CS239598B1

CS239598B1 - Hydrostatic converter with variable geometric volume

Info

Publication number: CS239598B1
Application number: CS841681A
Authority: CS
Inventors: Edward A Gonstanian; Vladimir Galba
Original assignee: Edward A Gonstanian; Vladimir Galba
Priority date: 1984-03-08
Filing date: 1984-03-08
Publication date: 1986-01-16
Also published as: CS168184A1

Description

Vynález sa týká hydrostatického převodníku s premenným geometrickým objemem, v ktorom rieši konštrukčné usporiadanie prvkov, potřebných k dopineniu hlavného vedenia a k obmedzeniu pracovného tlaku prostredníctvom změny geometrického objemu.BACKGROUND OF THE INVENTION The present invention relates to a variable-volume hydrostatic transducer, in which it addresses the structural arrangement of the elements required to refine the main line and to limit the working pressure by changing the geometric volume.

Doposial' u známých riešení sú prvky potřebné k dopineniu hlavného vedenia umiestnené na zadnej čelnej ploché žádného· veka a prvky pre obmedzenie pracovného tlaku prostredníctvom změny geometrického objemu sú zabudované na obvodovej ploché žádného veka. Nevýhodou takýchto riešení je, že ak zadná čelná plocha žádného· veka je obsadená dalším připojeným, agregátem, je umiestnenie prvkov slúžiacich k dopineniu hlavného vedenia a k obmedzeniu tlaku prostredníctvom. změny geometrického objemu na zadné veko uzatvárajňce převodník obťažné a u regulačných prevodníkov malých rozmerov prakticky neuskutočnitelné. Zná> me je tiež riešenie, kde sú uvedené prvky dislokované mimo hydrostatický převodník, s ktorým sú spojené potrubím. V tomto případe sa zvyšujú nároky na zástavbové rozměry ďalších prvkov a potrubia.To date, in the known solutions, the elements necessary for the main line to be doped are located on the rear face of the flat no lid, and the elements for limiting the working pressure by changing the geometric volume are built into the circumferential flat of any lid. The disadvantage of such solutions is that if the rear face of any lid is occupied by another connected aggregate, it is the location of the elements serving to refill the main line and to limit the pressure by means of the. changes in the geometric volume to the rear lid of the encapsulating encoder are difficult and practically impracticable for small encoder converters. There is also a known solution where said elements are displaced outside the hydrostatic transducer to which they are connected by pipeline. In this case, the installation dimensions of additional elements and piping are increasing.

Uvedené nevýhody odstraňuje hydrostatický převodník s premenným geometrickým objemom, pozostávajúci zo skrine, v ktorej je uložený pohonný hriaclei s výkyvnou doskou, na ktorom je umiestnený blok valcov obsahujúci pracovně piesty s klzadlami, a u ktorého sú servovaice pre ovládanie geometrického objemu vytvořené v zadnom veku, na ktorom je spoločná deliaca plocha, na ktorej je upevněný ventilový kryt, pričom zadné veko obsahuje hlavné vedenie vytvořené z prvého a druhého tlakového kanálu, kde na druhý tlakový kanál hlavného vedenia pre jeden směr otáčania pohonného hriadeia .a. jeden směr vychýlenia výkyvné} došky je napojený cez plniaci kanál na prvý servovalec a súčasne cez tlakový ventil na doplňovací obvod hydrostatického prevodníka výstup vysokotlakého ventila podlá vynálezu, ktorého podstata spočívá v tom, že vstup plniaceho ventila vyúsťujúci. v spoločnej deliacej ploché je cez druhý spojovací kanál, priestor a vedenie vytvořené vo ventilovém kryte spojený s doplňovacím obvodom hydrostatického prevodníka. V zadnom veku je na druhý tiskový kanál hlavného vedenia napojený výstup -plniaceho ventila. V alternatívnom převedení je v zadnom veku na prvý tlakový kanál hlavného vedenia napojený výstup plniaceho ventila.These disadvantages are overcome by a variable-volume hydrostatic transducer consisting of a housing in which a drive hriaclei with a pivot plate is mounted, on which a cylinder block containing working pistons with sliders is located, and in which the volume-volume servo controllers are formed at the rear. wherein the back cover comprises a main conduit formed from a first and a second pressure conduit, wherein a second main conduit pressure conduit for one direction of rotation of the drive shaft. one deflection direction of the pivotable thatch is connected through the feed channel to the first servo and at the same time via a pressure valve to the replenishment circuit of the hydrostatic transducer outlet of the high pressure valve according to the invention, characterized in that the feed valve inlet terminates. in the common partition flat, it is connected to the replenishment circuit of the hydrostatic transducer via a second connecting channel, space and conduit formed in the valve housing. In the rear lid, the outlet valve of the filling valve is connected to the second print channel of the main line. In an alternative embodiment, the charge valve outlet is connected in the rear lid to the first pressure passage of the main line.

Pri převedení hydrostatického prevodníka s premenným geometrickým objemom pódia vynálezu je zadné veko konstrukčně rie239598 šitelné v prevedeniach, ked zadná čelná plocha žádného veka je obsadená dalším agregátom, i pre malé rozměry prevodníkov. 0tvory, vrtané na obvodovej ploché žádného veka a ventilový kryt, ktorý ich zaslepuje, zostávajú rovnaké ako u běžných sériových prevodníkov. Uvedená skutočnosť v důsledku unifikácie představuje ďalšie zjednodušenle výroby.When converting a hydrostatic transducer with a variable geometric volume according to the invention, the rear lid is structurally compatible with embodiments when the rear face of any lid is occupied by another unit, even for small transducer dimensions. The holes drilled on the circumferential flat of any lid and the valve cover that blinds them remain the same as conventional serial converters. This is a further simplification of production as a result of the unification.

Přiklad prevedenia hydrostatického prevodníka s premenným geometrickým objemom podl'a vynálezu je na přiložených výkresoch, kde je na obr. 1 schematicky znázorněný pozdížny rez prevodníka, na obr. 2 pohled na zadné veko zo strany deliacej plochy a čiastočný rez servovalcom, na obr. 3 rez C—C ventilovým krytom z obr. 4, na obr.An exemplary embodiment of a variable volume hydrostatic transducer according to the invention is shown in the accompanying drawings, in which: FIG. 1 shows a schematic longitudinal section through a transducer; FIG. 2 shows a view of the rear lid from the side of the partition and a partial section through the servo; FIG. 3 is a cross-sectional view of the valve C-C of FIG. 4, FIG.

rez B—B z obr. 2, na obr. 5 rez A—A z obr, 2 a na obr. Θ rez A—A z obr. 2 pre alternativně prevedenie spojenia tlakového ventila s výstupom plniaceho ventila.section B-B of FIG. 2, FIG. 5 shows section A-A of FIG. 2 and FIG. FIG. 2 for alternatively making the connection of the pressure valve to the outlet of the charge valve.

Hydrostatický převodník s premenným geometrickým objemom pozostáva zo skrine 1, ku ktorej je připojené zadné veko 2 a k zadnej ploché 8 žádného veka 2 je připevněný agregát 4. V skrini 1 je uložený pohonný hriadel' 11 a výkyvná doska 12, po ktorej sa klžu klzadlá 13, spojené s pracovnými piestami 14, vedenými v bloku valcov 15. Na výkyvná došku 12 sú upevněné dva servopiesty 16, z ktorých jeden je uložený v prvom servovalci 17 a druhý v druhom servovalci 18, vytvořených v zadnom veku 2. V zadnom veku 2 je tiež vytvořený prvý tlakový kanál 21 hlavného vedenia 7 a druhý tlakový kanál 22 hlavného vedenia 7. Na druhý tlakový kanál 22 je napojený vysokotlaký ventil 24 a výstup 6 plniaceho ventila 29. V alternativnom převedeni je výstup 6 plniaceho ventila 29 napojený na prvý tlakový kanál 21. Vysokotlaký ventil 24, vstup plniaceho ventila 29 a plniaci kanál 27 vyúsťujú do spoločnej deliacej plochý’ 2$ medzi žádným vekom 2 a ventilovým kťytom 3. Vo ventilovom kryte 3, upevnenom na zadnom veku 2, je umiestnený prvý spojovací kanál 31, druhý spojovací kanál 32, priestor 35 a tlakový ventil 34. Priestor 35 je vedením 36 spojený s doplňovacím obvodom hydrostatického prevodníka.The variable displacement hydrostatic transducer consists of a housing 1 to which the rear lid 2 is attached and the rear flat 8 of no lid 2 is fitted with an aggregate 4. The housing 1 houses a drive shaft 11 and a pivot plate 12 over which the sliders 13 slide. connected to the working pistons 14 guided in the cylinder block 15. Two servo pistons 16, one of which is housed in the first servo 17 and the other in the second servo 18 formed in the rear lid 2, are fastened to the pivoted thatch 12. also a first pressure duct 21 of the main duct 7 and a second pressure duct 22 of the main duct 7 are also formed. The high pressure valve 24 and the outlet 6 of the fill valve 29 are connected to the second pressure duct 22. The high pressure valve 24, the inlet of the fill valve 29, and the fill passage 27 result in a common dividing flat 22 between no age. The valve cover 3, mounted on the rear cover 2, houses the first connection channel 31, the second connection channel 32, the space 35 and the pressure valve 34. The space 35 is connected via a line 36 to the replenishment circuit of the hydrostatic transducer.

