EXPERIMENTAL SPECIMEN FALL BRAKING DEVICE OF GRAVITY FREE EXPERIMENTAL INSTALLATION

摘要

PURPOSE:To brake a falling specimen in the lower end space of a falling tower so as to securely stop it with out any strong shock by arranging elastic plate members, the through hole diameters of which in the center of the falling tower are gradually reduced at intervals of plural stages. CONSTITUTION:Many rubber made elastic disc plate members 3, 3', 3'' having circular through holes 4, 4', 4'' in their centers are arranged at intervals in the lower end space of a falling tower 1 formed underground and the diameter of any plate member is reduced as its position is lower. Elastic plate members 5, 5', 5'' having no holes are arranged in the same way below them and a fixed damper 6 such as a spring, etc., is provided on a bottom for emergency. Accordingly, the falling specimen (payload) 2 gradually receives a gradually growing frictional resistance successively from the elastic plate members 3, 3', and its falling energy is effectively absorbed to be stopped. In an emergency, it stops by the aid of the elastic plate members 5, 5'... and the fixed damper 6 and safety may be secured. Therefore, the falling energy of the experimental specimen is not drastically absorbed to be surely stopped.