Wind power tower welding and grounding device and using method thereof

Abstract

The invention relates to a wind power tower welding and grounding device and a using method thereof. The wind power tower welding and grounding device comprises a support and a rotating beam arrangedon the support, wherein the rotating beam is rotatably arranged along a fulcrum of the rotating beam and the support, a balancing weight is arranged at one end of the rotating beam, a graphite grounding assembly is arranged at the other end of the rotating beam, a grounding wire hole is formed in the rotating beam, the graphite grounding assembly comprises a sleeve arranged at one end of the rotating beam, a copper ring is arranged in the sleeve, a colloidal graphite column capable of stretching up and down is arranged in the copper ring, a bottom plate is arranged at the lower end of the colloidal graphite column and arranged in the copper ring, a plurality of springs are arranged between the lower end face of the bottom plate and the bottom face of the sleeve, and the springs stretch tobuffer the contact stress between the colloidal graphite column and the outer end face of a wind power tower. The wind power tower welding and grounding device has the advantages that the grounding device is changed from a traditional metal fastening tower flange into graphite friction contact, damage to the wind power tower is reduced, the length of a grounding wire can be properly reduced, and welding precision and welding quality are guaranteed.

Description

Technical field: [0001] The invention belongs to the field of wind power tower welding, and in particular relates to a wind power tower welding grounding device and a use method thereof. Background technique: [0002] When making wind power towers, each tube section with a length of 2-4 meters and a diameter of 4-6 meters is assembled and welded to form a tower section, flanges are welded at both ends of the tower section, and then the flanges of adjacent tower sections are welded together. The wind power tower is formed by bolt connection, and the annular seam between adjacent barrel sections is welded on the roller frame, which drives the barrel section to rotate, and the welding equipment welds the annular seam with the rotation of the barrel section. In order to ensure welding safety, it is usually necessary to fix a grounding device on the barrel joint. One end of the grounding wire of the welding equipment is connected to the barrel joint through the grounding device, ...

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Problems solved by technology

[0003] At present, the grounding wire is fixed to the flange hole at the end of the tower section through the grounding device. The grounding device is a clamp, and the clamp is fastened to the flange hole at the end of the tower section by bolts. The rotatable connection is realized through the connecting rod. When the cylinder joint rotates, one end of the grounding wire will rotate with the rotation of the cylinder joint, and the grounding wire will be wound around the clamp. The specific defects are as follows: 1. The grounding device and the flange are fastened by bolts. It is easy to cause scratches on the outer end face of the flange of the tower section, and damage the inner wall of the flange hole. During the welding process, if the clamp is tightened and loosened, the clamp will slip along the flange, causing electric sparks to damage the flange surface. If the above situation occurs, the flange will be directly scrapped; 2. With the normal use time, the grounding device will continue to oxidize, and the resistance value will increase. While affecting the welding quality, The wire clip heats up seriously, and the temperature can be as high as 300-400°C, which has great potential safety hazards; 3. One end of the grounding wire is fixed in any flange hole of the flange through the wire clip. When the barrel joint is rotated and welded, the grounding wire It will rotate with the flange, and the length of the grounding wire needs to be increased, at least 10 meters, resulting in a large welding pressure drop, reducing the accuracy of welding parameters, and reducing welding quality

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