EP0690175B1 - Airless spray process for applying marking lines on roads and apparatus to carry out the process - Google Patents
Airless spray process for applying marking lines on roads and apparatus to carry out the process Download PDFInfo
- Publication number
- EP0690175B1 EP0690175B1 EP95108956A EP95108956A EP0690175B1 EP 0690175 B1 EP0690175 B1 EP 0690175B1 EP 95108956 A EP95108956 A EP 95108956A EP 95108956 A EP95108956 A EP 95108956A EP 0690175 B1 EP0690175 B1 EP 0690175B1
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- European Patent Office
- Prior art keywords
- spray
- section
- outlet cross
- pressure
- process according
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- 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.)
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- 239000007921 spray Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 20
- 230000001419 dependent effect Effects 0.000 claims abstract description 6
- 239000003973 paint Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- 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
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
- E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
- B05B12/04—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for sequential operation or multiple outlets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/06—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump the delivery being related to the movement of a vehicle, e.g. the pump being driven by a vehicle wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
Definitions
- the invention relates to a method for manufacturing of marking lines made of marking substances, hereinafter only still called paints, using the so-called airless process (without compressed air), and onto one Device for performing the method.
- DE-U-94 00 234 discloses a road marking machine with at least two outlets for marking material which can be opened and closed independently of one another and a non- metering feed pump which conveys the marking material to the outlets and the marking material which does not emerge from the outlets by one of the pressure side of the feed pump leading return duct back to the suction side of the feed pump or to the reservoir for the marking substance, with at least one of the ducts leading to the feed pump and leading away from the feed pump having a flow cross-section that changes depending on the number and the total cross section of the opened outlets Throttle device has.
- DE-A-39 42 496 describes apparatus and methods for Announcement of the application of binder on surfaces, in which a pump, a flow meter and a controller (computer) in the driving speed can also be entered, one Form a control loop. Depending on the driving speed, the desired quantity per surface unit and the spray width, which are specified via the number of open spray nozzles the amount of binder is dosed.
- the invention has for its object an airless spray process and an apparatus for performing the method indicate at which the vehicle speed range in which the Driving speed of the marking machine without quality and Layer thickness change of the marking lines is changeable at reasonable effort is significantly increased.
- the task is solved with a method using the Features of claim 1 and with a device the features of claim 6. This makes the total outlet cross section out of the spray nozzle (s) when the vehicle speed changes changed so that for a flawless Do not leave the spray pattern quality within the permissible spray pressure range becomes.
- the permissible spray pressure range about the number of open nozzles.
- the color throughput increases as the marking machine accelerates through the spray nozzles and thus also the spray pressure, then is another if the permissible maximum pressure is exceeded Open nozzle, whereupon the spray pressure is reduced.
- decelerating the machine i.e. decreasing Color throughput and thus decreasing spray pressure when falling below the necessary minimum pressure to close a spray nozzle, whereupon the spray pressure rises again.
- a further embodiment of the invention provides for the provision of a plurality of nozzles with different outlet cross sections, of which the one that is currently being opened is the one that generates a spray pressure within the permissible pressure range in the currently occurring flow of paint. If, when the marking machine accelerates, the paint throughput increases through the opened spray nozzle and thus also the spray pressure, then when the permissible maximum pressure is exceeded, the system switches to the next largest nozzle, whereupon the spray pressure is reduced. Conversely, when the marking machine is decelerated, ie when the ink throughput decreases and thus the spray pressure drops when the required minimum pressure is undershot, the system switches to the next smaller nozzle. So only one spray nozzle is always open.
- the invention of changing the total outlet cross section automatically controlled depending on the driving speed will. That sets the knowledge of the injection pressure course for each of the nozzles used depending on the color viscosity and that proportional to the driving speed Color flow ahead.
- a driving speed sensor is for this purpose connected to a wheel of the device.
- a pump 1 sucks paint from a reservoir 2 and feeds them through a paint line 3 to a group of spraying devices, which in the example shown consists of three spray devices 4a, 4b and 4c. These are like this in the direction of travel arranged one behind the other that their spray compartments 5a, 5b and 5c - seen here from the side perpendicular to the direction of travel - in one common line on the surface 6 to be coated (road surface) meet, or as shown on of this surface in short intervals.
