• 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:
    1478434 Percussive drills TAMPELLA AB OY 10 April 1975 [25 April 1974 17 Feb 1975] 14877/75 Heading B4C An hydraulic percussive drill comprises a body 1 and piston assembly 27 with a concentric valve 7 which is movable from a position in which it closes a pressure fluid inlet 9 to a chamber 10 to a position in which it closes the inlet, said valve and piston co-operating to open and close an outlet 11a, and the piston assembly 27 being provided with a cylindrical member 33 which allows a channel 26 to open into the chamber 10 when the outlet 11a is closed, which occurs when the piston and valve are in their extreme right hand position in the figure. A chamber 8 is provided to drive the piston to the right when pressure fluid is introduced and cushioning is provided in the usual way by spaces 6, 17 and 21. Pressure accumulators 19 are provided and a central flushing bore is provided through the piston and has a connector 23.
    公开号:SU845796A3
    申请号:SU752129162
    申请日:1975-04-24
    公开日:1981-07-07
    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, namely to devices designed primarily for rock drilling and operating from a fluid medium, for example a liquid. Known percussion devices containing the body and moved in it under the action of the energy of the drummer flj. .. The closest in technical essence and the achieved result to the invention is a hydraulic percussion device comprising a housing in which a stepped impactor is placed, performing axial reciprocating movement under the action of fluid from working chambers entering them through pressure and drain channels, and having an elongated tail section and a piston with a dispensing valve mounted on it that is movable with a drain channel in its body, and tool 2. .. One of the abundance of known devices is the difficulty undertaken in the years mutual synchronization of a ceremony. Distributor valve valves. In cases where they control the discharge of the working fluid from the cylindrical chamber to the output channel and the flow of fluid into the cylindrical chamber, which reduces the reliability of the device. The aim of the invention is to increase the operational reliability of the device. This goal is achieved because an annular protrusion is made on the tail end of the striker to periodically open the pressure channel of the device into the working stroke chamber, while at the top of the distribution valve the distance from the piston piston to its protrusion is more than the distance from the valve drain channel to pressure channel, opened, the projection of the drummer. FIG. 1 schematically shows the proposed hydraulic DEVICE, the moment when the drummer is found at the end of the working stroke} in FIG. 2 the same, at the moment when the striker is at the beginning of the working stroke. . In the housing 1 of the device there is a step drummer 2 having a pore 3 and an elongated tail section with an annular protrusion 4. The working chambers are made in the device housing: the working chamber 5 and the reverse camera 6. During reciprocating movement, the impactor 2 strikes the tool 7 fixed in the housing 1. In the absence of the tool J, the impactor 2 stops by the pressure of the fluid in the damping chamber 8 by the closed piston 3 when it is in its lowest position (thereby the pressure in the damping chamber 8 rises high enough to stop the movement of the nickname strike 2). The chamber 9 at the annular protrusion 4 of the striker 2 communicates the chamber of working stroke 5 with the pressure head 10 by means of the channel 11 with the close approach of the piston 3 to its highest point. The flushing fluid pipe 12 passes through the percussion device and feeds it into the hole of the tool 7. The inlet pipe for supplying the working fluid to the device can be connected through the nozzle 13 to the pressure channel 10, and the outlet pipe can be connected through the nozzle 14 to the drain channel 15. The pressure channel 10 and the drain channel 15 have hydraulic accumulators 16 for balancing the pressure change of the working fluid. The pressure channel 10 is constantly in communication with the back-up chamber 6, and the control valve 17 with the working stroke chamber 5. The diameters of the impactor 2 are chosen so that the area of the lower part of the piston 3, which is constantly under the pressure of the working fluid, is less than the area of the upper part of the piston to which the working fluid exerts or does not exert pressure, depending on the position of the distribution valve 17 and the protrusion 4. When the chamber. 5, the working hammer 2 is moving down under the pressure of the working fluid. Similarly, when the chamber 5 is in communication with the drain channel, the drummer 2 moves upwards, i.e. the platoon of the impactor 2 is in progress. The sleeve-type dispensing valve 17 moves to the chamber 18 located in the housing 1 and separated from the return chamber 6 by an annular protrusion 19. With sufficient continuation of the striker 2 in the tool direction, the 7th part of the chamber 18 located under the control valve 17 communicates with the chamber return stroke in the groove channels 20, made on the piston 3. In the cushion of the distribution valve 17 there are windows 21 and a drain channel 22 located respectively opposite the drain channels 23 and 24 When the distribution valve 17 is high enough, as shown in FIG. 1, the working fluid can pass from the chamber 5 to the channel 15 through the drain channel 22 in the distribution valve 17. The upper end 25 of the distribution valve is then under the pressure of the working fluid. The dimensions of the upper 25 and lower 26 ends of the distribution valve 17 are such that when a part of the chamber 18, located below the distribution valve 17, communicates through the grooves 20 to the chamber 6 of the return stroke, which is constantly under the pressure of the working fluid, the force caused by the fluid pressure on the surface of the lower end 26 of the control valve 17 causes the valve to move upwards. That is, the area of the upper end 25 of the control valve 17 is less than the area of its lower end 26, and the pressure on both surfaces is the same. When the piston 3 of the striker 2 reaches almost the top return point, while the control valve 17 is in its upper position, the grooves 20 on the piston 3 communicate the camera of the control valve 17 to the drain channel 15 through the windows 21 in the control valve 17 and channel 23. Prior to this, the piston 3 closed the connection between the chamber 6 and the chamber 18 of the distribution valve 17 by means of a protrusion 19. When the chamber 18 of the distribution valve 17 communicates with the channel 23, the pressure in it drops, and therefore Rec 25 control valve 17 moves down. The distribution valve 17 stops in the upper position by the pressure of the fluid in the damping chamber 27. The distance from the piston 3 to the annular protrusion 4 of the striker 2 is greater than the distance from the drain channel 22 of the valve 17 to the pressure channel 11 .. This condition eliminates excessive pressure in the working stroke chamber 5. I, FIG. Figure 1 shows the attachment of the working elements in which the striker 2 has just struck a blow at tool 7 and begins the reverse movement. The dispensing valve 17 is in its highest position. The flow of working fluid from the pressure channel 10 into the chamber 5 is completely stopped, and its output in the drain channel 15 is open. in chamber 6, the drummer 2 is forced upward. The chamber 18 of the dispensing valve 17 communicates with the chamber 6 via the grooves 20.
    The reverse movement of the impactor 2 is first accelerated until the liquid from the chamber 5 leaves through the channels 22 and 24 into the drainage channel 15. Then the acceleration decreases and eventually the movement of the impactor 2 begins to slow down, while the upper end 28 of the piston 3 begins to limit the fluid flow through the channel 22, whereby the pressure in the chamber 5 begins to increase.
    In order to prevent the pressure from rising to a value greater than the average pressure in the entire system, the protrusion protrusion 4 opens the connection between chamber 5 and pressure channel 10 shortly before the piston 3 completely closes the communication of chamber 5 with channels 22 and 24. The above Communication with the pressure channel is reached when the lower end 29 of the protrusion 4 has passed the lower edge of the channel 11, and the above communication with the drain channel is stopped when the upper end 28 of the piston 3 reaches the upper side 1 of the drain channel 22. When the channel 24 is closed, stage The release of the working fluid from the chamber 5 into the drain channel 15 is completed and the speed of movement of the striker 2 decreases. The fluid displaced by the projectile 3 in the process of movement flows through the cana 11 into the pressure channel 10 and accumulates into the hydraulic accumulator 16..
    When the piston 3 moves upwards, the liquid must always be forced out of chamber 5.
    The flow of working fluid from chamber 5 into hydroaccumulator 16 through channels 11 and 10 begins shortly before the flow of fluid from chamber 5 into the drainage box stops.
    FIG. 2 drummer 2 is ready to start moving down. First, chamber 5 is filled through channel 11 and chamber 9 of the elongated end of the striker and at the same time through a circular channel open by a control valve 17.
    When the drummer 2 has moved down sufficiently, the lower end 29 of the protrusion 4 closes the communication between the chamber 5 and the pressure channel 10 through the cable 11. The distribution valve 17 is stopped by the damping chamber in its lowest position.
    When the impactor 2 moves downwards, it opens a connection between chamber 6 and chamber 18 of the control valve 17 through the grooves 20 just before the impactor 2 strikes instrument 7. The pressure in chamber 18 increases and causes valve 17 to move
    0 up. The communication between the pressure channel 10 and the chamber 5 is closed and the channel 2 is located opposite the outlet channel 24. The distribution valve 17 is stopped by the damping chamber
    5 27 in the position shown in FIG. one
    Then the cycle repeats.
    权利要求:
    Claims (2)
    [1]
    1. The patent of Finland india number 48423, cl. In 25 D 9/14, published 1974.
    [2]
    2. The UK patent 1125755 cl. In 4 C, pub. 1968 (prototype) 6 J fO 0 / S 6/7 5 27 / / / / fei // 8 3 2 29 // / ff ipifg. / ff
    e 3 fO 26 / d 20/7 5/9 21 22 2J 2 fug. 2/0 25 9 / // //
    类似技术:
    公开号 | 公开日 | 专利标题
    SU845796A3|1981-07-07|Shocking hydraulic device
    US4312412A|1982-01-26|Fluid operated rock drill hammer
    US7861641B2|2011-01-04|Impulse generator and method for impulse generation
    SU776569A3|1980-10-30|Hydraulic shocking device
    US4006665A|1977-02-08|Percussion tool
    US4530407A|1985-07-23|Fluid operated hammer
    US4534422A|1985-08-13|Fluid operated hammer
    US4248133A|1981-02-03|Impact mechanism
    SU1689605A1|1991-11-07|Pneumatic plunger
    KR100753929B1|2007-08-31|Percussion hydaulic apparatus
    EP0048142B1|1985-03-27|Fluid operated hammer
    SU1002564A1|1983-03-07|Hydraulic percussive device
    RU2013540C1|1994-05-30|Impact device
    SU1102928A1|1984-07-15|Hydraulic percussion mechanism
    RU2013541C1|1994-05-30|Hydraulic valveless impact device
    CN110439455B|2021-05-14|Working device of rock drilling equipment
    RU2278233C2|2006-06-20|Air hammer
    RU2104148C1|1998-02-10|Hydraulic hammer
    SU1086147A1|1984-04-15|Percussive hydraulic mechanism
    RU2042812C1|1995-08-27|Percussive device
    SU1740657A1|1992-06-15|Hammering device
    SU706527A1|1979-12-30|Percussive action hydraulic mechanism
    SU1273486A1|1986-11-30|Hydraulic striker
    SU1129341A1|1984-12-15|Percussive apparatus
    SU1263834A1|1986-10-15|Hydraulic percussive device
    同族专利:
    公开号 | 公开日
    DE2516810C3|1980-10-16|
    FR2268603B1|1978-09-01|
    DE2516810B2|1980-02-28|
    IT1037189B|1979-11-10|
    JPS5432991B2|1979-10-17|
    AU7993175A|1976-10-14|
    GB1478434A|1977-06-29|
    FI50941B|1976-05-31|
    SE7504592L|1975-10-27|
    US4028995A|1977-06-14|
    FI750425A|1975-10-26|
    NO137350C|1978-02-22|
    NO137350B|1977-11-07|
    CH590112A5|1977-07-29|
    CS208174B2|1981-08-31|
    FR2268603A1|1975-11-21|
    SE409428B|1979-08-20|
    FI50941C|1976-09-10|
    NO751477L|1975-10-28|
    JPS50144968A|1975-11-21|
    CA1027010A|1978-02-28|
    DE2516810A1|1975-11-20|
    RO74261A|1980-10-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2449882C2|2007-07-09|2012-05-10|КОНЕК с.р.о.|Hydraulic rock breaker|US707920A|1901-06-20|1902-08-26|Charles H Haeseler|Pneumatic hammer.|
    US1132649A|1913-01-06|1915-03-23|Benjamin Brazelle|Pneumatic tool.|
    US1593606A|1925-06-24|1926-07-27|Ingersoll Rand Co|Rock drill|
    US2906244A|1958-02-24|1959-09-29|Sheldon L Christensen|Hydraulic pavement breaker|US4062411A|1975-12-05|1977-12-13|Gardner-Denver Company|Hydraulic percussion tool with impact blow and frequency control|
    ZA764220B|1976-07-15|1978-02-22|Compair Sa Ltd|Improvements in or relating to hydraulically powered percussive apparatus|
    GB1556754A|1976-12-10|1979-11-28|Af Hydraulics|Hydraulically-actuated percussive device with overstroke damping|
    GB1538528A|1977-09-22|1979-01-17|Compair Constr Mining Ltd|Reciprocating hydraulic motors|
    FI60151C|1979-06-26|1981-12-10|Tampella Oy Ab|HYDRAULISK SLAGANORDNING|
    FI58675C|1979-06-26|1981-03-10|Tampella Oy Ab|HYDRAULIC BORRING|
    US4444274A|1980-08-29|1984-04-24|Maruzen Kogyo Company Limited|Liquid pressure striking device|
    GB2100364B|1981-04-23|1985-01-09|Musso Mario|A hydraulic percussive drill|
    FR2509652B1|1981-07-17|1984-04-20|Montabert Ets|
    JPS58140293U|1982-03-09|1983-09-21|
    GB8304691D0|1983-02-19|1983-03-23|Bsp Int Foundation|Valve|
    GB2141657A|1983-05-10|1985-01-03|Panther Equip Ltd|Improvements in hydraulically operated hammers|
    DE3400302C2|1984-01-03|1988-01-07|Mannesmann Ag, 4000 Duesseldorf, De|
    US5341723A|1993-04-20|1994-08-30|Michael Hung|Reciprocating pneumatic motor for hydraulics|
    US5626068A|1994-04-12|1997-05-06|White ManufacturingLimited|Hydraulic reciprocating mechanism|
    US5730230A|1995-08-15|1998-03-24|Sisler; John S.|Rotary percussion drill|
    AU729250B2|1995-10-16|2001-02-01|White ManufacturingLimited|Hydraulic reciprocating mechanism|
    SE522213C2|2000-05-31|2004-01-20|Morphic Technologies Ab|Hydraulic stroke / compression device|
    DE102005062777A1|2005-12-28|2007-07-05|Robert Bosch Gmbh|Striker for a striking mechanism|
    FI119398B|2006-12-21|2008-10-31|Sandvik Mining & Constr Oy|The impactor,|
    SE534794C2|2010-04-01|2011-12-27|Atlas Copco Rock Drills Ab|Hydraulic striking device, piston control, and drilling rig|
    KR101373544B1|2012-07-03|2014-03-25|이일재|Hitting body for hydraulic percussion apparatus|
    CN103726783A|2013-11-28|2014-04-16|江麓机电集团有限公司|Novel sleeve valve type hydraulic impacting mechanism|
    EP3023199B1|2014-11-20|2019-02-27|Sandvik Mining and Construction Oy|Percussion piston and method of use|
    MX2019000250A|2016-06-24|2019-10-09|Berry Metal Co|Pneumatic drilling 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|
    FI750425A|FI50941C|1974-04-25|1975-02-17|Impactor for pressurized fluid.|
    [返回顶部]