Positioning device for welding circular steel column of tower crown

Abstract

The utility model relates to the technical field of constructional engineering construction equipment, and discloses a positioning device for welding a tower crown circular steel column in order to solve the problems that in the prior art, when the tower crown circular steel column is welded, the positioning precision is poor, and the difficulty is high. Comprising an upper annular fixing device fixed to an upper steel column, a lower annular fixing device fixed to a lower steel column and a positioning steel plate, a first clamping groove is formed in the lower end of the upper annular fixing device, a second clamping groove is formed in the upper end of the lower annular fixing device, and a rotating shaft is arranged in the second clamping groove; the lower end of the positioning steel plate is fixed in the second clamping groove through a rotating shaft, and fixing bolts are arranged on the upper annular fixing device and the lower annular fixing device. The first clamping groove of the upper annular fixing device is matched with the rotating shaft of the lower annular fixing device, manual welding of temporary supports is replaced with mechanical self-locking, and the risk of high-altitude operation is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering construction equipment, especially relates to a positioning device for tower crown circular steel column welding. BACKGROUND

[0002] In the super high-rise building tower crown steel construction, the precise butt joint and welding of steel column are the core link of ensuring the safety and stability of the overall structure. The traditional construction method has the following technical defects:

[0003] Manual positioning deviation is large: the traditional method relies on hoisting and manual measurement positioning, is affected by wind force, hoisting swing and visual error, and the coaxial degree control precision often exceeds the specification requirement of ±3mm.

[0004] Temporary support system is complex: the conventional process needs to set up a temporary positioning frame, and problems such as large land occupation and many safety hazards in high-altitude operation exist.

[0005] Angle adjustment efficiency is low: the existing positioning device lacks a rotating adjustment mechanism, and the circumferential angle adjustment of the steel column needs to repeatedly disassemble and assemble the fixing bolts, and the construction time of a single node is as long as 2-3 hours.

[0006] Poor reusability: the temporary welded positioning piece is easy to damage the steel column base material when it is removed, which affects the structural durability. In some landmark building projects, the steel column welding deviation caused by the deviation of the positioning device reaches 2mm, directly causing the rework cost to increase by 25% and the construction period to be delayed by 7 days. INVENTION CONTENTS

[0007] The utility model aims at providing a welding positioning device suitable for multiple specifications of steel columns, high positioning precision and strong anti-vibration performance, so as to improve the construction efficiency and safety, and solve the problems of poor positioning precision and high difficulty in the welding of the tower crown circular steel column in the prior art.

[0008] To achieve the above-mentioned purpose, the specific technical scheme of the positioning device for the welding of the tower crown circular steel column of the utility model is as follows:

[0009] A positioning device for the welding of a tower crown circular steel column, comprising an upper ring-shaped fixing device fixed on an upper steel column, a lower ring-shaped fixing device fixed on a lower steel column and a positioning steel plate, the lower end of the upper ring-shaped fixing device is provided with a first clamping groove, the upper end of the lower ring-shaped fixing device is provided with a second clamping groove, a rotating shaft is arranged in the second clamping groove, the lower end of the positioning steel plate is fixed in the second clamping groove through the rotating shaft, and the upper ring-shaped fixing device and the lower ring-shaped fixing device are both provided with fixing bolts.

[0010] Further, the positioning steel plate comprises a steel plate body and a positioning pin, one end of the steel plate body is inserted into a rotating shaft of the lower annular fixing device, the other end is embedded into a clamping groove of the upper annular fixing device, and the positioning pin vertically penetrates the steel plate body and is used for calibrating the welding position of the steel column.

[0011] Further, the second clamping groove is uniformly provided with 3-6 on the lower annular fixing device.

[0012] Further, the first clamping groove is provided with a tapered opening.

[0013] Further, the two ends of the rotating shaft are fixed in the lower annular fixing device through fixed bearings.

[0014] Further, the inner wall of the upper annular fixing device is provided with a wear-resistant bushing for reducing friction.

[0015] Further, one side of the positioning pin is provided with a positioning plate, and the welding position of the steel column is positioned through the positioning plate.

[0016] The positioning device for the welding of the tower crown circular steel column has the following advantages:

[0017] 1. Improve the welding positioning precision: through the cooperation of the first clamping groove of the upper annular fixing device and the rotating shaft of the lower annular fixing device, and the positioning pin and the adjustable positioning plate of the positioning steel plate, compared with the traditional manual calibration precision, the steel column welding precision is effectively improved.

[0018] 2. Enhance the versatility of the device: the second clamping groove of the lower annular fixing device is uniformly provided with 3-6, combined with the tapered opening design of the first clamping groove and the fixed bolt, it can adapt to different diameter steel columns within a certain range, and reduce the cost of customized tooling.

[0019] 3. Reduce the risk of high-altitude operation: replace the temporary support of manual welding with mechanical self-locking, effectively reduce the risk of high-altitude operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The device overall structure schematic diagram provided by the utility model Figure 1 ;

[0021] Figure 2 The device overall structure schematic diagram provided by the utility model Figure 2 ;

[0022] Figure 3 The device positioning steel plate explosion map provided by the utility model;

[0023] Figure 4 The diagonal grid structure tower crown overall structure schematic diagram provided by the utility model.

[0024] Fig. 1, upper steel column; 2, lower steel column; 3, upper ring-shaped fixing device; 31, fixing bolt; 32, first clamping groove; 4, lower ring-shaped fixing device; 41, second clamping groove; 5, positioning steel plate; 51, rotating shaft; 52, positioning pin; 53, positioning plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0026] Referring to Figures 1-4 The utility model provides a kind of positioning device for tower crown round steel column welding, it is applicable to the butt joint and welding construction of steel column of diagonal grid structure tower crown. Including upper / lower ring-shaped fixing device: upper ring-shaped fixing device 3 and lower ring-shaped fixing device 4 are respectively fixed on steel column by the fixed bolt 31 of threaded locking, the lower side of upper ring-shaped fixing device 3 is evenly provided with first clamping groove 32, the upper side of lower ring-shaped fixing device 4 is provided with second clamping groove 41 corresponding to first clamping groove 32, clamping groove is evenly distributed with multiple, second clamping groove 41 is provided with rotating shaft 51 inside. Positioning steel plate 5: the lower end of steel plate main part is hinged and fixed in second clamping groove 41 by rotating shaft 51, its upper end is embedded first clamping groove 32, positioning pin 52 is vertically through positioning steel plate 5 and is provided with wedge-shaped positioning plate 53 with scale line, to facilitate the welding of steel column after positioning. Inner wall is provided with wear-resistant bushing of polytetrafluoroethylene, can effectively reduce the friction loss with steel column.

[0027] Preferably, the opening position of first clamping groove 32 is provided as tapered opening corresponding to positioning steel plate 5, and the opening part is larger relative to the opening part of second clamping groove 41, to facilitate the clamping of positioning steel plate 5 into the clamping groove.

[0028] In the installation stage, first the bottom ring-shaped device is sleeved into lower steel column 2, then fixed bolt 31 is locked and fixed; upper ring-shaped fixing device 3 is fixed on upper steel column 1 in the same way, lower end of positioning steel plate 5 is inserted into rotating shaft 51 clamping groove, rotating shaft 51 is adjusted to make positioning steel plate 5 vertical state; its upper end is clamped into upper ring-shaped fixing device 3 through first clamping groove 32. When hoisting upper steel column, adjust the positioning pin 52 on the positioning steel plate 5 to the weld design position, rotate the positioning plate 53, so that the scale mark of the positioning plate 53 is parallel to the butt joint position of the two cylinders, and tighten the bolt; after completing positioning, inject fast-curing epoxy resin glue for temporary fixing, carry out ring seam welding using CO2 gas shielded welding, and after welding, reverse rotation of fixing bolt 31 can demould and remove the device.

[0029] For the larger diameter tower crown circular steel column can be set larger diameter upper and lower ring fixing device, and according to the diameter opening corresponding card slot, increase more positioning steel plate 5 for positioning support, for the smaller diameter tower crown circular steel column can be set smaller diameter upper and lower ring fixing device, and according to the diameter opening corresponding card slot, can be provided at least three positioning steel column for positioning support.

[0030] In summary, the utility model provides a positioning device for the welding of super high-rise tower crown circular steel column, which effectively solves the problems of low precision, poor efficiency and weak adaptability in traditional tower crown structure steel column welding through mechanical structural design. The combination structure of upper / lower ring fixing device and rotatable positioning steel plate 5 realizes the positioning and fixing of steel column butt joint through the mechanical cooperation of the first card slot 32 with tapered opening and the second card slot 41 with rotating shaft 51. Compared with the traditional hydraulic positioning technology, the present scheme reduces the cost through pure mechanical structure and is more suitable for high-altitude complex working conditions. The mechanical self-locking replaces the artificial welding temporary support, reducing the risk of high-altitude operation.

[0031] The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A positioning device for welding of a tower crown circular steel column, characterized in that, The utility model relates to a kind of steel column positioning device, including fixed in upper steel column (1) upper annular fixing device (3), fixed in lower steel column (2) lower annular fixing device (4) and positioning steel plate (5), the lower end of the upper annular fixing device (3) is provided with first clamping slot (32), the upper end of the lower annular fixing device (4) is provided with second clamping slot (41), second clamping slot (41) is provided with rotating shaft (51) inside, the lower end of the positioning steel plate (5) is fixed in second clamping slot (41) by rotating shaft (51), and fixed bolt (31) is provided on the upper annular fixing device (3) and lower annular fixing device (4).

2. The positioning device for welding of tower head circular steel column according to claim 1, characterized in that, The positioning steel plate (5) includes steel plate main body and locating pin (52), one end of the steel plate main body is inserted into rotating shaft (51) of lower annular fixing device (4), the other end is embedded into the clamping slot of upper annular fixing device (3), and the locating pin (52) is vertically through the steel plate main body, for calibrating the welding position of steel column.

3. The positioning device for welding of tower head circular steel column according to claim 1, characterized in that, The second clamping slot (41) is evenly provided with 3-6 on the lower annular fixing device (4).

4. The positioning device for welding of tower head circular steel columns according to claim 3, characterized in that, The first clamping slot (32) is taperedly provided with opening.

5. The positioning device for welding of tower crown circular steel columns as claimed in claim 1, wherein, Both ends of the rotating shaft (51) are fixed in lower annular fixing device (4) by fixed bearing.

6. The positioning device for welding of tower head circular steel columns according to claim 1, characterized in that, The inner wall of the upper annular fixing device (3) is provided with wear-resistant bushing for reducing friction.

7. The positioning device for welding of tower head circular steel columns according to claim 2, characterized in that, One side of the locating pin (52) is provided with positioning plate (53), and the welding position of steel column is positioned by the positioning plate (53).

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