EP1383702B1 - Verfahren und vorrichtung zur steuerung eines einfach wirkenden druckluftzylinders - Google Patents

Verfahren und vorrichtung zur steuerung eines einfach wirkenden druckluftzylinders Download PDF

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Publication number
EP1383702B1
EP1383702B1 EP02722683A EP02722683A EP1383702B1 EP 1383702 B1 EP1383702 B1 EP 1383702B1 EP 02722683 A EP02722683 A EP 02722683A EP 02722683 A EP02722683 A EP 02722683A EP 1383702 B1 EP1383702 B1 EP 1383702B1
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EP
European Patent Office
Prior art keywords
conduit
discharge
valve
seating
pressurisable chamber
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP02722683A
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English (en)
French (fr)
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EP1383702A1 (de
Inventor
Erio Ferrari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olmec Srl
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Olmec Srl
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Publication date
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Publication of EP1383702A1 publication Critical patent/EP1383702A1/de
Application granted granted Critical
Publication of EP1383702B1 publication Critical patent/EP1383702B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/35—Inflatable flexible elements, e.g. bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1476—Special return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/421—Flow control characterised by the type of actuation mechanically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member

Definitions

  • the invention relates to a process and device for controlling a single-acting pneumatic piston. Specifically, though not exclusively, the invention is applicable to a bellows pneumatic piston used for lifting objects, in particular for raising one side of a motor vehicle.
  • the main aim of the present invention is to provide a process for controlling a single-acting pneumatic piston which overcomes the above-described drawback.
  • An advantage of the invention is that it provides a process which with a simple command fully and rapidly evacuates the pressurisable chamber of the pneumatic piston.
  • a further advantage of the process is that it is simple and economical to realise.
  • a further aim of the invention is to provide a control device for actuating the process of the invention which is relatively small, reliable, practical and safe.
  • a pneumatic jack for raising objects comprising a single-acting pneumatic piston 2 comprising a bellows 3 made of a deformable material which delimits internally thereof a pressurisable chamber 4 which can be placed in connection with an external source of pressurised gas (for example, a compressed-air plant).
  • An upper end of the bellows 3 is predisposed using known ways for raising an object, in particular for lifting a side of a motor vehicle in a workshop.
  • the jack 1 is provided with a handle 5 bearing a control device 6 for the single-acting pneumatic piston, which is actuated, preferably manually, by an operator.
  • the control device 6 operates between the pressurised gas source and the pressurisable chamber 4.
  • the control device 6 comprises a normally closed two-way delivery valve 7 which on command places the external pressurised-gas source in communication with the pressurisable chamber 4 of the piston.
  • a normally-closed two-way discharge valve 8 places the pressurisable chamber 4 in communication with a discharge 9.
  • An auxiliary discharge conduit 10 has an intake zone 11 which on command can be connected to the pressurisable chamber 4.
  • a venturi depression can be induced in the auxiliary discharge conduit 10.
  • a normally-closed two-way total discharge valve 12 is predisposed on the auxiliary discharge conduit 10 between the gas source and the intake zone 11.
  • the delivery valve 7, the discharge valve 8 and the total discharge valve 12 are associated to a valve group comprising a valve body 14 in a single block, as shown in the figure, or can be assembled on different blocks which can then be assembled together and interfaced.
  • the valve block 14 comprises: an inlet mouth 15 for pressurised air which is connectable to a compressed-air plant; a first cavity 16 opening into a delivery mouth 17 for connecting to the pressurised chamber 4 of the piston; a second cavity 18 opening into a discharge mouth 19 on which a discharge silencer 27 operates; a first seating 20 for the delivery valve 7 and a second seating 21 for the discharge valve 8; and a third seating 22 for the total discharge valve 12.
  • connection conduits are afforded inside the valve body 14: a first conduit 23 which inter-connects the first seating 20, the first cavity 16, the second seating 21 and the second cavity 18; a second conduit 24 which inter-connects the inlet mouth 15, the first seating 20 and the first cavity 16; a third conduit 25 which interconnects the first seating 20 and the third seating 22; and a fourth conduit 26 which interconnects the third seating 22 and the second cavity 18.
