DE102020200261A1 - Method for operating a thick matter pump and thick matter pump - Google Patents

Abstract

The invention relates to a method for operating a thick matter pump (1) and a thick matter pump (1).

Description

AREA OF APPLICATION AND STATE OF THE ART

The invention relates to a method for operating a thick matter pump and a thick matter pump.

TASK AND SOLUTION

The object of the invention is to provide a method for operating a thick matter pump and a thick matter pump, each of which has improved properties.

The invention solves this problem by providing a method with the features of claim 1 and a thick matter pump with the features of claim 15. Advantageous further developments and / or refinements of the invention are described in the dependent claims.

The, in particular automatic, method according to the invention is designed or configured for, in particular automatically, operating a thick matter pump. The thick matter pump comprises or has a thick matter delivery system and a hydraulic drive system. The thick matter conveying system is designed or configured for conveying thick matter with a variably adjustable conveying volume flow, in particular conveying volume flow value. The hydraulic drive system comprises or has for driving the thick matter delivery system a, in particular common, hydraulic circuit having or comprising a hydraulic fluid, a variably operable first drive pump and a variably operable second drive pump. The first drive pump for variable operation with at least one variably adjustable first pump parameter, in particular pump parameter value, and the second drive pump for variable operation independent of the first pump parameter with at least one variably adjustable second pump parameter, pump parameter value, for, in particular, direct, generation of a variably adjustable one Total drive volume flow, in particular total drive volume flow value, or total drive volume flow of the hydraulic fluid in the, in particular the same, hydraulic circuit formed or configured. The method comprises or has the following steps: determining, in particular automatically determining, a total drive volume flow setpoint for the total drive volume flow. Determining, in particular automatically determining, a first parameter setpoint for the first pump parameter and a second parameter setpoint for the second pump parameter as a function of, in particular at least, the determined total drive volume flow setpoint. The first parameter setpoint and the second parameter setpoint are different from one another if the determined total drive volume flow setpoint is in at least one total drive volume flow setpoint range from a set of possible total drive volume flow setpoints. Conveying the thick matter with the delivery volume flow with a delivery volume flow setpoint by generating the total drive volume flow with the determined total drive volume flow setpoint by means of, in particular automatically, setting the first pump parameter to the determined first parameter setpoint and the second pump parameter to the determined second parameter setpoint.

This enables, in particular, the first parameter setpoint and the second parameter setpoint to be different from one another to operate the thick matter pump more optimally, in particular in contrast to a method not according to the invention for operating a thick matter pump, the first parameter setpoint and the second parameter setpoint being the same for all possible total drive volume flow setpoints.

In particular, the at least one total drive volume flow setpoint range with the first parameter setpoint and the second parameter setpoint can have or comprise at least the one total drive volume flow setpoint different from one another. In particular, the at least one total drive volume flow setpoint range with the first parameter setpoint and the second parameter setpoint can differ from one another at a minimum of 20 percent (%), in particular a minimum of 30%, in particular a minimum of 40%, and / or a maximum of 100% of the amount of possible total drive volume flow setpoints. Additionally or alternatively, the first parameter setpoint and the second parameter setpoint can be the same if the total drive volume flow setpoint determined is in at least one other total drive volume flow setpoint range from the set of possible total drive volume flow setpoints. Furthermore, it does not need to be determined additionally or alternatively that or whether the determined total drive volume flow setpoint value is in the at least one total drive volume flow setpoint range from the set of possible total drive volume flow setpoints.

The first pump parameter or the first parameter setpoint and the second pump parameter or the second parameter setpoint can be comparable or of the same type or of the same type or the same unit, in particular the unit of measurement.

The values, in particular setpoint values, can each be in a, in particular absolute, unit of measurement or a relative unit, in particular in%, in particular limited by a minimum value of 0% and a maximum value of 100%.

Variably adjustable can be called adjustable or changeable and / or variable setting can be called adjusting or changing and / or variably operated drive pump can be referred to as a variable displacement pump. Additionally or alternatively, variably adjustable to at least three different values, in particular continuously adjustable, and / or variable setting can mean setting to one of at least three different values, in particular continuously variable. Furthermore, additionally or alternatively, in the event of a change in the total drive volume flow setpoint, the first parameter setpoint and / or the second parameter setpoint can be changed or adjusted or set differently.

The total drive volume flow setpoint can be specified by a user or an operator of the thick matter pump.

The total drive volume flow of the hydraulic fluid can be generated in a drive pressure section, in particular a drive high pressure section, of the hydraulic circuit. Additionally or alternatively, the first drive pump and the second drive pump can be coupled to one another.

The hydraulic fluid can comprise, in particular be, oil.

The thick matter pump can be a building material pump. Additionally or alternatively, the thick matter conveying system can be designed for conveying thick matter in the form of building material. Building material can refer to mortar, cement, screed, concrete and / or plaster. In addition or as an alternative, thick matter can also refer to sludge.

In a further development of the invention, the method comprises or has the step of: determining, in particular automatically determining, in particular recording, the delivery volume flow setpoint value for the delivery volume flow. The method includes: determining the total drive volume flow setpoint as a function of the determined delivery volume flow setpoint. In particular, the delivery volume flow setpoint can be specified by the user of the thick matter pump.

