CN215519362U - Curtain wall connecting node structure of metal sandwich plate unit component - Google Patents
Curtain wall connecting node structure of metal sandwich plate unit component Download PDFInfo
- Publication number
- CN215519362U CN215519362U CN202121010599.9U CN202121010599U CN215519362U CN 215519362 U CN215519362 U CN 215519362U CN 202121010599 U CN202121010599 U CN 202121010599U CN 215519362 U CN215519362 U CN 215519362U
- Authority
- CN
- China
- Prior art keywords
- metal sandwich
- groove
- node structure
- curtain wall
- unit
- 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.)
- Active
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The embodiment of the utility model discloses a curtain wall connecting node structure of a metal sandwich board unit assembly, which comprises unit body purlines, wall board fixing pieces and connecting pieces, wherein the unit body purlines are used for connecting a plurality of metal sandwich board unit bodies; the wall plate fixing piece is arranged below the unit body purline; the connecting piece comprises connecting side plates and connecting bottom plates which are connected with each other, the connecting bottom plates are connected above the wallboard fixing pieces, vertical sliding grooves are formed in the connecting side plates, and first screw rods penetrate through the vertical sliding grooves to be connected with the end portions, close to the wallboard fixing pieces, of the unit purlins. The node structure of the embodiment of the utility model can adjust the position of the large wall plate structure formed by the plurality of metal sandwich plate unit bodies on the wall plate fixing piece, avoids using complicated procedures such as cutting and welding for adjustment, and effectively improves the installation quality of the metal plate curtain wall.
Description
Technical Field
The utility model belongs to the technical field of buildings, and particularly relates to a curtain wall connecting node structure of a metal sandwich board unit assembly.
Background
The metal wall surface sandwich board is used for industrial buildings, industrial buildings often have large enclosing areas, the metal wall surface sandwich board is widened by 1 meter, a plurality of metal wall surface sandwich board unit bodies are required to be fixed through splicing and keel purlins, large wall board structures in large unit body forms are assembled, and then the large wall board structures are hoisted to improve the efficiency of large-area wall surface construction of the industrial buildings.
However, often because the error of main part milking ditch makes the fossil fragments of metal curtain wall battenboard can not realize ideal roughness at the job site, and then adjusts the error through loaded down with trivial details processes such as cutting welding, and is hard when mistake, and the quality after the modification can't obtain guaranteeing. Under the condition of fire prevention requirement, some errors can not be avoided, and the flatness of the installed curtain wall can not be guaranteed, so that the defects of appearance and water tightness are caused.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem in the prior art, the embodiment of the utility model provides a curtain wall connecting node structure of a metal sandwich board unit component.
The embodiment of the utility model provides a curtain wall connecting node structure of a metal sandwich board unit component, which comprises:
unit body purlines for connecting a plurality of metal sandwich board unit bodies;
the wall plate fixing piece is arranged below the unit purlines;
the connecting piece comprises connecting side plates and connecting bottom plates which are connected with each other, the connecting bottom plates are connected above the wallboard fixing pieces, vertical sliding grooves are formed in the connecting side plates, and first screw rods penetrate through the vertical sliding grooves to be connected with the end portions, close to the wallboard fixing pieces, of the unit purlines.
Further, the first screw is capable of reciprocating along the height direction of the vertical chute.
Further, a hausen groove is formed in the lower portion of the connecting bottom plate, the hausen groove is parallel to the plane where the connecting side plates are located, and the groove bottom of the hausen groove is connected to the upper portion of the wallboard fixing piece.
Further, a second screw rod is arranged in the Hafen groove, penetrates through the connecting bottom plate and can reciprocate along the length direction of the Hafen groove.
Further, a connecting base is arranged below the hafen groove, the bottom of the hafen groove is connected to the connecting base, and the connecting base is arranged above the wallboard fixing piece.
Furthermore, a horizontal sliding groove perpendicular to the connecting side plate is formed in the connecting base on one side of the hafen groove, and a second screw penetrates through the horizontal sliding groove to be connected to the wallboard fixing piece.
