Roller bearing resistant to impact and large loads

Abstract

The present application discloses a roller bearing resistant to impact and large loads, which relates to the field of roller bearings. It includes an outer ring and an inner ring. An outer ring groove is formed on the inner wall of the outer ring, and an inner ring groove is formed on the outer wall of the inner ring. A plurality of rollers are arranged at intervals in the installation cavity, and a cage is arranged between adjacent rollers; telescopic grooves are arranged at intervals on the inner wall of the outer ring, and a limiting arc plate is slidably connected in the telescopic groove. A limiting slot for inserting and matching with the limiting arc plate is formed on the outer wall of the inner ring groove; a plurality of driving grooves communicating with the telescopic grooves are formed on the side wall of the outer ring groove, and a driving block is slidably connected in the driving groove. A driving inclined surface is formed on the side of the driving block close to the limiting arc plate, and a guiding inclined surface is formed on the side of the limiting arc plate close to the driving block. The driving block is used to push the limiting arc plate to move closer to the inner ring. A pushing inclined surface is formed on the side of the driving block close to the roller, and the roller pushes the driving block to move closer to the limiting arc plate. The present application improves the universality of the bearing size and ensures the stability of the roller fixation.

Description

Technical Field

[0001] The present application relates to the field of roller bearings, and particularly to roller bearings with high impact resistance and large load capacity. Background Art

[0002] At present, roller bearings are an important mechanical part, mainly used to support mechanical rotating bodies, reduce the friction coefficient during movement, and ensure rotational accuracy.

[0003] In the prior art, a bearing includes an inner bearing ring and an outer bearing ring. An installation cavity is formed between the inner bearing ring and the outer bearing ring. A plurality of rollers are arranged in the installation cavity. The plurality of rollers are spaced apart in the installation cavity, and the axial direction of the rollers is parallel to the axial direction of the inner bearing ring; Rotating plates are bolted to both sides of the inner bearing ring, and the rotating plates are used to limit the axial position of the rollers.

[0004] In the above prior art, the inner bearing ring and the outer bearing ring limit the rollers radially, and the two rotating plates limit the rollers axially, improving the stability of the roller rotation. In the prior art, the method of using bolts to fix the rotating plates is used to fix the rollers, which can ensure the firmness of the roller fixation; The method of using bolt connection requires a large connection size, which will increase the size of the inner bearing ring and increase the overall thickness of the bearing, reducing the inner diameter of the inner bearing ring and affecting the operating conditions of the bearing; When the size of the bolts is reduced, the thickness of the inner bearing ring is reduced, but the stability of the rotating plate fixation is reduced, and the ability of the outer ring of the rotating plate to bear pressure is small, which urgently needs to be improved. Summary of the Invention

[0005] In order to improve the universality of the bearing size and ensure the stability of the roller fixation, the present application provides a roller bearing with high impact resistance and large load capacity.

[0006] The roller bearing with high impact resistance and large load capacity provided by the present application adopts the following technical solutions:

[0007] It includes an outer ring and an inner ring. An outer ring groove is provided on the inner wall of the outer ring, and an inner ring groove is provided on the outer wall of the inner ring. The inner ring groove penetrates through one side of the inner ring. An installation cavity is formed between the inner ring groove and the outer ring groove. A plurality of rollers are arranged at intervals in the installation cavity, and a cage is arranged between adjacent rollers; A plurality of telescopic grooves are spacedly provided on the inner wall of the outer ring. A limiting arc plate is slidably connected in the telescopic groove. A limiting slot for plugging and matching with the limiting arc plate is provided on the outer wall of the inner ring groove. A plurality of the limiting arc plates form a limiting ring for limiting the rollers; A plurality of driving grooves communicating with the telescopic grooves are provided on the side wall of the outer ring groove. A driving block is slidably connected in the driving groove. A driving inclined surface is provided on the side of the driving block close to the limiting arc plate. The driving inclined surface is inclined radially outward along the direction close to the limiting arc plate. A guiding inclined surface fitting with the driving inclined surface is provided on the side of the limiting arc plate close to the driving block. The driving block is used to push the limiting arc plate to move closer to the inner ring. A pushing inclined surface is provided on the side of the driving block close to the roller. The roller pushes the driving block to move closer to the limiting arc plate.

