WO2012035448A3 - Regenerative hydraulic pump - Google Patents

Regenerative hydraulic pump Download PDF

Info

Publication number
WO2012035448A3
WO2012035448A3 PCT/IB2011/053319 IB2011053319W WO2012035448A3 WO 2012035448 A3 WO2012035448 A3 WO 2012035448A3 IB 2011053319 W IB2011053319 W IB 2011053319W WO 2012035448 A3 WO2012035448 A3 WO 2012035448A3
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
pump
generator
ram
oil
Prior art date
Application number
PCT/IB2011/053319
Other languages
French (fr)
Other versions
WO2012035448A2 (en
Inventor
Ercio Miguel Nema
Original Assignee
Ercio Miguel Nema
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 Ercio Miguel Nema filed Critical Ercio Miguel Nema
Publication of WO2012035448A2 publication Critical patent/WO2012035448A2/en
Publication of WO2012035448A3 publication Critical patent/WO2012035448A3/en

Links

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
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • 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
    • F15B15/18—Combined units comprising both motor and pump
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12—Fluid oscillators or pulse generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention relates to a regenerative pneumohydraulic pump for reducing the volume of oil in the system compared with hydraulic systems commonly used. The pump is actuated by compressed air which controls and supplies at the same time a hydraulic pressure generator (06), this generator consisting of a pneumatic cylinder provided with a piston having a through-rod constituting a double-acting hydraulic pump which is put automatically into reciprocating movement by the switching of a pneumatic directional valve (07) which is self-controlled by the variations in pressure in the pneumatic chambers (06C, 06D) of the generator (06). The pressurized oil obtained is conveyed towards a hydraulic ram (01) which actuates a payload. The return line of this ram (01) also has an adjustable flow-rate regulating valve (11) for moderating and regulating the speed of movement of the rod of the ram (01) when said rod is driven by the payload, so as to avoid the phenomenon of cavitation in the hydraulic circuit. The generator (06), by way of its regenerative principle, ensures the immediate recirculation of the oil from one hydraulic chamber (06A, 06B) to the other, thereby making it possible to reduce the volume of the oil reservoir (04) to the absolute minimum necessary. On account of its reduced space requirement, the pump can be used advantageously for all sorts of applications in vehicles.
PCT/IB2011/053319 2010-09-13 2011-07-25 Regenerative hydraulic pump WO2012035448A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01465/10 2010-09-13
CH14652010A CH704021A2 (en) 2010-09-13 2010-09-13 Pneumo-regenerative hydraulic device.

Publications (2)

Publication Number Publication Date
WO2012035448A2 WO2012035448A2 (en) 2012-03-22
WO2012035448A3 true WO2012035448A3 (en) 2014-11-13

Family

ID=45832020

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/053319 WO2012035448A2 (en) 2010-09-13 2011-07-25 Regenerative hydraulic pump

Country Status (2)

Country Link
CH (1) CH704021A2 (en)
WO (1) WO2012035448A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR102013024307B1 (en) * 2013-09-23 2022-03-29 Drausuisse Brasil Comércio E Locação De Unidades Hidráulicas Inteligentes S.A. Hydraulic pressure generating unit with pneumatic drive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125926A2 (en) * 1983-05-17 1984-11-21 Telehoist Limited Pneumatic control for hydraulic valve
EP0561366A1 (en) * 1992-03-20 1993-09-22 BPW Bergische Achsen Kommanditgesellschaft Axle lifting device
FR2743047A1 (en) * 1995-12-27 1997-07-04 Renault Vehicules Ind Tipping mechanism for goods vehicle cab
JP2000097162A (en) * 1998-09-22 2000-04-04 Sugiyasu Kogyo Kk Air hydropump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125926A2 (en) * 1983-05-17 1984-11-21 Telehoist Limited Pneumatic control for hydraulic valve
EP0561366A1 (en) * 1992-03-20 1993-09-22 BPW Bergische Achsen Kommanditgesellschaft Axle lifting device
FR2743047A1 (en) * 1995-12-27 1997-07-04 Renault Vehicules Ind Tipping mechanism for goods vehicle cab
JP2000097162A (en) * 1998-09-22 2000-04-04 Sugiyasu Kogyo Kk Air hydropump

Also Published As

Publication number Publication date
WO2012035448A2 (en) 2012-03-22
CH704021A2 (en) 2012-03-30

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