  • the third conduit 25 and the fourth conduit 26 are staggered with respect to the first conduit 23 an the second conduit 24.
  • a transversal conduit 30 connects the third conduit 25 with the third seating 22.
  • a transversal conduit 30 connects the fourth conduit 26 with the third seating 22.
  • a transversal conduit 31 connects the fourth conduit 26 with the second cavity 18.
  • the fourth conduit 26 is obliquely located.
  • a transversal conduit 32 connects the third conduit 25 with the first seating 20.
  • the second cavity 18 houses a venturi device, of known type and not illustrated., which is predisposed to induce a venturi effect in the intake zone 11.
  • the delivery valve 7, discharge valve 8 and total discharge valve 12 are normal two-position two-way intercept valves, which are manually opened by means of a push-button, and which automatically close by means of a return spring when no thrust is present.
  • the delivery valve 7 in the closed and open positions respectively opens and closes the first conduit 23 and the second conduit 24.
  • the discharge valve 8 in the closed and open positions respectively closes and opens the first conduit 23.
  • the total discharge valve 12 in the closed and open positions respectively closes and opens a connection between the third conduit 25 and the fourth conduit 26.
  • control device 6 activates a process for controlling the single-acting pneumatic piston 2, in which process the pressurisable chamber 4 of the piston is cyclically subjected to a delivery stage, during which the piston 2 raises an object, in which stage the chamber 4 receives a pressurised gas coming from a source thereof, and a discharge stage, in which the pressurised gas is evacuated from the chamber 4 and the object is lowered under the pressure of its own weight.
  • venturi effect is obtained by means of a gas flow generated by effect of an opening of the total discharge valve 12, thus placing the auxiliary discharge conduit 10 in communication with the source of pressurised gas.
  • the pressurised gas generates a flow through the conduit 10 and, in particular, through the venturi device predisposed in the intake zone 11 in order to activate the suction.
  • the intake zone 11 is placed in communication with the pressurisable chamber 4 through the discharge valve 8, which is left open for the purpose.
  • the operator For using the jack, the operator first positions the jack below the object to be raised, then he activates the lifting operation by pressing the button of the delivery valve 7.
  • the compressed air passes through the valve body 14 and is forced into the pressurisable chamber 4; in particular it passes through the inlet mouth 15, the delivery valve 7 housed in the first seating 20, the second conduit 24 and the delivery mouth 17.
  • the delivery valve 7 returns into the closed position, stopping the piston 2 from rising while maintaining the pressure in the chamber 4.
  • the operator When the piston 2 is to be lowered, the operator first presses the control button of the discharge valve 8, the chamber 4 is placed in communication with the discharge 9; thus the piston 2 partially descends, facilitated by the downwards action of the weight of the raised object.
  • the operator contemporaneously presses the discharge valve 8 and the total discharge valve 12; in this configuration the intake zone 11 is activated and communicates with the chamber 4, a suction action is begun of air from the chamber 4, causing the piston 2 to be completely lowered.
  • the control button of the discharge valve 8 is released, the piston 2 stays in the completely lowered position and is ready for the next work cycle. Pressing only the total discharge valve 12 button does not in any way affect the position of the piston 2.
  • a further embodiment of the invention could combine the functions of the discharge valve and the total discharge valves, by providing a single two-position four-way valve, with a return spring.
  • the four ways are equivalent to the two valves 9 and 12 in the illustrated embodiment, associated two by two and arranged along the discharge conduit and the total discharge conduit.
  • a first position is the closure position, a second position a position of opening of the discharge conduit and the auxiliary discharge conduit.
  • the button activating the descent of the piston 2 at the same time also activates the venturi effect suction.
  • a still further embodiment might include a four-way valve (as in the above-described further embodiment) but with three positions, i.e. a first position in which the discharge conduit and the auxiliary discharge conduit are closed, a second position in which only the discharge conduit is open and a third position in which both the discharge conduit and the auxiliary discharge conduit are open.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Transplanting Machines (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fluid-Driven Valves (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Claims (11)

  1. Verfahren zur Steuerung eines einfach wirkenden Druckluftzylinders (2), in welchem eine unter Druckkammer (4) des Zylinders (2) zyklisch einer Druckphase unterzogen wird, zugeordnet insbesondere dem Anheben eines Gegenstandes, während welcher die Druckkammer (4) ein unter Druck stehendes, von einer Druckgasquelle kommendes Gas aufnimmt, und einer Ablassphase, zugeordnet insbesondere dem Absenken des Gegenstandes, während welcher das unter Druck stehende Gas aus der Druckkammer (4) abgelassen wird, dadurch gekennzeichnet, dass während der Ablassphase das Gas aus der Druckkammer (4) mit Hilfe eines Venturi-Effektes abgelassen wird.
  2. Verfahren nach Patentanspruch 1, bei welchem der Venturi-Effekt mit Hilfe eines Gasstromes erhalten wird, erzeugt durch das Öffnen einer Hilfsablassleitung (10), welche an die Druckgasquelle angeschlossen ist, und welche während der Ablassphase mit der Druckkammer (4) in Verbindung gebracht wird.
  3. Vorrichtung zur Steuerung eines einfach wirkenden Druckluftzylinders (2), enthaltend:
    - ein normalerweise geschlossenes Zweiwege-Druckventil (7), welches auf einen Befehl hin eine Druckgasquelle mit einer Druckkammer (4) des Zylinders in Verbindung setzt, insbesondere zum Anheben eines Gegenstandes;
    - ein normalerweise geschlossenes Zweiwege-Ablassventil (8), welches auf einen Befehl hin die Druckkammer (4) mit einem Ablass (9) in Verbindung setzt, insbesondere zum Absenken eines Gegenstandes;
    dadurch gekennzeichnet, dass sie eine Hilfsablassleitung (10) mit einem Ansaugbereich (11) enthält, auf einen Befehl hin mit der Druckkammer (4) verbindbar, und in welcher durch eine Venturi-Vornchtung, die in dem genannten Ansaugbereich vorgesehen ist, ein Unterdruck erzeugt werden kann.
  4. Vorrichtung nach Patentanspruch 3, enthaltend ein normalerweise geschlossenes Zweiwege-Totalablassventil (12), welches an der Hilfsablassleitung (10) zwischen der Druckgasquelle und dem Ansaugbereich (11) angeordnet ist.
  5. Vorrichtung nach Patentanspruch 3 oder 4, enthaltend eine Ablassleitung.(13), an welcher das Ablassventil (8) arbeitet, welche Ablassleitung (13) an einem Ende mit der Druckkammer (4) verbunden ist und an dem anderen Ende mit dem Ansaugbereich (11).
  6. Vorrichtung nach einem beliebigen der Patentansprüche von 3 bis 5, bei welcher das Druckventil (7), das Ablassventil (8) und das Totalablassventil (12) in eine Ventilgruppe eingegliedert sind, enthaltend einen Ventilkörper (14), welcher wie folgt aufweist: eine Einlassöffnung (15) für die Druckluft; einen ersten Hohlraum (16), der in einer Förderöffnung (17) zum Anschluss an die Druckkammer (4) des Zylinders (2) endet; einen zweiten Hohlraum (18), der in einer Ablassöffnung (19) endet; einen ersten Sitz (20) für das Druckventil (7); einen zweiten Sitz (21) für das Ablassventil (8); einen dritten Sitz für das Totalablassventil (12; und eine Anzahl von Verbindungsleitungen, enthaltend: eine erste Leitung (23), welche den ersten Sitz (20), den ersten Hohlraum (16), den zweiten Sitz (21) und den zweiten Hohlraum (18) miteinander verbindet; eine zweite Leitung (24), welche die Einlassöffnung (15), den ersten Sitz (20) und den ersten Hohlraum (16) mit der Förderöffnung (17) miteinander verbindet; eine dritte Leitung (25), welche die Einlassöffnung (15), der ersten Sitz (20) und den dritten Sitz (22) miteinander verbindet; eine vierte Leitung (26), welche den dritten Sitz (22) und den zweiten Hohlraum (18) miteinander verbindet.
  7. Vorrichtung nach Patentanspruch 6, bei welcher: das Druckventil (7) in den geschlossenen und geöffneten Positionen jeweils die zweite Leitung (24) schliesst und öffnet; das Ablassventil (9) in den geschlossenen und geöffneten Positionen jeweils die erste Leitung (23) schliesst und öffnet; das Totalablassventil (12) in den geschlossenen und geöffneten Positionen jeweils die Verbindung zwischen der dritten Leitung (25) und der vierten Leitung (26) schliesst und öffnet.
  8. Vorrichtung nach Patentanspruch 6 oder 7, bei welcher die dritte Leitung (25) und die vierte Leitung (26) im Verhältnis zu der ersten Leitung (23) und zu der zweiten Leitung (24) versetzt angeordnet sind.
  9. Vorrichtung nach einem beliebigen der Patentansprüche von 6 bis 8, bei welcher der Ansaugbereich (11) in dem zweiten Hohlraum (18) angeordnet ist.
  10. Vorrichtung nach einem beliebigen der Patentansprüche von 6 bis 9, bei welcher der erste Hohlraum (16) ein Sitz für ein Sicherheitsventil (28) ist.
  11. Druckluftwinde zum Anheben von Gegenständen, enthaltend einen Balg (3) aus verformbarem Material, welcher im Inneren eine Druckkammer (4) eingrenzt, angeschlossen an eine Druckgasquelle, wobei ein oberes Ende des Balgs (3) betrieblich einem anzuhebenden Gegenstand zuzuordnen ist, dadurch gekennzeichnet, dass die Winde eine Vorrichtung (6) nach einem jeden der Patentansprüche von 3 bis 10 enthält, die zwischen der Druckgasquelle und der Druckkammer (4) arbeitet.
EP02722683A 2001-05-04 2002-03-26 Verfahren und vorrichtung zur steuerung eines einfach wirkenden druckluftzylinders Expired - Lifetime EP1383702B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2001MO000082A ITMO20010082A1 (it) 2001-05-04 2001-05-04 Metodo e dispositivo per il controllo di un attuatore pneumatico a semplice effetto
ITMO20010082 2001-05-04
PCT/IT2002/000195 WO2002090236A1 (en) 2001-05-04 2002-03-26 A process and device for controlling a single-acting pneumatic piston

