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１密封型式目前液压冲击破碎类机械的冲击锤密封有采用Ｙ_ｘ形聚氨脂密封圈和Ｏ形密封圈的。由于液压冲击锤的运动工况不同于一般的液压缸活塞杆，其频率和线速率都高于一般的液压缸活塞杆，因而将液压缸活塞杆密封移植到液压冲击锤上来显然是不合适的。作者在液压冲击类机械的
1 Seal Types The hammers used for hydraulic impact crushing machines are sealed with Y_x polyurethane seals and O-ring seals. Because the hydraulic hammer is different from the normal hydraulic cylinder piston rod, its frequency and line speed are higher than the general hydraulic cylinder piston rod, so it is obviously not suitable to transplant the hydraulic cylinder piston rod seal onto the hydraulic impact hammer. . Authors in hydraulic impact machinery