GB1314072A - Fluid system - Google Patents
Fluid systemInfo
- Publication number
- GB1314072A GB1314072A GB2293070A GB2293070A GB1314072A GB 1314072 A GB1314072 A GB 1314072A GB 2293070 A GB2293070 A GB 2293070A GB 2293070 A GB2293070 A GB 2293070A GB 1314072 A GB1314072 A GB 1314072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- units
- load
- line
- valve
- flow
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C3/00—Circuit elements having moving parts
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1314072 Fluid operated positioning apparatus INTERNATIONAL BUSINESS MACHINES CORP 12 May 1970 [14 May 1969] 22930/70 Heading F1P An assembly of piston and cylinder units 15, Fig. 21, of differing strokes connected together for positioning a load are supplied with hydraulic fluid through respective pilot operated valves (not shown) fed from a line 47, 51, 52, Fig. 2B, the line containing a flow sensing system 23 which sends fluid signals to a logic unit 20, which unit 20 causes inter alia unlocking of the load and an increase in the throttling effect of a valve 17, Fig. 21, in the lines 141, 142 between the units 15 and the pilot operated valves. With the load locked in an adjusted position, opening of a different selection of the pilot operated valves first causes some units 15 to extend while others contract, the load remaining stationary. Because the load itself is not moved this operation (termed "exchange") is performed at high speed, the logic unit 20 automatically arranging for the flow sensing unit 23 and the valve 17 to allow a high flow rate to the units 15. Thus logic unit 20 causes pressurization of a line 38 and consequential opening of a valve 40. This allows pressure from a supply system described in Specification 1314075 .Fig. 2C, (not shown) and connected to the line 47, to flow through parallel paths 49, 42 to the line 51, 52 leading via the pilot operated valves to the lines 141, 142 (depending on the positions of the pilot operated valves) and thence through the valve 17 to the units 15. During "exchange" the throttling effect of the valve 17 is low. When "exchange" is completed fluid no longer flows through orifices 50 in spring loaded pistons 35, 36 in the respective parallel flow paths 49, 42 and the pistons 35, 36 are moved to the positions shown. Thus the previous connection of lines 24, 25 to a return 46 is momentarily closed. The logic unit 20 detects closure of the line 25 and acts to unlock the load and to de-pressurize lines 38, 94. The release of pressure in the line 94 allows a spring to force a spool 143 of the valve 17 to increase its throttling of the hydraulic fluid which then commences to flow to those units 15 required to move the load. The release of pressure from the line 38 allows the valve 40 to close so that the flow rate to the units 15 is reduced by having to flow only through the path 49. The units 15 are connected to a movement damping device, Fig. 2J, (not shown) as described in Specification 1314071 the device being arranged to be returned and held in a central position after re-positioning of the load. An air reader Fig. 2D, (not shown) as described in Specification 1314073 has a perforated tape advanced in steps to cause the pneumatic re-positioning of pilot valves controlling the said pilot operated valves which control the individual units.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82442569A | 1969-05-14 | 1969-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1314072A true GB1314072A (en) | 1973-04-18 |
Family
ID=25241381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2293070A Expired GB1314072A (en) | 1969-05-14 | 1970-05-12 | Fluid system |
Country Status (3)
Country | Link |
---|---|
US (1) | US3641877A (en) |
JP (1) | JPS5210999B1 (en) |
GB (1) | GB1314072A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3976098A (en) * | 1974-01-02 | 1976-08-24 | International Basic Economy Corporation | Hydraulic motor control apparatus |
US3945299A (en) * | 1974-06-24 | 1976-03-23 | Albany International Industries, Inc. | Linear positioning apparatus |
US4102248A (en) * | 1976-03-08 | 1978-07-25 | Westinghouse Electric Corp. | Protective system for pneumatically operated devices |
US4349885A (en) * | 1979-03-20 | 1982-09-14 | Crosby Valve & Gage Company | Set pressure measuring system |
ITMI20041197A1 (en) * | 2004-06-15 | 2004-09-15 | Harken Italy Spa | CONTROL SYSTEM FOR ACTIVATION-DEACTIVATION OF MOTORCYCLE TRANSMISSIONS IN SAILBOATS |
WO2007065082A2 (en) * | 2005-11-29 | 2007-06-07 | Elton Daniel Bishop | Digital hydraulic system |
US8286426B2 (en) * | 2005-11-29 | 2012-10-16 | Digital Hydraulic Llc | Digital hydraulic system |
DE102014108848A1 (en) * | 2014-06-25 | 2015-12-31 | Construction Tools Gmbh | Device for pressure monitoring |
CN112936254B (en) * | 2021-03-16 | 2022-09-13 | 合肥工业大学 | Energy-saving working unit of hydraulic industrial robot with auxiliary driving unit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395618A (en) * | 1965-05-28 | 1968-08-06 | Otis Eng Co | Operator devices |
US3274902A (en) * | 1965-10-22 | 1966-09-27 | Deere & Co | Hydraulic control system |
-
1969
- 1969-05-14 US US824425A patent/US3641877A/en not_active Expired - Lifetime
-
1970
- 1970-04-20 JP JP45033060A patent/JPS5210999B1/ja active Pending
- 1970-05-12 GB GB2293070A patent/GB1314072A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5210999B1 (en) | 1977-03-28 |
US3641877A (en) | 1972-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |