CN111945884B - Steel structure upright post assembly capable of improving connection strength - Google Patents
Steel structure upright post assembly capable of improving connection strength Download PDFInfo
- Publication number
- CN111945884B CN111945884B CN202010887256.4A CN202010887256A CN111945884B CN 111945884 B CN111945884 B CN 111945884B CN 202010887256 A CN202010887256 A CN 202010887256A CN 111945884 B CN111945884 B CN 111945884B
- Authority
- CN
- China
- Prior art keywords
- plate
- straight
- threaded
- steel structure
- bottom plate
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2463—Connections to foundations
Abstract
The invention relates to a steel structure upright post assembly for improving connection strength in the field of steel structures, which comprises a concrete table and a steel structure, wherein the concrete table is provided with a threaded column, the concrete table is provided with a straight groove, the straight groove is provided with a bottom plate, the threaded column is provided with a third bolt, the bottom plate is provided with a fixing structure, the bottom plate is provided with a base plate, the base plate is provided with a first bolt, the first bolt is connected with the bottom plate, the base plate is provided with a sleeve, the steel structure is arranged in the sleeve, the steel structure and the sleeve are provided with a second bolt, the steel structure is provided with an L-shaped plate, the straight groove is provided with a top plate, the top plate is connected with the threaded column, the threaded column is provided with a first nut, the top plate is provided with a slot, and the slot is spliced with the L-shaped plate.
Description
Technical Field
The invention relates to the field of steel structures, in particular to a steel structure stand column assembly capable of improving connection strength.
Background
Steel structures are structures composed of steel materials and are one of the main building structure types. The structure mainly comprises beam steel, steel columns, steel trusses and other members made of section steel, steel plates and the like, and rust removing and preventing processes such as silanization, pure manganese phosphating, washing drying, galvanization and the like are adopted. The components or parts are typically joined by welds, bolts or rivets. Because of its light dead weight, and construction is simple and convenient, widely apply to fields such as large-scale factory building, venue, superelevation layer. The steel structure is easy to rust, and generally the steel structure needs to be derusted, galvanized or painted, and needs to be maintained regularly.
In the process of steel structure combination connection, the supporting upright posts need to be fixed, and generally, the supporting upright posts are installed and positioned through foundation bolts inlaid in concrete.
But current fixed knot constructs and directly installs on the concrete surface mostly, can't support spacing from the opposite post bottom plate like this, and connection stability is relatively poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a steel structure upright post assembly for improving the connection strength, which can effectively overcome the problems that most of the existing fixing structures in the prior art are directly installed on the surface of concrete, so that the upright post bottom plate cannot be supported and limited from the side surface, and the connection stability is poor.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a steel structure upright post assembly for improving connection strength comprises a concrete platform and a steel structure, wherein threaded columns are symmetrically and uniformly and fixedly connected in the concrete platform through reinforcing steel bars, a first straight groove is formed in the concrete platform, a base plate is attached and inserted in the first straight groove, the threaded columns are in threaded connection with third nuts 24 for fixing the base plate at the top of the base plate, the base plate is symmetrically connected with a fixing structure for auxiliary fixing of the base plate, a base plate is connected with the top of the base plate, first bolts are symmetrically and threadedly connected with the top of the base plate, the bottom of the first bolts is in threaded connection with the base plate, sleeves matched with the steel structure are connected with the top of the base plate, the steel structure is inserted in the sleeves, second bolts are respectively in threaded connection with the steel structure and the sleeves through threaded holes, and L-shaped plates are uniformly and fixedly connected around the steel structure, the top of the first straight groove is spliced with a top plate, the top plate is connected with a threaded column in a sliding mode through a straight hole, the threaded column is connected with a first nut used for fixing the top plate in a threaded mode at the top of the top plate, the top plate is provided with a jack, and the jack is spliced with the upright position of the L-shaped plate in a laminating mode.
Further, fixed knot constructs including L shape backup pad, threaded rod, straight trapezoidal piece, horizontal triangular groove, horizontal trapezoidal piece, straight triangular groove, horizontal groove and spring, symmetry fixedly connected with L shape backup pad on the bottom plate, the horizontal position department of L shape backup pad has the threaded rod through screw hole threaded connection, the bottom of threaded rod rotates through fixed connection's bearing and is connected with straight trapezoidal piece, the inner end fixedly connected with spring of horizontal groove, the horizontal trapezoidal piece of outer end fixedly connected with of spring, the straight triangular groove that uses with the cooperation of straight trapezoidal piece is seted up to the top inner end department of horizontal trapezoidal piece, the inner wall of first straight flute is seted up and is used horizontal triangular groove with the cooperation of horizontal trapezoidal piece.
Furthermore, the bottom plate is symmetrically provided with a first straight groove, and the straight trapezoidal block is attached to the straight groove in a sliding connection mode.
Furthermore, a second nut for driving the threaded rod is fixedly connected to the top of the threaded rod.
Further, the inclined edge of the horizontal trapezoidal block is arranged outwards and downwards.
Furthermore, the top plate is in fit sliding connection with the steel structure through the sliding hole.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. according to the invention, the bottom plate is conveniently fixed in the first straight groove through the connection of the third nut and the threaded column, then the backing plate is fixed on the bottom plate through the first bolt, the steel structure is arranged in the sleeve through the second bolt, the bottom of the steel structure is conveniently limited and fixed, the first nut is connected with the threaded column, the top plate is conveniently fixed on the concrete table, the concrete table is used for righting the steel structure, the steel structure is prevented from shaking, finally, the L-shaped plate is matched with the jack, the top plate is convenient for fixing and positioning the L-shaped plate, the steel structure can be further fixed, the steel structure can be conveniently fixed and limited through the combination of multiple modes, and the connection strength of the steel structure is effectively improved.
2. According to the invention, the threaded rod of the fixing structure is driven to rotate by the second nut, the threaded rod drives the straight trapezoidal block to move downwards, the threaded rod pushes the horizontal trapezoidal block to move upwards under the action of the straight triangular groove, the horizontal trapezoidal block moves into the horizontal triangular groove, and the horizontal triangular groove limits the horizontal trapezoidal block, so that the bottom plate is fixed and limited, the bottom plate is fixed, the stability of the bottom plate is ensured, and the bottom stability of a steel structure is ensured.
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. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a cross-sectional view of a mid-structure of the present invention;
FIG. 3 is a structural cross-sectional view of the present invention;
the reference numerals in the drawings denote: 1. the concrete platform comprises a concrete platform 2, a first straight groove 3, a threaded column 4, a top plate 5, a steel structure 6, a first nut 7, a bottom plate 8, a backing plate 9, a second bolt 10, a first bolt 11, an L-shaped plate 12, an insertion hole 13, a second nut 14, an L-shaped support plate 15, a threaded rod 16, a straight trapezoidal block 17, a horizontal triangular groove 18, a horizontal trapezoidal block 19, a straight triangular groove 20, a horizontal groove 21, a spring 22, a straight groove 23, a sleeve 24 and a third nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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.
The present invention will be further described with reference to the following examples.
Examples
The steel structure upright post component for improving the connection strength comprises a concrete platform 1 and a steel structure 5, wherein a threaded post 3 is symmetrically and fixedly connected in the concrete platform 1 through a steel bar, a first straight groove 2 is formed in the concrete platform 1, a bottom plate 7 is spliced in the first straight groove 2 in a fitting manner, a third nut 24 for fixing the bottom plate 7 is in threaded connection with the threaded post 3 at the top of the bottom plate 7, the bottom plate 7 is symmetrically connected with a fixing structure for assisting in fixing the bottom plate 7, the fixing structure comprises an L-shaped supporting plate 14, a threaded rod 15, a straight trapezoidal block 16, a horizontal triangular groove 17, a horizontal trapezoidal block 18, a straight triangular groove 19, a horizontal groove 20 and a spring 21, the L-shaped supporting plate 14 is symmetrically and fixedly connected on the bottom plate 7, the threaded rod 15 is in threaded connection with the horizontal position of the L-shaped supporting plate 14 through a threaded hole, the bottom of the threaded rod 15 is rotatably connected with the straight trapezoidal block 16 through a fixedly connected bearing, the inner end of the transverse groove 20 is fixedly connected with a spring 21, the outer end of the spring 21 is fixedly connected with a transverse trapezoidal block 18, the inner end of the top of the transverse trapezoidal block 18 is provided with a straight triangular groove 19 matched with the straight trapezoidal block 16 for use, the inner wall of the first straight groove 2 is provided with a transverse triangular groove 17 matched with the transverse trapezoidal block 18 for use, the bottom plate 7 is symmetrically provided with a straight groove 22, the straight trapezoidal block 16 is jointed with the straight groove 22 in a sliding manner, the top of the threaded rod 15 is fixedly connected with a second nut 13 used for driving the threaded rod 15, the bevel edge of the transverse trapezoidal block 18 is outwards arranged and downwards arranged, the threaded rod 15 of the fixed structure is driven by the second nut 13 to rotate, the threaded rod 15 drives the straight trapezoidal block 16 to downwards move, the threaded rod 15 pushes the transverse trapezoidal block 18 to upwards move through the action of the straight triangular groove 19, the transverse trapezoidal block 18 moves into the transverse triangular groove 17, the transverse triangular groove 17 limits the transverse trapezoidal block 18, the bottom plate 7 is fixed and limited, the bottom plate 7 is fixed, the stability of the bottom plate 7 is ensured, and the stability of the bottom of the steel structure 5 is ensured;
the top of the bottom plate 7 is connected with a backing plate 8, the top of the backing plate 8 is symmetrically in threaded connection with a first bolt 10, the bottom of the first bolt 10 is in threaded connection with the bottom plate 7, the top of the backing plate 8 is connected with a sleeve 23 matched with the steel structure 5 for use, the steel structure 5 is inserted in the sleeve 23, the steel structure 5 and the sleeve 23 are both in threaded connection with a second bolt 9 through a threaded hole, the periphery of the steel structure 5 is uniformly and fixedly connected with an L-shaped plate 11, the top of the first straight groove 2 is inserted with a top plate 4, the top plate 4 is in fit sliding connection with the steel structure 5 through a sliding hole, the top plate 4 is in sliding connection with a threaded column 3 through a straight hole, the threaded column 3 is in threaded connection with a first nut 6 for fixing the top plate 4 at the top of the top plate 4, the top plate 4 is provided with a jack 12, the jack 12 is in fit insertion connection with the upright position of the L-shaped plate 11, and is connected with the threaded column 3 through a third nut 24, so that the bottom plate 7 is conveniently fixed in the first straight groove 2, then first bolt 10 fixes backing plate 8 on bottom plate 7, second bolt 9 is with steel construction 5 in sleeve 23, the convenience is carried out spacing fixed to steel construction 5's bottom, first nut 6 is connected with screw thread post 3, conveniently fix roof 4 on concrete platform 1, concrete platform 1 is right the processing to steel construction 5, avoid steel construction 5 to take place to rock, finally, L shaped plate 11 and jack 12 cooperation, roof 4 conveniently carries out fixed position to L shaped plate 11, can carry out one step and fix steel construction 5, multiple mode combines the convenience to fix steel construction 5 spacingly, improve steel construction 5's joint strength effectively.
When in use, as shown in fig. 1-3, the bottom plate 7 is inserted on the threaded column 3, the third nut 24 is rotated, the third nut 24 is connected with the threaded column 3, the bottom plate 7 is conveniently fixed in the first straight groove 2, the second nut 13 is rotated, the second nut 13 drives the threaded rod 15 of the fixed structure to rotate, the threaded rod 15 drives the straight trapezoidal block 16 to move downwards, the threaded rod 15 pushes the horizontal trapezoidal block 18 to move upwards through the action of the straight triangular groove 19, the horizontal trapezoidal block 18 moves into the horizontal triangular groove 17, the horizontal triangular groove 17 limits the horizontal trapezoidal block 18, the bottom plate 7 is fixed, the stability of the bottom plate 7 is ensured, the stability of the bottom plate 5 is ensured, the backing plate 8 is fixed on the bottom plate 7 by the first bolt 10, the steel structure 5 is inserted in the sleeve 23, the steel structure 5 is arranged in the sleeve 23 by the second bolt 9, the bottom of the steel structure 5 is conveniently limited and fixed, first nut 6 is connected with threaded column 3, conveniently fixes roof 4 on concrete platform 1, and concrete platform 1 is right the processing to steel construction 5, avoids steel construction 5 to take place to rock, and finally, L shaped plate 11 and jack 12 cooperation, roof 4 conveniently carry out fixed position to L shaped plate 11, can carry out one step and fix steel construction 5, and multiple mode combines the convenience to fix steel construction 5 spacing, improves steel construction 5's joint strength effectively.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (5)
1. The utility model provides an improve joint strength's steel construction stand subassembly, includes concrete platform (1) and steel construction (5), its characterized in that: the concrete platform is characterized in that threaded columns (3) are symmetrically and fixedly connected in the concrete platform (1) through steel bars, a first straight groove (2) is formed in the concrete platform (1), a bottom plate (7) is spliced in the first straight groove (2), the threaded columns (3) are in threaded connection with third nuts (24) used for fixing the bottom plate (7) at the top of the bottom plate (7), the bottom plate (7) is symmetrically connected with a fixing structure used for auxiliary fixing of the bottom plate (7), the top of the bottom plate (7) is connected with a backing plate (8), the top of the backing plate (8) is symmetrically in threaded connection with first bolts (10), the bottom of each first bolt (10) is in threaded connection with the bottom plate (7), the top of the backing plate (8) is connected with a sleeve (23) matched with a steel structure (5) for use, and the steel structure (5) is spliced in the sleeve (23), the steel structure (5) and the sleeve (23) are both connected with a second bolt (9) through a threaded hole in a threaded manner, the periphery of the steel structure (5) is uniformly and fixedly connected with an L-shaped plate (11), the top of the first straight groove (2) is spliced with a top plate (4), the top plate (4) is in sliding connection with the threaded column (3) through a straight hole, the top of the threaded column (3) at the top of the top plate (4) is in threaded connection with a first nut (6) for fixing the top plate (4), the top plate (4) is provided with an insertion hole (12), and the insertion hole (12) is attached to and spliced with the upright part of the L-shaped plate (11); the fixing structure comprises an L-shaped supporting plate (14), a threaded rod (15), a straight trapezoidal block (16), a transverse triangular groove (17), a transverse trapezoidal block (18), a straight triangular groove (19), a transverse groove (20) and a spring (21), l-shaped supporting plates (14) are symmetrically and fixedly connected to the bottom plate (7), threaded rods (15) are connected to the transverse parts of the L-shaped supporting plates (14) through threaded holes in a threaded manner, the bottom of the threaded rod (15) is rotationally connected with a straight trapezoidal block (16) through a bearing which is fixedly connected, the inner end of the transverse groove (20) is fixedly connected with a spring (21), the outer end of the spring (21) is fixedly connected with a transverse trapezoidal block (18), a straight triangular groove (19) matched with the straight trapezoidal block (16) is arranged at the inner end of the top of the horizontal trapezoidal block (18), the inner wall of the first straight groove (2) is provided with a transverse triangular groove (17) matched with the transverse trapezoidal block (18) for use.
2. The steel structure upright post assembly with the improved connection strength as claimed in claim 1, wherein the bottom plate (7) is symmetrically provided with straight grooves (22), and the straight trapezoidal blocks (16) are in fit sliding connection with the straight grooves (22).
3. The steel structure column component for improving the connection strength is characterized in that a second nut (13) for driving the threaded rod (15) is fixedly connected to the top of the threaded rod (15).
4. The steel structure column assembly for improving the connection strength according to claim 3, wherein the inclined edge of the horizontal trapezoid block (18) is arranged outwards and downwards.
5. The steel structure upright post assembly with the improved connection strength as claimed in claim 1, wherein the top plate (4) is in fit sliding connection with the steel structure (5) through a sliding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887256.4A CN111945884B (en) | 2020-08-28 | 2020-08-28 | Steel structure upright post assembly capable of improving connection strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887256.4A CN111945884B (en) | 2020-08-28 | 2020-08-28 | Steel structure upright post assembly capable of improving connection strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111945884A CN111945884A (en) | 2020-11-17 |
| CN111945884B true CN111945884B (en) | 2021-11-02 |
Family
ID=73367838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010887256.4A Active CN111945884B (en) | 2020-08-28 | 2020-08-28 | Steel structure upright post assembly capable of improving connection strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111945884B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250802A (en) * | 2021-12-30 | 2022-03-29 | 广州电力设计院有限公司 | Fabricated concrete foundation and construction method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH420577A (en) * | 1963-03-18 | 1966-09-15 | Durisol Ag | Building made from prefabricated elements |
| JP3678695B2 (en) * | 2001-11-16 | 2005-08-03 | 株式会社三喜工務店 | Fixing method of column to concrete foundation |
| JP2004316278A (en) * | 2003-04-17 | 2004-11-11 | Maeda Corp | Structure of steel pipe plinth part |
| FR2933997A1 (en) * | 2008-07-18 | 2010-01-22 | Hau Loic Guist | Lightweight structure i.e. lightweight modular protecting structure, constructing method for e.g. office, involves assembling panels on columns/elements by existing fixation or gripping on connection pieces, to form wall/separator |
| CN107254884A (en) * | 2017-07-28 | 2017-10-17 | 湖南大学 | A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node |
-
2020
- 2020-08-28 CN CN202010887256.4A patent/CN111945884B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111945884A (en) | 2020-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212534174U (en) | Raft foundation steel bar supporting tool | |
| CN113585479B (en) | Beam column structure for super-large span steel structure building and construction method thereof | |
| CN111945884B (en) | Steel structure upright post assembly capable of improving connection strength | |
| CN107762161B (en) | A kind of energy-saving assembled system of steel residential structure and installation method | |
| CN111173249B (en) | Overhanging support system attached to rectangular beam and column | |
| CN205637135U (en) | Steel construction pipe truss beam column conversion node | |
| CN216340126U (en) | Supporting connection node structure for steel structure building | |
| CN213710503U (en) | Steel structure bearing frame for building engineering | |
| CN112081245B (en) | Disc type building steel beam mounting structure and construction method thereof | |
| CN219886552U (en) | Upright post structure of steel bridge | |
| CN111042311A (en) | Steel construction factory building | |
| CN213709862U (en) | Support base for erecting steel structure | |
| CN217353692U (en) | Reinforced steel structure of steel structure joint based on stadium space pipe truss | |
| CN211097269U (en) | Outdoor trampoline that can fast assembly and prevent collapsing | |
| CN213174898U (en) | Support arrangement for steel house building | |
| CN212453069U (en) | Steel construction pipe truss connection structure | |
| CN211201306U (en) | Steel construction that transformer substation used | |
| CN216807810U (en) | Assembled can have enough to meet need many sizes composite beam support steel corbel | |
| CN218082303U (en) | Clamp for machining steel structure beam | |
| CN215671428U (en) | Concatenation formula steel construction | |
| CN218060737U (en) | Prefabricated light steel construction house | |
| CN218541644U (en) | Reinforced concrete reinforced structure | |
| CN214784653U (en) | Building steel structure supporting seat | |
| CN218091279U (en) | Steel structure support structure | |
| CN220395298U (en) | Steel construction eyelidretractor convenient to dismantle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211019 Address after: 273199 East head of Yuanwu Road, West District, Qufu Economic Development Zone, Jining City, Shandong Province Applicant after: Qufu Yuanheng building materials Co.,Ltd. Address before: 431899 180 households, 53 Jingyuan Avenue, Xinshi Town, Jingshan County, Jingmen City, Hubei Province Applicant before: Li Sanhong |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Steel Structure Column Component for Improving Connection Strength Effective date of registration: 20230803 Granted publication date: 20211102 Pledgee: Qufu sub branch of Postal Savings Bank of China Ltd. Pledgor: Qufu Yuanheng building materials Co.,Ltd. Registration number: Y2023980050861 |