CN218760905U - Eccentric roller bearing - Google Patents

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 Bearings

technical field

The utility model relates to an eccentric roller bearing.

Background technique

Bearings are the most widely used mechanical parts in various industries. Different bearing types and bearing sizes need to be used under various working conditions. In cam drives, machine tool guide rails, transmission equipment, etc., roller bearings are required. In some occasions Among them, it is necessary to realize the curved motion, such as the vibration of the impact motion, the reciprocating motion of the plunger of the oil pump, the reciprocating motion of the crank linkage mechanism, etc. At present, there is a lack of eccentric full rolling element roller bearings to realize this motion. The current roller Bearing capacity is weak, and it is difficult to realize eccentric cam transmission, which does not meet the requirements of eccentric movement in certain occasions.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides an eccentric roller bearing.

In order to achieve the above purpose, the utility model provides an eccentric roller bearing, which includes an outer ring, an inner ring, and a rolling body arranged between the outer ring and the inner ring. The shaft includes a connecting part that is installed and driven with the inner ring, and a driving part that is arranged at both ends of the connecting part in the axial direction and is connected with external equipment such as a frame. The two driving parts are coaxially arranged. Compared with the two driving parts, the connecting part The center of the connecting part is set eccentrically. The axis of the connecting part is not coaxial with that of the driving part. A ring-shaped positioning part is arranged at the connection between the connecting part and one of the driving parts. The ring-shaped positioning part corresponds to the inner ring. One end of the axial direction is positioned and installed.

The beneficial effects of the utility model are: the structure of the utility model can be positioned by the ring-shaped positioning part during installation through the inner ring and the mandrel tightly matched with it, and the abutment positioning is performed by the ring-shaped positioning part and the axial end of the inner ring , so as to install the bearing, the inner ring is driven to rotate through the connecting part where the mandrel and the inner ring are installed and driven, and the driving part connected to the external equipment such as the frame. The connecting part is set eccentrically compared with the two driving parts. During the rotation process, the eccentric rotation of the connecting part can be carried out. After the bearing is assembled, the whole bearing has a certain eccentricity relative to the connecting part of the mandrel (that is, the installation center), so as to realize the eccentric movement of the bearing, which has a large load capacity. , and the eccentric reciprocating motion of the cam can be realized.

Further, the outer ring is provided with annular embedding grooves on both sides of the rolling element installation position, and the embedding grooves are embedded with elastic opening stop pins, and the opening stop pins can be installed through the interference of the opening into the embedded groove, and limit the axial position of the rolling elements in the outer ring.

By adopting the above technical solution, the embedded groove can be embedded with an elastic opening stop pin, and the opening stop pin can be interference-fitted into the embedded groove from the openings of the outer ring and the inner ring, thereby locking the rolling elements The axial position on the outer ring prevents rolling offset of rolling elements caused by no fixed limit and ensures the normal operation of the bearing.

Further, the opening stopper is L-shaped, the opening includes an embedded end installed in the embedded groove, and an extension end extending toward the opening, and the extended end abuts against the connecting part of the embedded end On the rolling body, the connecting parts of the two cotter pins cooperate to limit the position.

By adopting the above technical solution, the shape of the opening retaining pin is L-shaped, wherein the embedded end is collapsed into the embedded groove, and its extended end can be fitted with the outer ring, and its connecting part is in contact with the rolling body, which can be In the axial direction, the rolling body is prevented from falling out, and the connecting part can prevent the rolling body from having a certain elastic variable when installing the outer ring, so as to prevent the rolling body and the outer ring from being damaged.

Further, the connecting portion is provided with a raceway in the circumferential direction, and corresponding to the raceway, the inner ring is provided with a protrusion that is fitted and guided with the raceway.

By adopting the above technical solution, the raceway is circumferentially arranged on the peripheral wall of the connecting part of the mandrel, and the bump and the raceway arranged on the inner ring prevent the installation deviation of the mandrel and the inner ring, and the bumps are raised. To a certain positioning effect, the mandrel and the inner ring maintain a relative position, thereby stabilizing the eccentric rotation of the bearing.

Further, one end of the inner ring is provided with a flanging edge, and the end of the inner ring provided with the flanging is positioned to cooperate with the ring-shaped positioning member. Compared with the other end of the inner ring, a retaining ring is provided, so that The retaining ring is fixed on the mandrel by tight fit and cooperates with the flange to block the rolling body.

