Coaxiality correction device for circular steel pipe column

Abstract

A circular steel pipe column coaxiality correction device is provided with an upper explorator, a lower explorator and two mold combination bolts. And a group of bolt holes are symmetrically formed in the left and right sides of the upper and lower explorators respectively. The upper explorator and the lower explorator are connected to form the arc-shaped clamp through the bolt holes by the aid of the die combination bolts. The radius of the inner cambered surface of the upper profiling arc-shaped plate is equal to that of the inner cambered surface of the lower profiling arc-shaped plate, and the vertical cambered surfaces of the upper profiling arc-shaped plate and the lower profiling arc-shaped plate are located on the same vertical projection arc and abut against the outer surface of the circular steel pipe column. After the arc-shaped clamp is connected with the basic steel pipe through the clamp bolt, the butt-joint steel pipe is in butt joint with the arc-shaped clamp in cooperation with hoisting equipment, and the butt-joint steel pipe is connected with the arc-shaped clamp through the clamp bolt. During connection, the concentricity of the butt-joint steel pipe and the basic steel pipe can be corrected through the pulling force of the clamp bolt and the arc-shaped clamp on the butt-joint steel pipe. According to the utility model, the problems of complex process, large labor amount, low construction speed and high cost in the traditional steel column coaxiality correction process are solved. The device is simple to operate, accurate in correction, high in speed, reusable and low in cost.

Description

Technical Field

[0001] This utility model relates to a steel column correction device for building structures, and in particular to a coaxiality correction device for a round steel pipe column before butt welding of two sections of round steel pipe. Background Technology

[0002] In high-rise and super high-rise buildings, structural steel columns are key components of the building structure. These columns are constructed by welding together sections of circular steel tubes. Welding these circular steel tubes into columns requires strict control over verticality and coaxiality. The traditional construction method for welding these structural steel columns to ensure quality is as follows: After the foundation steel column is erected, the upper circular steel tube to be joined is hoisted directly above the foundation column and temporarily secured by guy ropes. Then, jacks, hand-operated hoists, and other tools are used, along with a theodolite, to calibrate the coaxiality of the two sections. Welding is only performed after the coaxiality and concentricity meet the requirements. When using jacks for calibration, a support frame must be erected. Erecting this frame is time-consuming, labor-intensive, and material-intensive. The traditional butt welding process for the upper and lower sections of circular steel tubes involves complex pre-weld coaxiality calibration, is time-consuming, labor-intensive, slow, and costly.

[0003] The purpose of this invention is to overcome the drawback of the complex coaxiality correction operation during the welding of round steel pipes into steel columns, and to provide a coaxiality correction device for round steel pipe columns that is simple in structure, easy to operate, fast in coaxiality correction, efficient in construction, recyclable, and can reduce construction costs. Utility Model Content

[0004] The purpose of this utility model can be achieved. This utility model's coaxiality correction device for round steel pipe columns includes a foundation steel pipe that has been erected and meets standards, and left and right vertical lifting plates with bolt holes welded on top; a connecting steel pipe and left and right vertical lifting plates with bolt holes welded on top (the vertical lifting plates meet various design requirements such as verticality). The feature of this utility model's coaxiality correction device for round steel pipe columns is that it is equipped with an upper mold, a lower mold, and two mold connecting bolts. The upper mold and the lower mold are symmetrically provided with a set of bolt holes on each side. The upper mold and the lower mold are symmetrically connected vertically through the left and right bolt holes and the two mold connecting bolts to form an arc-shaped clamp.

[0005] This utility model relates to a coaxiality correction device for round steel pipe columns. The upper template includes an upper arc-shaped plate, the inner radius of which is equal to the outer radius of the connecting steel pipe. A left bolt hole is located on the left side of the upper arc-shaped plate, away from the center, and a right bolt hole is located on the right side, also away from the center. The left and right bolt holes are symmetrically arranged. A connecting plate with bolt holes is symmetrically welded vertically to each end of the lower part of the upper arc-shaped plate. An inverted T-shaped component is symmetrically arranged between the two connecting plates. The left end of the left inverted T-shaped component forms the left top plate of a jack, and the right end forms a left bolt mounting plate with a left bolt hole. The right end of the right inverted T-shaped component forms the right top plate of a jack, and the left end forms a right bolt mounting plate with a right bolt hole. The vertical axis of the left bolt hole in the upper arc-shaped plate is coaxial with the vertical axis of the left bolt hole in the inverted T-shaped component, and the vertical axis of the right bolt hole in the upper arc-shaped plate is coaxial with the vertical axis of the right bolt hole in the inverted T-shaped component.

[0006] The lower support plate includes a lower arc-shaped plate, the inner radius of which is equal to the outer radius of the base steel pipe. A left bolt hole is located on the left side of the lower arc-shaped plate away from the center, and a right bolt hole is located on the right side away from the center. The left and right bolt holes are symmetrically arranged. A lower pipe connecting plate with bolt holes is symmetrically welded vertically to each end of the upper part of the lower arc-shaped plate. A T-shaped component is symmetrically arranged between the two lower pipe connecting plates. The left end of the left T-shaped component forms a left jack support plate, and the right end forms a left bolt mounting plate with a left bolt hole. The right end of the right T-shaped component forms a right jack support plate, and the left end forms a right bolt mounting plate with a right bolt hole. The vertical axis of the left bolt hole in the lower arc-shaped plate is coaxial with the vertical axis of the left bolt hole in the T-shaped component, and the vertical axis of the right bolt hole in the lower arc-shaped plate is coaxial with the vertical axis of the right bolt hole in the T-shaped component.

[0007] This utility model relates to a coaxiality correction device for round steel pipe columns. The vertical axes of the two bolt holes on the left side of the upper mold of the arc-shaped clamp are coaxial with the vertical axes of the two bolt holes on the left side of the lower mold. The vertical axes of the two bolt holes on the right side of the upper mold are coaxial with the vertical axes of the two bolt holes on the right side of the lower mold. The upper mold and the lower mold are connected on the left side by four bolt holes and a mold combined with bolts, and the right side is connected on the right side by four bolt holes and a mold combined with bolts.

[0008] This utility model relates to a coaxiality correction device for round steel pipe columns. The inner arc radius of the upper arc plate of the upper arc-shaped clamp is equal to the inner arc radius of the lower arc plate of the lower clamp, and their inner arc vertical surfaces lie on the same vertical projection arc line. The inner arc vertical surface of the upper arc plate of the upper clamp is in contact with the outer surface of the connecting steel pipe, and the inner arc vertical surface of the lower arc plate of the lower clamp is in contact with the outer surface of the foundation steel pipe. The left and right upper pipe connecting plates of the upper clamp are respectively attached to the left and right lifting vertical plates of the connecting steel pipe and fixedly connected by clamp bolts. The left and right lower pipe connecting plates of the lower clamp are respectively attached to the left and right lifting vertical plates of the foundation steel pipe and fixedly connected by clamp bolts, thus forming a coaxiality correction device for round steel pipe columns.

[0009] The present invention relates to a coaxiality correction device for round steel pipe columns, wherein a fine-tuning jack is provided between the upper and lower templates.

[0010] The present invention relates to a coaxiality correction device for round steel pipe columns, wherein the bolt holes of the upper and lower templates are fitted with the mold connecting bolts in a Φ30H10 / h10 configuration, and the bolt holes of the upper pipe connecting plate, the lower pipe connecting plate, the vertical plate hoisting plate, and the vertical plate hoisting plate are all fitted with the clamp bolts in a Φ20H11 / h11 configuration.

[0011] The present invention relates to a coaxiality correction device for round steel pipe columns, wherein the upper and lower guide molds are both made of steel plates with a thickness of δ=16mm.

[0012] The present invention relates to a coaxiality correction device for round steel pipe columns, wherein the bottom end of the mold connecting bolt is provided with a cone angle.

