GB1312327A - Hydraulic control ciruit - Google Patents
Hydraulic control ciruitInfo
- Publication number
- GB1312327A GB1312327A GB4983070A GB4983070A GB1312327A GB 1312327 A GB1312327 A GB 1312327A GB 4983070 A GB4983070 A GB 4983070A GB 4983070 A GB4983070 A GB 4983070A GB 1312327 A GB1312327 A GB 1312327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spool
- line
- distributer
- oct
- springs
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
- F16H61/4104—Flushing, e.g. by using flushing valves or by connection to exhaust
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/02—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motors at a distance from liquid pumps
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/27—Directional control by means of the pressure source
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/61—Secondary circuits
- F15B2211/611—Diverting circuits, e.g. for cooling or filtering
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/61—Secondary circuits
- F15B2211/613—Feeding circuits
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/62—Cooling or heating means
-
- 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
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/005—With rotary or crank input
- F15B7/006—Rotary pump input
-
- 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
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/008—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with rotary output
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
1312327 Hydraulic power systems SOC D'APPLICATIONS DES MACHINES MOTRICES 20 Oct 1970[24 Oct 1969] 49830/70 Heading F1P In a closed circuit hydraulic power transmission system, a variable output reversible pump 2 is connected via lines 3, 4 to a fixed capacity motor 1, each line 3, 4, being connected to a spool valve distributer 5 which by-passes some of the fluid in the lower pressure line through a cooler 8 and tank 7 before being returned to the same line by a make-up pump 16. The spool 20 is spring biased to a central position from which it is displaced by high pressure fluid entering chamber 25 or 26 via a throttled line 23 or 24, the by-passed fluid entering the space between the spool lands from line 22 or 21 and exiting via non-return valve 32. In a modification, Fig.2 (not shown), the throttles 27 in lines 23, 24 are replaced by non-return valves, which may be located inside the distributer, Fig.4 (not shown). The springs 28 biasing the spool 20 may act through rings which limit the extension of the springs by engagement with a shoulder within the distributer housing Fig. 3 (not shown). This provides for a greater pressure differential between the ends of the spool 20 before the latter moves. A stop (41) may be provided to limit movement of the spool 20.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6936698A FR2063661A5 (en) | 1969-10-24 | 1969-10-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1312327A true GB1312327A (en) | 1973-04-04 |
Family
ID=9042080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4983070A Expired GB1312327A (en) | 1969-10-24 | 1970-10-20 | Hydraulic control ciruit |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH531653A (en) |
DE (1) | DE2051949A1 (en) |
FR (1) | FR2063661A5 (en) |
GB (1) | GB1312327A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0111752A1 (en) * | 1982-11-22 | 1984-06-27 | Deere & Company | Control of an adjustment device for a variable displacement hydrostatic pump |
GB2245659A (en) * | 1988-07-16 | 1992-01-08 | Hiroshi Sato | Fluid pressure supplying apparatus |
CN103452965A (en) * | 2013-09-16 | 2013-12-18 | 蒙阴县兴达机械厂 | Oil-way cooling system of small walk-behind road roller |
US20180345340A1 (en) * | 2015-11-23 | 2018-12-06 | Sms Group Gmbh | Volume flow regulating valve |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3603016A1 (en) * | 1986-01-31 | 1987-08-06 | Oerlikon Boehringer Gmbh | Flushing valve |
ES2272931T3 (en) * | 2003-02-09 | 2007-05-01 | Rapid Technic Ag | CONTROL SYSTEM FOR A HYDRAULIC DRIVE DEVICE. |
-
1969
- 1969-10-24 FR FR6936698A patent/FR2063661A5/fr not_active Expired
-
1970
- 1970-10-06 CH CH1480870A patent/CH531653A/en not_active IP Right Cessation
- 1970-10-20 GB GB4983070A patent/GB1312327A/en not_active Expired
- 1970-10-22 DE DE19702051949 patent/DE2051949A1/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0111752A1 (en) * | 1982-11-22 | 1984-06-27 | Deere & Company | Control of an adjustment device for a variable displacement hydrostatic pump |
GB2245659A (en) * | 1988-07-16 | 1992-01-08 | Hiroshi Sato | Fluid pressure supplying apparatus |
CN103452965A (en) * | 2013-09-16 | 2013-12-18 | 蒙阴县兴达机械厂 | Oil-way cooling system of small walk-behind road roller |
US20180345340A1 (en) * | 2015-11-23 | 2018-12-06 | Sms Group Gmbh | Volume flow regulating valve |
US10974296B2 (en) * | 2015-11-23 | 2021-04-13 | Sms Group Gmbh | Volume flow regulating valve |
Also Published As
Publication number | Publication date |
---|---|
CH531653A (en) | 1972-12-15 |
DE2051949A1 (en) | 1971-05-06 |
FR2063661A5 (en) | 1971-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |