CN219863669U - Fireproof structure capable of preventing high-temperature cracking - Google Patents
Fireproof structure capable of preventing high-temperature cracking Download PDFInfo
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- CN219863669U CN219863669U CN202320290257.XU CN202320290257U CN219863669U CN 219863669 U CN219863669 U CN 219863669U CN 202320290257 U CN202320290257 U CN 202320290257U CN 219863669 U CN219863669 U CN 219863669U
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- fireproof layer
- fireproof
- fire
- foam concrete
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- 238000005336 cracking Methods 0.000 title claims abstract description 17
- 239000011381 foam concrete Substances 0.000 claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 229920002748 Basalt fiber Polymers 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 16
- 230000009970 fire resistant effect Effects 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 11
- 239000011490 mineral wool Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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- Building Environments (AREA)
Abstract
The utility model discloses a fireproof structure capable of preventing high-temperature cracking, which comprises a central component, and a first fireproof layer, a second fireproof layer and a third fireproof layer which are coaxially arranged in sequence from inside to outside, wherein the first fireproof layer is coated outside the central component in a whole length manner; the third fireproof layer is formed by connecting a plurality of third fireproof layer units which are sequentially arranged axially and connected end to end, and a first flexible cushion layer is arranged between every two adjacent third fireproof layer units; the third fireproof layer unit is of a split type structure and is formed by enclosing and splicing a plurality of foam concrete precast blocks which are distributed at intervals along the circumferential direction of the outer periphery of the second fireproof layer. The beneficial effects of the utility model are as follows: the third fireproof layer of the fireproof structure comprises a plurality of third fireproof layer units which are axially arranged, and two adjacent third fireproof layer units are detachably connected through pins; each third fireproof layer unit comprises a plurality of foam concrete precast blocks which are circumferentially arranged, and the design can effectively adapt to the expansion deformation of the foam concrete precast blocks in the circumferential direction and the axial direction and can effectively prevent cracking.
Description
Technical Field
The utility model relates to the technical field of fire protection, in particular to a fireproof structure capable of preventing high-temperature cracking.
Background
The steel has excellent engineering characteristics, so that the steel is widely used in the fields of building engineering and the like; however, steel materials have poor fire resistance and often require a fire protection treatment. At present, a common fire-proof treatment measure for the steel structure is to coat fire-proof paint on the surface of the steel structure. However, most of the existing fireproof coatings are organic materials, and problems such as dissolution, decomposition, degradation and aging gradually occur along with the time, so that the performance of steel is affected, and the environment is polluted. The foam concrete has the characteristics of light weight, heat preservation, heat insulation, fire resistance, no toxicity and the like, has wide application in the fields of fire prevention and the like, and also relates to the related content of utilizing the foam concrete as a steel structure fire-proof material in the prior art. However, when inorganic materials such as foam concrete are used as fireproof treatment materials for steel structures, the problem of expansion cracking under the high-temperature environment of the materials is not considered, the materials are directly coated on the outer surface of the steel member, and the materials are easy to crack and damage under the high-temperature condition, so that the purpose of better protecting the steel structures is difficult to achieve.
Accordingly, there is a need for improvements over the prior art.
Disclosure of Invention
The utility model aims to provide a fireproof structure which has a simple structure and can prevent high-temperature cracking, aiming at the defects of the prior art.
The utility model adopts the technical scheme that: the fireproof structure comprises a central member, and a first fireproof layer, a second fireproof layer and a third fireproof layer which are coaxially arranged in sequence from inside to outside, wherein the first fireproof layer is coated outside the central member in a whole length manner;
the third fireproof layer is formed by connecting a plurality of third fireproof layer units which are sequentially arranged axially and connected end to end, and a first flexible cushion layer is arranged between every two adjacent third fireproof layer units;
the third fireproof layer unit is of a split type structure and is formed by enclosing and splicing a plurality of foam concrete precast blocks which are distributed at intervals along the circumferential direction of the outer periphery of the second fireproof layer.
According to the scheme, in the same third fireproof layer unit, two foam concrete precast blocks adjacent in the circumferential direction are connected through a first pin; first grooves corresponding to the positions are respectively formed in the two circumferential sides of the foam concrete precast block, and the length direction of the first grooves is the same as the length direction of the central member; the first grooves of two adjacent foam concrete precast blocks are spliced to form a first clamping groove matched with the first pin.
