EP1291487A1 - Procédé pour travailler le sol et des pierres et outil de percussion hydraulique - Google Patents

Procédé pour travailler le sol et des pierres et outil de percussion hydraulique Download PDF

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Publication number
EP1291487A1
EP1291487A1 EP02025773A EP02025773A EP1291487A1 EP 1291487 A1 EP1291487 A1 EP 1291487A1 EP 02025773 A EP02025773 A EP 02025773A EP 02025773 A EP02025773 A EP 02025773A EP 1291487 A1 EP1291487 A1 EP 1291487A1
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EP
European Patent Office
Prior art keywords
piston
working
control
pistons
working piston
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.)
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Application number
EP02025773A
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German (de)
English (en)
Inventor
Günter Prof. Dr.-Ing. Klemm
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Individual
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Individual
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Publication date
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Publication of EP1291487A1 publication Critical patent/EP1291487A1/fr
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    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • E21B6/04—Separate drives for percussion and rotation
    • 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
    • B25D9/04—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
    • 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
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve

Definitions

  • the invention relates to a method for carrying out earth or Stone work, in which blows of at least two hydraulically driven piston on an anvil be exercised, as well as a hydraulic hammer mechanism Implementation of such earth and stone work.
  • Earth and stone work includes drilling in the ground or rock, in particular to understand hammer drilling, under also overlay drilling with inner tube rods and Outer tube linkage as well as the operation of rock breakers, at which a work tool in the form of a chisel by blows in rocky rock is driven to break this open.
  • Hydraulic striking mechanisms with which the insertion end is known a pipe string for drilling or on the chisel a rock breaker is hit.
  • the effectiveness of such Striking mechanism depends on the single impact energy and the Beat frequency.
  • a high single impact energy is achieved if the working piston of the striking mechanism has a high mass. to Accelerating such masses requires high pressures.
  • the mass of the working piston is several kg and the piston stroke is e.g. 35 mm.
  • Typical piston speeds are 7 to 11 m / sec.
  • the attainable stroke rate is between 250 and 3500 beats / min. Should the single impact energy the mass will usually be enlarged of the working piston increases, which is usually a Reduction in stroke rate.
  • a fluid-operated impact hammer is known from DE 43 43 589 C1, where the working piston is controlled by a control piston and hits the plug end of a drill pipe exercises. To do that when pulling back the drill pipe, a non-return piston is provided, the blows against one of the anvil surface Counterface of the insertion end. Here, the Non-return piston only switched on when the working piston is stopped.
  • US-A-5 647 445 describes a deep hole hammer, the two Has anvils that are firmly connected to a drill bit. Each anvil has a piston that strikes the anvil exercises. The pistons are controlled by valves so that they lifted together and then the one facing downwards Carry out work stroke at the same time. If the top If the piston hits the upper anvil, the lower piston sets its downward motion continues until it hits the lower anvil suggests. The strikes of the two pistons occur close in time together and without a fixed phase relationship.
  • the invention has for its object a method for Perform earthworks or stone work and a hydraulic one To create percussion to increase the effectiveness of the To obtain field processing, i.e. increased drilling or increased crushing performance (when rock breaking).
  • the working pistons should be different Hit times on the anvil.
  • the movements of the working pistons can be synchronized so that the working pistons operated out of phase with each other, with two For example, the working piston is 180 ° out of phase. This means, that one working piston carries out the stroke, while the other piston is on the return stroke. Phase shifts other than 180 ° are also possible.
  • Another variant of the invention provides that the blows the working piston synchronously, i.e. run at the same time.
  • the working pistons must have the same working frequencies and operate without mutual phase shift. It there is also the possibility of providing a striking mechanism in such a way that the working pistons are optionally synchronous and can be operated asynchronously.
  • the invention enables a high number of blows (frequency of blows) which keeps the drill pipe in constant motion during drilling (Vibration) is held. Since most floors are grainy Contain part that gets in motion due to the high number of blows, impact drilling results in a very high drilling feed. In addition, bounce blows can occur with the method according to the invention be prevented from occurring when a blow hits hits a shock wave returning in the drill pipe. Through the high number of strokes the next stroke is always exercised if the returning wave is not yet on the back Has arrived at the end.
  • the method according to the invention allows numerous variants of the Control of the at least two working pistons. So is one Control possible where both working pistons have equal rights are or a control system in which one of the working pistons is the Master function and the other one performs the slave function.
  • the anvil acting blows exerted by different working pistons preferably have essentially the same masses. This means that the deviation of the masses is a maximum of 10% is. However, the masses can also vary to a greater extent differ from each other, although the mass of the lighter of the working pistons not less than two thirds, preferably not less than three quarters, the mass of heavier piston.
  • the anvil 10 consists of the Insertion end of a drilling device, the insertion end with a (not shown) pipe string is connected, which on carries a drill bit at the front end.
  • the insertion is with a spline section 11 into which a (not shown) Rotary drive engages to turn the insertion end, which also rotates the pipe string.
  • the anvil 10 has a first anvil surface at its front end 12 and spaced therefrom an annular second anvil surface 13 on.
  • a shaft 14 stands from the anvil surface 13 backwards. The first is at the end of the shaft 14 Anvil surface 12.
  • Working piston AK1 which can be moved in a working cylinder AZ1 is.
  • the working piston AK1 is controlled by a control piston SK1, which is in a control cylinder SZ1 is movable.
  • the control piston SK1 is a hollow control sleeve, while the working piston AK1 is a full piston.
  • a high-pressure line HD leads through the control cylinder SZ1, is supplied via the hydraulic medium at high pressure.
  • the Hydraulic medium also fills the hollow interior of the control piston SK1.
  • a high-pressure line leads from the control cylinder SZ1 15 to the front end of the cylinder AZ1.
  • an annular groove 16 is provided, one of which Control line 17 to the rear end of the working cylinder AZ1 leads.
  • the annular groove 16 passes alternately through radial bores 18 of the control piston SK1 with the high pressure and via a Control groove 19 on the outside of the working piston SK1 with the Return RL in connection.
  • the control groove 19 is constantly in the area of an annular groove 20 connected to the return RL of the control cylinder SZ1.
  • a control line 22 leads from the working cylinder AZ1 to Control cylinder SZ1.
  • the control line 22 is connected to the high pressure line 15 connected when the working piston AK1 is in the Treatment position (shown in Figure 1), and she is connected to the return line 21 when the working piston AK1 itself when it hits the anvil surface 12 in the front end position.
  • This reversal of the control piston a collar B1 of the working piston causes by the working piston.
  • Another bundle B2 of the working piston is limited the rear cylinder space into which the control line 17 leads.
  • the drive of the working piston AK1 with a forward facing Working stroke is done by the control line 17 High pressure acts on the control surface SF1. That of the control surface SF1 opposite control surface SF2 is smaller than the control surface SF1.
  • the control surface SF2 is always that Exposed to high pressure.
  • the control surface is SF1 on the return stroke depressurized, so that the working piston AK1 is moved back.
  • the larger control area SF1 predominates force exerted is the force exerted on the smaller control surface SF2 Counterforce.
  • the control line 22 controls the movement of the control piston SK1 by exerting pressure on the control surface SF3.
  • the Control piston SK1 is hydraulically biased towards the left, So in the position that the return stroke of the working piston AK1 corresponds. However, if via the control line 22 the high pressure acts on the control surface SF3, the Control piston SK1 moved to the position shown (right), in which he has the working stroke or stroke stroke of the working piston AK1 causes.
  • a second working piston AK2 which is hollow or tubular is formed, strikes the annular anvil surface 13.
  • the AK2 working piston is basically on its outer surface trained in the same way as the working piston AK1. He has two opposing control surfaces SF1 and SF2, of which the control surface SF2 is constantly exposed to high pressure while the pressure acting on the control surface SF1 is changed by the control piston SK2.
  • the control piston SK2 controls the working piston AK2 and the control line 17a the working piston AK2 controls the control line 22a Control piston SK2.
  • the control piston SK2 is in the same way designed like the control piston SK1. He is also at the High pressure line HD and the return line RL connected.
  • the masses of the two control pistons AK1 and AK2 are approximate same size.
  • the mass of each piston is between 8 and 30 kg.
  • the piston stroke of the working pistons is approximately 35 mm and the working frequency of the working pistons is up to 3500 Beats / min.
  • each working piston has its own control piston.
  • the movements of the working pistons are therefore not synchronized. Since it cannot be assumed that both working pistons operated at exactly the same frequency irregular impact sequences result.
  • the two high pressure lines HD in Figure 1 can either on the same high pressure source or to different high pressure sources be connected. It is therefore possible to do both Working piston and the associated control piston with different operate at high pressures.
  • the different Pressure sources can also be designed for different amounts of oil his.
  • the working piston AK1 and the working cylinder AZ1 in the same Formed like in the first embodiment.
  • the Working piston AK1 strikes the anvil surface 12 of the anvil 10.
  • the working piston AK2 and the working cylinder AZ2 are also in formed in the same way as in Figure 1.
  • the working piston AK2 is an annular piston, which rests on the annular anvil surface 13 suggests.
  • a separate control piston is with this Embodiment not available because of the working piston AK2 forms the control piston for the working piston AK1, and vice versa.
  • the control line 17 of the first working cylinder AZ1 is namely with the control line 22a of the second working cylinder AZ2 connected and the control line 22 of the first working cylinder AZ1 is with the control line 17a of the second working cylinder AZ2 connected.
  • the working pistons control themselves mutually and in opposite phases. This means that the working piston AK2 assumes its front end position when the working piston AK1 assumes its rear end position, and that the working piston AK2 is in its rear end position, when the AK1 piston is in its front end position occupies.
  • the movements of both working pistons are with each other synchronized and out of phase by 180 °. This results in with a steady beat, a beat frequency that is double is as high as the stroke frequency of each individual piston.
  • control line 17a comes out of the working cylinder AZ1.
  • This control line leads into the working cylinder AZ2 to the Apply pressure to control surface SF3 of working piston AK2 or to depressurize.
  • piston AK1 forms with control piston SK1 again a frequency determining feedback circuit while the working piston AK2 as slave of the working piston AK1 is also controlled.
  • control piston SK is the same Formed like the control piston SK1, but additionally provided with an extension 24.
  • the extension 24 contains a control groove 25, which two annular grooves 26,27 of the control cylinder SZ can bridge.
  • the annular groove 26 is always with the return line RL connected and the annular groove 27 is with a control line 17b connected, which in turn with the in the control line 17a leading into the working cylinder AZ2 is.
  • the control line 17b is alternately radial Bores 28 of the control piston SK pressurized and depressurized by the control groove 25.
  • the pressure in the Control line 17b is in phase opposition to the pressure in the control line 17, whereby both working pistons AK1 and AK2 are in phase opposition operated to each other.
  • the AK1 working piston also works the control piston SK together to generate an oscillating movement, during the AK2 working piston as slave the control is not affected.
  • FIG. 5 largely corresponds that of Fig. 4, so the description below limited to explaining the differences.
  • the switching device has three connections A, B, C, where C forms an outlet which is optionally connected to inlet A. or connected to inlet B or depressurized.
  • the switching element 34 is in the position in which it is connects inlet B to outlet C. Inlet A is blocked. This means that the control pressure in the Control line 17 both the working piston AK1 and the Working piston AK2 controls, this control synchronously he follows. Both working pistons hit and at the same time together on the shaft 14.
  • the switching member 34 When the switching member 34 is in the position shown in FIG. 6 , it connects inlet A to outlet C. The Inlet B is blocked. Since on the control lines 17, 17b the inverse of each other, the two Working pistons AK1 and AK2 operated in phase opposition to each other. The Beat frequency is compared to that of an individual Piston doubled.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP02025773A 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique Withdrawn EP1291487A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10024505 2000-05-18
DE10024505A DE10024505A1 (de) 2000-05-18 2000-05-18 Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk
EP00116974A EP1157787B1 (fr) 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00116974A Division EP1157787B1 (fr) 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique

Publications (1)

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EP1291487A1 true EP1291487A1 (fr) 2003-03-12

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EP02025773A Withdrawn EP1291487A1 (fr) 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique
EP00116974A Expired - Lifetime EP1157787B1 (fr) 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique

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EP00116974A Expired - Lifetime EP1157787B1 (fr) 2000-05-18 2000-08-08 Procédé pour travailler le sol et des pierres et outil de percussion hydraulique

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EP (2) EP1291487A1 (fr)
DE (2) DE10024505A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2099999A1 (fr) * 2007-01-11 2009-09-16 Atlas Copco Rock Drills AB Équipement de forage de roches et procédé en association avec celui-ci
CN103352895A (zh) * 2013-06-28 2013-10-16 山河智能装备股份有限公司 一种液压冲击器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115957B (fi) 2001-11-07 2005-08-31 Sandvik Tamrock Oy Kaksimäntäinen iskulaite
WO2003074834A1 (fr) * 2002-03-05 2003-09-12 Andrea Tonti Foret equipe d'un marteau vibrant dote de masses excentriques permettant de soutenir un instrument
SE531658C2 (sv) * 2006-10-02 2009-06-23 Atlas Copco Rock Drills Ab Slagverk jämte bergborrmaskin och bergborrigg
SE1150383A1 (sv) 2011-05-03 2012-07-24 Atlas Copco Rock Drills Ab En slagöverföringsdel, och en borrmaskin innefattande en sådan slagöverföringsdel
JP7028772B2 (ja) * 2016-06-28 2022-03-02 古河ロックドリル株式会社 ２ピストン型油圧打撃装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647445A (en) * 1995-11-22 1997-07-15 National Research Council Of Canada Double piston in-the-hole hydraulic hammer drill

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998031509A1 (fr) * 1997-01-20 1998-07-23 Francesco Verardi Marteau hydraulique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647445A (en) * 1995-11-22 1997-07-15 National Research Council Of Canada Double piston in-the-hole hydraulic hammer drill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2099999A1 (fr) * 2007-01-11 2009-09-16 Atlas Copco Rock Drills AB Équipement de forage de roches et procédé en association avec celui-ci
EP2099999A4 (fr) * 2007-01-11 2010-06-02 Atlas Copco Rock Drills Ab Équipement de forage de roches et procédé en association avec celui-ci
US8453756B2 (en) 2007-01-11 2013-06-04 Atlas Copco Rock Drills Ab Rock drilling equipment and a method in association with same
CN103352895A (zh) * 2013-06-28 2013-10-16 山河智能装备股份有限公司 一种液压冲击器

Also Published As

Publication number Publication date
DE10024505A1 (de) 2001-11-29
EP1157787A1 (fr) 2001-11-28
DE50002726D1 (de) 2003-08-07
EP1157787B1 (fr) 2003-07-02

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