SE186638C1

SE186638C1 -

Info

Publication number: SE186638C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: B G 'Malmberg Foreliggande uppfinning hanfor sig till en manoverapparat med i en cylinder anbragt kolv, som under inverkan av ett tryckmedium utfor en slagrOrelse. Dylika manoverapparater anvandas for astadkommande av en rorelse eller forflyttning av ett element, en ma-skin eller en del darav. Det Sr kant att astad, komma en stotdampande uppbromsning av rorelseenergin hos manoverapparatens r8rliga del, sasom kolven, i slutet av slagrorelsen ena och eventuellt bada riktningarna. En vanligen forekommande anordning baserar sig pa, att luftens avgang frau den obelastade kolvsidan strypes. Strypningen pabbrjas, da kolven annu befinner sig ph ett avstand Iran cylinderns gavelande, sa att den dar befintliga luften komprimeras och ger upphov till ett rnottryck. En effektiv uppbromsning av denna art fordrar en relativt Mug uppbromsningsstracka, vilket innebar, att manoverapparaten far en stone langd an i och for sig erforderligt. Apparatens vcrkningsgrad blir darjarnte betydligt fiirsamrad, da det »skadliga rummet, dvs. den lure cylindervolymen, som ej ingar i slagvolymen, blir st8rre. Uppfinningen avser att eliminera dessa olagenheter, vilket vasentligen ernas darigenom, att tvenne kolvelement aro anordnade att mellan sig och manovercylindern bilda ett slutet rum och att kolvelementen aro inbordes forskjutbara pa sa satt, att da det ena kolvelementet stoppas upp i slutet av kolvslaget, det andra fortsatter och darigenom en minskning av rummets volym och kompression av dari befintligt medium uppstar. rummet mynnar foretradesvis en ledning, anordnad att forbindas med en tryckkalla for ett gasformigt medium for sliapande av ett overtryck i rummet fore minskningen av detsammas volym, och enligt en sarskilt lamp-Jig utforingsform Over en backventil forbunden med kolvens for tryckmediet utsatta sida. Kolvelementen aro vidare i forsta hand forskjutbart monterade pa en kolvstang, som Dupl. kl. 60: 30; 68 d: begransar deras rorelse i riktning fran varandra. Inventor: B G 'Malmberg The present invention relates to a control device with a piston arranged in a cylinder, which under the influence of a pressure medium performs a striking motion. Such actuators are used to effect a movement or displacement of an element, a machine or a part thereof. It is possible to achieve a shock-damping deceleration of the kinetic energy of the movable part of the maneuvering device, such as the piston, at the end of one stroke and possibly both directions. A common device is based on restricting the exit of the air from the unloaded piston side. The choke is started, as the piston is still at a distance from the end of the cylinder, so that the air present there is compressed and gives rise to a pressure. An effective braking of this kind requires a relatively Mug braking distance, which meant that the maneuvering device had a stone length required per se. The efficiency of the device is therefore significantly reduced, as the "harmful space", ie. the small cylinder volume, which is not included in the stroke volume, becomes larger. The invention aims to eliminate these irregularities, which are essentially achieved in that two piston elements are arranged to form a closed space between them and the control cylinder and that the piston elements are displaceable in such a way that when one piston element is stopped at the end of the piston stroke, the other continues and thereby a decrease in the volume of the room and compression of the existing medium arises. the space preferably opens a line, arranged to be connected to a pressure source for a gaseous medium for grinding an overpressure in the space for the reduction of its volume, and according to a special lamp-Jig embodiment Over a non-return valve connected to the side of the piston exposed to the pressure medium. The piston elements are further primarily slidably mounted on a piston rod, such as Dupl. at 60:30; 68 d: delimits their movement in the direction of each other.

Uppfinningen skall ncdan narmare bcskrivas under hanvisning till A bifogade ritning som exempel visade utfeiringsform, varvid Sven andra uppfinningen kannetecknande egenskaper skola angivas. A ritningen visas en langdsektion genom en enligt uppfinningen utford manoverapparat. The invention will now be described in more detail with reference to the drawing attached to A as an exemplary embodiment, in which case the characteristics of the second invention may be stated. The drawing shows a longitudinal section through a maneuvering device according to the invention.