By adopting the above technical solution, the hem provided at one end of the inner ring facilitates the installation of the rolling body, the rolling body can be installed through the other end of the inner ring, the hem can determine the installation position of the rolling body, improve the installation efficiency, and block The edge and the ring-shaped locating member are positioned to install the mandrel, and the retaining ring cooperates with the folded edge to prevent the rolling body from coming out, and the retaining ring can also block the inner ring from coming out.

Further, the mandrel is provided with a lubricating hole and a lubricating groove on the driving part for lubricating the rotation of the bearing.

By adopting the above technical scheme, the two ends of the mandrel are connected with external equipment such as the frame, and the lubricating holes and lubricating grooves are provided to facilitate the lubricating of the bearings.

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

By adopting the above technical solution, the outer ring is suitable for rolling on the guide rail as a roller, so as to realize the eccentric reciprocating motion of the cam.

Description of drawings

Fig. 1 is the structural representation in the utility model embodiment;

Fig. 2 is the structural representation of mandrel in the utility model embodiment;

Fig. 3 is a partially enlarged view of part A in Fig. 1 .

Detailed ways

The following is a further description of the embodiment of the utility model in conjunction with the accompanying drawings: as shown in Figure 1-3, the eccentric roller bearing includes an outer ring 1, an inner ring 2, and a rolling element 3 arranged between the outer ring 1 and the inner ring 2. The inner ring 2 is provided with a mandrel 4 that is closely matched with it, and the mandrel 4 includes a connecting part 5 that is installed and driven in cooperation with the inner ring 2, and is arranged at both ends of the connecting part 5 in the axial direction and connected with external equipment such as a frame. The driving part 6, the two driving parts 6 are coaxially arranged, the connecting part 5 is eccentrically arranged compared with the two driving parts 6, the axis center of the connecting part 5 is not coaxial with the axis center of the driving part 6, and the A ring-shaped positioning piece 7 is provided at the joint between the connecting portion 5 and one of the driving portions 6 , and the ring-shaped positioning piece 7 is positioned and installed corresponding to one end of the inner ring 2 in the axial direction. The mandrel is an eccentric shaft, and there is a certain amount of eccentricity between the middle diameter part and the two end diameter parts.

The outer ring 1 is provided with annular embedded grooves 8 on both sides of the installation position of the rolling elements 3, and the embedded grooves 8 are embedded with elastic opening stop pins 9, and the opening stop pins 9 can pass through the openings. The interference is installed in the embedded groove 8, and the axial position of the rolling element 3 in the outer ring 1 is limited. A mating connection between the mandrel 4 and the inner ring 2 can be provided with a keyway and a key, so that the mandrel 4 and the inner ring 2 form a tight fit.

The opening stop pin 9 is L-shaped, and the opening includes an embedded end 10 arranged in the embedded groove 8 and an extension end 11 extending toward the opening. The extension end 11 and the embedded end 10 The connecting part abuts on the rolling body 3, and the connecting parts of the two opening stopper pins 9 cooperate to limit the position.

The connecting portion 5 is provided with a raceway 12 in the circumferential direction, and the inner ring 2 is provided with a protrusion 13 corresponding to the raceway 12 that is fitted and guided with the raceway 12 . The working positions of the inner ring 2 and the mandrel 4 can be restricted and kept consistent, so as to prevent the driving vibration and instability caused by the assembly deviation of the inner ring 2 .

One end of the inner ring 2 is provided with a flanging 14, and the end of the inner ring 2 provided with the flanging 14 is positioned and matched with the annular positioning member 7. Compared with the other end of the inner ring 2, the other end of the inner ring 2 is provided with a A retaining ring 16, said retaining ring 16 is fixed on the mandrel 4 through a tight fit and cooperates with the flange 14 to block the rolling body 3.

The opening stop pin 9 is in clearance fit with the inner ring 2 and in clearance fit with the retaining ring 16 to prevent friction during rotation.

As shown in FIG. 2 , the eccentricity of the connecting portion 5 relative to the two driving portions 6 is e.

The mandrel 4 is provided with a lubricating hole 15 and a lubricating groove for lubricating the rotation of the bearing on the driving part 6 . A storage space for internal grease is formed, and the lubricating hole 15 and the lubricating groove can be filled with oil to facilitate the rotation lubrication of the drive bearing.

The outer peripheral wall of the outer ring 1 is spherical. The outer ring 1 is suitable for rolling on the guide rail as a roller. Realize the eccentric cam drive to meet the requirements of eccentric movement in certain occasions.

The above embodiment is only one of the preferred specific embodiments of the utility model, and the usual changes and replacements performed by those skilled in the art within the scope of the technical solution of the utility model are included in the protection scope of the utility model.

Claims (7)

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.

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