CN109138459B - Section steel post welding butt joint straightness controller that hangs down - Google Patents
Section steel post welding butt joint straightness controller that hangs down Download PDFInfo
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- CN109138459B CN109138459B CN201811091688.3A CN201811091688A CN109138459B CN 109138459 B CN109138459 B CN 109138459B CN 201811091688 A CN201811091688 A CN 201811091688A CN 109138459 B CN109138459 B CN 109138459B
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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Abstract
The invention discloses a section steel column welding butt joint verticality controller which comprises an upper column horizontal fixing frame, a lower column horizontal fixing frame and a vertical adjusting rod, wherein the upper column horizontal fixing frame is formed by connecting two upper column horizontal fixing rods into a whole by inserting two horizontal connecting rods; the lower column horizontal fixing frame is formed by connecting two lower column horizontal fixing rods into a whole through two horizontal connecting rods; the special tool for controlling the welding butt joint verticality of the section steel column is simple to manufacture and convenient to operate, and is a special tool with feasibility for controlling the welding butt joint verticality of the section steel column.
Description
Technical Field
The invention relates to the technical field of verticality control construction in a section steel concrete composite structure, in particular to a section steel column welding butt joint verticality controller.
Background
In the construction of a steel reinforced concrete composite structure in the building field, reinforced concrete is wrapped outside a section steel column, the control of the welding, butt joint and installation verticality of each floor section steel column is crucial, if the verticality control is not accurate when each floor section steel column is welded, butt joint and installation, the verticality deviation accumulation of the upper floor section steel column is too large, the steel column deviates to the outside of a column reinforced concrete interface and cannot be constructed, and the service performance and safety of engineering are affected.
In the process of welding, butting and installing the section steel columns in the prior similar engineering, wind rope tie-down chain is arranged at the top of the upper section steel column to be matched with a theodolite to adjust the verticality of the upper section steel column, and welding is carried out immediately after the verticality adjustment meets the requirement.
Disclosure of Invention
The invention aims to provide a section steel column welding butt joint verticality controller which is simple to manufacture, convenient to operate and feasible, and can ensure that the section steel column welding butt joint verticality is accurately controlled so as to solve the problem of low verticality control accuracy of the existing section steel column welding butt joint verticality.
In order to achieve the purpose, the invention provides the following technical scheme:
a section steel column welding butt joint verticality controller comprises an upper column horizontal fixing frame, a lower column horizontal fixing frame and a vertical adjusting rod; the upper column horizontal fixing frame is formed by connecting two upper column horizontal fixing rods into a whole by inserting two horizontal connecting rods; the lower column horizontal fixing frame is formed by connecting two lower column horizontal fixing rods into a whole through two horizontal connecting rods; the upper column horizontal fixing frame and the lower column horizontal fixing frame are connected into a whole by four vertical adjusting rods;
the upper column horizontal fixing rod consists of a long rectangular solid iron mold A and four iron hollow cylindrical buckles A, the iron mold A is clamped with four key slots A, screw rods A at one end parts of the four hollow cylindrical buckles A are embedded in the key slots A of the iron mold A and can move in parallel, the interiors of the four hollow cylindrical buckles A are smooth surfaces, the inner diameters of the hollow cylindrical buckles A at two ends are slightly larger than the diameter of a vertical adjusting rod, one end of the vertical adjusting rod is inserted into the hollow cylindrical buckles A at two ends, the inner diameters of the two hollow cylindrical buckles A in the middle are slightly larger than the diameter of a welding rivet on the flange of an upper section steel column, and the welding rivet on the flange of the upper section steel column can be sleeved for fixation; hollow grooves are formed in the two end parts of the iron mold A, and horizontal connecting rods are inserted into the hollow grooves; two ends of the horizontal connecting rod are provided with threaded heads A, and the threaded heads A are screwed up through nuts;
the lower column horizontal fixing rod is composed of an iron mold B and hollow cylindrical buckles B which have the same structure as the upper column horizontal fixing rod, screw rods B at the end parts of the four hollow cylindrical buckles B are embedded in key grooves B of the iron mold B and can move in parallel, and threads are arranged inside the two hollow cylindrical buckles B at the two ends of the screw rods B; the lower end of the vertical adjusting rod is provided with a threaded head B, threads in the two hollow cylindrical buckles B at the input end are screwed tightly through the threaded head B, a hexagonal nut is further arranged in the middle of the vertical adjusting rod, and the hexagonal nut is clamped and rotated through a wrench to drive the vertical adjusting rod to move up and down; the inner parts of two hollow cylindrical buckles B in the middle of the lower column horizontal fixing rod are smooth surfaces, the inner diameter of each buckle B is slightly larger than the diameter of a welding rivet on the flange of the lower section type steel column, and the lower section type steel column can be sleeved with the welding rivet on the flange of the lower section type steel column for fixing; and hollow grooves are formed in two end parts of the iron mold B and used for inserting the horizontal connecting rods.
Preferably, the size of the opening of the upper column horizontal fixing frame and the lower column horizontal fixing frame can be adjusted by sliding the horizontal connecting rod.
Preferably, the inner surfaces of the four hollow cylindrical buckles A connected to the upper column horizontal fixing rod are smooth surfaces, the inner surfaces of the four hollow cylindrical buckles B connected to the lower column horizontal fixing rod are tapped with threads, and the inner surfaces of the hollow cylindrical buckles B at the two end parts of the four hollow cylindrical buckles are connected with one end of the vertical adjusting rod through the threads.
Preferably, the vertical adjusting rod is designed to be provided with a threaded head B at the lower end, the upper end of the vertical adjusting rod is smooth, a node with a hexagonal nut shape is designed in the middle of the vertical adjusting rod, the threaded head B at one end of the vertical adjusting rod is screwed into the cylindrical buckle B with threads, the other smooth end of the vertical adjusting rod is inserted into the hollow cylindrical buckle A with the smooth surface in the end part of the upper column horizontal fixing rod, the node of the hexagonal nut in the middle is clamped by a wrench to rotate reversely, the vertical adjusting rod is driven to ascend, and.
Preferably, the vertical adjusting rod rises, the corresponding end of the horizontal fixing frame of the top support upper column rises, the vertical adjusting rod lowers, and the corresponding end of the horizontal fixing frame of the top support upper column lowers.
Preferably, the upper column horizontal fixing frame is fixed near the upper section steel column interface, and the lower column horizontal fixing frame is fixed near the lower section steel column interface.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a section steel post welding butt joint verticality controller, when controlling section steel post welding butt joint verticality deviation work, after upper and lower section steel posts are butt jointed and the verticality of the upper section steel post is primarily adjusted by a cable wind rope pull chain, the interface can not be directly welded, but the section steel post welding butt joint verticality deviation controller is used for fixing the vicinity of the interface of the upper and lower section steel posts, the theodolite is used for retesting, the deviation of the upper section post verticality to a certain direction is found, the effect of accurately correcting the verticality is achieved by reversely rotating a left vertical adjusting rod and a right vertical adjusting rod of the deviation direction of the post by a wrench or reversely rotating two vertical adjusting rods of the opposite directions of the deviation of the post along the direction, the upper and lower section steel posts can be locally fixed at the interface, after the verticality is accurately adjusted, the upper and lower post interface is immediately welded, because the section steel post welding butt joint verticality controller has a, the welding seam deformation influence verticality deviation can be prevented, so that the effect of accurately controlling the installation verticality of the section steel column is achieved, the whole controller is simple to manufacture and convenient to operate, the special tool with feasibility for controlling the welding butt joint verticality of the section steel column is provided, the accuracy of controlling the welding butt joint verticality of the section steel column is guaranteed, and the problem that the accuracy of controlling the welding butt joint verticality of the section steel column is not high at present is solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the upper column horizontal fixing rod of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;
FIG. 5 is a schematic view of the horizontal connecting rod structure of the present invention;
FIG. 6 is a schematic view of the structure of the lower column horizontal fixing rod of the present invention;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6 in accordance with the present invention;
FIG. 8 is a cross-sectional view taken along line D-D of FIG. 6 in accordance with the present invention;
FIG. 9 is a schematic view of a vertical adjustment rod configuration of the present invention;
fig. 10 is a cross-sectional view E-E of fig. 9 of the present invention.
In the figure: the device comprises a1 upper column horizontal fixing frame, a11 upper column horizontal fixing rod, a111 iron mold A, a112 hollow cylindrical buckle A, a113 key groove A, a114 screw A, a 115 hollow groove, a12 horizontal connecting rod, a121 thread head A, a 122 screw cap, a 2 lower column horizontal fixing frame, a 21 lower column horizontal fixing rod, a 211 iron mold B, a 212 hollow cylindrical buckle B, a 213 screw B, a 214 key groove B, 215 threads, a 3 vertical adjusting rod, a 31 thread head B and a 32 hexagonal screw cap.
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, in the embodiment of the present invention: a section steel column welding butt joint verticality controller comprises an upper column horizontal fixing frame 1, a lower column horizontal fixing frame 2 and a vertical adjusting rod 3; the upper column horizontal fixing frame 1 is formed by connecting two upper column horizontal fixing rods 11 into a whole by inserting two horizontal connecting rods 12; the lower column horizontal fixing frame 2 is formed by connecting two lower column horizontal fixing rods 21 into a whole through two horizontal connecting rods 12; the upper column horizontal fixing frame 1 and the lower column horizontal fixing frame 2 are connected into a whole by four vertical adjusting rods 3, the upper column horizontal fixing frame 1 is fixed near an upper section steel column interface, the lower column horizontal fixing frame 2 is fixed near a lower section steel column interface, and the opening sizes of the upper column horizontal fixing frame 1 and the lower column horizontal fixing frame 2 can be adjusted by sliding a horizontal connecting rod 12;
referring to fig. 2-5, the upper column horizontal fixing rod 11 is composed of a long rectangular solid iron mold a111 and four iron hollow cylindrical buckles a112, the iron mold a111 is provided with four key slots a113 in a clamped manner, screws a114 at one end portions of the four hollow cylindrical buckles a112 are embedded in the key slots a113 of the iron mold a111 and can move in parallel, the four hollow cylindrical buckles a112 are internally smooth, the inner diameters of the hollow cylindrical buckles a112 at the two ends are slightly larger than the diameter of the vertical adjusting rod 3, one end of the vertical adjusting rod 3 is inserted into the hollow cylindrical buckles a112 at the two ends, the inner diameters of the two hollow cylindrical buckles a112 in the middle are slightly larger than the diameter of the welding rivet on the flange of the upper section steel column, and the welding rivet on the flange of the upper section steel column can be clamped; hollow grooves 115 are further formed in two end portions of the iron mold A111, and the horizontal connecting rods 12 penetrate through the hollow grooves 115; two ends of the horizontal connecting rod 12 are provided with screw heads A121, and the screw heads A121 are screwed tightly through nuts 122;
referring to fig. 6-10, the lower column horizontal fixing rod 21 is composed of an iron mold B211 and hollow cylindrical buckles B212 having the same structure as the upper column horizontal fixing rod 11, screws B213 at the ends of the four hollow cylindrical buckles B212 are embedded in key slots B214 of the iron mold B211 and can move in parallel, and threads 215 are disposed inside two hollow cylindrical buckles B212 at the two ends; the lower end of the vertical adjusting rod 3 is provided with a thread head B31, the thread head B31 is screwed into threads 215 in two hollow cylindrical buckles B212 at the end part to be screwed, a hexagonal nut 32 is further arranged in the middle of the vertical adjusting rod 3, and the hexagonal nut 32 is clamped and rotated by a wrench to drive the vertical adjusting rod 3 to move up and down; the interiors of two hollow cylindrical buckles B212 in the middle of the lower-column horizontal fixing rod 21 are smooth surfaces, the inner diameter of each hollow cylindrical buckle B is slightly larger than the diameter of the welding rivet on the flange of the lower-section steel column, and the welding rivet on the flange of the lower-section steel column can be sleeved for fixing; hollow grooves 115 are formed in two end portions of the iron mold B211 and are used for inserting the horizontal connecting rods 12.
The inner surfaces of four hollow cylindrical buckles A112 connected with the upper column horizontal fixing rod 11 are smooth surfaces, the inner surfaces of four hollow cylindrical buckles B212 connected with the lower column horizontal fixing rod 21 are tapped with threads 215, and the inner surfaces of the hollow cylindrical buckles B212 at the two end parts are connected with one end of the vertical adjusting rod 3 through the threads 215; the vertical adjusting rod 3 is designed to be provided with a threaded head B31 at the lower end, the upper end is smooth, a node in the shape of a hexagon nut 32 is designed in the middle, the threaded head B31 at one end is screwed into a cylindrical buckle B212 with threads 215, the other smooth end is inserted into a hollow cylindrical buckle A112 of a smooth surface in the end part of the upper column horizontal fixing rod 11, the node of the middle hexagon nut 32 is clamped by a wrench to rotate reversely, the vertical adjusting rod 3 is driven to ascend, and the vertical adjusting rod 3 is driven to descend by forward rotation; vertical regulation pole 3 rises, the corresponding tip of shore upper prop horizontal mount 1 rises, vertical regulation pole 3 reduces, the corresponding tip of shore upper prop horizontal mount 1 reduces, after measuring the discovery deviation of the straightness that hangs down of upper prop, through adjusting about rising post deviation direction two vertical regulation poles 3 or reduce two vertical regulation poles 3 of opposite direction and reach the effect that the straightness that hangs down of accurate correction, after the adjustment straightness that hangs down, can also play the local effect of upper and lower section shaped steel post at fixed kneck, prevent that welding deformation from resulting in the straightness deviation that hangs down of upper section shaped steel post.
The design principle is as follows: the invention provides a section steel post welding butt joint verticality controller, when controlling section steel post welding butt joint verticality deviation work, after upper and lower section steel posts are butt jointed and the verticality of the upper section steel post is primarily adjusted by a cable wind rope pull chain, the interface can not be directly welded, but the section steel post welding butt joint verticality deviation controller is used for fixing the vicinity of the interface of the upper and lower section steel posts, the theodolite is used for retesting, the deviation of the upper section post verticality to a certain direction is found, the effect of accurately correcting the verticality is achieved by reversely rotating the left and right vertical adjusting rods 3 of the post deviation direction or the two vertical adjusting rods 3 in the opposite direction of the forward rotation post deviation by a spanner, the upper and lower section steel posts can be locally fixed at the interface after adjustment of the verticality, the upper and lower post interface is immediately welded after the verticality is accurately adjusted, because the section steel post welding butt joint verticality controller has a local fixing effect on the, the welding seam deformation can be prevented from influencing the verticality deviation, and therefore the effect of accurately controlling the installation verticality of the section steel column is achieved.
In summary, the following steps: the invention provides a section steel column welding butt joint verticality controller, which comprises three parts, namely an upper column horizontal fixing frame 1, a lower column horizontal fixing frame 2 and a vertical adjusting rod 3, wherein the upper column horizontal fixing frame 1 is formed by connecting two upper column horizontal fixing rods 11 into a whole by inserting two horizontal connecting rods 12, hollow cylindrical buckles A112 in the middle of the two upper column horizontal fixing rods 11 are respectively sleeved on welding rivets at the bottoms of flanges at two sides of an upper section steel column, then the two horizontal connecting rods 12 penetrate through holes at two ends of the upper column horizontal fixing rods 11, nuts 122 are screwed and fixed, and the upper column horizontal fixing frame 1 is fixed on the upper section column; the lower column horizontal fixing frame 2 is formed by connecting two lower column horizontal fixing rods 21 into a whole through two horizontal connecting rods 12, a hollow cylindrical buckle B212 in the middle of each lower column horizontal fixing rod 21 sleeves a welding rivet on the top of flanges on two sides of a lower section steel column respectively, then the two horizontal connecting rods 12 penetrate through holes in two ends of each lower column horizontal fixing rod 21, nuts 122 are screwed up and fixed, and the lower column horizontal fixing frame 2 is fixed on the lower section column; the lower end of the vertical adjusting rod 3 is provided with a threaded head B31, the upper end is smooth, the middle part is provided with a hexagon nut 32 node model, the lower end threaded head B31 is screwed into a hollow cylindrical buckle B212 (with internal threads 215) at the end part of the lower column horizontal fixing rod 21 in a rotating way, the upper end is inserted into a hollow cylindrical buckle A112 (with smooth internal surface) at the end part of the upper column horizontal fixing frame 1, the spanner clamps the middle hexagon nut 32 model to rotate the vertical adjusting rod 3, so that the corresponding end part of the upper column horizontal fixing frame, thereby driving the corresponding end of the upper section steel column to ascend and descend in a small range to achieve the effect of adjusting the verticality deviation of the steel column, because the controller has a fixing function on the local part of the interface of the upper section column and the lower section column due to the influence of the butt welding deformation of the section steel column, the verticality deviation of the upper section column caused by the influence of the welding deformation can be prevented, therefore, the effect of accurately controlling the verticality deviation generated in the butt joint installation process of the section steel column is achieved; the whole controller is simple to manufacture and convenient to operate, is a special device with feasibility for controlling the welding, butt joint and perpendicularity of the section steel column, ensures accurate control of the welding, butt joint and installation perpendicularity of the section steel column, and solves the problem of low control accuracy of the welding, butt joint and installation perpendicularity of the section steel column at present.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. A section steel column welding butt joint verticality controller is characterized by comprising an upper column horizontal fixing frame (1), a lower column horizontal fixing frame (2) and a vertical adjusting rod (3); the upper column horizontal fixing frame (1) is formed by connecting two upper column horizontal fixing rods (11) into a whole by inserting two horizontal connecting rods (12); the lower column horizontal fixing frame (2) is formed by connecting two lower column horizontal fixing rods (21) into a whole through two horizontal connecting rods (12); the upper column horizontal fixing frame (1) and the lower column horizontal fixing frame (2) are connected into a whole by four vertical adjusting rods (3);
the upper column horizontal fixing rod (11) is composed of a long rectangular solid iron mold A (111) and four iron hollow cylindrical buckles A (112), the iron mold A (111) is provided with four key slots A (113) in a clamping mode, a screw A (114) at one end part of each of the four hollow cylindrical buckles A (112) is embedded in the key slot A (113) of the iron mold A (111) and can move in parallel, the four hollow cylindrical buckles A (112) are internally smooth, the inner diameters of the hollow cylindrical buckles A (112) at the two ends are slightly larger than that of the vertical adjusting rod (3), one end of the vertical adjusting rod (3) is inserted into the hollow cylindrical buckles A (112) at the two ends, the inner diameters of the two hollow cylindrical buckles A (112) in the middle are slightly larger than that of a welding rivet on an upper section steel column, and the welding rivet on the flange of the upper section steel column can be hooped for fixing; hollow grooves (115) are further formed in the two end portions of the iron mold A (111), and horizontal connecting rods (12) are inserted into the hollow grooves (115); two ends of the horizontal connecting rod (12) are provided with threaded heads A (121), and the threaded heads A (121) are screwed down through nuts (122);
the lower column horizontal fixing rod (21) is composed of an iron mold B (211) and hollow cylindrical buckles B (212) which have the same structure as the upper column horizontal fixing rod (11), screw rods B (213) at the end parts of the four hollow cylindrical buckles B (212) are embedded in key grooves B (214) of the iron mold B (211) and can move in parallel, and threads (215) are arranged inside the two hollow cylindrical buckles B (212) at the two ends of the lower column horizontal fixing rod; the lower end of the vertical adjusting rod (3) is provided with a threaded head B (31), threads (215) in two hollow cylindrical buckles B (212) at the input end are screwed up by screwing the threaded head B (31), a hexagonal nut (32) is further arranged in the middle of the vertical adjusting rod (3), and the hexagonal nut (32) is clamped and rotated by a wrench to drive the vertical adjusting rod (3) to move up and down; the interiors of two hollow cylindrical buckles B (212) in the middle of the lower-column horizontal fixing rod (21) are smooth surfaces, the inner diameter of each hollow cylindrical buckle B is slightly larger than the diameter of the welding rivet on the flange of the lower-section steel column, and the welding rivet on the flange of the lower-section steel column can be sleeved for fixing; and hollow grooves (115) are formed in two end parts of the iron mold B (211) and used for penetrating the horizontal connecting rods (12).
2. The structural steel column welding butt joint verticality controller of claim 1, wherein: the opening sizes of the upper column horizontal fixing frame (1) and the lower column horizontal fixing frame (2) can be adjusted through the sliding horizontal connecting rod (12).
3. The structural steel column welding butt joint verticality controller of claim 1, wherein: the inner surfaces of four hollow cylindrical buckles A (112) connected on the upper column horizontal fixing rod (11) are smooth surfaces, the inner surfaces of four hollow cylindrical buckles B (212) connected on the lower column horizontal fixing rod (21) are tapped with threads (215) and connected with one end of the vertical adjusting rod (3) through the threads (215), and the inner surfaces of the hollow cylindrical buckles B (212) at the two end parts are tapped with the threads (215).
4. The structural steel column welding butt joint verticality controller of claim 3, wherein: the vertical adjusting rod (3) is designed to be provided with a threaded head B (31) at the lower end, the upper end is smooth, a node of a hexagonal nut (32) shape is designed in the middle, the threaded head B (31) at one end is screwed into a cylindrical buckle B (212) with threads (215), the other smooth end is inserted into a hollow cylindrical buckle A (112) of a smooth surface in the end part of the upper column horizontal fixing rod (11), the node of the hexagonal nut (32) in the middle is clamped by a wrench to rotate reversely, the vertical adjusting rod (3) is driven to ascend, and the vertical adjusting rod (3) is driven to descend by forward rotation.
5. The section steel column welding butt joint verticality controller according to claim 4, wherein the vertical adjusting rod (3) is raised, the corresponding end of the horizontal fixing frame (1) of the top bracing upper column is raised, the vertical adjusting rod (3) is lowered, and the corresponding end of the horizontal fixing frame (1) of the top bracing upper column is lowered.
6. The section steel column welding butt joint verticality controller according to claim 1, wherein the upper column horizontal fixing frame (1) is fixed near the upper section steel column interface, and the lower column horizontal fixing frame (2) is fixed near the lower section steel column interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091688.3A CN109138459B (en) | 2018-09-19 | 2018-09-19 | Section steel post welding butt joint straightness controller that hangs down |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091688.3A CN109138459B (en) | 2018-09-19 | 2018-09-19 | Section steel post welding butt joint straightness controller that hangs down |
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| CN109138459A CN109138459A (en) | 2019-01-04 |
| CN109138459B true CN109138459B (en) | 2020-04-14 |
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| CN111042552B (en) * | 2019-12-26 | 2020-08-18 | 泰安市联强远大住宅工业有限公司 | Prefabricated post location leading truck of assembly type structure concrete |
| CN114439258A (en) * | 2021-12-28 | 2022-05-06 | 中交一公局集团有限公司 | Steel column connection verticality regulator |
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| CN207392772U (en) * | 2017-09-13 | 2018-05-22 | 中建一局集团第二建筑有限公司 | Cable-free wind rope steel stand alignment system |
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| CN102888998A (en) * | 2012-04-19 | 2013-01-23 | 中国建筑第四工程局有限公司 | Method and structure for lifting supporting steel column |
| CN103216112A (en) * | 2013-04-01 | 2013-07-24 | 广东金辉华集团有限公司 | Upper and lower steel column abutting structure system and one-time installing and fixing method thereof |
| CN203247859U (en) * | 2013-05-16 | 2013-10-23 | 中国十七冶集团有限公司 | Alignment device for butt joint perpendicularity of large steel columns |
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