In a further development of the invention, the method comprises or has the step of: detecting, in particular automatically detecting, an actual drive pressure value of a drive pressure, in particular a high drive pressure, of the hydraulic fluid in the hydraulic circuit. The drive pressure actual value of the drive pressure is set as a function of a delivery pressure actual value of a delivery pressure of the thick matter during delivery or during delivery. The method includes: determining the first parameter setpoint and the second parameter setpoint as a function of the actual drive pressure value detected. This, in particular the determination of the first parameter setpoint and the second parameter setpoint as a function of the detected actual drive pressure value, enables the thick matter pump to be operated even more optimally, in particular in contrast to a method not according to the invention for operating a thick matter pump, where the first parameter setpoint and the second parameter setpoint are not in Can be determined as a function of an actual drive pressure value. In particular, the actual delivery pressure value can be set as a function of a consistency of the thick matter and / or a boom position of a placing boom, if present, of the thick matter pump during conveying, in particular and can change during or during conveying. Additionally or alternatively, the hydraulic drive system, in particular the first drive pump and the second drive pump, can be designed or designed in such a way that the drive pressure actual value can be set. Furthermore, additionally or alternatively, when the drive pressure actual value changes, the first parameter setpoint and / or the second parameter setpoint can be changed or adjusted or set differently. Furthermore, additionally or alternatively, the drive pressure can be in a drive pressure section, in particular the drive high pressure can be in a drive high pressure section of the hydraulic circuit.

In a further development of the invention, the thick matter pump comprises or has at least, in particular only, one, in particular single, drive motor. The at least one drive motor is designed or configured to rotate the first drive pump and the second drive pump to generate the total drive volume flow. The method includes: conveying the thick matter by rotating the first drive pump and the second drive pump by means of the at least one drive motor.

In a development of the invention, the first drive pump is designed or configured for variable rotation with the first pump parameter in the form of a variably adjustable first pump speed and the second drive pump for variable rotation independent of the first pump speed with the second pump parameter in the form of a variably adjustable second pump speed . In particular, the first parameter setpoint in the form of a first pump speed setpoint and the second parameter setpoint in the form of a second pump speed setpoint are different from one another if the total drive volume flow setpoint determined is in the at least one Total drive volume flow setpoint range. Additionally or alternatively, the method has: Conveying the thick matter by setting the first pump speed to the determined first pump speed setpoint and the second pump speed to the determined second pump speed setpoint. Furthermore, additionally or alternatively, the thick matter pump can have at least one variably adjustable gear, wherein the at least one variably adjustable gear can connect the, in particular single, drive motor to the first drive pump and / or the second drive pump for rotation. This can enable the first pump speed and the second pump speed to be independent of one another.

In one embodiment of the invention, the thick matter pump comprises or has a variably operable first drive motor and a second drive motor that can be variably operated independently of the first drive motor. The first drive motor is designed or configured to variably rotate the first drive pump and the second drive motor to variably rotate the second drive pump. This makes it possible that the thick matter pump does not need to have a variably adjustable gear. In particular, the first drive motor can be designed for variably setting its first engine speed and / or the second drive motor for variably setting its second engine speed, in particular independently of the first engine speed. Additionally or alternatively, the first drive motor does not need to be designed to variably rotate the second drive pump and / or the second drive motor does not need to be configured to variably rotate the first drive pump.

In one embodiment of the invention, the first drive motor and the second drive motor each comprise or have an electric drive motor. In particular, the first drive motor and the second drive motor are each an electric drive motor. In particular, the electric drive motor can be a synchronous motor, in particular with an associated frequency converter of the thick matter pump.

In one embodiment of the invention, the, in particular the only, drive motor comprises or has an internal combustion drive motor. In particular, the, in particular the only, drive motor is an internal combustion drive motor. In particular, the internal combustion drive motor can have, in particular be, a diesel drive motor.

In a further development of the invention, the first drive pump is in the form of a first axial piston pump or comprises a variably adjustable first sliding washer or swashplate for variably setting the first pump parameter in the form of a first pivot angle of the first sliding washer and the second drive pump is in the form of a second axial piston pump or comprising a variably adjustable second sliding washer or swashplate for the variable setting of the second pump parameter in the form of a second pivoting angle of the second sliding washer, independently of the first pivoting angle. This enables the thick matter pump to have only a single drive motor and / or does not need to have a variably adjustable gear. In particular, the first drive pump and the second drive pump can be designed to rotate, in particular variably, with a fixed or non-variably adjustable pump speed ratio, in particular an identical, in particular variably adjustable, pump speed. Additionally or alternatively, the first parameter setpoint in the form of a first swivel angle setpoint and the second parameter setpoint in the form of a second swivel angle setpoint differ from one another if the total drive volume flow setpoint determined is in the at least one total drive volume flow setpoint range. The method further additionally or alternatively comprises: conveying the thick matter by setting the first swivel angle to the determined first swivel angle setpoint and the second swivel angle to the ascertained second swivel angle setpoint. Furthermore, additionally or alternatively, the method can have: determining the first parameter setpoint in the form of the first swivel angle setpoint and the second parameter setpoint in the form of the second swivel angle setpoint as a function of an engine speed value, in particular an actual engine speed value, of the drive motor.

In one embodiment of the invention, the, in particular the only, drive motor is designed or configured for the variable setting of its motor speed. The method comprises or has the step of: determining, in particular automatically determining, an engine speed setpoint for the engine speed as a function of the determined total drive volume flow setpoint, in particular and the detected actual drive pressure value, if any. The method has: Conveying the thick matter by means of, in particular automatically, setting the engine speed to the determined engine speed setpoint.

In one embodiment of the invention with increasing total drive volume flow setpoint in a low total drive volume flow setpoint range, a first swivel angle setpoint for the first swivel angle increases, in particular from a first swivel angle minimum value, in particular zero, to a first Swivel angle maximum value and a second swivel angle setpoint for the second swivel angle is constant, in particular a second swivel angle minimum value, in particular zero, and in a higher total drive volume flow setpoint range the second swivel angle setpoint increases, in particular from the second swivel angle minimum value, in particular zero, to a second swivel angle maximum value, in particular and If the first swivel angle setpoint is the first swivel angle maximum value and the second swivel angle setpoint is the second swivel angle maximum value, in an even higher total drive volume flow setpoint range, the motor speed setpoint increases from a motor speed minimum value, in particular greater than zero, to a motor speed maximum value. This enables maximum efficiency of the hydraulic drive system. In particular, in the low total drive volume flow setpoint range and / or the higher total drive volume flow setpoint range, the motor speed setpoint value can be constant, in particular the motor speed minimum value, in particular greater than zero. Additionally or alternatively, the first swivel angle minimum value and the second swivel angle minimum value can be the same and / or the first swivel angle maximum value and the second swivel angle maximum value can be the same. Furthermore, additionally or alternatively, the second axial piston pump can generate the same total drive volume flow value of the total drive volume flow at the second swivel angle maximum value as the first axial piston pump at the first swivel angle maximum value, in particular at the same pump speed.

