CN201368130Y

CN201368130Y - Cylindrical roller bearing engineering plastic cage

Info

Publication number: CN201368130Y
Application number: CNU2009201061721U
Authority: CN
Inventors: 刁克军; 刘凤山; 戴树林; 潘安徽
Original assignee: BEIJING LONGXUAN RUBBER Co Ltd
Current assignee: BEIJING LONGXUAN RUBBER Co Ltd
Priority date: 2009-03-13
Filing date: 2009-03-13
Publication date: 2009-12-23
Anticipated expiration: 2019-03-13

Abstract

The utility model discloses a cylindrical roller bearing engineering plastic cage, which comprises two circular ring beams and a plurality of window beams evenly and circularly connected between the two ring beams, window holes are arranged between two adjacent window beams, and the inside diameter side of the window beam is provided with convex plate lock mouths for limiting a roller, wherein the outside diameter surface of the ring beam is evenly and discontinuously provided with a plurality of convex plates; each convex plate corresponds to one window hole; ring beam outside diameter surface grooves are formed between the adjacent convex plates; the outer end face of the ring beam is provided with a circle of groove; reinforcing ribs are evenly distributed in the groove; the outside diameter surface of the window beam is provided with window beam grooves; and an oil guide groove is arranged at the intersecting part of the contact surface of the window beam roller and the inner end face of the ring beam. In the utility model, the deformation of the cage can be reduced, the mechanical property of the cage can be improved, and the service life of the cage can be prolonged; the material is saved, the weight is reduced, the operating speed of the bearing and even distribution of the grease can be improved, particularly good contact between the convex plate of the ring beam outside diameter surface of the cage and the outer ring inside diameter support surface of the bearing is ensured, the lubrication status is improved, and the wear of the outer ring of the bearing is reduced.

Description

Cylindrical roller bearing engineering plastics cage

Technical field

The utility model relates to the engineering plastics cage that adopts Shooting Technique to form, especially a kind of cylindrical roller bearing engineering plastics cage.

Background technique

Present engineering plastics cylindrical roller retainer is by two circular collar tie beams and the some window beams that are connected between two collar tie beams are made into integration with evenly being periphery, and the internal side diameter of window beam is shaped on the fore shaft of restriction roller, forms fenestra between the adjacent two window beams.There is following defective in this structure:

At first, the window beam directly intersects together with the fore shaft of window beam and the collar tie beam of both sides, makes collar tie beam very slightly thick, relatively waste material.Present engineering plastics cylindrical roller retainer adopts Shooting Technique to make more, because the narrow limitation of technology and raw material self can cause retainer very easily to occur at the heavy wall position shrinking uneven phenomenon, thereby cause the retainer distortion and influence the dimensional accuracy of retainer.

In addition, the outer diametric plane of collar tie beam can contact with the internal diameter supporting surface of bearing outer ring in the bearing operation process, but the passage that does not have lubricant grease because of the outer diametric plane of collar tie beam, therefore can't be the retainer collar tie beam outside the good oil film of formation between diametric plane and the bearing outer ring aperture surface, bearing outer ring internal diameter supporting surface wear problems takes place often, if and the impurity of the larger particles in the lubricant oil can not in time discharge, can cause excessive wear, can damage bearing outer ring ball track when serious.

The model utility content

In view of above-mentioned, the purpose of this utility model provides a kind of material of can saving and alleviates product weight, improves bearing operation speed, the kinetic friction wearing and tearing between retainer and the bearing outer ring can be reduced again, the cylindrical roller bearing engineering plastics cage of retainer mechanical property and dimensional stability can also be guaranteed.

For solving above-mentioned technical problem, the utility model adopts following technical proposals:

A kind of cylindrical roller bearing engineering plastics cage comprises two circular collar tie beams and is connected in some window beams between two collar tie beams with evenly being periphery that form fenestra between the adjacent two window beams, the internal side diameter of window beam is shaped on the fore shaft of restriction roller, wherein:

Some boss that evenly and discontinuously distribute on the outer diametric plane of described collar tie beam, the corresponding described fenestra of the boss of each collar tie beam forms the outer diametric plane groove of collar tie beam between the boss of adjacent two collar tie beams.

Further, the fore shaft of described window beam is made of the boss that the stage casing of the aperture surface of window beam extends internally out.

Again further, the stage casing of the outer diametric plane of described window beam has window beam groove.

Again further, the exterior edge face of described collar tie beam has groove, uniform stiffening rib in this groove.

Again further, oil guide slot is left in the joint of the side of described window beam and described collar tie beam interior edge face, forms oil circuit between the outer diametric plane groove of described collar tie beam and this oil guide slot.

The utlity model has following advantage:

Because the window beam is shaped on independently boss fore shaft, makes things convenient for bearing unit assembling effect so can play positioning roller;

Owing to be shaped on groove on the outer diametric plane of window beam, so can effectively reduce the contraction deformation of window beam, avoid subsurface defect to guarantee product size, can also store grease in the groove simultaneously,, prolongation bearing lubricated working life to strengthen;

Owing to form the outer diametric plane groove of collar tie beam between the adjacent lands on the outer diametric plane of collar tie beam, therefore, oil guide slot on outer diametric plane groove of collar tie beam and the collar tie beam interior edge face communicates on the one hand, can be better for the running of roller provides lubricant oil, it is good lubricated that outer diametric plane of retainer collar tie beam and bearing outer ring internal diameter supporting surface are formed; Can save material on the other hand, reduce product weight, useful to improving bearing operation speed;

Owing to be shaped on stiffening rib in the collar tie beam end face groove, so can improve the mechanical property of retainer, also can reduce the radial deformation of collar tie beam simultaneously, guarantee the retainer dimensional accuracy.

