Cylindrical roller bearing retainer convenient to oil

Abstract

The utility model discloses a cylindrical roller bearing retainer convenient for refueling, which comprises a retainer body, a plurality of roller grooves are arranged on the retainer body, cylindrical rollers are rotatably connected in the plurality of roller grooves, an inner ring is rotatably connected on the inner surface of the retainer body, an outer ring is rotatably connected on the outer surface of the retainer body, and the inner ring and the outer ring are arranged in the retainer body. Oil tanks are fixedly connected to the upper surface and the lower surface of the retainer body, a plurality of oil discharge ports are formed in the oil tanks, a plurality of sliding rails are fixedly connected to the inner surfaces of the oil tanks, and springs are fixedly connected to the inner surfaces of the sliding rails. And when the rotating speed of the bearing is increased, the centrifugal force is increased, the opening degree of the sealing cover of the oil discharge port is increased, and the discharge amount of the lubricating oil is correspondingly increased, so that the lubricating requirement under the high-speed working condition is met.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a cage of a cylindrical roller bearing which is convenient for refueling. Background Art

[0002] The existing cage of a cylindrical roller bearing is a key component of the cylindrical roller bearing. Its main function is to evenly separate the cylindrical rollers so that the rollers can roll smoothly in the raceway and maintain their relative positions to avoid mutual collision and friction between the rollers.

[0003] However, during its use, there is no automatic lubrication function. During high-speed operation, the lubricating oil may not be replenished in time to the contact area between the rollers and the raceway, which will lead to a significant increase in the friction coefficient due to the increase in direct contact between metals. Moreover, during high-speed operation, the existing cage cannot adjust the supply of lubricating oil according to the rotational speed. The lubrication method without an automatic adjustment function is difficult to provide a thick and stable oil film at high speeds. When the bearing rotates at high speed, the oil film may rupture, resulting in direct contact between the rollers and the raceway, increasing wear and energy loss. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a cage of a cylindrical roller bearing which is convenient for refueling. After adding lubricating oil into the interior of the fuel tank through the oil injection port, when the bearing rotates at high speed, under the action of centrifugal force, the slider will move outward, thereby driving the cover plate to move and opening the oil discharge port. At this time, the oil will automatically drain from the interior of the fuel tank to achieve automatic lubrication, ensuring that there is always lubricating oil between the rollers and the raceway, enabling the bearing to maintain a good lubrication state during high-speed operation, and being able to control the discharge of lubricating oil according to the magnitude of the centrifugal force, matching the high-speed operation of the bearing. When the rotational speed of the bearing increases, the centrifugal force increases, the spring will be compressed more, the opening degree of the sealing cover of the oil discharge port will increase, and the discharge amount of the lubricating oil will also increase accordingly, so as to meet the lubrication requirements under high-speed conditions.

[0005] The present utility model also provides a cylindrical roller bearing cage facilitating refueling as described above, comprising: a cage body, on which a plurality of roller grooves are provided, and cylindrical rollers are rotatably connected inside the plurality of roller grooves; an inner ring is rotatably connected to the inner surface of the cage body; an outer ring is rotatably connected to the outer surface of the cage body; fuel tanks are fixedly connected to both the upper surface and the lower surface of the cage body; a plurality of oil discharge ports are provided on the fuel tanks; a plurality of slide rails are fixedly connected to the inner surface of the fuel tanks; springs are fixedly connected to the inner surfaces of the slide rails; the other ends of the springs are fixedly connected to sliders; a cover plate is fixedly connected to the side surface of the slider; the cover plate is movably connected to the oil discharge port; an oil filling port is provided on the upper surface of the fuel tank; and a sealing cover is movably connected to the inner wall of the oil filling port.

[0006] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, a sealing piece is fixedly connected to the lower surface of the cover plate, and the sealing piece is movably connected to the oil filling port.

[0007] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, dust covers are movably connected to both the upper surface and the lower surface of the inner ring and the outer ring; side plates are fixedly connected to the side surfaces of the dust covers, and the side plates are movably connected to the inner ring and the outer ring.

[0008] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, a rubber pad is fixedly connected to the lower surface of the dust cover, and the rubber pad is movably connected to the upper surface of the fuel tank.

[0009] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, four card slots are provided on each of the two dust covers, and the four card slots are symmetrically arranged.

[0010] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, a buckle is movably connected inside the card slot, and an anti-slip coating is provided on the inner surface of the buckle, and the anti-slip coating is movably connected to the card slot.

[0011] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, a connecting block is fixedly connected to the upper surface of one of the dust covers, and a slot is provided on the connecting block.

[0012] For a cylindrical roller bearing cage facilitating refueling according to the present utility model, a cushion block is fixedly connected to the lower surface of the other dust cover, and the cushion block is in clearance fit with the slot.

[0013] Beneficial effects

[0014] 1. Compared with the prior art, for the cage of the cylindrical roller bearing facilitating refueling, after adding lubricating oil into the interior of the fuel tank through the oil injection port, when the bearing rotates at high speed, under the action of centrifugal force, the slider will move outward, thereby driving the cover plate to move and opening the oil drain port. At this time, the oil will automatically drain from the interior of the fuel tank to achieve automatic lubrication, ensuring that there is always lubricating oil between the rollers and the raceways, enabling the bearing to maintain a good lubrication state during high-speed operation, and being able to control the discharge of lubricating oil according to the magnitude of the centrifugal force, matching the high-speed operation of the bearing. When the rotational speed of the bearing increases, the centrifugal force increases, the spring will be more compressed, the opening degree of the sealing cover of the oil drain port will increase, and the discharge amount of lubricating oil will also increase accordingly, thus meeting the lubrication requirements under high-speed working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present utility model in conjunction with the drawings and embodiments;

[0016] Figure 1 is the front view structure diagram of the cage of the cylindrical roller bearing facilitating refueling of the present utility model;

[0017] Figure 2 is the front view sectional structure diagram of the cage of the cylindrical roller bearing facilitating refueling of the present utility model;

[0018] Figure 3 is the left view sectional structure diagram of the cage of the cylindrical roller bearing facilitating refueling of the present utility model;

[0019] Figure 4 is the bottom view structure diagram of the cage of the cylindrical roller bearing facilitating refueling of the present utility model.

[0020] Legend Explanation:

[0021] 1. Slot; 2. Connecting block; 3. Card slot; 4. Outer ring; 5. Buckle; 6. Spacer; 7. Inner ring; 8. Cover plate; 9. Slider; 10. Slide rail; 11. Spring; 12. Oil drain port; 13. Cylindrical roller; 14. Cage body; 15. Side plate; 16. Dust cover; 17. Anti-slip coating; 18. Rubber pad; 19. Sealing piece; 20. Sealing cover; 21. Oil injection port; 22. Roller groove; 23. Fuel tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0023] Refer to Figures 1-4, in an embodiment of the utility model, a cage for a cylindrical roller bearing facilitating refueling includes: a cage body 14 for supporting cylindrical rollers 13. A plurality of roller grooves 22 are provided on the cage body 14 for carrying the cylindrical rollers 13. The cylindrical rollers 13 are rotatably connected inside the plurality of roller grooves 22. The inner surface of the cage body 14 is rotatably connected to an inner ring 7, and the outer surface of the cage body 14 is rotatably connected to an outer ring 4. Dust covers 16 are movably connected to the upper and lower surfaces of the inner ring 7 and the outer ring 4. A side plate 15 is fixedly connected to the side surface of the dust cover 16, and the side plate 15 is movably connected to the inner ring 7 and the outer ring 4. A rubber pad 18 is fixedly connected to the lower surface of the dust cover 16, and the rubber pad 18 is movably connected to the upper surface of an oil tank 23. Four card slots 3 are provided on each of the two dust covers 16, and the four card slots 3 are symmetrically arranged. A buckle 5 is movably connected inside the card slot 3. An anti-slip coating 17 is provided on the inner surface of the buckle 5, and the anti-slip coating 17 is movably connected to the card slot 3. A connecting block 2 is fixedly connected to the upper surface of one of the dust covers 16, and a slot 1 is provided on the connecting block 2.

[0024] A cushion block 6 is fixedly connected to the lower surface of the other dust cover 16, and the cushion block 6 is in clearance fit with the slot 1. Oil tanks 23 are fixedly connected to the upper and lower surfaces of the cage body 14 for storing oil. A plurality of oil discharge ports 12 are provided on the oil tank 23 for discharging lubricating oil to the surfaces of the cylindrical rollers 13 and the roller grooves 22. A plurality of slide rails 10 are fixedly connected to the inner surface of the oil tank 23 for enabling a slider 9 to slide linearly inside. A spring 11 is fixedly connected to the inner surface of the slide rail 10 for resetting the slider 9. The other end of the spring 11 is fixedly connected to the slider 9. A cover plate 8 is fixedly connected to the side surface of the slider 9 for shielding the oil discharge port 12. A sealing piece 19 is fixedly connected to the lower surface of the cover plate 8, and the sealing piece 19 is movably connected to an oil injection port 21. The cover plate 8 is movably connected to the oil discharge port 12. An oil injection port 21 is provided on the upper surface of the oil tank 23, and a sealing cover 20 is movably connected to the inner wall of the oil injection port 21.

[0025] Working principle: When in use, when the bearing starts to operate and the rotational speed is low, due to the small centrifugal force, the centrifugal force acting on the slider 9 is not sufficient to overcome the elastic force of the spring 11. At this time, the slider 9 basically remains in the initial position, and the cover plate 8 continues to block the oil drain port 12, and a large amount of lubricating oil will not be discharged from the oil drain port 12. Only a small amount of lubricating oil may slowly seep out through the tiny gap between the cover plate 8 and the oil drain port 12 to provide preliminary lubrication for the cylindrical roller 13 and the roller groove 22. As the rotational speed of the bearing gradually increases, the centrifugal force increases. When the centrifugal force is greater than the elastic force of the spring 11, the slider 9 will move outward along the slide rail 10. While the slider 9 moves outward, it will drive the cover plate 8 to move together, causing the cover plate 8 to gradually open the oil drain port 12. As the rotational speed further increases and the centrifugal force increases, the spring 11 will be further compressed, the opening degree of the sealing cover of the oil drain port 12 will increase, and the discharge amount of the lubricating oil will also increase accordingly. The lubricating oil discharged from the oil drain port 12 will accurately flow to the surfaces of the cylindrical roller 13 and the roller groove 22 to provide sufficient lubrication for them, ensuring that the bearing maintains a good lubrication state during high-speed operation.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A cylindrical roller bearing cage facilitating refueling, characterized in that, Comprising: A cage body (14) is provided with a plurality of roller grooves (22) thereon. A cylindrical roller (13) is rotatably connected inside each of the plurality of roller grooves (22). The inner surface of the cage body (14) is rotatably connected to an inner ring (7), and the outer surface of the cage body (14) is rotatably connected to an outer ring (4). The upper and lower surfaces of the cage body (14) are fixedly connected with oil tanks (23); The oil tank (23) is provided with a plurality of oil drain ports (12). A plurality of slide rails (10) are fixedly connected to the inner surface of the oil tank (23). A spring (11) is fixedly connected to the inner surface of the slide rail (10). The other end of the spring (11) is fixedly connected to a slider (9). A cover plate (8) is fixedly connected to the side surface of the slider (9). The cover plate (8) is movably connected to the oil drain port (12). An oil filling port (21) is provided on the upper surface of the oil tank (23). A sealing cover (20) is movably connected to the inner wall of the oil filling port (21).

2. The cage of a cylindrical roller bearing facilitating refueling according to claim 1, wherein, A sealing sheet (19) is fixedly connected to the lower surface of the cover plate (8). The sealing sheet (19) is movably connected to the oil filling port (21).

3. A cage for a cylindrical roller bearing facilitating refueling according to claim 1, characterized in that, Dust covers (16) are movably connected to the upper and lower surfaces of the inner ring (7) and the outer ring (4). A side plate (15) is fixedly connected to the side surface of the dust cover (16). The side plate (15) is movably connected to the inner ring (7) and the outer ring (4).

4. The cage of a cylindrical roller bearing facilitating refueling according to claim 3, characterized in that, A rubber pad (18) is fixedly connected to the lower surface of the dust cover (16). The rubber pad (18) is movably connected to the upper surface of the oil tank (23).

5. A cage for a cylindrical roller bearing facilitating refueling according to claim 3, characterized in that, Four card slots (3) are provided on each of the two dust covers (16). The four card slots (3) are symmetrically arranged.

6. A cage for a cylindrical roller bearing facilitating refueling according to claim 5, characterized in that, A buckle (5) is movably connected inside the card slot (3). An anti-slip coating (17) is provided on the inner surface of the buckle (5). The anti-slip coating (17) is movably connected to the card slot (3).

7. A cage for a cylindrical roller bearing facilitating refueling according to claim 3, characterized in that, A connecting block (2) is fixedly connected to the upper surface of one of the dust covers (16). A slot (1) is provided on the connecting block (2).

8. A cage for cylindrical roller bearings facilitating refueling according to claim 7, characterized in that, A cushion block (6) is fixedly connected to the lower surface of the other dust cover (16). The cushion block (6) is in clearance fit with the slot (1).

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