Bearing cage

Abstract

The present invention relates to the field of cages, and more particularly to a bearing cage which includes a cage body. The cage body includes end rings and support beams. There are two end rings provided, and the support beams are telescopic beams. The two ends of the support beams are detachably clamped on the end rings. When a part of the support beams is damaged, the damaged support beams can be detached from the end rings, and then new support beams can be replaced, without having to replace the entire bearing cage, thus reducing the usage cost.

Description

Technical Field

[0001] The present invention relates to the field of cages, and particularly to a bearing cage. Background Art

[0002] As a part of a bearing, the main function of a bearing cage is to guide and drive rolling elements to roll on the correct raceways, and the bearing cage can space the rolling elements at equal intervals and distribute them evenly on the circumference of the raceway to prevent the rolling elements from colliding and rubbing against each other during operation.

[0003] Chinese Patent with Publication No. CN204512194U discloses a cylindrical roller bearing cage, which includes a cage body. There are pocket holes on the cage body. The circumferential side walls on both sides of the pocket hole are cylindrical surfaces. Oil storage grooves are formed on the circumferential side walls on both sides of the pocket hole and extend radially. The cage body includes a cage seat and a cage cover. The cage seat includes an end ring and hole beams integrally formed. A number of hole beams are evenly distributed along the circumferential direction on the end ring. The cage cover is fixedly installed on the other end of the hole beam relative to the end where it is connected to the end ring.

[0004] Although the above bearing cage can be used in cooperation with rolling elements, the hole beams and the end ring are integrally formed. If some hole beams are damaged, only the whole bearing cage can be replaced, increasing the use cost. Summary of the Invention

[0005] In order to reduce the use cost, the present application provides a bearing cage.

[0006] The bearing cage provided by the present application adopts the following technical solutions:

[0007] A bearing cage includes a cage body. The cage body includes end rings and support beams. There are two end rings. The support beams are telescopic beams, and both ends of the support beams are detachably clamped on the end rings.

[0008] By adopting the above technical solutions, when a part of the support beams is damaged, the damaged support beams can be detached from the end rings, and then new support beams can be replaced. There is no need to replace the whole bearing cage, reducing the use cost. Moreover, the support beams are telescopic beams and their lengths can be changed, which brings convenience to the installation and disassembly of the support beams.

[0009] Optionally, the support beam includes a first support beam, a second support beam and an intermediate block. There is a sliding fit between the first support beam and the intermediate block, and a sliding fit between the second support beam and the intermediate block. A first spring is connected between the first support beam and the intermediate block, and a first spring is connected between the second support beam and the intermediate block. The end ring is provided with a clamping groove and a hook. The hook is arranged on the end ring and is located within the clamping groove. A clamping sleeve is connected to one end of the first support beam away from the intermediate block and one end of the second support beam away from the intermediate block. The clamping sleeve is clamped on the hook through the clamping groove. When the clamping sleeve is clamped on the hook, there is a gap between the first support beam and the end ring, and between the second support beam and the end ring.

[0010] By adopting the above technical solution, when installing the support beam, the first support beam and the second support beam are pulled, and the first spring is stretched, changing the overall length of the support beam so that the clamping sleeve can extend into the clamping groove and be clamped on the hook. When the clamping sleeve is clamped on the hook, the first spring returns from the stretched state to the natural state, and at this time the length of the support beam returns to the initial position, completing the installation of the support beam; when disassembling the support beam, during the process of removing the clamping sleeve from the hook, the support beam needs to be stretched, the first spring is stretched, and the length of the support beam changes so that the clamping sleeve can be smoothly removed from the hook until the clamping sleeve disengages from the clamping groove, completing the disassembly of the support beam.

[0011] Optionally, plug-in blocks are connected to both sides of the intermediate block. Plug-in slots are provided on both the first support beam and the second support beam. The plug-in blocks are movably inserted into the plug-in slots. The first spring is located within the plug-in slot. When the first spring is in the natural state, the first support beam abuts against the intermediate block, and the second support beam abuts against the intermediate block.

[0012] By adopting the above technical solution, the plug-in blocks and the plug-in slots are used in combination. When the first spring is in the natural state, the first support beam abuts against the intermediate block, and the second support beam abuts against the intermediate block. At this time, the plug-in blocks are located within the plug-in slots, which can prevent the abutting parts between the first support beam and the intermediate block and between the second support beam and the intermediate block from bending under external forces, improving the stability and strength of the support beam during use.

