ITTV20110137A1 - HYDRAULIC DOUBLE ACTING SLOW MOTION - Google Patents
HYDRAULIC DOUBLE ACTING SLOW MOTION Download PDFInfo
- Publication number
- ITTV20110137A1 ITTV20110137A1 IT000137A ITTV20110137A ITTV20110137A1 IT TV20110137 A1 ITTV20110137 A1 IT TV20110137A1 IT 000137 A IT000137 A IT 000137A IT TV20110137 A ITTV20110137 A IT TV20110137A IT TV20110137 A1 ITTV20110137 A1 IT TV20110137A1
- Authority
- IT
- Italy
- Prior art keywords
- barrel
- fact
- hydraulic retarder
- valve
- valves
- Prior art date
Links
- 230000007423 decrease Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/483—Arrangements for providing different damping effects at different parts of the stroke characterised by giving a particular shape to the cylinder, e.g. conical
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/20—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with the piston-rod extending through both ends of the cylinder, e.g. constant-volume dampers
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/516—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement
- F16F9/5165—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics resulting in the damping effects during contraction being different from the damping effects during extension, i.e. responsive to the direction of movement by use of spherical valve elements or like free-moving bodies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
TITOLO: RALLENTATORE IDRAULICO A DOPPIO EFFETTO TITLE: DOUBLE ACTING HYDRAULIC RETARDER
DESCRIZIONE DESCRIPTION
La presente domanda ha per oggetto un rallentatore idraulico a doppio effetto. The present application relates to a double-acting hydraulic retarder.
Oggigiorno durante la realizzazione di una struttura oscillante avente in essa un carrello con una movimentazione lineare lungo il piano che oscilla, è sorto il problema di far rallentare questo carrello in modo graduato fino a fermarsi e successivamente ed essere al contempo veloce nel ripartire nell'altra direzione, una volta inclinato nuovamente il piano. Nowadays, during the realization of an oscillating structure having in it a trolley with a linear movement along the oscillating plane, the problem has arisen of making this trolley slow down in a graduated way until it stops and subsequently and at the same time be fast in restarting in the other direction, once the plane is tilted again.
Per risolvere questo problema si è ipotizzato l’utilizzo di molle contrapposte per poter far rallentare la corsa; con tale soluzione si hanno però degli inconvenienti, in quanto comprimendo la molla si ha una contemporanea brusca ed incontrollata spinta nella direzione opposta del carrello · To solve this problem, the use of opposing springs was assumed to slow down the stroke; however, with this solution there are some drawbacks, since by compressing the spring there is a simultaneous sudden and uncontrolled thrust in the opposite direction of the carriage.
A parziale soluzione di tale inconveniente si è ipotizzato l’impiego di molle a gas contrapposte; anche tale soluzione però presenta degli inconvenienti, dovuti alla constatazione che la velocità del carrello risulta costante su tutta la corsa, risultando al contempo impedita una accelerazione veloce nella direzione opposta. As a partial solution to this drawback, the use of opposing gas springs has been hypothesized; however, this solution also has drawbacks, due to the fact that the speed of the carriage is constant over the entire stroke, while at the same time a fast acceleration in the opposite direction is prevented.
Compito principale di quanto forma oggetto del presente trovato è quindi quello di risolvere i problemi tecnici evidenziati, eliminando gli inconvenienti di cui alla tecnica nota citata e quindi escogitando un trovato che permetta di far rallentare un carrello posto su un piano inclinato oscillante in modo graduato fino a fermarsi e successivamente ed essere al contempo veloce nel ripartire nell'altra direzione, una volta inclinato nuovamente il piano. The main task of the subject matter of the present invention is therefore to solve the technical problems highlighted, eliminating the drawbacks of the cited known art and therefore devising an invention that allows to slow down a trolley placed on an inclined plane oscillating in a graduated manner up to to stop and then and at the same time be quick to start again in the other direction, once the plane has been tilted again.
Nell'ambito del compito sopra esposto, un altro importante scopo del trovato è quello di realizzare un trovato che risulti affidabile e sicuro nell'uso. Within the scope of the above aim, another important object of the invention is to provide an invention which is reliable and safe in use.
