CN115948981A - High-temperature-resistant and corrosion-resistant spherical support with metal friction surface - Google Patents
High-temperature-resistant and corrosion-resistant spherical support with metal friction surface Download PDFInfo
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- CN115948981A CN115948981A CN202211665297.4A CN202211665297A CN115948981A CN 115948981 A CN115948981 A CN 115948981A CN 202211665297 A CN202211665297 A CN 202211665297A CN 115948981 A CN115948981 A CN 115948981A
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a high-temperature-resistant and corrosion-resistant spherical support with a metal friction surface, which comprises an upper support 1, a spherical crown lining plate 2 and a lower support 3 which are sequentially arranged; wherein the upper support 1 is fixed on the crossbeam through an anchor bolt component 5, the lower support 3 is fixed on the abutment through an anchor bolt 4, and the spherical crown lining plate 2 is positioned in the lower support 3. The upper support plate 1 and the lower support plate 3 are made of duplex stainless steel, the spherical cap lining plate 2 is made of copper alloy as a solid self-lubricating material, and compared with a high polymer material sliding plate, the bearing capacity is higher, and the safety redundancy of bearing is larger; the friction pair is directly formed by the top and the bottom of the spherical cap lining plate 2 and the upper support 1 and the lower support 3 respectively, a sliding plate made of high molecular materials in a common support is replaced, the friction coefficient of the friction pair under 45Mpa is less than or equal to 0.11, the design requirement of the spherical support is met, the spherical support is made of alloy materials, the performance can be kept stable in a high-temperature corrosion marine climate environment, and the service life of the spherical support is greatly prolonged.
Description
Technical Field
The invention belongs to the technical field of bridge facilities, and particularly relates to a high-temperature-resistant and corrosion-resistant spherical support with a metal friction surface.
Background
The spherical support is an important part for connecting the upper structure and the lower structure of the bridge, and can reliably transmit the counter force and the deformation (displacement and corner) of the upper structure of the bridge to the lower structure of the bridge, so that the stress condition of the structure is consistent with a theoretical calculation diagram, and the quality and the performance of the spherical support directly influence the practicability and the durability of the whole bridge. The spherical bearing is generally composed of a lower bearing plate, a spherical crown lining plate, an upper bearing plate, a sliding plate (a plane sliding plate and a spherical surface sliding plate are respectively one), a rubber sealing ring, a dust cover and the like. The plane sliding plate and the spherical sliding plate are main sliding components of the support, the rotation angle of the support is realized by the sliding between the spherical crown lining plate and the spherical sliding plate, and the displacement of the support is realized by the sliding between the plane sliding plate and the lower support plate; the sliding plate is made of high polymer material, and the surface of the sliding plate is coated with silicone grease to reduce sliding friction and abrasion, so the abrasion of the sliding plate is related to the service life of the spherical support.
At the present stage, the application range of the common bridge support is-40-60 ℃, and the common bridge support can cause the following problems when being used under the environment conditions of high temperature and high corrosion marine climate: (1) Under the environment condition of high-temperature and high-corrosion marine climate, the bridge support is required to work at the temperature of-40-80 ℃, and the application range of the common bridge support is-40-60 ℃; the mechanical and physical performance stability of the current common high polymer material sliding plate is sharply reduced under the condition that the temperature is higher than 60 ℃, the sliding plate is easy to damage, and the service life of the support is shortened; (2) The silicone grease coated on the high polymer material sliding plate is consumed in the long-term use process, the sliding plate has no self-lubricating function, and the abrasion of the sliding plate is increased, so that the service life of the support is greatly influenced; (3) The bridge support coating system is required to have good high salt mist tolerance, environmental adaptability and temperature change resistance under the high-temperature and high-corrosion marine climate environmental condition, the problems of installation damage, difficult repair and the like can occur in the installation and use process of the bridge support in the currently used heavy-duty anticorrosion system, the risk of local corrosion of the bridge support is improved, and the service life of the bridge support is influenced.
Therefore, in the present stage, a high-temperature-resistant and corrosion-resistant spherical support is urgently needed, and has the characteristics of self-lubricating function, stable performance, long service life and the like, so that the spherical support can be suitable for marine climate environments.
Disclosure of Invention
Aiming at the problem that the spherical support in the prior art is easy to lose efficacy and damage under the high-temperature and high-corrosion marine climate environmental conditions, the invention provides the high-temperature-resistant and corrosion-resistant spherical support with the metal friction surface to solve the problems.
In order to achieve the aim, the invention provides a high-temperature-resistant and corrosion-resistant metal friction surface spherical support which comprises an upper support, a lower support and a lower support, wherein the upper support is made of duplex stainless steel 022Cr22Ni5Mo3N and is fixed on a girder through an anchor bolt assembly, and a first mirror surface layer is arranged at the bottom of the upper support; the spherical cap lining plate is made of a copper alloy ZCuAl9Mn material, is positioned between the upper support and the lower support and serves as a sliding part, the top of the spherical cap lining plate is provided with a second mirror surface layer with a spherical structure, and the bottom of the spherical cap lining plate is provided with a third mirror surface layer with a planar structure; the lower support is made of duplex stainless steel 022Cr22Ni5Mo3N and fixed on the abutment through a foot bolt, and the top of the lower support is provided with a fourth mirror surface layer; the spherical surface is utilized to rotate through a spherical friction pair consisting of the first mirror surface layer and the second mirror surface layer, so that the rotation angle of the support is adjusted; a plane is horizontally displaced through a plane friction pair consisting of the third mirror surface layer and the fourth mirror surface layer, so that the horizontal sliding of the support is realized; the friction coefficient of the spherical friction pair and the plane friction pair under the pressure of 45Mpa is less than or equal to 0.11.
Furthermore, a plurality of embedding holes are formed in the top and the bottom of the spherical cap lining plate in an array mode, and graphite lubricating columns are arranged in the embedding holes.
Furthermore, the bottom of the graphite lubricating column is provided with a spring, the other end of the spring is abutted against the bottom of the embedding hole, the spring pushes the graphite lubricating column through self elastic potential energy, the graphite lubricating column is enabled to be always kept in an abutting state with the first mirror surface layer and the fourth mirror surface layer respectively, and the graphite lubricating column is worn and torn to form a lubricating layer when sliding relatively, so that the friction coefficient of spherical friction and plane friction pairs is reduced, and the abrasion of the spherical crown lining plate is reduced.
Furthermore, the anchor bolt assembly and the foundation bolt are respectively made of steel materials A2-70.
Furthermore, the top of the lower support is respectively provided with a limiting frame along the bridge direction and the transverse bridge direction, and the upper support plate is limited by the limiting frames so as to bear horizontal loads in all directions without displacement in all directions.
Further, the bottom suspension saddle top is equipped with spacing along the horizontal bridge to, be equipped with the curb plate gib block on the spacing, the curb plate gib block with along the horizontal bridge to the recess cooperation of locating the upper bracket side, carry out spacing direction to the upper bracket, avoid it to carry out one-way horizontal displacement along the horizontal bridge, make it along following the bridge to carrying out one-way horizontal displacement.
Furthermore, the fourth mirror layer area that the undersetting top was equipped with is greater than the third mirror layer area, makes the spherical cap welt can carry out the horizontal slip at the undersetting top along a plurality of directions to bear the horizontal load of each side, have multidirectional displacement performance.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. according to the high-temperature-resistant corrosion-resistant metal friction surface spherical support, the spherical cap lining plate is made of copper alloy ZCuAl9Mn (or materials with the same performance), the chemical composition and the mechanical property of the spherical cap lining plate meet the requirements of GB/T1176-2013, the spherical cap lining plate has good corrosion resistance, and when the spherical cap lining plate is directly combined with an upper support and a lower support to form a friction pair, the sliding property and the self-lubricating property are good due to the material characteristics of the spherical cap lining plate, silicone grease does not need to be coated, and the friction coefficient is low and stable.
2. According to the high-temperature-resistant corrosion-resistant metal friction surface spherical support, the plurality of embedding holes are formed in the top and the bottom of the spherical crown lining plate in an array manner, the graphite lubricating columns are arranged in the embedding holes, and when the spherical crown lining plate slides relative to the upper support and the lower support respectively, the outer parts of the graphite lubricating columns are abraded and adhered to the friction surface, so that a firm lubricating film can be formed, the wettability of the metal surface to other lubricants can be improved, and the long-time lubricating effect can be kept.
3. According to the high-temperature-resistant and corrosion-resistant spherical support with the metal friction surface, the upper support plate and the lower support plate are made of duplex stainless steel 022Cr22Ni5Mo3N, the chemical components and the mechanical properties of the support are in accordance with the requirements of GB/T4237-2007, and the anchor bolt component and the foundation bolt are made of A2-70 steel respectively, so that the overall material of the spherical support has high-temperature-resistant and corrosion-resistant properties, the performance can be kept stable in a high-temperature corrosion marine climate environment, and the service life of the spherical support is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of a high temperature and corrosion resistant spherical support for a metal friction surface according to a first embodiment of the present invention;
FIG. 2 is a schematic bottom view of the spherical cap liner according to the first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fixed ball-type socket according to a second embodiment of the present invention;
FIG. 4 is a schematic structural view of a one-way ball-type socket according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a multidirectional ball-type socket according to a third embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-upper support, 11-first mirror surface layer, 2-spherical cap lining plate, 21-second mirror surface layer, 22-third mirror surface layer, 23-embedded hole, 3-lower support, 31-fourth mirror surface layer, 32-limiting frame, 4-foundation bolt, 5-anchor bolt component, 6-graphite lubricating column and 7-side plate guide strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-2, the invention provides a high temperature resistant and corrosion resistant spherical support with a metal friction surface, which comprises an upper support 1, a spherical crown lining plate 2 and a lower support 3 which are sequentially arranged; wherein the upper support 1 is fixed on the crossbeam through an anchor bolt component 5, the lower support 3 is fixed on the abutment through an anchor bolt 4, and the spherical crown lining plate 2 is positioned on the top of the lower support 3. The top of the spherical cap lining plate 2 is provided with a second mirror surface layer 21 with a spherical structure, and the bottom of the spherical cap lining plate is provided with a third mirror surface layer 22 with a planar structure; the bottom of the upper support 1 is provided with a first mirror layer 11 matched with a second mirror layer 21; the top of the lower support 3 is provided with a fourth mirror layer 31. The spherical friction pair consisting of the first mirror surface layer 11 and the second mirror surface layer 21 rotates by utilizing the spherical surface to realize the rotation angle adjustment of the support; the horizontal sliding of the support is realized by using the horizontal displacement of the plane through the plane friction pair consisting of the third mirror layer 22 and the fourth mirror layer 31. In the support, a spherical crown lining plate 2 is made of a copper alloy ZCuAl9Mn material, the chemical components and the mechanical properties of the spherical crown lining plate meet the requirements of GB/T1176-2013, an upper support plate 1 and a lower support plate 3 are made of duplex stainless steel 022Cr22Ni5Mo3N, and the chemical components and the mechanical properties of the spherical crown lining plate meet the requirements of GB/T4237-2007; the spherical cap lining plate 2 adopts copper alloy as a solid self-lubricating material, compared with a high polymer material sliding plate, the bearing capacity is higher, and when the same surface pressure as the high polymer material sliding plate is selected during design, the bearing safety redundancy is larger; the friction pair is directly formed by the top and the bottom of the spherical cap lining plate 2 and the upper support 1 and the lower support 3 respectively, a plane sliding plate and a spherical sliding plate which are made of high molecular materials in a common support are replaced, the friction coefficient of the friction pair under 45Mpa is less than or equal to 0.11, the design requirement of the spherical support is met, and the spherical support is made of alloy materials, can keep stable performance in a high-temperature corrosive marine climate environment, and greatly prolongs the service life of the spherical support.
Example 1
As shown in FIG. 1, the upper support plate 1 is made of duplex stainless steel 022Cr22Ni5Mo3N (or materials with the same performance), and the chemical composition and the mechanical property of the upper support plate meet the requirements of GB/T4237-2007. The bottom of the upper support plate 1 is polished through polishing to form a first mirror surface layer 11 which is of a concave spherical structure and matched with the spherical crown lining plate 2, and the rotation angle of the support is adjusted through a spherical friction pair formed by the spherical crown lining plate 2. During installation, the upper support plate 1 can be fixed on a girder through the anchor bolt assembly 5, wherein the anchor bolt assembly 5 is made of stainless steel material and has good corrosion resistance, and preferably, the anchor bolt assembly 5 can be made of A2-70 steel material.