[0013] Optionally, a magnet block is provided within the plug-in slot, and an iron block is provided on the intermediate block. The iron block is adsorbed by the magnet block.

[0014] By adopting the above technical solution, when it is necessary to change the length of the support beam, the positions of the first support beam and the second support beam change, and the magnet block and the iron block are separated to smoothly change the length of the support beam. When it is not necessary to change the length of the support beam, the iron blocks are adsorbed together by the magnet block, thereby improving the stability between the first support beam and the intermediate block, improving the stability between the second support beam and the intermediate block, and further improving the overall stability of the support beam.

[0015] Optionally, the end ring includes a base ring and a cover ring. The cover ring is connected to the base ring through a connecting member capable of changing the relative position between the cover ring and the base ring. A clamping groove is formed on the base ring, and a hook is connected to the base ring. The end of the clamping groove away from the support beam communicates with the side of the base ring close to the cover ring.

[0016] By adopting the above technical solution, when installing or disassembling the support beam, the relative position between the cover ring and the base ring is changed through the connecting member, so that the cover ring is moved away from above the base ring, exposing the clamping groove and the hook, so that it can be directly seen whether the support beam is clamped to the hook, which brings convenience to the installation and disassembly of the support beam.

[0017] Optionally, the connecting member includes a hinge pin, a positioning pin and a second spring. The cover ring is hinged to the base ring through the hinge pin. There is a mounting hole on the base ring. One end of the second spring is connected to the bottom of the mounting hole, and the other end is connected to the positioning pin. The end of the positioning pin away from the second spring is hemispherical. There is a clamping hole on the cover ring. When the end of the positioning pin away from the second spring is located in the clamping hole, the center line of the cover ring coincides with the center line of the base ring.

[0018] By adopting the above technical solution, when the cover ring is rotated forcefully, the positioning pin is pressed into the mounting hole under the extrusion force, and the second spring is compressed, thereby changing the relative position between the cover ring and the base ring, opening the cover ring, and exposing the clamping groove and the hook. At this time, the positioning pin protrudes from the mounting hole under the elastic force of the second spring. When it is necessary to restore the cover ring to its original position, rotate the cover ring. When the cover ring passes through the positioning pin, the cover ring presses the positioning pin and squeezes the positioning pin into the mounting hole. When the clamping hole is aligned with the mounting hole, the extrusion force on the positioning pin disappears, and the positioning pin enters the clamping hole under the elastic force of the second spring, thereby realizing the positioning of the cover ring and restoring the cover ring to its original position. At this time, the cover ring blocks the hook and the clamping groove.

[0019] Optionally, arc-shaped grooves matching the sidewall contour of the rolling body are provided on two opposite sidewalls of the support beam.

[0020] By adopting the above technical solution, the setting of the arc-shaped groove can enable better cooperation between the rolling body and the support beam, and improve the fit between the rolling body and the support beam.

[0021] Optionally, an oil storage hole and an oil discharge hole are provided on the sidewall of the arc-shaped groove. Both the oil storage hole and the oil discharge hole are frustum-shaped. The end with a smaller inner diameter of the oil storage hole is arranged opposite to and communicates with the end with a smaller inner diameter of the oil discharge hole. The end with a larger inner diameter of the oil discharge hole communicates with the sidewall of the arc-shaped groove.

[0022] By adopting the above technical solution, the lubricating oil is stored in the oil storage hole. Since the smaller-diameter end of the oil storage hole faces and communicates with the smaller-diameter end of the oil discharge hole, it is possible to prevent all the lubricating oil in the oil storage hole from flowing out and being used up at once. The lubricating oil can enter the oil discharge hole from the oil storage hole in small amounts multiple times and finally adhere to the rolling elements, thereby extending the lubrication duration of the rolling elements.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] When a part of the support beam is damaged, the damaged support beam can be disassembled from the end ring and then a new support beam can be replaced. There is no need to replace the entire bearing cage, which reduces the usage cost. Moreover, the support beam is a telescopic beam and its length can be changed, which brings convenience to the installation and disassembly of the support beam.

[0025] When installing the support beam, pull the first support beam and the second support beam, and the first spring is stretched, changing the overall length of the support beam so that the clamping sleeve can extend into the clamping groove and be clamped on the hook. When the clamping sleeve is clamped on the hook, the first spring returns from the stretched state to the natural state, and at this time the length of the support beam returns to the initial position, completing the installation of the support beam; when disassembling the support beam, during the process of removing the clamping sleeve from the hook, the support beam needs to be stretched, the first spring is stretched, and the length of the support beam changes so that the clamping sleeve can be smoothly removed from the hook until the clamping sleeve disengages from the clamping groove, completing the disassembly of the support beam.

[0026] When it is necessary to change the length of the support beam, the positions of the first support beam and the second support beam change, and the magnet block separates from the iron block so as to smoothly change the length of the support beam. When it is not necessary to change the length of the support beam, the iron blocks are adsorbed together by the magnet block, thereby improving the stability between the first support beam and the middle block, improving the stability between the second support beam and the middle block, and further improving the overall stability of the support beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram for embodying the bearing cage in the embodiment of the present application.

[0028] Figure 2 is a schematic structural diagram for the connection relationship between the base ring and the cover ring in the embodiment of the present application.

[0029] Figure 3 is a schematic structural diagram for embodying the connection relationship between the support beam and the base ring in the embodiment of the present application.

[0030] Figure 4 is Figure 3 the enlarged view of part A in

[0031] Figure 5 This is a schematic structural diagram for reflecting the positional relationship between the oil storage hole and the oil drain hole in the embodiments of the present application.

[0032] Explanation of the reference signs:

[0033] 1. End ring; 2. Support beam; 3. Base ring; 4. Cover ring; 5. Hinge pin; 6. Positioning pin; 7. Second spring; 8. Mounting hole; 9. Clamping hole; 10. Clamping groove; 11. Hook; 12. First support beam; 13. Second support beam; 14. Intermediate block; 15. Insertion block; 16. Insertion groove; 17. First spring; 18. Iron block; 19. Magnet block; 20. Clamping sleeve; 21. Arc-shaped groove; 22. Oil storage hole; 23. Oil drain hole. Embodiment

[0034] The embodiments of the present application disclose a bearing cage.

[0035] Referring to Figure 1 , the bearing cage includes a cage body. The cage body includes two end rings 1 and support beams 2. The support beams 2 are telescopic beams. The two ends of the support beam 2 are detachably clamped on the end ring 1, and a plurality of support beams 2 are provided. The support beams 2 are arranged in a circular array centered on the center line of the end ring 1. Pocket holes for placing rolling elements are formed between adjacent support beams 2.

[0036] Referring to Figure 1 and Figure 2 , the end ring 1 includes a base ring 3 and a cover ring 4. The support beam 2 is connected to the base ring 3. The cover ring 4 and the base ring 3 are connected by a connecting member. The connecting member can change the relative position between the cover ring 4 and the base ring 3. The connecting member includes a hinge pin 5, a positioning pin 6 and a second spring 7. The cover ring 4 is hinged to the base ring 3 through the hinge pin 5. A plurality of mounting holes 8 are provided on the base ring 3. One end of the second spring 7 is connected to the bottom of the mounting hole 8, and the other end is connected to the positioning pin 6. The end of the positioning pin 6 away from the second spring 7 is provided in a hemispherical shape. A clamping hole 9 is provided on the cover ring 4. When the end of the positioning pin 6 away from the second spring 7 is located in the clamping hole 9, the center line of the cover ring 4 coincides with the center line of the base ring 3. At this time, the second spring 7 is in a natural state.

[0037] Referring to Figure 1 and Figure 3 , a clamping groove 10 and a hook 11 are provided on the base ring 3. The hook 11 is provided on the base ring 3 and is integrally formed with the base ring 3. The clamping groove 10 penetrates through the base ring 3, that is, one end of the clamping groove 10 communicates with the side of the base ring 3 connected to the support beam 2, and the other end communicates with the side of the base ring 3 close to the cover ring 4.

[0038] Referring to Figure 1 , Figure 3 and Figure 4, the support beam 2 includes a first support beam 12, a second support beam 13 and an intermediate block 14. The intermediate block 14 is located between the first support beam 12 and the second support beam 13. There is a sliding fit between the first support beam 12 and the intermediate block 14, and a sliding fit between the second support beam 13 and the intermediate block 14. Plug-in blocks 15 are connected to both sides of the intermediate block 14. Plug-in slots 16 are provided at one end of the first support beam 12 close to the intermediate block 14 and at one end of the second support beam 13 close to the intermediate block 14. The plug-in blocks 15 are movably inserted into the plug-in slots 16. A first spring 17 is connected between the first support beam 12 and the intermediate block 14, and a first spring 17 is connected between the second support beam 13 and the intermediate block 14. The first spring 17 is located in the plug-in slot 16. One end of the first spring 17 is connected to the bottom of the plug-in slot 16, and the other end is connected to the plug-in block 15. When the first spring 17 is in its natural state, the first support beam 12 abuts against the intermediate block 14, and the second support beam 13 abuts against the intermediate block 14. A magnet block 19 is connected to the inner side wall of the plug-in slot 16, and an iron block 18 is connected to the intermediate block 14. The iron block 18 is adsorbed by the magnet block 19, and the magnet block 19 has a small volume and a small magnetic force, which will not affect the rolling elements.

[0039] Referring to Figure 3 , Figure 4 and Figure 5 , at one end of the first support beam 12 away from the intermediate block 14 and at one end of the second support beam 13 away from the intermediate block 14, clamping sleeves 20 are connected. The clamping sleeves 20 are clamped on the hooks 11 through the clamping slots 10. When the clamping sleeves 20 are clamped on the hooks 11, there are gaps between the first support beam 12 and the base ring 3 and between the second support beam 13 and the base ring 3, so that the clamping sleeves 20 can be smoothly hung on the hooks 11 or removed from the hooks 11, and the width of this gap is greater than the thickness of the plug-in blocks 15. When the first support beam 12 or the second support beam 13 abuts against the base ring 3, the plug-in blocks 15 are separated from the plug-in slots 16, so that the support beam 2 can deform, and the clamping sleeves 20 can be smoothly clamped or removed on the hooks 11.

[0040] Referring to Figure 1 and Figure 5, arc-shaped grooves 21 matching the sidewall contour of the rolling elements are provided on two opposite sidewalls of the support beam 2. Specifically, the arc-shaped grooves 21 are opened on the sidewalls of the first support beam 12, the second support beam 13, and the intermediate block 14. Oil storage holes 22 and oil discharge holes 23 are provided on the sidewalls of the arc-shaped grooves 21. Both the oil storage holes 22 and the oil discharge holes 23 are frustum-shaped. The end with a smaller inner diameter of the oil storage hole 22 is arranged opposite to and communicated with the end with a smaller inner diameter of the oil discharge hole 23. The end with a larger inner diameter of the oil discharge hole 23 is communicated with the sidewall of the arc-shaped groove 21. The lubricating oil is stored in the oil storage hole 22. The lubricating oil enters the oil discharge hole 23 through the connection between the oil storage hole 22 and the oil discharge hole 23, and then is discharged through the oil discharge hole 23 to adhere to the rolling elements, lubricating the rolling elements. And because the end with a smaller inner diameter of the oil storage hole 22 is arranged opposite to the end with a smaller inner diameter of the oil discharge hole 23, therefore, the lubricating oil in the oil storage hole 22 can enter the oil discharge hole 23 in small amounts each time, avoiding all the lubricating oil in the oil storage hole 22 directly entering the oil discharge hole 23.

[0041] The implementation principle of a bearing cage in an embodiment of the present application is as follows: When a part of the support beam 2 is damaged, rotate the cover ring 4. The positioning pin is squeezed into the installation hole 8, and the second spring 7 is compressed, thereby changing the relative position between the cover ring 4 and the base ring 3, opening the cover ring 4, exposing the clamping groove 10 and the hook 11, and then pulling the support beam 2. Since there is a gap between the support beam 2 and the base ring 3, the length of the support beam 2 can be changed, and the first spring 17 is stretched. During this process, the plug block 15 is separated from the plug sleeve, and the iron block 18 is separated from the magnet block 19. The support beam 2 can be deformed. The clamping sleeve 20 is removed from the hook 11, and then the support beam 2 is removed, completing the disassembly of the support beam 2.

[0042] Then replace the support beam 2 with a new one. When installing the support beam 2, pull the first support beam 12 and the second support beam 13, and the first spring 17 is stretched, changing the overall length of the support beam 2 and separating the plug block 15 from the plug slot 16 so that the support beam 2 can be deformed for smooth installation. The clamping sleeve 20 is inserted into the clamping groove 10 and hooked on the hook 11, thus completing the clamping between the support beam 2 and the base ring 3. And when the clamping sleeve 20 is clamped on the hook 11, the first spring 17 returns from the stretched state to the natural state. At this time, the length of the support beam 2 returns to the initial position, the plug block 15 is re-inserted into the plug slot 16, there is a gap between the support beam 2 and the base ring 3, and the iron block 18 is adsorbed by the magnet block 19, completing the replacement of the support beam 2. There is no need to replace the entire bearing cage, reducing the use cost.

[0043] And during the replacement process of the support beam 2, since the cover ring 4 is opened, the user can directly see whether the clamping sleeve 20 is clamped on the hook 11, which brings convenience to the replacement of the support beam 2.

Claims

1. A bearing cage, comprising a cage body, the cage body including end rings (1) and support beams (2), and there are two end rings (1), characterized in that: The support beam (2) is a telescopic beam. Both ends of the support beam (2) are detachably clamped on the end ring (1). The support beam (2) includes a first support beam (12), a second support beam (13) and an intermediate block (14). There is a sliding fit between the first support beam (12) and the intermediate block (14), and there is a sliding fit between the second support beam (13) and the intermediate block (14). A first spring (17) is connected between the first support beam (12) and the intermediate block (14), and a first spring (17) is connected between the second support beam (13) and the intermediate block (14). The end ring (1) is provided with a clamping groove (10) and a hook (11). The hook (11) is arranged on the end ring (1) and is located in the clamping groove (10). A clamping sleeve (20) is connected to one end of the first support beam (12) far from the intermediate block (14) and one end of the second support beam (13) far from the intermediate block (14). The clamping sleeve (20) is clamped on the hook (11) through the clamping groove (10). When the clamping sleeve (20) is clamped on the hook (11), there is a gap between the first support beam (12) and the end ring (1), and between the second support beam (13) and the end ring (1).

2. The bearing cage according to claim 1, wherein: Plug-in blocks (15) are connected to both sides of the intermediate block (14). Plug-in grooves (16) are provided on both the first support beam (12) and the second support beam (13). The plug-in blocks (15) are movably inserted into the plug-in grooves (16). The first spring (17) is located in the plug-in groove (16). When the first spring (17) is in a natural state, the first support beam (12) abuts against the intermediate block (14), and the second support beam (13) abuts against the intermediate block (14).

3. The bearing cage according to claim 2, characterized in that: Magnet blocks (19) are provided in the plug-in grooves (16), and iron blocks (18) are provided on the intermediate block (14). The iron blocks (18) are adsorbed by the magnet blocks (19).

4. The cage according to claim 1, characterized in that: The end ring (1) includes a base ring (3) and a cover ring (4). The cover ring (4) and the base ring (3) are connected by a connecting member capable of changing the relative position between the cover ring (4) and the base ring (3). The clamping groove (10) is opened on the base ring (3), and the hook (11) is connected to the base ring (3). One end of the clamping groove (10) far from the support beam (2) communicates with one side of the base ring (3) close to the cover ring (4).

5. The cage according to claim 4, characterized in that: The connecting member includes a hinge pin (5), a positioning pin (6) and a second spring (7). The cover ring (4) is hinged to the base ring (3) through the hinge pin (5). An installation hole (8) is provided on the base ring (3). One end of the second spring (7) is connected to the bottom of the installation hole (8), and the other end is connected to the positioning pin (6). One end of the positioning pin (6) far from the second spring (7) is hemispherical. When one end of the positioning pin (6) far from the second spring (7) is located in the clamping hole (9), the center line of the cover ring (4) coincides with the center line of the base ring (3).

6. The cage according to claim 1, characterized in that: Arc-shaped grooves (21) matching the side wall contour of the rolling body are provided on two opposite side walls of the support beam (2).

7. The cage according to claim 6, characterized in that: An oil storage hole (22) and an oil discharge hole (23) are provided on the side wall of the arc-shaped groove (21). Both the oil storage hole (22) and the oil discharge hole (23) are frustum-shaped. The end with a smaller inner diameter of the oil storage hole (22) is oppositely arranged and communicated with the end with a smaller inner diameter of the oil discharge hole (23), and the end with a larger inner diameter of the oil discharge hole (23) is communicated with the side wall of the arc-shaped groove (21).

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