• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The intention is to be able to reduce the wear and permit easier starting. The percussion apparatus has a housing (1) to which a tool can be fastened. A piston (27) with a head (4) is axially movable in a reciprocating manner in a cylinder space in the housing. A sleeve-shaped, axially movable control valve (7) concentrically encloses the piston in such a way that the cylindrical inner face forms a cylindrical wall of the cylinder space surrounding the head. A front chamber (8) is formed in the cylinder space on the percussion side of the head. The front chamber (8) is separated from the control-valve space (6) of the control valve by a housing shoulder (28) surrounding the head. There is a passage (13) in the cylindrical surface of the head in order to produce a pressure-fluid connection between the front chamber and the control-valve space at the level of the end of the percussion movement of the piston. On the other hand, the pressure-fluid connection is interrupted near the end of the stroke movement of the piston (27) by the head (4) and by the shoulder (28). The pressure fluid required for the control of the control valve (7) can thus be obtained in a simple manner from the front chamber (8) of the cylinder space through the passage (13) in the piston head. <IMAGE>
    公开号:SU776569A3
    申请号:SU752127440
    申请日:1975-04-24
    公开日:1980-10-30
    发明作者:Салми Пекка；Раунио Пентти
    申请人:Ой Тампелла Аб (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the mining industry and can be used in shock devices.
    Known percussion devices containing a housing with a drummer located therein, performing reciprocating movement under the action of an energy carrier entering the device through a distribution element 10 [1].
    Closest to the invention, the achievable result is, in technical essence, a hydraulic impact device comprising a housing in which a step striker is located, made with grooves on its piston. parts and making a reciprocating movement under the action of 20 working fluid of the forward and reverse chambers for striking the working tool, and a control valve installed with the possibility of axial movement on the 25th piston part of the hammer and made with channels in its body ^ 2 ^ ·
    Difficulties in the operation of a known percussion device controlled by fluid pressure causes a harmful health effect from the abrasion of the percussion end of the piston during the operation of the percussion device. In addition, there are difficulties in starting up, as well as structural complexity related to the part of the control valve. All this reduces the reliability of the device.
    The aim of the invention is to increase. operational reliability of the device.
    To achieve this goal, the device housing has an annular protrusion, which forms an annular cavity with a distribution valve and drummer, periodically communicated with the back-up chamber through grooves of the piston part of the Drummer. .
    In FIG. 1 shows a striking device in section, the striker is in its lower position (end of the stroke); in FIG. 2 - the same, drummer. located at the beginning of the stroke.
    The device comprises a housing 1, in which a tool 2 is fixed. A step drummer 3 having a piston cylindrical part (piston) 4 on which grooves 5 are made is mounted in the housing bore with the possibility of axial reciprocating movement.
    The device has a forward camera 6 and a reverse camera 7.
    Control valve 8 mouth. updated on the piston part 4 of the drummer 3 with the possibility of axial movement d / made with channels 9 and 10, which are periodically located opposite the channels 11 and 12, constantly in communication with the drain channel 13.
    The supply of working fluid to the device was carried out by means of a pressure channel 14 having branches 15 and 16.
    The channels 13 and 14 at the outlet and inlet have a fitting 17 and 18, respectively.
    The drummer 3 in its tail has a protrusion 19.
    The forward-flow chamber 6 communicates with the pressure channel 14 through the space 20 and the channel 21, which is made in the housing 1 and through the annular channel, above the valve 8, when the valve 8 is in the lower position (Fig. 2).
    In channels 13 and 14, batteries 22 are installed.
    The dimensions of the upper and lower ends 23 and 24. of the distribution valve 8 are such that, when the supplied pressure is equal to them, the valve moves upward, i.e. the surface of the lower end 23 is larger than the surface of the upper end 24.
    An annular 35 protrusion 25 is made in the housing 1, which forms with the valve 8 and the piston part 4 an annular cavity 26 periodically connected to the back-up chamber 7 by means of grooves 5.
