SE530391C2 - Hydraulic percussion with pressure accumulator - Google Patents

Hydraulic percussion with pressure accumulator

Info

Publication number
SE530391C2
SE530391C2 SE0601923A SE0601923A SE530391C2 SE 530391 C2 SE530391 C2 SE 530391C2 SE 0601923 A SE0601923 A SE 0601923A SE 0601923 A SE0601923 A SE 0601923A SE 530391 C2 SE530391 C2 SE 530391C2
Authority
SE
Sweden
Prior art keywords
spring
diaphragm
percussion
disc
cylinder
Prior art date
Application number
SE0601923A
Other languages
Swedish (sv)
Other versions
SE0601923L (en
Inventor
Peter Karlsson
Original Assignee
Atlas Copco Constr Tools Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlas Copco Constr Tools Ab filed Critical Atlas Copco Constr Tools Ab
Priority to SE0601923A priority Critical patent/SE530391C2/en
Priority to PCT/SE2007/000819 priority patent/WO2008036019A1/en
Priority to EP07808828A priority patent/EP2064033B1/en
Priority to ES07808828T priority patent/ES2398728T3/en
Publication of SE0601923L publication Critical patent/SE0601923L/en
Publication of SE530391C2 publication Critical patent/SE530391C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/14—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery by means of a rigid annular supporting member
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder

Landscapes

  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Description

530 391 Ritningsförteckning= Fig. 1 visar ett längsgàende snitt genom ett hydraulslagverk enligt uppfinningen. 530 391 List of drawings = Fig. 1 shows a longitudinal section through a hydraulic percussion device according to the invention.

Fig. 2 visar ett delsnitt genom anordningen i Fig. 1.Fig. 2 shows a partial section through the device in Fig. 1.

Slagverket som illustreras på ritningen innefattar ett hus 10 med en cylinder 11 för styrning av en slagkolv 13, samt en frontöppning 12 med en med cylindern 11 koaxiell styrhylsa 14 för mottagning av ett arbetsverktyg 15 såsom ett brytverktyg. Anordningen uppvisar även ett styrsystem för dirigering av hydraulvätska till motsatta ändar av cylindern 11 för drivning av slagkolven 12. Detta styrsystem innefattar en riktningsventil 18 för dirigering av hydraulvätska till cylinderns ändar samt en tryckackumulator 19 för absorbering av trycktoppar i systemet under slagkolvens 12 arbete och för àterförande av tryckenergi i vissa avsnitt av kolvrörelsen.The percussion instrument illustrated in the drawing comprises a housing 10 with a cylinder 11 for guiding a percussion piston 13, and a front opening 12 with a guide sleeve 14 coaxial with the cylinder 11 for receiving a working tool 15 such as a breaking tool. The device also has a control system for directing hydraulic fluid to opposite ends of the cylinder 11 for driving the percussion piston 12. This control system comprises a directional valve 18 for directing hydraulic fluid to the ends of the cylinder and a pressure accumulator 19 for absorbing pressure peaks in the system during the work of the percussion piston 12 and for return of pressure energy in certain sections of the piston movement.

Tryckackumulatorn 19 innefattar ett hus 17 monterat pà huset 10 och definierande en tryckkammare 20. Kammaren 20 är uppdelad via ett elastiskt och flexibelt membran 21 i tvà avdelningar 20a och 20b av vilka den yttre avdelningen 20a är trycksatt av en komprimerad gas införd via en nippel 22. Den andra inre avdelningen 20b kommunicerar med och bildar del av anordningens hydrauliska styrsystem och kommunicerar med cylindern 11 via en sidoöppning 23 i den senare. I avdelningen 20b är anordnat ett membranstöd 24 vars uppgift är att skydda membranet 21 mot lokala päkänningar till följd av trycktoppar i systemet och även att fungera som ventilelement för reglering av öppningen 23. Membranstödet 24 uppvisar ett skivformigt element 26 med en konvex anliggningsyta 27 vänd mot membranet 21 samt en fjäder 28 för belastning av det skivformiga elementet 26 i riktning mot membranet 21. Fjädern 28 är konisk för att kunna bli mycket kompakt då den är helt hoppressad vid låga trycknivàer i avdelningen 20b. Fjädern 28 är formbundet styrd relativt huset 10 och det skivformiga elementet 26 530 391 dels genom att dess mindre ände är placerad runt ett rörformigt halsparti 29 pà husväggen och dels genom att dess större ände ingår i ett ringformigt spår 30 i det skivformiga elementet 26. Detta ger en god styrning av det skivformiga elementet 26 relativt membranet 21 och huset 10.The pressure accumulator 19 comprises a housing 17 mounted on the housing 10 and defining a pressure chamber 20. The chamber 20 is divided via an elastic and flexible membrane 21 into two compartments 20a and 20b of which the outer compartment 20a is pressurized by a compressed gas inserted via a nipple 22 The second inner compartment 20b communicates with and forms part of the hydraulic control system of the device and communicates with the cylinder 11 via a side opening 23 in the latter. In the compartment 20b is arranged a diaphragm support 24 whose function is to protect the diaphragm 21 against local stresses due to pressure peaks in the system and also to function as a valve element for regulating the opening 23. The diaphragm support 24 has a disc-shaped element 26 with a convex abutment surface 27 facing the diaphragm 21 and a spring 28 for loading the disc-shaped element 26 in the direction of the diaphragm 21. The spring 28 is conical to be able to become very compact as it is completely compressed at low pressure levels in the compartment 20b. The spring 28 is formally guided relative to the housing 10 and the disc-shaped element 26 530 391 partly in that its smaller end is placed around a tubular neck portion 29 on the housing wall and partly in that its larger end is included in an annular groove 30 in the disc-shaped element 26. This provides good control of the disc-shaped element 26 relative to the diaphragm 21 and the housing 10.

Genom att utnyttja fjädern 28 som ett styrorgan för det membranstödjande skivformiga elementet 26 istället för att förse det skivformiga elementet 26 med en integrerad styrspindel, såsom vid tidigare kända ackumulatorutformningar, kan man uppnå en mycket kompakt ackumulator 19 som nedbringar slagverkets tvärdimension.By using the spring 28 as a guide means for the diaphragm-supporting disc-shaped element 26 instead of providing the disc-shaped element 26 with an integrated guide spindle, as in previously known accumulator designs, a very compact accumulator 19 can be obtained which reduces the transverse dimension of the percussion.

Den koniska formen på fjädern 28 bidrar till att hälla nere dimensionerna på ackumulatorn.The conical shape of the spring 28 helps to lower the dimensions of the accumulator.

Det bör observeras att utföringsformerna av uppfinningen inte är begränsade till det beskrivna exemplet utan kan fritt varieras inom ramen för patentkraven.It should be noted that the embodiments of the invention are not limited to the example described but can be freely varied within the scope of the claims.

Claims (4)

530 351 Batentkray.530 351 Batentkray. 1. Hydrauliskt slagverk innefattande ett hus (10) med en cylinder (11), en slagkolv (13) arbetande i cylindern (11), samt ett styrsystem (18,19) för dirigering av hydraulvätska till motsatta ändar av cylindern (11) för drivning av slagkolven (13) fram och åter, varvid styrsystemet (18,19) innefattar en tryckackumulator (19) med en tryckkammare (20) avdelad av ett förspänt flexibelt membran (21), ett membranstöd (24) rörligt tillsammans med membranet (21) samt en fjäder (28) verkande på membranstödet (24) i riktning mot membranet (21), varvid membranstödet (24) uppvisar en mot membranet anliggande kontaktdel (26) och ett styrorgan för styrning av kontaktdelen (26) under membranets (21) rörelse, k ä n n e t e c k n a t av att nämnda kontaktdel (26) innefattar ett skivformigt element (26) uppvisande en konvex yta för anliggning mot membranet, och att nämnda styrorgan bildas av nämnda fjäder (28).Hydraulic percussion device comprising a housing (10) with a cylinder (11), a percussion piston (13) operating in the cylinder (11), and a control system (18, 19) for directing hydraulic fluid to opposite ends of the cylinder (11) for propulsion of the percussion piston (13) back and forth, the control system (18, 19) comprising a pressure accumulator (19) with a pressure chamber (20) divided by a prestressed flexible membrane (21), a membrane support (24) movable together with the membrane (21 ) and a spring (28) acting on the diaphragm support (24) in the direction of the diaphragm (21), the diaphragm support (24) having a contact part (26) abutting against the diaphragm and a guide means for guiding the contact part (26) below the diaphragm (21) movement, characterized in that said contact part (26) comprises a disc-shaped element (26) having a convex surface for abutment against the diaphragm, and that said guide means are formed by said spring (28). 2. Slagverk enligt kravet 1, k ä n n e t e c k n a t av att nämnda fjäder (28) utgörs av en skruvfjäder, och att nämnda skivformiga element (26) är utformat med ett cirkulärt koncentriskt spår (30) för styrning av fjäderns (28) ena ände.Percussion device according to claim 1, characterized in that said spring (28) consists of a helical spring, and that said disc-shaped element (26) is formed with a circular concentric groove (30) for guiding one end of the spring (28). 3. Slagverk enligt kravet 2, k ä n n e t e c k n a t av att huset (10) är försett med dels ett rörformigt halsparti (29) för styrning av fjäderns (28) motsatta ände och dels en vätskekommunikationsöppning (23) placerad intill nämnda halsparti (29).Percussion device according to claim 2, characterized in that the housing (10) is provided with a tubular neck portion (29) for guiding the opposite end of the spring (28) and a liquid communication opening (23) located next to said neck portion (29). 4. Slagverk enligt något av kraven 1-3, k ä n n e - t e c k n a t av att fjädern (28) är konisk och har sin större ände samverkande med nämnda skivformiga element (21).Percussion instrument according to any one of claims 1-3, characterized in that the spring (28) is conical and has its larger end cooperating with said disc-shaped elements (21).
SE0601923A 2006-09-19 2006-09-19 Hydraulic percussion with pressure accumulator SE530391C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE0601923A SE530391C2 (en) 2006-09-19 2006-09-19 Hydraulic percussion with pressure accumulator
PCT/SE2007/000819 WO2008036019A1 (en) 2006-09-19 2007-09-19 Hydraulic impact device with pressure accumulator
EP07808828A EP2064033B1 (en) 2006-09-19 2007-09-19 Hydraulic impact device with pressure accumulator
ES07808828T ES2398728T3 (en) 2006-09-19 2007-09-19 Hydraulic impact device with pressure accumulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0601923A SE530391C2 (en) 2006-09-19 2006-09-19 Hydraulic percussion with pressure accumulator

Publications (2)

Publication Number Publication Date
SE0601923L SE0601923L (en) 2008-03-20
SE530391C2 true SE530391C2 (en) 2008-05-20

Family

ID=39200759

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0601923A SE530391C2 (en) 2006-09-19 2006-09-19 Hydraulic percussion with pressure accumulator

Country Status (4)

Country Link
EP (1) EP2064033B1 (en)
ES (1) ES2398728T3 (en)
SE (1) SE530391C2 (en)
WO (1) WO2008036019A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200466458Y1 (en) * 2009-11-11 2013-04-18 주식회사수산중공업 A Solve Device for Accumulator abnormal pressure of Constrbattinguction Machine
SE536382C2 (en) * 2012-02-17 2013-10-01 Atlas Copco Constr Tools Ab Pressure accumulator & impact device
CN109441382A (en) * 2018-12-28 2019-03-08 易鲁川 A kind of hydraulic anchor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE208557C (en) * 1908-04-21
US3948288A (en) * 1974-12-13 1976-04-06 Gardner-Denver Company Hydraulic accumulator
SE462117B (en) * 1984-05-24 1990-05-07 Atlas Copco Mct Ab HYDRAULIC ACCUMULATOR FOR A HYDRAULIC SHOCK
JP3549501B2 (en) * 2001-07-23 2004-08-04 カネキタ株式会社 Air pulser and device using the air pulser
SE526992C2 (en) * 2004-03-12 2005-12-06 Atlas Copco Constr Tools Ab Hydraulic pressure accumulator

Also Published As

Publication number Publication date
EP2064033B1 (en) 2012-12-19
ES2398728T3 (en) 2013-03-21
WO2008036019A1 (en) 2008-03-27
EP2064033A1 (en) 2009-06-03
SE0601923L (en) 2008-03-20
EP2064033A4 (en) 2011-05-11

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