Study on Dynamic Characteristics of a Hydraulic Hammer

Hydraulic hammers are used widely now in construction fields such as road, civil engineering, port, and mines. How to design them optimally, and how to control their working and improve working efficiency are interested to many researchers and manufacturers. The dynamic characteristics of them will affect their performance and working efficiency. To investigate these problems and to improve efficiency of their analysis, the study is done based on the software ADAMS. According to working principle of a hydraulic hammer, a dynamic model of hydraulic system coupling with mechanical system is established in ADAMS/Hydraulics here. Some important and interesting phenomena, and especially its dynamic characteristics are found by study of piston motion, oil flow and accumulator pressure in the hydraulic system, and some important working parameters affecting the normal working of the hydraulic system are also found, which can be used to guide optimal design of hydraulic hammers.