EP1303679A1 - Rammbohrgerät - Google Patents
RammbohrgerätInfo
- Publication number
- EP1303679A1 EP1303679A1 EP01971744A EP01971744A EP1303679A1 EP 1303679 A1 EP1303679 A1 EP 1303679A1 EP 01971744 A EP01971744 A EP 01971744A EP 01971744 A EP01971744 A EP 01971744A EP 1303679 A1 EP1303679 A1 EP 1303679A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boring machine
- section
- ram boring
- control sleeve
- machine according
- 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
- 238000009527 percussion Methods 0.000 claims abstract description 15
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000036316 preload Effects 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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 an axially displaceable percussion piston, the forward and return movement of which engages in a cylinder space of the percussion piston and is connected to a supply hose by means of a guide tube and acted upon axially by a spring, and one or more corresponding control openings in the Percussion piston is controlled, the guide tube for reversing from forward to reverse running between two stops located in a guide sleeve arranged at the rear end of the housing, axially displaceable and locked in the position for forward running by rotation and takes the priority of German patent application 100 34 471.2 to which reference is made in terms of content.
- Such a ram boring machine is described in German specification 25 37 176.
- the control sleeve penetrates a guide fixed to the housing; stops of the guide and the control sleeve ensure axial locking during operation.
- the rotation lock can be released so that the control sleeve can be moved axially backwards, which is supported by a spring.
- the switch from reverse to forward running which is only possible in an absolutely depressurized state, has a disadvantageous effect, in particular in water-containing soils, since water and dirt can quickly penetrate into the device which is switched off for reversing and the device then no longer starts.
- a ram boring machine is known from German patent specification 39 096 567, in which reversing under pressure is possible without additional remote actuation of locks by the guide tube for reversing forward and reverse running being axially displaceable between two stops and being lockable in the position for forward running by rotation is guided, wherein the control sleeve is acted upon by the spring in the direction of the position for forward running and by elastic means for rotation and the guide tube has additional rotary stops for locking and unlocking in the axial direction.
- this ram boring machine it must be checked before use whether the device is set to forward, since the control sleeve can possibly be locked in the position for the return.
- the invention has for its object to improve a ram boring machine of the type mentioned in such a way that reversing under pressure is possible without additional remote actuation of locks, the ram boring machine automatically being set to forward again after each return.
- control sleeve has at least one additional rotary stop for locking and unlocking in the axial direction by the spring in the direction of the position for the forward run and the guide tube for the reverse run by pressurization is held in a defined position.
- the control sleeve is preferably also subjected to rotation by elastic means in the direction of the position for the forward running by elastic means.
- control sleeve which is rotatably limited in the guide sleeve, is turned from a turning stop to a certain radian by means of the supply hose twisted other rotary stop and thereby unlocked in the axial direction.
- the axial preload by the spring is dimensioned so that the control sleeve overcomes the spring preload when the pressure is fully applied and moves the control sleeve backwards.
- control sleeve After the control sleeve has hit the axial stop preventing further displacement, it remains in this position during reverse travel as long as pressure is exerted. To switch from reverse to forward, the effective pressure is only reduced until the axial spring preload is greater than the pressure acting on the control sleeve in the opposite direction. In this case the control sleeve is automatically, e.g. also in the rest position, moved to the front position and brought back into the locking position there by the elastic means which also act on the control sleeve for rotation. Then the pressure can be increased again.
- a cylindrical helical spring acting on the control sleeve is arranged in a rotationally fixed manner between the control sleeve and the guide sleeve under torsional prestress.
- the control sleeve can advantageously be connected to the supply hose by means of a guide tube which has two spaced-apart axial stops and a pipe section with a non-circular cross section, and an opening with a cross section which is complementary to the non-round cross section of the pipe section.
- An elastic bushing is advantageously arranged between the control sleeve and the guide tube. It can be achieved that the control sleeve, even in the event of manufacturing inaccuracies, slides centrally and without jamming in the cylinder space of the percussion piston.
- the rotary stops or the rotary stop are preferably formed by projections arranged in the circumferential grooves and interacting with the non-circular opening in the guide sleeve.
- the non-round cross section of the tube section can be formed by at least one flattening of the circular cross section.
- the projections can advantageously be formed by at least one arcuate section with a radius extending to the flattening and at least two straight surfaces running tangentially from the arcuate section to the radius of the pipe section at a distance from one another.
- a preferred embodiment is one in which the non-circular cross section of the tube section is formed by two parallel flats and by two projections with diametrically opposite circular arc sections and tangential, straight surfaces adjoining them at an angle of approximately 90 °. With this version, it is sufficient to Turn the hose and thus the control sleeve by 90 ° to unlock and axially move the guide sleeve.
- the axial preload and the torsional preload of the cylindrical helical spring arranged between the control sleeve and the guide sleeve can be adjusted particularly easily if the ends of the cylindrical helical spring are bent axially according to the invention and engage in pockets in the control sleeve and in the guide sleeve.
- Several circumferentially distributed pockets can be arranged in the control sleeve and in the guide sleeve, so that the end of the cylindrical helical spring can be inserted into different pockets and the torsional preload can thereby be changed.
- the coil spring which is preferably designed as a coil spring, can be wound in such a way that its diameter decreases with increasing torsional preload.
- Figure 1 is a section of a partially shown ram boring machine with the control sleeve set forwards.
- FIG. 2 shows a section of a ram boring machine partially shown with the control sleeve set to reverse running
- FIG. 3 shows the ram boring machine according to FIG. 1 cut along the line III-III;
- FIGS. 1 and 2 cut the ram boring machine according to FIG. 1 along the line IV-IV. Only the rear part of a ram boring machine is shown in FIGS. 1 and 2.
- the ram boring machine consists of a housing 1 in which a percussion piston 8 moves back and forth. When rushing forward, the head of the percussion piston 8 hits a pin of a percussion tip projecting into the housing 1.
- a control sleeve 3 is arranged in a sealed manner in a cylinder space 9 of the percussion piston 8.
- the control sleeve 3 is connected via an elastic bushing 4 to a guide tube 2, which in turn is supported in a guide sleeve 5.
- the guide sleeve 5 is screwed via a connection 25 to the rear end of the housing 1 and surrounded by a vent block 6, via which the compressed air used for pressurization escapes to the outside when the percussion piston 8 has moved back so far over the control sleeve 3 and its control openings 11 behind the control edges of the control sleeve 3 have reached.
- a supply hose 10, via which compressed air is supplied, is connected to the guide tube 2 in a pressure-tight and rotationally fixed manner.
- a cylindrical coil spring 7 is arranged, which is under axial and torsional preload.
- the ends 12 of the coil spring 7 are bent axially and fixed in pockets 13 of both the control sleeve 3 and the guide sleeve 5 against rotation.
- a circumferential groove acting as a stop 14 is arranged in the area of the rear end of the guide tube 2.
- this circumferential groove 14 there is a tube section 15 of the guide tube 2, which has two parallel flats 17.
- a recess 16 which is complementary to the cross section of the pipe section 15 is arranged in the guide sleeve 5 surrounding the pipe section 15.
- the guide tube 2 can be axially displaced in the guide sleeve 5 if the tube section 15 with its flats 17 is aligned with the recess 16 accordingly.
- the guide tube 2 can be used between two turn jumps formed rotary stops 18 in the circumferential grooves 14 by 90 °.
- the rotary stops (projections) 18 are formed by diametrically opposed circular arc-shaped sections 19 and adjoining tangential, straight surfaces 20 which run at an angle of 90 ° to one another. These tangential, straight surfaces 20 bear against the inner surfaces of webs 22 of the recess 16; they allow the guide tube 2 to be rotated through 90 ° in the guide sleeve 5.
