EP1157787B1 - Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk - Google Patents
Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk Download PDFInfo
- Publication number
- EP1157787B1 EP1157787B1 EP00116974A EP00116974A EP1157787B1 EP 1157787 B1 EP1157787 B1 EP 1157787B1 EP 00116974 A EP00116974 A EP 00116974A EP 00116974 A EP00116974 A EP 00116974A EP 1157787 B1 EP1157787 B1 EP 1157787B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working
- piston
- control
- pistons
- anvil
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000002689 soil Substances 0.000 title 1
- 239000011435 rock Substances 0.000 claims description 8
- 238000009527 percussion Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 239000004575 stone Substances 0.000 description 3
- 230000035559 beat frequency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- 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 Rock work, in which blows of two hydraulic driven piston are exerted on an anvil and a hydraulic striking mechanism for performing such Earthworks 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.
- 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 two working pistons run independently of each other and with different frequencies. It is assumed that usually the strokes of the working pistons in time are offset from each other and only at certain times the strokes of both pistons coincidentally coincide.
- 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 on 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 is additionally provided, the hollow or tubular is aligned and the annular Anvil surface 13 strikes.
- the AK2 working piston is basically designed in the same way on its outer surface like the working piston AK1. It has two opposing directions Control surfaces SF1 and SF2, of which the control surface SF2 is constantly exposed to high pressure during the Pressure acting on the control surface SF1 through the control piston SK2 is changed.
- the control piston SK2 oversteers the control line 17a, the working piston AK2 and the working piston AK2 controls the control piston via the control line 22a SK2.
- the control piston SK2 is designed in the same way as the control piston SK1. He is also on 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.
- Every working piston has its own spool. The movements of the working pistons are therefore not synchronized. Since not to be assumed is that both working pistons are at exactly the same frequency operated, there are irregular impact sequences.
- 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.
Landscapes
- 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)
Description
- Fig. 1
- eine schematische Darstellung einer ersten Ausführungsform des Schlagwerks mit unabhängig voneinander gesteuerten Arbeitskolben.
Claims (5)
- Verfahren zum Durchführen von Erd- oder Gesteinsarbeiten, bei welchem von mindestens zwei hydraulisch angetriebenen, gleichzeitig betriebenen Arbeitskolben (AK1,AK2) Schläge in gleicher Richtung auf einen Amboss (10) ausgeübt werden,
dadurch gekennzeichnet, dass sämtliche Arbeitskolben (AK1,AK2) voneinander unabhängig gesteuert sind. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Arbeitskolben (AK1,AK2) mit im wesentlichen gleichen Schlagfrequenzen synchron betrieben werden.
- Hydraulisches Schlagwerk für Erd- und Gesteinsarbeiten, mit mindestens zwei gleichzeitig hydraulisch betreibbaren Arbeitskolben (AK1,AK2), die Schläge in gleicher Richtung auf einen mit einem Arbeitswerkzeug verbundenen Amboss (10) ausüben, dadurch gekennzeichnet, dass jeder Arbeitskolben (AK1,AK2) mit einem eigenen Steuerkolben (SK1,SK2) zusammenwirkt.
- Schlagwerk nach Anspruch 3, wobei die Massen der Arbeitskolben (AK1,AK2) im wesentlichen gleich sind.
- Schlagwerk nach Anspruch 3 oder 4, wobei die Masse des leichteren Arbeitskolbens nicht weniger als 75 %, vorzugsweise nicht weniger als 65 %, der Masse des schweren Arbeitskolbens beträgt.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02025773A EP1291487A1 (de) | 2000-05-18 | 2000-08-08 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
| US09/854,460 US6557652B2 (en) | 2000-05-18 | 2001-05-15 | Method for performing ground or rock work and hydraulic percussion device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10024505A DE10024505A1 (de) | 2000-05-18 | 2000-05-18 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
| DE10024505 | 2000-05-18 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02025773A Division EP1291487A1 (de) | 2000-05-18 | 2000-08-08 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1157787A1 EP1157787A1 (de) | 2001-11-28 |
| EP1157787B1 true EP1157787B1 (de) | 2003-07-02 |
Family
ID=7642620
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02025773A Withdrawn EP1291487A1 (de) | 2000-05-18 | 2000-08-08 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
| EP00116974A Expired - Lifetime EP1157787B1 (de) | 2000-05-18 | 2000-08-08 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02025773A Withdrawn EP1291487A1 (de) | 2000-05-18 | 2000-08-08 | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk |
Country Status (2)
| Country | Link |
|---|---|
| EP (2) | EP1291487A1 (de) |
| DE (2) | DE10024505A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2012251138B2 (en) * | 2011-05-03 | 2016-11-03 | Epiroc Rock Drills Aktiebolag | A striker member, and a drilling machine comprising a striker member |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI115957B (fi) * | 2001-11-07 | 2005-08-31 | Sandvik Tamrock Oy | Kaksimäntäinen iskulaite |
| AU2002247961A1 (en) * | 2002-03-05 | 2003-09-16 | Alessandro Tonti | Drill equipped with vibrating hammer with eccentric masses for tool support |
| SE531658C2 (sv) * | 2006-10-02 | 2009-06-23 | Atlas Copco Rock Drills Ab | Slagverk jämte bergborrmaskin och bergborrigg |
| SE530781C2 (sv) | 2007-01-11 | 2008-09-09 | Atlas Copco Rock Drills Ab | Bergborrutrustning och metod i anslutning till denna |
| CN103352895B (zh) * | 2013-06-28 | 2015-08-26 | 山河智能装备股份有限公司 | 一种液压冲击器 |
| KR102256436B1 (ko) * | 2016-06-28 | 2021-05-25 | 후루까와 로크 드릴 가부시끼가이샤 | 2 피스톤형 유압타격장치 |
Family Cites Families (2)
| 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 |
| WO1998031509A1 (en) * | 1997-01-20 | 1998-07-23 | Francesco Verardi | Fluid operated hammer |
-
2000
- 2000-05-18 DE DE10024505A patent/DE10024505A1/de not_active Withdrawn
- 2000-08-08 EP EP02025773A patent/EP1291487A1/de not_active Withdrawn
- 2000-08-08 DE DE50002726T patent/DE50002726D1/de not_active Expired - Fee Related
- 2000-08-08 EP EP00116974A patent/EP1157787B1/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2012251138B2 (en) * | 2011-05-03 | 2016-11-03 | Epiroc Rock Drills Aktiebolag | A striker member, and a drilling machine comprising a striker member |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10024505A1 (de) | 2001-11-29 |
| EP1157787A1 (de) | 2001-11-28 |
| EP1291487A1 (de) | 2003-03-12 |
| DE50002726D1 (de) | 2003-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2928445C2 (de) | Bohrwerkzeug mit ringförmiger Schneidkante | |
| EP0133161B1 (de) | Verfahren und Vorrichtung zur Dämpfung des Rückpralles bei Schlagwerkzeugen | |
| DE3710162C1 (de) | Rammbohrgeraet mit beweglichem Meissel | |
| EP0494408B1 (de) | Verfahren zum Aufweiten eines Bohrloches und Aufweitgerät | |
| DE1940836C3 (de) | Hydraulische Schlag- oder Drehschlagbohrmaschine | |
| DE2157259B1 (de) | Rammbohrgerät | |
| DE2343079C2 (de) | Vorrichtung zum im wesentlichen horizontalen Durchbohren eines Dammes o.dgl. | |
| DE19833650A1 (de) | Handbohrgerät | |
| EP1769131B1 (de) | Bohrkopf für ein erdbohrgerät | |
| DE10112985B4 (de) | Schlagbohrkopf und ein Verfahren zum Horizontalbohren mit einem Schlaggerät | |
| EP1157787B1 (de) | Verfahren zur Durchführung von Erd- oder Gesteinsarbeiten und hydraulisches Schlagwerk | |
| DE1923512A1 (de) | Schlagwerkzeug | |
| DE3124524C2 (de) | Rammvorrichtung für selbstgetriebene pneumatische Rammbohrgeräte | |
| DE3842891A1 (de) | Rotationsbohrverfahren und rotationsbohreinrichtung zur durchfuehrung des verfahrens | |
| DE2107510C3 (de) | Hydraulisches Schlagwerkzeug | |
| EP0847836B1 (de) | Fluidbetriebenes Schlagwerk | |
| EP0731248A1 (de) | Schlaggerät | |
| DE3590831C2 (de) | D{mpfungseinrichtung f}r Schlagh{mmer von Vorrichtungen zum Auffahren von Grubenbauen in hartem Gestein | |
| EP0723492B1 (de) | Schlagelement | |
| CH686837A5 (de) | Fluidbetaetigter Schlaghammer. | |
| DE2053336A1 (de) | Mittels eines elastischen Druck mediums antreibbarer Motor | |
| DE4424080C1 (de) | Hydraulischer Schlaghammer | |
| DE102004032551A1 (de) | Bohrkopf und Verfahren zum Erzeugen oder Aufweiten eines Bohrlochs über eine schlagend vorgetriebene Vorrichtung | |
| DE206630C (de) | ||
| DE1909622C3 (de) | Vorrichtung zum Überlagerungsbohren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20010301 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Kind code of ref document: A1 Designated state(s): DE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| AKX | Designation fees paid |
Free format text: DE |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): DE |
|
| REF | Corresponds to: |
Ref document number: 50002726 Country of ref document: DE Date of ref document: 20030807 Kind code of ref document: P |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20031010 Year of fee payment: 4 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20040405 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050301 |