Flange type ultralow-temperature environment sealing crossed cylindrical roller bearing

Abstract

The utility model relates to a flange type ultra-low temperature environment sealing crossed cylindrical roller bearing, and relates to the field of bearings, the flange type ultra-low temperature environment sealing crossed cylindrical roller bearing comprises a bearing inner ring, a bearing outer ring and a rolling body, the bearing inner ring is rotatably connected to the bearing outer ring, and the rolling body is arranged between the bearing inner ring and the bearing outer ring; ultra-low-temperature special lubricating grease is filled between the bearing outer ring and the bearing inner ring, a first sealing ring is further arranged between the bearing inner ring and the bearing outer ring, a solid sealing ring is installed on the bearing outer ring, and the solid sealing ring can block a gap between the bearing inner ring and the bearing outer ring. The first sealing ring and the solid sealing ring are located on the two sides of the rolling body. The bearing has the effect of improving the dustproof sealing performance of the bearing in the ultralow-temperature environment.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a flange-type cryogenic environment-sealed crossed cylindrical roller bearing. Background Art

[0002] A bearing is an important component in mechanical equipment. Its main function is to support a mechanical rotating body, reduce friction during its movement, and ensure its rotational accuracy. With the development of technology, bearings are widely used in various mechanical fields, and the environments where bearings are required have gradually evolved from traditional normal-temperature environments to cryogenic environments and other environments with relatively harsh lubrication conditions.

[0003] When using a bearing in a cryogenic environment, on the one hand, lubrication needs to be considered, and on the other hand, dust-proof sealing performance needs to be considered. The existing dust-proof sealing forms applied in cryogenic environments usually use metal dust-proof sealing covers. Such a simple dust-proof sealing form is difficult to resist the invasion of external dust and fluids on the bearing, and it is easy for foreign objects to enter the bearing, resulting in excessive wear or jamming of the bearing. Utility Model Content

[0004] In order to improve the dust-proof sealing performance of bearings in cryogenic environments, the present application provides a flange-type cryogenic environment-sealed crossed cylindrical roller bearing.

[0005] A flange-type cryogenic environment-sealed crossed cylindrical roller bearing provided by the present application adopts the following technical solutions:

[0006] A flange-type cryogenic environment-sealed crossed cylindrical roller bearing includes an inner bearing ring, an outer bearing ring, and rolling elements. The inner bearing ring is rotatably connected to the outer bearing ring, the rolling elements are arranged between the inner bearing ring and the outer bearing ring, a cryogenic special grease is filled between the outer bearing ring and the inner bearing ring, a first sealing ring is further arranged between the inner bearing ring and the outer bearing ring, a solid sealing ring is installed on the outer bearing ring, the solid sealing ring can block the gap between the inner bearing ring and the outer bearing ring, and the first sealing ring and the solid sealing ring are located on both sides of the rolling elements.

[0007] By adopting the above technical solutions, by filling cryogenic special grease inside the bearing, the bearing can still maintain good lubrication effect under cryogenic working conditions, effectively reducing friction. And on both sides of the rolling elements, the gap is blocked by a solid sealing ring on one side and a sealing ring on the other side. The solid sealing ring effectively improves the sealing effect, thus ensuring the sealing performance of the bearing and effectively increasing the dust-proof sealing performance of the bearing in cryogenic environments.

[0008] Preferably, the solid sealing ring is a ceramic sealing ring.

[0009] By adopting the above technical solution, the ceramic sealing ring can be set to work normally in a low-temperature environment, which is convenient for ensuring the sealing effect of the bearing in a low-temperature environment.

[0010] Preferably, the rolling elements are annular, the rolling elements include rollers, there are a plurality of the rollers, and the plurality of rollers are fully loaded and cross-arranged between the bearing inner ring and the bearing outer ring.

[0011] By adopting the above technical solution, the cross-set rollers form an annular rolling element, which is convenient for bearing axial forces, radial forces, overturning moments and other combined loads in different directions, and ensures the rotation accuracy of the bearing.

[0012] Preferably, mounting holes are formed in the bearing outer ring, plug blocks are arranged in the mounting holes, taper pins are mounted on the bearing outer ring, and the taper pins can pass through the plug blocks and be clamped on the bearing outer ring.

[0013] By adopting the above technical solution, through the settings of the mounting holes, the plug blocks and the taper pins, after the rolling elements are installed, the plug blocks can be placed into the mounting holes, and then the plug blocks are fixed to the bearing outer ring through the taper pins, so that the rolling elements can be separated from the outside world, reducing the interference of the external environment on the rolling elements.

[0014] Preferably, a flange ring is detachably connected to the bearing inner ring.

[0015] By adopting the above technical solution, through the setting of the flange ring, it is convenient to connect the bearing inner ring with external equipment.

[0016] Preferably, the flange ring is detachably connected to the bearing inner ring by bolts.

[0017] By adopting the above technical solution, the flange ring detachably arranged by bolts is convenient for users to replace different flanges according to actual situations for use, which is convenient for use.

[0018] Preferably, a second sealing ring is arranged between the bearing inner ring and the flange ring.