Publications (2)

Publication Number Publication Date
EP1383702A1 EP1383702A1 (de) 2004-01-28
EP1383702B1 true EP1383702B1 (de) 2006-05-31

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EP02722683A Expired - Lifetime EP1383702B1 (de) 2001-05-04 2002-03-26 Verfahren und vorrichtung zur steuerung eines einfach wirkenden druckluftzylinders

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Country Link
EP (1) EP1383702B1 (de)
AT (1) ATE327962T1 (de)
DE (1) DE60211882D1 (de)
IT (1) ITMO20010082A1 (de)
WO (1) WO2002090236A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4361083A1 (de) * 2022-10-24 2024-05-01 Herkules Hebetechnik GmbH Luftbalgvorrichtung für einen fahrzeughubrahmen und fahrzeughubrahmen mit einer luftbalgvorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111334976B (zh) * 2018-11-30 2022-12-09 合肥海尔洗衣机有限公司 一种带有储物功能的洗衣机
CN111254659B (zh) * 2018-11-30 2023-03-28 青岛海尔洗衣机有限公司 一种洗衣机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584836A (en) * 1969-07-17 1971-06-15 Lear Siegler Inc Portable force applicator
US6082708A (en) * 1997-09-23 2000-07-04 Msms Equities, L.L.C. Pneumatic jack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4361083A1 (de) * 2022-10-24 2024-05-01 Herkules Hebetechnik GmbH Luftbalgvorrichtung für einen fahrzeughubrahmen und fahrzeughubrahmen mit einer luftbalgvorrichtung

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Publication number Publication date
ITMO20010082A0 (it) 2001-05-04
WO2002090236A1 (en) 2002-11-14
EP1383702A1 (de) 2004-01-28
ATE327962T1 (de) 2006-06-15
DE60211882D1 (de) 2006-07-06
ITMO20010082A1 (it) 2002-11-04

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