CN2835690Y

CN2835690Y - Needle locking mechanism for cylindrical roller bearing

Info

Publication number: CN2835690Y
Application number: CN 200520076001
Authority: CN
Inventors: 蒋惠明; 孙佳伟; 张松
Original assignee: Changzhou Guangyang Bearing Co Ltd
Current assignee: Changzhou Guangyang Bearing Co Ltd
Priority date: 2005-09-30
Filing date: 2005-09-30
Publication date: 2006-11-08
Anticipated expiration: 2015-09-30

Abstract

The utility model relates to needle locking mechanism for a cylindrical roller bearing, which comprises a plurality of retainers of pocket holes, which are uniformly distributed in a circumferential direction, and rolling posts arranged in the pocket holes of the retainers, wherein both axial end surfaces of each rolling post are provided with positioning holes which are inwards concave. The pocket holes of the retainers are positioned on convex shoulders which extend into the positioning holes arranged at both axial side surfaces of each rolling post. Both end surfaces of each rolling post are limited through both ends of each pocket hole of each retainer, and the utility model has the advantages of simple structure and easy processing, and has favorable lubricating property. Because of reducing the sinkage capacity of the rolling posts, the assembly quality of the bearing can be ensured, the moving state of the retainers is improved, and the abrasions of the retainers are reduced. The utility model solves the assembly problem of a separated type bearing, and the service life of the cylindrical roller bearing can be improved.

Description

The purl mechanism of roller bearing

Technical field

The utility model relates to a kind of roller bearing, especially relates to a kind of purl mechanism of roller bearing.

Background technique

Roller bearing is made of inner ring, outer ring, roller and retainer, and roller is arranged in the retainer.The retainer of roller bearing mainly contains the copper cage of retainer, engineering plastics cage and the car system of the drawing of steel plate grooved.The advantage of engineering plastics have in light weight, shock-resistant and antivibration and noise reduction, but exist defectives such as intensity is low, resistance to heat difference.And copper cage by keeping stand and retainer lid to assemble, has good wear resistance after machining, but exists defectives such as quality is big, manufacture cost is high, take up room big, poor lubrication.The retainer of above-mentioned two kinds of structures, roller are installed in the pocket hole of retainer, and it is spacing to be that inside and outside fore shaft by pocket hole lintel carries out roller, and therefore, the roller bearing of this class formation is had relatively high expectations to the assembly precision of retainer and roller.Though the retainer of being made by the punching press of steel plate grooved has advantages such as easy to process, that weight is moderate, but the roller of this kind structure is the lock point by both sides, pocket hole end face to carry out spacing to roller, because the lock point is between the outside of each adjacent two roller, so easily cause the sinking of roller, when bearing moved, the motion state of retainer was good and quicken the abrasion of retainer.On the other hand, very difficult during user installation for the on-the-spot split type roller bearing that inner ring is installed of need because the deflection of roller is big, make that assembly quality is difficult for guaranteeing, and influence the working life of bearing.

Summary of the invention

The utility model is the deficiency that overcomes above-mentioned technology, provides a kind of simple in structure, easy to process, easily guarantees the purl mechanism of the roller bearing of assembly quality.

For solving the technical problem of above-mentioned existence, the utility model adopts following technical proposals: a kind of purl mechanism of roller bearing, the retainer and the roller that is arranged in each pocket hole of retainer that comprise circumferentially uniform a plurality of pockets hole, it is characterized in that: described roller axle to both ends of the surface be equipped with the positioning hole of indent, each pocket hole of retainer is positioned at roller axle and has the convex shoulder that extends to positioning hole to bi-side.

Wherein:

Positioning hole on the both ends of the surface of described roller is blind hole or through hole.

The wall thickness of described retainer is between 1.2mm～3mm.

The utility model carries out spacing, simple in structure to the both ends of the surface of roller with the both ends of the surface in retainer pocket hole, because the convex shoulder and the positioning hole surface of contact on the roller both ends of the surface of the both ends of the surface in pocket hole are little, therefore can not influence the normal lubricated of bearing.Simultaneously, also the convex shoulder because of pocket hole both ends of the surface directly positions the two ends of roller, has reduced the deflection of roller effectively, and has improved the retainer motion state, reduces the wearing and tearing of retainer.The utility model is that the both ends of the surface with retainer pocket hole are stamped in the positioning hole of roller, manufacturing process is simple, easy to process, can guarantee the assembly quality of bearing, especially the split type bearing that need are located to install the user, adopt purl of the present utility model mechanism, the user can easily be installed on the inner ring of bearing, solved the assembling difficult problem of split type bearing.Moreover retainer of the present utility model can adopt thickness of slab to process greater than the steel plate more than the 1.2mm, further improves the mechanical strength of retainer.Therefore adopt the roller bearing of the utility model purl mechanism to have than the roller bearing that adopts copper cage that the space of occupying is little, lubricating condition good, advantages such as centrifugal force is little, advantages such as and ratio adopts the roller bearing intensity height of engineering plastics cage, and is ageing-resistant.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is one of structural representation of the present utility model.

