CN221250093U - Multifunctional fireproof heat-insulation board with good flame retardant effect - Google Patents
Multifunctional fireproof heat-insulation board with good flame retardant effectInfo
- Publication number
- CN221250093U CN221250093U CN202322537067.6U CN202322537067U CN221250093U CN 221250093 U CN221250093 U CN 221250093U CN 202322537067 U CN202322537067 U CN 202322537067U CN 221250093 U CN221250093 U CN 221250093U
- Authority
- CN
- China
- Prior art keywords
- auxiliary
- installation
- insulation board
- retardant effect
- good flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 61
- 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 title claims abstract description 47
- 230000000694 effects Effects 0.000 title claims abstract description 42
- 238000009413 insulation Methods 0.000 title claims description 43
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 54
- 230000002265 prevention Effects 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 239000006260 foam Substances 0.000 claims description 26
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 abstract description 10
- 238000000429 assembly Methods 0.000 abstract description 10
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a multifunctional fireproof heat-insulating plate with good flame-retardant effect, which comprises a fireproof heat-insulating plate body, wherein mounting assemblies are mounted on two sides of the fireproof heat-insulating plate body, an auxiliary assembly is connected to the inner wall of the mounting assembly, the multifunctional fireproof heat-insulating plate with good flame-retardant effect is conveniently mounted and fixed through the mounting assemblies arranged on the fireproof heat-insulating plate, the mounting efficiency of workers is improved, the auxiliary assemblies arranged on the mounting assemblies can assist and fix the mounting assemblies, the shaking condition among the mounting assemblies is reduced, the stability among the multifunctional fireproof heat-insulating plates with good flame-retardant effect is improved, the stability of the multifunctional fireproof heat-insulating plate with good flame-retardant effect and the mounting position is improved through the reinforcing assemblies arranged on the fireproof heat-insulating plate body, the compression resistance of the multifunctional fireproof heat-insulating plate with good flame-retardant effect is improved, the heat-insulating plate can also effectively insulate heat air conduction, and good heat-insulating effect is provided.
Description
Technical Field
The utility model relates to the technical field of fireproof heat-insulating boards, in particular to a multifunctional fireproof heat-insulating board with good flame retardant effect.
Background
The fireproof heat-insulating board belongs to an inorganic foaming heat-insulating material, has excellent fireproof performance, durability and good interface adhesion, and aims to better prevent fire and flame for the fireproof heat-insulating board, so that the multifunctional fireproof heat-insulating board with good flame retardant effect is provided.
Through retrieving as chinese patent publication No. CN 212896892U, a fireproof insulation board is disclosed, the fireproof insulation board includes a class a fireproof insulation board body, a plurality of wire net piece and a plurality of spacing part, one side of a class a fireproof insulation board body has a plurality of recess that is arranged in holding anchor assembly middle anchor disk, a plurality of wire net piece and a plurality of spacing part all set up in the class a fireproof insulation board body, the both ends of spacing part support respectively in adjacent two wire net piece, and a plurality of wire net piece pass through a plurality of spacing part mutual isolation and follow the range upon range of setting up in the class a fireproof insulation board body of thickness direction of a fireproof insulation board body. The steel wire meshes are supported and isolated through the limiting parts, so that the positions of a plurality of steel wire meshes in the A-level fireproof heat-insulating plate body are accurately limited; meanwhile, after the anchoring piece is installed, a bulge is not formed on the plate surface, so that the construction effect of the outer side facing layer is further optimized.
However, the device has a certain defect in actual use, and the effect of the construction of the outer protective layer can be further optimized in use, but the fireproof insulation boards are in shaking condition during installation, so that the stability of the fireproof insulation boards is poor.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of utility model
(One) solving the technical problems
Aiming at the defects of the prior art, the utility model provides the multifunctional fireproof insulation board with good flame retardant effect, which has the advantage of improving the stability when the multifunctional fireproof insulation board with good flame retardant effect is installed, thereby solving the problems in the prior art.
(II) technical scheme
In order to achieve the advantage of improving stability when the multifunctional fireproof insulation board with good flame retardant effect is installed, the utility model adopts the following specific technical scheme:
The multifunctional fireproof heat-insulating plate with the good flame retardant effect comprises a fireproof heat-insulating plate body, wherein installation assemblies are installed on two sides of the fireproof heat-insulating plate body, an auxiliary assembly is connected to the inner wall of the installation assemblies and comprises a plurality of auxiliary holes formed in the inner wall of the installation assemblies, telescopic rods are arranged on the inner walls of the plurality of auxiliary holes, auxiliary blocks are arranged at the telescopic ends of the telescopic rods, auxiliary springs connected with the surfaces of the telescopic rods are connected to the side surfaces of the auxiliary blocks, and the connecting ends of the auxiliary springs are connected with the inner walls of the auxiliary holes;
The inner wall of the fireproof heat-insulating plate body is provided with a reinforcing component close to the mounting component, the outer surface of the fireproof heat-insulating plate body and the surface of the mounting component are coated with a protective component, the protective component comprises a waterproof coating connected with the outer surface of the fireproof heat-insulating plate body and the surface of the mounting component, the surface of the waterproof coating is coated with a flame-retardant coating, and the surface of the flame-retardant coating is coated with a corrosion-resistant coating.
Further, in order to install the multi-functional fire prevention heated board that the flame retardant efficiency is good fixedly, improve the stability of the multi-functional fire prevention heated board that the flame retardant efficiency is good, the installation component includes wherein both sides difference fixed connection's with the fire prevention heated board body installing frame, installing piece, one of them side fixedly connected with a plurality of erection columns of fire prevention heated board body, a plurality of mounting holes have been seted up to one of them side of the fire prevention heated board body, and the inner wall and the erection column position of a plurality of mounting holes are relative.
Further, in order to improve the fastness of the effectual multi-functional fire prevention heated board of fire-retardant, consolidate the subassembly and including the reinforcement groove of fire prevention heated board side offering, the inner wall in reinforcement groove wears to establish and is connected with a plurality of fixed columns, a plurality of fixed columns are close to the installation piece, the installation frame wears to establish and is connected with phenolic foam baffle one, phenolic foam baffle one's top joint has the reinforcement frame, the top joint of reinforcement frame has phenolic foam baffle two, the reinforcement frame, phenolic foam baffle one is located the inner wall in reinforcement groove.
Further, in order to assist the fixing of the multifunctional fireproof insulation board with good flame retardant effect, pawls are distributed equidistantly on the lower surfaces of the fixing columns and the surfaces of the mounting columns, and the side faces of the pawls are far away from the phenolic foam partition board II.
Further, in order to improve the leakproofness of the effectual multi-functional fire prevention heated board of fire-retardant, the pawl wears to establish in the top of a plurality of fixed columns to be connected with the auxiliary rod, and the top fixedly connected with of auxiliary rod is sealed.
Further, the lower part of the sealing cover is clamped with the inner wall of the reinforcing groove, and the lower part of the sealing cover is connected with the upper part of the phenolic foam partition board II.
Further, the upper parts of the fixing columns are matched with the auxiliary rods.
(III) beneficial effects
Compared with the prior art, the utility model has the following beneficial effects:
(1) Through the installation component that sets up at the fire prevention heated board, be convenient for install fixedly to the effectual multi-functional fire prevention heated board of fire-retardant, be favorable to improving staff's installation effectiveness, the auxiliary assembly who sets up at the installation component simultaneously can assist fixedly to the installation component, appears rocking the condition between being favorable to reducing a plurality of effectual multi-functional fire prevention heated boards of fire-retardant when installing, improves the stability between the effectual multi-functional fire prevention heated board of a plurality of fire-retardant.