[0013] This utility model's coaxiality correction device for circular steel pipe columns differs from existing technologies in that it features an upper mold, a lower mold, and two mold-connecting bolts. Each of the upper and lower molds has a set of bolt holes symmetrically arranged. The upper and lower molds are connected by the mold-connecting bolts through the bolt holes to form an arc-shaped clamp. The inner arc radius of the upper mold's arc plate is equal to that of the lower mold's arc plate, and their vertical arc surfaces lie on the same vertical projection arc line, both abutting the outer surface of the circular steel pipe column. After connecting the arc-shaped clamp to the foundation steel pipe using clamp bolts, a hoisting device is used to align the connecting steel pipe with the arc-shaped clamp. The connecting steel pipe is then connected to the arc-shaped clamp using clamp bolts. The pulling force exerted by the clamp bolts and the arc-shaped clamp on the connecting steel pipe during the connection process corrects the concentricity between the connecting steel pipe and the foundation steel pipe. This utility model solves the problems of complex processes, high labor requirements, slow construction speed, and high costs associated with traditional methods for correcting the coaxiality of steel columns. This device is simple to operate, accurate and fast in calibration, reusable, and low in cost.

[0014] The coaxiality correction device for circular steel pipe columns of this utility model will be further described below with reference to the accompanying drawings. The accompanying drawings are only schematic illustrations of the basic structure of the invention, and therefore only show the structure relevant to the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the structure and application of the coaxiality correction device for round steel pipe columns according to this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure.

[0017] Figure 3 This is a schematic diagram of the structure of an arc-shaped clamp formed by the combination of the upper mold, lower mold, and mold with bolts.

[0018] Figure 4 This is a schematic diagram of the upper template structure.

[0019] Figure 5 This is a schematic diagram of the lower template structure.

[0020] Figure 6 This is a schematic diagram of the mold-connecting bolts in the coaxiality correction device for round steel pipe columns. Detailed Implementation

[0021] like Figure 1 , Figure 2 As shown, the coaxiality correction device for round steel pipe columns of this utility model includes a foundation steel pipe 1 that has been erected and meets the standards, and left and right vertical plates 1.1 with bolt holes welded on it; a connecting steel pipe 2 and left and right vertical plates 3 with bolt holes welded on it (the vertical plates meet the design requirements such as verticality).

[0022] like Figure 3 As shown, the coaxiality correction device for round steel pipe columns of this utility model includes an upper mold 4, a lower mold 5, and two mold connecting bolts 6. The upper mold 4 has a set of bolt holes symmetrically arranged on both sides, and the lower mold 5 also has a set of bolt holes symmetrically arranged on both sides. The upper mold 4 and the lower mold 5 are symmetrically connected vertically via the left and right bolt holes and the two mold connecting bolts 6 to form an arc-shaped clamp.

[0023] like Figure 2 , Figure 3 , Figure 4As shown, the upper mold 4 includes an upper arc-shaped plate 4.1. The inner radius of the upper arc-shaped plate 4.1 is equal to the outer radius of the connecting steel pipe 2. A left bolt hole a is opened on the left side of the upper arc-shaped plate 4.1 away from the center, and a right bolt hole b is opened on the right side away from the center; the left bolt hole a and the right bolt hole b are symmetrically arranged. A connecting plate 4.2 with bolt holes is vertically welded to each end of the upper arc-shaped plate 4.1 symmetrically. An inverted T-shaped component 4.3 is symmetrically arranged between the two connecting plates 4.2. The lower left end of the left inverted T-shaped component 4.3 forms the left top plate 4.3.1 of the jack, and the right end forms the left bolt mounting plate 4.3.2 with the left bolt hole a1. The lower right end of the right inverted T-shaped component 4.3 forms the right top plate 4.3.3 of the jack, and the left end forms the right bolt mounting plate 4.3.4 with the right bolt hole b1. The vertical axis of the left bolt hole a of the upper arc plate 4.1 is coaxial with the vertical axis of the left bolt hole a1 of the inverted T-shaped component 4.3. The vertical axis of the right bolt hole b of the upper arc plate 4.1 is coaxial with the vertical axis of the right bolt hole b1 of the inverted T-shaped component 4.3.

