A lubricated deep groove ball bearing

Abstract

The application provides a lubricated deep groove ball bearing, which comprises an outer ring and an inner ring, the outer ring and the inner ring are sleeved with each other, a retainer is arranged between the outer ring and the inner ring, a plurality of balls are movably arranged on the retainer, a rubber sealing ring is arranged between the outer ring and the inner ring, an annular oil pocket inner cavity is formed in the outer ring, a soft oil storage bag is arranged in the oil pocket inner cavity, a plurality of oil storage inner cavities are formed in the outer ring and are in communication with the oil pocket inner cavity, an oil storage cylinder is installed in the oil storage inner cavity, an oil inlet hole is formed in one end of the oil storage cylinder, and the oil inlet hole is in communication with the oil pocket inner cavity; the application is characterized in that a push rod is arranged along the outer ring, the push rod is continuously pushed by interval abutting blocks, automatic addition of internal lubricating oil is realized, lubrication work can be completed without disassembling the rubber sealing ring, and the problem of sealing performance decline caused by frequent disassembly of a sealing structure of a traditional bearing is effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of bearings, specifically a lubricated deep groove ball bearing. Background Technology

[0002] Lubrication of deep groove ball bearings is mainly achieved through the lubricating grease between the inner and outer rings. Most existing deep groove ball bearings have sealing rings on both ends of the inner and outer rings, which effectively reduces the loss of lubricating grease. However, after the bearing has been running for a period of time, lubricating grease will accumulate at both ends of the inner and outer rings of the bearing. In this case, although there is lubricating grease between the inner and outer rings of the bearing, there is not much lubricating grease on the ball raceway, so the bearing cannot be properly lubricated. Moreover, for deep groove ball bearings with seals installed, after the internal lubricating oil is consumed, the seal strip needs to be removed before lubricating oil can be added.

[0003] In summary, the present invention provides a lubricated deep groove ball bearing to solve the above-mentioned problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a lubricated deep groove ball bearing, which solves the problem in the prior art where, after the internal lubricating oil in a deep groove ball bearing with a sealing ring installed is consumed, the sealing strip needs to be removed before lubricating oil can be added.

[0005] A lubricated deep groove ball bearing includes an outer ring and an inner ring, which are sleeved together. A cage is provided between the outer and inner rings, and multiple balls are movably mounted on the cage. A sealing ring is provided between the outer and inner rings. An annular oil bladder cavity is formed inside the outer ring, and a soft oil reservoir is provided inside the oil bladder cavity. Multiple oil storage cavities are formed inside the outer ring and communicate with the oil bladder cavity. An oil storage cylinder is installed in each oil storage cavity, and an oil inlet hole is formed at one end of the oil storage cylinder, which communicates with the oil bladder cavity. The surface of the oil inlet hole... An inlet stopper ball is provided on the surface. A piston plate is provided inside the oil storage tank. A push rod is fixedly connected to one end of the piston plate. One end of the push rod movably penetrates through the oil storage tank. The end of the push rod penetrating through the oil storage tank also penetrates through the inner wall of the outer ring. An oil outlet channel one and an oil outlet channel two are opened inside the outer ring. The oil outlet channel two communicates with the inside of the oil storage tank. One end of the oil outlet channel one penetrates through the inner wall of the outer ring. One end of the oil outlet channel one and one end of the oil outlet channel two are connected. An outlet stopper ball is provided at the opening of one end of the oil outlet channel one. Multiple spacer blocks are installed on the outside of the retainer.

[0006] Furthermore, the soft oil reservoir has an annular hollow structure, and an inlet oil pipe is installed on the surface of the soft oil reservoir. One end of the inlet oil pipe passes through the outer ring and is arranged along the axial direction of the outer ring. The soft oil reservoir is also equipped with multiple oil outlets, which pass through the inlet hole and are connected to the inside of the oil storage cylinder.

[0007] Furthermore, one end of the first oil outlet channel penetrates the inner wall of the outer ring, and the other end is connected to the second oil outlet channel. The first oil outlet channel and the second oil outlet channel are arranged perpendicular to each other. The outlet plug is located at the opening of the first oil outlet channel that does not penetrate the outer ring. The outlet plug is connected to the end of the second oil outlet channel away from the oil storage tank by a plug spring.

