Bearing with rotating combined oil seal structure

Abstract

The application discloses a bearing with a rotating combined oil seal structure, which comprises a rotating shaft and an outer ring, an inner ring is fixedly sleeved on the outer surface of the rotating shaft, and leakage detection assemblies are arranged on the rotating shaft and the outer ring, and each leakage detection assembly comprises a connecting ring, a hidden groove is formed in the inner wall of the connecting ring, and a hollow rubber ring is arranged in the hidden groove.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a bearing with a rotating combined oil seal structure. Background Technology

[0002] A bearing is a device used to reduce friction in mechanical equipment. It typically consists of two parts, an inner ring and an outer ring, which rotate through the interaction of rolling elements or sliding elements. Bearings can provide stable support under high-speed rotation and heavy load conditions, enabling mechanical equipment to operate smoothly, reducing friction and energy loss, and extending equipment life.

[0003] However, existing rotary combined oil seal bearings have the following shortcomings:

[0004] If the rotary combination oil seal on the bearing is used for a long time, lubricating oil leakage is likely to occur. In the current technology, visual inspection or cleaning inspection is often used to determine whether there is oil leakage in the bearing. However, it is difficult to observe if the oil seal is slightly damaged or leaks air, which will lead to the bearing being unable to be used normally.

[0005] Therefore, we propose a bearing with a rotary combined oil seal structure to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a bearing with a rotating combined oil seal structure to solve the problem that oil leakage in the oil seal part of the bearing is not easy to detect in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a bearing with a rotary combined oil seal structure, comprising: a shaft and an outer ring, an inner ring fixedly sleeved on the outer surface of the shaft, a leak detection assembly, two leak detection assemblies, each of the two leak detection assemblies including a connecting ring, a hidden groove formed on the inner wall of each of the two connecting rings, a hollow rubber ring disposed inside each of the two hidden grooves, an air outlet pipe fixedly connected to the outer surface of each of the two hollow rubber rings, a threaded cap threadedly sleeved on the outer surface of each of the two air outlet pipes, and four... The eight fixed blocks are all fixedly mounted with limit buckles on their outer surfaces. The eight limit buckles are arranged in pairs. Each pair of limit buckles has a rotating ring rotatably sleeved on its outer surface. The four rotating rings are threaded with threaded tubes inside. The outer surfaces of the two connecting rings are respectively fixedly embedded with two air pump tubes. The four air pump tubes are movably embedded with pistons inside. The bottom of the four pistons is provided with rubber cups. The top of the four pistons is fixedly mounted with connecting rods. The top of the four connecting rods is fixedly connected with movable blocks. The top of the four movable blocks is provided with a fixing groove.

[0008] Preferably, the four air tubes are arranged in pairs, with one end of one pair of air tubes fixedly penetrating into the interior of two hollow rubber rings, and one end of the other pair of air tubes fixedly penetrating into the exterior of the connecting ring.

[0009] Preferably, a limiting groove is formed on the outer surface of the inner ring, and multiple steel balls are arranged inside the limiting groove. A fixing frame is directly and movably fitted on the outer surface of the steel balls. An arc-shaped groove is formed on the inner wall of the outer ring, and the outer surfaces of the multiple steel balls are movably connected to the inner wall of the arc-shaped groove.

[0010] Preferably, the outer surface of the outer ring is provided with a connecting groove, the inside of the connecting groove is provided with a collection box, the outer surface of the collection box is provided with a leakage hole, activated carbon is provided between the inner walls of the connecting groove, a sealing plate is fixed to the outer surface of the connecting groove, and the outer surface of the sealing plate is provided with multiple air leakage holes.

[0011] Preferably, the outer surface of the outer ring is fixedly connected to two first flanges, and the outer surface of each of the two first flanges is provided with mounting holes, and gaskets are provided inside the two mounting holes.

[0012] Preferably, the outer surface of the outer ring is provided with two oil seal assemblies, each of the two oil seal assemblies includes a ferrule, the outer surface of each of the two ferrules is fixedly mounted with a second flange, and the outer surface of each of the two second flanges is provided with a pressing groove.

[0013] Preferably, the two first flanges are respectively fixedly connected to the outer surfaces of the two second flanges by bolts, and protective grooves are provided inside the two ferrules near one edge.

