GB925601A - Improvements in multi-position fluid motors - Google Patents
Improvements in multi-position fluid motorsInfo
- Publication number
- GB925601A GB925601A GB18404/60A GB1840460A GB925601A GB 925601 A GB925601 A GB 925601A GB 18404/60 A GB18404/60 A GB 18404/60A GB 1840460 A GB1840460 A GB 1840460A GB 925601 A GB925601 A GB 925601A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- rod
- stop
- chambers
- spring
- 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
- 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
- F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
- F15B11/125—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of digital actuators, i.e. actuators in which the total stroke is the sum of individual strokes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
- B60T15/048—Controlling pressure brakes of railway vehicles
-
- 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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
-
- 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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
- F16H2061/307—Actuators with three or more defined positions, e.g. three position servos
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Basic Packing Technique (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
925,601. Fluid-pressure servomoto rcontrol systems; hydraulic apparatus. WESTING- HOUSE AIR BRAKE CO. May 25, 1960 [May 26, 1959], No. 18404/60. Classes 69 (2) and 135. With the handle 90 of a rotary control valve 3, Fig. 1, in the neutral position N, Fig. 2, the piston-rod 2 of a multi-position fluid motor 1 is urged into the corresponding position N, shown, by fluid from a reservoir 4 flowing into chambers 30, 39, whilst chambers 40, 20 and 6 are connected to atmosphere. The rod 2 may be connected to operate a vehicle power transmission, not shown, when the valve handle is moved to position F1, the chambers 20 and 19, Fig. 1, are vented, the latter being interconnected by ports 18, and chambers 30, 39, 40 and 6 are pressurized whereupon stop pistons 13, 14 remain in the neutral position shown, whilst a piston 15 travels rightwardly until it abuts a stop 121; at the same time, the power piston 16 moves leftwardly in opposition to a spring 45 until it abuts piston 15 and the rod 2 adopts the F1 position. Upon turning the valve handle 90, Fig. 2, into the F2 position chamber 40 is vented so that the power piston 16 travels leftwardly against the action of the spring 49 and carries with it the piston 15 until the stem 31 of stop piston 14 is contacted at which point the rod 2 is in the F2 position. To move the rod 2 to the F3 position the control valve is correspondingly adjusted whereby chamber 39 is now vented whereupon the power piston 16 moves further to the right, taking with it the piston 15 and stop piston 14 in opposition to the spring 49 until the piston 14 abuts the stem 23 of the other stop piston 13. To complete the leftward travel of the power piston 16 the control valve is moved into the position F4 so venting chamber 30, whereby all the pistons are translated leftwards by the pressure in chamber 6 until lugs 29 and stop piston 13 contact an end plate 9. The control valve may now be adjusted to select any of the positions F3-N for the rod 2 or either of two reverse positions R1, R2. A lost-motion connection 36 is provided between stems 31 and 23. Assuming the valve and rod are in the N position, then upon adjusting the former to the R1 position chambers 40 and 6 are vented and chambers 30, 39, 19 and 20 are pressurized so that the piston 15 is held against the stem 31 and the power piston 16 is urged leftwardly against the spring 49 until it abuts a stop 21. With the valve in the R2 position the chambers 19, 20 and 40 are open to pressure fluid, whereupon the power piston 16 travels rightwardly, carrying with it its cylinder 17, the piston 15 following until it contacts a stop 121. The control valve may now be adjusted to cause the rod 2 to move by steps or directly into any of the other six positions. The spring 49 is connected to the rod 2 by plates 62, 65, the latter being attached to the rod and a cup member 59, which are interconnected by pins 69; the spring 49 is contained between the plates 62 and member 59 and any movement of the power piston from the neutral N position is resisted by the spring, so that if, for any reason, pressure fluid is unavailable, the piston 16 and rod 2 are automatically returned to the neutral position. In other forms, the rod has six, five or three positions depending upon the number of pistons 13, 14 and 15 which are omitted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US815966A US3035549A (en) | 1959-05-26 | 1959-05-26 | Multi-position power cylinder and control means therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB925601A true GB925601A (en) | 1963-05-08 |
Family
ID=25219305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18404/60A Expired GB925601A (en) | 1959-05-26 | 1960-05-25 | Improvements in multi-position fluid motors |
Country Status (3)
Country | Link |
---|---|
US (1) | US3035549A (en) |
ES (1) | ES258369A1 (en) |
GB (1) | GB925601A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1369514A (en) * | 1963-07-03 | 1964-08-14 | Soc Es Energie Sa | Improvements made to progressive control valve systems, in particular those for gas turbine installations |
US3832937A (en) * | 1972-12-29 | 1974-09-03 | Up Right Inc | Pneumatic telescopic hoist having three or more steps of extension |
US4838145A (en) * | 1987-06-18 | 1989-06-13 | The United States Of America As Represented By The Secretary Of Commerce | Multiple actuator hydraulic system and rotary control valve therefor |
SE531713C2 (en) | 2005-11-30 | 2009-07-14 | Kongsberg Automotive As | Cylinder with 6 fixed positions |
DE112016007191T5 (en) * | 2016-10-05 | 2019-07-04 | New York Air Brake Llc | electronic brake valve control device with adjustable friction and locking torque |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2299211A (en) * | 1939-05-11 | 1942-10-20 | Automotive Prod Co Ltd | Fluid pressure remote control system |
US2396643A (en) * | 1943-04-07 | 1946-03-19 | Reconstruction Finance Corp | Hydraulic controlling mechanism |
US2630786A (en) * | 1951-06-14 | 1953-03-10 | Westinghouse Air Brake Co | Multiple position fluid pressure motor |
FR1124969A (en) * | 1954-03-23 | 1956-10-22 | Rolls Royce | Improvements to cylinders |
US2792813A (en) * | 1956-04-17 | 1957-05-21 | Carl M Fixman | Servo-operated hydraulic power system |
-
1959
- 1959-05-26 US US815966A patent/US3035549A/en not_active Expired - Lifetime
-
1960
- 1960-05-25 ES ES0258369A patent/ES258369A1/en not_active Expired
- 1960-05-25 GB GB18404/60A patent/GB925601A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3035549A (en) | 1962-05-22 |
ES258369A1 (en) | 1960-11-16 |
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