[0008] Furthermore, the oil storage cylinder has two oil outlet holes at one end near the oil inlet, and each oil outlet hole is respectively configured to correspond one-to-one with the second oil outlet channel, and each oil outlet hole is connected to one end of the second oil outlet channel.

[0009] Furthermore, a retaining frame is installed inside the oil storage tank. The surface of the retaining frame is fixed to the inner wall of the oil storage tank by symmetrical mounting blocks. The inlet plug covers the surface of the oil inlet hole and is connected to the retaining frame by a plug spring.

[0010] Furthermore, an elastic pressure plate is installed on the surface of the push rod, and the elastic pressure plate is movably disposed in the oil storage cavity. The elastic pressure plate is connected to one side of the inner wall of the oil storage cavity by a compression spring.

[0011] Furthermore, multiple rubber sleeves are installed on the inner wall of the outer ring, and the rubber sleeves cover the end of the push rod that penetrates the inner wall of the outer ring.

[0012] Furthermore, the spacer blocks are arranged in a circular array along the outer wall of the retainer, and each spacer block corresponds to a push rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses push rods set along the outer ring and the continuous force of the push rods by the spaced blocks to automatically add internal lubricating oil. Lubrication can be completed without disassembling the sealing ring, effectively avoiding the problem of reduced sealing performance caused by frequent disassembly of the sealing structure in traditional bearings.

[0014] 2. This invention uses spaced blocks to periodically press the push rod, and utilizes the one-way limiting function of the internal inlet and outlet plugs to prevent lubricating oil from flowing back into the oil storage tank. The lubricating oil can only be discharged through the oil outlet channel, which also prevents lubricating oil containing impurities from flowing back into the oil storage tank after use. This effectively ensures the purity of the lubricating oil and avoids impurities causing wear to the precision components inside the bearing.

[0015] 3. This invention, by setting an inlet oil pipe on the soft oil reservoir, allows for direct replenishment of lubricating oil to the interior. This is convenient to operate and does not affect the normal operation of the bearing. It solves the problem of the need for complete disassembly when adding lubricating oil to traditional bearings, greatly improving maintenance efficiency. The rubber sleeve not only seals the part of the push rod that penetrates the inner wall of the outer ring to prevent lubricating oil leakage, but also reduces the friction between the push rod and the outer ring during push rod movement, ensuring the smoothness and stability of the push rod's movement. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is a three-dimensional view of the oil outlet channel of the present invention; Figure 4 This is a three-dimensional view of the inner cavity of the oil bladder of the present invention; Figure 5 This is a diagram showing the oil inlet state of the oil storage tank of the present invention; Figure 6 This is a diagram showing the oil outlet state of the oil storage tank of the present invention; Figure 7 This is a three-dimensional view of the inside of the oil storage tank of the present invention.

[0017] In the picture: 1. Outer ring; 2. Cage; 3. Spacer block; 4. Inner ring; 5. Rubber sealing ring; 6. Soft oil reservoir; 7. Oil sump cavity; 8. Oil sump cavity; 9. Oil outlet channel one; 10. Oil outlet channel two; 11. Rubber sleeve; 12. Oil reservoir; 13. Outlet plug; 14. Compression spring; 15. Inlet plug; 16. Oil inlet; 17. Oil outlet; 18. Plug spring one; 19. Piston plate; 20. Retaining bracket; 21. Plug spring two; 22. Push rod; 23. Elastic pressure plate; 24. Inlet oil pipe. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] like Figures 1-7As shown, the present invention provides a lubricated deep groove ball bearing, including an outer ring 1 and an inner ring 4, which are sleeved together. A cage 2 is provided between the outer ring 1 and the inner ring 4, and multiple balls are movably disposed on the cage 2. A sealing ring 5 is provided between the outer ring 1 and the inner ring 4. An annular oil bladder cavity 8 is formed inside the outer ring 1, and a soft oil reservoir 6 is provided inside the oil bladder cavity 8. Multiple oil storage cavities 7 are formed inside the outer ring 1 and communicate with the oil bladder cavity 8. An oil storage cylinder 12 is installed in the oil storage cavity 7, and an oil inlet hole 16 is formed at one end of the oil storage cylinder 12. The oil inlet hole 16 communicates with the oil bladder cavity 8. The surface of the oil inlet hole 16 is... An inlet stopper ball 15 is provided, and a piston plate 19 is provided inside the oil storage tank 12. One end of the piston plate 19 is fixedly connected to a push rod 22. One end of the push rod 22 movably passes through the oil storage tank 12. The end of the push rod 22 that passes through the oil storage tank 12 also passes through the inner wall of the outer ring 1. An oil outlet channel 1 9 and an oil outlet channel 2 10 are provided inside the outer ring 1. The oil outlet channel 2 10 is connected to the inside of the oil storage tank 12. One end of the oil outlet channel 1 9 passes through the inner wall of the outer ring 1. The oil outlet channel 1 9 and the oil outlet channel 2 10 are connected. An outlet stopper ball 13 is provided at the opening of one end of the oil outlet channel 1 9. Multiple spacer blocks 3 are installed on the outside of the retainer 2.

