EP0145701B1 - Regulation d'une foreuse à percussion - Google Patents

Regulation d'une foreuse à percussion Download PDF

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Publication number
EP0145701B1
EP0145701B1 EP19840890204 EP84890204A EP0145701B1 EP 0145701 B1 EP0145701 B1 EP 0145701B1 EP 19840890204 EP19840890204 EP 19840890204 EP 84890204 A EP84890204 A EP 84890204A EP 0145701 B1 EP0145701 B1 EP 0145701B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure medium
drilling
feed motor
feed
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
Application number
EP19840890204
Other languages
German (de)
English (en)
Other versions
EP0145701A1 (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 impact drilling in rock or the like with a rotary mechanism, impact mechanism and feed motor which can be operated with pressure medium, in particular hydraulic fluid, and which are connected via pressure medium lines, which actuators, e.g. Valves or the like, are connected to one or more pressure sources, a control line being provided from the pressure medium supply line of the rotating mechanism to an actuator in the pressure medium supply line of the impact mechanism.
  • actuators e.g. Valves or the like
  • 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 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 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 rotating mechanism.
  • a control line branches off the pressure medium line from the slewing gear, via which a valve in the percussion mechanism circuit is actuated, as a result of which a pressure reduction in the percussion mechanism circuit can be achieved.
  • a control line branches off from the percussion mechanism circuit to a valve, which reverses the direction of movement of the feed motor.
  • the inertia is due to the fact that the pressure in the rotating mechanism circuit causes a lowering of the pressure in the hammer mechanism circuit, where the pressure in the hammer mechanism circuit then reverses the direction of rotation of the feed motor.
  • the direction of movement of the feed motor is only reversed again when a corresponding pressure increase in the percussion mechanism circuit has occurred.
  • the drill performs 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 or inclusions of particularly soft rock, a drop in pressure in the striking mechanism may occur, which in turn causes the drilling unit to be withdrawn, but this is not justified by drilling technology.
  • a device for impact drilling in rock is known.
  • the feed, rotation and impact movements of the drilling shaft are generated by a hydraulic system.
  • the servomotors are controlled with the aid of actuators which are connected to the pressure sources via pressure medium lines.
  • the hammer mechanism is controlled by the pressure in the pressure medium line to the feed motor.
  • the invention has set itself the task of creating 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 great drilling progress, while at the same time unnecessary delays during switching and also blows the Device should be avoided.
  • the goal is achieved in that the pressure medium feed lines to the slewing gear, Percussion mechanism and feed motor are separated from each other or connected in parallel and control lines from the pressure medium supply line of the slewing gear to the actuators controllable by overpressure in the pressure medium supply line to the slewing gear are provided in the pressure medium feed lines to the hammer mechanism, feed motor and possibly slewing gear and that at least one control line with an actuator in another Control line is connected to compressed air and the further control line is connected to the actuator of the pressure medium supply line of the feed motor.
  • Such a device ensures that when the pressure rises, e.g. Via a threshold value in the slewing gear - as occurs with greater resistance in the rock - the pressure medium supply to the striking mechanism can either be throttled or prevented and at the same time the feed motor can be controlled directly by changing the pressure in the circuit of the slewing gear by reversing the direction of rotation. It is thus ensured that the impact energy can be reduced or reduced to zero with increased pressure in the feed line of the slewing gear, 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.
  • the actuators can be operated in a particularly simple and effective manner, the outlay on equipment being kept particularly low.
  • 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, e.g. a valve spool can be operated via a solenoid 9, which can be operated via a pressure-sensitive switch 10 and current source 11.
  • 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 pressure medium circuit 2 has an impact motor 14, in which an actuator 15 is provided which is held in position by a spring 16.
  • the actuator also has a piston-cylinder unit 17, the pressure chamber of which is connected via a control line 18 to the pressure medium supply line 13 to the rotating mechanism 7. If the pressure in the pressure medium supply line to the slewing gear 7 increases, e.g. when a certain threshold value is exceeded, the actuator 15 is actuated via the cylinder piston unit 17, in which the working medium of the hydraulic circuit for the rotating mechanism 7 flows, whereby the actuator 15 is moved from the open position shown in the drawing to a delivery. If the pressure in the slewing gear drops, the actuator 16 is pushed back into the open position by the spring 16.
  • a separate actuator 19 can also be provided in the pressure medium circuit 2, e.g. serves to relieve pressure in the pressure medium circuit.
  • the feed motor 20 is provided in the pressure medium circuit 3, the direction of rotation of which can be reversed via the actuator 21, or the hydraulic circuit to the pump 6 can be short-circuited, as a result of which no pressure medium reaches the feed motor 20.
  • the actuator 21 has a piston-cylinder unit 22 which has two pressure chambers.
  • 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.
  • the actuator 25 is actuated so that the flow direction of the compressed air in the lines 23, 24 is reversed, which causes actuation of the actuator 21 so that the direction of rotation of the feed motor is reversed. If there is pressure relief, the actuator 25 is actuated by the spring 27 so that the original feed direction can be restored.

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)

Claims (2)

1. Dispositif pour réaliser le forage à percussion dans des rochers ou analogues, comportant un outil rotatif (7) pouvant être alimenté par un fluide sous pression, notamment un liquide sous pression, un outil de percussion (14) et un moteur d'avance (20), qui sont reliés à une ou plusieurs sources de pression (4, 5, 6) par l'intermédiaire de canalisations (1, 2, 3) véhiculant un fluide sous pression et qui comportent des organes de réglage (8, 15, 21), par exemple des soupapes ou analogues, une canalisation de commande (18) reliant la canalisation (1) d'amenée du fluide sous pression de l'outil rotatif (7) à un organe de réglage (15) situé dans la canalisation (2) d'amenée du fluide sous pression de l'outil de percussion (4), caractérisé en ce que les canalisations (1, 2, 3) d'amenée du fluide sous pression, qui aboutissent à l'outil rotatif (7), l'outil de percussion (14) et au moteur d'avance (20), sont branchées séparément les unes des autres ou en parallèle et qu'il est prévu des canalisations de commande (12, 18, 29) reliant la canalisation (13) d'amenée du fluide sous pression de l'outil rotatif (7) aux organes de réglage (8, 15, 21 qui peuvent être commandés par une surpression régnant dans la canalisation (13) d'amenée du fluide sous pression aboutissant à l'outil rotatif (7) et qui sont disposés dans la canalisation d'amenée du fluide sous pression aboutissant à l'outil de percussion (14), au moteur d'avance (20) et éventuellement à l'outil rotatif (7), et qu'au moins une canalisation de commande (29) est reliée à un organe de réglage (28) situé dans une autre canalisation de commande (23, 24) dans laquelle circule de l'air comprimé, et l'autre canalisation de commande (23, 24) est reliée à l'organe de réglage (21) de la canalisation d'amenée du fluide sous pression du moteur d'avance (20).
2. Dispositif selon la revendication 1, caractérisé en ce que toutes les canalisations de commande aboutissant aux organes de réglage peuvent être chargées de façon identique, notamment par de l'air comprimé.
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
AT3931/83 1983-11-08
AT0393183A AT381363B (de) 1983-11-08 1983-11-08 Vorrichtung zum schlagenden bohren

Publications (2)

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

Families Citing this family (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
FI904366A0 (fi) * 1989-11-08 1990-09-04 Sulzer Ag Hydraulisk borranordning och foerfarande foer dess anvaendning.
FI90276C (fi) * 1991-01-03 1994-01-10 Tamrock Oy Menetelmä reiän poraamiseksi kallioon
EP0906811B1 (fr) * 1997-10-03 2002-05-15 SIG Produktionstechnik AG Marteau de forage
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823784A (en) * 1973-06-08 1974-07-16 Dresser Ind Method and apparatus for controlling hydraulic drifters
FI55892C (fi) * 1974-03-18 1979-10-10 Tampella Oy Ab Hydraulisk borrmaskin i synnerhet bergborrningsmaskin
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
US4074771A (en) * 1976-03-25 1978-02-21 Joy Manufacturing Company Rock drill
FI56723C (fi) * 1978-05-11 1980-03-10 Tampella Oy Ab Styrningssystem foer borrmaskin
JPS5655684A (en) * 1979-10-06 1981-05-16 Toyo Kogyo Co Feed controller circuit for hydraulic rock driller

Also Published As

Publication number Publication date
FI81886B (fi) 1990-08-31
FI81886C (fi) 1990-12-10
JPS60112987A (ja) 1985-06-19
AT381363B (de) 1986-10-10
ATA393183A (de) 1986-02-15
DE3470582D1 (en) 1988-05-26
FI844200L (fi) 1985-05-09
FI844200A0 (fi) 1984-10-25
EP0145701A1 (fr) 1985-06-19

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