EP0384888B1 - Dispositif de forage - Google Patents
Dispositif de forage Download PDFInfo
- Publication number
- EP0384888B1 EP0384888B1 EP19900810078 EP90810078A EP0384888B1 EP 0384888 B1 EP0384888 B1 EP 0384888B1 EP 19900810078 EP19900810078 EP 19900810078 EP 90810078 A EP90810078 A EP 90810078A EP 0384888 B1 EP0384888 B1 EP 0384888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- feed
- valve
- piston
- percussion
- throttle
- 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
- 238000005553 drilling Methods 0.000 title claims description 17
- 238000009527 percussion Methods 0.000 claims description 11
- 230000001419 dependent effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 2
- 239000011435 rock Substances 0.000 description 14
- 230000002349 favourable effect Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/02—Automatic control of the tool feed
- E21B44/06—Automatic control of the tool feed in response to the flow or pressure of the motive fluid of the drive
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/41—Flow control characterised by the positions of the valve element
- F15B2211/413—Flow control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
Definitions
- the present invention relates to a rock drilling device for mining and tunnel construction in relatively soft rock, where rotary impact boring mills are advantageous and zones of different hardness have to be traversed.
- Such devices have a rotating mechanism for rotating the boring bar, an impact mechanism for hitting the boring bar and a feed drive.
- the speed of the rotating mechanism, the frequency and impact performance of the impact mechanism and the feed can usually be set. The setting depends on the type of rock to be drilled and is based on experience. However, it often happens that different types of rock are drilled during the advance. The set works are then selected for the hardest rock and are not optimal for softer layers, which leads to low propulsive power and increased tool wear.
- a drilling device is known from CH-A 657 664.
- This document describes a hammer drilling device with a rotating mechanism, a hammer mechanism and a feed drive.
- the control pressure on a control valve is taken from the feed line of the feed drive.
- a certain adaptation of the stroke frequency to the feed performance is indeed possible.
- an optimal adaptation of the speed and impact frequency to different rock hardness cannot be achieved.
- US-A-4 246 973 and US-A-4 356 871 describe further drilling devices in which the pressure to the striking mechanism, the pressure to the rotating mechanism and the pressure to the feed drive depend on one another.
- the stroke frequency is made dependent either on the torque of the slewing gear or the feed force.
- the present invention has for its object to provide a drilling device of the type mentioned in such a way that optimal drilling performance in different rocks species can be achieved. This object is achieved by the characterizing features of claim 1.
- the working parts of the drilling device are only indicated schematically in FIG. 1. They consist of a rotating mechanism 1 for rotating a boring bar 2, a striking mechanism 3 for hitting the boring bar 2 and a feed drive 4 for advancing the drilling device 1, 2, 3.
- the device also has a first control device 5 for adjusting the speed of the rotating mechanism 1 and the impact frequency and impact power of the impact mechanism 3, and a second control device 6 for adjusting the feed force and speed.
- the slewing gear 1 consists of a hydraulic motor 10 with an output shaft 11 which is non-rotatably connected to the boring bar 2.
- the striking mechanism 3 consists of a striking cylinder 12 in which a striking piston 13 is driven back and forth.
- the Percussion piston 13 strikes against the rear end face of boring bar 2, preferably via an anvil, not shown.
- Rotary mechanism 1 and percussion mechanism 3 are arranged in a common housing, not shown, which additionally contains a rotary slide valve 14 for controlling the percussion mechanism 3.
- the rotary valve 14 is driven by the shaft 11 via a gear 15.
- the impact frequency is exactly proportional to the speed of the slewing gear 1. This has proven to be extremely favorable for the optimal adaptation of the speed and impact frequency to different rock hardness.
- the boring bar 2 makes a predetermined angle of rotation between two successive strokes, which is independent of the speed.
- 14 pressure accumulators 18 are arranged in these lines adjacent to the rotary valve.
- a four / three-way switching valve 23 is connected between the hydraulic motor 10 and the feed line 21 and the return line 22, so that the motor 10 can be operated clockwise or counterclockwise.
- a parallel connection of an adjustable throttle 26 and a check valve 27 is arranged in each of the lines 24, 25 between the valve 23 and the motor 10.
- the throttles 26 act as flow regulators and are used to adjust the basic speed of the motor 10 for RIGHT or left rotation.
- motor 10 turns left with line 24 is connected to the feed line 21.
- a proportional control valve 28 is connected in this line 24 in parallel to the valve 23 and the throttle 26. The valve 28 opens against the force of a spring 29 proportional to the pressure in its control line 30 and therefore acts on the motor 10 via the bypass line 31 with additional hydraulic oil, so that it rotates faster in proportion to the pressure in the line 30.
- the feed drive 4 comprises a hydraulic cylinder 35 with a piston 36 and a piston rod 37 which is connected to the housing of the rotating and striking mechanism 1, 3 (not shown).
- the two chambers 38, 39 of the cylinder 35 are connected via a further four / three-way valve 40 to a further feed line 41 and return line 42.
- a double pilot-controlled pressure control valve 44 preloaded with an adjustable spring force, is connected in line 43 between valve 40 and feed chamber 39.
- the two pilot pressures to the valve 44 are connected to the two chambers 38, 39. Through the valve 44, the pressure of the boring bar 2 can thus be limited to an adjustable value independently of the pressure in the chamber 38 during the advance.
- the line 45 to the chamber 38 is connected to the valve 40 via a three / two-way valve 46 in its first switching position via an adjustable quantity regulator 47.
- the quantity controller 47 limits the feed rate.
- the line 45 is connected to a variable throttle 56 via a connecting line 55.
- the drain 57 leads to the tank 58 via an adjustable pressure control valve 54.
- This control valve 54 maintains the response pressure of the proportional control valve 28 even when the flow through the throttle 56 is low.
- the control line 30 is connected to the line 55.
- the throttle 56 is shown in section in FIG. 2.
- a plunger 63 is slidably mounted in a cylindrical bore 61 of a housing 62.
- the piston 63 penetrates a sharp-edged diaphragm 64 with sliding play.
- the orifice 64 separates an input chamber 65 connected to the line 55 from an output chamber 66 connected to the line 57 in the housing 62.
- a spring 67 presses against the end face of the piston 63.
- the piston 63 bears against a cover 69 at the rear.
- the piston 63 has centrally symmetrically arranged, increasingly deepening to the rear, axial grooves 70 on its circumferential surface.
- the cross section of the grooves 70 increases with the axial distance from the spring-side end of the piston 63.
- the throttle cross section thus increases steadily with the stroke of the piston 63, which in turn is proportional to the difference in pressure in the chambers 65, 66.
- the increase in cross section of the grooves 70 with the stroke of the piston 63 is expediently designed such that the dynamic pressure which forms in the line 55 is proportional to the flow rate through the throttle 56. If the valve 28 opens linearly, then the speed increase of the hydraulic motor 10 is proportional to the feed rate.
- a borehole is started with the valve 46 in the neutral position shown.
- the pressure control valve 44 is used to set the optimum pressure for the hardest rock layer of the borehole to be expected.
- the setting of the throttle 26 also depends on the hardest rock layer to be expected.
- the quantity regulator 47 which is only decisive for the drilling, is set to the optimum feed rate for the rock to be drilled through first. As soon as the borehole has been drilled, the valve 46 is switched over. If the drill bit encounters softer rock during drilling, the feed rate increases due to the constant pressure.
- the start of the connection of the bypass 31 can be set by the screw 68. If an adjustment of the speed dependence is desired, the spring constant of the spring 67 'can be made variable, as shown in Fig. 3.
- the spring 67 ' is designed here as a spiral spring. With a shoe 73, the free length of the spring 67 'and thus the spring constant can be set here.
