CN114607699A - Rotary self-aligning roller bearing - Google Patents
Rotary self-aligning roller bearing Download PDFInfo
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- CN114607699A CN114607699A CN202210338931.7A CN202210338931A CN114607699A CN 114607699 A CN114607699 A CN 114607699A CN 202210338931 A CN202210338931 A CN 202210338931A CN 114607699 A CN114607699 A CN 114607699A
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- inner ring
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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
- 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
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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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
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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
- F16C33/58—Raceways; Race rings
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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
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7836—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members floating with respect to both races
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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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C39/00—Relieving load on bearings
- F16C39/02—Relieving load on bearings using mechanical means
Abstract
The invention discloses a rotating self-aligning roller bearing, which is applied to the field of bearings.A bearing inner ring is rotatably connected with a rotating sleeve by taking an axial central line as a rotation center, and the rotating sleeve can rotate relative to the bearing inner ring but cannot axially displace relative to the bearing inner ring; the rotary sleeve is in threaded connection with the withdrawal sleeve, when the rotary sleeve rotates, the rotary sleeve drives the withdrawal sleeve to move along the axial direction, and the rotation is converted into movement through threaded connection; the first end of the withdrawal sleeve can extend into the inner ring of the bearing, and the pipe wall thickness of the withdrawal sleeve is provided with a gradual increase section from the first end to the second end; when the rotary sleeve is installed, the rotary sleeve rotates to enable the dismounting sleeve to move towards the direction of the bearing inner ring, and the dismounting sleeve is inserted between the bearing inner ring and the rotary shaft to realize interference assembly; when the bearing is disassembled, the rotating sleeve is rotated reversely, and the disassembling sleeve moves towards the direction far away from the inner ring of the bearing to realize the disassembly; the bearing can be quickly and efficiently assembled and disassembled, the rotation precision of the bearing is kept stable, the bearing is suitable for severe working conditions, and fretting corrosion is eliminated.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a rotating self-aligning roller bearing.
Background
When assembling the bearing, the current locking mode comprises a set screw, an eccentric sleeve, a set sleeve, a concentric sleeve, a withdrawal sleeve and the like.
The inner diameter and the channel of the inner ring are deformed by tightening the screw locking mode, so that the size, the form and position precision and the rotating speed are reduced; the locking mode of the eccentric sleeve is not reversible; the tight sleeve locking mode is difficult to disassemble; the concentric sleeve locking mode increases the processing procedure of the inner ring and increases the cost; the disassembly sleeve is assembled in an impact mode and is difficult to disassemble.
For those skilled in the art, how to quickly and conveniently disassemble and assemble the bearing inner ring, keep the bearing rotation precision stable, and eliminate fretting corrosion is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a rotating self-aligning roller bearing, which solves the technical problems of inconvenient installation and disassembly, low rotating precision, fretting corrosion and the like, and the specific scheme is as follows:
a rotary self-aligning roller bearing comprises a bearing inner ring and a bearing outer ring which can relatively rotate and adjust the axial angle, wherein the bearing inner ring is rotatably connected with a rotary sleeve by taking an axial central line as a rotation center, and the axial positions of the rotary sleeve and the bearing inner ring are relatively fixed;
the rotary sleeve is in threaded connection with the unloading sleeve, and the rotary sleeve can drive the unloading sleeve to move axially when rotating; the first end of the withdrawal sleeve can extend into the bearing inner ring, and the pipe wall thickness of the withdrawal sleeve is gradually increased from the first end to the second end.
Optionally, the rotating sleeve is provided with an internal thread, the stripper sleeve is provided with an external thread, and the stripper sleeve can be inserted into the rotating sleeve.
Optionally, one end of the rotating sleeve axially extends out of the bearing inner ring, and the internal thread of the rotating sleeve is arranged at the extending section.
Optionally, the second end of the rotating sleeve is provided with a stop ring by a set screw, and the stop ring and the withdrawal sleeve are kept axially fixed relative to each other.
Optionally, the bearing inner ring and the rotating sleeve are in axial positioning connection through a circlip for a shaft.
Optionally, a multi-lip sealing ring is fixedly mounted at each of two ends of the bearing outer ring, an inner ring of the multi-lip sealing ring is in sealing contact with the outer surface of the bearing inner ring, and the position where the outer surface of the bearing inner ring is in contact with the multi-lip sealing ring is set to be a spherical surface; the spherical surface takes the rotation center as the circle center and takes the distance from the rotation center to the inner ring of the multi-lip sealing ring as the radius.