Non ultimo scopo è quello di ottenere un trovato strutturalmente semplice, che presenti costi di realizzazione contenuti e sia realizzabile con gli usuali noti impianti. Not least object is to obtain a structurally simple invention which has low manufacturing costs and can be produced with the usual known systems.
Il compito e gli scopi accennati, nonché altri che più chiaramente appariranno in seguito, vengono raggiunti da un rallentatore idraulico a doppio effetto, per la regolazione della movimentazione di un carrello mobile linearmente su di un piano oscillante, che si caratterizza per il fatto di essere costituito da un cilindro a circuito chiuso comprendente una canna avente alle estremità una conformazione conica contrapposta, internamente e scorrevolmente a detta canna essendo associato un corpo, di diametro minore rispetto a quello della canna, presentante una valvola che si chiude automaticamente, in modo tale da diminuire il flusso dell'olio, quando detto carrello scivola lungo il piano e si apre automaticamente, in modo tale da aumentare il flusso dell'olio, quando detto carrello cambia direzione. The aforementioned task and purposes, as well as others that will appear more clearly later, are achieved by a double-acting hydraulic retarder, for the regulation of the movement of a trolley linearly movable on an oscillating plane, which is characterized by the fact that it is consisting of a closed-circuit cylinder comprising a barrel having at the ends an opposed conical conformation, internally and slidingly to said barrel being associated with a body, with a smaller diameter than that of the barrel, having a valve that closes automatically, so as to decrease the oil flow, when said trolley slides along the surface and opens automatically, in such a way as to increase the oil flow, when said trolley changes direction.
Ulteriori caratteristiche e vantaggi del trovato risulteranno maggiormente dalla descrizione dettagliata di una particolare, ma non esclusiva, forma di realizzazione, illustrata a titolo indicativo e non limitativo nelle tavole di disegni allegate, in cui: Further characteristics and advantages of the invention will become clearer from the detailed description of a particular, but not exclusive, embodiment, illustrated by way of non-limiting example in the attached drawings, in which:
la fig. 1 illustra, in una vista operata secondo un piano diametrale, il rallentatore con il copro centrale posto nella posizione centrale a seguito di uno spostamento dello stelo verso destra ed in cui, per rendere graficamente più evidente il funzionamento, si è accentuata la conicità della canna; fig. 1 illustrates, in a view operated according to a diametrical plane, the retarder with the central body placed in the central position following a movement of the stem to the right and in which, to make the operation more graphically evident, the taper of the barrel is accentuated. ;
la fig. 2 illustra, in una vista analoga alla precedente, il rallentatore con il copro centrale posto nella posizione di sinistra; fig. 2 shows, in a view similar to the previous one, the retarder with the central body placed in the left position;
la fig. 3 illustra, in una vista analoga alla precedente, il rallentatore con il copro centrale posto nella posizione di destra. fig. 3 shows, in a view similar to the previous one, the retarder with the central body placed in the right position.
Negli esempi di realizzazione che seguono, singole caratteristiche, riportate in relazione a specifici esempi, potranno in realtà essere intercambiate con altre diverse caratteristiche, esistenti in altri esempi di realizzazione. In the following embodiments, single characteristics, reported in relation to specific examples, can actually be interchanged with other different characteristics, existing in other embodiments.
Inoltre è da notare che tutto quello che nel corso della procedura di ottenimento del brevetto si rivelasse essere già noto, si intende non essere rivendicato ed oggetto di stralcio (disclaimer) dalle rivendicazioni. Furthermore, it should be noted that everything that in the course of the procedure for obtaining the patent turns out to be already known, is intended not to be claimed and the subject of an excerpt (disclaimer) from the claims.
Con riferimento alle figure precedentemente citate, si è indicato con il numero (1) un rallentatore idraulico a doppio effetto, per la regolazione della movimentazione di un carrello (non illustrato) mobile linearmente su di un piano oscillante (non illustrato) . With reference to the aforementioned figures, the number (1) indicates a double-acting hydraulic retarder, for adjusting the movement of a trolley (not shown) movable linearly on an oscillating plane (not shown).
Il rallentatore è costituito da un cilindro (2) a circuito chiuso comprendente una canna (3) le cui estremità (4a,4b) presentano una conformazione conica contrapposta rispetto ad un zona centrale (5). The retarder consists of a closed-circuit cylinder (2) comprising a barrel (3) whose ends (4a, 4b) have a conical shape opposite to a central area (5).
Internamente e scorrevolmente a detta canna (3) è associato un corpo (6), di diametro minore rispetto a quello della canna (3), presentante un elemento centrale (7) di raccordo tra due valvole (8,9) raccordate ciascuna ad uno stelo (10,11) a loro volta fuoriuscenti da una coppia di testate (12,13) solidali alle estremità (4a,4b) della canna (3). A body (6) is associated internally and slidingly with said barrel (3), having a smaller diameter than that of the barrel (3), having a central element (7) for connecting two valves (8,9) each connected to one stem (10,11) in turn protruding from a pair of heads (12,13) integral with the ends (4a, 4b) of the barrel (3).
Ciascuna di dette valvole (8,9) presenta un primo condotto assiale (14a,14b), entro cui scorre una sfera (15a,15b), che comunica, nella direzione di detto elemento centrale (7), con una coppia di<'>secondi condotti (16a, 16b,17a,17b) divergenti verso la superficie laterale interna (18) della canna (3). Each of said valves (8,9) has a first axial duct (14a, 14b), inside which a sphere (15a, 15b) slides, which communicates, in the direction of said central element (7), with a pair of <' > second ducts (16a, 16b, 17a, 17b) diverging towards the internal lateral surface (18) of the barrel (3).
Ciascuna valvola (8,9) presenta inoltre una coppia di terzi condotti (19a,19b,20a,20b) disposti secondo il medesimo asse ed ortogonali rispettivamente a detti primi condotti assiali (14a,14b) ed attigui a detto stelo (10,11). Each valve (8,9) also has a pair of third ducts (19a, 19b, 20a, 20b) arranged along the same axis and orthogonal respectively to said first axial ducts (14a, 14b) and adjacent to said stem (10,11 ).
La conformazione delle valvole (8,9) è tale per cui alternativamente una si chiude automaticamente, spostandosi la sfera (15a) o (15b) nella zona di raccordo tra il primo condotto assiale (14a) o (14b) e la coppia di secondi condotti (16a,16b) o (17a,17b) così da impedirne la messa in comunicazione; viene così ad essere diminuito il flusso dell'olio guando il carrello scivola lungo il piano, come illustrato nelle figure 3 e 4. The conformation of the valves (8,9) is such that alternatively one closes automatically, moving the ball (15a) or (15b) in the connection area between the first axial duct (14a) or (14b) and the couple of seconds conduits (16a, 16b) or (17a, 17b) so as to prevent communication; the oil flow is thus reduced as the carriage slides along the surface, as illustrated in figures 3 and 4.
Contemporaneamente l'altra valvola si apre automaticamente, in modo tale da aumentare il flusso dell'olio, quando detto carrello cambia direzione . At the same time the other valve opens automatically, in such a way as to increase the oil flow, when said carriage changes direction.
Grazie alla doppia conicità della canna (3) si ha che viene a diminuire gradualmente il passaggio dell'olio che passa tra la canna (3) e il corpo (6) dotato di valvola (8,9), fino ad arrivare a fine corsa dello stelo (10,11) lasciando però un piccolo spazio che consente di impedire al corpo (6) dotato di valvola (8,9) di bloccarsi nel cilindro (2), consentendo così una veloce ripartenza nella direzione opposta. Thanks to the double taper of the barrel (3), the passage of oil that passes between the barrel (3) and the body (6) equipped with the valve (8,9) gradually decreases, until it reaches the end of the stroke of the rod (10,11), however, leaving a small space that allows to prevent the body (6) equipped with the valve (8,9) from locking in the cylinder (2), thus allowing a quick restart in the opposite direction.
Si è in pratica constatato come il trovato abbia raggiunto il compito e gli scopi sopra accennati essendosi ottenuto un rallentatore che permette di far rallentare un carrello posto su un piano inclinato oscillante in modo graduato fino a fermarsi e successivamente ed essere al contempo veloce nel ripartire nell'altra direzione, una volta inclinato nuovamente il piano. In practice it has been found that the invention has achieved the above mentioned aim and objects, having obtained a retarder which allows to slow down a trolley placed on an inclined plane oscillating in a graduated way until it stops and subsequently and at the same time is fast in restarting in the other direction, once the plane is tilted again.
Il rallentatore risulta inoltre affidabile e sicuro nell'uso, il medesimo risultando anche strutturalmente semplice e di costi contenuti. The retarder is also reliable and safe in use, the same being also structurally simple and of low cost.
Naturalmente i materiali impiegati nonché le dimensioni costituenti i singoli componenti del trovato potranno essere più pertinenti a seconda delle specifiche esigenze. The materials used, as well as the dimensions that constitute the individual components of the invention, may of course be more pertinent according to specific requirements.
I diversi mezzi per effettuare certe differenti funzioni non dovranno certamente coesistere solo nella forma di realizzazione illustrata, ma potranno essere di per sé presenti in molte forme di realizzazione, anche non illustrate. The different means for carrying out certain different functions will certainly not have to coexist only in the illustrated embodiment, but may be present per se in many embodiments, even those not illustrated.
Le caratteristiche indicate come vantaggiose, opportune o simili, possono anche mancare od essere sostituite da equivalenti. The characteristics indicated as advantageous, convenient or the like may also be missing or be replaced by equivalents.
Naturalmente al rallentatore potranno essere associati dei dispostivi di tipo noto per la compensazione del volume dell'olio a causa dì eventuali variazioni di temperatura. Of course, devices of a known type can be associated with the retarder to compensate for the oil volume due to any temperature variations.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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IT000137A ITTV20110137A1 (en) | 2011-10-11 | 2011-10-11 | HYDRAULIC DOUBLE ACTING SLOW MOTION |
Applications Claiming Priority (1)
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IT000137A ITTV20110137A1 (en) | 2011-10-11 | 2011-10-11 | HYDRAULIC DOUBLE ACTING SLOW MOTION |
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ITTV20110137A1 true ITTV20110137A1 (en) | 2013-04-12 |
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IT000137A ITTV20110137A1 (en) | 2011-10-11 | 2011-10-11 | HYDRAULIC DOUBLE ACTING SLOW MOTION |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2088875A (en) * | 1932-09-13 | 1937-08-03 | Serste Jacques Egide | Hydraulic shock absorber for vehicles and other mechanical applications |
US4048905A (en) * | 1976-03-29 | 1977-09-20 | The Boeing Company | Variable orifice hydraulic snubber |
SU1357621A1 (en) * | 1986-07-14 | 1987-12-07 | Московское станкостроительное производственное объединение "Красный пролетарий" | Double-side action hydraulic shock absorber |
US5074389A (en) * | 1990-01-25 | 1991-12-24 | Bobcat Engineering Corporation | Peripherally valved, temperature-compensated shock absorber |
EP0658466A2 (en) * | 1993-12-14 | 1995-06-21 | Hansen Inc. | Method and apparatus for controlling railway truck hunting and a railway car body supported thereby |
US6691842B1 (en) * | 2003-01-31 | 2004-02-17 | Aling Lai | Shock absorber for a radio control model |
-
2011
- 2011-10-11 IT IT000137A patent/ITTV20110137A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2088875A (en) * | 1932-09-13 | 1937-08-03 | Serste Jacques Egide | Hydraulic shock absorber for vehicles and other mechanical applications |
US4048905A (en) * | 1976-03-29 | 1977-09-20 | The Boeing Company | Variable orifice hydraulic snubber |
SU1357621A1 (en) * | 1986-07-14 | 1987-12-07 | Московское станкостроительное производственное объединение "Красный пролетарий" | Double-side action hydraulic shock absorber |
US5074389A (en) * | 1990-01-25 | 1991-12-24 | Bobcat Engineering Corporation | Peripherally valved, temperature-compensated shock absorber |
EP0658466A2 (en) * | 1993-12-14 | 1995-06-21 | Hansen Inc. | Method and apparatus for controlling railway truck hunting and a railway car body supported thereby |
US6691842B1 (en) * | 2003-01-31 | 2004-02-17 | Aling Lai | Shock absorber for a radio control model |
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