In one embodiment of the invention, the second axial piston pump, in particular alone, generates a higher total drive volume flow value of the total drive volume flow than the first axial piston pump, in particular alone, in the case of a second maximum pivot angle value of the second pivot angle, in particular with the same pump speed. With an increasing total drive volume flow setpoint in a low total drive volume flow setpoint range, a first swivel angle setpoint for the first swivel angle is higher than a second swivel angle setpoint for the second swivel angle up to the first swivel angle maximum value; in a higher total drive volume flow setpoint range, the second swivel angle setpoint is higher than the first swivel angle setpoint up to second swivel angle maximum value, in particular and if the first swivel angle setpoint is the first swivel angle maximum value and the second swivel angle setpoint is the second swivel angle maximum value, in an even higher total drive volume flow setpoint range, the motor speed setpoint increases from a motor speed minimum value to a motor speed maximum value. This enables maximum efficiency of the hydraulic drive system. In other words: the second axial piston pump can have a higher maximum displacement than the first axial piston pump. In particular, in the low total drive volume flow setpoint range and / or the higher total drive volume flow setpoint range, the motor speed setpoint value can be constant, in particular the motor speed minimum value, in particular greater than zero. Additionally or alternatively, the first maximum swivel angle value and the second maximum swivel angle value can be the same.

In a further development, in particular an embodiment of the invention, the method has: Determination of the first parameter setpoint and the second parameter setpoint, in particular and the engine speed setpoint, if any, on the basis of an optimization criterion. The optimization criterion is a maximum efficiency of the thick matter pump, in particular a maximum efficiency of the hydraulic drive system, in particular a maximum efficiency of the first drive pump and / or a maximum efficiency of the second drive pump, or a minimum energy consumption, in particular a minimum fuel consumption, and / or a maximum efficiency of the at least one drive motor. In particular, the optimization criterion can be specified by the user of the thick matter pump.

In a further development of the invention, the first drive pump and the second drive pump are arranged in parallel in the hydraulic circuit. Additionally or alternatively, the hydraulic drive system comprises or has, in particular at least, one variably movable drive piston in the hydraulic circuit for driving the thick matter delivery system. The first drive pump and the second drive pump are designed or configured to generate the variably adjustable total drive volume flow of the hydraulic fluid in the hydraulic circuit for variably moving the, in particular at least one, drive piston. The method has: Conveying the thick matter by means of variable movement of the drive piston. In particular, the first parameter setpoint and the second parameter setpoint can differ from one another during or during a stroke, in particular at least 50% percent of a length and / or a duration of the stroke, in particular and not just for a change in a direction of movement of the drive piston.

The thick matter pump according to the invention has a, in particular the, thick matter delivery system, a, in particular the hydraulic drive system and an, in particular electrical, determination device. The thick matter conveying system is designed for conveying thick matter, in particular the thick matter, with a, in particular the, variably adjustable conveying volume flow. The hydraulic drive system has for driving the thick matter delivery system one, in particular the hydraulic circuit having one, in particular the hydraulic fluid, one, in particular the variably operable first drive pump and one, in particular the variably operable second drive pump. The first drive pump for variable operation with at least one, in particular the at least one, variably adjustable first pump parameter and the second drive pump for variable operation independent of the first pump parameter with at least one, in particular the at least one, variably adjustable second pump parameter for generating a, in particular of the variably adjustable total drive volume flow of the hydraulic fluid in the hydraulic circuit. The determination device is designed or configured to, in particular automatically, determine one, in particular the, total drive volume flow setpoint for the total drive volume flow. Furthermore, the determination device is designed or configured to, in particular automatically, determine one, in particular the first parameter setpoint for the first pump parameter and one, in particular the second parameter setpoint for the second pump parameter, depending on the determined total drive volume flow setpoint. The first parameter setpoint and the second parameter setpoint are different from one another if the determined total drive volume flow setpoint is in at least one, in particular the at least one, total drive volume flow setpoint range from one, in particular, the set of possible total drive volume flow setpoints. The thick matter pump is designed or designed to convey the thick matter with the conveyed volume flow with a, in particular the, conveyed volume flow setpoint by generating the total drive volume flow with the determined total drive volume flow setpoint by means of, in particular automatically, setting the first pump parameter to the determined first parameter setpoint and the second pump parameter to the determined second parameter setpoint configured.

The thick matter pump can provide the same advantages as the method described above.

In particular, the thick matter pump can be designed or configured to carry out the method described above.

The determination device can have a processor and / or a memory.

Figure list

• 1 einen schematischen Schaltplan einer erfindungsgemäßen Dickstoffpumpe aufweisend nur einen einzigen Antriebsmotor,
• 2 einen schematischen Schaltplan eines Ausschnitts der erfindungsgemäßen Dickstoffpumpe aufweisend einen ersten Antriebsmotor und einen zweiten Antriebsmotor,
• 3 ein Ablaufdiagramm eines erfindungsgemäßen Verfahrens zum Betreiben der erfindungsgemäßen Dickstoffpumpe mittels eines Look-up-tables,
• 4 ein Ablaufdiagramm zum Ermitteln des Look-up-tables der 3,
• 5 ein Ablaufdiagramm des erfindungsgemäßen Verfahrens zum Betreiben der erfindungsgemäßen Dickstoffpumpe mittels Online-Ermitteln,
• 6 einen Graphen eines ersten Parametersollwerts in Form eines ersten Schwenkwinkelsollwerts, eines zweiten Parametersollwerts in Form eines zweiten Schwenkwinkelsollwerts und eines Motordrehzahlsollwerts über einem erhöhenden Gesamtantriebsvolumenstromsollwert des erfindungsgemäßen Verfahrens, und
• 7 einen weiteren Graphen eines ersten Parametersollwerts in Form eines ersten Schwenkwinkelsollwerts, eines zweiten Parametersollwerts in Form eines zweiten Schwenkwinkelsollwerts und eines Motordrehzahlsollwerts über einem erhöhenden Gesamtantriebsvolumenstromsollwert des erfindungsgemäßen Verfahrens.

Further advantages and aspects of the invention emerge from the claims and from the following description of preferred exemplary embodiments of the invention, which are explained below with reference to the figures. Show:

• 1 a schematic circuit diagram of a thick matter pump according to the invention having only a single drive motor,
• 2 a schematic circuit diagram of a section of the thick matter pump according to the invention having a first drive motor and a second drive motor,
• 3 a flow chart of a method according to the invention for operating the thick matter pump according to the invention by means of a look-up table,
• 4th a flow chart for determining the look-up table of the 3 ,
• 5 a flowchart of the method according to the invention for operating the thick matter pump according to the invention by means of online determination,
• 6th a graph of a first parameter setpoint in the form of a first swivel angle setpoint, a second parameter setpoint in the form of a second swivel angle setpoint and a motor speed setpoint over an increasing total drive volume flow setpoint of the method according to the invention, and
• 7th a further graph of a first parameter setpoint in the form of a first swivel angle setpoint, a second parameter setpoint in the form of a second swivel angle setpoint and a motor speed setpoint over an increasing total drive volume flow setpoint of the method according to the invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

1 and 2 show a thick matter pump according to the invention 1 . The thick matter pump 1 has a thick matter conveyor system 2 , a hydraulic drive system 3 and a determination device 50 on. The thick matter conveyor system 2 is for pumping thick matter DS with a variably adjustable flow rate QF educated. The hydraulic drive system 3 instructs to drive the thick matter conveyor system 2 a hydraulic circuit 4th comprising a hydraulic fluid HF , a variably operable first drive pump 5 and one variable operable second drive pump 7th on. Here are the first drive pump 5 for variable operation with at least one variably adjustable first pump parameter P5 and the second drive pump 7th for the first pump parameter P5 independent variable operation with at least one variably adjustable second pump parameter P7 for generating a variably adjustable total drive volume flow QA the hydraulic fluid HF in the hydraulic circuit 4th educated. The investigative facility 50 is used to determine a total drive volume flow rate setpoint QAS for the total drive volume flow rate QA trained as in 3 and 5 shown. Furthermore, is the investigation facility 50 to determine a first parameter setpoint P5S for the first pump parameter P5 and a second parameter setpoint P7S for the second pump parameter P7 formed as a function of the determined total drive volume flow setpoint QAS. The first parameter setpoint P5S and the second parameter setpoint P7S are different from one another if the determined total drive volume flow setpoint value QAS in at least one total drive volume flow setpoint range QASB1, QASB2, QASB3, QASB1 'from a set 0 , QASB1, QASB2, QASB3, QASB4, QASB1 ', QASB2', QASB3 'of possible total drive volume flow setpoints QAS is, as in 6th and 7th shown. The thick matter pump 1 is for pumping the thick matter DS with the delivery volume flow QF with a delivery volume flow setpoint QFS by generating the total drive volume flow QA with the determined total drive volume flow setpoint QAS by setting the first pump parameter P5 to the determined first parameter setpoint P5S and the second pump parameter P7 to the determined second parameter setpoint P7S educated.

3 and 5 show a method according to the invention for operating the thick matter pump 1 . The thick matter pump 1 shows the thick matter conveyor system 2 and the hydraulic drive system 3 on. The thick matter conveyor system 2 is for pumping the thick matter DS with the variably adjustable flow rate QF educated. The hydraulic drive system 3 instructs to drive the thick matter conveyor system 2 the hydraulic circuit 4th having the hydraulic fluid HF , the variably operable first drive pump 5 and the variably operable second drive pump 7th on. Here are the first drive pump 5 for variable operation with the at least one variably adjustable first pump parameter P5 and the second drive pump 7th for the first pump parameter P5 independent variable operation with the at least one variably adjustable second pump parameter P7 to generate the variably adjustable total drive volume flow QA the hydraulic fluid HF in the hydraulic circuit 4th educated. The method has the following steps: Determining the total drive volume flow setpoint QAS for the total drive volume flow QA , in particular by means of the determination device 50 . Determining the first parameter setpoint P5S for the first pump parameter P5 and the second parameter setpoint P7S for the second pump parameter P7 as a function of the determined total drive volume flow setpoint QAS, in particular by means of the determination device 50 .

Here are the first parameter setpoint P5S and the second parameter setpoint P7S different from each other if the total drive volume flow setpoint QAS determined in the at least one total drive volume flow setpoint range QASB1, QASB2, QASB3, QASB1 'from the set 0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2 ', QASBAS', QASBAS is of possible total drive volume flow. Conveying the thick matter DS with the delivery volume flow QF with the delivery volume flow setpoint QFS, in particular by means of the thick matter delivery system 2 , in particular by driving the thick matter conveyor system 2 by means of the hydraulic drive system 3 , by generating the total drive volume flow QA with the determined total drive volume flow setpoint QAS by setting the first pump parameter P5 to the determined first parameter setpoint P5S and the second pump parameter P7 to the determined second parameter setpoint P7S , in particular and by means of operating the first drive pump 5 and the second drive pump 7th , in particular by means of the thick matter pump 1 .

In the embodiment shown, the hydraulic drive system 3 only the variably operable first drive pump 5 and the variably operable second drive pump 7th on. In alternative exemplary embodiments, the hydraulic drive system can have at least three, in particular at least four, variably operable drive pumps.

