Combined bearing

Abstract

The utility model provides a combined bearing and belongs to the technical field of bearings. The problem of an existing first stress unit is solved. The combined bearing comprises a bearing body, the bearing body is composed of an outer ring, an inner ring, a retainer and a first rolling body, an annular groove allowing the retainer to be embedded and installed is formed in the peripheral wall of the inner ring, and the outer ring is arranged on the inner ring in a sleeving mode and is in sliding fit with the inner ring; the two end faces of the outer ring are each provided with a rotating unit which is connected with the outer ring and can form an end face rotating structure, and the outer circumferential wall, located at the lower end, of the inner ring is provided with a protruding ring part which protrudes outwards in the radial direction and abuts against the corresponding rotating unit. The upper end of the inner ring is provided with a limiting unit which is connected with the inner ring and abuts against the corresponding rotating unit. The utility model has the advantage of various stresses.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings and relates to a combined bearing. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Bearings are generally composed of four parts: outer ring, inner ring, rolling element, and cage. The bearing force of bearings during use is generally divided into axial force or radial force, but in actual use, a small number of devices may need to bear different forces, so a single load bearing cannot meet the use requirements. Summary of the invention

[0003] The utility model aims to provide a bearing capable of bearing different force directions in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a combined bearing, including a bearing body, the bearing body is composed of an outer ring, an inner ring, a retaining frame and a rolling body, characterized in that an annular groove for the retaining frame to be embedded and installed is opened on the outer peripheral wall of the inner ring, the outer ring is sleeved on the inner ring and slidably cooperates with the inner ring, and both end faces of the outer ring are provided with rotating units connected to the inner ring and capable of forming an end face rotating structure, the outer peripheral wall of the inner ring located at the lower end is provided with a convex ring portion that protrudes radially outward and conflicts with the corresponding rotating unit, and the upper end portion of the inner ring is provided with a limiting unit that is connected to the inner ring and also conflicts with the corresponding rotating unit.

[0005] In the above-mentioned combined bearing, the outer diameter of the outer ring is larger than the outer diameter of the convex ring part, a limit groove is provided on the outer circumferential wall of the outer ring, and a limit groove is also provided on the inner circumferential wall of the inner ring. The end face of the outer ring located at the outer edge is provided with a plurality of assembly holes arranged along its circumferential direction for facilitating the connection of the outer ring with other components.

[0006] In the above-mentioned combined bearing, the rotating unit is composed of a limiting frame and a plurality of rolling elements.

[0007] In the above-mentioned combined bearing, the limiting unit is a limiting ring, the limiting ring is connected to the inner ring through a plurality of studs, and the outer diameter of the limiting ring is the same as the outer diameter of the rotating ring.

[0008] In the above-mentioned combined bearing, both end faces of the outer ring located at the inner edge are provided with sealing protrusions which protrude axially outward and are used to improve the sealing of the connection. Both ends of the outer ring are provided with protective rings connected thereto and used to protect the rotating unit. The two protective rings are respectively slidably fitted with the limiting ring and the convex ring part, and sealing folded edges are provided on the outer ends of the two protective rings.

[0009] Compared with the prior art, this combined bearing has the following advantages:

[0010] 1. An annular groove for embedding and installing a retaining frame is provided on the outer circumferential wall of the inner ring. The outer ring is sleeved on the inner ring and slidably cooperates with the inner ring. Rotation units connected to the inner ring and capable of forming an end face rotation structure are provided on both end faces of the outer ring. A convex ring portion protruding radially outward and in conflict with the corresponding rotation unit is provided on the outer circumferential wall of the inner ring at the lower end. A limiting unit connected to the inner ring and also in conflict with the corresponding rotation unit is provided on the upper end of the inner ring. The above structure enables it to withstand forces in different directions, thereby meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of this combined bearing.

