CN111945553B - Modified high-damping composite material rubber support - Google Patents
Modified high-damping composite material rubber support Download PDFInfo
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- CN111945553B CN111945553B CN202010680658.7A CN202010680658A CN111945553B CN 111945553 B CN111945553 B CN 111945553B CN 202010680658 A CN202010680658 A CN 202010680658A CN 111945553 B CN111945553 B CN 111945553B
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- rubber
- laminated
- limiting column
- column
- damping
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 131
- 238000013016 damping Methods 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 230000000670 limiting effect Effects 0.000 claims abstract description 76
- 239000007787 solid Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000002086 nanomaterial Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a modified high-damping composite material rubber support which comprises an upper connecting plate, a lower connecting plate, a rubber laminated support assembly and an energy-absorbing damping assembly, wherein a through hole penetrating up and down is formed in the middle of the rubber laminated support assembly, the energy-absorbing damping assembly is arranged in the through hole, the upper connecting plate is arranged at the upper end of the rubber laminated support assembly, the lower connecting plate is arranged at the lower end of the rubber laminated support assembly, and the rubber laminated support assembly comprises a rubber laminate and a laminated plate. According to the invention, the rubber elastic columns which are mutually stacked are arranged between two adjacent groups of rubber laminates, so that the elastic effect between the rubber laminates is increased, the damping characteristic of the rubber support is improved, the limiting assembly is arranged between the laminates, the rubber is prevented from being damaged due to excessive extrusion through the limiting action between the upper limiting column and the lower limiting column, and the spring is arranged between the upper limiting column and the lower limiting column, so that the elastic effect between the laminates is further enhanced, and the damping characteristic of the rubber support is improved.
Description
Technical Field
The invention relates to the technical field of rubber supports, in particular to a modified high-damping composite material rubber support.
Background
At present, supports for bridges and buildings are generally made of natural rubber, and supports with high damping are generally lead core rubber supports, namely, one or more lead cores are added inside the natural rubber supports; however, although the lead core rubber support has high damping and good protection effect, lead is heavy metal, so that pollution is caused to the environment in the use process, harm is brought to the health of workers in the production process, and the lead core rubber support does not meet the requirements of green environmental protection; and the self-recovery capability of the support is weak, the vibration isolation frequency band is narrow, and the support made of natural rubber is easy to deform greatly when the external is subjected to overlarge impact force, so that the rubber is damaged due to excessive deformation.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, one object of the present invention is to provide a modified high damping composite material rubber support, which adopts an energy-absorbing damping component to replace a lead core, thereby avoiding environmental pollution caused by the lead core, improving the damping characteristic of the rubber support by increasing the elastic bearing capacity between the rubber laminated support components, and preventing the rubber material from being deformed and damaged excessively due to an excessive force applied to the rubber material by providing a limiting component.
The modified high-damping composite material rubber support comprises an upper connecting plate, a lower connecting plate, a rubber laminated support assembly and an energy-absorbing damping assembly, wherein a through hole which penetrates through the middle of the rubber laminated support assembly up and down is formed in the middle of the rubber laminated support assembly, the energy-absorbing damping assembly is arranged in the through hole, the upper connecting plate is arranged at the upper end of the rubber laminated support assembly, the lower connecting plate is arranged at the lower end of the rubber laminated support assembly, the rubber laminated support assembly comprises a rubber laminate and laminated plates, the rubber laminated support assembly is formed by alternately stacking a plurality of rubber laminates and a plurality of laminated plates up and down, rubber elastic columns are uniformly arranged on the upper end surface and the lower end surface of each rubber laminate, the rubber elastic columns and the rubber laminates are integrally formed, and rubber elastic column mounting grooves are formed in the positions of the laminated plates, which correspond to the rubber elastic columns, the rubber elasticity post is installed inside the rubber elasticity post mounting groove, every group the inside upper and lower symmetry of rubber elasticity post mounting groove has piled up two sets of rubber elasticity posts.
Preferably, a limiting component mounting groove is formed between two adjacent groups of rubber elastic columns in the same row, a limiting component is mounted inside the limiting component mounting groove, and the limiting component is connected with the laminated plate.