Optionally, the multi-lip sealing ring is clamped and fixed on the end face of the bearing outer ring.
Optionally, a sealing retainer ring is fixedly mounted at a first end of the bearing inner ring, the sealing retainer ring is provided with a spherical surface, and the spherical surface is used for being in sealing contact with a sealing lip convexly arranged on the multi-lip sealing ring; the spherical surface takes the rotation center as the circle center and takes the distance from the rotation center to the sealing connection point of the sealing lip as the radius.
Optionally, the rotating sleeve is provided with a spherical surface, and the spherical surface is used for being in sealing contact with the sealing lip convexly arranged on the multi-lip sealing ring; the spherical surface takes the rotation center as the circle center and takes the distance from the rotation center to the sealing connection point of the sealing lip as the radius.
Optionally, the bearing outer race is mounted within a bearing housing, the bearing housing and the bearing outer race being held in axially aligned connection by a circlip through the aperture.
The invention provides a rotating self-aligning roller bearing.A bearing inner ring and a bearing outer ring can relatively rotate to adjust the axial angle, and the bearing inner ring is fixed on a rotating shaft and rotates relative to the bearing outer ring; the bearing inner ring is rotationally connected with a rotating sleeve by taking the axial central line as a rotation center, the rotating sleeve can rotate relative to the bearing inner ring, but the rotating sleeve and the bearing inner ring cannot relatively axially displace; the rotary sleeve is in threaded connection with the withdrawal sleeve, when the rotary sleeve rotates, the rotary sleeve drives the withdrawal sleeve to move along the axial direction, and the rotation is converted into movement through threaded connection; the first end of the withdrawal sleeve can extend into the inner ring of the bearing, and the pipe wall thickness of the withdrawal sleeve is provided with a gradual increase section from the first end to the second end; when the rotary sleeve is installed, the rotary sleeve rotates to enable the withdrawal sleeve to move towards the direction of the bearing inner ring, and the withdrawal sleeve is inserted between the bearing inner ring and the rotary shaft to realize interference assembly; when the bearing is disassembled, the rotating sleeve is rotated reversely, and the disassembling sleeve moves towards the direction far away from the inner ring of the bearing to realize the disassembly; the bearing can be quickly and efficiently assembled and disassembled, the rotation precision of the bearing is kept stable, the bearing is suitable for severe working conditions, and fretting corrosion is eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a self-aligning roller bearing according to the present invention;
FIG. 2 is an enlarged partial view of the circular dashed circle box of FIG. 1;
FIG. 3 is an enlarged partial view of the dashed circle in FIG. 2;
fig. 4 and 5 are a front view and a top view of the appearance of the self-aligning rolling bearing according to the present invention.
The figure includes:
the bearing comprises a bearing inner ring 1, a shaft elastic retainer ring 11, a bearing outer ring 2, a rotating sleeve 3, a stop ring 31, a fixing screw 32, a withdrawal sleeve 4, a multi-lip seal ring 5, a seal lip 51, a seal retainer ring 6, a bearing seat 7 and a hole elastic retainer ring 71.
Detailed Description
The core of the invention is to provide a rotating self-aligning roller bearing which is convenient to mount and dismount, keeps the rotating precision of the bearing stable, adapts to severe working conditions and eliminates fretting corrosion.
In order to make those skilled in the art better understand the technical solution of the present invention, the self-aligning rolling bearing of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a cross-sectional view of a self-aligning rolling bearing according to the present invention; FIG. 2 is an enlarged partial view of the circular dashed circle box of FIG. 1; the bearing comprises a bearing inner ring 1, a bearing outer ring 2, a rotating sleeve 3, a withdrawal sleeve 4 and other structures, wherein the bearing inner ring 1 is arranged in the bearing outer ring 2, and a roller is arranged between the bearing inner ring 1 and the bearing outer ring 2. The rotating shaft can be inserted in the bearing inner ring 1, and the bearing inner ring 1 and the bearing outer ring 2 can rotate relatively to adjust the axial angle, so that the aligning effect is achieved.
The bearing inner ring 1 is rotatably connected with the rotating sleeve 3 by taking the axial central line as a rotation center, the rotating sleeve 3 can rotate around the central axis relative to the bearing inner ring 1, but the axial positions of the rotating sleeve 3 and the bearing inner ring 1 are kept relatively fixed, and the rotating sleeve 3 cannot axially displace relative to the bearing inner ring 1. The rotating sleeve 3 may be a casting.
