EP0306414B1 - Dispositif purgeur, notamment pour le toit rocheux dans les mines, chantiers souterrains ou analogues - Google Patents

Dispositif purgeur, notamment pour le toit rocheux dans les mines, chantiers souterrains ou analogues Download PDF

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Publication number
EP0306414B1
EP0306414B1 EP88420264A EP88420264A EP0306414B1 EP 0306414 B1 EP0306414 B1 EP 0306414B1 EP 88420264 A EP88420264 A EP 88420264A EP 88420264 A EP88420264 A EP 88420264A EP 0306414 B1 EP0306414 B1 EP 0306414B1
Authority
EP
European Patent Office
Prior art keywords
pneumatic hammer
impact
rock
ellipsoid
head
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
Application number
EP88420264A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306414A1 (fr
Inventor
Bernard Pradelle
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.)
Cessione Generale Des Matieres Nucleaire Cie
Original Assignee
SOREIS DITE Ste
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 SOREIS DITE Ste filed Critical SOREIS DITE Ste
Priority to AT88420264T priority Critical patent/ATE69293T1/de
Publication of EP0306414A1 publication Critical patent/EP0306414A1/fr
Application granted granted Critical
Publication of EP0306414B1 publication Critical patent/EP0306414B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/22—Hand tools or hand-held power-operated tools specially adapted for dislodging minerals

Definitions

  • the present invention relates to a drain device intended for use on a site, in particular in an underground mine or in an underground site.
  • the object of the present invention is to avoid these drawbacks by providing a drain device which makes it possible to quickly and effectively purge a rock wall, in particular after firing an explosive.
  • the striking head has substantially the shape of an ellipsoid flattened.
  • the cells have a substantially frustoconical shape, and they are hollowed out radially around the axis of revolution of the ellipsoid, which geometric axis corresponds with the longitudinal axis of the tool and the hammer pneumatic.
  • each frustoconical cell is arranged radially, substantially in the equatorial plane of the flattened ellipsoid.
  • the shape of the striking head makes it possible both to optimize its contact surface with the rock, and on the other hand, to best concentrate the energy of percussion, by reduction of mechanical inertia in areas that do not support the maximum of the impact stresses.
  • the pole 3 can have a length of the order of two to three meters. It carries a supply of compressed air from a flexible pipe 5.
  • the lower part of the pole 3 constitutes a handle 6, which the user 7 grasps with one of his hands 8.
  • a trigger 9 remotely controlling the operation of the pneumatic hammer 2.
  • the striking tool consists of the part 4, the rod 10 of which is surmounted by an enlarged head 11.
  • the latter is made of metal, in one piece with the rod 10.
  • the head 11 has the general shape of a flattened ellipsoid of revolution around the geometric axis 12 common to the head 11 and to the rod 10.
  • This head 11 is lightened by the presence of cells 13.
  • Each of these has a substantially frustoconical shape converging towards the center 14.
  • the longitudinal axis 15 of each of the cells 13 is substantially arranged in the equatorial plane 16 of the ellipsoid of revolution.
  • the rod 10 is preferably equipped, at mid-length with a flange 17, of a type known per se, intended to cooperate with the shifting spring 18 which protrudes, as usual, at the top of the hammer pneumatic 2.
  • the invention allows the user to optimize the efficiency of the trap, by means of a very simple operation which corresponds to a natural gesture. It suffices for him, in effect, to push the pole 3 more or less strongly against the block 21, to vary both the frequency and the amplitude of the shocks exerted by the head 4. These shock waves generated by the pneumatic hammer make up , in the fault, a resultant "wave mass" which returns in resonance with the generator, which causes the separation of the blocks. It will be noted that these advantages can be obtained on rocks of very diverse natures, in particular, in particular, because of the special honeycomb structure of the striking head 4.
  • Shock wave purging consists in generating an energy of variable amplitude and frequency, so as to compose, in fault 23, a resonant wave mass, which is amplified by the accumulation of energy.
  • the increase in the amplitude of a vibration (or shock waves) in the fault is therefore the result of a circuit in resonance with the period or the frequency imposed by the generator.
  • the shock wave 22 emitted by the hammer 2 is composed with the wave 24 reflected in return and of the same frequency.
  • the shock wave energy generated in the fault 23 resonates with the hammer 2, until the block 21 detaches.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Earth Drilling (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Tents Or Canopies (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Tea And Coffee (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
EP88420264A 1987-08-06 1988-07-26 Dispositif purgeur, notamment pour le toit rocheux dans les mines, chantiers souterrains ou analogues Expired - Lifetime EP0306414B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88420264T ATE69293T1 (de) 1987-08-06 1988-07-26 Beraeumvorrichtung, insbesondere fuer gesteinsfirsten im bergbau, auf unterirdischen baustellen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711384 1987-08-06
FR8711384A FR2619157B1 (fr) 1987-08-06 1987-08-06 Dispositif purgeur, notamment pour le toit rocheux dans les mines, chantiers souterrains ou analogues

Publications (2)

Publication Number Publication Date
EP0306414A1 EP0306414A1 (fr) 1989-03-08
EP0306414B1 true EP0306414B1 (fr) 1991-11-06

Family

ID=9354075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420264A Expired - Lifetime EP0306414B1 (fr) 1987-08-06 1988-07-26 Dispositif purgeur, notamment pour le toit rocheux dans les mines, chantiers souterrains ou analogues

Country Status (9)

Country Link
US (1) US4871214A (fi)
EP (1) EP0306414B1 (fi)
AT (1) ATE69293T1 (fi)
AU (1) AU2039688A (fi)
DE (1) DE3866071D1 (fi)
FI (1) FI883564A (fi)
FR (1) FR2619157B1 (fi)
NO (1) NO883477L (fi)
PT (1) PT88213B (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2077485B1 (es) * 1991-07-11 1996-08-01 Ingemas S A Mecanismo de empuje suplementario para martillos de percusion.
US5409300A (en) * 1994-02-23 1995-04-25 Bourgoin; Claude Mechanized scaling bar
US5407252A (en) * 1994-09-01 1995-04-18 Carey Salt Company, Inc. Method and apparatus for scaling mine roofs and ribs
ZA200403542B (en) * 2001-11-22 2008-01-30 Burger Nicolaas Daniel Lombard Rock prying apparatus for hanging roof in mines
CN104677215A (zh) * 2015-02-10 2015-06-03 东北大学 一种堵塞炮孔的疏通处理装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528316A (fr) * 1919-10-09 1921-11-10 Wilhelm Fachinger Outil pour l'extraction du charbon
US1884653A (en) * 1930-05-27 1932-10-25 Sullivan Machinery Co Demolishing pick
US2004083A (en) * 1930-09-15 1935-06-04 Cleveland Pneumatic Tool Co Tool attachment
US1926042A (en) * 1931-10-12 1933-09-12 Sullivan Machinery Co Power operated tool
US3036482A (en) * 1960-09-02 1962-05-29 Kenworthy Kenneth Axial-impact type hand tool
CA926614A (en) * 1971-03-01 1973-05-22 Richard Austin E. Method and apparatus for shattering concrete encasements for conduits
US3857448A (en) * 1971-11-15 1974-12-31 Proline Ind Pty Ltd Hydraulically operated tamper
FR2152546B1 (fi) * 1972-07-31 1974-11-08 Poclain Sa

Also Published As

Publication number Publication date
FR2619157B1 (fr) 1991-11-22
US4871214A (en) 1989-10-03
EP0306414A1 (fr) 1989-03-08
PT88213A (pt) 1989-06-30
NO883477L (no) 1989-02-07
PT88213B (pt) 1993-09-30
DE3866071D1 (de) 1991-12-12
FI883564A (fi) 1989-02-07
FR2619157A1 (fr) 1989-02-10
NO883477D0 (no) 1988-08-04
FI883564A0 (fi) 1988-07-29
AU2039688A (en) 1989-02-09
ATE69293T1 (de) 1991-11-15

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