IT1255170B - Circuito idraulico per il comando della direzione di movimento, della velocita' e della coppia di azionamento di una utenza. - Google Patents
Circuito idraulico per il comando della direzione di movimento, della velocita' e della coppia di azionamento di una utenza.Info
- Publication number
- IT1255170B IT1255170B ITMI921550A ITMI921550A IT1255170B IT 1255170 B IT1255170 B IT 1255170B IT MI921550 A ITMI921550 A IT MI921550A IT MI921550 A ITMI921550 A IT MI921550A IT 1255170 B IT1255170 B IT 1255170B
- Authority
- IT
- Italy
- Prior art keywords
- user
- movement
- speed
- pump
- valve
- Prior art date
Links
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
L'invenzione concerne un circuito idraulico per il comando della direzione di movimento, della velocità e della coppia di azionamento di un'utenza (1) idraulica, con una valvola (5) a percorsi nella conduttura (3) della pompa tra la pompa idraulica (2) e l'utenza (l), mediante la quale valvola l'utenza (1) e la pompa (2) sono collegabili con il ritorno al serbatoio (7). Nella conduttura (3) della pompa a monte della valvola a vie (5) è disposta inoltre una valvola di limitazione di pressione (6, 8) mediante la quale questa (3) è collegabile con il ritorno al serbatoio (7). Secondo l'invenzione lo stadio di precomando di questa valvola (6) di limitazione di pressione è regolabile idraulicamente in modo continuo per mezzo di un apparecchio di precomando (10), comandabile manualmente mediante una
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4121235 | 1991-06-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI921550A0 ITMI921550A0 (it) | 1992-06-24 |
ITMI921550A1 ITMI921550A1 (it) | 1993-12-24 |
IT1255170B true IT1255170B (it) | 1995-10-20 |
Family
ID=6434866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI921550A IT1255170B (it) | 1991-06-27 | 1992-06-24 | Circuito idraulico per il comando della direzione di movimento, della velocita' e della coppia di azionamento di una utenza. |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE4220656A1 (it) |
FR (1) | FR2678323B1 (it) |
GB (1) | GB2257270B (it) |
IT (1) | IT1255170B (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06173904A (ja) * | 1992-12-08 | 1994-06-21 | Komatsu Ltd | 旋回用油圧回路 |
DE19833489A1 (de) | 1998-07-24 | 2000-01-27 | Mannesmann Rexroth Ag | Hydraulische Schaltung |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB814618A (en) * | 1955-04-29 | 1959-06-10 | New York Air Brake Co | Hydraulic control systems more particularly for bulldozers and the like |
NL143015B (nl) * | 1970-09-11 | 1974-08-15 | Koppen Lethem Trading | Drukregelende tweeweg-afsluiter voor een hydraulisch circuit. |
US3646959A (en) * | 1970-10-12 | 1972-03-07 | Sperry Rand Corp | Power transmission |
GB2013841A (en) * | 1978-01-30 | 1979-08-15 | Caterpillar Tractor Co | Work fluid system |
JPS5663102A (en) * | 1979-10-29 | 1981-05-29 | Kobe Steel Ltd | Turning oil-pressure circuit for oil-pressure shovel, etc. |
JPS60249706A (ja) * | 1984-05-22 | 1985-12-10 | Toshiba Mach Co Ltd | 油圧制御装置 |
JPS612908A (ja) * | 1984-06-14 | 1986-01-08 | Toshiba Mach Co Ltd | 制御弁装置 |
US4794846A (en) * | 1985-02-23 | 1989-01-03 | Barmag Ag | Proportional action valve with a biased spring unproportionately variable to the load pressure |
JPH076525B2 (ja) * | 1987-01-09 | 1995-01-30 | 株式会社神戸製鋼所 | 建設機械の旋回油圧回路 |
US5129229A (en) * | 1990-06-19 | 1992-07-14 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system for civil-engineering and construction machine |
-
1992
- 1992-06-24 IT ITMI921550A patent/IT1255170B/it active IP Right Grant
- 1992-06-24 DE DE4220656A patent/DE4220656A1/de not_active Withdrawn
- 1992-06-26 FR FR9207922A patent/FR2678323B1/fr not_active Expired - Fee Related
- 1992-06-26 GB GB9213679A patent/GB2257270B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9213679D0 (en) | 1992-08-12 |
ITMI921550A0 (it) | 1992-06-24 |
FR2678323A1 (fr) | 1992-12-31 |
GB2257270B (en) | 1995-08-30 |
ITMI921550A1 (it) | 1993-12-24 |
DE4220656A1 (de) | 1993-01-07 |
GB2257270A (en) | 1993-01-06 |
FR2678323B1 (fr) | 1996-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2214432A1 (en) | Valve control | |
ATE160718T1 (de) | Tragbares rettungsgerät | |
HU904265D0 (en) | Process for controlling hydraulic systems and hydraulic transmission accomplishing said process | |
CA2097479A1 (en) | Hammer device | |
SE9501794L (sv) | Hydraulisk riktningsventil | |
IT1250513B (it) | Sistema di sterzatura idraulico per veicoli. | |
JPS5747240A (en) | Two system hydraulic pressure control valve | |
DK155872C (da) | Automatisk sugeoverfoeringsventil | |
CA2133267A1 (en) | Valve Control Unit for Hydraulic Actuator | |
JPS6467478A (en) | Power assist-steering gear | |
IT1255170B (it) | Circuito idraulico per il comando della direzione di movimento, della velocita' e della coppia di azionamento di una utenza. | |
FR2773142B1 (fr) | Dispositif d'entrainement pour ascenseur hydraulique | |
ES2119145T3 (es) | Dispositivo electrohidraulico de mando y valvula reductora de presion. | |
ES2133050A1 (es) | Accionamiento de ajuste maniobrado por medios de presion. | |
ES8505797A1 (es) | Dispositivo accionado por fluido bajo presion | |
DE59609666D1 (de) | Rastschaltvorrichtung | |
DE50201938D1 (de) | Hydromotoreinheit mit Bremseinrichtung | |
IT1218214B (it) | Valvola con stantuffo di comando in particolare con azionamento mediante magneti | |
DE3887932D1 (de) | Hydraulische Steuervorrichtung. | |
JPS571802A (en) | Actuator driven hydraulic circuit | |
JPS57184705A (en) | Multistep position controller for vacuum shift actuator | |
JPS5680506A (en) | Control circuit for actuator | |
JPS57140434A (en) | Oil-pressure circuit for oil-pressure shovel | |
FR2429347A1 (fr) | Dispositif de commande pour une transmission hydraulique, notamment pour l'installation hydraulique d'un tracteur | |
JPS57191036A (en) | Control circuit for injection process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970627 |