Assembly process of tower sections for large-diameter wind-power tower tube

Abstract

The invention discloses assembly process of tower sections for a large-diameter wind-power tower tube. The two tower sections are placed on corresponding groups of roller racks. Two groups of support rollers are arranged on each group of roller racks with one roller being as a main driving roller. Three groups of alligator-type assembly machines having rollers are positioned according to different positions in the tower sections by pushing the three groups in the tower sections. Main driving rollers of the groups of roller racks drive the two tower sections to rotate at the same time. During rotation of the tower sections, CO2 gas is utilized for shielded welding, positioning and welding in the position within the range of 200-300 mm of liftable roller centers of the three groups of alligator-type assembly machines having rollers. Positioning and welding are carried out in three positions at the same time. The assembly process of the tower sections for the large-diameter wind-power tower tube has following beneficial effects: continuous adjustments are made to overall alignment tolerance of whole sections of circular arcs in order to reduce stress concentration points at butt joints; stress can be uniformly distributed and quality risk is reduced; assembly efficiency is greatly improved; and accuracy quality is ensured.

Description

technical field [0001] The invention relates to a process for assembling tower sections for large-diameter wind power towers, and belongs to the technical field of wind power infrastructure preparation. Background technique [0002] Wind power is the conversion of wind kinetic energy into electrical energy. As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. The wind power tower is the foundation of wind power generation equipment. It is generally rolled into a tubular structure from steel plates, then welded to form a tower section, and then formed by butt welding of multiple corresponding tower sections. For the combination of cylindrical tower tubes, the traditional method is to use manual hydraulic jacks and welding clamps. The combination of manual hydraulic jacks and welding clamps is extremely time-consuming and laborious. [0003] Therefore, people began to apply the crocodile-type matching machine. Th...

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Problems solved by technology

It does solve the wrong side error caused by grouping in the production process, and improves a certain efficiency; but there are some defects in this grouping method. The reason for the formation of the wrong side of the tower section group is often due to the accuracy of the previous process after rolling back to the circle. Due to the low height, the misalignment is not a point but a circular arc. The crocodile-type alignment machine works by using the four oil cylinders on the head to drive the fixed lifting roller to adjust the misalignment of the tower section alignment. This alignment method only The amount of misalignment can be adjusted for one point, and the overall misalignment amount of the arc can be adjusted by adjusting the amount of misalignment of multiple points in the same arc. The stress is uneven, which bury hidden dangers for later use; moreover, the work efficiency of assembling tower tubes by adopting the cycle method of adjustment, welding, readjustment, and rewelding is too low, which does not meet the needs of modern production

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