CN113089863A - Easy-to-assemble and disassemble prefabricated building with damping structure - Google Patents
Easy-to-assemble and disassemble prefabricated building with damping structure Download PDFInfo
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- CN113089863A CN113089863A CN202110513746.2A CN202110513746A CN113089863A CN 113089863 A CN113089863 A CN 113089863A CN 202110513746 A CN202110513746 A CN 202110513746A CN 113089863 A CN113089863 A CN 113089863A
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- plate body
- disassemble
- assemble
- easy
- prefabricated building
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- 238000013016 damping Methods 0.000 title abstract description 13
- 230000009467 reduction Effects 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims abstract description 6
- 230000003139 buffering effect Effects 0.000 claims abstract description 5
- 230000035939 shock Effects 0.000 claims description 19
- 230000030279 gene silencing Effects 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Classifications
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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
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
- E04B1/90—Insulating elements for both heat and sound slab-shaped
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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
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
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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
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/6187—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means on top and/or bottom surfaces of the slabs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention discloses an easily-assembled and easily-disassembled fabricated building with a damping structure, which relates to the technical field of fabricated buildings and comprises a plate body, a rubber supporting rod, a damper, a splicing structure convenient to disassemble and assemble, a buffering structure convenient to buffer and damp and a noise reduction structure convenient to improve the heat preservation and noise reduction effects. According to the invention, the shaking motion sense is well reduced through the damper, and meanwhile, the shaking is further reduced through the extrusion contact among the rubber supporting rods and the elastic action of the buffer spring, so that a good damping effect is realized, and the problem of poor damping effect is solved.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to an easy-to-assemble and disassemble assembly type building with a damping structure.
Background
Nowadays, assembly type buildings are more and more widely used, the complex process of the traditional type buildings is separated, the building construction time is really reduced, the building efficiency is greatly improved, and the existing assembly type buildings still have certain defects.
Through retrieval, chinese patent No. CN104935003B, publication No. 2018, 12/11/2018, discloses a damping structure of an assembly type building, and it is proposed herein that "both the right end of the top of the first block and the left end of the bottom of the second block are fixedly connected to a connecting block through a first screw, the inner side of the connecting block is fixedly connected to a damper, and the top of the second block is fixedly connected to a bottom plate through a second screw", wherein the connection and damping between the two is performed by means of the damper, and the damping effect cannot be well achieved.
Disclosure of Invention
The invention aims to provide an easily-disassembled and assembled assembly type building with a damping structure, and aims to solve the problem of poor damping effect in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an easy-to-assemble and disassemble fabricated building with a shock absorption structure comprises a plate body, a rubber supporting rod, a damper, a splicing structure convenient to disassemble and assemble, a buffer structure convenient to buffer and absorb shock and a noise reduction structure convenient to improve the heat preservation and noise reduction effects;
hinge seats are mounted at one end of one side, opposite to the plate body, dampers are arranged between the hinge seats, and the buffer structures are arranged at two sides of one side, opposite to the plate body;
the splicing structure is arranged in the middle of two sides of the plate body;
the noise reduction structure is arranged in the middle of the inside of the plate body.
Preferably, buffer structure includes the dashpot, the dashpot is seted up in the both sides of the relative one side of plate body, and the inside one side of dashpot all installs the buffering spring, the equal sliding connection of the relative one side of buffering spring runs through the rubber branch of dashpot.
Preferably, the guide rods are installed at the upper end and the lower end of one side of the plate body, and the guide pipes are correspondingly installed at the upper end and the lower end of the other side of the plate body.
Preferably, a fixing groove is formed in one side of the outer side of the plate body, a fixing bolt is rotatably connected to the inside of the fixing groove, and an extruding body is installed at one end of the fixing bolt.
Preferably, mosaic structure includes the draw-in groove, accomodates groove, kelly and ejector pad, accomodate the groove and set up in the intermediate position department of plate body one side, and accomodate one side sliding connection of inslot portion and run through the kelly of accomodating the groove, the ejector pad is installed to one side of kelly, and the draw-in groove has been seted up to the plate body opposite side that the kelly corresponds one side.
Preferably, the noise reduction structure comprises a silencing cavity, heat insulation cotton and reflection holes, the silencing cavity is arranged in the middle of the inner portion of the plate body, the heat insulation cotton is adhered to the inner wall of the silencing cavity, and the reflection holes are uniformly formed in the inner wall of the heat insulation cotton.
Preferably, the interior of the sound attenuation cavity is uniformly provided with reinforcing ribs, and the overall shape of each reinforcing rib is triangular.
Preferably, the installation rods are uniformly installed in the silencing cavities, and silencing plates are uniformly installed on the outer walls of the installation rods.
Preferably, the shape of the pressing body is spherical, and the shape of the push block on one side of the pressing body is hemispherical.
Preferably, one end of the fixing groove is communicated with the accommodating groove, and one end of a fixing bolt in the extruding body is connected with the extruding body through a bearing.
Compared with the prior art, the easily-assembled and disassembled fabricated assembly type building with the damping structure has the following beneficial effects:
1. the invention provides plate bodies, a guide rod, a guide pipe, a fixing bolt, an extruding body, a push block, a clamping rod, a containing groove and a clamping groove, wherein the other plate body is lifted to a certain height and then moves downwards so that the guide rod is clamped into the guide pipe to realize the transverse fixation of the two plate bodies, and then the fixing bolt is rotated to drive the extruding body to extrude the push block, so that the clamping rod is pushed out of the containing groove and clamped into the clamping groove to realize the longitudinal fixation, thereby solving the problem of inconvenient disassembly and assembly;
2. the invention provides the damper, the rubber supporting rods and the buffer springs, when in use, the damper is influenced by the outside to generate vibration or shake, the shake dynamic sense is well reduced through the damper, and meanwhile, the shake is further reduced through the extrusion contact among the rubber supporting rods and the elastic action of the buffer springs, so that a good shock absorption effect is realized, and the problem of poor shock absorption effect is solved;
3. the invention provides a silencing cavity, a reflection hole, a silencing plate, a reinforcing rib, a plate body and heat insulation cotton, wherein external noise is transmitted to the inside of the silencing cavity in a sound wave mode, repeated reflection is weakened in the reflection hole, sound wave transmission is further blocked under the action of the silencing plate, the purpose of noise reduction is well achieved, meanwhile, the structural strength of the plate body is supplemented through the triangular arrangement of the reinforcing rib, the heat insulation performance of the plate body is improved through the arrangement of the heat insulation cotton, and therefore the problem of poor heat insulation and noise reduction effects is solved.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;
FIG. 3 is a schematic view of a partial front cross-sectional structure of the present invention during splicing;
FIG. 4 is a schematic side view of the present invention;
FIG. 5 is a schematic front view of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 1A according to the present invention.
In the figure: 1. a plate body; 2. splicing structures; 201. a card slot; 202. a receiving groove; 203. a clamping rod; 204. a push block; 3. a buffer tank; 4. a rubber strut; 5. a guide tube; 6. a hinged seat; 7. a fixing bolt; 8. a damper; 9. a guide bar; 10. a buffer spring; 11. a noise reduction structure; 1101. a sound-deadening chamber; 1102. heat preservation cotton; 1103. a reflective aperture; 12. mounting a rod; 13. reinforcing ribs; 14. a sound-absorbing panel; 15. an extrusion body; 16. and fixing the grooves.
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; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1-6, an easy-to-assemble and disassemble fabricated building with a shock-absorbing structure comprises a plate body 1, a rubber supporting rod 4, a damper 8, a splicing structure 2 convenient to disassemble and assemble, a buffer structure convenient to buffer and absorb shock, and a noise-reducing structure 11 convenient to improve heat-insulating and noise-reducing effects;
the splicing structure 2 is arranged in the middle of two sides of the plate body 1;
the noise reduction structure 11 is arranged at the middle position inside the plate body 1;
referring to fig. 1-6, an easily-disassembled and assembled prefabricated building with a shock absorption structure comprises a buffer structure, wherein the buffer structure comprises buffer grooves 3, the buffer grooves 3 are formed in two sides of one opposite side of a plate body 1, buffer springs 10 are mounted on one side of the inner part of each buffer groove 3, and rubber support rods 4 penetrating through the buffer grooves 3 are connected to one opposite side of each buffer spring 10 in a sliding mode;
the upper end and the lower end of one side of the plate body 1 are both provided with guide rods 9, and the upper end and the lower end of the other side of the plate body 1 are both correspondingly provided with guide pipes 5;
specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, when the shock absorber is used, the shock or shake generated by external influence is firstly reduced by the vibration feeling of the damper 8, and simultaneously, the vibration is further reduced by the pressing contact between the rubber support rods 4 and the elastic action of the buffer spring 10, so that a good shock absorbing effect is achieved.
Example 2: a fixing groove 16 is formed in one side of the outer side of the plate body 1, a fixing bolt 7 is rotatably connected to the inside of the fixing groove 16, and an extruding body 15 is installed at one end of the fixing bolt 7;
the splicing structure 2 comprises a clamping groove 201, an accommodating groove 202, a clamping rod 203 and a pushing block 204, wherein the accommodating groove 202 is formed in the middle of one side of the plate body 1, the clamping rod 203 penetrating through the accommodating groove 202 is connected to one side inside the accommodating groove 202 in a sliding mode, the pushing block 204 is installed on one side of the clamping rod 203, and the clamping groove 201 is formed in the other side, corresponding to one side of the clamping rod 203, of the plate body 1;
the shape of the extrusion body 15 is spherical, and the push block 204 at one side of the extrusion body 15 is hemispherical;
one end of the fixing groove 16 is communicated with the accommodating groove 202, and one end of the fixing bolt 7 in the extruding body 15 is connected with the extruding body 15 through a bearing;
specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, at first, another plate body 1 is lifted to a certain height, and then moves downward to allow the guide rod 9 to be clamped into the guide tube 5 to transversely fix the two plate bodies 1, and then the fixing bolt 7 is rotated to drive the extruding body 15 to extrude the pushing block 204, so that the clamping rod 203 is pushed out of the accommodating groove 202 and clamped into the clamping groove 201 to longitudinally fix the plate bodies, and finally, the plate body is convenient to disassemble and assemble.
Example 3: the noise reduction structure 11 comprises a noise reduction cavity 1101, heat insulation cotton 1102 and reflection holes 1103, wherein the noise reduction cavity 1101 is arranged in the middle position inside the plate body 1, the heat insulation cotton 1102 is adhered to the inner wall of the noise reduction cavity 1101, and the reflection holes 1103 are uniformly arranged on the inner wall of the heat insulation cotton 1102;
reinforcing ribs 13 are uniformly arranged in the silencing cavity 1101, and the overall shape of each reinforcing rib 13 is triangular;
the mounting rods 12 are uniformly arranged in the silencing cavity 1101, and silencing plates 14 are uniformly arranged on the outer walls of the mounting rods 12;
specifically, as shown in fig. 1, fig. 2 and fig. 3, firstly, external noise is transmitted to the interior of the sound-deadening cavity 1101 in the form of sound waves, the sound waves are repeatedly reflected and weakened in the reflection holes 1103, and the sound waves are further blocked from being transmitted under the action of the sound-deadening plate 14, so that the purpose of noise reduction is well achieved, meanwhile, the structural strength of the plate body 1 is supplemented through the triangular arrangement of the reinforcing ribs 13, and the heat insulation performance of the plate body 1 is improved through the arrangement of the heat insulation cotton 1102.
