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活塞经过钎杆至岩石的动能传递系数是冲击式机械效率的主要参数之一。此系数的值实际上取决于冲击应力波的形状。传递系数很小时,活塞的大部分能量消耗在钎杆的纵向振动上,引起很大的交变应力,而使钎杆很快损坏。活塞能量几乎全部传给岩石的冲击式机械,它的钎杆有很高的可靠性。产生冲击应力波的机械,它的冲击应力波的形状能保证有最大的动能传递系数时,这种机械是具有高生产效率并且是可靠的。
The kinetic energy transfer coefficient of the piston through the rod to the rock is one of the main parameters of the impact mechanical efficiency. The value of this factor actually depends on the shape of the impact stress wave. When the transmission coefficient is small, most of the energy of the piston is consumed in the longitudinal vibration of the rod, causing a great alternating stress, which causes the rod to be damaged rapidly. Piston energy is almost entirely passed to the rock impact machinery, its drill rod with high reliability. A machine that produces an impact stress wave whose shape of the impact stress wave ensures maximum kinetic energy transfer coefficients is mechanically productive and reliable.