[0024] like Figure 2 , Figure 3 , Figure 5 As shown, the lower support plate 5 includes a lower arc-shaped plate 5.1. The inner radius of the lower arc-shaped plate 5.1 is equal to the outer radius of the base steel pipe 1. A left bolt hole a2 is opened on the left side of the lower arc-shaped plate 5.1 away from the center, and a right bolt hole b2 is opened on the right side away from the center. The left bolt hole a2 and the right bolt hole b2 are symmetrically arranged. A lower pipe connecting plate 5.2 with bolt holes is vertically welded to each of the two ends of the lower arc-shaped plate 5.1 symmetrically. A T-shaped component 5.3 is symmetrically arranged between the two lower pipe connecting plates 5.2. The left end of the left T-shaped component 5.3 forms the left support plate 5.3.1 of the jack, and the right end forms the left bolt mounting plate 5.3.2 with the left bolt hole a3. The right end of the right T-shaped component 5.3 forms the right support plate 5.3.3 of the jack, and the left end forms the right bolt mounting plate 5.3.4 with the right bolt hole b3. The vertical axis of the left bolt hole a2 of the lower arc plate 5.1 is coaxial with the vertical axis of the left bolt hole a3 of the T-shaped component 5.3. The vertical axis of the right bolt hole b2 of the lower arc plate 5.1 is coaxial with the vertical axis of the right bolt hole b3 of the T-shaped component 5.3.

[0025] like Figure 3 As shown, the vertical axes of the two bolt holes a and a1 on the left side of the upper mold 4 of the arc-shaped fixture are coaxial with the vertical axes of the two bolt holes a2 and a3 on the left side of the lower mold 5. The vertical axes of the two bolt holes b and b1 on the right side of the upper mold 4 are coaxial with the vertical axes of the two bolt holes b2 and b3 on the right side of the lower mold 5. The upper mold 4 and the lower mold 5 are connected on the left side by four bolt holes and mold connecting bolt 6, and on the right side by four bolt holes and mold connecting bolt 6.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the inner arc radius of the upper arc plate 4.1 of the upper arc-shaped clamp 4 is equal to the inner arc radius of the lower arc plate 5.1 of the lower clamp 5, and their inner arc vertical surfaces are on the same vertical projection arc line. The inner arc vertical surface of the upper arc plate 4.1 of the upper clamp 4 is in contact with the outer surface of the connecting steel pipe 2. The inner arc vertical surface of the lower arc plate 5.1 of the lower clamp 5 is in contact with the outer surface of the foundation steel pipe 1. The left and right upper pipe connecting plates 4.2 of the upper clamp 4 are respectively attached to the left and right lifting vertical plates 3 of the connecting steel pipe 2 and fixedly connected by clamp bolts 7. The left and right lower pipe connecting plates 5.2 of the lower clamp 5 are respectively attached to the left and right lifting vertical plates 1.1 of the foundation steel pipe 1 and fixedly connected by clamp bolts 7, forming a coaxiality correction device for the round steel pipe column.

[0027] like Figure 1 , Figure 2 As shown, in the coaxiality correction device for round steel pipe columns of this utility model, the bolt holes a, a1, a2, a3, b, b1, b2, and b3 of the upper mold 4 and the lower mold 5 are all in Φ30H10 / h10 fit with the mold connecting bolt 6. The bolt holes 4.2 of the upper pipe connecting plate, 5.2 of the lower pipe connecting plate, the bolt holes of the hoisting vertical plate 1.1, and the bolt holes of the hoisting vertical plate 3 are all in Φ20H11 / h11 fit with the clamp bolt 7.

[0028] In this utility model of a coaxiality correction device for round steel pipe columns, both the upper mold 4 and the lower mold 5 are made of steel plates with a thickness of δ=16mm.

[0029] like Figure 6 As shown, during assembly, in order to ensure that the mold connecting bolt 6 can be smoothly inserted into the four holes a, a1, a2, a3 of the upper mold 4 and the four holes b, b1, b2, b3 of the lower mold 5, the bottom end of the mold connecting bolt 6 is provided with a cone angle 6.1.

[0030] To use the coaxiality correction device for circular steel pipe columns of this utility model, it is necessary to prepare the device in advance according to the different cross-sectional dimensions of the circular steel pipe columns. Before use, the upper mold 4 and the lower mold 5 are first connected into an arc-shaped clamp using mold-connecting bolts 6. Then, the arc-shaped clamp is installed onto the foundation steel pipe 1 using the existing vertical lifting plate of the circular steel pipe column, and it is then fitted to the outer surface of the circular steel pipe. Next, the steel pipe 2 to be welded is lifted onto the foundation steel pipe 1 using lifting equipment, and the arc-shaped clamp is connected to the steel pipe 2. During the connection process, the coaxiality of the foundation steel pipe 1 and the steel pipe 2 can be corrected by using the pulling force of the foundation steel pipe 1 and the arc-shaped clamp on the steel pipe 2. To ensure smooth correction, a jack 8 is installed between the upper mold 4 and the lower mold 5. The jack 8 is used for fine-tuning during installation.

[0031] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A coaxiality correction device for a circular steel pipe column, comprising a foundation steel pipe (1) that has been erected and meets the standards, and left and right vertical lifting plates (1.1) with bolt holes welded on it; a connecting steel pipe (2) and left and right vertical lifting plates (3) with bolt holes welded on it, wherein the vertical lifting plates meet the verticality design requirements, characterized in that: The upper mold (4), the lower mold (5), and the two mold connecting bolts (6) are provided. The upper mold (4) is provided with a set of bolt holes on each side symmetrically, and the lower mold (5) is provided with a set of bolt holes on each side symmetrically. The upper mold (4) and the lower mold (5) are symmetrically connected from top to bottom through the left and right bolt holes and the two mold connecting bolts (6) to form an arc-shaped clamp.

2. The coaxiality correction device for round steel pipe columns according to claim 1, characterized in that: The upper mold (4) includes an upper arc plate (4.1). The inner radius of the upper arc plate (4.1) is equal to the outer radius of the connecting steel pipe (2). A left bolt hole (a) is opened on the left side of the upper arc plate (4.1) away from the center, and a right bolt hole (b) is opened on the right side away from the center. The left bolt hole (a) and the right bolt hole (b) are symmetrically arranged. A connecting plate (4.2) with bolt holes is vertically welded to each of the two ends of the lower part of the upper arc plate (4.1). An inverted T-shaped component (4.3) is symmetrically arranged between the two connecting plates (4.2). The inverted T-shaped component (4.3) on the left is symmetrically arranged between the two connecting plates (4.2). 3) The lower left end forms the left top plate of the jack (4.3.1), and the lower right end forms the left bolt mounting plate (4.3.2) with the left bolt hole (a1). The lower right end of the inverted T-shaped member (4.3) forms the right top plate of the jack (4.3.3), and the lower left end forms the right bolt mounting plate (4.3.4) with the right bolt hole (b1). The vertical axis of the left bolt hole (a) of the upper arc plate (4.1) is coaxial with the vertical axis of the left bolt hole (a1) of the inverted T-shaped member (4.3), and the vertical axis of the right bolt hole (b) of the upper arc plate (4.1) is coaxial with the vertical axis of the right bolt hole (b1) of the inverted T-shaped member (4.3). The lower template (5) includes a lower arc plate (5.1). The inner radius of the lower arc plate (5.1) is equal to the outer radius of the base steel pipe (1). A left bolt hole (a2) is opened on the left side of the lower arc plate (5.1) away from the center, and a right bolt hole (b2) is opened on the right side away from the center. The left bolt hole (a2) and the right bolt hole (b2) are symmetrically arranged. A lower pipe connecting plate (5.2) with bolt holes is vertically welded to each of the two ends of the lower arc plate (5.1). A T-shaped component (5.3) is symmetrically arranged between the two lower pipe connecting plates (5.2). 3) The upper left end forms the left support plate of the jack (5.3.1), and the upper right end forms the left bolt mounting plate (5.3.2) with the left bolt hole (a3). The upper right end of the right T-shaped member (5.3) forms the right support plate of the jack (5.3.3), and the upper left end forms the right bolt mounting plate (5.3.4) with the right bolt hole (b3). The vertical axis of the left bolt hole (a2) of the lower arc plate (5.1) is coaxial with the vertical axis of the left bolt hole (a3) ​​of the T-shaped member (5.3), and the vertical axis of the right bolt hole (b2) of the lower arc plate (5.1) is coaxial with the vertical axis of the right bolt hole (b3) of the T-shaped member (5.3).

3. The coaxiality correction device for round steel pipe columns according to claim 1 or 2, characterized in that: The vertical axes of the two bolt holes (a, a1) on the left side of the upper mold (4) of the arc-shaped clamp are coaxial with the vertical axes of the two bolt holes (a2, a3) on the left side of the lower mold (5). The vertical axes of the two bolt holes (b, b1) on the right side of the upper mold (4) are coaxial with the vertical axes of the two bolt holes (b2, b3) on the right side of the lower mold (5). The upper mold (4) and the lower mold (5) are connected and combined on the left side by four bolt holes (a, a1, a2, a3) and mold connecting bolts (6), and on the right side by four bolt holes (b, b1, b2, b3) and mold connecting bolts (6).

4. The coaxiality correction device for round steel pipe columns according to claim 3, characterized in that: The inner arc radius of the upper arc plate (4.1) of the upper arc-shaped clamp (4) is equal to the inner arc radius of the lower arc plate (5.1) of the lower clamp (5), and their inner arc vertical surfaces are on the same vertical projection arc line. The inner arc vertical surface of the upper arc plate (4.1) of the upper clamp (4) is in contact with the outer surface of the connecting steel pipe (2). The inner arc vertical surface of the lower arc plate (5.1) of the lower clamp (5) is in contact with the outer surface of the foundation steel pipe (1). The left and right upper pipe connecting plates (4.2) of the upper clamp (4) are respectively attached to the left and right lifting vertical plates (3) of the connecting steel pipe (2) and fixedly connected by clamp bolts (7). The left and right lower pipe connecting plates (5.2) of the lower clamp (5) are respectively attached to the left and right lifting vertical plates (1.1) of the foundation steel pipe (1) and fixedly connected by clamp bolts (7) to form a coaxiality correction device for round steel pipe column.

5. The coaxiality correction device for round steel pipe columns according to claim 1, characterized in that: A fine-tuning jack (8) is provided between the upper mold (4) and the lower mold (5).

6. The coaxiality correction device for round steel pipe columns according to claim 3, characterized in that: The bolt holes (a, a1, a2, a3, b, b1, b2, b3) of the upper mold (4) and the lower mold (5) are fitted with the mold connecting bolt (6) in a Φ30H10 / h10 configuration.

7. The coaxiality correction device for round steel pipe columns according to claim 4, characterized in that: The bolt holes of the upper pipe connecting plate (4.2), the lower pipe connecting plate (5.2), the hoisting vertical plate (1.1), and the hoisting vertical plate (3) are all fitted with the clamp bolts (7) in a Φ20H11 / h11 configuration.

8. The coaxiality correction device for round steel pipe columns according to claim 1, characterized in that: Both the upper mold (4) and the lower mold (5) are made of steel plate with a thickness of δ=16mm.

9. The coaxiality correction device for round steel pipe columns according to claim 1, characterized in that: The bottom end of the mold connecting bolt (6) is provided with a cone angle (6.1).

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