The working principle is as follows: when the assembly type building is used, the plate body 1 is firstly placed at a proper position for installation;
the first innovation point implementation step:
the first step is as follows: lifting the other plate body 1 to a certain height, and moving downwards to clamp the guide rod 9 into the guide pipe 5 to realize the transverse fixation of the two plate bodies 1;
the second step is that: the fixing bolt 7 is rotated to drive the extruding body 15 to extrude the pushing block 204, so that the clamping rod 203 is pushed out of the accommodating groove 202 and clamped into the clamping groove 201, longitudinal fixing is achieved, and finally disassembly and assembly are facilitated.
The implementation step of the second innovation point:
the first step is as follows: when in use, the vibration or shaking caused by the external influence can well reduce the shaking dynamic feeling through the damper 8;
the second step is that: meanwhile, through the extrusion contact between the rubber supporting rods 4 and the elastic action of the buffer spring 10, the shaking is further reduced, and a good damping effect is realized.
The third innovation point implementation step:
the first step is as follows: external noise is transmitted to the interior of the silencing cavity 1101 in a sound wave mode, is repeatedly reflected in the reflection holes 1103 for weakening, and is further blocked from being transmitted under the action of the silencing plate 14, so that the purpose of noise reduction is well achieved;
the second step is that: meanwhile, the structural strength of the plate body 1 is supplemented through the triangular arrangement of the reinforcing ribs 13, and the heat insulation performance of the plate body 1 is improved through the arrangement of the heat insulation cotton 1102.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a take shock-absorbing structure's easy dismouting fabricated building, includes plate body (1), rubber branch (4) and attenuator (8), its characterized in that: the thermal insulation and noise reduction structure also comprises a splicing structure (2) convenient to disassemble and assemble, a buffer structure convenient to buffer and absorb shock and a noise reduction structure (11) convenient to improve the thermal insulation and noise reduction effect;
hinge seats (6) are mounted at one end of one side, opposite to the plate body (1), dampers (8) are arranged between the hinge seats (6), and the buffer structures are arranged at two sides of one side, opposite to the plate body (1);
the splicing structure (2) is arranged in the middle of two sides of the plate body (1);
the noise reduction structure (11) is arranged in the middle of the interior of the plate body (1).
2. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure as claimed in claim 1, wherein: buffer structure includes dashpot (3), the both sides in the relative one side of plate body (1) are seted up in dashpot (3), and inside one side of dashpot (3) all installs buffering spring (10), the equal sliding connection in the relative one side of buffering spring (10) runs through rubber branch (4) of dashpot (3).
3. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure as claimed in claim 1, wherein: guide rods (9) are installed at the upper end and the lower end of one side of the plate body (1), and guide pipes (5) are installed at the upper end and the lower end of the other side of the plate body (1) correspondingly.
4. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure as claimed in claim 1, wherein: fixed slot (16) have been seted up to one side in the plate body (1) outside, and fixed slot (16) inside rotation is connected with gim peg (7), extrusion body (15) are installed to the one end of gim peg (7).
5. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure as claimed in claim 1, wherein: splicing structure (2) include draw-in groove (201), accomodate groove (202), kelly (203) and ejector pad (204), accomodate groove (202) and set up the intermediate position department in plate body (1) one side, and accomodate one side sliding connection in groove (202) inside and run through kelly (203) of accomodating groove (202), ejector pad (204) are installed to one side of kelly (203), and kelly (203) correspond plate body (1) opposite side of one side and seted up draw-in groove (201).
6. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure as claimed in claim 1, wherein: noise reduction structure (11) are including amortization chamber (1101), heat preservation cotton (1102) and reflection hole (1103), the intermediate position department in plate body (1) inside is seted up in amortization chamber (1101), and the inner wall of amortization chamber (1101) is pasted and is had heat preservation cotton (1102), reflection hole (1103) have evenly been seted up to the inner wall of heat preservation cotton (1102).
7. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure is characterized in that: reinforcing ribs (13) are uniformly arranged in the silencing cavity (1101), and the overall shape of each reinforcing rib (13) is triangular.
8. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure is characterized in that: the interior of the silencing cavity (1101) is uniformly provided with mounting rods (12), and the outer wall of each mounting rod (12) is uniformly provided with a silencing plate (14).
9. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure is characterized in that: the shape of the extrusion body (15) is spherical, and the push block (204) on one side of the extrusion body (15) is hemispherical.
10. The easy-to-assemble and disassemble prefabricated building with the shock absorption structure is characterized in that: one end of the fixing groove (16) is communicated with the accommodating groove (202), and one end of a fixing bolt (7) in the extruding body (15) is connected with the extruding body (15) through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513746.2A CN113089863A (en) | 2021-05-12 | 2021-05-12 | Easy-to-assemble and disassemble prefabricated building with damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513746.2A CN113089863A (en) | 2021-05-12 | 2021-05-12 | Easy-to-assemble and disassemble prefabricated building with damping structure |
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| Publication Number | Publication Date |
|---|---|
| CN113089863A true CN113089863A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110513746.2A Pending CN113089863A (en) | 2021-05-12 | 2021-05-12 | Easy-to-assemble and disassemble prefabricated building with damping structure |
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| CN (1) | CN113089863A (en) |
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| CN209053268U (en) * | 2018-11-06 | 2019-07-02 | 东莞阿卡狄亚装饰有限公司 | A kind of environment-friendly sheet for construction and decoration |
| CN210918049U (en) * | 2019-10-14 | 2020-07-03 | 四川大安建筑工程有限责任公司 | External wall insulation wallboard for building construction |
| CN211923135U (en) * | 2019-11-29 | 2020-11-13 | 科曼建筑科技(江苏)有限公司 | Light partition plate for floor partition |
| CN211948933U (en) * | 2020-04-09 | 2020-11-17 | 张猛 | Assembly type building wallboard connecting device that civil engineering used |
| CN112064975A (en) * | 2020-08-28 | 2020-12-11 | 宋丹 | Integrated solid wood composite household floor |
| CN212642285U (en) * | 2020-06-17 | 2021-03-02 | 叶乾 | Damping structure of prefabricated building |
| CN213062474U (en) * | 2020-05-03 | 2021-04-27 | 安徽水阳江建设工程有限公司 | Sound insulation board for construction site |
-
2021
- 2021-05-12 CN CN202110513746.2A patent/CN113089863A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9309806D0 (en) * | 1993-05-12 | 1993-06-23 | Novocheck Fire Systems Limited | Apparatus for constructing walls |
| JP2000129802A (en) * | 1998-10-26 | 2000-05-09 | Asahi Concrete Works Co Ltd | Joint construction for prefabricated member |
| CN109944334A (en) * | 2017-12-21 | 2019-06-28 | 天津凌盛水泥制品有限公司 | A kind of concrete compression-resistanmodifier plate |
| CN208486382U (en) * | 2018-05-28 | 2019-02-12 | 贵州跃龙杭萧钢结构有限公司 | A kind of damping formed steel construction |
| CN209053268U (en) * | 2018-11-06 | 2019-07-02 | 东莞阿卡狄亚装饰有限公司 | A kind of environment-friendly sheet for construction and decoration |
| CN210918049U (en) * | 2019-10-14 | 2020-07-03 | 四川大安建筑工程有限责任公司 | External wall insulation wallboard for building construction |
| CN211923135U (en) * | 2019-11-29 | 2020-11-13 | 科曼建筑科技(江苏)有限公司 | Light partition plate for floor partition |
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| CN213062474U (en) * | 2020-05-03 | 2021-04-27 | 安徽水阳江建设工程有限公司 | Sound insulation board for construction site |
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| CN112064975A (en) * | 2020-08-28 | 2020-12-11 | 宋丹 | Integrated solid wood composite household floor |
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Application publication date: 20210709 |