CN221703203U - Positioning device for steel structure installation - Google Patents

Abstract

The utility model provides a positioning device for mounting a steel structure, which comprises a stabilizing frame, sliding blocks and side positioning components, wherein a built-in space is arranged in the stabilizing frame, four hydraulic cylinders are fixedly arranged in the built-in space and are respectively arranged at four corners, hydraulic rods are arranged in the hydraulic cylinders, a center column is fixedly arranged at the center part of the built-in space, the sliding blocks are slidably arranged on the center column, the height positions of the hydraulic rods are adjusted, the distance between a stabilizing plate and the surface of the stabilizing frame is adjusted, a steel frame is placed in a positioning section for limiting the mounting position of the steel frame, the positioning section is convenient for initially positioning the steel frame and is convenient for workers to mount, the stabilizing plate can extrude and fix the steel frame from above and is matched with the side positioning components, and a rotating rod is rotated, so that the extruding plate acts on the side of the steel frame in an extruding mode, and the height positions of the hydraulic rods are adjusted, thereby being suitable for mounting steel frames with different sizes.

Description

A positioning device for steel structure installation

Technical Field

The utility model relates to the technical field of steel structure installation, in particular to a positioning device for steel structure installation.

Background Art

Steel structure is a structure made of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings, bridges and other fields. Steel structures are prone to rust. Generally, steel structures need to be rust-proofed, galvanized or painted, and they need regular maintenance;

When existing steel structures are used and installed, they are mostly fixed directly by welding or bolts. Without preliminary fixation of the position of the steel structure, it is necessary to lift it with machinery and equipment. In addition, the entire installation process is cumbersome. The positioning of steel structures at different angles is not very convenient for installation. It is not possible to reinforce and install multiple sides and angles of the steel frame, which is not conducive to the firmness of the overall steel frame.

Utility Model Content

The utility model provides a positioning device for steel structure installation, so as to solve the problems of steel structure installation positioning, fixing and angular direction installation proposed in the above background technology.

The technical solution of the utility model is achieved in this way:

A positioning device for steel structure installation, comprising a stabilizing frame, a sliding block and a side positioning assembly, wherein a built-in space is provided inside the stabilizing frame, four hydraulic cylinders are fixedly installed in the built-in space and arranged at four corners respectively, a hydraulic rod is provided inside the hydraulic cylinder, a central column is fixedly installed at the center of the built-in space, a sliding block is slidably installed on the central column, through holes are penetrated at the four corners of the top of the stabilizing frame, and a top plate is fixedly connected to the top of the stabilizing frame;

Four support columns are fixedly installed at the four corners of the sliding block, and the support columns extend through through holes to the outside of the stable frame. A stable plate is fixedly installed on the top of the support columns, and side positioning components are fixedly installed on both sides of the stable frame. A steel frame is placed on the top of the stable frame, and the hydraulic rod is supported at the bottom of the stable plate. A rotating disk is rotatably connected to the middle part of the stable plate, and an angle positioning component is provided on the rotating disk;

The angle positioning assembly includes: a column, a mounting block and a rectangular block. The column is fixedly connected to the surface of the rotating disk, the mounting block is slidably connected to the column, a rectangular block is fixedly installed on one side of the mounting block, the interior of the rectangular block is used to install the steel frame, and the rectangular block array is distributed around the mounting block and has four. Four hydraulic cylinders are used to support the bottom of the sliding block. The hydraulic rod is lifted up and down so that the distance between the stabilizing plate and the surface of the stabilizing frame can be adjusted to facilitate the installation of steel frames of different sizes. The rotating disk can be rotated to facilitate the position angle adjustment of the angle positioning assembly. The mounting block is slidably connected to the column, and the mounting block can move a distance on the column to facilitate the rotation under force. The rotation is supported by the rotating disk. The rectangular block is used to install the steel frame. The rectangular block has four steel frames that can be assembled in multiple directions.

Preferably, the rectangular block is provided with a rectangular groove for sleeve-mounting the steel frame, the top of the rectangular block is fixedly connected with a sleeve, and the sleeve is threadedly connected with a reinforcing screw rod. The steel frame is embedded in the rectangular groove, the sleeve is threadedly connected with the reinforcing screw rod, and the reinforcing screw rod can be rotated to squeeze and stabilize the steel frame in the rectangular groove, so as to preliminarily stabilize the installation of the steel frame.

Preferably, three top plates are evenly distributed on the top of the stable frame, and two positioning intervals are formed between the top plates. The positioning intervals are used to place and position the steel frame, and an elliptical groove is provided on the surface of the top plate. When the steel frame is stably installed, the steel frame is placed in the positioning interval to define the initial position of the steel frame. The elliptical groove is convenient for inserting and installing positioning bolts to stabilize the steel frame and prevent it from deflecting.

Preferably, the side positioning assembly comprises: a side frame, a first sliding plate, a second sliding plate and an extrusion plate, wherein the side frame is fixedly mounted on both sides of the stabilizing frame, the first sliding plate and the second sliding plate are respectively slidably connected to both sides of the inside of the side frame, and the extrusion plate is fixedly connected to one side of the first sliding plate. When the steel frame is stabilized in the positioning interval, the side positioning assembly can stabilize the side of the steel frame.

Preferably, the extrusion plate and the first sliding plate are arranged on both sides of the side frame, a rotating rod is rotatably connected inside the side frame, a round handle is fixedly installed on one end of the rotating rod outside the side frame, and a gear is fixedly connected on the other end of the rotating rod inside the side frame. The rotating rod is rotated by rotating the round handle, so as to adjust the moving position of the extrusion plate by force.

Preferably, a rack is fixedly connected to one side of the first sliding plate, the rack and the gear are meshed with each other, the extrusion plate acts on the side of the steel frame, and the rack and the extrusion plate are also arranged on the second sliding plate. The gear is fixed on the rotating rod, and when the rotating rod rotates, it drives the gear to rotate. Since the rack and the gear are meshed with each other, the first sliding plate and the second sliding plate move inward or outward at the same time, and the extrusion plate moves inward to press on the side of the steel frame, so as to strengthen the stability of the side of the steel frame and prevent tilting and deviation.

Preferably, the oval groove is provided in the extrusion plate, the second sliding plate and the oval groove, and a positioning bolt is installed through the inside of the oval groove. The height of the hydraulic rod is adjusted so that the stabilizing plate is pressed against the top of the steel frame, and the rotating rod is rotated so that the extrusion plate is pressed against the side of the steel frame, and then the positioning bolt is inserted into the oval groove and the steel frame for reinforcement and stabilization.

Preferably, the outer periphery of the reinforcing screw is fixedly connected with an auxiliary block, and the outer periphery of the auxiliary block is arrayed with four side holes, and a handle is rotatably connected inside the side hole, and the outer wall of the rectangular block is penetrated with a bolt hole. When rotating the reinforcing screw, the tool handle is rotatably installed in the side hole, and multiple handles can be installed to facilitate rotation under force. After tightening, the handle is rotated to remove and reused without being fixed to the auxiliary block. The positioning bolt is inserted from the bolt hole to fix the steel frame installed inside the rectangular groove.

Preferably, a bracket is fixed on the surface of the stabilizing plate below the rectangular block, and the surface of the bracket is provided with a positioning groove, and eight positioning grooves are arranged at 90° and 45° on the surface of the bracket. The installation block is lifted close to the top of the pile body and rotated. According to the installation requirements, the rectangular block is limited to the positioning groove of 90° or 45°, so as to facilitate the splicing and assembly of the steel frame in various directions. The bracket can stabilize the rectangular block well to prevent position deviation during the installation process. At the same time, the steel frame installed on the top of the stabilizing plate can squeeze and stabilize the steel frame installed in the positioning interval through the stabilizing plate, further improving the stability during installation.

By adopting the above technical solution, the beneficial effects of the utility model are as follows:

The utility model is provided with: adjusting the height position of the hydraulic rod so that the distance between the stabilizing plate and the surface of the stabilizing frame is adjusted, and the steel frame is placed in the positioning interval to limit the installation position of the steel frame. The positioning interval is convenient for preliminary positioning of the steel frame and convenient for workers to install. The stabilizing plate can squeeze and fix the steel frame from above, cooperate with the side positioning assembly, rotate the rotating rod, so that the squeezing plate squeezes the side of the steel frame, and the height position of the hydraulic rod is adjusted, which is suitable for the installation of steel frames of different sizes;

When converting the angle of the rectangular block, lift the installation block close to the top of the pile and rotate it. According to the installation needs, the rectangular block is limited to the 90° or 45° positioning edge groove to facilitate the splicing and assembly of multi-directional steel frames. The bracket can stabilize the rectangular block well to prevent position displacement during the installation process. At the same time, the steel frame installed on the top of the stabilizing plate can squeeze and stabilize the steel frame installed in the positioning interval through the stabilizing plate, thereby further improving the stability during installation.

In summary, the positioning interval facilitates the installation of the steel frame. The stabilizing plate reinforces the top of the steel frame, and the extrusion plate reinforces the side of the steel frame. It can initially position the steel frame and stably install it in multiple directions and angles, greatly improving the stability and firmness of the steel structure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

Fig. 1 is a perspective view of the utility model;

Fig. 2 is an oblique view of the utility model;

Fig. 3 is a left view of the utility model;

FIG4 is a partial exploded view of the utility model;

FIG5 is a partial schematic diagram of the utility model;

Fig. 6 is a partial cross-sectional view of the utility model;

FIG7 is a top view of the present utility model;

FIG8 is a schematic cross-sectional view of FIG7 of the present utility model;

FIG. 9 is a schematic diagram of a rectangular block of the present invention.

Among them: 1. stabilizing frame; 11. built-in space; 12. hydraulic cylinder; 121. hydraulic rod; 13. center column; 14. top plate; 15. positioning interval; 16. elliptical groove; 17. through hole; 2. sliding block; 21. supporting column; 22. stabilizing plate; 23. rotating disk; 24. column; 25. mounting block; 26. rectangular block; 261. rectangular groove; 262. sleeve; 263. reinforcing screw; 264. auxiliary block; 265. side hole; 266. handle; 267. bolt hole; 27. bracket; 28. positioning side groove; 3. steel frame; 4. side frame; 41. first sliding plate; 42. extrusion plate; 43. round handle; 44. rotating rod; 441. gear; 45. rack; 46. second sliding plate; 5. positioning bolt.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Referring to FIGS. 1 to 9 , a positioning device for steel structure installation includes a stabilizing frame 1, a sliding block 2 and a side positioning assembly. A built-in space 11 is provided inside the stabilizing frame 1. Four hydraulic cylinders 12 are fixedly installed in the built-in space 11 and arranged at four corners respectively. A hydraulic rod 121 is provided inside the hydraulic cylinder 12. A central column 13 is fixedly installed at the center of the built-in space 11. The sliding block 2 is slidably installed on the central column 13. Through holes 17 are penetrated at the four corners of the top of the stabilizing frame 1. A top plate 14 is fixedly connected to the top of the stabilizing frame 1.

Four support columns 21 are fixedly installed at the four corners of the sliding block 2. The support columns 21 extend through the through holes 17 to the outside of the stable frame 1. A stable plate 22 is fixedly installed on the top of the support columns 21. Side positioning components are fixedly installed on both sides of the stable frame 1. A steel frame 3 is placed on the top of the stable frame 1. The hydraulic rod 121 is supported on the bottom end of the stable plate 22. A rotating disk 23 is rotatably connected to the middle part of the stable plate 22, and an angle positioning component is provided on the rotating disk 23.

Four hydraulic cylinders 12 are used to support the bottom of the sliding block 2. The hydraulic rod 121 is raised and lowered so that the distance between the stabilizing plate 22 and the surface of the stabilizing frame 1 can be adjusted to facilitate the installation of steel frames 3 of different sizes. The rotating disk 23 can be rotated to facilitate the position angle adjustment of the angle positioning component.

The angle positioning assembly includes: a column 24, a mounting block 25 and a rectangular block 26. The column 24 is fixedly connected to the surface of the rotating disk 23, and the mounting block 25 is slidably connected to the column 24. A rectangular block 26 is fixedly installed on one side of the mounting block 25. The interior of the rectangular block 26 is used to install the steel frame 3. Four rectangular blocks 26 are arranged in an array around the mounting block 25.

The mounting block 25 is slidably connected to the column 24. The mounting block 25 can move a distance on the column 24 to facilitate force rotation. The rotation is supported by the rotating disk 23. The rectangular block 26 is used to install the steel frame 3. The rectangular block 26 is provided with four steel frames 3 that can be assembled in multiple directions.

Specifically, a rectangular groove 261 for sleeve-mounting the mounting steel frame 3 is provided inside the rectangular block 26 , a sleeve 262 is fixedly connected to the top of the rectangular block 26 , and a reinforcing screw 263 is threadedly connected inside the sleeve 262 .

The steel frame 3 is embedded in the rectangular groove 261 , and the sleeve 262 is threadedly connected with the reinforcing screw 263 . Rotating the reinforcing screw 263 can squeeze and stabilize the steel frame 3 in the rectangular groove 261 , so as to preliminarily stabilize the installation of the steel frame 3 .

Specifically, three top plates 14 are evenly distributed on the top of the stable frame 1 , and two positioning intervals 15 are formed between the top plates 14 . The positioning intervals 15 are used to place and position the steel frames 3 . An elliptical groove 16 is penetrated through the surface of the top plate 14 .

When the steel frame 3 is stably installed, the steel frame 3 is placed in the positioning interval 15 to define the initial position of the steel frame 3. The elliptical groove 16 is used to facilitate the insertion and installation of the positioning bolt 5 to stabilize the steel frame 3 and prevent it from deflecting.

Specifically, the side positioning assembly includes: a side frame 4, a first sliding plate 41, a second sliding plate 46 and an extrusion plate 42. The side frame 4 is fixedly installed on both sides of the stabilizing frame 1. The first sliding plate 41 and the second sliding plate 46 are respectively slidably connected to both sides of the inside of the side frame 4. The extrusion plate 42 is fixedly connected to one side of the first sliding plate 41.

When the steel frame 3 is stably located in the positioning interval 15 , the side positioning assembly can stabilize the side of the steel frame 3 .

Specifically, the extrusion plate 42 and the first sliding plate 41 are arranged on both sides of the side frame 4, and a rotating rod 44 is rotatably connected inside the side frame 4. One end of the rotating rod 44 is fixedly installed with a round handle 43 outside the side frame 4, and the other end of the rotating rod 44 is fixedly connected with a gear 441 inside the side frame 4.

The rotating rod 44 is rotated by rotating the round handle 43 so as to adjust the moving position of the squeezing plate 42 under force.

Specifically, a rack 45 is fixedly connected to one side of the first sliding plate 41 , the rack 45 and the gear 441 are meshed with each other, the extrusion plate 42 acts on the side of the steel frame 3 , and the rack 45 and the extrusion plate 42 are also arranged on the second sliding plate 46 .

The gear 441 is fixed on the rotating rod 44. When the rotating rod 44 rotates, the gear 441 is driven to rotate. Since the rack 45 and the gear 441 are meshed with each other, the first sliding plate 41 and the second sliding plate 46 move inward or outward at the same time, and the inward-moving extrusion plate 42 is squeezed on the side of the steel frame 3, so as to strengthen the stability of the side of the steel frame 3 and prevent tilting and deviation.

Specifically, the elliptical groove 16 is provided in the extrusion plate 42 , the second sliding plate 46 and the elliptical groove 16 , and a positioning bolt 5 is installed penetratingly inside the elliptical groove 16 .

By adjusting the height of the hydraulic rod 121, the stabilizing plate 22 is squeezed on the top of the steel frame 3, and the rotating rod 44 is rotated to squeeze the squeezing plate 42 on the side of the steel frame 3. The positioning bolts 5 are used for reinforcement, and the positioning bolts 5 are inserted into the elliptical groove 16 and the steel frame 3 for reinforcement and stabilization.

Specifically, the outer periphery of the reinforcing screw rod 263 is fixedly connected with an auxiliary block 264 , and the outer periphery of the auxiliary block 264 is provided with four side holes 265 in an array, and the handle 266 is rotatably connected inside the side hole 265 . The outer wall of the rectangular block 26 is penetrated with a bolt hole 267 .

When rotating the reinforcing screw 263, the tool handle 266 is rotatably installed in the side hole 265. Multiple handles 266 can be installed to facilitate rotation under force. After tightening, the handle 266 is rotated to be removed and reused. It does not need to be fixed on the auxiliary block 264. The positioning bolt 5 is inserted from the bolt hole 267 to fix the steel frame 3 installed inside the rectangular groove 261.

Specifically, a bracket 27 is fixed to the surface of the stabilizing plate 22 below the rectangular block 26 , and a positioning groove 28 is provided on the surface of the bracket 27 . There are eight positioning grooves 28 on the surface of the bracket 27 , arranged at angles of 90° and 45°.

Lift the mounting block 25 close to the top of the column 24 and rotate it. According to the installation requirements, limit the rectangular block 26 to the positioning edge groove 28 of 90° or 45° to facilitate the splicing and assembly of the steel frame 3 in various directions. The bracket 27 can stabilize the rectangular block 26 well to prevent position displacement during the installation process. At the same time, the steel frame 3 installed on the top of the stabilizing plate 22 can squeeze and stabilize the steel frame 3 installed in the positioning interval 15 through the stabilizing plate 22, thereby further improving the stability during installation.

Embodiment 1: In the figure, the height position of the hydraulic rod 121 is adjusted so that the distance between the stabilizing plate 22 and the surface of the stabilizing frame 1 is adjusted, and the steel frame 3 is placed in the positioning interval 15 to limit the installation position of the steel frame 3. The round handle 43 is rotated to rotate the rotating rod 44, and the rack 45 and the gear 441 are engaged with each other, so that the first sliding plate 41 and the second sliding plate 46 move inward or outward at the same time, and the extrusion plate 42 is moved inward to squeeze the side of the steel frame 3, so as to strengthen the stability of the side of the steel frame 3 and prevent tilting and deviation. After the side is stable, the hydraulic rod 121 is adjusted downward, that is, the stabilizing plate 22 is squeezed on the top of the steel frame 3, so as to further strengthen the stabilization effect and prevent the steel frame 3 from deviating in the positioning interval 15.

Embodiment 2: The steel frame 3 is embedded in the rectangular block 26. The steel frame 3 inside the rectangular groove 261 can be squeezed and stabilized by rotating the reinforcing screw 263, which is used for the preliminary stable installation of the steel frame 3. The directions of the multiple rectangular blocks 26 can facilitate the assembly of steel frames in multiple angles. There is no need to install multiple connectors, and the installation is simple. When it is necessary to convert the angle of the rectangular block 26, the installation block 25 is lifted up close to the top of the column 24 and rotated. According to the installation requirements, the rectangular block 26 is limited to the positioning edge groove 28 of 90° or 45°, so as to facilitate the splicing and assembly of the steel frame 3 in multiple directions. The bracket 27 can stabilize the rectangular block 26 well to prevent position displacement during the installation process.

Working principle:

The height position of the hydraulic rod 121 is adjusted so that the distance between the stabilizing plate 22 and the surface of the stabilizing frame 1 is adjusted, and the steel frame 3 is placed in the positioning interval 15 to limit the installation position of the steel frame 3. The round handle 43 is rotated to rotate the rotating rod 44, and the rack 45 and the gear 441 are meshed with each other, so that the first sliding plate 41 and the second sliding plate 46 move inward or outward at the same time, and the extrusion plate 42 is moved inward to squeeze the side of the steel frame 3, so as to strengthen the stability of the side of the steel frame 3. After the side is stable, the hydraulic rod 121 is adjusted downward, that is, the stabilizing plate 22 is squeezed on the top of the steel frame 3 to further strengthen the stability. The steel frame 3 is fixed in the positioning interval 15 to prevent the steel frame 3 from being offset. The positioning bolts 5 are used for reinforcement. The positioning bolts 5 are inserted into the elliptical groove 16 and the steel frame 3 to reinforce and stabilize the steel structure, so as to achieve the installation and positioning of the steel structure. The steel frame 3 is embedded in the rectangular block 26. The steel frame 3 in the rectangular groove 261 can be squeezed and stabilized by rotating the reinforcing screw 263, which is used for the preliminary stable installation of the steel frame 3. When it is necessary to convert the angle of the rectangular block 26, the mounting block 25 is lifted close to the top of the column 24 and rotated. The rectangular block 26 is limited to the positioning edge groove 28 at 90° or 45° according to the installation requirements.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A positioning device for steel structure installation, characterized in that it comprises a stabilizing frame (1), a sliding block (2) and a side positioning assembly, wherein the stabilizing frame (1) is provided with a built-in space (11), four hydraulic cylinders (12) are fixedly installed in the built-in space (11) and are arranged at four corners respectively, a hydraulic rod (121) is provided inside the hydraulic cylinder (12), a central column (13) is fixedly installed at the center of the built-in space (11), a sliding block (2) is slidably installed on the central column (13), through holes (17) are penetrated at the four corners of the top of the stabilizing frame (1), and a top plate (14) is fixedly connected to the top of the stabilizing frame (1); Four support columns (21) are fixedly installed at the four corners of the sliding block (2), and the support columns (21) extend through the through holes (17) to the outside of the stabilizing frame (1). A stabilizing plate (22) is fixedly installed on the top of the support columns (21), and side positioning components are fixedly installed on both sides of the stabilizing frame (1). A steel frame (3) is placed on the top of the stabilizing frame (1), and the hydraulic rod (121) is supported on the bottom end of the stabilizing plate (22). A rotating disk (23) is rotatably connected to the middle part of the stabilizing plate (22), and an angle positioning component is provided on the rotating disk (23); The angle positioning assembly comprises: a column (24), a mounting block (25) and a rectangular block (26); the column (24) is fixedly connected to the surface of a rotating disk (23); the mounting block (25) is slidably connected to the column (24); a rectangular block (26) is fixedly mounted on one side of the mounting block (25); the interior of the rectangular block (26) is used to mount a steel frame (3); and four rectangular blocks (26) are arranged in an array around the mounting block (25). 2. A positioning device for steel structure installation according to claim 1, characterized in that: a rectangular groove (261) for sleeve-mounting the installation steel frame (3) is provided inside the rectangular block (26), a sleeve (262) is fixedly connected to the top of the rectangular block (26), and a reinforcing screw (263) is threadedly connected inside the sleeve (262). 3. A positioning device for steel structure installation according to claim 1, characterized in that: three top plates (14) are evenly distributed on the top of the stable frame (1), two positioning intervals (15) are formed between the top plates (14), and the positioning intervals (15) are used to place and position the steel frame (3), and an elliptical groove (16) is penetrated through the surface of the top plate (14). 4. A positioning device for steel structure installation according to claim 1, characterized in that: the side positioning assembly comprises: a side frame (4), a first sliding plate (41), a second sliding plate (46) and an extrusion plate (42), the side frame (4) is fixedly installed on both sides of the stabilizing frame (1), the first sliding plate (41) and the second sliding plate (46) are respectively slidably connected to both sides inside the side frame (4), and the extrusion plate (42) is fixedly connected to one side of the first sliding plate (41). 5. A positioning device for steel structure installation according to claim 4, characterized in that: the extrusion plate (42) and the first sliding plate (41) are arranged on both sides of the side frame (4), and a rotating rod (44) is rotatably connected inside the side frame (4), one end of the rotating rod (44) is fixedly installed with a round handle (43) outside the side frame (4), and the other end of the rotating rod (44) is fixedly connected with a gear (441) inside the side frame (4). 6. A positioning device for steel structure installation according to claim 4 or 5, characterized in that: a rack (45) is fixedly connected to one side of the first sliding plate (41), the rack (45) and the gear (441) are meshed with each other, the extrusion plate (42) acts on the side of the steel frame (3), and the rack (45) and the extrusion plate (42) are also arranged on the second sliding plate (46). 7. A positioning device for steel structure installation according to claim 3, characterized in that: the elliptical groove (16) is arranged in the extrusion plate (42), the second sliding plate (46) and the elliptical groove (16), and a positioning bolt (5) is installed through the inside of the elliptical groove (16). 8. A positioning device for steel structure installation according to claim 2, characterized in that: the outer periphery of the reinforcing screw rod (263) is fixedly connected with an auxiliary block (264), the outer periphery of the auxiliary block (264) is provided with four side holes (265) in an array, the inside of the side hole (265) is rotatably connected with a handle (266), and the outer wall of the rectangular block (26) is penetrated with a bolt hole (267). 9. A positioning device for steel structure installation according to claim 1, characterized in that: a bracket (27) is provided below the rectangular block (26) and fixed on the surface of the stabilizing plate (22), and a positioning edge groove (28) is provided on the surface of the bracket (27). 10. A positioning device for steel structure installation according to claim 8, characterized in that: eight positioning edge grooves (28) are provided on the surface of the bracket (27) and are arranged at angles of 90° and 45°.