Deep groove ball bearing

Abstract

The utility model provides a deep groove ball bearing, and belongs to the technical field of bearings. The problem that an existing bearing is poor in lubricating effect is solved. The deep groove ball bearing comprises a bearing main body, the bearing main body is composed of an inner ring, an outer ring, a retainer and a rolling body, a mounting cavity for mounting the retainer and the rolling body is reserved between the inner ring and the outer ring, and sealing units connected with the bearing main body and used for improving the sealing performance are arranged on the two end faces, located at the mounting cavity, of the bearing main body. One end face of the inner ring is provided with a plurality of concave grooves which are arranged in the circumferential direction of the inner ring and axially concave inwards, the inner ring is provided with communicating flow channels which are located on the groove bottom faces of the concave grooves and enable the concave grooves to be communicated with the mounting cavity, and the inner ring is provided with sealing covers which are located at the openings of the concave grooves and connected with the concave grooves. The utility model has the advantage of being convenient to lubricate.

Description

Technical Field

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

[0002] Bearings are precision parts, so they require maintenance. However, in actual use, due to the complex working environment, 70% of their premature failures are caused by impurities entering the bearing, causing abnormal wear of the raceway or poor rotation. Since the bearing seals are made of rubber, they are soft and easily deformed and aged. The deformed seals have poor sealing effects and are easy to fall off after continuous force, resulting in poor bearing sealing. At the same time, the wear of the bearings will continue to increase during long-term work. For this reason, they need to be lubricated. However, the existing seal structure requires the disassembly of the seal, which makes lubrication inconvenient and also affects the sealing effect after reassembly. Summary of the invention

[0003] The utility model aims to solve the above problems existing in the prior art and provides a deep groove ball bearing which is easy to lubricate and has improved sealing performance.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a deep groove ball bearing, including a bearing body, the bearing body is composed of an inner ring, an outer ring, a retaining frame and rolling elements, and an installation cavity for installing the retaining frame and the rolling elements is reserved between the inner ring and the outer ring, characterized in that both end faces of the bearing body located at the installation cavity are provided with sealing units connected thereto and used to improve the sealing performance, a plurality of recessed grooves arranged along its circumferential direction and axially recessed inward are provided on one end face of the inner ring, a connecting flow channel that connects the recessed groove with the installation cavity is provided on the groove bottom surface of the inner ring located at the recessed groove, and a sealing cover connected thereto is provided at the opening of the recessed groove of the inner ring.

[0005] In the above-mentioned deep groove ball bearing, the outer wall of the inner ring is arranged in a multi-step structure.

[0006] In the above-mentioned deep groove ball bearing, the sealing unit is composed of an outer ring frame and an inner ring frame, the outer ring frame is sleeved on the inner ring frame and slidably matched with it, the inner ring frame is sleeved on the inner ring and slidably fits with it, the outer wall of the outer ring frame is in contact with the inner wall of the outer ring through the inner ring frame, the vertical section of the outer ring frame is two symmetrically arranged L-shaped structures, and the vertical section of the inner ring frame is two symmetrically arranged T-shaped structures.

[0007] In the above-mentioned deep groove ball bearing, the outer wall of the inner ring at both ends is provided with a raised ring which protrudes radially outward and contacts with the inner ring frame.

[0008] In the above-mentioned deep groove ball bearing, the outer peripheral wall of the inner ring is provided with a plurality of grooves which are axially recessed inward and whose number is the same as the connecting flow channel. The inner ring is provided with an auxiliary unit connected to the grooves and used to reduce the amount of lubricating oil entering.

[0009] In the above-mentioned deep groove ball bearing, the auxiliary unit is composed of an auxiliary cover and an auxiliary block. The auxiliary cover is arranged at the opening of the groove in the inner ring and is connected thereto. The auxiliary block is arranged in the groove. The outer end face of the auxiliary block is an arc surface convex outward, and the outer end face of the auxiliary block is in conflict with the auxiliary cover. A through hole connected to the mounting cavity is provided on the end face of the auxiliary cover in conflict with the auxiliary block, and a connecting channel is provided on the auxiliary block to connect the through hole with the connecting flow channel.

[0010] Compared with the existing technology, this deep groove ball bearing has the following advantages:

[0011] 1. Both end faces of the bearing body located at the installation cavity are provided with sealing units connected thereto and used to improve the sealing performance. A plurality of recessed grooves arranged along its circumferential direction and recessed axially inward are provided on one end face of the inner ring. A connecting flow channel connecting the recessed groove with the installation cavity is provided on the bottom face of the recessed groove of the inner ring. A sealing cover connected thereto is provided at the opening of the recessed groove of the inner ring. The above-mentioned structure can lubricate it and also ensure the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of the deep groove ball bearing.

[0013] In the figure, 1, inner ring; 2, outer ring; 3, retaining frame; 4, rolling element; 5, connecting flow channel; 6, sealing cover; 7, outer ring frame; 8, inner ring frame; 9, raised ring; 10, auxiliary cover; 11, auxiliary block. DETAILED DESCRIPTION

[0014] 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.

[0015] like Figure 1As shown, the deep groove ball bearing comprises a bearing body, which is composed of an inner ring 1, an outer ring 2, a retainer 3 and a rolling element 4, and a mounting cavity for mounting the retainer 3 and the rolling element 4 is reserved between the inner ring 1 and the outer ring 2. Both end surfaces of the bearing body located at the mounting cavity are provided with sealing units connected thereto and used to improve the sealing performance. A plurality of concave grooves arranged along the circumferential direction thereof and concave axially inward are provided on one end surface of the inner ring 1. A connecting flow connecting the concave groove and the mounting cavity is provided on the groove bottom surface of the inner ring 1. 5, the inner ring 1 is provided with a sealing cover 6 connected thereto at the opening of the concave groove, the sealing unit is composed of an outer ring frame 7 and an inner ring frame 8, the outer ring frame 7 is sleeved on the inner ring frame 8 and slidably matched therewith, the inner ring frame 8 is sleeved on the inner ring 1 and slidably fitted therewith, the outer wall of the outer ring frame 7 is in contact with the inner wall of the outer ring 2 through the inner ring frame 8, the vertical section of the outer ring frame 7 is two symmetrically arranged L-shaped structures, the vertical section of the inner ring frame 8 is two symmetrically arranged T-shaped structures, and a reinforced sealing can be provided between the outer ring frame 7 and the inner ring frame 8 The inner ring 1 is provided with a protruding ring 9 which protrudes radially outward and contacts the inner ring frame 8 on the outer wall at both ends thereof, and a plurality of grooves which are axially recessed inward and the same number as the connecting flow channel 5 are provided on the outer peripheral wall of the inner ring 1. The inner ring 1 is provided with an auxiliary unit connected to the groove and used for reducing the amount of lubricating oil entering therefrom at the groove. The auxiliary unit is composed of an auxiliary cover 10 and an auxiliary block 11. The auxiliary cover 10 is provided at the opening of the groove in the inner ring 1 and connected thereto, and the auxiliary block 11 is provided in the groove. The outer end surface is an arc surface convex outward, and the outer end surface of the auxiliary block 11 is in conflict with the auxiliary cover 10. A through hole is provided on the end surface of the auxiliary cover 10 that is in conflict with the auxiliary block 11, so that the outer end surface of the auxiliary block 11 can be partially extended into the installation and connected with the installation cavity. A connecting channel is provided on the auxiliary block 11 to connect the through hole with the connecting flow channel 5. The inner diameter of one end of the connecting channel located at the through hole is smaller than the inner diameter of the other end. A ball is arranged in the connecting channel of the auxiliary block 11, and a sealing ring is provided between the auxiliary block 11 and the auxiliary cover 10 and is sleeved on the auxiliary block 11.

[0016] As a preferred structure, the outer wall of the inner ring 1 is arranged in a multi-step structure.

[0017] 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.

[0018] Although the terms such as inner ring 1, outer ring 2, retainer 3, rolling element 4, connecting flow channel 5, sealing cover 6, outer ring frame 7, inner ring frame 8, raised ring 9, auxiliary cover 10, auxiliary block 11 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A deep groove ball bearing, comprising a bearing body, the bearing body comprising an inner ring (1), an outer ring (2), a retaining frame (3) and rolling elements (4), and a mounting cavity for mounting the retaining frame (3) and the rolling elements (4) is reserved between the inner ring (1) and the outer ring (2), characterized in that: The bearing body is provided with sealing units connected thereto and used to improve the sealing performance on both end faces of the bearing body located at the installation cavity. A plurality of recessed grooves are provided on one end face of the inner ring (1) and are arranged along its circumferential direction and are recessed axially inward. A connecting flow channel (5) is provided on the bottom face of the recessed groove to connect the recessed groove with the installation cavity. The inner ring (1) is provided with a sealing cover (6) connected thereto at the opening of the recessed groove.

2. A deep groove ball bearing according to claim 1, characterized in that: The outer wall of the inner ring (1) is arranged in a multi-step structure.

3. A deep groove ball bearing according to claim 1, characterized in that: The sealing unit is composed of an outer ring frame (7) and an inner ring frame (8), wherein the outer ring frame (7) is sleeved on the inner ring frame (8) and slidably matched with the inner ring frame (8), and the inner ring frame (8) is sleeved on the inner ring (1) and slidably matched with the inner ring frame (1), and the outer wall of the outer ring frame (7) is in contact with the inner wall of the outer ring (2) through the inner ring frame (8), and the vertical section of the outer ring frame (7) is two symmetrically arranged L-shaped structures, and the vertical section of the inner ring frame (8) is two symmetrically arranged T-shaped structures.

4. A deep groove ball bearing according to claim 3, characterized in that: The inner ring (1) is provided with protruding rings (9) on the outer walls at both ends thereof, which protrude radially outward and abut against the inner ring frame (8).

5. A deep groove ball bearing according to claim 1, characterized in that: The outer peripheral wall of the inner ring (1) is provided with a plurality of grooves which are axially inwardly recessed and whose number is the same as that of the connecting flow channel (5). The inner ring (1) is provided with an auxiliary unit connected to the grooves and used to reduce the amount of lubricating oil entering therefrom.

6. A deep groove ball bearing according to claim 5, characterized in that: The auxiliary unit is composed of an auxiliary cover (10) and an auxiliary block (11). The auxiliary cover (10) is arranged at the opening of the groove in the inner ring (1) and is connected thereto. The auxiliary block (11) is arranged in the groove. The outer end surface of the auxiliary block (11) is an arc surface convex outward, and the outer end surface of the auxiliary block (11) is in conflict with the auxiliary cover (10). A through hole connected to the installation cavity is provided on the end surface of the auxiliary cover (10) in conflict with the auxiliary block (11). The auxiliary block (11) is provided with a connecting channel that connects the through hole to the connecting flow channel (5).

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