Bush structure and bush mounting device
By using the method of lubricating lubricating powder in the band structure, the problem of poor temperature resistance of existing bands in high and low temperature environment is solved, and efficient lubrication and stable rotation are achieved, and the service life is extended.
Patent Information
- Application Number
- CN202421351858.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-06-13
AI Technical Summary
Existing bushings show poor temperature resistance in high and low temperature environments, and the rubber material has aging, expanded or lost elasticity, resulting in reduced sealing and shortened service life.
The band structure includes the lining kit and lubricating blocks. The band parts are equipped with a hole and a capacity groove. The lubricating block is installed in the capacity groove. Turn the connection position.
The 0 damping rotation in extreme high and low temperature environment is achieved, which improves the smoothness and stability of rotation, extend the service life of the band structure, and does not require rubber band or lubricating oil.
Smart Images
Figure CN222391780U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bushings, and particularly relates to a bushing structure and a bushing installation device. Background Art
[0002] At present, bushings are usually integrated structures of metal and rubber. The disadvantage of the above bushing structure is that due to the poor high and low temperature resistance of rubber materials, the rubber materials in the bushings will accelerate aging or decomposition in high temperature environments, and even the rubber materials will absorb liquids or gases and expand, causing the bearing size to change, thereby reducing the sealing between the bearing and external components. In low temperature environments, rubber materials will show low-temperature brittleness, the molecular structure will become rigid, and lose elasticity and flexibility. Utility Model Content
[0003] The utility model aims at the technical problems in the prior art such as poor high and low temperature resistance of bushings, and proposes a bushing structure and a bushing installation device.
[0004] To solve the above problems, an embodiment of the utility model provides a bushing structure, including a bushing kit and at least one lubricating block, the bushing kit is provided with a first through hole, the bushing kit is provided with at least one accommodating groove connected to the first through hole, the lubricating block is installed in the accommodating groove, and the lubricating block is used to lubricate the rotating connection position between the bushing kit and the part to be lubricated rotatably installed in the first through hole.
[0005] Optionally, the lubricating block includes a block body and a graphene layer wrapped around the block body.
[0006] Optionally, the bushing member includes a bushing sleeve and a flange body coaxially arranged at the end of the bushing sleeve, and the first through hole and the accommodating groove are both arranged on the bushing sleeve.
[0007] Another embodiment of the utility model further provides a bushing installation device, comprising a rotating shaft and the above-mentioned bushing structure, wherein the rotating shaft is rotatably installed in the first through hole, and the lubricating block abuts against the rotating shaft.
[0008] Optionally, the bushing installation device further comprises a sealing ring and a rotating disk, the rotating disk is rotatably sleeved on the rotating shaft, and the sealing ring is sealingly connected between the rotating disk and the bushing assembly.
[0009] Optionally, a first sealing groove is provided on a target end face of the sealing ring; the target end face refers to an end of the sealing ring away from the bushing member and / or an end of the sealing ring away from the turntable.
[0010] Optionally, the sealing ring includes a first ring body and a second ring body, the first ring body is mounted on the bushing member, and the second ring body is mounted on the rotating disk; an end of the first ring body away from the bushing member abuts against an end of the second ring body away from the rotating disk;
[0011] A second sealing groove is provided on the end surface of the first ring body facing away from the liner assembly, and a third sealing groove is provided on the end surface of the first ring body facing away from the rotating disk.
[0012] Optionally, the sealing ring is sealingly sleeved on the rotating shaft, and a plurality of cavities distributed at intervals are provided on the inner wall where the sealing ring and the rotating shaft are in contact.
[0013] Optionally, the bushing installation device further comprises an annular limiting plate arranged at the end of the rotating shaft, the annular limiting plate being coaxially arranged with the rotating shaft, and the annular limiting plate abuts against the end surface of the rotating disk away from the sealing ring.
[0014] Optionally, the bushing installation device comprises two sealing rings and two rotating disks; the two sealing rings are respectively arranged at opposite ends of the bushing member; the two rotating disks are respectively arranged at one side of the two sealing rings away from the bushing member;
[0015] The bushing installation device also includes an outer sleeve sleeved on the bushing member, and two ends of the outer sleeve are respectively in contact with the two sealing rings.
[0016] In the utility model, a first through hole is provided on the lining sleeve, and at least one receiving groove connected to the first through hole is provided on the lining sleeve, and a lubricating block is installed in the receiving groove; the part to be lubricated is installed and rotatably installed in the first through hole, and the lubricating block abuts against the part to be lubricated. During the rotation of the part to be lubricated, the part to be lubricated and the lubricating block rotate and rub, and the lubricating block precipitates lubricating powder, and the lubricating powder can play a role in lubricating the rotating connection position between the part to be lubricated and the lining sleeve, thereby improving the smoothness and stability of the rotation between the part to be lubricated and the lining sleeve. In addition, the bushing structure does not need to be provided with a rubber bushing, and can achieve zero damping rotation through the lubricating effect of the lubricating powder precipitated on the lubricating block. In this way, the high and low temperature resistance of the bushing structure is guaranteed, and the service life of the bushing structure is extended. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 A structural schematic diagram of a bushing assembly of a bushing structure provided in one embodiment of the utility model;
[0019] Figure 2 A cross-sectional view of a bushing installation device provided in one embodiment of the utility model;
[0020] Figure 3 A schematic diagram of the structure of a sealing ring of a bushing installation device provided in one embodiment of the utility model;
[0021] Figure 4 A cross-sectional view of a bushing installation device provided in one embodiment of the utility model;
[0022] Figure 5 A cross-sectional view of a bushing installation device provided in one embodiment of the utility model;
[0023] Figure 6 A partial cross-sectional view of a bushing installation device provided in one embodiment of the utility model.
[0024] The reference numerals in the specification are as follows:
[0025] 1. Bushing structure; 11. Bushing kit; 111. Bushing sleeve; 1111. First through hole; 1112. Accommodating groove; 112. Flange body; 12. Lubricating block; 2. Rotating shaft; 21. Annular limit plate; 3. Sealing ring; 31. First sealing groove; 32. First ring body; 321. Second sealing groove; 33. Second ring body; 331. Third sealing groove; 34. Cavity; 4. Turntable; 5. Outer sleeve. DETAILED DESCRIPTION
[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0027] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations of the utility model.
[0028] like Figure 1 and Figure 2As shown, a bushing structure 1 provided in the first embodiment of the utility model includes a bushing member 11 and at least one lubricating block 12, the bushing member 11 is provided with a first through hole 1111, the bushing member 11 is provided with at least one receiving groove 1112 connected to the first through hole 1111, the lubricating block 12 is installed in the receiving groove 1112, and the lubricating block 12 is used to lubricate the rotating connection position between the bushing member 11 and the part to be lubricated (such as the rotating shaft 2, wherein the rotating shaft 2 can be a rivet, a screw, a bolt, etc.) rotatably installed in the first through hole 1111. It can be understood that the receiving groove 1112 is arranged on the inner wall of the first through hole 1111; the liner 11 can be made of metal material, and the liner 11 made of metal material has excellent high and low temperature resistance; the lubricating block 12 can be made of materials such as graphite and molybdenum disulfide; there can be multiple receiving grooves 1112, and the number of receiving grooves 1112 can be determined according to actual needs. For example, the inner wall of the first through hole 1111 is provided with multiple hole groups distributed along the axial interval, and each hole group includes multiple receiving grooves 1112 distributed in an annular interval. Preferably, the number of lubricating blocks 12 is equal to the number of receiving grooves 1112, and multiple lubricating blocks 12 are installed in multiple receiving grooves 1112 in a one-to-one correspondence.