[0008] By adopting the above technical solution, when assembling the bearing, a plurality of rollers and the cage are installed in the outer ring groove, the driving block is arranged between adjacent two rollers, and then the inner ring is inserted. After the inner ring is inserted, the driving block is pushed to move closer to the limiting arc plate by the rotation of the inner ring, so that the limiting arc plate can be pushed into the limiting slot to realize the installation of the bearing; The outer ring groove and the inner ring groove limit one side of the roller, and the limiting arc plate is further used to limit the other side of the roller, improving the stability of the axial limit of the roller. The two ends of the limiting arc plate are respectively connected to the outer ring and the inner ring, which can greatly improve the stability of using the limiting arc plate. With such a design, not only can the stability of the bearing during use be satisfied, ensuring the service life of the bearing, but also the sizes of the inner ring and the outer ring can be reduced, making the bearing have higher versatility and improving the convenience of using the bearing.

[0009] Preferably, a locking block is provided on the side wall of the driving groove. A guiding sliding surface is provided on the side of the locking block close to the roller, and a fixing surface is provided on the side of the locking block away from the roller. A locking groove for clamping and matching with the locking block is provided on the side of the driving block close to the locking block. A locking surface abutting against the fixing surface is provided on the side of the locking groove away from the roller.

[0010] By adopting the above technical solution, the driving block is pushed into the driving groove to insert the limiting arc plate into the limiting slot. Under the action of the guiding sliding surface, the locking block is clamped into the locking groove. Under the action of the locking surface and the fixing surface, the driving block is locked, improving the locking stability of the driving block.

[0011] Preferably, a first pressing inclined surface and a pressing surface are sequentially formed on one side of the telescopic groove close to the roller along the direction away from the driving block, a second pressing inclined surface is formed on the side of the telescopic groove away from the roller, and the first pressing inclined surface is parallel to the second pressing inclined surface; a first pushing surface is formed on one side of the limiting arc plate close to the roller, a second pushing surface is formed on the side of the limiting arc plate away from the roller, the first pushing surface is parallel to the second pushing surface, and the first pushing surface is parallel to the first pressing inclined surface; the first pushing surface is in abutting fit with the first pressing inclined surface, and the second pushing surface is in abutting fit with the second pressing inclined surface. The two cooperate to drive the limiting arc plate to move closer to the roller, and the pressing surface abuts against the side wall of the limiting arc plate to limit the position of the limiting arc plate.

[0012] By adopting the above technical solution, the abutting of the first pushing surface and the first pressing inclined surface plus the abutting of the second pushing surface and the second pressing inclined surface can make the limiting arc plate move closer to the roller when the limiting arc plate is pushed out, so as to achieve the purpose of pressing the inner ring, better limit the axial displacement of the roller, and improve the rolling stability of the roller; the pressing surface abuts against the side wall of the limiting arc plate, and the inclined moving limiting arc plate can be used to limit the displacement distance of the limiting arc plate, reduce the radial pressure between the limiting arc plate and the outer ring and the inner ring, and improve the stability of using the limiting arc plate.

[0013] Preferably, a limiting retaining ring is arranged on the outer wall of the inner ring, a limiting retaining groove is formed in the inner wall of the outer ring, the limiting retaining groove penetrates through the side of the outer ring away from the limiting arc plate, and the limiting retaining ring is inserted into the limiting retaining groove.

[0014] By adopting the above technical solution, the cooperation of the limiting retaining ring and the limiting retaining groove can better lock the inner ring and the outer ring, and cooperate with the locking of the limiting arc plate to improve the stability of the inner ring fixation; and such a design can seal the inside of the bearing, reduce the dust falling into the inside of the bearing, and better ensure the service life of the bearing; and through the cooperation of the limiting retaining ring and the limiting retaining groove, the position of the inner ring can be limited, reduce the excessive extrusion of the inner ring on the roller, and improve the smoothness of the contact between the inner ring and the roller.

