Sealing ring supporting structure and sealing ring

Abstract

The invention discloses a sealing ring supporting structure and a sealing ring, and relates to the technical field of bearing sealing, the sealing ring supporting structure comprises a bearing, the bearing is composed of an inner ring, an outer ring and balls, the outer surface of the outer ring of the bearing is fixedly connected with a plurality of protection blocks, sealing assemblies are arranged on the two sides of the bearing, and each sealing assembly comprises two first sealing rings attached to the two sides of the bearing. A plurality of first sealing rings are arranged in each set in an annular array mode, a second sealing ring is fixedly connected between every two first sealing rings in each set, and an oil injection hole is formed in each first sealing ring. A circular ring formed by combining the first sealing ring and the second sealing ring which are made of different materials is used as the sealing ring, compared with an existing sealing ring which is prone to edge warping due to uneven thermal expansion of the materials at the high temperature, the first sealing ring made of hard rubber is used as a supporting framework, overall deformation is limited, and the sealing performance is improved. The second sealing ring made of soft rubber absorbs extrusion force of thermal expansion towards the adjacent areas through elastic deformation, and edge warping caused by stress generated by local deformation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing seals, and more particularly to a seal support structure and a seal ring. Background Art

[0002] In the joints of industrial robots, a large number of bearings are used for support to reduce the wear of the robotic arm during its rotation. Existing bearings are sealed with seal rings on both sides during application. Traditional seal rings are mostly made of materials such as nitrile rubber and fluororubber, which achieve dust-proof and leakage-proof functions by tightly fitting with the inner and outer rings of the bearing through elastic deformation. Although such designs have advantages such as simple structure and controllable cost, high temperatures are inevitably generated during the long-term operation of industrial robots. Currently, most bearings use high-temperature bearing steel to prevent deformation caused by overheating during long-term operation. Since high temperatures occur during the use of bearings, under high-temperature conditions, the seal rings are prone to local warping due to differences in thermal expansion coefficients, and the continuous friction between the sealing lips and the metal contact surfaces will accelerate material aging. Prolonged friction will cause wear of the seal rings, leading to seal failure. In addition, the degree of integration of existing seal rings and bearings is relatively low, mostly attached to both sides of the bearing, and lubricating oil is coated inside the bearing to reduce wear during the long-term movement of the balls inside the bearing. However, after long-term use, the lubricating oil will decrease due to evaporation or oxidative decomposition at high temperatures, and then it is necessary to manually inject lubricating oil into the bearing again. Conventional lubrication maintenance requires the removal of the seal ring before injecting grease, which not only increases the downtime, but also repeated disassembly and assembly are likely to cause deformation or scratches of the seal ring, resulting in an enlarged dust intrusion channel and affecting the service life of the bearing. For some aging seal rings, it is easy to cause pulling damage during the removal of the seal ring, and then it is necessary to replace the new seal ring, which will increase the cost during bearing maintenance. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a seal support structure and a seal ring.

[0004] The technical solutions are as follows:

[0005] A seal ring includes a bearing, which is composed of an inner ring, an outer ring, and balls. A plurality of protective blocks are fixedly connected to the outer surface of the outer ring of the bearing, and sealing components are arranged on both sides of the bearing;

[0006] The sealing component includes two groups of seal rings one that are attached to both sides of the bearing. Each group of seal rings one is arranged in a circular array with a plurality of them. A seal ring two is fixedly connected between every two seal rings one in each group. An oil injection hole is opened on each seal ring one, a one-way piece is fixedly connected to the inner side wall of each oil injection hole, and a holding block is fixedly connected to the surface of each seal ring one. The holding blocks are arranged in a circular array with a plurality of them.

[0007] Further, the material of the first sealing ring is hard rubber, and the material of the second sealing ring is soft rubber. After the combination of the first sealing ring and the second sealing ring, it forms two annular rings. The inner and outer edges of the combined ring of the first sealing ring and the second sealing ring are both provided with raised skeletons. The outer edge raised skeletons of the first sealing ring and the second sealing ring are in contact with the outer ring surface of the bearing, and the inner edge raised skeletons of the first sealing ring and the second sealing ring are in contact with the inner ring surface of the bearing.