[0029] The bushing structure 1 of the utility model can be used in extreme high and low temperature environments (-195℃~+300℃). The bushing movement is achieved through the bimetallic composite material, which is equivalent to the bearing function. The bimetallic substrate is improved brass Steel+CuZn25Al6Fe3Mn3, and the hardness can reach 210~250HB, which is more than double the hardness and wear resistance of ordinary copper materials. The structure is light in weight, reliable in life, and the performance is not affected by vacuum, pressure, and ultraviolet radiation.
[0030] The bushing 1 has three layers of annular pores distributed along the axial direction. The opening shape can be circular or diamond-shaped, which helps to increase the contact area. The embedded solid lubricating block 11 is made of graphite or molybdenum disulfide material. Both materials have layered graphene layer structures and exist in the form of hexagonal or triangular atoms. They have high stability, and the atomic layers can slide relatively easily. They have excellent thermal conductivity and lubrication properties and are suitable for conditions with extremely large temperature differences, high radiation and vacuum in space environments. As a lubricant, they can effectively prevent mechanical equipment from being damaged by friction under low gravity.
[0031] In the utility model, a first through hole 1111 is provided on the lining member 11, and at least one receiving groove 1112 connected to the first through hole 1111 is provided on the lining member 11, and a lubricating block 12 is installed in the receiving groove 1112; the part to be lubricated is rotatably installed in the first through hole 1111, and the lubricating block 12 abuts against the part to be lubricated. During the rotation of the part to be lubricated, the part to be lubricated and the lubricating block 12 rotate and rub, and the lubricating block 12 precipitates lubricating powder, and the lubricating powder can play a role in lubricating the rotating connection position between the part to be lubricated and the lining member 11, thereby improving the smoothness and stability of the rotation between the part to be lubricated and the lining member 11. In addition, the lining member 11 can be made of metal material, and there is no need to set a rubber bushing on the lining structure 1, and there is no need to add lubricating oil. The 0 damping rotation can be achieved by the lubricating effect of the lubricating powder precipitated on the lubricating block 12, so that the high and low temperature resistance of the lining structure 1 is guaranteed, and the service life of the lining structure 1 is extended. Furthermore, when the bushing 11 rotates, the solid lubricating block 12 rubs against the rotating shaft 2 through frictional heat, forming excellent conditions for powder lubrication, which can not only protect the lubricated parts from wear, but also maintain the solid properties of the lubricating block 12 without the need for external lubricating oil or maintenance, thereby improving the convenience of use.
[0032] In one embodiment, the lubricating block 12 includes a block and a graphene layer wrapped on the block. It is understandable that the block can be made of graphite or molybdenum disulfide. Specifically, during the rotation of the lubricated part, friction heat will be generated between the lubricated part and the lubricating block 12, so that the graphene layer of the lubricating block 12 will precipitate lubricating powder to lubricate the lubricated part, and the maximum sliding speed of the lubricated part can reach 0.4m / s, and the friction coefficient of the lubricated part μ<0.16, which further ensures the smoothness of the rotation of the lubricated part in the first through hole 1111.
[0033] In one embodiment, if Figure 1 As shown, the bushing member 11 includes a bushing sleeve 111 and a flange body 112 coaxially arranged at the end of the bushing sleeve 111, and the first through hole 1111 and the receiving groove 1112 are both arranged on the bushing sleeve 111. It can be understood that a second through hole connected to the first through hole is arranged on the flange, and the lubricated member is rotatably installed in the first through hole 1111 and the second through hole. In this embodiment, the flange body 112 can be arranged at one end of the bushing member 11 to limit the installation position of the bushing member 1, or to limit the position of the external component installed on the bushing member 1, thereby improving the accuracy and convenience of the installation of the bushing structure 1.
