CN210196263U - Floating adjustable double-row tapered roller bearing - Google Patents
Floating adjustable double-row tapered roller bearing Download PDFInfo
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- CN210196263U CN210196263U CN201920977363.9U CN201920977363U CN210196263U CN 210196263 U CN210196263 U CN 210196263U CN 201920977363 U CN201920977363 U CN 201920977363U CN 210196263 U CN210196263 U CN 210196263U
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Abstract
The application relates to the technical field of bearings, in particular to a biserial tapered roller bearing capable of floating and adjusting, which comprises an inner ring and an outer ring sleeved on the inner ring, wherein the outer ring comprises two outer annular check rings along the axial direction of the outer ring; two rows of rolling bodies, each row of rolling bodies corresponds to each outer annular retainer ring and is positioned between each outer annular retainer ring and the inner ring; the outer bushing is sleeved on the outer walls of the two outer annular retainer rings and used for limiting the outer annular retainer rings, and the outer bushing is provided with an annular positioning part which can extend into the space between the two outer annular retainer rings; a plurality of springs, it sets up in annular location portion, and set up along outer annular retainer ring's circumference, make two outer annular retainer rings have the thrust that the direction carried on the back mutually, make outer lane and rolling element contact completely, guarantee that two outer annular retainer rings bear the effort of equaling simultaneously, will avoid wearing and tearing earlier of one of them outer annular retainer ring like this, reduce the life-span of bearing, simultaneously, still can avoid the bearing to produce the unable drunkenness of inflation messenger outer lane, lead to the phenomenon of bearing locking.
Description
Technical Field
The utility model relates to a bearing technical field especially relates to a but float and adjust double-row tapered roller bearing.
Background
The tapered roller bearing belongs to a separation type bearing, an inner ring and an outer ring of the bearing are both provided with tapered roller paths, and the double-row tapered roller bearing is provided with two rows of rollers and is one type of the tapered roller bearing. The double-row tapered roller bearing needs to have a certain axial clearance when in use, so that the expansion of the bearing caused by heat generation in the rotating process is prevented, the space between the inner ring and the outer ring is reduced, and the rolling body cannot rotate. Meanwhile, due to the existence of the axial play, in the running process of the bearing, the rolling bodies always deflect to one raceway of the outer ring, so that the stress of the other raceway is small or not, the rolling bodies slide with one raceway of the outer ring, and the fatigue failure is caused by abrasion and heat generation.
Therefore, a new tapered roller bearing is required to be designed to solve the above problems.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but float regulation tapered roller bearing, it utilizes and sets up the spring between two outer ring collars, can carry out the axial to two outer ring collars and adjust, guarantees that two outer ring collars bear the effort of equaling, avoids making the unable drunkenness of outer lane because of the bearing inflation, makes the dead phenomenon of bearing locking, also can avoid the condemned problem of bearing that one of them raceway earlier wearing and tearing brought simultaneously.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a floatably adjustable double row tapered roller bearing comprising:
an inner ring;
the outer ring is sleeved on the inner ring and comprises two outer annular retainer rings along the axial direction of the outer ring;
two rows of rolling bodies, each row of rolling bodies corresponds to each outer annular retainer ring and is positioned between each outer annular retainer ring and the inner ring;
the outer bushing is sleeved on the outer walls of the two outer annular retainer rings and used for limiting the outer annular retainer rings, and the outer bushing is provided with an annular positioning part which can extend into the space between the two outer annular retainer rings;
a plurality of springs, it sets up in annular location portion, and set up along outer annular retainer ring's circumference, make two outer annular retainer rings have the thrust that the direction carried on the back mutually, make outer lane and rolling element contact completely, guarantee that two outer annular retainer rings bear the effort of equaling simultaneously, will avoid wearing and tearing earlier of one of them outer annular retainer ring like this, reduce the life-span of bearing, simultaneously, still can avoid the bearing to produce the unable drunkenness of inflation messenger outer lane, lead to the phenomenon of bearing locking.
Furthermore, the inner ring is composed of two annular inner annular retainer rings, a middle spacer ring is arranged between the two inner annular retainer rings, the inner ring is arranged into a form composed of the two inner annular retainer rings, the purpose of arranging the middle spacer ring between the two inner annular retainer rings is to meet the requirements of different thicknesses of the inner ring, and when the inner ring needs different thicknesses, the inner ring can be adjusted by adjusting the thickness of the middle spacer ring.
Be equipped with the lubrication oil hole at above-mentioned annular location portion along its axial direction, the lubrication oil hole is equipped with a plurality of along annular location portion circumference, and the purpose that sets up the lubrication oil hole can be with inside lubricating oil infiltration to the bearing through this lubrication oil hole, and the rolling element has increased the lubricated degree of rolling element promptly, and then can reduce frictional force, indirect reduction thermal production.
Further, outer annular retaining ring annular location portion still is equipped with the locating hole, and the locating hole is equipped with a plurality of along annular location portion circumference, and the spring passes the locating hole and pastes tightly with two outer annular retaining rings, and this locating hole can provide the mounted position for the spring, and spacing spring prevents that it from dropping.
Furthermore, the annular positioning portion is also provided with a positioning pin hole along the axial direction of the annular positioning portion, and the positioning pin hole is provided with a plurality of positioning pins along the circumferential direction of the annular positioning portion. The locating pin hole can be connected two outer ring collars and outer bush, prevents that two outer ring collars from producing the circumferencial direction when inner ring rotates and rotating, avoids outer ring collars and outer bush to produce sliding friction, leads to bearing frame and bearing wearing and tearing, inefficacy.
Further, be equipped with the constant head tank on two outer ring collars respectively, the constant head tank is used for two outer ring collars of spacing relative outer bush circumferential direction with the downthehole locating pin that is equipped with of locating pin, and then the realization links firmly two outer ring collars and outer bush.
Preferably, the outer wall of the outer bushing is provided with a limiting groove along the axial direction, the limiting groove is provided with a plurality of limiting grooves along the circumferential direction of the outer wall of the outer bushing, and the limiting grooves can be positioned in the shaft sleeve of the machine tool in a bearing mode, so that the outer bushing cannot rotate in the circumferential direction in the shaft sleeve, friction between the outer bushing and the shaft sleeve is reduced, and further heat productivity is reduced.
The floating adjustment steps are as follows:
respectively arranging two rows of rolling bodies between the two outer annular retainer rings and the two inner annular retainer rings, so that the outer end surfaces of the two outer annular retainer rings along the axial direction thereof and the outer end surfaces of the two inner annular retainer rings along the axial direction thereof have a fall L respectively;
adjusting the positions of the two rows of rolling elements and the corresponding inner annular retainer rings relative to the outer annular retainer rings to enable the inner annular retainer rings to overcome the fall L and enable the two rows of rolling elements and the two outer annular retainer rings to respectively have gaps delta, and further determining the thickness of the middle spacer ring;
one row of rolling bodies and corresponding inner annular retainer rings and outer annular retainer rings are arranged in the outer lining;
compressing a spring to be placed in the annular positioning part, and installing the middle spacer ring, the other row of rolling bodies and the corresponding inner annular retainer ring and outer annular retainer ring into the outer bushing; the spring can push the two outer annular check rings to overcome the gap delta respectively, so that the two rows of rolling elements are in contact with the inner walls of the corresponding outer annular check rings respectively, gaps delta 1 are formed between the inner end surfaces of the two outer annular check rings and the two annular positioning parts respectively through the spring, and the gaps delta 1 can axially float when the rolling elements generate thermal expansion to prevent the rolling elements from being locked.
The utility model discloses utilize and set up a plurality of springs between two outer annular retainer rings, can carry out axial regulation to two outer annular retainer rings, guarantee that two outer annular retainer rings bear the identical effort, avoid making the outer lane unable drunkenness because of bearing expansion, cause the problem of bearing locking; in addition, the positioning pin is arranged on the outer bushing to connect the outer ring with the outer bushing, so that the outer ring is prevented from rotating circumferentially during the rotation of the rolling body, and the abrasion is reduced; meanwhile, the limiting groove is formed in the outer wall of the outer bushing, so that the position of the bearing in the shaft sleeve can be positioned, circumferential rotation of the bearing in the shaft sleeve is prevented, and friction and heat productivity are reduced.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of the outer bushing of the present invention;
FIG. 3 is a half-sectional view of the outer liner of the present invention;
FIG. 4 is a half sectional view of a lubrication oil passage in the outer liner;
FIG. 5 is a perspective view of one of the outer annular retainers;
FIG. 6 is a schematic view of the gap between two outer annular retainers and the mounting arrangement with the outer liner;
FIG. 7 is a schematic view of the gap installation between the inner ring and two outer annular retainers;
fig. 8 is a height differential view of one of the inner rings and one of the outer annular collar ends.