[0008] Further, the one-way piece is composed of four fan-shaped rubber plates. The one-way piece can only be elastically bent towards one side of the holding block. The diameter of the oil injection hole is the same as the size of the existing syringe needle. Each holding block is provided with a hole, and the hole of the holding block is connected to the inside of the oil injection hole. The surface of the holding block away from the first sealing ring is adapted to the shape of the bearing balls.

[0009] A sealing ring support structure, the support structure includes a support assembly arranged outside the bearing. The support assembly includes two support rings arranged on both sides of the bearing. A group of locking rods arranged in a circular array are fixedly connected to the mutually approaching surfaces of the two support rings. Each group of locking rods has a plurality of them. Each locking rod is sleeved with a locking sleeve. A first spring is fixedly connected between each locking sleeve and the corresponding locking rod. The locking sleeves and the locking rods are also provided with two groups, and the two groups of locking sleeves correspond to each other.

[0010] Further, the support assembly further includes two extension plates fixedly connected to one group of locking sleeves. An active rod is slidably connected to each of the two extension plates. A second spring is sleeved on the mutually remote ends of the two active rods. The two ends of the second spring are fixedly connected to the extension plate and the active rod respectively. The mutually approaching ends of the two active rods are fixedly connected with locking blocks. The mutually approaching surfaces of the two locking blocks are both provided with inclined surfaces.

[0011] Further, the support assembly further includes a fixed seat fixedly connected to the other group of locking sleeves. A fixed rod is fixedly connected to the fixed seat. A clamping block is fixedly connected to the end of the fixed rod away from the fixed seat. A release block is sleeved on the outer surface of the fixed rod.

[0012] Further, the surface of the clamping block away from the fixed rod is set as an arc inclined surface. The side edge of the clamping block close to the fixed rod is rounded. The side edge of the release block away from the fixed seat is rounded. The surface of the release block close to the fixed seat is set as an arc inclined surface.

[0013] Further, the support assembly further includes a plurality of support sleeves fixedly connected to the inner side walls of the two support rings. The support sleeves are provided with two groups, and each group of support sleeves is arranged in a circular array with a plurality of them. A support rod is inserted into the inside of each support sleeve. A third spring is fixedly connected between each support rod and the support sleeve.

[0014] Furthermore, a convex block is provided at one end of each support sleeve close to the connection with the support ring. The convex block of the support sleeve abuts against the outer edge protruding skeleton of the first sealing ring, and convex blocks are provided at one ends of the support rods away from the inside of the support sleeve. The convex blocks of the support rods abut against the inner edge protruding skeleton of the first sealing ring.

[0015] As described above, the beneficial effects of a sealing ring support structure and a sealing ring in the present invention are as follows:

[0016] A circular ring formed by combining the first sealing ring and the second sealing ring made of different materials is used as the sealing ring. Compared with the existing sealing ring, it is easy to cause warping due to uneven thermal expansion of the material at high temperature. The first sealing ring made of hard rubber is used as the support skeleton to limit the overall deformation, and the second sealing ring made of soft rubber absorbs the extrusion force of thermal expansion through elastic deformation to adjacent areas, avoiding warping caused by stress generated by local deformation;

[0017] The effect of the existing ball cage can be formed through the holding block. Compared with the existing separately provided ball cage, the integrated design facilitates the rapid installation of the holding block, and the integrated structure is stronger and not easily damaged than the split structure, and the part life is longer;

[0018] The lubricating oil is directly injected into the inside of the bearing from the oil injection hole through a syringe, which reduces the steps of disassembling the sealing ring and then coating the lubricating oil, saving time and effort. For some aging sealing rings, they are easily torn when disassembled. The method of direct injection without disassembly can avoid damage to the sealing ring, reduce the maintenance cost caused by the need to replace a new sealing ring, and also reduce the wear of the bearing operation caused by the broken residue of the sealing ring falling into the inside of the bearing after it is damaged;

[0019] By providing protruding skeletons at the inner and outer edges of the first sealing ring and the second sealing ring, when the inner ring or outer ring of the bearing rotates, it will contact and rub against the protruding skeletons of the first sealing ring and the second sealing ring. Compared with the problem of direct contact and wear between the sealing ring and the bearing, the provision of protruding skeletons that can be rubbed can avoid wear caused by direct contact between the sealing ring and the bearing, thereby extending the service life of the sealing ring;

[0020] The support ring can be quickly installed on both sides of the bearing through the clamping of the locking block and the clamping block, and then in cooperation with the movable locking sleeve, the combined installation of bearings with different thicknesses can be achieved, thereby improving the adaptability of the locking sleeve to bearings with different thicknesses. In addition, the clamping relationship between the clamping block and the locking block can be quickly released through the release block, realizing the quick disassembly step and improving the disassembly efficiency;

[0021] The positioning and installation of the ring formed by the combination of the first sealing ring and the second sealing ring can be achieved through the interaction of the convex blocks on the support sleeve and the support rod. In addition, under the elastic reset action of the first spring, the locking rod drives the support sleeve through the support ring to press the first sealing ring, so that the first sealing ring and the second sealing ring can be closely attached to both sides of the bearing, further improving the sealing effect of the ring formed by the combination of the first sealing ring and the second sealing ring on the bearing. Moreover, the problem of loosening can be avoided by the external support and pressing method, ensuring the stability of the ring formed by the combination of the first sealing ring and the second sealing ring. Brief Description of the Drawings

[0022] Figure 1 Schematic perspective view of the overall components of the present invention;

[0023] Figure 2 Schematic diagram of the support ring, bearing, and retaining block of the present invention;

[0024] Figure 3 Schematic perspective view of the internal structure of the bearing of the present invention;

[0025] Figure 4 Schematic perspective view of components such as the first sealing ring, the second sealing ring, and the retaining block of the present invention;

[0026] Figure 5 Schematic perspective sectional view of the overall components of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged schematic view of the component at A in the present invention;

[0028] Figure 7 For the present invention Figure 5 Enlarged schematic view of the component at B in the present invention;

[0029] Figure 8 Schematic perspective view of components such as the support ring, locking rod, and support rod of the present invention;

[0030] Figure 9 Top view schematic diagram of components such as the locking sleeve, locking block, and clamping block of the present invention;

[0031] Figure 10 Schematic perspective sectional view of components such as the support rod, support sleeve, and third spring of the present invention.

[0032] Among them, the reference numerals in the present invention are:

[0033] 1. Bearing; 11. Protection block;

[0034] Sealing assembly: 21. First sealing ring; 22. Second sealing ring; 23. Oil injection hole; 24. Check valve; 25. Retaining block;

[0035] Support component: 31, support ring; 32, locking rod; 33, locking sleeve; 34, first spring; 35, extension plate; 36, movable rod; 37, second spring; 38, locking block; 39, fixed seat; 310, fixed rod; 311, clamping block; 312, release block; 313, support sleeve; 314, support rod; 315, third spring. Detailed implementation

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] The embodiments provided by the present invention will be elaborated in detail below:

[0038] Embodiment 1:

[0039] As Figure 1 and Figure 3 shown, a sealing ring includes a bearing 1. The bearing 1 is specifically composed of an inner ring, an outer ring, and rolling balls. The bearing 1 is a prior art and will not be elaborated here. A plurality of protective blocks 11 are fixedly connected to the outer surface of the outer ring of the bearing 1. There is a gap between two adjacent protective blocks 11, and the outer surface of each protective block 11 is roughened. Sealing components for sealing the bearing 1 are provided on both sides of the bearing 1;

[0040] It should be noted that the protective blocks 11 are used to protect the outer ring of the bearing 1. If friction occurs during use, only the protective blocks 11 will be affected, and the bearing 1 will not be damaged by friction, reducing the risk of wear of the bearing 1. When the bearing 1 is installed in a hole of a mechanical device, conventionally, the outer ring of the bearing 1 is installed in an interference fit with the installation hole or sleeve of the mechanical device. The roughened protective blocks 11 can increase the friction force with the installation positions such as the installation hole or sleeve of the mechanical device, further improving the installation stability of the bearing 1.

