EP3051024A1 - Procédé de surveillance d'un dispositif de chauffage de madrier de finisseuse de route - Google Patents

Procédé de surveillance d'un dispositif de chauffage de madrier de finisseuse de route Download PDF

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Publication number
EP3051024A1
EP3051024A1 EP15003553.3A EP15003553A EP3051024A1 EP 3051024 A1 EP3051024 A1 EP 3051024A1 EP 15003553 A EP15003553 A EP 15003553A EP 3051024 A1 EP3051024 A1 EP 3051024A1
Authority
EP
European Patent Office
Prior art keywords
heating
screed
measured
current
temperature
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.)
Granted
Application number
EP15003553.3A
Other languages
German (de)
English (en)
Other versions
EP3051024B1 (fr
Inventor
Eberhard Lürding
Rainer Kruse
Jonas Figge
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.)
Dynapac GmbH
Original Assignee
Dynapac 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 Dynapac GmbH filed Critical Dynapac GmbH
Publication of EP3051024A1 publication Critical patent/EP3051024A1/fr
Application granted granted Critical
Publication of EP3051024B1 publication Critical patent/EP3051024B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/10—Heated screeds

Definitions

  • the invention relates to a method for monitoring a screed heater according to the preamble of claim 1.
  • the screed can be both operatorunver baselich, but also designed as a so-called Vario plank with variable working width.
  • Screeds known road pavers are provided with a heater.
  • the usually electric heater is powered by a generator with electrical energy.
  • the generator is driven by the internal combustion engine of the paver.
  • the heater serves to heat a bottom of the screed, in particular a screed base plate arranged under the same. This should be prevented in particular the adhesion of the freshly installed paving material under this compacting screed compacting.
  • the screed base plate is divided into different heating sections. These heating sections may vary depending on the type of screed and requirement or application in their shape and condition.
  • the heating sections furthermore have heating elements and / or heating resistors, by means of which the plank base plate is heated.
  • each individual heating section is at least one measuring transmitter, in particular a temperature measuring device assigned. These temperatures are checked by a control unit during operation of the screed and compared with the predetermined target value. Furthermore, screeds are known in which the current or the voltage at each heating section, preferably at each heating element or heating resistor, is measured. These current measured values are also compared by the control unit with predetermined desired values. If the measured value deviates from a desired value, the defective heating segment or heating elements can be determined.
  • each heating section for each heating element or heating resistor, a current measuring device is necessary. These current measuring devices generate a large number of measuring signals which have to be read in and evaluated by the control unit. Furthermore, each current measuring device of the heating sections must have a power supply and data lines. The necessary wiring of each current measuring device is therefore associated with a considerable manufacturing effort, which also carries an increased risk of errors or defects in itself.
  • the invention is therefore based on the object to provide a method by which the heating of the screed is done in a simple and reliable manner.
  • a method for achieving the stated object has the measures of claim 1. Accordingly, it is provided according to the invention that, in the case of a deviation of an actual temperature measured at a heating section from a preset target temperature, all heating sections are switched off, with the exception of the heating section at which the deviating temperature was measured. By switching off all heating sections whose measured actual temperature is identical or only slightly different from the setpoint temperature, the heating section, which appears to have a defect, can be isolated. In the event that several Thompsonsetationen of the target temperature deviate actual temperatures, either all faulty heating sections are turned off, or the heating sections are switched off, preferably according to a weighting of the deviation from the desired value, one after the other.
  • the cause of the deviant temperature can be quickly and easily analyzed and corrected.
  • the value of the target temperature can be adjusted by an operator before commissioning of the screed and is dependent on the road construction material or the screed to be installed.
  • the invention can further provide that by switching off all heating sections, with the exception of the heating section, at which the deviating temperature is measured, the at least one defective heating element is determined, in particular the at least one defective heating resistor or heating element is determined. Since each heating section has at least one heating element or heating element or heating rod, the problem of defective heating of the built-in floor can be broken down by switching off all functioning heating elements to a few heating elements. If this procedure for monitoring the screed heating determines that the heating elements are functioning correctly, the operator knows that the fault is to be found elsewhere in the heating section or its periphery. It is also conceivable that individual heating elements are switched off within the heating section to further narrow down the cause or location of the defect.
  • the invention provides that the electrical current of the heating sections is measured, preferably on at least one of the three phases of an alternator, in particular while all heating sections except the heating section at which the deviating temperature has been measured are switched off.
  • the present invention requires only that the current is measured at the three-phase generator or at the three phases of the alternator and not separately at each individual heating section.
  • the current measured at the alternator should correspond to a predetermined desired value. This also applies if individual or several heating sections are switched off for a correspondingly reduced setpoint value of the current. If it is determined that a heating section does not heat at the predetermined temperature, exactly this one heating section is isolated by switching off all other heating sections.
  • the current value then measured on the three-phase generator does not correspond to the value of the error-free normal operation. Turning off all functional heating sections will reduce the current measurement to a current measurement accurate to that heating section that is faulty. In this way, each of the heating sections can be quickly and reliably checked for the cause of the malfunction in the event of a deviating actual temperature.
  • a further advantageous embodiment of the present invention provides that the current measured at the three-phase generator, in particular while all heating sections except the defective heating section are switched off, are compared with current reference values, which are preferably during a calibration procedure the screed were stored.
  • the screed or the heating sections are subjected to a calibration measurement.
  • the current at the alternator for each heating section is measured for each operating temperature in accordance with the measured actual value and the target value for each heating section, in particular while all other heating sections are turned off.
  • These current values are stored in a control unit and used for monitoring or analyzing each individual heating section.
  • the currents measured at the individual heating sections may differ from each other. This means that the values for all heating sections are stored and utilized centrally in the control unit. This pooling of resources makes the whole process simpler and thus cheaper and more reliable.
