GB561681A - Improvements in or relating to the automatic control of hydraulic pumps - Google Patents
Improvements in or relating to the automatic control of hydraulic pumpsInfo
- Publication number
- GB561681A GB561681A GB1674842A GB1674842A GB561681A GB 561681 A GB561681 A GB 561681A GB 1674842 A GB1674842 A GB 1674842A GB 1674842 A GB1674842 A GB 1674842A GB 561681 A GB561681 A GB 561681A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- accumulator
- piston
- valve
- clutch
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
561,681. Fluid-pressure servomotor control systems ; valves. ARMANDIAS, L. S., and ASSOCIATED MESSIER INVESTMENTS, Ltd. Nov. 25; 1942, No. 16748. [Class 135] A control valve device for controlling the clutch in the drive of a hydraulic pump comprises a pair of lift valve members actuated by oppositely extending piston rods on a piston subject to the controlling pressure. In the hydraulic circuit shown in Fig. 1, a pump 1 draws liquid from a reservoir 4 and delivers it to a pressure-loaded accumulator 7 with a service outlet 11. The pump 1 is driven through a clutch held in engagement by a spring device 3 and released by admitting pressure fluid to a power device 2 under the control of a valve device 18. This device comprises a cylinder 36 closed at each end by covers 43, 44, held in place by screwed plugs 39, 40 and housing a piston 41 provided with piston rods 50, 51 passing through stuffing boxes 48, 49 in the covers into valve chambers in the plugs. One side of the piston is subject to the pressure in the accumulator 7, while the other side is subject to the pressure in an auxiliary loading accumulator 22. Each valve chamber has an inlet and outlet connection and houses a spring-loaded lift valve formed on the end of a ported tubular member. When the pressure in the accumulator 7 rises above that in the loading accumulator 22, the piston moves to left to open valve 56 to connect pipes 16 and 33 and admit pressure to the clutch releasing power device. In a modified arrangement, the clutch is released by spring and is moved into engagement by fluid pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1674842A GB561681A (en) | 1942-11-25 | 1942-11-25 | Improvements in or relating to the automatic control of hydraulic pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1674842A GB561681A (en) | 1942-11-25 | 1942-11-25 | Improvements in or relating to the automatic control of hydraulic pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB561681A true GB561681A (en) | 1944-05-31 |
Family
ID=10082944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1674842A Expired GB561681A (en) | 1942-11-25 | 1942-11-25 | Improvements in or relating to the automatic control of hydraulic pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB561681A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2538383A (en) * | 1948-09-23 | 1951-01-16 | Sandwell Percy Ritchie | Antisurge valve for hydraulic wood grinders |
CN111365304A (en) * | 2020-04-02 | 2020-07-03 | 江苏省机械研究设计院有限责任公司 | Transmission hot sprocket link joint tensioning hydraulic device |
-
1942
- 1942-11-25 GB GB1674842A patent/GB561681A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2538383A (en) * | 1948-09-23 | 1951-01-16 | Sandwell Percy Ritchie | Antisurge valve for hydraulic wood grinders |
CN111365304A (en) * | 2020-04-02 | 2020-07-03 | 江苏省机械研究设计院有限责任公司 | Transmission hot sprocket link joint tensioning hydraulic device |
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