[0041] As Figures 1 to 6 and Figure 10As shown in the figure, the sealing assembly includes two groups of first sealing rings 21 attached to both sides of the bearing 1. Each group of first sealing rings 21 is arranged in an annular array with multiple first sealing rings 21. The material of the first sealing ring 21 is hard rubber. A second sealing ring 22 is fixedly connected between every two first sealing rings 21 in each group. The material of the second sealing ring 22 is soft rubber. After the combination of the first sealing ring 21 and the second sealing ring 22, they form two annular rings. An oil injection hole 23 is opened on each first sealing ring 21. The diameter of the oil injection hole 23 is the same as the size of the existing syringe needle. A one-way piece 24 is fixedly connected to the inner side wall of each oil injection hole 23. A holding block 25 corresponding to the position of the oil injection hole 23 is fixedly connected to the surface of each first sealing ring 21. That is, there are two groups of holding blocks 25, and each group of holding blocks 25 is arranged in an annular array with multiple holding blocks 25. A hole is opened on each holding block 25. The hole of the holding block 25 is communicated with the inside of the oil injection hole 23. The surface of the holding block 25 away from the first sealing ring 21 is adapted to the shape of the rolling balls of the bearing 1, and the holding block 25 can fit with the rolling balls of the bearing 1.

[0042] It should be noted that the one-way piece 24 is composed of four fan-shaped rubber plates, and the direction of elastic deformation of the one-way piece 24 is towards the side close to the holding block 25. That is, the one-way piece 24 can only be elastically bent towards the side of the holding block 25, and the one-way piece 24 cannot be bent towards the side away from the holding block 25, which can achieve a sealing effect and prevent the lubricating oil in the bearing 1 from flowing out through the oil injection hole 23.

[0043] Furthermore, for the ring formed by the combination of the first sealing rings 21 and the second sealing rings 22 with different materials as the sealing ring, compared with the existing sealing ring that is prone to warping due to uneven thermal expansion of the material at high temperature, the first sealing ring 21 made of hard rubber is used as the support skeleton to limit the overall deformation, and the soft rubber second sealing ring 22 absorbs the extrusion force of thermal expansion through elastic deformation towards the adjacent area, avoiding the stress caused by local deformation resulting in warping.

[0044] Among them, the two circular first sealing rings 21 and the second sealing rings 22 are attached to both sides of the bearing 1. During this process, the holding block 25 needs to be corresponding to the rolling balls of the bearing 1. After the two circular first sealing rings 21 and the second sealing rings 22 are attached to both sides of the bearing 1, the first sealing ring 21 can make the holding block 25 fit with the rolling balls of the bearing 1. In addition, after multiple holding blocks 25 in the two groups are corresponding to the rolling balls of the bearing 1, the two groups of holding blocks 25 will wrap the rolling balls. The holding block 25 can achieve the effect of the existing rolling ball cage. Compared with the existing separately provided rolling ball cage, the integrated design can facilitate the rapid installation of the holding block 25, and the integrated structure is stronger than the split one, not easy to be damaged, and the part life is longer.

