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EP0838589A3 - Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit - Google Patents

Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit Download PDF

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Publication number
EP0838589A3
EP0838589A3 EP98100084A EP98100084A EP0838589A3 EP 0838589 A3 EP0838589 A3 EP 0838589A3 EP 98100084 A EP98100084 A EP 98100084A EP 98100084 A EP98100084 A EP 98100084A EP 0838589 A3 EP0838589 A3 EP 0838589A3
Authority
EP
European Patent Office
Prior art keywords
circuit
cylinder
compensation
hydraulic drive
piston pump
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Withdrawn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
EP98100084A
Other languages
German (de)
French (fr)
Other versions
EP0838589A2 (en
Inventor
Ernst Egli
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.)
Sika Equipment AG
Original Assignee
Sika Equipment 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 Sika Equipment AG filed Critical Sika Equipment AG
Priority to EP98100084A priority Critical patent/EP0838589A3/en
Publication of EP0838589A2 publication Critical patent/EP0838589A2/en
Publication of EP0838589A3 publication Critical patent/EP0838589A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
    • F04B9/1176—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
    • F04B9/1178—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor the movement in the other direction being obtained by a hydraulic connection between the liquid motor cylinders

Landscapes

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

Abstract

Zwei Kolben/Zylinder-Anordnungen (3a, 3b) werden im wesentlichen synchron betrieben. Die Zylinder werden dabei durch die Kolben (5a, 5b) in zwei Teilzylinder unterteilt. Je Teilzylinder an den Kolben/Zylinder-Anordnungen (3a, 3b) sind miteinander verbunden. Aus einem Druckzylinder (11) wird Hydraulikmedium bei Betrieb der Kolben/Zylinder-Anordnungen bezüglich der erwähnten Verbindung hin und her gepumpt, wobei der Druck im Speicher (11) bei Vorliegen von Leckage an den Anordnungen mit der Zeit abnimmt. Er wird gemessen (24), mit einem Referenzwert verglichen, und falls er unter diesen abfällt, wird der Speicher (11) durch kurzzeitiges Öffnen des Systems wieder auf SOLL-Druck geladen (12, 14).

Figure 00000001
Two piston / cylinder arrangements (3a, 3b) are operated essentially synchronously. The cylinders are divided into two partial cylinders by the pistons (5a, 5b). Each partial cylinder on the piston / cylinder arrangements (3a, 3b) are connected to one another. Hydraulic medium is pumped back and forth from a pressure cylinder (11) during operation of the piston / cylinder arrangements with respect to the connection mentioned, the pressure in the accumulator (11) decreasing over time when there is leakage in the arrangements. It is measured (24), compared with a reference value, and if it falls below this, the memory (11) is reloaded to the SET pressure by briefly opening the system (12, 14).
Figure 00000001
EP98100084A 1998-01-06 1998-01-06 Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit Withdrawn EP0838589A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98100084A EP0838589A3 (en) 1998-01-06 1998-01-06 Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98100084A EP0838589A3 (en) 1998-01-06 1998-01-06 Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit

Publications (2)

Publication Number Publication Date
EP0838589A2 EP0838589A2 (en) 1998-04-29
EP0838589A3 true EP0838589A3 (en) 1998-08-05

Family

ID=8231237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100084A Withdrawn EP0838589A3 (en) 1998-01-06 1998-01-06 Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit

Country Status (1)

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EP (1) EP0838589A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019212631A1 (en) * 2019-08-22 2021-02-25 Putzmeister Engineering Gmbh Method for monitoring the condition of a device and device
DE102020200261A1 (en) * 2020-01-10 2021-07-15 Putzmeister Engineering Gmbh Method for operating a thick matter pump and thick matter pump
DE102023110227A1 (en) 2023-04-21 2024-10-24 Putzmeister Engineering Gmbh Hydraulic drive system for a construction and/or thick matter pump system for conveying construction and/or thick matter, construction and/or thick matter pump system and method for operating a construction and/or thick matter pump system for conveying construction and/or thick matter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1447471A (en) * 1965-06-23 1966-07-29 Laval Turbine Pulsating pump
DE3202096A1 (en) * 1980-08-08 1983-08-04 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Concrete pump with reversing device for piston-side and rod-side actuation of the pump cylinder
WO1986003560A1 (en) * 1984-12-12 1986-06-19 Birdwell J C Mud pump
DE3834678A1 (en) * 1988-10-12 1990-04-19 Putzmeister Maschf METHOD AND DEVICE FOR CORRECTING THE PISTON STROKE IN THE CYLINDERS OF A TWO-CYLINDER FUEL PUMP
EP0562398A1 (en) * 1992-03-21 1993-09-29 Schwing GmbH Pump for viscous material
US5616009A (en) * 1981-10-08 1997-04-01 Birdwell; J. C. Mud pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669462A1 (en) 1995-01-30 1995-08-30 Aliva Aktiengesellschaft Method to adjust the pulse amplitude and concrete pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1447471A (en) * 1965-06-23 1966-07-29 Laval Turbine Pulsating pump
DE3202096A1 (en) * 1980-08-08 1983-08-04 Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen Concrete pump with reversing device for piston-side and rod-side actuation of the pump cylinder
US5616009A (en) * 1981-10-08 1997-04-01 Birdwell; J. C. Mud pump
WO1986003560A1 (en) * 1984-12-12 1986-06-19 Birdwell J C Mud pump
DE3834678A1 (en) * 1988-10-12 1990-04-19 Putzmeister Maschf METHOD AND DEVICE FOR CORRECTING THE PISTON STROKE IN THE CYLINDERS OF A TWO-CYLINDER FUEL PUMP
EP0562398A1 (en) * 1992-03-21 1993-09-29 Schwing GmbH Pump for viscous material

Also Published As

Publication number Publication date
EP0838589A2 (en) 1998-04-29

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