Title:
【発明の名称】ボルト、スタッド等を機械的に引張る方法並びに装置
Document Type and Number:
Japanese Patent JP2835878
Kind Code:
B2
Abstract:
For elongating and relaxing a bolt, a stud and the like (1) having an axis and arranged in an object (2), the stud (1) is connected with a first part (4) which is moveable only in an axial direction so as to pull the stud (1) in the axial direction to elongate the stud (1) and thereby to tension it in the object (2) or to relax the stud (1). The first part (4) is moved only in the axial direction by connecting the first part (4) with a second part (3) which is rotatable about the axis. A friction element (5) cooperates with at least one of the parts (3, 4) so as to change friction between the parts (3, 4) so that one of the parts (3, 4) has a higher friction than another of the parts (3, 4). The friction element (5) abuts against an outer surface of the object (2) without being connected to the object (2). Engaging means (13, 8) are provided on the parts (3, 4) for applying forces thereto.
Inventors:
JANKAA JON KEI
Application Number:
JP51965393A
Publication Date:
December 14, 1998
Filing Date:
May 05, 1993
Export Citation:
Assignee:
JANKAA JON KEI
International Classes:
B23P11/02; B25B21/00; B25B23/00; B23P19/06; B25B29/02; F16B21/04; F16B31/04; F16B37/08; F16B33/02; (IPC1-7): F16B31/04; B23P19/06; B25B21/00
Domestic Patent References:
| JP4505501A |
Attorney, Agent or Firm:
Masayuki Asakura