- the ink delivery from pump 1 is proportional to the driving speed the marking machine, as is the case if the pump 1, as shown in the figure, has a slip-free transmission 7 by a rolling on the surface 6 Friction wheel 8 is driven.
- the spray devices 4a, 4b and 4c are with spray nozzles 9a, 9b and 9c, which are divided by actuators 10a, 10b and 10c (e.g. pneumatic cylinders, hydraulic cylinders, electromagnets) open and close.
- the control of the actuators 10a, 10b and 10c are each done individually a control unit 11.
- a sensor is connected to the control unit 11 12 connected, which supplies a signal, the size of which depends of color printing in the color line 3.
- the sensor 12 can be on the line 3 may be arranged or at another location of the system, where forces occur that are dependent on the color printing in line 3, e.g. B. as sensor 12a on the transmission 7.
- the values for a required Minimal color printing and a permissible maximum color printing adjustable With one emitted by the sensor 12 or 12a Signal curve for increasing color printing - i.e. when accelerating the marking machine - will be when the value for the Maximum pressure triggered a control command to enlarge of the nozzle outlet cross section is used. In one of the Sensor 12 or 12a emitted signal curve for falling color printing - So if the marking machine is delayed - will A control command is triggered when the minimum pressure value is reached, which is used to reduce the outlet cross-section becomes.
- the command triggered when the maximum pressure is reached closes the currently open one and opens the nozzle with the next larger outlet cross section.
- the command triggered closes the just opened nozzle and opens the nozzle with the next smaller cross section.
- a vehicle speed sensor can be used 13 are used, for example the wheel 8 rolling on the surface 6 is attached and a Emits a signal, the size of which depends on the driving speed. Since the ink delivery rate is proportional to the driving speed, and the resulting color print depends on the outlet cross-section of the opened nozzles, each total outlet cross section assign a driving speed. The permissible maximum pressure then corresponds to a given outlet cross section a maximum permissible driving speed, the minimum required Print a minimum required speed. On The control unit 11 is therefore in this alternative for everyone available total outlet cross section minimum required and the maximum permissible driving speed adjustable, when reached control commands are triggered be a corresponding change as already described of the total outlet cross section.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
- Toys (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Markierungslinien aus Markierungsstoffen, nachfolgend nur noch Farben genannt, die mit Hilfe des sogenannte Airless-Verfahrens (ohne Druckluft) verspritzt werden, und auf eine Vorrichtung zur Durchführung des Verfahrens. The invention relates to a method for manufacturing of marking lines made of marking substances, hereinafter only still called paints, using the so-called airless process (without compressed air), and onto one Device for performing the method.
Bei den bekannten Verfahren erhält der aus einer Spritzdüse austretende Flachstrahl die gewünschte Form nur durch die geometrische Form der Düse und die Geschwindigkeit der durch die Düse hindurchströmenden Farbe. Die Austrittsgeschwindigkeit ist dabei abhängig von der Viskosität der Farbe, dem Druck und dem Querschnitt der Düsenöffnung. In the known methods, it receives from a spray nozzle emerging flat jet the desired shape only through the geometric shape of the nozzle and the speed of through the Paint flowing through the nozzle. The exit speed is depending on the viscosity of the color, the pressure and the Cross section of the nozzle opening.
Es hat sich in der Praxis gezeigt, daß der nutzbare Druckbereich, in welchem sich der gewünschte Farbflachstrahl für die gewünschte Qualität der Markierungslinien ausbildet, etwa vom minimalen nutzbaren Druck bis zum 1,5-fachen dieses minimalen Druckes reicht. Bei einem Druckanstieg um 50 % wächst nach den Gesetzen der Physik die Farbdurchflußmenge um 23 %. It has been shown in practice that the usable pressure range, in which the desired color flat jet for the the desired quality of the marking lines, for example from minimum usable pressure up to 1.5 times this minimum Pressure is enough. With a pressure increase of 50% grows after the Laws of physics the color flow rate by 23%.
Bei einer zugehörigen Vorrichtung, nämlich einer Markierungsmaschine, bei der die Farbfördermenge zwecks Erzielung eines auch bei variierender Fahrgeschwindigkeit gleichbleibend dicken Farbauftrages auf einer zur Fahrgeschwindigkeit proportionalen Größe gehalten wird, darf deshalb die Fahrgeschwindigkeit auch nur in diesem Bereich variieren, bei dem die maximale Geschwindigkeit um ca. 23 % größer ist als die minimale, wenn die gewünschte Qualität der Markierungslinien eingehalten werden soll. With an associated device, namely a marking machine, in which the amount of ink delivered to achieve one constant even with varying driving speed thick paint application on a proportional to the driving speed Size is kept, therefore the driving speed even vary only in this range, at which the maximum Speed is about 23% greater than the minimum, though the desired quality of the marking lines are observed should.
Dieser schmale Fahrgeschwindigkeitsbereich mit dem bekannten Verfahren und der zugehörigen Vorrichtung ist in der Praxis von Nachteil. This narrow driving speed range with the known Method and associated device is in practice disadvantageous.
Aus der DE-U-94 00 234 ist eine Straßenmarkiermaschine mit mindestens zwei unabhängig voneinander zu öffnenden und zu schließenden Auslässen für Markierungsstoff und einer nicht dosierenden Förderpumpe bekannt, die den Markierungsstoff zu den Auslässen fördert und den nicht aus den Auslässen austretenden Markierungsstoff durch einen von der Druckseite der Förderpumpe wegführenden Rücklaufkanal zur Ansaugseite der Förderpumpe bzw. zum Vorratsbehälter für den Markierungsstoff zurückführt, wobei mindestens einer der zur Förderpumpe hinführenden und von der Förderpumpe wegführenden Kanäle ein in Abhängigkeit von der Anzahl und vom Gesamtquerschnitt der geöffneten Auslässe zu verstellendes, den Durchflußquerschnitt veränderndes Drosselorgan aufweist. DE-U-94 00 234 discloses a road marking machine with at least two outlets for marking material which can be opened and closed independently of one another and a non- metering feed pump which conveys the marking material to the outlets and the marking material which does not emerge from the outlets by one of the pressure side of the feed pump leading return duct back to the suction side of the feed pump or to the reservoir for the marking substance, with at least one of the ducts leading to the feed pump and leading away from the feed pump having a flow cross-section that changes depending on the number and the total cross section of the opened outlets Throttle device has.
Hier liegt die Aufgabe zugrunde, bei vorgenommenen Veränderungen des Gesamtauslaßquerschnittes bei einer sich mit gleichmäßiger Geschwindigkeit vorwärts bewegenden Auftragsvorrichtung den Markierungsstoffdruck vor den Auslässen konstant zu halten, damit die pro Querschnittseinheit des Gesamtauslaßquerschnittes ausfließende Markierungsstoffmenge und somit auch die Schichtdicke des Auftrags unverändert bleibt. This is the basis of the task when changes are made of the total outlet cross-section at a with even Applicator speed moving forward Keeping the marking substance pressure in front of the outlets constant, thus the per cross-sectional unit of the total outlet cross-section outflowing amount of marking material and thus also the layer thickness the order remains unchanged.
In der DE-A-39 42 496 werden Vorrichtung und Verfahren zur Bindemittelauftragung auf Oberflächen bekanntgemacht, bei dem eine Pumpe, ein Durchflußmesser und ein Regler (Rechner), in den auch die Fahrgeschwindigkeit eingegeben werden kann, einen Regelkreis bilden. In Abhängigkeit von der Fahrgeschwindigkeit, der gewünschten Menge pro Oberflächeneinheit und der Spritzbreite, die über die Anzahl der geöffneten Spritzdüsen vorgegeben wird, wird die Bindemittelmenge dosiert. DE-A-39 42 496 describes apparatus and methods for Announcement of the application of binder on surfaces, in which a pump, a flow meter and a controller (computer) in the driving speed can also be entered, one Form a control loop. Depending on the driving speed, the desired quantity per surface unit and the spray width, which are specified via the number of open spray nozzles the amount of binder is dosed.
Der Erfindung liegt die Aufgabe zugrunde, ein Airless-Spritzverfahren und eine Vorrichtung zur Durchführung des Verfahrens anzugeben, bei der der Fahrgeschwindigkeitsbereich, in dem die Fahrgeschwindigkeit der Markierungsmaschine ohne Qualitäts- und Schichtdickenänderung der Markierungslinien änderbar ist, bei vertretbarem Aufwand wesentlich vergrößert ist. The invention has for its object an airless spray process and an apparatus for performing the method indicate at which the vehicle speed range in which the Driving speed of the marking machine without quality and Layer thickness change of the marking lines is changeable at reasonable effort is significantly increased.