In detail are the first drive pump 5 and the second drive pump 7th in the hydraulic circuit 4th arranged in parallel.

In addition, the hydraulic drive system 3 a variably movable drive piston 11a , 11b in the hydraulic circuit 4th to drive the thick matter conveyor system 2 on. The first propulsion pump 5 and the second drive pump 7th are for generating the variably adjustable total drive volume flow QA the hydraulic fluid HF in the hydraulic circuit 4th for variable movement of the drive piston 11a , 11b educated. The method has: Conveying the thick matter DS by means of variable movement of the drive piston 11a , 11b .

In the embodiment shown, the hydraulic drive system 3 exactly two variably movable drive pistons 11a , 11b on. In alternative exemplary embodiments, the hydraulic drive system can have only a single variably movable drive piston or at least three, in particular at least four, variably movable drive pistons.

In particular, the hydraulic drive system 3 one, in the embodiment shown two, drive cylinder 10a , 10b on. The drive piston 11a , 11b is in the, in particular assigned, drive cylinder 10a , 10b arranged.

Furthermore, the hydraulic circuit 4th a swing pipe 60 on.

The first propulsion pump 5 and the second drive pump 7th and the two drive cylinders 10a , 10b form by means of the swing line 60 a closed drive circuit for the hydraulic fluid HF .

Also are the two drive pistons 11a , 11b by means of the swing line 60 coupled, especially in phase opposition.

Next have the first drive pump 5 and the second drive pump 7th or the closed drive circuit has a high pressure side and a low pressure side, in particular which are cyclically exchanged with one another, in particular when or during the operation of the thick matter pump 1 .

In addition, the thick matter conveyor system 2 , in particular at least one delivery cylinder 12a , 12b and, in particular, at least one variably movable delivery piston 13a , 13b to convey the thick matter DS with the variably adjustable flow rate QF on. The delivery piston 13a , 13b is in the, in particular assigned, delivery cylinder 12a , 12b arranged. The method has: Conveying the thick matter DS by means of variable movement of the delivery piston 13a , 13b .

In particular, the thick matter pump 1 , in particular at least one piston rod 14a , 14b on. The piston rod 14a , 14b is on the, in particular assigned, drive piston 11a , 11b for the coupling of motion with or transmission of motion to the, in particular assigned, delivery piston 13a , 13b attached.

Furthermore, the method has the following step: determining the delivery volume flow setpoint QFS for the delivery volume flow QF , in particular by means of the determination device 50 . The method includes: determining the total drive volume flow rate setpoint QAS as a function of the determined delivery volume flow rate setpoint QFS.

In particular, the thick matter pump 1 a user-operated control panel 51 for specifying, in particular selecting, the delivery volume flow rate setpoint QFS by a user of the thick matter pump 1 on.

In addition, the method has the following step: detecting an actual drive pressure value pAI of a drive pressure pA, in particular a high drive pressure pH, of the hydraulic fluid HF in the hydraulic circuit 4th , in particular by means of an, in particular electrical, sensor 40 that of the thick matter pump 1 . The drive pressure actual value pAI of the drive pressure pA is a function of a delivery pressure actual value pFI of a delivery pressure pF of the thick matter DS when conveying a. The method includes: determining the first parameter setpoint P5S and the second parameter setpoint P7S depending on the recorded actual drive pressure value pAI.

Next, the thick matter pump 1 at least one drive motor 9 , 95 , 97 on. The at least one drive motor 9 , 95 , 97 is for turning the first drive pump 5 and the second drive pump 7th to generate the total drive volume flow QA educated. The method has: Conveying the thick matter DS by turning the first drive pump 5 and the second drive pump 7th by means of the at least one drive motor 9 , 95 , 97 .

In addition, are the first drive pump 5 for variable rotation with the first pump parameter P5 in the form of a variably adjustable first pump speed n5 and the second drive pump 7th for variable rotation independent of the first pump speed n5 with the second pump parameter P7 in the form of a variably adjustable second pump speed n7, as in FIG 2 shown.

In detail, in 2 the thick matter pump 1 a variably operable first drive motor 95 and one of the first drive motor 95 independently variably operable second drive motor 97 on. Here are the first drive motor 95 for variable rotation of the first drive pump 5 and the second drive motor 97 for variable rotation of the second drive pump 7th educated.

In particular, the first drive motor 95 for the variable setting of its first engine speed n95 and the second drive motor 97 for the variable setting of its second engine speed n97 educated.

Furthermore, the first drive motor 95 and the second drive motor 97 an electric drive motor each 105 , 107 on. In particular, the first drive motor 95 and the second Drive motor 97 an electric drive motor each 105 , 107 .

In 1 instructs the thick matter pump 1 only a single drive motor 9 on.

In detail, in 1 the drive motor 9 an internal combustion engine 10 on. In particular is the drive motor 9 an internal combustion engine 10 .

In addition, especially in 1 and 2 , the first propulsion pump 5 in the form of a first axial piston pump 5 ' having a variably adjustable first sliding washer 6th for the variable setting of the first pump parameter P5 in the form of a first pivot angle W6 the first sliding washer 6th and the second drive pump 7th in the form of a second axial piston pump 7 ' having a variably adjustable second sliding washer 8th for the first pivot angle W6 independent variable setting of the second pump parameter P7 in the form of a second pivot angle W8 the second sliding washer 8th educated.

In particular, the hydraulic drive system 3 at least one, in particular electrically adjustable, actuator. The at least one actuator is for variably setting the first pivot angle W6 and the second pivot angle W8 educated.

In detail is the, in particular the only, drive motor 9 for variable setting of its engine speed n9 educated. The method has the step of: determining a nominal engine speed value n9S for the engine speed n9 as a function of the determined total drive volume flow setpoint QAS, in particular and the recorded drive pressure actual value pAI, as in FIG 3 and 5 to 7th shown, in particular by means of the determination device 50 . The method has: Conveying the thick matter DS by adjusting the engine speed n9 on the determined engine speed setpoint n9S , in particular by means of the thick matter pump 1 .

Furthermore, with increasing total drive volume flow setpoint value QAS in a low total drive volume flow setpoint range QASB1, QASB1 ', a first swivel angle setpoint value W6S increases for the first swivel angle W6 in particular from a first swivel angle minimum value W6min 0% to a first swivel angle maximum value W6max, in particular 100%, and a second swivel angle setpoint value W8S for the second swivel angle W8 is constant, in particular a second minimum swivel angle value W8min 0%, as in FIG 6th and 7th shown. As the total drive volume flow setpoint QAS increases in a higher total drive volume flow setpoint range QASB2, QASB2 ', the second swivel angle setpoint W8S increases, in particular from the second swivel angle minimum value W8min 0%, in 6th to 80 % and from 80% and in 7th to 50 % and from 50% up to a second swivel angle maximum value W8max, in particular 100%.

In particular and if the first swivel angle setpoint W6S is the first swivel angle maximum value W6max and the second swivel angle setpoint W8S is the second swivel angle maximum value W8max, the motor speed setpoint increases with increasing total drive volume flow setpoint QAS in an even higher total drive volume flow setpoint range QASB4, QASB3 ' n9S differs from an engine speed minimum value n9min, in 6th 70% and in 7th 60%, up to a maximum engine speed value n9max, in particular 100%.

In addition, generated for the in 6th The graph shown is the second axial piston pump 7th at the second swivel angle maximum value W8max of the second swivel angle W8 a higher total drive volume flow value QAW of the total drive volume flow QA than the first axial piston pump 5 at the first swivel angle maximum value W6max of the first swivel angle W6 . As the total drive volume flow setpoint QAS increases in the low total drive volume flow setpoint range QASB1, the first swivel angle setpoint is W6S for the first swivel angle W6 higher than the second swivel angle setpoint W8S for the second swivel angle W8 up to the first swivel angle maximum value W6max. As the total drive volume flow setpoint QAS increases in the higher total drive volume flow setpoint range QASB2, the second swivel angle setpoint W8S is higher than the first swivel angle setpoint W6S up to the second swivel angle maximum value W8max.

For the in 7th The graph shown generates the second axial piston pump 7th at the second swivel angle maximum value W8max, the same total drive volume flow value QAW as the first axial piston pump 5 at the first swivel angle maximum value W6max.

In particular, in 6th the low total drive volume flow setpoint range QASB1 greater than 0% to 30% of a total drive volume flow maximum value QAmax. The higher total drive volume flow setpoint range QASB2 is greater than 30% to 40% of the total drive volume flow maximum value QAmax. The even higher total drive volume flow setpoint range QASB4 is greater than 70% to 100% of the total drive volume flow maximum value QAmax. In addition, a total drive volume flow setpoint range is 0 lower than the lower total drive volume flow setpoint range QASB1 0% and a total drive volume flow setpoint range QASB3 between the higher total drive volume flow setpoint range QASB2 and the even higher total drive volume flow setpoint range QASB4 is greater than 40% to 70%.

In 7th the low total drive volume flow setpoint range QASB1 'is greater than 0% to 40% of the total drive volume flow maximum value QAmax. The higher total drive volume flow setpoint range QASB2 'is greater than 40% to 80% of the total drive volume flow maximum value QAmax. The even higher total drive volume flow setpoint range QASB3 'is greater than 80% to 100% of the total drive volume flow maximum value QAmax. In addition, a total drive volume flow setpoint range 0 is lower than the low total drive volume flow setpoint range QASB1 0%.

Furthermore, as the total drive volume flow setpoint QAS increases in the higher total drive volume flow setpoint range QASB2, the first swivel angle setpoint value W6S is constant, in particular the first swivel angle minimum value W6min 0%, as in FIG 6th shown.

In addition, as the total drive volume flow setpoint QAS in the total drive volume flow setpoint range QASB3 increases, the first swivel angle setpoint value W6S increases, in particular from the first swivel angle minimum value W6min 0%, in particular up to 70% and from 70%, up to the first swivel angle maximum value W6max.

As the total drive volume flow setpoint QAS increases in the total drive volume flow setpoint range QASB3, the second swivel angle setpoint value W8S increases, in particular from 50%, up to the second swivel angle maximum value W8max.

In addition, as the total drive volume flow setpoint QAS increases in the higher total drive volume flow setpoint range QASB2 ', the first swivel angle setpoint W6S increases, in particular from 50%, up to the first swivel angle maximum value W6max, as in FIG 7th shown.

Thus are the first parameter setpoint P5S and the second parameter setpoint P7S different from each other if the determined total drive volume flow setpoint QAS is in the lower total drive volume flow setpoint range QASB1, QASB1 'and the higher total drive volume flow setpoint range QASB2, in particular and the total drive volume flow setpoint range QASB3.

In addition are the first parameter setpoint P5S and the second parameter setpoint P7S equal to each other if the total drive volume flow setpoint determined is in the total drive volume flow setpoint range 0, the higher total drive volume flow setpoint range QASB2 'and the even higher total drive volume flow setpoint range QASB4, QASB3'.

Furthermore, in the total drive volume flow setpoint range 0, the low total drive volume flow setpoint range QASB1, QASB1 ', the higher total drive volume flow setpoint range QASB2, QASB2' and the total drive volume flow setpoint range QASB3, the motor speed setpoint value n9S constant, especially the minimum engine speed value n9min.

The method also has: determining the first parameter setpoint P5S and the second parameter setpoint P7S , in particular and the engine speed setpoint n9S , using an optimization criterion OK, as in 3 to 5 shown. The optimization criterion OK is a maximum efficiency η1max of the thick matter pump 1 , in particular a maximum efficiency η2max of the hydraulic drive system 2 , in particular a maximum efficiency η5max of the first drive pump 5 and / or a maximum efficiency η7max of the second drive pump 7th , or a minimum energy consumption EV9, in particular a minimum fuel consumption KV9, and / or a maximum efficiency η9max of the at least one drive motor 9 , 95 , 97 .

