EP0972946A1 - Pneumatisch-hydraulischer Kraftübersetzer - Google Patents

Pneumatisch-hydraulischer Kraftübersetzer Download PDF

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Publication number
EP0972946A1
EP0972946A1 EP98500163A EP98500163A EP0972946A1 EP 0972946 A1 EP0972946 A1 EP 0972946A1 EP 98500163 A EP98500163 A EP 98500163A EP 98500163 A EP98500163 A EP 98500163A EP 0972946 A1 EP0972946 A1 EP 0972946A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
chamber
main
rear 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.)
Withdrawn
Application number
EP98500163A
Other languages
English (en)
French (fr)
Inventor
Javier Berridi De Quevedo
José Rodriguez Granadero
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.)
Fresmak SA
Original Assignee
Fresmak SA
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 Fresmak SA filed Critical Fresmak SA
Priority to EP98500163A priority Critical patent/EP0972946A1/de
Publication of EP0972946A1 publication Critical patent/EP0972946A1/de
Withdrawn legal-status Critical Current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
    • F15B11/02—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
    • 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
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • 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
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/505—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

Definitions

  • This multiplier applicable to any type of mooring operates using pressurized air as the power source.
  • This air pressure by means of a hydraulic multiplying cylinder, is converted in mechanical thrust force.
  • this invention has a stroke automatic advance and return using only pressurized air. So therefore, it is a pneumo-hydraulic force-pressure multiplier which obtains an automatic stroke then a multiplying transformation of the supply air pressure in mechanical push-mooring force.
  • a multiplier is used a very long pneumatic cylinder which is integral with a reservoir hydraulic.
  • the action of the inner piston of the pneumatic cylinder and its stroke is break it down into two phases; the automatic movement of advancement and go back, then multiply action. Which requires a large length of the device.
  • the invention does not need only pressurized air, present on most work center sites, without the need for external devices.
  • the device can be used on any tool of thrust, whether it is mooring parts like the press or the jaws, or for closing or other utilities.
  • the flange (1) has been perforated in a multiform way to allow the conduct of fluids. Some of the exits of said conduits have not function, from where they were closed by plugs (t).
  • the main piston (9) pushes the mechanical plunger (11) which will exert the multiplied force where the user wants it, or the mechanism of which the user will need, for example, by means of a washer (22).
  • the mechanical pusher moves in the chamber anterior (C9) against the action of a spring (10).
  • fluid for example pneumatic and a front chamber (C 4 ) full of oil and in communication (P 4 ) with the rear chamber (C 8 ) of the main cylinder (5 1 ).
  • a third cylinder with a rear chamber (C 6 ) actuated by fluid, for example pneumatic, a third piston (15) coaxial with the main piston (9) and which is introduced during its movement in the cylindrical chamber (C 5 ) of said main piston (9).
  • fluid for example pneumatic
  • the second (5 2 ) and the third cylinder (5 3 ) are presented ( Figure 1) inside a single block or flange (1).
  • the multiplier receives the air supply from the part rear or side of the support flange (1) by the accesses (2) or (3) which communicate with each other, this is also the reason why one of these must always remain closed.
  • the flange (1) is a compact piece pierced to obtain the various chambers of fluids, for example air, oil, water, etc.
  • it has holes (a) which make it possible anchoring with bolts.
  • it has a hole threaded (4) which receives the main tank or main cylinder (5), giving rise to the assembly with double interlocking.
  • the cavity (C 1 ) communicates with the cavity (C 2 ) where there is a second valve assembly (V 2 ).
  • the air then passes through the conduit (P 8 ) to the second valve assembly (V 2 ) placed in the cavity (C 2 ).
  • the one-way valve (13) prevents it from crossing this assembly in the longitudinal direction and advances towards the point (P 1 ) where it divides into two flows; one which continues towards (P 2 ) and another which advances towards (P 3 ).
  • Path P 2 The air which goes to (P 2 ) is introduced into the rear chamber (C 3 ) of the second cylinder ( Figure 1), located under the second piston (7). This causes the piston (7) to advance in a vertical direction against the action of the spring (17). This piston (7) pulses the oil located in the front chamber (C 4 ) through the point (P 4 ) to the cylindrical pressure chamber (C 5 ) of the main cylinder reservoir (5 1 ) The cylindrical chamber (C 5 ) is previously filled with oil. The sealing ring (8) and the piston (15) prevent the oil from escaping by preventing communication between the chambers of the main cylinder (C 5 ) (C 8 ) and the third cylinder (C 7 ).
  • the oil thus displaced from the front chamber (C 4 ) to the cylindrical chamber (C 5 ) increases the volume of oil in the cylindrical chamber (C 5 ) and causes the main piston (9) to advance inside the main cylindrical tank (5), compressing the spring.
  • the piston (9) takes in its movement the mechanical plunger (11). This is responsible for transmitting the pressure.
  • the automatic advance travel of the mechanical plunger is obtained.
  • the air located in the rear chamber (C 6 ) pushes the pneumatic piston (14) forward and the air located in the front chamber (C 7 ) exits into the atmosphere, through a silencer filter located at the outside of the flange (1).
  • the rod (15) passes through the sealing rings (8) (20) by entering the cylindrical chamber (C5).
  • the main piston (9) cannot advance further, since it has already carried out its approach work, with the automatic stroke described above.
  • the introduction of this rod (15) into the main chamber (C 5 ) produces the multiplication of the pressure by application of the elementary law of Pascal hydraulic.
  • the air located in the rear chamber (C 3 ) of the second cylinder (5 2 ) leaves behind and exits through point (P 2 ) at (P 1 ) (figure 2) and advances freely towards the outside, crossing transversely the first and second valve assembly (V 1 ) and (V 2 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP98500163A 1998-07-14 1998-07-14 Pneumatisch-hydraulischer Kraftübersetzer Withdrawn EP0972946A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98500163A EP0972946A1 (de) 1998-07-14 1998-07-14 Pneumatisch-hydraulischer Kraftübersetzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98500163A EP0972946A1 (de) 1998-07-14 1998-07-14 Pneumatisch-hydraulischer Kraftübersetzer

Publications (1)

Publication Number Publication Date
EP0972946A1 true EP0972946A1 (de) 2000-01-19

Family

ID=8235825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98500163A Withdrawn EP0972946A1 (de) 1998-07-14 1998-07-14 Pneumatisch-hydraulischer Kraftübersetzer

Country Status (1)

Country Link
EP (1) EP0972946A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB662397A (en) * 1949-09-28 1951-12-05 Bror Anderson Improvements in or relating to clamping devices
US3426530A (en) * 1966-10-26 1969-02-11 Etablis L Faiveley Oleopneumatic jack with staged structure
DE2001387A1 (de) * 1970-01-14 1971-08-26 Volkswagenwerk Ag Zylinderanordnung zur Krafterzeugung mit einem Arbeits- und einem UEbersetzungszylinder
JPS57179404A (en) * 1981-04-30 1982-11-05 Masabumi Isobe Cylinder device
JPS60260708A (ja) * 1984-06-05 1985-12-23 Masabumi Isobe シリンダ−装置
DE4114965A1 (de) * 1990-05-11 1991-11-14 Mori Seiki Seisakusho Kk Von einer treibpumpe betaetigte hydraulikzylinder-vorrichtung
EP0554760A1 (de) * 1992-02-01 1993-08-11 TOX-PRESSOTECHNIK GmbH Hydropneumatischer Druckübersetzer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB662397A (en) * 1949-09-28 1951-12-05 Bror Anderson Improvements in or relating to clamping devices
US3426530A (en) * 1966-10-26 1969-02-11 Etablis L Faiveley Oleopneumatic jack with staged structure
DE2001387A1 (de) * 1970-01-14 1971-08-26 Volkswagenwerk Ag Zylinderanordnung zur Krafterzeugung mit einem Arbeits- und einem UEbersetzungszylinder
JPS57179404A (en) * 1981-04-30 1982-11-05 Masabumi Isobe Cylinder device
JPS60260708A (ja) * 1984-06-05 1985-12-23 Masabumi Isobe シリンダ−装置
DE4114965A1 (de) * 1990-05-11 1991-11-14 Mori Seiki Seisakusho Kk Von einer treibpumpe betaetigte hydraulikzylinder-vorrichtung
EP0554760A1 (de) * 1992-02-01 1993-08-11 TOX-PRESSOTECHNIK GmbH Hydropneumatischer Druckübersetzer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 025 (M - 190) 2 February 1983 (1983-02-02) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 138 (M - 480) 21 May 1986 (1986-05-21) *

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