BR9807664A - Dispositivo de válvula - Google Patents
Dispositivo de válvulaInfo
- Publication number
- BR9807664A BR9807664A BR9807664-7A BR9807664A BR9807664A BR 9807664 A BR9807664 A BR 9807664A BR 9807664 A BR9807664 A BR 9807664A BR 9807664 A BR9807664 A BR 9807664A
- Authority
- BR
- Brazil
- Prior art keywords
- piston
- space
- hydraulic system
- check valve
- valve
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/14—Arrangements for stretching the chain saw
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/47—Flow control in one direction only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/707—By endless band or chain knife
- Y10T83/7226—With means to guard the tension
- Y10T83/7239—With means to vary distance between pulley or sprocket axes
- Y10T83/7251—Including means to yieldably bias pulley
- Y10T83/7258—By fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
- Compressor (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
"DISPOSITIVO DE VáLVULA". A presente invenção relaciona-se a um dispositivo para ajuste automático da pressão de fluido a uma válvula de aperto hidráulica (5) ativa em um mecanismo de serra entre um suporte (1) e uma barra de serra (2) deslocável em uma direção longitudinal relativa ao suporte para ajuste do aperto de uma corrente de serra (3) correndo ao redor da barra de serra e um mecanismo de acionamento arranjado no suporte, onde o pistão de aperto (5) é conectado a um sistema hidráulico via o dispositivo de válvula, pelo qual o dispositivo de válvula inclui um espaço em forma cilíndrica (7) e um dispositivo de pistão (8) adequado para caber e se mover entre duas posições de batente naquele espaço, em que o espaço (7) antes do dispositivo pistão (8) em sua posição avançada, tem conexões de abertura, parcialmente ao sistema hidráulico e referidas abaixo como a entrada (9), e parcialmente ao pistão de aperto (5) e referida abaixo como a saída (10), pelo fato de que um dispositivo de válvula de retenção que pode ser aberta é arranjado na saída (10), e que na sua posição ativa permite o fluido fluir somente em uma direção do espaço (7) para o pistão de aperto (5), pelo fato de que o dispositivo pistão (8) é colocado sob tensão por uma mola em uma direção avançada em direção a saída (10) e que em sua posição de batente avançada é capaz de afetar o dispositivo de válvula de retenção (11) de forma que ele se ergue em uma posição aberta, pela qual o dispositivo pistão (8), quando o sistema hidráulico está em um estado não pressurizado, é causado pela inflência da mola erguer sua posição avançada e abrir a válvula de retenção, e que no estado pressurizado do sistema hidráulico, é recuado pela pressão no espaço (7) a sua posição traseira que ativa a válvula de retenção (11) para evitar fluido hidráulico fluir do pistão de aperto (5) para o espaço (7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9700413A SE512961C2 (sv) | 1997-02-06 | 1997-02-06 | Ventilorgan för spänning av sågkedja |
PCT/SE1998/000195 WO1998034768A1 (en) | 1997-02-06 | 1998-02-03 | Valve arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9807664A true BR9807664A (pt) | 2000-02-15 |
Family
ID=20405695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9807664-7A BR9807664A (pt) | 1997-02-06 | 1998-02-03 | Dispositivo de válvula |
Country Status (8)
Country | Link |
---|---|
US (1) | US6311599B1 (pt) |
AU (1) | AU730397B2 (pt) |
BR (1) | BR9807664A (pt) |
CA (1) | CA2278733A1 (pt) |
FI (1) | FI122020B (pt) |
NO (1) | NO311790B1 (pt) |
SE (1) | SE512961C2 (pt) |
WO (1) | WO1998034768A1 (pt) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE512962C2 (sv) * | 1998-02-20 | 2000-06-12 | Sisu Logging Ab | Hydrauliskt sågkedjestäckande organ |
US6405629B1 (en) * | 1999-01-28 | 2002-06-18 | Heckler & Koch Gmbh | Ammunition magazine for beltless fed ammunition |
FI115706B (fi) | 1999-05-27 | 2005-06-30 | Ponsse Oyj | Ketjusaha |
US7185437B2 (en) * | 2002-11-15 | 2007-03-06 | Carlton Company | Chainsaw bar tensioning apparatus |
US7287330B1 (en) * | 2004-09-29 | 2007-10-30 | G&R Equipment, Llc | Chain saw automatic tensioner |
AT508397B1 (de) * | 2009-06-25 | 2011-04-15 | Prinz Gmbh & Co Kg | Kettensäge |
CN101690985B (zh) * | 2009-09-27 | 2011-09-14 | 华中科技大学 | 一种水压链锯 |
US9381666B1 (en) | 2013-04-23 | 2016-07-05 | Andrew M. Moody | Automatic chainsaw tensioning device |
NZ615444A (en) * | 2013-09-12 | 2014-12-24 | Waratah Nz Ltd | Saw apparatus with chain stretch detection |
FI129870B (fi) * | 2020-04-01 | 2022-10-14 | Kesla Oyj | Ketjusaha |
US20220402160A1 (en) * | 2021-06-21 | 2022-12-22 | Deere & Company | Saw apparatus with hydraulic tensioning |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2316997A (en) * | 1940-08-29 | 1943-04-20 | Reed Prentice Corp | Tensioning means for chain saws |
US3279508A (en) * | 1965-11-26 | 1966-10-18 | Mcculloch Corp | Chain saw bar |
US4382334A (en) * | 1981-07-01 | 1983-05-10 | Omark Industries, Inc. | Chain saw device |
US5395705A (en) | 1990-08-31 | 1995-03-07 | The Dow Chemical Company | Electrochemical cell having an electrode containing a carbon fiber paper coated with catalytic metal particles |
SE467488B (sv) * | 1990-12-10 | 1992-07-27 | Sandvik Ab | Faeste foer saagsvaerd |
SE502386C2 (sv) * | 1991-03-13 | 1995-10-09 | Hultdin Invest Ab | Anordning vid sågdon |
SE9102157L (sv) * | 1991-07-10 | 1992-07-20 | Sandvik Ab | Skyddsanordning vid saagsvaerd |
US5174029A (en) * | 1991-12-11 | 1992-12-29 | Jt Investments | Chain saw tensioning mechanism |
US6032373A (en) * | 1996-09-05 | 2000-03-07 | Peterson; Robin A. | Methods and apparatus for adjusting chain saw tension |
-
1997
- 1997-02-06 SE SE9700413A patent/SE512961C2/sv not_active IP Right Cessation
-
1998
- 1998-02-03 WO PCT/SE1998/000195 patent/WO1998034768A1/en active IP Right Grant
- 1998-02-03 AU AU60103/98A patent/AU730397B2/en not_active Expired
- 1998-02-03 CA CA002278733A patent/CA2278733A1/en not_active Abandoned
- 1998-02-03 BR BR9807664-7A patent/BR9807664A/pt active Search and Examination
- 1998-02-03 US US09/355,884 patent/US6311599B1/en not_active Expired - Lifetime
-
1999
- 1999-07-29 NO NO19993705A patent/NO311790B1/no not_active IP Right Cessation
- 1999-08-02 FI FI991664A patent/FI122020B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE512961C2 (sv) | 2000-06-12 |
NO993705L (no) | 1999-07-29 |
SE9700413L (sv) | 1998-08-07 |
AU730397B2 (en) | 2001-03-08 |
FI19991664A (fi) | 1999-08-02 |
AU6010398A (en) | 1998-08-26 |
SE9700413D0 (sv) | 1997-02-06 |
US6311599B1 (en) | 2001-11-06 |
CA2278733A1 (en) | 1998-08-13 |
NO993705D0 (no) | 1999-07-29 |
NO311790B1 (no) | 2002-01-28 |
WO1998034768A8 (en) | 1999-09-10 |
FI122020B (fi) | 2011-07-29 |
WO1998034768A1 (en) | 1998-08-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TC | Change of name | ||
FF | Decision: intention to grant | ||
B11D | Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time |