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公开(公告)号：EP0048142A1
公开(公告)日：1982-03-24
申请号：EP81304169.6
申请日：1981-09-11
申请人： Rear, Ian Graeme
发明人： Rear, Ian Graeme
IPC分类号： E21B4/14
CPC分类号： E21B4/14
摘要： A fluid operated hammer comprising; a casing (11); a top sub (12) mounted to one end of the casing; a drill bit (13) mounted to the other end of the casing; a feed tube (20) located concentrically within the casing and extending for a portion of the length of the casing from said one end; and a piston (26) slidably mounted in the casing for longitudinal movement between the top sub and drill bit over said feed tube; said feed tube (20) being formed with at least one elongate aperture (24) wherein the longitudinal dimensions of said at least one aperture correspond to a significant proportion of the degree of reciprocation of said piston; a first passageway (29) provided in the piston and extending between the central bore and the external face thereof to provide a communication between the said at least one aperture and the space between the piston and the top sub when the piston is at or near the top sub and for a significant proportion of the degree of movement of the piston from the top sub to a drive the piston towards the other end of the casing; a rebate (25) formed in the internal face of the casing adjacent or near the other end; and a second passageway (30) in the piston and extending from the central bore thereof to the external face thereof to provide communication between said at least one aperture and said rebate when said piston is abutting said drill bit to admit fluid into the space between the piston and drill bit and drive the piston towards the one end.
摘要翻译： 一种流体操作锤，包括： 壳体（11）; 安装到所述壳体的一端的顶部副（12）; 安装到所述壳体的另一端的钻头（13）; 进料管（20），其同心地位于所述壳体内并且从所述一端延伸到所述壳体的所述长度的一部分; 以及可滑动地安装在所述壳体中的活塞（26），用于在所述进料管之间的顶部副钻头和钻头之间纵向运动; 所述进料管（20）形成有至少一个细长孔（24），其中所述至少一个孔的纵向尺寸对应于所述活塞的往复运动程度的很大比例; 设置在所述活塞中并在所述中心孔和其外表面之间延伸的第一通道（29），以在所述活塞处于或接近所述活塞时在所述至少一个孔和所述活塞与所述顶部副之间的空间之间提供连通 顶部和活塞从顶部的活动到驱动活塞朝向壳体的另一端的大部分移动程度; 形成在所述壳体的与所述另一端相邻或靠近的所述内表面上的回扣（25）; 以及活塞中的第二通道（30）并且从其中心孔延伸到其外表面，以在所述活塞邻接所述钻头以允许流体进入到所述第二通道之间的空间中时在所述至少一个孔和所述回扣之间提供连通 活塞和钻头，并将活塞朝向一端驱动。
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公开(公告)号：EP0040026A1
公开(公告)日：1981-11-18
申请号：EP81301919.7
申请日：1981-04-30
发明人： Cox, Nigel Bruce
IPC分类号： E21B4/14
CPC分类号： E21B4/14
摘要： A free piston machine of the valveless type using piston wall ports and cooperative flow passages in the cylinder wall for supplying live pressure fluid to the piston working chamber and for exhausting the power working chamber is characterised by an axial pressure fluid supply line (10) that enters and has open termination within a pressure recess (11, 11a) to cooperate therewith in accordance with the motion of the piston to control the flow of pressure fluid to the power working chamber of the machine. The supply line (10) may be fixed to the body of the machine and cooperate with a pressure recess (11) in the piston, or the supply line may be carried by the piston to move therewith and to cooperate with a pressure recess (11a) in the machine body.
摘要翻译： 一种使用活塞壁端口和气缸壁中的协同流动通道的空气活塞机，其用于向活塞工作室供应活力流体并排出动力工作室，其特征在于轴向压力流体供应管线（10），其包括： 在压力凹槽（11,11a）内进入并具有开口端接，以根据活塞的运动与其配合，以控制流到机器的动力工作室的压力流。 供应管线（10）可以固定到机器的主体上，与活塞中的压力凹部（11）配合，或者供应管线可以由活塞承载以与其一起移动并与压力凹部（11a ）在机身中。
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公开(公告)号：EP0022865A4
公开(公告)日：1981-01-28
申请号：EP79900104
申请日：1980-07-01
申请人： FURUKAWA KOGYO KK
发明人： MIKAMI YOSHIKAZU
摘要： A hydraulically driven downhole drill is provided with a drill connector (51) for simplifying both hydraulic circuits of a drill head (1) and a connecting rod (60) and adapting the hydraulic circuit arrangement of the drill head (1) with the other hydraulic circuit arrangement of the connecting rod (60). Use of this drill connector results in simplification of the circuit arrangement at the connecting portion between the drill head and connecting head. This downhole drill is further provided with an automatically-operated hydraulic pressure shut-off valve (65) at a connecting portion between the connecting rods (60) to prevent oil from leaking upon engagement and disengagement of the rods (60). The drill head (1) has a mechanism for reciprocating hydraulically a piston (8) controlled by a control valve (20) in the cylinder, and the piston (8) has a hydraulic circuit (50) for removing chips. The connecting rods (60) each have therein a high pressure hydraulic circuit (30) formed along the central axis, a low pressure hydraulic circuit (40) formed coaxially with the hydraulic circuit (30) around the outer periphery thereof, and pipes (61, 61a, 61b) including the hydraulic circuit (50) for removing chips. A pressure compensator can be mounted at the connecting portion of the drill head with the connecting rod and at the connecting portions of the connecting rods with each other.
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公开(公告)号：EP0022865A1
公开(公告)日：1981-01-28
申请号：EP79900104.5
申请日：1978-12-15
申请人： FURUKAWAKOGYO CO.LTD
发明人： MIKAMI, Yoshikazu
摘要： A down-the-hole drill of this type simplifies the construction and layout of fluid passages in a drillin head (1) and connecting rod (60), at the same time, it also simplifies the construction of the fluid passages at the junction of said drilling head (1) and connecting rod (60) by interposing therebetween a drill connection (51) which funs to change over the direction of the fluid flow so as to connect corresponding fluid passages in the two parts disposed in a manner different from the former to the latter, furthermore it enables prevention of oil leakage during the connection and disconnection of the segments of rod 160) from each other by providing an automatic oil shut-off or stop valve 1651 of the junction of the rod.
The drilling head (1) has a means for actuating reciprocal movement of a piston (8) by hydraulic power controlled by a directional control valve (20), within which piston (8) a pneumatic or hydraulic fluid passage (50) for discharging sludge is provided. The connecting rod (60) consists of pipes (61, 61a and 61 b) and comprises a high pressure oil passage (30) formed about the central axis, a low pressure oil passage (40) and a pneumatic or hydraulic passage (50) for discharging sludge which is formed on the outer periphery of the high pressure oil passage (30). This drill device may further comprise a pressure compensation device either at the connection between the drill head and rod or at the junction of the drill segments. (filed with the Japanese Patent Office with response to the Official communication under PCT Rule 38.2)摘要翻译： 这种类型的井下钻机简化了钻头（1）和连杆（60）中的流体通道的构造和布局，同时还简化了流体通道在 所述钻头（1）和连杆（60）之间插入钻头连接件（51），所述钻头连接件（51）用于改变流体流动的方向，从而连接以与所述钻头不同的方式设置的两个部件中的相应流体通道 前者到后者，此外，通过提供杆的接合处的自动油关闭或停止阀1651，其能够防止在杆160的节段的连接和断开期间相互之间的油泄漏。 钻头（1）具有用于通过由方向控制阀（20）控制的液压动力来致动活塞（8）的往复运动的装置，活塞（8）内设有用于排出污泥的气动或液压流体通道 被提供。 连杆60由管61,61a和61b组成，并且包括围绕中心轴线形成的高压油通道30，低压油通道40以及气动或液压通道50， 用于排出形成在高压油路（30）的外周上的污泥。 该钻探装置可以进一步包括压力补偿装置，该压力补偿装置位于钻头和杆之间的连接处或钻杆段的连接处。 （根据PCT细则第38.2条向日本专利局提交回应官方通讯）
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公开(公告)号：EP3710665B1
公开(公告)日：2023-12-06
申请号：EP18878333.6
申请日：2018-09-19
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公开(公告)号：EP4267832A1
公开(公告)日：2023-11-01
申请号：EP21933445.5
申请日：2021-03-25
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公开(公告)号：EP3899188B1
公开(公告)日：2023-09-13
申请号：EP19808818.9
申请日：2019-11-27
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公开(公告)号：EP3884135B1
公开(公告)日：2023-06-21
申请号：EP19808751.2
申请日：2019-11-20
发明人： PURCELL, Joseph
IPC分类号： E21B4/14 , E21B10/36 , E21B10/627
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