PL81988B1 - - Google Patents

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Publication number
PL81988B1
PL81988B1 PL15562872A PL15562872A PL81988B1 PL 81988 B1 PL81988 B1 PL 81988B1 PL 15562872 A PL15562872 A PL 15562872A PL 15562872 A PL15562872 A PL 15562872A PL 81988 B1 PL81988 B1 PL 81988B1
Authority
PL
Poland
Prior art keywords
valves
cylinders
valve
piston
hydraulic
Prior art date
Application number
PL15562872A
Other languages
Polish (pl)
Original Assignee
Ministerium Verkehrswese
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ministerium Verkehrswese filed Critical Ministerium Verkehrswese
Publication of PL81988B1 publication Critical patent/PL81988B1/pl

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00Subject matter not provided for in other groups of this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/32Directional control characterised by the type of actuation
    • F15B2211/329Directional control characterised by the type of actuation actuated by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/405Flow control characterised by the type of flow control means or valve
    • F15B2211/40576Assemblies of multiple valves
    • F15B2211/40584Assemblies of multiple valves the flow control means arranged in parallel with a check valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/415Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41527Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/47Flow control in one direction only
    • F15B2211/473Flow control in one direction only without restriction in the reverse direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/50Pressure control
    • F15B2211/575Pilot pressure control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/635Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75Control of speed of the output member

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

Uprawniony z patentu: Ministerium fur Verkehrswesen, Berlin (Niemiecka Republika Demokratyczna) Uklad sterujacy urzadzeniem do badan wsporników sprezynujacych dla sprzegów samoczynnych w pojazdach szynowych Przedmiotem wynalazku jest uklad sterujacy urzadzeniem do badan wsporników sprezynujacych dla sprzegów samoczynnych centralnych w pojaz¬ dach szynowych.Znane sa urzadzenia do badan wyzej wymie¬ nionych wsporników ze sterowaniem hydraulicz-" nym, w którym wymagane zmiany obciazen dzia¬ lajacych w osi pionowej regulowane sa pod wzgle¬ dem sily nacisku.Urzadzenia te posiadaja wady, polegajace na tym, ze nie daja one rzeczywistego obrazu zjawisk fizy¬ cznych zachodzacych w pracy wsporników w wa¬ runkach eksploatacyjnych, mozna nimi, mianowicie mierzyc jedynie wartosci obciazen zmiennych w osi pionowej, natomiast pomiar wartosci obcia¬ zen mimoosiowych zmiennych w odniesieniu do osi pionowej wspornika nie jest na tych urzadze¬ niach mozliwy.Celem wynalazku jest dostarczenie takiego ukla¬ du laczeniowego, który by umozliwial badanie wsporników sprzegów samoczynnych w warunkach symulujacych warunki eksploatacyjne a zarazem aby przy mozliwosci sterowania zmianami wiel¬ kosci obciazen, umozliwial takze sterowanie zmia¬ nami pozycji wspornika przed lub/i podczas pro¬ cesu badawczego.Zadanie wynalazku polega na dostarczeniu od¬ powiedniego ukladu laczeniowego dla opisywanego urzadzenia, które przez zastosowanie kombinacji 10 15 20 25 30 zaworów rozrzadczych umozliwiloby dowolone lub zaprogramowane sterowanie badaniami.Zgodnie z wynalazkiem zadanie to rozwiazano w taki sposób, ze cylindry robocze 31, 32, 33, 34, sa uruchamiane superpozycyjnie we wspóldzialaniu zespolowym lub tez moga dzialac niezaleznie od siebie, przy czym wymienione cylindry posiadaja sterowanie wstepne za pomoca medium hydrau¬ licznego podawanego przez pompe zebata i prze¬ plywajacego przez zawór redukcyjny oraz przez elektrycznie sterowane zawory rozrzadu wstepne¬ go, ponadto cylindry, zasilane sa medium roboczym podawanym przez pompe odsrodkowo-tlokowa po¬ przez zawory zwrotne oraz zawory przeplywowe, z tym, ze zawory te wylaczalne sa przez zawory rozrzadu wstepnego. Ta droga uzyskano mozliwosc sterowania hydraulicznego szeregu cylindrów ro¬ boczych, wykonujacych róznorakie funkcje, tak w pracy zsynchronizowanej jak i indywidualnej, zaleznie lub tez niezaleznie od siebie.Wynalazek wyjasniony jest przykladowo na ry¬ sunku, na którym przedstawiono schemat funkcjo¬ nalnego polaczenia poszczególnych organów ukladu.Instalacja sluzaca do obciazania badanych urza¬ dzen zaopatrywana jest w medium hydrauliczne pod cisnieniem ze zródla cisnien hydraulicznych.Silnik elektryczny 1 napedza pompe odsrodkowo- -tlokowa 3 oraz pompe trybikowa 4. Pompa ze¬ bata 4 zasysa plyn roboczy ze zbiornika 2. Stru¬ mien plynu roboczego zostaje natychmiast skiero-81988 3 wany z powrotem do zbiornika 2. Drugi strumien plynu przeplywa przez zawór redukcyjny 7, gdzie uzyskuje cisnienie robocze, po czym zostaje skiero¬ wany do zaworów wstepnego sterowania 14, 16, 18 i 20.Pompa odsrodkowo-tlokowa 3 zasysa plyn ze zbiornika 2. Po wlaczeniu strumienie zostaja po¬ zbawione cisnienia i poprzez zawory zwrotne 5 i 6, nastepnie — przez zawory przepylowe 15, 17, 19 i 21 i dalej filtr powrotny 35 powracaja do zbiornika 2. Przez elektryczne wlaczenie jednego z zaworów rozrzadu wstepnego 14, 16, 18 i 20, poszczególne zawory przeplywowe 15, 17, 19 i 21 sterowane sa hydraulicznie. W ten sposób droga przeplywu dla obu strumieni medium hydraulicznego do cylin¬ drów poboczych 31, 32, 33 i 34 zostaje otwarta.Wzrastajace teraz cisnienie zostaje ustalone w re¬ duktorach 8 i 9 a wielkosc tego cisnienia wskazuja manometry 12 i 13. Zawory sterowania wstepnego 14, 16, 18 i 20 moga byc wlaczane pojedynczo i pa¬ rami zawór 14 z zaworem 20 lub zawór 16 z za¬ worem 18. Przez wlaczenie zaworu sterowania wstepnego 20 zostaje wprowadzony w ruch (prze¬ suw boczny) cylinder roboczy 34. Zawór dlawikowy 22 zapobiega zbyt szybkiemu wysuwaniu sie i wsu¬ waniu trzona tlokowego w cylindrze roboczym 39.Przez wlaczenie zaworów sterowania wstepnego 16 i 18 zostaja uruchomione cylindry robocze 32 i 33 (przesuw pionowy). W tym momencie zawór ste¬ rowania wstepnego 14 nie moze byc uruchomiony.Przy nierównomiernym ustawieniu obu cylindrów roboczych 32 i 33 zawory 16 i 18 moga byc odpo¬ wiednio uruchamiane pojedynczo. Podwójne zawo¬ ry zwrotne 29 i 30 zapobiegaja w czasie prowadze¬ nia badan pomylkowej zamianie polozenia. Zalacze- < nie zaworu sterowania wstepnego 14 umozliwia uruchomienie cylindra roboczego 31 (przesuw po¬ dluzny).W czasie suwu tloka ku wnetrzu cylindra 31 plyn roboczy zostaje przeprowadzony od zaworu 15 25 30 '35 40 poprzez zawór dlawikowy 26 oraz przez zawór 27 do cylindra roboczego 31. Powrotny przeplyw ply¬ nu odbywa sie z cylindra roboczego 31 poprzez za¬ wór zwrotny 23 do zaworu przeplywowego 15. Za¬ wory zwrotne 28 i 25 zapobiegaja innej, niewlasci¬ wej drodze przeplywu. Ten zapobiegawczy srodek jest konieczny albowiem przez kazdorazowy suw tloka w jedna lub druga strone cylindra nastepuje napiecie dwóch sprezyn w aparacie tlumiacym wspornika, który podlega badaniom. Przy odwró¬ ceniu kierunku suwu tloka owe sprezyny wywie¬ raja dodatkowo nacisk na tlok, który juz i tak jest podcisnieniem hydraulicznym. Otóz ten dodat¬ kowy nacisk spowodowalby gwaltowne ruchy tloka o charakterze udarowym. Na skutek dzialania za¬ worów dlawikowych 24 i 26 strumien plynu jest odpowiednio dlawiony, dzieki czemu ruchy tloka staja sie równomierne. PL PLAuthorized by the patent: Ministerium fur Verkehrswesen, Berlin (German Democratic Republic) Control system for testing spring brackets for automatic couplings in rail vehicles. for the tests of the above-mentioned supports with hydraulic control, in which the required changes of loads acting on the vertical axis are regulated in terms of the pressure force. These devices have the disadvantages that they do not give a real picture of the phenomena In terms of operating conditions, they can be used to measure only the values of variable loads on the vertical axis, while the measurement of the values of eccentric loads with respect to the vertical axis of the support is not possible on these devices. the invention is to provide such a charm It would allow the testing of automatic couplings supports in conditions simulating the operating conditions and, at the same time, allowing the control of changes in the magnitude of loads, to also enable control of changes in the position of the support before and / or during the test process. According to the invention, this task is solved in such a way that the working cylinders 31, 32, 33, 34 are actuated by the use of a combination of dormers. superpositional in collective interaction or they can also operate independently of each other, the said cylinders being pre-controlled by a hydraulic medium supplied by the gear pump and flowing through the reduction valve and by electrically controlled primary timing valves, and the cylinders are also fed sa medium the working pump is fed by a centrifugal piston pump through check valves and flow valves, but these valves are disengaged by the primary valve. This way, it was possible to hydraulically control a series of working cylinders, performing various functions, both in synchronized and individual operation, depending or independently of each other. The invention is explained, for example, in the drawing, which shows a diagram of the functional connection of the individual organs. The installation used to load the tested devices is supplied with a hydraulic medium under pressure from a source of hydraulic pressure. Electric motor 1 drives a centrifugal-piston pump 3 and a gear pump 4. Gear pump 4 sucks working fluid from the tank 2. Structure The working fluid is immediately directed back to tank 2. The second fluid flows through pressure reducing valve 7 where it attains operating pressure, and is then directed to pilot valves 14, 16, 18 and 20. centrifugal piston 3 sucks in the liquid from the tank 2. through the check valves 5 and 6, then - through the overflow valves 15, 17, 19 and 21 and then the return filter 35 returns to the tank 2. By electric activation of one of the pre-valve valves 14, 16, 18 and 20, individual flow valves 15, 17, 19 and 21 are controlled hydraulically. The flow path for the two streams of hydraulic fluid to the auxiliary cylinders 31, 32, 33 and 34 is thus opened. The now rising pressure is established in reducers 8 and 9 and the pressure is shown by the pressure gauges 12 and 13. Pre-control valves 14, 16, 18 and 20 can be switched on individually and in pairs, valve 14 with valve 20 or valve 16 with valve 18. By switching on the pilot valve 20, the operating cylinder 34 is set in motion (side shift). The throttle 22 prevents the piston rod in the operating cylinder 39 from advancing and retracting too quickly. By activating the pilot valves 16 and 18, the operating cylinders 32 and 33 (vertical travel) are activated. At this point, the pilot control valve 14 cannot be actuated. If both working cylinders 32 and 33 are unevenly aligned, valves 16 and 18 can be actuated individually, respectively. The double check valves 29 and 30 prevent any misplacement during the tests. The inclusion of the pilot valve 14 enables the operating cylinder 31 to be activated (longitudinal travel). During the piston stroke towards the inside of the cylinder 31, the working fluid is conducted from valve 15 25 30 35 40 through throttle valve 26 and through valve 27 to the cylinder The fluid return flow is from the working cylinder 31 through the check valve 23 to the flow valve 15. The check valves 28 and 25 prevent any other, incorrect flow path. This preventive measure is necessary because each time the piston stroke on one side or the other side of the cylinder, two springs are tensioned in the damping device of the support to be tested. When the direction of the stroke is reversed, the piston springs additionally exert pressure on the piston, which is already a hydraulic depression. Well, this additional pressure would cause the plunger to move rapidly and with an impact type. Due to the action of the throttle valves 24 and 26, the fluid flow is appropriately choked so that the piston movement becomes even. PL PL