According to the scheme, in the same third fireproof layer unit, second flexible cushion layers are respectively arranged on the contact surface between two circumferentially adjacent foam concrete precast blocks and the wall surface of the clamping groove.
According to the scheme, two adjacent third fireproof layer units are connected through the second pin; second grooves corresponding to the positions are formed in the two axial ends of each foam concrete precast block of the third fireproof layer unit, second grooves of two foam concrete precast blocks adjacent to each other in the axial direction form second clamping grooves matched with second pins, and the second pins are inserted into the second clamping grooves; the first flexible cushion layer is arranged between the axially adjacent foam concrete precast blocks.
According to the scheme, in the two adjacent third fireproof layer units, the third flexible cushion layers are respectively arranged on the contact surface between the two axially adjacent foam concrete precast blocks and the groove surface of the second clamping groove, namely, the third flexible cushion layers are respectively arranged between the second pins and the second clamping grooves.
According to the scheme, the first fireproof layer is formed by winding a plurality of layers of fireproof rock wool on the central member in a through length manner; the thickness of the first fireproof layer is 4-6cm.
According to the scheme, the second fireproof layer is formed by winding a plurality of basalt fiber cloth through lengths on the first fireproof layer; the thickness of the second fireproof layer is 5-6mm.
According to the scheme, the central component is a steel component, and can be a round steel pipe or a square steel pipe.
According to the scheme, the second pin is I-shaped.
According to the scheme, the first flexible cushion layer is made of fireproof rock wool; the second flexible cushion layer and the third flexible cushion layer are formed by laminating and bonding a plurality of layers of basalt fiber cloth.
Compared with the prior art, the utility model discloses a beneficial effect does:
the third fireproof layer of the fireproof structure comprises a plurality of third fireproof layer units which are axially arranged, two adjacent third fireproof layer units are detachably connected through pins, and the connecting surfaces of the two third fireproof layer units are provided with flexible cushion layers, so that the design can adapt to the axial expansion deformation of the foam concrete precast block, and compared with an integral foam concrete layer, the foam concrete precast block can effectively prevent cracking; each third fireproof layer unit comprises a plurality of circumferentially arranged foam concrete precast blocks, two adjacent foam concrete precast blocks are connected through pins, and a flexible cushion layer is arranged on the connecting surface of each foam concrete precast block and the adjacent foam concrete precast blocks, so that the foam concrete precast blocks can effectively adapt to the circumferential expansion deformation of the foam concrete precast blocks, and cracking is further prevented. The utility model has simple structure and reasonable design.
Drawings
Fig. 1 is a schematic overall structure of the first embodiment.
Fig. 2 is an enlarged view at C of fig. 1.
Fig. 3 is a cross-sectional view A-A of fig. 1.
Fig. 4 is an enlarged view of fig. 3 at E.
Fig. 5 is a schematic structural diagram of the second embodiment.
Fig. 6 is an enlarged view of fig. 5 at D.
Fig. 7 is a B-B cross-sectional view of fig. 5.
Fig. 8 is an enlarged view of F in fig. 7.
FIG. 9 is an axial cross-sectional view of a second third flame retardant layer unit of an embodiment
Wherein: 1. a central member; 2. a first fire-blocking layer; 3. a second fire-blocking layer; 4. foam concrete precast blocks; 5. a first pin; 6. a fourth flexible mat; 7. a second flexible cushion layer; 8. a second pin; 9. a third flexible cushion layer; 10. a third fireproof layer unit; 11. a first flexible mat.
Detailed Description
For a better understanding of the present utility model, the present utility model is further described below with reference to the drawings and specific examples.