The rotating sleeve 3 is in threaded connection with the withdrawal sleeve 4, the position shown in figure 1D being a thread. The rotary sleeve 3 can drive the withdrawal sleeve 4 to move along the axial direction when rotating, and the rotation of the rotary sleeve 3 can be converted into the displacement of the withdrawal sleeve 4. The first end of the withdrawal sleeve 4 can extend into the bearing inner ring 1, and the pipe wall thickness of the withdrawal sleeve 4 is gradually increased from the first end to the second end.
The inner wall of the bearing inner ring 1 is a conical surface, the longitudinal section of the unloading sleeve 4 is wedge-shaped, as shown in the combined drawing 1, the left side is a first end, the right side is a second end, the pipe wall of the first end on the left side of the unloading sleeve 4 is thinner, the pipe wall of the second end on the right side is thicker, and the pipe wall is uniformly and gradually changed. During installation, the withdrawal sleeve 4 moves from right to left and is inserted between the bearing inner ring 1 and the rotating shaft, and the clearance formed between the bearing inner ring 1 and the rotating shaft is filled in the circumferential direction.
The gap between the bearing inner ring 1 and the rotating shaft can be filled by the withdrawal sleeve 4, and the circumferential filling at each angle is uniform, so that the rotating precision of the bearing is kept stable, and the bearing is suitable for severe working conditions; the gap between the bearing inner ring 1 and the rotating shaft is completely filled, so that the oxidation caused by working in a high-temperature environment is avoided, the fretting corrosion is eliminated, and the load is uniformly distributed on the tracks on the two sides.
According to the invention, the rotary sleeve 3 and the withdrawal sleeve 4 are in threaded connection to realize mounting and dismounting, impact does not need to be applied to the withdrawal sleeve 4 in the process, mounting and dismounting of the withdrawal sleeve 4 can be realized rapidly and conveniently, and the dismounting efficiency is improved. The rotating sleeve 3 replaces the conventional sealing and locking structure, simplifies the structure and enhances the rigidity.
On the basis of the scheme, the rotary sleeve 3 is provided with an internal thread, the withdrawal sleeve 4 is provided with an external thread, and the withdrawal sleeve 4 can be inserted into the rotary sleeve 3; in the scheme, the withdrawal sleeve 4 is of a cylindrical structure, and the withdrawal sleeve 4 is correspondingly inserted into the inner cavity of the rotating sleeve 3, so that the structure is simple.
One end of the rotating sleeve 3 axially extends out of the bearing inner ring 1, the internal thread of the rotating sleeve 3 is arranged at the extending section, and the rotating sleeve 3 and the bearing inner ring 1 have an overlapped part which keeps relative rotation connection.
The second end of the rotating sleeve 3 is provided with a stop ring 31 by a fixing screw 32, the stop ring 31 and the withdrawal sleeve 4 are kept axially fixed relatively, and the stop ring 31 is used for stopping the withdrawal sleeve 4 from loosening. Referring to fig. 2, the stop ring 31 is clamped to the stripper sleeve 4, and when the stripper sleeve 4 is mounted in place, the fixing screw 32 fixes the stop ring 31 to the rotary sleeve 3 to prevent the stripper sleeve 4 from loosening.
The bearing inner ring 1 and the rotating sleeve 3 are connected in an axial positioning mode through the elastic retaining ring 11 for the shaft, the periphery of the bearing inner ring 1 is provided with an annular mounting groove, the inner wall of the rotating sleeve 3 is provided with an annular mounting groove, and the elastic retaining ring 11 for the shaft is clamped in the two mounting grooves to achieve axial relative positioning.
On the basis of any one of the technical schemes and the mutual combination thereof, the multi-lip sealing rings 5 are respectively and fixedly installed at the two ends of the bearing outer ring 2, and are shown in a combined figure 3 and are a partial enlarged view of a dotted line circular frame in the figure 2; the multi-lip sealing ring 5 is of an annular structure, the inner ring of the multi-lip sealing ring 5 is in sealing contact with the outer surface of the bearing inner ring 1, the position where the outer surface of the bearing inner ring 1 is in contact with the multi-lip sealing ring 5 is set to be a spherical surface, and the spherical surface is located at the position A shown in fig. 3; the spherical surface takes the rotation center as the center of a circle and the distance from the rotation center to the inner ring of the multi-lip seal ring 5 as the radius, namely the radius R in figure 1. Note that the radius R in fig. 1 coincides with the center of R.
