EP0922162B1 - Travelling thick matter pump - Google Patents

Travelling thick matter pump Download PDF

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Publication number
EP0922162B1
EP0922162B1 EP97931738A EP97931738A EP0922162B1 EP 0922162 B1 EP0922162 B1 EP 0922162B1 EP 97931738 A EP97931738 A EP 97931738A EP 97931738 A EP97931738 A EP 97931738A EP 0922162 B1 EP0922162 B1 EP 0922162B1
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EP
European Patent Office
Prior art keywords
pump
speed
thick matter
gear
matter pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97931738A
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German (de)
French (fr)
Other versions
EP0922162A1 (en
Inventor
Martin Mayer
Willi Ebinger
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
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Putzmeister AG
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Publication date
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Publication of EP0922162A1 publication Critical patent/EP0922162A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • 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
    • F04B2203/06—Motor parameters of internal combustion engines
    • F04B2203/0605—Rotational speed
    • 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
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/044—Settings of the rotational speed of the driving motor

Definitions

  • the invention relates to a mobile thick matter pump, in particular a concrete pump with a vehicle engine and a drive mechanism having a change gear, at least one with an output shaft of the change gear if necessary with the interposition of a transfer case detachable hydraulic pump for the drive and the control of the thick matter pump and a speed limiting device to set a maximum Motor speed during pump operation.
  • a transfer case is usually used for this purpose arranged in the cardan shaft of the vehicle, either on driving mode or on pumping mode can be switched.
  • driving the output shaft is of the change gear via a through drive the transfer case on the drive axles of the vehicle switched on, while a Changeover to the hydraulic pumps takes place.
  • i 1
  • Some vehicle transmissions also have a translation level with a fast translation (Overdrive - i ⁇ 1), at which the speed at the gearbox output is higher than the engine speed. It is often preceded by a Shift group or through an additional gear of the Gearbox realized and serves as a savings or Gentle gear at high vehicle speed.
  • the invention is based on the object the known mobile thick matter pump in this regard to improve that at a given pump speed Sound emission and the fuel consumption of the vehicle engine can be reduced.
  • the solution according to the invention is based on the idea that the change gearbox has at least two gear ratios has different selections maximum engine speeds via the speed limiting device are adjustable. It is special advantageous if two selected translation levels with direct translation and with translation into Fast (overdrive) depending on the translation different maximum engine speed assigned is. If in this case with direct switched on Ratio of the motor's rated nominal speed is set as the maximum engine speed, so is switched to translation into Fast and constant translation in transfer case the maximum engine speed is appropriately reduced so far, that the maximum allowable pump speed is not is exceeded. So you get here with smaller ones Engine speed and therefore less noise and smaller fuel requirements the possibility fully utilize the optimal pumping frequency. This is the case when the different translation levels assigned maximum engine speeds essentially proportional to their translation.
  • the maximum engine speeds can either be mechanical or electronic means.
  • the speed limiting device has expediently an adjustable mechanical End stop on an adjustment mechanism for control the fuel supply to the vehicle engine while in the latter case the speed limiting device a Microprocessor circuit to limit the engine speed according to the gear ratio that is switched on may include.
  • a further improvement in this regard is achieved if one on remote control signals from a pump remote control responsive switching device for remote switching of the change gear and the corresponding Control of the speed limiting device provided is.
  • a pump remote control responsive switching device for remote switching of the change gear and the corresponding Control of the speed limiting device provided is.
  • the remote control can also be a control device for automatic Switching of the translation levels and the associated maximum engine speeds are provided, either on falling below or exceeding one predetermined pump pressure or a predetermined minimum speed or a derived parameter responds.
  • the mobile concrete pump shown in Fig. 1 has Chassis 10, one near the front axle 12 and the cab 14 of the chassis 10 arranged Pivot bracket 16, one on the pivot bracket 16 by one vertical axis 18 placing boom 20 rotatable through 360 °, one via a material feed container 22 with concrete Actuable, hydraulically driven concrete pump 24 and one via a pipe switch 26 to the concrete pump 24 connected delivery line 28.
  • the five mast arms 1, 2, 3, 4 and 5 of the placing boom 20 are on the Swivel joint A with the pivot bracket 16 and at the articulated joints B, C, D and E linked together.
  • the one and only Fold out the mast arms 1 to 5 around the joints A to E is carried out hydraulically by means of double-acting hydraulic cylinders 30, with their free cylinder-side and rod-side ends on brackets or folding brackets the mast arms 1 to 5 and the pivot bracket 16 articulated are.
  • the vehicle engine located under the cab 14 40 is via the change gear 42 for both the drive as well as for driving the concrete pump 24.
  • the change gear 42 for this purpose is in the area of the cardan shaft 44 an input side with the output shaft 46 of the change gear 42 connected transfer case 48 arranged between a rear axle 50 leading through drive 52 for the travel drive and one distribution group connected to the hydraulic pumps 54 53 can be switched with a defined gear ratio.
  • the hydraulic pumps 54 are connected via hydraulic lines 56 connected to a hydraulic block 58 of the concrete pump 24, the u.a. to the hydraulic drive cylinders 60 and the reversing cylinder, not shown in the drawing for the diverter 26 is connected.
  • the switchover takes place in the embodiment shown a shift lever 62 or a control device 64.
  • the control device 64 can either be wired or wireless remote control device, for example in a remote control device for the concrete pump.
  • they can also be designed as automatic switching, for example to the one tapped via the signal line 66 Engine speed or on the signal line 68 tapped pump pressure responds and under or Exceeding a predetermined target threshold triggers a switching operation.
  • a mechanical one or electronic speed limiting device 70 provided, which in accordance with, for example, on Shift lever 62 tapped shift position of the change gear 40 a different maximum engine speed established. With this measure it is achieved that regardless of the gear ratio switched on (Gear) the hydraulic pumps 54 through the transfer case 48 with the same maximum pump speed are drivable.
  • the on the nominal speed of the Vehicle engine 40 matched higher maximum engine speed of, for example, 1800 revolutions per minute in direct gear allows a higher decrease in performance, however causes a higher noise emission and higher fuel consumption.
  • the lower one maximum engine speed in overdrive e.g. 1350 revolutions per minute the sound emission and consumption is reduced at the expense of a decrease in performance.
  • the invention refers to a mobile thick matter pump with a vehicle engine 40 and a change gear 42 having traction drive, at least one with one Output shaft 46 of the change gear if necessary with the interposition of a transfer case 48 detachable hydraulic pump 54 for driving the thick matter pump 24 and a speed limiting device to set a maximum engine speed at Pump operation.
  • the change gear has at least two translation levels, different maximum when switched on Engine speeds via the speed limiting device 70 are adjustable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Rotary Pumps (AREA)
  • Motor Power Transmission Devices (AREA)

Description

Die Erfindung betrifft eine fahrbare Dickstoffpumpe, insbesondere eine Betonpumpe, mit einem einen Fahrzeugmotor und ein Wechselgetriebe aufweisenden Fahrantrieb, mindestens einer mit einer Abtriebswelle des Wechselgetriebes ggf. unter Zwischenschaltung eines Verteilergetriebes kuppelbaren Hydraulikpumpe für den Antrieb und die Steuerung der Dickstoffpumpe sowie einer Drehzahlbegrenzungseinrichtung zur Einstellung einer maximalen Motordrehzahl beim Pumpbetrieb.The invention relates to a mobile thick matter pump, in particular a concrete pump with a vehicle engine and a drive mechanism having a change gear, at least one with an output shaft of the change gear if necessary with the interposition of a transfer case detachable hydraulic pump for the drive and the control of the thick matter pump and a speed limiting device to set a maximum Motor speed during pump operation.

Bei fahrbaren Betonpumpen ist es bekannt, beim Pumpbetrieb den vorhandenen Fahrzeugmotor und das Fahrzeuggetriebe für den Antrieb der Hydraulikpumpen zu verwenden. Zu diesem Zweck ist üblicherweise ein Verteilergetriebe im Kardanwellenstrang des Fahrzeugs angeordnet, das wahlweise auf Fahrbetrieb und auf Pumpbetrieb umgeschaltet werden kann. Beim Fahrbetrieb ist die Abtriebswelle des Wechselgetriebes über einen Durchtrieb des Verteilergetriebes auf die Antriebsachsen des Fahrzeugs durchgeschaltet, während beim Pumpbetrieb eine Umsteuerung auf die Hydraulikpumpen erfolgt. Im letzteren Falle ist die Übersetzung des Verteilergetriebes so ausgelegt, daß in der Übersetzungsstufe des Wechselgetriebes mit direkter Übersetzung (i=1) und annähernd mit Nenndrehzahl betriebenem Motor die maximal zulässige Pumpendrehzahl erreicht wird. Bei vielen Fahrzeuggetrieben ist die direkte Übersetzung zugleich die schnellste Übersetzung des Fahrzeuggetriebes und entspricht daher dem höchsten Gang. Im Prinzip ist es möglich, auch in einem niedereren Gang zu pumpen. Bei einer Begrenzung der maximalen Motordrehzahl im Direktgang auf die Nenndrehzahl des Motors wird hierbei jedoch die maximale Drehzahl der Hydraulikpumpe und damit die maximale Fördermenge nicht erreicht. Manche Fahrzeuggetriebe verfügen auch über eine Übersetzungsstufe mit einer Übersetzung ins Schnelle (Overdrive - i<1), bei der die Drehzahl am Getriebeausgang höher ist als die Motordrehzahl. Sie wird häufig durch eine Vor- oder Nachschaltgruppe oder durch einen zusätzlichen Gang des Wechselgetriebes verwirklicht und dient als Spar- oder Schongang bei hoher Fahrzeuggeschwindigkeit.In the case of mobile concrete pumps, it is known in pump operation the existing vehicle engine and transmission to be used to drive the hydraulic pumps. A transfer case is usually used for this purpose arranged in the cardan shaft of the vehicle, either on driving mode or on pumping mode can be switched. When driving, the output shaft is of the change gear via a through drive the transfer case on the drive axles of the vehicle switched on, while a Changeover to the hydraulic pumps takes place. In the latter The case is the translation of the transfer case designed that in the gear ratio of the change gear with direct translation (i = 1) and approximately the maximum permissible motor operated at nominal speed Pump speed is reached. With many vehicle transmissions is the direct translation at the same time fastest translation of the vehicle transmission and corresponds hence the highest gear. In principle it is possible to pump in a lower gear. At a Limitation of the maximum engine speed in direct gear on the nominal speed of the engine, however the maximum speed of the hydraulic pump and thus the maximum flow rate has not been reached. Some vehicle transmissions also have a translation level with a fast translation (Overdrive - i <1), at which the speed at the gearbox output is higher than the engine speed. It is often preceded by a Shift group or through an additional gear of the Gearbox realized and serves as a savings or Gentle gear at high vehicle speed.

Beim Betrieb der bekannten Betonpumpen wird als nachteilig empfunden, daß die Drehzahlarretierung im Bereich der leistungsgünstigen Nenndrehzahl mit einer hohen Schallemission und einem hohen Kraftstoffverbrauch verbunden ist.When operating the known concrete pumps is considered a disadvantage felt that the speed lock in the range the high-performance nominal speed with a high Noise emission and high fuel consumption connected is.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, die bekannte fahrbare Dickstoffpumpe dahingehend zu verbessern, daß bei gegebener Pumpdrehzahl die Schallemission und der Kraftstoffverbrauch des Fahrzeugmotors reduziert werden kann.Proceeding from this, the invention is based on the object the known mobile thick matter pump in this regard to improve that at a given pump speed Sound emission and the fuel consumption of the vehicle engine can be reduced.

Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.To solve this problem is the in claim 1 specified combination of features proposed. advantageous Refinements and developments of the invention result from the subclaims.

Der erfindungsgemäßen Lösung liegt der Gedanke zugrunde, daß das Wechselgetriebe mindestens zwei Übersetzungsstufen aufweist, bei deren Auswahl unterschiedliche maximale Motordrehzahlen über die Drehzahlbegrenzungseinrichtung einstellbar sind. Es ist dabei besonders vorteilhaft, wenn zwei ausgewählten Übersetzungsstufen mit direkter Übersetzung und mit Übersetzung ins Schnelle (Overdrive) je eine nach Maßgabe der Übersetzung unterschiedliche maximale Motordrehzahl zugeordnet ist. Wenn in diesem Falle bei eingeschalteter direkter Übersetzung die leistungsgünstige Nenndrehzahl des Motors als maximale Motordrehzahl eingestellt wird, so wird bei einer Umschaltung auf die Übersetzung ins Schnelle und konstanter Übersetzung im Verteilergetriebe die maximale Motordrehzahl zweckmäßig so weit reduziert, daß die maximal zulässige Pumpdrehzahl nicht überschritten wird. Man erhält hier also mit kleinerer Motordrehzahl und dadurch geringerer Geräuschentwicklung und kleinerem Kraftstoffbedarf die Möglichkeit, die optimale Pumpfrequenz voll auszuschöpfen. Dies ist der Fall, wenn die den verschiedenen Übersetzungsstufen zugeordneten maximalen Motordrehzahlen im wesentlichen proportional zu deren Übersetzung gewählt sind.The solution according to the invention is based on the idea that the change gearbox has at least two gear ratios has different selections maximum engine speeds via the speed limiting device are adjustable. It is special advantageous if two selected translation levels with direct translation and with translation into Fast (overdrive) depending on the translation different maximum engine speed assigned is. If in this case with direct switched on Ratio of the motor's rated nominal speed is set as the maximum engine speed, so is switched to translation into Fast and constant translation in transfer case the maximum engine speed is appropriately reduced so far, that the maximum allowable pump speed is not is exceeded. So you get here with smaller ones Engine speed and therefore less noise and smaller fuel requirements the possibility fully utilize the optimal pumping frequency. This is the case when the the different translation levels assigned maximum engine speeds essentially proportional to their translation.

Die maximalen Motordrehzahlen können entweder mit mechanischen oder elektronischen Mitteln eingestellt werden. Im ersteren Falle weist die Drehzahlbegrenzungseinrichtung zweckmäßig einen verstellbaren mechanischen Endanschlag an einem Verstellmechanismus zur Steuerung der Kraftstoffzufuhr zum Fahrzeugmotor auf, während im letzteren Falle die Drehzahlbegrenzungseinrichtung eine Mirkoprozessorschaltung zur Begrenzung der Motordrehzahl nach Maßgabe der jeweils eingeschalteten Übersetzungsstufe umfassen kann.The maximum engine speeds can either be mechanical or electronic means. In the former case, the speed limiting device has expediently an adjustable mechanical End stop on an adjustment mechanism for control the fuel supply to the vehicle engine while in the latter case the speed limiting device a Microprocessor circuit to limit the engine speed according to the gear ratio that is switched on may include.

Eine besonders einfache Handhabung ist gewährleistet, wenn ein auf die Schaltstellung des Wechselgetriebes ansprechender Sensor zur Ansteuerung der Drehzahlbegrenzungseinrichtung vorgesehen ist.Particularly easy handling is guaranteed if one on the shift position of the change gear responsive sensor for controlling the speed limiting device is provided.

Eine weitere Verbesserung in dieser Hinsicht wird erreicht, wenn eine auf Fernsteuersignale einer Pumpenfernsteuerung ansprechende Schalteinrichtung zur Fernschaltung des Wechselgetriebes und zur entsprechenden Ansteuerung der Drehzahlbegrenzungseinrichtung vorgesehen ist. Anstelle oder in Verbindung mit der Fernschaltung kann auch eine Steuereinrichtung zur automatischen Umschaltung der Übersetzungsstufen und der zugehörigen maximalen Motordrehzahlen vorgesehen werden, die entweder auf das Unterschreiten oder Überschreiten eines vorgegebenen Pumpendrucks oder einer vorgegebenen Mindestdrehzahl oder einer hieraus abgeleiteten Meßgröße anspricht.A further improvement in this regard is achieved if one on remote control signals from a pump remote control responsive switching device for remote switching of the change gear and the corresponding Control of the speed limiting device provided is. Instead of or in connection with the remote control can also be a control device for automatic Switching of the translation levels and the associated maximum engine speeds are provided, either on falling below or exceeding one predetermined pump pressure or a predetermined minimum speed or a derived parameter responds.