Fig. 2 is two of a structural representation of the present utility model.

Fig. 3 is three of a structural representation of the present utility model.

Fig. 4 is four of a structural representation of the present utility model.

Fig. 5 is the structural representation of the utility model retainer.

Fig. 6 is that the A of Fig. 5 is to structural representation.

Wherein: 1-outer ring; 2-retainer; 2-1-pocket hole; 2-2-convex shoulder; 3-roller; 3-1-positioning hole; 4-inner ring.

Embodiment

The purl mechanism of the utility model roller bearing shown in Fig. 1～4, comprise the retainer 2 of circumferentially uniform a plurality of pockets hole 2-1 and be arranged on the interior roller 3 of retainer 2 each pocket hole 2-1, these roller 3 axial both ends of the surface are equipped with the positioning hole 3-1 of indent, see shown in Fig. 5-6, this retainer 2 each pocket hole 2-1 are positioned at roller 3 axial bi-side and have the convex shoulder 2-2 that extends to positioning hole 3-1, the wall thickness of this retainer 2 is between 1.2mm～3mm, can improve the mechanical strength of the retainer 2 of steel plate grooved drawing, by the convex shoulder 2-2 on the retainer 2 roller 3 is positioned, make retainer 2 and roller 3 constitute stable coupled condition.

The positioning hole 3-1 of roller 3 its both ends of the surface of the present utility model can be a blind hole as Figure 1-3, perhaps be illustrated in figure 4 as through-hole structure, and the convex shoulder 2-2 of 2-1 bi-side, pocket hole is arranged on the axis top of roller 3 positioning hole 3-1, as shown in Figure 1, the convex shoulder 2-2 of retainer 2 is that upside hole wall with positioning hole 3-1 matches; The utility model also can be as shown in Figure 2, and the convex shoulder 2-2 on the 2-1 bi-side, pocket hole is arranged on the axis bottom of roller 3 positioning hole 3-1, and the convex shoulder 2-2 of retainer 2 and the downside hole wall of positioning hole 3-1 match, and reach the purpose of purl.

The purl mechanism of roller bearing of the present utility model can independently use, also can be with inner ring 4 or/and outer ring 1 assembling.Roller bearing as shown in Figure 1, roller 3 only are arranged in the outer ring 1, and the rib of 1 both sides, outer ring and the both sides of roller 3 join.Perhaps, as shown in Figure 2, roller 3 only is arranged in the inner ring 4, and the rib of inner ring 4 both sides and the both sides of roller 3 join.Roller bearing as shown in Figure 3, the roller 3 that is locked by retainer 2 is arranged in outer ring 1 and the inner ring 4, and the rib of 1 both sides, outer ring and the both sides of roller 3 join, and inner ring 4 one sides and roller 3 join, and opposite side is provided with loose rib.Roller bearing that also can be as shown in Figure 4, basic identical with structure shown in Figure 1, different is that roller 3 is through hole.

Claims

1, a kind of purl mechanism of roller bearing, comprise the retainer (2) in circumferentially uniform a plurality of pockets hole (2-1) and be arranged on the interior roller (3) in each pocket hole (2-1) of retainer (2), it is characterized in that: the axial both ends of the surface of described roller (3) are equipped with the positioning hole (3-1) of indent, and each pocket hole (2-1) of retainer (2) is positioned at roller (3) and axially has the convex shoulder (2-2) that extends to positioning hole (3-1) in bi-side.

2, the purl mechanism of roller bearing according to claim 1 is characterized in that: the positioning hole (3-1) of described roller (3) both ends of the surface is blind hole or through hole.

3, the purl mechanism of roller bearing according to claim 1 and 2, it is characterized in that: the convex shoulder (2-2) of bi-side, described pocket hole (2-1) is arranged on the axis top of roller (3) positioning hole (3-1), and the upside hole wall of convex shoulder (2-2) and positioning hole (3-1) matches.

4, the purl mechanism of roller bearing according to claim 1 and 2, it is characterized in that: the convex shoulder (2-2) of bi-side, described pocket hole (2-1) is arranged on the axis bottom of roller (3) positioning hole (3-1), and the downside hole wall of convex shoulder (2-2) and positioning hole (3-1) matches.

5, the purl mechanism of roller bearing according to claim 1 is characterized in that: the wall thickness of described retainer (2) is between 1.2mm～3mm.