[0020] As one embodiment of the present invention, the soft oil reservoir 6 has an annular hollow structure. An inlet oil pipe 24 is installed on the surface of the soft oil reservoir 6. One end of the inlet oil pipe 24 passes through the outer ring 1 and is arranged along the axial direction of the outer ring 1. The soft oil reservoir 6 is also equipped with a plurality of oil outlets, which pass through the inlet hole 16 and are connected to the inside of the oil storage cylinder 12.

[0021] like Figure 3 Deep groove ball bearings are mainly used to reduce friction during mechanical operation and to bear radial loads. The inlet oil pipe 24 is also set along the radial direction of the outer ring 1. Therefore, the outlet of the inlet oil pipe 24 is located on the outer shell of the outer ring 1, which does not affect the installation of the annular outer wall of the outer ring 1. At the same time, oil can be stored in the soft oil reservoir 6 through the inlet oil pipe 24. The amount of lubricating oil in the soft oil reservoir 6 can be judged by the depth of the inlet oil pipe 24. The soft oil reservoir 6 is a TPU soft oil reservoir, which is mainly made of polyurethane and nylon. Nylon serves as the load-bearing skeleton, and polyurethane covers the surface of the nylon material to be responsible for the sealing structure. When oil is discharged, the soft oil reservoir 6 will gradually contract, and the lubricating oil in the soft oil reservoir 6 can be transported to the oil storage cylinder 12 through the oil outlet.

[0022] In one embodiment of the present invention, one end of the oil outlet channel 19 penetrates the inner wall of the outer ring 1, and the other end is connected to the oil outlet channel 2 10. The oil outlet channel 19 and the oil outlet channel 2 10 are arranged perpendicular to each other. The outlet plug ball 13 is located at the opening of the end of the oil outlet channel 19 that does not penetrate the outer ring 1. The outlet plug ball 13 is connected to the end of the oil outlet channel 2 10 away from the oil storage cylinder 12 by a plug ball spring 18.

[0023] like Figure 3 The outlet ball 13 blocks the opening of the oil outlet channel 9, sealing the lubricating oil inside the oil outlet channel 10. As the piston plate 19 compresses the oil into the oil accumulator 12, the lubricating oil is squeezed out of the oil outlet channel 10. Then, the ball spring 18 is squeezed, and the outlet ball 13 moves away from the opening of the oil outlet channel 9, sliding to one end of the oil outlet channel 10. The lubricating oil enters the oil outlet channel 9, and through the reciprocating motion of the piston plate 19, the lubricating oil is slowly discharged to lubricate the balls in the deep groove ball bearing.

[0024] In one embodiment of the present invention, the oil storage cylinder 12 has two oil outlet holes 17 at one end near the oil inlet hole 16. The oil outlet holes 17 are respectively arranged in a one-to-one correspondence with the second oil outlet channel 10, and the oil outlet holes 17 are respectively connected to one end of the second oil outlet channel 10.

[0025] like Figures 5-7 The oil reservoir 12 is equipped with an oil outlet 17 and an oil inlet 16, which are responsible for oil inlet and oil outlet respectively. The lubricating oil enters the interior through the oil inlet 16 and then exits through the oil outlet 17.

[0026] In one embodiment of the present invention, a retaining frame 20 is installed inside the oil storage tank 12. The surface of the retaining frame 20 is fixed to the inner wall of the oil storage tank 12 by symmetrical mounting blocks. The inlet plug ball 15 covers the surface of the oil inlet hole 16 and is connected to the retaining frame 20 by a plug ball spring 21.

