CN211137617U - Anchor type hanging nail for construction of prefabricated house - Google Patents
Anchor type hanging nail for construction of prefabricated house Download PDFInfo
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- CN211137617U CN211137617U CN201921936028.0U CN201921936028U CN211137617U CN 211137617 U CN211137617 U CN 211137617U CN 201921936028 U CN201921936028 U CN 201921936028U CN 211137617 U CN211137617 U CN 211137617U
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- hanging nail
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Abstract
The utility model discloses an anchor type hanging nail for prefabricated housing construction, which comprises a hanging nail body, wherein the hanging nail body comprises a hanging nail main rod piece, a lifting appliance clamping piece and a hanging nail anchoring piece; the hanging nail main rod piece, the lifting appliance clamping piece and the hanging nail anchoring piece are integrally pressed and formed, and the hanging nail main rod piece is of a cylindrical structure; the utility model discloses in, link firmly anchor type anchor piece through the position of being connected at hanging nail anchor piece and hanging nail main member, it is spacing to hanging the additional drag hook of nail to utilize anchor type anchor piece, and to exerting ascending effort, thereby can make and hang the horizontal reinforcement anchor of the additional drag hook of nail and reinforcing bar net, thereby can make two hang and be connected closely between the additional drag hook of nail and the reinforcing bar net, effectively increase and hang the lifting surface area who follows closely the body and hang the additional drag hook of nail, the bearing capacity who hangs nail body stress point has been strengthened, effectively improve the efficiency of lifting by crane to prefabricated wall body, reduce the probability that prefabricated wall body drops the damage at the in-process of lifting by crane.
Description
Technical Field
The utility model relates to a hang nail technical field, concretely relates to assembled house construction hangs nail with anchor type.
Background
The round head hanging nail is placed in the die through the semicircular concave sleeve head, and the concave sleeve head plays a role of fixing the hanging nail and forms a concave surface for connecting the universal joint after the prefabricated member is formed. After the wallboard prefabricated member is flatly placed and molded by casting, the prefabricated member needs to be hung and erected into an upright state so as to be conveniently placed, and the hanging needs assembly assistance to prevent the member from being damaged and falling accidents when the member is turned over, so that the damage risk is reduced. At present, the round head hanging nail is required to be used in an assembly type building, and in the hoisting process, the falling-off condition is easy to occur due to the round head hanging nail and the hanging nail attached drag hook, so that the prefabricated wall is damaged or the personal safety of people is harmed.
The nail is hung to some current button heads when using, be discoid because of hanging the bottom of nailing anchor piece, and can't guarantee at the in-process of construction that two adjacent hanging between the additional drag hook of nail interval are less than the diameter of hanging nail anchor piece bottom, lead to easily hanging nail anchor piece and hanging the additional drag hook of nail and break away from, cause prefabricated wall body at the in-process damage that drops that lifts by crane, and can't hang the nail installation at the button head and finish the back and effectively spacing to two hanging that the interval is big nail additional drag hooks, cause prefabricated wall body to drop the damage at the in-process that lifts by crane equally easily.
SUMMERY OF THE UTILITY MODEL
In order to overcome foretell technical problem, an object of the utility model is to provide an assembled house construction is with anchor type nail of hanging, link firmly anchor type anchor piece through the position of being connected at nail anchor piece and the nail main member of hanging, it is spacing to hanging the additional drag hook of nail to utilize anchor type anchor piece, and to exerting ascending effort, thereby can make the horizontal reinforcement anchor on hanging the additional drag hook of nail and the reinforcing bar net, thereby can make and be connected closely between two nail additional drag hooks and the reinforcing bar net, effectively increase the lifting nail body and hang the lifting nail area of additional drag hook, the bearing capacity who hangs nail body stress point has been strengthened, effectively improve the efficiency of lifting by crane to prefabricated wall body, reduce the probability that prefabricated wall body dropped the damage at the in-process of lifting by crane.
The purpose of the utility model can be realized by the following technical scheme:
an anchor type hanging nail for prefabricated house construction comprises a hanging nail body, wherein the hanging nail body comprises a hanging nail main rod piece, a lifting appliance clamping piece and a hanging nail anchoring piece; the hanging nail main rod piece, the lifting appliance clamping piece and the hanging nail anchoring piece are integrally pressed and formed, and the hanging nail main rod piece is of a cylindrical structure; the lifting appliance clamping piece and the lifting nail anchoring piece are respectively arranged at the end parts of two ends of the lifting nail main rod piece; an anchoring module is arranged at the connecting position of the hanging nail main rod piece and the hanging nail anchoring piece in a matched manner; wherein the content of the first and second substances,
the anchoring module comprises an anchor type anchoring piece; the middle part of the anchor-type anchoring piece is sleeved at the connecting position of the hanging nail main rod piece and the hanging nail anchoring piece, and the anchor-type anchoring piece is fixedly connected with the hanging nail main rod piece; when in use, the hanging nail body passes through the two hanging nail additional drag hooks, so that two ends of the anchor type anchoring piece on the hanging nail main rod piece respectively correspond to the two hanging nail additional drag hooks, the hanging nail body is placed in a mould through the semicircular concave sleeve head, the semicircular concave sleeve head plays a role of fixing the hanging nail body and forms a concave surface for connecting a universal joint after the prefabricated piece is formed, the semicircular concave sleeve head is connected with the lifting appliance clamping piece, at the moment, the end parts of the two ends of the anchor type anchoring piece cross the two hanging nail additional drag hooks, so that the two hanging nail additional drag hooks are respectively positioned on two sides of the hanging nail main rod piece and are in extrusion contact with two side walls of the anchor type anchoring piece, and the two hanging nail additional drag hooks are anchored with the horizontal steel bar on the steel bar net, thereby the two hanging nail additional drag hooks can be tightly connected with the steel bar net, and an upward acting force is applied to the steel bar net in the, the two hanging nail additional drag hooks and the reinforcing mesh are further connected tightly, the hanging nail additional drag hooks and the reinforcing mesh inside the prefabricated wall are mutually anchored, the stress area of the hanging nail body and the hanging nail additional drag hooks is effectively increased, the bearing capacity of stress points of the hanging nail body is enhanced, the lifting efficiency of the prefabricated wall is effectively improved, and the probability that the prefabricated wall is damaged when falling in the lifting process is reduced.
Further, the method comprises the following steps: the hanging nail bodies are made of Q235 type steel; the diameter of the hanging nail main rod piece is 16mm, and the length of the hanging nail main rod piece is 200 mm.
Further, the method comprises the following steps: the hoist card is discoid structure, and the diameter of hoist card is 25mm, and the thickness of hoist card is 5 mm.
Further, the method comprises the following steps: the big end of the hanging nail anchoring piece is of a disc-shaped structure, the diameter of the big end of the hanging nail anchoring piece is 35mm, and the thickness of the big end of the hanging nail anchoring piece is 5 mm; the big end that utilizes hanging nail anchor piece can carry on spacingly to two mutual parallel arrangement's reinforcing bar to can be convenient for constructor anchor reinforcing bar net, improve work efficiency.
Further, the method comprises the following steps: the anchoring module also comprises a first anchoring block, a second anchoring block and a limiting baffle; the first anchoring block and the second anchoring block are both arc-shaped structures, the large end of the first anchoring block is contacted with the small end of the second anchoring block to form a semi-arc-shaped structure, and one side of the large end of the first anchoring block and one side of the large end of the second anchoring block are fixedly connected with a limit baffle; a first notch is formed in the middle of one side of the first anchoring block, and a second notch is formed in the middle of one side, adjacent to the first anchoring block, of the second anchoring block; the first gap and the second gap are the same in shape and size; when the distance between the two hanging nail additional draw hooks is larger than the outer diameter of the big end of the hanging nail anchoring piece, the first notch on the first anchoring block and the second notch on the second anchoring block are respectively contacted with the outer cylindrical surface of the hanging nail main rod piece, then the first anchoring block is contacted with the second anchoring block, so that the small end of the first anchoring block is contacted with the big end of the second anchoring block, meanwhile, the small end of the second anchoring block is contacted with the big end of the first anchoring block, the limit baffle limits the small ends of the two anchoring blocks, the positions of the small ends of the two anchoring blocks are kept unchanged, then the semi-circular arc structure formed by the first anchoring block and the second anchoring block anchors the two hanging nail additional draw hooks, thereby utilizing the first anchoring block and the second anchoring block to increase the contact area between the hanging nail body and the hanging nail additional draw hooks, and selecting the first anchoring block and the second anchoring block according to requirements, the construction cost is reduced, and the application range of the anchor type hanging nail is enlarged.
The hook comprises a limiting baffle L and is further characterized in that the limiting baffle is of a plate-shaped structure, the difference between the width of the outer side of the limiting baffle and the thickness of a first anchoring block is smaller than the length of the inner side of a first gap, the limiting baffle is arranged at the corner position of the large end of the first anchoring block and a second anchoring block, the small end of the two anchoring blocks can be limited after the first anchoring block and the second anchoring block form a semi-arc structure, the situation that the two anchoring blocks laterally move to cause falling off after being contacted with each other can be avoided, the stability of connection between the first anchoring block and the second anchoring block can be improved, the normal use of the first anchoring block and the second anchoring block is guaranteed, when the first gap and the second gap are just contacted with a hanging nail main rod piece, the first gap and the second gap are in a staggered state, then the first anchoring block and the second anchoring block are pushed to be close to each other, when the first gap and the second gap are just aligned, the first anchoring block and the second anchoring block are combined, the two anchoring blocks are additionally exerted with reactive force by a hanging nail, the first anchoring block and the second anchoring block are connected with the second gap in an extrusion mode, and the hook is convenient to use.
The utility model has the advantages that:
1. the anchor type anchoring pieces are fixedly connected with the connecting parts of the hanging nail anchoring pieces and the hanging nail main rod pieces, the hanging nail additional drag hooks are limited by the anchor type anchoring pieces, upward acting force is exerted, horizontal steel bar anchoring on the hanging nail additional drag hooks and the steel bar net can be realized, connection between the two hanging nail additional drag hooks and the steel bar net can be realized tightly, the stress area of the hanging nail body and the hanging nail additional drag hooks is effectively increased, the bearing capacity of stress points of the hanging nail body is enhanced, the lifting efficiency of the prefabricated wall body is effectively improved, and the probability that the prefabricated wall body is damaged by falling in the lifting process is reduced.
2. The two hanging nail additional drag hooks are anchored through the semicircular arc structure formed by the first anchoring block and the second anchoring block, so that the hanging nail additional drag hooks with large space can be connected after the hanging nail body is installed, the construction cost is reduced, the application range of the anchor type hanging nail is enlarged, and the efficiency of limiting the two hanging nail additional drag hooks with large space is improved; through arranging limit baffle in the corner position department of first anchor piece and second anchor piece main aspects, can carry on spacingly to the tip of two anchor pieces after first anchor piece becomes half circular arc-shaped structure with the second anchor piece to can avoid two anchor pieces to appear moving the condition that leads to droing of sidesway after contacting each other, and then can improve the stability that first anchor piece and second anchor piece are connected, guarantee the normal use of first anchor piece and second anchor piece.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a front view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a schematic structural view of the middle suspension nail body of the present invention;
FIG. 4 is a schematic structural view of the connection between the middle suspension nail body and the anchoring module of the present invention;
FIG. 5 is a schematic structural view of the first anchoring block and the limiting baffle of the present invention;
FIG. 6 is a schematic structural view of a first anchor block of the present invention;
fig. 7 is an exploded view of the anchoring module of the present invention;
FIG. 8 is a schematic view of the installation state of the middle suspension nail body of the present invention;
FIG. 9 is a schematic plan view of the installation of the middle suspension nail body of the present invention;
FIG. 10 is a schematic cross-sectional view taken at A-A in FIG. 9;
FIG. 11 is a schematic cross-sectional view taken at B-B of FIG. 9;
in the figure: 100. a hanging nail body; 110. hanging and nailing the main rod piece; 120. a hanger card; 130. hanging and nailing the anchoring piece; 200. an anchoring module; 210. an anchor-type anchor tab; 220. a first anchor block; 221. a first notch; 230. a second anchor block; 231. a second notch; 240. a limit baffle; 300. prefabricating a wall body; 400. a reinforcing mesh; 500. the hanging nail is attached with a draw hook.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 11, an anchor type hanging nail for prefabricated housing construction includes a hanging nail body 100, the hanging nail body 100 includes a hanging nail main rod 110, a hanger clamping piece 120 and a hanging nail anchoring piece 130; the hanging nail main rod piece 110, the lifting appliance clamping piece 120 and the hanging nail anchoring piece 130 are integrally pressed and formed, and the hanging nail main rod piece 110 is of a cylindrical structure; the hanger clamping sheet 120 and the hanging nail anchoring sheet 130 are respectively arranged at the end parts of the two ends of the hanging nail main rod 110; the connecting position of the hanging nail main rod piece 110 and the hanging nail anchoring piece 130 is provided with an anchoring module 200 in a matching way; wherein the content of the first and second substances,
the anchoring module 200 includes an anchor-type anchor tab 210; the middle part of the anchor-type anchoring piece 210 is sleeved at the connecting position of the hanging nail main rod piece 110 and the hanging nail anchoring piece 130, and the anchor-type anchoring piece 210 is fixedly connected with the hanging nail main rod piece 110; when the device is used, the lifting nail body 100 passes through the two lifting nail additional draw hooks 500, so that the two ends of the anchor-type anchoring piece 210 on the lifting nail main rod piece 110 respectively correspond to the two lifting nail additional draw hooks 500, the lifting nail main rod piece is placed in a mould through the semicircular concave sleeve head, the semicircular concave sleeve head plays a role of fixing the lifting nail body 100 and forms a concave surface for connecting a universal joint after the prefabricated piece is formed, the semicircular concave sleeve head is connected with the lifting tool clamping piece 120, at the moment, the end parts of the two ends of the anchor-type anchoring piece 210 cross the two lifting nail additional draw hooks 500, so that the two lifting nail additional draw hooks 500 are respectively positioned at the two sides of the lifting nail main rod piece 110 and are in extrusion contact with the two side walls of the anchor-type anchoring piece 210, and the two lifting nail additional draw hooks 500 are anchored with the horizontal steel bar on the steel bar net 400, therefore, the two lifting nail additional draw hooks 500 can be tightly connected with the steel bar net 400, and an upward acting, the two hanging nail additional draw hooks 500 are further closely connected with the reinforcing mesh 400, the hanging nail additional draw hooks 500 are mutually anchored with the reinforcing mesh 400 inside the prefabricated wall body 300, the stress areas of the hanging nail body 100 and the hanging nail additional draw hooks 500 are effectively increased, the bearing capacity of stress points of the hanging nail body 100 is enhanced, the lifting efficiency of the prefabricated wall body 300 is effectively improved, and the probability that the prefabricated wall body 300 is damaged due to falling in the lifting process is reduced.
The hanging nail bodies 100 are made of Q235 type steel; the diameter of the hanging nail main rod piece 110 is 16mm, and the length of the hanging nail main rod piece 110 is 200 mm; the lifting appliance clamping piece 120 is of a disc-shaped structure, the diameter of the lifting appliance clamping piece 120 is 25mm, and the thickness of the lifting appliance clamping piece 120 is 5 mm; the big end of the hanging nail anchoring piece 130 is of a disc-shaped structure, the diameter of the big end of the hanging nail anchoring piece 130 is 35mm, and the thickness of the big end of the hanging nail anchoring piece 130 is 5 mm; the big end of the anchor sheet 130 can be used for limiting two reinforcing steel bars arranged in parallel, so that the construction personnel can anchor the reinforcing mesh 400 conveniently, and the working efficiency is improved.
The anchoring module 200 further comprises a first anchoring block 220, a second anchoring block 230 and a limiting baffle 240, the first anchoring block 220 and the second anchoring block 230 are both arc-shaped structures, the large end of the first anchoring block 220 is in contact with the small end of the second anchoring block 230 to form a semi-circular arc-shaped structure, the limiting baffle 240 is fixedly connected to one side of the large end of the first anchoring block 220 and one side of the large end of the second anchoring block 230, a first notch 221 is formed in the middle of one side of the first anchoring block 220, a second notch 231 is formed in the middle of one side, adjacent to the first anchoring block 220, of the second anchoring block 230, the first notch 221 and the second notch 231 are identical in shape and size, when the distance between the two hook attachments 500 is larger than the outer diameter of the large end of the hook 130, the first notch 221 on the first anchoring block 220 and the second notch 231 on the second anchoring block 230 can be respectively in contact with the outer side of the main rod 110, the first notch 230 and the second notch 230 can be in contact with the outer side of the main rod piece 230, the first anchoring block 220 and the second anchor 220, the first notch 220 and the second anchor 220 can be conveniently pushed by the first hook, the two hooks 220 and the first anchor block 220 and the second anchor 220 when the two hooks are in the contact state, the large end of the first anchor block 220, the first anchor 220, the first anchor 220 and the second anchor 220, the anchor 220 and the anchor 220, the anchor 220 can be conveniently connected with the anchor 220, the anchor block, the anchor 220, the anchor blocks are conveniently push the anchor blocks, the anchor blocks are in the anchor blocks, the.
The connection position of the hanging nail anchoring piece 130 and the hanging nail main rod piece 110 is arc-shaped, so that the connection strength of the hanging nail anchoring piece 130 and the hanging nail main rod piece 110 can be increased.
The working principle is as follows: when the device is used, the lifting nail body 100 passes through the two lifting nail additional draw hooks 500, so that the two ends of the anchor-type anchoring piece 210 on the lifting nail main rod piece 110 respectively correspond to the two lifting nail additional draw hooks 500, the lifting nail main rod piece is placed in a mould through the semicircular concave sleeve head, the semicircular concave sleeve head plays a role of fixing the lifting nail body 100 and forms a concave surface for connecting a universal joint after the prefabricated piece is formed, the semicircular concave sleeve head is connected with the lifting tool clamping piece 120, at the moment, the end parts of the two ends of the anchor-type anchoring piece 210 cross the two lifting nail additional draw hooks 500, so that the two lifting nail additional draw hooks 500 are respectively positioned at the two sides of the lifting nail main rod piece 110 and are in extrusion contact with the two side walls of the anchor-type anchoring piece 210, and the two lifting nail additional draw hooks 500 are anchored with the horizontal steel bar on the steel bar net 400, therefore, the two lifting nail additional draw hooks 500 can be tightly connected with the steel bar net 400, and an upward acting, the two hanging nail additional draw hooks 500 are further connected with the reinforcing mesh 400 tightly, the hanging nail additional draw hooks 500 are mutually anchored with the reinforcing mesh 400 in the prefabricated wall 300, the stress areas of the hanging nail body 100 and the hanging nail additional draw hooks 500 are effectively increased, and the bearing capacity of the stress point of the hanging nail body 100 is enhanced.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (6)
1. The anchor type hanging nail for the assembly type residential construction is characterized by comprising a hanging nail body (100), wherein the hanging nail body (100) comprises a hanging nail main rod piece (110), a hanger clamping piece (120) and a hanging nail anchoring piece (130); the hanging nail main rod piece (110), the lifting appliance clamping piece (120) and the hanging nail anchoring piece (130) are integrally pressed and formed, and the hanging nail main rod piece (110) is of a cylindrical structure; the lifting appliance clamping sheet (120) and the lifting nail anchoring sheet (130) are respectively arranged at the end parts of two ends of the lifting nail main rod piece (110); an anchoring module (200) is arranged at the connecting position of the hanging nail main rod piece (110) and the hanging nail anchoring piece (130) in a matched manner; wherein the content of the first and second substances,
the anchoring module (200) comprises an anchor-type anchor tab (210); the middle part of the anchor type anchoring piece (210) is sleeved at the connecting position of the hanging nail main rod piece (110) and the hanging nail anchoring piece (130), and the anchor type anchoring piece (210) is fixedly connected with the hanging nail main rod piece (110).
2. The anchor type hanging nail for the construction of fabricated residences according to claim 1, wherein the hanging nail bodies (100) are made of Q235 type steel; the diameter of the hanging nail main rod piece (110) is 16mm, and the length of the hanging nail main rod piece (110) is 200 mm.
3. An anchor nail for prefabricated housing construction according to claim 1, wherein the hanger clamping piece (120) is a disc-shaped structure, the diameter of the hanger clamping piece (120) is 25mm, and the thickness of the hanger clamping piece (120) is 5 mm.
4. An anchor type hanging nail for construction of fabricated dwelling as claimed in claim 1, wherein the big end of the hanging nail anchoring piece (130) is a disc-shaped structure, the diameter of the big end of the hanging nail anchoring piece (130) is 35mm, and the thickness of the big end of the hanging nail anchoring piece (130) is 5 mm.
5. An anchor-type hanger nail for construction of fabricated residences according to claim 1, wherein the anchor module (200) further comprises a first anchor block (220), a second anchor block (230), and a position-limiting barrier (240); the first anchoring block (220) and the second anchoring block (230) are both arc-shaped structures, the large end of the first anchoring block (220) is in contact with the small end of the second anchoring block (230) to form a semi-arc-shaped structure, and one side of the large end of the first anchoring block (220) and one side of the large end of the second anchoring block (230) are fixedly connected with a limit baffle (240); a first notch (221) is formed in the middle of one side of the first anchoring block (220), and a second notch (231) is formed in the middle of one side, adjacent to the first anchoring block (220), of the second anchoring block (230); the first gap (221) and the second gap (231) are the same in shape and size.
6. An anchor-type hanger nail for construction of fabricated dwelling as claimed in claim 5, wherein the position-limiting baffle 240 is a L-type plate structure, and the difference between the width of the outer side of the position-limiting baffle 240 and the thickness of the first anchor block 220 is smaller than the length of the inner side of the first notch 221.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921936028.0U CN211137617U (en) | 2019-11-11 | 2019-11-11 | Anchor type hanging nail for construction of prefabricated house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921936028.0U CN211137617U (en) | 2019-11-11 | 2019-11-11 | Anchor type hanging nail for construction of prefabricated house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211137617U true CN211137617U (en) | 2020-07-31 |
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ID=71775044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921936028.0U Expired - Fee Related CN211137617U (en) | 2019-11-11 | 2019-11-11 | Anchor type hanging nail for construction of prefabricated house |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211137617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576727A (en) * | 2020-05-29 | 2020-08-25 | 中国十七冶集团有限公司 | PC component that contains anchor shape and hangs nail |
| CN113502972A (en) * | 2021-02-07 | 2021-10-15 | 北京市住宅产业化集团股份有限公司 | Longitudinal rib hollow wall, hanging nail connecting joint thereof and design construction method |
-
2019
- 2019-11-11 CN CN201921936028.0U patent/CN211137617U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576727A (en) * | 2020-05-29 | 2020-08-25 | 中国十七冶集团有限公司 | PC component that contains anchor shape and hangs nail |
| CN113502972A (en) * | 2021-02-07 | 2021-10-15 | 北京市住宅产业化集团股份有限公司 | Longitudinal rib hollow wall, hanging nail connecting joint thereof and design construction method |
| CN113502972B (en) * | 2021-02-07 | 2022-09-16 | 北京市住宅产业化集团股份有限公司 | Design and construction method for hanging nail connecting joint of longitudinal rib hollow wall |
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Granted publication date: 20200731 Termination date: 20211111 |