(2) Through the reinforcement component that sets up at the fire prevention heated board body, not only can improve the stability of fire-retardant effectual multi-functional fire prevention heated board and installation department, be favorable to improving the crushing resistance of fire-retardant effectual multi-functional fire prevention heated board, can also effectively isolate cold and hot air conduction, provide good heat preservation effect, energy saving and emission reduction, the protection component who sets up at fire prevention heated board body and installation component simultaneously, the multi-functional fire prevention heated board that not only can improve the fire-retardant effect has fire-retardant fire prevention, the multi-functional fire prevention heated board that can also improve the fire-retardant effect has waterproof corrosion-resistant effect, be favorable to better protection fire-retardant effect good multi-functional fire prevention heated board, and life.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a multifunctional fireproof insulation board with good flame retardant effect according to an embodiment of the utility model;
fig. 2 is a schematic bottom view of a multifunctional fireproof insulation board with good flame retardant effect according to an embodiment of the utility model;
FIG. 3 is a schematic structural view of a reinforcing component of a multifunctional fireproof insulation board with good flame retardant effect according to an embodiment of the utility model;
FIG. 4 is a schematic view of a protective component of a multifunctional fireproof insulation board with good flame retardant effect according to an embodiment of the utility model;
Fig. 5 is a schematic diagram of an auxiliary assembly of a multifunctional fireproof insulation board with good flame retardant effect according to an embodiment of the utility model.
In the figure:
1. A fireproof heat-insulating plate body; 2. a mounting assembly; 201. a mounting frame; 202. a mounting block; 203. a mounting column; 3. an auxiliary component; 301. a telescopic rod; 302. an auxiliary block; 303. an auxiliary spring; 4. a reinforcement assembly; 401. fixing the column; 402. phenolic foam partition board I; 403. a reinforcing frame; 404. phenolic foam partition boards II; 5. a protective assembly; 501. a waterproof coating; 502. a flame retardant coating; 503. a corrosion-resistant coating; 6. a pawl; 7. an auxiliary lever; 8. sealing cover.
Detailed Description
For the purpose of further illustrating the concepts of the utility model, there is provided in the drawings, which are a part of the disclosure of the present utility model and are primarily intended to illustrate embodiments and, together with the description, serve to explain the principles of the embodiments, with reference to these, it will be understood by those skilled in the art that other possible embodiments and advantages of the utility model may be made, the components in the drawings not being drawn to scale, and that like reference numerals will generally be used to designate like components.
As shown in fig. 1-5, the utility model provides a technical scheme of a multifunctional fireproof insulation board with good flame retardant effect: the multifunctional fireproof heat-insulating plate with good flame retardant effect comprises a fireproof heat-insulating plate body 1, wherein installation components 2 are installed on two sides of the fireproof heat-insulating plate body 1, each installation component 2 comprises an installation frame 201 and an installation block 202 which are respectively and fixedly connected with two sides of the fireproof heat-insulating plate body 1, the installation blocks 202 are connected with the inner wall of the other installation frame 201 during installation, four installation columns 203 are fixedly connected with one side of the fireproof heat-insulating plate body 1, four installation holes are formed in one side of the fireproof heat-insulating plate body 1, and the inner walls of the four installation holes are opposite to the installation columns 203;
The inner wall of installation component 2 is connected with auxiliary assembly 3, auxiliary assembly 3 includes six auxiliary holes that installation component 2 inner wall was seted up, and six auxiliary holes that installation component 2 inner wall was seted up for the inner wall of installing frame 201, the inner wall in six auxiliary holes is provided with telescopic link 301, and telescopic link 301 and auxiliary hole are the slope setting, the flexible end of telescopic link 301 is provided with auxiliary block 302, and auxiliary block 302 and the installation piece 202 joint of being connected, the side of auxiliary block 302 is connected with the auxiliary spring 303 of being connected with telescopic link 301 surface, the link and the inner wall connection in auxiliary hole of auxiliary spring 303.
Specifically, during installation, the staff is with installation piece 202 and another installation frame 201 inner wall connection, and telescopic link 301, auxiliary spring 303 and the auxiliary block 302 that simultaneously set up at installation frame 201 mutually support, are convenient for carry out auxiliary fixation to installation piece 202, are favorable to improving the stability when the effectual multi-functional fire prevention heated board of fire-retardant efficiency installs, are connected the post 203 that sets up fire prevention heated board body 1 with the mounting hole inner wall connection that another fire prevention heated board body 1 offered.
