| China is the world’s most earthquake-hit countries in the20th century。Thenumber of deaths due to the earthquake accounted for49%of the world. Therefore,the development of applicable characteristics of China earthquake rescue equipmenthas become an important issue. Wenchuan earthquake rescue experience shows thatsmall specialized rescue equipments become the most effective way to breakmultilayer brick and frame structure. With the increase of high-rise concrete frameand shear wall structure, rescue of survivors in the hole formed after the collapse ofsuch buildings will become one of the major tasks after the earthquake.The traditional rescue equipment such as impact drill, chain saws and toothlesssaws are is hand operated. Not only is the efficiency low, but also the operatorexposure to the frequent aftershocks environment, threatened with death at anytime. Therefore, it makes important practical significance to develop fast and efficient,portable, telecontroled rescue robots. This paper conducted a preliminary study, themain work is as follows:The idea of enveloping a circle channel with impact drills is proposed and it isverified in the2-DOF rotary and translational platform. The idea of designingtelecontrol portable fast rescue system is proposed. With the system, concrete andsteel bar can be broken separately with impact drills and diamond drill, and basing onanalyzing vibration signal crushing speed can be adjusted and the steel bar can bedetected in real time. Besides, a3D solid model is designed.Based on finite element modeling and parameter identification tests, thedamping spring parameters are determined. Dynamic and inherent characteristics ofthe test platform systems were studied. On this basis, Vibration characteristics ofimpact drill in different states were studied. The foundation for the development offast rescue robot with above features is established. |
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