Preferably, the limiting assembly comprises an upper limiting column and a lower limiting column, the upper limiting column is connected with the upper end of the laminated plate, the lower limiting column is connected with the lower end of the laminated plate, the limiting assembly is formed by stacking the upper limiting column and the lower limiting column which are arranged on the laminated plate and adjacent to each other, and the upper end of the upper limiting column arranged above the laminated plate and below the laminated plate is connected with the lower limiting column arranged above the laminated plate.
Preferably, the vertical section of the upper limiting column is concave, the vertical section of the lower limiting column is convex matched with the upper limiting column, and the outer side of the lower limiting column is provided with a spring in a nested mode.
Preferably, the vertical section of the rubber elastic column is U-shaped, and one side of the rubber elastic column with the larger inner diameter is connected with the rubber lamination.
Preferably, a rubber gasket for preventing the rubber elastic column from being in hard contact with the laminated plate is installed on the inner wall of the rubber elastic column installation groove.
Preferably, the energy-absorbing damping assembly comprises a shell, an energy-absorbing composite material formed by compounding a porous nano material and a matrix liquid, and a solid shaft, wherein the solid shaft is arranged in the middle of the inner side of the shell, and the energy-absorbing composite material is filled between the shell and the solid shaft.
Preferably, the housing and the solid shaft are both of shape memory alloy.
According to the invention, the rubber elastic columns which are stacked mutually are arranged between two adjacent groups of rubber laminates, so that the elastic effect between the rubber laminates is increased, the damping characteristic of the rubber support is improved, the limiting assembly is arranged between the laminates, the rubber is prevented from being damaged due to excessive extrusion through the limiting effect between the upper limiting column and the lower limiting column, the spring is arranged between the upper limiting column and the lower limiting column, so that the elastic effect between the laminates is further enhanced, the damping characteristic of the rubber support is improved, the energy-absorbing damping assembly is adopted to replace a lead core, and the environmental pollution caused by the lead core is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a modified high-damping composite material rubber support provided by the invention;
FIG. 2 is a schematic structural diagram of a rubber laminate carrier assembly according to the present invention;
FIG. 3 is a schematic view of a rubber laminate according to the present invention;
Fig. 4 is a schematic structural view of a laminated plate portion according to the present invention.
In the figure: 1-upper connecting plate, 2-lower connecting plate, 3-rubber laminated support component, 4-screw, 31-rubber laminated, 32-limiting component mounting groove, 33-rubber elastic column, 34-laminated plate, 35-upper limiting column, 36-lower limiting column, 37-rubber elastic column mounting groove, 38-spring, 51-shell, 52-energy-absorbing composite material and 53-solid shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-4, a modified high damping composite material rubber support comprises an upper connecting plate 1, a lower connecting plate 2, a rubber laminated support component 3 and an energy absorption damping component, wherein a through hole penetrating from top to bottom is formed in the middle of the rubber laminated support component 3, the energy absorption damping component is arranged in the through hole, the upper connecting plate 1 is arranged at the upper end of the rubber laminated support component 3, the lower connecting plate 2 is arranged at the lower end of the rubber laminated support component 3, the rubber laminated support component 3 comprises a rubber laminate 31 and laminated plates 34, the rubber laminated support component 3 is formed by alternately stacking a plurality of rubber laminates 31 and a plurality of laminated plates 34 from top to bottom, rubber elastic columns 33 are uniformly arranged on the upper end surface and the lower end surface of the rubber laminate 31, the rubber elastic columns 33 and the rubber laminate 31 are integrally formed, rubber elastic column mounting grooves 37 are formed in the positions of the laminated plates 34 corresponding to the rubber elastic columns 33, the rubber elastic columns 33 are arranged in the rubber elastic column mounting grooves 37, and two groups of rubber elastic columns 33 are symmetrically stacked up and down in each group of rubber elastic column mounting grooves 37; a limiting component mounting groove 32 is formed between two adjacent groups of rubber elastic columns 33 in the same row, a limiting component is mounted inside the limiting component mounting groove 32 and connected with the laminated plate 34; the limiting assembly comprises an upper limiting column 35 and a lower limiting column 36, the upper limiting column 35 is connected with the upper end of the laminated