A mounting positioning structure for a steel column and a steel column mounting positioning method

Abstract

The application provides a mounting positioning structure for a steel column, which comprises a pre-buried bolt positioning device, an upper positioning unit, a lower positioning unit and a connecting assembly; the pre-buried bolt positioning device comprises a ring-shaped positioning plate, a plurality of positioning holes are formed in the ring-shaped positioning plate, a drag hook and two pairs of steel wire positioning holes are arranged on the lower part of the ring-shaped positioning plate; the upper positioning unit and the lower positioning unit each comprise a ring-shaped base, a driving bevel gear, a driven bevel gear, a screw rod and a plurality of sliding blocks; the driven bevel gear is engaged with the driving bevel gear on one side, and is provided with a ring-shaped screw thread on the other side, which is engaged with the screw thread of the bottom of the sliding blocks; the rotation of the screw rod drives the sliding blocks to synchronously slide along the radial direction; the upper and lower positioning units are connected through telescopic steel pipes and are relatively independent; the application does not need to be welded on site, has high positioning precision, high efficiency and simple operation, and is suitable for the on-site installation and positioning of various steel columns.

Description

Technical Field

[0001] This invention relates to the field of steel structure installation technology, and in particular to an installation and positioning structure and method for steel columns. Background Technology

[0002] Steel structural components have the advantages of light weight and high load-bearing capacity, enabling large-span spatial designs and significantly enhancing the functionality and aesthetics of buildings. Due to their superior performance, durability, and efficient industrial production characteristics, steel structures are widely used in modern architecture, especially in industrial plants, large-span public buildings, and high-rise buildings.

[0003] As the core vertical load-bearing components of a steel structure system, the installation quality of steel columns directly affects the stability and safety of the overall structure. On-site installation of steel columns must ensure accurate positioning, verticality meeting design requirements, and reliable connections; otherwise, it will affect the installation accuracy of subsequent beams, slabs, and other components, and may even pose a serious threat to the safety of the overall structure. Therefore, steel column installation is a critical process in steel structure engineering construction, and the control of its accuracy and efficiency is of paramount importance.

[0004] However, in actual on-site installation, traditional steel column installation and positioning methods have many shortcomings: Firstly, in terms of positioning pre-embedded bolts, traditional methods often rely on manual measurement, which is inefficient and lacks precision. While some existing technologies employ positioning plates for pre-embedded bolt positioning, such as the positioning device for pre-embedded bolts in steel columns of a wharf platform disclosed in Chinese patent CN219794229U, which includes a frame bracket and a positioning plate with positioning holes, these solutions typically use square frame structures for the positioning plate, lacking a ring-shaped design; they also lack hook structures for connecting to the reinforcing bars to prevent displacement during pouring; and they lack two pairs of positioning holes for quickly aligning the center, leaving considerable room for improvement in positioning speed and accuracy.

[0005] Secondly, in terms of positioning the upper and lower steel columns, traditional methods often use welded vertical steel plates as limiting devices, which are not ideal in terms of efficiency and positioning effect. Welding steel plates as limiting devices involves on-site welding, which may not guarantee welding quality, and manual welding can lead to deviations in the position of the limiting device, making subsequent precise positioning of the steel column difficult. While there are existing solutions for steel column positioning using mechanical methods, such as the steel structure installation positioning device disclosed in Chinese Patent CN212984675U, which uses bevel gear transmission to move the clamping plate, it is a general-purpose steel structure installation positioning device and is not specifically designed for positioning the pre-embedded bolts of the steel column, nor does it use a ring base and a radially sliding slider structure. A steel structure assembly positioning device disclosed in Chinese Patent CN222344599U uses a linear bidirectional clamping method, rather than radial synchronous sliding clamping on a ring base. A precise positioning device for steel structure column installation disclosed in Chinese Patent CN115162751A uses a manual adjustment method with tightening screws, resulting in low positioning accuracy and efficiency.

[0006] In addition, in existing technologies, the positioning of pre-embedded bolts and the positioning of the upper and lower steel columns are usually completed by two separate devices, which lacks systematic integration and increases the complexity of construction and equipment costs. Summary of the Invention

[0007] This invention provides an installation and positioning structure and method for steel columns, which can effectively solve the above-mentioned problems.

[0008] This invention is implemented as follows: An installation and positioning structure for steel columns, comprising: An embedded bolt positioning device includes an annular positioning plate with multiple positioning holes corresponding to the diameter of the embedded bolts in the steel column. The lower part of the annular positioning plate has multiple far-away hooks for connecting to the reinforcing bars in the steel column foundation. The lower part of the annular positioning plate also has at least two pairs of wire-threading positioning holes, with the lines connecting the two pairs of holes perpendicular to each other. These holes are used to thread steel wires to locate the center point of the steel column. The upper positioning unit includes a first annular base, a first bevel gear set, a first lead screw, and a plurality of first sliders. The plurality of first sliders are slidably mounted on the first annular base. A first annular thread is provided on one side of the first bevel gear set, and a first thread that mates with the first annular thread is provided on the bottom of each first slider. The first bevel gear set is connected to the first lead screw. Rotating the first lead screw drives the first bevel gear set to rotate, and the first bevel gear set drives each first slider to slide synchronously along the radial direction of the first annular base through the engagement of the first annular thread with each of the first threads. The lower positioning unit includes a second annular base, a second bevel gear set, a second lead screw, and a plurality of second sliders. The plurality of second sliders are slidably mounted on the second annular base. A second annular thread is provided on one side of the second bevel gear set, and a second thread engaging with the second annular thread is provided on the bottom of each second slider. The second bevel gear set is connected to the second lead screw. Rotating the second lead screw drives the second bevel gear set to rotate, and the second bevel gear set, through the engagement of the second annular thread with each of the second threads, drives each second slider to slide synchronously along the radial direction of the second annular base. A connecting component is provided, which connects the upper positioning unit and the lower positioning unit. The upper positioning unit and the lower positioning unit are connected as one unit through the connecting component and are relatively independent, and each slider can slide independently.

[0009] As a further improvement, the first bevel gear set includes a first driving bevel gear and a first driven bevel gear. One side of the first driven bevel gear meshes with the first driving bevel gear, and the other side of the first driven bevel gear is provided with the first annular thread. The first driving bevel gear is connected to the first lead screw. Rotating the first lead screw drives the first driving bevel gear to rotate, and the first driving bevel gear drives the first driven bevel gear to rotate. The first driven bevel gear drives each of the first sliders to slide synchronously along the radial direction of the first annular base through the engagement of the first annular thread with each of the first threads. The second bevel gear set includes a second driving bevel gear and a second driven bevel gear. One side of the second driven bevel gear meshes with the second driving bevel gear, and the other side of the second driven bevel gear is provided with the second annular thread. The second driving bevel gear is connected to the second lead screw. Rotating the second lead screw drives the second driving bevel gear to rotate, and the second driving bevel gear drives the second driven bevel gear to rotate. The second driven bevel gear drives each second slider to slide synchronously along the radial direction of the second annular base through the engagement of the second annular thread with each of the second threads.

[0010] As a further improvement, the first annular base is provided with a plurality of first radial guide grooves, and the first slider is slidably mounted on each of the first radial guide grooves; the second annular base is provided with a plurality of second radial guide grooves, and the second slider is slidably mounted on each of the second radial guide grooves.

[0011] As a further improvement, the first driving bevel gear, the first driven bevel gear, the first lead screw, and the first slider are all encapsulated within the first housing; the second driving bevel gear, the second driven bevel gear, the second lead screw, and the second slider are all encapsulated within the second housing.

[0012] As a further improvement, the connecting assembly includes several telescopic steel pipes, each of which includes an outer pipe and an inner pipe. The inner pipe is slidably sleeved inside the outer pipe, and a height fixing member is provided between the outer pipe and the inner pipe.

[0013] As a further improvement, the height fixing component is set as a first bolt, and a bolt hole is opened on the outer tube. The first bolt passes through the bolt hole and abuts against the outer wall of the inner tube to fix the height of the telescopic steel pipe.

[0014] As a further improvement, the thickness of the annular positioning plate is set to 4~6mm; the outer diameter of the first annular base and the second annular base is set to 0.7m~1.5m, and the inner diameter is set to 0.5m~1.3m; the diameter of the first driving bevel gear and the second driving bevel gear is set to 3~7cm, and the outer diameter of the first driven bevel gear and the second driven bevel gear is set to 80cm~106cm, and the inner diameter is set to 72cm~94cm.

[0015] As a further improvement, the inner and outer diameters of the annular positioning plate are determined according to the dimensions of the embedded bolts in the steel column.

[0016] A method for installing and positioning a steel column using the aforementioned installation and positioning structure for steel columns includes the following steps: S1, Pre-embedded bolt positioning: Pass steel wires through the two pairs of positioning holes of the pre-embedded bolt positioning device, so that the steel wires intersect at the center point of the annular positioning plate to form a cross; release the center point of the steel column foundation, and align the intersection of the steel wires with the center point of the steel column foundation to determine the position of the pre-embedded bolt; connect the hook to the reinforcing steel in the steel column foundation to prevent displacement during pouring; pass the anchor bolts through the positioning holes to fix the position of the pre-embedded bolts; S2, Lower positioning unit installation: The lower positioning unit is fitted into the lower steel column, and the second lead screw of the lower positioning unit is rotated. The second driven bevel gear is driven to rotate through the second active bevel gear. The second driven bevel gear drives each second slider to slide synchronously in the radial direction through the second annular thread, so that each second slider clamps the lower steel column. S3, Upper positioning unit preparation: Open the first slider of the upper positioning unit to prepare for the installation of the upper steel column; S4, Steel column docking: Hoist the upper steel column, put the upper steel column into the upper positioning unit and place it on the lower steel column, rotate the first lead screw of the upper positioning unit, drive the first driven bevel gear to rotate through the first active bevel gear, and drive each first slider to slide synchronously in the radial direction through the first annular thread, gradually aligning the center point of the upper steel column with the center point of the lower steel column to achieve precise docking; S5, Fixed Connection: After the upper steel column and the lower steel column are precisely aligned, the upper steel column and the lower steel column are fixedly connected by a connecting plate.

[0017] As a further improvement, in step S2, when the lower positioning unit is fitted into the lower steel column, the second slider of the lower positioning unit avoids the ear plate of the lower steel column.

[0018] The beneficial effects of this invention are: 1) No on-site welding required, ensuring structural integrity: This installation and positioning structure adopts a completely mechanical connection method. The positioning of the pre-embedded bolts is achieved by aligning the ring positioning plate, hooks and steel wires. The connection between the upper and lower steel columns is achieved by the mechanical clamping of the upper and lower positioning units. The entire installation and positioning process does not require on-site welding. This can avoid problems such as unstable welding quality, welding deformation, and damage to the properties of the base material by the welding heat-affected zone in traditional methods, ensuring the structural integrity and mechanical properties of the steel column body.

[0019] 2) High positioning accuracy and reliable installation quality: The pre-embedded bolt positioning device achieves high-precision positioning of the pre-embedded bolts through a triple guarantee mechanism, namely, positioning plate positioning, hook holding the reinforcing bar to prevent displacement, and wire crossing to achieve accurate positioning; through the precision transmission mechanism of bevel gear set-lead screw-slider, the synchronous radial sliding of multiple sliders in the upper and lower positioning units is achieved, ensuring the precise alignment of the center point of the steel column. The positioning accuracy of this installation positioning structure is significantly improved.

[0020] 3) High installation efficiency and short construction cycle: By rotating the lead screw, the linkage of the driving bevel gear, driven bevel gear and slider can be driven to realize the synchronous radial sliding of multiple sliders, and the clamping and positioning of the steel column can be completed in one go; the operation steps of this installation and positioning structure and method are greatly simplified, the installation efficiency is significantly improved, and the construction cycle is effectively shortened.

[0021] 4) Simple operation, no special operation skills required: The structure of this installation and positioning structure is simple and the method of use is intuitive. Ordinary workers can master the operation method after simple training; no special operation skills such as welding are required, which reduces the technical level requirements of workers, reduces the cost of special operation personnel, and also reduces construction safety risks.

[0022] 5) High versatility and wide applicability: The upper and lower positioning units are connected by a telescopic steel pipe, and the height is adjustable; the slider can slide synchronously along the radial direction, which can adapt to steel columns with different cross-sectional dimensions; that is, this installation and positioning structure has good versatility and can be used for on-site installation and positioning of steel columns of different specifications, and has high promotion and application value.

[0023] 6) Systematic design, multi-purpose: The pre-embedded bolt positioning device and the upper and lower steel column docking positioning device are integrated into a unified positioning system to achieve precise positioning throughout the entire process from foundation pre-embedding to steel column docking; one set of devices can complete the two key processes of pre-embedded bolt positioning and upper and lower steel column docking positioning, reducing equipment investment and lowering construction costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the installation and positioning structure for steel columns according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the pre-embedded bolt positioning device according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the upper positioning unit and the lower positioning unit in an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the internal structure of the upper or lower positioning unit in an embodiment of the present invention.

[0029] In the picture: 1. Embedded bolt positioning device; 11. Annular positioning plate; 111. Positioning hole; 112. Hook; 113. Wire-threaded positioning hole; 2. Upper positioning unit; 21. First bevel gear set; 211. First driving bevel gear; 212. First driven bevel gear; 213. First annular thread; 22. First lead screw; 23. First annular base; 231. First radial guide groove; 24. First slider; 241. First thread; 25. First outer shell; 3. Lower positioning unit; 31. Second outer shell; 32. Second lead screw; 33. Second annular base; 34. Second slider; 4. Connecting components; 41. Outer tube; 42. Inner tube; 43. First bolt. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Reference Figures 1-4 As shown, an installation and positioning structure for steel columns includes a pre-embedded bolt positioning device 1, an upper positioning unit 2, a lower positioning unit 3, and a connecting component 4. The upper positioning unit 2 and the lower positioning unit 3 are connected by the connecting component 4.

[0033] like Figure 2 As shown, the pre-embedded bolt positioning device 1 includes an annular positioning plate 11, the thickness of which is set to 4-6 cm. In this embodiment, the annular positioning plate 11 serves as the main body of the pre-embedded bolt positioning device 1, and its thickness is set to 5 cm to ensure sufficient strength. The inner and outer diameters of the annular positioning plate 11 are determined according to the dimensions of the pre-embedded bolts in the steel column. Positioning holes 111 corresponding to the diameters of the pre-embedded bolts in the steel column are provided on the annular positioning plate 11, and the number and position of the positioning holes 111 correspond one-to-one with the bolt holes at the bottom of the steel column.

[0034] The lower part of the annular positioning plate 11 is provided with a hook 112, which is used to connect with the reinforcing bars in the steel column foundation. During the concrete pouring process, the hook 112 can connect the annular positioning plate 11 and the reinforcing bar cage into one unit, effectively preventing the embedded bolts from shifting due to concrete impact or vibration.

[0035] The lower part of the annular positioning plate 11 is also provided with at least two pairs of wire-threading positioning holes 113. In this embodiment, there are two pairs of wire-threading positioning holes 113, and the lines connecting the two pairs of wire-threading positioning holes 113 are perpendicular to each other, that is, they are arranged in a cross shape in the diameter direction of the annular positioning plate 11. During construction, the steel wires are passed through the two pairs of wire-threading positioning holes 113 respectively, and the two steel wires cross at the center point of the annular positioning plate 11 to form a cross line. After the center point of the steel column foundation is marked out, the position of the pre-embedded bolts can be accurately determined by quickly aligning the intersection of the steel wires with the center point of the steel column foundation.

[0036] like Figure 3 and Figure 4 As shown, the upper positioning unit 2 includes a first annular base 23, a first bevel gear set 21, a first lead screw 22, several sliders, and a first housing 25. Several first sliders 24 are slidably mounted on the first annular base 23. A first annular thread 213 is provided on one side of the first bevel gear set 21, and a first thread 241 that mates with the first annular thread 213 is provided on the bottom of each first slider 24. The first bevel gear set 21 is connected to the first lead screw 22. Specifically, the first bevel gear set 21 includes a first driving bevel gear 211 and a first driven bevel gear 212. The diameter of the first driving bevel gear 211 is set to 3-7 cm, and the outer diameter of the first driven bevel gear 212 is set to 80-106 cm, and the inner diameter is set to 72-94 cm.

[0037] Furthermore, the outer diameter of the first annular base 23 is set between 0.7m and 1.5m, and the inner diameter is set between 0.5m and 1.3m. The first annular base 23 is provided with a plurality of first radial guide grooves 231, and the first slider 24 is slidably mounted on each of the first radial guide grooves 231.

[0038] In this embodiment, the outer diameter of the first annular base 23 is set to 1m and the inner diameter is set to 0.8m. Three first radial guide grooves 231 are provided on the first annular base 23, and the three first radial guide grooves 231 are evenly distributed along the circumference of the first annular base 23, that is, arranged at intervals of 120°.

[0039] In this embodiment, three first sliders 24 are provided. The three first sliders 24 are slidably mounted on three first radial guide grooves 231 respectively. Each first slider 24 can slide freely along the corresponding first radial guide groove 231 in the radial direction of the first annular base 23.

[0040] In this embodiment, the diameter of the first driving bevel gear 211 is set to 5 cm. The outer diameter of the first driven bevel gear 212 is set to 96 cm and the inner diameter is set to 84 cm, forming a ring structure. A first bevel tooth is provided on one side (inner ring side) of the first driven bevel gear 212, which meshes with the first driving bevel gear 211. The first annular thread 213 is provided on the other side (outer ring side) of the first driven bevel gear 212.

[0041] The bottom of each of the three first sliders 24 is provided with a first thread 241 that mates with the first annular thread 213, and the first thread 241 and the first annular thread 213 mesh with each other.

[0042] The first driving bevel gear 211 is connected to the first lead screw 22. One end of the first lead screw 22 extends outside the first housing 25, making it easy for the operator to rotate.

[0043] The operator rotates the first lead screw 22, which drives the first driving bevel gear 211 to rotate. The first driving bevel gear 211 drives the first driven bevel gear 212, which meshes with it, to rotate. When the first driven bevel gear 212 rotates, the first annular thread 213 on its outer ring side drives the three first sliders 24 meshing with it to slide synchronously radially along their respective first radial guide grooves 231. Since the three first sliders 24 slide synchronously and are evenly distributed circumferentially, the three first sliders 24 can simultaneously retract inward to clamp the steel column, or simultaneously open outward to release the steel column. This synchronous transmission mechanism ensures that the steel column is always in the center position of the first annular base 23 during the positioning process.

[0044] The first driving bevel gear 211, the first driven bevel gear 212, the first lead screw 22, and the three first sliders 24 are all encapsulated within the first housing 25. The first housing 25 serves to protect the internal transmission mechanism and prevent dust accumulation.

[0045] like Figure 4As shown, the structure of the lower positioning unit 3 is exactly the same as that of the upper positioning unit 2. The lower positioning unit 3 includes a second annular base 33, a second bevel gear set, a second lead screw 32, and several second sliders 34. The second sliders 34 are slidably mounted on the second annular base 33. A second annular thread is provided on one side of the second bevel gear set, and a second thread that mates with the second annular thread is provided at the bottom of each second slider 34. The second bevel gear set is connected to the second lead screw 32. Specifically, the second bevel gear set includes a second driving bevel gear and a second driven bevel gear. More precisely, the second annular base 33, the second driving bevel gear, the second driven bevel gear, the second lead screw 32, and the second sliders 34 are structurally identical to the first annular base 23, the first driving bevel gear 211, the first driven bevel gear 212, the first lead screw 22, and the first slider 24, respectively. Therefore, the internal transmission principle of the lower positioning unit 3 is exactly the same as that of the upper positioning unit 2, and will not be described further here.

[0046] like Figure 3 and Figure 4 As shown, the upper positioning unit 2 and the lower positioning unit 3 are connected by a connecting component 4. In this embodiment, the connecting component 4 includes four retractable steel pipes, which are evenly distributed along the circumference of the annular base.

[0047] Specifically, each telescopic steel pipe includes an outer pipe 41 and an inner pipe 2. The inner pipe 2 is slidably sleeved inside the outer pipe 41, and the inner pipe 2 can slide axially inside the outer pipe 41, thereby realizing the length adjustment of the telescopic steel pipe.

[0048] Furthermore, bolt holes are provided on the outer tube 41, and the first bolt 43 passes through the bolt holes and abuts against the outer wall of the inner tube 2. After the telescopic steel pipe is adjusted to a suitable height, tightening the first bolt 43 can fix the height of the telescopic steel pipe.

[0049] The upper positioning unit 2 and the lower positioning unit 3 are connected as one unit by four telescopic steel pipes, but the upper positioning unit 2 and the lower positioning unit 3 are relatively independent. Each first slider 24 and each second slider 34 can slide independently without interfering with each other. This design allows the upper and lower steel columns to be positioned separately before docking, which greatly improves the flexibility of operation and positioning accuracy.

[0050] This embodiment provides a method for installing and positioning steel columns, using the aforementioned installation and positioning structure for steel columns. The method includes the following steps: S1, Pre-embedded bolt positioning: First, the steel wires are passed through the two pairs of wire positioning holes 113 of the pre-embedded bolt positioning device 1, so that the two steel wires cross at the center point of the annular positioning plate 11 to form a cross line.

[0051] Then, the center point of the steel column foundation can be marked out using surveying equipment such as a total station. By aligning the intersection of the steel wires with the center point of the steel column foundation, the position of the pre-embedded bolts can be quickly determined.

[0052] After determining the location, connect the hook 112 to the steel reinforcement in the steel column foundation. This can be done by binding or welding to prevent the embedded bolts from shifting during concrete pouring.

[0053] Finally, the anchor bolts are passed through the positioning holes 111 to complete the fixing of the pre-embedded bolt positions.

[0054] S2, Lower positioning unit 3 installation: Insert the lower positioning unit 3 into the lower steel column from the top. When inserting, ensure that the three second sliders 34 of the lower positioning unit 3 avoid the lugs of the lower steel column to prevent interference.

[0055] Rotating the second lead screw 32 of the lower positioning unit 3 drives the second driving bevel gear to rotate, which in turn drives the second driven bevel gear to rotate. The driven bevel gear, through its outer ring thread, drives the three second sliders 34 to slide synchronously radially along their respective second radial guide grooves, causing the three second sliders 34 to clamp the lower steel column simultaneously from three directions. Because the three second sliders 34 slide synchronously and are evenly distributed circumferentially, the lower steel column is automatically positioned at the center of the second annular base 33.

[0056] S3, Upper positioning unit 2 is ready: The first lead screw 22 of the upper positioning unit 2 is rotated in the opposite direction, causing the three first sliders 24 of the upper positioning unit 2 to open outwards simultaneously, preparing for the insertion of the upper steel column.

[0057] S4, Steel column connection: Use hoisting equipment to lift the upper steel column, insert it into the upper positioning unit 2, and place it on top of the lower steel column.

[0058] The first lead screw 22 of the upper positioning unit 2 rotates in the forward direction. The first lead screw 22 drives the first active bevel gear 211 to rotate. The first active bevel gear 211 drives the first driven bevel gear 212 to rotate. The first driven bevel gear 212 drives the three first sliders 24 to slide synchronously radially along their respective first radial guide grooves 231 through the first annular thread 213 on its outer ring side, so that the three first sliders 24 clamp the upper steel column simultaneously from three directions.

[0059] As the first slider 24 gradually tightens, the upper steel column is automatically guided to the center position of the first annular base 23. Since the lower positioning unit 3 has pre-positioned the lower steel column at the center position, and the upper positioning unit 2 and the lower positioning unit 3 are kept coaxial through the telescopic steel tube, the center point of the upper steel column and the center point of the lower steel column are automatically aligned, achieving precise docking.

[0060] S5, Fixed Connection: After the upper and lower steel columns are precisely aligned, they are fixedly connected using a connecting plate in a conventional manner, or by using high-strength bolts, thus completing the installation of the steel columns.

[0061] In another embodiment, this embodiment provides a supplementary explanation of the above-described steel column installation and positioning method.

[0062] In the S1 pre-embedded bolt positioning step, the number and position of the positioning holes 111 of the annular positioning plate 11 should be determined according to the bolt holes at the bottom of the steel column. For steel columns of different specifications, annular positioning plates 11 with different positioning hole arrangements 111 can be used to adapt to different pre-embedded bolt arrangement requirements.

[0063] During the installation of the lower positioning unit 3 in step S2, if the cross-sectional dimensions of the lower steel column are large or small, the radial positions of the three second sliders 34 can be adjusted to accommodate them. Since the three second sliders 34 can slide radially synchronously, the lower positioning unit 3 can accommodate steel columns with different cross-sectional dimensions within a certain range.

