SE190829C1

SE190829C1 -

Info

Publication number: SE190829C1
Authority: SE
Publication date: 1964-01-01

Description

PATENT PATENTTID FRAN DEN 14 NOVEMBER 1961 BEVIDAT DEN 27 FEBRUARI 1964 PUBLICERAT DEN 4 AUGUST] 1964 SVERIGE K LASS INTERNATIONELLSVENSK F 02 g46 d:5/01 PATENT- OCH REGISTRE RI NGSVERKET Ans. 11 59711962 inkom den 29110 1962 utlagd den 9112 1963 B S OLSSON, JOHANNESHOV Tryckmediumpkverkad kolv- eller membranmotor FOreliggande uppfinning avser en tryckmediumpaverkad kolv- eller membranmotor med en cylinder omslutande en fram- och atergaende arbetskolv, som Sr fast fOrbunden med en genom cylindern gaende kolvstang, samt med en dubbelventil for tillforande och avledande av tryckmediet. Dubbelventilen be-star av ph en gemensam ventilspindel sittande ventilplattor, som under inverkan av kolvstangen aro anordnade att vaxelvis anligga mot ventilsaten till bildande av en, tilloppsoch en avloppsventil. PATENT PATENT PERIOD FROM 14 NOVEMBER 1961 PROVIDED ON 27 FEBRUARY 1964 PUBLISHED ON 4 AUGUST] 1964 SWEDEN CLASS INTERNATIONAL SWEDISH F 02 g46 d: 5/01 PATENT AND REGISTRATION AGENCY Ans. The present invention relates to a piston or diaphragm motor actuated with a cylinder enclosing a reciprocating working piston, which has a fixed piston with a cylinder through it. and with a double valve for supplying and diverting the pressure medium. The double valve consists of a valve plate sitting on a common valve stem, which under the influence of the piston rod are arranged to abut alternately against the valve set to form an inlet and an outlet valve.

Uppfinningen kannetecknas huvudsakligen av att ventilplattorna aro forsedda med ansatser, som aro anordnade att tatande glida in i ventilsatenas genomstromningshal, varvid ringformiga spalter aro utformade mellan ventilplattorna och satena och vilka spatter vid en begransad rorelse av ventilplattorna fran resp. site farbindas med utrymmen utanfor ventilplattorna utan att genomstramningshalen frilaggas f6r tryclonediets genonastromning. Ventilspindeln at lampligen forsedd med ett anslag for ett motsvarande anslag pa kolvstangen, sa att kolvstangen vid sin rorelse kan forskjuta ventilspindeln och ventilplattorna for att ornkasta dessa frail ett till ett annat lage. The invention can be characterized mainly in that the valve plates are provided with projections which are arranged to slide inwardly into the flow-through hall of the valve seats, annular gaps being formed between the valve plates and the seats and which spatter at a limited movement of the valve plates from resp. site is connected to spaces outside the valve plates without exposing the flow-through tail to the genome flow of the tryclone diet. The valve stem should be suitably provided with an abutment for a corresponding abutment on the piston rod, so that the piston rod in its movement can displace the valve stem and the valve plates in order to project them from one bearing to another.

Medelst uppfinningen vinner man fordelen av att sued manoverrorelser erfordras far att inf8ra och avleda tryckmediet i resp. frau motorns arbetsrum. Kraften som erfordras for manoverrorelsen blir liten genom •att ventilernas omstallningsrorelse sker i tva tempon, dar det i arbetsrummet radande avertrycket i forsta tempot ledes bakom avloppsventilens ventilplatta till den under denna ventilplatta bildade ringformiga spalten. Ph grund av den darvid erhallna tryckutjamningen Indian ventilplattans Over- och undersida kan kolvstangen med en relativt ringa kraft darefter paverka ventilspindeln, sh att avloppsventilens genomstramningshal helt frilaggas for genomstromning av tryckmediet frail arbetsrummet via den ringformiga spalten till avloppet. Ma novermekanismen for tryckmecliets tillfOrande och avledande frau arbetsrummet utsattes harigenom for osedvanligt litet slitage. By means of the invention, one gains the advantage that sued maneuvers are required to introduce and divert the pressure medium in resp. frau engine workspace. The force required for the maneuvering movement is reduced by • the rearrangement movement of the valves takes place in two tempos, where the overpressure radiating in the working space in the first tempo is led behind the valve plate of the drain valve to the annular gap formed under this valve plate. Due to the resulting pressure equalization of the upper and lower side of the Indian valve plate, the piston rod can then affect the valve stem with a relatively small force, so that the flow valve of the drain valve is completely exposed for flow of the pressure medium from the working space via the annular gap to the drain. However, the mechanism for supplying and diverting the pressure medium from the working space was thereby subjected to unusually little wear.