plate 34, the lower limiting column 36 is connected with the lower end of the laminated plate 34, the limiting assembly is formed by stacking the upper limiting column 35 and the lower limiting column 36 which are arranged on two adjacent laminated plates 34, and the upper end of the upper limiting column 35 arranged above the laminated plate 34 positioned below is connected with the lower limiting column 36 arranged below the laminated plate 34 positioned above; the vertical section of the upper limiting column 35 is concave, the vertical section of the lower limiting column 36 is convex matched with the upper limiting column 35, and the outer side of the lower limiting column 36 is provided with a spring 38 in a nested manner; the vertical section of the rubber elastic column 33 is U-shaped, and one side of the rubber elastic column 33 with the larger inner diameter is connected with the rubber lamination 31; a rubber gasket for preventing the rubber elastic column 33 from being in hard contact with the laminated plate 34 is installed on the inner wall of the rubber elastic column installation groove 37; the energy-absorbing damping component comprises a shell 51, an energy-absorbing composite material 52 formed by compounding a porous nano material and matrix liquid, and a solid shaft 53, wherein the solid shaft 53 is arranged in the middle of the inner side of the shell 51, and the energy-absorbing composite material 52 is filled between the shell 51 and the solid shaft 53; the housing 51 and the solid shaft 53 are both of shape memory alloy; the matrix fluid is gelatin, the porous nano material is graphite, and the mass ratio of the graphite to the gelatin is 1: (2-4).
In conclusion, the rubber elastic columns which are mutually stacked are arranged between two adjacent groups of rubber laminates of the modified high-damping composite material rubber support, so that the elastic effect between the rubber laminates is increased, the damping characteristic of the rubber support is improved, the limiting components are arranged between the laminates, the rubber is prevented from being damaged due to excessive extrusion through the limiting action between the upper limiting column and the lower limiting column, the spring is arranged between the upper limiting column and the lower limiting column, the elastic effect between the laminates is further enhanced, so that the damping characteristic of the rubber support is improved, the energy-absorbing damping components are adopted to replace lead cores, and the environmental pollution caused by the lead cores is avoided.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a modified high damping combined material rubber support which characterized in that: the rubber laminated bearing comprises an upper connecting plate, a lower connecting plate, a rubber laminated bearing component and an energy-absorbing damping component, wherein the middle part of the rubber laminated bearing component is provided with a through hole which penetrates through the rubber laminated bearing component from top to bottom, the energy-absorbing damping component is arranged in the through hole, the upper connecting plate is arranged at the upper end of the rubber laminated bearing component, the lower connecting plate is arranged at the lower end of the rubber laminated bearing component, the rubber laminated bearing component comprises a plurality of rubber laminates and laminated plates, the rubber laminated bearing component is formed by alternately stacking the plurality of rubber laminates and the plurality of laminated plates from top to bottom, rubber elastic columns are uniformly arranged on the upper end surface and the lower end surface of each rubber laminate, the rubber elastic columns and the rubber laminates are integrally formed, the laminated plates are provided with rubber elastic column mounting grooves corresponding to the positions of the rubber elastic columns, the rubber elastic columns are arranged in the rubber elastic column mounting grooves, two groups of rubber elastic columns are symmetrically stacked up and down in each group of rubber elastic column mounting grooves;
A limiting component mounting groove is formed between two adjacent groups of rubber elastic columns in the same row, a limiting component is mounted in the limiting component mounting groove, and the limiting component is connected with the laminated plate;
the limiting assembly comprises an upper limiting column and a lower limiting column, the upper limiting column is connected with the upper end of the laminated plate, the lower limiting column is connected with the lower end of the laminated plate, the limiting assembly is formed by stacking the upper limiting column and the lower limiting column which are arranged on two adjacent laminated plates, and the upper end of the upper limiting column which is arranged above the laminated plate positioned below is connected with the lower limiting column which is arranged below the laminated plate positioned above;
the vertical section of the upper limiting column is concave, the vertical section of the lower limiting column is convex matched with the upper limiting column, and a spring is arranged on the outer side of the lower limiting column in a nested mode.
2. The modified high-damping composite rubber bearing according to claim 1, wherein: the vertical section of the rubber elastic column is U-shaped, and one side of the rubber elastic column with the larger inner diameter is connected with the rubber lamination.
3. The modified high-damping composite rubber bearing according to claim 1, wherein: and a rubber gasket for preventing the rubber elastic column from being in rigid contact with the laminated plate is arranged on the inner wall of the rubber elastic column mounting groove.
4. The modified high-damping composite rubber bearing according to claim 1, wherein: the energy-absorbing damping assembly comprises a shell, an energy-absorbing composite material and a solid shaft, wherein the energy-absorbing composite material is formed by compounding a porous nano material and a matrix liquid, the solid shaft is arranged in the middle of the inner side of the shell, and the energy-absorbing composite material is filled between the shell and the solid shaft.
5. The modified high damping composite rubber mount of claim 4, wherein: the housing and the solid shaft are both made of shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680658.7A CN111945553B (en) | 2020-07-15 | 2020-07-15 | Modified high-damping composite material rubber support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680658.7A CN111945553B (en) | 2020-07-15 | 2020-07-15 | Modified high-damping composite material rubber support |
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| Publication Number | Publication Date |
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| CN111945553A CN111945553A (en) | 2020-11-17 |
| CN111945553B true CN111945553B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010680658.7A Active CN111945553B (en) | 2020-07-15 | 2020-07-15 | Modified high-damping composite material rubber support |
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Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3106300B2 (en) * | 1996-12-11 | 2000-11-06 | 株式会社カイモン | Elastic bearing for structure and method of manufacturing the same |
| KR20070096135A (en) * | 2006-01-25 | 2007-10-02 | 주식회사 부흥시스템 | Cushion support for bridge |
| CN202989766U (en) * | 2012-10-24 | 2013-06-12 | 长安大学 | Lead core high-damping rubber seismic mitigation and absorption support seat |
| CN203144887U (en) * | 2013-04-14 | 2013-08-21 | 衡水中铁建工程橡胶有限责任公司 | Structure enhanced type rubber support |
| CN205152782U (en) * | 2015-12-03 | 2016-04-13 | 核工业西南勘察设计研究院有限公司 | High -damp rubber support |
| CN205907816U (en) * | 2016-08-15 | 2017-01-25 | 西安达盛隔震技术有限公司 | Environment -friendly high damping rubber bearing |
| CN106368485B (en) * | 2016-10-26 | 2019-03-15 | 南京工业大学 | High-damping rubber elastic sliding isolation bearing adopting flexible limiting |
| CN106894331B (en) * | 2017-04-25 | 2018-11-16 | 沈阳建筑大学 | A kind of energy consumption limit support of included Viscous fluid damper |
| CN207048057U (en) * | 2017-05-23 | 2018-02-27 | 长安大学 | A kind of high-damping rubber shock isolating pedestal |
| CN207314573U (en) * | 2017-09-06 | 2018-05-04 | 长安大学 | A kind of spacing-type high-damping rubber shock isolating pedestal |
| CN108385845A (en) * | 2018-02-26 | 2018-08-10 | 江苏大学 | A kind of Novel high-damping variation rigidity extrusion pressing type earthquake isolating equipment |
| CN109162362A (en) * | 2018-10-25 | 2019-01-08 | 安徽建筑大学 | Elastic tensile rubber shock insulation support |
| CN109577179B (en) * | 2018-11-28 | 2020-11-10 | 江苏科技大学 | Tensile shock insulation support |
| CN110965463A (en) * | 2019-12-19 | 2020-04-07 | 安徽微威减震降噪技术研究院 | Rubber shock insulation support |
| CN110901100B (en) * | 2020-01-21 | 2020-08-14 | 北京思达维科技有限公司 | Method for manufacturing vibration damping road pad |
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2020
- 2020-07-15 CN CN202010680658.7A patent/CN111945553B/en active Active
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Denomination of invention: Modified high damping composite rubber bearings Effective date of registration: 20231219 Granted publication date: 20220531 Pledgee: Huishang Bank Co.,Ltd. Yixian Sub branch Pledgor: HUANGSHAN SHANGYI RUBBER AND PLASTIC PRODUCTS Co.,Ltd. Registration number: Y2023980072621 |
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