SE7504591L - PITCH DRIVE DRIVED BY A PRESSURE SWEET. - Google Patents
PITCH DRIVE DRIVED BY A PRESSURE SWEET.Info
- Publication number
- SE7504591L SE7504591L SE7504591A SE7504591A SE7504591L SE 7504591 L SE7504591 L SE 7504591L SE 7504591 A SE7504591 A SE 7504591A SE 7504591 A SE7504591 A SE 7504591A SE 7504591 L SE7504591 L SE 7504591L
- Authority
- SE
- Sweden
- Prior art keywords
- head
- piston
- front chamber
- control
- pressure
- Prior art date
Links
- 235000009508 confectionery Nutrition 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 3
- 238000009527 percussion Methods 0.000 abstract 3
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
- B25D9/06—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L21/00—Use of working pistons or pistons-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
- F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
- F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
- F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/007—Reciprocating-piston liquid engines with single cylinder, double-acting piston
- F03C1/0073—Reciprocating-piston liquid engines with single cylinder, double-acting piston one side of the double-acting piston being always under the influence of the liquid under pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Percussive Tools And Related Accessories (AREA)
- Lock And Its Accessories (AREA)
Abstract
The intention is to be able to reduce the wear and permit easier starting. The percussion apparatus has a housing (1) to which a tool can be fastened. A piston (27) with a head (4) is axially movable in a reciprocating manner in a cylinder space in the housing. A sleeve-shaped, axially movable control valve (7) concentrically encloses the piston in such a way that the cylindrical inner face forms a cylindrical wall of the cylinder space surrounding the head. A front chamber (8) is formed in the cylinder space on the percussion side of the head. The front chamber (8) is separated from the control-valve space (6) of the control valve by a housing shoulder (28) surrounding the head. There is a passage (13) in the cylindrical surface of the head in order to produce a pressure-fluid connection between the front chamber and the control-valve space at the level of the end of the percussion movement of the piston. On the other hand, the pressure-fluid connection is interrupted near the end of the stroke movement of the piston (27) by the head (4) and by the shoulder (28). The pressure fluid required for the control of the control valve (7) can thus be obtained in a simple manner from the front chamber (8) of the cylinder space through the passage (13) in the piston head. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI741267A FI50940C (en) | 1974-04-25 | 1974-04-25 | Percussion device driven by a pressure fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7504591L true SE7504591L (en) | 1975-10-27 |
SE423686B SE423686B (en) | 1982-05-24 |
Family
ID=8505353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7504591A SE423686B (en) | 1974-04-25 | 1975-04-21 | A MEDIUM A PRESSURIZED DRIVER |
Country Status (15)
Country | Link |
---|---|
JP (1) | JPS554554B2 (en) |
AT (2) | AT340346B (en) |
CH (1) | CH626823A5 (en) |
CS (1) | CS181292B2 (en) |
DE (1) | DE2516546C2 (en) |
FI (1) | FI50940C (en) |
FR (1) | FR2268602B1 (en) |
GB (1) | GB1478435A (en) |
IT (1) | IT1037190B (en) |
NO (1) | NO137349C (en) |
PL (2) | PL94933B1 (en) |
RO (1) | RO74260A (en) |
SE (1) | SE423686B (en) |
SU (1) | SU776569A3 (en) |
ZA (2) | ZA752371B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI56430C (en) * | 1975-10-20 | 1982-08-09 | Tampella Oy Ab | SLAGANORDNING DRIVEN AV EN TRYCKVAETSKA |
US4062411A (en) * | 1975-12-05 | 1977-12-13 | Gardner-Denver Company | Hydraulic percussion tool with impact blow and frequency control |
US4298074A (en) * | 1976-08-09 | 1981-11-03 | American Safety Equipment Corporation | Surgical device using impulse motor |
DE2654875A1 (en) * | 1976-12-03 | 1978-06-08 | Hausherr & Soehne Maschf | DEVICE FOR AUTOMATICALLY STOPPING A PRESSURIZED IMPACT DEVICE |
GB1556754A (en) * | 1976-12-10 | 1979-11-28 | Af Hydraulics | Hydraulically-actuated percussive device with overstroke damping |
SU745670A1 (en) * | 1977-01-04 | 1980-07-07 | Институт Горного Дела Со Ан Ссср | Air-distributing device of impact-action pneumatic machines |
ES469097A1 (en) * | 1978-03-31 | 1980-06-16 | Crespo Jose T G | Hydraulic apparatus for producing impacts |
DE3015696A1 (en) * | 1980-04-24 | 1981-10-29 | Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter | HYRAULIC DRIVING DEVICE FOR A DRIVING TOOL |
DK0543806T3 (en) * | 1990-07-12 | 1996-05-06 | G Drill Ab | Mountain drill with hydraulic drive in the borehole |
SE528033C2 (en) | 2004-03-12 | 2006-08-15 | Atlas Copco Constr Tools Ab | Hydraulic hammer |
FI124781B (en) | 2009-03-26 | 2015-01-30 | Sandvik Mining & Constr Oy | Type of device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2906244A (en) * | 1958-02-24 | 1959-09-29 | Sheldon L Christensen | Hydraulic pavement breaker |
DE1281370B (en) * | 1963-09-06 | 1968-10-24 | Krupp Gmbh | Impact device with hydraulically reciprocating pistons |
GB1125755A (en) * | 1965-04-23 | 1968-08-28 | Vickers Ltd | Improvements in or relating to hydraulically operated tools |
DE1703753A1 (en) * | 1968-07-05 | 1972-02-24 | Ingbuero Dipl Ing Friedrich He | Hydraulically operated impact device |
US3796050A (en) * | 1972-05-18 | 1974-03-12 | Foster Miller Ass | High energy rate actuator |
-
1973
- 1973-04-09 RO RO7381944A patent/RO74260A/en unknown
-
1974
- 1974-04-25 FI FI741267A patent/FI50940C/en active
-
1975
- 1975-04-07 CS CS7500002378A patent/CS181292B2/en unknown
- 1975-04-10 IT IT22205/75A patent/IT1037190B/en active
- 1975-04-10 GB GB1487875A patent/GB1478435A/en not_active Expired
- 1975-04-15 AT AT285875A patent/AT340346B/en not_active IP Right Cessation
- 1975-04-15 ZA ZA00752371A patent/ZA752371B/en unknown
- 1975-04-15 AT AT285975A patent/AT340347B/en not_active IP Right Cessation
- 1975-04-15 ZA ZA00752372A patent/ZA752372B/en unknown
- 1975-04-16 DE DE2516546A patent/DE2516546C2/en not_active Expired
- 1975-04-21 SE SE7504591A patent/SE423686B/en not_active IP Right Cessation
- 1975-04-23 CH CH517975A patent/CH626823A5/en not_active IP Right Cessation
- 1975-04-23 PL PL1975179882A patent/PL94933B1/pl unknown
- 1975-04-24 JP JP5018775A patent/JPS554554B2/ja not_active Expired
- 1975-04-24 PL PL1975179896A patent/PL113145B1/en unknown
- 1975-04-24 SU SU752127440A patent/SU776569A3/en active
- 1975-04-24 NO NO751476A patent/NO137349C/en unknown
- 1975-04-25 FR FR7513061A patent/FR2268602B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2516546C2 (en) | 1982-07-29 |
FR2268602A1 (en) | 1975-11-21 |
SE423686B (en) | 1982-05-24 |
PL94933B1 (en) | 1977-09-30 |
FI50940C (en) | 1976-09-10 |
JPS554554B2 (en) | 1980-01-30 |
SU776569A3 (en) | 1980-10-30 |
FI126774A (en) | 1975-10-26 |
PL113145B1 (en) | 1980-11-29 |
AT340347B (en) | 1977-12-12 |
ZA752371B (en) | 1976-03-31 |
NO137349C (en) | 1978-02-22 |
NO751476L (en) | 1975-10-28 |
IT1037190B (en) | 1979-11-10 |
FI50940B (en) | 1976-05-31 |
CH626823A5 (en) | 1981-12-15 |
CS181292B2 (en) | 1978-03-31 |
NO137349B (en) | 1977-11-07 |
GB1478435A (en) | 1977-06-29 |
AU7993475A (en) | 1976-10-14 |
FR2268602B1 (en) | 1982-02-19 |
AT340346B (en) | 1977-12-12 |
ZA752372B (en) | 1976-03-31 |
ATA285975A (en) | 1977-04-15 |
DE2516546A1 (en) | 1975-11-20 |
ATA285875A (en) | 1977-04-15 |
RO74260A (en) | 1980-10-30 |
JPS50144967A (en) | 1975-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7504591-4 Effective date: 19931110 Format of ref document f/p: F |