Bearing static lubrication structure

Abstract

The application belongs to the technical field of bearing lubrication, and discloses a bearing static lubrication structure, which comprises a bearing, a protective cover and a grease scraping plate, the bearing comprises a bearing inner ring, a bearing outer ring rotating relative to the bearing inner ring and a rolling body arranged between the bearing inner ring and the bearing outer ring, the protective cover is arranged on the bearing inner ring, the grease scraping plate comprises a scraping surface plate, the scraping surface plate is arranged to be inclined to the movement direction of the bearing outer ring, one side of the scraping surface plate is fixedly connected with the protective cover, and the other side of the scraping surface plate is movably connected with the bearing outer ring, the bearing outer ring rotates, and the lubricating grease flows to the rolling body through the scraping of the scraping surface plate.

Description

Technical Field

[0001] This invention belongs to the technical field of bearing lubrication, and mainly relates to a static lubrication structure for bearings. Background Technology

[0002] As a core component of mechanical transmission systems, bearings are widely used in automobiles, aviation, wind power, precision machine tools and other fields. Their main function is to support rotation and transmit loads to ensure the efficient operation of equipment. Therefore, bearings have high requirements for stability, reliability and service life. The stability, reliability and long service life of bearings depend not only on the performance of bearing materials, dimensional accuracy, manufacturing process and load safety factor, but also on the lubrication condition during use.

[0003] The core of bearing lubrication technology lies in introducing a lubricating medium into the friction surfaces to form an effective lubricating film, thereby reducing frictional resistance and wear, and improving bearing operating efficiency, stability, and lifespan. Grease, due to its strong adhesion and good sealing properties, is widely used in medium- and low-speed bearings. The main methods of bearing grease lubrication involve directly adding grease to the bearing raceway using specialized grease injection tools, or adding grease directly to the bearing raceway through a special grease injection nozzle located on the bearing's stationary ring. These processes are generally accompanied by low-speed bearing rotation to ensure that the newly injected grease is evenly distributed within the raceway, preventing grease from failing to enter the raceway or from accumulating and being squeezed out, becoming ineffective grease and thus reducing the bearing's lubrication effect.

[0004] However, considering the diversity of bearing application fields and equipment types, some bearings, due to design and usage requirements, do not have dedicated grease nipples on the stationary bearing rings, or the grease nipples are designed on the rotating bearing rings, which makes it impossible to add grease while the bearing is rotating; or due to equipment layout and safety requirements, the bearing cannot be greased while rotating.

[0005] Therefore, there is an urgent need to design a new type of bearing lubrication structure that can solve the problem of the lack of a dedicated grease nipple on the bearing ring or the grease nipple being located on the moving ring, while also meeting the lubrication requirements of lubrication when the bearing is stationary. This is of great significance for further improving the applicability of bearings in complex environments. Summary of the Invention

[0006] To address the problems in the prior art, this invention proposes a static lubrication structure for bearings. An grease injection nozzle is installed on the bearing protective cover for grease injection. A contoured grease scraper structure with an inclined angle is installed between the bearing raceway and the protective cover. This allows the grease locally accumulated above the bearing raceway to move relative to the scraper during bearing rotation. The grease flows along the scraping panel of the inclined scraper towards the apex of the angle, gradually entering the bearing raceway. This solves the problem of the lack of a dedicated grease injection nozzle on the bearing ring, or the nozzle being located on the rotating ring, preventing dynamic lubrication. It also satisfies the lubrication requirements for lubrication when the bearing is stationary.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] A static lubrication structure for a bearing includes a bearing, which comprises an inner ring, an outer ring that rotates relative to the inner ring, and rolling elements disposed between the two. It also includes a protective cover and a grease scraper. The protective cover is disposed on the inner ring, and the grease scraper includes a scraping panel. The scraping panel is inclined toward the direction of movement of the outer ring, with one side fixedly connected to the protective cover and the other side movably connected to the outer ring. As the outer ring rotates, grease flows to the rolling elements via the scraping panel.

[0009] Furthermore, both the outer ring and the inner ring of the bearing are provided with inner sidewalls with stepped surfaces that are opposite each other. The outer ring of the bearing is provided with an outer ring stepped surface, and the inner ring of the bearing is provided with an inner ring stepped surface. A bearing raceway is formed on the lower side of the stepped surface. The rolling element rolls in the bearing raceway. A U-shaped groove is formed on the upper side of the stepped surface. The U-shaped groove located below the protective cover constitutes an annular accumulation groove for grease.

[0010] Furthermore, the grease scraper also includes a scraper mounting seat and a scraper base. The scraper base is arranged along the bearing inner wall direction of the bearing inner ring and perpendicular to the inner ring stepped surface. The scraper mounting seat is arranged perpendicular to the scraper base, extends between the protective cover and the bearing inner ring, and is installed on the protective cover.

[0011] Furthermore, one side of the scraper panel is fixedly connected to the scraper base, and the other side is movably connected to the inner wall of the outer ring of the bearing.

[0012] Furthermore, the shape of the end of the oil scraper panel near the outer ring of the bearing is adapted to the inner wall of the outer ring of the bearing.

[0013] Furthermore, the angle θ between the oil scraper panel and the outer and inner stepped surfaces is 45-60°.

[0014] Furthermore, the end of the oil scraper panel near the outer ring of the bearing has a 2mm safety gap with the inner wall of the outer ring of the bearing.

[0015] Furthermore, it also includes multiple oil filling nozzles, evenly distributed on the protective cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention provides a static lubrication structure for bearings, which solves the problem that bearings cannot be statically lubricated due to design or usage limitations. It is suitable for bearings where there is no dedicated grease nipple on the bearing ring or where the grease nipple is located on the moving ring, and effectively lubricates the bearings; it meets the lubrication effect requirements of lubricating the bearings in a static state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0020] Figure 3 This is a cross-sectional view of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the grease scraper of the present invention.

[0022] Figure 5 This is a front view of the grease scraper of the present invention.

[0023] Figure 6 This is a top view of the grease scraper of the present invention.

[0024] Figure 7 This is a schematic diagram showing the tilt angle of the grease scraper panel of the present invention.

[0025] Wherein: 1. Bearing; 1-1. Bearing outer ring; 1-1-1. Outer ring stepped surface; 1-2. Bearing inner ring; 1-2-1. Inner ring stepped surface; 1-3. Rolling element;

[0026] 2. Protective cover;

[0027] 3. Oil filler nozzle;

[0028] 4. Grease scraper; 4-1. Scraper mounting base; 4-2. Scraper base; 4-3. Oil scraper panel;

[0029] 5. Bearing raceway;

[0030] 6. U-shaped groove. Detailed Implementation

[0031] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Improvements and adjustments made by those skilled in the art based on the present invention in practical applications still fall within the scope of protection of the present invention.

[0032] To better illustrate the present invention, the following detailed description of the invention's implementation process is provided in conjunction with the accompanying drawings.

[0033] like Figures 1-7 As shown, this is a static lubrication structure for a bearing, which can be applied to a highly integrated directional turntable. It includes a bearing 1, a protective cover 2, an oil nozzle 3, and a grease scraper 4.

[0034] The bearing 1 includes an outer ring 1-1, an inner ring 1-2, and rolling elements 1-3. The rolling elements 1-3 are disposed between the outer ring 1-1 and the inner ring 1-2. The inner ring 1-2 is bolted to the turntable base, and the outer ring 1-1 is bolted to the turntable frame (neither the turntable base nor the turntable frame is shown in the attached drawings). The rolling elements 1-3 may be steel balls.

[0035] The protective cover 2 is used for bearing protection. One end of it is fixed on the inner ring 1-2 of the bearing, and the other end is movably connected to the outer ring 1-1 of the bearing. The whole structure is a ring structure, and its size is adapted to the bearing 1. Multiple oil injection nozzles 3 are provided and evenly distributed on the protective cover 2 for adding grease into the bearing 1.

[0036] It should be noted that the protective cover 2 is oriented in the same direction as the bearing 1. In this embodiment, for example... Figures 1-3 As shown, bearing 1 is horizontally set, and correspondingly, protective cover 2 is horizontally set on the upper side of bearing 1. Bearing 1 can also be vertically set, and correspondingly, protective cover 2 is vertically set on the left or right side of bearing 1, with one end fixed on the inner ring 1-2 of bearing and the other end set on the outer ring 1-1 of bearing.

[0037] This embodiment takes the bearing 1 as a horizontally positioned example, with the protective cover 2 horizontally positioned above the bearing 1, for further explanation.

[0038] like Figures 1-3As shown, the outer ring 1-1 and inner ring 1-2 of the bearing 1 are both provided with stepped inner sidewalls that are arranged opposite to each other. Both include stepped surfaces. The stepped surface of the outer ring 1-1 is the outer ring stepped surface 1-1-1, and the stepped surface of the inner ring 1-2 is the inner ring stepped surface 1-2-1. A stepped gap is formed between the two. A bearing raceway 5 is formed on the lower side of the stepped surface. The rolling element 1-3 rolls in the bearing raceway 5. A U-shaped groove 6 is formed on the upper side of the stepped surface. It is an annular structure. The U-shaped groove 6 located below the protective cover 2 constitutes an annular accumulation groove. When grease is added from the grease nipple 3, it accumulates in the annular accumulation groove.

[0039] like Figures 4-7 As shown, the grease scraper 4, formed from aluminum alloy, is disposed between the protective cover 2 and the bearing 1. It includes a scraper mounting base 4-1, a scraper base 4-2, and an oil scraping panel 4-3. The scraper base 4-2 is arranged along the bearing inner wall direction of the inner ring 1-2 and perpendicular to the inner ring stepped surface 1-2-1. The scraper mounting base 4-1 is perpendicular to the scraper base 4-2, extends between the protective cover 2 and the bearing inner ring 1-2, and is mounted on the protective cover 2 with screws. The oil scraping panel... The plate 4-3 is inclined toward the direction of movement of the outer ring 1-1 of the bearing. One side of it is fixedly connected to the scraper base 4-2, and the other side is movably connected to the inner wall of the outer ring 1-1 of the bearing. The shape of its end is adapted to the stepped inner wall of the outer ring 1-1 of the bearing. The angle θ between the oil scraper plate 4-3 and the stepped surface 1-1-1 of the outer ring and the stepped surface 1-2-1 of the inner ring is adjusted according to the type of bearing grease and the amount of grease added at one time. It is preferably 45-60°, and 55° is the best.

[0040] The optimal safety gap is 2mm between the oil scraper panel 4-3 and the stepped inner wall of the bearing outer ring 1-1.

[0041] The working process of the bearing static lubrication structure described in this embodiment:

[0042] Multiple grease nozzles 3 distributed on the protective cover 2 inject 0.25 kg of grease into the U-shaped groove 6 above the bearing raceway 5, forming a local accumulation of grease in the annular accumulation groove. The grease scraper panel 4-3 is inclined towards the direction of movement of the bearing outer ring 1-1. When the grease scraper 4 is stationary, the grease continuously accumulates at the angle of the grease scraper panel 4-3 during the rotation of the bearing outer ring 1-1. Under the disturbance of the inclined grease scraper panel 4-3, it flows along the grease scraper panel 4-3 to the vertex of the angle θ and gradually enters the bearing raceway 5 located on the lower side of the U-shaped groove 6, realizing the injection and lubrication of bearing grease.

[0043] The bearing static lubrication structure described in this embodiment allows grease to be added first when the bearing is not rotating (i.e., static), and then the bearing is rotated. Under the action of the scraper, the accumulated grease is carried into the bearing raceway.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A static lubrication structure for a bearing, comprising a bearing (1), said bearing (1) including an inner ring (1-2), an outer ring (1-1) rotating relative to the inner ring (1-2), and rolling elements (1-3) disposed between the two, characterized in that, It also includes a protective cover (2) and a grease scraper (4). The protective cover (2) is set on the inner ring (1-2) of the bearing. The grease scraper (4) includes a scraping panel (4-3). The scraping panel (4-3) is inclined toward the direction of movement of the outer ring (1-1) of the bearing. One side of it is fixedly connected to the protective cover (2), and the other side is movably connected to the outer ring (1-1) of the bearing. When the outer ring (1-1) of the bearing rotates, the grease flows to the rolling element (1-3) through the scraping of the scraping panel (4-3).

2. The bearing static lubrication structure according to claim 1, characterized in that, Both the outer ring (1-1) and the inner ring (1-2) of the bearing are provided with inner sidewalls with stepped surfaces opposite each other. The outer ring (1-1) is provided with an outer ring stepped surface (1-1-1), and the inner ring (1-2) is provided with an inner ring stepped surface (1-2-1). A bearing raceway (5) is formed on the lower side of the stepped surface. The rolling element (1-3) rolls in the bearing raceway (5). A U-shaped groove (6) is formed on the upper side of the stepped surface. The U-shaped groove (6) below the protective cover (2) constitutes an annular accumulation groove for grease.

3. The bearing static lubrication structure according to claim 1, characterized in that, The grease scraper (4) also includes a scraper mounting seat (4-1) and a scraper base (4-2). The scraper base (4-2) is arranged along the bearing inner wall direction of the bearing inner ring (1-2) and perpendicular to the inner ring stepped surface (1-2-1). The scraper mounting seat (4-1) is arranged perpendicular to the scraper base (4-2), extends between the protective cover (2) and the bearing inner ring (1-2), and is installed on the protective cover (2).

4. The bearing static lubrication structure according to claim 3, characterized in that, One side of the scraper panel (4-3) is fixedly connected to the scraper base (4-2), and the other side is movably connected to the inner wall of the bearing outer ring (1-1).

5. A bearing static lubrication structure according to claim 1, characterized in that, The shape of the end of the oil scraper panel (4-3) near the outer ring (1-1) of the bearing is adapted to the inner wall of the outer ring (1-1).

6. A bearing static lubrication structure according to claim 2, characterized in that, The angle θ between the oil scraper panel (4-3) and the outer stepped surface (1-1-1) and the inner stepped surface (1-2-1) is 45-60°.

7. A bearing static lubrication structure according to claim 1, characterized in that, The end of the oil scraper panel (4-3) near the outer ring (1-1) of the bearing has a 2mm safety gap with the inner wall of the outer ring (1-1).

8. A bearing static lubrication structure according to claim 1, characterized in that, It also includes oil nozzles (3), multiple of which are evenly distributed on the protective cover (2).

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