EP0283734A2 - Appareil de forage à percussion à tête de frappe mobile - Google Patents

Appareil de forage à percussion à tête de frappe mobile Download PDF

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Publication number
EP0283734A2
EP0283734A2 EP88102534A EP88102534A EP0283734A2 EP 0283734 A2 EP0283734 A2 EP 0283734A2 EP 88102534 A EP88102534 A EP 88102534A EP 88102534 A EP88102534 A EP 88102534A EP 0283734 A2 EP0283734 A2 EP 0283734A2
Authority
EP
European Patent Office
Prior art keywords
chisel
boring machine
piston
ram boring
housing
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP88102534A
Other languages
German (de)
English (en)
Other versions
EP0283734B1 (fr
EP0283734A3 (en
Inventor
Helmuth Römer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88102534T priority Critical patent/ATE75523T1/de
Publication of EP0283734A2 publication Critical patent/EP0283734A2/fr
Publication of EP0283734A3 publication Critical patent/EP0283734A3/de
Application granted granted Critical
Publication of EP0283734B1 publication Critical patent/EP0283734B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole

Definitions

  • the invention relates to a ram boring machine with a pneumatically or hydraulically driven percussion piston movable reciprocally in a housing and an axially movable chisel arranged at the front end of the housing, which is acted upon directly or indirectly by the percussion piston.
  • Such ram boring machines are used to advance earth bores for cables and the like to be laid underground.
  • the chisel is used to smash and displace the soil.
  • the movable arrangement of the chisel offers the advantage that the impact energy of the percussion piston can initially be transferred specifically to the chisel, so that a higher shattering energy is available.
  • DE-PS 31 24 524 describes a ram boring machine in which the chisel is resiliently biased into a front end position in which it is not hit by the percussion piston. If the chisel has no or only one offers low resistance, the impact energy is therefore transmitted directly to the housing, and only when the chisel hits an obstacle and is pushed back into the housing, it is hit by the percussion piston, so that the obstacle is smashed. With this arrangement, damaging empty blows are avoided, but here too, part of the impact energy is consumed by the spring, since the housing has to be accelerated against the spring force to the front when the chisel in the front end position hits an obstacle. In addition, in loose soil, where the housing is only slightly supported in the ground, there is a risk that the housing will be pushed back by the chisel and the preloaded spring.
  • the invention has for its object to provide a ram boring machine of the type mentioned, in which less energy losses occur when transmitting the impact energy to the chisel and in which the chisel can be transferred to a defined end position after the impact.
  • the pressure used to drive the percussion piston in the reverse direction is thus also used to reset the chisel. Since this pressure builds up only at the beginning of the backward stroke of the percussion piston, no corresponding counterpressure need be overcome during the forward stroke of the percussion piston, so that the impact energy can be transmitted to the chisel unabated.
  • the return piston is preferably arranged in a return chamber which receives the pneumatic or hydraulic pressure in such a way that it returns the chisel to its rearward end position.
  • the rear end face of the reset piston can also be pressurized, so that the chisel is pushed forward and is not acted upon by the percussion piston, as long as the soil provides only a slight resistance to the chisel.
  • the chisel does not have to be supported by a spring, the chisel can execute a rotational movement in relation to the housing.
  • the chisel tip is profiled in such a way that the chisel twists slightly when it penetrates into the ground. This improves the chipping behavior of the chisel and increases the directional stability of the ram boring machine.
  • the ram boring machine has a housing 1 provided with a chisel 14, which is closed off at the rear end by an end piece 15.
  • a front drive pressure chamber 5 is formed in the interior of the housing 1 by an impact piston 2 which is axially movable in the housing.
  • a rear drive pressure chamber 16 is located in a tubular portion 17 of the Percussion piston 2, which is slidable on a control sleeve 18.
  • a hose 19 supplies the ram boring machine with compressed air.
  • the tubular section 17 of the percussion piston 2 is provided with radial channels 20, and the end piece has axial air channels 21.
  • the radial channels 20 are temporarily closed by the control sleeve 18. As soon as these radial channels slide over the rear end of the control sleeve, the pressure in the front drive pressure chamber 5 can relax via the channels 22, 20 of the percussion piston and the axial air channels 21 of the end piece 15, so that the percussion piston through the in the rear drive pressure chamber 16 prevailing pressure is driven forward again. At the end of the forward stroke, the percussion piston 2 hits the rear end face 13 of the chisel 14 without braking so that the chisel is driven into the ground.
  • the part of the chisel 14 located within the housing 1 extends gas-tight through a front end wall 11 of the housing and a partition 23 which delimits the front drive pressure chamber 5.
  • the section of the chisel located between the end wall 11 and the partition 23 forms a reset piston 3, the front end surface of which is surrounded by a buffer element 24 and which delimits a reset chamber 6 with the peripheral wall and the front end wall of the housing.
  • the space between the reset piston 3 and the partition 23 is vented through a bore 8 in the housing 1.
  • the reset chamber 6 is connected to the front drive pressure chamber 5 via a radial bore 4 and an axial bore 4 ⁇ of the chisel.
  • the chisel acted upon by the percussion piston 2 moves only a relatively short distance in relation to the housing, so that the transverse bore 4 remains within the reset chamber 6.
  • the pressure prevailing during the backward stroke of the percussion piston 2 in the front drive pressure chamber 5 therefore spreads via the axial channel 4 ⁇ and the radial channel 4 into the reset chamber 6. Since the effective area of the reset piston 3 facing the reset chamber 6 is larger than the rear end face 13 of the chisel exposed to the front drive chamber 5, the chisel is pneumatically returned to the rear end position shown in FIGS the front end face 9 of the end wall 11 strikes.
  • the chisel can be driven further into the ground, so that the striking piston 2 has its front end on the rear end face 25 of the partition 23 beats. In this way, part of the impact energy is used to propel the housing.
  • the chisel is not hit by the percussion piston 2 in the front end position, so that the entire impact energy is available to propel the housing. Only when the chisel 14 again meets stronger opposition and is pushed back into the housing 1, does the transverse bore 4 again come into fluid communication with the reset chamber 6, so that the chisel is transferred back to the rear end position when the impact piston is moved backwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP88102534A 1987-03-27 1988-02-22 Appareil de forage à percussion à tête de frappe mobile Expired - Lifetime EP0283734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102534T ATE75523T1 (de) 1987-03-27 1988-02-22 Rammbohrgeraet mit beweglichem meissel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3710162A DE3710162C1 (de) 1987-03-27 1987-03-27 Rammbohrgeraet mit beweglichem Meissel
DE3710162 1987-03-27

Publications (3)

Publication Number Publication Date
EP0283734A2 true EP0283734A2 (fr) 1988-09-28
EP0283734A3 EP0283734A3 (en) 1989-11-08
EP0283734B1 EP0283734B1 (fr) 1992-04-29

Family

ID=6324148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102534A Expired - Lifetime EP0283734B1 (fr) 1987-03-27 1988-02-22 Appareil de forage à percussion à tête de frappe mobile

Country Status (4)

Country Link
US (1) US4886128A (fr)
EP (1) EP0283734B1 (fr)
AT (1) ATE75523T1 (fr)
DE (1) DE3710162C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353400A2 (fr) * 1988-07-29 1990-02-07 Schmidt, Paul Mouton de forage
EP0372225A2 (fr) * 1988-12-05 1990-06-13 Schmidt, Paul, Dipl.-Ing. Mouton de forage
WO1992020896A1 (fr) * 1991-05-13 1992-11-26 Kayes Allan G Marteau de forage a tete mobile
CN102392598A (zh) * 2011-09-24 2012-03-28 邵金安 液压振动冲击器及其构成的桩工动力头
DE102005051585B4 (de) 2004-11-08 2019-07-18 Earth Tool Company Llc Pneumatisches Bodenstechwerkzeug

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006516A1 (fr) * 1988-01-21 1989-07-27 Aesculap Ag Outil percutant pour instruments chirurgicaux
DE4003189A1 (de) * 1990-02-03 1991-08-08 Roemer Helmuth Rammvorrichtung
US5226487A (en) * 1990-02-07 1993-07-13 Mbs Advanced Engineering Systems Pneumopercussive machine
US5031706A (en) * 1990-02-07 1991-07-16 Mbs Advanced Engineering Systems Pneumopercussive soil penetrating machine
DE59406589D1 (de) * 1993-03-30 1998-09-10 Integral Medizintechnik Pneumatisches Schlagwerkzeug
WO1997002386A1 (fr) * 1995-07-06 1997-01-23 Komatsu Ltd. Rouleau-compacteur hydraulique
US5816342A (en) * 1997-01-27 1998-10-06 Columbia Gas Distribution Companies Small diameter impact boring tool
US6273201B1 (en) * 2000-02-16 2001-08-14 Earth Tool Company, L.L.C. Pneumatic ground piercing tool with movable chisel head
US6557652B2 (en) * 2000-05-18 2003-05-06 Guenter Klemm Method for performing ground or rock work and hydraulic percussion device
DE10146023B4 (de) * 2001-09-18 2006-02-23 Tracto-Technik Gmbh Steuerung für einen Schlagantrieb
US20060088384A1 (en) * 2004-10-22 2006-04-27 Putnam Samuel W Stored energy coupling and pipe bursting apparatus
DE502005011060D1 (de) * 2005-05-17 2011-04-14 Gruenig & Elmiger Ag Schlagwerkzeug, insbesondere für den chirurgischen einsatz
US7681658B2 (en) 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool
US8955613B2 (en) * 2008-05-03 2015-02-17 Earth Tool Company, Llc Pneumatic impact tool
WO2011000033A1 (fr) * 2009-06-29 2011-01-06 Maintenance Technique Pty Ltd Ensemble tête de forage
US8708061B2 (en) 2010-12-14 2014-04-29 Caterpillar Inc. Lower damper for demolition hammer
US9115542B1 (en) * 2015-04-14 2015-08-25 GDD Associates, Trustee for Geo-diving device CRT Trust Geo-diving device
CN105240027B (zh) * 2015-10-30 2017-08-04 国网山东省电力公司东营供电公司 同轴反向式电缆隧洞钻进装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2157259B1 (de) * 1971-11-18 1972-11-09 Tracto Technik Rammbohrgerät
DE2551303A1 (de) * 1975-11-14 1977-06-16 Inst Gornowo Dela Sib Otdel Ak Versenkbare druckluftbohrmaschine schlagend-umsetzender wirkung mit eigenbewegung
DE3124524A1 (de) * 1981-06-23 1983-01-13 Gustav Dr.-Ing. 4300 Essen Jenne Rammkopf fuer selbstgetriebene pneumatische rammbohrgeraete

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US450782A (en) * 1891-04-21 Pneumatic tool holding and operating device
US520915A (en) * 1894-06-05 Direct-acting engine
US1416086A (en) * 1920-11-12 1922-05-16 John T Scott Air hammer
US1665046A (en) * 1924-10-29 1928-04-03 Ralph H Tucker Pneumatic hammer
AT238665B (de) * 1962-01-12 1965-02-25 Johann Dipl Ing Mayer Setzgerät
US3266581A (en) * 1963-11-01 1966-08-16 Mechanical Res Corp Vibrationless power tool
SU794115A1 (ru) * 1972-12-07 1981-01-07 Институт Горного Дела Со Ан Ссср Пневматическое устройство ударногодЕйСТВи дл пРОХОдКи СКВАжиН ВгРуНТЕ
US4018291A (en) * 1974-12-23 1977-04-19 Allied Steel & Tractor Products, Incorporated Pneumatic hammer
FI60153C (fi) * 1978-05-11 1981-12-10 Tampella Oy Ab Slaganordning
DE8310178U1 (de) * 1982-10-08 1983-10-06 Markovic, Vladimir, 61113 Ljublijana Pneumatisches, selbstgetriebenes rammbohrgeraet
CH664730A5 (de) * 1983-07-21 1988-03-31 Sig Schweiz Industrieges Verfahren und vorrichtung zur daempfung des rueckpralles bei schlagwerkzeugen.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2157259B1 (de) * 1971-11-18 1972-11-09 Tracto Technik Rammbohrgerät
DE2551303A1 (de) * 1975-11-14 1977-06-16 Inst Gornowo Dela Sib Otdel Ak Versenkbare druckluftbohrmaschine schlagend-umsetzender wirkung mit eigenbewegung
DE3124524A1 (de) * 1981-06-23 1983-01-13 Gustav Dr.-Ing. 4300 Essen Jenne Rammkopf fuer selbstgetriebene pneumatische rammbohrgeraete

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353400A2 (fr) * 1988-07-29 1990-02-07 Schmidt, Paul Mouton de forage
EP0353400A3 (fr) * 1988-07-29 1991-02-06 Schmidt, Paul Mouton de forage
EP0372225A2 (fr) * 1988-12-05 1990-06-13 Schmidt, Paul, Dipl.-Ing. Mouton de forage
EP0372225A3 (fr) * 1988-12-05 1992-05-27 Schmidt, Paul, Dipl.-Ing. Mouton de forage
WO1992020896A1 (fr) * 1991-05-13 1992-11-26 Kayes Allan G Marteau de forage a tete mobile
AU662525B2 (en) * 1991-05-13 1995-09-07 Allan George Kayes Soil displacement hammer with movable head
DE102005051585B4 (de) 2004-11-08 2019-07-18 Earth Tool Company Llc Pneumatisches Bodenstechwerkzeug
CN102392598A (zh) * 2011-09-24 2012-03-28 邵金安 液压振动冲击器及其构成的桩工动力头
CN102392598B (zh) * 2011-09-24 2013-08-14 邵金安 液压振动冲击器及其构成的桩工动力头

Also Published As

Publication number Publication date
EP0283734B1 (fr) 1992-04-29
DE3710162C1 (de) 1988-09-29
ATE75523T1 (de) 1992-05-15
EP0283734A3 (en) 1989-11-08
US4886128A (en) 1989-12-12

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