[0027] like Figures 6-7 The second ball-blocking spring 21 elastically presses against the oil inlet hole 16, restricting the flow direction of lubricating oil in the oil inlet hole 16. Only the lubricating oil in the soft oil reservoir 6 is allowed to flow into the oil storage cylinder 12 through the oil inlet hole 16. When the piston plate 19 in the oil storage cylinder 12 moves away from the oil inlet hole 16, the outlet ball-blocking ball 13 blocks the opening of the oil outlet channel 9. Under this pressure, the inlet ball-blocking ball 15 opens the oil inlet hole 16, squeezes the second ball-blocking spring 21, and the lubricating oil in the soft oil reservoir 6 enters the oil storage cylinder 12.

[0028] In one embodiment of the present invention, an elastic pressure plate 23 is mounted on the surface of the push rod 22. The elastic pressure plate 23 is movably disposed in the oil storage cavity 7. The elastic pressure plate 23 is connected to one side of the inner wall of the oil storage cavity 7 by a compression spring 14.

[0029] One end of the push rod 22 passes through the outer ring 1 and extends out of the outer ring 1. The elastic pressure plate 23 is pushed by the compression spring 14, which pushes the push rod 22 out of the outer ring 1. Thus, when the piston plate 19 is squeezed inward by the push rod 22, it can return to its original position under the action of the compression spring 14. The piston plate 19 can move back and forth in the oil reservoir 12.

[0030] In one embodiment of the present invention, a plurality of rubber sleeves 11 are installed on the inner wall of the outer ring 1, and the rubber sleeves 11 cover one end of the push rod 22 that passes through the inner wall of the outer ring 1.

[0031] In one embodiment of the present invention, the spacer blocks 3 are arranged in a ring array along the outer wall of the retainer 2, and the spacer blocks 3 are arranged in a one-to-one correspondence with the push rods 22.

[0032] When the bearing rotates, the cage 2 also rotates simultaneously. When the cage 2 rotates, the spacer block 3 presses the extended part of the push rod 22, and then the push rod 22 is pressed inward. The piston plate 19 presses the lubricating oil in the oil accumulator 12. Then, under the action of the compression spring 14, the elastic pressure plate 23 pushes the push rod 22 to extend out of the inner side of the outer ring 1. This process is repeated to lubricate the surface. The rubber sleeve 11 wraps around the surface of the push rod 22, and the surface of the push rod 22 is shielded to prevent the lubricating oil in the bearing from entering the oil accumulator cavity 7.

[0033] When the bearing operates, the cage 2 drives the spacer block 3 to rotate synchronously. The spacer block 3 periodically presses the push rod 22, pushing the piston plate 19 to reciprocate within the oil reservoir 12. When the piston plate 19 moves backward, the inlet ball valve 15 opens under negative pressure, as... Figure 5 The lubricating oil in the soft oil reservoir 6 enters the oil storage cylinder 12 through the oil outlet and oil inlet 16; when the piston plate 19 moves forward, the inlet plug ball 15 closes, and the oil pressure pushes the outlet plug ball 13 to compress the plug ball spring 18. The lubricating oil is then precisely injected into the contact area between the ball and the slideway through the oil outlet 17, the second oil outlet channel 10, and the first oil outlet channel 9. Figure 6 Simultaneously, the compression spring 14 drives the elastic pressure plate 23 to reset, ensuring that the push rod 22 continuously responds to the squeezing action of the interval block 3, forming an automatic oil replenishment cycle. The annular soft oil reservoir 6, in conjunction with the axial inlet oil pipe 24, can replenish lubricating oil at any time through external oiling equipment. The rubber sleeve 11 effectively prevents lubricating oil from leaking along the push rod penetration, significantly extending the bearing maintenance cycle and service life. One end of the oil outlet channel 9 is aligned with the movement trajectory of the ball, allowing the lubricating oil to directly cover the surface of the ball and lubricate the bearing. The annular soft oil reservoir 6 can replenish lubricating oil through the imported oil pipe 24 without disassembling the rubber seal ring. Combined with the intermittent oil supply design of multiple oil accumulators 12, it can not only prevent lubricating oil from accumulating at both ends of the bearing and ensure that the ball slide is continuously lubricated, but also solve the problem that traditional bearings require the removal of seals to replenish oil, effectively extending the service life of the bearing and reducing the difficulty of maintenance.