Because the outer surface of the bearing inner ring 1 is provided with the spherical surface, no matter the bearing inner ring 1 rotates to any angle relative to the bearing outer ring 2, the multi-lip sealing ring 5 always keeps sealing contact with the bearing inner ring 1, and the whole sealing performance of the bearing is improved.
Preferably, the multi-lip seal ring 5 is clamped and fixed on the end surface of the bearing outer ring 2, as shown in fig. 2, clamping grooves are respectively arranged on the end surfaces of the left side and the right side of the bearing outer ring 2, and the multi-lip seal ring 5 is clamped and fixed in the clamping grooves; compared with the traditional structure of clamping the sealing ring on the inner wall of the outer ring, the structure can avoid the influence of the contact of the roller and the sealing ring on the rotation stability.
Furthermore, a sealing check ring 6 is fixedly arranged at the first end of the bearing inner ring 1, a withdrawal sleeve 4 is arranged at the second end of the bearing inner ring 1, and the withdrawal sleeve 4 and the sealing check ring 6 are respectively arranged at two ends of the bearing inner ring 1.
The sealing retainer ring 6 is provided with a spherical surface which is positioned at the position shown as B in figure 3 and is used for being in sealing contact with a sealing lip 51 which is convexly arranged on the multi-lip sealing ring 5; the spherical surface is centered on the center of rotation and has a radius r as shown in fig. 1, which is the distance from the center of rotation to the sealing connection point of the sealing lip 51. The seal lip 51 rotates synchronously with the bearing inner ring 1, and the seal lip 51 always keeps sealing contact with the spherical surface of the seal retainer 6 no matter the seal lip rotates to any angle.
Correspondingly, the rotating sleeve 3 is provided with a spherical surface, which is located in the position shown in fig. 2C and is used for sealing contact with the sealing lip 51 protruding from the multi-lip seal 5; the spherical surface has a center of rotation and a radius r that is the distance from the center of rotation to the sealing connection point of the seal lip 51. The spherical surface C and the spherical surface B are symmetrical in position and are respectively used for sealing contact with the sealing lips 51 of the two multi-lip sealing rings 5.
The rotating sleeve 3 and the sealing retainer ring 6 can play a role in protection and prevent external impurities such as particles from entering the bearing. Under the abominable operating mode, protect the inside granule that receives of bearing and strike, outside heavy object impact.
According to the invention, through the three spherical surfaces A, B, C, the interference during the aligning rotation is avoided, and the effective sealing is always kept, so that the bearing can be aligned within the range of 4 degrees around the central circumferential direction of the bearing, and the adjusting range of the bearing is larger compared with that of the traditional aligning bearing. But seal structure aligning can realize that the sealed effect is unchangeable under eccentric state.
As shown in fig. 4 and 5, a front view and a top view of the self-aligning rolling bearing according to the present invention are respectively shown; the bearing outer ring 2 is arranged in the bearing seat 7, and the bearing seat 7 and the bearing outer ring 2 are axially positioned and connected through a hole by an elastic retainer ring 71; the inner wall of the bearing seat 7 is provided with an installation groove, the hole circlip 71 is clamped in the installation groove of the inner wall of the bearing seat 7 to play a role in axial positioning, and the side surface of the outer ring of the bearing is matched with the hole circlip 71 to realize positioning. The form of the bearing seat can be a flange plate type seat, a square seat, an annular seat, a sliding block seat, a movable frame and various bearing seats according to working conditions besides the vertical seat; the bearing seat can be integrally cast, the processing is convenient, the process is shortened, and the precision of the bearing seat surface is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A rotating self-aligning roller bearing comprises a bearing inner ring (1) and a bearing outer ring (2) which can relatively rotate to adjust the axial angle, and is characterized in that the bearing inner ring (1) is rotatably connected with a rotating sleeve (3) by taking an axial central line as a rotation center, and the axial positions of the rotating sleeve (3) and the bearing inner ring (1) are kept relatively fixed;
the rotary sleeve (3) is in threaded connection with the unloading sleeve (4), and the rotary sleeve (3) can drive the unloading sleeve (4) to move axially when rotating; the first end of the withdrawal sleeve (4) can stretch into the bearing inner ring (1), and the pipe wall thickness of the withdrawal sleeve (4) is gradually increased from the first end to the second end.