Further, the second screw may be reciprocally movable along a length direction of the horizontal chute.
Furthermore, the wallboard fixing piece is of a concrete structure, and one end of the second screw rod is embedded in the concrete structure.
Furthermore, the two connecting pieces are respectively arranged on two opposite sides of the end part, close to the wallboard fixing piece, of the unit body purline.
According to the curtain wall connecting node structure of the metal sandwich board unit assembly provided by the embodiment of the utility model, the connecting piece is arranged in front of the wall board fixing piece and the unit purlines, the connecting bottom plate of the connecting piece is connected above the wall board fixing piece, the connecting side plate is provided with the vertical sliding groove, the first screw penetrates through the vertical sliding groove to be connected with the end part, close to the wall board fixing piece, of the unit purlines, so that the position of a large wall board structure formed by a plurality of metal sandwich board unit bodies on the wall board fixing piece is adjusted, complicated procedures such as cutting and welding are avoided, and the installation quality of a metal plate curtain wall is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a curtain wall connecting node structure of a metal sandwich panel unit assembly according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a large wall panel structure in a curtain wall connection node structure of a metal sandwich panel unit assembly according to an embodiment of the present invention;
fig. 3 is a schematic side structure view of a curtain wall connecting node structure of a metal sandwich panel unit assembly according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a curtain wall connecting node structure of a metal sandwich panel unit assembly according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. 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.
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. Furthermore, the terms "coupled" or "electrically connected" are intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The following description is of the preferred embodiment for carrying out the utility model, and is made for the purpose of illustrating the general principles of the utility model and not for the purpose of limiting the scope of the utility model. The scope of the present invention is defined by the appended claims.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Referring to fig. 1, a schematic perspective view of a curtain wall connecting node structure of a metal sandwich panel unit assembly according to an embodiment of the present invention is shown, where the curtain wall connecting node structure of the metal sandwich panel unit assembly includes unit purlins 10, metal sandwich panel units 101, wall panel fixing members 20, and connecting members 30.
Referring to fig. 2 to 4, a plurality of metal sandwich panel units 101 are connected to the unit purlins 10, where the plurality of metal sandwich panel units 101 are sequentially spread along the length direction of the unit purlins 10 and are continuously connected to the plurality of unit purlins 10, so as to form a large-area wall panel structure, where the connection mode between the unit purlins 10 and the wall panel fixing members 20 includes, but is not limited to, a bolt connection or a self-tapping screw connection.
The wall panel fastener 20 is disposed below the unit body purlins 10, i.e., the wall panel fastener 20 herein includes, but is not limited to, a ring beam or a ground beam structure.
The connecting piece 30 comprises connecting side plates 310 and connecting bottom plates 320 which are connected with each other, the connecting bottom plates 320 are connected above the wallboard fixing pieces 20, vertical sliding grooves 301 are formed in the connecting side plates 310, and first screws 201 penetrate through the vertical sliding grooves 301 to be connected with the end portions, close to the wallboard fixing pieces 20, of the unit purlins 10.
Specifically, the connecting member 30 is disposed at an end of the unit purlin 10 close to the wall panel fixing member 20, the connecting side plate 310 and the connecting bottom plate 320 are connected to each other to form an L-shaped external angle of 90 degrees, the unit purlin 10 is disposed above the wall panel fixing member 20 to form an internal angle, the L-shaped connecting member 30 can be matched with the internal angle between the unit purlin 10 and the wall panel fixing member 20, the connecting bottom plate 320 is directly or indirectly connected to the wall panel fixing member 20, the connecting side plate 310 attached to the unit purlin 10 is provided with the vertical sliding groove 301, the first screw 201 passes through the vertical sliding groove 301 to be detachably connected with the end of the unit purlin 10 close to the wall panel fixing member 20, and by adjusting the position of the first screw 201 in the vertical sliding groove 301, and then realize the relative movement between the connecting piece 30 and the unit purlines 10, namely realized to the big wallboard structure in the regulation of the setting position of building wall, avoided using tedious process adjustment such as cutting welding, effectively promoted the installation quality of sheet metal curtain wall.
