CN218760905U

CN218760905U - Eccentric roller bearing

Info

Publication number: CN218760905U
Application number: CN202223234441.7U
Authority: CN
Inventors: 方国斌
Original assignee: Wenzhou Renben Motor Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Wenzhou Renben Motor Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-03-28
Anticipated expiration: 2032-12-01

Abstract

The utility model provides an eccentric gyro wheel bearing, including outer lane, inner circle, the rolling element of setting between outer lane and inner circle, the inner circle is provided with rather than the dabber of tight fit, the dabber includes with inner circle cooperation installation driven connecting portion, sets up the drive division of being connected at connecting portion axial both ends and with external equipment such as frames, the coaxial setting of two drive divisions, connecting portion compare in two drive division eccentric settings, the axle center of connecting portion and the axle center disalignment of drive division, connecting portion are provided with cyclic annular setting element with the junction of one of them drive division, the axial one end location installation of the corresponding inner circle of cyclic annular setting element, connecting portion compare in two drive division eccentric settings, can carry out the eccentric rotation of connecting portion in the rotation process, and the back has just been assembled to make whole bearing have certain off-centre to realize the eccentric motion of bearing, existing load carrying capacity is big, can realize the eccentric reciprocating motion of cam again.

Description

Eccentric roller bearing

Technical Field

The utility model relates to an eccentric gyro wheel bearing.

Background

The bearing is the most widely used mechanical part in various industries, different bearing types and bearing sizes are required to be used under various working conditions, the roller bearing is required to be used in cam transmission, machine tool guide rails, transmission equipment and the like, and in some occasions, curvilinear motion is required to be realized, such as vibration of impact motion, reciprocating motion of pushing an oil pump plunger, reciprocating rotary motion of a crank link mechanism and the like.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides an eccentric gyro wheel bearing.

In order to achieve the above object, the utility model provides an eccentric gyro wheel bearing, including outer lane, inner circle, the rolling element of setting between outer lane and inner circle, the inner circle is provided with rather than the dabber of tight fit, the dabber includes the connecting portion of installing driven with the inner circle cooperation, sets up the drive division of being connected at connecting portion axial both ends and with external equipment such as frames, the coaxial setting of two drive divisions, connecting portion compare in two drive division eccentric settings, the axle center of connecting portion and the axle center disalignment of drive division, connecting portion are provided with cyclic annular setting element with the junction of one of them drive division, the axial one end location installation that cyclic annular setting element corresponds the inner circle.

The utility model has the advantages that: the utility model discloses the structure passes through the inner circle and rather than the dabber of tight fit, can carry out the butt location through cyclic annular setting element location when the installation, through the axial one end of cyclic annular setting element with the inner circle to carry out the installation of bearing, through dabber and the outside equipment connection such as inner circle cooperation installation driven connecting portion, with the frame drive the inner circle and rotate, connecting portion compare in two drive division eccentric settings, can carry out the eccentric rotation of connecting portion at the rotation in-process, and the bearing assembles the back, just makes whole bearing have certain off-centre for the connecting portion of dabber (installation center promptly), thereby realizes the eccentric motion of bearing, and existing load-carrying capacity is big, can realize the eccentric reciprocating motion of cam again.

Furthermore, the outer ring is provided with annular embedded grooves on two sides of the installation position of the rolling body, the embedded grooves are embedded with elastic split stop pins, and the split stop pins can be installed in the embedded grooves through the split interference and limit the axial position of the rolling body in the outer ring.

Through adopting above-mentioned technical scheme, the inlay groove can inlay and be equipped with elastic split stop pin, split stop pin can follow the opening part interference installation of outer lane and inner circle and inlay the inslot to the axial position of locking rolling element on the outer lane prevents the rolling skew of rolling element because of not having fixed spacing to lead to, has guaranteed the normal operating of bearing.

Furthermore, the split stop pin is L-shaped, the opening comprises an embedded end embedded in the embedded groove and an extending end extending towards the opening, the extending end and a connecting part of the embedded end abut against the rolling body, and the connecting parts of the two split stop pins are matched for limiting.

By adopting the technical scheme, the split stop pin is L-shaped, the embedded end is tightly collapsed in the embedded groove, the extending end can be installed in cooperation with the outer ring, the connecting part is abutted to the rolling body, the rolling body can be prevented from falling off in the axial direction, and the connecting part can prevent a certain elastic variable when the rolling body and the outer ring are installed, so that the rolling body and the outer ring are prevented from being damaged.

Furthermore, the connecting part is circumferentially provided with a roller path, and the inner ring is provided with a lug which is matched with the roller path for installation and guiding corresponding to the roller path.

By adopting the technical scheme, the roller path is circumferentially arranged on the peripheral wall of the connecting part of the mandrel, the lug and the roller path arranged on the inner ring prevent the mandrel and the inner ring from being installed and deviated, and the lug has a certain positioning effect, so that the mandrel and the inner ring keep relative positions, and the eccentric rotation of the bearing is stabilized.

Furthermore, one end of the inner ring is provided with a folded edge, the end part of the inner ring provided with the folded edge is in positioning fit with the annular positioning piece, the other end of the inner ring, which is opposite to the folded edge, is provided with a retaining ring, and the retaining ring is fixed on the mandrel through tight fit and is matched with the folded edge to block the rolling body.

Through adopting above-mentioned technical scheme, the hem that inner circle one end set up makes things convenient for the installation of rolling element, and the rolling element can be through the other end installation rolling element of inner circle, and the mounted position of rolling element can be confirmed to the hem, improves the installation effectiveness to flange and cyclic annular setting element location installation dabber, the retaining ring cooperation hem blocks deviating from of rolling element, and the retaining ring can also block deviating from of inner circle.

Further, the mandrel is provided with a lubricating hole and a lubricating groove which are used for lubricating the bearing to rotate in the driving part.

Through adopting above-mentioned technical scheme, the dabber both ends are connected with external equipment such as frame, and the lubrication hole and the lubrication groove of seting up make things convenient for the lubrication of bearing.

Further, the outer peripheral wall of the outer ring is a spherical surface.

By adopting the technical scheme, the outer ring is suitable for rolling on the guide rail as the roller, so that the eccentric reciprocating motion of the cam is realized.

Drawings

Fig. 1 is a schematic structural diagram in an embodiment of the present invention;

fig. 2 is a schematic structural view of a mandrel according to an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a of fig. 1.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings: as shown in fig. 1-3, the eccentric roller bearing includes an outer ring 1, an inner ring 2, and a rolling element 3 disposed between the outer ring 1 and the inner ring 2, the inner ring 2 is provided with a mandrel 4 tightly fitted with the inner ring 2, the mandrel 4 includes a connecting portion 5 installed and driven in cooperation with the inner ring 2, driving portions 6 disposed at two axial ends of the connecting portion 5 and connected with external devices such as a rack, the two driving portions 6 are coaxially disposed, the connecting portion 5 is eccentrically disposed compared with the two driving portions 6, an axis of the connecting portion 5 is not coaxial with an axis of the driving portion 6, an annular positioning element 7 is disposed at a connection position of the connecting portion 5 and one of the driving portions 6, and the annular positioning element 7 is installed in a position corresponding to one axial end of the inner ring 2. The mandrel is an eccentric shaft, and the middle diameter part and the two end diameter parts have certain eccentric amount.

The outer ring 1 is provided with annular embedded grooves 8 on two sides of the installation position of the rolling body 3, the embedded grooves 8 are embedded with elastic split stop pins 9, and the split stop pins 9 can be installed in the embedded grooves 8 through split interference and limit the axial position of the rolling body 3 in the outer ring 1. The mandrel 4 and the inner ring 2 can be provided with a key groove and a key which are matched and connected, so that the mandrel 4 and the inner ring 2 form tight fit.