[0045] In addition, the interior of the existing bearing 1 is coated with lubricating oil. However, after long-term use, the lubricating oil will be reduced due to evaporation at high temperature or oxidative decomposition. Therefore, it is necessary to manually re-inject lubricating oil into the interior of the bearing 1. At this time, the staff can use an existing syringe. The staff inserts the syringe storing the lubricating oil into the oil injection hole 23. After the syringe is inserted into the interior of the oil injection hole 23, it will push the one-way piece 24. At this time, the one-way piece 24 will elastically bend toward the side close to the holding block 25. After pushing the syringe, the lubricating oil will be injected into the interior of the oil injection hole 23. The lubricating oil passes through the holes in the holding block 25 and is injected into the interior of the bearing 1, reducing the steps of disassembling the sealing ring and then coating the lubricating oil, saving time and effort. For some aging sealing rings, they are easily torn when disassembled, and oil leakage is likely to occur after reinstalling the sealing ring;

[0046] After the staff pulls out the syringe from the oil injection hole 23, under the elastic reset action of the one-way piece 24 at this time, the one-way piece 24 returns to the sealed state. At this time, the one-way piece 24 can seal the oil injection hole 23, and thus can seal the lubricating oil injected into the interior of the bearing 1, preventing the lubricating oil from leaking out from the interior of the oil injection hole 23.

[0047] It should be noted that the inner and outer edges of the circular ring formed by the combination of the first sealing ring 21 and the second sealing ring 22 are both provided with raised skeletons. The outer edge raised skeletons of the first sealing ring 21 and the second sealing ring 22 are in contact with the outer ring surface of the bearing 1, and the inner edge raised skeletons of the first sealing ring 21 and the second sealing ring 22 are in contact with the inner ring surface of the bearing 1. When the inner or outer ring of the bearing 1 rotates, it will contact and rub against the raised skeletons of the first sealing ring 21 and the second sealing ring 22. Compared with the problem of direct contact and wear between the sealing ring and the bearing 1, by providing raised skeletons that can be rubbed, it can avoid the wear caused by the direct contact and friction between the sealing ring and the bearing 1, thereby extending the service life of the sealing ring.

[0048] Embodiment 2:

[0049] As Figure 1 、 Figure 2 、 Figure 5 、 Figures 7 to 9 shown, a sealing ring support structure includes a support assembly arranged outside the bearing 1. The support assembly includes two support rings 31 arranged on both sides of the bearing 1. A group of locking rods 32 arranged in a circular array are fixedly connected to the mutually approaching surfaces of the two support rings 31. Each group of locking rods 32 has a plurality of them. A locking sleeve 33 is sleeved on each locking rod 32. A first spring 34 is fixedly connected between each locking sleeve 33 and the corresponding locking rod 32. The locking sleeves 33 and the locking rods 32 are also provided with two groups, and the two groups of locking sleeves 33 correspond to each other.

[0050] As Figures 7 to 9As shown, the support assembly further includes two extension plates 35 fixedly connected to one set of locking sleeves 33. A movable rod 36 is slidably connected to each of the two extension plates 35. A second spring 37 is sleeved on the outer ends of the two movable rods 36 away from each other. The two ends of the second spring 37 are fixedly connected to the extension plate 35 and the movable rod 36 respectively. Locking blocks 38 are fixedly connected to the inner ends of the two movable rods 36 close to each other. The surfaces of the two locking blocks 38 close to each other are both inclined planes.

[0051] As Figure 7 and Figure 9 shown, the support assembly further includes a fixed seat 39 fixedly connected to the other set of locking sleeves 33. A fixed rod 310 is fixedly connected to the fixed seat 39. A clamping block 311 is fixedly connected to the end of the fixed rod 310 away from the fixed seat 39. The surface of the clamping block 311 away from the fixed rod 310 is an arc inclined plane. A release block 312 is sleeved on the outer surface of the fixed rod 310. The surface of the release block 312 close to the fixed seat 39 is an arc inclined plane.

[0052] It should be noted that the edge of the clamping block 311 close to the fixed rod 310 is rounded, and the edge of the release block 312 away from the fixed seat 39 is rounded.