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

Fig. 1
eine Seitenansicht einer fahrbaren Betonpumpe mit Betonverteilermast im zusammengefalteten Zustand;
Fig. 2
ein Schema des Fahr- und Pumpantriebs der fahrbaren Betonpumpe nach Fig. 1.
The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing. Show it:
Fig. 1
a side view of a mobile concrete pump with concrete placing boom in the folded state;
Fig. 2
a diagram of the drive and pump drive of the mobile concrete pump of FIG. 1st

Die in Fig. 1 gezeigte fahrbare Betonpumpe weist ein Fahrgestell 10, einen in der Nähe der Vorderachse 12 und des Führerhauses 14 des Fahrgestells 10 angeordneten Drehlagerbock 16, einen am Drehlagerbock 16 um eine vertikale Achse 18 um 360° drehbaren Verteilermast 20, eine über einen Materialaufgabebehälter 22 mit Beton beaufschlagbare, hydraulisch angetriebene Betonpumpe 24 und eine über eine Rohrweiche 26 an die Betonpumpe 24 angeschlossene Förderleitung 28 auf. Die fünf Mastarme 1, 2, 3, 4 und 5 des Verteilermasts 20 sind an dem Drehgelenk A mit dem Drehlagerbock 16 und an den Knickgelenken B, C, D und E miteinander verbunden. Das Einund Ausfalten der Mastarme 1 bis 5 um die Gelenke A bis E erfolgt hydraulisch mittels doppelt wirkender Hydrozylinder 30, die mit ihren freien zylinderseitigen und stangenseitigen Enden an Auslegern bzw. Umlegebügeln der Mastarme 1 bis 5 und des Drehlagerbocks 16 angelenkt sind.The mobile concrete pump shown in Fig. 1 has Chassis 10, one near the front axle 12 and the cab 14 of the chassis 10 arranged Pivot bracket 16, one on the pivot bracket 16 by one vertical axis 18 placing boom 20 rotatable through 360 °, one via a material feed container 22 with concrete Actuable, hydraulically driven concrete pump 24 and one via a pipe switch 26 to the concrete pump 24 connected delivery line 28. The five mast arms 1, 2, 3, 4 and 5 of the placing boom 20 are on the Swivel joint A with the pivot bracket 16 and at the articulated joints B, C, D and E linked together. The one and only Fold out the mast arms 1 to 5 around the joints A to E is carried out hydraulically by means of double-acting hydraulic cylinders 30, with their free cylinder-side and rod-side ends on brackets or folding brackets the mast arms 1 to 5 and the pivot bracket 16 articulated are.

Der unter dem Führerhaus 14 angeordnete Fahrzeugmotor 40 ist über das Wechselgetriebe 42 sowohl für den Fahrantrieb als auch für den Antrieb der Betonpumpe 24 bestimmt. Zu diesem Zweck ist im Bereich des Kardanwellenstrangs 44 ein eingangsseitig mit der Abtriebswelle 46 des Wechselgetriebes 42 verbundenes Verteilergetriebe 48 angeordnet, das zwischen einem zur Hinterachse 50 führenden Durchtrieb 52 für den Fahrantrieb und einer mit den Hydraulikpumpen 54 verbundenen Verteilergruppe 53 mit definierter Übersetzung umschaltbar ist. Die Hydraulikpumpen 54 sind über Hydraulikleitungen 56 mit einem Hydraulikblock 58 der Betonpumpe 24 verbunden, der u.a. an die hydraulischen Antriebszylinder 60 und die in der Zeichnung nicht dargestellten Umsteuerzylinder für die Rohrweiche 26 angeschlossen ist.The vehicle engine located under the cab 14 40 is via the change gear 42 for both the drive as well as for driving the concrete pump 24. For this purpose is in the area of the cardan shaft 44 an input side with the output shaft 46 of the change gear 42 connected transfer case 48 arranged between a rear axle 50 leading through drive 52 for the travel drive and one distribution group connected to the hydraulic pumps 54 53 can be switched with a defined gear ratio. The hydraulic pumps 54 are connected via hydraulic lines 56 connected to a hydraulic block 58 of the concrete pump 24, the u.a. to the hydraulic drive cylinders 60 and the reversing cylinder, not shown in the drawing for the diverter 26 is connected.