Further, the first screw 201 is capable of reciprocating along the height direction of the vertical chute 301. Specifically, the first screw 201 can perform reciprocating movement along the height direction of the vertical sliding groove 301 to realize reciprocating movement of the unit purlins 10 in the height direction relative to the connecting member 30 to realize adjustment of the setting height of the large wall panel structure on the building wall.
Further, a hafen groove 40 is arranged below the connecting bottom plate 320, the hafen groove 40 is arranged parallel to the plane where the connecting side plate 310 is located, and the groove bottom of the hafen groove 40 is connected above the wallboard fixing piece 20.
Specifically, connect the bottom plate 320 with pass through between the wallboard mounting 20 the hafen groove 40 carries out indirect connection, hafen groove 40 clamp is established the top of wallboard mounting 20 with connect between the bottom plate 320, just the length direction in hafen groove 40 with the plane that connects the curb plate 310 place is parallel, the tank bottom in hafen groove 40 passes through detachable connecting piece and connects the top of wallboard mounting 20.
Furthermore, a second screw 202 is arranged in the hafen groove 40, and the second screw 202 passes through the connecting bottom plate 320 and can reciprocate along the length direction of the hafen groove 40.
Specifically, the second screw 202 is pre-installed in the hafen groove 40, and the second screw 202 passes through the connecting bottom plate 320 above the hafen groove 40 to realize the connection between the connecting member 30 and the wallboard fixing member 20, so that the second screw 202 can reciprocate along the length direction of the hafen groove 40, so that the connecting member 30 can reciprocate relative to the wallboard fixing member 20, and further, the installation position of the large wallboard structure relative to the wallboard fixing member 20 can be adjusted.
Furthermore, a connection base 50 is arranged below the hafen groove 40, the bottom of the hafen groove 40 is connected to the connection base 50, and the connection base 50 is arranged above the wallboard fixing piece 20.
Specifically, the hayfever slot 40 is not directly connected to the wallboard fixture 20, but is connected and transited through the connection base 50, that is, the connection base 50 is disposed above the wallboard fixture 20 and below the bottom of the hayfever slot 40.
In addition, a horizontal sliding groove 302 perpendicular to the connecting side plate 310 is arranged on the connecting base 50 on one side of the hafen groove 40, and a third screw 203 passes through the horizontal sliding groove 302 and is connected to the wallboard fixing member 20.
Specifically, the horizontal sliding groove 302 is arranged on one side of the hafen groove 40 and is perpendicular to the connecting side plate 310, the horizontal sliding groove 302 and the vertical sliding groove 301 are also in a relatively perpendicular relationship, and the third screw 203 passes through the horizontal sliding groove 302 to be connected to the wallboard fixing member 20, so that the detachable connection between the connecting base 50 and the wallboard fixing member 20 is realized.
Further, the third screw 203 is capable of reciprocating along the longitudinal direction of the horizontal chute 302. Here, the connection base 50 can drive the haute fine groove 40 and the connection member 30 to reciprocate along the length direction of the horizontal sliding groove 302 by the reciprocating movement of the third screw 203, that is, the connection member 30 can reciprocate in another direction perpendicular to the moving direction relative to the wallboard fixture 20, thereby realizing the multi-angle adjustment of the installation position of the large wallboard structure relative to the wallboard fixture 20.
Further, the wall plate fixing member 20 is a concrete structure, and one end of the third screw rod 203 is pre-buried in the concrete structure.
Specifically, the third screw 203 is pre-embedded in the concrete structure, and the other end of the third screw extends out of the wall plate fixing member 20 and passes through the connection base 50, where the third screw 203 does not move in practice, but the connection base 50 moves, so that the third screw 203 can reciprocate relative to the connection base 50.
Through the horizontal sliding groove 302, the hafen groove 40 and the vertical sliding groove 301 in the above embodiments and matching with related screw structures, the unit purlines 10 can be adjusted in position in multiple directions, up, down, front, back, left and right, relative to the wallboard fixing piece 20, so that complicated process adjustment such as cutting and welding after installation is avoided, and the installation quality of the metal plate curtain wall is effectively improved.
In addition, in order to improve the smoothness and stability of the unit purlins 10 in position adjustment in multiple directions, i.e., up, down, front, rear, left, and right, with respect to the wall panel fixing members 20, the two connecting members 30 are respectively disposed at opposite sides of the end portions of the unit purlins 10 close to the wall panel fixing members 20.
Specifically, the connecting pieces 30 are respectively arranged on the two opposite sides of the unit purlines 10, which are not provided with the metal sandwich board unit 101, and the smoothness and stability of the unit purlines 10, which are adjusted in position in multiple directions, up, down, front, back, left and right, relative to the wallboard fixing piece 20, can be effectively improved by arranging the haute filum grooves and the connecting bases in the above embodiments on the two sides.
It is to be understood that the terminology used in the embodiments of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three types of relationships may exist, e.g., a first component and/or a second component, may represent: the first component exists alone, the first component and the second component exist simultaneously, and the second component exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present invention to describe certain elements, these elements should not be limited by these terms. These terms are only used to distinguish one component from another. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element, without departing from the scope of embodiments of the present invention.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a monitoring", depending on the context. Similarly, the phrase "if it is determined" or "if it is monitored (a stated condition or event)" may be interpreted as "when determining" or "in response to determining" or "when monitoring (a stated condition or event)" or "in response to monitoring (a stated condition or event)", depending on the context.
In embodiments of the present invention, "substantially equal to", "substantially perpendicular", "substantially symmetrical", and the like, mean that the macroscopic size or relative positional relationship between the two features referred to is very close to the stated relationship. However, it is clear to those skilled in the art that the positional relationship of the object is difficult to be exactly constrained at small scale or even at microscopic angles due to the existence of objective factors such as errors, tolerances, etc. Therefore, even if a slight dot error exists in the size and position relationship between the two, the technical effect of the utility model is not greatly affected.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
In the various embodiments described above, while, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated by those of ordinary skill in the art that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by one of ordinary skill in the art.
Those of skill in the art would understand that information, signals, and data may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits (bits), symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
Those of skill would further appreciate that the various illustrative logical blocks, modules, units, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, units, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It should also be noted that those of ordinary skill in the art will appreciate that embodiments of the present invention set forth numerous technical details for the purpose of providing a better understanding of the present invention. However, the technical solutions claimed in the claims of the present invention can be basically implemented without these technical details and various changes and modifications based on the above-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the utility model.
In addition, those skilled in the art will appreciate that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a metal battenboard unit subassembly curtain connected node structure which characterized in that includes:
unit body purlines for connecting a plurality of metal sandwich board unit bodies;
the wall plate fixing piece is arranged below the unit purlines;
the connecting piece comprises connecting side plates and connecting bottom plates which are connected with each other, the connecting bottom plates are connected above the wallboard fixing pieces, vertical sliding grooves are formed in the connecting side plates, and first screw rods penetrate through the vertical sliding grooves to be connected with the end portions, close to the wallboard fixing pieces, of the unit purlines.
2. The metal sandwich panel unit assembly curtain wall connection node structure of claim 1, wherein the first screw is reciprocally movable in a height direction of the vertical sliding groove.
3. The curtain wall connecting node structure of the metal sandwich board unit assembly according to claim 1, wherein a hausen groove is arranged below the connecting bottom plate, the hausen groove is parallel to a plane where the connecting side plates are arranged, and the groove bottom of the hausen groove is connected above the wallboard fixing piece.
4. The metal sandwich panel unit assembly curtain wall connection node structure of claim 3, wherein a second screw rod is arranged in the Hafen groove, penetrates through the connection bottom plate, and can move back and forth along the length direction of the Hafen groove.