- the guide tube 2 Due to the torsional preload of the cylindrical coil spring 7, the guide tube 2 is rotated into a position in which the tube section 15 is rotated by 90 ° to the recess 16 and abuts the webs 22. An axial displacement of the guide tube 2 with the control sleeve 3 is not possible in this position. Alternatively or additionally, a groove can be provided which makes it difficult or impossible to turn the guide tube back.
- the guide tube 2 with the control sleeve 3 is in the position shown in FIG. 1, in which the full pressure of the pressure medium supplied via the supply hose 10 reaches the cylinder space 9 through the bore 21 in the guide tube 2, acts on the front surface of the control sleeve 3 a pressure overcoming the bias of the cylindrical coil spring 7, and the control sleeve 3 with the guide tube 2 is moved back into the position shown in FIG.
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)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10034471A DE10034471B4 (de) | 2000-07-15 | 2000-07-15 | Rammbohrgerät |
DE10034471 | 2000-07-15 | ||
PCT/EP2001/007496 WO2002006624A1 (de) | 2000-07-15 | 2001-06-29 | Rammbohrgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1303679A1 true EP1303679A1 (de) | 2003-04-23 |
EP1303679B1 EP1303679B1 (de) | 2005-12-21 |
Family
ID=7649054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01971744A Expired - Lifetime EP1303679B1 (de) | 2000-07-15 | 2001-06-29 | Rammbohrgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1303679B1 (de) |
AU (1) | AU2001291660A1 (de) |
DE (2) | DE10034471B4 (de) |
WO (1) | WO2002006624A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10255775A1 (de) * | 2002-11-29 | 2004-06-09 | Robert Bosch Gmbh | Scheibenwischvorrichtung, insbesondere für ein Kraftfahrzeug |
DE102009038383B4 (de) | 2009-08-24 | 2014-10-16 | Tracto-Technik Gmbh & Co. Kg | Rammbohrvorrichtung |
CN113530446B (zh) * | 2020-04-15 | 2024-07-26 | 中国石油化工股份有限公司 | 一种鱼骨刺井的钻管回收装置和钻进装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2537176B1 (de) * | 1975-08-21 | 1976-12-09 | Jenne & Strahm Ag | Steuervorrichtung fuer den vor- und ruecklauf von selbstgetriebenen pneumatischen rammbohrgeraeten |
JPS595756B2 (ja) * | 1979-07-02 | 1984-02-07 | インステイチユト ゴルノゴ デラ エスオ− エ−エヌ エスエスエスア−ル | 可逆衝撃装置 |
SU1313972A1 (ru) * | 1983-06-08 | 1987-05-30 | Институт Горного Дела Со Ан Ссср | Реверсивное устройство ударного действи дл проходки скважин в грунте |
US4662457A (en) * | 1984-10-19 | 1987-05-05 | Allied Steel & Tractor Products, Inc. | Reversible underground piercing device |
DE3909567A1 (de) * | 1989-03-23 | 1990-09-27 | Schmidt Paul | Rammbohrgeraet |
DE4109215A1 (de) * | 1991-03-21 | 1992-09-24 | Tracto Technik | Rammbohrgeraet |
-
2000
- 2000-07-15 DE DE10034471A patent/DE10034471B4/de not_active Expired - Lifetime
-
2001
- 2001-06-29 WO PCT/EP2001/007496 patent/WO2002006624A1/de active IP Right Grant
- 2001-06-29 DE DE50108474T patent/DE50108474D1/de not_active Expired - Lifetime
- 2001-06-29 AU AU2001291660A patent/AU2001291660A1/en not_active Abandoned
- 2001-06-29 EP EP01971744A patent/EP1303679B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0206624A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1303679B1 (de) | 2005-12-21 |
WO2002006624A1 (de) | 2002-01-24 |
DE10034471A1 (de) | 2002-01-24 |
DE50108474D1 (de) | 2006-01-26 |
AU2001291660A1 (en) | 2002-01-30 |
DE10034471B4 (de) | 2009-08-13 |
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