Zur Ansteuerung der Hydraulikpumpen 54 im Pumpbetrieb weist das Wechselgetriebe 42 zwei ausgewählte Übersetzungsstufen auf, von denen die eine mit direkter Übersetzung (i=1) und die andere als Overdrive mit Übersetzung ins Schnelle (i<1) ausgestaltet ist. Die Umschaltung erfolgt bei dem gezeigten Ausführungsbeispiel über einen Schalthebel 62 oder eine Steuereinrichtung 64. Die Steuereinrichtung 64 kann entweder als kabelgebundenes oder drahtloses Fernsteuergerät ausgebildet sein, das beispielsweise in einer Fernbedienungseinrichtung für die Betonpumpe untergebracht ist. Andererseits kann sie auch als Schaltautomatik ausgebildet sein, die beispielsweise auf die über die Signalleitung 66 abgegriffene Motordrehzahl oder auf den über die Signalleitung 68 abgegriffenen Pumpendruck anspricht und bei Unteroder Überschreiten eines vorgegebenen Sollschwellwerts einen Schaltvorgang auslöst. Weiter ist eine mechanische oder elektronische Drehzahlbegrenzungseinrichtung 70 vorgesehen, die nach Maßgabe der beispielsweise am Schalthebel 62 abgegriffenen Schaltstellung des Wechselgetriebes 40 eine unterschiedliche maximale Motordrehzahl einstellt. Mit dieser Maßnahme wird erreicht, daß unabhängig von der eingeschalteten Übersetzungsstufe (Gang) die Hydraulikpumpen 54 über das Verteilergetriebe 48 mit der jeweils gleichen maximalen Pumpdrehzahl antreibbar sind. Die auf die Nenndrehzahl des Fahrzeugmotors 40 abgestimmte höhere maximale Motordrehzahl von beispielsweise 1800 Umdrehungen pro Minute im direkten Gang ermöglicht zwar eine höhere Leistungsabnahme, verursacht jedoch eine höhere Schallemission und einen höheren Kraftstoffverbrauch. Bei der niedrigeren maximalen Motordrehzahl im Overdrive von z.B. 1350 Umdrehungen pro Minute wird die Schallemission und der Verbrauch auf Kosten einer Leistungsabnahme reduziert. In beiden Fällen werden die Hydraulikpumpen 54 mit gleicher Drehzahl betrieben, so daß ein optimaler Pumpenbetrieb gewährleistet ist. Der Overdrive-Betrieb kommt vor allem in Betracht, wenn die Antriebsleistung des Motors nicht voll ausgeschöpft werden muß und wenn beispielsweise bei Nachtbetrieb oder in Lärmschutzgebieten eine geringe Geräuschbelastung erwünscht ist.To control the hydraulic pumps 54 in pump mode the change gear 42 has two selected gear ratios on, of which the one with direct translation (i = 1) and the other as overdrive with translation quickly (i <1). The switchover takes place in the embodiment shown a shift lever 62 or a control device 64. The control device 64 can either be wired or wireless remote control device, for example in a remote control device for the concrete pump. On the other hand, can they can also be designed as automatic switching, for example to the one tapped via the signal line 66 Engine speed or on the signal line 68 tapped pump pressure responds and under or Exceeding a predetermined target threshold triggers a switching operation. Next is a mechanical one or electronic speed limiting device 70 provided, which in accordance with, for example, on Shift lever 62 tapped shift position of the change gear 40 a different maximum engine speed established. With this measure it is achieved that regardless of the gear ratio switched on (Gear) the hydraulic pumps 54 through the transfer case 48 with the same maximum pump speed are drivable. The on the nominal speed of the Vehicle engine 40 matched higher maximum engine speed of, for example, 1800 revolutions per minute in direct gear allows a higher decrease in performance, however causes a higher noise emission and higher fuel consumption. At the lower one maximum engine speed in overdrive e.g. 1350 revolutions per minute the sound emission and consumption is reduced at the expense of a decrease in performance. In both cases, the hydraulic pumps 54 Operated at the same speed so that an optimal Pump operation is guaranteed. Overdrive operation comes into consideration especially when the drive power the engine does not have to be fully used and if for example during night operation or in noise protection areas a low noise level is desirable.

