SE525600C2 - Accumulator for liquid-powered percussion with a body of foamed plastic - Google Patents

Accumulator for liquid-powered percussion with a body of foamed plastic

Info

Publication number
SE525600C2
SE525600C2 SE0202545A SE0202545A SE525600C2 SE 525600 C2 SE525600 C2 SE 525600C2 SE 0202545 A SE0202545 A SE 0202545A SE 0202545 A SE0202545 A SE 0202545A SE 525600 C2 SE525600 C2 SE 525600C2
Authority
SE
Sweden
Prior art keywords
liquid
accumulator
foamed plastic
housing
polyurethane
Prior art date
Application number
SE0202545A
Other languages
Swedish (sv)
Other versions
SE0202545L (en
SE0202545D0 (en
Inventor
Lennart Donse
Original Assignee
Atlas Copco Rock Drills 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 Rock Drills Ab filed Critical Atlas Copco Rock Drills Ab
Priority to SE0202545A priority Critical patent/SE525600C2/en
Publication of SE0202545D0 publication Critical patent/SE0202545D0/en
Priority to PCT/SE2003/001313 priority patent/WO2004020155A1/en
Priority to AU2003253548A priority patent/AU2003253548A1/en
Publication of SE0202545L publication Critical patent/SE0202545L/en
Publication of SE525600C2 publication Critical patent/SE525600C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pipe Accessories (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

Accumulator for liquid driven hammer device comprising a housing (1), a room (2) arranged in the housing in connection with a channel (3) in which a liquid with varying pressure is situated in which the room (2) comprises a body (4) of foamed plastics provided with a surface layer (5) which separates the liquid from the inside of the body (4). The foamed plastics is microcellular polyurethane and the surface layer (5) is a sealing lining of polyurethane.

Description

ret' fr-fw 1 x., _... \.' Azolzmiim A , ._ . . och en denna omslutande cylinderdel 7. Mellan delarna 6,7 finns ett rum 2 i vilket en kropp 4 av skumplast är anordnad. Kroppen 4 är försedd med ett ytskikt 5. Den centrala delen 6 omsluter en kanal 3 i vilken en vätska med varierande tryck befinner sig. Den centrala delen 6 innefattar ett antal radiella öppningar 8 som förbinder kanalen 3 med rummet 2. ret 'fr-fw 1 x., _... \.' Azolzmiim A, ._. . and a cylinder part 7 enclosing it. Between the parts 6,7 there is a space 2 in which a body 4 of foam plastic is arranged. The body 4 is provided with a surface layer 5. The central part 6 encloses a channel 3 in which a liquid of varying pressure settles. The central part 6 comprises a number of radial openings 8 which connect the channel 3 to the space 2.

Cylinderdelen 7 hålls på plats av ett ändstycke 9 och en mutter 11. Vid användning är hydraulslangar pressade mot de koniska ytorna 12 ochl3. Skumplastlcroppen utgöres med fördel av mikrocellpolyuretan och ytskiktet 5 som skiljer det inre av kroppen 4 från vätskan med varierande tryck utgöres med fördel av en tätande beläggning av polyuretan.The cylinder part 7 is held in place by an end piece 9 and a nut 11. In use, hydraulic hoses are pressed against the conical surfaces 12 and 13. The foam body is advantageously constituted by microcellular polyurethane and the surface layer 5 which separates the interior of the body 4 from the liquid of varying pressure is advantageously constituted by a sealing coating of polyurethane.

Claims (2)

Azorzsemvaoc 3 .PatentkravzAzorzsemvaoc 3 .Patentkravz 1. Ackumulator för vätskedrivet slagverk innefattande ett hus (1), ett i huset anordnat rum (2) i förbindelse med en kanal (3) i vilken en vätska med varierande tryck befinner sig, k ä n n e t e c k n a d av att rummet (2) innehåller en kropp (4) av skumplast försedd med en tätande ytbeläggning (5) som skiljer vätskan från kroppens (4) inre.Accumulator for liquid-powered percussion comprising a housing (1), a space (2) arranged in the housing in connection with a channel (3) in which a liquid of varying pressure is located, characterized in that the space (2) contains a foam body (4) provided with a sealing coating (5) which separates the liquid from the interior of the body (4). 2. Ackumulator enligt patentkravet 1, k ä n n e te c k n a d av att skumplasten utgöres av rnikrocellpolyuretan sarnt att den tätande ytbeläggningen (5) utgöres av polyuretan.Accumulator according to Claim 1, characterized in that the foam plastic is made of microcellular polyurethane and the sealing surface coating (5) is made of polyurethane.
SE0202545A 2002-08-29 2002-08-29 Accumulator for liquid-powered percussion with a body of foamed plastic SE525600C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0202545A SE525600C2 (en) 2002-08-29 2002-08-29 Accumulator for liquid-powered percussion with a body of foamed plastic
PCT/SE2003/001313 WO2004020155A1 (en) 2002-08-29 2003-08-26 Accumulator with foam plastic for a liquid driven hammer device
AU2003253548A AU2003253548A1 (en) 2002-08-29 2003-08-26 Accumulator with foam plastic for a liquid driven hammer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0202545A SE525600C2 (en) 2002-08-29 2002-08-29 Accumulator for liquid-powered percussion with a body of foamed plastic

Publications (3)

Publication Number Publication Date
SE0202545D0 SE0202545D0 (en) 2002-08-29
SE0202545L SE0202545L (en) 2004-03-01
SE525600C2 true SE525600C2 (en) 2005-03-15

Family

ID=20288823

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0202545A SE525600C2 (en) 2002-08-29 2002-08-29 Accumulator for liquid-powered percussion with a body of foamed plastic

Country Status (3)

Country Link
AU (1) AU2003253548A1 (en)
SE (1) SE525600C2 (en)
WO (1) WO2004020155A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533280C2 (en) * 2008-12-29 2010-08-10 Atlas Copco Rock Drills Ab Accumulator membrane assembly, method of manufacturing accumulator membrane assembly and rock drill containing such accumulator membrane assembly.
US9592598B2 (en) 2013-03-15 2017-03-14 Caterpillar Inc. Hydraulic hammer having impact system subassembly
US9555531B2 (en) 2013-03-15 2017-01-31 Caterpillar Inc. Hydraulic hammer having co-axial accumulator and piston
US9151386B2 (en) 2013-03-15 2015-10-06 Caterpillar Inc. Accumulator membrane for a hydraulic hammer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2231292A (en) * 1989-05-04 1990-11-14 Desoutter Ltd Hydraulic impulse torque generator
DE4035785C2 (en) * 1990-11-10 1994-09-08 Bosch Gmbh Robert Bladder accumulator
SE509915C2 (en) * 1997-06-09 1999-03-22 Atlas Copco Tools Ab Hydraulic torque pulse generator

Also Published As

Publication number Publication date
SE0202545L (en) 2004-03-01
WO2004020155A1 (en) 2004-03-11
AU2003253548A1 (en) 2004-03-19
SE0202545D0 (en) 2002-08-29

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Legal Events

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NUG Patent has lapsed