Claims (1)

1. Zastrzezenie patentowe Uklad sterujacy urzadzeniem do badan sprezy¬ nujacych wsporników dla sprzegów samoczynnych w pojazdach szynowych, którego dzialanie oparte jest na systemie hydraulicznym, znamienny tym, ze cylindry robocze (31), (32), (33), (34) urucha¬ miane sa na zasadzie wspólzaleznosci o dzialaniu równoczesnym lub niezaleznie od siebie, przy czym wymienione cylindry (31), (32), (33), (34) posiadaja sterowanie wstepne za pomoca medium hydraulicz¬ nego podawanego przez pompe zebata (4) i przeply¬ wajacego przez zawór redukcyjny (7) oraz przez elektrycznie sterowane zawory rozrzadu wstepnego (14), (16), (18), (20), ponadto cylindry (31), (32), (33), (34) zasilane sa hydraulicznie medium roboczym, podawanym przez pompe odsrodkowo-tlokowa (3) poprzez zawory zwrotne (5), (6) z tym, ze zawory te wylaczalne sa przez zawory rozrzadu wstepnego (14), (16), (18), (20). PZG Bydg., zam. 424/76, nakl. 115+20 Cena 10 zl PL PL1. Patent claim The control system of the device for spring testing of supports for automatic couplings in rail vehicles, the operation of which is based on a hydraulic system, characterized in that the operating cylinders (31), (32), (33), (34) are The changes are interdependent with simultaneous or independent operation, the said cylinders (31), (32), (33), (34) having pre-control by means of a hydraulic medium fed by a gear pump (4) and flowing through the reduction valve (7) and through the electrically operated pre-timing valves (14), (16), (18), (20), and the cylinders (31), (32), (33), (34) are hydraulically working medium, fed by a piston-centrifugal pump (3) through check valves (5), (6), with the proviso that these valves are disengaged by the primary timing valves (14), (16), (18), (20 ). PZG Bydgoszcz, residing in 424/76, pp. 115 + 20 Price PLN 10 PL PL
PL15562872A 1971-05-28 1972-05-26 PL81988B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD15542871A DD98593A3 (en) 1971-05-28 1971-05-28

Publications (1)

Publication Number Publication Date
PL81988B1 true PL81988B1 (en) 1975-10-31

Family

ID=5483889

Family Applications (1)

Application Number Title Priority Date Filing Date
PL15562872A PL81988B1 (en) 1971-05-28 1972-05-26

Country Status (6)

Country Link
BG (1) BG19204A3 (en)
CH (1) CH539535A (en)
DD (1) DD98593A3 (en)
DE (1) DE2210583A1 (en)
FR (1) FR2139826B1 (en)
PL (1) PL81988B1 (en)

Also Published As

Publication number Publication date
FR2139826B1 (en) 1973-07-13
DD98593A3 (en) 1973-07-12
DE2210583A1 (en) 1972-12-14
CH539535A (en) 1973-07-31
FR2139826A1 (en) 1973-01-12
BG19204A3 (en) 1975-04-30

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