Basket-shaped retainer for tapered roller bearing

Abstract

The utility model provides a basket-shaped retainer for a tapered roller bearing, which comprises the following components: a basket-shaped retainer which comprises a small-end circular ring seat ring, a large-end circular ring seat ring and a plurality of beam bodies connected with the small-end circular ring seat ring and the large-end circular ring seat ring, a pocket hole for assembling the rolling body is formed between every two adjacent beam bodies; the cross section of the beam body is trapezoidal; the two sides, facing the pocket holes, of the middle of the beam body are provided with protruding locking points facing the pocket holes. A transition face is arranged on the edge of the side, close to the interior of the retainer body, of each locking point, and the transition faces extend towards the inner side of the retainer body and are connected with the inner side face of the beam body. According to the technical scheme provided by the utility model, the light weight of the basket-shaped retainer can be realized, the structural strength is ensured, the rotating speed of the bearing is improved to a certain extent, and the normal use of the bearing is effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, in particular to a basket-type retainer structure for a tapered roller bearing. Background Art

[0002] Tapered roller bearings are the most commonly used bearing type in the automotive field. Traditional tapered roller bearings are mainly used in pairs to withstand large axial and radial forces, but do not require high speeds. As the speed requirements for tapered roller bearings in the automotive field gradually increase, traditional tapered roller bearings can no longer meet the requirements of lightweight and high speed in the automotive field. Utility Model Content

[0003] In view of the above problems, the purpose of this application is to provide a basket-type retainer for a tapered roller bearing, so as to achieve the lightweight of the basket-type retainer and ensure that the tapered roller can be used normally under conditions of higher rotation speeds.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a basket-type retainer for a tapered roller bearing, comprising the following components:

[0005] A basket-type retainer, the basket-type retainer includes a small-end circular ring seat ring and a large-end circular ring seat ring, and a plurality of beam bodies connecting the small-end circular ring seat ring and the large-end circular ring seat ring, and a pocket hole for assembling rolling bodies is provided between two adjacent beam bodies; the cross-section of the beam body is trapezoidal; the middle part of the beam body is provided with protruding locking points facing the pocket holes on both sides thereof; the edge of one side of the locking point close to the inside of the retainer body is provided with a transition surface, the transition surface extends inside the retainer body and connects with the inner side surface of the beam body.

[0006] Furthermore, the transition surface is an inclined surface.

[0007] Furthermore, the length of the locking point along the length direction of the beam body is one third of the length of the beam body.

[0008] Furthermore, the small end circular ring seat ring is provided with an annular flange turned inward, and a plurality of arc grooves are provided on the annular flange along the circumferential direction, and the arc grooves are through holes penetrating the annular flange in the thickness direction of the annular flange.

[0009] Furthermore, the arcuate grooves are evenly distributed on the annular flange at equal intervals, the number of the arcuate grooves is the same as the number of the beam bodies, and the arcuate grooves correspond to the beam bodies one by one.

[0010] Furthermore, the plane where the symmetry axis of the beam body is located coincides with the plane where the symmetry axis of the arc-shaped groove is located.

[0011] Furthermore, the beam bodies are evenly distributed between the small end circular ring seat ring and the large end circular ring seat ring.

[0012] Furthermore, the small-end circular ring seat ring and the large-end circular ring seat ring are coaxially arranged circular rings, and the diameter of the small-end circular ring seat ring is smaller than the diameter of the large-end circular ring seat ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The lightweight of the basket-type cage is achieved while ensuring the structural strength, which increases the rotation speed of the bearing to a certain extent and effectively ensures the normal use of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] in:

[0017] FIG1 is a schematic diagram of a basket-type retainer in this embodiment;

[0018] Figure 2 Schematic diagram of the structure of the basket type retainer in this embodiment;

[0019] In the figure: 3 is an arc groove; 4 is a beam body; 5 is a pocket hole; 6 is a locking point; 7 is a small end circular ring seat ring; 8 is a large end circular ring seat ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] The basket-type retainer in this embodiment as shown in Figures 1 and 2 includes the following components: a basket-type retainer, which includes a small-end circular ring seat ring 7 and a large-end circular ring seat ring 8, and a plurality of beam bodies 4 connecting the small-end circular ring seat ring 7 and the large-end circular ring seat ring 8, and a pocket hole 5 for assembling rolling elements is provided between two adjacent beam bodies 4; the cross-section of the beam body 4 is trapezoidal; the middle part of the beam body 4 is provided with protruding locking points 6 facing the pocket holes 5 on both sides; the locking point 6 is provided with a transition surface on one side edge close to the inside of the retainer body, and the transition surface extends to the inner side of the retainer body and connects with the inner side surface of the beam body 4.

