High-stability slewing bearing

Abstract

The utility model discloses a high-stability slewing bearing, and belongs to the technical field of engineering mechanical devices. The slewing bearing comprises a slewing bearing body and a spacer ring, the slewing bearing body is provided with a slewing bearing inner ring, an installation groove is formed in the slewing bearing inner ring, the spacer ring is installed in the middle of the installation groove, a circle of oil distribution holes are formed in the spacer ring, an oil injection groove and a circle of oil outlet groove are formed in the slewing bearing inner ring, and the oil injection groove and the oil outlet groove are located on the two sides of the spacer ring. Lubricating oil is dispersed through the oil guide grooves and the distance rings, the number of the oil nozzles is reduced to one, the structural design of the slewing bearing is greatly simplified, manufacturing complexity is lowered, later installation, maintenance and replacement are facilitated, the problem that oil injection is uneven or omission possibly occurs in a traditional multi-oil-nozzle design is solved, and the service life of the slewing bearing is prolonged. And therefore, the lubricating efficiency is improved, all parts of the bearing are fully lubricated, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery equipment technology, specifically a high-stability slewing bearing. Background Technology

[0002] Slewing bearings are key fundamental components in fields such as engineering machinery, port machinery, and wind power generation equipment, undertaking the core functions of load transmission and relative rotational motion. Their operational stability directly affects the service life and safety performance of the entire machine. In existing technologies, the lubrication system of slewing bearings typically adopts a multi-nozzle distributed oil injection scheme, that is, multiple oil injection channels are evenly arranged in the circumferential direction of the inner ring, and oil is supplied to different raceway areas through external nozzles. Traditional slewing bearings often have 4-8 nozzles on the inner ring, corresponding to different raceway positions, to achieve uniform lubrication of the rolling elements and raceways.

[0003] In the use of existing slewing bearings, multiple grease fittings are required for lubrication. Lubrication is time-consuming and labor-intensive. After lubrication, sealing the bearings requires more sealing plugs due to the large number of fittings, resulting in more leakage points for each fitting and more sealing parts that need maintenance. The number and frequency of maintenance of threaded sealing plugs under vibration conditions also increase. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable slewing bearing that disperses lubricating oil through the oil guide groove and spacer ring, thus solving the problem of the cumbersome process of filling multiple oil nozzles with oil.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a high-stability slewing bearing, including a slewing bearing body and a spacer ring. The slewing bearing body has a slewing bearing inner ring, and an installation groove is opened in the inner ring. The spacer ring is installed in the middle of the installation groove. An oil distribution hole is opened on the spacer ring. An oil injection groove and an oil outlet groove are opened in the inner ring of the slewing bearing. The oil injection groove and the oil outlet groove are located on both sides of the spacer ring.

[0007] Furthermore, the installation groove has an oil storage groove and an oil guide groove, with a spacer ring set between the oil storage groove and the oil guide groove. All oil outlet grooves are connected to the bottom of the oil guide groove, and the oil injection groove is connected to the oil storage groove.

[0008] Furthermore, the outer ring of the inner ring of the slewing bearing has a lubrication groove, which is connected to an oil outlet groove.

[0009] Furthermore, a cylinder is fitted inside the oil filling groove, and an oil filling hole is opened inside the cylinder. The oil filling hole has threads, and a threaded sealing plug is fitted into the cylinder threads.

[0010] Furthermore, the slewing bearing body also has a slewing bearing outer ring and a sealing strip. The slewing bearing outer ring is connected to the slewing bearing inner ring, and the sealing strip is set on both sides of the connection between the slewing bearing outer ring and the slewing bearing inner ring.

[0011] This utility model has the following beneficial effects:

[0012] This utility model disperses lubricating oil through the setting of oil guide groove and spacer ring, reducing the number of oil nozzles to one. This not only greatly simplifies the structural design of the slewing bearing and reduces manufacturing complexity, but also facilitates later installation, maintenance and replacement. It also avoids the problem of uneven oil injection or leakage that may occur in the traditional multi-oil nozzle design, thereby improving lubrication efficiency and ensuring sufficient lubrication of all parts of the bearing, thus extending its service life.

[0013] This invention uses an oil storage tank and an oil guide tank to temporarily store lubricating oil. When lubricating oil is injected, it first enters the oil storage tank for temporary storage and then flows away from the oil injection tank. This allows the oil to first flow out from the oil distribution hole, which is far from the oil injection tank, into the oil guide tank and then be discharged from the oil outlet. During continuous oil injection, the oil can be discharged from the oil distribution hole, which is closer to the oil injection tank. This ensures that the lubricating oil can evenly lubricate the inner ring of the slewing bearing from the oil outlet, increasing the practicality of this device.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the slewing bearing body.

[0016] Figure 2 This is a schematic diagram of the inner ring of a slewing bearing.

[0017] Figure 3 This is a schematic diagram of the internal structure of the inner ring of a slewing bearing.

[0018] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0019] Figure 5 This is a schematic diagram of the spacer ring structure.

[0020] In the diagram: 1. Slewing bearing body; 101. Slewing bearing outer ring; 102. Sealing strip; 2. Slewing bearing inner ring; 201. Lubrication groove; 202. Mounting groove; 2021. Oil reservoir; 2022. Oil guide groove; 203. Oil injection groove; 204. Oil outlet groove; 3. Spacer ring; 301. Oil distribution hole; 4. Cylinder; 401. Oil injection hole; 5. Threaded sealing plug. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a high-stability slewing bearing, including a slewing bearing body 1 and a spacer ring 3. The slewing bearing body 1 also has a slewing bearing outer ring 101 and a sealing strip 102. The sealing strip 102 ensures the sealing at the connection between the slewing bearing outer ring 101 and the slewing bearing inner ring 2. The slewing bearing outer ring 101 is connected to the slewing bearing inner ring 2. The sealing strip 102 is set on both sides of the connection between the slewing bearing outer ring 101 and the slewing bearing inner ring 2. The slewing bearing body 1 has a slewing bearing inner ring 2. The outer ring of the slewing bearing inner ring 2 has a lubrication groove 201. The lubrication groove 201 is fitted with balls. The lubrication groove 201 is connected to an oil outlet groove 204. An installation groove 202 is opened in the slewing bearing inner ring 2. The spacer ring 3 is installed in the middle of the installation groove 202. An oil distribution hole 301 is opened on the spacer ring 3. An oil distribution hole 301 is opened in the slewing bearing inner ring 2. There is an oil filling groove 203 and an oil outlet groove 204. A cylinder 4 fits inside the oil filling groove 203, and an oil filling hole 401 is opened inside the cylinder 4. The oil filling hole 401 has threads, and a threaded sealing plug 5 is threaded into the cylinder 4. During oil filling, the threaded sealing plug 5 is rotated and removed, allowing oil to be injected into the inner ring 2 of the slewing bearing through the oil filling hole 401 of the cylinder 4. The oil filling groove 203 and the oil outlet groove 204 are located on both sides of the spacer ring 3. During oil filling... Rotating the threaded sealing plug 5 causes it to move out of the oil injection hole 401, and then oil is injected through the oil injection hole 401, allowing the lubricating oil to enter the mounting groove 202. Since the oil distribution holes 301 in the spacer ring 3 are at different heights from the bottom surface of the mounting groove 202, the oil injected into the oil injection groove 203 can be discharged from one ring of oil distribution holes 301 and then passed into one ring of oil outlet groove 204 to lubricate the lubrication groove 201 part of the mounting ball.

[0023] The mounting groove 202 has an oil storage groove 2021 and an oil guide groove 2022. A spacer ring 3 is set between the oil storage groove 2021 and the oil guide groove 2022. A ring of oil outlet grooves 204 are all connected to the bottom of the oil guide groove 2022. The oil filling groove 203 is connected to the oil storage groove 2021. A ring of oil distribution holes 301 on the spacer ring 3 are arranged such that the closer the oil distribution hole 301 is to the oil filling groove 203, the higher the height of the oil distribution hole 301 from the bottom surface of the mounting groove 202. The farther the oil distribution hole 301 is from the oil filling groove 203, the closer the height of the oil distribution hole 301 is to the bottom surface of the mounting groove 202 and the deeper it is. When lubricating oil is injected, it first enters the oil storage groove 2021 for temporary storage. Because the oil distribution hole 301 that is closer to the oil filling groove 203 is higher than the bottom surface of the mounting groove 202, the lubricating oil... When the oil is first injected into the oil reservoir 2021, the amount is insufficient and cannot be discharged from the oil distribution hole 301, which is close to the oil filling tank 203. The lubricating oil flows through the oil reservoir 2021 to a position away from the oil filling tank 203. Since the oil distribution hole 301, which is far from the oil filling tank 203, is lower than the bottom surface of the mounting groove 202, the oil will first flow out from this point into the guide groove 2022 and be discharged by the oil outlet groove 204. During the continuous oil injection process, the amount of oil discharged from the oil distribution hole 301, which is far from the oil filling tank 203, is relatively small. This results in a deeper storage depth of lubricating oil in the oil reservoir 2021, which can then be discharged from the oil distribution hole 301, which is closer to the oil filling tank 203. This allows the lubricating oil to be evenly lubricated to the inner ring 2 of the slewing bearing from the oil outlet groove 204.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-stability slewing bearing, comprising a slewing bearing body (1), characterized in that: The slewing bearing body (1) has a slewing bearing inner ring (2); It also includes a spacer ring (3), and an installation groove (202) is provided in the inner ring (2) of the slewing bearing. The spacer ring (3) is installed in the middle of the installation groove (202), and an oil distribution hole (301) is provided on the spacer ring (3). The inner ring (2) of the slewing bearing is provided with an oil injection groove (203) and an oil outlet groove (204), which are located on both sides of the spacer ring (3).

2. The high-stability slewing bearing according to claim 1, characterized in that, The mounting groove (202) has an oil storage groove (2021) and an oil guide groove (2022). The spacer ring (3) is disposed between the oil storage groove (2021) and the oil guide groove (2022). A ring of the oil outlet groove (204) is connected to the bottom of the oil guide groove (2022). The oil injection groove (203) is connected to the oil storage groove (2021).

3. A high-stability slewing bearing according to claim 2, characterized in that, The outer ring of the inner ring (2) of the slewing bearing has a lubrication groove (201), which is connected to an oil outlet groove (204).

4. A high-stability slewing bearing according to claim 1, characterized in that, The oil filling groove (203) is fitted with a cylinder (4), and the cylinder (4) has an oil filling hole (401) inside. The oil filling hole (401) has threads, and the cylinder (4) is threaded with a threaded sealing plug (5).

5. A high-stability slewing bearing according to claim 1, characterized in that, The slewing bearing body (1) also has a slewing bearing outer ring (101) and a sealing strip (102). The slewing bearing outer ring (101) is connected to the slewing bearing inner ring (2), and the sealing strip (102) is disposed on both sides of the connection between the slewing bearing outer ring (101) and the slewing bearing inner ring (2).

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