Four-row cylindrical roller bearing with self-cleaning function

Abstract

The four-row cylindrical roller bearing with the self-cleaning function comprises two double-row basic units, each double-row basic unit comprises an outer ring, an inner ring and two rotating modules, each rotating module comprises a plurality of rollers and retainers arranged on the two sides of the rollers, and the rollers and the retainers are located between the outer rings and the inner rings; an inner space ring is arranged between the two rotating modules, the outer peripheral wall of the inner space ring faces the outer ring, and the inner peripheral wall of the inner space ring faces the retainer; an outer diameter groove is axially formed in the peripheral wall of the inner space ring, an end face groove is formed in the end face of the outer ring, one end of the end face groove is located between the outer ring and the inner ring, and the other end of the end face groove is located outside the outer ring. The inner space ring is arranged, the outer diameter groove is formed in the inner space ring, and the end face groove is formed in the end face of the outer ring, so that lubricating oil entering the space between the outer ring and the inner ring through the oil gas hole forms a channel, lubricating oil gas can circulate, impurities are flushed out of the bearing, self-cleaning is achieved, and the service life of the bearing is prolonged. And normal work and continuous operation of the bearing are ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cylindrical roller bearings, in particular to a four-row cylindrical roller bearing with a self-cleaning function. BACKGROUND

[0002] At present, conventional four-row cylindrical roller bearings can be divided into FC, FCD and FCDP types. Figure 4 As shown in the figure, the FCDP type comprises two outer rings, two inner rings, eight retainers, four rows of rolling elements, a support column, an outer spacer ring and a middle spacer ring. Usually, oil and gas holes are arranged on the outer peripheral wall of the outer ring to lubricate the inside of the bearing, so as to ensure the normal work of the bearing.

[0003] In actual use, it is found that some impurities and foreign matters in the external environment often enter the raceway of the rolling element, thereby affecting the normal use of the bearing. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a four-row cylindrical roller bearing with a self-cleaning function to solve the above problems.

[0005] To achieve the above purpose, the technical scheme of the application is as follows:

[0006] A four-row cylindrical roller bearing with a self-cleaning function comprises two double-row basic units, the double-row basic unit comprises an outer ring, an inner ring and two groups of rotating modules, the rotating module comprises a plurality of rollers and retainers arranged on both sides of the rollers, and the rollers and the retainers are located between the outer ring and the inner ring; an inner spacer ring is arranged between the two rotating modules, the outer peripheral wall of the inner spacer ring faces the outer ring, and the inner peripheral wall of the inner spacer ring faces the retainers; an outer diameter groove is axially arranged on the outer peripheral wall of the inner spacer ring, an end face groove is arranged on the end face of the outer ring, one end of the end face groove is located between the outer ring and the inner ring, and the other end of the end face groove is located outside the outer ring.

[0007] Preferably, the number of outer diameter grooves is a plurality, and the plurality of outer diameter grooves are arranged in a circumferential interval along the outer peripheral wall of the inner spacer ring.

[0008] Preferably, the number of end face grooves is a plurality, and the plurality of end face grooves are arranged in a circumferential interval along the outer ring.

[0009] Preferably, the four-row cylindrical roller bearing with a self-cleaning function further comprises an outer retainer and a middle spacer ring, the outer retainer is arranged on the side away from each other of the two double-row basic units, and the middle spacer ring is located between the two double-row basic units.

[0010] Preferably, the four-row cylindrical roller bearing with a self-cleaning function further comprises a support column, the rollers are sleeved on the support column, and the two ends of the support column are arranged on the retainers.

[0011] Preferably, a raceway is provided between the outer ring and the inner ring, and a plurality of rollers are located in the raceway.

[0012] The present application discloses a four-row cylindrical roller bearing with a self-cleaning function. By providing an inner spacer ring and an outer diameter groove on the inner spacer ring, and providing an end face groove on the end face of the outer ring, a channel is formed for the lubricating oil entering between the outer ring and the inner ring through the oil and gas holes, so that the lubricating oil and gas can circulate, thereby flushing impurities out of the outside of the bearing, achieving self-cleaning, and ensuring the normal operation and continuous operation of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the overall structure of this application;

[0014] Figure 2 This is a partial enlarged view of a double-row basic unit in this application;

[0015] Figure 3 This is a schematic diagram of the inner spacer structure in this application;

[0016] Figure 4 This is a schematic diagram of the bearing structure mentioned in the background technology.

[0017] In the picture:

[0018] 1. Double-row basic unit; 10. Outer ring; 11. Inner ring; 12. Cage; 13. Pillar; 14. Roller; 15. Inner spacer; 16. Outer diameter groove; 17. Oil and gas hole; 18. Middle spacer; 19. Outer retaining ring; 20. End face groove. DETAILED DESCRIPTION

[0019] The present application will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present application in a schematic manner, and therefore only show the components related to the present application.

[0020] like Figures 1-4 As shown, a four-row cylindrical roller bearing 14 with a self-cleaning function includes two double-row basic units 1, the double-row basic unit 1 includes an outer ring 10, an inner ring 11 and two sets of rotating modules, the rotating modules include a plurality of rollers 14 and retaining frames 12 arranged on both sides of the rollers 14, and the rollers 14 and the retaining frames 12 are located between the outer ring 10 and the inner ring 11; an inner spacer 15 is provided between the two rotating modules, the outer peripheral wall of the inner spacer 15 faces the outer ring 10, and the inner peripheral wall of the inner spacer 15 faces the retaining frame 12; an outer diameter groove 16 is axially provided on the outer peripheral wall of the inner spacer 15, and an end face groove 20 is provided on the end face of the outer ring 10, one end of the end face groove 20 is located between the outer ring 10 and the inner ring 11, and the other end is located outside the outer ring 10.

[0021] Two double-row basic units 1 form a four-row cylindrical roller 14 bearing.

[0022] Reference Figure 2 As shown in the figure, the arrow indicates the direction of oil and gas flow.

[0023] The setting position of the inner spacer ring 15 corresponds to the oil and gas hole 17 on the outer ring 10. After the lubricating oil enters between the outer ring 10 and the inner ring 11 from the oil and gas hole 17 on the outer ring 10, the lubricating oil can enter between the roller 14 and the outer ring 10 and the inner ring 11 under the action of the outer diameter groove 16, so as to flush out the impurities inside, and then flush out the impurities to the outside of the outer ring 10 through the end face groove 20, thereby realizing the self-cleaning function and ensuring the stability of the bearing during operation.

[0024] By setting the inner spacer ring 15 and the outer diameter groove 16 on the inner spacer ring 15, and setting the end face groove 20 on the end face of the outer ring 10, the lubricating oil entering between the outer ring 10 and the inner ring 11 through the oil and gas hole 17 forms a channel to enable the lubricating oil and gas to flow, thereby flushing out the impurities outside the bearing, realizing self-cleaning, and ensuring the normal operation and continuous operation of the bearing.

[0025] In some further embodiments, the number of outer diameter grooves 16 is multiple, and the multiple outer diameter grooves 16 are circumferentially spaced apart along the outer peripheral wall of the inner spacer ring 15.

[0026] The outer diameter groove 16 is circumferentially provided with multiple outer diameter grooves 16 to ensure the sufficiency of the oil and gas flow to the roller 14.

[0027] Preferably, the outer diameter groove 16 can be arranged corresponding to the oil and gas hole 17 on the outer ring 10.

[0028] In some further embodiments, the number of end face grooves 20 is multiple, and the multiple end face grooves 20 are circumferentially spaced apart along the outer ring 10.

[0029] The end face groove 20 is circumferentially provided with multiple end face grooves 20, which can not only ensure the limiting of the axial abutment, but also can flush out the impurities outside the bearing.

[0030] In some further embodiments, it further comprises an outer retainer 19 and a middle spacer ring 18, the outer retainer 19 is arranged on the side away from each other of the two double basic units 1, and the middle spacer ring 18 is located between the two double basic units 1.

[0031] The outer retainer 19 is used for abutting and limiting the end of the outer ring 10 located outside in the two double basic units 1, and the middle spacer ring 18 is located between the two double basic units, which is used for limiting the end of the outer ring 10 relatively located inside.

[0032] In some further embodiments, it further comprises a support column 13, the roller 14 is sleeved on the support column 13, and the two ends of the support column 13 are arranged on the retainer 12.

[0033] The rollers 14 are sleeved on the columns 13 and can rotate relative to the columns 13, and the two ends of the columns 13 are arranged on the retainer 12, thereby realizing the rotary support of the rollers 14.

[0034] In some further embodiments, a raceway is arranged between the outer ring 10 and the inner ring 11, and the rollers 14 are arranged in the raceway.

[0035] The rollers 14 are all arranged in the raceway, the raceway can limit the rollers 14 to a certain extent, and can also ensure the compactness and stability of the entire bearing mechanism.

[0036] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A four-row cylindrical roller bearing with self-cleaning function, characterized in that: The invention comprises two double-row basic units (1), wherein the double-row basic units (1) comprise an outer ring (10), an inner ring (11) and two sets of rotating modules, wherein the rotating modules comprise a plurality of rollers (14) and retaining frames (12) arranged on both sides of the rollers (14), wherein the rollers (14) and the retaining frames (12) are located between the outer ring (10) and the inner ring (11); an inner spacer (15) is provided between the two rotating modules, wherein the outer peripheral wall of the inner spacer (15) faces the outer ring (10), and the inner peripheral wall of the inner spacer (15) faces the retaining frame (12); an outer diameter groove (16) is axially provided on the outer peripheral wall of the inner spacer (15), and an end face groove (20) is provided on the end face of the outer ring (10), wherein one end of the end face groove (20) is located between the outer ring (10) and the inner ring (11), and the other end is located outside the outer ring (10).

2. A four-row cylindrical roller bearing with self-cleaning function according to claim 1, characterized in that: There are multiple outer diameter grooves (16), and the multiple outer diameter grooves (16) are arranged at intervals along the outer peripheral wall of the inner spacer (15) in the circumferential direction.

3. A four-row cylindrical roller bearing with self-cleaning function according to claim 2, characterized in that: There are a plurality of end face grooves (20), and the plurality of end face grooves (20) are arranged at intervals along the circumference of the outer ring (10).

4. A four-row cylindrical roller bearing with self-cleaning function according to claim 3, characterized in that: It also includes an outer retaining ring (19) and a middle spacer ring (18), wherein the outer retaining ring (19) is arranged on the side of the two double-row basic units (1) facing away from each other, and the middle spacer ring (18) is located between the two double-row basic units (1).

5. A four-row cylindrical roller bearing with self-cleaning function according to claim 4, characterized in that: It also includes a pillar (13), the roller (14) is sleeved on the pillar (13), and both ends of the pillar (13) are arranged on the retaining frame (12).

6. A four-row cylindrical roller bearing with self-cleaning function according to claim 5, characterized in that: A raceway is provided between the outer ring (10) and the inner ring (11), and a plurality of rollers (14) are located in the raceway.

Images