EP0164334A1 - Cylindre hydraulique à multiplication d'effort - Google Patents

Cylindre hydraulique à multiplication d'effort Download PDF

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Publication number
EP0164334A1
EP0164334A1 EP85890103A EP85890103A EP0164334A1 EP 0164334 A1 EP0164334 A1 EP 0164334A1 EP 85890103 A EP85890103 A EP 85890103A EP 85890103 A EP85890103 A EP 85890103A EP 0164334 A1 EP0164334 A1 EP 0164334A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder
pistons
chamber
shut
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.)
Granted
Application number
EP85890103A
Other languages
German (de)
English (en)
Other versions
EP0164334B1 (fr
Inventor
Dionizy Simson
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.)
Cessione hoerbiger Ventilwerke AG
Original Assignee
ENFO Grundlagen Forschungs AG
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 ENFO Grundlagen Forschungs AG filed Critical ENFO Grundlagen Forschungs AG
Priority to AT85890103T priority Critical patent/ATE36038T1/de
Publication of EP0164334A1 publication Critical patent/EP0164334A1/fr
Application granted granted Critical
Publication of EP0164334B1 publication Critical patent/EP0164334B1/fr
Expired 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/161—Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
    • 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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/214—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being hydrotransformers
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-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
    • F15B2211/405—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
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/70—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
    • F15B2211/7053—Double-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
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Definitions

  • the present invention relates to a hydraulic cylinder internal pressure transmission for force multiplication.
  • Hydraulic cylinders are needed in many places where a fast stroke with little force and then a short, slow stroke with great force are important. Hydraulic cylinders with hydraulic transmission are used in fixture construction, manufacturing machines and presses, in civil engineering for piling and pulling devices. Such cylinders are more compact and lighter than single-stage hydraulic cylinders with the same effective force.
  • the object of the present invention is to eliminate these disadvantages. This is achieved according to the invention by the features of the characterizing part of independent claim "I.
  • a single-stage primary piston 2 and a two-stage secondary piston 3 are arranged in the cylinder 1, a piston rod 4 connected to the primary piston 2 passing through the secondary piston 3.
  • the primary piston 2 has a circumferential groove 5 with a sealing ring 6 provided therein.
  • the secondary piston comprises the parts 7 and 8 which form the two stages and which have a different diameter from one another.
  • a circumferential groove 9 and 10 with seals 11 and 12 provided therein are provided in part 7 and in part 8.
  • a circumferential groove 14 with a seal 15 provided therein is also provided in the bore 13 provided in part 8 of the secondary piston 3 for the passage of the piston rod.
  • the cylinder 1 is closed on the side of the secondary piston 3 by a cylinder cover 16, through which the piston rod 4 is guided.
  • a circumferential groove 18 is provided with a seal 19 attached therein.
  • a first shut-off piston 22 acted upon by a first, weak spring 21 and a second shut-off piston 24 acted upon by a second strong spring 23.
  • Both the first and the second shut-off piston are designed in two stages, each with a part 25 or. 26 with a larger diameter and a part 27 respectively. 28 are provided with a smaller diameter. With parts 27 and 28 with a smaller diameter is a piston rod 29, respectively. 30 connected, each in a chamber 31 opposite the shut-off piston. 32 lead.
  • Opening pistons 33 and 34 are provided in the chambers 31 and 32.
  • a supply line 35 for the pressure medium leads into the chamber 31 in the area between the piston rod 29 and the end face of the opening piston 33, the two chambers 31 and 32 being connected by a line 36.
  • the chamber 37 surrounding the front part 27 of the first shut-off piston 22 is connected via a line 38 to a first pressure chamber 39 between the primary piston and the cylinder wall. From the line 38 leads a branch line 40 into a step chamber 41 between the part 7 of the secondary piston 3 and the inner wall of the cylinder 1. This step chamber 41 is laterally by a shoulder 42 on the outer circumference of the secondary piston 3 and by a shoulder 43 on the inner wall of the Cylinder 1 limited.
  • the chamber surrounding the front part 28 of the second shut-off piston 24 is connected via a line 44 for the pressure medium to a second pressure chamber 45 between the boundary surface 46 of the secondary piston opposite the cylinder cover and the cylinder cover.
  • the chamber 47 between the primary and secondary pistons is connected via a line 48 to the chambers on the right-hand side of the opening pistons 33 and 34 according to the FIG.
  • the pressure medium is conveyed from the unpressurized chamber 47 via the line 48 into a container (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Servomotors (AREA)
  • Vehicle Body Suspensions (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)
EP85890103A 1984-05-11 1985-05-03 Cylindre hydraulique à multiplication d'effort Expired EP0164334B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85890103T ATE36038T1 (de) 1984-05-11 1985-05-03 Hydraulischer zylinder mit kraftmultiplikation.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2357/84 1984-05-11
CH2357/84A CH665007A5 (de) 1984-05-11 1984-05-11 Hydraulischer zylinder mit kraftmultiplikation.

Publications (2)

Publication Number Publication Date
EP0164334A1 true EP0164334A1 (fr) 1985-12-11
EP0164334B1 EP0164334B1 (fr) 1988-07-27

Family

ID=4231904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890103A Expired EP0164334B1 (fr) 1984-05-11 1985-05-03 Cylindre hydraulique à multiplication d'effort

Country Status (7)

Country Link
US (1) US4620419A (fr)
EP (1) EP0164334B1 (fr)
JP (1) JPS6136505A (fr)
AT (1) ATE36038T1 (fr)
CH (1) CH665007A5 (fr)
DE (1) DE3564010D1 (fr)
ZA (1) ZA853539B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620876A1 (de) * 1986-06-21 1987-12-23 Hehl Karl Hydraulikelement und damit aufgebautes ziehwerkzeug
EP0367143A3 (fr) * 1988-10-31 1991-05-02 Toshiba Kikai Kabushiki Kaisha Système de cylindre de fermeture
EP0442842A1 (fr) * 1990-02-14 1991-08-21 Dionizy Simson Vérin hydraulique avec multiplicateur de pression
US5188014A (en) * 1990-02-14 1993-02-23 Dionizy Simson Hydraulic cylinder with pressure transmission
DE4128389A1 (de) * 1991-08-27 1993-03-04 Grau Gmbh Doppelt wirkender betaetigungszylinder

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841846A (en) * 1986-02-24 1989-06-27 Grambling William D Pneumatic actuators with liquid seals for oil and gas well swabs
US5062268A (en) * 1990-02-02 1991-11-05 The University Of British Columbia Fluid actuator
JP2623075B2 (ja) * 1995-02-03 1997-06-25 悦男 安藤 流体シリンダ
DE10306128A1 (de) * 2003-02-14 2004-08-26 Richard Voß Grubenausbau GmbH Verfahren und Vorrichtung zur Druckerhöhung in Zylindern, insbesondere hydraulischen Stempeln
DE102012007681B4 (de) * 2012-04-17 2016-01-21 Festo Ag & Co. Kg Fluidbetätigter Linearantrieb
JP5939950B2 (ja) * 2012-10-01 2016-06-22 株式会社コスメック 倍力機構付きシリンダ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903852A1 (de) * 1969-01-27 1970-08-13 Glas Michael Maurus Kraftzylindereinheit mit Druckuebersetzung
DE1964076A1 (de) * 1969-12-22 1971-06-24 Rexroth Gmbh G L Arbeitszylinder mit Eilgangkolben

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US615912A (en) * 1898-12-13 Steam-engine
DE1176066B (de) * 1960-01-20 1964-08-13 Demag Ag Druckmittelbetaetigter Rammhammer
US3186173A (en) * 1960-09-15 1965-06-01 American Mach & Foundry Variable pressure hydraulic system
JPS4110721Y1 (fr) * 1965-06-14 1966-05-20
US3473328A (en) * 1967-11-01 1969-10-21 Jergens Tool Specialty Co Pressure multiplying booster
US4011724A (en) * 1971-09-16 1977-03-15 Lockheed Aircraft Corporation Dual force actuator
FR2179572B1 (fr) * 1972-04-12 1976-04-30 Jarret Jean
JPS5144078U (fr) * 1974-09-30 1976-04-01
FR2394386A1 (fr) * 1977-01-27 1979-01-12 Somifra Procede et dispositif automatique d'alimentation en matiere telle qu'un elastomere pour machine a injecter
GB1600733A (en) * 1978-02-27 1981-10-21 Midgley A C Coining presses
US4288987A (en) * 1978-11-11 1981-09-15 Eugen Rapp Pneumo-hydraulic booster with rapid-traverse feature
JPS55142101A (en) * 1979-04-23 1980-11-06 Masuo Shiaku Output booster for gas reciprocating expansion cylinder
CA1132441A (fr) * 1980-05-22 1982-09-28 Gerard G.F. Smeets Systemes intensificateurs de pression

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903852A1 (de) * 1969-01-27 1970-08-13 Glas Michael Maurus Kraftzylindereinheit mit Druckuebersetzung
DE1964076A1 (de) * 1969-12-22 1971-06-24 Rexroth Gmbh G L Arbeitszylinder mit Eilgangkolben

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620876A1 (de) * 1986-06-21 1987-12-23 Hehl Karl Hydraulikelement und damit aufgebautes ziehwerkzeug
EP0367143A3 (fr) * 1988-10-31 1991-05-02 Toshiba Kikai Kabushiki Kaisha Système de cylindre de fermeture
EP0442842A1 (fr) * 1990-02-14 1991-08-21 Dionizy Simson Vérin hydraulique avec multiplicateur de pression
US5188014A (en) * 1990-02-14 1993-02-23 Dionizy Simson Hydraulic cylinder with pressure transmission
DE4128389A1 (de) * 1991-08-27 1993-03-04 Grau Gmbh Doppelt wirkender betaetigungszylinder

Also Published As

Publication number Publication date
US4620419A (en) 1986-11-04
JPS6136505A (ja) 1986-02-21
ZA853539B (en) 1986-01-29
DE3564010D1 (en) 1988-09-01
CH665007A5 (de) 1988-04-15
ATE36038T1 (de) 1988-08-15
EP0164334B1 (fr) 1988-07-27

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