EP0145701A1 - Regulation d'une foreuse à percussion - Google Patents

Regulation d'une foreuse à percussion Download PDF

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Publication number
EP0145701A1
EP0145701A1 EP84890204A EP84890204A EP0145701A1 EP 0145701 A1 EP0145701 A1 EP 0145701A1 EP 84890204 A EP84890204 A EP 84890204A EP 84890204 A EP84890204 A EP 84890204A EP 0145701 A1 EP0145701 A1 EP 0145701A1
Authority
EP
European Patent Office
Prior art keywords
pressure medium
line
pressure
feed motor
actuator
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
Application number
EP84890204A
Other languages
German (de)
English (en)
Other versions
EP0145701B1 (fr
Inventor
Gustav Dr. Schatzmayr
Konrad Schön
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vereinigte Edelstahlwerke AG
Original Assignee
Vereinigte Edelstahlwerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vereinigte Edelstahlwerke AG filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0145701A1 publication Critical patent/EP0145701A1/fr
Application granted granted Critical
Publication of EP0145701B1 publication Critical patent/EP0145701B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/67—Methods for controlling pilot 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
    • F15B2211/7058—Rotary output 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

Definitions

  • the invention relates to a device for percussion drilling, the pressure medium supply to the individual motors being controlled as a function of the power to be provided.
  • the drill steel has to be rotated by means of a rotary motor, on the other hand, another motor is required for the application of individual blows on the drill steel.
  • a separate feed motor must also be provided for the drilling steel in the rock in machine-held drilling machines.
  • the performance of the slewing gear, the striking mechanism and the feed motor must be closely coordinated. However, this coordination is extremely difficult given the diversity of the material to be drilled. If the feed of the drilling unit is too large, it can e.g. come to a so-called hard drilling, whereby either the drill steel or the motors actuating the same can be damaged.
  • a hydraulic drilling machine for impact drilling which has a rotating mechanism, an impact mechanism and a feed motor.
  • the slewing gear, the striking mechanism and the feed motor are hydraulically connected to one another, three hydraulic pumps operating independently of one another being provided.
  • the hydraulic circuit of the feed motor has an on and off valve.
  • the hydraulic circuit for the slewing gear is connected to the hydraulic switching circuit for the striking mechanism via a valve. The task of this valve is to open when the pressure in the slewing ring is too low in order to adjust the pressure between the hydraulic circuit for the striking mechanism and that for the slewing gear.
  • the inertia is due to the fact that the pressure increase in the slewing gear circuit reduces the Pressure in the percussion mechanism circuit is caused, where then the direction of rotation of the feed motor is reversed by the reduced pressure in the percussion mechanism circuit.
  • the direction of movement of the feed motor is only reversed again when a corresponding increase in pressure has occurred in the percussion mechanism circuit.
  • the drill carries out empty blows or not full blows against the rock during the forward movement, so that there must be corresponding long-term damage to the machine.
  • the resistance in the rock is particularly low, whether due to cavities, inclusions of particularly soft rock, a drop in pressure in the striking mechanism may occur, which again causes the drilling unit to be withdrawn, but this is not justified in terms of drilling technology.
  • the invention has for its object to provide a device for striking drilling, which allows so-called hard drilling of the drilling steel in the rock to be avoided with the most varied properties of the rock and large drilling progress, while at the same time unnecessary delays during switching and also blows the Device should be avoided.
  • valves or the like whereby from the pressure medium line, in particular the pressure medium supply line, of the slewing gear, a control line, possibly having the working medium, is provided to an actuator in the pressure medium line of the striking mechanism, there essentially exists union that the pressure medium feed lines to turning, percussion and feed motor are connected separately from one another or parallel, and control line (s) of the pressure medium line of the rotating mechanism, controllable in particular immediately before the same to d s, in particular by excess pressure in the pressure medium feed lines for turning , Actuators are provided in the pressure medium lines to the striking mechanism, feed motor and, if necessary, slewing gear.
  • Such a device ensures that when the pressure rises, e.g.
  • the pressure medium supply to the striking mechanism can either be throttled or stopped via a threshold value in the slewing gear - as occurs in the case of greater resistance in the rock - and at the same time the feed motor can be controlled directly by changing the direction of rotation in the circuit of the slewing gear.
  • Such a device thus ensures that the impact energy can be reduced or reduced to zero when the pressure in the feed line of the rotating mechanism is increased, the drill being pulled out of the borehole.
  • the pressure in front of the slewing gear thus drops again, so that, at the same time or with appropriate throttles, the direction of movement of the feed motor is reversed again and the impact energy in the striking mechanism can be increased again.
  • At least one control line is connected to an actuator in a further control line with its own control medium, in particular compressed air, the further control line being connected to an actuator of the pressure medium line, in particular pressure medium supply line, the actuators can be operated particularly simply and effectively, with the expenditure on equipment is to be kept particularly low.
  • a pressure-actuated electrical switch is provided in the pressure medium line of the slewing gear, which opens or closes an electrical circuit when the pressure falls below and / or falls below one or more pressures and controls at least one electrically actuated actuator in a pressure medium line, a particularly high variety of controls can be used are carried out, delays and particularly rapid reactions, which can take into account the machine sizes particularly advantageously, can be provided by electrical circuits.
  • the pressure medium circuit 1 serves to actuate the rotary motor 7.
  • An actuator 8 is provided in the pressure medium circuit, which on the one hand can short-circuit the pressure medium circuit from the pump 4 (shown illustration) or allows two different speeds of the rotating mechanism.
  • the actuator 8, for example a valve spool can be actuated via a solenoid 9, which via a pressure sensitive switch 10 and power source 11 can be operated.
  • the pressure-sensitive switch 10 has a control line 12 which opens into the pressure medium supply line 13 to the rotating mechanism 7 immediately before it.
  • the actuator 8 can be actuated when a certain pressure in the feed line to the rotating mechanism is exceeded, which leads to a change in the rotational speed or to an interruption in the supply of the pressure medium to the rotating mechanism. If the pressure then drops, for example because the drill steel has been partially moved out of the borehole, the supply of the pressure medium or the change in the rotational speed of the rotating mechanism 7 can take place again.
  • the feed motor 20 is provided, the direction of rotation of which via the actuator 21 can be swept, or the hydraulic circuit to the pump 6 can be short-circuited, whereby no pressure medium reaches the feed motor 20.
  • the actuator 21 has a piston-cylinder unit 22 which has two pressure chambers. Control lines 23, 24, which have their own control medium, etc., open into these pressure chambers. Compressed air included. These control lines lead to an actuator 25 which is connected to a compressed air source 26.
  • the actuator 25 in turn has a spring 27 and a piston-cylinder unit 28, which is connected via a control line 29 to the pressure medium supply line to the rotary motor 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP19840890204 1983-11-08 1984-10-31 Regulation d'une foreuse à percussion Expired EP0145701B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0393183A AT381363B (de) 1983-11-08 1983-11-08 Vorrichtung zum schlagenden bohren
AT3931/83 1983-11-08

Publications (2)

Publication Number Publication Date
EP0145701A1 true EP0145701A1 (fr) 1985-06-19
EP0145701B1 EP0145701B1 (fr) 1988-04-20

Family

ID=3557369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890204 Expired EP0145701B1 (fr) 1983-11-08 1984-10-31 Regulation d'une foreuse à percussion

Country Status (5)

Country Link
EP (1) EP0145701B1 (fr)
JP (1) JPS60112987A (fr)
AT (1) AT381363B (fr)
DE (1) DE3470582D1 (fr)
FI (1) FI81886C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU584794B2 (en) * 1986-04-24 1989-06-01 Steel Engineering Company Limited; The Hydraulically powered rotary percussive machines
EP0427663A1 (fr) * 1989-11-08 1991-05-15 GebràœDer Sulzer Aktiengesellschaft Dispositif hydraulique de forage et procédé d'utilisation
EP0564504B1 (fr) * 1991-01-03 1996-08-28 Tamrock Oy Procede de forage d'un trou dans la roche
EP0906811A1 (fr) * 1997-10-03 1999-04-07 SIG Schweizerische Industrie-Gesellschaft Marteau de forage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20030115A (fi) 2003-01-24 2004-07-25 Sandvik Tamrock Oy Hydraulijärjestelmä louhintalaitetta varten ja menetelmä kallioporakoneen tehon säätämiseksi
FI121027B (fi) 2004-09-24 2010-06-15 Sandvik Mining & Constr Oy Menetelmä iskevän kallionporauksen ohjaamiseksi, ohjelmistotuote sekä kallionporauslaite

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2232668A1 (fr) * 1973-06-08 1975-01-03 Dresser Ind
FR2264960A1 (fr) * 1974-03-18 1975-10-17 Tapella Ab Oy
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
FR2345578A1 (fr) * 1976-03-25 1977-10-21 Joy Mfg Co Perfectionnements relatifs a des engins de forage
GB2020597A (en) * 1978-05-11 1979-11-21 Tampella Oy Ab Control system for a rock drill
US4356871A (en) * 1979-10-06 1982-11-02 Toyo Kogyo Co., Ltd. Hydraulic control system for a rock drill

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2232668A1 (fr) * 1973-06-08 1975-01-03 Dresser Ind
FR2264960A1 (fr) * 1974-03-18 1975-10-17 Tapella Ab Oy
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
FR2345578A1 (fr) * 1976-03-25 1977-10-21 Joy Mfg Co Perfectionnements relatifs a des engins de forage
GB2020597A (en) * 1978-05-11 1979-11-21 Tampella Oy Ab Control system for a rock drill
US4356871A (en) * 1979-10-06 1982-11-02 Toyo Kogyo Co., Ltd. Hydraulic control system for a rock drill

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU584794B2 (en) * 1986-04-24 1989-06-01 Steel Engineering Company Limited; The Hydraulically powered rotary percussive machines
EP0427663A1 (fr) * 1989-11-08 1991-05-15 GebràœDer Sulzer Aktiengesellschaft Dispositif hydraulique de forage et procédé d'utilisation
US5107933A (en) * 1989-11-08 1992-04-28 Sulzer Brothers Limited Hydraulic drilling outfit
EP0564504B1 (fr) * 1991-01-03 1996-08-28 Tamrock Oy Procede de forage d'un trou dans la roche
EP0906811A1 (fr) * 1997-10-03 1999-04-07 SIG Schweizerische Industrie-Gesellschaft Marteau de forage
US6119793A (en) * 1997-10-03 2000-09-19 Sig Rocktools Ag Rock drill

Also Published As

Publication number Publication date
EP0145701B1 (fr) 1988-04-20
FI81886C (fi) 1990-12-10
FI81886B (fi) 1990-08-31
DE3470582D1 (en) 1988-05-26
FI844200A0 (fi) 1984-10-25
JPS60112987A (ja) 1985-06-19
AT381363B (de) 1986-10-10
ATA393183A (de) 1986-02-15
FI844200L (fi) 1985-05-09

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