CN113622579A - Fastening type light gauge steel hangs member - Google Patents
Fastening type light gauge steel hangs member Download PDFInfo
- Publication number
- CN113622579A CN113622579A CN202110978932.3A CN202110978932A CN113622579A CN 113622579 A CN113622579 A CN 113622579A CN 202110978932 A CN202110978932 A CN 202110978932A CN 113622579 A CN113622579 A CN 113622579A
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- China
- Prior art keywords
- hanging rod
- piece
- suspender
- hanging
- threaded
- 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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
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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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
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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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
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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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
- E04B9/20—Means for suspending the supporting construction adjustable
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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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
- E04B2009/186—Means for suspending the supporting construction with arrangements for damping vibration
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a fastening type light steel keel hanging rod piece, relating to the technical field of buildings; the roof hanging device comprises a threaded hanging rod, a hanging piece fixing seat, a hanging rod fixing piece and a keel hanging rod, wherein the two ends of the hanging piece fixing seat are fixed at the roof, hanging rod nuts are screwed at the two ends of the outer side of the threaded hanging rod, a connecting bolt is arranged at the bottom of the hanging piece fixing seat, a transition assembly is installed in the horizontal rotation of the outer side of the connecting bolt, and a hanging rod connecting piece is installed in the internal rotation of the transition assembly. According to the invention, the transition assembly can rotate in the horizontal direction between the connecting bolt and the pendant fixing seat, the threaded hanging rod, the pendant fixing seat and the suspender fixing part can be quickly disassembled and assembled, and when the keel suspender is installed, the installation angle of the threaded hanging rod can be adjusted according to the distribution of the suspended ceiling, so that the threaded hanging rod is in a vertical state when stressed, and the stress area is increased, thereby improving the bearing stability.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a fastening type light steel keel hanging rod piece.
Background
The light steel keel is a novel building material, and along with the development of modern construction in China, the light steel keel is widely applied to places such as hotels, terminal buildings, vehicle transportation stations, playgrounds, markets, factories, office buildings, old building reconstruction, indoor decoration setting, ceilings and the like. The light steel (baking varnish) keel suspended ceiling has the advantages of light weight, high strength, adaptability to waterproof, shockproof, dustproof, soundproof, sound absorption, constant temperature and the like, and also has the advantages of short construction period, simple and convenient construction and the like.
The light steel keel is used for modeling and decorating non-bearing walls and building roofs with light boards such as paper-surface gypsum boards, decorative gypsum boards and the like as veneers. The modeling that is applicable to multiple building roof is decorated, the interior outer wall body of building and the base material of rack formula furred ceiling, light gauge steel mainly relies on the pole of hanging at the top to install in roof department, hang the pole and mainly rely on the scute, the gas nail etc. and install on the roof, the bottom relies on the both ends to have the screwed peg to connect, the fossil fragments support has strict requirements to level and straightness that hangs down, and current peg that hangs is after the fixed point is installed, its horizontal direction regulation effect is poor, it has the skew to cause many keel frame to hang the position of hanging and weighing, influence the stability and the effect of weighing of furred ceiling.
In view of the above, the present invention provides a fastening type light steel keel hanging rod, so as to solve the technical problems in the prior art.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides a fastening type light steel keel hanging rod piece.
The invention provides a fastening type light steel keel hanging rod piece which comprises a threaded hanging rod, a hanging piece fixing seat, a hanging rod fixing piece and a keel hanging rod, wherein two ends of the hanging piece fixing seat are fixed at a roof, two ends of the outer side of the threaded hanging rod are respectively screwed with a hanging rod nut, the bottom of the hanging piece fixing seat is provided with a connecting bolt, the outer side of the connecting bolt is horizontally and rotatably provided with a transition assembly, a hanging rod connecting piece is rotatably arranged inside the transition assembly, the threaded hanging rod is arranged between the hanging rod connecting piece and the hanging rod fixing piece, a fastening bolt is arranged inside the hanging rod fixing piece, and the keel hanging rod is clamped inside the hanging rod fixing piece through the fastening bolt.