Die Lösung der Aufgabe erfolgt mit einem Verfahren mit den Merkmalen des Patentanspruches 1 und mit einer Vorrichtung mit den Merkmalen des Patentanspruches 6. Dadurch wird der Gesamtauslaßquerschnitt aus der oder den Spritzdüsen bei Fahrgeschwindigkeitsänderungen so verändert, daß der für eine einwandfreie Spritzbildqualität zulässige Spritzdruckbereich nicht verlassen wird. The task is solved with a method using the Features of claim 1 and with a device the features of claim 6. This makes the total outlet cross section out of the spray nozzle (s) when the vehicle speed changes changed so that for a flawless Do not leave the spray pattern quality within the permissible spray pressure range becomes.
Bevorzugt sind zur Anpassung des Gesamtauslaßquerschnittes mehrere Spritzdüsen vorgesehen, wobei der zulässige Spritzdruckbereich über die Anzahl der geöffneten Düsen eingehalten wird. Wächst beim Beschleunigen der Markierungsmaschine der Farbdurchsatz durch die Spritzdüsen und damit auch der Spritzdruck, dann ist bei Überschreiten des zulässigen Maximaldruckes eine weitere Düse zu öffnen, worauf sich der Spritzdruck reduziert. Im Umkehrfall ist beim Verzögern der Maschine, also bei abnehmendem Farbdurchsatz und damit abnehmendem Spritzdruck bei Unterschreiten des notwendigen Mindestdruckes eine Spritzdüse zu schließen, worauf der Spritzdruck wieder ansteigt. Are preferred to adjust the total outlet cross section Several spray nozzles are provided, the permissible spray pressure range about the number of open nozzles. The color throughput increases as the marking machine accelerates through the spray nozzles and thus also the spray pressure, then is another if the permissible maximum pressure is exceeded Open nozzle, whereupon the spray pressure is reduced. In the opposite case is decelerating the machine, i.e. decreasing Color throughput and thus decreasing spray pressure when falling below the necessary minimum pressure to close a spray nozzle, whereupon the spray pressure rises again.
Eine weitere Ausgestaltung der Erfindung sieht die Bereithaltung mehrerer Düsen mit unterschiedlichen Austrittsquerschnitten vor, von denen jeweils gerade diejenige geöffnet wird, die bei dem momentan auftretenden Farbdurchfluß einen im zulässigen Druckbereich liegenden Spritzdruck erzeugt. Wächst beim Beschleunigen der Markierungsmaschine der Farbdurchsatz durch die geöffnete Spritzdüse und damit auch der Spritzdruck, dann wird bei Überschreiten des zulässigen Maximaldruckes auf die nächstgrößere Düse umgeschaltet, worauf sich der Spritzdruck reduziert. Im Umkehrfall wird beim Verzögern der Markierungsmaschine, d. h. bei abnehmendem Farbdurchsatz und damit abnehmendem Spritzdruck bei Unterschreiten des notwendigen Mindestdrukkes auf die nächstkleinere Düse umgeschaltet. Es ist also nur immer eine Spritzdüse geöffnet. A further embodiment of the invention provides for the provision of a plurality of nozzles with different outlet cross sections, of which the one that is currently being opened is the one that generates a spray pressure within the permissible pressure range in the currently occurring flow of paint. If, when the marking machine accelerates, the paint throughput increases through the opened spray nozzle and thus also the spray pressure, then when the permissible maximum pressure is exceeded, the system switches to the next largest nozzle, whereupon the spray pressure is reduced. Conversely, when the marking machine is decelerated, ie when the ink throughput decreases and thus the spray pressure drops when the required minimum pressure is undershot, the system switches to the next smaller nozzle. So only one spray nozzle is always open.
