Development of a Hydraulic Driven Soil Bin Test Device (II)

Instrumentation Car, Its Dynamic Characteristics and Safty Devices

Abstract

Design of the instrumentation car and its vibration analysis were mainly reported in this paper.
1) The dimensions of the instrumentation car have been determined through strength-rigidity calculations. 16 rubber wheels were used so that the transmitted vibrations to the instrumentation car could be reduced to the minimum.
2) Assuming 1 or 2 degrees of freedom for the vibration system of the two test cars which are spring-hitched each other and forced by frictions, the vibration analysis was performed. A spring hitch which reduced the vibration to the minimum was desiged through this analysis. The analytical solutions agreed well with the test results in the low frequency range of under 30Hz.
3) An emergency brake which was actuated by a coil spring in a hydraulic cylinder proved to be effective. A stopper device for emergency was designed for low speed range of under 2.5m/sec.