Self-lubricating thrust ball bearing

Abstract

The utility model provides a kind of self-lubricating thrust ball bearing, it is related to bearing technical field, to solve the oil storage structure generally adopts straight slot type oil passage, its lubricating oil delivery relies on passive capillary penetration action and is prone to cause the problem of insufficient oil supply in rolling contact area, and most thrust bearing retainer lacks effective axial limiting device, including rolling ball, retainer and outer ring frame;The retainer is detachably clamped by upper frame and lower frame, the bottom of oil storage groove is further provided with oil guide groove, six oil grooves are evenly distributed in the inner wall of oil storage groove along circumference, outer end of outer ring frame is further provided with leakproof bolt, and two groups of outer ring frame are rotatably installed on the outer end of retainer;The positioning column of the utility model is matched with positioning hole to eliminate installation misplacement risk, ensure that rolling ball is uniformly stressed in ball groove;Inclined oil drainage groove guides lubricating oil to flow to rolling contact area using gravity and centrifugal force, guide groove is matched with snap ring, which can prevent retainer from axial movement and reduce vibration noise.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and more specifically, it relates to a self-lubricating thrust ball bearing. Background Technology

[0002] A thrust ball bearing is a type of bearing used to withstand axial forces. It is commonly used in various large mechanical equipment and typically consists of a housing ring, a shaft ring, several rollers, and a cage that provides spaced guidance for the rollers.

[0003] When existing self-lubricating thrust ball bearings are used, the existing oil storage structure generally adopts a straight groove type oil passage. Its lubricating oil delivery relies on passive capillary penetration, which can easily lead to insufficient oil supply in the rolling contact area. In addition, most thrust bearing cages lack effective axial limiting devices. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a self-lubricating thrust ball bearing. This addresses the issues of existing similar oil storage structures generally employing straight groove oil passages, where lubricant delivery relies on passive capillary permeation, easily leading to insufficient oil supply in the rolling contact area, and the lack of effective axial limiting devices in most thrust bearing cages.

[0005] This utility model of a self-lubricating thrust ball bearing is achieved through the following specific technical means: A self-lubricating thrust ball bearing includes rolling balls, a cage, and an outer ring carrier; The retainer consists of a detachable upper frame and a lower frame that are snapped together and connected by fixing bolts. A rolling ball is installed between the upper frame and the lower frame. The outer ring frame has an annular oil reservoir inside, and an oil guide groove is provided at the bottom of the oil reservoir. Six lubrication grooves are evenly distributed circumferentially on the inner wall of the oil reservoir. The outer end of the outer ring frame is also threaded with a leak-proof bolt. There are two sets of outer ring frames, and the two sets of outer ring frames are rotatably installed on the outer end of the retainer.

[0006] Furthermore, the upper end of the upper frame is fitted with six sets of fixing bolts, and the corresponding position on the lower frame is provided with six sets of connecting screw holes, and the six sets of fixing bolts at the upper end of the upper frame are respectively threaded onto the connecting screw holes on the lower frame.

[0007] Furthermore, the oil storage tank is provided with a radially extending outer transverse groove, and the outer end of the outer transverse groove is provided with an oil vent groove whose outlet end slopes inward and downward.

[0008] Furthermore, the upper and lower shelves are provided with ball grooves in a circular array, and the rolling balls are respectively rolled and installed on the ball grooves between the upper and lower shelves.

[0009] Furthermore, a positioning post is fixedly provided at the bottom of the upper frame, and a positioning hole is opened at the corresponding position at the top of the lower frame, and the positioning post at the bottom of the upper frame is snapped into the positioning hole at the top of the lower frame.

[0010] Furthermore, the inner side of the outer ring frame is provided with a guide groove, and the top of the upper frame is fixedly connected with a retaining ring, and the guide groove on the inner side of the outer ring frame is rotatably mounted on the retaining ring on the top of the upper frame.

[0011] Furthermore, the outer end of the outer ring frame has an oil injection screw hole, and the anti-leakage bolt is threaded onto the oil injection screw hole.

