Noise reduction type cylindrical roller bearing

Abstract

The invention discloses a noise reduction type cylindrical roller bearing, and relates to the technical field of roller bearings, the noise reduction type cylindrical roller bearing comprises an outer shaft ring and an inner shaft ring, a middle ring is movably arranged between the outer shaft ring and the inner shaft ring, the inner surface wall of the outer shaft ring is wrapped with a sound absorption felt sleeve, and two first sliding sleeves are fixedly installed on the inner surface wall of the outer shaft ring; two second sliding sleeves are fixedly installed on the outer surface wall of the middle ring, a set of rolling wheels are movably arranged in each first sliding sleeve, a ball bearing is fixedly installed on the inner surface wall of each rolling wheel, and a solid rod is fixedly inserted into the inner surface wall of an inner shaft of each ball bearing; according to the bearing related oil injection assembly, the mechanical transmission principle is adopted, on the basis that a traditional structure is not damaged, oil body release can be autonomously completed, self-engine kinetic energy is used for intervening and intermittently completing assembly movement, the oil body is injected into a roller structure in time, noise is rapidly processed, and the bearing related oil injection assembly is convenient to use and high in practicability. And the optimal oil injection opportunity is won.

Description

Technical Field

[0001] The invention relates to the technical field of roller bearings, in particular to a noise-reducing cylindrical roller bearing. Background Art

[0002] Cylindrical roller bearings are rolling bearings in which the rolling elements are cylindrical rollers that roll between the raceways of the inner and outer rings to reduce friction and transfer loads.

[0003] During the use of roller bearings, noise will be generated by many aspects such as materials, structure, lubrication, installation and use. Excessive noise fully indicates that the friction between the linkage materials is too large, which will lead to an increase in the vibration frequency of the rollers. Continuing to use will accelerate the damage to the internal components of the bearing. Therefore, bearings with noise reduction capabilities can greatly extend their service life.

[0004] However, existing cylindrical roller bearings have the following disadvantages:

[0005] 1) With the development of technology, the existing bearing manufacturing process is extremely mature. Therefore, the main reason for the noise generated when the bearing is used depends on the lubrication intensity. Traditional bearings do not have the ability to self-lubricate and mostly rely on manual work. Therefore, it is impossible to add oil in time according to the actual situation, resulting in delays in the best time to fill oil.

[0006] 2) Traditional bearings are limited by the oil injection method, the oil injection amount cannot be effectively controlled, and the oil injection from the side cannot fully act on the target position, resulting in poor subsequent lubrication effect.

[0007] Therefore, we propose a noise-reducing cylindrical roller bearing to solve the above-mentioned problems. Summary of the invention

[0008] The present invention improves the shape of the traditional outer shaft, reserves an independent assembly space, and sets up a complete mechanical oil guide component. When the friction coefficient of the material increases, its vibration frequency increases in real time, and the generated amplitude value also changes synchronously. When the amplitude value reaches the range of the maximum elasticity of the set mechanical component, the oil pushing component can be compressed and rebounded to complete the oil filling process independently. Because the mechanical movement is limited by the amplitude strength, intermittent release of the oil body can be achieved to solve the problems raised by the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a noise-reducing cylindrical roller bearing, comprising an outer shaft ring and an inner shaft ring, a middle ring being movably arranged between the outer shaft ring and the inner shaft ring, the inner surface wall of the outer shaft ring being wrapped with a sound-absorbing felt sleeve, two first sliding sleeves being fixedly installed on the inner surface wall of the outer shaft ring, and two second sliding sleeves being fixedly installed on the outer surface wall of the middle ring, a group of rollers being movably arranged inside each of the first sliding sleeves, a ball bearing being fixedly installed on the inner surface wall of each of the rollers, a solid rod being fixedly inserted on the inner surface wall of the inner shaft of each of the ball bearings, an associated frame being fixedly installed on one end of the outer wall of each of the solid rods, a fan-shaped oil storage tank being fixedly installed between opposite sides of the two groups of the associated frames, a rectangular frame being fixedly installed on the outer surface wall of the fan-shaped oil storage tank, a split warehouse body being fixedly installed on the inner surface wall of the rectangular frame, and the split warehouse body being placed inside the fan-shaped oil storage tank, and the inner surface wall of the split warehouse body being fixed A pneumatic inner cavity is fixedly installed, and an upper sealing plate is fixedly installed on the top of the pneumatic inner cavity, an adaptable piston disc is movably provided inside the pneumatic inner cavity, and an outer wall of the adaptable piston disc is provided with a group of sealing rings, the top of the adaptable piston disc is provided with two inner opening holes, and the bottom of the inner wall of each of the inner opening holes is fixedly installed with an extension frame, two metal sliding rods are movably inserted inside the adaptable piston disc, and each metal sliding rod is movably inserted inside a corresponding extension frame, the top of each metal sliding rod is fixedly inserted inside the upper sealing plate, two circular rings are fixedly installed on the bottom of the upper sealing plate, an active spring is fixedly installed between each circular ring and a corresponding extension frame, a limiting baffle is fixedly installed on the outer wall of each metal sliding rod, a sealing ring plate is movably inserted between the inner walls of the two second sliding sleeves, and a lower oil square pipe is fixedly connected between the inner wall of the fan-shaped oil storage tank and the outer wall of the sealing ring plate.

[0010] Preferably, annular inner grooves are provided on both sides of the outer wall of the outer shaft ring, an annular sealing plate is connected between each of the annular inner grooves and one side of the outer wall of the middle ring by bolts, and the outer wall of each roller is wrapped with a rubber friction-enhancing sleeve.

[0011] Preferably, a cross bar is movably inserted between the two sides of the inner wall of the oil lowering square tube, and a blocking square plate is fixedly inserted inside the cross bar, and the size of the blocking square plate is adapted to the oil lowering square tube.

[0012] Preferably, rebound damping parts are fixedly installed on both sides of the outer wall of the lower oil square tube, active rollers are fixedly sleeved at both ends of the outer wall of the cross bar, and a traction belt is movably sleeved between each rebound damping part and the outer wall of the active roller.

[0013] Preferably, a plurality of first inner grooves are provided inside the center ring, two dustproof outer rings are provided between the center ring and the inner shaft ring, a group of retaining frames are fixedly installed between opposite sides of the two dustproof outer rings, and a plurality of cylindrical roller bodies are movably provided between the outer walls of each two retaining frames.

[0014] Preferably, second inner grooves are provided on both sides of the outer wall of the sector-shaped oil storage tank, and the inner surface wall of each of the second inner grooves is provided with a group of oil filling joints, and each oil filling joint is connected to the interior of the sector-shaped oil storage tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention improves the shape of the traditional outer shaft, reserves an independent assembly space, and sets a complete mechanical oil guide component. When the friction coefficient of the material increases, its vibration frequency increases in real time, and the generated amplitude value also changes synchronously. When the amplitude value reaches the range of the maximum elasticity of the set mechanical component, the oil pushing component can be compressed and rebounded to independently complete the oil filling process. Because the mechanical movement is limited by the amplitude strength, the intermittent release of the oil body can be achieved. The bearing-related oiling component adopts the mechanical transmission principle, and can independently complete the oil release without destroying the traditional structure. It uses spontaneous kinetic energy intervention to intermittently complete the movement of the component, and timely injects the oil into the roller structure, quickly handles the generation of noise, and wins the best oil filling time.

[0017] 2. The oil injection assembly provided in the present invention can add oil to the roller structure from two directions. Since the mechanical movement is limited by the amplitude intensity, the amount of oil released each time can be effectively controlled. The lubricated roller structure can greatly reduce the friction coefficient between materials, and the vibration frequency can be effectively controlled, so that the stored oil can be fully utilized. In addition, the bearing adopts the built-in oil injection method, and the oil released in different directions can directly act on the roller structure, effectively increasing the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the main structure of a noise-reducing cylindrical roller bearing of the present invention;

[0019] Figure 2 This is a three-dimensional diagram of the disassembled structure of a noise-reducing cylindrical roller bearing of the present invention;

[0020] Figure 3 A three-dimensional diagram of a part of the structure of a noise-reducing cylindrical roller bearing of the present invention;

[0021] Figure 4 This is a three-dimensional diagram of the connected structure of the fan-shaped oil storage tank in a noise-reducing cylindrical roller bearing of the present invention;