In particular, the user-operated control panel is 51 for specifying, in particular selecting, the optimization criterion OK the user of the thick matter pump 1 educated.

In 3 become the first parameter setpoint P5S and the second parameter setpoint P7S , in particular and the engine speed setpoint n9S , determined by means of a look-up table or offline.

In detail, the look-up table is created by means of maps, in particular efficiency maps, of the first drive pump 5 and the second drive pump 7th , in particular and the at least one drive motor 9 , 95 , 97 , for the possible total drive volume flow setpoints QAS, in particular and possible drive pressure actual values pAI, determined, in particular calculated, as in 4th shown.

In 5 become the first parameter setpoint P5S and the second parameter setpoint P7S , in particular and the engine speed setpoint n9S , by means of, in particular, the characteristic maps of the first drive pump 5 and the second drive pump 7th , in particular and the at least one drive motor 9 , 95 , 97 , determined online, in particular calculated.

The determining device also has 50 with the first drive pump 5 and the second drive pump 7th , in particular by means of the at least one actuator, in particular and the control panel 51 , the sensor 40 , and the at least one drive motor 9 , 95 , 97 , an, in particular electrical, signal connection.

As the exemplary embodiments shown and explained above make clear, the invention provides an advantageous method for operating a thick matter pump and an advantageous thick matter pump, each of which has improved properties

Claims (15)