Preferably, the hanging rod connecting piece and the hanging rod fixing piece are both provided with a hanging rod mounting groove with a U-shaped structure, the tail end caliber of the hanging piece mounting groove is larger than the opening caliber, the top end of the hanging rod nut is provided with a locking cylinder, and the threaded hanging rod is connected between the hanging rod connecting piece and the hanging rod fixing piece through the hanging rod nut and the hanging rod mounting groove.
In the invention, preferably, an annular groove is arranged on the outer side of the locking cylinder, and a locking buckle with a C-shaped structure is embedded in the annular groove.
Preferably, the transition assembly comprises an inverted-U-shaped transition hook plate, arc-shaped mounting grooves are formed in two sides of the transition hook plate, and limiting grooves are formed in the bottom of the arc-shaped mounting grooves.
Preferably, the hanging rod connecting piece comprises a connecting plate with a U-shaped structure, threaded rods matched with the arc-shaped mounting grooves are arranged on two sides of the connecting plate, limit nuts are screwed on the outer sides of the threaded rods, one ends of the limit nuts are provided with limit sleeves, and the outer diameter of each limit sleeve is located between the width of each arc-shaped mounting groove and the width of each limit groove.
Preferably, the suspender fixing part comprises a suspender fixing plate, two connecting rings are respectively arranged on two sides of the suspender fixing plate, a suspender clamping plate is rotatably arranged between every two adjacent connecting rings, a suspender hanging plate is arranged at the bottom of the suspender clamping plate, and a strip-shaped groove is formed in the side surface of the suspender clamping plate.
In the invention, preferably, the top end of the side surface of the suspender clamping plate is provided with an inclined part and a convex part, and the convex part is distributed at the middle position of the strip-shaped groove.
Preferably, a plurality of limiting racks are arranged at the bottom of the outer side of the suspender clamping plate, the limiting racks are distributed on two sides of the strip-shaped groove, and the thickness of the limiting racks is sequentially increased from top to bottom.
Compared with the prior art, the invention provides a fastening type light steel keel hanging rod piece, which has the following beneficial effects:
according to the invention, the transition assembly connected with the upper end of the threaded hanging rod and the hanging rod connecting piece can rotate in the vertical direction, the transition assembly can rotate in the horizontal direction through the connecting bolt and the hanging rod fixing seat, and the threaded hanging rod, the hanging rod fixing seat and the hanging rod fixing piece can be quickly disassembled and assembled.
Drawings
FIG. 1 is a schematic structural view of a fastening type light steel keel hanging rod piece provided by the invention;
FIG. 2 is a schematic structural view of a transition assembly of a fastening type light steel keel hanging rod piece according to the invention;
FIG. 3 is a schematic view of an assembled structure of a hanging rod connecting piece of the fastening type light steel keel hanging rod piece provided by the invention;
FIG. 4 is a schematic structural view of a hanging rod connecting member of the fastening type light steel keel hanging rod piece provided by the invention;
FIG. 5 is a schematic view of a fastening member of the fastening type light gauge steel hanging rod of the present invention;
fig. 6 is a schematic top view of a suspension rod fixing member of the fastening type light steel keel hanging rod according to the invention.
In the figure: 1 jib mounting, 101 go-between, 102 jib fixed plate, 103 bellying, 104 jib splint, 105 jib link plate, 106 bar grooves, 107 spacing racks, 2 screw peg, 3 transition subassemblies, 301 transition colludes the board, 302 arc mounting grooves, 303 spacing grooves, 4 pendant fixing bases, 5 connecting bolts, 6 peg connecting pieces, 601 connecting plate, 602 threaded rod, 603 spacing sleeves, 604 spacing nut, 7 peg nuts, 8 fastening bolts, 9 fossil fragments jib.
