EP0281683A2 - Process for determining the end state of compactness while working with a soil-compacting machine - Google Patents

Process for determining the end state of compactness while working with a soil-compacting machine Download PDF

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Publication number
EP0281683A2
EP0281683A2 EP87118871A EP87118871A EP0281683A2 EP 0281683 A2 EP0281683 A2 EP 0281683A2 EP 87118871 A EP87118871 A EP 87118871A EP 87118871 A EP87118871 A EP 87118871A EP 0281683 A2 EP0281683 A2 EP 0281683A2
Authority
EP
European Patent Office
Prior art keywords
engine
parameter
soil
compactness
compaction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87118871A
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German (de)
French (fr)
Other versions
EP0281683A3 (en
Inventor
Franz Riedl
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.)
Wacker Werke GmbH and Co KG
Original Assignee
Wacker Werke GmbH and Co KG
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Filing date
Publication date
Application filed by Wacker Werke GmbH and Co KG filed Critical Wacker Werke GmbH and Co KG
Publication of EP0281683A2 publication Critical patent/EP0281683A2/en
Publication of EP0281683A3 publication Critical patent/EP0281683A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • the acceleration of the compaction element which is important for the compaction work, in the known case of the vibrating rollers of a soil compaction roller, is measured with the aid of acceleration sensors.
  • the measured acceleration corresponds to the actual value of the soil strength achieved and shows the operator when the desired compaction state has been reached.
  • the invention has for its object to provide a method according to the preamble of claim 1, the Much simpler and less expensive means can be implemented than the known method and is therefore also suitable for use in small devices such as soil compaction plates, rammers or the like.
  • the engine offers various, easy-to-measure parameters, including the delivered engine or engine transmission torque, the exhaust gas temperature and the current fuel consumption.
  • the change in the measured parameters can be displayed directly, for example as a pointer deflection that changes with decreasing speed, in order then to be evaluated by the operator.
  • it is provided to generate an - optical, acoustic or the like - signal when the temporal differential quotient of the engine power or the engine parameter characteristic for this falls below a predetermined value.
  • structurally simple, inexpensive, fail-safe and low-wear aids are sufficient to accomplish this.
  • auxiliaries as such which are required to implement the method according to the invention, are familiar to the person skilled in the art and for the most part are completely commercially available, such as in the case of exhaust gas temperature measurement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Road Paving Machines (AREA)

Abstract

A process is proposed for determining when the end state of compactness has been reached when working in the ground with a power-driven soil-compacting machine. For this purpose, a machine parameter dependent upon the state of compactness is permanently monitored in a known manner, and the invention consists in the fact that the relative change with time of the degree of compactness is determined, and that, for this purpose, the relative change with time of the delivered motor output or of a motor parameter characteristic of this motor output is measured as the machine parameter.

Description

Die Erfindung bezieht sich auf ein Verfahren gemäß dem Ober­begriff des Patentanspruchs 1.The invention relates to a method according to the preamble of patent claim 1.

Bei den bekannten Verfahren wird zum Feststellen des Endzu­standes der im Boden erreichten Verdichtung als Maschinen­parameter die für die Verdichtungsarbeit maßgebliche Be­schleunigung des Verdichtungselementes, im bekannten Falle der vibrierenden Walzen einer Bodenverdichtungswalze, mit Hilfe von Beschleunigungsaufnehmern gemessen. Die gemessene Beschleunigung entspricht dem Ist-Wert der jeweils erreichten Bodenfestigkeit und zeigt dem Bediener an, wann der gewünsch­te Verdichtungszustand erreicht ist.In the known methods, to determine the final state of the compaction achieved in the soil, the acceleration of the compaction element, which is important for the compaction work, in the known case of the vibrating rollers of a soil compaction roller, is measured with the aid of acceleration sensors. The measured acceleration corresponds to the actual value of the soil strength achieved and shows the operator when the desired compaction state has been reached.

Die zur Durchführung des bekannten Verfahrens erforderlichen Beschleunigungsaufnehmer bilden zusammen mit der zugehörigen Auswertelektronik eine sehr aufwendige und kostenintensive Einrichtung, deren Einsatz deswegen nur bei Großgeräten ver­nünftig ist.The accelerometers required to carry out the known method, together with the associated evaluation electronics, form a very complex and cost-intensive device, the use of which is therefore only sensible in the case of large devices.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren nach dem Oberbegriff des Patentanspruchs 1 zu schaffen, das mit wesentlich einfacheren und kostengünstigeren Mitteln rea­lisiert werden kann als das bekannte Verfahren und sich da­her auch für die Anwendung bei kleinen Geräten wie Boden­verdichtungsplatten, Stampfern, oder dgl. eignet.The invention has for its object to provide a method according to the preamble of claim 1, the Much simpler and less expensive means can be implemented than the known method and is therefore also suitable for use in small devices such as soil compaction plates, rammers or the like.

Die vorstehende Aufgabe wird durch die im Kennzeichnungs­teil des Patentanspruchs 1 genannten Merkmale gelöst.The above object is achieved by the features mentioned in the characterizing part of patent claim 1.

Bei dem erfindungsgemäßen Verfahren wird gegenüber dem be­kannten Verfahren anstelle der in der gemessenen Beschleu­nigung zum Ausdruck kommenden Ist-Wertes der Bodenfestig­keit nur die relative zeitliche Veränderung des Verdich­tungsgrades festgestellt, wofür als Maschinenparameter die Motorleistung herangezogen werden kann, da Versuche der Anmelderin gezeigt haben, daß die dem Antriebsmotor für die Schwingungserreger abgeforderte Leistung mit zunehmender Bodensteifigkeit abnimmt und ihr zeitlicher Differential­quotient gegen Null geht, wenn sich die Bodensteifigkeit unter der Einwirkung der Bodenverdichtungmaschine ebenfalls nicht mehr ändert, ohne daß es hierbei auf den tatsächlichen Wert der erreichten Bodensteifigkeit ankäme. Es ist daher mit einfachen technischen Hilfsmitteln, ggf. unter Einschluß einer optischen oder akustischen Anzeige, möglich, festzu­stellen und anzuzeigen, wann die bei dem vorliegenden Ver­dichtungsmaterial, der verwendeten Verdichtungsmaschine, der gegebenen Feuchtigkeit im Boden usw. maximal mögliche Verdichtungsgrad erreicht worden ist, so daß die weitere Be­arbeitung des Bodens mit der Bodenverdichtungsmaschine ein­gestellt werden kann, weil damit keine weitere Verdichtung des Bodens mehr erreichbar ist sondern im Gegenteil beim Weiterarbeiten , wie bekannt , nur die Gefahr einer Wieder­auflockerung des Bodens besteht.In the method according to the invention, compared to the known method, instead of the actual value of the soil strength expressed in the measured acceleration, only the relative temporal change in the degree of compaction is determined, for which the engine power can be used as machine parameters, since tests by the applicant have shown that the the drive motor for the vibration exciter required power decreases with increasing ground stiffness and their temporal differential quotient goes to zero if the ground stiffness also no longer changes under the influence of the soil compaction machine, without it being a matter of the actual value of the ground stiffness achieved. It is therefore possible with simple technical aids, possibly including an optical or acoustic display, to determine and indicate when the maximum possible degree of compaction has been reached with the compaction material used, the compaction machine used, the moisture level in the soil, etc., so that the further cultivation of the soil can be stopped with the soil compaction machine, because this means that no further compaction of the soil is achievable, but on the contrary, as is known, there is only the risk of loosening the soil when continuing to work.

Für die Feststellung der Motorleistung bietet der Motor ver­schiedene, einfach zu messende Parameter an, zu denen das abgegebene Motor- oder Motorgetriebe-Drehmoment , die Ab­gastemperatur und der aktuelle Kraftstoffverbrauch gehören. Die Veränderung der gemessenen Parameter kann direkt z.B. als sich mit abnehmender Geschwindigkeit ändernder Zeiger­ausschlag , angezeigt werden, um dann vom Bedienenden aus­gewertet zu werden. Bei einer anderen bevorzugten Ausfüh­rungsform der Erfindung ist vorgesehen, ein - optisches, akustisches oder dgl. - Signal zu erzeugen, wenn der zeit­liche Differentialquotient der Motorleistung bzw. des für diese charakteristischen Motorparameterseinen vorgegebenen Wert unterschreitet. In jedem Falle genügen baulich ein­fache, kostengünstige, störsichere und verschleißarme Hilfs­mittel , um dies zu bewerkstelligen.To determine the engine performance, the engine offers various, easy-to-measure parameters, including the delivered engine or engine transmission torque, the exhaust gas temperature and the current fuel consumption. The change in the measured parameters can be displayed directly, for example as a pointer deflection that changes with decreasing speed, in order then to be evaluated by the operator. In another preferred embodiment of the invention, it is provided to generate an - optical, acoustic or the like - signal when the temporal differential quotient of the engine power or the engine parameter characteristic for this falls below a predetermined value. In any case, structurally simple, inexpensive, fail-safe and low-wear aids are sufficient to accomplish this.

Die Hilfsmittel als solche, die zur Realisierung des er­findungsgemäßen Verfahrens erforderlich sind, sind dem Fach­mann geläufig und größtenteils komplett im Handel erhält­lich, wie z.B. im Falle der Abgastemperaturmessung.The auxiliaries as such, which are required to implement the method according to the invention, are familiar to the person skilled in the art and for the most part are completely commercially available, such as in the case of exhaust gas temperature measurement.

Wegen des nur geringen Aufwandes, der zur Durchführung des erfindungsgemäßen Verfahrens bei Bodenverdichtungsmaschinen getrieben werden muß, eignet sich dieses insbesondere auch für Bodenverdichtungsgeräte von mittlerer und kleiner Größe, beispielsweise speziell auch für Vibrationsplatten. Anderer­seits ist die Anwendungsmöglichkeit natürlich auch bei Groß­maschinen gegeben, sofern es auch bei diesen nur darum geht, festzustellen, wann der maximal erreichbare Verdichtungs­grad im wesentlichen erreicht worden ist.Because of the low effort that has to be carried out to carry out the method according to the invention in soil compaction machines, this is particularly suitable for soil compaction devices of medium and small size, for example especially also for vibratory plates. On the other hand, the application is of course also available for large machines, provided that it is only a question of determining when the maximum achievable degree of compaction has essentially been reached.

Claims (4)

1. Verfahren zum Feststellen, wann beim Arbeiten mit einer motorisch angetriebenen Bodenverdichtungsmaschine im Boden der Verdichtungs-Endzustand erreicht worden ist, wofür permanent ein vom Verdichtungszustand abhängiger Maschinenparameter überwacht wird, dadurch ge­kennzeichnet, daß die relative zeitliche Veränderung des Verdichtungsgrades festgestellt und hierfür als Parameter die realtive zeitliche Veränderung der abge­gebenen Motorleistung bzw. eines für diese charakte­ristischen Motorparameters gemessen wird.1. A method for determining when end state compression has been achieved when working with a motor-driven soil compaction machine in the bottom of the, is what constantly monitors a dependent on the state of compaction machine parameter, characterized in that the relative change over time in the degree of compaction is detected and this as a parameter Realtive change over time of the delivered engine power or one of these characteristic engine parameters is measured. 2. Verfahren nach Anspruch 1, dadurch gekennzeich­net, daß die relative Veränderung der Motorleistung bzw. des für diese charakteristischen Motorparameters permanent angezeigt wird.2. The method according to claim 1, characterized in that the relative change in the engine power or is permanently displayed for this characteristic engine parameter. 3. Verfahren nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß ein Signal erzeugt wird, wenn der zeitliche Differentialquotient der Motorleistung bzw. des für diesen charakteristischen Motorparameters einen vorgegebenen Wert unterschreitet.3. The method of claim 1 or 2, characterized in that a signal is generated if the time differential quotient of the engine performance or the characteristic of this engine parameter falls below a predetermined value. 4. Verfahren nach Anspruch 1, dadurch gekennzeich­net, daß als Motorparameter permanent das abgegebene Motor- oder Motorgetriebe-Drehmoment , die Abgastempe­ratur, oder der Kraftstoffverbrauch gemessen wird.4. The method according to claim 1, characterized in that the motor parameters permanently discharged motor or engine transmission torque, the exhaust gas temperature, or the fuel consumption is measured.
EP87118871A 1987-01-30 1987-12-18 Process for determining the end state of compactness while working with a soil-compacting machine Withdrawn EP0281683A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3702832 1987-01-30
DE19873702832 DE3702832A1 (en) 1987-01-30 1987-01-30 METHOD FOR DETERMINING THE FINAL COMPACTION STATE WHEN WORKING WITH A GROUND COMPRESSOR

Publications (2)

Publication Number Publication Date
EP0281683A2 true EP0281683A2 (en) 1988-09-14
EP0281683A3 EP0281683A3 (en) 1989-12-13

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EP87118871A Withdrawn EP0281683A3 (en) 1987-01-30 1987-12-18 Process for determining the end state of compactness while working with a soil-compacting machine

Country Status (4)

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EP (1) EP0281683A3 (en)
JP (1) JPS63189518A (en)
AU (1) AU1098788A (en)
DE (1) DE3702832A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002253A1 (en) * 1991-07-20 1993-02-04 Wacker-Werke Gmbh & Co.Kg Process for determining and indicating the degree of ground compacting attained during work with a ground compacter
CN109673192A (en) * 2019-01-08 2019-04-26 中国科学院东北地理与农业生态研究所 A kind of change house plants soil pH device and its application method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006008543U1 (en) * 2006-05-26 2006-09-14 Weber Maschinentechnik Gmbh Construction machine monitor and control has integrated service and motor management systems and control module with diagnosis module
WO2009060833A1 (en) 2007-11-07 2009-05-14 Toyota Jidosha Kabushiki Kaisha Ball end mill
DE102011104269A1 (en) 2011-06-15 2012-12-20 Wacker Neuson Produktion GmbH & Co. KG Guide bar with energy storage
DE102016003387B4 (en) * 2016-03-18 2023-07-27 Bomag Gmbh Method for soil compaction with an add-on compactor, add-on compactor and excavator with an add-on compactor
CN109196986A (en) * 2018-11-08 2019-01-15 景禄平 A kind of carrot rotary tillage, ridging Precision Seeding all-in-one machine

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FR1445717A (en) * 1965-06-04 1966-07-15 Entpr Bourdin & Chausse Device for controlling the lift and deflection of soils
DE2554013A1 (en) * 1975-12-01 1977-06-02 Koehring Gmbh Bomag Division METHOD AND DEVICE FOR DYNAMIC SOIL COMPACTION

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DE1223600B (en) * 1964-06-22 1966-08-25 Tadao Yamaoka Device for automatic regulation of the working depth of a tillage device
US3599543A (en) * 1964-12-02 1971-08-17 Stothert & Pitt Ltd Vibratory machines
DE2018219C3 (en) * 1970-04-16 1979-02-22 Losenhausen Maschinenbau Ag, 4000 Duesseldorf Device for generating a display or control signal for the drive of a dynamic soil compactor
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DD121188A1 (en) * 1975-08-20 1976-07-12
DE3005710C2 (en) * 1980-02-15 1985-08-01 Leningradskij filial Gosudarstvennogo proektno-izyskatel'skogo i naučno-issledovatel'skogo instituta Aeroproekt, Leningrad Process for the determination of deformation parameters of substances, in particular of building materials and subsoil
DE3421824C2 (en) * 1984-06-13 1986-07-17 CASE VIBROMAX GmbH & Co KG, 4000 Düsseldorf Device for checking the compaction in vibration compaction equipment
DE3522818C2 (en) * 1985-06-26 1994-07-21 Bosch Gmbh Robert Control device for position control of a working device articulated on an agricultural work vehicle via a lifting mechanism
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1445717A (en) * 1965-06-04 1966-07-15 Entpr Bourdin & Chausse Device for controlling the lift and deflection of soils
DE2554013A1 (en) * 1975-12-01 1977-06-02 Koehring Gmbh Bomag Division METHOD AND DEVICE FOR DYNAMIC SOIL COMPACTION

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002253A1 (en) * 1991-07-20 1993-02-04 Wacker-Werke Gmbh & Co.Kg Process for determining and indicating the degree of ground compacting attained during work with a ground compacter
EP0632165A1 (en) * 1991-07-20 1995-01-04 WACKER-WERKE GmbH & Co. KG Process for determining and indicating the degree of ground compacting attained during work with a ground compactor
US5415494A (en) * 1991-07-20 1995-05-16 Wacker-Werke Gmbh & Co. Kg Process for determining and indicating the degree of ground compacting attained during work with a ground compacter
CN109673192A (en) * 2019-01-08 2019-04-26 中国科学院东北地理与农业生态研究所 A kind of change house plants soil pH device and its application method
CN109673192B (en) * 2019-01-08 2023-04-14 中国科学院东北地理与农业生态研究所 Device for changing pH value of soil of domestic plant and using method thereof

Also Published As

Publication number Publication date
AU1098788A (en) 1988-08-04
EP0281683A3 (en) 1989-12-13
JPS63189518A (en) 1988-08-05
DE3702832A1 (en) 1988-08-18

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