GB1343857A - Pressure-medium operated percussion or impact apparatus - Google Patents
Pressure-medium operated percussion or impact apparatusInfo
- Publication number
- GB1343857A GB1343857A GB1343857DA GB1343857A GB 1343857 A GB1343857 A GB 1343857A GB 1343857D A GB1343857D A GB 1343857DA GB 1343857 A GB1343857 A GB 1343857A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- chambers
- rotated
- pressure
- grooves
- 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
Links
- 238000009527 percussion Methods 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 2
Classifications
-
- 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
- B25D9/14—Control devices for the reciprocating piston
- B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
1343857 Power hammers MOELVEN BRUG A S 17 May 1972 23203/72 Heading B3H [Also in Divisions B4-B5] A percussive tool, e.g. a hammer, includes a striker piston having an axial groove in its cylindrical surface and fluid pressure chambers in the cylinder at opposite ends of the piston, the groove extending partway along the piston to open into one of the chambers. The piston is rotated to bring the groove alternately into communication with pressure and exhaust conduits. Grooves may extend from opposite ends of the piston to communicate with both chambers. In one arrangement, Fig. 4, applied to a drill, grooves 11, 12 communicating with upper and lower chambers 9, 10 alternate round the piston which, as it reciprocates is carried to rotate in one direction only. This is achieved by splined extensions 28, 29 sliding in matching nuts 30, 31 permitted to rotate in opposite directions only by pawl and ratchet means, Fig. 5 (not shown). Rotation is imparted to the drill holder via a sliding connection 34, 35. In other arrangements, the piston and drill holder are integral and rotated by a motor (1) on the upper end of the piston-rod through a splined connection, Fig. 1 (not shown). The drill holder may be separate and rotated by a separate motor 22, Fig. 3 (not shown). In another embodiment, Fig. 6, the piston ends are of different areas and the grooves communicate only with the chamber 37 at the larger end. The small end chamber 38 is in constant connection with pressure fluid but its influence will only raise the piston when the upper chamber 37 is opened to exhaust.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2320372 | 1972-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1343857A true GB1343857A (en) | 1974-01-16 |
Family
ID=10191829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1343857D Expired GB1343857A (en) | 1972-05-17 | 1972-05-17 | Pressure-medium operated percussion or impact apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1343857A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964691A1 (en) * | 2010-09-13 | 2012-03-16 | Montabert Roger | HYDRAULIC ROTOPERCUTANT APPARATUS FOR PERFORATING MINE HOLES |
-
1972
- 1972-05-17 GB GB1343857D patent/GB1343857A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2964691A1 (en) * | 2010-09-13 | 2012-03-16 | Montabert Roger | HYDRAULIC ROTOPERCUTANT APPARATUS FOR PERFORATING MINE HOLES |
CN102400643A (en) * | 2010-09-13 | 2012-04-04 | 蒙塔博特公司 | Hydraulic Rotary Punching Device For Perforation |
WO2012089949A1 (en) * | 2010-09-13 | 2012-07-05 | Montabert | Hydraulic rotary percussion apparatus for boring mine holes |
US9194182B2 (en) | 2010-09-13 | 2015-11-24 | Montabert | Hydraulic rotary percussive device intended to drill boreholes |
CN102400643B (en) * | 2010-09-13 | 2015-11-25 | 蒙塔博特公司 | For the hydraulic rotating impact device of holing |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |