SE8100707L - HYDRAULIC DRIVING DEVICE FOR POWER TOOLS - Google Patents

HYDRAULIC DRIVING DEVICE FOR POWER TOOLS

Info

Publication number
SE8100707L
SE8100707L SE8100707A SE8100707A SE8100707L SE 8100707 L SE8100707 L SE 8100707L SE 8100707 A SE8100707 A SE 8100707A SE 8100707 A SE8100707 A SE 8100707A SE 8100707 L SE8100707 L SE 8100707L
Authority
SE
Sweden
Prior art keywords
control
slide valve
groove
control shaft
driving device
Prior art date
Application number
SE8100707A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
H Manten
Original Assignee
Salzgitter Maschinen Ag
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 Salzgitter Maschinen Ag filed Critical Salzgitter Maschinen Ag
Publication of SE8100707L publication Critical patent/SE8100707L/en

Links

Classifications

    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
    • F03C1/0073—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Actuator (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)

Abstract

A hydraulic drive system for a hammering tool provides a compact system with comparatively short flow paths which are largely accommodated within a control cylinder (27), a slide valve (35) and a control collar (31) which encircle a central control shaft. The slide valve (35) is arranged between the rearward end of a working piston (to the left of Fig. 3) and a control groove (52) in the control shaft. A working surface of the working piston is connected by way of an intermediate chamber (37), in dependence on the axial position of the slide valve (35), either with a fluid return groove (47) and a fluid return passageway (45) or with a pressurised fluid groove (42) and a pressurised fluid supply passageway (24). A flushing medium passage (34) extends centrally through the control shaft and on to the tool. <IMAGE>
SE8100707A 1980-04-24 1981-01-30 HYDRAULIC DRIVING DEVICE FOR POWER TOOLS SE8100707L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803015696 DE3015696A1 (en) 1980-04-24 1980-04-24 HYRAULIC DRIVING DEVICE FOR A DRIVING TOOL

Publications (1)

Publication Number Publication Date
SE8100707L true SE8100707L (en) 1981-10-25

Family

ID=6100778

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8100707A SE8100707L (en) 1980-04-24 1981-01-30 HYDRAULIC DRIVING DEVICE FOR POWER TOOLS

Country Status (5)

Country Link
DE (1) DE3015696A1 (en)
ES (1) ES499091A0 (en)
FR (1) FR2481183A1 (en)
GB (1) GB2074663B (en)
SE (1) SE8100707L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8715784U1 (en) * 1987-11-28 1989-03-23 Salzgitter Maschinenbau GmbH, 3320 Salzgitter Control device for a hydraulic drive device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO74260A (en) * 1974-04-25 1980-10-30 Oy Tampella Ab,Fi POWERFUL PERFORATER WITH PRESSURE LIQUID
DE2520323A1 (en) * 1975-05-07 1976-11-18 Salzgitter Maschinen Ag Hydraulic drive for impact tool - incorporates work piston with control slide valve with groove to provide hydraulic connection
US4196780A (en) * 1978-05-09 1980-04-08 Kabushiki Kaisha Komatsu Seisakusho Hydraulic percussion drill
EP0022865B1 (en) * 1978-12-15 1984-08-01 Furukawakogyo Co.Ltd Hydraulically-driven downhole drill

Also Published As

Publication number Publication date
FR2481183A1 (en) 1981-10-30
DE3015696A1 (en) 1981-10-29
ES8201463A1 (en) 1981-12-16
FR2481183B1 (en) 1983-01-07
GB2074663B (en) 1983-10-26
GB2074663A (en) 1981-11-04
ES499091A0 (en) 1981-12-16

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