-
公开(公告)号：US3757875A
公开(公告)日：1973-09-11
申请号：US3757875D
申请日：1971-11-24
申请人： KENT AIR TOOL CO
发明人： GUNNING S
CPC分类号： B25D17/12 , E02F3/966 , Y10S173/02
摘要： A support by which a reciprocating air hammer of the type having an elongated body or barrel is pivotally supported on the bucket supporting boom arm of a conventional power shovel, is modified to enclose the hammer body and to muffle the air percussively discharged from the hammer body.
摘要翻译： 具有细长主体或筒体的类型的往复式气锤被枢转地支撑在常规铲土机的铲斗支撑臂上的支撑被改型以包围锤体并且将从锤体排出的空气吹扫 。
-
公开(公告)号：US3739862A
公开(公告)日：1973-06-19
申请号：US3739862D
申请日：1971-08-11
申请人： KENT AIR TOOL CO
发明人： GUNNING S
CPC分类号： B25D9/14
摘要： The hammer barrel is supported by a rear header and, in turn, supports a front header. A piston is reciprocated in the barrel under the control of a reversible kick valve. The piston drives a tappet and moil which are supported for reciprocation by the front header. The tappet is continually biased to full extended position by a metering cutt-off valve which is subject continually to live air and which can seat to cut off the air supply to the barrel and stop the hammer when the tappet is substantially fully extended. The metering cut-off valve controls the rate of flow of live air so as to prevent excessively violent responses of the piston thereto. The metering cut-off valve is mounted in, and guided by, an air inlet fitting, the two providing a sub-assembly which can be installed as a unit in the rear header of the barrel. An axially free floating rigid stainless steel rod constrains the metering cut-off valve and tappet to coaxial movement together in substantially fixed axially spaced relation and unseats the metering cut-off valve when the tappet is retracted rearwardly by forcing the moil against the work. One end of the rod abuts the metering cut-off valve and the other end abuts the tappet, but the rod is not fixedly attached to either. The rod is supported for axial reciprocation by a bore in the piston and by a fixed rear bushing in the barrel. A valve spool on the tappet closes a vent when the tappet is extended and opens the vent when the tappet is retracted, thereby controlling venting of the barrel bore.
摘要翻译： 锤筒由后头支撑，并且又支撑前头部。 活塞在可反转的启动阀的控制下在筒体中往复运动。 活塞驱动一个挺杆和马蹄，它们被前支架用于往复运动。 挺杆通过计量截止阀不断地偏压到完全伸出的位置，该计量截止阀连续地受到空气的活动，并且当挺杆基本上完全伸出时，该挺杆可以安置以切断气缸的空气供应并停止锤子。 计量截止阀控制空气的流动速率，以防止其活塞过度剧烈的反应。 计量截止阀安装在进气配件中并由进气口配件引导，两个提供了一个子组件，该组件可作为一个单元安装在机筒的后集管中。 轴向自由浮动的刚性不锈钢杆将计量截止阀和挺杆约束在基本上固定的轴向间隔关系的同轴运动，并且当挺杆通过迫使摩擦件抵抗工件而向后缩回时，使计量截止阀不套安。 杆的一端邻接计量截止阀，另一端邻接挺杆，但是杆不固定地连接到任一个。 杆被支撑以通过活塞中的孔和筒中的固定的后衬套轴向往复运动。 挺杆上的阀芯在挺杆延伸时封闭通风口，当挺杆缩回时打开通风口，从而控制机筒孔的通风。
-
搜索结果
2 条记录 (耗时 0.014 秒)