Wenn das Wechselgetriebe 42 im Fahrzeug nicht mit einem Overdrive, sondern nur mit direkter Übersetzung (i = 1) und mit langsameren Übersetzungen (i > 1) ausgerüstet ist, kann das Verteilergetriebe 48 mit einer auf den zweitschnellsten Gang abgestimmten höheren Übersetzung ausgestattet werden. Hierdurch wird die zur Verringerung der Geräuschemission und des Kraftstoffverbrauchs erforderliche kleinere Motordrehzal durch Umschalten des Wechselgetriebes vom zweitschnellsten Gang (i > 1) in den schnellsten Gang (i = 1) erzielt, wobei der zweitschnellste Gang des Wechselgetriebes die Abnahme der annähernd vollen Motorleistung etwa bei Nenndrehzahl des Motors erlaubt, während die Motordrehzahl im schnellsten Gang auf einen gegenüber der Nenndrehzahl niedrigeren Wert begrenzt wird.If the change gear 42 is not in the vehicle with a Overdrive, but only with direct translation (i = 1) and equipped with slower gear ratios (i> 1) is, the transfer case 48 with one on the second fastest gear tuned higher gear ratio be equipped. This will reduce it noise emissions and fuel consumption required lower engine speed by switching of the change gear from the second fastest gear (i> 1) in the fastest gear (i = 1), the second fastest gear of the change gearbox the decrease the almost full engine power, for example at nominal speed of the engine allowed while the engine speed in fastest gear to one compared to the nominal speed lower value is limited.

Eine weitere Möglichkeit, die Betonpumpe mit verschiedenen Motordrehzahlen bei gleichbleibender maximaler Fördermenge zu betreiben besteht auch dann, wenn die Hydraulikpumpe über einen schaltbaren Nebenabtrieb des Wechselgetriebes anstelle des Verteilergetriebes angetrieben wird. In diesem Falle ist die Drehzahlbegrenzung im Sinne der vorstehenden Ausführungen an die Übersetzungen des Nebenabtriebes anzupassen.Another way to use the concrete pump with different Engine speeds with constant maximum Operating the delivery rate also exists if the Hydraulic pump via a switchable power take-off of the Gearbox driven instead of the transfer case becomes. In this case the speed limit is to the Adapt translations of the power take-off.

Zusammenfassend ist folgendes festzustellen: Die Erfindung bezieht sich auf eine fahrbare Dickstoffpumpe mit einem einen Fahrzeugmotor 40 und ein Wechselgetriebe 42 aufweisenden Fahrantrieb, mindestens einer mit einer Abtriebswelle 46 des Wechselgetriebes gegebenenfalls unter Zwischenschaltung eines Verteilergetriebes 48 kuppelbaren Hydraulikpumpe 54 für den Antrieb der Dickstoffpumpe 24 sowie einer Drehzahlbegrenzungseinrichtung zur Einstellung einer maximalen Motordrehzahl beim Pumpbetrieb. Um wahlweise auch bei geringer Geräuschemission einen optimalen Pumpbetrieb zu gewährleisten, wird gemäß der Erfindung vorgeschlagen, daß das Wechselgetriebe mindestens zwei Übersetzungsstufen aufweist, bei deren Einschaltung unterschiedliche maximale Motordrehzahlen über die Drehzahlbegrenzungseinrichtung 70 einstellbar sind.In summary, the following can be stated: The invention refers to a mobile thick matter pump with a vehicle engine 40 and a change gear 42 having traction drive, at least one with one Output shaft 46 of the change gear if necessary with the interposition of a transfer case 48 detachable hydraulic pump 54 for driving the thick matter pump 24 and a speed limiting device to set a maximum engine speed at Pump operation. To optionally also with low noise emissions to ensure optimal pump operation, It is proposed according to the invention that the change gear has at least two translation levels, different maximum when switched on Engine speeds via the speed limiting device 70 are adjustable.

Claims (9)

  1. Mobile thick matter pump having a drive mechanism comprising a vehicle motor (40) and a gear box (42), at least one hydraulic pump (54) for driving the thick matter pump (24), which pump is adapted to be coupled to a driven shaft (46) of the gear box (42), if need be under interposition of a transfer gear box (48), as well as a speed limiter device (70) for setting a maximum motor speed during the operation of the pump, wherein the gear box (42) has at least two gear ratios, at the selection of which different maximum motor speeds are set by way of the speed limiter device (70).
  2. Mobile thick matter pump of claim 1, wherein depending on the chosen ratio (i) a different maximum motor speed is allocated to two specific gear ratios, a direct ratio (i=1) and a speed increasing ratio (i<1).
  3. Mobile thick matter pump of claim 1, wherein the maximum motor speeds allocated to the different gear ratios are essentially proportional to their ratio.
  4. Mobile thick matter pump of claim 1, further comprising a sensor for controlling the speed limiter device (70), which sensor responds to a gear selector position of the gear box (42).
  5. Mobile thick matter pump of claim 1, further comprising a switching device (64) for remote controlling the gear box (42) and for correspondingly controlling the speed limiter device (70), which switching device responds to remote control signals.
  6. Mobile thick matter pump of claim 1, further comprising a switching device (64) for automatically changing the gear ratios and the corresponding maximum motor speed, which switching device responds to falling below or exceeding a preset pump pressure or a measured value derived therefrom.
  7. Mobile thick matter pump of claim 1, further comprising a switching device for automatically changing the gear ratios and the corresponding maximum motor speed, which switching device responds to falling below or exceeding a preset minimum motor speed or a measured value derived therefrom.
  8. Mobile thick matter pump of claim 1, wherein the speed limiter device (70) comprises an adjustable mechanical limit stop at an adjusting mechanism for controlling the fuel delivery to the vehicle motor.
  9. Mobile thick matter pump of claim 1, wherein the speed limiter device (70) comprises a micro processor circuit for limiting the motor speed in dependence of the chosen gear ratio.
EP97931738A 1996-08-30 1997-07-02 Travelling thick matter pump Expired - Lifetime EP0922162B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19635200A DE19635200A1 (en) 1996-08-30 1996-08-30 Mobile thick matter pump
DE19635200 1996-08-30
PCT/EP1997/003457 WO1998009076A1 (en) 1996-08-30 1997-07-02 Travelling thick matter pump

Publications (2)

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EP0922162A1 EP0922162A1 (en) 1999-06-16
EP0922162B1 true EP0922162B1 (en) 2002-10-30

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EP97931738A Expired - Lifetime EP0922162B1 (en) 1996-08-30 1997-07-02 Travelling thick matter pump

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US (1) US6164923A (en)
EP (1) EP0922162B1 (en)
JP (1) JP4102443B2 (en)
KR (1) KR20000029914A (en)
CA (1) CA2263432C (en)
DE (2) DE19635200A1 (en)
ES (1) ES2184114T3 (en)
WO (1) WO1998009076A1 (en)

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DE102015122591A1 (en) * 2015-12-22 2017-06-22 Schwing Gmbh Mobile slurry pump with hydraulic tank
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Publication number Publication date
EP0922162A1 (en) 1999-06-16
KR20000029914A (en) 2000-05-25
JP2000517394A (en) 2000-12-26
ES2184114T3 (en) 2003-04-01
CA2263432A1 (en) 1998-03-05
CA2263432C (en) 2005-12-13
DE59708631D1 (en) 2002-12-05
JP4102443B2 (en) 2008-06-18
US6164923A (en) 2000-12-26
DE19635200A1 (en) 1998-03-05
WO1998009076A1 (en) 1998-03-05

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