Impact-resistant large-load roller bearing

Abstract

The invention discloses an impact-resistant large-load roller bearing and relates to the field of roller bearings, the impact-resistant large-load roller bearing comprises an outer ring and an inner ring, an outer ring groove is formed in the inner wall of the outer ring, an inner ring groove is formed in the outer wall of the inner ring, a plurality of rollers are arranged in a mounting cavity at intervals, and a retainer is arranged between every two adjacent rollers; telescopic grooves are formed in the inner wall of the outer ring at intervals, limiting arc plates are slidably connected into the telescopic grooves, and limiting inserting grooves matched with the limiting arc plates in an inserted mode are formed in the outer wall of the inner ring groove. A plurality of driving grooves communicating with the telescopic grooves are formed in the side wall of the outer ring groove, driving blocks are slidably connected into the driving grooves, driving slopes are formed in the sides, close to the limiting arc plates, of the driving blocks, guiding slopes are formed in the sides, close to the driving blocks, of the limiting arc plates, and the driving blocks are used for pushing the limiting arc plates to move towards the inner ring. Pushing slopes are arranged on the sides, close to the rollers, of the driving blocks, and the rollers push the driving blocks to move close to the limiting arc plates. The bearing size is improved, the universality is achieved, and the fixing stability of the rolling wheel is ensured.

Description

Technical Field

[0001] The present application relates to the field of roller bearings, and in particular to roller bearings resistant to impact and large loads. 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 rotation accuracy.

[0003] In the prior art, a bearing comprises a bearing inner ring and a bearing outer ring, wherein an installation cavity is formed between the bearing inner ring and the bearing outer ring, wherein a plurality of rollers are arranged in the installation cavity, wherein the plurality of rollers are arranged in the installation cavity at intervals, and the axial direction of the rollers is arranged parallel to the axial direction of the bearing inner ring; a rotating plate is bolted to both sides of the bearing inner ring, and the rotating plate is used to limit the axial position of the roller.

[0004] In the above-mentioned related technologies, the inner ring of the bearing and the outer ring of the bearing limit the roller radially, and the two rotating plates limit the roller axially, thereby improving the rolling stability of the roller. In the prior art, the roller is fixed by fixing the rotating plate with bolts, which can ensure the firmness of the roller fixation; the bolt connection method requires a larger connection size, which will increase the size of the inner ring of the bearing, increase the overall thickness of the bearing, reduce the inner diameter of the inner ring of the bearing, and affect the operating conditions of the bearing; when the size of the bolt is reduced, the thickness of the inner ring of the bearing is reduced, but the stability of the rotating plate fixation will be reduced, making the outer ring of the rotating plate less capable of bearing pressure, which urgently needs to be improved. Summary of the invention

[0005] In order to improve the universality of bearing dimensions and ensure the stability of roller fixation, the present application provides a roller bearing that is impact-resistant and has a large load.

[0006] The impact-resistant and high-load roller bearing provided in this application adopts the following technical solution: The invention comprises an outer ring and an inner ring, wherein the inner wall of the outer ring is provided with an outer ring groove, the outer wall of the inner ring is provided with an inner ring groove, the inner ring groove penetrates through one side of the inner ring, a mounting cavity is formed between the inner ring groove and the outer ring groove, a plurality of rollers are arranged in the mounting cavity at intervals, and a retaining frame is arranged between adjacent rollers; telescopic grooves are arranged in the inner wall of the outer ring at intervals, a limiting arc plate is slidably connected in the telescopic groove, a limiting slot which is plugged and matched with the limiting arc plate is arranged in the outer wall of the inner ring groove, and a plurality of the limiting arc plates form a limiting circular ring for limiting the rollers; the side wall of the outer ring groove is provided with a A plurality of driving grooves connected with the telescopic grooves are provided, and a driving block is slidably connected in the driving groove. A driving inclined surface is provided on a side of the driving block close to the limiting arc plate, and the driving inclined surface is inclined radially outward along a direction close to the limiting arc plate. A guiding inclined surface that fits the driving inclined surface is provided on a side of the limiting arc plate close to the driving block, and the driving block is used to push the limiting arc plate to move close to the inner ring. A pushing inclined surface is provided on a side of the driving block close to the roller, and the roller pushes the driving block to move close to the limiting arc plate.

[0007] By adopting the above technical solution, when assembling the bearing, multiple rollers and retainers are installed in the outer ring groove, the drive block is set between two adjacent rollers, and then the inner ring is inserted. After the inner ring is inserted, the drive block is pushed to move close to the limit arc plate through the rotation of the inner ring, so that the limit arc plate can be pushed to insert into the limit slot to achieve the installation of the bearing; the outer ring groove and the inner ring groove are used to limit one side of the roller, and the limit arc plate is used to limit the other side of the roller to improve the stability of the axial limit of the roller. The two ends of the limit arc plate are connected to the outer ring and the inner ring respectively, which can greatly improve the stability of the use of the limit arc plate. The use of such a design can not only meet the stability of the use of the bearing and ensure the service life of the bearing, but also reduce the size of the inner ring and the outer ring, so that the bearing has higher versatility and improves the convenience of using the bearing.

[0008] Preferably, a locking block is provided on the side wall of the driving groove, a guide sliding surface is provided on the side of the locking block close to the roller, a fixing surface is provided on the side of the locking block away from the roller, a locking groove which is engaged with the locking block is provided on the side of the driving block close to the locking block, and a locking surface which abuts against the fixing surface is provided on the side of the locking groove away from the roller.

[0009] By adopting the above technical solution, the driving block is pushed into the driving groove, so that the limiting arc plate is inserted into the limiting slot. Under the action of the guiding sliding surface, the locking block is inserted into the locking groove. Under the action of the locking surface and the fixing surface, the driving block is locked, thereby improving the locking stability of the driving block.

[0010] Preferably, a first clamping slope and a clamping surface are sequentially provided on a side of the expansion slot close to the roller along a direction away from the driving block, a second clamping slope is provided on a side of the expansion slot away from the roller, and the first clamping slope is parallel to the second clamping slope; a first pushing surface is provided on a side of the limiting arc plate close to the roller, and a second pushing surface is provided on a 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 clamping slope; the first pushing surface abuts and cooperates with the first clamping slope, and the second pushing surface abuts and cooperates with the second clamping slope, and the cooperation between the two can drive the limiting arc plate to move closer to the roller, and the clamping surface abuts against the side wall of the limiting arc plate to limit the position of the limiting arc plate.

[0011] By adopting the above technical scheme, through the abutment between the first pushing surface and the first clamping inclined surface and the abutment between the second pushing surface and the second clamping inclined surface, the limiting arc plate can be moved closer to the roller when it is pushed out, thereby achieving the purpose of clamping the inner ring, better limiting the axial displacement of the roller, and improving the rolling stability of the roller; the clamping surface abuts against the side wall of the limiting arc plate, and then cooperates with the inclined moving limiting arc plate to achieve the purpose of limiting 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.

[0012] Preferably, a limit stop ring is provided on the outer wall of the inner ring, a limit stop groove is provided on the inner wall of the outer ring, the limit stop groove penetrates the side of the outer ring away from the limit arc plate, and the limit stop ring is inserted into the limit stop groove.

[0013] By adopting the above technical solution, the use of the limit stop ring and the limit stop groove can better lock the inner ring and the outer ring, and cooperate with the locking of the limit arc plate to improve the stability of the inner ring fixation; and such a design can block the inside of the bearing, reduce dust falling inside the bearing, and better ensure the service life of the bearing; and through the cooperation of the limit stop ring and the limit stop groove, the position of the inner ring can be restricted, reducing excessive squeezing of the inner ring on the roller, and improving the smoothness of the contact between the inner ring and the roller.

[0014] Preferably, the rollers are arranged in multiple rows, a connecting ring is arranged between two rows of rollers, the connecting ring is connected to the multiple retaining frames, the inner wall of the outer ring groove is provided with an oil guide groove along the circumference, the oil guide groove is located between two adjacent rows of rollers, the outer wall of the outer ring is provided with a plurality of oil guide holes connected to the oil guide groove, and the outer wall of the outer ring is provided with a connecting ring groove for connecting the multiple oil guide grooves.

[0015] By adopting the above technical solution, when the bearing is in use, the lubricating oil passes through the connecting ring groove, the oil guide hole and the oil guide groove in sequence, and is thus evenly injected into the bearing, so that the bearing can be better injected with lubricating oil, thereby improving the lubrication effect of the bearing, and the oil guide groove is arranged between the two rows of rollers, which can reduce the impact on the contact surface between the outer ring and the roller, thereby improving the rolling effect of the roller in the mounting cavity.

[0016] Preferably, a first spacing cavity is formed between the limiting arc plate and the bottom of the limiting slot, a second spacing cavity is formed between the outer wall of the inner ring and the inner wall of the outer ring, and a third spacing cavity is formed between the limiting stop ring and the bottom of the limiting stop groove.

[0017] By adopting the above technical solution, using 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, thereby improving the smoothness of rotation between the outer ring and the inner ring.

[0018] Preferably, a plurality of oil injection holes are provided on both sides of the outer ring, and the oil injection holes are communicated with the installation cavity.

[0019] By adopting the above technical solution, the oil filling holes are opened on both sides of the outer ring, which can reduce the damage to the bottom side of the outer ring groove, and can better increase the contact area between the roller and the outer ring, ensuring the bearing's ability to withstand large impact loads.

[0020] Preferably, oil guide rings are provided on both sides of the outer ring coaxially with the outer ring, and the oil guide rings are composed of a plurality of oil collecting grooves, and the plurality of oil collecting grooves are arranged in one-to-one correspondence with the oil filling holes, and the oil filling holes are arranged at one end of the oil collecting grooves, and the depth of the oil collecting grooves gradually increases in the direction approaching the oil filling holes.

[0021] By adopting the above technical solution and setting a plurality of oil collecting grooves corresponding to the oil filling holes, the lubricating oil can be better injected into the mounting cavity during use. By adopting 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 filling hole with a certain pressure, thereby improving the effect of injecting the lubricating oil into the mounting cavity.

[0022] Preferably, a plurality of dovetail grooves are provided at intervals on the inner wall of the connecting ring, and a dovetail block is provided on a side of the retaining frame close to the connecting ring, and the dovetail block is plug-fitted with the dovetail groove.

[0023] By adopting the above technical solution and assembling the connecting ring and the retaining frame in a splicing manner, the connecting ring and the retaining frame can be assembled more conveniently in the installation cavity, thereby improving the convenience of assembling the connecting ring and the retaining frame.

[0024] Preferably, a fixing hole is formed on a side of the retaining frame close to the driving block, and the driving block is plug-fitted into the fixing hole.

[0025] By adopting the above technical solution, during the assembly process of the connecting ring and the retaining frame, the connecting ring and the retaining frame can be better positioned by plugging the driving block into the fixing hole, thereby improving the convenience of bearing assembly.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When assembling the bearing, install multiple rollers and retaining frames in the outer ring groove, set the drive block between two adjacent rollers, and then insert the inner ring. After the inner ring is inserted, the inner ring rotates to push the drive block toward the limit arc plate, so that the limit arc plate can be pushed into the limit slot to install the bearing. Limit one side of the roller through the outer ring groove and the inner ring groove, and then limit the other side of the roller with the limit arc plate to improve the stability of the roller axial limit. The two ends of the limit arc plate are connected to the outer ring and the inner ring respectively, which can greatly improve the stability of the use of the limit arc plate. Such a design can not only meet the stability of the bearing and ensure the service life of the bearing, but also reduce the size of the inner ring and the outer ring, so that the bearing has higher versatility and improves the convenience of using the bearing. 2. By abutting the first pushing surface against the first pressing inclined surface and the second pushing surface against the second pressing inclined surface, the cabinet can be moved 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 then cooperates with the inclined moving limiting arc plate to achieve the purpose of limiting 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 the use of the limiting arc plate; 3. The use of the limit stop ring in conjunction with the limit stop groove can better lock the inner ring and the outer ring, and cooperate with the locking of the limit arc plate to improve the stability of the inner ring fixation; and such a design can block the inside of the bearing, reduce dust falling inside the bearing, and better ensure the service life of the bearing; and through the cooperation of the limit stop ring and the limit stop groove, the position of the inner ring can be restricted, reducing excessive squeezing 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

[0027] Figure 1 This is a schematic diagram of the overall structure of a roller bearing resistant to impact and large loads according to Example 1 of the present application; Figure 2 A cross-sectional view of a roller bearing resistant to impact and large loads according to Example 1 of the present application; Figure 3 for Figure 2 A magnified schematic diagram of part A; Figure 4 for Figure 3 A magnified schematic diagram of part B; Figure 5 This is a cross-sectional view of the initial state of the driving block in Example 1 of the present application; Figure 6 This is a radial cross-sectional view of a roller bearing resistant to impact and large loads according to Example 1 of the present application; Figure 7 Embodiment 1 of the present application is a cross-sectional view highlighting the limiting arc plate; Figure 8 A cross-sectional view of a roller bearing resistant to impact and large loads according to Example 2 of the present application; Reference numerals: 1, outer ring; 2, inner ring; 3, oil guide hole; 4, connecting ring groove; 5, driving block; 6, roller; 7, connecting ring; 8, limit arc plate; 9, third spacing cavity; 10, limit stop ring; 11, limit stop groove; 12, second spacing cavity; 13, inner ring groove; 14, outer ring groove; 15, installation cavity; 16, first spacing cavity; 17, oil guide groove; 18, second pressing inclined surface; 19, second pushing surface; 20, driving inclined surface; 21. Locking groove; 22. Fixed surface; 23. Guide sliding surface; 24. Locking block; 25. Guide inclined surface; 26. First clamping inclined surface; 27. Clamping surface; 28. Limiting slot; 29. ​​Driving groove; 30. Telescopic groove; 31. Retaining frame; 32. Positioning block; 33. Positioning groove; 34. Oil filling hole; 35. Oil collecting groove; 36. Dovetail groove; 37. Dovetail block; 38. Pushing inclined surface; 39. First pushing surface; 40. Fixed hole. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 - Figure 8 This application is described in further detail.

[0029] The embodiments of the present application disclose a roller bearing that is resistant to impact and large loads.

[0030] Example 1 Reference Figure 1The roller bearing with high impact resistance and large load comprises an outer ring 1 and an inner ring 2, and the outer ring 1 and the inner ring 2 are arranged coaxially. An outer ring groove 14 is provided on the inner wall of the outer ring 1, and an inner ring groove 13 is provided on the outer wall of the inner ring 2. 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. A plurality of rollers 6 are arranged in two rows, and a retainer 31 is installed between adjacent rollers 6 in the same row. The two sides of the retainer 31 are arranged in a C shape, so that the rollers 6 can roll more stably. Three telescopic grooves 30 are provided on the inner wall of the outer ring 1, and 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 circular ring, which is used to limit the roller 6. A limiting slot 28 plug-in-matched with the limiting arc plate 8 is provided on the outer wall of the inner ring groove 13. The side wall of the outer ring groove 14 is provided with a plurality of driving grooves 29 connected with the telescopic groove 30. The driving block 5 is slidably connected in the driving groove 29. The driving block 5 is a rectangular block. The side of the driving block 5 close to the limiting arc plate 8 is provided with a driving inclined surface 20. The driving inclined surface 20 is inclined from the radial direction to the outside along the direction close to the limiting arc plate 8. The side of the limiting arc plate 8 close to the driving block 5 is provided with a guide inclined surface 25 that fits with the driving inclined surface 20. The driving block 5 is used to push the limiting arc plate 8 to move close to the inner ring 2. The side of the driving block 5 close to the roller 6 is provided with a pushing inclined surface 38. The roller 6 pushes the driving block 5 to move close to the limiting arc plate 8. The roller 6 and the retainer 31 are installed in the outer ring groove 14, so that the driving block 5 is set between two adjacent rollers 6, and then the inner ring 2 is inserted. By rotating the roller 6, the roller 6 can push the driving block 5, so that 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. Such a design can make the bearing assembly more convenient and improve the convenience of bearing assembly; the limiting arc plate 8 can make the roller 6 more stably limited, reduce the axial displacement of the roller 6, and improve the axial bearing capacity of the roller 6, and the double-row design can make the bearing able to withstand a larger load. Under the action of the retainer 31, the roller 6 can be made more stable, so that the roller 6 in the bearing can better withstand a larger load.

[0031] A locking block 24 is integrally formed on the side wall of the driving groove 29, and the cross-section of the locking block 24 is a right-angled triangle. A guiding sliding surface 23 is provided on the side of the locking block 24 close to the roller 6, and a fixing surface 22 is provided on the side of the locking block 24 away from the roller 6. A locking groove 21 that is snap-fitted 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 that abuts against the fixing surface 22 is provided on the side of the locking groove 21 away from the roller 6. Through the cooperation between the fixing surface 22 and the locking surface, the driving block 5 can be locked more stably after being pushed into place, thereby improving the stability of the use of the driving block 5.

[0032] A first clamping slope 26 and a clamping surface 27 are sequentially provided on the side of the telescopic groove 30 close to the roller 6 in the direction away from the driving block 5, and a second clamping slope 18 is provided on the side of the telescopic groove 30 away from the roller 6, and the first clamping slope 26 is parallel to the second clamping slope 18; a first pushing surface 39 is provided on the side of the limiting arc plate 8 close to the roller 6, and a second pushing surface 19 is provided on the side of the limiting arc plate 8 away from the roller 6, 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 slope 26; the first pushing surface 39 abuts and cooperates with the first clamping slope 26, and the second pushing surface 19 abuts and cooperates with the second clamping slope 18, and the cooperation between the two can drive the limiting arc plate 8 to move close to the roller 6, and the clamping surface 27 abuts against the side wall of the limiting arc plate 8 to limit the position of the limiting arc plate 8. Such a design can not only more stably pull the connection between the inner ring 2 and the outer ring 1, but also better and more stably lock the limit arc plate 8 by cooperating with the abutment between the drive block 5 and the end of the limit arc plate 8.

[0033] The outer wall of the inner ring 2 is integrally formed with a limit stop ring 10, which is arranged near the side of the inner ring 2 away from the limit stop groove 11. The inner wall of the outer ring 1 is provided with a limit stop groove 11, which runs through the side of the outer ring 1 away from the limit arc plate 8. The limit stop ring 10 is inserted into the limit stop groove 11, so that the inner ring 2 and the outer ring 1 can be better locked. The locking of the limit arc plate 8 can close the two sides of the bearing, reduce dust from entering the bearing, and ensure the service life of the bearing. In addition, the limit stop ring 10 and the limit stop groove 11 can reduce the contact of the inner ring 2 with the roller 6, and improve the smoothness of the roller 6 rolling in the installation cavity 15.

[0034] A connecting ring 7 is installed between the two rows of rollers 6. The connecting ring 7 is integrally formed with a plurality of retaining frames 31. An oil guide groove 17 is provided on the inner wall of the outer ring groove 14 along the circumference. The oil guide groove 17 is located between two adjacent rows of rollers 6. A plurality of oil guide holes 3 connected to the oil guide groove 17 are provided on the outer wall of the outer ring 1. A connecting ring groove 4 for connecting the plurality of oil guide grooves 17 is provided on the outer wall of the outer ring 1. By connecting the ring groove 4, the oil guide holes 3 and the oil guide groove 17, the circulation of lubricating oil can be better achieved, and the convenience of injecting lubricating oil into the bearing is improved. In addition, the oil guide groove 17 is arranged between the two rows of rollers 6, so as to better ensure the contact area between the roller 6 and the outer bottom of the outer ring groove 14, improve the pressure-bearing capacity of the roller 6, and ensure the impact resistance of the bearing.

[0035] 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 retaining 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, so that the bearing can rotate more smoothly, reduce the resistance of the bearing, and ensure the effect of the bearing. The limiting arc plate 8 is integrally formed with a positioning block 32 on one side adjacent to the limiting arc plate 8, and the side wall adjacent to the limiting arc plate 8 is provided with a positioning groove 33 that is plugged and matched with the positioning block 32.

[0036] The implementation principle of the impact-resistant and high-load roller bearing of the embodiment of the present application is as follows: when assembling the bearing, install the roller 6, the connecting ring 7 and the retaining frame 31 in the installation cavity 15, insert the inner ring 2, and then rotate the roller 6, which can push the driving block 5 and drive the limiting arc plate 8 to insert into the limiting slot 28, thereby realizing the installation and locking of the bearing. During the use of the bearing, when the bearing is subjected to impact force, the roller 6 is limited by the connecting ring 7 and the retaining frame 31, thereby improving the bearing capacity of the bearing and improving the stability of the bearing. In combination with the locking of the limiting arc plate 8 and the limiting slot 28, the axial direction of the bearing can be limited, thereby improving the effect of the bearing.

[0037] Example 2 Reference Figure 8 The difference between this embodiment and embodiment 1 is that multiple oil filling holes 34 are provided on both sides of the outer ring 1, the oil filling holes 34 are cylindrical, and the oil filling holes 34 are connected to the installation cavity 15; oil guide rings are provided on both sides of the outer ring 1 coaxially arranged with the outer ring 1, and the oil guide rings are composed of multiple oil collecting grooves 35, and the oil collecting grooves 35 are arranged one by one with the oil filling holes 34, and the oil filling holes 34 are opened at one end of the oil collecting grooves 35, and the depth of the oil collecting grooves 35 gradually increases in the direction close to the oil filling holes 34, so that the lubricating oil can be better injected into the installation cavity 15.

[0038] The inner wall of the connecting ring 7 is provided with dovetail grooves 36 at intervals, and a dovetail block 37 is integrally formed on the side of the retaining frame 31 close to the connecting ring 7, and the dovetail block 37 is plugged into the dovetail groove 36, so that the retaining frame 31 can be installed more conveniently, thereby improving the convenience of installing the retaining frame 31. A fixing hole 40 is provided on the side of the retaining frame 31 close to the driving block 5, and the driving block 5 is plugged into the fixing hole 40.

[0039] The implementation principle of Example 2 is as follows: The difference from Example 1 is that, by opening the oil guide holes 3 on both sides of the outer ring 1, the lubricating oil can be more conveniently injected into the mounting cavity 15, and the contact area between the roller 6 and the bottom wall of the outer ring groove 14 can be ensured, thereby ensuring that the bearing can withstand pressure and improving the effect of using the bearing.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present 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 slot (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 slot (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); and a first pushing surface (39) is provided on a side of the limiting arc plate (8) away from the roller (6). 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 cooperation between the two can 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