WO2001031301A1 - Machine de construction - Google Patents

Machine de construction Download PDF

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Publication number
WO2001031301A1
WO2001031301A1 PCT/EP2000/010546 EP0010546W WO0131301A1 WO 2001031301 A1 WO2001031301 A1 WO 2001031301A1 EP 0010546 W EP0010546 W EP 0010546W WO 0131301 A1 WO0131301 A1 WO 0131301A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor
construction machine
correction factor
measured value
representative
Prior art date
Application number
PCT/EP2000/010546
Other languages
German (de)
English (en)
Inventor
Armin Montermann
Axel Mahlberg
Dieter Simons
Günter HÄHN
Original Assignee
Wirtgen Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wirtgen Gmbh filed Critical Wirtgen Gmbh
Priority to AU13878/01A priority Critical patent/AU1387801A/en
Publication of WO2001031301A1 publication Critical patent/WO2001031301A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/12—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge by controlling the speed of the belt
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums

Definitions

  • the invention relates to a construction machine according to the preamble of claim 1.
  • Such construction machines have a machine frame, with at least one conveyor device mounted in the machine frame, e.g. an endlessly revolving conveyor belt, the conveyor discharging processed material or feeding material to be processed.
  • the conveyor device mounted in the machine frame, e.g. an endlessly revolving conveyor belt, the conveyor discharging processed material or feeding material to be processed.
  • the material throughput should be measured continuously and without contact.
  • US Pat. No. 5,866,855, DE 31 02 133 A and DE 196 31 926 A describe belt scales which are used on a conveyor.
  • the known belt scales have in common that they act as the reaction force on a support roller of a conveyor belt Measure the current weight of the material being transported on the conveyor belt.
  • conveyor belts are arranged horizontally and stationary.
  • the known measuring methods have the disadvantage that the measurement result is influenced by many factors, such as the tension of the conveyor belt, temperature differences and strong acceleration or deceleration of the conveyor belt.
  • Another disadvantage of the known measuring devices is that they are arranged at locations which lead to further measuring errors due to contamination and mechanical loads on the measuring devices.
  • the invention has for its object to provide a construction machine of the type mentioned, and a method for measuring a quantity of material conveyed by a conveyor of a construction machine, which enables the measurement of the quantity of material conveyed continuously with high accuracy.
  • the invention advantageously provides that a measuring device continuously measures an instantaneous measured value representative of the weight of the material that acts over the entire load-bearing length of the conveying device, and that the evaluating device uses the measured value, the conveying time and a previously determined or calculated correction factor conveyed amount of material calculated.
  • the instantaneous measured value representative of the acting weight force of the conveyed material relates to the entire load-bearing length of the conveying device. It is advantageous that the conveyor for carrying out the weight measurement in the manner of a belt scale does not have to be changed in construction and therefore with regard to the conveyor technology and not with regard to the measuring technology must be optimized.
  • the correction factor can be a fixed value or a variable value that is continuously adjusted and therefore changes over time.
  • a correction factor in the form of a fixed value can be useful, for example, for semi-mobile machines that are driven to a work station and are operated stationary there.
  • the dynamic adjustment of the correction factor is preferable, which can take into account the change in the parameters over time.
  • the correction factor can be empirically predetermined for certain operating conditions or can result from a calculation based on a previously defined correction function.
  • the correction factor can therefore be the result of the correction function and can also be variable over time.
  • the correction function can be determined, for example, using regression formulas and also contain functional parts that are based on physical laws.
  • the time-variable correction factor is fed to the evaluation device as the current correction factor.
  • a time-varying correction factor has the advantage that during the Incorporating parameters into the work process and thereby increasing the accuracy of the measurement of the amount of material conveyed.
  • the conveying speed of the conveying device is adjustable and that the set or measured conveying speed value is additionally used to calculate the conveyed amount of material (G) or is incorporated into the correction factor.
  • the conveying device on the machine frame can be pivotable by a longitudinal inclination angle and / or a lateral pivoting angle, the correction factor being dependent on the set or measured longitudinal inclination angle or lateral pivoting angle relative to the machine frame. In this way it is possible to maintain the measuring accuracy of the measuring device even under different longitudinal inclination angles and different pivoting angles of the conveying device.
  • Another measuring device can measure the longitudinal and / or bank angle of the machine frame relative to the horizontal, the correction factor then additionally being dependent on the set or measured longitudinal bank or bank angle of the machine frame.
  • a multi-dimensional map or a correction function for determining correction factors is stored in a memory of the evaluation device.
  • a current or current correction factor depending on one or more of the measured and / or set parameters can thus be read out from the memory.
  • Disturbances such as accelerations that affect the machine frame or the conveyor, climatic conditions, or the type of material being conveyed.
  • the measured value representative of the weight can consist of a force component measured in a predetermined direction.
  • the representative measured value therefore does not necessarily have to be measured in the direction of the gravitational force.
  • the position of the measured force component can be taken into account on the basis of the measured angular position of the conveyor device and the machine frame.