[0012] Compared with the prior art, the self-lubricating thrust ball bearing of this utility model has the following beneficial effects: The positioning pins help to eliminate the risk of misalignment during installation by cooperating with the positioning holes, ensuring that the rolling ball is subjected to uniform force in the ball groove and avoiding uneven wear.

[0013] The oil reservoir is designed to guide the lubricating oil to the rolling contact area by gravity and centrifugal force through the inclined oil vent, thus solving the problem of uneven lubrication caused by passive oil seepage in traditional oil reservoirs. The guide groove and retaining ring work together to prevent the cage from moving axially and reduce vibration and noise. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front side axis of this utility model.

[0015] Figure 2 This is a split diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the assembly and disassembly of the rolling ball of this utility model.

[0017] Figure 4 This is a bottom view of the shelf of this utility model.

[0018] Figure 5 This is a side view of the shelf of this utility model.

[0019] Figure 6 This is a schematic diagram of the internal structure of the outer ring frame of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Rolling ball; 2. Cage; 201. Upper frame; 2011. Positioning post; 2012. Fixing bolt; 202. Lower frame; 2021. Positioning hole; 2022. Connecting screw hole; 203. Ball groove; 204. Snap ring; 3. Outer ring frame; 301. Guide groove; 302. Oil reservoir; 3021. Oil guide groove; 3022. Outer transverse groove; 3023. Lubricating groove; 3024. Oil injection screw hole; 3025. Leak-proof bolt; 3026. Oil drain groove. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] As attached Figure 1 To be continued Figure 6 As shown: Example 1: This utility model provides a self-lubricating thrust ball bearing, including rolling balls 1, a cage 2, and an outer ring cage 3; The retainer 2 is composed of an upper frame 201 and a lower frame 202 that are detachably snapped together and connected by a fixing bolt 2012. The rolling ball 1 is installed between the upper frame 201 and the lower frame 202. The outer ring frame 3 has an annular oil reservoir 302 inside. The bottom of the oil reservoir 302 is also provided with an oil guide groove 3021. The inner wall of the oil reservoir 302 has six lubrication grooves 3023 evenly distributed along the circumference. The outer end of the outer ring frame 3 is also threaded with a leak-proof bolt 3025. There are two sets of outer ring frames 3, and the two sets of outer ring frames 3 are rotatably installed on the outer end of the retainer 2.

[0023] like Figure 3 and Figure 4 As shown, a positioning post 2011 is fixedly provided at the bottom of the upper frame 201, and a positioning hole 2021 is opened at the corresponding position on the top of the lower frame 202. The positioning post 2011 at the bottom of the upper frame 201 is snapped into the positioning hole 2021 at the top of the lower frame 202. Six sets of fixing bolts 2012 are inserted into the upper end of the upper frame 201, and six sets of connecting screw holes 2022 are opened at the corresponding position on the lower frame 202. The six sets of fixing bolts 2012 at the upper end of the upper frame 201 are respectively threaded into the connecting screw holes 2022 on the lower frame 202. Specifically, the positioning post 2011 and the positioning hole 2021 cooperate to eliminate the risk of installation misalignment, ensure that the rolling ball 1 is subjected to uniform force in the ball groove 203, and avoid uneven wear.

[0024] The oil reservoir 302 is provided with a radially extending outer transverse groove 3022, and the outer end of the outer transverse groove 3022 is provided with an oil drain groove 3026 with the outlet end inclined inward. Specifically, the inclined oil drain groove 3026 uses gravity and centrifugal force to guide the lubricating oil to the rolling contact area, solving the problem of uneven lubrication caused by passive oil seepage in the traditional oil reservoir 302.

[0025] Example 2: Based on Example 1, as follows Figure 2 and Figure 6As shown, the outer end of the outer ring frame 3 has an oil filling screw hole 3024, and the anti-leakage bolt 3025 is threaded onto the oil filling screw hole 3024. The inner side of the outer ring frame 3 has a guide groove 301. The top of the upper frame 201 is fixedly connected to a retaining ring 204, and the guide groove 301 on the inner side of the outer ring frame 3 is rotatably mounted on the retaining ring 204 on the top of the upper frame 201. Specifically, the guide groove 301 and the retaining ring 204 cooperate to prevent the cage 2 from moving axially and reduce vibration and noise.

[0026] The upper shelf 201 and the lower shelf 202 are provided with ball grooves 203 in a circular array, and the rolling balls 1 are respectively rolled and installed on the ball grooves 203 between the upper shelf 201 and the lower shelf 202.

[0027] The specific usage and function of this embodiment are as follows: In use, the positioning post 2011 and the positioning hole 2021 cooperate to eliminate the risk of installation misalignment, ensuring that the rolling ball 1 is subjected to uniform force in the ball groove 203 and avoiding uneven wear; the inclined oil vent 3026 uses gravity and centrifugal force to guide the lubricating oil to the rolling contact area, solving the problem of uneven lubrication caused by passive oil seepage in the traditional oil reservoir 302; the guide groove 301 cooperates with the retaining ring 204 to prevent the cage 2 from moving axially and reduce vibration and noise.

[0028] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0029] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A self-lubricating thrust ball bearing, characterized in that: It includes a rolling ball (1), a cage (2) and an outer ring cage (3); The retainer (2) is composed of an upper frame (201) and a lower frame (202) that are detachably snapped together and connected together by a fixing bolt (2012). The rolling ball (1) is installed between the upper frame (201) and the lower frame (202). The outer ring frame (3) is provided with an annular oil storage tank (302) inside. The bottom of the oil storage tank (302) is also provided with an oil guide groove (3021). The inner wall of the oil storage tank (302) is evenly distributed with six lubrication grooves (3023) along the circumference. The outer end of the outer ring frame (3) is also threaded with a leak-proof bolt (3025). There are two sets of outer ring frames (3), and the two sets of outer ring frames (3) are rotatably installed on the outer end of the retainer (2).

2. The self-lubricating thrust ball bearing according to claim 1, characterized in that: The bottom of the upper frame (201) is fixedly provided with a positioning post (2011), and the top of the lower frame (202) is provided with a positioning hole (2021) at the corresponding position. The positioning post (2011) at the bottom of the upper frame (201) is snapped onto the positioning hole (2021) at the top of the lower frame (202).

3. The self-lubricating thrust ball bearing according to claim 1, characterized in that: The upper end of the upper frame (201) is fitted with six sets of fixing bolts (2012), and the lower frame (202) is provided with six sets of connecting screw holes (2022) at the corresponding positions. The six sets of fixing bolts (2012) at the upper end of the upper frame (201) are respectively threaded onto the connecting screw holes (2022) on the lower frame (202).

4. The self-lubricating thrust ball bearing according to claim 1, characterized in that: The oil storage tank (302) is provided with a radially extending outer transverse groove (3022), and the outer end of the outer transverse groove (3022) is provided with an oil vent groove (3026) with the outlet end inclined inward.

5. A self-lubricating thrust ball bearing according to claim 1, characterized in that: The outer ring frame (3) has an oil injection screw hole (3024) at its outer end, and the anti-leakage bolt (3025) is threaded onto the oil injection screw hole (3024).

6. A self-lubricating thrust ball bearing according to claim 1, characterized in that: The inner side of the outer ring frame (3) is provided with a guide groove (301), and the top of the upper frame (201) is fixedly connected with a retaining ring (204), and the guide groove (301) on the inner side of the outer ring frame (3) is rotatably installed on the retaining ring (204) on the top of the upper frame (201).

7. A self-lubricating thrust ball bearing according to claim 1, characterized in that: The upper frame (201) and the lower frame (202) are provided with ball grooves (203) in a circular array, and the rolling ball (1) is respectively rolled and installed on the ball groove (203) between the upper frame (201) and the lower frame (202).

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