[0012] In the figure, 1, outer ring; 2, inner ring; 3, retaining frame; 4, rolling element 1; 5, limiting frame; 6, rolling element 2; 7, limiting ring; 8, sealing protrusion; 9, protective ring. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figure 1As shown, the combined bearing comprises a bearing body, which is composed of an outer ring, an inner ring, a retaining frame and a rolling element. The rolling element is arranged on the retaining frame. An annular groove for the retaining frame to be embedded and installed is provided on the outer peripheral wall of the inner ring. The upper and lower end faces of the retaining frame are respectively slidably fitted with the inner ring. The outer ring is sleeved on the inner ring and slidably matched with the inner ring. Rotating units connected with the inner ring and capable of forming an end face rotating structure are provided on both end faces of the outer ring. A convex ring portion which protrudes radially outward and contacts with the corresponding rotating unit is provided on the outer peripheral wall of the inner ring at the lower end. A limiting unit which is connected with the inner ring and also contacts with the corresponding rotating unit is provided on the upper end portion of the inner ring. The rotating unit is composed of a limiting frame and a plurality of rolling elements. The two ends of the rolling element are respectively connected with the convex ring. The ring part and the outer ring or the outer ring and the limiting unit are in conflict with each other, thereby realizing the transformation of bearing force in different directions. The limiting unit is a limiting ring, which is connected to the inner ring through a plurality of studs. The outer diameter of the limiting ring is the same as the outer diameter of the rotating ring. Both end faces of the outer ring located at the inner edge are provided with sealing protrusions that protrude axially outward and are used to improve the sealing of the connection. Both ends of the outer ring are provided with protective rings connected thereto and used to protect the rotating unit. The inner walls of the two protective rings are respectively slidably fitted with the outer wall of the limiting ring and the outer wall of the convex ring part. Sealing folded edges are provided on the outer ends of the two protective rings. Notched grooves for installing corresponding sealing folded edges are provided on the limiting ring and the convex ring part. A sealing ring can be provided at the connection between the sealing folded edge and the limiting ring or the convex ring part.

[0015] As a preferred structure, the outer diameter of the outer ring is larger than the outer diameter of the convex ring part, a limiting groove is provided on the outer circumferential wall of the outer ring, and a limiting groove is also provided on the inner circumferential wall of the inner ring. The end face of the outer ring at the outer edge is provided with a plurality of assembly holes arranged along its circumferential direction for facilitating the connection of the outer ring with other components.

[0016] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0017] Although this article uses more terms such as outer ring 1, inner ring 2, cage 3, rolling element 1 4, limit frame 5, rolling element 2 6, limit ring 7, sealing protrusion 8, and protective ring 9, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A combined bearing, comprising a bearing body, wherein the bearing body is composed of an outer ring (1), an inner ring (2), a retaining frame (3) and a rolling element (4), characterized in that: The outer peripheral wall of the inner ring (2) is provided with an annular groove for embedding and installing the retaining frame (3); the outer ring (1) is sleeved on the inner ring (2) and slidably matched with the inner ring (2); both end faces of the outer ring (1) are provided with rotating units connected to the inner ring and capable of forming an end face rotating structure; the outer peripheral wall of the inner ring (2) at the lower end is provided with a convex ring portion which protrudes radially outward and contacts the corresponding rotating unit; the upper end of the inner ring (2) is provided with a limiting unit which is connected to the inner ring and also contacts the corresponding rotating unit.

2. A combined bearing according to claim 1, characterized in that: The outer diameter of the outer ring (1) is larger than the outer diameter of the convex ring portion; a limit groove is provided on the outer peripheral wall of the outer ring (1); a limit groove is also provided on the inner peripheral wall of the inner ring (2); and a plurality of assembly holes are provided on the end surface of the outer ring (1) at the outer edge thereof, which are arranged along the circumferential direction thereof and facilitate the connection of the outer ring (1) with other components.

3. A combined bearing according to claim 1, characterized in that: The rotating unit is composed of a limiting frame (5) and a plurality of rolling bodies (6).

4. A combined bearing according to claim 1, characterized in that: The limiting unit is a limiting ring (7), the limiting ring (7) is connected to the inner ring (2) via a plurality of studs, and the outer diameter of the limiting ring (7) is the same as the outer diameter of the rotating ring.

5. A combined bearing according to claim 1, characterized in that: The outer ring (1) is provided with sealing protrusions (8) on both end surfaces at the inner edge thereof, which protrude axially outward and are used to improve the sealing performance of the connection. The outer ring (1) is provided with protective rings (9) on both ends thereof, which are connected thereto and are used to protect the rotating unit. The two protective rings (9) are respectively slidably fitted with the limit ring (7) and the convex ring portion. The outer ends of the two protective rings (9) are provided with sealing folded edges.

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