• 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:
    Slide valve (16) for a hydraulic percussion device (10), which slide valve (16) comprises a transition surface (18) that is arranged to alternately be subjected to a working pressure (20) and a tank pressure (22) to carry out a reciprocating movement when the percussion device (10) is in use. The slide valve (16) comprises at least one channel (24) which is open at one end (24a) of the slide valve (16), and at least one displaceable pin (26) that is arranged inside said at least one channel (24).
    公开号:SE1250136A1
    申请号:SE1250136
    申请日:2012-02-17
    公开日:2013-08-18
    发明作者:Anders Lundgren
    申请人:Atlas Copco Constr Tools Ab；
    IPC主号:
    专利说明:

    101520253035Tl 1002 / PS54406SEOOThe slide valve comprises at least one channel, i.e. one channel or several separate orinterconnected channels, which are open at one end of the slide valve, and at least onemovable stick, i.e. one or more separate or interconnected sticks, which isat least partially disposed within the at least one channel.
    According to an embodiment of the invention, the pins are arranged to be subjected to aworking pressure which presses one end of the pins against an immobile component of saidhydraulic percussion device, i.e. a component which is not arranged to move whenthe percussion device is in use, which gives a force in the opposite direction on the slide valve. Mentionedcomponent can, for example, be part of the machine housing or the accumulator housing.
    Such a slide valve shows better holding force due to a stick or a plurality of sticksstably holds the slide valve in place when the slide valve is mounted on a percussion device andthe percussion device is in use. The slide valve, for example, has flat surfaces at each end whichaxially seals against corresponding surfaces in the machine housing. Because the sticks are at leastpartially disposed in the slide valve itself, and not in the engine housing as in U.S. Pat. US4,142,447, a more compact solution is provided.
    The word "stick" as used in this document does not necessarily mean a narrow oneoblong component with the same cross section along its entire length, but refers to onecomponent which may have any design and which may have a uniform ornon-uniform cross-section along its length.
    According to another embodiment of the invention, the working pressure is substantially constantpressure, such as the working pressure of the percussion device.
    According to a further embodiment of the invention, the working pressure is provided with ahydraulic fluid. Alternatively, or in addition, the working pressure is provided with resilientmaterial, such as a spring.
    According to an embodiment of the invention, the slide valve is arranged to move between twoend positions when the percussion device is in use, and said at least one pin is arranged topress the slide valve against an immobile component of the hydraulic percussion device, such asthe machine housing (12), to provide a seat seal between said slide valve andsaid immobile component in both ends.101520253035Tl 1002 / PS54406SE00According to an embodiment of the invention, the slide valve constitutes a cylindrical sleeve.
    According to another embodiment of the invention, the slide valve has a plurality of different diameters,such as two or three different diameters to get a good force balance on the spool valve.
    According to an embodiment of the invention, a surface of said slide valve is arranged toexposed to tank pressure when the percussion device is in use.
    According to another embodiment of the invention, said at least one channel extends inaxial direction of the slide valve when the slide valve is mounted in a hydraulic percussion device.
    According to an embodiment of the invention, the channel (s) extend along at least20%, or at least 50%, preferably at least 60%, more preferably at least 70%, yetpreferably at least 80% or more of the length of the slide valve.
    According to an embodiment of the invention, the at least one channel is in fluid communication witha hydraulic fluid via at least one conduit arranged to extend in the slide valveradial direction when the slide valve is mounted in a hydraulic percussion device. The wireswhich connects said at least one channel with the hydraulic fluid can thus be arranged to bevery short, i.e. a few millimeters long.
    According to another embodiment of the invention, the slide valve contains a plurality of channelswhich are evenly distributed around its periphery / perimeter, for example symmetrically around oneimpact piston if the slide valve is arranged radially from the outside and around an impact piston.
    According to a further embodiment of the invention, the outer diameter of apin the inner diameter of a duct. The pins thus form a seal betweenthe working pressure duct and the tank pressure duct because very little, if any hydraulic fluidcan move past the sticks. It should be noted that the word "diameter" as used inthis document does not mean that a component is necessarily circular, but the word"diameter" also refers to the largest transverse dimension of a component.
    The present invention also relates to a percussion device which contains a slide valve according toany embodiment of the invention.1015202530TllO02 / PS54406SEOOAccording to another embodiment of the invention, the slide valve is arranged to be useda frequency of at least 10 Hz, or at least 50 Hz, preferably at least 60 Hz,preferably at least 70 Hz, even more preferably at least 80 Hz or higher.
    The present invention also relates to a method of bringing a slide valve into apercussion device, for example a slide valve according to any embodiment of the invention, thatperform a reciprocating motion when said percussion device is in use. The methodcomprises the step of alternately subjecting a changeover surface of the slide valve to a working pressureand tank pressure. The slide valve is arranged with at least one channel which is open at one end ofsaid slide valve, and at least one movable pin is arranged at least partially arrangedwithin said at least one channel.
    According to an embodiment of the invention, the at least one pin is subjected to a working pressurewhich presses one end of the pin against an immobile component of said hydraulicpercussion device.
    According to another embodiment of the invention, said working pressure is a substantial onepressure, working pressure.provided with a hydraulic fluid and / or a spring.constant as the said working pressure of the percussion device canBRIEF DESCRIPTION OF THE DRAWINGIn the following, the present invention will be described in more detail with referenceto the accompanying schematic drawings, in which:Figures 1 & 2 show a part of a percussion device according to an embodiment of the presentinvention, andFigure 3 shows a slide valve according to an embodiment of the present invention.
    It should be noted that the drawing is not necessarily to scale and that the dimensions ofsome details may have been exaggerated for the sake of clarity.1015202530Tl 1002 / PS54406SEOODETAILED DESCRIPTION OF EMBODIMENTSFigure 1 shows a part of a hydraulic fluid driven percussion device 10 according to an embodiment ofpresent invention. The percussion device 10 comprises a machine housing 12 which containsa percussion piston 14. The percussion piston 14 is arranged to perform a reciprocating movement,for example, with a frequency of 10Hz or higher, along its longitudinal axis L whenthe percussion device 10 is in use.
    The striking device 10 comprises a cylindrical slide valve 16 which comprises a changeover surface18 which is arranged to be exposed alternately via a signal channel 28 to the percussion deviceworking pressure 20 and tank pressure 22. The slide valve 16 comprises a plurality of channels 24 evenlydistributed around the periphery of the slide valve 16, which channels 24 extend along about 80% ofthe length of the slide valve 16. The channels 24 may, for example, be 20-50 mm long, preferably25-40 mm long. The channels 24 are open at a spirit 24a of the slide valve 16 and extendin the axial direction L of the slide valve at an angle of 90 ° from the end 24a of the slide valve. Onenumber of pins 26 are arranged inside the channels 24, one in each channel 24. The pins 26 aremovable and are arranged to extend out of the slide valve 16 in the illustratedembodiment.
    One end 26b of each pin 26 is subjected to a substantially constant operating pressure, for examplethe working pressure 20 of the percussion device to press the opposite end 26a of the pin 26 againstan immobile component 12 of the hydraulic percussion device 10, which provides a force to eatcorresponding pour on the slide valve 16. Alternatively, the pins 26 may be spring-loadedholding the slide valve 16 in place in its end positions,Figure 1 shows the slide valve 16 in its upper end position (moved to the right side in Figure 1).
    Impact tank 22.14 upper strut 30 is in fluid communication withThe working pressure channel 20 is in fluid communication with the upper end 26b of the pins but isof the slide valve 16 sealed against the upper stroke of the percussion piston 30. The pins 26, one end of which26a is pressed against the machine housing 12 and seals between the machine housing 12 and the slide valve 16,holds the slide valve 16 in place in its upper end position. The resulting force from the sticks26 on the slide valve 16 pushes the slide valve 16 against the machine housing 12 and provides an axialseat seal between the slide valve 16 and the machine housing 12. The seat seal surfaces 32 haveindicated in Figures 1-3.101520253035TllOOZ / PS54406SEOOThe adjustment surface 18 of the slide valve 16 is arranged to be larger than the total surface ofthe pins 26 so that when the adjustment surface 18 of the slide valve is subjected to a working pressure 20 fromsignal channel 28, the slide valve 16 is moved to its lower end position (towards the left side)as shown in Figure 2). When the slide valve adjustment surface 18 is subjected to a tank pressure 22 fromsignal channel 28, the slide valve 16 is moved again to its upper end position (towards the right side)as shown in Figure 1).
    Figure 2 shows the slide valve 16 in its lower end position (moved to the left side in Figure 2)against the machine housing 12. The upper impact chamber 30 of the percussion piston 14 is in fluid communication withworking pressure 20. The working pressure channel 20 is also in fluid communication with the upper end26b of the pins and pushes one end 26a of the pins 26 against the machine housing 12.
    The tank channel 22 is sealed by the slide valve 16 against the upper stroke space 30 of the percussion pistonposition when also here seat seal between the slide valve 16 and the machine housing 12.
    The pins 26 create a force one year to the right of the slide valve 16, which means that a seat seal is obtainedagainst the machine lift 12 when the slide valve 16 is in the right position, as shown in Figure 1.
    The signal pressure on the slide valve adjustment surface 18 provides a seat seal when the slide valve 16 is stationaryto the left position, as shown in Figure 2.
    Figure 3 shows a slide valve 16 according to an embodiment of the invention. The wear valve 16comprises a changeover surface 18, namely an edge where the outer diameter of the slide valve16 is changed from a larger diameter to a smaller diameter in the illustrated18 is thatthe working pressure 20 of the percussion device and the tank pressure 22 when the slide valve 16 is mounted on aembodiment. The adjustment surface arranged alternately is exposed topercussion device 10. The slide valve 16 comprises a plurality of channels 24 evenly distributed aroundthe periphery of the slide valve 16, which channels 24 are open at one end 24a and a number of pins 26which are arranged inside the channels 24. The pins 26 are pressurized by standing influid connection with pressurized hydraulic fluid, for example via connecting linesthe channels 24 with hydraulic fluid. The wires (not shown) can be arranged to extend inradial direction of the slide valve when the slide valve 16 is mounted on a percussion device 10.
    Figure 8 shows openings 20a which communicate with the operating pressure of the percussion device20. It should be noted that a pin 26 need not necessarily be provided in each channel 26at the wear valve.
    TllOOZ / PS54406SEOOSeveral modifications of the invention would be possible within the appended claimsscope of protection. For example, although the illustrated embodiments show a pluralityspaced apart channels 24 would be the slide valve 16 of the present inventionbe able to comprise a plurality of interconnected channels, all channels 24 being in fluidconnection to a working pressure (for example, the working pressure of the percussion device 20 or aseparate pressure cold) via a single opening 20a. Alternatively, or in addition, a plurality wouldpins 26 can be arranged as a single component pressurized by hydraulic fluid orresilient material.
    权利要求:
    Claims (20)
    [1]
    A slide valve (16) for a hydraulic percussion device (10), the slide valve (16) comprising a changeover surface (18) which is arranged to be alternately subjected to a working pressure (20) and a tank pressure (22) for performing a reciprocating motion. movement when the percussion device (10) is in use, characterized in that said slide valve (16) comprises at least one channel (24) open at one end (24a) of said slide valve (16), and at least one movable pin (26) which are at least partially disposed within said at least one channel (24).
    [2]
    Slide valve (16) according to claim 1, characterized in that said at least one pin (26) is arranged to be subjected to a working pressure which presses one end (26a) of the pins against an immobile component (12) of said hydraulic percussion device (10) , which gives a force to the corresponding pour on the slide valve (16).
    [3]
    Slide valve (16) according to claim 2, characterized in that said working pressure is a substantially constant pressure, like the working pressure (20) of the percussion device.
    [4]
    Slide valve (16) according to claim 2 or 3, characterized in that said working pressure is provided with a hydraulic fluid.
    [5]
    Vessel valve (16) according to claim 4, characterized in that said at least one channel (24) is in fluid communication with said hydraulic fluid via at least one conduit arranged to extend in the radial direction of said slide valve (16) when the slide valve is mounted in said slide valve. hydraulic percussion device (10).
    [6]
    Sheath valve (16) according to any one of the preceding claims, characterized in that said sheath valve (16) is arranged to move between two end positions when the percussion device (10) is in use, and said at least one pin (26) is arranged to push the sheath valve (16) against an immobile component of said hydraulic percussion device (10), such as the machine housing (12), to provide a seat seal between said slide valve (16) and said immobile component in both end positions,
    [7]
    Slide valve (16) according to any one of the preceding claims, characterized in that said working pressure is provided with resilient material, such as a spring. 10 15 20 25 30 35 TllOOZ / PS54406SEOO 9
    [8]
    Slide valve (16) according to one of the preceding claims, characterized in that it forms a cylindrical sleeve.
    [9]
    Slide valve (16) according to one of the preceding claims, characterized in that it has a plurality of different diameters.
    [10]
    Sheath valve (16) according to any one of the preceding claims, characterized in that a surface of said sheath valve (16) is arranged to be subjected to tank pressure (22) when the percussion device is in use.
    [11]
    Slide valve (16) according to any one of the preceding claims, characterized in that said at least one channel (24) extends in the axial direction of said slide valve (16) when the slide valve is mounted in said hydraulic stroke device (10).
    [12]
    Sheath valve (16) according to any one of the preceding claims, characterized in that said at least one channel extends along at least 20% of the length of the sheath valve (16).
    [13]
    Slide valve (16) according to any one of the preceding claims, characterized in that it contains a plurality of channels (24) and said plurality of channels (24) are evenly distributed around its periphery / perimeter.
    [14]
    Slide valve (16) according to any one of the preceding claims, characterized in that the outer diameter of said at least one pin (26) corresponds to the inner diameter of said at least one channel (24).
    [15]
    Stroke device (10), characterized in that it contains a slide valve (16) according to any one of the preceding claims.
    [16]
    The impact device (10) according to claim 15, characterized in that said slide valve (16) is arranged to perform a reciprocating movement with a frequency of 10 Hz or higher.
    [17]
    A method for causing a slide valve (16) of a percussion device (10) to perform a reciprocating motion when said percussion device (10) is in use, the method comprising the step of a changeover surface (18) of said percussion device. slide valve (16) is alternately subjected to a working pressure (20) and tank pressure (22), characterized in that slide valve (16) is provided with at least one channel (24) open at one end (24a) of said slide valve (16), and At least one movable pin (26) is arranged at least partially arranged inside said at least one channel (24).
    [18]
    Method according to claim 17, characterized in that said at least one pin (26) is subjected to a working pressure which presses one end (26a) of the pins against an immobile component (12) of said hydraulic percussion device (10), which gives a force to corresponding pour on the slide.
    [19]
    Method according to claim 18, characterized in that said working pressure is a substantially constant pressure, such as the working pressure (20) of the percussion device,
    [20]
    Method according to claim 18 or 19, characterized in that said working pressure is provided with a hydraulic fluid.
    类似技术:
    公开号 | 公开日 | 专利标题
    FI62480C|1983-01-10|SLAGANORDNING
    US8585113B2|2013-11-19|Parallel pneumatic gripper
    TW201533349A|2015-09-01|Overtravel pressure relief for a gas spring
    RU2012118680A|2013-11-20|DEVICE FOR REMOVING SCALES FROM CELLULAR ELEMENTS OF THE AIR-WATER HEAT EXCHANGER
    CN102029414A|2011-04-27|Clamping device with stationary releasing unit
    SE1250136A1|2013-08-18|Wear valve, impact device & method
    SE527921C2|2006-07-11|percussion
    US8915175B2|2014-12-23|Pneumatic cylinder
    CA3037629C|2021-03-16|Hydraulic actuator with pressure amplifier
    CN103267674A|2013-08-28|Tester clamp
    RU2016138453A|2018-03-30|Hydro | cylinder
    KR101451256B1|2014-10-16|Control valve having radial hole around center hole for hydraulic breaker
    CN102950161A|2013-03-06|Double-station stretching rod sliding table with positioning and locking device
    CN204512056U|2015-07-29|A kind of rotary drilling rig hydraulic jack
    CN109807879A|2019-05-28|A kind of fluid pressure type large-scale manipulator
    CN107345869B|2021-02-05|Clamping device for sample preparation
    US10166596B2|2019-01-01|Forging apparatus with forging rams guided in the direction of stroke and accommodating forging tools
    CN105370647B|2017-09-29|Hand-operated direction valve
    CN103976515B|2015-12-02|Automatic turning mechanism
    CN104533871A|2015-04-22|Cylinder controlled by diaphragm
    ITPA20120010A1|2013-11-04|IMPROVED ACTUATOR DEVICE IMPROVED FOR LIFTING AND / OR TRANSPORT AND EQUIPMENT INCLUDING THE DEVICE.
    CN210423235U|2020-04-28|Stroke-adjustable hydraulic cylinder and engineering machinery with same
    RU72068U1|2008-03-27|LOADING DEVICE FOR EXPLOSIVE TESTING MACHINES
    US9863446B2|2018-01-09|Triple pistons cylinder with reduced overall length
    EP2881608A3|2016-04-20|Fixed cover central clutch release for a hydraulic or pneumatic clutch actuating device, in particular for a motor vehicle
    同族专利:
    公开号 | 公开日
    CA2862210C|2020-01-14|
    CA2862210A1|2013-08-22|
    WO2013122534A1|2013-08-22|
    ZA201405132B|2017-04-26|
    US20150083501A1|2015-03-26|
    US9938770B2|2018-04-10|
    SE538675C2|2016-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1569542A|1921-07-01|1926-01-12|Sullivan Machinery Co|Rock-drilling mechanism|
    US1554984A|1921-11-29|1925-09-29|Ingersoll Rand Co|Fluid-actuated distributing valve for rock drills|
    US1662791A|1922-12-26|1928-03-13|Sullivan Machinery Co|Controlling mechanism|
    US1761734A|1925-05-20|1930-06-03|Chicago Pneumatic Tool Co|Fluid-pressure hammer|
    US1808481A|1929-12-04|1931-06-02|Ingersoll Rand Co|Pneumatic tool|
    US2165904A|1935-09-25|1939-07-11|Sullivan Machinery Co|Rock drilling mechanism|
    US2617629A|1950-07-05|1952-11-11|George A Robinson|Posthole digger|
    US3011569A|1951-09-25|1961-12-05|Ibis Entpr Ltd|Feed controlling device for a rock drilling mechanism|
    US2748751A|1953-10-16|1956-06-05|Raymond Concrete Pile Co|Fluid actuated power hammers|
    US3132703A|1956-05-15|1964-05-12|Atlas Copco Ab|Rock drilling mechanism|
    US3191692A|1961-11-20|1965-06-29|Atlas Copco Ab|Back head of pneumatic tools|
    US3203489A|1963-07-18|1965-08-31|Thor Power Tool Co|Sinker drill|
    US4005637A|1974-11-11|1977-02-01|Hydroacoustics Inc.|Hydroacoustic apparatus and valving mechanisms for use therein|
    BE850812R|1976-06-24|1977-05-16|Ingersoll Rand Co|HYDRAULIC ACTUATION DEVICES|
    US4286929A|1977-03-23|1981-09-01|Rodney T. Heath|Dual pressure gas motor, and method of operation|
    CH664730A5|1983-07-21|1988-03-31|Sig Schweiz Industrieges|METHOD AND DEVICE FOR DAMPING THE BALL Bounce IN DRUMMING TOOLS.|
    DE3882971T3|1988-04-06|1997-02-06|Nippon Pneumatic Mfg|Hydraulic impact device.|
    FI102202B1|1997-03-21|1998-10-30|Tamrock Oy|An arrangement in a rock drilling machine and a method for controlling rock drilling|
    FI107891B|1998-03-30|2001-10-31|Sandvik Tamrock Oy|Impact fluid driven impactor|
    US6176016B1|1998-07-02|2001-01-23|Honda Giken Kogyo Kabushiki Kaisha|Operation control lever unit for engine-powered working machine|
    DE20006073U1|2000-04-01|2000-07-06|Stihl Maschf Andreas|Hand-held implement with a drive motor|
    CA2415330C|2002-12-19|2005-03-15|Danny Morissette|Self-supporting pneumatic hammer positioner with universal joint|
    FI121004B|2003-01-03|2010-06-15|Sandvik Mining & Constr Oy|Rock drill and axial bearing for a striking rock drill|
    DE102011089735A1|2011-12-23|2013-06-27|Robert Bosch Gmbh|machine tool|US10493610B2|2014-01-31|2019-12-03|Furukawa Rock Drill Co., Ltd.|Hydraulic hammering device|
    法律状态:
    2020-09-29| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1250136A|SE538675C2|2012-02-17|2012-02-17|Wear valve, impact device & method|SE1250136A| SE538675C2|2012-02-17|2012-02-17|Wear valve, impact device & method|
    PCT/SE2013/050112| WO2013122534A1|2012-02-17|2013-02-11|Slide valve, percussion device & method|
    CA2862210A| CA2862210C|2012-02-17|2013-02-11|Slide valve, percussion device & method|
    US14/378,891| US9938770B2|2012-02-17|2013-02-11|Slide valve, percussion device and method|
    ZA2014/05132A| ZA201405132B|2012-02-17|2014-07-14|Slide valve, percussion device & method|
    [返回顶部]