Při prevádzke hydrostatického prevodníka sa pri otáčaní pohonného hriadela 11 v směre vyznačeného pohybu v druhom tlakOvons kanáli 22 generuje vysoký tlak. Výkyvná doska 12 je v naznačenej polohe držaná tlá-kom v prvom servovalci 17. Ak tento tlak překročí hodnotu tlaku nastavená vo vysokotlakovom ventile 24, přepustí tento cez prvý spojovací kanál 31 a plniaci kanál 27 do druhého servovalca 18 určité množstvo kvapaliny. Následkom toho sa výkyvná doska 12 přestaví do takej polohy, že sa zmenší velkost dodávaného prietoku až na hodnotu zabezpečujúcu pokles tlaku v druhom tlakovom kanáli 22 pod hodnotu nastavenu na vysokotlakom ventile 24, ktorý sa užasvvrie. V čase prestavovania výkyvnej došky 12 je hodnota tlaku v druhom servovalci 18> určená nastavením tlakového ventila 34, ktorý časť prebytočnej kvapaliny, potrebnej k prestaveniu výkyvnej došky 12 a prepúšfanej druhým tlakovým kanálom 22 vracia spať cez priestor 35 do doplňovacieho obvodu hydrostatického prevodníka. V případe doplňovania druhého tlakového kanála 22 prúdi kvapalina z doplňovacieho obvodu hydrostatického prevodníka cez vedenie 36, priestor 35 a druhý spojovací kanál 32 do vstupu 5 plniaceho ventila 29, odkial' potom výstupom 6 plniaceho ventila 29 do druhého tlakového kanála 22. V alternativnom převedení pri potrebe doplňovania prvého tlakového kanála 21 je výstup 6 plniaceho ventila 29 napojený na prvý tlakový kanál 21.In operation of the hydrostatic transducer, high pressure is generated when the drive shaft 11 rotates in the direction indicated by movement in the second pressure through the channel 22. The pivot plate 12 is held in the indicated position by a pressure in the first servo 17. If this pressure exceeds the pressure set in the high pressure valve 24, it passes a certain amount of liquid to the second servo 18 via the first coupling channel 31 and the feed channel 27. As a result, the swivel plate 12 is moved to a position such that the flow rate is reduced to a value that causes the pressure in the second pressure channel 22 to drop below the value set on the high-pressure valve 24 which will close. At the time of adjusting the swinging stack 12, the pressure in the second servo 18 is determined by adjusting the pressure valve 34 which returns the portion of excess liquid required to adjust the swinging stack 12 and pumped through the second pressure channel 22 back through space 35 to the replenishment circuit of the hydrostatic converter. In the case of replenishment of the second pressure port 22, fluid flows from the replenishment circuit of the hydrostatic transducer through line 36, space 35, and second connection port 32 to the inlet 5 of the fill valve 29, then through the outlet 6 of the fill valve 29 to the second pressure port 22. For the purpose of replenishing the first pressure channel 21, the outlet 6 of the filling valve 29 is connected to the first pressure channel 21.