A ritningen betecknar 10 den cylindriska delen av apparatens holje, i andarna tillsluten av gavlar 12 och 14. En kolvstang 16 Sr ford genom gaveln 14, som for detta andamat Sr forsedd med en lagerhylsa 18 och tatningar 20. Kolvstancsen 16 Sr utanfOr cylinderholjet forsedd med ett parti 22 for anslutning till det element, som skall manovreras av apparaten. In the drawing, 10 denotes the cylindrical part of the housing of the apparatus, closed in the spirits by ends 12 and 14. A piston rod 16 is passed through the end 14, which for this purpose is provided with a bearing sleeve 18 and seals 20. The piston punch 16 is outside the cylinder housing provided with a portion 22 for connection to the element to be maneuvered by the apparatus.

Tvenne kolvelement 24, 26 aro med glidpassning anbragta i cylindern 10 samt ph kolvstangen 16. De hada kolvelementen aro foretradesvis av samma inbordes utf8rande men monterade pa kolvstangen sa att de i stort sett utgora spegelbilden av varandra. Harigenom kan en stotdampningseffekt A.stadkommas i bagge .slagriktningarna av kolvstangen. Av ett antal, sasom tre runt omkretsen fOrdelade fjadrar 28 hallas kolvelementen normalt till anliggning mot en bricka 30 resp. en ansats 32 ph kolvstAngen 16. Brickan 30 lases av muttrar 34 gangade pa stangens cylindern belagna andparti 36. Two piston elements 24, 26 are slidably fitted in the cylinder 10 and the piston rod 16. The had piston elements are preferably of the same inboard design but mounted on the piston rod so that they substantially form the mirror image of each other. As a result, a shock absorption effect can be achieved in the ram directions of impact of the piston rod. Of a number, such as three springs 28 distributed around the circumference, the piston elements are normally inclined to abut against a washer 30 resp. a shoulder 32 ph piston rod 16. The washer 30 is loaded by nuts 34 threaded on the rod cylinder coated duct portion 36.

MeHan kolvelementen 24, 26 bildas ett sintet rum 38, varvid mellan cylindern 10 och kolvelementen aro anbragta packningar 40 samt mellan kolvstangen och kolvelementen resp. padessa sittande lagerhylsor 42 packningar 44, sh. att i rummet kan rada ett Overtryck. Rummet 38 kan forbindas med cylinderrummet utanfor vartdera kolvelementet medelst en kanal 46, med vilken .samverkar en fjaderbaekventil 48, som halles i lage av en skruv 50. DA cylinderrummet pa hOger sida om .kolvelementet 26 fylles med tryck- 2— — medium (tryckluft) genom en anslutning 52 i gaveln 14 for utforande av ett kolvslag i riktning fran hoger till vanster i figuren, fylles aven kolvrummet 38 via detta kolvelements kanal 46 med tryckmedium. Det andra kolvelementets 24 ventil 48 ar da stangd. Om daremot tryckluft tillfores apparatens motsatta sida genom en anslutning 54 i gaveln 12, instrommar tryckluften i kolvrummet 38 genom kolvelementets 24 kanal 46, medan det andra kolvelementets 26 backventil 48 al. tillsluten. A synthetic chamber 38 is formed between the piston elements 24, 26, gaskets 40 being arranged between the cylinder 10 and the piston elements and between the piston rod and the piston elements resp. padessa seated bearing sleeves 42 gaskets 44, sh. that in the room can line an Overprint. The space 38 can be connected to the cylinder space outside each piston element by means of a channel 46, with which a spring-loaded valve 48 cooperates, which is held in position by a screw 50. When the cylinder space on the right side of the piston element 26 is filled with pressure medium (compressed air ) through a connection 52 in the end wall 14 for making a piston stroke in the direction from right to left in the figure, the piston space 38 is also filled via the channel 46 of this piston element with pressure medium. The valve 48 of the second piston element 24 is then closed. On the other hand, if compressed air is supplied to the opposite side of the apparatus through a connection 54 in the end 12, the compressed air flows into the piston space 38 through the channel 46 of the piston element 24, while the non-return valve 48a1 of the other piston element 26. closed.

Vid utforingsexemplet har bade kolvelementet 24 och 26 en fjadrande ring 56 resp. 58, som vid slutet av kolvslaget star emot andgaveln 12 resp. 14. Gaveln 12 har en urtagning 60, som passar till kolvstangens 16 andparti 36 och pa detta sittande element 30, 34. In the exemplary embodiment, both piston elements 24 and 26 have a resilient ring 56 and 56, respectively. 58, which at the end of the piston stroke rests against the end cap 12 resp. 14. The end 12 has a recess 60, which fits into the end portion 36 of the piston rod 16 and on this seated element 30, 34.

Apparaten verkar pa foljande satt: I figuren antages tryckluft hava paslappts genom den hiSgra anslutningen 52. Tryckluften har Sven intrangt i kolvrummet 38, sa att har rader overtryck. Cylinderrummet utanfor kolvelementet 24 fir daremot trycklost. TryckInnen for kolvstangen 16 och de 'hada kolvelementen 24, 26 at vanster. Vid slutet av slaget hejdas kolvelementet 24 genom att den elastiska ringen 56 traffar gaveln 12. Emellertid fortsatter kolvstangen 16 och det av denna tvangsvis rnedtagna kolvelementet 26 at vanster till foljd av den inneboende rOrelseenergin, varvid den redan komprimerade, i rummet 38 innestangda luftvolymen ytterligare sammantryckes och harunder uppfangar och dampar stoten i sjalva andlaget. Fjadrarna 28 tjana till att aterf5ra kolvelementet 24 till ursprungligt 'age, sedan kolvstangen vant. Vid manoverslag i motsatt riktning tillfores tryckluft genom anslutningen 54, varvid kolvriunmet 38 uppladdas via kolvelementets 24 kanal 46. Den fi5rsta uppbromsningen av slaget intraffar I och med att den elastiska ringen 58 i kolvelementet 26 slar mat andgaveln 14. I ,detta fall fortsatter kolvstangen 16 och kolvelementet 24, yarvid den slut:- liga dampningen sker genom att luftvolymen i rummet 38 reduceras och en ytterligare kompression har ager rum. The apparatus operates as follows: In the figure, compressed air is assumed to have been passed through the right connection 52. The compressed air has Sven penetrated into the piston chamber 38, so that rows have overpressure. The cylinder space outside the piston element 24, on the other hand, is depressurized. Push the piston rod 16 and the piston elements 24, 26 to the left. At the end of the stroke, the piston element 24 is stopped by the elastic ring 56 hitting the end 12. However, the piston rod 16 and the piston element 26 forcibly removed therefrom continue to turn due to the inherent kinetic energy, whereby the already compressed volume of air trapped in the space 38 is further compressed. and under it catches and steams the shock in the spirit itself. The springs 28 serve to return the piston element 24 to its original age after the piston rod has won. When operating in the opposite direction, compressed air is supplied through the connection 54, the piston ring 38 being charged via the channel 46 of the piston element 24. The first braking of the stroke occurs as the elastic ring 58 in the piston element 26 strikes the end of the piston rod 14. and the piston element 24, the final evaporation taking place by reducing the volume of air in the space 38 and having a further compression in the space.

Uppfinningen Sr givetvis lake begransad till den visade utfOringsformen utan kan varieras i vidstracktaste bemarkelse inom ramen av den till grund fOr densamma liggande iden. The invention is of course limited to the embodiment shown, but can be varied in the broadest sense within the framework of the idea underlying it.

Claims

Patent claims:

Maneuvering device with a pressure medium-actuated piston arranged in a cylinder (10), the sensing energy of which is braked in the abutment (-Idaena), characterized in that two piston elements (24, 26) are arranged to form a closed space (38) between them and the control cylinder. that the piston elements are embedded in different baths mounted on a piston rod (16) on such salt that when one piston element is stopped up at the end of the piston stroke, the other continues together with the piston rod and thereby a reduction of the volume of the chamber and a rod movement slowing compression of existing medium arises.

Maneuvering device according to claim 1, characterized in that in the space, a line (46) opens, arranged to be connected to a pressure source for a gaseous medium for creating an overpressure in the space (38) for the reduction of its volume.

3. An actuator according to claims 1 and 2, characterized in that line (46) al. Over a non-return valve (48) connected to the side of the piston exposed to the pressure medium.

Actuator according to claims 1-3, characterized in that between the cylinder wall (12 and 14) of the cylinder (10) and part of the piston element (24; 26) first braked, an elastic member (56; 58) is arranged, which initiates the braking. .

Maneuvering device according to one of the preceding patent claims, characterized by one or more springs (28) arranged between the piston elements (24, 26) for their return to the initial layer after a reduction of the room volume.

Maneuvering device according to one of the preceding patent claims, characterized in that the piston elements (24, 26) are incorporated by the same embodiment to achieve 11.1 - a deceleration of the piston movement in the direction of impact by means of volume reduction of the piston space enclosed pressure medium. Request publications: