Main shaft bearing with good noise reduction and sealing performance

Abstract

The utility model relates to the technical field of bearings, and discloses a main shaft bearing with good noise reduction sealing performance, which comprises a bearing main body, the bearing main body comprises an outer ring main body, an inner ring main body, a retainer and a ball, the top end and the bottom end between the outer ring main body and the inner ring main body are respectively provided with a sealing assembly, and each sealing assembly comprises a sealing ring. The sealing ring is fixedly installed on the outer side of the inner ring body, the outer side of the sealing ring is rotationally attached to the inner surface of the outer ring body, an installation ring is fixedly installed at the top end of the sealing ring, and an oil injection pipe is installed at the top end of the installation ring in a penetrating mode. By adopting the design, lubricating oil can be directly added between the outer ring main body and the inner ring main body through the communicated oil filling pipe by rotating the protective cap, and after addition is completed, the oil filling pipe is blocked and isolated through the protective cap, so that the lubricating oil is prevented from being blocked. The outer ring body and the inner ring body are shielded and sealed through the mounting ring, the sealing ring, the oil injection pipe and the protective cap, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and more specifically to a main shaft bearing with good noise reduction and sealing performance. Background Art

[0002] It is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body and reduce the friction coefficient during its movement. It mainly consists of an outer ring, an inner ring, a cage, and balls installed on the cage. During use, in order to reduce the noise of the bearing, a rubber ring is used to block between the outer ring and the inner ring to isolate the noise of the ball rolling. However, after installing the mounting ring, it is difficult to conveniently lubricate the balls between the inner ring and the outer ring. Therefore, it is necessary to design a main shaft bearing with good noise reduction and sealing performance. Summary of the Utility Model

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a main shaft bearing with good noise reduction and sealing performance to solve the problems existing in the above background art.

[0004] The utility model provides the following technical solution: A main shaft bearing with good noise reduction and sealing performance, including a bearing body. The bearing body includes an outer ring body, an inner ring body, a cage, and balls. Sealing components are provided at the top and bottom between the outer ring body and the inner ring body. The sealing component includes a sealing ring. The sealing ring is fixedly installed on the outer side of the inner ring body. The outer side of the sealing ring is rotatably fitted with the inner surface of the outer ring body. An installation ring is fixedly installed at the top of the sealing ring. An oil injection pipe penetrates through the top of the installation ring. The bottom end of the oil injection pipe penetrates through the sealing ring. A protective cap is installed on the outer side of the top end of the oil injection pipe through threads. By rotating the protective cap, lubricating oil can be directly added between the outer ring body and the inner ring body through the connected oil injection pipe. After the addition is completed, the oil injection pipe is blocked and isolated by the protective cap. The outer ring body and the inner ring body are shielded and sealed by the installation ring, the sealing ring, the oil injection pipe, and the protective cap to reduce noise.

[0005] Further, a rubber pad is fixedly installed at the top end of the inner surface of the protective cap. The bottom end of the rubber pad is closely fitted with the top end of the oil injection pipe. By blocking the top of the oil injection pipe with the protective cap, the sealing performance can be increased and the noise conduction can be reduced.

[0006] Further, a rubber ring is fixedly installed on the outer side of the sealing ring. A sliding groove rotatably adapted to the rubber ring is provided on the inner surface of the outer ring body. The rubber ring on the outer side of the sealing ring is rotatably fitted with the sliding groove to increase the sealing performance.

[0007] Further, raised anti-slip strips are provided on the outer surface of the protective cap to increase the friction force.

[0008] Furthermore, a protruding handle is fixedly installed at the top of the mounting ring, and the handle is in an "L" shape, facilitating the lifting of the mounting ring.

[0009] Furthermore, a connecting rope is fixedly installed at the top of the protective cap, and the other end of the connecting rope is fixedly connected to the top of the mounting ring, preventing the protective cap from detaching after rotation.

[0010] Technical effects and advantages of the present utility model:

[0011] 1. With this design of the present utility model, by rotating the protective cap, lubricating oil can be directly added between the outer ring body and the inner ring body through the connected oil injection pipe. After the addition is completed, the oil injection pipe is blocked and isolated by the protective cap. The outer ring body and the inner ring body are shielded and sealed by the mounting ring, sealing ring, oil injection pipe, and protective cap, reducing noise.

[0012] 2. With this design of the present utility model, by means of the protruding handle, the mounting ring can be conveniently lifted outwards, enabling the sealing assembly to be taken out from between the outer ring body and the inner ring body, facilitating the maintenance of the components between the outer ring body and the inner ring body. Through the connecting rope, connection can be provided after the protective cap is rotated and opened, preventing the protective cap from detaching from the sealing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic front sectional view of the structure of the present utility model.

[0014] Figure 2 It is a schematic separated front sectional view of the structure of the present utility model.

[0015] Figure 3 For the present utility model's Figure 1 Schematic enlarged view of the partial structure at A in.

[0016] In the figure: 100, bearing body; 110, outer ring body; 111, inner ring body; 112, cage; 113, ball; 200, sealing assembly; 210, mounting ring; 211, sealing ring; 212, rubber ring; 213, oil injection pipe; 214, protective cap; 215, rubber pad; 216, connecting rope; 217, chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model.

[0018] Example 1: Refer to Figures 1-3, the present utility model provides a spindle bearing with good noise reduction and sealing performance, including a bearing body 100, the bearing body 100 includes an outer ring body 110, an inner ring body 111, a cage 112 and balls 113. Sealing components 200 are provided at both the top and bottom between the outer ring body 110 and the inner ring body 111. The sealing component 200 includes a sealing ring 211, the sealing ring 211 is fixedly installed on the outer side of the inner ring body 111, the outer side of the sealing ring 211 is rotatably fitted with the inner surface of the outer ring body 110. An installation ring 210 is fixedly installed at the top of the sealing ring 211, an oil injection pipe 213 is installed through the top of the installation ring 210, the bottom end of the oil injection pipe 213 penetrates through the sealing ring 211, a protective cap 214 is installed on the outer side of the top end of the oil injection pipe 213 by thread, a rubber pad 215 is fixedly installed at the top inner surface of the protective cap 214, the bottom end of the rubber pad 215 is closely fitted with the top end of the oil injection pipe 213. A rubber ring 212 is fixedly installed on the outer side of the sealing ring 211, a sliding groove 217 that is rotationally adapted to the rubber ring 212 is opened on the inner surface of the outer ring body 110, and raised anti-slip strips are provided on the outer surface of the protective cap 214.

[0019] The working principle of the first embodiment of the present utility model: When in use, rotate the protective cap 214 so that the protective cap 214 no longer blocks the oil injection pipe 213. Lubricating oil can be directly added between the outer ring body 110 and the inner ring body 111 through the oil injection pipe 213. After the addition is completed, block the oil injection pipe 213 through the protective cap 214. Since the rubber pad 215 is closely fitted with the oil injection pipe 213, the sealing performance can be increased and the sealing can be maintained.

[0020] Embodiment Two:

[0021] The difference between Embodiment Two and Embodiment One is that a raised handle is fixedly installed at the top of the installation ring 210, and the shape of the handle is "L". A connecting rope 216 is fixedly installed at the top of the protective cap 214, and the other end of the connecting rope 216 is fixedly connected to the top of the installation ring 210. Through the raised handle, the installation ring 210 can be conveniently lifted outward, so that the sealing component 200 can be taken out from between the outer ring body 110 and the inner ring body 111, which is convenient for overhauling the components between the outer ring body 110 and the inner ring body 111. Through the connecting rope 216, after the protective cap 214 is rotated and opened, connection can be provided to prevent the protective cap 214 from separating from the sealing component 200.

[0022] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0023] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0024] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A main shaft bearing with good noise reduction and sealing performance, comprising a bearing body (100), the bearing body (100) including an outer ring body (110), an inner ring body (111), a cage (112) and balls (113), characterized in that: Sealing components (200) are provided at both the top and bottom between the outer ring body (110) and the inner ring body (111). The sealing component (200) includes a sealing ring (211). The sealing ring (211) is fixedly installed on the outer side of the inner ring body (111). The outer side of the sealing ring (211) is rotationally fitted with the inner surface of the outer ring body (110). The top of the sealing ring (211) is fixedly installed with an installation ring (210). An oil injection pipe (213) is installed through the top of the installation ring (210). The bottom end of the oil injection pipe (213) penetrates through the sealing ring (211). A protective cap (214) is installed on the outer side of the top end of the oil injection pipe (213) by means of a thread.

2. The main shaft bearing with good noise reduction and sealing performance according to claim 1, wherein: A rubber pad (215) is fixedly installed on the top end inner surface of the protective cap (214). The bottom end of the rubber pad (215) is in close contact with the top end of the oil injection pipe (213).

3. A main shaft bearing with good noise reduction and sealing performance according to claim 1, characterized in that: A rubber ring (212) is fixedly installed on the outer side of the sealing ring (211). A sliding groove (217) that is rotationally adapted to the rubber ring (212) is provided on the inner surface of the outer ring body (110).

4. A main shaft bearing with good noise reduction and sealing performance according to claim 1, characterized in that: Anti-slip strips are provided on the outer surface of the protective cap (214).

5. The main shaft bearing with good noise reduction and sealing performance according to claim 1, characterized in that: A protruding handle is fixedly installed on the top end of the installation ring (210), and the shape of the handle is "L".

6. A main shaft bearing with good noise reduction and sealing performance according to claim 1, characterized in that: A connecting rope (216) is fixedly installed on the top end of the protective cap (214). The other end of the connecting rope (216) is fixedly connected to the top end of the installation ring (210).

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