Kabushiki Kaisha Kobe Seiko Sho

Yuji Nakajima

Katsuhiko Yoshida

Yoshinori Narahashi

Hiroaki Kondo

Kazuhiko Sakiyama

Fumio Kinoshita

Minoru Aoi

Kuzuhiko Sakiyama

Tatsuo Komoto

Yoshiaki Inagaki

Shigeki Ashida

Kenji Koike

Method for building an underground continuous wall

A method and apparatus for automatically tightening and untightening bolts which are assembling and fastening devices for a form used in centrifugal compacting and molding concrete products, in which engaging members are brought into engagement with rotary supports which support the form. A bolt tightening and untightening mechanism is moved with the rotary supports, and the bolts are automatically tightened and untightened during the movement thereof. Engaging members are operated more than a dimensional difference of the rotary supports so that even if dimensions of the rotary supports are different according to the kind of the form, the engaging members can be positively engaged with the rotary supports, or the bolt tightening and untightening mechanism is moved up and down in advance so that a height position thereof becomes a predetermined height with respect to the rotary supports.

Method for automatically tightening and untightening a bolt

Method and apparatus for automatically tightening and untightening a bolt

Growing community of inventors

Kobe, Japan

Yuji Nakajima