2. Rotating self-aligning roller bearing according to claim 1, characterized in that the rotating sleeve (3) is provided with an internal thread and the stripper sleeve (4) is provided with an external thread, the stripper sleeve (4) being insertable within the rotating sleeve (3).
3. Rotating self-aligning roller bearing according to claim 2, characterized in that one end of the rotating sleeve (3) axially protrudes beyond the bearing inner ring (1), the internal thread of the rotating sleeve (3) being provided at the protruding section.
4. Self-aligning roller bearing according to claim 3, characterized in that the second end of the rotating sleeve (3) is fitted with a stop ring (31) by means of a fixing screw (32), the stop ring (31) remaining axially fixed relative to the stripper sleeve (4).
5. Self-aligning roller bearing according to claim 4, characterized in that the bearing inner ring (1) and the rotating sleeve (3) are held in an axially aligned connection by a circlip (11) for the shaft.
6. The self-aligning rotary roller bearing according to any one of claims 1 to 5, wherein a multi-lip seal ring (5) is fixedly mounted at each end of the outer bearing ring (2), an inner ring of the multi-lip seal ring (5) is in sealing contact with an outer surface of the inner bearing ring (1), and a position where the outer surface of the inner bearing ring (1) is in contact with the multi-lip seal ring (5) is set to be a spherical surface; the spherical surface takes the rotation center as the circle center and takes the distance from the rotation center to the inner ring of the multi-lip sealing ring (5) as the radius.
7. The self-aligning roller bearing according to claim 6, wherein the multi-lip seal (5) is fixed to an end face of the bearing outer ring (2) in a snap fit manner.
8. The self-aligning roller bearing according to claim 6, wherein a sealing collar (6) is fixedly mounted at a first end of the bearing inner race (1), the sealing collar (6) is provided with a spherical surface, and the spherical surface is used for being in sealing contact with a sealing lip (51) which is convexly arranged on the multi-lip sealing ring (5); the spherical surface takes the revolution center as the circle center and takes the distance from the revolution center to the sealing connection point of the sealing lip (51) as the radius.
9. Rotating self-aligning roller bearing according to claim 6, characterized in that the rotating sleeve (3) is provided with a spherical surface for sealing contact with a sealing lip (51) provided protruding on the multi-lip sealing ring (5); the spherical surface takes the revolution center as the circle center and takes the distance from the revolution center to the sealing connection point of the sealing lip (51) as the radius.
10. Self-aligning roller bearing according to claim 6, characterized in that the outer bearing ring (2) is mounted in a bearing seat (7), the bearing seat (7) and the outer bearing ring (2) being held in axial positioning connection by a circlip (71) through a hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210338931.7A CN114607699A (en) | 2022-04-01 | 2022-04-01 | Rotary self-aligning roller bearing |
Applications Claiming Priority (1)
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| CN202210338931.7A CN114607699A (en) | 2022-04-01 | 2022-04-01 | Rotary self-aligning roller bearing |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685650A (en) * | 1996-01-16 | 1997-11-11 | Allen-Bradley Company, Inc. | Bearing assembly utilizing improved clamping arrangement |
| US20030037438A1 (en) * | 2001-08-24 | 2003-02-27 | Nisley Donald L. | System and method for mounting a shaft within a hollow member |
| CN104653638A (en) * | 2015-02-16 | 2015-05-27 | 浙江浙矿重工股份有限公司 | Shaft locating structure |
| CN110566578A (en) * | 2019-10-08 | 2019-12-13 | 福建福山轴承有限公司 | Spherical roller bearing |
-
2022
- 2022-04-01 CN CN202210338931.7A patent/CN114607699A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685650A (en) * | 1996-01-16 | 1997-11-11 | Allen-Bradley Company, Inc. | Bearing assembly utilizing improved clamping arrangement |
| US20030037438A1 (en) * | 2001-08-24 | 2003-02-27 | Nisley Donald L. | System and method for mounting a shaft within a hollow member |
| CN104653638A (en) * | 2015-02-16 | 2015-05-27 | 浙江浙矿重工股份有限公司 | Shaft locating structure |
| CN110566578A (en) * | 2019-10-08 | 2019-12-13 | 福建福山轴承有限公司 | Spherical roller bearing |
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