FR2364325A1 - Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78) - Google Patents

Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78)

Info

Publication number
FR2364325A1
FR2364325A1 FR7627111A FR7627111A FR2364325A1 FR 2364325 A1 FR2364325 A1 FR 2364325A1 FR 7627111 A FR7627111 A FR 7627111A FR 7627111 A FR7627111 A FR 7627111A FR 2364325 A1 FR2364325 A1 FR 2364325A1
Authority
FR
France
Prior art keywords
rock
cracks
cutting edge
drill
hydraulically operated
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Withdrawn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
FR7627111A
Other languages
French (fr)
Inventor
Per Kollandsrud
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.)
Moelven Brug AS
Original Assignee
Moelven Brug AS
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 Moelven Brug AS filed Critical Moelven Brug AS
Priority to FR7627111A priority Critical patent/FR2364325A1/en
Publication of FR2364325A1 publication Critical patent/FR2364325A1/en
Withdrawn legal-status Critical Current

Links

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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The rock drill is hydraulically operated and has its cutting edge (12) fixed directly (11) onto the operating spindle (9) passing through the drill body (5). The operating fluid enters at the top, through a rotary motor (2). The outlet fluid then passes (3) into a chamber and up axial slots (7) to drive the spindle down. This hydraulic fluid is exhaust (8) from the machine whilst a further portion is conducted (4) to the underside (6) of the operating piston. The difference in pressures raises the drill and the combined effect of lifting the tool between blows and part rotating it prevents jamming in cracks in the rock.
FR7627111A 1976-09-09 1976-09-09 Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78) Withdrawn FR2364325A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7627111A FR2364325A1 (en) 1976-09-09 1976-09-09 Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7627111A FR2364325A1 (en) 1976-09-09 1976-09-09 Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78)

Publications (1)

Publication Number Publication Date
FR2364325A1 true FR2364325A1 (en) 1978-04-07

Family

ID=9177524

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627111A Withdrawn FR2364325A1 (en) 1976-09-09 1976-09-09 Hydraulically operated rock drill - has cutting edge raised after each axial travel and part rotated to prevent jamming in cracks in rock (SW 13.3.78)

Country Status (1)

Country Link
FR (1) FR2364325A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429320A1 (en) * 1978-06-20 1980-01-18 Secoma ROTO-PERCUTANT HYDRAULIC DRILLING APPARATUS
WO2007147979A1 (en) * 2006-06-22 2007-12-27 Montabert Hydraulic rotary percussive device of the drill type
CN111941226A (en) * 2020-07-08 2020-11-17 无锡天夏超声设备有限公司 Ultrasonic shot blasting structure
US10883312B2 (en) 2015-09-30 2021-01-05 Jaron Lyell Mcmillan Percussion device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429320A1 (en) * 1978-06-20 1980-01-18 Secoma ROTO-PERCUTANT HYDRAULIC DRILLING APPARATUS
WO2007147979A1 (en) * 2006-06-22 2007-12-27 Montabert Hydraulic rotary percussive device of the drill type
FR2902821A1 (en) * 2006-06-22 2007-12-28 Montabert Soc Par Actions Simp HYDRAULIC ROTOPERCUTTING DEVICE OF THE PUNCHING TYPE
US8413741B2 (en) 2006-06-22 2013-04-09 Montabert Hydraulic rotary percussive device of the drill type
US10883312B2 (en) 2015-09-30 2021-01-05 Jaron Lyell Mcmillan Percussion device
CN111941226A (en) * 2020-07-08 2020-11-17 无锡天夏超声设备有限公司 Ultrasonic shot blasting structure

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Legal Events

Date Code Title Description
ST Notification of lapse