    ': The control valve 8 stops - 40 stops in the upper position with the help of Damping chamber 27.
    In the absence of tool 2, the hammer stops in the damping chamber 28. 45
    The flushing fluid is supplied through the nozzle 29 and the channel made in the body of the hammer 3 and tool 2 (not shown in the drawing) .Λ ··· Λ · 50
    In FIG. Figure 1 shows the position where drummer 3 has just made a hit and begins to reverse. The distribution valve 8 is in its upper position and stopped by the liquid of the damping chamber 27. The pressure from the pressure channel 14 to the forward chamber 6 is not transmitted, since the channel 21 is closed by the protrusion 19 and the valve 8 is located in the upper one (according to the drawing) position, and 60 the output through channel 9 and channel 12 is open.
    'The pressure force of the working fluid in the chamber 7 on the piston 4 makes it move up. In this case, the annular cavity 26 communicates with the reverse chamber 7 by means of grooves in the piston 4.
    First, the hammer 3 accelerates, since the working fluid from the chamber 6 flows through channels 9 and 12 to the drain channel 13. Then the acceleration decreases and, finally, the hammer 3 begins to slow down when the piston 4 begins to throttle the fluid flow into channel 12, while 10 The division in the chamber 6 begins to increase.
    In order to prevent an excessive increase in pressure in the system of the percussion device, the protrusion 19 of the striker opens the channel 21, connecting the chamber b with the channel 14 a little earlier than the piston 4 completely blocks the communication of the chamber 6 with the channel 12. When the channel 12 is closed, the movement of the hammer 3 is slowed down. 20 The liquid now flows out through the channel 21 to the pressure channel 14 and is directed through the accumulator 22. When the hammer 3 is in its highest position, the message of the annular 2 <j of the cavity 26 with the reverse chamber is blocked by the piston 4.
    In FIG. 2 strike 3 is ready to begin its downward movement. Switchgear 30, the valve 8 is stopped in its lowest position. When the piston 4 moves downward, a little earlier than it hits the tool 2, it ensures that the chamber 7 communicates through the grooves 5 with the annular cavity 26. In this cavity, the pressure increases and the control valve 8 moves up. After striking the tool 2, the message between the channel 14 and the forward camera 6 is blocked and the channel 9 is located opposite the channel 12. The distribution valve 8 is stopped By means of the damping chamber 27 in the position shown in figure 1.
    Next, the cycle repeats.
    权利要求:
    Claims (2)
    [1]
    1. Patent of Finland india t8423, cl. In 25 D 9/14, published 1974.
    [2]
    2.Patent of Great Britain No. 1125755, cl. In 4 C, pub. 1968 (prototype).
    ie tf rh at / /// / p // // W: / at 7 // / / / © L W 7 / IlL Zf / 5 13 7
    类似技术:
    公开号 | 公开日 | 专利标题
    SU845796A3|1981-07-07|Shocking hydraulic device
    SU776569A3|1980-10-30|Hydraulic shocking device
    RU2623159C1|2017-06-27|Hydraulic hammer
    SU848615A1|1981-07-23|Pneumatic percussive mechanism
    SU998740A2|1983-02-23|Pneumatic percussive mechanism
    SU1271966A1|1986-11-23|Hydropneumatic percussive device
    SU1002564A1|1983-03-07|Hydraulic percussive device
    SU1406363A1|1988-06-30|Percussive device
    SU928860A1|1984-07-23|Hydraulic percussive mechanism
    SU1051258A1|1983-10-30|Positive displacement hydraulic percussive mechanism of drilling machine
    SU831950A1|1981-05-23|Hydro-percussive earth-drilling machine
    SU1596105A1|1990-09-30|Percussive device
    SU1506102A1|1989-09-07|Hydraulic percussive mechanism
    SU941566A1|1982-07-07|Hydraulic percussive device
    SU1044058A1|1984-08-15|Hydropneumatic percussion device
    RU1793049C|1993-02-07|Hydraulic ram impact machine
    SU977760A1|1982-11-30|Deep well pneumatic hammer drill for wells
    SU1493778A1|1989-07-15|Percussive device
    RU2104148C1|1998-02-10|Hydraulic hammer
    RU1798164C|1993-02-28|Hydraulic percussion mechanism
    SU1677294A1|1991-09-15|Hydraulic percussive tool
    SU863854A1|1981-09-15|Hydraulic-percussive device
    SU685819A1|1979-09-15|Hydraulic shock apparatus
    SU1327029A1|1987-07-30|Source of vibrations
    SU1350257A1|1987-11-07|Hydraulic percussive mechanism
    同族专利:
    公开号 | 公开日
    ATA285875A|1977-04-15|
    DE2516546C2|1982-07-29|
    AT340347B|1977-12-12|
    FI50940C|1976-09-10|
    ZA752372B|1976-03-31|
    IT1037190B|1979-11-10|
    FR2268602B1|1982-02-19|
    ZA752371B|1976-03-31|
    JPS554554B2|1980-01-30|
    SE423686B|1982-05-24|
    AT340346B|1977-12-12|
    CH626823A5|1981-12-15|
    CS181292B2|1978-03-31|
    NO137349B|1977-11-07|
    FI126774A|1975-10-26|
    SE7504591L|1975-10-26|
    JPS50144967A|1975-11-21|
    ATA285975A|1977-04-15|
    DE2516546A1|1975-11-20|
    NO137349C|1978-02-22|
    AU7993475A|1976-10-14|
    FI50940B|1976-05-31|
    FR2268602A1|1975-11-21|
    NO751476L|1975-10-28|
    GB1478435A|1977-06-29|
    RO74260A|1980-10-30|
    PL113145B1|1980-11-29|
    PL94933B1|1977-09-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2906244A|1958-02-24|1959-09-29|Sheldon L Christensen|Hydraulic pavement breaker|
    DE1281370B|1963-09-06|1968-10-24|Krupp Gmbh|Impact device with hydraulically reciprocating pistons|
    GB1125755A|1965-04-23|1968-08-28|Vickers Ltd|Improvements in or relating to hydraulically operated tools|
    DE1703753A1|1968-07-05|1972-02-24|Ingbuero Dipl Ing Friedrich He|Hydraulically operated impact device|
    US3796050A|1972-05-18|1974-03-12|Foster Miller Ass|High energy rate actuator|FI56430C|1975-10-20|1982-08-09|Tampella Oy Ab|SLAGANORDNING DRIVEN AV EN TRYCKVAETSKA|
    US4062411A|1975-12-05|1977-12-13|Gardner-Denver Company|Hydraulic percussion tool with impact blow and frequency control|
    US4298074A|1976-08-09|1981-11-03|American Safety Equipment Corporation|Surgical device using impulse motor|
    DE2654875A1|1976-12-03|1978-06-08|Hausherr & Soehne Maschf|DEVICE FOR AUTOMATICALLY STOPPING A PRESSURIZED IMPACT DEVICE|
    GB1556754A|1976-12-10|1979-11-28|Af Hydraulics|Hydraulically-actuated percussive device with overstroke damping|
    SU745670A1|1977-01-04|1980-07-07|Институт Горного Дела Со Ан Ссср|Air-distributing device of impact-action pneumatic machines|
    ES469097A1|1978-03-31|1980-06-16|Crespo Jose T G|Hydraulic apparatus for producing impacts|
    DE3015696A1|1980-04-24|1981-10-29|Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter|HYRAULIC DRIVING DEVICE FOR A DRIVING TOOL|
    WO1992001138A1|1990-07-12|1992-01-23|G-Drill Ab|Hydraulic down-the-hole rock drill|
    SE528033C2|2004-03-12|2006-08-15|Atlas Copco Constr Tools Ab|Hydraulic hammer|
    FI124781B|2009-03-26|2015-01-30|Sandvik Mining & Constr Oy|Type of device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI741267A|FI50940C|1974-04-25|1974-04-25|Percussion device driven by a pressure fluid|
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