[0015] Preferably, multiple rows of the rollers are provided, a connecting ring is arranged between two rows of the rollers, the connecting ring is connected to a plurality of the cages, an oil guide groove is formed in the inner wall of the outer ring groove along the circumference, the oil guide groove is located between two adjacent rows of the rollers, a plurality of oil guide holes communicating with the oil guide groove are formed in the outer wall of the outer ring, and a connecting ring groove for communicating a plurality of the oil guide grooves is formed in the outer wall of the outer ring.

[0016] By adopting the above technical solution, when the bearing is in use, the lubricating oil sequentially passes through the connecting ring groove, the oil guiding hole and the oil guiding groove, so as to be evenly injected into the bearing, enabling the bearing to be better lubricated, improving the lubrication effect of the bearing, and arranging the oil guiding groove between two rows of rollers can reduce the contact surface between the outer ring and the rollers, and improve the rolling effect of the rollers in the installation cavity.

[0017] Preferably, a first spacer cavity is formed between the limiting arc plate and the bottom of the limiting slot, a second spacer cavity is formed between the outer wall of the inner ring and the inner wall of the outer ring, and a third spacer cavity is formed between the limiting retaining ring and the bottom of the limiting groove.

[0018] By adopting the above technical solution, the use of the first spacer cavity, the second spacer cavity and the third spacer cavity can reduce the contact between the inner ring and the outer ring when the bearing is subjected to radial pressure, and improve the smoothness of the rotation between the outer ring and the inner ring.

[0019] Preferably, a plurality of oil injection holes are opened on both sides of the outer ring, and the oil injection holes are communicated with the installation cavity.

[0020] By adopting the above technical solution, opening the oil injection holes on both sides of the outer ring can reduce the damage to the bottom side of the outer ring groove, can better increase the contact area between the rollers and the outer ring, and ensure the bearing's ability to withstand large impact loads.

[0021] Preferably, oil guiding rings coaxial with the outer ring are opened on both sides of the outer ring. The oil guiding rings are composed of a plurality of oil collecting grooves. The plurality of oil collecting grooves are arranged in one-to-one correspondence with the oil injection holes, and the oil injection holes are arranged at one end of the oil collecting grooves. The depth of the oil collecting grooves gradually increases along the direction close to the oil injection holes.

[0022] By adopting the above technical solution, the use of a plurality of oil collecting grooves arranged in correspondence with the oil injection holes can enable the lubricating oil to be better injected into the installation cavity during use. By using the oil collecting grooves with gradually increasing depth, the lubricating oil can be driven to rotate during the rotation of the bearing, and the lubricating oil can be injected into the oil injection holes with a certain pressure, improving the effect of injecting the lubricating oil into the installation cavity.

[0023] Preferably, a plurality of dovetail grooves are spaced apart on the inner wall of the connecting ring. A dovetail block is arranged on one side of the cage close to the connecting ring, and the dovetail block is in plug-in fit with the dovetail groove.

[0024] By adopting the above technical solution, assembling the connecting ring and the cage in a splicing manner can enable the connecting ring and the cage to be assembled in the installation cavity more conveniently, and improve the convenience of assembling the connecting ring and the cage.

[0025] Preferably, a fixing hole is formed on one side of the cage close to the driving block, and the driving block is inserted and matched with the fixing hole.

[0026] By adopting the above technical solution, during the assembly process of the connecting ring and the cage, the driving block is inserted into the fixing hole, so that the connecting ring and the cage can be better positioned, improving the convenience of bearing assembly.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When assembling the bearing, a plurality of rollers and the cage are installed in the outer ring groove, the driving block is arranged between two adjacent rollers, and then the inner ring is inserted. After the inner ring is inserted, the driving block is pushed to move closer to the limiting arc plate by the rotation of the inner ring, so that the limiting arc plate can be pushed into the limiting slot to realize the installation of the bearing; the outer ring groove and the inner ring groove limit one side of the roller, and the limiting arc plate is used to limit the other side of the roller, improving the stability of the axial limit of the roller. The two ends of the limiting arc plate are respectively connected to the outer ring and the inner ring, which can greatly improve the stability of using the limiting arc plate. With such a design, not only can the stability of the bearing during use be satisfied, ensuring the service life of the bearing, but also the sizes of the inner ring and the outer ring can be reduced, making the bearing have higher versatility and improving the convenience of using the bearing;

[0029] 2. By the first pushing surface abutting against the first pressing inclined surface and the second pushing surface abutting against the second pressing inclined surface, when the limiting arc plate is pushed out, it can move closer to the roller moving cabinet, so as to achieve the purpose of pressing the inner ring, better restricting the axial displacement of the roller, and improving the stability of the roller rolling; the pressing surface abuts against the side wall of the limiting arc plate, and the inclined moving limiting arc plate can be used to limit the displacement distance of the limiting arc plate, reducing the radial pressure between the limiting arc plate and the outer ring and the inner ring, and improving the stability of using the limiting arc plate;

[0030] 3. The use of the limiting retaining ring and the limiting retaining groove can better lock the inner ring and the outer ring, and cooperate with the locking of the limiting arc plate to improve the stability of the inner ring fixation; and such a design can seal the inside of the bearing, reduce the dust falling into the inside of the bearing, and better ensure the service life of the bearing; and by the cooperation of the limiting retaining ring and the limiting retaining groove, the position of the inner ring can be restricted, reducing the excessive extrusion of the inner ring on the roller, and improving the smoothness of the contact between the inner ring and the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the impact-resistant large-load roller bearing according to Embodiment 1 of the present application;

[0032] Figure 2 It is a cross-sectional view of the impact-resistant large-load roller bearing according to Embodiment 1 of the present application;

[0033] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0034] Figure 4 is Figure 3 an enlarged schematic view of part B in

[0035] Figure 5 is a sectional view of the initial state of the drive block in Embodiment 1 of the present application;

[0036] Figure 6 is a radial sectional view of the impact-resistant large-load roller bearing in Embodiment 1 of the present application;

[0037] Figure 7 is a sectional view highlighting the limiting arc plate in Embodiment 1 of the present application;

[0038] Figure 8 is a sectional view of the impact-resistant large-load roller bearing in Embodiment 2 of the present application;

[0039] Reference numerals: 1, outer ring; 2, inner ring; 3, oil guide hole; 4, connecting ring groove; 5, drive block; 6, roller; 7, connecting ring; 8, limiting arc plate; 9, third spacer cavity; 10, limiting retaining ring; 11, limiting retaining groove; 12, second spacer cavity; 13, inner ring groove; 14, outer ring groove; 15, installation cavity; 16, first spacer cavity; 17, oil guide groove; 18, second pressing slope; 19, second pushing surface; 20, driving slope; 21, locking groove; 22, fixing surface; 23, guiding sliding surface; 24, locking block; 25, guiding slope; 26, first pressing slope; 27, pressing surface; 28, limiting slot; 29, driving slot; 30, telescopic slot; 31, cage; 32, positioning block; 33, positioning slot; 34, oil injection hole; 35, oil collecting groove; 36, dovetail groove; 37, dovetail block; 38, pushing slope; 39, first pushing surface; 40, fixing hole. Detailed implementation manners

[0040] The following further elaborates on the present application in conjunction with the attached Figure 1 - Figure 8 drawings for a more detailed description.

[0041] Embodiment 1 of the present application discloses an impact-resistant large-load roller bearing.

[0042] Embodiment 1

[0043] Refer to Figure 1, a roller bearing resistant to impact and large loads, includes an outer ring 1 and an inner ring 2, and the outer ring 1 and the inner ring 2 are coaxially arranged. An outer ring groove 14 is formed on the inner wall of the outer ring 1, and an inner ring groove 13 is formed on the outer wall of the inner ring 2. The inner ring groove 13 penetrates through one side of the inner ring 2. An installation cavity 15 is formed between the inner ring groove 13 and the outer ring groove 14. A plurality of rollers 6 are arranged at intervals in the installation cavity 15. The plurality of rollers 6 are divided into two rows. A cage 31 is installed between adjacent rollers 6 in the same row. Both sides of the cage 31 are arranged in a C shape, so that the rollers 6 can roll more stably. Three telescopic grooves 30 are formed at intervals on the inner wall of the outer ring 1. A limiting arc plate 8 is slidably connected in the telescopic groove 30. The limiting arc plate 8 is arranged in a C shape. The three limiting arc plates 8 abut against each other and form a limiting ring for restricting the rollers 6. A limiting slot 28 for inserting and matching with the limiting arc plate 8 is formed on the outer wall of the inner ring groove 13. A plurality of driving grooves 29 communicating with the telescopic grooves 30 are formed on the side wall of the outer ring groove 14. A driving block 5 is slidably connected in the driving groove 29. The driving block 5 is a rectangular block. A driving inclined surface 20 is formed on the side of the driving block 5 close to the limiting arc plate 8. The driving inclined surface 20 is inclined radially outward along the direction close to the limiting arc plate 8. A guiding inclined surface 25 fitting with the driving inclined surface 20 is formed on the side of the limiting arc plate 8 close to the driving block 5. The driving block 5 is used to push the limiting arc plate 8 to move closer to the inner ring 2. A pushing inclined surface 38 is formed on the side of the driving block 5 close to the rollers 6. The rollers 6 push the driving block 5 to move closer to the limiting arc plate 8. The rollers 6 and the cage 31 are installed in the outer ring groove 14, so that the driving block 5 is arranged between two adjacent rollers 6. Then the inner ring 2 is inserted. By rotating the rollers 6, the rollers 6 can push the driving block 5, and the driving block 5 drives the limiting arc plate 8 to be inserted into the limiting slot 28, thereby realizing the assembly of the bearing. With such a design, the bearing can be assembled more conveniently, improving the convenience of bearing assembly; through the limiting arc plate 8, the rollers 6 can be more stably limited, reducing the axial displacement of the rollers 6 and increasing the axial bearing capacity of the rollers 6. And with the use of a double-row design, the bearing can bear a greater load. Under the action of the cage 31, the rollers 6 can be more stable, enabling the rollers 6 in the bearing to better bear a greater load.

[0044] A locking block 24 is integrally formed on the side wall of the driving groove 29. The cross section of the locking block 24 is a right triangle. A guiding sliding surface 23 is formed on the side of the locking block 24 close to the rollers 6. A fixing surface 22 is formed on the side of the locking block 24 away from the rollers 6. A locking groove 21 for engaging with the locking block 24 is formed on the side of the driving block 5 close to the locking block 24. A locking surface abutting against the fixing surface 22 is formed on the side of the locking groove 21 away from the rollers 6. Through the cooperation of the fixing surface 22 and the locking surface, after the driving block 5 is pushed in place, the locking of the driving block 5 can be realized more stably, improving the stability of the use of the driving block 5.

[0045] On one side of the telescopic groove 30 close to the roller 6, a first pressing inclined surface 26 and a pressing surface 27 are successively arranged along the direction away from the driving block 5. On the side of the telescopic groove 30 away from the roller 6, a second pressing inclined surface 18 is arranged. The first pressing inclined surface 26 is parallel to the second pressing inclined surface 18. On one side of the limiting arc plate 8 close to the roller 6, a first pushing surface 39 is arranged. On the side of the limiting arc plate 8 away from the roller 6, a second pushing surface 19 is arranged. The first pushing surface 39 is parallel to the second pushing surface 19, and the first pushing surface 39 is parallel to the first pressing inclined surface 26. The first pushing surface 39 is in abutting cooperation with the first pressing inclined surface 26, and the second pushing surface 19 is in abutting cooperation with the second pressing inclined surface 18. The two cooperate to drive the limiting arc plate 8 to move closer to the roller 6, and the pressing surface 27 abuts against the side wall of the limiting arc plate 8 to limit the position of the limiting arc plate 8. With such a design, not only can the connection between the inner ring 2 and the outer ring 1 be pulled more stably, but also the locking of the limiting arc plate 8 can be better and more stably realized in cooperation with the abutment between the driving block 5 and the end of the limiting arc plate 8.

[0046] A limiting retaining ring 10 is integrally formed on the outer wall of the inner ring 2, and the limiting retaining ring 10 is arranged on the side of the inner ring 2 close to the side away from the limiting retaining groove 11. A limiting retaining groove 11 is provided on the inner wall of the outer ring 1, and the limiting retaining groove 11 penetrates through the side of the outer ring 1 away from the limiting arc plate 8. The limiting retaining ring 10 is inserted into the limiting retaining groove 11, so that the inner ring 2 and the outer ring 1 can be better locked. The two sides of the bearing can be closed in cooperation with the locking of the limiting arc plate 8, reducing the entry of dust into the bearing interior and ensuring the service life of the bearing. And through the limiting retaining ring 10 and the limiting retaining groove 11, the abutment of the inner ring 2 against the roller 6 can be reduced, improving the smoothness of the roller 6 rolling in the installation cavity 15.

[0047] A connecting ring 7 is installed between two rows of rollers 6. The connecting ring 7 is integrally formed with a plurality of cages 31. An oil guiding groove 17 is provided along the circumference on the inner wall of the outer ring groove 14. The oil guiding groove 17 is located between two adjacent rows of rollers 6. A plurality of oil guiding holes 3 communicating with the oil guiding groove 17 are provided on the outer wall of the outer ring 1. A connecting ring groove 4 for communicating a plurality of oil guiding grooves 17 is provided on the outer wall of the outer ring 1. Through the connecting ring groove 4, the oil guiding holes 3 and the oil guiding groove 17, the circulation of lubricating oil can be better realized, improving the convenience of injecting lubricating oil into the bearing. And by arranging the oil guiding groove 17 between two rows of rollers 6, the contact area between the roller 6 and the outer bottom of the outer ring groove 14 can be better ensured, improving the pressure-bearing capacity of the roller 6 and ensuring the anti-impact effect of the bearing.

[0048] A first spacer cavity 16 is formed between the limiting arc plate 8 and the bottom of the limiting slot 28, a second spacer cavity 12 is formed between the outer wall of the inner ring 2 and the inner wall of the outer ring 1, and a third spacer cavity 9 is formed between the limiting retaining ring 10 and the bottom of the limiting groove 11. Through the first spacer cavity 16, the second spacer cavity 12 and the third spacer cavity 9, when the bearing is under pressure, the radial contact between the inner ring 2 and the outer ring 1 can be reduced, enabling the bearing to rotate more smoothly, reducing the resistance on the bearing, and ensuring the usage effect of the bearing. A positioning block 32 is integrally formed on one side of the limiting arc plate 8 close to the adjacent limiting arc plate 8, and a positioning groove 33 for inserting and mating with the positioning block 32 is formed on the side wall of the adjacent limiting arc plate 8.

[0049] The implementation principle of the impact-resistant large-load roller bearing in the embodiment of the present application is as follows: When assembling the bearing, the roller 6, the connecting ring 7 and the cage 31 are installed in the installation cavity 15, the inner ring 2 is inserted, and then by rotating the roller 6, the driving block 5 can be pushed to drive the limiting arc plate 8 to be inserted into the limiting slot 28, thereby realizing the installation and locking of the bearing. During the use of the bearing, when the bearing is impacted, the roller 6 is limited by the connecting ring 7 and the cage 31, improving the bearing capacity of the bearing and the stability of the bearing during use. Coupled with the locking of the limiting arc plate 8 and the limiting slot 28, the axial direction of the bearing can be limited, improving the usage effect of the bearing.