[0022] Figure 5 A noise-reducing cylindrical roller bearing according to the present invention is Figure 4 A magnified stereoscopic image of the structure at center A;

[0023] Figure 6 It is an enlarged stereoscopic view of the structure of connecting the split chambers in a noise-reducing cylindrical roller bearing of the present invention;

[0024] Figure 7 It is an enlarged stereoscopic view of the combined structure of the center ring and the blocking ring plate in a noise reduction cylindrical roller bearing of the present invention;

[0025] Figure 8 A schematic diagram of a load mode in a noise-reducing cylindrical roller bearing of the present invention;

[0026] Fig. 9 This is a schematic diagram of the second load mode of a noise-reducing cylindrical roller bearing of the present invention.

[0027] In the figure: 1, outer shaft ring; 2, middle ring; 3, annular inner groove; 4, annular sealing plate; 5, sound-absorbing felt sleeve; 6, first sliding sleeve; 7, second sliding sleeve; 8, roller; 9, ball bearing; 10, solid rod; 11, associated frame; 12, rubber friction-enhancing sleeve; 13, fan-shaped oil storage tank; 14, rectangular frame; 15, divided warehouse body; 16, air pressure inner cavity; 17, upper sealing plate; 18, adapter piston disc; 19, inner opening hole; 20, extension frame; 21. Metal slide bar; 22. Circular ring; 23. Active spring; 24. Limit baffle; 25. Sealing ring; 26. Oil lowering square tube; 27. Sealing ring plate; 28. First inner slot; 29. ​​Cross bar; 30. Sealing square plate; 31. Rebound damping element; 32. Active roller; 33. Traction belt; 34. Dustproof outer ring; 35. Cage; 36. Cylindrical roller body; 37. Inner shaft ring; 38. Second inner slot; 39. Oil filling joint. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please see attached Figure 1 -Attached Fig. 9 As shown, the present invention provides a technical solution: a noise-reducing cylindrical roller bearing, comprising an outer shaft ring 1 and an inner shaft ring 37, an intermediate ring 2 is movably provided between the outer shaft ring 1 and the inner shaft ring 37, and the inner surface wall of the outer shaft ring 1 is wrapped with a sound-absorbing felt sleeve 5.

[0030] Embodiment 1, according to Figure 1 , Figure 2 and Figure 3 As shown, annular inner grooves 3 are provided on both sides of the outer wall of the outer shaft ring 1, and an annular sealing plate 4 is connected between each annular inner groove 3 and one side of the outer wall of the middle ring 2 by bolts.

[0031] The effect achieved by the entire embodiment 1 is: this part of the components serves the purpose of improving the traditional outer shaft, and the outer shaft ring 1 and the middle ring 2 are spliced ​​in a segmented assembly manner, so that a larger enclosed space is formed in the improved outer shaft. On the one hand, installation conditions are reserved for the collaborative components, and on the other hand, it is easy to disassemble the bearing body, reducing the difficulty of subsequent maintenance and cleaning.

[0032] Embodiment 2, according to Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, two first sleeves 6 are fixedly installed on the inner surface wall of the outer shaft ring 1, and two second sleeves 7 are fixedly installed on the outer surface wall of the middle ring 2. A group of rollers 8 are movably installed inside each first sleeve 6, and the outer wall of each roller 8 is wrapped with a rubber friction-increasing sleeve 12. A ball bearing 9 is fixedly installed on the inner surface wall of each roller 8. A solid rod 10 is fixedly inserted into the inner surface wall of the inner shaft of each ball bearing 9, and an associated frame 11 is fixedly installed on one end of the outer wall of each solid rod 10. A fan-shaped oil storage tank 13 is fixedly installed between the opposite sides of the two groups of associated frames 11, and a sealing ring plate 27 is movably inserted between the inner surfaces of the two second sleeves 7. An oil-discharging square pipe 26 is fixedly connected between the inner surface wall of the fan-shaped oil storage tank 13 and the outer wall of the sealing ring plate 27.

[0033] The effect achieved by the entire embodiment 2 is: because the ball bearings 9 are installed in the rollers 8, the physical properties of the ball bearings 9 are utilized to enable the fan-shaped oil storage tank 13 and the blocking ring plate 27 to remain stationary without affecting the synchronous rotation of the outer shaft ring 1 and the middle ring 2, thereby ensuring that the oil injection assembly is always in a relatively stable state, and the vibration generated in the bearing can be fully fed back to the air pressure inner cavity 16.

[0034] Embodiment 3, according to Figure 4 , Figure 5 and Figure 6As shown, a rectangular frame 14 is fixedly installed on the outer surface wall of the sector-shaped oil storage tank 13, a segmented warehouse body 15 is fixedly installed on the inner surface wall of the rectangular frame 14, and the segmented warehouse body 15 is placed inside the sector-shaped oil storage tank 13, a gas pressure cavity 16 is fixedly installed on the inner surface wall of the segmented warehouse body 15, an upper sealing plate 17 is fixedly installed on the top of the gas pressure cavity 16, an adapting piston disc 18 is movably provided inside the gas pressure cavity 16, a group of sealing rings 25 are provided on the outer surface wall of the adapting piston disc 18, and two inner opening holes 19 are provided on the top of the adapting piston disc 18, each of which is provided with a sealing ring 25. An extension frame 20 is fixedly installed at the bottom of the inner wall of the inner opening hole 19, and two metal slide rods 21 are movably inserted inside the piston disk 18, and each metal slide rod 21 is movably inserted inside a corresponding extension frame 20, and the top of each metal slide rod 21 is fixedly inserted inside the upper sealing plate 17, and two circular rings 22 are fixedly installed at the bottom of the upper sealing plate 17, and an active spring 23 is fixedly installed between each circular ring 22 and a corresponding extension frame 20, and a limiting baffle 24 is fixedly installed on the outer wall of each metal slide rod 21.

[0035] The effect achieved by the entire embodiment 3 is as follows: this partial structure mainly utilizes vibration to cause the spring to compress, and then the rebound reaction force combined with the air pressure pushes the adapter piston disk 18 to squeeze out the oil body. The provided active spring 23 can have an initial stiffness coefficient K value according to its own specifications. The real-time vibration of the built-in component can generate a random amplitude A value. According to the physical relationship between the vibration ratio and the elastic potential energy, the initial physical quantity is substituted into the maximum elastic potential energy formula, and it can be accurately determined how much amplitude strength can force the active spring 23 to compress.

[0036] The assembly description of the components is that since the divided chamber 15 is located inside the fan-shaped oil storage tank 13, and the air pressure inner cavity 16 is independent of the fan-shaped oil storage tank 13, under the sealing of the adapter piston disk 18, it is ensured that the oil will not enter the air pressure inner cavity 16, thereby avoiding affecting the mechanical movement. Due to the random change of the amplitude value, the compression rebound can be performed when the movement condition of the active spring 23 is met, and then the mechanical movement can be performed intermittently, thereby realizing the controllability of the oil release.

[0037] Embodiment 4, according to Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, a cross bar 29 is movably inserted between the two sides of the inner wall of the lower oil square tube 26, and a blocking square plate 30 is fixedly inserted inside the cross bar 29. The size of the blocking square plate 30 is adapted to the lower oil square tube 26. Rebound damping members 31 are fixedly installed on both sides of the outer wall of the lower oil square tube 26, and active rollers 32 are fixedly sleeved at both ends of the outer wall of the cross bar 29. A traction belt 33 is movably sleeved between the outer wall of each rebound damping member 31 and the active roller 32. Two dustproof outer rings 34 are provided between the middle ring 2 and the inner shaft ring 37, and a group of retaining frames 35 are fixedly installed between the opposite sides of the two dustproof outer rings 34. A plurality of cylindrical roller bodies 36 are movably provided between the outer walls of every two retaining frames 35. Second inner slots 38 are provided on both sides of the outer wall of the sector-shaped oil storage tank 13, and a group of oil filling joints 39 are provided on the inner surface wall of each second inner slot 38, and each oil filling joint 39 is connected to the interior of the sector-shaped oil storage tank 13.