Nach einer weiteren Ausgestaltung der Erfindung wird der Zeitpunkt der Änderung des Gesamtauslaßquerschnittes automatisch in Abhängigkeit vom Verlauf des Spritzdruckes gesteuert. Dazu wird über einen Sensor der Spritzdruck in der Farbleitung zur Spritzdüse oder ein anderer dem Spritzdruck entsprechender Kraftwert im Antrieb einer Farbpumpe gemessen und einem Steuergerät zugeführt, in dem der erforderliche minimale und zulässige maximale Spritzdruck vorgebbar sind. Bei Erreichen des maximalen Spritzdruckes gibt das Steuergerät einen Schaltbefehl zur Vergrößerung des Gesamtauslaßquerschnittes, bei Erreichen des minimalen Spritzdruckes einen Schaltbefehl zur Verkleinerung des Gesamtauslaßquerschnittes. According to a further embodiment of the invention Automatic change of the total outlet cross section controlled depending on the course of the spray pressure. To becomes the spray pressure in the paint line via a sensor Spray nozzle or another corresponding to the spray pressure Force value measured in the drive of a paint pump and a control unit fed in the required minimum and allowable maximum spray pressure can be specified. When the maximum is reached Spray pressure gives the control unit a switching command to enlarge of the total outlet cross-section when the minimum is reached Spray pressure a switching command to reduce the total outlet cross section.
Alternativ dazu kann aber auch nach einer anderen Ausgestaltung der Erfindung die Änderung des Gesamtauslaßquerschnittes automatisch in Abhängigkeit von der Fahrgeschwindigkeit gesteuert werden. Das setzt die Kenntnis des Spritzdruckverlaufes für jede der zur Anwendung kommenden Düsen in Abhängigkeit von der Farbviskosität und dem zur Fahrgeschwindigkeit proportionalen Farbdurchfluß voraus. Ein Fahrgeschwindigkeitssensor ist hierzu mit einem Rad der Vorrichtung verbunden. As an alternative, however, it can also have a different configuration the invention of changing the total outlet cross section automatically controlled depending on the driving speed will. That sets the knowledge of the injection pressure course for each of the nozzles used depending on the color viscosity and that proportional to the driving speed Color flow ahead. A driving speed sensor is for this purpose connected to a wheel of the device.
Eine bevorzugte Ausgestaltung der Erfindung wird nunmehr anhand einer einzigen Figur näher erläutert. A preferred embodiment of the invention will now explained in more detail using a single figure.
Eine Pumpe 1 saugt Farbe aus einem Vorratsbehälter 2 und fördert sie durch eine Farbleitung 3 zu einer Gruppe von Spritzvorrichtungen, die im dargestellten Beispiel aus drei Spritzvorrichtungen 4a, 4b und 4c besteht. Diese sind in Fahrtrichtung so hintereinander angeordnet, daß ihre Spritzfächer 5a, 5b und 5c - hier von der Seite senkrecht zur Fahrrichtung gesehen - in einer gemeinsamen Linie auf der zu beschichtenden Oberfläche 6 (Straßenoberfläche) zusammentreffen, oder aber wie dargestellt auf dieser Fläche in kleinen Abständen hintereinander auftreffen. Die Farbfördermenge aus der Pumpe 1 ist proportional zur Fahrgeschwindigkeit der Markierungsmaschine, so wie es der Fall ist, wenn die Pumpe 1, wie in der Figur dargestellt, über eine schlupffreie Transmission 7 durch ein auf der Fläche 6 abrollendes Reibrad 8 angetrieben wird. A pump 1 sucks paint from a reservoir 2 and feeds them through a paint line 3 to a group of spraying devices, which in the example shown consists of three spray devices 4a, 4b and 4c. These are like this in the direction of travel arranged one behind the other that their spray compartments 5a, 5b and 5c - seen here from the side perpendicular to the direction of travel - in one common line on the surface 6 to be coated (road surface) meet, or as shown on of this surface in short intervals. The ink delivery from pump 1 is proportional to the driving speed the marking machine, as is the case if the pump 1, as shown in the figure, has a slip-free transmission 7 by a rolling on the surface 6 Friction wheel 8 is driven.
Die Spritzvorrichtungen 4a, 4b und 4c sind mit Spritzdüsen 9a, 9b und 9c bestückt, die sich durch Betätigungsglieder 10a, 10b und 10c (z. B. Pneumatikzylinder, Hydraulikzylinder, Elektromagnete) öffnen und schließen lassen. Die Ansteuerung der Betätigungsglieder 10a, 10b und 10c erfolgt jeder für sich von einem Steuergerät 11 aus. An das Steuergerät 11 ist ein Sensor 12 angeschlossen, der ein Signal liefert, dessen Größe abhängig vom Farbdruck in der Farbleitung 3 ist. Der Sensor 12 kann an der Leitung 3 angeordnet sein oder auch an einer anderen Stelle des Systems, wo Kräfte auftreten, die abhängig sind vom Farbdruck in der Leitung 3, z. B. als Sensor 12a an der Transmission 7. The spray devices 4a, 4b and 4c are with spray nozzles 9a, 9b and 9c, which are divided by actuators 10a, 10b and 10c (e.g. pneumatic cylinders, hydraulic cylinders, electromagnets) open and close. The control of the actuators 10a, 10b and 10c are each done individually a control unit 11. A sensor is connected to the control unit 11 12 connected, which supplies a signal, the size of which depends of color printing in the color line 3. The sensor 12 can be on the line 3 may be arranged or at another location of the system, where forces occur that are dependent on the color printing in line 3, e.g. B. as sensor 12a on the transmission 7.
An dem Steuergerät 11 sind die Werte für einen erforderlichen Minimal-Farbdruck und einen zulässigen Maximal-Farbdruck einstellbar. Bei einem von dem Sensor 12 bzw. 12a abgegebenen Signalverlauf für steigenden Farbdruck - also bei Beschleunigung der Markierungsmaschine - wird bei Erreichen des Wertes für den Maximaldruck ein Steuerbefehl ausgelöst, der zur Vergrößerung des Düsenauslaßquerschnittes verwendet wird. Bei einem vom dem Sensor 12 bzw. 12a abgegebenen Signalverlauf für fallenden Farbdruck - also bei Verzögerung der Markierungsmaschine - wird bei Erreichen des Wertes für den Minimaldruck ein Steuerbefehl ausgelöst, der zur Verkleinerung des Auslaßquerschnittes verwendet wird. At the control device 11, the values for a required Minimal color printing and a permissible maximum color printing adjustable. With one emitted by the sensor 12 or 12a Signal curve for increasing color printing - i.e. when accelerating the marking machine - will be when the value for the Maximum pressure triggered a control command to enlarge of the nozzle outlet cross section is used. In one of the Sensor 12 or 12a emitted signal curve for falling color printing - So if the marking machine is delayed - will A control command is triggered when the minimum pressure value is reached, which is used to reduce the outlet cross-section becomes.
Wird die Änderung des Gesamtauslaß-Querschnittes über die Anzahl von gleichgroßen Spritzdüsen 9a, 9b, 9c vorgenommen, bewirkt jedesmal der bei Erreichen des Maximaldruckes ausgelöste Befehl die Öffnung einer der bis dahin geschlossenen Düsen. Bei Erreichen des Minimaldruckes dagegen wird jedesmal eine der bis dahin geöffneten Düsen geschlossen. If the change in the total outlet cross-section over the Number of equally large spray nozzles 9a, 9b, 9c, always causes the one triggered when the maximum pressure is reached Order the opening of one of the previously closed nozzles. At On the other hand, when the minimum pressure is reached, one of the to open nozzles closed there.
Wird die Änderung des Auslaßquerschnittes über das Öffnen nur einer Düse mit dem passenden Querschnitt aus einer Auswahl von Düsen 9a, 9b, 9c mit verschiedenen Querschnitten vorgenommen, bewirkt der bei Erreichen des Maximaldruckes ausgelöste Befehl das Schließen der gerade geöffneten und ein Öffnen der Düse mit dem nächstgrößeren Auslaßquerschnitt. Bei Erreichen des Minimaldruckes dagegen bewirkt der ausgelöste Befehl das Schließen der gerade geöffneten Düse und das Öffnen der Düse mit dem nächstkleineren Querschnitt. If the change in the outlet cross-section is made by opening only one nozzle with the appropriate cross-section from a selection of nozzles 9a, 9b, 9c with different cross-sections, the command triggered when the maximum pressure is reached closes the currently open one and opens the nozzle with the next larger outlet cross section. On the other hand, when the minimum pressure is reached, the command triggered closes the just opened nozzle and opens the nozzle with the next smaller cross section.
Alternativ zu den Sensoren 12 bzw. 12a kann ein Fahrgeschwindigkeitsensor 13 eingesetzt werden, der zum Beispiel an dem auf der Fläche 6 abrollenden Rad 8 angebracht ist und ein Signal abgibt, dessen Größe von der Fahrgeschwindigkeit abhängt. Da die Farbfördermenge proportional zur Fahrgeschwindigkeit ist, und der entstehende Farbdruck abhängig ist vom Austrittsquerschnitt der geöffneten Düsen, läßt sich jedem Gesamtauslaßquerschnitt eine Fahrgeschwindigkeit zuordnen. Dem zulässigen Maximaldruck entspricht dann bei einem gegebenen Auslaßquerschnitt eine maximal zulässige Fahrgeschwindigkeit, dem minimal erforderlichen Druck eine minimal erforderliche Geschwindigkeit. An dem Steuergerät 11 ist bei dieser Alternative deshalb für jeden zur Verfügung stehenden geöffneten Gesamtauslaßquerschnitt die minimal erforderliche und die maximal zulässige Fahrgeschwindigkeit einstellbar, bei deren Erreichen Steuerbefehle ausgelöst werden, die wie bereits beschrieben eine entsprechende Änderung des Gesamtauslaßquerschnittes bewirken. As an alternative to sensors 12 or 12a, a vehicle speed sensor can be used 13 are used, for example the wheel 8 rolling on the surface 6 is attached and a Emits a signal, the size of which depends on the driving speed. Since the ink delivery rate is proportional to the driving speed, and the resulting color print depends on the outlet cross-section of the opened nozzles, each total outlet cross section assign a driving speed. The permissible maximum pressure then corresponds to a given outlet cross section a maximum permissible driving speed, the minimum required Print a minimum required speed. On The control unit 11 is therefore in this alternative for everyone available total outlet cross section minimum required and the maximum permissible driving speed adjustable, when reached control commands are triggered be a corresponding change as already described of the total outlet cross section.
Claims (11)
- Process for applying marking lines on roads with airless sprayed marking substances,
characterized in
that the spray pressure is varied dependent on the travelling speed and the application speed, and that the total outlet cross section is enlarged at a growing spray pressure when a preselected maximal pressure is exceeded, and that the total outlet cross section for the marking substance is reduced when a preselected minimal pressure is undershot. - Process according to claim 1,
characterized in
that several spray nozzles are provided, and that the variation of the total outlet cross section is attained by varying the number of the opened nozzles. - Process according to claim 1,
characterized in
that several nozzles with different outlet cross sections are provided, and that the variation of the total outlet cross section is attained by closing the nozzle open at present and simultaneously opening another nozzle with a different outlet cross section. - Process according to one of the claims 1 to 3,
characterized in
that the variation of the total outlet cross section is automatically controlled according to a continuous measuring of a force occuring at the spray system dependent on the spray pressure. - Process according to one of the claims 1 to 3,
characterized in
that the variation of the total outlet cross section is automatically controlled while continuously measuring the travelling speed dependent on the travelling speed. - Wheeled apparatus for carrying out the process according to claims 1 to 3, comprising a pump (1), a reservoir (2), a paint duct (3), and a spray device with a spray nozzle,
characterized in
that several spray devices (4a, 4b, 4c) each with a spray nozzle (9a, 9b, 9c) are arranged one behind the other in travelling direction, to be supplied by a combined paint duct (3), and to be energized and deenergized by an adjustable control device (11). - Apparatus according to claim 6,
characterized in
that the several spray devices (4a, 4b, 4c) comprise spray nozzles (9a, 9b, 9c) each with a different outlet cross section. - Apparatus according to claim 6 or 7 for carrying out the process according to the claims 1 to 4,
characterized in
that a sensor (12) is provided in the paint duct (3) operatively connected with the control device (11) which is operatively connected with each of an actuating member (10a, 10b, 10c) each of which is connected with one of the spray devices (4a, 4b, 4c) such that the spray device is to be selectively energized and deenergized by a signal of the sensor (12). - Apparatus according to claim 6 or 7 for carrying out the process according to the claims 1 to 4,