As shown in fig. 1-5, a reinforcing component 4 is arranged on the inner wall of the fireproof insulation board body 1 close to the mounting component 2, the reinforcing component 4 comprises a reinforcing groove formed in the side surface of the fireproof insulation board body 1, four fixing columns 401 with hollow structures are arranged on the inner wall of the reinforcing groove in a penetrating manner, a first phenolic foam partition plate 402 is arranged on the four fixing columns 401 close to the mounting block 202 and the mounting frame 201 in a penetrating manner, a reinforcing frame 403 is clamped above the first phenolic foam partition plate 402, a second phenolic foam partition plate 404 is clamped above the reinforcing frame 403, and the second phenolic foam partition plate 404, the reinforcing frame 403 and the first phenolic foam partition plate 402 are positioned on the inner wall of the reinforcing groove;
The surface of the lower side of four fixed columns 401 and the surface of erection column 203 are provided with equidistance and distribute pawl 6, and phenolic foam baffle two 404 are kept away from to the side of pawl 6, and pawl 6 wears to be connected with auxiliary rod 7 in the top of four fixed columns 401, and the top and the auxiliary rod 7 looks adaptation of four fixed columns 401, the top fixedly connected with sealed lid 8 of auxiliary rod 7, sealed lid 8 and reinforcement inslot wall handing-over are in-service use through sealed sticky, the below and the inner wall joint in reinforcement groove of sealed lid 8, and the below and the phenolic foam baffle two 404 top of sealed lid 8 are connected.
Specifically, during installation, staff is connected phenolic foam baffle two 404, reinforcing frame 403, phenolic foam baffle one 402 in proper order with fixed column 401, then mutually support auxiliary rod 7 and sealed lid 8, make auxiliary rod 7 and fixed column 401 be connected, sealed lid 8 and the joint of reinforcement inslot wall that auxiliary rod 7 set up simultaneously are favorable to improving the compressive resistance of the multi-functional fire prevention heated board that leakproofness and flame retardant efficiency are good, then mutually support fixed column 401 and pawl 6, be convenient for improve the compressive resistance of the multi-functional fire prevention heated board that flame retardant efficiency is good in the fastness of installation department.
As shown in fig. 1-5, the outer surface of the fireproof insulation board body 1 and the surface of the installation component 2 are coated with the protection component 5, the protection component 5 comprises a waterproof coating 501 connected with the outer surface of the fireproof insulation board body 1 and the surface of the installation component 2, the waterproof coating 501 is composed of water-based resin, nano silicate and inorganic pigment, the surface of the waterproof coating 501 is coated with a flame-retardant coating 502, the flame-retardant coating 502 is fluorocarbon coating, the surface of the flame-retardant coating 502 is coated with a corrosion-resistant coating 503, the corrosion-resistant coating 503 is composed of environment-friendly resin, nano material and inorganic pigment, and the waterproof coating 501 is connected with the surface of the installation block 202, the surface of the installation frame 201 and the surface of the sealing cover 8.
Specifically, waterproof coating 501, flame retardant coating 502 and corrosion resistant coating 503 are arranged on the surface of mounting block 202, the surface of mounting frame 201 and the surface of sealing cover 8, so that the flame retardant and flame retardant properties of the insulation board are better improved, the waterproof and corrosion resistant properties of the insulation board can be improved, and the service life of the multifunctional fireproof insulation board with good flame retardant effect is prolonged.
In summary, by means of the above technical scheme of the utility model, during installation, the staff sequentially connects the phenolic foam partition plate two 404, the reinforcing frame 403 and the phenolic foam partition plate one 402 with the fixing column 401, then mutually coordinates the auxiliary rod 7 with the sealing cover 8, so that the auxiliary rod 7 is connected with the fixing column 401, meanwhile, the sealing cover 8 arranged by the auxiliary rod 7 is clamped with the inner wall of the reinforcing groove, which is favorable for improving the compression resistance of the multifunctional fireproof insulation board with good sealing performance and flame retardant effect, then mutually coordinates the fixing column 401 with the pawl 6, which is favorable for improving the compression resistance of the multifunctional fireproof insulation board with good flame retardant effect at the installation place, after connection, the mounting column 203 arranged by the fireproof insulation board body 1 is connected with the inner wall of the mounting hole arranged by the other fireproof insulation board body 1, then the staff mutually coordinates the mounting block 202 with the inner wall of the other mounting frame 201, and simultaneously, the auxiliary spring 303 and the auxiliary block 302 are mutually matched, which is favorable for auxiliary fixing the mounting block 202, and simultaneously, the sealing block 202, the waterproof coating layer 501 and the waterproof coating layer are arranged on the surface of the mounting block 201, the waterproof insulation board with good flame retardant effect, and the heat insulation board with better flame retardant effect, and the flame retardant effect can be further improved.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The multifunctional fireproof insulation board with the good flame retardant effect is characterized by comprising a fireproof insulation board body (1), wherein installation components (2) are installed on two sides of the fireproof insulation board body (1), an auxiliary component (3) is connected to the inner wall of the installation components (2), the auxiliary component (3) comprises a plurality of auxiliary holes formed in the inner wall of the installation components (2), telescopic rods (301) are arranged on the inner wall of each auxiliary hole, auxiliary blocks (302) are arranged at the telescopic ends of the telescopic rods (301), auxiliary springs (303) connected with the surfaces of the telescopic rods (301) are connected to the side faces of the auxiliary blocks (302), and the connecting ends of the auxiliary springs (303) are connected with the inner walls of the auxiliary holes;
The inner wall of fire prevention heated board body (1) is close to installation component (2) and is provided with reinforcement subassembly (4), the surface of fire prevention heated board body (1), installation component (2) scribbles protection subassembly (5), protection subassembly (5) include with the surface of fire prevention heated board body (1), installation component (2) surface connection's waterproof coating (501), waterproof coating (501) surface scribbles fire-retardant coating (502), fire-retardant coating (502) surface scribbles corrosion-resistant coating (503).
2. The multifunctional fireproof heat-insulating plate with good flame retardant effect according to claim 1, wherein the installation component (2) comprises an installation frame (201) and an installation block (202) which are fixedly connected with two sides of the fireproof heat-insulating plate body (1), one side of the fireproof heat-insulating plate body (1) is fixedly connected with a plurality of installation columns (203), one side of the fireproof heat-insulating plate body (1) is provided with a plurality of installation holes, and the inner walls of the installation holes are opposite to the installation columns (203).
3. The multifunctional fireproof insulation board with good flame retardant effect according to claim 2, wherein the reinforcing component (4) comprises a reinforcing groove formed in the side face of the fireproof insulation board body (1), a plurality of fixing columns (401) are arranged on the inner wall of the reinforcing groove in a penetrating mode, the fixing columns (401) are close to the mounting blocks (202) and the mounting frames (201) in a penetrating mode, phenolic foam partition boards (402) are connected with the fixing frames in a penetrating mode, reinforcing frames (403) are clamped above the phenolic foam partition boards (402), phenolic foam partition boards (404) are clamped above the reinforcing frames (403), and the phenolic foam partition boards (404), the reinforcing frames (403) and the phenolic foam partition boards (402) are located on the inner wall of the reinforcing groove.
4. The multifunctional fireproof insulation board with good flame retardant effect according to claim 3, wherein pawls (6) distributed equidistantly are arranged on the lower surfaces of the fixing columns (401) and the surface of the mounting column (203), and the side surfaces of the pawls (6) are far away from the phenolic foam partition board II (404).
5. The multifunctional fireproof insulation board with good flame retardant effect according to claim 4, wherein an auxiliary rod (7) is arranged above a plurality of fixing columns (401) far away from the pawl (6) in a penetrating manner, and a sealing cover (8) is fixedly connected above the auxiliary rod (7).
6. The multifunctional fireproof insulation board with good flame retardant effect according to claim 5, wherein the lower part of the sealing cover (8) is clamped with the inner wall of the reinforcing groove, and the lower part of the sealing cover (8) is connected with the upper part of the phenolic foam partition board II (404).
7. The multifunctional fireproof insulation board with good flame retardant effect according to claim 5, wherein the upper parts of the fixing columns (401) are matched with the auxiliary rods (7).
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221250093U true CN221250093U (en) | 2024-07-02 |
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