- the shoe 73 is displaceable by an adjusting screw 74.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH66089 | 1989-02-23 | ||
CH660/89 | 1989-02-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0384888A1 EP0384888A1 (fr) | 1990-08-29 |
EP0384888B1 true EP0384888B1 (fr) | 1992-06-10 |
Family
ID=4192175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900810078 Expired - Lifetime EP0384888B1 (fr) | 1989-02-23 | 1990-02-05 | Dispositif de forage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0384888B1 (fr) |
AU (1) | AU630914B2 (fr) |
DE (1) | DE59000150D1 (fr) |
FI (1) | FI90277C (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI115552B (fi) | 2002-11-05 | 2005-05-31 | Sandvik Tamrock Oy | Järjestely kallioporauksen ohjaamiseksi |
SE532483C2 (sv) | 2007-04-11 | 2010-02-02 | Atlas Copco Rock Drills Ab | Metod, anordning och bergborrningsrigg för styrning av åtminstone en borrparameter |
CN102536141B (zh) * | 2012-01-20 | 2013-11-06 | 中船重工中南装备有限责任公司 | 一种凿岩钻车的自动换钎控制*** |
CN103758802B (zh) * | 2014-01-24 | 2016-01-13 | 长沙金阳机械设备科技开发有限公司 | 自动钻进液压控制***及作业车 |
DE102015107194A1 (de) * | 2015-05-08 | 2016-11-10 | TERRA AG für Tiefbautechnik | Bohranlage zum Erzeugen oder Aufweiten einer Erdbohrung im Erdreich und Verfahren zur Steuerung eines Vorschubantriebs einer solchen Bohranlage |
CN106351900B (zh) * | 2016-09-27 | 2018-12-18 | 桂林航天工业学院 | 一种防偏斜凿岩控制*** |
CN111101859A (zh) * | 2019-11-08 | 2020-05-05 | 四川诺克钻探机械有限公司 | 一种铁路工程勘探用取芯钻机钻压调节方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064950A (en) * | 1976-07-19 | 1977-12-27 | Pekka Salmi | Hydraulic drilling machine |
US4271914A (en) * | 1976-12-02 | 1981-06-09 | The United States Of America As Represented By The Secretary Of The Interior | Automatic feed and rotational speed control system of a hydraulic motor operated drill |
US4246973A (en) * | 1978-01-23 | 1981-01-27 | Cooper Industries, Inc. | Controls for hydraulic percussion drill |
US4440236A (en) * | 1979-09-20 | 1984-04-03 | Toyo Kogyo Co. Ltd. | Hydraulic control system for a rock drill |
JPS5655684A (en) * | 1979-10-06 | 1981-05-16 | Toyo Kogyo Co | Feed controller circuit for hydraulic rock driller |
DE3115361A1 (de) * | 1981-04-16 | 1982-10-28 | Hydroc Gesteinsbohrtechnik GmbH, 5960 Olpe | "hydraulische schlagvorrichtung" |
FI67604C (fi) * | 1983-06-14 | 1985-04-10 | Tampella Oy Ab | Foerfarande och anordning foer reglering av matningsroerelsen hos en borrstaong vid bergborrning |
DE3518892C1 (de) * | 1985-05-25 | 1987-02-26 | Klemm Bohrtech | Hydraulische Schlagbohrvorrichtung |
-
1990
- 1990-02-05 EP EP19900810078 patent/EP0384888B1/fr not_active Expired - Lifetime
- 1990-02-05 DE DE9090810078T patent/DE59000150D1/de not_active Expired - Fee Related
- 1990-02-06 AU AU49174/90A patent/AU630914B2/en not_active Expired
- 1990-02-20 FI FI900834A patent/FI90277C/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0384888A1 (fr) | 1990-08-29 |
FI90277C (fi) | 1994-01-10 |
DE59000150D1 (de) | 1992-07-16 |
FI900834A0 (fi) | 1990-02-20 |
AU4917490A (en) | 1990-08-30 |
AU630914B2 (en) | 1992-11-12 |
FI90277B (fi) | 1993-09-30 |
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