  • the measuring device can be arranged on an adjusting device with which the longitudinal inclination angle of the conveyor device is set.
  • the force component acting on the adjusting device is measured, which results between the conveyor device and the machine frame.
  • the adjusting device can consist of a pulling rope which is variable in length, the measuring device determining the measured value currently representative of the weight from the pulling force acting on the pulling rope.
  • the actuating device can consist of a hydraulic cylinder, the hydraulic pressure of the hydraulic cylinder representing the measured value representative of the weight.
  • the torque of the belt drive of the conveyor belt can also be determined as a measured value representative of the weight.
  • Fig. 2 is a plan view of the front loader
  • Fig. 3 is a block diagram for the measurement of the amount of material conveyed.
  • a device for milling off floor surfaces, in particular asphalt, concrete or the like. with a suspension 3, carrying a machine frame 4 and a shaft mounted in the machine frame 4 milling roller 5, which extends transversely to the direction of travel is shown in 'Fig. 1,.
  • Such machines are also referred to as front loader milling machines because they transport the milled material forward in the direction of travel onto transport vehicles.
  • a first conveyor device 10 with a conveyor belt is arranged, which is arranged at an angle of inclination in a shaft of the machine frame 4 and transfers the milled material to a second conveyor device 1 with a further conveyor belt 2.
  • Tension rods in connection with a hydraulic cylinder 18 or also a rope are suitable as the adjusting device 16, the effective length of which can be lengthened or shortened with a winding device or with a hydraulic cylinder.
  • a first measuring device 6 detects the forces acting on the actuating device 16.
  • the hydraulic pressure in the hydraulic cylinder 18 or the tensile force acting on a rod of the actuating device 16 or the tensile force acting on a rope of the actuating device 16 can be determined.
  • the conveyor device 1 can be pivoted on the machine frame 4 with the aid of an actuating device 11 about a pivot axis 12 which is orthogonal to the machine frame 4. It is also possible to measure the forces acting on the joint between the conveyor 1 and the machine frame 4 and to use them as a measurement value representative of the weight of the material.
  • An evaluation device 8 calculates from the measured value F of the measuring device 6 representative of the weight, the elapsed time t and the conveyor belt speed value v Conveying device and with the aid of a correction factor k the total amount of material conveyed.
  • the conveying speed can be supplied to the evaluation device 8 as a manipulated value or as a measured value.
  • the position of the conveyor 1 in space influences the measurement of the representative instantaneous measured value for the weight, the position of the conveyor 1 relative to the machine frame and / or also the position of the machine frame relative to the horizontal is measured.
  • a multi-dimensional characteristic diagram for correction factors k or an empirically determined correction function is stored in a memory 20 of the evaluation device 8, so that correction factors k can be confirmed as a function of one or more of the measured and / or set parameters.
  • the longitudinal inclination angle ⁇ and the lateral pivot angle ß of the conveyor 1 relative to the machine frame 4 the longitudinal u.
  • Cross-slope angle ⁇ , ⁇ of the machine frame 4 relative to the horizontal predetermined machine parameters, for example the conveyor belt speed, inevitably occurring operating states and disturbance variables, for example accelerations which act on the machine frame 4 and / or the conveyor device 1, climatic conditions and the type of funded material.
  • the correction factor resulting from the characteristic diagram or the correction function can be static or dynamic.
  • the dynamic correction factor takes into account the changes over time that result in particular when the construction machine is moving.
  • the correction factor is continuously adjusted according to the operating and boundary conditions, so that the measured value is highly accurate and reproducible, even with a moving construction machine.
  • the evaluation device 8 can therefore determine with the aid of the representative measured value F for the weight, the correction factor k, the time t, and the conveyor belt speed value v the amount of material G conveyed with high accuracy.
  • FIG. 3 shows a block diagram for the measurement of the conveyed amount of material G.
  • the evaluation device 8 receives from the measuring device 6 the measured value F representative of the weight of the quantity of material on the conveyor belt 2, and from a time measuring device 28 the time elapsed since the start of the measurement t and via a transducer 30 the set or measured conveyor belt speed measured value v.
  • the evaluation device 8 reads a current correction factor k from the map memory 20, which is dependent at least on the set longitudinal inclination angle ⁇ .
  • the pitch angle ⁇ is entered with the aid of a sensor 22. Furthermore, a transducer 24 supplies the lateral swivel angle ⁇ of the conveyor device 1.
  • Another measuring device 14 supplies the inclination angle ⁇ , ⁇ of the machine frame measured orthogonally to one another relative to the horizontal.
  • a temperature sensor 26 can enter a temperature measurement or other climatic influencing factors such as, for example, the air humidity.
  • the evaluation device 8 can determine an appropriate correction factor as a function of at least one of the aforementioned parameters and take this into account when calculating the amount of material conveyed.
  • the correction factors stored in the memory 20 are determined empirically and correspondingly read into the map of the memory.
  • This correction factor k can, for example, be a constant value for a specific application, for example in the case of a semi-mobile construction machine, or a time-variable dynamic value which takes account of changes in the parameters over time. The latter is particularly useful for mobile construction machines to take into account the varying operating conditions. It goes without saying that a measurement of the amount of material conveyed can also be carried out in a corresponding manner on the conveyor device 10, a measurement value representative of the weight being measurable on the bearing of the conveyor device 10 in the machine frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Control Of Conveyors (AREA)

Abstract

La présente invention concerne une machine de construction comprenant un châssis (4), au moins un dispositif d'acheminement (1), tel qu'une bande transporteuse à rotation continue (2), se trouvant dans le cadre de la machine (4), le dispositif d'acheminement servant à l'évacuation de la matière traitée ou à l'approvisionnement en matière à traiter. Selon l'invention, un dispositif de mesure (6) permet de mesurer une valeur instantanée représentant le poids que la matière exerce sur la longueur de support totale du dispositif d'acheminement (1), et le dispositif d'évaluation (8) calcule la quantité de matière transportée, grâce à la valeur mesurée, au temps d'acheminement, et à un facteur de correction déterminé ou calculé précédemment.
PCT/EP2000/010546 1999-10-27 2000-10-26 Machine de construction WO2001031301A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU13878/01A AU1387801A (en) 1999-10-27 2000-10-26 Construction machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19951646.4 1999-10-27
DE19951646A DE19951646A1 (de) 1999-10-27 1999-10-27 Baumaschine

Publications (1)

Publication Number Publication Date
WO2001031301A1 true WO2001031301A1 (fr) 2001-05-03

Family

ID=7926986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/010546 WO2001031301A1 (fr) 1999-10-27 2000-10-26 Machine de construction

Country Status (3)

Country Link
AU (1) AU1387801A (fr)
DE (1) DE19951646A1 (fr)
WO (1) WO2001031301A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017062533A1 (fr) * 2015-10-07 2017-04-13 Caterpillar Paving Products Inc. Calibrage d'un système de réglage de convoyeur de fraiseuse à froid
US10227739B2 (en) 2014-12-19 2019-03-12 Bomag Gmbh Method for determining a mass of milled material and ground milling machine for carrying out said method
DE102021114706A1 (de) 2021-06-08 2022-12-08 Wirtgen Gmbh Selbstfahrende Fräsmaschine mit einem Maschinenrahmen und einer Fördereinrichtung zum Abführen von Material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3594409B1 (fr) 2018-07-13 2022-03-09 Joseph Vögele AG Engin de construction doté d'une installation de bande transporteuse à capteur de poids

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442593A1 (fr) * 1990-02-12 1991-08-21 Scanroad, Inc. Système de pavage surveillé
EP0694651A2 (fr) * 1994-07-29 1996-01-31 WIRTGEN GmbH Machine de fraisage avec outil de fraisage à largeur multiple
US5959257A (en) * 1998-04-15 1999-09-28 Harvestmaster, Inc. System for weighing material on a conveyor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083184B (de) * 1958-05-09 1960-06-09 Maschf Augsburg Nuernberg Ag Sicherungsvorrichtung gegen das Auflegen eines wippbar und schwenkbar auf einem Wagen angeordneten Bandfoerderers
US4041623A (en) * 1975-09-22 1977-08-16 Miller Formless Co., Inc. Grade cutting machine
DE2841494A1 (de) * 1978-09-23 1980-04-03 Hauni Werke Koerber & Co Kg Verfahren und anordnung zum kontinuierlichen erfassen des schuettgewichtes von koernigem, faserigem oder blattartigem gut
DE4230368A1 (de) * 1992-09-11 1994-03-17 Frisse Richard Maschf Wiegeverfahren und Bandwaage hierfür

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442593A1 (fr) * 1990-02-12 1991-08-21 Scanroad, Inc. Système de pavage surveillé
EP0694651A2 (fr) * 1994-07-29 1996-01-31 WIRTGEN GmbH Machine de fraisage avec outil de fraisage à largeur multiple
US5959257A (en) * 1998-04-15 1999-09-28 Harvestmaster, Inc. System for weighing material on a conveyor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10227739B2 (en) 2014-12-19 2019-03-12 Bomag Gmbh Method for determining a mass of milled material and ground milling machine for carrying out said method
WO2017062533A1 (fr) * 2015-10-07 2017-04-13 Caterpillar Paving Products Inc. Calibrage d'un système de réglage de convoyeur de fraiseuse à froid
DE102021114706A1 (de) 2021-06-08 2022-12-08 Wirtgen Gmbh Selbstfahrende Fräsmaschine mit einem Maschinenrahmen und einer Fördereinrichtung zum Abführen von Material
EP4101982A1 (fr) 2021-06-08 2022-12-14 Wirtgen GmbH Machine automotrice à fraiser dotée d'un bâti de machine et d'un dispositif de transport permettant d'évacuer la matière
US11846076B2 (en) 2021-06-08 2023-12-19 Wirtgen Gmbh Self-propelled milling machine having a machine frame and a conveyor device for removing material

Also Published As

Publication number Publication date
DE19951646A1 (de) 2001-05-23
AU1387801A (en) 2001-05-08

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