[0019] By adopting the above technical solution, through the setting of the second sealing ring, the second sealing ring seals the gap between the bearing inner ring and the flange ring, effectively ensuring the sealing performance during use.

[0020] Preferably, threaded holes for connecting external components are formed in the bearing outer ring.

[0021] By adopting the above technical solution, through the setting of the threaded holes, it is convenient to connect the bearing outer ring with external components.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By providing the first sealing ring and the ceramic sealing ring, the sealing effect of the bearing is effectively enhanced. On the one hand, it can effectively separate the inside and outside of the bearing to ensure the sealing effect of the bearing. On the other hand, it can seal the grease loaded inside the bearing to prevent grease leakage, effectively increasing the dust-proof and sealing performance of the bearing in a cryogenic environment;

[0024] 2. By providing the flange ring and the threaded holes, it is convenient to connect the inner ring and the outer ring of the bearing to external components.

[0025] 3. By providing the second sealing ring, after the bearing is installed, it can ensure that the inside of the mechanism is in a closed space and also ensure that it is in a vacuum-sealed environment, increasing the versatility of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic cross-sectional view mainly showing the overall structure in an embodiment of the present application;

[0027] Figure 2 is a schematic cross-sectional view mainly showing the bearing after being connected to external components in an embodiment of the present application;

[0028] Figure 3 is a schematic view mainly showing the rolling elements.

[0029] Reference numerals: 1, inner ring of the bearing; 2, outer ring of the bearing; 3, rolling elements; 31, rollers; 4, cryogenic special grease; 5, first sealing ring; 6, solid sealing ring; 7, mounting hole; 8, plugging block; 9, taper pin; 10, flange ring; 20, second sealing ring; 30, threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will further describe the present application in detail with reference to the Figure 1 - attached Figure 3 drawings.

[0031] An embodiment of the present application discloses a flange-type cryogenic environment-sealed crossed cylindrical roller bearing.

[0032] As Figure 1 and 2 shown, a flange-type cryogenic environment-sealed crossed cylindrical roller bearing includes an outer ring 2 of the bearing, an inner ring 1 of the bearing, and rolling elements 3. The inner ring 1 of the bearing is rotatably connected to the outer ring 2 of the bearing, and cryogenic special grease 4 is filled between the outer ring 2 of the bearing and the inner ring 1 of the bearing. In this embodiment, the cryogenic special grease 4 is preferably perfluoropolyether grease, and perfluoropolyether grease can maintain stable performance in a low-temperature environment and play a good lubricating role.

[0033] AsFigure 1 and 3 As shown in 3 , the rolling elements 3 are arranged between the bearing inner ring 1 and the bearing outer ring 2. The rolling elements 3 include rollers 31. In this embodiment, the rollers 31 are cylindrical rollers 31. There are multiple rollers 31, and the multiple rollers 31 are fully filled and arranged between the bearing outer ring 2 and the bearing inner ring 1, and adjacent two rollers 31 are distributed at 90°. The multiple rollers 31 are spliced into an annular rolling element 3.

[0034] As Figure 1 shown in Figure 1 , an installation hole 7 is formed in the bearing outer ring 2. The length and width of the installation hole 7 are both greater than the length and width of the roller 31. A plug block 8 is inserted and installed in the installation hole 7. A taper pin 9 is also clamped and installed on the bearing outer ring 2. The taper pin 9 can pass through the bearing outer ring 2 and be inserted into the plug block 8, and then pass out from the other side of the plug block 8 and penetrate into the bearing outer ring 2 again, so as to connect the plug block 8 with the bearing outer ring 2. During use, the user can install the rollers 31 in sequence along the installation hole 7, thus completing the installation of the rolling element 3 between the bearing outer ring 2 and the bearing inner ring 1, and facilitating the filling of the cryogenic special grease 4. When the installation is completed, the user can insert the plug block 8 into the bearing outer ring 2, and pass a taper pin 9 through the bearing outer ring 2 to fix the plug block 8 to the bearing outer ring 2. The taper pin 9 is clamped and fixed on the bearing outer ring 2, so as to seal the rolling element 3 between the bearing outer ring 2 and the bearing inner ring 1, reducing the interference of the outside world on the inside of the bearing.

[0035] As Figure 1 shown in Figure 1 , a first sealing ring 5 is arranged between the bearing outer ring 2 and the bearing inner ring 1. In this embodiment, the first sealing ring 5 is preferably a fluorosilicone rubber sealing ring to ensure normal use in a low-temperature environment. The first sealing ring 5 is clamped and fixed on the bearing inner ring 1, and one end of the first sealing ring 5 is attached to the bearing outer ring 2, and the other end of the first sealing ring 5 is attached to the bearing outer ring 2, sealing the gap between the bearing outer ring 2 and the bearing inner ring 1. A solid sealing ring 6 is installed on the bearing outer ring 2 through bolts. In this embodiment, the solid sealing ring 6 is a ceramic sealing ring. The ceramic sealing ring can be used normally in a low-temperature environment. One end of the ceramic sealing ring is attached to the bearing outer ring 2, and the other end of the ceramic sealing ring is attached to the bearing inner ring 1, sealing the gap between the bearing outer ring 2 and the bearing inner ring 1. And the first sealing ring 5 and the second sealing ring 20 are respectively located on both sides of the rolling element 3, sealing the gaps on both sides of the bearing outer ring 2 and the bearing inner ring 1, ensuring the sealing performance, reducing the interference of the outside environment on the inside of the bearing, and at the same time sealing the grease inside to ensure that the bearing will not have a grease leakage phenomenon.