The lower support 3 is made of duplex stainless steel 022Cr22Ni5Mo3N (or a material with the same performance), and the chemical components and the mechanical properties of the lower support meet the requirements of GB/T4237-2007. The top of the lower support 3 is polished through polishing to form a fourth mirror surface layer 31 which is of a plane structure and is matched with the bottom of the spherical cap lining plate 2, and the horizontal sliding of the support is realized through a plane friction pair formed by the lower support and the spherical cap lining plate 2. During installation, the lower support 3 can be fixed on a girder by pouring anchor bolts 4 in advance, wherein the anchor bolts 4 are made of stainless steel and have good corrosion resistance, and preferably, the anchor bolts 4 can be made of A2-70 steel.
The spherical crown lining plate 2 is made of copper alloy ZCuAl9Mn (or a material with the same performance), the chemical composition and the mechanical property of the spherical crown lining plate meet the requirements of GB/T1176-2013, the spherical crown lining plate has good corrosion resistance, and when the spherical crown lining plate and the upper support 1 and the lower support 3 respectively directly form a friction pair, the sliding property and the self-lubricating property are good due to the material characteristics of the spherical crown lining plate, silicone grease does not need to be coated, and the friction coefficient is low and stable. Preferably, as shown in fig. 2, the top and bottom of the spherical cap liner plate 2 are provided with a plurality of embedded holes 23 in an array manner, the embedded holes 23 are internally provided with graphite lubrication columns 6, when the spherical cap liner plate 2 slides relative to the upper support 1 and the lower support 3, respectively, the outer parts of the graphite lubrication columns 6 are worn and adhered to the friction surfaces, so that not only a firm lubrication film can be formed, but also the wettability of the metal surface to other lubricants can be improved, and the long-term lubrication effect can be maintained. Preferably, 6 bottoms of graphite lubrication post still are equipped with the spring, and the spring other end is contradicted with inlay 23 bottoms in the hole, utilizes self elastic potential energy to promote graphite lubrication post 6 through the spring, makes graphite lubrication post 6 keep the conflict state with first mirror layer 11, fourth mirror layer 31 respectively all the time, thereby is worn and torn more easily and forms the lubricant film when taking place relative slip, reduces the vice coefficient of friction of spherical friction and plane friction, reduces the wearing and tearing of spherical crown welt 2, makes its operation more stable, has prolonged spherical bearing's life greatly.
Example 2
In a second embodiment of the present invention, as shown in fig. 3, a high temperature and corrosion resistant spherical support for a metal friction surface is provided, which can bear horizontal load in all directions without displacement in all directions; the spherical cap liner comprises an upper support 1, a spherical cap liner plate 2 and a lower support 3 which are arranged in sequence; the upper support 1 is fixed on a crossbeam through an anchor bolt assembly 5, and the lower support 3 is fixed on an abutment through a foundation bolt 4; the upper support plate 1 and the lower support plate 3 are respectively made of duplex stainless steel 022Cr22Ni5Mo3N, the spherical cap lining plate 2 is made of copper alloy ZCuAl9Mn material, and the anchor bolt assembly 5 and the foundation bolt 4 are respectively made of A2-70 steel; the top of the spherical crown lining plate 2 is provided with a second mirror surface layer 21 which forms a spherical friction pair with the first mirror surface layer 11 arranged at the bottom of the upper support 1; the bottom of the spherical cap lining plate 2 is provided with a third mirror surface layer 22, and a plane friction pair consisting of a fourth mirror surface layer 31 arranged at the top of the lower support 3; a plurality of embedding holes 23 are formed in the top and the bottom of the spherical crown lining plate 2 in an array manner, and graphite lubricating columns 6 are arranged in the embedding holes 23; and a spring is arranged between the bottom of the graphite lubricating column 6 and the bottom of the embedded hole 23.