[0014] Preferably, a baffle is fixedly connected to the inner wall of the other side of each of the two card sleeves, and a waterproof pad is provided on the inner wall of one side of each of the two baffles.

[0015] Preferably, a spring ring is provided on the inner wall of the other side of each of the two baffles, and an oil-proof plate is fixedly provided on the inner wall of each of the two spring rings.

[0016] Preferably, the outer surfaces of the two card sleeves are fixedly connected to the outer surfaces of the two connecting rings, and the outer surface of the rotating shaft is coated with a color-changing ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention uses a leak detection component to check for leaks in oil seal assemblies. First, one set of threaded tubes is rotated so that one end of the threaded tube is disengaged from the fixed groove. Then, the rotating ring is rotated, and the movable block is pulled back and forth to fill the hollow rubber ring with gas and expand it to fit tightly against the outer surface of the rotating shaft. The other two movable blocks are moved in the same way, so that a large amount of gas enters the space between the two connecting rings and the two oil seals. At this time, if there is a leak in the oil seal, the compression of the gas will cause the lubricating oil trapped inside the oil seal assembly to flow outward and remain on the outside of the oil seal. This solves the problem that bearing oil leakage in the existing rotary combination oil seal structure is not easy to detect.

[0019] 2. In the device of the present invention, in order to prevent the leakage of lubricating oil between the bearing and the shaft during the rotation of the shaft, two sleeves are first respectively fitted onto the outer surface of the bearing, and then the two sets of first flanges and second flanges are tightly fitted together and fixed with bolts. When the lubricating oil between the bearing and the shaft moves during the rotation, the oil-proof plate and two waterproof gaskets can isolate the flow of gas between the inside and outside of the oil seal, thereby further improving the airtightness of the oil seal.

[0020] 3. In the device of the present invention, since the surface of the bearing is easily affected by friction or torque during high-speed rotation or improper installation, the temperature rises and the bearing is damaged. By placing ammonium nitrate powder inside the collection box, the ammonium nitrate absorbs heat when heated, which can reduce the temperature of the bearing and further improve the protection of the bearing. Attached Figure Description

[0021] Figure 1 This is a front perspective view of a bearing with a rotary combined oil seal structure according to the present invention;

[0022] Figure 2 This is a three-dimensional sectional view of the inner ring portion of a bearing with a rotating combined oil seal structure according to the present invention.

[0023] Figure 3 This is a sectional perspective view of the oil seal assembly in a bearing with a rotary combined oil seal structure according to the present invention.

[0024] Figure 4 This is a perspective cross-sectional view of the first flange portion in a bearing with a rotary combined oil seal structure according to the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 This is a three-dimensional sectional view of the connecting ring portion of a bearing with a rotary combined oil seal structure according to the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle;

[0028] Figure 8 This is a three-dimensional sectional view of the leak detection component in a bearing with a rotating combined oil seal structure according to the present invention.

[0029] In the diagram: 1. Shaft; 2. Inner ring; 3. Limiting groove; 4. Steel ball; 5. Fixing bracket; 6. Outer ring; 7. Arc groove; 8. Connecting groove; 9. Collection box; 10. Leakage hole; 11. Activated carbon; 12. Sealing plate; 13. Air leakage hole; 14. First flange; 15. Mounting hole; 16. Gasket; 17. Oil seal assembly; 1701. Compression sleeve; 1702. Second flange; 1703. Pressing groove; 1704. Protective groove; 1705. Baffle; 1706. Waterproof gasket; 17 07. Spring ring; 1708. Oil-proof plate; 18. Leak detection assembly; 1801. Connecting ring; 1802. Concealed groove; 1803. Hollow rubber ring; 1804. Air outlet pipe; 1805. Threaded cap; 1806. Fixing block; 1807. Limit buckle; 1808. Rotary ring; 1809. Threaded pipe; 1810. Air inflator pipe; 1811. Piston; 1812. Rubber cup; 1813. Connecting rod; 1814. Movable block; 1815. Fixing groove; 19. Color-changing ring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-8As shown, the present invention provides a technical solution: a bearing with a rotary combined oil seal structure, comprising: a rotating shaft 1 and an outer ring 6, an inner ring 2 fixedly sleeved on the outer surface of the rotating shaft 1, a leak detection assembly 18, of which two are provided, each including a connecting ring 1801, the inner wall of each connecting ring 1801 having a hidden groove 1802, a hollow rubber ring 1803 disposed inside each hidden groove 1802, an air outlet pipe 1804 fixedly connected to the outer surface of each hollow rubber ring 1803, a threaded cap 1805 threadedly sleeved on the outer surface of each air outlet pipe 1804, and four fixing blocks 1806 fixedly fixed to the outer surface of each connecting ring 1801, totaling eight fixing blocks 1806. The outer surface of the 6 is fixedly installed with limit buckles 1807. The eight limit buckles 1807 are arranged in pairs. The outer surface of each pair of limit buckles 1807 is rotatably fitted with a rotating ring 1808. The four rotating rings 1808 are threadedly connected to the threaded tubes 1809. The outer surface of the two connecting rings 1801 is fixedly embedded with two air tubes 1810. The four air tubes 1810 are movably embedded with pistons 1811. The bottom of the four pistons 1811 is provided with rubber cups 1812. The top of the four pistons 1811 is fixedly installed with connecting rods 1813. The top of the four connecting rods 1813 is fixedly connected with movable blocks 1814. The top of the four movable blocks 1814 is provided with fixing grooves 1815.

[0032] At the same time, according to Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the four air inflator pipes 1810 are arranged in pairs. One end of one pair of air inflator pipes 1810 is fixedly inserted into the interior of two hollow rubber rings 1803, and one end of the other pair of air inflator pipes 1810 is fixedly inserted into the exterior of the connecting ring 1801. The air inflator pipes 1810 facilitate the testing of the sealing condition of the rotary oil seal. The air inflator pipes 1810 embedded inside the hollow rubber rings 1803 supply air to the hollow rubber rings 1803, while the air inflator pipes 1810 inserted into the connecting ring 1801 supply air between the connecting ring 1801 and the ferrule 1701. The two air supply systems respectively isolate the connecting ring 1801 from the external environment and test the sealing performance between the interior of the connecting ring 1801 and the oil seal assembly 17.

[0033] according to Figure 2As shown, a limiting groove 3 is formed on the outer surface of the inner ring 2, and multiple steel balls 4 are arranged inside the limiting groove 3. A fixing frame 5 is directly and movably fitted on the outer surface of the steel balls 4. An arc-shaped groove 7 is formed on the inner wall of the outer ring 6, and the outer surfaces of the multiple steel balls 4 are movably connected to the inner wall of the arc-shaped groove 7. By forming a limiting groove 3 on the surface of the inner ring 2, multiple sets of steel balls 4 are supported. The rolling of the steel balls 4 between the inner ring 2 and the outer ring 6 can provide stable support for the rotating shaft 1 under high-speed rotation and heavy load conditions, so that the mechanical equipment can operate smoothly and reduce friction and energy loss. The multiple arc-shaped grooves 7 limit the multiple steel balls 4, so that they can only rotate between the outer ring 6 and the inner ring 2. By fitting the fixing frame 5 between the outer surfaces of the steel balls 4, the multiple steel balls 4 maintain the correct position and spacing during operation, so as to ensure the normal operation of the bearing.

[0034] according to Figure 2 As shown, a connecting groove 8 is provided on the outer surface of the outer ring 6, and a collection box 9 is provided inside the connecting groove 8. A leakage hole 10 is provided on the outer surface of the collection box 9. Activated carbon 11 is provided between the inner walls of the connecting groove 8. A sealing plate 12 is fixed on the outer surface of the connecting groove 8, and multiple air leakage holes 13 are provided on the outer surface of the sealing plate 12. Since the bearing generates heat due to friction or torque during rotation, it is easy to damage the bearing if the heat is not dissipated in time. The collection box 9 is fixed by the connecting groove 8. The collection box 9 contains ammonium nitrate powder. Since ammonium nitrate undergoes an endothermic reaction when heated, it can absorb some of the heat released in the bearing and accelerate the heat dissipation of the bearing. Since water vapor, oxygen and nitrogen are generated during the heating of ammonium nitrate, the gas and water can be discharged through the multiple leakage holes 10. In order to prevent water from corroding the bearing, the activated carbon 11 can absorb the water generated by the heating of ammonium nitrate. The remaining oxygen and nitrogen can be dissipated through the air leakage holes 13 on the surface of the sealing plate 12.

[0035] according to Figure 1-5 As shown, two first flanges 14 are fixedly connected to the outer surface of the outer ring 6. The outer surfaces of the two first flanges 14 are provided with mounting holes 15, and gaskets 16 are provided inside the two mounting holes 15. By fixing the two first flanges 14 to the outer surface of the outer ring 6, the installation and fixation of the two rotary combination oil seals are facilitated. The position of the gaskets 16 is fixed by the mounting holes 15. The gaskets 16 are made of rubber, and the first flanges 14 and the second flanges 1702 can be tightly fitted by squeezing and deforming the gaskets 16, so as to prevent external dust from entering between the bearing and the oil seal.

[0036] according to Figure 1-5As shown, the outer surface of the outer ring 6 is provided with two oil seal assemblies 17. Each oil seal assembly 17 includes a ferrule 1701. A second flange 1702 is fixedly installed on the outer surface of each of the two ferrules 1701. A pressing groove 1703 is opened on the outer surface of each of the two second flanges 1702. The two oil seal assemblies 17 can prevent dust or water from entering the bearing and can also prevent the lubricating oil inside the bearing from flowing out. The two ferrules 1701 can limit the horizontal position of the bearing. The two second flanges 1702 facilitate the installation of the combined rotary oil seal. The pressing groove 1703 limits the two gaskets 16 embedded inside and causes them to be squeezed and deformed.

[0037] according to Figure 1-5 As shown, the two first flanges 14 are fixedly connected to the outer surfaces of the two second flanges 1702 by bolts. The two ferrules 1701 are provided with protective grooves 1704 near one edge. The first flanges 14 and the second flanges 1702 are directly and tightly connected by bolts, so that the oil seal in the bearing is installed more securely. The inner diameter of the two protective grooves 1704 is exactly matched with the outer diameter of the bearing. Through the action of the two protective grooves 1704, the bearing is tightly limited.

[0038] according to Figure 3 and Figure 5 As shown, baffles 1705 are fixedly connected to the inner walls of the other side of both sleeves 1701. Waterproof gaskets 1706 are provided on one inner wall of each baffle 1705. The baffles 1705 reduce the external force on the two waterproof gaskets 1706. Both waterproof gaskets 1706 are made of polyether rubber, which has good performance in high-temperature and chemical environments. Figure 3 As shown, the cross-section of the waterproof gasket 1706 is V-shaped, which is intended to provide multiple layers of protection for the inside of the bearing and improve the performance of the oil seal.

[0039] according to Figure 3 As shown, spring rings 1707 are provided on the inner walls of the other side of the two baffles 1705, and oil-proof plates 1708 are fixedly installed on the inner walls of the two spring rings 1707. Through the installation of the spring rings 1707, the elastic force of the spring rings makes the oil-proof plates 1708 in close contact with the shaft or housing, preventing lubricating oil or liquid from leaking from the inside of the bearing to the outside, thereby achieving the sealing performance of the bearing. The installation of the oil-proof plates 1708 prevents the lubricating oil in the bearing from flowing out. The oil-proof plates 1708 and the waterproof gaskets 1706 are made of the same material, which is polyether rubber.

[0040] according to Figure 1 , Figure 3 , Figure 8 , Figure 6 and Figure 7 As shown, the outer surfaces of the two ferrules 1701 are fixedly connected to the outer surfaces of the two connecting rings 1801, respectively. The outer surface of the rotating shaft 1 is coated with a color-changing ring 19. By fixing the ferrules 1701 to the connecting rings 1801, leakage detection of the rotary combination oil seal can be convenient. When the bearing rotates at high speed or is improperly installed, the surface temperature of the bearing will rise. Through the heat transfer between the metals, the surface temperature of the rotating shaft 1 will rise. By coating the surface of the rotating shaft 1 with a color-changing ring 19, where the color-changing ring 19 is a heat-sensitive coating, the heat-sensitive coating can change its surface color with the temperature. By observing the color-changing ring 19, the temperature of the bearing surface can be observed in time. When the temperature is too high, the bearing temperature can be reduced in time through appropriate means to prevent the bearing from overheating and being damaged.

[0041] The overall effect of the mechanism is as follows: During the rotation of the shaft 1, in order to reduce the friction generated by the rotation of the shaft 1, the inner ring 2 is first fitted onto the outer surface of the shaft 1. During the operation of the shaft 1, the inner ring 2 is rotated, which in turn drives multiple steel balls 4 to rotate between the limiting groove 3 and the arc groove 7. The fixing frame 5 plays a role in positioning and separating the steel balls 4. Through its structural design and machining precision, the fixing frame 5 fixes the steel balls 4 at certain intervals and in corresponding positions, avoiding problems such as misalignment, collision and poor rolling of the steel balls 4, and ensuring the stable operation of the bearing. In order to prevent the lubricating oil leakage between the bearing and the shaft 1, two ferrules 1701 are first fitted onto the outer surface of the bearing. On the surface, the inner diameter of the two protective grooves 1704 matches the outer diameter of the bearing, which is intended to limit the bearing and make it more stable during rotation. After the two ferrules 1701 are fitted, the two sets of first flanges 14 and second flanges 1702 are tightly fitted together, and then fixed together with bolts. When the first flanges 14 and second flanges 1702 are tightly fitted together, the two washers 16 are respectively embedded in the two corresponding pressing grooves 1703. The length of the washers 16 is greater than the distance between the first flanges 14 and second flanges 1702, thereby making the first flanges 14 and second flanges 1702... When the disc 1702 is tightly fitted, the washer 16 is compressed and deformed, ensuring a complete seal between the two sleeves 1701 and the bearing. When the lubricating oil between the bearing and the shaft 1 moves during rotation, the oil shield 1708 prevents it from leaking out. The oil shield 1708 is made of polyether rubber, which exhibits good performance under high temperature and chemical conditions, improving the durability of the bearing oil seal. The elastic force of the spring ring 1707 ensures tight contact between the oil shield 1708 and the shaft or housing, preventing lubricating oil or liquid from leaking from the bearing interior to the exterior, thus achieving the bearing's sealing performance. To prevent dust, water, or oil from entering the oil seal, [further measures are taken]. The two waterproof gaskets 1706 provide protection against contaminants from the external environment from entering the oil seal. The cross-section of the waterproof gasket 1706 is V-shaped, providing double-layer protection for the oil seal's interior. Improvements to the rotary combination oil seal structure further enhance its airtightness. Since the oil seal may crack due to wear and tear during long-term operation, regular inspection is necessary. To check for oil leakage in the oil seal assembly 17, first rotate the two threaded tubes 1809 corresponding to the hollow rubber ring 1803, moving them upwards until one end of the threaded tube 1809 disengages from the fixed groove 1815. Then rotate the rotating ring 1808. (The text abruptly ends here, so the translation stops as well.) Figure 8As shown, the cross-section of the limiting buckle 1807 is T-shaped. Its purpose is to limit the rotation of the rotating ring 1808 while facilitating its rotation. When the rotating ring 1808 rotates to one side of the movable block 1814, it pulls the movable block 1814 back and forth, causing the connecting rod 1813 to move back and forth inside the air pump pipe 1810, which in turn causes the piston 1811 to move back and forth. When the piston 1811 moves outside the air pump pipe 1810, a negative pressure is formed inside the air pump pipe 1810, which is affected by the atmosphere. The pressure causes the wider portion of the rubber cup 1812 to contract inward, creating a gap between it and the inner wall of the air pumping tube 1810. This allows outside air to enter the air pumping tube 1810. When the movable block 1814 drives the piston 1811 to move into the air pumping tube 1810, high pressure is generated inside the air pumping tube 1810, causing the wider portion of the rubber cup 1812 to expand outward. This ensures that the outer diameter of the rubber cup 1812 fits tightly against the inner wall of the air pumping tube 1810. The rubber cup 1812... With high elasticity, the rubber cup can deform under stress and return to its original shape after the stress is removed. This allows the rubber cup to adapt to pressure changes during the inflation and deflation of the air pump, maintaining good sealing performance. Gas is trapped inside the air pump pipe 1810 and, under the compression of the piston 1811, enters the hollow rubber ring 1803, causing a large amount of gas to enter. Due to its strong extensibility, the hollow rubber ring 1803 expands, increasing its volume until it tightly adheres to the outer surface of the rotating shaft 1, preventing external gas from entering between the connecting ring 1801 and the oil seal. Then, the two movable blocks 1814, which match the air pump pipe 1810 extending to the outside of the connecting ring 1801, are moved in the same way, allowing a large amount of gas to enter the space between the two connecting rings 1801 and the two oil seals. At this point, if the oil seal leaks, the compression of the gas will cause the trapped gas to... The lubricating oil inside the sealing assembly 17 flows outward and remains on the outside of the oil seal. After the gas between the connecting ring 1801 and the oil seal is compressed, rotate the two threaded caps 1805 to separate them from the vent pipe 1804, thereby releasing the gas inside the hollow rubber ring 1803. The vent pipe 1804 is located outside the connecting ring 1801. After the gas inside the hollow rubber ring 1803 is released, the surface of the hollow rubber ring 1803 will deflate and return to the inside of the hidden groove 1802. Then, observe whether there is lubricating oil on the outside of the ferrule 1701. If there is no lubricating oil, it means there is no oil leakage. If a small amount of lubricating oil is found, it means that the oil seal is worn inside and there is oil leakage, which needs to be replaced in time. After the inspection is completed, first move the four movable blocks 1814 to the position closest to the air inflator pipe 1810, and then rotate the four rotating rings 1808 to drive the threaded pipe 1809 to rotate.When one end of the threaded tube 1809 is fully rotated to the outer surface of the fixing groove 1815, the threaded tube 1809 is rotated towards the position of the fixing groove 1815, so that one end of the threaded tube 1809 is embedded in the interior of the fixing groove 1815, thus completing the reset of the leak detection component 18. Through the function of the leak detection component 18, the sealing performance of the rotary combined oil seal is easily detected, solving the problem that bearing oil leakage in the existing rotary combined oil seal structure is not easily detected. Because the surface of the bearing is easily affected by friction or torque during high-speed rotation or improper installation, the temperature rises, which can lead to bearing damage. By placing nitrate inside the collection box 9... Ammonium nitrate powder is a salt compound with nitrogen-oxygen and hydrogen bonds in its crystal structure. When ammonium nitrate powder is heated, these bonds need to be broken to convert it into gaseous nitrogen, oxygen, and water vapor. This decomposition process is endothermic, requiring external heat to provide activation energy to break the bonds. Therefore, when ammonium nitrate powder is heated, the temperature rises, and the reactants absorb heat to react, exhibiting endothermic properties. This, in turn, lowers the temperature of the bearing surface. The gas generated by heating ammonium nitrate is discharged through the leak 10. The inner diameter of the leak 10 is very small, allowing only gas to pass through and preventing ammonium nitrate from being carried out of the collection box 9. Inside, ammonium nitrate produces water vapor during the heating reaction. This water vapor, upon cooling, condenses into water droplets that remain inside the bearing, causing long-term corrosion. The released water vapor is adsorbed by activated carbon 11. Activated carbon 11 has a highly porous structure with numerous micropores and a large surface area. These pores and surface area provide abundant adsorption sites, enabling the adsorption and fixation of water molecules. It also has strong hydrophilicity, facilitating interaction with water molecules. This allows water molecules to more easily contact and be adsorbed by the activated carbon 11. The remaining oxygen and nitrogen can then be released to the external environment through multiple vent holes 13. Ammonium sulfate has limited ability to lower bearing temperature. To further prevent damage from excessively high bearing surface temperatures, and considering the high thermal conductivity of metallic materials, the heat generated during bearing operation is transferred to the surface of shaft 1. This increased surface temperature causes a color-changing ring 19 to change color. The color-changing ring 19 is a thermosensitive coating, whose surface color changes with temperature. By observing the color-changing ring 19, the bearing surface temperature can be monitored promptly. When the temperature becomes too high, appropriate measures can be taken to reduce the bearing temperature in time, preventing overheating and damage, thus further improving bearing protection.

[0042] Although the present invention has been described in detail with reference to the foregoing 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. 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 bearing with a rotary combined oil seal structure, characterized in that, include: A rotating shaft (1) and an outer ring (6), wherein an inner ring (2) is fixedly sleeved on the outer surface of the rotating shaft (1); Leak detection components (18), two of which are provided, each including a connecting ring (1801), the inner wall of each connecting ring (1801) having a hidden groove (1802), the interior of each hidden groove (1802) having a hollow rubber ring (1803), the outer surface of each hollow rubber ring (1803) being fixedly connected to an air outlet pipe (1804), the outer surface of each air outlet pipe (1804) being threadedly fitted with a threaded cap (1805), the outer surface of each connecting ring (1801) being fixedly fitted with four fixing blocks (1806), the outer surface of each of the eight fixing blocks (1806) being fixedly fitted with limit buckles (1807), the eight limit buckles (1807) being fixedly installed. Each pair is grouped together. The outer surface of each group of limiting buckles (1807) is rotatably fitted with a rotating ring (1808). The interior of each of the four rotating rings (1808) is threaded with a threaded tube (1809). The outer surface of each of the two connecting rings (1801) is fixedly embedded with two air pumping tubes (1810). The interior of each of the four air pumping tubes (1810) is movably embedded with a piston (1811). The bottom of each of the four pistons (1811) is provided with a rubber cup (1812). The top of each of the four pistons (1811) is fixedly installed with a connecting rod (1813). The top of each of the four connecting rods (1813) is fixedly connected with a movable block (1814). The top of each of the four movable blocks (1814) is provided with a fixing groove (1815). The four air inflator tubes (1810) are arranged in pairs. One end of one pair of air inflator tubes (1810) is fixedly inserted into the interior of two hollow rubber rings (1803), and one end of the other pair of air inflator tubes (1810) is fixedly inserted into the exterior of the connecting ring (1801).

2. The bearing with a rotary combined oil seal structure according to claim 1, characterized in that: The outer surface of the inner ring (2) is provided with a limiting groove (3), and a plurality of steel balls (4) are provided inside the limiting groove (3). The outer surface of the steel balls (4) is directly fitted with a fixing frame (5). The inner wall of the outer ring (6) is provided with an arc groove (7), and the outer surfaces of the plurality of steel balls (4) are movably connected to the inner wall of the arc groove (7).

3. The bearing with a rotary combined oil seal structure according to claim 2, characterized in that: The outer surface of the outer ring (6) is provided with a connecting groove (8), the inside of the connecting groove (8) is provided with a collection box (9), the outer surface of the collection box (9) is provided with a leakage hole (10), activated carbon (11) is provided between the inner walls of the connecting groove (8), a sealing plate (12) is fixed on the outer surface of the connecting groove (8), and a plurality of air leakage holes (13) are provided on the outer surface of the sealing plate (12).

4. The bearing with a rotary combined oil seal structure according to claim 3, characterized in that: Two first flanges (14) are fixedly connected to the outer surface of the outer ring (6). The outer surfaces of the two first flanges (14) are provided with mounting holes (15), and gaskets (16) are provided inside the two mounting holes (15).

5. The bearing with a rotary combined oil seal structure according to claim 4, characterized in that: Two oil seal assemblies (17) are provided on the outer surface of the outer ring (6). Each of the two oil seal assemblies (17) includes a ferrule (1701). A second flange (1702) is fixedly installed on the outer surface of each of the two ferrules (1701). A pressing groove (1703) is opened on the outer surface of each of the two second flanges (1702).

6. The bearing with a rotary combined oil seal structure according to claim 5, characterized in that: The two first flanges (14) are respectively fixed to the outer surfaces of the two second flanges (1702) by bolts, and the two ferrules (1701) are provided with protective grooves (1704) near one side edge.

7. The bearing with a rotary combined oil seal structure according to claim 6, characterized in that: Each of the two sleeves (1701) has a baffle (1705) fixedly connected to the inner wall on the other side, and a waterproof pad (1706) is provided on the inner wall on one side of each of the two baffles (1705).

8. The bearing with a rotary combined oil seal structure according to claim 7, characterized in that: The inner walls of the two baffles (1705) are provided with spring rings (1707), and the inner walls of the two spring rings (1707) are fixedly provided with oil-proof plates (1708).

9. The bearing with a rotary combined oil seal structure according to claim 8, characterized in that: The outer surfaces of the two sleeves (1701) are fixedly connected to the outer surfaces of the two connecting rings (1801), and the outer surface of the rotating shaft (1) is coated with a color-changing ring (19).

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