5. The metal sandwich panel unit assembly curtain wall connection node structure of claim 3, wherein a connection base is arranged below the Hafen groove, the bottom of the Hafen groove is connected to the connection base, and the connection base is arranged above the wallboard fixing piece.
6. The curtain wall connecting node structure of the metal sandwich panel unit assembly according to claim 5, wherein a horizontal sliding groove perpendicular to the connecting side plate is formed in the connecting base on one side of the hafen groove, and a third screw penetrates through the horizontal sliding groove to be connected to the wall plate fixing piece.
7. The metal sandwich panel unit assembly curtain wall connection node structure of claim 6, wherein the third screw is reciprocally movable along a length direction of the horizontal runner.
8. The metal sandwich panel unit assembly curtain wall connecting node structure of claim 6, wherein the wall panel fixing member is a concrete structure, and one end of the third screw rod is pre-buried in the concrete structure.
9. The metal sandwich panel unit assembly curtain wall connecting node structure of claim 1, wherein two of the connectors are disposed on opposite sides of the ends of the unit purlins adjacent to the wall panel fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010599.9U CN215519362U (en) | 2021-05-12 | 2021-05-12 | Curtain wall connecting node structure of metal sandwich plate unit component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010599.9U CN215519362U (en) | 2021-05-12 | 2021-05-12 | Curtain wall connecting node structure of metal sandwich plate unit component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215519362U true CN215519362U (en) | 2022-01-14 |
Family
ID=79804139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121010599.9U Active CN215519362U (en) | 2021-05-12 | 2021-05-12 | Curtain wall connecting node structure of metal sandwich plate unit component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215519362U (en) |
-
2021
- 2021-05-12 CN CN202121010599.9U patent/CN215519362U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105672539B (en) | A kind of stone material back of the body bolt suspension member and its application method | |
| CN108222392A (en) | External corner module and its assembly method | |
| CN215519362U (en) | Curtain wall connecting node structure of metal sandwich plate unit component | |
| CN204899252U (en) | Built -in fitting accuracy control regulator | |
| CN210395974U (en) | Wall body type plate dry-hanging wall surface | |
| CN208235841U (en) | External corner module | |
| CN113123497A (en) | Curtain wall system with metal sandwich board unit components and construction method thereof | |
| CN210482865U (en) | Wall veneer mounting structure with leveling system | |
| CN214884692U (en) | Curtain wall connecting node structure of metal sandwich plate unit component | |
| CN214833826U (en) | Curtain wall connecting node structure of metal sandwich plate unit component | |
| CN215519363U (en) | Curtain wall connecting node structure of metal sandwich plate unit component | |
| CN111779291A (en) | Component capable of reducing finished surface of wall surface and mounting mode thereof | |
| CN215106971U (en) | Stone material column bottom movable design receipts limit structure convenient to maintain | |
| CN214884693U (en) | Curtain wall system with metal sandwich board unit components | |
| CN100408792C (en) | Quick multiple dimension adjustable dry hanging skeleton member device | |
| CN113417418A (en) | Assembly type wall system with wall boards capable of being installed transversely and vertically in two directions and installation method of assembly type wall system | |
| CN209620577U (en) | Formwork fastening clips part and template mounting structure | |
| CN207974436U (en) | External corner connecting piece and outer corner component | |
| CN215510804U (en) | Assembling platform for unit bodies of metal sandwich plates | |
| CN219671852U (en) | A mounting structure that is used for independent frame-type bathroom wall to arrange closestool wallboard | |
| CN111379393A (en) | Connecting piece for fixing plate-shaped component, intermediate piece and fixing method | |
| CN211622666U (en) | Shelter side wall composite set | |
| CN217848294U (en) | Aircraft and antenna boom device thereof | |
| US20240125112A1 (en) | Construction method for trestle | |
| CN208650264U (en) | A kind of zigzag shape purlin and connection component being exclusively used in long-span roofing plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |