A precise positioning device for the installation of steel structure columns

Abstract

The present application discloses a precise positioning device for the installation of steel structure columns, which relates to the field of the installation of steel structure columns. It includes a peripheral plate sleeved on the outer side of the lower steel column. There is a distance between the inner wall of the peripheral plate and the outer wall of the lower steel column. A plurality of tightening screws are threadedly connected along the circumference of the upper edge of the peripheral plate. A tightening plate is fixed at one end of the tightening screw close to the lower steel column. The tightening screw is used to drive the tightening plate to abut against the outer wall of the lower steel column. A plurality of roller shafts are arranged along the circumference of the upper edge of the peripheral plate. The inner edge of the roller shaft is flush with the outer wall of the lower steel column. The roller shaft is used to contact the outer wall of the upper steel column. The present application has the effect of reducing the influence on the steel structure column itself and ensuring the self-strength of the steel structure column.

Description

Technical Field

[0001] The present invention relates to the field of steel structure column installation, and in particular to a precise positioning device for steel structure column installation. Background Art

[0002] As a commonly used building structure in the construction industry, during the actual construction process, the upper and lower adjacent steel structure columns are respectively the lower steel column and the upper steel column. After the lower steel column is fixed, the upper steel column needs to be vertically lowered and aligned with the top of the lower steel column.

[0003] During this process, due to the heavy self-weight of the steel structure column, it is very difficult to achieve precise alignment of the upper steel column and the lower steel column during the hoisting process. Therefore, generally, a positioning tooling needs to be welded on the outer wall of the lower steel column to position the lowering of the upper steel column. However, since the positioning tooling needs to be welded to the outer wall of the steel structure column, in the actual construction process, this positioning method has a greater impact on the self-structure of the steel structure column. Summary of the Invention

[0004] In order to reduce the impact of the positioning device on the structure of the steel structure column, the present application provides a precise positioning device for steel structure column installation.

[0005] The precise positioning device for steel structure column installation provided by the present application adopts the following technical solutions:

[0006] A precise positioning device for steel structure column installation includes an outer plate sleeved on the outer side of the lower steel column. A distance is left between the inner wall of the outer plate and the outer wall of the lower steel column. A plurality of tightening screws are threadedly connected along the circumferential direction of the outer plate. A tightening plate is fixed at one end of the tightening screw close to the lower steel column. The tightening screw is used to drive the tightening plate to abut against the outer wall of the lower steel column. A plurality of roller shafts are arranged along the circumferential direction of the outer plate. The inner edge of the roller shaft is flush with the outer wall of the lower steel column. The roller shaft is used to contact the outer wall of the upper steel column.

[0007] By adopting the above technical solutions, the outer plate is arranged on the outer side of the lower steel column. The tightening screw is adjusted so that the tightening plate abuts against the outer wall of the lower steel column. The tightening screw tightens the lower steel column, restricting the relative movement between the outer plate and the lower steel column, realizing the connection between the outer plate and the lower steel column. When the lower steel column is lowered, the roller shaft plays a guiding role for the upper steel column, which is beneficial to the precise alignment of the upper steel column and the lower steel column. Compared with the method of welding and fixing the positioning tooling in the related art, the connection method in the present application reduces the impact on the steel structure column itself, ensures the self-strength of the steel structure column, and this connection method is convenient for the positioning device to be used repeatedly, reducing the waste of materials, meeting the requirements of energy conservation and environmental protection.

[0008] Preferably, ear plates are fixedly arranged on the outer wall of the lower steel column, and the outer plate is placed on the ear plates.

[0009] By adopting the above technical solution, the peripheral plate is placed on the ear plate, which provides preliminary support for the peripheral plate and facilitates the staff to adjust the tightening screw, realizing the connection between the peripheral plate and the lower steel column.

[0010] Preferably, the peripheral plate comprises two groups of symmetrically arranged steel plates, and the two groups of steel plates are connected by connecting pins.

[0011] By adopting the above technical solution, when installing the peripheral plate, first place the two groups of steel plates on the ear plates of the lower steel column, and then connect the two groups of steel plates by connecting pins, which is convenient for operation.

[0012] Preferably, adjusting screws corresponding to the roller shafts one by one are threadedly connected to the peripheral plate, the roller shafts are connected to one ends of the adjusting screws close to the upper steel column, and scales are arranged on both the tightening screw and the adjusting screw.

[0013] By adopting the above technical solution, the staff can adjust the adjusting screw and the tightening screw according to the different sizes of the steel structure columns, which increases the adaptability of the positioning device. The setting of the scale is convenient for the staff to observe the moving distance of the tightening screw, and then accurately adjust the moving distance of the adjusting screw according to the moving distance of the tightening screw.

[0014] Preferably, the axis direction of the roller shaft is horizontal, the roller shaft is rotatably connected to the adjusting screw through a connecting plate, and a limiting member for keeping the axis of the roller shaft horizontal is arranged on the peripheral plate.

[0015] By adopting the above technical solution, the roller shaft with a horizontal axis is beneficial for the upper steel column to enter between multiple roller shafts, and the setting of the limiting member restricts the rotation of the roller shaft, realizing the limitation of the roller shaft.

[0016] Preferably, the limiting member is arranged as a telescopic plate, one end of the telescopic plate is connected to the peripheral plate, and the other end of the telescopic plate is connected to the connecting plate.

[0017] By adopting the above technical solution, when the adjusting screw rotates, the telescopic plate expands and contracts with the rotation of the adjusting screw, restricting the rotation of the roller shaft relative to the peripheral plate.

[0018] Preferably, the peripheral plate comprises two side plates arranged at intervals and a connecting plate connected between the two side plates. The side plates comprise a fixed plate fixed to the connecting plate and a moving plate slidably connected to the outside of the fixed plate, and a driving member for driving the moving plate to move is arranged on the fixed plate.

[0019] By adopting the above technical solution, the staff can drive the moving plate to move through the driving member according to the different sizes of the steel structure columns, adjust the size of the side plate, and further improve the adaptability of the positioning device.

[0020] Preferably, the driving member is arranged as a driving airbag. One end of the driving airbag is fixedly arranged on the fixed plate, and the other end of the driving airbag is connected to one side of the moving plate close to the fixed plate. By inflating the driving airbag, the moving plate can move away from the fixed plate under the action of the driving airbag.

[0021] By adopting the above technical solution, the driving airbag is inflated through the inflation port of the driving airbag. During the inflation process of the driving airbag, the driving airbag drives the moving plate to move away from the fixed plate until the two moving plates can be connected by a connecting pin. By inflating the driving airbag, the driving of the moving plate is realized. Compared with rigid driving members such as cylinders and electric cylinders, the driving airbag has a lighter mass, reduces the burden on the positioning device caused by the increase of the driving member, and reduces the wear on the outer wall of the lower steel column and the pressure on the ear plate.

[0022] Preferably, the driving airbag is located outside the fixed plate, and a receiving groove is formed on the fixed plate. When the driving airbag is in an inflated state, one side of the driving airbag extends into the inner side of the fixed plate through the receiving groove and abuts against the outer wall of the lower steel column. The upper surface of the part of the driving airbag extending into the inner side of the fixed plate is higher than the top end face of the lower steel column; an outward-turned edge is connected to the bottom end of the upper steel column, and the lower surface of the outward-turned edge is flush with the bottom end face of the upper steel column. The outward-turned edge is used to abut against the upper surface of the driving airbag extending into the inner side of the fixed plate.

[0023] By adopting the above technical solution, during the inflation process of the driving airbag, one side of the driving airbag passes through the receiving groove and extends into the inner side of the steel plate. The side surface of the driving airbag extending into the inner side of the steel plate abuts against the outer wall of the lower steel column, playing a role in pushing the steel plate outwards. The top surface is higher than the top end face of the lower steel column; the upper steel column is hoisted in, and the roller shaft plays a guiding role for the upper steel column. When the outward-turned edge at the bottom end of the upper steel column abuts against the driving airbag, the driving airbag is gradually deflated, so that the upper steel column is slowly lowered until the bottom surface of the upper steel column abuts against the top surface of the lower steel column. The driving airbag plays a buffering role for the upper steel column, reduces the hard collision intensity between the upper steel column and the lower steel column, and plays a protective role for the upper steel column and the lower steel column.

