36results about How to "Welding quality is easy to guarantee" patented technology

The invention relates to the field of technologies for welding tubular piles, and particularly discloses a tubular pile welding production line which comprises welding devices. The tubular pile welding production line is characterized by further comprising a material translation manipulator for synchronously picking and shifting to-be-machined tubular piles; a tubular pile feeding rotary drum, a conveying lifting platform, a divisional straightening turntable, a flattening cabinet, a material turnover turntable, a welding positioning table, a discharging lifting table and a discharging rotary drum are sequentially arranged on a side of the material translation manipulator, the tubular piles can be upwardly hoisted by the conveying lifting table, required-to-be-welded connectors of the tubular piles can be correspondingly straightened by the divisional straightening turntable, the tubular piles can be flattened and welded by the flattening cabinet and can be turned over by the material turnover turntable, the turned tubular piles further can be welded by the welding positioning table, the welded tubular piles can be stacked by the discharging lifting table, the tubular piles can be delivered by the discharging rotary drum, and the welding devices are correspondingly arranged on a side of the flattening cabinet and a side of the welding positioning table. The tubular pile welding production line has the advantages that the tubular pile welding production line is simple and efficient in structural setting, tubular pile material welding working procedures are decomposed by the aid of the tubular pile welding production line, excessive manual participation basically can be omitted except for charging, the welding quality of products is easy to guarantee, and the production efficiency can be greatly enhanced.

The invention discloses a construction method for integrally lifting a large-span type steel beam pulling bar and particularly discloses a construction method for splicing and welding to manufacture a simple pulling bar in site by using a large-span type steel beam aiming at the characteristics of large span and complex modelling for integral lifting, aiming at overcoming the defects of wide required field, large-size mechanical equipment lifting and high cost of the traditional construction method. The invention provides a novel construction method for a project with a narrow field and a complex peripheral environment. When the construction of a large-span steel structure type steel beam is carried out by adopting the method, a profile steel beam is processed in segments as required in a factory, all segments are spliced and welded in site, therefore overhead working is prevented, welding quality is easy to ensure, site requirement for lifting by adopting multiple large-size mechanical equipment is prevented, project cost is reduced, and a construction period is shortened.