CN106639610A - Iron tower tail edge continuous leveling method - Google Patents

Abstract

A method for leveling iron tower feet. The invention enables the anchor bolts with limited expansion length to be further extended by connecting bolts and nuts to increase the lifting height of iron tower feet. It is especially suitable for rectification of inclined iron towers, especially for goafs The correction of the iron tower in the district reduces the difficulty of construction, shortens the construction period, and saves a lot of manpower and material resources. The installation of reinforcement screws further increases the strength of the device, ensuring that the device can remain stable during long-term use and effectively avoid breakage and deformation. The filling holes on the upper and lower flanges can ensure that the cement is poured completely without leaving air bubbles.

Description

A method for connecting and leveling iron tower feet

technical field

The invention relates to a maintenance method for an iron tower foot, in particular to a continuous leveling method for an iron tower foot.

Background technique

Iron towers are widely used in power transmission, communication and other fields. During the use of iron towers, tower base settlement often occurs, especially in goaf areas, where settlement is particularly obvious. If the inclination angle of the iron tower is too large, the iron tower has to be replaced, and the replacement of the iron tower requires a large amount of work, and most of the iron towers are distributed in the fields in mountainous areas, which not only makes construction difficult, but also easily affects the production and life of local residents. The existing tower foundation anchor bolts have a certain reserved length, but they can only cope with extremely small settlements. Some iron tower foundations are installed with oil cylinders in advance, and the oil cylinders are used to lift when the tower foundations settle, but the installation of oil cylinders The cost is high, and it is prone to damage and leakage when it is outdoors for a long time, and its stability cannot be guaranteed.

Contents of the invention

Aiming at the deficiencies of the prior art, the invention provides a method for leveling the iron tower foundations.

The technical solution adopted in the present invention is: a method for leveling the iron tower foundation, comprising the following steps:

(1) Calculate the lifting height of each tower foot, separate the tower foundation anchor bolts from the iron tower foot, and use lifting equipment to pull up the inclined tower foot of the iron tower, and the lifting height is 50mm higher than the calculated height;

(2) Install the lower flange plate on the anchor bolts and fix it with nuts. The lower flange plate is square, with a filling hole in the middle;

(3) The top of the anchor bolt is connected to the connecting nut, and the top of the connecting nut is connected to the connecting bolt. The connecting length is actually measured according to the inclination of the tower;

(4) The upper flange plate is installed on the connecting bolt, and the bottom of the upper flange plate is fixed with nuts, and the structure of the upper flange plate is the same as that of the lower flange plate;

(5) Put the iron tower feet into the connecting bolts, and clamp and fix both ends with nuts;

(6) Install all the tower feet that need to be connected according to the above method, and make fine adjustments to the connecting bolts and connecting nuts, so that all the tower feet of the iron tower are on the same plane;

(7) Apply butter to all the above-mentioned connecting parts, and wrap plastic bags;

(8) Fix the mold outside the above connection structure, fill the mold with cement, and remove the lifting equipment after the cement solidifies.

The above-mentioned method for leveling the foundation of an iron tower is characterized in that: in step (4), four reinforcement screws are installed around each connection bolt, and the reinforcement screws are fixed on the upper and lower flanges through matching reinforcement nuts On the board, four reinforcing screws are evenly distributed around the corresponding connecting bolts.

The invention enables the anchor bolts with limited expansion length to be further extended by connecting the bolts and nuts, increasing the lifting height of the tower feet, and is especially suitable for rectification of inclined iron towers, especially for deflection correction of iron towers in gobs, reducing construction difficulty , shorten the construction period, save a lot of manpower and material resources. Installing reinforcing screws can further increase the strength of the device, ensuring that the device can remain stable during long-term use, and effectively avoid breakage and deformation. The filling holes on the upper and lower flanges can ensure that the cement is poured completely without leaving air bubbles.

Description of drawings

Fig. 1 is a top view of the connection structure of the present invention;

Fig. 2 is the front view of the connection structure of the present invention;

Fig. 3 is the schematic diagram of the structure after the splicing of the present invention is completed;

In the figure: 1-upper flange plate, 2-lower flange plate, 3-anchor bolt, 4-connection bolt, 5-connection nut, 6-lower fixing nut, 7-upper leveling nut, 8-upper fixing nut , 9-reinforcing screw, 10-reinforcing nut, 11-filling hole.

detailed description

A method for leveling the foot of an iron tower. Firstly, the inclination of the iron tower and the settlement depth of each foot of the tower are measured, so as to calculate the height that each foot of the tower needs to be lifted. Contact the fixed connection between the tower foot and the anchor bolt, use the lifting equipment to pull up the tower foot, and the lifting height is 50mm higher than the required lifting height. As shown in Figures 1 and 2, each tower base has four anchor bolts 3, the lower flange plate 2 is installed on the anchor bolts 3, fixed by the lower fixing nut 6, and the connecting nut 5 is connected to the anchor bolts , the connecting nut is connected to the connecting bolt 4, and the upper flange plate 1 is installed on the connecting bolt, and the upper flange plate 1 is positioned by the upper leveling nut 7 at the bottom, and four reinforcements are installed around each group of connecting bolts, connecting nuts and anchor bolts Screws 9 and reinforcing screws 9 are evenly distributed in rings around the connecting bolts, connecting nuts and anchor bolts. The reinforcing screws 9 are fixed on the upper and lower flange plates by reinforcing nuts 10. The upper and lower flange plates are of square structure , the middle part opens filling hole 11. A pair of upper fixing nuts 8 are arranged above the upper flange plate, and the tower foot is placed on the connecting bolt 4, and the above fixing nuts 8 are fixed. Other tower feet that need to be lifted are also fixed by the above method. After fixing, fine-tune each connecting bolt, connecting nut and reinforcing screw again, so that all tower feet of the iron tower are on the same plane. Butter and wrap around plastic bag. Fix the mold outside the connection structure, pour cement into the mold, and remove the lifting equipment after the cement is completely solidified, so as to complete the leveling of the foundation, as shown in Figure 3.

Claims (2)

1. A method for leveling the iron tower foot is characterized in that it may further comprise the steps: (1) Calculate the lifting height of each tower foot, separate the tower foundation anchor bolts from the iron tower foot, and use lifting equipment to pull up the inclined tower foot of the iron tower, and the lifting height is 50mm higher than the calculated height; (2) Install the lower flange plate on the anchor bolts and fix it with nuts. The lower flange plate is square, with a filling hole in the middle; (3) The top of the anchor bolt is connected to the connecting nut, and the top of the connecting nut is connected to the connecting bolt. The connecting length is actually measured according to the inclination of the tower; (4) The upper flange plate is installed on the connecting bolt, and the bottom of the upper flange plate is fixed with nuts, and the structure of the upper flange plate is the same as that of the lower flange plate; (5) Put the iron tower feet into the connecting bolts, and clamp and fix both ends with nuts; (6) Install all the tower feet that need to be connected according to the above method, and make fine adjustments to the connecting bolts and connecting nuts, so that all the tower feet of the iron tower are on the same plane; (7) Apply butter to all the above-mentioned connecting parts, and wrap plastic bags; (8) Fix the mold outside the above connection structure, fill the mold with cement, and remove the lifting equipment after the cement solidifies. 2. A method for leveling iron tower foundations according to claim 1, characterized in that in step (4), four reinforcing screws are installed around each connecting bolt, and the reinforcing screws are fixed by matching reinforcing nuts On the upper and lower flange plates, four reinforcing screws are evenly distributed around the corresponding connecting bolts.