characterized in
that a sensor (12a) is provided at a transmission (7) arranged between the pump (1) and a wheel (8) for moving the apparatus with the sensor (12a) operatively connected with the control device (11) operatively connected with each of an actuating member (10a, 10b, 10c) which is connected with one of the spray devices (4a, 4b, 4c) such that the spray device is to be selctively energized and deenergized by a signal of the sensor (12a). - Apparatus according to claim 6 or 7 for carrying out the process according to the claims 1 to 3, and 5,
characterized in
that at the wheel (8) for moving the apparatus a travelling speed sensor (13) is provided operatively connected with the control device (11) which is operatively connected with each of an actuating member (10a, 10b, 10c) which is connected with one of the spray devices (4a, 4b, 4c) such that the spray device is to be selectively energized and deenergized by a signal of the travelling speed sensor (13). - Apparatus according to claim 9 or 10,
characterized in
that the actuating members (10a, 10b, 10c) are to be actuated pneumatically or hydraulically or electrically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4423304A DE4423304C1 (en) | 1994-07-02 | 1994-07-02 | Method for airless spraying of road markings |
| DE4423304 | 1994-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0690175A1 EP0690175A1 (en) | 1996-01-03 |
| EP0690175B1 true EP0690175B1 (en) | 1998-05-13 |
Family
ID=6522145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95108956A Expired - Lifetime EP0690175B1 (en) | 1994-07-02 | 1995-06-10 | Airless spray process for applying marking lines on roads and apparatus to carry out the process |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0690175B1 (en) |
| AT (1) | ATE166123T1 (en) |
| DE (1) | DE4423304C1 (en) |
| DK (1) | DK0690175T3 (en) |
| ES (1) | ES2117814T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19844979A1 (en) * | 1997-05-27 | 2000-04-06 | Voith Sulzer Papiermasch Gmbh | Application of coatings to running surface using spray nozzles with overlapping spray patterns involves modifying emergent spray to change local application rate |
| DE102008059557A1 (en) * | 2008-11-28 | 2010-06-02 | Hofmann Gmbh Maschinenfabrik Und Vertrieb | Method for keeping constant the marking line width at a marking line color on a marking surface to be marked marking machines and marking machine for performing the method |
| DE102013003069A1 (en) * | 2013-02-22 | 2014-08-28 | Grün GmbH Spezialmaschinenfabrik | Method for maintaining constant width of line of machine for renewing e.g. warning lines on e.g. road, involves differentiating pressure value and temperature of substance to determine correct value for vertical adjustment of spray head |
| CN107421490A (en) * | 2017-06-13 | 2017-12-01 | 北京新能源汽车股份有限公司 | Auxiliary device for measuring turning radius of automobile |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782634A (en) * | 1972-12-15 | 1974-01-01 | Swenson Spreader & Mfg Co | Vehicle mounted liquid distributor apparatus |
| DE3435213A1 (en) * | 1984-09-26 | 1986-04-03 | Walter Hofmann GmbH, 2084 Rellingen | Arrangement for automatically keeping constant the thickness of the layer of marking lines or the like |
| DE8915850U1 (en) * | 1989-12-22 | 1991-09-19 | Robert Breining Maschinen- & Fahrzeugbau GmbH u. Co, 73630 Remshalden | Device for the dosed application of a liquid binding agent, in particular bitumen, to a surface |
| DE4329641C2 (en) * | 1993-09-02 | 1997-09-18 | Hofmann Walter Maschf | Road marking machine with throttle device to influence the application of marking material |
| DE9400237U1 (en) * | 1994-01-08 | 1995-05-11 | Friedrichs, Mark, 26316 Varel | Luminous collar pendant for animals |
-
1994
- 1994-07-02 DE DE4423304A patent/DE4423304C1/en not_active Expired - Fee Related
-
1995
- 1995-06-10 ES ES95108956T patent/ES2117814T3/en not_active Expired - Lifetime
- 1995-06-10 DK DK95108956T patent/DK0690175T3/en active
- 1995-06-10 EP EP95108956A patent/EP0690175B1/en not_active Expired - Lifetime
- 1995-06-10 AT AT95108956T patent/ATE166123T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0690175A1 (en) | 1996-01-03 |
| ATE166123T1 (en) | 1998-05-15 |
| ES2117814T3 (en) | 1998-08-16 |
| DK0690175T3 (en) | 1999-03-01 |
| DE4423304C1 (en) | 1995-10-05 |
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