  • the present invention can further provide that the faulty heating section, preferably the defective heating resistor or the defective heating element, is located on the screed by measuring the current.
  • each heating section has a plurality of heating resistors or heating rods, which all have a certain internal resistance.
  • the measured current or the resistance determined therefrom provides information about which heating resistor or heating element is defective. This has the advantage that specifically only the or the heating resistors or heating rods must be removed or replaced which are defective.
  • the invention further provides that the current at the three-phase generator is measured continuously or intermittently during operation of the screed, in particular for current measurement are all switched off cyclically except for a heating section and the measured current value is compared with a predetermined value.
  • all the heating sections except for at least one heating section are temporarily turned off to measure the current for the remaining heating section. This switching off and on of the heating sections takes place in such a way that the temperatures of the heating sections do not change or only slightly change.
  • each individual heating section can be checked for potential defects and if necessary, take preventive measures to ensure trouble-free operation of the screed.
  • the invention further provides that the actual temperature of each heating section is compared with the setpoint temperature of each heating section continuously or intermittently during operation of the screed.
  • the temperature of the heating section is adjusted with the preset temperature to be preset, even if there is no error message.
  • the invention further provides that in the event of a deviation between the measured actual temperature value and the predefinable setpoint temperature value, a signal is generated, in particular a signal is generated on the display of an operating unit.
  • a signal is generated on the display of an operating unit.
  • the control device begins directly with the shutdown of fault-free heating sections, or the operator assesses the situation first, and then optionally turn off the heating sections.
  • This signal can be optical and / or acoustic.
  • the signal is transmitted via a wireless connection to a control device in order to obtain further information or commands from there.
  • the invention further provides that the temperature and / or the current are measured by a control unit having a microcontroller and / or compared with reference values.
  • This control unit can be inventively integrated on the paver in the screed or to the generator, or assigned to an external control unit. Depending on the operating mode, this control unit can be operated fully automatically or operated by an operator.
  • the microcontroller having control unit stores all measured temperature and current values, even if no differences of the current or temperature values are detected. It also serves as documentation for a trouble-free or trouble-free installation of the road surface.
  • the screed 10 shown in the figure has four heating sections 11, 12, 13, 14.
  • the method of the invention is not limited to this number of heating sections; Rather, it is conceivable that the screed has a larger number of heating sections.
  • Each heating section 11 to 14 is associated with a temperature sensor, not shown.
  • the temperatures measured by the temperature transmitters are supplied via signal lines 15 to a control unit 16 having a microcontroller.
  • the arrow 17 marks the direction in which the temperature information of the heating section 11 to 14 is transported through the signal line 15.
  • control unit 16 10 set temperatures are stored before starting the screed.
  • the temperature values (actual values) measured at the individual heating sections 11 to 14 are compared by the control unit 16 with the desired values.
  • the adjustment of the temperature values or the current actual temperature values can be displayed on a display 18.
  • the individual heating sections 11 to 14 have not shown electrical heating resistors or heating rods. These heating resistors or heating rods are powered by an alternator 19 with electrical energy.
  • the alternator 19 is driven by a primary combustion engine, not shown. All three phases 20 of the alternator 19 are fed to a cabinet 21. Starting from this cabinet 21, each heating section 11 to 14 is supplied via a respective line 22 with electrical energy.
  • the control cabinet 21 is used in particular for the protection of the heating sections 11 to 14 and has corresponding fuses and switches.
  • the current is measured by a current measuring device 23 on all three phases 20.
  • the measured current is supplied to the control unit 16 through a further line 24.
  • current values are stored, which were recorded during a calibration of the screed 10 prior to the production of the road surface.
  • the current measured values for the operation of the screed 10 were determined, that is, in the event that all the heating sections 11 to 14 are functioning correctly; and the current values for individual heating sections 11 or 12 or 13 or 14, while the other heating sections 11 to 14 are switched off. These nominal current values of the calibration are used during the Operation of the screed 10 measured current values compared by the control unit 16.
  • a deviation of a measured actual temperature at one of the heating sections 11 to 14 is determined by a target temperature, a corresponding signal is generated by the control unit 16 and forwarded to the cabinet 21, so that all heating sections with Except the heating section, where the deviating actual temperature was measured, be switched off.
  • the current at at least one of the phases 20 is measured by the current measuring device 23 and transmitted to the control unit 16.
  • the control unit 16 determines whether a heating resistor or a heating rod of the corresponding heating section is defective.
  • the control unit 16 also determines how many heating resistors or heating elements in the heating section are defective and, if appropriate, which heating resistance or which heating element is defective.
  • the deviating actual temperature or in the event that a measured actual temperature deviates from a desired value this is shown on the display 18. Additionally or alternatively, the deviation can also be supported by an acoustic signal.
  • the current value measured on the defective heating sections is displayed on the display 18 and the defective heating section is named. As soon as the cause of the deviating temperature value has been determined, the fault can be corrected by replacing the heating element or the heating resistor.
  • Such an adjustment of the actual temperature with the target temperature is carried out according to the invention continuously or cyclically during the entire production process of the road surface. Furthermore, it is provided according to the invention that the heating sections 11 to 14 are switched on and off cyclically and in each case the current value is determined by the current measuring device 23 at the phases 20 and compared with the calibrated desired values.
  • the described method according to the invention can be implemented on already finished and possibly delivered road pavers.
  • the screed or a paver can thus be retrofitted with the described method.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP15003553.3A 2015-01-28 2015-12-12 Procédé de surveillance d'un dispositif de chauffage de madrier de finisseuse de route Active EP3051024B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015000943.5A DE102015000943A1 (de) 2015-01-28 2015-01-28 Verfahren zur Überwachung einer Bohlenheizung eines Straßenfertigers

Publications (2)

Publication Number Publication Date
EP3051024A1 true EP3051024A1 (fr) 2016-08-03
EP3051024B1 EP3051024B1 (fr) 2018-11-21

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EP15003553.3A Active EP3051024B1 (fr) 2015-01-28 2015-12-12 Procédé de surveillance d'un dispositif de chauffage de madrier de finisseuse de route

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EP (1) EP3051024B1 (fr)
DE (1) DE102015000943A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114108426A (zh) * 2020-08-27 2022-03-01 约瑟夫福格勒公司 用于调节道路摊铺机的熨平板的熨平板底板的温度的方法
EP4116493A1 (fr) * 2021-07-07 2023-01-11 Joseph Vögele AG Finisseuse de route pourvue d'un dispositif de chauffage, ainsi que procédé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230357997A1 (en) 2022-05-06 2023-11-09 Caterpillar Paving Products Inc. Monitoring insulation resistance of a screed assembly of a paving machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602820A1 (de) * 1986-01-30 1987-08-06 Windmoeller & Hoelscher Verfahren zur ueberpruefung der funktionsfaehigkeit von parallel geschalteten lastwiderstaenden
DE20305577U1 (de) * 2003-04-07 2004-08-19 Joseph Vögele AG Straßenfertiger
US20140253139A1 (en) * 2013-03-08 2014-09-11 Caterpillar Inc. Fault detection system with leakage current detection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3595000A (en) * 1999-02-11 2000-08-29 Ingersoll-Rand Company Automatically regulated heating system for paving screed

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602820A1 (de) * 1986-01-30 1987-08-06 Windmoeller & Hoelscher Verfahren zur ueberpruefung der funktionsfaehigkeit von parallel geschalteten lastwiderstaenden
DE20305577U1 (de) * 2003-04-07 2004-08-19 Joseph Vögele AG Straßenfertiger
US20140253139A1 (en) * 2013-03-08 2014-09-11 Caterpillar Inc. Fault detection system with leakage current detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114108426A (zh) * 2020-08-27 2022-03-01 约瑟夫福格勒公司 用于调节道路摊铺机的熨平板的熨平板底板的温度的方法
CN114108426B (zh) * 2020-08-27 2024-01-05 约瑟夫福格勒公司 用于调节道路摊铺机的熨平板的熨平板底板的温度的方法
EP4116493A1 (fr) * 2021-07-07 2023-01-11 Joseph Vögele AG Finisseuse de route pourvue d'un dispositif de chauffage, ainsi que procédé

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Publication number Publication date
EP3051024B1 (fr) 2018-11-21
DE102015000943A1 (de) 2016-07-28

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