[0024] Preferably, a limiting plate for restricting the expansion direction of the driving airbag is fixedly arranged on the steel plate. The inner wall of the limiting plate is flush with the outer wall of the moving plate. When the driving airbag is in an inflated state, the limiting plate abuts against the outside of the driving airbag.

[0025] By adopting the above technical solution, the arrangement of the limiting plate restricts the expansion direction of the driving airbag, preventing the driving airbag from expanding away from the fixed plate and towards the moving plate to drive the moving plate to move.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Compared with the way of welding and fixing the positioning tooling in the related art, the connection method in the present application reduces the impact on the steel structure column itself, ensures the self-strength of the steel structure column, and this connection method facilitates the repeated use of the positioning device, reduces the waste of materials, and meets the requirements of energy conservation and environmental protection;

[0028] 2. By inflating the driving airbag to drive the moving plate, compared with rigid driving parts such as cylinders and electric cylinders, the driving airbag has a lighter mass, reduces the burden on the positioning device caused by the increase of the driving part, and reduces the wear on the outer wall of the lower steel column and the pressure on the ear plate;

[0029] 3. Hoist the upper steel column into it, and the roller shaft plays a guiding role for the upper steel column. When the turned-out edge at the bottom end of the upper steel column abuts against the driving airbag, gradually deflate the driving airbag to slowly lower the upper steel column until the bottom surface of the upper steel column abuts against the top surface of the lower steel column. The driving airbag plays a buffering role for the upper steel column, reduces the hard collision strength between the upper steel column and the lower steel column, and plays a protective role for the upper steel column and the lower steel column. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram showing the lower steel column, the upper steel column and the installation precision positioning device in Embodiment 1.

[0031] Figure 2 It is a schematic structural diagram showing the installation precision positioning device in Embodiment 1.

[0032] Figure 3 It is Figure 2 A partial enlarged schematic diagram of part A in

[0033] Figure 4 It is a schematic structural diagram showing the installation precision positioning device in Embodiment 2.

[0034] Figure 5 It is a schematic structural diagram showing the connection relationship between the driving airbag and the fixing plate in Embodiment 2 by hiding the limiting plate.

[0035] Description of the Reference Numerals:

[0036] 11. Lower steel column; 12. Upper steel column; 121. Flanged edge; 122. U-shaped plate; 13. Ear plate; 131. Connection hole; 2. Steel plate; 21. Side plate; 211. Relief groove; 22. Connecting plate; 221. Mounting plate; 3. Connection assembly; 31. Left connecting piece; 32. Right connecting piece; 33. Pin hole; 34. Connecting pin; 4. Tightening screw; 41. Lower sleeve; 42. Tightening plate; 43. Fitting long groove; 5. Adjusting screw; 51. Upper sleeve; 52. Guide assembly; 521. Connecting plate; 522. Roller; 6. Telescopic plate; 7. Scale; 81. Fixed plate; 811. Slide groove; 812. Accommodating groove; 813. Limiting plate; 8131. Long plate; 8132. Short plate; 82. Moving plate; 821. Slide bar; 9. Driving airbag; 91. Extension piece. Detailed implementation mode

[0037] The following is further described in detail with reference to the attached Figures 1-5 This application is further described in detail.

[0038] The embodiment of this application discloses a precise positioning device for the installation of a steel structure column.

[0039] Embodiment 1

[0040] Refer to Figure 1 , a precise positioning device for the installation of a steel structure column, includes a connection mechanism for connecting with the lower steel column 11 and a guiding mechanism for guiding the upper steel column 12.

[0041] The connection mechanism includes two groups of symmetrically arranged U-shaped steel plates 2. The openings of the two groups of U-shaped steel plates 2 face each other, and the two groups of steel plates 2 together form an outer plate. The steel structure column is set as a rectangular column body, and ear plates 13 are respectively fixed on the four outer walls of the steel structure column. Connection holes 131 are opened on the ear plates 13. The two groups of steel plates 2 are respectively located on both sides of the steel structure column, and the bottom ends of the steel plates 2 are placed on the ear plates 13. The steel plate 2 includes two side plates 21 and a connecting plate 22 fixed between the two side plates 21.

[0042] Combined with Figure 2 and Figure 3A connecting assembly 3 for connecting the two sets of steel plates 2 is provided between the two sets of steel plates 2. The connecting assembly 3 includes a left connecting piece 31 fixed to the outer wall of one of the side plates 21 and a right connecting piece 32 fixed to the outer wall of the other side plate 21. Two right connecting pieces 32 are provided at intervals from top to bottom. Pin holes 33 are provided on both the left connecting piece 31 and the right connecting piece 32. A clearance groove 211 for making way for the left connecting piece 31 is provided on the side plate 21 provided with the right connecting piece 32. The clearance groove 211 is located between the two right connecting pieces 32. When the two sets of steel plates 2 are connected, the side plate 21 provided with the right connecting piece 32 is located outside the side plate 21 provided with the left connecting piece 31. The left connecting piece 31 penetrates into the clearance groove 211 and is opposite to the right connecting piece 32 from top to bottom. A connecting pin 34 is provided in both the left connecting piece 31 and the right connecting piece 32 to limit the relative movement of the two sets of steel plates 2 in the horizontal direction and realize the connection of the two sets of steel plates 2.

[0043] Combination Figure 1 and Figure 2 The connection mechanism also includes a plurality of abutting screws 4 connected to the steel plate 2. The abutting screws 4 correspond to the side plates 21 and the connecting plates 22 one by one, and the abutting screws 4 are perpendicular to the plate body connected thereto. In order to increase the stability of the connection between the abutting screws 4 and the steel plate 2, a lower sleeve 41 is fixedly provided on the steel plate 2, and the abutting screws 4 are provided in the lower sleeve 41 and are threadedly connected to the lower sleeve 41. A abutting plate 42 for abutting against the outer wall of the lower steel column 11 is fixed to one end of the abutting screws 4 located on the inner side of the steel plate 2, and a rotating handle for easy rotation by the staff is fixed to one end of the abutting screws 4 located on the outer side of the steel plate 2.

[0044] The guide mechanism includes a plurality of adjusting screws 5 connected to the steel plate 2. The adjusting screws 5 correspond to the side plates 21 one by one. Two adjusting screws 5 are arranged at intervals on the connecting plate 22. The adjusting screws 5 are perpendicular to the plate body connected thereto. An upper sleeve 51 is fixedly provided on the steel plate 2. The adjusting screws 5 are provided in the upper sleeve 51 and are threadedly connected to the upper sleeve 51. The end of the adjusting screw 5 located on the inner side of the steel plate 2 is connected to a guide assembly 52 for guiding the lowering of the upper steel column 12. The end of the adjusting screw 5 located on the outer side of the steel plate 2 is fixed to a rotating handle for easy rotation by the staff.

[0045] The guide assembly 52 includes a connecting plate 521 rotatably connected to the adjusting screw 5, the rotating shaft between the connecting plate 521 and the adjusting screw 5 is coaxial with the adjusting screw 5, and the side of the connecting plate 521 facing away from the adjusting screw 5 is rotatably connected to a roller shaft 522, the axial direction of the roller shaft 522 is horizontally arranged and perpendicular to the axial direction of the adjusting screw 5, and the roller shaft 522 is used to abut against the outer wall of the upper steel column 12.

[0046] A telescopic plate 6 is arranged between the guiding assembly 52 and the steel plate 2. The telescopic direction of the telescopic plate 6 is set parallel to the axial direction of the adjusting screw 5. One end of the telescopic plate 6 is fixed to the connecting plate 521, and the other end of the telescopic plate 6 is fixed to the steel plate 2. During the movement of the guiding assembly 52 along with the adjusting screw 5, the telescopic plate 6 plays a limiting role on the guiding assembly 52, restricting the rotation of the guiding assembly 52, keeping the axis of the roller 522 horizontal, and guiding the lowering of the upper steel column 12.

