| 摘要 |
PURPOSE:To permit low acceleration displacement of a supported body and certainly prevent high acceleration displacement by engaging a driving shaft in screwing process with the engagement member connected with the inertia body through a spring member, in the brake device for supporting a large diameter pipe for a high pressure fluid. CONSTITUTION:The inertial resistance of a body 8 of inertia is very small when a driving shaft 2 performs low acceleration displacement in the acxial direction, and the body 8 of inertia is rotated by the rotational force applied to an engagement member 12 by a spring member 11 and the second screw part 17, and the driving shaft 2 does not contact with the body 8 of inertia at the first screw part 13, so the displacement in the axial direction is permitted. In high acceleration displacement, the body 8 of inertia can not follow rotate in following because of the inertial resistance, so the driving shaft 2 is contacted under pressure with the body 8 of inertia on the first screw member 13, and thus the displacement in the axial direction can be prevent. |