In the figure, 1, an outer bushing, 101, a limiting groove, 102, a positioning hole, 103, a positioning pin hole, 104, a lubricating oil hole, 105, a fastening screw hole, 106, an annular positioning part, 2, an outer annular retainer ring, 201, a positioning groove, 3, a retainer, 4, a rolling body, 5, an inner ring, 501, an inner annular retainer ring, 6, a middle spacer ring, 7, a positioning pin, 8, a fastening screw, 9 and a spring.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 8, a floatably adjustable double row tapered roller bearing includes: inner circle 5 and outer lane, above-mentioned inner circle 5 includes two interior annular retaining rings 501 along its axial, be equipped with well spacer 6 between two interior annular retaining rings 501, above-mentioned outer lane includes two independent outer annular retaining rings 2, annular outer lane is constituteed to two independent outer annular retaining rings 2, there is the clearance when two outer annular retaining rings 2 are installed, be equipped with a plurality of spring 9 along outer annular retaining ring 2 circumference interval in the clearance between two outer annular retaining rings 2, this spring 9 can produce the thrust of carrying on the back mutually to two outer annular retaining rings 2, make two outer annular retaining rings 2 and rolling element 4 complete contact, guarantee that two outer annular retaining rings 2 bear the equal effort simultaneously, will avoid one of them outer annular retaining ring 2 wearing and tearing earlier like this, reduce the life-span of bearing, and simultaneously, still can avoid the bearing to produce the unable drunkenness of inflation messenger outer lane.
The rolling bearing further comprises two cages 3 arranged between the two inner annular retainer rings 501 and the two outer annular retainer rings 2, and each cage 3 is provided with a row of rolling bodies 4;
still include outer bush 1, outer bush 1 sets up on the outer wall of two outer ring retainer 2, be used for spacingly, two outer ring retainer 2 of fixed, and simultaneously, be equipped with the annular location portion 106 that stretches into the clearance between two outer ring retainer 2 on outer bush 1, be used for direction and two outer ring retainer 2 of spacing, avoid two outer ring retainer 2 to lean on together, the spring 9 of saying is fixed on annular location portion 106, make two outer ring retainer 2 have the thrust that the direction is carried on the back mutually, consequently, can avoid rolling element 4 partial to one of them outer ring retainer 2, make rolling element 4 can contact with two outer ring retainer 2, avoid the unbalanced loading to lead to wearing and tearing aggravation.
The middle spacer 6 is of an annular structure and is arranged between the two inner annular retaining rings 501, the distance between the two inner annular retaining rings 501 can be changed by changing the thickness of the middle spacer 6, and the overall thickness of the two inner annular retaining rings 501 and the middle spacer 6 is further adjusted.
The gap between the two outer annular collars 2 is determined as follows:
two rows of rolling elements 4 are respectively arranged between the two outer annular retainer rings 2 and the two inner annular retainer rings 501, so that the outer end faces of the two outer annular retainer rings 2 along the axial direction and the outer end faces of the two inner annular retainer rings 501 along the axial direction have fall L respectively;
adjusting the positions of the two rows of rolling elements 4 and the inner annular retainer rings 501 corresponding to the two rows of rolling elements 4 relative to the outer annular retainer rings 2, so that the inner annular retainer rings 501 overcome the fall L, and the two rows of rolling elements 4 and the two outer annular retainer rings 2 respectively have gaps δ, as shown in fig. 7, thereby determining the thickness of the middle spacer 6;
one row of rolling bodies 4 and corresponding inner annular retainer rings 501 and outer annular retainer rings 2 are installed in the outer liner 1;
the spring 9 is placed in the annular positioning part 106 in a compressed mode, and the middle spacer 6, the other row of rolling bodies 4, the inner annular retainer ring 501 and the outer annular retainer ring 2 corresponding to the middle spacer and the other row of rolling bodies are installed into the outer bushing 1; the spring 9 can push the two outer annular retainer rings 2 to overcome the gap δ respectively, so that the two rows of rolling elements 4 are in contact with the inner walls of the corresponding outer annular retainer rings 2 respectively, and the spring 9 makes gaps δ 1 between the inner end surfaces of the two outer annular retainer rings 2 and the two annular positioning portions 601 respectively, as shown in fig. 6, the gaps δ 1 can axially shift to prevent the rolling elements from locking when the rolling elements thermally expand.
On the one hand, because the spring 9 is to the thrust effect of both sides, can avoid the bearing because of axial play's existence in the use, the outer annular retainer ring 2 of one of them that the raceway atress unbalance that rolling element 4 and two outer annular retainer rings 2 led to is worn seriously, the obscure problem of another outer annular retainer ring 2 wearing and tearing, and then has improved the life of bearing. On the other hand, when rolling element 4 generates heat and expands, the extrusion force between rolling element 4 and outer ring collar 2 increases, and at this moment, outer ring collar 2 is driven to the direction that is close to annular location portion 106 and is removed to rolling element 4, and then overcomes clearance δ 1 and guarantees that the extrusion force between rolling element 4 and outer ring collar 2 is unlikely to the phenomenon that too big leads to rolling element 4 locking.
Preferably, the outer liner 1 is T-shaped along its radial cross section, and the T-shaped structure has the advantages of simplicity and easy processing.
Furthermore, a plurality of lubricating oil holes 104 are drilled in the annular positioning portion 106 along the axial direction, and the lubricating oil holes 104 are circumferentially arranged along the annular positioning portion 106, as shown in fig. 4, the purpose of arranging the lubricating oil holes 104 is to enable lubricating oil to penetrate into the bearing through the lubricating oil holes 104 until reaching the rolling elements 4, so that the lubricating degree of the rolling elements 4 is increased, the friction force can be reduced, and the heat generation can be indirectly reduced.
Furthermore, a positioning hole 102 is drilled in the annular positioning portion 106 along the axial direction of the annular positioning portion 106, a plurality of positioning holes 102 are formed in the circumferential direction of the annular positioning portion 106, the spring 9 penetrates through the positioning holes 102, two ends of the spring 9 are tightly attached to the two outer annular retainer rings 2, the positioning holes 102 can provide an installation position for the spring 9, the spring 9 is limited and fixed, and the spring 9 is prevented from falling.
Furthermore, a plurality of positioning pin holes 103 are drilled in the annular positioning portion 106 along the axial direction of the annular positioning portion 106, and the plurality of positioning pin holes 103 are arranged along the circumferential direction of the annular positioning portion 106.
Furthermore, positioning grooves 201 corresponding to the positioning pin holes 103 are respectively arranged on the two outer annular retainer rings 2, positioning pins 7 are arranged in the positioning grooves 201 and the positioning pin holes 103, the two outer annular retainer rings 2 are connected by the positioning pins 7, meanwhile, the positioning pins 7 are fixed on the outer bushing 1 through set screws 8, the set screws 8 are arranged in set screw holes 105 of the outer bushing 1, the set screw holes 105 are arranged along the radial direction of the annular positioning part 106, and the set screws 8 can penetrate through the set screw holes 105 to fix the positioning pins 7 on the outer bushing 1; simultaneously, locating pin 7 can be connected two outer annular retainer rings 2 and outer bush 1, prevents that two outer annular retainer rings 2 from producing the circumferencial direction when two inner ring retainer rings 501 rotate, avoids outer annular retainer ring 2 and outer bush 1 to produce sliding friction, leads to bearing frame and bearing wearing and tearing, inefficacy.
Further, be equipped with spacing groove 101 along its axial direction on outer wall of outer bush 1, spacing groove 101 sets up a plurality of along outer wall circumference of outer bush 1, this spacing groove 101 is the oblique keyway, it can cooperate with the axle sleeve, can put into lathe axle sleeve at the bearing and fix a position, make outer bush 1 and outer lane firmly fix in the axle sleeve, prevent that the outer lane from when rolling element 4 rotates, outer bush 1 and outer lane can not produce the rotation of circumferencial direction, reduce the friction between outer bush 1 and the axle sleeve, and then reduce calorific capacity.
The installation process of the floating adjustment tapered roller bearing comprises the following steps:
one row of rolling bodies 4 is arranged on a raceway of one inner annular retainer ring 501, and the retainer 3 is sleeved on the row of rolling bodies 4;
placing a spring 9 in a positioning hole 102 of an annular positioning part 106, sleeving an outer bushing 1 on the outer wall of an outer annular retainer ring 2 corresponding to the row of rolling bodies 4, placing a positioning pin 7 in a positioning pin hole 103 of the annular positioning part 106 and a positioning groove 201 on the outer annular retainer ring 2, and fixing the positioning pin 7 on the outer bushing 1 by using a set screw 8;
then, another outer annular retainer 2 is placed on the inner wall of the outer liner 1, and the positioning groove 201 of the outer annular retainer 2 is clamped on the positioning pin 7;
sleeving the row of rolling bodies 4 and the inner annular retainer ring 501 on the inner wall of one corresponding outer annular retainer ring 2;
the middle spacer ring 6 is placed between the two inner annular retainer rings 501;
then, another row of rolling bodies 4 is arranged on the raceway of another inner annular retainer ring 501, and the retainer 3 is sleeved on the row of rolling bodies 4;
and sleeving the row of rolling bodies 4 and the corresponding inner annular retainer ring 501 on the inner wall of the other corresponding outer annular retainer ring 2 to complete the installation of the tapered roller bearing.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. The utility model provides a but float and adjust double-row tapered roller bearing which characterized in that includes:
an inner ring;
the outer ring is sleeved on the inner ring and comprises two outer annular retainer rings along the axial direction;
two rows of rolling bodies, each row of rolling bodies corresponds to each outer annular retainer ring and is positioned between each outer annular retainer ring and the inner ring;
the outer bushing is sleeved on the outer walls of the two outer annular retainer rings and used for limiting the outer annular retainer rings, and the outer bushing is provided with an annular positioning part which can extend into the space between the two outer annular retainer rings;
the several spring, its set up in annular location portion, and follow the circumference setting of outer annular retainer ring makes two outer annular retainer ring has the thrust that the direction carried on the back mutually.
2. The double-row tapered roller bearing capable of floating adjustment according to claim 1, wherein: annular location portion is equipped with the lubricated oil hole along its axial direction, lubricated oil hole is followed annular location portion circumference is equipped with a plurality of.
3. The double-row tapered roller bearing capable of floating adjustment according to claim 1, wherein: the annular positioning portion of the outer annular retainer ring is further provided with a positioning hole, a plurality of positioning holes are circumferentially arranged on the annular positioning portion, and the spring penetrates through the positioning holes and the two outer annular retainer rings to be tightly attached.
4. The double-row tapered roller bearing capable of floating adjustment according to claim 1, wherein: the annular positioning portion is further provided with a positioning pin hole along the axial direction of the annular positioning portion, and the positioning pin hole is provided with a plurality of positioning pins along the circumferential direction of the annular positioning portion.
5. The double-row tapered roller bearing capable of floating adjustment according to claim 4, wherein: and positioning grooves are respectively arranged on the two outer annular check rings, and positioning pins which are used for limiting the two outer annular check rings to rotate relative to the outer bushing are arranged in the positioning grooves and the positioning pin holes.
6. The double-row tapered roller bearing capable of floating adjustment according to claim 1, wherein: the outer wall of the outer bushing is provided with a limiting groove along the axial direction of the outer bushing, and the limiting groove is provided with a plurality of limiting grooves along the circumferential direction of the outer wall of the outer bushing.
7. The double row tapered roller bearing according to any one of claims 1 to 6, wherein the inner ring includes two inner annular retainer rings in an axial direction thereof, and a middle spacer ring is provided between the two inner annular retainer rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920977363.9U CN210196263U (en) | 2019-06-26 | 2019-06-26 | Floating adjustable double-row tapered roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920977363.9U CN210196263U (en) | 2019-06-26 | 2019-06-26 | Floating adjustable double-row tapered roller bearing |
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| Publication Number | Publication Date |
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| CN210196263U true CN210196263U (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920977363.9U Active CN210196263U (en) | 2019-06-26 | 2019-06-26 | Floating adjustable double-row tapered roller bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145540A (en) * | 2019-06-26 | 2019-08-20 | 大连光扬轴承制造有限公司 | One kind, which can float, adjusts double row tapered roller bearing and adjusting method |
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2019
- 2019-06-26 CN CN201920977363.9U patent/CN210196263U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145540A (en) * | 2019-06-26 | 2019-08-20 | 大连光扬轴承制造有限公司 | One kind, which can float, adjusts double row tapered roller bearing and adjusting method |
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