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ZHAO Hongqiang
LI Meixiang
GAO Bin
HE Qinghua
College of Mechanical and Electrical
Engineering,
Central South University,
Changsha 410083, China |
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GAS AND OIL POWER DISTRIBUTION RATIO
OF A NEW HYDRAULIC BREAKER*
Abstract:
The working principle of a new hydraulic breaker operated jointly by gas and hydraulic flow which has a reasonable structure, high efficiency and long piston life-span, is analyzed, and the optimal power distribution ratio of the sealed nitrogen gas to the high-pressure oil in the process of piston impacting is studied. Through theoretical analysis, optimization simulation and detailed calculation, it is determined that the impact system has optimal mechanical performance and highest efficiency when the distribution ratio f is between 0.3 and 0.5. The theoretical result is also verified by repeated tests.
Key words:
Hydraulic breaker Power Distribution ratio Efficiency |