Claims

No. 4,295,998 can be used in embodiments where the rear face of any lid is occupied by another aggravate, even over small dimensions of the transducers. The creatures drilled on the circumferential flat beam and the valve cover that blinds them remain the same as those of conventional series converters. This fact represents a further simplification of production due to the unification. An example of a hydrostatic transducer with variable geometric volume according to the invention is shown in the accompanying drawings, in which a longitudinal section of the transducer is shown schematically in FIG. FIG. 3 is a sectional view of the C-C valve housing of FIG. 4; FIG. 4 is a sectional view along the line B-B of FIG. 2; and FIG. 5 is section A-A of FIG. FIG. 2 illustrates, alternatively, a pressure valve connection with a discharge valve outlet. The variable-volume hydrostatic transducer consists of a housing 1 to which a rear cover 2 is attached and a rearward flat 8 of no cover 2 is an attached assembly 4. In the housing 1 a drive shaft is mounted! 11 and the pivot plate 12, after which the sliders 13 are coupled to the working pistons 14 guided in the cylinder block 15. Two serposed paths 16, one of which is housed in the first servo 17, are attached to the pivoted peg 12. the second pressure channel 21 of the main conduit 7 and the second pressure conduit 22 of the main conduit 7 are also formed in the rear cap 2. the outlet 6 of the filling valve 29. In an alternative embodiment, the outlet 6 of the filling valve 29 is connected to the first pressure channel 21. The high pressure valve 24, the inlet 5 of the filling valve 29 and the filling channel 27 result in a common dividing flat 2S5 between no lid 2 and the valve 3. In the valve housing 3, which is fastened to the rear of the housing 2, a first connecting channel 31, a second connecting channel 32, an opening 35 and a pressure valve 34 are provided. circuit of the hydrostatic converter. During operation of the hydrostatic transducer, when the drive shaft 11 is rotated in the direction of the indicated movement in the second pressure, the channel 22 generates high pressure. In the indicated position, the sleeve 12 is held in the first servo 17 by the die. If this pressure exceeds the pressure value set in the high pressure valve 24, this first connecting channel 31 and the feed channel 27 will pass a certain amount of liquid to the second servo 18. As a result, the swivel plate 12 is moved to a position such that the flow rate is reduced to a value that ensures a pressure drop in the second pressure channel 22 below the value set by the high pressure valve 24 that is closed. At the time of adjusting the pivoted peg 12, the pressure in the second servo 18 is determined by adjusting the pressure valve 34, which part of the excess liquid required to move the pivoted dowel 12 and passed through the second pressure channel 22, through the space 35 to the hydrostatic transducer circuit. . In the case of filling the second pressure channel 22, the fluid from the make-up circuit of the hydrostatic converter flows through the line 3B, the space 35 and the second connecting channel 32 to the inlet 5 of the filling valve 29, cf. then the outlet 6 of the filling valve 29 into the second pressure channel 22. In an alternative transfer with the need to refill the first pressure channel 21, the outlet 6 of the filling valve 29 is connected to the first pressure channel 21.

A variable geometry hydrostatic transducer comprising a housing in which a drive shaft with a pivot plate is disposed, on which a cylinder block is provided comprising working pistons with glides and for which the change in the geometric volume formed at the rear lid, on which is a common dividing surface on which a valve cover is mounted, the rear cover mainly comprising a conduit formed from a first pressure channel and a second pressure channel, wherein a second main conduit pressure channel for one direction of rotation of the drive shaft and one deflection direction of the pivot is connected via the feed channel to the first valve and simultaneously through the pressure valve the hydrostatic transmission refill circuit of the invention highlights the outlet of the high pressure valve, characterized in that the inlet (5) of the filling valve (29) results in the common dividing flat (25) is through the second connecting channel (32) a space ( 35) and a conduit (36) formed in the valve housing (3) connected to the refill circuit of the hydrostatic converter.

2. A hydrostatic transducer according to claim 1, wherein an outlet (6) of the filling valve (29) is connected to the second pressure channel (22) of the main guide (7) in the rear cover (2).

3. A hydrostatic transducer according to claim 1, wherein an outlet (6) of the filling valve (29) is connected to the first pressure channel (21) of the main guide (7) at the rear cover (2).

4 sheets of drawings