CN115977247B - Steel beam convenient to install for building steel structure - Google Patents
Steel beam convenient to install for building steel structure Download PDFInfo
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- CN115977247B CN115977247B CN202211640023.XA CN202211640023A CN115977247B CN 115977247 B CN115977247 B CN 115977247B CN 202211640023 A CN202211640023 A CN 202211640023A CN 115977247 B CN115977247 B CN 115977247B
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- supporting beam
- connecting plate
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- slots
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims description 26
- 230000000670 limiting effect Effects 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Load-Bearing And Curtain Walls (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a steel beam convenient to install for a building steel structure, which relates to the technical field of steel structure connection and comprises a first supporting beam, a second supporting beam is arranged right above the first supporting beam, a fixing mechanism is arranged between the first supporting beam and the second supporting beam, an auxiliary mechanism is arranged on the outer surface of the fixing mechanism, slots I are formed in the surfaces of the first supporting beam and the second supporting beam, two limit grooves are formed in the left and right ends of the bottom of the second supporting beam.
Description
Technical Field
The invention relates to the technical field of steel structure connection, in particular to a steel beam convenient to install for a building steel structure.
Background
The steel structure is a structure formed by steel materials, is one of main building structure types, mainly comprises steel beams, steel columns, steel trusses and other members made of steel sections, steel plates and the like, each member or each part is connected by welding seams, bolts or rivets, the steel beams are widely used in building engineering, and the steel beams mainly play a role in supporting the top of the whole steel structure.
The current chinese patent is (CN 107630524 a) a girder steel of building steel construction with being convenient for installation, including curb plate, fixed plate and inserted bar groove, the bilateral symmetry of curb plate is provided with the connecting plate, and is provided with the spliced pole hole on the connecting plate to the spliced pole interconnect that the connecting plate set up on passing through the spliced pole hole and the girder steel, be fixed with the spread groove on the girder steel, the fixed plate sets up one side at the girder steel.
Above-mentioned girder steel is installed only simply between the girder steel when the installation to can lead to the intensity of installation between the girder steel not high, lead to the emergence of potential safety hazard easily, so we propose a girder steel of building steel construction with the installation of being convenient for.
Disclosure of Invention
The invention aims to provide a steel beam which is convenient to install and is used for building steel structures, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the steel beam for the building steel structure is convenient to install and comprises a first supporting beam, a second supporting beam is arranged right above the first supporting beam, a fixing mechanism is arranged between the first supporting beam and the second supporting beam, and an auxiliary mechanism is arranged on the outer surface of the fixing mechanism;
the two limiting grooves are formed in the left end and the right end of the bottom of the supporting beam II.
According to the technical scheme, the fixing mechanism comprises a fixing block, the upper end and the lower end of the fixing block are respectively provided with a second slot, the outer surfaces of the two slots are respectively in contact with the surfaces of the first supporting beam and the second supporting beam, the front end and the back end of the fixing block are respectively provided with a first slot, and the left end and the right end of the fixing block are respectively provided with a third slot.
According to the technical scheme, four second slots are formed in the top of the fixed block, and the four second slots are respectively communicated with the two second slots.
According to the technical scheme, the first plugboards are arranged in the four second slotting grooves, the outer surfaces of the first plugboards are respectively contacted with the second slotting groove walls, and the first plugboards positioned in front and the second plugboards positioned at the back are respectively contacted with the first supporting beam and the second supporting beam.
According to the technical scheme, the auxiliary mechanism comprises two protection frames, the two protection frames respectively penetrate through the two grooves III, the two protection frames respectively contact with the groove walls of the two grooves III, and the upper end and the lower end of the two protection frames respectively contact with the surfaces of the first supporting beam and the second supporting beam.
According to the technical scheme, the positive and negative both ends of protection frame all are provided with picture peg two, two picture peg two respectively run through two slot one that two surfaces of supporting beam were seted up, and two picture peg two respectively with two protection frame surface fixed connection, two the equal fixedly connected with spring frame of one end that the protection frame is close to each other, and two spring frames respectively with a surface contact of four picture peg, two spring frame surfaces all are provided with two chimb.
According to the technical scheme, the auxiliary mechanism further comprises a first connecting plate, the first connecting plate is in contact with the top of the first supporting beam, the upper end of the first connecting plate is located inside the limiting groove, the upper end of the first connecting plate is in contact with the wall of the limiting groove, a second connecting plate is fixedly connected with the surface of the first connecting plate, the second connecting plate extends out of the first connecting plate and is in contact with the outer surface of the first supporting beam, a protection plate is fixedly connected with the surface of the second connecting plate, and the upper end of the protection plate is in contact with the inner wall of the second supporting beam.
According to the technical scheme, the auxiliary mechanism further comprises two clamping rings, the two clamping rings are respectively arranged on the inner walls of the two grooves, and two ends of the clamping rings are respectively fixedly connected with the surfaces of the two protection frames.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, after the fixed block is placed between the first supporting beam and the second supporting beam, the first supporting beam and the second supporting beam can be connected with the fixed block after penetrating through the second inserting slot formed in the upper end and the lower end of the fixed block, and then the second inserting plate is arranged in the second inserting slot through forming the second slot on the surface of the fixed block, so that the first supporting beam and the second supporting beam can be limited under the limitation of the fixed block, and the front-back deflection of the first supporting beam and the second supporting beam is avoided.
2. According to the invention, the groove III is formed at the left end and the right end of the fixed block, and after the protective frames are inserted into the groove III, the two protective frames are connected through the clamping ring arranged in the groove I, so that the protective frames limit the support beam I and the support beam II in the left-right direction under the limit of the clamping ring, and the connection and installation effects between the support beam I and the support beam II are better.
3. According to the invention, the first connecting plate is arranged at two ends of the protection frame, after the first connecting plate is connected with the top of the first supporting beam, the top of the first connecting plate is clamped into the limiting groove, the second connecting plate is arranged on the outer surface of the first connecting plate, so that the second connecting plate is clamped on the surface of the first supporting beam, and then the protection plate connected with the inner part of the second connecting plate is clamped on the inner wall of the second supporting beam, so that the first connecting plate can be limited under the cooperation of the second connecting plate and the protection plate, and the condition that the first connecting plate is separated from the limiting groove is avoided.
4. According to the invention, the second plugboard is arranged at the two ends of the protection frame, the second plugboard penetrates through the first slot, the two protection frames are connected through the second plugboard, the protection frame can be prevented from being separated from the third slot, and the elastic frame is arranged on the surface of the second plugboard, so that the elastic frame can extrude the first plugboard to be tightly attached to the surface of the second supporting beam, and the limiting effect between the first plugboard and the second supporting beam can be ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the overall principle of the present invention;
FIG. 2 is a perspective view of a first support beam and a second support beam of the present invention;
FIG. 3 is a perspective view of the securing mechanism and auxiliary mechanism of the present invention;
FIG. 4 is a schematic view of the structure of the fixing mechanism of the present invention;
FIG. 5 is a cross-sectional view of a mounting block of the present invention;
FIG. 6 is a schematic view of the auxiliary mechanism of the present invention;
fig. 7 is a perspective view of the second insert plate and the spring frame of the present invention.
In the figure: the support beam I1, the support beam II 2, the fixed mechanism 3, the fixed block 31, the first slot 32, the second slot 33, the second slot 34, the first plugboard 35, the third slot 36, the auxiliary mechanism 4, the protective frame 41, the second plugboard 42, the elastic frame 43, the convex edge 44, the first connecting plate 45, the second connecting plate 46, the protective plate 47, the snap ring 48, the first slot 5 and the limit slot 6.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides the following technical solutions: the steel beam for the building steel structure is convenient to install and comprises a first supporting beam 1, a second supporting beam 2 is arranged right above the first supporting beam 1, a fixing mechanism 3 is arranged between the first supporting beam 1 and the second supporting beam 2, and an auxiliary mechanism 4 is arranged on the outer surface of the fixing mechanism 3; the surfaces of the first supporting beam 1 and the second supporting beam 2 are respectively provided with a first slot 5, and the left end and the right end of the bottom of the second supporting beam 2 are respectively provided with two limiting slots 6.
The fixing mechanism 3 comprises a fixing block 31, slots two 33 are respectively arranged at the upper end and the lower end of the fixing block 31, the outer surfaces of the two slots two 33 are respectively contacted with the surfaces of a first supporting beam 1 and a second supporting beam 2, grooves one 32 are respectively arranged at the front end and the back end of the fixing block 31, after the fixing block 31 is placed between the first supporting beam 1 and the second supporting beam 2, the first supporting beam 1 and the second supporting beam 2 penetrate through the slots two 33 and are connected with the fixing block 31 through the slots two 33, grooves two 34 are respectively arranged on the surface of the fixing block 31, a plugboard one 35 is arranged inside the grooves two 34, the first supporting beam 1 and the second supporting beam 2 can be limited under the limitation of the fixing block 31, the front and back deflection of the first supporting beam 1 and the second supporting beam 2 is avoided, grooves three 36 are respectively arranged at the left end and the right end of the fixing block 31, four slots II 34 are formed in the top of the fixed block 31, the four slots II 34 are respectively communicated with the two slots II 33, inserting plates I35 are respectively arranged in the four slots II 34, the outer surfaces of the four inserting plates I35 are respectively in contact with the walls of the four slots II 34, the two inserting plates I35 positioned in front and the two inserting plates I35 positioned at the back are respectively in surface contact with the supporting beam I1 and the supporting beam II 2, the slots III 36 are formed at the left end and the right end of the fixed block 31, after the protecting frames 41 are inserted into the slots III 36, the two protecting frames 41 are connected through the clamping rings 48 placed in the slots I32, the protecting frames 41 restrict the supporting beam I1 and the supporting beam II 2 in the left-right direction under the restriction of the clamping rings 48, and the connecting and mounting effect between the supporting beam I1 and the supporting beam II 2 is guaranteed to be better.
The auxiliary mechanism 4 comprises two protective frames 41, the two protective frames 41 respectively penetrate through the three slots 36, the two protective frames 41 respectively contact with the walls of the three slots 36, the upper end and the lower end of the two protective frames 41 respectively contact with the surfaces of the first support beam 1 and the second support beam 2, the front end and the back end of each protective frame 41 are respectively provided with a second plugboard 42, the two plugboards 42 respectively penetrate through two slots 5 formed in the surface of the second support beam 2, the two plugboards 42 are respectively fixedly connected with the surfaces of the two protective frames 41, the two protective frames 41 are connected through the plugboards 42 after the plugboards 42 penetrate through the slots 5, the protective frames 41 are prevented from being separated from the three slots 36, the elastic frames 43 are arranged on the surfaces of the plugboards 42 to enable the elastic frames 43 to squeeze the plugboards 35 to be tightly adhered to the surfaces of the second support beam 2, thereby ensuring the limiting effect of the first flashboard 35 on the first supporting beam 1 and the second supporting beam 2, the elastic frames 43 are fixedly connected to the ends of the two protective frames 41, which are close to each other, the two elastic frames 43 are respectively contacted with the surfaces of the four first flashboard 35, the surfaces of the two elastic frames 43 are provided with two convex edges 44, the auxiliary mechanism 4 also comprises a first connecting plate 45, the first connecting plate 45 is contacted with the top of the first supporting beam 1, the upper end of the first connecting plate 45 is positioned in the limiting groove 6, the upper end of the first connecting plate 45 is contacted with the groove wall of the limiting groove 6, the surface of the first connecting plate 45 is fixedly connected with a second connecting plate 46, the second connecting plate 46 extends out of the first connecting plate 45 and is contacted with the outer surface of the first supporting beam 1, the surface of the second connecting plate 46 is fixedly connected with a protective plate 47, the upper end of the protective plate 47 is contacted with the inner wall of the second supporting beam 2, the auxiliary mechanism 4 also comprises two clamping rings 48, two snap rings 48 are respectively arranged on the inner walls of two grooves one 32, two ends of each snap ring 48 are respectively fixedly connected with the surfaces of two protective frames 41, a first connecting plate 45 is arranged at two ends of each protective frame 41, after the first connecting plate 45 is connected with the top of a first supporting beam 1, the top of the first connecting plate 45 is clamped into the limiting groove 6, a second connecting plate 46 is arranged on the outer surface of the first connecting plate 45, the second connecting plate 46 is clamped on the surface of the first supporting beam 1, and a protective plate 47 internally connected with the second connecting plate 46 is clamped on the inner wall of the second supporting beam 2, so that the first connecting plate 46 and the protective plate 47 can be matched to limit the first connecting plate 45, the condition that the first connecting plate 45 is separated from the limiting groove 6 is avoided, and the first supporting beam 1 and the second supporting beam 2 are prevented from being deflected by the first connecting plate 45 and the first inserting plate 35.
When the support beam is used, after the fixed block 31 is placed between the support beam I1 and the support beam II 2, the support beam I1 and the support beam II 2 can be connected with the fixed block 31 after penetrating through the slot II 33 through the slots II 33 formed in the upper end and the lower end of the fixed block 31, and then the slot II 34 is formed in the surface of the fixed block 31, and the plugboard I35 is arranged in the slot II 34, so that the support beam I1 and the support beam II 2 can be limited under the limitation of the fixed block 31, and the front-back deflection of the support beam I1 and the support beam II 2 is avoided;
the third slot 36 is formed at the left end and the right end of the fixed block 31, after the protective frame 41 is inserted into the third slot 36, the two protective frames 41 are connected through the clamping ring 48 arranged in the first slot 32, so that the protective frame 41 restricts the first support beam 1 and the second support beam 2 in the left-right direction under the restriction of the clamping ring 48, and the connection and installation effects between the first support beam 1 and the second support beam 2 are better;
the first connecting plate 45 is arranged at two ends of the protection frame 41, after the first connecting plate 45 is connected with the top of the first supporting beam 1, the top of the first connecting plate 45 is clamped into the limiting groove 6, the second connecting plate 46 is clamped on the surface of the first supporting beam 1 by installing the second connecting plate 46 on the outer surface of the first connecting plate 45, and then the protection plate 47 connected with the inner part of the second connecting plate 46 is clamped on the inner wall of the second supporting beam 2, so that the first connecting plate 45 can be limited under the cooperation of the second connecting plate 46 and the protection plate 47, the condition that the first connecting plate 45 is separated from the limiting groove 6 is avoided, and the deflection limiting effect between the first supporting beam 1 and the second supporting beam 2 is better under the cooperation of the first connecting plate 45 and the first inserting plate 35;
through installing picture peg two 42 at the both ends of protection frame 41, after picture peg two 42 runs through slot one 5, connect two protection frames 41 through picture peg two 42, can avoid protection frame 41 to break away from the condition emergence of fluting three 36, the rethread sets up elastic support 43 at picture peg two 42 surfaces, makes elastic support 43 can extrude picture peg one 35 and make its and support beam two 2's surface paste tightly to can guarantee the restriction effect between picture peg one 35 pair support beam one 1 and the support beam two 2.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a girder steel of building steel construction with being convenient for installation, includes a supporting beam (1), its characterized in that: a support beam II (2) is arranged right above the support beam I (1), a fixing mechanism (3) is arranged between the support beam I (1) and the support beam II (2), and an auxiliary mechanism (4) is arranged on the outer surface of the fixing mechanism (3);
the surfaces of the first supporting beam (1) and the second supporting beam (2) are provided with a first slot (5), and the left end and the right end of the bottom of the second supporting beam (2) are provided with two limit slots (6);
the fixing mechanism (3) comprises a fixing block (31), slots II (33) are formed in the upper end and the lower end of the fixing block (31), the outer surfaces of the slots II (33) are respectively in contact with the surfaces of the support beam I (1) and the support beam II (2), grooves I (32) are formed in the front end and the back end of the fixing block (31), and grooves III (36) are formed in the left end and the right end of the fixing block (31);
four slotting second (34) are formed in the top of the fixed block (31), and the four slotting second (34) are respectively communicated with the two slots second (33);
the four slotting II (34) are internally provided with plugboards I (35), the outer surfaces of the four plugboards I (35) are respectively contacted with the slot walls of the four slotting II (34), and the two plugboards I (35) positioned in front and the two plugboards I (35) positioned at back are respectively contacted with the surfaces of the supporting beam I (1) and the supporting beam II (2);
the auxiliary mechanism (4) comprises two protection frames (41), the two protection frames (41) respectively penetrate through the two slotting III (36), the two protection frames (41) respectively contact with the walls of the two slotting III (36), and the upper end and the lower end of the two protection frames (41) respectively contact with the surfaces of the first supporting beam (1) and the second supporting beam (2);
two inserting plates II (42) are respectively arranged at the front end and the back end of the protective frame (41), two inserting grooves I (5) formed in the surfaces of the two inserting plates II (42) penetrate through the supporting beam II (2) respectively, the two inserting plates II (42) are fixedly connected with the surfaces of the two protective frames (41) respectively, elastic frames (43) are fixedly connected to the ends, close to each other, of the two protective frames (41), the two elastic frames (43) are in contact with the surfaces of the four inserting plates I (35) respectively, and two convex edges (44) are formed on the surfaces of the two elastic frames (43);
the auxiliary mechanism (4) further comprises a first connecting plate (45), the first connecting plate (45) is in contact with the top of the first supporting beam (1), the upper end of the first connecting plate (45) is positioned in the limiting groove (6), the upper end of the first connecting plate (45) is in contact with the groove wall of the limiting groove (6), a second connecting plate (46) is fixedly connected to the surface of the first connecting plate (45), the second connecting plate (46) extends out of the first connecting plate (45) and is in contact with the outer surface of the first supporting beam (1), a protection plate (47) is fixedly connected to the surface of the second connecting plate (46), and the upper end of the protection plate (47) is in contact with the inner wall of the second supporting beam (2);
the auxiliary mechanism (4) further comprises two clamping rings (48), the two clamping rings (48) are respectively arranged on the inner walls of the two grooves (32), and the two ends of the two clamping rings (48) are respectively fixedly connected with the surfaces of the two protection frames (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211640023.XA CN115977247B (en) | 2022-12-20 | 2022-12-20 | Steel beam convenient to install for building steel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211640023.XA CN115977247B (en) | 2022-12-20 | 2022-12-20 | Steel beam convenient to install for building steel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115977247A CN115977247A (en) | 2023-04-18 |
| CN115977247B true CN115977247B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211640023.XA Active CN115977247B (en) | 2022-12-20 | 2022-12-20 | Steel beam convenient to install for building steel structure |
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| Country | Link |
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| CN (1) | CN115977247B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750708A1 (en) * | 1994-01-25 | 1997-01-02 | Valmet Automotive Oy | Body structure |
| KR100501482B1 (en) * | 2005-03-09 | 2005-07-18 | (주)세화엔지니어링건축사사무소 | Auxiliary connecting device of beams for constructing building |
| KR101509100B1 (en) * | 2014-10-17 | 2015-04-08 | 윤이중 | Excellent workability H-beam adapter |
| CN107630524A (en) * | 2017-09-28 | 2018-01-26 | 南通硕伦实业有限公司 | A kind of construction steel structure girder steel being easily installed |
| CN110847359A (en) * | 2019-11-26 | 2020-02-28 | 上海绿地建设(集团)有限公司 | Installation butt joint structure between roof beam and post of building in assembled |
| CN212358578U (en) * | 2020-05-05 | 2021-01-15 | 深圳市零五建筑工程有限公司 | Solderless assembled steel structure building |
| CN216865498U (en) * | 2021-12-31 | 2022-07-01 | 韩斌 | Steel structure connecting piece |
-
2022
- 2022-12-20 CN CN202211640023.XA patent/CN115977247B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0750708A1 (en) * | 1994-01-25 | 1997-01-02 | Valmet Automotive Oy | Body structure |
| KR100501482B1 (en) * | 2005-03-09 | 2005-07-18 | (주)세화엔지니어링건축사사무소 | Auxiliary connecting device of beams for constructing building |
| KR101509100B1 (en) * | 2014-10-17 | 2015-04-08 | 윤이중 | Excellent workability H-beam adapter |
| CN107630524A (en) * | 2017-09-28 | 2018-01-26 | 南通硕伦实业有限公司 | A kind of construction steel structure girder steel being easily installed |
| CN110847359A (en) * | 2019-11-26 | 2020-02-28 | 上海绿地建设(集团)有限公司 | Installation butt joint structure between roof beam and post of building in assembled |
| CN212358578U (en) * | 2020-05-05 | 2021-01-15 | 深圳市零五建筑工程有限公司 | Solderless assembled steel structure building |
| CN216865498U (en) * | 2021-12-31 | 2022-07-01 | 韩斌 | Steel structure connecting piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115977247A (en) | 2023-04-18 |
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