[0047] Scales 7 are arranged on both the tightening screw 4 and the adjusting screw 5. Now, taking the tightening screw 4 as an example, the specific connection relationship between the scale 7 and the tightening screw 4 will be described.

[0048] A fitting long groove 43 is formed on the tightening screw 4. The fitting long groove 43 is arranged parallel to the axial direction of the tightening screw 4 and penetrates through both ends of the tightening screw 4. The scale 7 is fixed in the fitting long groove 43 by screws. When the tightening screw 4 is in the initial position, the 0 scale of the scale 7 is aligned with the outer edge of the lower sleeve 41.

[0049] When the tightening screw 4 and the adjusting screw 5 are in the initial position, the inner walls of the tightening plates 42 on the same side and the inner edges of the rollers 522 are located in the same vertical plane.

[0050] The implementation principle of a precise positioning device for steel structure column installation in an embodiment of the present application is as follows:

[0051] Place the left and right groups of steel plates 2 on the ear plates 13 of the lower steel column 11, and insert the connecting pin 34 into the pin hole 33 to realize the connection of the two groups of steel plates 2; adjust the tightening screw 4 so that the tightening plate 42 abuts against the outer wall of the lower steel column 11, and adjust all the tightening screws 4 to make the connection mechanism tightly abut against the lower steel column 11 around, realizing the connection between the connection mechanism and the lower steel column 11; precisely adjust the adjusting bolt through the scale 7 to make the inner side of the roller 522 flush with the inner wall of the tightening plate 42; hoist the upper steel column 12 into it. The roller 522 plays a guiding role on the upper steel column 12, making the upper steel column 12 accurately aligned with the lower steel column 11. At the same time, the friction between the upper steel column 12 and the guiding mechanism during the downward movement of the upper steel column 12 is reduced, facilitating the downward movement of the upper steel column 12 and improving the installation and positioning efficiency.

[0052] Embodiment Two

[0053] Combined with Figure 4 and Figure 5 A precise positioning device for steel structure column installation, which is different from Embodiment One in that an inverted U-shaped mounting plate 221 is fixed to the lower surface of the connecting plate 22 in the steel plate 2. The mounting plate 221 is clamped on the ear plate 13 of the lower steel column 11, and through the cooperation of the bolt-nut group and the connection hole 131 on the ear plate 13, the preliminary connection between the steel plate 2 and the lower steel column 11 is realized.

[0054] The side plate 21 of the steel plate 2 is configured as a retractable plate body, and the steel plate 2 includes a fixed plate 81 fixed to the connecting plate 22 and a movable plate 82 slidably connected to the side of the fixed plate 81 away from the connecting plate 22, and the movable plate 82 is located on the outside of the fixed plate 81, and the connection structure between the two movable plates 82 is the same as the connection structure between the two side plates 21 in Example 1.

[0055] The fixed plate 81 is provided with slide grooves 811 spaced apart from each other, the cross-section of the slide grooves 811 is a trapezoid, and the slide grooves 811 penetrate the fixed plate 81 on one side close to the movable plate 82; a slide bar 821 adapted to the slide grooves 811 is fixed on the movable plate 82, and the slide bar 821 is slidably connected in the slide grooves 811. In order to reduce the friction between the slide bar 821 and the slide grooves 811, a plurality of balls are provided between the slide grooves 811 and the slide bar 821, and the balls are not shown in the drawings.

[0056] The fixed plate 81 is provided with a driving airbag 9 for driving the moving plate 82 to move, and an inflation port is provided on the driving airbag 9. One end of the driving airbag 9 along the extension direction of the side plate 21 is fixed to the outer wall of the fixed plate 81, and the other end of the driving airbag 9 is adhesively fixed to the side of the moving plate 82 close to the fixed plate 81. A plurality of extension pieces 91 are fixed to one side of the driving airbag 9, and the extension pieces 91 are fixed to the outside of the fixed plate 81 to achieve the connection between the driving airbag 9 and the fixed plate 81.

[0057] In order to limit the expansion direction of the driving airbag 9, a limit plate 813 in an L shape is also connected to the steel plate 2. The limit plate 813 includes an integrally formed short plate 8132 and a long plate 8131. The short plate 8132 is fixed to the connecting plate 22, the long plate 8131 is parallel to the side plate 21, and the end of the long plate 8131 facing away from the short plate 8132 is attached to the outer wall of the movable plate 82, and the inner wall of the long plate 8131 is flush with the outer wall of the movable plate 82. When the driving airbag 9 is in an expanded state, the inner wall of the long plate 8131 abuts against the outer side of the driving airbag 9.

[0058] A rectangular receiving groove 812 is also provided on the fixing plate 81. The receiving groove 812 is a through groove. When the driving airbag 9 is in an expanded state, one end of the driving airbag 9 can pass through the receiving groove 812 and extend into the inner side of the fixing plate 81. The driving airbag 9 passing through the receiving groove 812 abuts against the outer wall of the lower steel column 11, and the upper surface of the driving airbag 9 passing through the receiving groove 812 is higher than the top end surface of the lower steel column 11.

[0059] A rounded corner is provided at the bottom end of the movable plate 82 on the side facing away from the fixed plate 81 . The rounded corner facilitates the fixed plate 81 to move to above the ear plate 13 of the lower steel plate 2 .

[0060] An outward-turned edge 121 is fixedly provided on the outer wall of the bottom end of the upper steel column 12. The outward-turned edges 121 correspond to the driving air bags 9 one by one. The bottom surface of the outward-turned edge 121 is flush with the bottom end face of the upper steel column 12. The outward-turned edge 121 is used to abut against the part of the driving air bag 9 extending into the inner side of the fixing plate 81. In this embodiment, two adjacent outward-turned edges 121 are fixed to the upper steel column 12 through the same U-shaped plate 122. The inner wall of the U-shaped plate 122 contacts the outer wall of the upper steel column 12. Compression bolts are respectively threadedly connected to both sides of the U-shaped plate 122. The compression bolts abut against the outer wall of the upper steel column 12 to connect the U-shaped plate 122 and the upper steel column 12. In other embodiments, the outward-turned edge 121 can be fixed to the upper steel column 12 by welding.

[0061] The implementation principle of the above embodiment is as follows:

[0062] First, place the left and right groups of steel plates 2 on the ear plates 13 of the lower steel column 11, and realize the preliminary connection between the steel plates 2 and the lower steel column 11 through the cooperation of the bolt-nut group and the connection holes 131 on the ear plates 13. Inflate the driving air bag 9 through the inflation port of the driving air bag 9. During the inflation process of the driving air bag 9, drive the moving plate 82 to move away from the fixing plate 81 until the extension pieces 91 and the right connection pieces 32 on the two moving plates 82 are vertically aligned. Stop inflating the driving air bag 9, and connect two adjacent fixing plates 81 through the connecting pin 34. During the inflation process of the driving air bag 9, one side of the driving air bag 9 passes through the accommodating groove 812 and extends into the inner side of the steel plate 2. The side surface of the driving air bag 9 extending into the inner side of the steel plate 2 abuts against the outer wall of the lower steel column 11, playing a role of pushing the steel plate 2 outwards and having a top surface higher than the top end face of the lower steel column 11. Adjust the tightening screw 4 so that the tightening plate 42 abuts against the outer wall of the lower steel column 11, and adjust the adjusting screw 5 so that the inner side of the roller 522 is flush with the inner wall of the tightening plate 42. Lift the upper steel column 12 into it. The roller 522 plays a guiding role for the upper steel column 12. When the outward-turned edge 121 at the bottom end of the upper steel column 12 abuts against the driving air bag 9, gradually deflate the driving air bag 9 to slowly lower the upper steel column 12 until the bottom surface of the upper steel column 12 abuts against the top surface of the lower steel column 11. The driving air bag 9 plays a buffering role for the upper steel column 12, reducing the hard collision intensity between the upper steel column 12 and the lower steel column 11, and playing a protective role for the upper steel column 12 and the lower steel column 11.

[0063] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A precise positioning device for the installation of a steel structure column, characterized in that: It includes an outer peripheral plate sleeved outside the lower steel column (11). There is a distance between the inner wall of the outer peripheral plate and the outer wall of the lower steel column (11). A plurality of tightening screws (4) are threadedly connected to the outer peripheral plate along its circumference. One end of the tightening screw (4) close to the lower steel column (11) is fixed with a tightening plate (42). The tightening screw (4) is used to drive the tightening plate (42) to abut against the outer wall of the lower steel column (11). A plurality of roller shafts (522) are arranged along the circumference of the outer peripheral plate. The inner edge of the roller shaft (522) is flush with the outer wall of the lower steel column (11). The roller shaft (522) is used to contact the outer wall of the upper steel column (12). An ear plate (13) is fixedly arranged on the outer wall of the lower steel column (11). The outer peripheral plate is placed on the ear plate (13). The outer peripheral plate includes two groups of symmetrically arranged steel plates (2). The two groups of steel plates (2) are connected by connecting pins (34). The outer peripheral plate includes two spaced side plates (21) and a connecting plate (22) connected between the two side plates (21). The side plate (21) includes a fixed plate (81) fixed to the connecting plate (22) and a moving plate (82) slidably connected to the outside of the fixed plate (81). A driving member for driving the moving plate (82) to move is arranged on the fixed plate (81). The driving member is set as a driving airbag (9). One end of the driving airbag (9) is fixedly arranged on the fixed plate (81). The other end of the driving airbag (9) is connected to the side of the moving plate (82) close to the fixed plate (81). By inflating the driving airbag (9), the moving plate (82) can move away from the fixed plate (81) under the action of the driving airbag (9).

2. The precise positioning device for the installation of a steel structure column according to claim 1, characterized in that: Adjusting screws (5) corresponding to the roller shafts (522) one by one are threadedly connected to the outer peripheral plate. The roller shaft (522) is connected to one end of the adjusting screw (5) close to the upper steel column (12). Scale marks (7) are arranged on both the tightening screw (4) and the adjusting screw (5).

3. The precise positioning device for the installation of a steel structure column according to claim 2, characterized in that: The axis direction of the roller shaft (522) is horizontal. The roller shaft (522) is rotatably connected to the adjusting screw (5) through a connecting plate (521). A limiting member for keeping the axis of the roller shaft (522) horizontal is arranged on the outer peripheral plate.

4. The precise positioning device for steel structure column installation according to claim 3, characterized in that: The limiting member is set as a telescopic plate (6). One end of the telescopic plate (6) is connected to the outer peripheral plate, and the other end of the telescopic plate (6) is connected to the connecting plate (521).

5. The precise positioning device for steel structure column installation according to claim 1, wherein: The driving airbag (9) is located outside the fixing plate (81). A receiving groove (812) is formed in the fixing plate (81). When the driving airbag (9) is in an inflated state, one side of the driving airbag (9) extends into the inner side of the fixing plate (81) through the receiving groove (812) and abuts against the outer wall of the lower steel column (11). The upper surface of the part of the driving airbag (9) extending into the inner side of the fixing plate (81) is higher than the top end face of the lower steel column (11). A flanging (121) is connected to the bottom end of the upper steel column (12). The lower surface of the flanging (121) is flush with the bottom end face of the upper steel column (12). The flanging (121) is used to abut against the upper surface of the driving airbag (9) extending into the inner side of the fixing plate (81).

6. The precise positioning device for the installation of a steel structure column according to claim 1, characterized in that: A limiting plate (813) for restricting the expansion direction of the driving airbag (9) is fixedly provided on the steel plate (2). The inner wall of the limiting plate (813) is flush with the outer wall of the moving plate (82). When the driving airbag (9) is in an inflated state, the limiting plate (813) abuts against the outside of the driving airbag (9).

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