[0034] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A lubricated deep groove ball bearing, comprising an outer ring (1) and an inner ring (4), wherein the outer ring (1) and the inner ring (4) are sleeved together, a cage (2) is provided between the outer ring (1) and the inner ring (4), a plurality of balls are movably disposed on the cage (2), and a sealing ring (5) is provided between the outer ring (1) and the inner ring (4), characterized in that, An annular oil bladder cavity (8) is formed inside the outer ring (1). A soft oil storage bladder (6) is provided inside the oil bladder cavity (8). Multiple oil storage cavities (7) are formed inside the outer ring (1) and communicate with the oil bladder cavity (8). An oil storage cylinder (12) is installed inside the oil storage cavity (7). An oil inlet hole (16) is formed at one end of the oil storage cylinder (12). The oil inlet hole (16) communicates with the oil bladder cavity (8). An inlet plug ball (15) is provided on the surface of the oil inlet hole (16). A piston plate (19) is provided inside the oil storage cylinder (12). A push rod (22) is fixedly connected to one end of the piston plate (19). One end of the push rod (22) movably penetrates the oil storage cylinder (12). The end of the push rod (22) penetrating the oil storage cylinder (12) also penetrates the inner wall of the outer ring (1). An oil outlet channel one (9) and an oil outlet channel two (10) are provided in the outer ring (1). The oil outlet channel two (10) is connected to the oil storage cylinder (12). One end of the oil outlet channel one (9) penetrates the inner wall of the outer ring (1). The oil outlet channel one (9) is connected to one end of the oil outlet channel two (10). An outlet plug ball (13) is provided at the opening of one end of the oil outlet channel one (9). Multiple spacer blocks (3) are installed on the outside of the retainer (2).

2. The lubricated deep groove ball bearing as described in claim 1, characterized in that, The soft oil reservoir (6) has an annular hollow structure. An inlet oil pipe (24) is installed on the surface of the soft oil reservoir (6). One end of the inlet oil pipe (24) passes through the outer ring (1) and is arranged along the axial direction of the outer ring (1). The soft oil reservoir (6) is also equipped with multiple oil outlets. The oil outlets pass through the inlet hole (16) and are connected to the inside of the oil storage cylinder (12).

3. The lubricated deep groove ball bearing as described in claim 1, characterized in that, One end of the oil outlet channel one (9) penetrates the inner wall of the outer ring (1), and the other end is connected to the oil outlet channel two (10). The oil outlet channel one (9) and the oil outlet channel two (10) are arranged perpendicular to each other. The outlet plug (13) is located at the opening of the oil outlet channel one (9) that does not penetrate the outer ring (1). The outlet plug (13) is connected to the end of the oil outlet channel two (10) away from the oil storage cylinder (12) by a plug spring one (18).

4. The lubricated deep groove ball bearing as described in claim 1, characterized in that, The oil storage cylinder (12) has two oil outlet holes (17) at one end near the oil inlet hole (16). The oil outlet holes (17) are respectively set in correspondence with the second oil outlet channel (10), and the oil outlet holes (17) are respectively connected to one end of the second oil outlet channel (10).

5. The lubricated deep groove ball bearing as described in claim 1, characterized in that, The oil storage tank (12) is equipped with a retaining frame (20). The surface of the retaining frame (20) is fixed to the inner wall of the oil storage tank (12) by symmetrical mounting blocks. The inlet plug ball (15) covers the surface of the oil inlet hole (16). The inlet plug ball (15) is connected to the retaining frame (20) by a plug ball spring (21).

6. The lubricated deep groove ball bearing as described in claim 1, characterized in that, The surface of the push rod (22) is fitted with an elastic pressure plate (23), which is movably disposed in the oil storage cavity (7). The elastic pressure plate (23) is connected to one side of the inner wall of the oil storage cavity (7) by a compression spring (14).

7. The lubricated deep groove ball bearing as described in claim 1, characterized in that, Multiple rubber sleeves (11) are installed on the inner wall of the outer ring (1), and the rubber sleeves (11) cover one end of the push rod (22) that passes through the inner wall of the outer ring (1).

8. The lubricated deep groove ball bearing as described in claim 1, characterized in that, The spacer blocks (3) are arranged in a ring array along the outer wall of the retainer (2), and the spacer blocks (3) are arranged in a one-to-one correspondence with the push rods (22).

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