Tube expanding unit for large-sized tube

Abstract

Abstract PURPOSE:To easily perform the expansion of the pipe end of a large-sized pipe with high accuracy by pushing the expanding ball held by the front end frame penetrating rod with oil pressure into the pipe end of the large-sized pipe which is placed on the three way supporting roller line located between four corner beam combining frames. CONSTITUTION:A large-sized pipe 30 is placed with suspension on the three way supporting roller 21, 22, 22' line located between the front and back frame wall 16... which are fixed on a base stand 15 and whose four corners are combined by a beam 17. The tube expanding ball 23 held by the supporting rod 24 penetrating the front side frame wall 16 and a guide rod 25 is advanced with the pressure by the oil pressure of a linking plate 26, pushed into the pipe end and the prescribed length is expanded 30a. The expanding ball 23 is drawn with the pipe end coming in contact with a knocking plate 19 by retreating the tube expanding ball 23. The pipe end expansion 30a of a large- sized pipe 30 is performed easily and with high accuracy by said operation.

Inventors

• 👤 Yoshio Urabe
• 👤 占部　良雄
• 👤 Takeshi Sekiguchi
• 👤 剛 関口

Bibliographic Details