Retainer and bearing using same

Abstract

The invention relates to a retainer and a bearing using the same. The retainer comprises a retainer pocket, a retainer inner diameter lintel, a left annular groove side retainer inner diameter surface and a right annular groove side retainer inner diameter surface, a left retainer inner diameter annular groove and a right retainer inner diameter annular groove are respectively arranged between the inner diameter surface of the left annular groove side retainer and the left side of the adjacent retainer inner diameter lintel and between the inner diameter surface of the right annular groove side retainer and the right side of the adjacent retainer inner diameter lintel; and lubricating oil is filled in the grooves of the left retainer inner diameter annular groove and the right retainer inner diameter annular groove. The high-speed bearing is ingenious in design, the weight of the retainer is reduced, the high-speed running centrifugal force is reduced, the high-speed running performance of the retainer is improved, lubrication is prolonged, the lubrication effect is improved, and the service life of the bearing is prolonged; and the centrifugal effect of the retainer in high-speed operation affects the performance of the high-speed bearing, and the high-speed bearing retainer has good market prospects and development space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearings, in particular to a cage and a bearing using the cage. BACKGROUND

[0002] When the bearing is running at high speed, the cage rotates at high speed, and due to the centrifugal force, the cage is deformed and unstable, which affects the high-speed running stability of the bearing, and even leads to premature failure of the bearing, which is a technical problem that needs to be solved by those skilled in the art. Patent Nos. CN201475160U, CN202468715U and CN201547135U respectively disclose a low-noise deep-groove ball bearing with an oil groove structure cage, an oil storage groove cage and a bearing cage with oil grooves on the inner and outer diameters. The main purpose is to store oil through the oil groove when the bearing is running, to prolong and improve the lubrication effect, and thus to improve the service life of the bearing. The disadvantage is that the maximum load is borne by the overpass of the cage during the running of the bearing, especially the patent CN201547135U discloses that the inner and outer diameter surfaces of the cage are provided with oil grooves in the middle. This structure significantly reduces the overpass strength of the cage, which is very unfavorable for the running of high-speed heavy-duty bearings. Moreover, the above-mentioned patents do not involve the technical problem of the influence of the centrifugal force of the high-speed running cage on the performance of the high-speed bearing.

[0003] In view of the above problems, in order to improve the high-speed running stability of the bearing, under the premise of ensuring that the strength of the cage meets the requirements, a cage and a bearing using the cage are provided. SUMMARY

[0004] In order to solve the technical problems mentioned in the background art, the present application provides a cage and a bearing using the cage, which realizes the purposes of ingenious design, simple structure, light weight of the cage, reduction of centrifugal force during high-speed running, improvement of high-speed running performance of the cage, prolongation of lubrication and improvement of lubrication effect, and improvement of the service life of the bearing.

[0005] The technical solution adopted by the present application to solve the above technical problems is: a cage, which comprises a cage pocket, a cage inner diameter overpass, a left annular groove side cage inner diameter surface and a right annular groove side cage inner diameter surface. The left and right annular groove side cage inner diameter surfaces are respectively located on the left and right sides of the cage inner diameter surface, and the left and right annular groove side cage inner diameter surfaces are respectively provided with a cage inner diameter left annular groove and a cage inner diameter right annular groove between the left and right sides of the adjacent cage inner diameter overpass. The grooves of the cage inner diameter left annular groove and the cage inner diameter right annular groove are provided with lubricating oil.

[0006] As a further optimization of the aforementioned cage, the left and right sides of the cage inner diameter crossbeam are connected to the left and right annular grooves of the cage inner diameter with a circular arc transition to avoid stress concentration.

[0007] As a further optimization of the aforementioned cage, the left annular groove and the right annular groove of the cage inner diameter are symmetrically arranged.

[0008] As a further optimization of the above-mentioned cage, the inner diameter surfaces of the left annular groove side cage and the right annular groove side cage are at the same horizontal plane.

[0009] A bearing includes an inner ring, an outer ring, rolling elements, and a cage, wherein the cage is an internally guided cage.

[0010] Compared with the prior art, the beneficial effects of the present invention are: (1) The weight of the cage is reduced, which correspondingly reduces the centrifugal force during high-speed operation and improves the high-speed operation performance of the cage.

[0011] (2) The groove also has an oil storage function, which prolongs lubrication and improves the lubrication effect, thus extending the bearing life.