Med hanvisning till bifogade ritning skall liar en fordelaktig utforingsform av uppfinningen narmare beskrivas. Ritningen visar en motor sedd i genomskarning. With reference to the accompanying drawing, an advantageous embodiment of the invention will be described in more detail. The drawing shows an engine seen in section.

Motorn bestir av en cylinder 15 omslutande en fram- och aterghende arbetskolv 16, som Sr fast fOrbunden med en genom cylindern gaende kolvstfing 9, vilken nar genom arbetskolven ett stycke in i tryck- eller arbetsrummet 17, dar den i anden Or utformad med ett invandigt utrymme 18. The engine consists of a cylinder 15 enclosing a reciprocating working piston 16, which is fixedly connected to a piston stem 9 passing through the cylinder, which passes through the working piston some distance into the pressure or working space 17, where in the spirit Or it is formed with an internal space 18.

PS en gemensam ventilspindel 6, axiellt fOrskjutbar i forhallande till kolvstangen 9, Sr en ventilplatta 1 patradd, sa att den anligger mot en ansats eller ett stoppanslag 13. Yentilplattan Sr avsedd att anligga mot ett med genomstromningshal 19 f6rsett ventilsate, vilket genomstrOmningshal 19 star 1 forbindelse med motorns avlopp 20. Mot ventilplattans mot satet vanda sida anligger en ph ventilspindeln patradd distanshylsa 14, vars motsatta kant anligger mot undersidan av en ytterligare pa ventilspindeln patradd ventilplatta 2, vilken ir avsedd att anligga 'not ett med genomstromningshal 21 forsett ventilsate. Genomstromningshalet leder tryckmediet till motorns arbetsrum 17 frail doss inloppsoppning 22. Utanph ventilplattan 2 Sr p5 ventilspindelns ande pagangade muttrar eller dylikt for att fasthalla ventilplattorna 1 och 2 vid ventilspindeln ph bestamt avstand frau varandra. Ventilplattan 1 med sitt sate bildar motorns avloppsventil och ventilplattan 2 med sitt sate dess inloppsventil. Avloppsventilens ventilplatta 1 Sr storre an inloppsventilens. PS a common valve spindle 6, axially displaceable in relation to the piston rod 9, is a valve plate 1 patraded, so that it abuts against a shoulder or a stop stop 13. The valve plate is intended to abut against a valve set provided with a flow hall 19, which flow hall 19 is 1 connection to the engine drain 20. Against the valve side facing the valve plate abuts a ph valve spindle spaced sleeve 14, the opposite edge of which abuts the underside of a further valve plate 2 threaded on the valve stem, which is intended to abut a valve seat provided with a flow-through hall 21. The flow-through tail leads the pressure medium to the engine working space 17 frail doss inlet opening 22. Utanph valve plate 2 Sr p5 valve spindle spirit pagangan nuts or the like to hold valve plates 1 and 2 at valve stem ph determined distance from each other. The valve plate 1 with its sate forms the engine drain valve and the valve plate 2 with its sate its inlet valve. Drain valve plate 1 Sr larger than inlet valve.

Ventilplattorna 1 och 2 aro Utbildade med ansatser 3 och 4 avpassade efter och anordnade att inga i ansatser i resp. ventilsatens genomstromningshal 19 och 21. Ansatserna aro sS utformade, att ringformiga spalter erhallas mellan ventilplattorna och satena, nar resp. ventilplatta anligger mot ventilsatet. Vid Dupl. kl. 88 b: 1 2— — en begransad rorelse av ventilplattorna i riktning fran resp. sate aro spalterna anordnade att fOrbindas med utrymmen 17 och 22 utanfor ventilplattorna utan att ventilerna Oppnas for tryckmediets genomstriimning. Valve plates 1 and 2 aro Trained with approaches 3 and 4 adapted to and arranged that none in approaches in resp. the flow rates of the valve set 19 and 21. The approaches are designed so that annular gaps are obtained between the valve plates and the sets, when resp. valve plate abuts the valve set. At Dupl. at 88 b: 1 2— - a limited movement of the valve plates in the direction from resp. The gaps are arranged to be connected to spaces 17 and 22 outside the valve plates without the valves being opened for the flow of the pressure medium.

Ventilspindeln 6 stracker sig utanfor avloppsventilens ventilplatta 1 och nar in i utrymmet 18 i kolvstangens 9 ande. Dar är pa ventilspindeln 6 patradda axiellt rOrliga hylsor 10 och 11, vilka dro rorliga mot varandra mot fjaderverkan och fran varandra med fjaderverkan medelst en fjader 24. Den inre 11 av de hada hylsorna, sett fran ventilspindelns fria ande, är langre an den yttre 10 och ligger an mot avloppsventilens ventilplatta 1, nar avloppsventilen ar stangd for tryckmediets genomstromning. lifilet for ventilspindeln i kolvstangens dude Or utformat som ett an-slag f8r den inre hylsans 11 mot den yttre hylsan 10 vanda ande, och utrymmets 18 inre del är utformad med anslag f Or den yttre hylsan 10. Ventilspindelns fria ande är forsedd med ett anslag 7, mot vilket den yttre hylsan i vissa forskjutningslagen kommer att anligga. The valve stem 6 extends outside the valve plate 1 of the drain valve and reaches into the space 18 in the spirit of the piston rod 9. There are axially movable sleeves 10 and 11 mounted on the valve stem 6, which pull movably against each other against the spring action and from each other by the spring action by means of a spring 24. The inner 11 of the had sleeves, seen from the free spirit of the valve stem, is longer than the outer 10 and abuts against the valve plate 1 of the drain valve when the drain valve is closed for the flow of the pressure medium. The valve stem for the valve stem in the piston rod dude Or is formed as an abutment of the inner sleeve 11 facing the outer sleeve 10, and the inner part of the space 18 is formed with abutment f Or the outer sleeve 10. The free spirit of the valve stem is provided with an abutment 7, against which the outer sleeve in certain displacement laws will abut.

Motorn med omstallningsmekanismen far avlopps- och tilloppsventilerna fungerar pa foljande satt: Arbetskolven 1l antages befinna sig i inskjutet lage i arbetscylindern 15 och avloppsventilen Or stangd, medan tillloppsventilen fir oppen. Tryckmediet tillfores motorn genom tilloppsledningen 22 och passerar genom tilloppsventilens genomstrEnnningshal 21 till arbetsrummet 17 pa haksidan av arbetskolven 16. Arbetskolven, som Mlles intryckt av ett rotorfjader 23 i cylindern 15, utovar ett mottryck mot det instrommande tryckmediet. I arbetsrummet 17 uppbygges ett Over tryck allteftersom tryckmediet tillföres. Avloppsventilens ventilplatta 1 hMles stangd dels genom Mt den inre hylsan 11 pa ventilspindeln 6 ligger an mot ventilplattan 1 med fjaderverkan och dels genom att tryckmediet paverkar ventilplattan 1. Pa. ventiIplattans 1 undersida rader da atmosfartryck. SO smaningom har tryckmediets overtryck i arbetsrummet 17 upparbetats sit Mgt, att arbetskolvens 16 returfjadertryck overvinns. Arbetskolven bOrjar rara sig i riktning ut ur arbetscylindern 15 och tager kolvstangen 9 med sig. Kolvstangens ande glider langs den inre 11 av de hada hylsorna pa ventilspindeln 6. Den yttre hylsan 10 foljer kolvstangen vid dennas rOrelse genom att den mellan hylsorna 10 och 11 inspanda fjadern 24 expanderar. Efter att ha Hirt sig ett visst hestamt stycke, beroende av hylsans 11 langd, kommer det yttre anslaget i utrymmet 18 i kolvstangens 9 ande att pa.verka en flans p0 den inre hylsan 11. Fjadertrycket liar da. heft upphort att paverka den inre hylsan och avloppsventilens ventilplatta 1 kvarhalles endast genom tryckmediets Overtryck i arbetsrummet 17. Nar det yttre anslaget i utrymraet 18 1 kolvstangens 9 ande vid dennas ytterligare forskjutning i riktning ur cylindern 15 nar fram till och kan pdverka flansen ph den inre hylsan tager kolvstangen med den