[go: up one dir, main page]

EP1727980B1 - Device and method for controlling a two-cylinder thick matter pump - Google Patents

Device and method for controlling a two-cylinder thick matter pump Download PDF

Info

Publication number
EP1727980B1
EP1727980B1 EP05716191A EP05716191A EP1727980B1 EP 1727980 B1 EP1727980 B1 EP 1727980B1 EP 05716191 A EP05716191 A EP 05716191A EP 05716191 A EP05716191 A EP 05716191A EP 1727980 B1 EP1727980 B1 EP 1727980B1
Authority
EP
European Patent Office
Prior art keywords
stroke
pump
reversing
reversible pump
pressure
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
EP05716191A
Other languages
German (de)
French (fr)
Other versions
EP1727980A1 (en
Inventor
Stefan Höfling
Wilhelm Hofmann
Wolf-Michael Petzold
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister Concrete Pumps GmbH
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 Putzmeister Concrete Pumps GmbH filed Critical Putzmeister Concrete Pumps GmbH
Priority to EP07119583A priority Critical patent/EP1906012B1/en
Publication of EP1727980A1 publication Critical patent/EP1727980A1/en
Application granted granted Critical
Publication of EP1727980B1 publication Critical patent/EP1727980B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • 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
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0233—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers
    • F04B7/0241—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an oscillating movement
    • 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
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/09—Motor parameters of linear hydraulic motors
    • F04B2203/0903—Position of the driving piston
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Definitions

  • the invention relates to an apparatus and a method for controlling a two-cylinder slurry pump with two opening on the front side openings in a material feed container, by means of at least one hydraulic reversing and controlled by these hydraulic drive cylinder push-pull delivery cylinders, arranged with an arranged within the material feed container, the inlet side alternately connect the openings of the delivery cylinder and the other opening releasing and outlet side connected to a delivery line, hydraulically actuated diverter, each at the end of a delivery stroke a Um tenuvorgang the diverter is triggered, further wherein the drive cylinder at one end to form a closed hydraulic circuit with each a connection of the reversing pump and at its other end via a swing oil pipe are hydraulically connected to each other and wherein to Umsteue tion of the diverter oil pressure oil is diverted from the leading from the reversing pump to the drive cylinders hydraulic lines.
  • the present invention seeks to develop a device and a method, which even without the usual today cylinder switch sensors reliable pump operation can be ensured with continuous concrete flow.
  • the solution according to the invention is based above all on the knowledge that, with the inclusion of a computer control, additional operating data can be evaluated from the hydraulic circuit for controlling the reversing pump and the pipe switch.
  • the solution according to the invention consists essentially in that the reversing device has a computer-aided arrangement for determining the anticipated stroke duration and its registration in a data memory and for monitoring the time during each piston stroke and for initiating a diverter pipe reversal and reverse flow of the reversing pump in accordance with a defined, compared to estimated lift time has elapsed stroke time.
  • the reversing device preferably has a time monitoring routine which has an algorithm for determining a comparison value from the stroke time and the anticipated stroke duration and for converting it when a predetermined value in a reversing signal for the diverter switch and / or the reversing pump is exceeded.
  • an advantageous embodiment of the invention provides that the reversing device has an input routine for storing the measured during a calibration of the concrete pump at least one defined flow rate stroke duration. Since the flow rate can be varied in computer-aided concrete pumps, for example via a remote control device, it is particularly advantageous if the reversing device a calculation routine for converting the registered stroke duration in dependence on the set on a remote control unit flow.
  • a sensor for monitoring the hydraulic pressure on the high-pressure side of the reversing pump is provided, the output signal of which can be evaluated with a pressure monitoring routine of the reversing device for triggering a diverter pipe reversal and reverse flow of the reversing pump.
  • a mean pump pressure can be determined and stored during each pressure stroke.
  • the pressure monitoring routine then has an algorithm for determining a pressure increase occurring at the end of each pressure stroke in the respective drive cylinder relative to the mean pressure value and for converting it into a changeover signal for the transfer tube and / or the reversing pump.
  • the reversing device may also have a responsive to the output signals Zylinderschaltsensoren Weg Weg jointlynrachungsroutine for triggering the Rohr originallyum penetrateung and / or reverse flow of the reversing pump.
  • the reversing device may additionally have a measuring routine for determining the duration of stroke from the output signals of the cylinder switching sensors and for their registration. The stroke duration registered in a data memory in this way can be used in an emergency to control the flow reversal.
  • a preferred embodiment of the invention provides that the path monitoring routine responsive to selected cylinder switching sensors, the pressure monitoring routine responding to the pressure measurement values, and the time monitoring routine responding to the stroke time are preferably form hierarchically structured, redundant program sequence for reversing the pipe switch and / or the reversing pump.
  • the control according to the invention switches over the reversing pump when the bottom-side cylinder switch is reached during normal operation and thus ensures a continuous flow of concrete.
  • the respective stroke duration is calculated during operation and the mean high pressure at the pressure output of the reversing pump is determined and stored in data memories.
  • the controller for the continued operation of the pump can be automatically switched to at least one of the bottom-side Zylinderschaltsensoren.
  • the rod-side cylinder shift sensors are indeed prioritized. In operation, however, the rod and the bottom side cylinder switching sensors are monitored and can be activated independently of each other for the aforementioned measuring operations.
  • the stroke time since the last switching operation can be monitored and compared with the registered stroke duration.
  • the estimated stroke time can be calculated as a function of the flow rate, the speed or the viscosity of the conveyed material. If the stroke time has almost expired, the high pressure at the pump outlet is compared with the average stored high pressure of the current stroke. In the case of an increase in the pressure above a predetermined threshold, a forced reversal can be initiated in this case.
  • the measures described above can also be used individually for reversing the diverter valve and the reversing pump.
  • control arrangement is corresponding to a sludge pump Fig. 1 determined
  • the two delivery cylinder 50, 50 ', the front-side openings 52 open into a material feed container 54 and alternately during the pressure stroke via a diverter 56 with a delivery line 58 are connectable.
  • the delivery cylinders 50, 50 ' are driven in a push-pull manner via hydraulic drive cylinders 5, 5' and a reversible hydraulic pump 6.
  • the delivery pistons 60, 60 'of the delivery cylinders 50, 50' are connected to the pistons 8, 8 'of the drive cylinders 5, 5' via a common piston rod 9, 9 '.
  • the drive cylinders 5, 5 ' are applied in the embodiment shown on the bottom side via the hydraulic lines 11, 11' of the hydraulic circuit by means of the reversing pump 6 with pressure oil and are at their rod-side end hydraulically connected to each other via a swing oil pipe 12.
  • the direction of movement of the drive pistons 8, 8 ', and thus the common piston rods 9, 9', is thereby reversed, that the direction of flow of the reversing pump 6 is reversed via a reversing device 18 containing a computer 14 and an adjusting mechanism 16.
  • the reversing pump 6 has for this purpose a swash plate 62, which is pivoted through the reversal by its zero position, so that the conveying direction of the pressure oil in the hydraulic lines 11, 11 'reverses.
  • the delivery rate of the reversing pump 6 can be varied by the swivel angle of the swash plate 62 at a predetermined speed of the drive motor, not shown.
  • the swivel angle of the swash plate 62 can be adjusted via a remote control device 64 with the assistance of the computer 14.
  • the reversal of the reversing pump 6 and the diverter 56 takes place as soon as the pistons 8, 8 'of the drive cylinders 5, 5' reach their end position.
  • the reversing device 18 has for this purpose a plurality of redundant control routines which are linked together to form a hierarchically structured program sequence (cf. Fig. 3 ).
  • the reversing device utilizes output signals of the cylinder-side sensors 20, 22 and 20 ', 22' arranged at a distance from the rod-side and bottom-side ends of the two drive cylinders 5, 5 ', which are connected on the output side to the computer-controlled reversing device 18.
  • the cylinder switch sensors respond to the drive piston 8, 8 'passing by during the pumping operation and signal this event to the computer input 66, 68.
  • a changeover signal 76 is triggered in the changeover device which reverses the reversing pump 6 via the adjusting mechanism 16.
  • Um vervorgangs also a reversal of the diverter 56 via the directional control valve and the plunger cylinder 72, 72 'is triggered.
  • the computer 14 has a path monitoring routine 40, in which the output signals of the rod-side cylinder shift sensors 20, 20 'are evaluated to form a reversing signal 76 for the reversing pump 6 and / or the pipe switch 56.
  • a path monitoring routine 40 in which the output signals of the rod-side cylinder shift sensors 20, 20 'are evaluated to form a reversing signal 76 for the reversing pump 6 and / or the pipe switch 56.
  • at least one of the rod-side cylinder shift sensors 20, 20 'fails at least one of the bottom-side cylinder shift sensors 22, 22' is activated in its place via the monitoring routine 40 to form the changeover signal 76.
  • the reversing device 18 further includes a pressure sensor 24 which is connected to the high-pressure side 78 of the reversing pump 6 and whose output signal is evaluated in the computer 14 by means of a pressure monitoring routine 80.
  • the pressure monitoring routine 80 calculates a medium high pressure in the course of a lifting operation and comprises an algorithm for determining a pressure increase occurring at the end of each delivery stroke and converting it into a reversing signal 76 'for the reversing pump 6 and / or the diverter 56.
  • This reversing signal is preferred a failure of the cylinder shift sensors 20, 20 '; 22, 22 'used for reversing.
  • a stroke duration dependent on the delivery rate and the drive speed of the reversing pump 6 can be determined and stored in a data memory of the computer 14. Even during the pumping operation, the stroke duration can be controlled via the rod-side and bottom-side cylinder shift sensors 20, 20 '; 22, 22 'depending on the set flow rate and the engine speed measure and register. If, after each switching operation, the stroke time is monitored and compared with the registered stroke duration, a reversing signal 76 "for the reversing pump 6 and / or the diverter 56 can be derived therefrom via a time monitoring routine 82 of the computer 14.
  • the comparison routine 82 expediently has an algorithm on, which is also a conversion of the stored stroke duration during the adjustment the flow rate and / or the engine speed allows.
  • the selected cylinder switch sensors 20, 20 '; 22, 22 'responsive monitoring routine 40, the pressure sensor 24 responsive pressure monitoring routine 80 and the stroke time responsive time monitoring routine 82 in this order to a redundant, priority-structured program sequence ( Fig. 3 ) linked together.
  • the reversal process is triggered via one of the three routines in the program sequence.
  • the stroke time is monitored after each switching operation and, if necessary, a new stroke duration is stored.
  • the invention relates to an apparatus and a method for controlling a two-cylinder slurry pump whose delivery piston is actuated by a hydraulic reversing pump 6 and via these driven hydraulic drive cylinder in push-pull.
  • the delivery cylinders 50, 50 ' are connected to a delivery line 58 via a diverter 56 at each pressure stroke. At the end of each delivery stroke in the delivery cylinders 50, 50 'a reversing operation of the pipe switch 56 and the reversing pump 6 is triggered.
  • the stroke duration of the pistons in the drive cylinders is measured and registered, and during each delivery stroke the stroke time is monitored and compared with the registered stroke duration, and that the reversing pump 6 is swiveled under flow reversal and / or the diverter valve is reversed when the stroke time the registered stroke duration exceeds by a predetermined amount.
  • the output signals of a pressure sensor connected to the reversing pump or cylinder shift sensors 20, 20 'arranged on the working cylinders can be evaluated for triggering a changeover process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

A liquid concrete pump has two cylinders and pistons alternately operated by a hydraulic reversing pump (6). For each pressure stroke the cylinders (50, 50') are connected to a delivery pipe (58) via a junction (56). The pump (6) and pipe junction (56) reverse direction at the end of each pressure stroke by a computer using information from a memory storage device and monitoring the time taken by each piston stroke.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Steuerung einer Zweizylinder-Dickstoffpumpe mit zwei über stirnseitige Öffnungen in einen Materialaufgabebehälter mündenden, mittels mindestens einer hydraulischen Reversierpumpe und über diese angesteuerter hydraulischer Antriebszylinder im Gegentakt betätigbaren Förderzylindern, mit einer innerhalb des Materialaufgabebehälters angeordneten, eintrittsseitig abwechselnd an die Öffnungen der Förderzylinder anschließbaren und die jeweils andere Öffnung freigebenden und austrittsseitig mit einer Förderleitung verbundenen, hydraulisch betätigbaren Rohrweiche, wobei jeweils bei Beendigung eines Förderhubs ein Umsteuervorgang der Rohrweiche ausgelöst wird, wobei ferner die Antriebszylinder an ihrem einen Ende unter Bildung eines geschlossenen Hydraulikkreises mit je einem Anschluss der Reversierpumpe und an ihrem anderen Ende über eine Schaukelölleitung miteinander hydraulisch verbunden sind und wobei zur Umsteuerung der Rohrweiche Drucköl aus den von der Reversierpumpe zu den Antriebszylindern führenden Hydraulikleitungen abgezweigt wird.The invention relates to an apparatus and a method for controlling a two-cylinder slurry pump with two opening on the front side openings in a material feed container, by means of at least one hydraulic reversing and controlled by these hydraulic drive cylinder push-pull delivery cylinders, arranged with an arranged within the material feed container, the inlet side alternately connect the openings of the delivery cylinder and the other opening releasing and outlet side connected to a delivery line, hydraulically actuated diverter, each at the end of a delivery stroke a Umsteuervorgang the diverter is triggered, further wherein the drive cylinder at one end to form a closed hydraulic circuit with each a connection of the reversing pump and at its other end via a swing oil pipe are hydraulically connected to each other and wherein to Umsteue tion of the diverter oil pressure oil is diverted from the leading from the reversing pump to the drive cylinders hydraulic lines.

Es ist eine Vorrichtung zur Steuerung einer Zweizylinder-Dickstoffpumpe dieser Art bekannt ( DE-A 195 42 258 EP0 562 398 A ), bei welcher die Endlagen der Kolben der Antriebszylinder mittels Zylinderschaltsensoren unter Erzeugung von Endlagensignalen abgreifbar sind. Die Durchflussumkehr der Reversierpumpe ist dort über die Endlagensignale der Antriebszylinder auslösbar. In der Praxis werden die Endlagensignale üblicherweise über die beiden stangenseitigen Zylinderschaltsensoren ausgelöst. Es kommt aber immer wieder vor, dass die Zylinderschaltsensoren ausfallen. In einem solchen Fall musste bisher auf Handbetrieb umgeschaltet oder die Maschine abgeschaltet werden.It is a device for controlling a two-cylinder thick matter pump of this type known ( DE-A 195 42 258 EP0 562 398 A ), in which the end positions of the pistons of the drive cylinder can be tapped off by means of cylinder shift sensors to generate end position signals. The reverse flow of the reversing pump is triggered there via the end position signals of the drive cylinder. In practice, the end position signals are usually triggered via the two rod-side cylinder shift sensors. But it happens again and again that the cylinder switch sensors fail. In such a case previously had to be switched to manual mode or shut down the machine.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren zu entwickeln, womit auch ohne die heute üblichen Zylinderschaltsensoren ein zuverlässiger Pumpenbetrieb mit kontinuierlichem Betonfluss gewährleistet werden kann.Proceeding from this, the present invention seeks to develop a device and a method, which even without the usual today cylinder switch sensors reliable pump operation can be ensured with continuous concrete flow.

Zur Lösung dieser Aufgabe werden die in den Patentansprüchen 1 und 10 angegebenen Merkmalskombinationen vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem, the feature combinations specified in the claims 1 and 10 are proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

Die erfindungsgemäße Lösung geht vor allem von der Erkenntnis aus, dass bei Einbeziehung einer Rechnersteuerung zusätzliche Betriebsdaten aus dem Hydraulikkreis zur Ansteuerung der Reversierpumpe und der Rohrweiche ausgewertet werden können.The solution according to the invention is based above all on the knowledge that, with the inclusion of a computer control, additional operating data can be evaluated from the hydraulic circuit for controlling the reversing pump and the pipe switch.

Die erfindungsgemäße Lösung besteht im Wesentlichen darin, dass die Umsteuereinrichtung eine computergestützte Anordnung zur Bestimmung der voraussichtlichen Hubdauer und zu deren Registrierung in einem Datenspeicher sowie zur Zeitüberwachung während eines jeden Kolbenhubs und zur Auslösung einer Rohrweichenumsteuerung und Durchflussumkehr der Reversierpumpe nach Maßgabe einer definierten, im Vergleich zur voraussichtlichen Hubdauer verstrichenen Hubzeit aufweist. Bevorzugt weist dabei die Umsteuereinrichtung eine Zeitüberwachungsroutine auf, die einen Algorithmus zur Bestimmung eines Vergleichswerts aus Hubzeit und voraussichtlicher Hubdauer und zu deren Umsetzung bei Überschreiten eines vorgegebenen Werts in ein Umsteuersignal für die Rohrweiche und/oder die Reversierpumpe aufweist. Eine vorteilhafte Ausgestaltung der Erfindung sieht dabei vor, dass die Umsteuereinrichtung eine Eingaberoutine zur Abspeicherung der bei einem Einmessen der Betonpumpe bei mindestens einer definierten Fördermenge gemessenen Hubdauer aufweist. Da die Fördermenge bei computerunterstützten Betonpumpen beispielsweise über ein Fernsteuergerät variiert werden kann, ist es von besonderem Vorteil, wenn die Umsteuereinrichtung eine Rechenroutine zur Umrechnung der registrierten Hubdauer in Abhängigkeit von der an einem Fernsteuergerät eingestellten Fördermenge aufweist.The solution according to the invention consists essentially in that the reversing device has a computer-aided arrangement for determining the anticipated stroke duration and its registration in a data memory and for monitoring the time during each piston stroke and for initiating a diverter pipe reversal and reverse flow of the reversing pump in accordance with a defined, compared to estimated lift time has elapsed stroke time. The reversing device preferably has a time monitoring routine which has an algorithm for determining a comparison value from the stroke time and the anticipated stroke duration and for converting it when a predetermined value in a reversing signal for the diverter switch and / or the reversing pump is exceeded. An advantageous embodiment of the invention provides that the reversing device has an input routine for storing the measured during a calibration of the concrete pump at least one defined flow rate stroke duration. Since the flow rate can be varied in computer-aided concrete pumps, for example via a remote control device, it is particularly advantageous if the reversing device a calculation routine for converting the registered stroke duration in dependence on the set on a remote control unit flow.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist ein Sensor zur Überwachung des Hydraulikdrucks auf der Hochdruckseite der Reversierpumpe vorgesehen, dessen Ausgangssignal mit einer Drucküberwachungsroutine der Umsteuereinrichtung zur Auslösung einer Rohrweichenumsteuerung und Durchflussumkehr der Reversierpumpe auswertbar ist. Zu diesem Zweck kann während eines jeden Druckhubs ein mittlerer Pumpendruck ermittelt und abgespeichert werden. Die Drucküberwachungsroutine weist dann einen Algorithmus zur Bestimmung eines am Ende eines jeden Druckhubs im betreffenden Antriebszylinder gegenüber dem mittleren Druckwert auftretenden Druckanstieg und zu dessen Umsetzung in ein Umsteuersignal für die Rohrweiche und/oder die Reversierpumpe auf.According to an advantageous development of the invention, a sensor for monitoring the hydraulic pressure on the high-pressure side of the reversing pump is provided, the output signal of which can be evaluated with a pressure monitoring routine of the reversing device for triggering a diverter pipe reversal and reverse flow of the reversing pump. For this purpose, a mean pump pressure can be determined and stored during each pressure stroke. The pressure monitoring routine then has an algorithm for determining a pressure increase occurring at the end of each pressure stroke in the respective drive cylinder relative to the mean pressure value and for converting it into a changeover signal for the transfer tube and / or the reversing pump.

Wenn im Abstand von den stangen- und bodenseitigen Enden der Antriebszylinder je ein auf einen vorbeilaufenden Kolben ansprechender Zylinderschaltsensor angeordnet ist, kann die Umsteuereinrichtung außerdem eine auf die Ausgangssignale ausgewählter Zylinderschaltsensoren ansprechende Wegübennrachungsroutine zur Auslösung der Rohrweichenumsteuerung und/oder Durchflussumkehr der Reversierpumpe aufweisen. Die Umsteuereinrichtung kann in diesem Fall zusätzlich eine Messroutine zur Hubdauerbestimmung aus den Ausgangssignalen der Zylinderschaltsensoren und zu deren Registrierung aufweisen. Die auf diese Weise in einem Datenspeicher registrierte Hubdauer kann im Notfall zur Zeitsteuerung der Durchflussumkehr eingesetzt werden.If at a distance from the rod and bottom ends of the drive cylinder depending on a passing piston responsive cylinder switch sensor is arranged, the reversing device may also have a responsive to the output signals Zylinderschaltsensoren Wegübennrachungsroutine for triggering the Rohrweichenumsteuerung and / or reverse flow of the reversing pump. In this case, the reversing device may additionally have a measuring routine for determining the duration of stroke from the output signals of the cylinder switching sensors and for their registration. The stroke duration registered in a data memory in this way can be used in an emergency to control the flow reversal.

Eine bevorzugte Ausgestaltung der Erfindung sieht vor, dass die auf ausgewählte Zylinderschaltsensoren ansprechende Wegüberwachungsroutine, die auf die Druckmesswerte ansprechende Drucküberwachungsroutine und die auf die Hubzeit ansprechende Zeitüberwachungsroutine eine vorzugsweise hierarchisch strukturierte, redundante Programmfolge zur Umsteuerung der Rohrweiche und/oder der Reversierpumpe bilden.A preferred embodiment of the invention provides that the path monitoring routine responsive to selected cylinder switching sensors, the pressure monitoring routine responding to the pressure measurement values, and the time monitoring routine responding to the stroke time are preferably form hierarchically structured, redundant program sequence for reversing the pipe switch and / or the reversing pump.

Die erfindungsgemäße Steuerung schaltet im Normalbetrieb die Reversierpumpe beim Erreichen der bodenseitigen Zylinderschalter um und sorgt somit für einen kontinuierlichen Betonfluss. Gleichzeitig wird während des Betriebs die jeweilige Hubdauer errechnet und der mittlere Hochdruck am Druckausgang der Reversierpumpe ermittelt und in Datenspeichern abgelegt.The control according to the invention switches over the reversing pump when the bottom-side cylinder switch is reached during normal operation and thus ensures a continuous flow of concrete. At the same time, the respective stroke duration is calculated during operation and the mean high pressure at the pressure output of the reversing pump is determined and stored in data memories.

Für den Fall, dass mindestens einer der stangenseitigen Zylinderschaltsensoren ausfällt, kann die Steuerung für den Weiterbetrieb der Pumpe automatisch auf mindestens einen der bodenseitigen Zylinderschaltsensoren umgeschaltet werden. Die stangenseitigen Zylinderschaltsensoren sind zwar priorisiert. Beim Betrieb werden jedoch die stangen- und die bodenseitigen Zylinderschaltsensoren überwacht und können unabhängig voneinander für die vorgenannten Messvorgänge aktiviert werden.In the event that at least one of the rod-side Zylinderschaltsensoren fails, the controller for the continued operation of the pump can be automatically switched to at least one of the bottom-side Zylinderschaltsensoren. The rod-side cylinder shift sensors are indeed prioritized. In operation, however, the rod and the bottom side cylinder switching sensors are monitored and can be activated independently of each other for the aforementioned measuring operations.

Für den Fall, dass drei oder alle vier Zylinderschaltsensoren ausfallen, kann mit den zusätzlichen erfindungsgemäßen Maßnahmen die Hubzeit seit dem letzten Umschaltvorgang überwacht und mit der registrierten Hubdauer verglichen werden. Die voraussichtliche Hubdauer kann in Abhängigkeit von der Fördermenge, der Drehzahl oder der Viskosität des Förderguts berechnet werden. Ist die Hubzeit annähernd abgelaufen, so wird der Hochdruck am Pumpenausgang mit dem mittleren abgespeicherten Hochdruck des aktuellen Hubes verglichen. Bei einem Anstieg des Druckes über eine vorgegebene Schwelle kann in diesem Fall eine Zwangsumsteuerung veranlasst werden.In the event that three or all four cylinder shift sensors fail, with the additional measures according to the invention, the stroke time since the last switching operation can be monitored and compared with the registered stroke duration. The estimated stroke time can be calculated as a function of the flow rate, the speed or the viscosity of the conveyed material. If the stroke time has almost expired, the high pressure at the pump outlet is compared with the average stored high pressure of the current stroke. In the case of an increase in the pressure above a predetermined threshold, a forced reversal can be initiated in this case.

Sofern die gemessene Hubzeit die registrierte Hubdauer übersteigt und bis dahin kein Druckanstieg festgestellt wird, kann eine Zwangsumsteuerung allein aufgrund der Zeitmessung erfolgen. Damit ist sichergestellt, dass auch bei einem Ausfall des Drucksensors ein automatischer Weiterbetrieb der Betonpumpe gewährleistet ist.If the measured stroke time exceeds the registered stroke duration and until then no increase in pressure is detected, a forced reversal can take place solely on the basis of the time measurement. This ensures that as well in case of failure of the pressure sensor, an automatic further operation of the concrete pump is ensured.

Zur Vereinfachung der Pumpensteuerung können die vorstehend beschriebenen Maßnahmen auch einzeln zur Umsteuerung der Rohrweiche und der Reversierpumpe eingesetzt werden.To simplify the pump control, the measures described above can also be used individually for reversing the diverter valve and the reversing pump.

Im Folgenden wird die Erfindung anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
einen Ausschnitt aus einer Zweizylinder-Dickstoffpumpe in teilweise geschnittener schaubildlicher Darstellung;
Fig. 2
ein Schaltschema einer rechnergestützten Antriebshydraulik für eine Zweizylinder-Dickstoffpumpe;
Fig. 3
ein Flussdiagramm einer redundanten Programmfolge für die Pumpensteuerung.
In the following the invention will be explained in more detail with reference to an embodiment shown schematically in the drawing. Show it
Fig. 1
a section of a two-cylinder slurry pump in partially cut perspective view;
Fig. 2
a circuit diagram of a computer-aided drive hydraulics for a two-cylinder slurry pump;
Fig. 3
a flowchart of a redundant program sequence for the pump control.

Die in Fig. 2 dargestellte Steuerungsanordnung ist für eine Dickstoffpumpe entsprechend Fig. 1 bestimmt, die zwei Förderzylinder 50, 50' aufweist, deren stirnseitige Öffnungen 52 in einen Materialaufgabebehälter 54 münden und abwechselnd während des Druckhubs über eine Rohrweiche 56 mit einer Förderleitung 58 verbindbar sind. Die Förderzylinder 50, 50' werden über hydraulische Antriebszylinder 5, 5' und eine Reversierhydropumpe 6 im Gegentakt angetrieben. Zu diesem Zweck sind die Förderkolben 60, 60' der Förderzylinder 50, 50' mit den Kolben 8, 8' der Antriebszylinder 5, 5' über eine gemeinsame Kolbenstange 9, 9' verbunden.In the Fig. 2 shown control arrangement is corresponding to a sludge pump Fig. 1 determined, the two delivery cylinder 50, 50 ', the front-side openings 52 open into a material feed container 54 and alternately during the pressure stroke via a diverter 56 with a delivery line 58 are connectable. The delivery cylinders 50, 50 'are driven in a push-pull manner via hydraulic drive cylinders 5, 5' and a reversible hydraulic pump 6. For this purpose, the delivery pistons 60, 60 'of the delivery cylinders 50, 50' are connected to the pistons 8, 8 'of the drive cylinders 5, 5' via a common piston rod 9, 9 '.

Die Antriebszylinder 5, 5' werden bei dem gezeigten Ausführungsbeispiel bodenseitig über die Hydraulikleitungen 11, 11' des Hydraulikkreislaufs mit Hilfe der Reversierpumpe 6 mit Drucköl beaufschlagt und sind an ihrem stangenseitigen Ende über eine Schaukelölleitung 12 hydraulisch miteinander verbunden. Die Bewegungsrichtung der Antriebskolben 8, 8', und damit der gemeinsamen Kolbenstangen 9, 9', wird dadurch umgekehrt, dass die Durchflussrichtung der Reversierpumpe 6 über eine einen Computer 14 und einen Verstellmechanismus 16 enthaltende Umsteuereinrichtung 18 umgekehrt wird. Die Reversierpumpe 6 weist zu diesem Zweck eine Schrägscheibe 62 auf, die bei der Umsteuerung durch ihre Nulllage hindurchgeschwenkt wird, so dass sich die Förderrichtung des Drucköls in den Hydraulikleitungen 11, 11' umkehrt. Die Fördermenge der Reversierpumpe 6 kann bei vorgegebener Drehzahl des nicht dargestellten Antriebsmotors durch den Schwenkwinkel der Schrägscheibe 62 variiert werden. Der Schwenkwinkel der Schrägscheibe 62 kann dabei über ein Fernsteuergerät 64 mit Unterstützung des Computers 14 verstellt werden.The drive cylinders 5, 5 'are applied in the embodiment shown on the bottom side via the hydraulic lines 11, 11' of the hydraulic circuit by means of the reversing pump 6 with pressure oil and are at their rod-side end hydraulically connected to each other via a swing oil pipe 12. The direction of movement of the drive pistons 8, 8 ', and thus the common piston rods 9, 9', is thereby reversed, that the direction of flow of the reversing pump 6 is reversed via a reversing device 18 containing a computer 14 and an adjusting mechanism 16. The reversing pump 6 has for this purpose a swash plate 62, which is pivoted through the reversal by its zero position, so that the conveying direction of the pressure oil in the hydraulic lines 11, 11 'reverses. The delivery rate of the reversing pump 6 can be varied by the swivel angle of the swash plate 62 at a predetermined speed of the drive motor, not shown. The swivel angle of the swash plate 62 can be adjusted via a remote control device 64 with the assistance of the computer 14.

Die Umsteuerung der Reversierpumpe 6 und der Rohrweiche 56 erfolgt, sobald die Kolben 8, 8' der Antriebszylinder 5, 5' ihre Endlage erreichen. Die Umsteuereinrichtung 18 weist zu diesem Zweck mehrere redundante Steuerroutinen auf, die unter Bildung einer hierarchisch strukturierten Programmfolge miteinander verknüpft sind (vgl. Fig. 3).The reversal of the reversing pump 6 and the diverter 56 takes place as soon as the pistons 8, 8 'of the drive cylinders 5, 5' reach their end position. The reversing device 18 has for this purpose a plurality of redundant control routines which are linked together to form a hierarchically structured program sequence (cf. Fig. 3 ).

Die Umsteuereinrichtung verwertet Ausgangssignale der jeweils im Abstand von den stangenseitigen und bodenseitigen Enden der beiden Antriebszylinder 5, 5' angeordneten Zylinderschaltsensoren 20, 22 und 20', 22', die ausgangsseitig mit der rechnergestützen Umsteuereinrichtung 18 verbunden sind. Die Zylinderschaltsensoren sprechen auf die beim Pumpbetrieb vorbeilaufenden Antriebskolben 8, 8' an und signalisieren dieses Ereignis an den Rechnereingang 66, 68. Beim Auftreten der Ausgangssignale wird in der Umsteuereinrichtung ein Umsteuersignal 76 ausgelöst, das die Reversierpumpe 6 über den Verstellmechanismus 16 umsteuert. Im Zuge des Umsteuervorgangs wird außerdem eine Umsteuerung der Rohrweiche 56 über das Wegeventil und die Plungerzylinder 72, 72' ausgelöst. Im Normalbetrieb werden primär die Signale der stangenseitigen Zylinderschaltsensoren 20, 20' zur Erzeugung eines Umsteuersignals 76 verwendet. Dazu weist der Computer 14 eine Wegüberwachungsroutine 40 auf, in welcher die Ausgangssignale der stangenseitigen Zylinderschaltsensoren 20, 20' unter Bildung eines Umsteuersignals 76 für die Reversierpumpe 6 und/oder die Rohrweiche 56 ausgewertet werden. Für den Fall, dass mindestens einer der stangenseitigen Zylinderschaltsensoren 20, 20' ausfällt, wird an deren Stelle mindestens einer den bodenseitigen Zylinderschaltsensoren 22, 22' zur Bildung des Umsteuersignals 76 über die Überwachungsroutine 40 aktiviert.The reversing device utilizes output signals of the cylinder-side sensors 20, 22 and 20 ', 22' arranged at a distance from the rod-side and bottom-side ends of the two drive cylinders 5, 5 ', which are connected on the output side to the computer-controlled reversing device 18. The cylinder switch sensors respond to the drive piston 8, 8 'passing by during the pumping operation and signal this event to the computer input 66, 68. When the output signals appear, a changeover signal 76 is triggered in the changeover device which reverses the reversing pump 6 via the adjusting mechanism 16. In the course of Umsteuervorgangs also a reversal of the diverter 56 via the directional control valve and the plunger cylinder 72, 72 'is triggered. In normal operation, the signals of the rod-side Zylinderschaltsensoren 20, 20 'used to generate a Umsteuersignals 76. For this purpose, the computer 14 has a path monitoring routine 40, in which the output signals of the rod-side cylinder shift sensors 20, 20 'are evaluated to form a reversing signal 76 for the reversing pump 6 and / or the pipe switch 56. In the event that at least one of the rod-side cylinder shift sensors 20, 20 'fails, at least one of the bottom-side cylinder shift sensors 22, 22' is activated in its place via the monitoring routine 40 to form the changeover signal 76.

Die Umsteuereinrichtung 18 umfasst ferner einen Drucksensor 24, der an die Hochdruckseite 78 der Reversierpumpe 6 angeschlossen ist und dessen Ausgangssignal im Rechner 14 mit Hilfe einer Drucküberwachungsroutine 80 ausgewertet wird. Die Drucküberwachungsroutine 80 errechnet im Verlauf eines Hubvorgangs einen mittleren Hochdruck und umfasst einen Algorithmus zur Bestimmung eines am Ende eines jeden Förderhubs auftretenden Druckanstiegs und zu dessen Umsetzung in ein Umsteuersignal 76' für die Reversierpumpe 6 und/oder die Rohrweiche 56. Dieses Umsteuersignal wird bevorzugt bei einem Ausfall der Zylinderschaltsensoren 20, 20'; 22, 22' zur Umsteuerung verwendet.The reversing device 18 further includes a pressure sensor 24 which is connected to the high-pressure side 78 of the reversing pump 6 and whose output signal is evaluated in the computer 14 by means of a pressure monitoring routine 80. The pressure monitoring routine 80 calculates a medium high pressure in the course of a lifting operation and comprises an algorithm for determining a pressure increase occurring at the end of each delivery stroke and converting it into a reversing signal 76 'for the reversing pump 6 and / or the diverter 56. This reversing signal is preferred a failure of the cylinder shift sensors 20, 20 '; 22, 22 'used for reversing.

Weiter kann bei der Einmessung der Betonpumpe eine von der Fördermenge und der Antriebsdrehzahl der Reversierpumpe 6 abhängige Hubdauer bestimmt und in einem Datenspeicher des Rechners 14 abgelegt werden. Auch während des Pumpbetriebs lässt sich die Hubdauer über die stangenseitigen und bodenseitigen Zylinderschaltsensoren 20, 20'; 22, 22' in Abhängigkeit von der eingestellten Fördermenge und der Motordrehzahl messen und registrieren. Wenn dazu nach jedem Umschaltvorgang die Hubzeit überwacht und mit der registrierten Hubdauer verglichen wird, kann hieraus über eine Zeitüberwachungsroutine 82 des Rechners 14 ein Umsteuersignal 76" für die Reversierpumpe 6 und/oder die Rohrweiche 56 abgeleitet werden. Die Vergleichsroutine 82 weist dabei zweckmäßig einen Algorithmus auf, der auch eine Umrechnung der gespeicherten Hubdauer bei der Verstellung der Fördermenge und/oder der Motordrehzahl ermöglicht. Mit dem hieraus abgeleiteten Umsteuersignal 76" wird sichergestellt, dass auch bei Ausfall der Zylinderschaltsensoren 20, 20'; 22, 22' und des Drucksensors 24 oder bei Nichtvorhandensein dieser Sensoren eine automatische Umsteuerung der Reversierpumpe 6 und der Rohrweiche 56 ausgelöst werden kann.Furthermore, during the calibration of the concrete pump, a stroke duration dependent on the delivery rate and the drive speed of the reversing pump 6 can be determined and stored in a data memory of the computer 14. Even during the pumping operation, the stroke duration can be controlled via the rod-side and bottom-side cylinder shift sensors 20, 20 '; 22, 22 'depending on the set flow rate and the engine speed measure and register. If, after each switching operation, the stroke time is monitored and compared with the registered stroke duration, a reversing signal 76 "for the reversing pump 6 and / or the diverter 56 can be derived therefrom via a time monitoring routine 82 of the computer 14. The comparison routine 82 expediently has an algorithm on, which is also a conversion of the stored stroke duration during the adjustment the flow rate and / or the engine speed allows. With the reversal signal 76 "derived therefrom, it is ensured that even if the cylinder switching sensors 20, 20 ', 22', 22 'and the pressure sensor 24 fail or in the absence of these sensors, an automatic reversing of the reversing pump 6 and the diverter 56 can be triggered.

In der beschriebenen Umsteuereinrichtung sind die auf ausgewählte Zylinderschaltsensoren 20, 20'; 22, 22' ansprechende Überwachungsroutine 40, die auf den Drucksensor 24 ansprechende Drucküberwachungsroutine 80 und die auf die Hubzeit ansprechende Zeitüberwachungsroutine 82 in dieser Reihenfolge zu einer redundanten, prioritätsstrukturierten Programmfolge (Fig. 3) miteinander verknüpft. Die Auslösung des Umsteuervorgangs erfolgt über eine der drei Routinen der Programmfolge. Außerdem wird in dem Programmblock 84 nach jedem Umsteuervorgang die Hubzeit überwacht und gegebenenfalls eine neue Hubdauer abgespeichert.In the described reversing device, the selected cylinder switch sensors 20, 20 '; 22, 22 'responsive monitoring routine 40, the pressure sensor 24 responsive pressure monitoring routine 80 and the stroke time responsive time monitoring routine 82 in this order to a redundant, priority-structured program sequence ( Fig. 3 ) linked together. The reversal process is triggered via one of the three routines in the program sequence. In addition, in the program block 84, the stroke time is monitored after each switching operation and, if necessary, a new stroke duration is stored.

Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf eine Vorrichtung und ein Verfahren zur Steuerung einer Zweizylinder-Dickstoffpumpe, deren Förderkolben mittels einer hydraulischen Reversierpumpe 6 und über diese angesteuerter hydraulischer Antriebszylinder im Gegentakt betätigt werden. Die Förderzylinder 50, 50' werden bei jedem Druckhub über eine Rohrweiche 56 mit einer Förderleitung 58 verbunden. Bei Beendigung eines jeden Förderhubs in den Förderzylindern 50, 50' wird ein Umsteuervorgang der Rohrweiche 56 und der Reversierpumpe 6 ausgelöst. Um einen zuverlässigen Betrieb auch bei Ausfall von Schalt- oder Drucksensoren zu gewährleisten, wird gemäß der Erfindung vorgeschlagen, dass beim Einmessen der Betonpumpe und/oder während des Pumpbetriebs die Hubdauer der Kolben in den Antriebszylindern gemessen und registriert wird, und dass während eines jeden Förderhubs die Hubzeit überwacht und mit der registrierten Hubdauer verglichen wird, und dass die Reversierpumpe 6 jeweils unter Durchflussumkehr durchgeschwenkt und/oder die Rohrweiche umgesteuert wird, wenn die Hubzeit die registrierte Hubdauer um ein vorgegebenes Maß übersteigt. Zusätzlich können die Ausgangssignale eines mit der Reversierpumpe verbundenen Drucksensors oder an den Arbeitszylindern angeordneter Zylinderschaltsensoren 20, 20' zur Auslösung eines Umsteuervorgangs ausgewertet werden.In summary, the following is to be noted: The invention relates to an apparatus and a method for controlling a two-cylinder slurry pump whose delivery piston is actuated by a hydraulic reversing pump 6 and via these driven hydraulic drive cylinder in push-pull. The delivery cylinders 50, 50 'are connected to a delivery line 58 via a diverter 56 at each pressure stroke. At the end of each delivery stroke in the delivery cylinders 50, 50 'a reversing operation of the pipe switch 56 and the reversing pump 6 is triggered. In order to ensure reliable operation even in the event of failure of switching or pressure sensors, it is proposed according to the invention that during the metering of the concrete pump and / or during the pumping operation, the stroke duration of the pistons in the drive cylinders is measured and registered, and during each delivery stroke the stroke time is monitored and compared with the registered stroke duration, and that the reversing pump 6 is swiveled under flow reversal and / or the diverter valve is reversed when the stroke time the registered stroke duration exceeds by a predetermined amount. In addition, the output signals of a pressure sensor connected to the reversing pump or cylinder shift sensors 20, 20 'arranged on the working cylinders can be evaluated for triggering a changeover process.

Claims (15)

  1. Device for controlling a thick matter pump with two conveyor cylinders (50, 50') communicating via two end openings (52) in a material supply container (54), operated in counter stroke by a hydraulic reversible pump (6) via hydraulic drive cylinders (5, 5') control by said pump, with a hydraulically actuated pipe switch (56) provided within the material supply container (54), on its inlet side alternatingly connectable to one of the openings (52) of the conveyor cylinders (50, 50'), freeing the respective other opening, and on the outlet side connected with a conveyor conduit (58), wherein the drive cylinders (5, 5') are hydraulically connected with a connector of the reversible pump (6) via respectively one hydraulic line (11, 11'), and on their other end are connected to each other via an oscillating oil line (12), and further comprising a device (18) for reversing the reversible pump (6) after the conclusion of each piston stroke, thereby characterized, that the reversing device includes a computer assisted routine (84, 82) for determining an expected stroke duration and for the recording thereof in a data storage as well as for monitoring the time during each piston stroke, and for initiating a reversal of the pipe switch (56) and/or the flow-through reversal of the reversible pump (6) based on a comparison of the value of an elapsed stroke time with the expected stroke duration.
  2. Device according to Claim 1, thereby characterized, that the reversing device (18) includes a time monitoring routine (82), which includes an algorithm for determining a comparison value of stroke time and expected stroke duration and, in the case of determining an exceeding of a predetermined value, for the conversion thereof into a reversal signal (76") for the reversible pump (6) and/or the pipe switch (56).
  3. Device according to Claim 1 or 2, thereby characterized that the reversing device (18) includes an input routine for recording at least one stroke duration measured during calibration of the concrete pump following input, preferably via a remote control device (64), of at least one set target conveyance amount.
  4. Device according to one of Claims 1 through 3, thereby characterized, that the reversing device (18) includes a computer routine for converting or translating the recorded stroke duration in response to a conveyance amount set preferably in a remote control device (64).
  5. Device according to one of Claims 1 through 4, characterized by at least one sensor (24) for monitoring the hydraulic pressure on the high pressure side (78) of the reversible pump (6), of which the output signal is evaluated with a pressure monitoring device (80) of the reversing device (18) for initiating a pipe switch reversal and/or a flow-through reversal of the reversible pump (6).
  6. Device according to Claim 5, thereby characterized, that the pressure monitoring routine (80) includes an algorithm for determining a pressure increase occurring at the end of each pressure stroke on the high pressure side (78) of the reversible pump (6), and for the conversion thereof into a reversing signal (76') for the pipe switch (56) and/or the reversible pump (6).
  7. Device according to one of Claims 1 through 6, thereby characterized, that spaced apart from the rod end and floor end sides of the drive cylinder (5, 5') respectively one cylinder switch sensor (20, 20'; 22, 22') is provided responsive to a passing piston (8, 8'), and that the reversing device (18) includes a path monitoring routine (40) responsive to the output signal of selected cylinder switch sensors for reversing the pipe switch (56) and/or for initiating a flow-through reversal of the reversible pump (6).
  8. Device according to Claim 7, thereby characterized, that the reversing device (18) includes a measurement routine (84) for determination of stroke duration from the output signals of the cylinder switch sensors (20, 20'; 22, 22') and for the recordation thereof.
  9. Device according to one of Claims 1 through 8, thereby characterized, that the path monitoring routine (40) responsive to the selected cylinder switch sensors (20, 20'), the pressure monitoring routine (80) responding to pressure sensors (24) and the time monitoring routine (82) responsive to the stroke times form a program sequence for redundant reversal of the pipe switch (56) and/or the reversible pump (6).
  10. Device for controlling a thick matter pump with two conveyor cylinders (50, 50') of which two end openings (52) are in communication in a material supply container (54), operated in counter stroke via a hydraulic reversible pump (6) and via hydraulic drive cylinders (5, 5') controlled thereby, with a pipe switch (56), wherein respectively upon ending of a conveyance stroke in the conveyance cylinders (50, 50') a reversal process of the pipe switch (56) and/or the reversible pump (6) is initiated, thereby characterized, that during calibration of the concrete pump and/or during the pump operation the anticipated stroke duration of the piston (8, 8') in the drive cylinders (5, 5') is measured and recorded, that during each conveyance stroke the stroke time is monitored and compared with the anticipated stroke duration, and that the reversible pump (6) pivoted about with reversal of the flow-through is and/or the pipe switch (56) is reversed when the stroke time exceeds the anticipated stroke duration by a predetermined value.
  11. Process according to Claim 10, thereby characterized, that the recorded stroke duration is converted proportional to output or yield, depending upon a predetermined conveyance amount for the comparison with the actual stroke time.
  12. Process according to Claim 10 or 11, thereby characterized, that during the pump process the hydraulic pressure is monitored on the pressure side (78) of the reversible pump (6), and that a pressure increase measured at the end of one of each piston strokes is evaluated for formation of a reverse signal for the reversible pump (6) and/or the pipe switch (56).
  13. Process according to one of Claims 10 through 12, thereby characterized, that during the pumping process the passing by of the piston (8, 8') at the cylinder switch sensors (20, 20'; 22, 22') of the work or conveyor cylinder (5, 5'; 50, 50') is recorded and evaluated for determining a reverse signal for the reversible pump (6) and/or the pipe switch (56).
  14. Process according to Claim 13, thereby characterized, that the output signals of two cylinder switch sensors (20, 20') provided spaced apart from each other are evaluated for determining a stroke duration and evaluated for recording subsequent to each piston stroke.
  15. Process according to Claim 13 or 14, thereby characterized, that the output signals (76, 76', 76") of the cylinder switch sensors (20, 20'; 22, 22'), the pressure monitoring sensor (24) and the stroke time/stroke duration comparison (82) are used for redundant initiation of a reversing process of the reversible pump (6) and/or pipe switch (56).
EP05716191A 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder thick matter pump Expired - Lifetime EP1727980B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07119583A EP1906012B1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder pump for high-viscosity fluids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004015415A DE102004015415A1 (en) 2004-03-26 2004-03-26 Device and method for controlling a two-cylinder slurry pump
PCT/EP2005/002895 WO2005093252A1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder thick matter pump

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP07119583A Division EP1906012B1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder pump for high-viscosity fluids

Publications (2)

Publication Number Publication Date
EP1727980A1 EP1727980A1 (en) 2006-12-06
EP1727980B1 true EP1727980B1 (en) 2008-05-14

Family

ID=34963616

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07119583A Expired - Lifetime EP1906012B1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder pump for high-viscosity fluids
EP05716191A Expired - Lifetime EP1727980B1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder thick matter pump

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07119583A Expired - Lifetime EP1906012B1 (en) 2004-03-26 2005-03-18 Device and method for controlling a two-cylinder pump for high-viscosity fluids

Country Status (11)

Country Link
US (1) US7611331B2 (en)
EP (2) EP1906012B1 (en)
JP (2) JP5028255B2 (en)
KR (1) KR101187523B1 (en)
CN (1) CN100595436C (en)
AT (2) ATE413529T1 (en)
DE (3) DE102004015415A1 (en)
EA (1) EA007369B1 (en)
ES (2) ES2316137T3 (en)
UA (1) UA81964C2 (en)
WO (1) WO2005093252A1 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100449145C (en) * 2006-12-07 2009-01-07 浙江大学 Measuring method and device for concrete pump displacement
CN100402852C (en) * 2006-12-12 2008-07-16 浙江大学 Concrete pump real-time displacement measurement method and device
CN100406733C (en) * 2006-12-12 2008-07-30 浙江大学 Method and system for real-time displacement measurement of piston concrete pump
DE102007058118A1 (en) * 2007-11-30 2009-06-04 Putzmeister Concrete Pumps Gmbh Thick material e.g. liquid mortar, producing device for two-component injection system, has controller with pressure sensor and/or pressure switch actuated during pressure stroke upon pressure threshold value within thick material pump
RU2510466C2 (en) * 2009-09-30 2014-03-27 Бомбардир Рекриейшнл Продактс Инк. Electronic oil pump
IT1401514B1 (en) * 2010-08-03 2013-07-26 Cifa S P A Unico Socio PUMPING GROUP FOR A CONCRETE DISTRIBUTION MACHINE.
US9181943B2 (en) * 2010-08-20 2015-11-10 Graco Minnesota Inc. Method for synchronizing linear pump system
CN102062069A (en) * 2010-12-09 2011-05-18 三一重工股份有限公司 Material pumping device and pumping system thereof
CN102096899B (en) * 2010-12-15 2014-08-06 中钞长城金融设备控股有限公司 Correction method of linear array camera image
CN102094783B (en) * 2010-12-21 2013-07-17 李浩宇 Electric double-liquid chemical grouting pump
WO2012088850A1 (en) * 2010-12-29 2012-07-05 湖南三一智能控制设备有限公司 Material delivery system and switch device for delivery pipe thereof
CN102434443B (en) * 2011-12-07 2014-01-08 中联重科股份有限公司 Control device and control method of viscous body pumping mechanism and concrete pump
DE102012216242A1 (en) * 2012-09-13 2014-03-13 Putzmeister Engineering Gmbh Device for drive control of a two-cylinder slurry pump
CN103032421B (en) * 2012-12-26 2015-04-22 中联重科股份有限公司 Reversing hydraulic system, control method thereof and concrete pumping equipment
CN104180866B (en) * 2013-05-20 2018-09-28 中联重科股份有限公司 Method and device for determining pumping volume
CN103573727B (en) * 2013-11-07 2015-10-14 中联重科股份有限公司 Reversing control method and device for series oil cylinders and concrete pumping system
WO2015087337A1 (en) * 2013-12-12 2015-06-18 Amit Arun Gokhale Hydraulically operated but mechanically driven & mechanically reversed simple concrete pump
PT3137768T (en) * 2014-04-30 2021-01-19 Anthony George Hurter Supercritical water used fuel oil purification apparatus and process
CN104196692B (en) * 2014-07-15 2017-01-18 三一汽车制造有限公司 Pumping equipment, pumping system and reversing control device and method of pumping system
US9926925B2 (en) * 2014-09-04 2018-03-27 Schwing Bioset, Inc. Sludge flow measuring system
CN104329315B (en) * 2014-10-23 2017-04-12 徐州徐工施维英机械有限公司 Conveying equipment, conveying equipment metering device and method
WO2016137927A1 (en) * 2015-02-23 2016-09-01 Schlumberger Technology Corporation Methods and systems for pressurizing harsh fluids
WO2017097005A1 (en) * 2015-12-09 2017-06-15 湖南金能自动化设备有限公司 Device and method for transferring industrial emulsion explosive
US11149725B2 (en) 2016-01-20 2021-10-19 Weir Minerals Netherlands B.V. Hydraulic pump system for handling a slurry medium
CN105862869B (en) * 2016-04-12 2017-12-26 河南理工大学 A kind of filling system
CN105971862B (en) * 2016-05-24 2017-09-12 北汽福田汽车股份有限公司 A kind of pumping system reverse control method and its device
US10543817B2 (en) 2016-12-15 2020-01-28 Schwing America, Inc. Powered rear outrigger systems
DE112019004380T5 (en) * 2018-09-28 2021-06-10 Julio Vasquez System for monitoring concrete pumping systems
CN110173278A (en) * 2019-04-29 2019-08-27 安百拓（南京）建筑矿山设备有限公司 The pumping control method of wet-spraying machine
CA3160190A1 (en) * 2019-12-23 2021-07-01 Zvonimir Batarilo Multi-fluid delivery system
WO2021129958A1 (en) * 2019-12-23 2021-07-01 Acist Medical Systems Inc. Fluid delivery system
DE102020207970A1 (en) 2020-06-26 2021-12-30 Putzmeister Engineering Gmbh Method for operating a construction and / or thick matter pump for conveying construction and / or thick matter and construction and / or thick matter pump for conveying construction and / or thick matter
CN115492391B (en) * 2021-06-18 2024-05-24 润弘精密工程事业股份有限公司 Concrete pumping and delivery device and method thereof
TWI771067B (en) * 2021-06-18 2022-07-11 潤弘精密工程事業股份有限公司 Concrete pumping device and method of pumping concrete
CN114294211B (en) * 2021-12-28 2024-03-12 徐州徐工施维英机械有限公司 Emergency pumping method of electric control reversing concrete pump
CN116877374A (en) * 2023-07-04 2023-10-13 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) Intelligent grouting pump and grouting method thereof
DE102023120153A1 (en) * 2023-07-28 2025-01-30 Putzmeister Engineering Gmbh Method for operating a construction and/or thick matter pump system for conveying construction and/or thick matter and construction and/or thick matter pump system for conveying construction and/or thick matter

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU600521A1 (en) * 1973-06-28 1978-03-30 Государственный Проектно-Конструкторский И Научно-Исследовательский Институт По Автоматизации Угольной Промышленности Pump automatic control device
SU687256A1 (en) * 1977-10-07 1979-09-25 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Нефтяного Машиностроения Device for the regulation of pump operating mode
DE3365931D1 (en) * 1982-01-22 1986-10-16 Thomsen A F D Sales Service Slurry pump
US5388965A (en) * 1990-10-10 1995-02-14 Friedrich Wilhelm Schwing Gmbh Sludge pump with monitoring system
US5106272A (en) * 1990-10-10 1992-04-21 Schwing America, Inc. Sludge flow measuring system
DE3243576A1 (en) * 1982-11-25 1984-05-30 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Two-cylinder piston pump, especially for thick matter
DE3243738A1 (en) * 1982-11-26 1984-05-30 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Hydraulic reversal for two-cylinder piston pump
JPH0633767B2 (en) * 1983-07-04 1994-05-02 三菱重工業株式会社 Slurry pump
SU1208535A1 (en) * 1984-06-25 1986-01-30 Предприятие П/Я А-7204 Device for programmed control of object
JPH034788Y2 (en) * 1985-08-27 1991-02-07
DE3910120A1 (en) * 1989-03-29 1990-10-04 Putzmeister Maschf CONTROL ARRANGEMENT FOR A TWO-CYLINDER FUEL PUMP
DE4208754A1 (en) * 1992-03-19 1993-09-23 Schwing Gmbh F DICKER PUMP WITH CONVEYOR CYLINDER, IN PARTICULAR TWO-CYLINDER CONCRETE PUMP
DE59303049D1 (en) 1992-03-21 1996-08-01 Schwing Gmbh F Slurry pump
DE4214109C2 (en) * 1992-04-29 1994-07-28 Abel Gmbh & Co Solid fuel pump
US5332366A (en) * 1993-01-22 1994-07-26 Schwing America, Inc. Concrete pump monitoring system
JP2597106Y2 (en) * 1993-03-19 1999-06-28 極東開発工業株式会社 Discharge rate display device for piston type concrete pump
US5330327A (en) * 1993-04-27 1994-07-19 Schwing America, Inc. Transfer tube material flow management
JPH0921383A (en) * 1995-07-06 1997-01-21 Furukawa Co Ltd Changeover control device of piston pump
DE19542258A1 (en) * 1995-11-13 1997-05-15 Putzmeister Maschf Method and device for controlling a two-cylinder thick matter pump
RU2165642C2 (en) * 1997-05-20 2001-04-20 Самарская Государственная архитектурно-строительная академия (СамГАСА) Computer-aided data management system for monitoring pump-and-pipeline system that functions to handle water and petroleum products
JP3882153B2 (en) * 1997-06-05 2007-02-14 石川島建機株式会社 Switching control device for high viscosity fluid pump
JPH1182312A (en) * 1997-09-12 1999-03-26 Furukawa Co Ltd Hydraulically driven piston pump
JP4219464B2 (en) * 1999-02-09 2009-02-04 古河機械金属株式会社 Piston pump switching shock reduction device
DE10036202A1 (en) * 2000-07-24 2002-02-07 Putzmeister Ag Slurry pump
DE10150467A1 (en) * 2001-10-16 2003-04-17 Putzmeister Ag Pump for chick material, comprises IC engine drive and at least one hydraulic pump of reversible type

Also Published As

Publication number Publication date
ES2316137T3 (en) 2009-04-01
UA81964C2 (en) 2008-02-25
JP2007530854A (en) 2007-11-01
DE502005005923D1 (en) 2008-12-18
EP1906012B1 (en) 2008-11-05
EP1906012A1 (en) 2008-04-02
ATE395512T1 (en) 2008-05-15
WO2005093252A1 (en) 2005-10-06
CN1788158A (en) 2006-06-14
US20070196219A1 (en) 2007-08-23
EP1727980A1 (en) 2006-12-06
KR20060127382A (en) 2006-12-12
CN100595436C (en) 2010-03-24
EA200600261A1 (en) 2006-06-30
JP2011153626A (en) 2011-08-11
KR101187523B1 (en) 2012-10-02
US7611331B2 (en) 2009-11-03
JP5028255B2 (en) 2012-09-19
DE502005004119D1 (en) 2008-06-26
DE102004015415A1 (en) 2005-10-13
ES2306109T3 (en) 2008-11-01
EA007369B1 (en) 2006-10-27
ATE413529T1 (en) 2008-11-15

Similar Documents

Publication Publication Date Title
EP1727980B1 (en) Device and method for controlling a two-cylinder thick matter pump
EP1727981B1 (en) Device and method for controlling a thick matter pump
EP0861375B1 (en) Process and device for controlling a two-cylinder thick medium pump
DE10036202A1 (en) Slurry pump
WO2005093251A1 (en) Device and method for controlling a thick matter pump
DE102008045524A1 (en) Method for the autonomous control of a chemical injection system for oil and gas wells
CH634129A5 (en) DIAPHRAGM PUMP.
EP0465474B1 (en) Control arrangement for a two-cylinder pump for thick materials
EP2895743B1 (en) Device for the drive control of a two-cylinder thick matter pump
DE102005008217A1 (en) Hydraulic drive for two-cylinder thick matter pumps, has main pump, and blocking valve to block rinsing oil flow and to release oil flow after time delay, while diverting oil flow from low pressure side of hydraulic circuit into oil tank
EP0562398B1 (en) Pump for viscous material
EP0402390B1 (en) Control arrangement for two-cylinder pumps for viscous liquids
EP2799712A2 (en) Viscous material pump
WO1990006444A1 (en) Process and device for control of a twin-cylinder thick matter pump
DE3030005C2 (en) Hydraulic drive for a two-cylinder concrete pump
DE3103942A1 (en) Blockage indicator and device for the automatic release of a blockage especially in concrete pumps
EP1332288B1 (en) Method for controlling a pump arrangement consisting of two hydraulically driven plunger piston pumps
DE102004025910B4 (en) Drive device for a two-cylinder high-pressure pump and method for operating the same
WO2019224244A1 (en) Apparatus for conveying thick matter
DE3346820A1 (en) Hydrostatic drive for a concrete piston pump
EP0838589A2 (en) Method for automatic compensation of hydraulic drive fluid loss, a leakage compensation circuit and double piston pump comprising said circuit
DE29607989U1 (en) Two-cylinder slurry pump
DE3030004A1 (en) Concrete pump with hydraulic drive - has regulated non-return valves to prevent concrete pressure forcing pistons back when pump stops
DE29706923U1 (en) Thick matter piston pump

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20051013

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20070213

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PUTZMEISTER CONCRETE PUMPS GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502005004119

Country of ref document: DE

Date of ref document: 20080626

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2306109

Country of ref document: ES

Kind code of ref document: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080914

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080814

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081014

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080814

BERE Be: lapsed

Owner name: PUTZMEISTER CONCRETE PUMPS G.M.B.H.

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080815

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20110113 AND 20110119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090318

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: PUTZMEISTER ENGINEERING GMBH

Effective date: 20110610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081115

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20130314

Year of fee payment: 9

Ref country code: GB

Payment date: 20130321

Year of fee payment: 9

Ref country code: FR

Payment date: 20130408

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140318

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20141128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140318

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140331

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140319

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20210323

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20210312

Year of fee payment: 17

Ref country code: DE

Payment date: 20210324

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005004119

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220318