[0064] In the S4 steel column docking process, the synchronous tightening of the three first sliders 24 of the upper positioning unit 2 is also the process of automatic alignment of the upper steel column. Compared with the traditional method that requires repeated manual adjustments, the automatic alignment function of this installation positioning method greatly improves docking efficiency and accuracy.

[0065] The height of the telescopic steel pipe can be adjusted according to the docking position of the upper and lower steel columns. During adjustment, loosen the first bolt 43, slide the inner tube 2 inside the outer tube 41 to a suitable height, and then tighten the first bolt 43 to fix it.

[0066] No on-site welding is required during the entire installation and positioning process, completely avoiding problems such as unstable welding quality and welding deformation.

[0067] The installation and positioning system and method for steel columns provided by this invention are simple in construction, easy to produce, and convenient to use. They require no special skills such as welding, and the positioning is standardized and does not rely on visual inspection. This invention is applicable to the on-site installation and positioning of steel columns in various steel structure buildings, and is particularly suitable for steel structure projects such as high-rise buildings and large-span public buildings where high installation accuracy and efficiency are required. It has broad industrial practical value and promising prospects for widespread application.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An installation and positioning structure for steel columns, characterized in that, include: An embedded bolt positioning device (1) is provided, comprising an annular positioning plate (11), wherein the annular positioning plate (11) is provided with a plurality of positioning holes (111) corresponding to the diameter of the embedded bolts of the steel column; the lower part of the annular positioning plate (11) is provided with a plurality of far apart hooks (112), the hooks (112) being used to connect with the reinforcing bars in the steel column foundation; the lower part of the annular positioning plate (11) is also provided with at least two pairs of wire-threading positioning holes (113), the lines connecting the two pairs of wire-threading positioning holes (113) being perpendicular to each other, the wire-threading positioning holes (113) being used to thread steel wires to locate the center point of the steel column; The upper positioning unit (2) includes a first annular base (23), a first bevel gear set (21), a first lead screw (22), and a plurality of first sliders (24). The plurality of first sliders (24) are slidably mounted on the first annular base (23). A first annular thread (213) is provided on one side of the first bevel gear set (21). A first thread (241) that cooperates with the first annular thread (213) is provided at the bottom of each first slider (24). The first bevel gear set (21) is connected to the first lead screw (22). Rotating the first lead screw (22) drives the first bevel gear set (21) to rotate. The first bevel gear set (21) drives each first slider (24) to slide synchronously along the radial direction of the first annular base (23) through the cooperation of the first annular thread (213) and each first thread (241). The lower positioning unit (3) includes a second annular base (33), a second bevel gear set, a second lead screw (32), and a plurality of second sliders (34). The plurality of second sliders (34) are slidably mounted on the second annular base (33). A second annular thread is provided on one side of the second bevel gear set. A second thread that cooperates with the second annular thread is provided at the bottom of each second slider (34). The second bevel gear set is connected to the second lead screw (32). Rotating the second lead screw (32) drives the second bevel gear set to rotate. The second bevel gear set drives each second slider (34) to slide synchronously along the radial direction of the second annular base (33) through the cooperation of the second annular thread and each second thread. as well as The connecting component (4) is connected between the upper positioning unit (2) and the lower positioning unit (3). The upper positioning unit (2) and the lower positioning unit (3) are connected as one unit through the connecting component (4) and are relatively independent, and each slider can slide independently.

2. The installation and positioning structure for steel columns according to claim 1, characterized in that, The first bevel gear set (21) includes a first driving bevel gear (211) and a first driven bevel gear (212). One side of the first driven bevel gear (212) meshes with the first driving bevel gear (211), and the other side of the first driven bevel gear (212) is provided with the first annular thread (213). The first driving bevel gear (211) is connected to the first lead screw (22). Rotating the first lead screw (22) drives the first driving bevel gear (211) to rotate. The first driving bevel gear (211) drives the first driven bevel gear (212) to rotate. The first driven bevel gear (212) drives each first slider (24) to slide synchronously along the radial direction of the first annular base (23) through the cooperation of the first annular thread (213) and each of the first threads (241). The second bevel gear set includes a second driving bevel gear and a second driven bevel gear. One side of the second driven bevel gear meshes with the second driving bevel gear, and the other side of the second driven bevel gear is provided with the second annular thread. The second driving bevel gear is connected to the second lead screw (32). Rotating the second lead screw (32) drives the second driving bevel gear to rotate. The second driving bevel gear drives the second driven bevel gear to rotate. The second driven bevel gear drives each second slider (34) to slide synchronously along the radial direction of the second annular base (33) through the cooperation of the second annular thread and each of the second threads.

3. The installation and positioning structure for steel columns according to claim 1, characterized in that, The first annular base (23) is provided with a plurality of first radial guide grooves (231), and the first slider (24) is slidably installed on each of the first radial guide grooves (231); the second annular base (33) is provided with a plurality of second radial guide grooves, and the second slider (34) is slidably installed on each of the second radial guide grooves.

4. The installation and positioning structure for steel columns according to claim 2, characterized in that, The first driving bevel gear (211), the first driven bevel gear (212), the first lead screw (22), and the first slider (24) are all encapsulated in the first housing (25); the second driving bevel gear, the second driven bevel gear, the second lead screw (32), and the second slider (34) are all encapsulated in the second housing (31).

5. The installation and positioning structure for steel columns according to claim 1, characterized in that, The connecting component (4) includes several telescopic steel pipes, each of which includes an outer pipe (41) and an inner pipe (42). The inner pipe (42) is slidably sleeved inside the outer pipe (41), and a height fixing member is provided between the outer pipe (41) and the inner pipe (42).

6. The installation and positioning structure for steel columns according to claim 5, characterized in that, The height fixing component is a first bolt (43). The outer tube (41) has a bolt hole. The first bolt (43) passes through the bolt hole and abuts against the outer wall of the inner tube (42) to fix the height of the telescopic steel pipe.

7. The installation and positioning structure for steel columns according to claim 2, characterized in that, The thickness of the annular positioning plate (11) is set to 4~6mm; the outer diameter of the first annular base (23) and the second annular base (33) is set to 0.7m~1.5m and the inner diameter is set to 0.5m~1.3m; the diameter of the first driving bevel gear (211) and the second driving bevel gear is set to 3~7cm, and the outer diameter of the first driven bevel gear (212) and the second driven bevel gear is set to 80cm~106cm and the inner diameter is set to 72cm~94cm.

8. The installation and positioning structure for steel columns according to claim 1, characterized in that, The inner and outer diameters of the annular positioning plate (11) are determined according to the dimensions of the embedded bolts in the steel column.

9. A method for installing and positioning a steel column using the installation and positioning structure for steel columns as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1, Pre-embedded bolt positioning: Pass the steel wires through the two pairs of positioning holes (113) of the pre-embedded bolt positioning device (1) so that the steel wires cross at the center point of the annular positioning plate (11) to form a cross line; Release the center point of the steel column foundation and use the steel wire intersection point to align with the center point of the steel column foundation to determine the position of the pre-embedded bolt; Connect the hook (112) to the steel reinforcement in the steel column foundation to prevent displacement during pouring; Pass the anchor bolts through the positioning holes (111) to fix the position of the pre-embedded bolts; S2, Lower positioning unit installation: The lower positioning unit (3) is inserted into the lower steel column, and the second lead screw (32) of the lower positioning unit (3) is rotated. The second driven bevel gear is driven to rotate through the second active bevel gear. The second driven bevel gear drives each second slider (34) to slide synchronously in the radial direction through the second annular thread, so that each second slider (34) clamps the lower steel column. S3, upper positioning unit preparation: open the first slider (24) of the upper positioning unit (2) to prepare for the installation of the upper steel column; S4, Steel column docking: hoist the upper steel column, put the upper steel column into the upper positioning unit (2) and place it on the lower steel column, rotate the first lead screw (22) of the upper positioning unit (2), drive the first driven bevel gear (212) to rotate through the first active bevel gear (211), and drive each first slider (24) to slide synchronously in the radial direction through the first annular thread (23), gradually aligning the center point of the upper steel column with the center point of the lower steel column to achieve precise docking; S5, Fixed Connection: After the upper steel column and the lower steel column are precisely aligned, the upper steel column and the lower steel column are fixedly connected by a connecting plate.

10. The steel column installation and positioning method according to claim 9, characterized in that, In step S2, when the lower positioning unit (3) is fitted into the lower steel column, the second slider of the lower positioning unit (3) is made to avoid the ear plate of the lower steel column.

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