inre hylsan i sin rorelse, sa. att denna fOrskjuts ,utat Tangs ventilspindeln, under det att fjadertrycket mellan hylsorna 10 och 11 Ater horjar upparbetas. I narheten av arbetskolvens 16 yttersta lOge i cylindern kommer den inre hylsan 11 att pressa pa bakkanten av den yttre hylsan 10. Anslaget 7 p0 ventilspindelns fria ande anligger mot motsatta kanten pa den yttre hylsan 10. Ett ryck uppstar I ventilspindeln 6. Darvid kommer ventilplattan 1 att lyftas nagot och tryckmediet i arbetsrummet 17 rusar in i den ringformiga spalten under ventilplattan 1. Genom utformningen av ansatserna 3 i genomstromningshalet 19 i ventils,5.tet och pa ventilplattans 1 undersida Or emellertid vid denna begransade rorelse genomstromningshalet 19 fortfarande stangt for tryckmediets genomstromning till avloppet 20. The engine with the change-over mechanism makes the drain and inlet valves function as follows: The work piston 11 is assumed to be in the inserted bearing in the working cylinder 15 and the drain valve Or closed, while the inlet valve is open. The pressure medium is supplied to the engine through the inlet line 22 and passes through the inlet valve 21 through the working space 17 on the chin side of the working piston 16. The working piston, which is pressed by a rotor spring 23 in the cylinder 15, exerts a back pressure against the inflowing pressure medium. In the work space 17, an Over pressure is built up as the pressure medium is supplied. The valve plate 1 of the drain valve is closed partly by the inner sleeve 11 on the valve stem 6 abutting against the valve plate 1 with a spring action and partly by the pressure medium affecting the valve plate 1. Pa. the underside of the valve plate 1 rows da atmospheric pressure. So gradually the overpressure of the pressure medium in the working space 17 has been worked up so that the return spring pressure of the work piston 16 is overcome. The working piston starts to move in the direction out of the working cylinder 15 and takes the piston rod 9 with it. The spirit of the piston rod slides along the inner 11 of the had sleeves on the valve stem 6. The outer sleeve 10 follows the piston rod in its movement by expanding the spring 24 between the sleeves 10 and 11. After having a certain horse-drawn piece, depending on the length of the sleeve 11, the outer stop in the space 18 in the spirit of the piston rod 9 will affect a flange on the inner sleeve 11. The spring pressure then decreases. has ceased to affect the inner sleeve and the valve plate 1 of the drain valve is retained only by the overpressure of the pressure medium in the working space 17. When the outer stop in the space 18 in the spirit of the piston rod 9 at its further displacement in the direction of the cylinder 15 reaches and can affect the flange the sleeve takes the piston rod with the inner sleeve in its motion, sa. that this is displaced, outside the Tang valve spindle, while the spring pressure between the sleeves 10 and 11 is again worked up. Near the outermost position of the working piston 16 in the cylinder, the inner sleeve 11 will press on the rear edge of the outer sleeve 10. The stop 7 on the free end of the valve stem abuts against the opposite edge of the outer sleeve 10. A jerk arises in the valve stem 6. 1 to be lifted slightly and the pressure medium in the working space 17 rushes into the annular gap under the valve plate 1. By the design of the shoulders 3 in the flow hole 19 in the valves, 5.tet and on the underside of the valve plate 1 However, at this limited movement the flow tail 19 is still closed to the pressure medium flow to the drain 20.

Genom att ventilplattorna 1 och 2 befinna sig pa konstant avstand fran varandra och are att betrakta som en enhet i ett ventilpaket kommer givetvis ventilplattan 2 att flytta sig i motsvarande grad i riktning mot sitt ventilsate, varvid genomstromningshalets 21 area i inloppsventilen minskar. Because the valve plates 1 and 2 are at a constant distance from each other and are to be regarded as a unit in a valve package, the valve plate 2 will of course move to a corresponding degree towards its valve set, whereby the area of the flow-through tail 21 in the inlet valve decreases.

DO tryckmediet leds fran arbetsrummet 17 till den ringformiga spalten under avloppsventilens ventilplatta 1 sker en tryckutjamning och den ringformiga spalten och arbetsrummet 17 erhaller samma tryck. Delta medfor, att den sammanpressade fjadern 24 mellan hylsorna 10 och 11 pa ventilspindeln 6 orkar expandera nagot, varvid den yttre hylsan 10 pressas ytterligare i riktning mot det inre anslaget i utryrnmet 18 i kolvstangens 9 ande. Vid denna rorelse tager den yttre hylsan 10 med sig ventilspindeln 6, eftersom dennas anslag 7 i dess fria ande ater kommer att ligga an mot den yttre hylsan 10. Avloppsventilens ventilplatta 1 rycks harigenom helt loss Iran satet och den ringformiga spalten och arbetsrummet 17 erhaller fri forbindelse for genomstromning till avloppet 20. Samtidigt kommer tilloppsventilens ventilplatta 2 att helt ligga an mot sitt sate och stanga forbindelsen for tryckmediets tillforsel till arbetsrummet, vilket harigenom avlastas fran tryckmediet och erhaller atmosfartryck. Pa grund av avlastningen kan arbetskolvens 16 returfjader i cylindern ater borja trycka arbetskolven i riktning inat cylindern, varvid Oven kolvstangen 9 byter rOrelseriktning. Det yttre anslaget i kolvstangens inre utrymme 18 upphOr att paverka den inre hylsan 11 pa ventilspindeln och fjadern mellan hylsorna expanderar och f8rflyttar den inre hylsan langs ventilspindeln i riktning mot avloppsventilens ventilplatta 1. Den paverkar darvid denim ventilplatta att inga i sitt sate och stanga avloppsventilen for genomstromning. Samtidigt Opp- — —3 nas tilloppsventilen for tillforsel av nytt tryckmedium till arbetsrummet 17. The pressure medium is led from the working space 17 to the annular gap under the valve plate 1 of the drain valve, a pressure equalization takes place and the annular gap and the working space 17 receive the same pressure. Delta means that the compressed spring 24 between the sleeves 10 and 11 on the valve spindle 6 is able to expand slightly, whereby the outer sleeve 10 is pressed further in the direction of the inner stop in the cavity 18 in the spirit of the piston rod 9. During this movement, the outer sleeve 10 carries the valve spindle 6 with it, since its abutment 7 in its free spirit will abut against the outer sleeve 10. The valve plate 1 of the drain valve is thereby completely pulled off the Iran seat and the annular gap and the working space 17 receive free connection for flow to the drain 20. At the same time, the valve plate 2 of the inlet valve will abut completely against its seat and close the connection for the supply of the pressure medium to the working space, which is thereby relieved from the pressure medium and receives atmospheric pressure. Due to the unloading, the return spring of the working piston 16 in the cylinder can again start to push the working piston in the direction of the cylinder, whereby the upper piston rod 9 changes direction of movement. The outer stop in the inner space 18 of the piston rod ceases to affect the inner sleeve 11 on the valve stem and the spring between the sleeves expands and moves the inner sleeve along the valve stem in the direction of the drain valve valve plate 1. It thereby affects the denim valve plate and no valve in its valve. flow. At the same time, the inlet valve for supplying new pressure medium to the workroom 17 is opened.

Uppfinningen är givetvis icke begransad till den har visade och beskrivna utforingsf or-men, utan den kan betraffande det konstruktiva utforandet av enskilda detaljer utformas pa skilda satt. The invention is of course not limited to the embodiments shown and described, but it can be designed in different ways with regard to the constructive design of individual details.

Claims

Patent claim:

Pressure medium-actuated piston or diaphragm motor with a cylinder enclosing a reciprocating working piston fixedly connected to a piston rod passing through the cylinder, saint with a double valve for supplying and diverting the pressure medium, which double valve consists of a common spring spindle seated valve plates, which under the influence of the piston rod are arranged to abut alternately against the valve set to form an inlet and a drain valve, characterized in that the valve plates (1, 2) are provided with projections (3, 4), which are arranged to actuate slide into the flow-through hall (19, 21) of the valve seats, annular gaps being formed between the valve plates and the seats and which gaps in a limited rift of the valve plates frau resp. sate is connected to spaces outside the valve plates without exposing the flow hole to the flow of the pressure medium.

Engine according to patent claim 1, characterized in that the valve plate (1) of the drain valve is larger than the inlet valve (2).

Engine according to claim 2, characterized in that the valve stem (6) is combined with a stop (7) for a corresponding stop on the piston rod (9), so that the piston rod can displace the valve stem (6) during its movement and the valve plates (1 and 2) for reversing these frau one to another layer.

4. An engine according to claim 3, characterized in that the valve stem (6) is displaceably arranged relative to the piston rod (9) and with its portion provided with the stop (7) located in a space in one end of the piston rod, which portion is provided with sleeves (10, 11) slidably arranged in relation to each other and in relation to the valve stem (6), which are movable against each other against the action of the spring and from each other by the action of the spring, and the space in one of the piston rods is internally formed with abutments adapted to the sleeves ( 10, 11) from each other water edges or sides.

Engine according to claim 4, Urinary characterized in that the stop (7) on the valve stem (6) inside the piston rod (9) is arranged to limit the displacement of one (10) of the sleeves (10, 11) slidably arranged on the valve stem.

6. An engine according to any one of the preceding claims, characterized in that the valve plates (1 and 2) are patterned on one end of the valve stem (6), from which spirit the inner of the valve plates abuts against a stop stop (13) on the valve stem and the outer ( 2) towards one side of one. spacer sleeve (14), the opposite edge of which abuts the inner valve plate (1), whereby the valve plates (1 and 2) are fixed at a certain distance from each other. Request publications: Ornbud: Civ.ing. R Swenson, Stockholm Stockholm 1964. Kungl. Boktr. P. A. Norstedt & Saner. 640089