[0038] The effect achieved by the entire embodiment 4 is as follows: the provided sealing ring plate 27 can, on the one hand, play the role of sealing the oil body to prevent the oil body from seeping into the space between the outer shaft ring 1 and the middle ring 2; on the other hand, the lower oil square tube 26 and the sealing ring plate 27 are fixedly connected, and an oil discharge port is reserved on the inner wall of the sealing ring plate 27, and a group of first inner grooves 28 are equidistantly distributed, so that no matter how the middle ring 2 rotates, the oil body can enter the interior of the middle ring 2 and fully act on the built-in cylindrical roller body 36. This oil injection method can play a lubricating role in the first time, greatly reduce oil waste, and quickly suppress the continuous emission of noise.

[0039] right Figure 8 and Fig. 9 Discussion on the effect: When the inner shaft of the bearing body is under rotational load, the fan-shaped distribution of the oil injection assembly is utilized to make the downward pressure of multiple components converge to the midpoint, and the outer shaft ring 1 and the middle ring 2 can remain in a static state. When the outer shaft of the bearing body is under rotational load, the outer shaft ring 1 and the middle ring 2 can be assembled as a whole under the annular sealing plate 4, so the outer shaft ring 1 and the middle ring 2 can rotate synchronously. The oil injection assembly includes multiple cooperative components to ensure that the rotation of the outer shaft and the oil injection assembly are not interfered with. Under ideal conditions, the rotation of the outer shaft and the inner shaft can allow the oil to be injected into the roller structure from top to bottom. If the oil injection assembly slides to the bottom of the middle ring 2, the reaction force and air pressure reverse thrust can also be used to inject the oil into the roller structure from bottom to top.

[0040] The working principle of the whole structure is as follows: in the first oil injection mode, external power is applied to the inner shaft ring 37, and a group of cylindrical roller bodies 36 can rotate in the middle ring 2 and the inner shaft ring 37. When the built-in oil body is reduced, the friction coefficient between the materials increases, and vibration is generated. The amplitude intensity can be changed in real time, and can directly act on the active spring 23 in the air pressure cavity 16. When the A value meets the K value within a period of time, the active spring 23 can be compressed appropriately, and the tensile force formed can directly act on the connected extension frame 20. The movable connection between the matching piston disc 18 and the metal slide rod 21 is used to ensure that the matching piston disc 18 and the extension frame 20 are retracted without being restricted by the structure, and the matching piston disc 18 can be slowly driven to retract into the air pressure cavity 16 to increase the air pressure in the air pressure cavity 16, and further the reaction force generated by the active spring 23 and the high air pressure generated The reverse thrust can quickly release the adapter piston disk 18, and part of the oil in the fan-shaped oil storage tank 13 can be added to the lower oil square tube 26 to realize the impact on the oil in the lower oil square tube 26. When it exceeds the damping limit of the rebound damping member 31, the movable connectivity of the lower oil square tube 26 and the cross bar 29 can be used. On the one hand, the blocking square plate 30 expands the channel in the lower oil square tube 26 to open, and part of the oil is released and can be directly injected into the roller assembly from the end of the lower oil square tube 26 and the first inner groove 28. On the other hand, the rotation of the cross bar 29 can synchronously drive the active roller 32, and under the traction of the traction belt 33, the internal structure of the rebound damping member 31 is forced to tighten. After the impact of the oil in the lower oil square tube 26 ends, the internal structure of the rebound damping member 31 is reset, and the traction belt 33 drives the active roller 32 and the blocking square plate 30 to reset in turn, completing an oil filling process.

[0041] Oil filling method 2: external power is applied to the outer shaft ring 1, and the outer shaft ring 1 and the middle ring 2 are assembled by the annular sealing plate 4, and the two can rotate synchronously. The outer shaft ring 1 is characterized by that each roller 8 is provided with a ball bearing 9. Through the physical properties of the ball bearing 9, each group of rollers 8 can rotate in a corresponding first sleeve 6, and combined with the movable connection between the second sleeve 7 and the sealing ring plate 27, the solid rod 10 and its connected parts are in a relatively static state. If the oil filling assembly is moved to the bottom of the middle ring 2, the oil filling method is the same as the above method, but the reaction force and reverse thrust generated are opposite to the direction of method one, and the adapter piston disc 18 can complete the oil body pushing from bottom to top, and intermittently complete the oil filling of the roller assembly.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise-reducing cylindrical roller bearing, characterized in that: The invention comprises an outer shaft ring (1) and an inner shaft ring (37), wherein a middle ring (2) is movably arranged between the outer shaft ring (1) and the inner shaft ring (37), the inner surface wall of the outer shaft ring (1) is wrapped with a sound-absorbing felt sleeve (5), the inner surface wall of the outer shaft ring (1) is fixedly installed with two first sliding sleeves (6), the outer surface wall of the middle ring (2) is fixedly installed with two second sliding sleeves (7), each of the first sliding sleeves (6) is movably arranged inside a group of rollers (8), the inner surface wall of each roller (8) is fixedly installed with a ball bearing (9), and the inner surface wall of the inner shaft of each ball bearing (9) is fixedly installed with a ball bearing (9). A solid rod (10) is fixedly inserted, and an associated frame (11) is fixedly installed on one end of the outer wall of each solid rod (10), and a fan-shaped oil storage tank (13) is fixedly installed between the opposite sides of two sets of associated frames (11), and a rectangular frame (14) is fixedly installed on the outer wall of the fan-shaped oil storage tank (13), and a split chamber (15) is fixedly installed on the inner wall of the rectangular frame (14), and the split chamber (15) is placed inside the fan-shaped oil storage tank (13), and an air pressure inner cavity (16) is fixedly installed on the inner wall of the split chamber (15), and the air pressure inner cavity (16) An upper sealing plate (17) is fixedly installed on the top, an adaptable piston disc (18) is movably installed inside the air pressure inner chamber (16), and a group of sealing rings (25) are provided on the outer wall of the adaptable piston disc (18). Two inner opening holes (19) are opened on the top of the adaptable piston disc (18), and an extension frame (20) is fixedly installed on the bottom of the inner wall of each inner opening hole (19). Two metal sliding rods (21) are movably inserted inside the adaptable piston disc (18), and each metal sliding rod (21) is movably inserted inside a corresponding extension frame (20). The top of the rod (21) is fixedly inserted inside the upper sealing plate (17), and two circular rings (22) are fixedly installed on the bottom of the upper sealing plate (17). An active spring (23) is fixedly installed between each circular ring (22) and a corresponding extension frame (20). A limit baffle (24) is fixedly installed on the outer wall of each metal sliding rod (21). A sealing ring plate (27) is movably inserted between the inner walls of the two second sliding sleeves (7), and a lower oil square pipe (26) is fixedly connected between the inner wall of the fan-shaped oil storage tank (13) and the outer wall of the sealing ring plate (27).

2. The noise reduction cylindrical roller bearing according to claim 1, characterized in that: Annular inner grooves (3) are provided on both sides of the outer wall of the outer shaft ring (1), and an annular sealing plate (4) is connected between each of the annular inner grooves (3) and one side of the outer wall of the middle ring (2) by bolts, and the outer wall of each of the rollers (8) is wrapped with a rubber friction-enhancing sleeve (12).

3. The noise reduction cylindrical roller bearing according to claim 1, characterized in that: A cross bar (29) is movably inserted between the two sides of the inner wall of the oil lowering square tube (26), and a sealing square plate (30) is fixedly inserted inside the cross bar (29), and the size of the sealing square plate (30) is adapted to the oil lowering square tube (26).

4. The noise reduction cylindrical roller bearing according to claim 1, characterized in that: Rebound damping components (31) are fixedly mounted on both sides of the outer wall of the oil lowering square tube (26), active rollers (32) are fixedly sleeved on both ends of the outer wall of the cross bar (29), and a traction belt (33) is movably sleeved between the outer wall of each rebound damping component (31) and the active roller (32).

5. The noise reduction cylindrical roller bearing according to claim 1, characterized in that: A plurality of first inner grooves (28) are provided inside the center ring (2), two dustproof outer rings (34) are provided between the center ring (2) and the inner shaft ring (37), a group of retaining frames (35) are fixedly installed between opposite sides of the two dustproof outer rings (34), and a plurality of cylindrical roller bodies (36) are movably provided between the outer walls of each two retaining frames (35).

6. The noise reduction cylindrical roller bearing according to claim 1, characterized in that: Second inner slots (38) are provided on both sides of the outer wall of the sector-shaped oil storage tank (13), and a group of oil injection joints (39) are provided on the inner surface wall of each of the second inner slots (38), and each of the oil injection joints (39) is connected to the interior of the sector-shaped oil storage tank (13).

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