[0012] (3) The outer diameter lintels that intersect with the trench adopt a circular arc transition to ensure the strength of the lintels and avoid stress concentration. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a partial three-dimensional cross-section of the cage. Figure 2 This is a schematic diagram of the longitudinal section of the cage; In the diagram, the markings are as follows: 01 is the left annular groove of the cage inner diameter; 02 is the right annular groove of the cage inner diameter; 03 is the cage inner diameter lintel; 04 is the cage pocket; 05 is the cage inner diameter surface on the left annular groove side; and 06 is the cage inner diameter surface on the right annular groove side. Detailed Implementation

[0014] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0015] A retainer includes a retainer pocket 04, a retainer inner diameter crossbeam 03, a left annular groove side retainer inner diameter surface 05, and a right annular groove side retainer inner diameter surface 06. The left annular groove side retainer inner diameter surface 05 and the right annular groove side retainer inner diameter surface 06 are respectively located on the left and right sides of the retainer inner diameter surface. A left annular groove 01 and a right annular groove 02 of the retainer inner diameter are respectively provided between the left annular groove side retainer inner diameter surface 05 and the right annular groove side retainer inner diameter surface 06 and the left and right sides of the adjacent retainer inner diameter crossbeam 03. Lubricating oil is provided in the grooves of the left annular groove 01 and the right annular groove 02 of the retainer inner diameter.

[0016] The left and right sides of the cage inner diameter crossbeam 03 are connected to the left annular groove 01 and the right annular groove 02 of the cage inner diameter by an arc transition to avoid stress concentration.

[0017] The left annular groove 01 and the right annular groove 02 of the inner diameter of the cage are symmetrically arranged.

[0018] The heights of the inner diameter surface 05 of the left annular groove side retainer and the inner diameter surface 06 of the right annular groove side retainer are on the same horizontal plane.

[0019] A bearing includes an inner ring, an outer ring, rolling elements, and a cage, wherein the cage is an internally guided cage.

[0020] In a specific implementation of this invention, taking the QJS224 bearing as an example, the bearing has an inner diameter of φ120mm, an outer diameter of φ215mm, and a width of 40mm. The cage has an inner diameter of φ162.9mm, an outer diameter of φ182.9mm, and a width of 41.6mm. The maximum diameter of the pocket is 28.2mm. The left annular groove 01 and the left annular groove 02 of the cage inner diameter are designed with a depth Hmax=4mm and a width Bmax=2.7mm, tangent to the pocket 04. Both sides of the crossbeam adopt an arc transition with a radius R=Hmax=4mm to avoid stress concentration under load. The width of the left annular groove side cage inner diameter surface 05 and the right annular groove side cage inner diameter surface 06, which contact the inner ring flange, is Smin=4mm. Simulation calculations show that the structural strength of the cage meets the design requirements. The bearing adopts the aforementioned cage technology, which reduces the cage weight, thereby reducing centrifugal force and improving the cage's operational stability. Furthermore, the oil storage function of the left and right grooves can extend and improve the lubrication effect, resulting in a significant improvement in bearing performance.

[0021] This invention is ingeniously designed and has a simple structure. It reduces the weight of the cage, decreases the centrifugal force during high-speed operation, improves the high-speed performance of the cage, prolongs lubrication and improves the lubrication effect, and extends the life of the bearing. It solves the problems of excessive load on the cage beam during operation of existing high-speed bearings, which is not conducive to the operation of high-speed heavy-duty bearings, and the impact of the centrifugal force of the cage on the performance of high-speed bearings during high-speed operation. Compared with existing technologies, it has a good market prospect and development space.

[0022] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of the present invention.

Claims

1. A cage, characterized in that: The cage includes a cage pocket (04), a cage inner diameter crossbeam (03), a left annular groove side cage inner diameter surface (05), and a right annular groove side cage inner diameter surface (06). The left annular groove side cage inner diameter surface (05) and the right annular groove side cage inner diameter surface (06) are located on the left and right sides of the cage inner diameter surface, respectively. The left annular groove side cage inner diameter surface (05) and the right annular groove side cage inner diameter surface (06) are respectively provided with a left annular groove (01) and a right annular groove (02) between the left annular groove (01) and the right annular groove (02) of the cage inner diameter, respectively. Lubricating oil is provided in the grooves of the left annular groove (01) and the right annular groove (02).

2. A retainer as described in claim 1, characterized in that: The left and right sides of the retainer inner diameter crossbeam (03) are connected to the left annular groove (01) and the right annular groove (02) of the retainer inner diameter by a circular arc transition to avoid stress concentration.

3. A retainer as described in claim 1, characterized in that: The left annular groove (01) and the right annular groove (02) of the inner diameter of the cage are symmetrically arranged.

4. A cage as described in claim 1, characterized in that: The heights of the inner diameter surfaces (05) of the left annular groove side retainer and (06) of the right annular groove side retainer are on the same horizontal plane.

5. A bearing using a cage as described in any one of claims 1 to 4, characterized in that: The bearing includes an inner ring, an outer ring, rolling elements, and a cage, wherein the cage is an internally guided cage.

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