In the third embodiment of the present invention, the top of the lower support 3 is respectively provided with the limiting frame 32 along the bridge direction and the transverse bridge direction, and the upper support plate 1 is limited by the limiting frame 32 to avoid horizontal displacement.
Example 3
In a third embodiment of the present invention, as shown in fig. 4, a high temperature resistant and corrosion resistant spherical support with a metal friction surface is provided, which can bear unidirectional horizontal load and has a capability of shifting along the bridge direction; the spherical cap liner comprises an upper support 1, a spherical cap liner plate 2 and a lower support 3 which are arranged in sequence; the upper support 1 is fixed on a crossbeam through an anchor bolt assembly 5, and the lower support 3 is fixed on an abutment through a foundation bolt 4; the upper support plate 1 and the lower support plate 3 are respectively made of duplex stainless steel 022Cr22Ni5Mo3N, the spherical cap lining plate 2 is made of copper alloy ZCuAl9Mn material, and the anchor bolt assembly 5 and the foundation bolt 4 are respectively made of A2-70 steel; the top of the spherical crown lining plate 2 is provided with a second mirror surface layer 21 which forms a spherical friction pair with the first mirror surface layer 11 arranged at the bottom of the upper support 1; the bottom of the spherical cap lining plate 2 is provided with a third mirror surface layer 22, and a plane friction pair consisting of a fourth mirror surface layer 31 arranged at the top of the lower support 3; a plurality of embedding holes 23 are formed in the top and bottom of the spherical cap lining plate 2 in an array mode, and graphite lubricating columns 6 are arranged in the embedding holes 23; and a spring is arranged between the bottom of the graphite lubricating column 6 and the bottom of the hole of the embedding hole 23.
In the third embodiment of the invention, the top of the lower support 3 is provided with a limiting frame 32 along the transverse bridge direction, the limiting frame 32 is provided with a side plate guide strip 7 which is matched with a groove arranged on the side edge of the upper support 1 along the transverse bridge direction to limit and guide the upper support 1, so that the horizontal displacement along the transverse bridge direction is avoided, and the upper support is enabled to perform unidirectional horizontal displacement along the bridge direction.
Example 4
In a fourth embodiment of the present invention, as shown in fig. 5, a high temperature and corrosion resistant spherical support with a metal friction surface is provided, which can bear horizontal load in all directions and has multi-directional displacement performance; the spherical cap liner plate comprises an upper support 1, a spherical cap liner plate 2 and a lower support 3 which are arranged in sequence; the upper support 1 is fixed on a crossbeam through an anchor bolt assembly 5, and the lower support 3 is fixed on an abutment through a foundation bolt 4; the upper support plate 1 and the lower support plate 3 are respectively made of duplex stainless steel 022Cr22Ni5Mo3N, the spherical cap lining plate 2 is made of copper alloy ZCuAl9Mn material, and the anchor bolt component 5 and the foundation bolt 4 are respectively made of A2-70 steel; the top of the spherical crown lining plate 2 is provided with a second mirror surface layer 21 which forms a spherical friction pair with the first mirror surface layer 11 arranged at the bottom of the upper support 1; the bottom of the spherical cap lining plate 2 is provided with a third mirror surface layer 22, and a plane friction pair consisting of a fourth mirror surface layer 31 arranged at the top of the lower support 3; a plurality of embedding holes 23 are formed in the top and bottom of the spherical cap lining plate 2 in an array mode, and graphite lubricating columns 6 are arranged in the embedding holes 23; and a spring is arranged between the bottom of the graphite lubricating column 6 and the bottom of the embedded hole 23.
In the fourth embodiment of the present invention, the area of the fourth mirror layer 31 disposed on the top of the lower support 3 is larger than the area of the third mirror layer 22, so that the spherical cap liner 2 can slide horizontally on the top of the lower support 3 along multiple directions, thereby bearing horizontal loads in all directions and having multi-directional displacement performance.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (7)
1. A high temperature resistant anticorrosive metal friction surface ball-type support, its characterized in that includes:
the upper support (1) is made of duplex stainless steel 022Cr22Ni5Mo3N, is fixed on the girder through an anchor bolt component (5), and is provided with a first mirror layer (11) at the bottom;
the spherical cap lining plate (2) is made of copper alloy ZCuAl9Mn material, is positioned between the upper support (1) and the lower support (3) and serves as a sliding part, the top of the spherical cap lining plate is provided with a second mirror surface layer (21) with a spherical structure, and the bottom of the spherical cap lining plate is provided with a third mirror surface layer (22) with a planar structure;
the lower support (3) is made of duplex stainless steel 022Cr22Ni5Mo3N and fixed on the pier through a foot bolt (4), and the top of the lower support is provided with a fourth mirror surface layer (31);
the spherical friction pair consisting of the first mirror surface layer (11) and the second mirror surface layer (21) rotates by utilizing the spherical surface to realize the adjustment of the rotating angle of the support; a plane friction pair consisting of the third mirror layer (22) and the fourth mirror layer (31) horizontally displaces by using a plane to realize the horizontal sliding of the support; the friction coefficient of the spherical friction pair and the plane friction pair under the pressure of 45Mpa is less than or equal to 0.11.
2. The high-temperature-resistant and corrosion-resistant metal friction surface ball type support seat according to claim 1, wherein a plurality of embedded holes (23) are formed in the top and bottom of the spherical cap lining plate (2) in an array mode, and graphite lubricating columns (6) are arranged in the embedded holes (23).
3. The high-temperature-resistant and corrosion-resistant metal friction surface ball type support seat as claimed in claim 2, wherein a spring is further arranged at the bottom of the graphite lubricating column (6), the other end of the spring is abutted against the bottom of the embedded hole (23), the graphite lubricating column (6) is pushed by the spring through the elastic potential energy of the spring, so that the graphite lubricating column (6) always keeps an abutting state with the first mirror surface layer (11) and the fourth mirror surface layer (31), the lubricating layer is formed by abrasion when relative sliding occurs, the friction coefficient of a spherical friction pair and a plane friction pair is reduced, and the abrasion of the spherical cap lining plate (2) is reduced.
4. The high temperature and corrosion resistant metal friction surface ball bearing according to claim 1, wherein the anchor bolt assembly (5) and the anchor bolt (4) are made of steel of A2-70 materials respectively.
5. The high-temperature-resistant and corrosion-resistant metal friction surface spherical support according to any one of claims 1 to 4, wherein the top of the lower support (3) is respectively provided with a limiting frame (32) along the bridge direction and the transverse bridge direction, and the upper support plate (1) is limited by the limiting frames (32) to bear horizontal load in all directions without displacement in all directions.
6. The high-temperature-resistant and corrosion-resistant metal friction surface spherical support according to any one of claims 1 to 4, wherein a limiting frame (32) is arranged at the top of the lower support (3) along the transverse bridge direction, a side plate guide strip (7) is arranged on the limiting frame (32), and the side plate guide strip (7) is matched with a groove arranged on the side edge of the upper support (1) along the transverse bridge direction to limit and guide the upper support (1) so as to prevent the upper support from horizontally displacing along the transverse bridge direction and enable the upper support to horizontally displace along the bridge direction in a single direction.
7. The high temperature and corrosion resistant metal friction surface ball bearing according to any one of claims 1-4, wherein the top of the lower bearing (3) is provided with a fourth mirror surface layer (31) with an area larger than that of the third mirror surface layer (22), so that the ball cap lining plate (2) can slide horizontally on the top of the lower bearing (3) along multiple directions, thereby bearing horizontal load and having multidirectional displacement performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211665297.4A CN115948981A (en) | 2022-12-23 | 2022-12-23 | High-temperature-resistant and corrosion-resistant spherical support with metal friction surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211665297.4A CN115948981A (en) | 2022-12-23 | 2022-12-23 | High-temperature-resistant and corrosion-resistant spherical support with metal friction surface |
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| Publication Number | Publication Date |
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| CN115948981A true CN115948981A (en) | 2023-04-11 |
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|---|---|---|---|
| CN202211665297.4A Pending CN115948981A (en) | 2022-12-23 | 2022-12-23 | High-temperature-resistant and corrosion-resistant spherical support with metal friction surface |
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| Country | Link |
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| CN (1) | CN115948981A (en) |
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- 2022-12-23 CN CN202211665297.4A patent/CN115948981A/en active Pending
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