[0034] like Figure 2 As shown, another embodiment of the utility model further provides a bushing installation device, including a rotating shaft 2 and the above-mentioned bushing structure 1, the rotating shaft 2 is rotatably installed in the first through hole 1111, and the lubricating block 12 abuts against the rotating shaft 2.
[0035] It can be understood that the rotating shaft 2 in this embodiment is the part to be lubricated in the above embodiment. The rotating shaft 2 may include but is not limited to rivets, screws, bolts, etc. installed in the first through hole 1111, and relative rotation can occur between the rotating shaft 2 and the bushing member 11. Specifically, during the rotation of the rotating shaft 2, the rotating shaft 2 contacts the lubricating block 12 and causes the lubricating block 12 to precipitate lubricating powder, and the lubricating powder can play a role in lubricating the rotating connection position between the rotating shaft 2 and the bushing member 11, thereby improving the smoothness and stability of the rotation between the rotating shaft 2 and the bushing member 11. In addition, the bushing member 11 can be made of metal material, and there is no need to set a rubber bushing on the bushing member 11, and there is no need to add lubricating oil. The lubricating effect of the lubricating powder precipitated on the lubricating block 12 can achieve zero damping rotation, and the high and low temperature resistance of the bushing installation device is guaranteed, and the service life of the bushing installation device is extended.
[0036] In one embodiment, if Figure 2 As shown, the bushing installation device also includes a sealing ring 3 and a rotating disk 4, the rotating disk 4 is rotatably sleeved on the rotating shaft 2, and the sealing ring 3 is sealed and connected between the rotating disk 4 and the bushing member 11. It can be understood that the bushing member 11 and the rotating disk 4 are both rotatably sleeved on the rotating shaft 2; the sealing ring 3 can be fixed on the bushing member 11 or on the rotating disk 4. In this embodiment, the sealing ring 3 can play a sealing role between the rotating disk 4 and the bushing member 11, avoiding the accident of dust in the environment entering the first through hole 1111 and damaging the lubricating block 12, and also avoiding the accident of leakage of lubricating powder precipitated from the lubricating block 12, thereby ensuring the lubricating effect of the lubricating block 12 on the rotating shaft 2; in addition, the rotating disk 4 and the bearing member 11 can rotate relative to each other, so that the bearing installation structure can achieve 360-degree folding movement, thereby improving the applicability of the composite bearing.
[0037] In one embodiment, if Figures 2 to 5As shown, a first sealing groove 31 is provided on the target end face of the sealing ring 3; the target end face refers to the end of the sealing ring 3 away from the liner 11 and / or the end of the sealing ring 3 away from the turntable 4. It can be understood that the first sealing ring 3 can be set at the end of the sealing ring 3 away from the liner 11, or at the end of the sealing ring 3 away from the turntable 4, or at both opposite ends of the first sealing ring 3. When the first sealing groove 31 is set at the end of the sealing ring 3 away from the liner 11, the sealing ring 3 is fixed on the liner 11, and relative rotation can occur between the sealing ring 3 and the turntable 4; when the first sealing groove 31 is set at the end of the sealing ring 3 away from the turntable 4, the sealing ring 3 is fixed on the turntable 4, and relative rotation can occur between the sealing ring 3 and the liner 11; when the first sealing groove 31 is provided at both opposite ends of the sealing ring 3, the sealing ring 3 can be fixed on the rotating shaft 2, and relative rotation can occur between the sealing ring 3 and the liner 11 and the turntable 4. Further explanation, the first sealing groove 31 includes a plurality of coaxially arranged annular grooves.
[0038] Specifically, during the relative rotation of the turntable 4 and the liner assembly 11, gas will enter the first sealing groove 31 and have a certain gas pressure. The pressure gas in the first sealing groove 31 will prevent external dust from entering the first through hole 1111 from the radial direction of the sealing ring 3, and can prevent the lubricating powder precipitated from the lubricating block 12 from leaking out from the radial direction of the sealing ring 3. In this embodiment, the first sealing groove 31 on the sealing ring 3 can prevent the lubricating powder precipitated from the lubricating block 12 from leaking, and can also prevent dust in the external environment from entering the first through hole 1111 and damaging the lubricating block 12.
[0039] In one embodiment, if Figure 5 As shown, the sealing ring 3 includes a first ring body 32 and a second ring body 33. The first ring body 32 is installed on the liner assembly 11, and the second ring body 33 is installed on the turntable 4; the end of the first ring body 32 facing away from the liner assembly 11 abuts against the end of the second ring body 33 facing away from the turntable 4; a second sealing groove 321 is provided on the end surface of the first ring body 32 facing away from the liner assembly 11, and a third sealing groove 331 is provided on the end surface of the first ring body 32 facing away from the turntable 4.
[0040] It can be understood that relative rotation can occur between the first ring body 32 and the second ring body 33; the second sealing groove 321 and the third sealing groove 331 are staggered, and the end of the first ring body 32 away from the bushing kit 11 can play the role of covering the third sealing groove 331, and the end of the second ring body 33 away from the turntable 4 can play the role of covering the second sealing groove 321.
[0041] In this embodiment, during the relative rotation of the first ring body 32 and the second ring body 33, gas will enter the second sealing groove 321 and the third sealing groove 331 and have a certain gas pressure. The pressure gas in the second sealing groove 321 and the third sealing groove 331 will prevent external dust from entering the first through hole 1111 from the radial direction of the sealing ring 3, and can prevent the lubricating powder precipitated from the lubricating block 12 from leaking from the radial direction of the sealing ring 3. The design of the sealing ring 3 including the first ring body 32 and the second ring body 33 further ensures the sealing performance of the sealing ring 3.
[0042] In one embodiment, if Figure 6 As shown, the sealing ring 3 is sealingly sleeved on the rotating shaft 2, and a plurality of cavities 34 are arranged at intervals on the inner wall where the sealing ring 3 and the rotating shaft 2 are in contact. It can be understood that the plurality of cavities 34 are arranged at intervals along the axial direction of the sealing ring 3, and the cavity 34 is an annular groove. Specifically, during the rotation of the rotating shaft 2, gas will enter the cavity 34 and have a unified gas pressure. The pressurized gas in the cavity 34 will prevent external dust from entering the first through hole 1111 from the axial direction of the sealing ring 3, and can prevent the lubricating powder precipitated from the lubricating block 12 from leaking out from the axial direction of the sealing ring 3, thereby ensuring the sealing performance of the bushing installation device.
[0043] The bushing installation device of the above-mentioned embodiment can have both good movement function and good sealing performance. It has no vulcanized rubber structure, and realizes the movement function of the bushing structure through the sliding of the bimetallic layer. It has no liquid lubricating oil component, breaking through the limitation of general bushings or bearings relying on oil film lubrication. Only by embedding the solid lubricating block 12, the wear resistance can be made more than twice that of oil film lubrication; and during use, the sealing grooves (such as the first sealing groove 31, the second sealing groove 32 or the third sealing groove 33, etc.) and the cavity 34 on the sealing ring 3 can be used to isolate external sand and dust particles, and at the same time, the air flow resistance in the above-mentioned sealing grooves and / or the cavity 34 can be used to prevent the solid lubricating block 12 embedded in the bushing member 11 from precipitating and leaking out.
[0044] In one embodiment, if Figure 2 As shown, the bushing installation device also includes an annular stop plate 21 disposed at the end of the rotating shaft 2, the annular stop plate 21 is coaxially disposed with the rotating shaft 2, and the annular stop plate 21 abuts against the end surface of the rotating disk 4 away from the sealing ring 3. It can be understood that the annular stop plate 21 and the rotating shaft 2 are integrally formed parts, and the annular stop plate 21 can play a role in axially pressing the rotating disk 4, the sealing ring 3 and the bushing member 11, thereby ensuring the stability of the bushing installation device.
[0045] In one embodiment, if Figure 2As shown, the bushing installation device includes two sealing rings 3 and two rotating disks 4; the two sealing rings 3 are respectively arranged at the opposite ends of the bushing member 11; the two rotating disks 4 are respectively arranged on the side of the two sealing rings 3 away from the bushing member 11; preferably, the two sealing rings 3 are symmetrically arranged, and the two rotating disks 4 are symmetrically arranged. The bushing installation device also includes an outer sleeve 5 sleeved on the bushing member 11, and the two ends of the outer sleeve 5 are respectively abutted against the two sealing rings 3. It can be understood that the bushing member 11 is interference-fitted in the inner hole of the outer sleeve 5, and the outer sleeve 5 and the bushing member 11 will not rotate relative to each other. In this embodiment, the outer sleeve 5 can play a role of isolation between the receiving groove 1112 and the outer diameter environment from the radial direction, avoiding the accident of the external environment entering the receiving groove 1112 and damaging the lubricating block 12.
[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A bushing structure, characterized in that: The invention comprises a lining member and at least one lubricating block, wherein the lining member is provided with a first through hole, the lining member is provided with at least one receiving groove connected to the first through hole, the lubricating block is installed in the receiving groove, and the lubricating block is used to lubricate the rotating connection position between the lining member and the part to be lubricated rotatably installed in the first through hole.
2. The bushing structure according to claim 1, characterized in that: The lubricating block comprises a block body and a graphene layer wrapped on the block body.
3. The bushing structure according to claim 1, characterized in that: The bushing member comprises a bushing sleeve and a flange body coaxially arranged at the end of the bushing sleeve, and the first through hole and the accommodating groove are both arranged on the bushing sleeve.
4. A bushing installation device, characterized in that: It comprises a rotating shaft and a bushing structure according to any one of claims 1 to 3, wherein the rotating shaft is rotatably installed in the first through hole, and the lubricating block abuts against the rotating shaft.
5. The bushing installation device according to claim 4, characterized in that: The bushing installation device also includes a sealing ring and a rotating disk. The rotating disk is rotatably sleeved on the rotating shaft, and the sealing ring is sealingly connected between the rotating disk and the bushing assembly.
6. The bushing installation device according to claim 5, characterized in that: A first sealing groove is arranged on a target end face of the sealing ring; the target end face refers to an end of the sealing ring away from the bushing member and / or an end of the sealing ring away from the rotating disk.
7. The bushing installation device according to claim 5, characterized in that: The sealing ring comprises a first ring body and a second ring body, wherein the first ring body is mounted on the liner member, and the second ring body is mounted on the rotating disk; an end of the first ring body away from the liner member abuts against an end of the second ring body away from the rotating disk; A second sealing groove is provided on the end surface of the first ring body facing away from the liner assembly, and a third sealing groove is provided on the end surface of the first ring body facing away from the rotating disk.
8. The bushing installation device according to claim 5, characterized in that: The sealing ring is sealingly sleeved on the rotating shaft, and a plurality of cavities distributed at intervals are provided on the inner wall where the sealing ring and the rotating shaft are in contact.
9. The bushing installation device according to claim 5, characterized in that: The bushing installation device also includes an annular limiting plate arranged at the end of the rotating shaft, the annular limiting plate is coaxially arranged with the rotating shaft, and the annular limiting plate abuts against the end surface of the rotating disk away from the sealing ring.
10. The bushing installation device according to claim 5, characterized in that: The bushing installation device includes two sealing rings and two rotating disks; the two sealing rings are respectively arranged at the opposite ends of the bushing sleeve; the two rotating disks are respectively arranged on the side of the two sealing rings away from the bushing sleeve; the bushing installation device also includes an outer sleeve sleeved on the bushing sleeve, and the two ends of the outer sleeve are respectively abutted against the two sealing rings.