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    ENSEMBLE PNEUMATIQUE POUR INSTALLATION DE DESSABLAGE DES NOYAUX DE FONDERIE
    5.
    发明公开
    ENSEMBLE PNEUMATIQUE POUR INSTALLATION DE DESSABLAGE DES NOYAUX DE FONDERIE 有权
    AIR安排一个安装系统反吹铸芯的目的而使用

    公开(公告)号：EP1901882A1

    公开(公告)日：2008-03-26

    申请号：EP06778803.4

    申请日：2006-07-06

    申请人： Les Outils Pneumatiques Globe

    发明人： PHAM DINH, Vi

    IPC分类号： B25D9/20 ,  B25D17/22 ,  B23Q17/00 ,  B25D17/06

    CPC分类号： B22D29/005 ,  B25D9/20 ,  B25D17/06 ,  B25D17/22 ,  B25D2209/005 ,  B25D2216/0015 ,  B25D2250/101 ,  B25D2250/221

    摘要： The invention relates to a device for the blast cleaning of foundry cores. The inventive device consists of: a shaft (1) comprising first compressed air inlet means (20) and pulsed air outlet means (25); an approach cylinder (3) which slides inside the shaft, under the action of the compressed air, between a retracted position and a working position in which a punch (5) is in contact with a workpiece; and striking means (50) which subject the punch to repeated impacts. The device also comprises: means (219) for sealing the air outlet means, which can inhibit the striking means as the approach cylinder moves from the retracted position to the working position thereof; and timing means (225) for opening the sealing means at the end of a pre-determined period of time following a determined event.

    DISPOSITIF DE REGULATION DE PRESSION POUR APPAREIL HYDRAULIQUE A PERCUSSION
    6.
    发明公开
    DISPOSITIF DE REGULATION DE PRESSION POUR APPAREIL HYDRAULIQUE A PERCUSSION 有权
    压力控制装置的液压避震装置

    公开(公告)号：EP1691953A1

    公开(公告)日：2006-08-23

    申请号：EP04805618.8

    申请日：2004-12-02

    申请人： Montabert S.A.

    发明人： COMARMOND, Jean-Sylvain

    IPC分类号： B25D9/26 ,  B25D9/20 ,  B25D9/14

    CPC分类号： B25D9/26 ,  B25D9/145 ,  B25D9/20

    摘要： A percussive apparatus comprises a body (2) inside of which a striking piston (4) is mounted in a cylinder bore (3). Two axially offset pieces (17, 18) are mounted inside the cylinder bore (3) of the body while being concentric to the piston, and a deformable washer (19) is placed between said pieces. One of the pieces (17) is stationary with regard to the other piece (18) that, however, is mounted in a manner that enables it to slide inside the cylinder bore and to be displaced in the direction of the stationary piece while being subjected to the action of the supply pressure of the hydraulic fluid that acts upon the surface of the moving piece (18) facing away from the side opposite the stationary piece (17). This displacement of the moving piece (18) causes the elastic washer (19) to deform in order to create a passage with a variable cross-section on the return circuit (15) of the hydraulic fluid to the reservoir or on a circuit that diverts, to the return circuit, a portion of the delivery flow of the apparatus whereby regulating the input pressure.

    LINERBOLT REMOVAL TOOL
    7.
    发明公开
    LINERBOLT REMOVAL TOOL 有权
    工具拆卸衬砌锚杆

    公开(公告)号：EP1385673A1

    公开(公告)日：2004-02-04

    申请号：EP02713936.9

    申请日：2002-04-09

    申请人： RME Holdings Pty Limited

    发明人： RUBIE, Peter, John

    IPC分类号： B25D9/04 ,  B25D9/20 ,  B23P19/06

    CPC分类号： B25B27/026 ,  B25B27/02 ,  B25B27/04

    摘要： A pneumatic linerbolt removing tool including a moil supported for reciprocal movement along a hammer axis within a housing, an inertial body movably mounted along said hammer axis, and a piston assembly moveable within said inertial body along the hammer axis between a striking position at which it strikes the moil and a retracted position remote therefrom. The tool further including a gas-charged accumulator for urging said piston toward the moil and air supply means to a cylinder adapted to urge a biasing piston on the inertial body relative to the housing and toward said moil. The inertial body being ported so that working air is supplied to a front face of the piston assembly to urge it to a coked position away from the moil and whereby the accumulator is in its compressed state, and selectively operable porting means for equalizing pressure between the front and rear faces of the piston, to continuously allow transfer of air between said faces while in operation.

    Control device for slide valves in oil-operated hammers
    9.
    发明公开
    Control device for slide valves in oil-operated hammers 失效
    操作人员的滑阀控制装置

    公开(公告)号：EP0408517A3

    公开(公告)日：1991-06-05

    申请号：EP90830180.7

    申请日：1990-04-27

    申请人： ROTAIR S.P.A.

    发明人： Damiano, Renato

    IPC分类号： B25D9/20

    CPC分类号： B25D9/145

    摘要： In an oil-operated hammer (2) the movement of the striking mass (9) is controlled by a distributor (24) guided within a valve body (15) provided with delivery ports (16) to which oil under pressure is send and exhaust ports (17) communicating with the oil exhaust circuit. The distributor (24) is movable from an opened position in which the delivery ports (16) are uncovered to allow the entrance of oil under pressure thrusting the striking mass (9) towards a striking position, to a closed position in which the exhaust ports (17) are uncovered to let the oil outflow during the displacement of the mass (9) to the return position. The starting displacement of the distributor (24) to the opened position is caused by the pumping produced by the striking mass (9) as a result of the exhaust ports (17) being covered by the striking mass itself when the latter is about to reach its return position.