fixing the two parts. Of course, the first annular housing and the second annular housing may be two independent components, as long as it is ensured that the first annular housing and the second annular housing are spliced together to form the hollow oil storage cavity after the grease collecting device is mounted on the bearing outer ring.
The first oil outlet may be opened only to the first annular housing 110 or the second annular housing 120.
In one embodiment, the first annular housing 110 and the second annular housing 120 are identical for improved adaptability and mass production, and for improved assembly efficiency.
As shown in fig. 1, in order to solve the above problem, an embodiment of the present invention further provides a tapered roller bearing, including:
a bearing outer race 20;
the bearing inner rings 30 are coaxially arranged with the bearing outer ring 20, and the number of the bearing inner rings 30 is 2;
the middle spacer ring 40 is coaxially arranged with the bearing inner rings 30 and is arranged among the 2 bearing inner rings 30;
and the grease collecting device 10, wherein the grease collecting device 10 is arranged between the bearing outer ring 20 and the middle spacer 40, the grease collecting device 10 is fixed on one of the bearing outer ring 20 and the middle spacer 40, and a gap is formed between the grease collecting device 10 and the other of the bearing outer ring 20 and the middle spacer 40.
According to the tapered roller bearing provided by the embodiment of the invention, the grease collecting device is fixed on one of the bearing outer ring and the intermediate ring, and a gap exists between the grease collecting device and the other of the bearing outer ring and the intermediate ring, the grease collecting device is provided with the oil outlet penetrating through the shell of the grease collecting device, and because the grease collecting device is arranged between the bearing outer ring and the intermediate ring, grease at the position of the intermediate ring is stored in the hollow oil storage cavity, when the bearing runs at a high speed, the grease in the grease collecting device can slowly flow out through the oil outlet, the grease flowing out along the oil outlet can enter the raceway and lubricate the raceway, so that the grease can be stored and distributed, and the phenomenon that the temperature is increased due to the concentrated accumulation of the grease at the space between the intermediate ring and the bearing outer ring is avoided; furthermore, as lubricating oil continuously passes through the oil outlet hole for a small amount of lubricating roller paths, grease at the space between the middle spacer ring and the bearing outer ring is not accumulated in a concentrated manner, and the phenomenon that the temperature of the retainer is too high due to the friction between a large amount of grease and the retainer when the grease is thrown to the two axial ends of the bearing can be avoided, so that the service life of the bearing is prolonged, the bearing can be free of maintenance for a long time, and the cost is reduced; furthermore, the grease collecting device provided by the embodiment of the invention is suitable for being fixed on one of the bearing outer ring and the spacer ring, so that the installation is simple, and the installation process of the original bearing is not influenced.
In a specific embodiment, grease collection device 10 is fixed in bearing inner race 20, in order to fix grease collection device 10 for the convenience, the joint recess has been seted up to the inner annular surface of bearing inner race 20, grease collection device 10 joint in the joint recess. The snap groove may be an annular groove. Of course, in other embodiments, the grease collecting device may be fixed to the bearing outer ring in other manners such as interference fit.
In order to improve the lubrication effect, in an embodiment, the first oil outlet 1011 is opened at a position (a dashed box area in fig. 1) of the end surface housing of the grease collecting device 10, which is close to the bearing outer ring 20. Because this region is close to the outer ring raceway, the grease flowing out along the first oil outlet hole 101 can be directly supplied to the outer ring raceway, improving the lubricating effect.
In a specific embodiment, a drainage groove 400 is provided on the middle spacer 40, an opening of the drainage groove 400 communicates with an outer annular surface of the middle spacer 40, and a side wall thickness of the drainage groove 400 is gradually reduced along a direction from the inner annular surface of the middle spacer 40 to the outer annular surface. Through setting the lateral wall of draining recess 400 to domatic, be more favorable to throwing away along domatic the grease that falls into the outer annular surface of well spacer ring 40 to be favorable to improving the lubricated effect of bearing. Of course, in other embodiments, the outer annular surface of the middle partition ring may not be provided with the oil drainage groove.
Although the embodiments of the present invention have been disclosed, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides a grease collection device, its characterized in that wholly is the loop configuration, has seted up the cavity oil storage chamber, grease collection device is suitable for to set up between bearing outer lane and space ring, is fixed in the bearing outer lane with one in the two of space ring, just grease collection device with the bearing outer lane with there is the clearance between another in the two of space ring, oil outlet has been seted up to grease collection device, the oil outlet runs through grease collection device's casing.
2. A grease collecting device according to claim 1, characterised in that the grease collecting device is adapted to be secured to the bearing outer race;
the oil outlet includes first oil outlet, first oil outlet is seted up in the position that is close to the bearing inner race of grease collection device's terminal surface casing.
3. The grease collecting device according to claim 2, wherein the grease collecting device is provided with an oil hole penetrating through an outer ring housing of the grease collecting device, and the oil hole is adapted to communicate with an oil filling passage of the bearing outer ring.
4. The grease collecting device according to claim 2, wherein the oil outlet hole further comprises a second oil outlet hole opened in an inner ring housing of the grease collecting device.
5. The grease collecting device according to claim 1, wherein the number of the oil outlet holes is at least two, and each of the oil outlet holes is evenly distributed along the circumferential direction of the grease collecting device.
6. The grease collecting device according to claim 1, comprising a first annular housing having a first annular groove and a second annular housing having a second annular groove, wherein the opening of the first annular groove is opposite to and coincident with the opening of the second annular groove, the first annular groove and the second annular groove form the hollow oil storage chamber, and the oil outlet is opened on the first annular housing and/or the second annular housing.
7. The grease collecting device according to claim 6 wherein the first annular housing and the second annular housing are identical.
8. A tapered roller bearing, characterized by comprising:
a bearing outer race;
the bearing inner rings are coaxially arranged with the bearing outer rings, and the number of the bearing inner rings is 2;
the middle spacer ring is coaxially arranged with the bearing inner rings and is arranged among the 2 bearing inner rings;
the grease collecting device according to any one of claims 1 to 7, which is provided between the bearing outer ring and the intermediate collar, the grease collecting device being fixed to one of the bearing outer ring and the intermediate collar with a gap therebetween.
9. The tapered roller bearing of claim 8, wherein a clamping groove is formed in an inner annular surface of the bearing outer ring, and the grease collecting device is clamped and fixed in the clamping groove.
10. The tapered roller bearing as claimed in claim 8, wherein an oil drainage groove is provided in the intermediate collar, an opening of the oil drainage groove communicates with an outer circumferential surface of the intermediate collar, and a thickness of a sidewall of the oil drainage groove is gradually reduced in a direction in which an inner circumferential surface of the intermediate collar faces the outer circumferential surface.
CN202010985170.5A 2020-09-18 2020-09-18 Tapered roller bearing and grease collecting device Pending CN112032202A (en)

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CN202010985170.5A CN112032202A (en) 2020-09-18 2020-09-18 Tapered roller bearing and grease collecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010985170.5A CN112032202A (en) 2020-09-18 2020-09-18 Tapered roller bearing and grease collecting device

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CN112032202A true CN112032202A (en) 2020-12-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116658525A (en) * 2023-05-26 2023-08-29 嘉兴荣昌轴承股份有限公司 High-precision self-lubricating bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116658525A (en) * 2023-05-26 2023-08-29 嘉兴荣昌轴承股份有限公司 High-precision self-lubricating bearing
CN116658525B (en) * 2023-05-26 2023-10-13 嘉兴荣昌轴承股份有限公司 High-precision self-lubricating bearing

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