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    • 2. 发明专利
    • Pressure fluid automatic switching device
    • JP3650031B2
    • 2005-05-18
    • JP2000610976
    • 1999-04-13
    • 光治 馬上拓也 馬上直之 馬上
    • 光治 馬上拓也 馬上直之 馬上
    • F15B11/15F15B13/04F15B13/042F16K31/122
    • F15B13/0426F15B11/15F15B13/0402Y10T137/2668Y10T137/86413
    • This invention relates to a device for automatically switching discharge of pressurized fluid from outlet ports. To be more specific, this invention relates to an automatic pressurized fluid switching device for performing a switching operation using the pressure of pressurized fluid in itself without using electrical elements. An object of the invention is to provide an automatic pressurized fluid switching device having an excellent switching performance without using an electrical element so as not to be complicated in structure. To attain the object according to the invention, there is provided an automatic pressurized fluid switching device comprising an inlet port for introducing pressurized fluid, a plurality of outlet ports for discharging the pressurized fluid, a switching valve disposed between the inlet port and the outlet ports for switching over the outlet ports, a pilot valve for piloting the switching operation of the switching valve, and a reaction member for controlling the pilot action of the pilot valve in response to the pressure of the pressurized fluid introduced, which is characterized in that the pilot valve is provided with a first pilot unit in which the pilot action of the pilot valve is controlled only by the reaction member, and a second pilot unit in which the pilot action of the pilot valve is controlled by the reaction member in its initial and final stages and directly by the pressurized fluid in its middle stage. According to the invention, two lineages of the pilot action of the pilot valve for piloting the switching action of the switching valve can be constituted. The lineages are formed of the pilot action controlled only by the reaction member in the first pilot unit and the pilot action controlled by both of the reaction member and the fluid in the second pilot unit. The pilot action in the second pilot unit is controlled by the reaction member in the initial and final stages and by the pressurized fluid in the middle stage. Consequently, the pilot action in the second pilot unit in the middle stage can be securely effected even when the pressurized fluid introduced thereinto is little at the time of being again operated after stopping at the intermediate point of the switching action. Thus, smooth switching action can be performed securely.
    • 6. 发明专利
    • Apparatus and method for machine digging of rock and concrete
    • JP2014513221A
    • 2014-05-29
    • JP2014503632
    • 2012-04-03
    • アトラス コプコ ロツク ドリルス アクチボラグ
    • ドンセ,レンナルト
    • E21B1/26
    • B25D9/125B25D9/04B25D9/12B25D9/14B25D9/145B25D9/18E21B1/02F15B11/15F15B2013/0412F15B2211/851
    • 本発明は、岩盤及びコンクリートの少なくとも一方の機械掘り用装置に用いられる液圧バルブレス衝撃機構に関するものであり、シリンダーボアを備えた機械ハウジング(105;205)と、シリンダーボア(115、215)内を動き、しかも動作中に機械ハウジングに対して反復往復動して岩盤及びコンクリートの少なくとも一方の機械掘り用装置に接続可能な工具に直接又は間接に衝撃を与えるように設けられたピストン(110;210)とを有し、ピストンが、第一の駆動チャンバー(160;260)及び第一の駆動チャンバーの容積より大きな有効容積をもつ第二の駆動チャンバー(125;225)を分割する駆動部(140;240)を備えている。 衝撃機構はさらに、衝撃機構の初期加圧中に短い持続時間の間、第二の駆動チャンバーと第一の駆動チャンバーとの間を接続させるように構成した始動手段を有し、第二の駆動チャンバーと第一の駆動チャンバーとの間を接続が、ピストンを自己振動に設定しかつ平衡位置にピストンが静止することになるのを避けるために、一つの完全な行程周期中そのままにできる。 さらに本発明は、液圧衝撃機構を有する削岩機、削岩機を有する削岩、並びに液圧バルブレス衝撃機構を始動する液圧解放バルブに関する。 本発明はさらにバルブレス型の液圧衝撃機構の始動方法に関する。
      【選択図】 図1
    • 8. 发明专利
    • Low energy/heat transfer sheath destruction system
    • 低能量/热传递管道破坏系统
    • JP2003028105A
    • 2003-01-29
    • JP2002132055
    • 2002-05-07
    • Ross Operating Valve Coロス オペレイテイング バルブ カンパニー
    • HORSTMANN THEODOR HFOSTER JOSEPH E JRRUSSELL NEIL E
    • F15B11/16C22B9/16C25C3/14F15B11/00F15B11/15F15B20/00F15B21/14F27D25/00F27D99/00
    • C25C3/14F15B11/15F15B15/225F15B20/00Y02P10/262
    • PROBLEM TO BE SOLVED: To provide a low energy/heat transfer sheath destruction system as improvement of a conventional pneumatic system in which a leak is generated inside the system, actuator must be kept in a stationary position in order to compensate the leak, and which involves costly wastefulness, particularly in terms of the use of energy, in order to maintain the controlling air pressure or flow of the whole fluid circuit of the system.
      SOLUTION: The pneumatic control system is to selectively control the motions of a pneumatic device between its first and second operating positions. The pneumatic device is composed of an actuation part and an air pressure control part. The air pressures control part is in communication with a pressurized fluid source and has a train of valves for selectively operating the actuation part between its first and second operating positions and also has a sensing system for keeping the actuation part in the static mode by further applying a system pressure to the actuation part. This eliminates necessity for application of the whole line pressure at all times, and a system with a higher energy efficiency can be established.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:为了提供低能量/传热护套破坏系统,作为在系统内部产生泄漏的传统气动系统的改进,致动器必须保持在静止位置以补偿泄漏,并且哪个 涉及昂贵的浪费,特别是在使用能量方面,以便保持系统的整个流体回路的控制空气压力或流量。 解决方案:气动控制系统可选择性地控制气动装置在其第一和第二操作位置之间的运动。 气动装置由致动部和空气压力控制部构成。 空气压力控制部分与加压流体源连通并且具有一系列阀,用于在其第一和第二操作位置之间选择性地操作致动部件,并且还具有用于通过进一步施加将致动部件保持在静止模式的感测系统 对致动部分的系统压力。 这消除了始终应用整个管线压力的必要性,并且可以建立具有更高能量效率的系统。