Description of drawings

Fig. 1 is structural representation of the present utility model (the B-B sectional view of Fig. 2);

Fig. 2 is structural representation of the present utility model (the A-A sectional view of Fig. 1);

Fig. 3 is fenestra and oil groove schematic representation;

Fig. 4 is stiffening rib schematic representation (G of Fig. 2 is to sectional view);

Fig. 5 is collar tie beam groove schematic representation (H of Fig. 1 is to sectional view).

Embodiment

Be described further below in conjunction with accompanying drawing.

As Fig. 1-shown in Figure 5, the utility model is a kind of cylindrical roller bearing engineering plastics cage, it comprises two circular collar tie beams 1 and is connected in some window beams 2 between two collar tie beams 1 with evenly being periphery, window beam 2 is divided equally the collar tie beam 1 of both sides at interval, form fenestra between the adjacent two window beams 2, the internal side diameter of window beam 2 is shaped on the fore shaft of restriction roller, and window beam 2 is made into integration by the Shooting Technique mode with collar tie beam 1.Wherein:

As shown in Figure 1 and Figure 4, some boss 12 that distribute equably on the outer diametric plane of collar tie beam 1, each boss 12 corresponding fenestra forms the outer diametric plane groove 11 of the collar tie beam with certain depth between adjacent two boss 12.

As shown in figures 1 and 3, the oil guide slot 3 of semicircle shape is left in the joint of the interior edge face 13 of the side 21 of window beam 2 (being the surface of contact of window beam and roller) and collar tie beam 1, forms unobstructed oil circuit between the oil guide slot 3 on outer diametric plane groove 11 of collar tie beam and the collar tie beam interior edge face.Like this, both help the lubricated of the inside and outside circle raceway of cylindrical roller and bearing, helped lubricating between outer diametric plane boss 12 of retainer collar tie beam and the bearing outer ring internal diameter supporting surface again, supplied the space for storing lubricant oil simultaneously.

In addition, as Fig. 1, Fig. 2, shown in Figure 4, the fore shaft of window beam 2 is made of the boss 22 that the stage casing of the aperture surface of window beam 2 extends internally out.Window beam boss fore shaft 22 is integrated injection structures with window beam 2, but window beam boss fore shaft 22 does not all have crossing with both sides collar tie beam 1, therefore saved the material of collar tie beam 1, in the bearing pack process of assembling, still can play preventing that roller from deviating from, guaranteeing to be lower than outside the roller effect of diametric plane outside the retainer, ease of assembly from the inboard simultaneously.

Further, as shown in Figure 5, stage casing at the outer diametric plane of window beam 2 has window beam groove 5, because if engineering plastics cage wall thickness in injection moulding is excessive, can produce subsurface defect in contraction process also may cause the product distortion and have a strong impact on its dimensional accuracy, the design of this window beam groove 5 can make the wall thickness of window beam 2 reduce, reduce the influence of window beam 2 distortion to retainer, thereby product size and mechanical property have been guaranteed, simultaneously can also store grease in the groove 5, lubricated to strengthen, prolong bearing working life.

Again further, the technology capability when improving the retainer injection moulding, reduce the product distortion and avoid subsurface defect, as Fig. 2 and shown in Figure 4, have groove 15, horizontal uniform stiffening ribs 4 in this groove 15 in the exterior edge face 14 of collar tie beam 1.Design groove 15 is in order to reduce material and uniform wall thickness, to be evenly distributed on groove 15 interior stiffening ribs 4 and can to improve the structural strength of retainer and reduce the product distortion on collar tie beam 1 exterior edge face 14.

The above only is preferred embodiment, is not to be used for limiting practical range of the present utility model.So all those who are familiar with this art, all can not go out under the marrow situation of the present utility model to make various variations and modification, but these variations and modifying all should be covered by within the scope of patent protection that claims of the present utility model define.

Claims

1. cylindrical roller bearing engineering plastics cage comprises two circular collar tie beams and is connected in some window beams between two collar tie beams with evenly being periphery, and form fenestra between the adjacent two window beams, the internal side diameter of window beam is shaped on the fore shaft of restriction roller, it is characterized in that:

2. cylindrical roller bearing engineering plastics cage as claimed in claim 1 is characterized in that:

The fore shaft of described window beam is made of the boss that the stage casing of the aperture surface of window beam extends internally out.

3. cylindrical roller bearing engineering plastics cage as claimed in claim 2 is characterized in that:

The stage casing of the outer diametric plane of described window beam has window beam groove.

4. cylindrical roller bearing engineering plastics cage as claimed in claim 1 is characterized in that:

The exterior edge face of described collar tie beam has groove, uniform stiffening rib in this groove.

5. as the described cylindrical roller bearing engineering plastics cage of one of claim 1 to 4, it is characterized in that:

Oil guide slot is left in the joint of the side of described window beam and described collar tie beam interior edge face, forms oil circuit between the outer diametric plane groove of described collar tie beam and this oil guide slot.