Detailed Description
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of 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 not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1 to 6, a fastening type light steel keel hanging rod piece comprises a threaded hanging rod 2, a hanging piece fixing seat 4, a hanging rod fixing part 1 and a keel hanging rod 9, wherein two ends of the hanging piece fixing seat 4 are fixed at a roof, hanging rod nuts 7 are screwed at two outer ends of the threaded hanging rod 2, a connecting bolt 5 is arranged at the bottom of the hanging piece fixing seat 4, a transition assembly 3 is horizontally and rotatably installed at the outer side of the connecting bolt 5, a hanging rod connecting part 6 is rotatably installed inside the transition assembly 3, the threaded hanging rod 2 is arranged between the hanging rod connecting part 6 and the hanging rod fixing part 1, a fastening bolt 8 is installed inside the hanging rod fixing part 1, the keel hanging rod 9 is clamped inside the hanging rod fixing part 1 through the fastening bolt 8, in the invention, the transition assembly 3 at the upper end of the threaded hanging rod 2 and the hanging rod connecting part 6 can rotate in the vertical direction, and the transition assembly 3 can rotate in the horizontal direction through the connecting bolt 5 and the hanging piece fixing seat 4 And threaded peg 2, pendant fixing base 4, can carry out quick assembly disassembly between jib mounting 1, when installation fossil fragments jib 9, can be according to the distribution of furred ceiling, adjust threaded peg 2's installation angle, be in vertical state when making threaded peg 2 atress, increase the stress area and then improve the stability that bears, threaded peg 2's top and bottom all have the swing effect simultaneously, after the furred ceiling installation is accomplished, good activity buffering space has, when meetting external force, alleviate the impact to one side transfer simultaneously, the integrality that keeps the furred ceiling when meetting vibrations, the security and the stability of furred ceiling improve.
As a further scheme in the invention, the hanging rod connecting piece 6 and the suspender fixing piece 1 are both provided with hanging rod mounting grooves with U-shaped structures, the tail end caliber of each hanging rod mounting groove is larger than the opening caliber, the top end of the hanging rod nut 7 is provided with a locking cylinder, the threaded hanging rod 2 is connected between the hanging rod connecting piece 6 and the suspender fixing piece 1 through the hanging rod nut 7 and the hanging rod mounting groove, when the threaded hanging rod 2 is connected with the hanging rod connecting piece 6 and the suspender fixing piece 1, the threaded hanging rod 2 can be directly pushed in from the side through the size matched with the outer diameter of the threaded hanging rod 2 through the opening of the hanging rod mounting groove, the locking cylinder is inserted into the tail end of the hanging rod mounting groove under the action of gravity, the quick fixation of the upper end and the lower end of the threaded hanging rod 2 is completed, the installation is simple and convenient, and the installation height of the light steel keel hanging rod piece can be adjusted through rotating the hanging rod nut 7.
As a further scheme in the invention, an annular groove is formed in the outer side of the locking cylinder, a locking buckle with a C-shaped structure is embedded in the annular groove, the locking buckle is pushed into the annular groove after the threaded hanging rod 2 is installed, the connecting end of the hanging rod nut 7 is effectively limited, the locking cylinder is prevented from being separated from the hanging rod installation groove during vibration, the installation stability is improved, meanwhile, a buffer gap is reserved, and the anti-vibration effect of the suspended ceiling is improved.
As a further scheme in the present invention, the transition component 3 includes an inverted U-shaped transition hook plate 301, the two sides of the transition hook plate 301 are both provided with arc-shaped mounting grooves 302, and the bottom of the arc-shaped mounting groove 302 is provided with a limit groove 303, so that when the connecting piece of the hanging rod connecting piece 6 is mounted, the connecting piece can be pushed in through the arc-shaped mounting groove 302, thereby completing the rapid combination between the hanging rod connecting piece 6 and the transition component 3, and the mounting is simple and convenient.
As a further scheme of the invention, the hanging rod connecting piece 6 comprises a connecting plate 601 with a U-shaped structure, both sides of the connecting plate 601 are provided with threaded rods 602 matched with the arc-shaped mounting grooves 302, the outer sides of the threaded rods 602 are in threaded connection with limit nuts 604, one ends of the limit nuts 604 are provided with limit sleeves 603, the outer diameter of each limit sleeve 603 is positioned between the width of the arc-shaped mounting groove 302 and the width of the limit groove 303, when the hanging rod connecting piece 6 is mounted, the threaded rods 602 can be pushed in along the arc-shaped mounting grooves 302, the limit nuts 604 are continuously rotated after being pushed in, and then the transition component 3 and the hanging rod connecting piece 6 are stably connected through the matching of the limit sleeves 603 and the limit grooves 303, the mounting mode can carry out subsequent assembly after assembly on the ground, effectively saves the mounting time, and only needs to rotate the limit nuts 604 backwards when being dismounted, the hanging rod connecting piece 6 can be taken out, and the installation is simple and convenient.
As a further scheme in the present invention, the boom fixing member 1 includes a boom fixing plate 102, two connecting rings 101 are respectively installed on two sides of the boom fixing plate 102, a boom clamping plate 104 is rotatably installed between two adjacent connecting rings 101, a boom hanging plate 105 is installed at the bottom of the boom clamping plate 104, a strip-shaped groove 106 is installed on a side surface of the boom clamping plate 104, when the keel hanger 9 is installed, the keel hanger is fixed by two symmetrically distributed boom clamping plates 104, and is locked by fastening bolts 8 inserted into the strip-shaped groove 106, the installation is simple and convenient, the connection is stable, and the keel hanger can be applied to installation of keel hangers 9 with different thicknesses, and the application range of the light steel keel hanger is increased.
As a further scheme of the present invention, the top end of the side surface of the boom clamp 104 is provided with an inclined portion and a protruding portion 103, and the protruding portion 103 is distributed at the middle position of the strip-shaped groove 106, when the boom fixing member 1 is installed, the boom fixing member 1 and the fastening bolt 8 can be assembled on the ground according to the thickness of the keel boom 9, the fastening bolt 8 is pushed to the top end of the strip-shaped groove 106, the bottom end of the boom clamp 104 is unfolded when the keel boom 9 is installed, the keel boom 9 is inserted into the groove and then pulled down to pull the fastening bolt 8 to stride over the protruding portion 103, the keel boom 9 is clamped by the elasticity of the boom clamp 104, the preparation work can be completed on the ground, the top portion is assembled, and the convenience of the installation of the light steel keel hanging rod is further improved.
As a further scheme of the present invention, a plurality of limiting racks 107 are disposed at the bottom of the outer side of the hanger bar clamp plate 104, and the limiting racks 107 are distributed on two sides of the bar-shaped groove 106, the thickness of the limiting racks 107 is sequentially increased from top to bottom, when the fastening bolts 8 are tightened down and assembled quickly, the fastening bolts 8 are continuously pushed down to be embedded into the area of the limiting racks 107, the fastening bolts 8 are tightly locked by the limiting racks 107 with sequentially increased thickness, so as to increase the mounting stability of the keel hanger bar 9, and the light steel keel hanger bar is stably mounted on keel hangers 9 with different thicknesses, thereby further increasing the application range of the light steel keel hanger bar.
When using, can rotate on vertical direction between transition subassembly 3 and the peg connecting piece 6 of connecting the 2 upper ends of screw thread peg, transition subassembly 3 can carry out the rotation of horizontal direction through connecting bolt 5 and pendant fixing base 4 between, and screw thread peg 2, pendant fixing base 4, can carry out quick assembly disassembly between the jib mounting 1, when installation fossil fragments jib 9, can be according to the distribution of furred ceiling, adjust the installation angle of screw thread peg 2, be in vertical state when making screw thread peg 2 atress, increase the atress area and then improve the stability that bears, the top and the bottom of screw thread peg 2 all have the swing effect simultaneously, after the furred ceiling installation is accomplished, good activity buffer space has, when meetting external force, to one side transfer simultaneously and alleviate the impact, the integrality that keeps the furred ceiling when meetting vibrations.
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 (8)
1. A fastening type light steel keel hanging rod piece comprises a threaded hanging rod (2), a hanging piece fixing seat (4), a suspender fixing piece (1) and a keel suspender (9), two ends of the hanging piece fixing seat (4) are fixed at the roof, two ends of the outer side of the threaded hanging rod (2) are respectively screwed with a hanging rod nut (7), it is characterized in that the bottom of the pendant fixing seat (4) is provided with a connecting bolt (5), and the outer side of the connecting bolt (5) is horizontally and rotatably provided with a transition component (3), a hanging rod connecting piece (6) is rotatably arranged in the transition component (3), the threaded hanging rod (2) is arranged between the hanging rod connecting piece (6) and the hanging rod fixing piece (1), a fastening bolt (8) is arranged in the suspender fixing piece (1), and the keel suspender (9) is clamped inside the suspender fixing piece (1) through a fastening bolt (8).
2. The fastening type light steel keel hanging rod piece according to claim 1, wherein the hanging rod connecting piece (6) and the hanging rod fixing piece (1) are both provided with a hanging rod installation groove with a U-shaped structure, the tail end caliber of the hanging rod installation groove is larger than the opening caliber, the top end of the hanging rod nut (7) is provided with a locking cylinder, and the threaded hanging rod (2) is connected between the hanging rod connecting piece (6) and the hanging rod fixing piece (1) through the hanging rod nut (7) and the hanging rod installation groove.
3. The fastening type light steel keel hanging rod piece according to claim 2, wherein an annular groove is arranged on the outer side of the locking cylinder, and a C-shaped locking buckle is embedded in the annular groove.
4. The fastening type light steel keel hanging rod piece according to claim 1, wherein the transition assembly (3) comprises an inverted U-shaped transition hook plate (301), arc-shaped mounting grooves (302) are arranged on two sides of the transition hook plate (301), and a limiting groove (303) is arranged at the bottom of each arc-shaped mounting groove (302).
5. The fastening type light steel keel hanging rod piece according to claim 4, wherein the hanging rod connecting piece (6) comprises a connecting plate (601) with a U-shaped structure, both sides of the connecting plate (601) are provided with threaded rods (602) matched with the arc-shaped mounting grooves (302), the outer side of each threaded rod (602) is in threaded connection with a limiting nut (604), one end of each limiting nut (604) is provided with a limiting sleeve (603), and the outer diameter of each limiting sleeve (603) is located between the width of each arc-shaped mounting groove (302) and the width of each limiting groove (303).
6. The fastening type light steel keel hanging rod piece according to claim 1, wherein the suspender fixing piece (1) comprises a suspender fixing plate (102), two connecting rings (101) are installed on two sides of the suspender fixing plate (102), a suspender clamping plate (104) is rotatably installed between two adjacent connecting rings (101), a suspender hanging plate (105) is arranged at the bottom of the suspender clamping plate (104), and a strip-shaped groove (106) is arranged on the side surface of the suspender clamping plate (104).
7. The fastening type light steel keel hanging rod piece according to claim 6, wherein the top end of the side surface of the hanger rod clamping plate (104) is provided with an inclined part and a protruding part (103), and the protruding part (103) is distributed at the middle position of the strip-shaped groove (106).
8. The fastening type light steel keel hanging rod piece according to claim 7, wherein a plurality of limiting racks (107) are arranged at the bottom of the outer side of the hanger rod clamping plate (104), the limiting racks (107) are distributed on two sides of the strip-shaped groove (106), and the thickness of the limiting racks (107) is sequentially increased from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978932.3A CN113622579A (en) | 2021-08-25 | 2021-08-25 | Fastening type light gauge steel hangs member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978932.3A CN113622579A (en) | 2021-08-25 | 2021-08-25 | Fastening type light gauge steel hangs member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113622579A true CN113622579A (en) | 2021-11-09 |
Family
ID=78387596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110978932.3A Withdrawn CN113622579A (en) | 2021-08-25 | 2021-08-25 | Fastening type light gauge steel hangs member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113622579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215258A (en) * | 2021-12-27 | 2022-03-22 | 山西建筑工程集团有限公司 | Shock-proof type furred ceiling light gauge steel connection structure |
-
2021
- 2021-08-25 CN CN202110978932.3A patent/CN113622579A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215258A (en) * | 2021-12-27 | 2022-03-22 | 山西建筑工程集团有限公司 | Shock-proof type furred ceiling light gauge steel connection structure |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211109 |
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| WW01 | Invention patent application withdrawn after publication |