The split stop pins 9 are L-shaped, the opening comprises an embedded end 10 embedded in the embedded groove 8 and an extending end 11 extending towards the opening, the connecting part of the extending end 11 and the embedded end 10 abuts against the rolling body 3, and the connecting parts of the two split stop pins 9 are matched for limiting.

The connecting part 5 is circumferentially provided with a raceway 12, and the inner ring 2 is provided with a lug 13 which is matched with the raceway 12 for installation and guiding. The positions of the inner ring 2 and the mandrel 4 during working can be limited and kept consistent, and unstable driving shaking generated when the inner ring 2 is assembled and deviated is prevented.

One end of the inner ring 2 is provided with a folded edge 14, the end part of the inner ring 2 provided with the folded edge 14 is matched with the annular positioning piece 7 in a positioning mode, the other end, compared with the folded edge 14, of the inner ring 2 is provided with a retaining ring 16, and the retaining ring 16 is fixed on the core shaft 4 through tight fit and matched with the folded edge 14 to retain the rolling body 3.

The split stop pin 9 is in clearance fit with the inner ring 2 and in clearance fit with the stop ring 16, preventing friction during rotation.

As shown in fig. 2, the connecting portion 5 is eccentric by an amount e compared to the two driving portions 6.

The spindle 4 is provided with a lubrication hole 15 and a lubrication groove for lubricating the rotation of the bearing in the driving portion 6. The storage space of inside grease is formed, the lubrication hole 15 and the lubrication groove can be filled with oil, and the drive bearing is convenient to rotate and lubricate.

The periphery wall of the outer ring 1 is a spherical surface. The outer ring 1 is suitable for rolling on a guide rail as a roller. Realize eccentric cam drive, satisfy the requirement that certain occasion needs eccentric motion.

The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. An eccentric roller bearing characterized by: including outer lane, inner circle, setting rolling element between outer lane and inner circle, the inner circle is provided with rather than the dabber of tight fit, the dabber include with inner circle cooperation installation driven connecting portion, set up at connecting portion axial both ends and with the drive division of external equipment such as frames being connected, the coaxial setting of two drive divisions, connecting portion compare in two drive division eccentric settings, the axle center of connecting portion is not coaxial with the axle center of drive division, connecting portion are provided with cyclic annular setting element with the junction of one of them drive division, the axial one end location installation of the corresponding inner circle of cyclic annular setting element.

2. The eccentric roller bearing of claim 1, wherein: the outer ring is provided with annular embedded grooves on two sides of the installation position of the rolling body, the embedded grooves are embedded with elastic split stop pins, and the split stop pins can be installed in the embedded grooves through split interference and limit the axial position of the rolling body in the outer ring.

3. The eccentric roller bearing of claim 2, wherein: the split stop pin is L-shaped, the opening comprises an embedded end embedded in the embedded groove and an extending end extending towards the opening, the extending end and a connecting part of the embedded end abut against the rolling body, and the connecting parts of the two split stop pins are matched for limiting.

4. The eccentric roller bearing of claim 2, wherein: the connecting part is circumferentially provided with a raceway, and the inner ring is provided with a lug which is matched with the raceway for installation and guiding.

5. The eccentric roller bearing of claim 3, wherein: the rolling bearing is characterized in that one end of the inner ring is provided with a folded edge, the end part of the inner ring, which is provided with the folded edge, is in positioning fit with the annular positioning piece, the other end of the inner ring, which is compared with the folded edge, is provided with a check ring, and the check ring is fixed on the mandrel through tight fit and is matched with the folded edge to block the rolling body.

6. The eccentric roller bearing of claim 2, wherein: the mandrel is provided with a lubricating hole and a lubricating groove which are used for lubricating the bearing to rotate in the driving part.

7. The eccentric roller bearing of claim 2, wherein: the periphery wall of outer lane is the sphere.