EP1157787A1 - 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
- EP1157787A1 EP1157787A1 EP00116974A EP00116974A EP1157787A1 EP 1157787 A1 EP1157787 A1 EP 1157787A1 EP 00116974 A EP00116974 A EP 00116974A EP 00116974 A EP00116974 A EP 00116974A EP 1157787 A1 EP1157787 A1 EP 1157787A1
- Authority
- 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.)
- Granted
Links
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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, where blows from a hydraulic driven piston are exerted on an anvil as well as a hydraulic striking mechanism for implementation such earth and stone work.
- Earth and stone works include drilling in the ground or rock, especially 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 is known a pipe rod 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.
- For 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 check piston is provided to knock out the drill pipe, 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.
- 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.
- the two working pistons run independently of one another and with different frequencies. It is assumed that usually the blows the working piston are staggered in time and only closed the strokes of both pistons at certain times collapse.
- 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 rate.
- bumping 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. Both can Working pistons are completely independently controlled, each separately become. Alternatively, control is possible where both working pistons have equal rights or one Control in which one of the working pistons has the master function and the other performs the slave function.
- the anvil acting blows exerted by different working pistons preferably have essentially the same masses. This means that the mass deviation is a maximum of 10% is. However, the masses can change 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 working 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. In the working stroke, the larger control area SF1 predominates force exerted is the force exerted on the smaller control surface SF2 Drag.
- 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 formed on its outer surface in the same way like the working piston AK1. It has two opposite directions Control surfaces SF1 and SF2, of which the control surface SF2 is constantly exposed to high pressure during the Pressure that acts 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.
- each working piston has its own control piston.
- 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.
- the working piston AK1 and the cylinder AZ1 trained in the same way as in the first embodiment.
- the working piston AK1 strikes the anvil surface 12 of the anvil 10.
- the piston AK2 and the working cylinder AZ2 are in the same way formed as in the first embodiment.
- the working piston AK2 is a ring piston, which is on the ring-shaped anvil surface 13 strikes.
- 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 AK2 working piston is in its rear end position, when the AK1 working piston reaches 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 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, only co-controlled 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.
Abstract
Description
- Fig. 1
- eine schematische Darstellung einer ersten Ausführungsform des Schlagwerks mit unabhängig voneinander gesteuerten Arbeitskolben,
- Fig. 2
- eine Ausführungsform, bei der die beiden Arbeitskolben sich gegenseitig steuern,
- Fig. 3
- eine Ausführungsform, bei der der eine Arbeitskolben mit einem Steuerkolben zusammenwirkt und dabei den anderen Arbeitskolben steuert,
- Fig. 4
- eine Ausführungsform, bei der ein Arbeitskolben mit einem Steuerkolben zusammenwirkt, während der Steuerkolben gleichzeitig den anderen Arbeitskolben steuert,
- Fig. 5
- eine ähnliche Ausführungsform wie Fig. 4, jedoch zusätzlich mit einem Umschaltorgan, mit dem eine von mehreren Betriebsarten ausgewählt werden kann, wobei in Fig. 5 eine dieser Betriebsarten dargestellt ist,
- Fig. 6
- das Umschaltorgan von Fig. 5 in einer zweiten Betriebsart und
- Fig. 7
- das Umschaltorgan von Fig. 5 in einer dritten Betriebsart.
Claims (15)
- Verfahren zum Durchführen von Erd- oder Gesteinsarbeiten, bei welchem Schläge von einem hydraulisch angetriebenen Arbeitskolben auf einen Amboß (10) ausgeübt werden,
dadurch gekennzeichnet, dass mit mindestens zwei gleichzeitig betriebenen Arbeitskolben (AK1,AK2) Schläge in gleicher Richtung auf den Amboß (10) ausgeübt werden. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass sämtliche Arbeitskolben (AK1,AK2) voneinander unabhängig gesteuert sind (Figur 1).
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Arbeitskolben (AK1,AK2) mit im wesentlichen gleichen Schlagfrequenzen betrieben werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass sämtliche Arbeitskolben (AK1,AK2) gemeinsam gesteuert sind, derart, dass sie mit gleichen Schlagfrequenzen und mit konstanter Phasenbeziehung betrieben werden.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass ein Arbeitskolben (AK2) als Steuerkolben mit einem anderen Arbeitskolben (AK1) zusammenwirkt (Figur 2).
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der eine Arbeitskolben (AK1) zur Erzeugung einer Schlagfrequenz mit einem Steuerkolben (SK) zusammenwirkt und dass der Steuerkolben (SK) einen zweiten Arbeitskolben (AK2) mitsteuert (Figur 3).
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der eine Arbeitskolben (AK1) mit einem Steuerkolben (SK1) zusammenwirkt und dabei einen zweiten Arbeitskolben (AK2) steuert.
- 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.
- Schlagwerk nach Anspruch 8, wobei jeder Arbeitskolben (AK1,AK2) mit einem eigenen Steuerkolben (SK1,SK2) zusammenwirkt (Figur 1).
- Schlagwerk nach Anspruch 8, wobei der eine Arbeitskolben (AK2) den Steuerkolben für den anderen Arbeitskolben (AK1) bildet (Figur 2).
- Schlagwerk nach Anspruch 8, wobei der eine Arbeitskolben (AK1) mit einem Steuerkolben (SK) zusammenwirkt und der Steuerkolben (SK) einen zweiten Arbeitskolben (AK2) mitsteuert.
- Schlagwerk nach Anspruch 8, wobei der eine Arbeitskolben (AK1) mit einem Steuerkolben (SK1) zusammenwirkt und dabei einen zweiten Arbeitskolben (SK2) steuert.
- Schlagwerk nach einem der Ansprüche 8 bis 12, wobei die Massen der Arbeitskolben (AK1,AK2) im wesentlichen gleich sind.
- Schlagwerk nach einem der Ansprüche 8 bis 13, wobei die Masse des leichteren Arbeitskolbens nicht weniger als 75 %, vorzugsweise nicht weniger als 65 %, der Masse des schweren Arbeitskolbens beträgt.
- Schlagwerk nach einem der Ansprüche 8-14, mit einem Umschaltorgan (34) zum Umschalten der Betriebsart der beiden Arbeitskolben (AK1,AK2) zwischen synchronem gleichphasigem Betrieb und gegenphasigem Betrieb.
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 true EP1157787A1 (de) | 2001-11-28 |
EP1157787B1 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 (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003039814A1 (en) * | 2001-11-07 | 2003-05-15 | Sandvik Tamrock Oy | Percussion device with a control valve for two alternately striking pistons |
WO2003074834A1 (en) * | 2002-03-05 | 2003-09-12 | Andrea Tonti | Drill equipped with vibrating hammer with eccentric masses for tool support |
EP2069602A1 (de) * | 2006-10-02 | 2009-06-17 | Atlas Copco Rock Drills AB | Schlagvorrichtung und steinbohrmaschine |
EP2704880A1 (de) * | 2011-05-03 | 2014-03-12 | Atlas Copco Rock Drills AB | Schlagelement und bohrmaschine mit einem schlagelement |
CN109414809A (zh) * | 2016-06-28 | 2019-03-01 | 古河凿岩机械有限公司 | 双活塞型液压冲击装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (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 EP EP00116974A patent/EP1157787B1/de not_active Expired - Lifetime
- 2000-08-08 DE DE50002726T patent/DE50002726D1/de not_active Expired - Fee Related
Patent Citations (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 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003039814A1 (en) * | 2001-11-07 | 2003-05-15 | Sandvik Tamrock Oy | Percussion device with a control valve for two alternately striking pistons |
CN100410025C (zh) * | 2001-11-07 | 2008-08-13 | 山特维克坦罗克有限公司 | 带有用于两个交替撞击活塞的控制阀的撞击装置 |
US7464635B2 (en) | 2001-11-07 | 2008-12-16 | Sandvik Mining And Construction Oy | Percussion device with a control valve for two alternately striking pistons |
WO2003074834A1 (en) * | 2002-03-05 | 2003-09-12 | Andrea Tonti | Drill equipped with vibrating hammer with eccentric masses for tool support |
EP2069602A1 (de) * | 2006-10-02 | 2009-06-17 | Atlas Copco Rock Drills AB | Schlagvorrichtung und steinbohrmaschine |
EP2069602A4 (de) * | 2006-10-02 | 2009-11-04 | Atlas Copco Rock Drills Ab | Schlagvorrichtung und steinbohrmaschine |
US9016396B2 (en) | 2006-10-02 | 2015-04-28 | Atlas Copco Rock Drills Ab | Percussion device and rock drilling machine |
EP2704880A1 (de) * | 2011-05-03 | 2014-03-12 | Atlas Copco Rock Drills AB | Schlagelement und bohrmaschine mit einem schlagelement |
EP2704880A4 (de) * | 2011-05-03 | 2014-09-17 | Atlas Copco Rock Drills Ab | Schlagelement und bohrmaschine mit einem schlagelement |
US9937613B2 (en) | 2011-05-03 | 2018-04-10 | Atlas Copco Rock Drills Ab | Striker member, and a drilling machine comprising a striker member |
CN109414809A (zh) * | 2016-06-28 | 2019-03-01 | 古河凿岩机械有限公司 | 双活塞型液压冲击装置 |
CN109414809B (zh) * | 2016-06-28 | 2022-04-15 | 古河凿岩机械有限公司 | 双活塞型液压冲击装置 |
Also Published As
Publication number | Publication date |
---|---|
DE10024505A1 (de) | 2001-11-29 |
EP1157787B1 (de) | 2003-07-02 |
EP1291487A1 (de) | 2003-03-12 |
DE50002726D1 (de) | 2003-08-07 |
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