[0022] The transition surface is an inclined surface.

[0023] The length of the locking point 6 along the length direction of the beam body 4 is one third of the length of the beam body 4 .

[0024] The retaining frame referred to in this application has a weight-reducing design on each beam. The beam of the commonly used basket-type retaining frame is a straight slope plus a slope form. Now, a straight slope reduction design is made from the small end and the large end of the window hole to the center of the beam, and only about 1 / 3 of the part in the center of the beam is retained as a locking point to guide the rolling body and prevent the rolling body from falling.

[0025] The small end circular ring seat ring 7 is provided with an annular flange turned inward, and a plurality of arc grooves 3 are provided on the annular flange along the circumferential direction. The arc grooves 3 are through holes penetrating the annular flange in the thickness direction of the annular flange.

[0026] The arc groove 3 referred to in the present application is located on the small end circular ring seat ring 7 and is provided with an annular flange flipped inward to reduce the overall weight of the retainer, and the side hollow design helps to improve the lubrication effect.

[0027] The plane where the symmetry axis of the beam body is located coincides with the plane where the symmetry axis of the arc groove is located, and the position where the arc groove is located is easier to lubricate, which is conducive to the flow of lubricant.

[0028] The arc grooves 3 are evenly distributed on the annular flange at equal intervals, the number of the arc grooves 3 is the same as the number of the beam bodies 4, and the arc grooves 3 correspond one to one with the beam bodies 4. The position of the arc grooves corresponds to each beam to ensure the strength of the cage.

[0029] The beam bodies 4 are evenly distributed between the small end circular ring seat ring 7 and the large end circular ring seat ring 8 .

[0030] The small-end circular ring seat ring 7 and the large-end circular ring seat ring 8 are coaxially arranged circular rings, and the diameter of the small-end circular ring seat ring 7 is smaller than the diameter of the large-end circular ring seat ring 8.

[0031] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A basket-type retainer for a tapered roller bearing, characterized in that: The invention comprises the following components: a basket-type retaining frame, the basket-type retaining frame comprises a small-end circular ring seat ring and a large-end circular ring seat ring, and a plurality of beam bodies connecting the small-end circular ring seat ring and the large-end circular ring seat ring, and a pocket hole for assembling rolling bodies is provided between two adjacent beam bodies; the cross section of the beam body is trapezoidal; the middle part of the beam body is provided with protruding locking points facing the pocket holes on both sides thereof; the edge of one side of the locking point close to the inside of the retaining frame body is provided with a transition surface, the transition surface extends inside the retaining frame body and connects with the inner side surface of the beam body.

2. A basket-type retainer for a tapered roller bearing as claimed in claim 1, characterized in that: The transition surface is an inclined surface.

3. A basket-type retainer for a tapered roller bearing as claimed in claim 1, characterized in that: The length of the locking point along the length direction of the beam body is one third of the length of the beam body.

4. A basket-type retainer for a tapered roller bearing as claimed in claim 1, characterized in that: The small end circular ring seat ring is provided with an annular flange turned inward, and a plurality of arc grooves are provided on the annular flange along the circumferential direction. The arc grooves are through holes penetrating the annular flange in the thickness direction of the annular flange.

5. A basket-type retainer for a tapered roller bearing as claimed in claim 4, characterized in that: The arcuate grooves are evenly distributed on the annular flange at equal intervals, the number of the arcuate grooves is the same as the number of the beam bodies, and the arcuate grooves correspond to the beam bodies one by one.

6. A basket-type retainer for a tapered roller bearing as claimed in claim 5, characterized in that: The plane where the symmetry axis of the beam body is located coincides with the plane where the symmetry axis of the arc-shaped groove is located.

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