CN110847631A - Supporting base for mounting I-shaped steel column - Google Patents
Supporting base for mounting I-shaped steel column Download PDFInfo
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- CN110847631A CN110847631A CN201911166446.0A CN201911166446A CN110847631A CN 110847631 A CN110847631 A CN 110847631A CN 201911166446 A CN201911166446 A CN 201911166446A CN 110847631 A CN110847631 A CN 110847631A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
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Abstract
The invention discloses a supporting base for mounting an I-shaped steel column, and relates to the technical field of construction machinery. The invention comprises an I-shaped steel column, a bottom plate and a seat body; the seat body is fixedly connected to the upper surface of the bottom plate; the upper surface of the seat body is provided with an I-shaped groove matched with the I-shaped steel column; a pair of slots are symmetrically arranged in the middle of the base; the two slots are respectively arranged at the opposite sides of the I-shaped groove; a pair of side supporting blocks are symmetrically arranged above the seat body; the two side supporting blocks comprise inserting parts and supporting parts; the two insertion parts correspond to the two slots one by one, and each insertion part is matched in the corresponding slot. According to the invention, the I-shaped steel column is arranged on the seat body, and the I-shaped steel column is supported and fastened by the cooperation of the side supporting block, the extrusion component and the pressing sheet, so that the I-shaped steel column is fixed, and the installation effect of the I-shaped steel column is effectively improved.
Description
Technical Field
The invention belongs to the technical field of construction machinery, and particularly relates to a supporting base for mounting an I-shaped steel column.
Background
In steel structural building design, i-shaped steel columns are typically used to support the entire building structure. In the prior art, the I-shaped steel column is usually connected with a ground concrete platform through bolts to fix the I-shaped steel column, and although the bolt connection mode is simple and convenient, the support and limiting area of the I-shaped steel column is small, the I-shaped steel column can swing along with wind in windy weather, and even be blown down, so that unnecessary property loss is caused or life safety of people is threatened. Therefore, there is a need to design a supporting base for mounting of the section steel column so as to solve the above problems.
Disclosure of Invention
The invention aims to design a supporting base for mounting an I-shaped steel column, wherein the I-shaped steel column is mounted on a base body, and the I-shaped steel column is supported and fastened by matching of a side supporting block, an extrusion part and a pressing sheet, so that the I-shaped steel column is fixed, the mounting effect of the I-shaped steel column is effectively improved, and the problems in the background art are solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a supporting base for mounting an I-shaped steel column, which comprises the I-shaped steel column, a bottom plate and a base body; the seat body is fixedly connected to the upper surface of the bottom plate; the upper surface of the seat body is provided with an I-shaped groove matched with the I-shaped steel column; a pair of slots is symmetrically arranged in the middle of the base; the two slots are respectively arranged at the opposite sides of the I-shaped groove; a pair of side supporting blocks are symmetrically arranged above the seat body; the two side supporting blocks comprise inserting parts and supporting parts; the two insertion parts correspond to the two slots one by one, and each insertion part is matched in the corresponding slot; the opposite inner side surfaces of the two supporting parts are respectively provided with a guide groove; one opposite side surface of each guide groove is provided with guide holes in parallel along the length direction; a guide component is arranged in the guide groove; the opposite sides of the guide part are provided with locking columns which correspond to the guide holes in parallel along the length direction; the locking column is matched in the guide hole; the outer end of the locking column is abutted against the side wall of the I-shaped steel column; the upper parts of the two side supporting blocks are respectively provided with an extrusion component; the two extrusion parts are respectively arranged on one opposite side of the I-shaped steel column; the extrusion component is connected to the side supporting block through a first connecting piece; the two extrusion parts are connected through a fastening part; pressing sheets are arranged on the opposite inner sides of the two extrusion parts; the opposite inner side surfaces of the two pressing sheets are respectively attached to one opposite side wall of the I-shaped steel column; the pressing sheet is connected to the pressing member through a second connecting member.
Preferably, at least one welding hole is formed in at least one opposite side wall of the base.
Preferably, the lower ends of the two pressing sheets extend to the opposite inner sides of the two supporting parts and are abutted against the upper surface of the seat body; the lower end parts of the two pressing sheets are respectively connected with the lower end parts of the two supporting parts through a third connecting piece.
Preferably, the opposite outer side surfaces of the two pressing sheets are respectively provided with at least one mounting groove; mounting bars corresponding to the mounting grooves are arranged on the opposite inner side surfaces of the two supporting parts; the mounting bar is slidably mounted in the mounting groove.
Preferably, the opposite side surfaces of the two supporting parts are respectively provided with at least one first matching hole; the opposite side surfaces of the two pressing sheets are provided with second matching holes corresponding to the first matching holes; the third connecting piece passes through the first matching hole and is inserted into the second matching hole.
Preferably, both the extrusion parts are in a structure like a Chinese character 'ji'; the opposite inner sides of the middle parts of the two extrusion parts are respectively attached to the opposite outer sides of the two pressing sheets, and the middle parts of the two extrusion parts are respectively provided with at least one first positioning hole; the opposite side surfaces of the two pressing sheets are provided with second positioning holes corresponding to the first positioning holes; the second connecting piece penetrates through the first positioning hole and is inserted into the second positioning hole.
Preferably, the upper end parts of the two supporting parts are respectively provided with at least one first connecting hole; the lower parts of the two extrusion parts are respectively provided with a second connecting hole corresponding to the first connecting hole; the first connecting piece penetrates through the second connecting hole and is inserted into the first connecting hole.
Preferably, the upper part of the guide part is rotatably connected with an adjusting column; the top surface of the guide groove is provided with an adjusting hole matched with the adjusting column; the adjusting hole is in threaded fit with the adjusting column; the upper end of the adjusting column penetrates through the adjusting hole; the lower part of the extrusion component is provided with a limiting hole corresponding to the position of the adjusting column; the upper end of the adjusting column is inserted into the adjusting column; the positioning column is in clearance fit with the limiting hole.
Preferably, the guide member comprises a guide plate; the guide plate is slidably arranged in the guide groove; isosceles trapezoid blocks corresponding to the locking columns are fixed on one surface of the guide plate in parallel along the length direction; the inner ends of the locking columns on the two sides of the isosceles trapezoid block are respectively abutted to the two inclined planes of the isosceles trapezoid block.
Preferably, a ball is embedded in the inner end face of the locking column; the outer surface of the ball is matched with the inclined surface of the isosceles trapezoid block.
The invention has the following beneficial effects:
according to the invention, the I-shaped steel column is arranged on the seat body, the I-shaped steel column is supported and fastened by the cooperation of the side supporting block, the extruding part and the pressing sheet, and the locking column is further used for supporting the I-shaped steel column, so that the I-shaped steel column is fixed, the supporting and limiting area of the I-shaped steel column is effectively increased, the connecting strength of the I-shaped steel column and the ground concrete platform is improved, the problem that the I-shaped steel column swings or is blown down along with the wind in strong wind weather is avoided, and the H-shaped steel column has higher market application value.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a support base for mounting an i-shaped steel column according to the present invention;
FIG. 2 is a front view of the structure of FIG. 1;
FIG. 3 is a top view of the structure of FIG. 1;
FIG. 4 is a schematic view of the side stay installed on the base of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4;
FIG. 6 is a schematic view of the press sheet of the present invention mounted on the side supporting block;
FIG. 7 is a schematic view of the structure of the guide member of the present invention mounted to the side brace;
FIG. 8 is a front view of the structure of FIG. 7;
FIG. 9 is a schematic view of the locking post of the present invention mounted to a side brace;
FIG. 10 is a schematic structural view of the seat body of the present invention;
FIG. 11 is a top view of the structure of FIG. 10;
FIG. 12 is a schematic structural view of a side brace of the present invention;
FIG. 13 is a schematic view of the structure of the guide member of the present invention;
FIG. 14 is a schematic view of the structure of the pressing member of the present invention;
fig. 15 is a schematic view of the structure of the tablet of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-I-shaped steel column, 2-bottom plate, 3-seat body, 4-side supporting block, 5-guiding component, 6-locking column, 7-extruding component, 8-fastening component, 9-pressing sheet, 10-adjusting column, 11-ball, 301-I-shaped groove, 302-slot, 303-welding hole, 401-inserting part, 402-supporting part, 501-guiding plate, 502-isosceles trapezoid block, 503-connecting block, 701-first positioning hole, 702-second connecting hole, 703-limiting hole, 901-mounting groove, 902-second matching hole, 903-second positioning hole, 4021-guiding groove, 4022-guiding hole, 4023-mounting bar, 4024-first matching hole, 4025-first connecting hole and 4056-adjusting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 15, the present invention relates to a supporting base for mounting an i-shaped steel column, which includes an i-shaped steel column 1, a bottom plate 2 and a base body 3 in an i-shaped structure; the seat body 3 is fixedly connected to the upper surface of the bottom plate 2; the upper surface of the seat body 3 is provided with an I-shaped groove 301 matched with the I-shaped steel column 1; the middle part of the base 3 is symmetrically and fixedly connected with a pair of inserting plates; the two plug boards and the middle part of the base 3 form a slot 302 respectively; the two slots 302 are respectively arranged at the opposite sides of the I-shaped groove 301;
a pair of side supporting blocks 4 are symmetrically arranged above the seat body 3; the two side supporting blocks 4 comprise inserting parts 401 and supporting parts 402; the two insertion parts 401 correspond to the two slots 302 one by one, and each insertion part 401 is in interference fit with the corresponding slot 302; the opposite inner side surfaces of the two supporting parts 402 are vertically provided with a guide groove 4021; one opposite side surface of the guide groove 4021 is provided with guide holes 4022 in parallel along the length direction; a guide part 5 is arranged in the guide groove 4021; the opposite sides of the guide part 5 are provided with locking columns 6 corresponding to the guide holes 4022 in parallel along the length direction; an acute angle formed between the upper surface of the locking column 6 and the horizontal plane is 15 degrees; the locking post 6 is in sliding fit in the guide hole 4022, and sliding friction exists between the outer surface of the locking post 6 and the inner wall of the guide hole 4022, and the sliding friction is designed to ensure that the locking post 6 can only move along the length direction of the guide hole 4022 by virtue of the pushing force given by the guide part 5; the outer end of the locking column 6 is abutted against the side wall of the I-shaped steel column;
the upper parts of the two side supporting blocks 4 are respectively provided with an extrusion component 7 in a structure like a Chinese character 'ji'; the two extrusion parts 7 are respectively arranged on one opposite side of the I-shaped steel column 1; the extrusion part 7 is connected to the side supporting block 4 through a first connecting piece; the two extrusion parts 7 are connected through four fastening parts 8; the opposite inner sides of the two extrusion parts 7 are respectively provided with a pressing sheet 9; the opposite inner side surfaces of the two pressing sheets 9 are respectively attached to one opposite side wall of the I-shaped steel column 1; the pressing plate 9 is connected to the pressing member 7 through a second connecting member.
Specifically, a pair of welding holes 303 are formed in parallel on an opposite side wall of the base 3. After the lower end of the i-shaped steel column 1 is inserted into the i-shaped groove 301, the i-shaped steel column 1 and the side wall of the welding hole 303 are welded together by adopting a welding technology, so that the i-shaped steel column 1 and the base 3 are stably connected.
Specifically, the lower ends of the two pressing plates 9 extend to the opposite inner sides of the two supporting parts 402 and are abutted against the upper surface of the seat body 3; the lower ends of the two pressing sheets 9 are respectively connected with the lower ends of the two supporting parts 402 through a third connecting piece; the opposite side surfaces of the two supporting parts 402 are both provided with a first matching hole 4024; the opposite side surfaces of the two pressing sheets 9 are both provided with second matching holes 902 corresponding to the first matching holes 4024; the second mating hole 902 is a blind hole; the third connecting piece is a connecting stud, one end of the connecting stud passes through the first matching hole 4024 and is inserted into the second matching hole 902, and the connecting stud is in threaded fit with the first matching hole 4024 and the second matching hole 902;
specifically, a pair of mounting grooves 901 are formed in parallel on the opposite outer side surfaces of the two pressing plates 9; the opposite inner side surfaces of the two supporting parts 402 are respectively provided with an installation bar 4023 corresponding to the installation groove 901; two mounting bars 4023 are provided at opposite sides of the guide groove 4021; the mounting bar 4023 is slidably mounted in the mounting groove 901.
Specifically, the opposite inner side surfaces of the middle parts of the two extrusion parts 7 are respectively attached to the opposite outer side surfaces of the two pressing sheets 9, and the middle parts of the two extrusion parts 7 are both provided with a first positioning hole 701; the opposite side surfaces of the two pressing sheets 9 are respectively provided with a second positioning hole 903 corresponding to the first positioning hole 701; the second positioning hole 903 is a blind hole; the second connecting member is a connecting stud, one end of the connecting stud passes through the first positioning hole 701 and is inserted into the second positioning hole 903, and the connecting stud is in threaded fit with both the first positioning hole 701 and the second positioning hole 903.
Specifically, a pair of first connection holes 4025 are formed in the upper end portions of the two supporting portions 402 in parallel; the first connecting hole 4025 is a blind hole; the lower parts of the two extrusion parts 7 are both provided with second connecting holes 702 corresponding to the first connecting holes 4025; the first connecting piece is a connecting stud, one end of the connecting stud passes through the second connecting hole 702 and is inserted into the first connecting hole 4025, and the connecting stud is in threaded fit with the first connecting hole 4025 and the first connecting hole 4025.
Specifically, the upper part of the guide part 5 is rotatably connected with an adjusting column 10; the top surface of the guide groove 4021 is provided with an adjusting hole 4056 matched with the adjusting column 10; the adjusting hole 4056 is in threaded fit with the adjusting column 10; the upper end of the adjusting column 10 penetrates through the adjusting hole 4056; the lower part of the extrusion component 7 is provided with a limit hole 703 corresponding to the position of the adjusting column 10; the limiting hole 703 is a blind hole; the upper end of the adjusting column 10 is inserted into the adjusting column 10; the positioning post 7 is in clearance fit with the limiting hole 703.
Specifically, the guide member 5 includes a guide plate 501; the guide plate 501 is slidably mounted in the guide groove 4021; an isosceles trapezoid block 502 corresponding to the locking column 6 is fixed on one surface of the guide plate 501 side by side along the length direction; two adjacent isosceles trapezoid blocks 502 are connected through a connecting block 503; the inner ends of the locking columns 6 at the two sides of the isosceles trapezoid block 502 are respectively abutted against the two inclined surfaces of the isosceles trapezoid block 502; a ball 11 is embedded in the inner end surface of the locking column 6; the ball 11 is matched with the locking column 6 in a rolling way; the outer surface of the ball 11 is engaged with the inclined surface of the isosceles trapezoid block 502.
Specifically, the fastening part 8 comprises a fastening stud and two pairs of fastening nuts sleeved on the fastening stud side by side; the fastening studs are inserted at the end parts of the two extrusion parts 7 and are connected with the extrusion parts 7 through fastening nuts; a tension spring is sleeved on the fastening stud; the tensioning spring is arranged between the two pairs of fastening nuts.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A supporting base for mounting an I-shaped steel column comprises an I-shaped steel column (1), a bottom plate (2) and a base body (3); the seat body (3) is fixedly connected to the upper surface of the bottom plate (2); the method is characterized in that:
the upper surface of the seat body (3) is provided with an I-shaped groove (301) matched with the I-shaped steel column (1); a pair of slots (302) is symmetrically arranged in the middle of the base (3); the two slots (302) are respectively arranged at the opposite sides of the I-shaped groove (301);
a pair of side supporting blocks (4) are symmetrically arranged above the base body (3); the two side supporting blocks (4) respectively comprise an inserting part (401) and a supporting part (402); the two insertion parts (401) correspond to the two slots (302) one by one, and each insertion part (401) is matched in the corresponding slot (302);
the opposite inner side surfaces of the two supporting parts (402) are respectively provided with a guide groove (4021); one opposite side surface of each guide groove (4021) is provided with guide holes (4022) in parallel along the length direction; a guide component (5) is arranged in the guide groove (4021);
locking columns (6) corresponding to the guide holes (4022) are arranged on the opposite sides of the guide component (5) in parallel along the length direction; the locking column (6) is matched in the guide hole (4022); the outer end of the locking column (6) is abutted against the side wall of the I-shaped steel column;
the upper parts of the two side supporting blocks (4) are respectively provided with an extrusion part (7); the two extrusion parts (7) are respectively arranged on one opposite side of the I-shaped steel column (1); the extrusion part (7) is connected to the side supporting block (4) through a first connecting piece; the two extrusion parts (7) are connected through a fastening part (8);
pressing sheets (9) are arranged on the opposite inner sides of the two extrusion parts (7); the opposite inner side surfaces of the two pressing sheets (9) are respectively attached to one opposite side wall of the I-shaped steel column (1); the pressing sheet (9) is connected to the extrusion part (7) through a second connecting piece.
2. The support base for i-steel column installation according to claim 1, wherein at least one welding hole (303) is formed on at least one opposite side wall of the base (3).
3. The support base for the mounting of i-shaped steel columns according to claim 1, characterized in that the lower ends of the two pressing plates (9) extend to the opposite inner sides of the two support parts (402) and are against the upper surface of the seat body (3); the lower ends of the two pressing sheets (9) are respectively connected with the lower ends of the two supporting parts (402) through a third connecting piece.
4. The supporting base for mounting the I-shaped steel column as claimed in claim 3, wherein at least one mounting groove (901) is formed on each of the outer opposite sides of the two pressing sheets (9); mounting bars (4023) corresponding to the mounting grooves (901) are arranged on the opposite inner side surfaces of the two supporting parts (402); the mounting bar (4023) is mounted in the mounting groove (901) in a sliding manner.
5. The support base for mounting the I-shaped steel column as claimed in claim 3 or 4, wherein at least one first mating hole (4024) is formed in each of opposite side surfaces of the two support portions (402); the opposite side surfaces of the two pressing sheets (9) are respectively provided with a second matching hole (902) corresponding to the first matching hole (4024); the third connecting piece passes through the first matching hole (4024) and is inserted into the second matching hole (902).
6. The support foot for i-shaped steel column installation according to any one of claims 1 to 4, wherein both of the pressing members (7) are in a structure of a Chinese character 'ji'; the opposite inner sides of the middle parts of the two extrusion parts (7) are respectively attached to the opposite outer sides of the two pressing sheets (9), and at least one first positioning hole (701) is formed in the middle part of each extrusion part (7); the opposite side surfaces of the two pressing sheets (9) are respectively provided with a second positioning hole (903) corresponding to the first positioning hole (701); the second connecting piece penetrates through the first positioning hole (701) and is inserted into the second positioning hole (903).
7. The support base for mounting of I-shaped steel columns according to claim 6, wherein at least one first connection hole (4025) is formed at the upper end of each of the two support parts (402); the lower parts of the two extrusion parts (7) are respectively provided with a second connecting hole (702) corresponding to the first connecting hole (4025); the first connecting piece penetrates through the second connecting hole (702) to be plugged into the first connecting hole (4025).
8. Support base for the installation of section steel columns according to claim 1 or 2 or 3 or 4 or 7, characterized in that the upper part of the guide element (5) is pivotally connected with an adjustment column (10); the top surface of the guide groove (4021) is provided with an adjusting hole (4056) matched with the adjusting column (10); the adjusting hole (4056) is in threaded fit with the adjusting column (10); the upper end of the adjusting column (10) penetrates through an adjusting hole (4056); the lower part of the extrusion component (7) is provided with a limit hole (703) corresponding to the position of the adjusting column (10); the upper end of the adjusting column (10) is inserted into the adjusting column (10); the positioning column (7) is in clearance fit with the limiting hole (703).
9. Support foot for i-section steel column installation according to claim 8, characterized in that the guiding element (5) comprises a guiding plate (501); the guide plate (501) is slidably arranged in the guide groove (4021); an isosceles trapezoid block (502) corresponding to the locking column (6) is fixed on one surface of the guide plate (501) in parallel along the length direction; the inner ends of the locking columns (6) on the two sides of the isosceles trapezoid block (502) are respectively abutted against the two inclined surfaces of the isosceles trapezoid block (502).
10. The support base for i-steel column installation according to claim 9, wherein a ball (11) is embedded on the inner end surface of the locking column (6); the outer surface of the ball (11) is matched with the inclined surface of the isosceles trapezoid block (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166446.0A CN110847631A (en) | 2019-11-25 | 2019-11-25 | Supporting base for mounting I-shaped steel column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166446.0A CN110847631A (en) | 2019-11-25 | 2019-11-25 | Supporting base for mounting I-shaped steel column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110847631A true CN110847631A (en) | 2020-02-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911166446.0A Withdrawn CN110847631A (en) | 2019-11-25 | 2019-11-25 | Supporting base for mounting I-shaped steel column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847631A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392279A (en) * | 2020-11-22 | 2021-02-23 | 菏泽市定陶区祥明节能保温材料有限公司 | Stabilize effectual cast in situ concrete wall body strutting arrangement |
| CN112681773A (en) * | 2020-12-22 | 2021-04-20 | 魏如雪 | Supporting device for mounting building I-shaped steel column |
| CN112681774A (en) * | 2020-12-22 | 2021-04-20 | 魏如雪 | Positioning device for mounting building I-shaped steel column |
| CN114197693A (en) * | 2022-01-10 | 2022-03-18 | 张景军 | Transfer splicing and building mechanism applied to prefabricated building |
-
2019
- 2019-11-25 CN CN201911166446.0A patent/CN110847631A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392279A (en) * | 2020-11-22 | 2021-02-23 | 菏泽市定陶区祥明节能保温材料有限公司 | Stabilize effectual cast in situ concrete wall body strutting arrangement |
| CN112681773A (en) * | 2020-12-22 | 2021-04-20 | 魏如雪 | Supporting device for mounting building I-shaped steel column |
| CN112681774A (en) * | 2020-12-22 | 2021-04-20 | 魏如雪 | Positioning device for mounting building I-shaped steel column |
| CN114197693A (en) * | 2022-01-10 | 2022-03-18 | 张景军 | Transfer splicing and building mechanism applied to prefabricated building |
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Application publication date: 20200228 |