GB1069505A - Hydraulic motor control units - Google Patents
Hydraulic motor control unitsInfo
- Publication number
- GB1069505A GB1069505A GB106466A GB106466A GB1069505A GB 1069505 A GB1069505 A GB 1069505A GB 106466 A GB106466 A GB 106466A GB 106466 A GB106466 A GB 106466A GB 1069505 A GB1069505 A GB 1069505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spool
- restriction
- land
- port
- valve
- 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
- 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
-
- 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
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
-
- 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
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- 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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- 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
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant 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
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1,069,505. Hydraulic apparatus. ELECTRO-HYDRAULICS Ltd. Jan. 10, 1966, No. 1064/66. Heading F1P. [Also in Division F2] Pump pressure is continuously supplied to the rod side of a jack piston (28) Fig. 1 (not shown) through lines 5, 7 and a variable restriction (6, 13) which is never completely closed and which is controlled by a land (26) on the spool (21) of a manually actuated valve (4) which according to its position either connects the full area side of the jack piston through a line (17) to a return reservoir or to a supply pump resulting in the jack piston being moved by said continuously applied pressure or against it and at a variable speed. The restriction (6) which is constant is in parallel with the variable restriction (13) and the spool land (26) is wider than land (24) controlling a valve port (14) to which line (17) is connected whereby initial movement of valve spool (21) in either direction to open port (14) results in port (13) remaining closed and the flow to or from the rod side of the jack piston being confined to restriction (6). In a modification flow restriction to and from the rod side of piston (28) Fig. 3 (not shown) is effected through a port (50) controlled by an underlapping land (40) of a second spool valve (30) the spool (35) of which is spaced from spool (21) but moves therewith.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB106466A GB1069505A (en) | 1966-01-10 | 1966-01-10 | Hydraulic motor control units |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB106466A GB1069505A (en) | 1966-01-10 | 1966-01-10 | Hydraulic motor control units |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1069505A true GB1069505A (en) | 1967-05-17 |
Family
ID=9715552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB106466A Expired GB1069505A (en) | 1966-01-10 | 1966-01-10 | Hydraulic motor control units |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1069505A (en) |
-
1966
- 1966-01-10 GB GB106466A patent/GB1069505A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1040379A (en) | Fluid motor control system | |
GB1488530A (en) | Hydraulic control apparatus | |
GB1245703A (en) | Hydraulic reversing device for reciprocating part of a machine | |
GB1112618A (en) | Adjustable, metered, directional flow control arrangement | |
ES454533A1 (en) | Hydraulic secateurs | |
GB1420424A (en) | High pressure fluid intensifier and method | |
GB1273431A (en) | A fluid energy transmission system | |
GB1380226A (en) | Fluid supply apparatus | |
ES442776A1 (en) | Control systems for variable capacity hydraulic machines | |
GB1263118A (en) | A hydraulic control system | |
GB1045785A (en) | Hydraulic valving system | |
GB1297761A (en) | ||
GB1269724A (en) | Automatic flow control valve | |
GB1069505A (en) | Hydraulic motor control units | |
GB1105709A (en) | Improvements in pumps | |
GB1234924A (en) | A control system for a hydraulic control device | |
GB1472656A (en) | Reversible hydrostatic transmission | |
GB1314389A (en) | Pilot operated control valve | |
GB1099140A (en) | Dual engine controls | |
GB1262488A (en) | Hydraulic apparatus for including variable-delivery pumps | |
GB1216837A (en) | Liquid fuel injection pumps | |
GB1262075A (en) | Systems for operating internal combustion engine valves by means of fluid pressure | |
GB1514489A (en) | Hydraulic cab-tilting systems | |
GB1463716A (en) | Device for speed control of prime movers | |
GB1110872A (en) | Hydraulic drives |