公开(公告)号：US20100193211A1

公开(公告)日：2010-08-05

申请号：US12697075

申请日：2010-01-29

申请人： Alexander JOHN ,  Reinhard Schulz ,  Eduard Pfeiffer

发明人： Alexander JOHN ,  Reinhard Schulz ,  Eduard Pfeiffer

IPC分类号： B25D11/06

CPC分类号： B25D17/06 ,  B25D11/125 ,  B25D2250/065

摘要： A pneumatic hammer mechanism is disclosed. The hammer mechanism includes: a flying mass; an impact surface which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston which limits a movement of the flying mass opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; and a drive for periodically moving the hammer piston with a stroke along the impact axis. The following inequality applies for the mass (m2) of the flying mass, a cross-sectional area (A) of the pneumatic chamber, the maximum length (L) of the pneumatic chamber, the stroke (H) of the hammer piston and an impact coefficient (q), if the hammer mechanism has an impact frequency (f) during percussive operation: L κ 2  ( L - H ) κ · κ L - H + ( L κ 2  ( L - H ) κ - 1 ) · 1 - q q  N 2  π   H  ≥ !  m 2 A · p 0 · N 2  f 2 where the parameter N is at least 4, po designates the ambient pressure and κ the isentropic coefficient of gas in the pneumatic chamber.

摘要翻译： 公开了一种气动锤机构。 锤击机构包括：飞行块; 撞击表面，其限制飞行质量沿冲击轴线在冲击方向上的运动; 锤击活塞，其限制飞行物体与冲击方向相反的运动; 飞行质量块和锤式活塞之间的气动室; 以及用于沿击球轴线周期性地移动锤式活塞的行程。 以下不等式适用于飞行质量的质量（m2），气动室的横截面积（A），气动室的最大长度（L），锤式活塞的行程（H）和 冲击系数（q），如果锤击机构在冲击操作期间具有冲击频率（f）：L＆kgr; 2（L-H）＆kgr; ·＆kgr L-H +（L＆Kgr; 2（L-H）＆kgr; - 1）·1 - q q N 2＆pgr ！ㄧ m 2 A·p 0·N 2 f 2其中参数N至少为4，po表示环境压力和kgr; 气动室中气体的等熵系数。

公开(公告)号：US20100224383A1

公开(公告)日：2010-09-09

申请号：US12697051

申请日：2010-01-29

申请人： Alexander JOHN ,  Reinhard SCHULZ ,  Eduard PFEIFFER

发明人： Alexander JOHN ,  Reinhard SCHULZ ,  Eduard PFEIFFER

IPC分类号： B25D11/06

CPC分类号： B25D11/125 ,  B25D2250/245

摘要： A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; and a drive for periodically moving the hammer piston with a stroke along the impact axis. The flying mass is excited to a periodic movement between the impact surface and a minimum approach of the hammer piston. A length ratio of the maximum length of the pneumatic chamber to the stroke is selected as less than 1.55.

摘要翻译： 公开了一种气动锤机构。 锤子机构具有：可沿着冲击轴线移动的飞行质量块; 撞击表面，其限制飞行质量沿冲击轴线在冲击方向上的运动; 一个锤子活塞，其限制飞行质量块沿冲击轴线与冲击方向相反的运动; 飞行质量块和锤式活塞之间的气动室; 以及用于沿击球轴线周期性地移动锤式活塞的行程。 飞行质量被激发到冲击表面和锤式活塞的最小接近之间的周期性运动。 气动室的最大长度与行程的长度比选择为小于1.55。

公开(公告)号：US20100224380A1

公开(公告)日：2010-09-09

申请号：US12697066

申请日：2010-01-29

申请人： Alexander JOHN ,  Reinhard Schulz ,  Eduard Pfeiffer

发明人： Alexander JOHN ,  Reinhard Schulz ,  Eduard Pfeiffer

IPC分类号： B25D11/06

CPC分类号： B25D11/125 ,  B25D11/005 ,  B25D2250/245

摘要： A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; a drive for periodically moving the hammer piston with a stroke along the impact axis, wherein the flying mass is excited to a periodic movement between the impact surface and hammer piston. The stroke is selected as a function of a maximum length of the pneumatic chamber such that the periodic movement of the flying mass on the path between an impact on the impact surface and a minimum approach of the hammer piston intermittently has a velocity of zero.

摘要翻译： 公开了一种气动锤机构。 锤子机构具有：可沿着冲击轴线移动的飞行质量块; 撞击表面，其限制飞行质量沿冲击轴线在冲击方向上的运动; 一个锤子活塞，其限制飞行质量块沿冲击轴线与冲击方向相反的运动; 飞行质量块和锤式活塞之间的气动室; 驱动器，用于沿着冲击轴线周期性地移动锤子活塞，其中飞行质量被激发以在冲击表面和锤形活塞之间的周期性运动。 作为气动室的最大长度的函数来选择行程，使得飞行质量在冲击表面上的冲击和锤式活塞的最小接近之间的路径上的周期性运动具有零速度。