[0050] Embodiment 2

[0051] Referring to Figure 8 , the difference between this embodiment and Embodiment 1 is that a plurality of oil injection holes 34 are opened on both sides of the outer ring 1. The oil injection holes 34 are cylindrical, and the oil injection holes 34 are communicated with the installation cavity 15. Guide oil rings coaxial with the outer ring 1 are opened on both sides of the outer ring 1. The guide oil rings are composed of a plurality of oil accumulation grooves 35. The oil accumulation grooves 35 are arranged in one-to-one correspondence with the oil injection holes 34, and the oil injection holes 34 are opened at one end of the oil accumulation grooves 35. The depth of the oil accumulation grooves 35 gradually increases in the direction close to the oil injection holes 34, so that the lubricating oil can be better injected into the installation cavity 15.

[0052] Dovetail grooves 36 are spaced apart on the inner wall of the connecting ring 7. A dovetail block 37 is integrally formed on the side of the cage 31 close to the connecting ring 7. The dovetail block 37 is inserted and mated with the dovetail groove 36, so that the cage 31 can be installed more conveniently, improving the convenience of installing the cage 31. A fixing hole 40 is opened on the side of the cage 31 close to the driving block 5, and the driving block 5 is inserted and mated with the fixing hole 40.

[0053] The implementation principle of Embodiment 2 is as follows: Different from Embodiment 1, through the oil guide holes 3 opened on both sides of the outer ring 1, lubricating oil can be more conveniently injected into the installation cavity 15, and the contact area between the roller 6 and the bottom wall of the outer ring groove 14 can be ensured, so as to ensure the bearing pressure of the bearing and improve the effect of using the bearing.

[0054] The above are all 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. Impact-resistant and high-load roller bearing, characterized by: The invention comprises an outer ring (1) and an inner ring (2), wherein the inner wall of the outer ring (1) is provided with an outer ring groove (14), and the outer wall of the inner ring (2) is provided with an inner ring groove (13), wherein the inner ring groove (13) is provided through one side of the inner ring (2), and a mounting cavity (15) is formed between the inner ring groove (13) and the outer ring groove (14), wherein a plurality of rollers (6) are arranged at intervals in the mounting cavity (15), and a retaining frame (31) is arranged between adjacent rollers (6); the inner wall of the outer ring (1) is provided with telescopic grooves (30) at intervals, wherein a limiting arc plate (8) is slidably connected in the telescopic groove (30), and the outer wall of the inner ring groove (13) is provided with a limiting slot (28) which is plugged and matched with the limiting arc plate (8), and a plurality of limiting arc plates (8) form a limiting circular ring for limiting the rollers (6); the outer ring groove (14) The side wall is provided with a plurality of driving grooves (29) connected with the telescopic grooves (30), and a driving block (5) is slidably connected in the driving grooves (29). A driving inclined surface (20) is provided on a side of the driving block (5) close to the limiting arc plate (8), and the driving inclined surface (20) is inclined from radial to outward along a direction close to the limiting arc plate (8). A guiding inclined surface (25) that is in contact with the driving inclined surface (20) is provided on a side of the limiting arc plate (8) close to the driving block (5), and the driving block (5) is used to push the limiting arc plate (8) to move close to the inner ring (2). A pushing inclined surface (38) is provided on a side of the driving block (5) close to the roller (6), and the roller (6) pushes the driving block (5) to move close to the limiting arc plate (8).

2. The roller bearing resistant to large impact loads according to claim 1, characterized in that: A locking block (24) is arranged on the side wall of the driving groove (29); a guide sliding surface (23) is provided on the side of the locking block (24) close to the roller (6); a fixing surface (22) is provided on the side of the locking block (24) away from the roller (6); a locking groove (21) for engaging with the locking block (24) is provided on the side of the driving block (5) close to the locking block (24); and a locking surface abutting against the fixing surface (22) is provided on the side of the locking groove (21) away from the roller (6).

3. The roller bearing resistant to large impact loads according to claim 2, characterized in that: A first clamping inclined surface (26) and a clamping surface (27) are sequentially provided on a side of the telescopic groove (30) close to the roller (6) in a direction away from the driving block (5); a second clamping inclined surface (18) is provided on a side of the telescopic groove (30) away from the roller (6); the first clamping inclined surface (26) is parallel to the second clamping inclined surface (18); a first pushing surface (39) is provided on a side of the limiting arc plate (8) close to the roller (6); a first pushing surface (39) is provided on a side of the limiting arc plate (8) away from the roller (6); There is a second pushing surface (19), the first pushing surface (39) is parallel to the second pushing surface (19), and the first pushing surface (39) is parallel to the first clamping inclined surface (26); the first pushing surface (39) is in abutment with the first clamping inclined surface (26), and the second pushing surface (19) is in abutment with the second clamping inclined surface (18), and the two cooperate to drive the limiting arc plate (8) to move closer to the roller (6), and the clamping surface (27) is in abutment with the side wall of the limiting arc plate (8) to limit the position of the limiting arc plate (8).

4. The roller bearing resistant to large impact loads according to claim 3, characterized in that: The outer wall of the inner ring (2) is provided with a limit stop ring (10), and the inner wall of the outer ring (1) is provided with a limit stop groove (11). The limit stop groove (11) penetrates the outer ring (1) and is provided on a side away from the limit arc plate (8), and the limit stop ring (10) is inserted into the limit stop groove (11).

5. The roller bearing resistant to large impact loads according to claim 4, characterized in that: The rollers (6) are arranged in multiple rows, a connecting ring (7) is arranged between two rows of the rollers (6), the connecting ring (7) is connected to the multiple retaining frames (31), the inner wall of the outer ring groove (14) is provided with an oil guide groove (17) along the circumference, the oil guide groove (17) is located between two adjacent rows of rollers (6), the outer wall of the outer ring (1) is provided with multiple oil guide holes (3) connected to the oil guide groove (17), and the outer wall of the outer ring (1) is provided with a connecting ring groove (4) for connecting the multiple oil guide grooves (17).

6. The roller bearing resistant to large impact loads according to claim 5, characterized in that: A first spacing cavity (16) is formed between the limiting arc plate (8) and the bottom of the limiting slot (28), a second spacing cavity (12) is formed between the outer wall of the inner ring (2) and the inner wall of the outer ring (1), and a third spacing cavity (9) is formed between the limiting retaining ring (10) and the bottom of the limiting retaining groove (11).

7. The roller bearing resistant to large impact loads according to claim 1, characterized in that: A plurality of oil injection holes (34) are provided on both sides of the outer ring (1), and the oil injection holes (34) are connected to the installation cavity (15).

8. The roller bearing resistant to large impact loads according to claim 7, characterized in that: Oil guide rings are provided on both sides of the outer ring (1) and are coaxially arranged with the outer ring (1). The oil guide rings are composed of a plurality of oil collecting grooves (35). The plurality of oil collecting grooves (35) are arranged in one-to-one correspondence with the oil injection holes (34), and the oil injection holes (34) are arranged at one end of the oil collecting grooves (35). The depth of the oil collecting grooves (35) gradually increases in a direction close to the oil injection holes (34).

9. The roller bearing resistant to large impact loads according to claim 5, characterized in that: The inner wall of the connecting ring (7) is provided with a plurality of dovetail grooves (36) at intervals, and a dovetail block (37) is provided on one side of the retaining frame (31) close to the connecting ring (7), and the dovetail block (37) is plug-fitted into the dovetail groove (36).

10. The roller bearing resistant to large impact loads according to claim 9, characterized in that: A fixing hole (40) is provided on a side of the retaining frame (31) close to the driving block (5), and the driving block (5) is plug-fitted into the fixing hole (40).

Images