The fireproof structure capable of preventing high-temperature cracking comprises a central member 1, and a first fireproof layer 2, a second fireproof layer 3 and a third fireproof layer which are coaxially arranged in sequence from inside to outside, wherein the first fireproof layer 2 is coated on the outside of the central member 1 in a through length mode, and the second fireproof layer 3 is arranged on the outside of the first fireproof layer 2 in a through length mode; the third fireproof layer is formed by connecting a plurality of third fireproof layer units 10 which are axially arranged in sequence and are connected end to end, and a first flexible cushion layer 11 is arranged between two adjacent third fireproof layer units 10; the third fireproof layer unit 10 is of a split type structure and is formed by surrounding and splicing a plurality of foam concrete precast blocks 4 distributed at intervals along the circumferential direction of the outer circumferential surface of the second fireproof layer 3.
In the present utility model, the first flexible cushion layer 11 is made of fireproof rock wool.
Preferably, in the same third fireproof layer unit 10, two foam concrete precast blocks 4 adjacent in the circumferential direction are connected by a first pin 5. Specifically, first grooves corresponding to the positions are respectively formed in two circumferential sides of the foam concrete precast block 4, and the length direction of the first grooves is the same as the length direction of the central member 1; the first grooves of two adjacent foam concrete precast blocks 4 are spliced to form a first clamping groove matched with the first pin 5.
Preferably, in the same third fireproof layer unit 10, the second flexible cushion 7 is respectively arranged on the contact surface between two adjacent foam concrete precast blocks 4 in the circumferential direction and on the wall surface of the clamping groove. In the utility model, the second flexible cushion layer 7 is formed by laminating and bonding a plurality of layers of basalt fiber cloth.
Preferably, two adjacent third fireproof layer units 10 are connected by a second pin 8. Specifically, second grooves corresponding to the positions are formed at the two axial ends of each foam concrete precast block 4 of the third fireproof layer unit 10, second grooves of two foam concrete precast blocks 4 adjacent to each other in the axial direction form second clamping grooves matched with second pins 8, and the second pins 8 are inserted into the second clamping grooves to realize connection of the two foam concrete precast blocks 4 adjacent to each other in the axial direction; the first flexible cushion layer 11 is arranged between the axially adjacent foam concrete precast blocks 4.
Preferably, in the two adjacent third fireproof layer units 10, the third flexible cushion layers 9 are respectively arranged on the contact surface between the two axially adjacent foam concrete precast blocks 4 and the groove surface of the second clamping groove, that is, the third flexible cushion layers 9 are respectively arranged between the second pins 8 and the second clamping groove. In the utility model, the third flexible cushion layer 9 is formed by laminating and bonding a plurality of layers of basalt fiber cloth.
In the utility model, the first pin 5 is rod-shaped and is made of high-temperature resistant elastic material (such as PPS plastic) or iron material; the section of the second pin 8 is I-shaped; the surfaces of the two pins are respectively provided with a fourth flexible cushion layer 6, and the fourth flexible cushion layer 6 is formed by winding a plurality of layers of basalt fiber cloth on the pins.
Preferably, the first fireproof layer 2 is formed by winding a plurality of layers of fireproof rock wool on the central member 1 in a through-length manner; the thickness of the first fireproof layer 2 is 4-6cm.
Preferably, the second fireproof layer 3 is formed by winding a plurality of basalt fiber cloth lengths on the first fireproof layer 2; the thickness of the second fireproof layer 3 is 5-6mm.
Preferably, the thickness of the third fireproof layer is 5-10 cm.
Preferably, the central member 1 is a steel member, which may be a round steel tube or a square steel tube.
Example 1
As shown in fig. 1 and 3, a fire-proof structure capable of preventing high-temperature cracks includes a central member 1, and a first fire-proof layer 2, a second fire-proof layer 3 and a third fire-proof layer disposed sequentially from inside to outside; the central member 1 is a steel member, in particular a round steel pipe; the third fire-resistant layer is connected by a plurality of third fire-resistant layer units 10 which are axially arranged and are connected end to end in sequence. The manufacturing method comprises the following steps:
1. winding and bonding fireproof rock wool on the central member 1 to form a first fireproof layer 2;
2. winding basalt fiber cloth along the outer surface of the first fireproof layer 2 for a plurality of layers, and then adhering and fixing the basalt fiber cloth by using a high-temperature-resistant adhesive to form a second fireproof layer 3;
3. a third fireproof layer is arranged outside the second fireproof layer 3, the third fireproof layer comprises three third fireproof layer units 10, and each third fireproof layer unit 10 is formed by sequentially enclosing and splicing four foam concrete precast blocks 4 with the same structure and size; the inner peripheral surface and the outer peripheral surface of the foam concrete precast block 4 are cambered surfaces, wherein the inner peripheral surface is contacted with the outer surface of the second fireproof layer 3, and the inner peripheral surface of the foam concrete is ensured to be under certain pressure; the circumferential side surfaces of the foam concrete precast block 4 are planes, and first grooves corresponding to the positions are respectively formed in the two circumferential side surfaces of the foam concrete precast block, and the two first grooves are spliced to form a first clamping groove; bonding a plurality of layers of basalt fiber cloth on the contact surface of two adjacent foam concrete precast blocks 4 in the circumferential direction and the wall surface of the first clamping groove to form a second flexible cushion layer 7; after the surface of the first pin 5 is coated with a fourth flexible cushion layer 6 formed by a plurality of layers of basalt fiber cloth, the fourth flexible cushion layer is inserted into the first clamping groove, and all foam concrete precast blocks 4 of the same third fireproof layer unit 10 are connected to form a whole (shown in figure 4); the first pins 5 have gaps in the circumferential direction to accommodate the circumferential expansion deformation of each precast foam concrete block 4 at high temperature. According to actual needs, the number of the third fireproof layer units 10 is determined, and after the first flexible cushion layers 11 are arranged at the connecting positions between two adjacent third fireproof layer units 10, the third fireproof layer units 10 are connected through the second pins 8 in sequence to form a whole (shown in fig. 2).
Example two
As shown in fig. 5 and 7, a fire-proof structure capable of preventing high temperature cracking includes a central member 1, and a first fire-proof layer 2, a second fire-proof layer 3 and a third fire-proof layer disposed sequentially from inside to outside; the third fire-resistant layer is connected by a plurality of third fire-resistant layer units 10 which are axially arranged and are connected end to end in sequence. The central member 1 is a steel member, in particular a square steel tube. The manufacturing method comprises the following steps:
1. winding and bonding fireproof rock wool on the central member 1 to form a first fireproof layer 2;
2. winding basalt fiber cloth along the outer surface of the first fireproof layer 2 for a plurality of layers, and then adhering and fixing the basalt fiber cloth by using a high-temperature-resistant adhesive to form a second fireproof layer 3;
3. a third fireproof layer is arranged outside the second fireproof layer 3, and comprises three third fireproof layer units 10, as shown in fig. 9, each third fireproof layer is formed by sequentially surrounding and splicing four foam concrete precast blocks 4; the foam concrete precast blocks 4 have the same thickness and isosceles trapezoid structures in cross section; the trapezoid sizes of the cross sections of the two opposite foam concrete precast blocks 4 are the same, and the cross sections of the two adjacent foam concrete precast blocks 4 are different in size (the width of the bottom edge and the width of the top edge are different); first grooves corresponding to the positions are formed in two sides of each foam concrete precast block 4, and the two first grooves are spliced to form a first clamping groove; bonding a plurality of layers of basalt fiber cloth on the contact surface and the groove wall surface of two adjacent foam concrete precast blocks 4 to form a second flexible cushion layer 7; after the surface of the first pin 5 is coated with a fourth flexible cushion layer 6 formed by a plurality of layers of basalt fiber cloth, the fourth flexible cushion layer is inserted into the second clamping groove, and each foam concrete precast block 4 is connected to form a whole (shown in figure 8); the first pins 5 have gaps in the circumferential direction to accommodate expansion deformation of each precast foam concrete segment 4 at high temperature. According to actual needs, the number of the third fireproof layer units 10 is determined, and after the first flexible cushion layers 11 are arranged at the connecting positions between two adjacent third fireproof layer units 10, the third fireproof layer units 10 are connected through the second pins 8 in sequence to form a whole (shown in fig. 6).
According to the utility model, radial pressure is applied to the extrusion of the first fireproof layer 2 and the second fireproof layer 3 through the spliced foam concrete precast block 4, and meanwhile, the foam concrete precast block 4, the steel structure and the inner fireproof layer form an integral body which is not easy to loose under the reverse action, so that a good fireproof effect is achieved.
What is not described in detail in this specification is prior art known to those skilled in the art.
Finally, it should be noted that the foregoing is merely a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and although the present utility model has been described in detail with reference to the embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but any modifications, equivalents, improvements or changes thereof may be made without departing from the spirit and principle of the present utility model.
Claims (10)
1. The fireproof structure capable of preventing high-temperature cracking is characterized by comprising a central component, and a first fireproof layer, a second fireproof layer and a third fireproof layer which are coaxially arranged in sequence from inside to outside, wherein the first fireproof layer is coated outside the central component in a whole length manner; the third fireproof layer is formed by connecting a plurality of third fireproof layer units which are sequentially arranged axially and connected end to end, and a first flexible cushion layer is arranged between every two adjacent third fireproof layer units; the third fireproof layer unit is of a split type structure and is formed by enclosing and splicing a plurality of foam concrete precast blocks which are distributed at intervals along the circumferential direction of the outer periphery of the second fireproof layer.
2. The fire-resistant structure for preventing high temperature cracks according to claim 1, wherein two foam concrete precast blocks adjacent in the circumferential direction are connected by a first pin in the same third fire-resistant layer unit; first grooves corresponding to the positions are respectively formed in the two circumferential sides of the foam concrete precast block, and the length direction of the first grooves is the same as the length direction of the central member; the first grooves of two adjacent foam concrete precast blocks are spliced to form a first clamping groove matched with the first pin.
3. The fire-resistant structure according to claim 2, wherein the second flexible cushion layer is provided on the contact surface between two foam concrete precast blocks adjacent to each other in the circumferential direction and on the wall surface of the clamping groove in the same third fire-resistant layer unit.
4. A fire protection structure for preventing high temperature cracking according to claim 3, wherein adjacent third fire protection layer unit phases are connected by a second pin; second grooves corresponding to the positions are formed in the two axial ends of each foam concrete precast block in the third fireproof layer unit, second grooves of two foam concrete precast blocks adjacent to each other in the axial direction form second clamping grooves matched with second pins, and the second pins are inserted into the second clamping grooves; the first flexible cushion layer is arranged between the axially adjacent foam concrete precast blocks.
5. The fire-resistant structure according to claim 4, wherein the third flexible cushion layer is disposed on the contact surface between two axially adjacent precast foam concrete blocks and the groove surface of the second clamping groove, respectively, in the adjacent two third fire-resistant layer units, that is, the third flexible cushion layer is disposed between the second pin and the second clamping groove.
6. The fire-resistant structure for preventing high temperature cracking according to claim 1, wherein said first fire-resistant layer is formed by winding a plurality of layers of fire-resistant rock wool around a central member; the thickness of the first fireproof layer is 4-6cm.
7. The fire-resistant structure for preventing high temperature cracking according to claim 1, wherein said second fire-resistant layer is formed by winding a plurality of basalt fiber cloth layers on the first fire-resistant layer; the thickness of the second fireproof layer is 5-6 mm; the thickness of the third fireproof layer is 5-10 cm.
8. The fire protection structure for preventing high temperature cracks according to claim 1, wherein the central member is a steel member, which may be a round steel pipe or a square steel pipe.
9. The fire protection structure for preventing high temperature cracking according to claim 4, wherein said second pin is I-shaped.
10. The fire protection structure capable of preventing high temperature cracking according to claim 5, wherein the first flexible cushion layer is made of fireproof rock wool; the second flexible cushion layer and the third flexible cushion layer are formed by laminating and bonding a plurality of layers of basalt fiber cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320290257.XU CN219863669U (en) | 2023-02-22 | 2023-02-22 | Fireproof structure capable of preventing high-temperature cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320290257.XU CN219863669U (en) | 2023-02-22 | 2023-02-22 | Fireproof structure capable of preventing high-temperature cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219863669U true CN219863669U (en) | 2023-10-20 |
Family
ID=88323845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320290257.XU Active CN219863669U (en) | 2023-02-22 | 2023-02-22 | Fireproof structure capable of preventing high-temperature cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219863669U (en) |
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2023
- 2023-02-22 CN CN202320290257.XU patent/CN219863669U/en active Active
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