[0036] As Figure 1 and 2As shown, a flange ring 10 is detachably connected to the inner bearing ring 1 by bolts. A second sealing ring 20 is arranged between the inner bearing ring 1 and the flange ring 10. In this embodiment, the second sealing ring 20 is preferably a fluorosilicone rubber sealing ring to ensure normal use in a low-temperature environment. The second sealing ring 20 is snap-fitted and fixed on the inner bearing ring 1, and one end of the second sealing ring 20 is attached to the inner bearing ring 1, and the other end of the second sealing ring 20 is attached to the flange ring 10, blocking the gap between the second sealing ring 20 and the flange ring 10, thereby sealing the inside and outside of the bearing and ensuring the sealing effect between the outside of the bearing and the inside of the mechanism.

[0037] As Figure 1 and 2 shown, threaded holes 30 for facilitating the connection of external components are provided on the outer bearing ring 2, and the threaded holes 30 are located at one end of the outer bearing ring 2 away from the flange ring 10. During use, the user can put the inner bearing ring 1 on an external shaft and fix the flange ring 10 and the external shaft retaining ring through connecting screws. The outer bearing ring 2 is directly connected to the external housing through the threaded holes 30 and connecting screws. After the bearing is installed, it can ensure that the inside of the mechanism is in a sealed space and can also ensure that the inside is in a vacuum-sealed environment, increasing the versatility of the bearing.

[0038] It should be noted that in this application, the main components of the bearing are made of bearing steel for use in low-temperature working conditions. At the same time, the inside of the bearing is filled with ultra-low-temperature special grease 4 to ensure that the inside of the bearing does not need to be lubricated again throughout the year and to ensure the long-term use of the bearing.

[0039] The implementation principle of the embodiment of this application is as follows: When put into actual use, the inside of the bearing is filled with ultra-low-temperature special grease 4, and the gap between the outer bearing ring 2 and the inner bearing ring 1 is blocked by the first sealing ring 5 and the solid sealing ring 6, effectively ensuring the lubrication and sealing performance of the bearing. And after the bearing is installed, due to the setting of the second sealing ring 20, the two sides of the bearing can be separated for easy use.

[0040] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A flange-type ultra-low temperature sealed crossed cylindrical roller bearing, characterized in that: The invention comprises a bearing inner ring (1), a bearing outer ring (2), and a rolling element (3), wherein the bearing inner ring (1) is rotatably connected to the bearing outer ring (2), the rolling element (3) is arranged between the bearing inner ring (1) and the bearing outer ring (2), ultra-low temperature special grease (4) is filled between the bearing outer ring (2) and the bearing inner ring (1), a first sealing ring (5) is also arranged between the bearing inner ring (1) and the bearing outer ring (2), a solid sealing ring (6) is installed on the bearing outer ring (2), and the solid sealing ring (6) can seal the gap between the bearing inner ring (1) and the bearing outer ring (2), and the first sealing ring (5) and the solid sealing ring (6) are located on both sides of the rolling element (3).

2. A flange-type ultra-low temperature environment sealed crossed cylindrical roller bearing according to claim 1, characterized in that: The solid sealing ring (6) is a ceramic sealing ring.

3. A flange-type ultra-low temperature environment sealed crossed cylindrical roller bearing according to claim 1, characterized in that: The rolling body (3) is annular and comprises a roller (31). A plurality of the rollers (31) are provided, and the plurality of rollers (31) are fully loaded and cross-arranged between the bearing inner ring (1) and the bearing outer ring (2).

4. A flange-type ultra-low temperature environment sealed crossed cylindrical roller bearing according to claim 3, characterized in that: The bearing outer ring (2) is provided with a mounting hole (7), a sealing block (8) is arranged in the mounting hole (7), a tapered pin (9) is installed on the bearing outer ring (2), and the tapered pin (9) can pass through the sealing block (8) and be clamped on the bearing outer ring (2).

5. The flange-type ultra-low temperature sealed crossed cylindrical roller bearing according to claim 1, characterized in that: The bearing inner ring (1) is detachably connected to a flange ring (10).

6. A flange-type ultra-low temperature sealed crossed cylindrical roller bearing according to claim 5, characterized in that: The flange ring (10) is detachably connected to the bearing inner ring (1) via bolts.

7. The flange-type ultra-low temperature sealed crossed cylindrical roller bearing according to claim 5, characterized in that: A second sealing ring (20) is arranged between the bearing inner ring (1) and the flange ring (10).

8. The flange-type ultra-low temperature sealed crossed cylindrical roller bearing according to claim 1, characterized in that: The bearing outer ring (2) is provided with a threaded hole (30) for facilitating the connection of external components.

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