METHOD OF DRIVING PNEUMATIC ACTUATOR-UNIT OF SPEED CHANGE GEAR
PURPOSE:To prevent a state, in which speed control becomes impossible, by supplying air to both pressure operating chambers so that the piston takes the neutral position, exhausting the air from both pressure operating chambers and then supplying throttled air to one of the operating chambers. CONST...
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| creator | SESHIMA TATSUYA |
| description | PURPOSE:To prevent a state, in which speed control becomes impossible, by supplying air to both pressure operating chambers so that the piston takes the neutral position, exhausting the air from both pressure operating chambers and then supplying throttled air to one of the operating chambers. CONSTITUTION:Pressure operating chambers 14 and 15 are connected to directional control valves MVA, and MVB. Both chambers 14 and 15 are also connected to a pressurized air tank 72. A speed control valve MVS, when it is turned on, throttles the air via an orifice 73 so that an actuator speed becomes controllable. When the actuator is in operation, the directional control valves MVA and MVB are turned on, and the piston is moved to the neutral position. Next, after an interval of, for example, 50ms during which time both valves are kept turned on, both valves MVA and MVB are turned off. Then, after an interval of, for example, 100ms, the air in the operating chamber is discharged, thereby turning the pressure in the chamber into the atmospheric pressure. Next, the speed control valve MVS is turned on, and supply of throttled air to the pressure operating chamber 14 is started. At the same time, the directional control valve MVA is turned on, and the piston 11 is moved leftward. Accordingly, the throttled air can be supplied to one of the pressure operating chambers 14 and 15, after the air in both chambers has completely been discharged. |
| format | Patent |
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CONSTITUTION:Pressure operating chambers 14 and 15 are connected to directional control valves MVA, and MVB. Both chambers 14 and 15 are also connected to a pressurized air tank 72. A speed control valve MVS, when it is turned on, throttles the air via an orifice 73 so that an actuator speed becomes controllable. When the actuator is in operation, the directional control valves MVA and MVB are turned on, and the piston is moved to the neutral position. Next, after an interval of, for example, 50ms during which time both valves are kept turned on, both valves MVA and MVB are turned off. Then, after an interval of, for example, 100ms, the air in the operating chamber is discharged, thereby turning the pressure in the chamber into the atmospheric pressure. Next, the speed control valve MVS is turned on, and supply of throttled air to the pressure operating chamber 14 is started. At the same time, the directional control valve MVA is turned on, and the piston 11 is moved leftward. Accordingly, the throttled air can be supplied to one of the pressure operating chambers 14 and 15, after the air in both chambers has completely been discharged.</description><language>eng</language><subject>ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES ; AUXILIARY DRIVES FOR VEHICLES ; BLASTING ; ENGINEERING ELEMENTS AND UNITS ; GEARING ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; VEHICLES IN GENERAL ; WEAPONS</subject><creationdate>1988</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19880121&DB=EPODOC&CC=JP&NR=S6313941A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19880121&DB=EPODOC&CC=JP&NR=S6313941A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SESHIMA TATSUYA</creatorcontrib><title>METHOD OF DRIVING PNEUMATIC ACTUATOR-UNIT OF SPEED CHANGE GEAR</title><description>PURPOSE:To prevent a state, in which speed control becomes impossible, by supplying air to both pressure operating chambers so that the piston takes the neutral position, exhausting the air from both pressure operating chambers and then supplying throttled air to one of the operating chambers. CONSTITUTION:Pressure operating chambers 14 and 15 are connected to directional control valves MVA, and MVB. Both chambers 14 and 15 are also connected to a pressurized air tank 72. A speed control valve MVS, when it is turned on, throttles the air via an orifice 73 so that an actuator speed becomes controllable. When the actuator is in operation, the directional control valves MVA and MVB are turned on, and the piston is moved to the neutral position. Next, after an interval of, for example, 50ms during which time both valves are kept turned on, both valves MVA and MVB are turned off. Then, after an interval of, for example, 100ms, the air in the operating chamber is discharged, thereby turning the pressure in the chamber into the atmospheric pressure. Next, the speed control valve MVS is turned on, and supply of throttled air to the pressure operating chamber 14 is started. At the same time, the directional control valve MVA is turned on, and the piston 11 is moved leftward. 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CONSTITUTION:Pressure operating chambers 14 and 15 are connected to directional control valves MVA, and MVB. Both chambers 14 and 15 are also connected to a pressurized air tank 72. A speed control valve MVS, when it is turned on, throttles the air via an orifice 73 so that an actuator speed becomes controllable. When the actuator is in operation, the directional control valves MVA and MVB are turned on, and the piston is moved to the neutral position. Next, after an interval of, for example, 50ms during which time both valves are kept turned on, both valves MVA and MVB are turned off. Then, after an interval of, for example, 100ms, the air in the operating chamber is discharged, thereby turning the pressure in the chamber into the atmospheric pressure. Next, the speed control valve MVS is turned on, and supply of throttled air to the pressure operating chamber 14 is started. At the same time, the directional control valve MVA is turned on, and the piston 11 is moved leftward. Accordingly, the throttled air can be supplied to one of the pressure operating chambers 14 and 15, after the air in both chambers has completely been discharged.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS |
| title | METHOD OF DRIVING PNEUMATIC ACTUATOR-UNIT OF SPEED CHANGE GEAR |
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