Method for operating a thick matter pump (1), - The thick matter pump (1) having: - A thick matter conveying system (2), the thick matter conveying system (2) being designed for conveying thick matter (DS) with a variably adjustable conveying volume flow (QF), and - A hydraulic drive system (3), the hydraulic drive system (3) for driving the thick matter delivery system (2) having: - A hydraulic circuit (4) having a hydraulic fluid (HF), - A variably operable first drive pump (5), and - a variably operable second drive pump (7), - The first drive pump (5) for variable operation with at least one variably adjustable first pump parameter (P5) and the second drive pump (7) for variable operation independent of the first pump parameter (P5) with at least one variably adjustable second pump parameter (P7) for Generating a variably adjustable total drive volume flow (QA) of the hydraulic fluid (HF) are formed in the hydraulic circuit (4), - wherein the method comprises the steps: - Determination of a total drive volume flow setpoint (QAS) for the total drive volume flow (QA), - Determination of a first parameter setpoint (P5S) for the first pump parameter (P5) and a second parameter setpoint (P7S) for the second pump parameter (P7) depending on the determined total drive volume flow setpoint (QAS), the first parameter setpoint (P5S) and the second parameter setpoint (P7S) are different from each other if the determined total drive volume flow setpoint (QAS) is in at least one total drive volume flow setpoint range (QASB1, QASB2, QASB3, QASB1 ') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB1', QASB2 ', QASB2', QASB2 ', QASB3 ') of possible total drive volume flow setpoints (QAS), and - Conveying the thick matter (DS) with the delivery volume flow (QF) with a delivery volume flow setpoint (QFS) by generating the total drive volume flow (QA) with the determined total drive volume flow setpoint (QAS) by setting the first pump parameter (P5) to the determined first parameter setpoint (P5S) and of the second pump parameter (P7) to the determined second parameter setpoint (P7S). Procedure according to Claim 1 - the method comprising the step of: determining, in particular recording, the delivery volume flow setpoint (QFS) for the delivery volume flow (QF), and - wherein the method comprises: determining the total drive volume flow setpoint (QAS) as a function of the determined delivery volume flow setpoint (QFS). Method according to one of the preceding claims, - the method comprising the step of: detecting an actual drive pressure value (pAI) of a drive pressure (pA), in particular a high drive pressure (pH), of the hydraulic fluid (HF) in the hydraulic circuit (4), the actual drive pressure value (pAI) of the drive pressure (pA) adjusts itself as a function of a delivery pressure actual value (pFI) of a delivery pressure (pF) of the thick matter (DS) during delivery, and - The method comprising: determining the first parameter setpoint (P5S) and the second parameter setpoint (P7S) as a function of the detected actual drive pressure value (pAI). Method according to one of the preceding claims, - The thick matter pump (1) having at least one drive motor (9, 95, 97), the at least one drive motor (9, 95, 97) for rotating the first drive pump (5) and the second drive pump (7) for generating the total drive volume flow (QA) is trained, and - wherein the method comprises: conveying the thick matter (DS) by rotating the first drive pump (5) and the second drive pump (7) by means of the at least one drive motor (9, 95, 97). Method according to one of the preceding claims, - wherein the first drive pump (5) for variable rotation with the first pump parameter (P5) in the form of a variably adjustable first pump speed (n5) and the second drive pump (7) for the first pump speed (n5) independent variable turning with the second Pump parameters (P7) are designed in the form of a variably adjustable second pump speed (n7). Procedure according to Claims 4 and 5 - wherein the thick matter pump (1) has a variably operable first drive motor (95) and a second drive motor (97) which can be variably operated independently of the first drive motor (95), the first drive motor (95) for variably rotating the first drive pump (5 ) and the second drive motor (97) are designed for the variable rotation of the second drive pump (7). Procedure according to Claim 6 - wherein the first drive motor (95) and the second drive motor (97) each have an electric drive motor (105, 107), in particular an electric drive motor (105, 107). Procedure according to Claim 4 or one of Claim 4 The dependent claim, - wherein the, in particular the only, drive motor (9) has an internal combustion drive motor (10), in particular is an internal combustion drive motor (10). Method according to one of the preceding claims, - The first drive pump (5) in the form of a first axial piston pump (5 ') having a variably adjustable first sliding washer (6) for variably setting the first pump parameter (P5) in the form of a first pivoting angle (W6) of the first sliding washer (6) and the second drive pump (7) in the form of a second axial piston pump (7 ') having a variably adjustable second sliding washer (8) for the variable setting of the second pump parameter (P7) in the form of a second pivot angle (W8) independent of the first pivot angle (W6) second sliding washer (8) are formed. Procedure according to Claims 4 and 9 , in particular and after Claim 3 - wherein the, in particular the only, drive motor (9) is designed for the variable setting of its motor speed (n9), - wherein the method comprises the step of: determining a motor speed setpoint (n9S) for the motor speed (n9) as a function of the determined total drive volume flow setpoint ( QAS), in particular and the detected actual drive pressure value (pAI), and - the method comprising: conveying the thick matter (DS) by setting the engine speed (n9) to the determined engine speed setpoint (n9S). Procedure according to Claim 9 or 10 , - with increasing total drive volume flow setpoint (QAS) in a low total drive volume flow setpoint range (QASB1, QASB1 ') a first swivel angle setpoint (W6S) for the first swivel angle (W6) increases up to a first swivel angle maximum value (W6max) and a second swivel angle setpoint (W8S ) is constant for the second swivel angle (W8), and in a higher total drive volume flow setpoint range (QASB2, QASB2 ') the second swivel angle setpoint (W8S) increases up to a second swivel angle maximum value (W8max), in particular and if the first swivel angle setpoint (W6S) the first swivel angle maximum value (W6max) and the second swivel angle setpoint (W8S) is the second swivel angle maximum value (W8max), in an even higher total drive volume flow setpoint range (QASB4, QASB3 ') the motor speed setpoint (n9S) varies from a motor speed minimum value (n9min) to Motor speed maximum value (n9max) increased. Method according to one of the Claims 9 to 11 - The second axial piston pump (7) at a second maximum swivel angle value (W8max) of the second swivel angle (W8) a higher total drive volume flow value (QAW) of the total drive volume flow (QA) than the first axial piston pump (5) at a first maximum swivel angle value (W6max) of the first swivel angle (W6) generated, and - with increasing total drive volume flow setpoint (QAS) in a low total drive volume flow setpoint range (QASB1) a first swivel angle setpoint (W6S) for the first swivel angle (W6) higher than a second swivel angle setpoint (W8S) for the second swivel angle (W8 ) up to the first swivel angle maximum value (W6max), in a higher total drive volume flow setpoint range (QASB2) the second swivel angle setpoint (W8S) is higher than the first swivel angle setpoint (W6S) up to the second swivel angle maximum value (W8max), in particular and if the first swivel angle setpoint (W6S) the first swivel angle maximum value (W 6max) and the second swivel angle setpoint (W8S) is the second swivel angle maximum value (W8max), in an even higher total drive volume flow setpoint range (QASB4) the motor speed setpoint (n9S) increases from a motor speed minimum value (n9min) to a motor speed maximum value (n9max). Method according to one of the preceding claims, in particular according to Claim 4 or one of Claim 4 dependent claim, in particular according to Claim 10 - The method comprising: determining the first parameter setpoint (P5S) and the second parameter setpoint (P7S), in particular and the engine speed setpoint (n9S), based on an optimization criterion (OK), the optimization criterion (OK) being a maximum efficiency (η1max) of the The thick matter pump (1) is, in particular, a maximum efficiency (η2max) of the hydraulic drive system (2) or a minimum energy consumption (EV9), in particular a minimum fuel consumption (KV9), and / or a maximum efficiency (η9max) of the at least one drive motor (9, 95, 97). Method according to one of the preceding claims, - wherein the first drive pump (5) and the second drive pump (7) are arranged in parallel in the hydraulic circuit (4), and / or - wherein the hydraulic drive system (3) has a variably movable drive piston (11a, 11b) in the hydraulic circuit (4) for driving the thick matter conveyor system (2), - wherein the first drive pump (5) and the second drive pump (7) are designed for generating the variably adjustable total drive volume flow (QA) of the hydraulic fluid (HF) in the hydraulic circuit (4) for the variable movement of the drive piston (11a, 11b), and - The method comprising: conveying the thick matter (DS) by means of variable movement of the drive piston (11a, 11b). Thick matter pump (1), the thick matter pump (1) having: - A thick matter conveying system (2), the thick matter conveying system (2) being designed for conveying thick matter (DS) with a variably adjustable conveying volume flow (QF), - A hydraulic drive system (3), the hydraulic drive system (3) for driving the thick matter delivery system (2) having: - A hydraulic circuit (4) having a hydraulic fluid (HF), - A variably operable first drive pump (5), and - a variably operable second drive pump (7), - The first drive pump (5) for variable operation with at least one variably adjustable first pump parameter (P5) and the second drive pump (7) for variable operation independent of the first pump parameter (P5) with at least one variably adjustable second pump parameter (P7) for Generating a variably adjustable total drive volume flow (QA) of the hydraulic fluid (HF) are formed in the hydraulic circuit (4), and - a determination device (50), wherein the determination device (50) - to determine a total drive volume flow setpoint (QAS) for the total drive volume flow (QA), and - To determine a first parameter setpoint (P5S) for the first pump parameter (P5) and a second parameter setpoint (P7S) for the second pump parameter (P7) as a function of the determined total drive volume flow setpoint (QAS), the first parameter setpoint (P5S) and the second Parameter setpoint (P7S) are different from each other if the total drive volume flow rate (QAS) determined is in at least one total drive volume flow rate range (QASB1, QASB2, QASB3, QASB1 ') from a set (0, QASB1, QASB2, QASB3, QASB4, QASB2', , QASB3 ') of possible total drive volume flow setpoints (QAS) is formed, and - wherein the thick matter pump (1) for conveying the thick matter (DS) with the delivery volume flow (QF) with a delivery volume flow setpoint (QFS) by generating the total drive volume flow (QA) with the determined total drive volume flow setpoint (QAS) by setting the first pump parameter (P5) to the parameter determined first parameter setpoint (P5S) and the second pump parameter (P7) is formed on the determined second parameter setpoint (P7S).

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