EP0126268A1 - Dispositif pour produire de l'énergie mécanique et hydraulique agissant pulsatoirement pour le broyage de roches - Google Patents

Dispositif pour produire de l'énergie mécanique et hydraulique agissant pulsatoirement pour le broyage de roches Download PDF

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Publication number
EP0126268A1
EP0126268A1 EP84104035A EP84104035A EP0126268A1 EP 0126268 A1 EP0126268 A1 EP 0126268A1 EP 84104035 A EP84104035 A EP 84104035A EP 84104035 A EP84104035 A EP 84104035A EP 0126268 A1 EP0126268 A1 EP 0126268A1
Authority
EP
European Patent Office
Prior art keywords
pressure
piston
tool
pressure piston
pressure chamber
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.)
Withdrawn
Application number
EP84104035A
Other languages
German (de)
English (en)
Inventor
Erwin Hejj
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.)
Fried Krupp AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of EP0126268A1 publication Critical patent/EP0126268A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • the invention is based on the object of specifying a device for generating pulsating mechanical and hydraulic energy in which the proportion of the hydraulic energy acting in pulsed fashion is increased.
  • the invention uses the idea that the decisive effect of the liquid jet is determined not so much by its duration but by the actual pulse-like occurrence. Instead of a single water jet per working stroke of the percussion piston, the device according to the invention can generate several impulsive water jets per working stroke of the percussion piston.
  • the design of the pressure piston according to claim 2 enables the pressure medium inlet to be laid in a position of the tool which is further away from the rock to be crushed.
  • the device for generating pulsating mechanical and hydraulic energy has a hydraulic hammer 1, of which only the lower part is shown in the drawing, and a tool 2.
  • the housing 11 of the hydraulic hammer 1 has a cylindrical bore 12, in which the lower end of an impact piston 13 is guided. At its end, the hammer drill 1 has a further cylindrical bore 14 for receiving the Tool 2 on. There is a hollow cylindrical extension or recess 15 between the two bores 11 and 13.
  • the tool 2 essentially consists of a base body 21 and a pressure piston 22. Both the base body 21 and the pressure piston 22 can consist of several individual parts for constructional or technical reasons. In the description of the invention, however, for the sake of simplicity, the base body 21 and the pressure piston 22 are assumed to consist of one piece.
  • the base body 21 has at its insertion end 23, the diameter of which is adapted to that of the bore 14, a longitudinal groove 24 into which a pin arranged in the housing 11 engages.
  • the largest possible longitudinal movement of the tool 2 relative to the housing 11 results from the length of the groove 24 and the diameter of the pin 25.
  • the tool 2 has an opening that is continuous along its entire length, which is formed in the region of the insertion end 23 as a hollow cylindrical recess 27 - hereinafter also referred to as pressure cylinder 27 - and which has a nozzle-like opening 29 in the vicinity of the tool tip 28.
  • the passage from the pressure medium cylinder 27 to the nozzle 29 is designed as a hollow cylindrical bore 30, the diameter of which lies between that of the pressure medium cylinder 27 and that of the nozzle 29.
  • FIG. 2 shows an exemplary embodiment in which a conical passage 30 'is arranged between the pressure cylinder 27 and the nozzle 29, the diameter of which continuously decreases toward the nozzle opening 29.
  • the tool 2 has an impact surface 31 with a flange 32 at its insertion end 23.
  • a hollow cylindrical extension 33 with an end face or contact surface 34 is arranged between the flange 32 and the hollow cylindrical pressure cylinder 27.
  • the tool 2 also has a pressure medium inlet 36 entering the pressure cylinder 27 and at least one pressure medium return line 37 connected to the pressure cylinder 27.
  • the pressure piston 22 has an impact end 38 facing the percussion piston 13 with a flange 39. Between the end face 34 and the flange 36, a compression spring 40 is arranged which presses the pressure piston 22 into its right rest or starting position shown in FIG. 1.
  • the pressure piston 22 has a first piston part 41 and a second piston part 42, between which a circumferential groove 43 is arranged in the region of the pressure medium inlet 36.
  • the pressure piston 22 has a central bore 45 which is connected to the circumferential groove 43 by at least one transverse bore 46.
  • a suction or check valve 51 is arranged within the line connection to the pressure chamber 50, which consists of the actual pressure medium inlet 36 and possibly the circumferential groove 43, the cross-connection 46 and the central bore 45.
  • the feed line 36 containing the check valve 51 leads directly into the wall of the pressure cylinder 27 delimiting the pressure chamber 50, specifically in the vicinity of the bore 30 leading to the nozzle 29.
  • the pressure medium inlet 36 lies at the level of the circumferential groove 43, specifically in the area facing the piston surface 44.
  • the check valve 51 is installed in the central bore 45 of the pressure piston 22.
  • the pressure medium return line 37 and the pressure medium inlet 36 can be connected to one another by a common cavity 52.
  • the pressure cylinder 27 is equipped with two pressure medium return lines 37a, 37b.
  • the pressure piston 22 has transverse connections 47a to 47d in four axially one behind the other, each of which opens into a circumferential or annular groove 54a to 54d.
  • the pressure medium return lines 37a, 37b have a pitch t 'which is equal to the double pitch t of the cross connections 47a to 47d.
  • the bore 30 can contain a check valve 55, which blocks in the direction of the pressure chamber 50 and opens in the direction of the opening 29 at the tool tip 28.
  • the hydraulic cylinder periodically gives its percussion piston 13 kinetic energy.
  • the percussion piston 13 flies in the direction of the tool 2 and first hits the impact end 38 of the pressure piston 22 and moves it counter to the force of the spring 40 relative to the base body 21 to the left.
  • the pressure piston 22 generates a high pressure in the pressure medium in the pressure chamber 50, so that it suddenly escapes through the nozzle opening 29 and generates a liquid pulse at the point of use of the tool tip 28.
  • the annular groove 54a of the pressure piston 22 coincides with the opening of the pressure medium return line 37a in the pressure cylinder 27, so that for a short time - groove width b plus width c of the opening of the pressure medium return line 37a in the pressure cylinder 27 divided by the speed of the Piston 22 - pressure medium can flow out of the pressure chamber 50 through the cross connection 47a into the return line 37a. As a result, the pressure of the print medium is largely reduced for this time.
  • the number of liquid impulses is identical to the number of cross connections 47 (47a, ...), which pass over the return line 37 or 37a during the relative movement between the pressure piston 22 and the base body 21 of the tool 2.
  • the passage cross section for the discharge of the pressure medium can be increased and the pressure reduction can thus be accelerated.
  • the division t ' is expediently equal to the division t, so that an effective pressure reduction takes place during the first pressure interruption, in which there is still a high kinetic energy of the percussion piston 13.
  • the percussion piston 13 strikes the impact surface 31 of the base body 21 and thus also gives the tool tip 28 the remaining kinetic energy.
  • the pressure chamber can be filled again with pressure medium and the pressure piston 22 can be pressed back into its right starting position by the compression spring 40.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP84104035A 1983-04-27 1984-04-11 Dispositif pour produire de l'énergie mécanique et hydraulique agissant pulsatoirement pour le broyage de roches Withdrawn EP0126268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833315124 DE3315124A1 (de) 1983-04-27 1983-04-27 Vorrichtung zur erzeugung pulsierend einwirkender mechanischer und hydraulischer energie zum zerkleinern von gestein
DE3315124 1983-04-27

Publications (1)

Publication Number Publication Date
EP0126268A1 true EP0126268A1 (fr) 1984-11-28

Family

ID=6197412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104035A Withdrawn EP0126268A1 (fr) 1983-04-27 1984-04-11 Dispositif pour produire de l'énergie mécanique et hydraulique agissant pulsatoirement pour le broyage de roches

Country Status (2)

Country Link
EP (1) EP0126268A1 (fr)
DE (1) DE3315124A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398405A1 (fr) * 1989-05-16 1990-11-22 Schneider, Francine Méthode à deux jets
EP0340280A4 (en) * 1987-11-02 1992-10-21 Underground Technologies, Inc. Self-propelled subsoil penetrating tool system
EP0884446A3 (fr) * 1997-06-13 2000-10-04 Tracto-Technik Paul Schmidt Spezialmaschinen Appareil de forage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19721383C2 (de) * 1997-05-22 2001-08-30 Brueckner Grundbau Gmbh Bohrwerkzeug
DE19845159A1 (de) * 1998-10-01 2000-04-06 Hossein Hosseini Tudeshki Verfahren und Anlage für die Verdichtung oder Auflockerung von bindigem und nichtbindigem Gut (z. B. Lockergestein) durch hydraulischen Impuls
CN109779531B (zh) * 2019-03-07 2023-09-19 长江大学 一种射流振荡双向冲击器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712543A (en) * 1971-04-19 1973-01-23 Exotech Apparatus for generating pulsed jets of liquid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712543A (en) * 1971-04-19 1973-01-23 Exotech Apparatus for generating pulsed jets of liquid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340280A4 (en) * 1987-11-02 1992-10-21 Underground Technologies, Inc. Self-propelled subsoil penetrating tool system
EP0398405A1 (fr) * 1989-05-16 1990-11-22 Schneider, Francine Méthode à deux jets
WO1990014200A1 (fr) * 1989-05-16 1990-11-29 Schneider, Francine Procede a double jet
TR25327A (tr) * 1989-05-16 1993-01-01 Schneider Francine Madde cikarma calismasi icin yöntem ve tertibat
EP0884446A3 (fr) * 1997-06-13 2000-10-04 Tracto-Technik Paul Schmidt Spezialmaschinen Appareil de forage

Also Published As

Publication number Publication date
DE3315124A1 (de) 1984-10-31

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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17P Request for examination filed

Effective date: 19841217

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19860320

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HEJJ, ERWIN