[0053] Among them, when installing the support ring 31 on both sides of the bearing 1, at this time, the staff can pull two corresponding locking sleeves 33 in the two groups, so that the two locking sleeves 33 approach each other on the outer surface of the locking rod 32. The moving locking sleeve 33 will stretch the first spring 34. At this time, one side of the locking sleeve 33 will drive the locking block 38 to move towards the side close to the clamping block 311 through the extension plate 35 by the movable rod 36, and the other side of the locking sleeve 33 will drive the clamping block 311 to move towards the side close to the locking block 38 through the fixed seat 39 by the fixed rod 310. When the inclined plane of the locking block 38 abuts against the arc inclined plane of the clamping block 311, when the two locking sleeves 33 continue to approach, the clamping block 311 will push the locking block 38 and make it move to both sides. After the locking block 38 drives the two sides of the movable rod 36 to move, the second spring 37 will be stretched. When the locking block 38 passes by the clamping block 311, under the elastic reset action of the second spring 37, the movable rod 36 drives the locking block 38 to abut against the outer surface of the fixed rod 310, and the first spring 34 stretched above will make the locking block 38 abut against the surface of the clamping block 311 close to the fixed rod 310, so that the locking block 38 is clamped with the clamping block 311, and at this time, the two locking sleeves 33 are locked with each other.

[0054] The above is only the locking step for two separate corresponding locking sleeves 33. The same operation is performed on each of the other two corresponding locking sleeves 33 according to the above steps, so that all two corresponding locking sleeves 33 are locked.

[0055] It should be noted that when pulling the locking sleeve 33, the locking sleeve 33 needs to be placed between two adjacent protective blocks 11. By locking the support ring 31 with the movable locking sleeve 33, the combined installation of bearings 1 with different thicknesses can be achieved, thereby improving the adaptability of the locking sleeve 33 to bearings 1 with different thicknesses.

[0056] In addition, when it is necessary to disassemble the support ring 31, at this time, the staff can pull two corresponding locking sleeves 33 in two groups again. After the two locking sleeves 33 approach each other, one of the locking sleeves 33 will drive the movable rod 36 to drive the locking block 38 to move towards the side close to the fixed seat 39 through the extension plate 35, and the other locking sleeve 33 will drive the release block 312 on the fixed rod 310 to move towards the side close to the locking block 38 through the fixed seat 39. At this time, the inclined surface of the locking block 38 will abut against the edge of the release block 312. Under the abutting action of the inclined surface of the locking block 38, the support sleeve 313 will be pressed on the surface of the fixed seat 39 close to one end of the fixed rod 310. At this time, the release block 312 will not move on the fixed rod 310. When the two locking sleeves 33 continue to approach, the release block 312 will push the locking block 38 and make it move to both sides. After the locking block 38 drives the two sides of the movable rod 36 to move, the second spring 37 will be stretched. When the locking block 38 passes by the release block 312, under the elastic reset action of the second spring 37, the movable rod 36 will drive the locking block 38 to abut against the arc-shaped inclined surface of the release block 312. At this time, the staff releases the locking sleeve 33, and the locking sleeve 33 drives the locking block 38 to quickly push the release block 312 through the extension plate 35 under the elastic reset action of the first spring 34, so that the release block 312 moves towards the side close to the clamping block 311 on the outer surface of the fixed rod 310. When the release block 312 is in contact with the clamping block 311, the release block 312 can no longer move. At the same time, the locking block 38 will continue to move. At this time, the locking block 38 will move to both sides under the action of the arc-shaped inclined surface of the release block 312. The movement of the locking block 38 will stretch the second spring 37 again through the movable rod 36. After the locking block 38 passes by the release block 312, it will pass by the clamping block 311 again, that is, at this time, the work of releasing the clamping connection between the clamping block 311 and the locking block 38 is completed, achieving the effect of rapid disassembly.

[0057] It should be noted that when the unlocking block 38 is engaged with the fixing rod 310 as described above, the unlocking block 312 will be pushed to one end of the fixing rod 310 close to the locking block 311, that is, the unlocking block 312 will be in a fitting state with the locking block 311. At this time, a concave shape will be formed between the rounded shape on the locking block 311 and the rounded shape on the unlocking block 312. In the above, the inclined surface of the locking block 38 contacts the inclined surface of the locking block 311, and after continuous movement, the locking block 38 will pass by the locking block 311. At this time, the locking block 38 will abut against the concave portion between the locking block 311 and the support sleeve 313. Under the elastic reset action of the second spring 37, the locking block 38 will push the unlocking block 312 to move away from the locking block 311 on the outer surface of the fixing rod 310. At this time, the locking block 38 can also be engaged with the locking block 311.

[0058] Furthermore, it should be noted that when the locking sleeves 33 move closer to each other, since it is manually pulled, the movement of the locking sleeves 33 can be relatively slow. Due to the slow movement, when the locking block 38 moves to the concave portion between the unlocking block 312 and the locking block 311, there is enough time to push the unlocking block 312. However, when the locking sleeves 33 move away from each other, since it moves under the elastic reset action of the first spring 34, the movement of the locking sleeves 33 is relatively rapid. Due to the rapid movement, when the locking block 38 moves to the concave portion between the unlocking block 312 and the locking block 311, the unlocking block 312 will not be pushed because of the relatively fast movement speed.

[0059] As Figure 1 、 Figure 2 、 Figure 8 and Figure 10 shown, the support assembly further includes a plurality of support sleeves 313 fixedly connected to the inner side walls of the two support rings 31. There are two sets of support sleeves 313, and each set of support sleeves 313 is arranged in a circular array with a plurality of them. A convex block is provided at one end of each support sleeve 313 close to the connection with the support ring 31. The convex block of the support sleeve 313 abuts against the outer edge convex skeleton of the first sealing ring 21. A support rod 314 is inserted into the interior of each support sleeve 313. A convex block is provided at one end of the support rod 314 away from the interior of the support sleeve 313. The convex block of the support rod 314 abuts against the inner edge convex skeleton of the first sealing ring 21. A third spring 315 is fixedly connected between each support rod 314 and the support sleeve 313.

[0060] Among them, during the process of the two support rings 31 being clamped and locked by the locking block 38 and the clamping block 311, the locking sleeve 33 will drive the support sleeve 313 to contact the first sealing ring 21. At the same time, the convex block on the support sleeve 313 will abut against the raised skeleton on the outer edge of the first sealing ring 21. Then, the staff member pulls the support rod 314, so that the support rod 314 moves towards the center of the inner ring of the bearing 1 inside the support sleeve 313. The movement of the support rod 314 will stretch the third spring 315. The movement of the support rod 314 will drive the convex block thereon to abut against the raised skeleton on the inner edge of the first sealing ring 21. At this time, through the cooperation of the convex block of the support sleeve 313 and the convex block of the support rod 314, the circular ring formed by the combination of the first sealing ring 21 and the second sealing ring 22 can be positioned and installed. In addition, because the two locking sleeves 33 are clamped and locked by the locking block 38 and the clamping block 311, and at the same time, with the elastic reset function of the first spring 34, the locking rod 32 drives the support sleeve 313 through the support ring 31 to press the first sealing ring 21, so that the first sealing ring 21 and the second sealing ring 22 can be closely attached to both sides of the bearing 1, further improving the sealing effect of the circular ring formed by the combination of the first sealing ring 21 and the second sealing ring 22 on the bearing 1, and the problem of loosening can also be avoided by the external support and pressing method, ensuring the stability of the circular ring formed by the combination of the first sealing ring 21 and the second sealing ring 22.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing ring, comprising a bearing (1), the bearing (1) consisting of an inner ring, an outer ring and rolling balls, characterized in that, A plurality of protective blocks (11) are fixedly connected to the outer surface of the outer ring of the bearing (1), and sealing components are arranged on both sides of the bearing (1). The sealing component includes two groups of first sealing rings (21) attached to both sides of the bearing (1). Each group of first sealing rings (21) is arranged in a circular array with a plurality of them. A second sealing ring (22) is fixedly connected between every two first sealing rings (21) in each group. An oil injection hole (23) is formed in each first sealing ring (21). A one-way piece (24) is fixedly connected to the inner side wall of each oil injection hole (23). A holding block (25) is fixedly connected to the surface of each first sealing ring (21). A plurality of holding blocks (25) are arranged in a circular array.

2. The sealing ring according to claim 1, wherein The first sealing ring (21) is made of hard rubber, and the second sealing ring (22) is made of soft rubber. After the first sealing ring (21) and the second sealing ring (22) are combined, they form two annular rings. Raised skeletons are arranged on both the inner edge and the outer edge of the combined ring of the first sealing ring (21) and the second sealing ring (22). The outer edge raised skeleton of the first sealing ring (21) and the second sealing ring (22) is in contact with the outer ring surface of the bearing (1), and the inner edge raised skeleton of the first sealing ring (21) and the second sealing ring (22) is in contact with the inner ring surface of the bearing (1).

3. The sealing ring according to claim 1, wherein The one-way piece (24) is composed of four fan-shaped rubber plates. The one-way piece (24) can only elastically bend towards one side of the holding block (25). The diameter of the oil injection hole (23) is the same as the size of the existing syringe needle. A hole is formed in each holding block (25). The hole in the holding block (25) is connected to the inside of the oil injection hole (23). The surface of the holding block (25) away from the first sealing ring (21) is adapted to the shape of the rolling balls of the bearing (1).

4. A sealing ring support structure, characterized in that, Applying the sealing ring as described in claims 1-3, the support structure includes a support component arranged outside the bearing (1). The support component includes two support rings (31) arranged on both sides of the bearing (1). A group of locking rods (32) arranged in a circular array are fixedly connected to the mutually approaching surfaces of the two support rings (31). Each group of locking rods (32) has a plurality of them. A locking sleeve (33) is sleeved on each locking rod (32). A first spring (34) is fixedly connected between each locking sleeve (33) and the corresponding locking rod (32). The locking sleeves (33) and the locking rods (32) are also provided in two groups, and the two groups of locking sleeves (33) correspond to each other.

5. The seal ring support structure according to claim 4, wherein, The support component further includes two extension plates (35) fixedly connected to one group of locking sleeves (33). An active rod (36) is slidably connected to each of the two extension plates (35). A second spring (37) is sleeved on the mutually remote ends of the two active rods (36). The two ends of the second spring (37) are respectively fixedly connected to the extension plate (35) and the active rod (36). Locking blocks (38) are fixedly connected to the mutually approaching ends of the two active rods (36). The mutually approaching surfaces of the two locking blocks (38) are both arranged as inclined surfaces.

6. The seal ring support structure according to claim 4, characterized in that, The support assembly further includes a fixed seat (39) fixedly connected to another set of locking sleeves (33). A fixed rod (310) is fixedly connected to the fixed seat (39). A clamping block (311) is fixedly connected to the end of the fixed rod (310) away from the fixed seat (39). A release block (312) is sleeved on the outer surface of the fixed rod (310).

7. The sealing ring support structure according to claim 6, characterized in that, One side of the clamping block (311) away from the fixed rod (310) is set as an arc inclined surface. The side edge of the clamping block (311) close to the fixed rod (310) is rounded. The side edge of the release block (312) away from the fixed seat (39) is rounded. One side of the release block (312) close to the fixed seat (39) is set as an arc inclined surface.

8. The seal ring support structure according to claim 4, wherein, The support assembly further includes a plurality of support sleeves (313) fixedly connected to the inner side walls of two support rings (31). There are two groups of support sleeves (313), and each group of support sleeves (313) is arranged in a circular array with a plurality of them. A support rod (314) is inserted into the interior of each support sleeve (313). A third spring (315) is fixedly connected between each support rod (314) and the support sleeve (313).

9. The sealing ring support structure according to claim 8, wherein, Each support sleeve (313) is provided with a convex block near the end connected to the support ring (31). The convex block of the support sleeve (313) abuts against the outer edge protruding skeleton of the first sealing ring (21). Each support rod (314) is provided with a convex block at the end away from the interior of the support sleeve (313). The convex block of the support rod (314) abuts against the inner edge protruding skeleton of the first sealing ring (21).

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