EP1247765B1 - Load monitoring device for foot boards - Google Patents
Load monitoring device for foot boards Download PDFInfo
- Publication number
- EP1247765B1 EP1247765B1 EP02002741A EP02002741A EP1247765B1 EP 1247765 B1 EP1247765 B1 EP 1247765B1 EP 02002741 A EP02002741 A EP 02002741A EP 02002741 A EP02002741 A EP 02002741A EP 1247765 B1 EP1247765 B1 EP 1247765B1
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- European Patent Office
- Prior art keywords
- sensors
- load
- holding means
- vehicle
- sensor
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/001—Vehicles particularly adapted for collecting refuse for segregated refuse collecting, e.g. vehicles with several compartments
- B65F2003/003—Footboards
Definitions
- the invention relates to a load monitoring device for running boards according to the preamble of claim 1.
- Fold-out footboards are arranged at the rear of the garbage trucks which the garbage collectors can stand while driving forward.
- refuse collection vehicles may not be reset if the Garbage workers stand on the running boards. It is therefore already known Provide running board sensors, for example, with the reverse gear of the Garbage truck are coupled and blocking the reverse drive effect when the running boards are loaded.
- a garbage truck is known in which the Running boards are equipped with contact switches. To backwards or over to be able to drive forward beyond a certain limit speed, the running boards must be swiveled into a position that is no longer usable become. If this is not done, a pneumatic valve automatically the vehicle's brake or a gear lock is activated and the garbage truck cannot be moved or it is braked. The activation of the Pneumatic valve takes place via a relay, which on the one hand via the to the Footboards between the support arm and the foldable or swiveling tread arranged contact switches is controlled and in the de-energized state creates a connection between the reversing light switch and the pneumatic valve.
- the contact switch should be tamper-proof, but not that Footboard. It can therefore not be excluded that the running board of the garbage collectors are relieved so that these contact switches when climbing not be operated. Rides on the running board are also possible, which should not be possible due to the safety device.
- From DE-OS 37 29 107 C2 is a refuse collection vehicle with running boards known to trigger a contact switch when loaded, for example as Load switch is formed and the reversing light with a relay combines.
- This relay causes a load and reverse Engine stop, which is only released when the load on the Running board has been removed.
- DE-OS 25 47 959 describes a load-dependent switching device that In particular, intended to secure movable steps on vehicles is.
- the object is achieved in that the load detection device Sensors for detecting movements of the running board and / or the Has holding means in at least two spatial directions.
- the solution according to the invention is based on the knowledge that the Load detection device not only in one direction of movement, namely the direction of loading when entering the footboard, but also in at least one other direction of movement must be sensitive to the To recognize the load on the running board despite manipulations.
- the load detection device preferably has sensors Detect at least one bending moment and at least one vertical one Movement on. Because with such manipulations only slight movements and low forces are connected, the load detection device be appropriately sensitive.
- the optimal one Monitoring of the running board can be achieved in that sensors for Monitoring of all possible six degrees of freedom can be used so that e.g. rotational movements of the running board can also be detected. It is for that not absolutely necessary that the suspension of the running board is a Allows movement in all these spatial directions. By manipulation the movements of the running board changed under load, so that not only additional bending forces, but movements in the horizontal direction or Rotational movements can occur, which mainly affect the holding device of the Transfer footboards. Type and number of sensors and their location Attachment depend on the design of the running board and its attachment.
- the sensors are advantageously attached to the holding means of the running board arranged.
- the most sensitive area is the area of the holding device, the is arranged adjacent to the attachment point of the holding means on the vehicle.
- the sensors are preferably strain gauges, which are already low Recognize the elongations of the component to which they are attached.
- the arrangement of the strain gauges on the holding means of the running board is so too choose that the spatial directions in which the running board moves are loaded or can be deformed, recognized.
- the sensor device with the strain gauges is in one known Wheatstone bridge circuit integrated to already detect small changes in resistance of the strain gauges.
- the Wheatstone bridge circuit can be designed as a half or full bridge depending on whether two or four strain gauges are attached to the Wheatstone bridge are connected.
- a full bridge has the advantage that temperature compensation can also be carried out so that Misinterpretations about the load on the running board can be avoided.
- Another embodiment provides pressure switches, with each being closed direction of movement, a separate pressure switch preferably on Attachment must be attached.
- the load detection device preferably comprises a Control device, on the one hand with the sensors and on the other hand with the Vehicle components is connected to in this way when detecting a The impact of the footboard on the vehicle. This can happen, for example, that an acoustic signal in the cab or optical type is activated.
- the control device can, for example Influence on driving speed or on forward or reverse gear so as to endanger what is on the running board To prevent operators. Which vehicle components with the Control device depends on the requirements of the Operator provides. So the control device with the press of the Collection container and / or the fill. Preferably are the press and / or the bed when the footboard is loaded stopped or turned off and / or before stopping or turning off driven to a safe position.
- a safe position for the filling is e.g. the travel height, i.e. a raised position in which a safe Driving on is possible.
- the control device is preferably also for recording and processing the vehicle data.
- the vehicle speed in the Evaluation of the measurement signals from the sensors can be included. Due to the high sensitivity of the sensors, for example the case could occur that with an unloaded running board when driving fast through a pothole a vertical downward force is briefly detected, which increases would reduce the speed. So it can be appropriate, possibly depending on the vehicle parameters To provide time windows in which the signals from the sensors are evaluated or also not be evaluated.
- Fig. 1 is the rear of a garbage truck 40 with the pouring opening 41 shown in perspective.
- a fold-out footboard 1, 2 which, among other things a footboard arm 10 is connected to the frame 42.
- FIG. 2a 10 and 17 Such a running board 1 with the associated holding means is shown in FIG. 2a 10 and 17 shown in perspective.
- the footboard 1 has an L-shaped Base body on the horizontal axis 16 on the footboard arm 10th is pivotally mounted. The footboard 1 can thus from the in Figs. 2a and 2b shown working position can be folded up into a rest position.
- the footboard 1 is fastened to the vehicle (not shown) via holding means, the holding means being a rectangular footboard arm 10 and a Include mounting plate 17.
- the running board arm 10 is rigidly fastened to the vehicle by means of the fastening plate 17, so that loads on the running board 1 in the form of bending forces on the running board arm 10 are noticeable. If, as in FIG. 2a, a load F load acts on the footboard, 10 bending moments arise on the footboard arm, which lead to material expansion 11 of the footboard arm.
- the Sensor device 20 consists of a cylindrical base body on which a total of four strain gauges 21a-d are arranged.
- This Strain gauges are arranged opposite each other in pairs, each strain gauge with the vertical at an angle of 45 ° occupies. This ensures that both vertical and horizontal Forces from the strain gauge 21a-d are detected.
- the pair Arrangement has the advantage that mutual compensation of the Strain gauges are possible to avoid errors in this way excluded.
- the strain gauges 21a-d are on a Wheatstone, not shown Bridge for evaluating the recorded material strains connected. In the the fig. 2a to 2c arrangement shown detects movements of the footboard in vertical direction both up and down and if necessary Torsions, which are also changes in length or bending moments of the Make footboard arm 10 noticeable.
- FIG 3a shows a further embodiment, which differs from that shown in FIG the fig. 2a to 2c shown embodiment differs in that instead of strain gauges in the area of the mounting plate 17 Pressure switches 30,31 are arranged and that the support arm 10 in vertical Direction is mounted. Other fasteners, such as stops etc. are omitted for clarity.
- the pressure switch 30 is arranged in the vertical direction and lies with it Sensor tip on the underside 13 of the support arm 10 so that it at a Load is actuated vertically downwards.
- This is the footboard arm 10 with at least two degrees of freedom in the direction of the torques and Shear forces movably mounted in the joint 19, as shown in Fig. 3d is shown.
- Bending elements of the support arm are activated by a pressure switch 31 detected, which is arranged in the horizontal direction and on the rear 14th of the footboard arm.
- FIG. 4 is a schematic representation of the entire device shown from which the linkage of the load detection device with the vehicle components is shown.
- the two running boards 1, 2 are connected to a battery, preferably to the Vehicle battery 7 connected. Via the electrical connection lines 8 and 9 are the two running boards 1 and 2 to the control device 3 connected, which processes the data supplied by the sensors and in Implements signals for the vehicle components. Accordingly, the Control device 3 via lines 50, 51 and 52 with the gear 6 and connected to the engine 5. These data lines 50, 51, 52 are also for this trained, information about the vehicle components 5 and 6 to the Pass on control device 3 so that this when evaluating the Sensor signals can be taken into account. In the illustration shown here is a display device 4 interposed, which is in the cab of the Vehicle is arranged and the driver the appropriate information transmitted about the load on the running board (s).
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- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Refuse-Collection Vehicles (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Control Of Multiple Motors (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Push-Button Switches (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Vending Machines For Individual Products (AREA)
- Vehicle Body Suspensions (AREA)
- Communication Control (AREA)
- Invalid Beds And Related Equipment (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
Description
Die Erfindung betrifft eine Belastungsüberwachungsvorrichtung für Trittbretter
gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a load monitoring device for running boards
according to the preamble of
Am Heck der Müllfahrzeuge sind ausklappbare Trittbretter angeordnet, auf denen die Müllwerker während der Vorwärtsfahrt stehen können. Das Müllfahrzeug darf allerdings dann nicht zurückgesetzt werden, wenn die Müllwerker auf den Trittbrettern stehen. Es ist daher bereits bekannt, Trittbrett-Sensoren vorzusehen, die beispielsweise mit dem Rückwärtsgang des Müllfahrzeugs gekoppelt sind und eine Blockierung der Rückwärtsfahrt bewirken, wenn die Trittbretter belastet sind.Fold-out footboards are arranged at the rear of the garbage trucks which the garbage collectors can stand while driving forward. The However, refuse collection vehicles may not be reset if the Garbage workers stand on the running boards. It is therefore already known Provide running board sensors, for example, with the reverse gear of the Garbage truck are coupled and blocking the reverse drive effect when the running boards are loaded.
Aus der DE 41 21 720 A 1 ist ein Müllfahrzeug bekannt, bei dem die Trittbretter mit Kontaktschaltern ausgerüstet sind. Um rückwärts bzw. über eine bestimmte Grenzgeschwindigkeit hinaus vorwärts fahren zu können, müssen die Trittbretter in eine nicht mehr benutzbare Position geschwenkt werden. Wenn dies nicht erfolgt, wird automatisch über ein Pneumatikventil die Bremse des Fahrzeugs oder eine Gangsperre aktiviert und das Müllfahrzeug kann nicht bewegt werden bzw. es wird abgebremst. Die Aktivierung des Pneumatikventils erfolgt über ein Relais, welches einerseits über den an den Trittbrettern zwischen Trägerarm und klapp- bzw. schwenkbarem Auftritt fest angeordneten Kontaktschaltern angesteuert wird und im stromlosen Zustand eine Verbindung zwischen Rückfahrlichtschalter und Pneumatikventil herstellt. Der Kontaktschalter soll zwar manipulationssicher sein, nicht jedoch das Trittbrett. Es kann daher nicht ausgeschlossen werden, daß das Trittbrett von den Müllwerkern so entlastet wird, daß beim Aufsteigen diese Kontaktschalter nicht betätigt werden. Es sind dann auch Fahrten auf dem Trittbrett möglich, die aufgrund der Sicherheitseinrichtung nicht möglich sein dürften.From DE 41 21 720 A 1 a garbage truck is known in which the Running boards are equipped with contact switches. To backwards or over to be able to drive forward beyond a certain limit speed, the running boards must be swiveled into a position that is no longer usable become. If this is not done, a pneumatic valve automatically the vehicle's brake or a gear lock is activated and the garbage truck cannot be moved or it is braked. The activation of the Pneumatic valve takes place via a relay, which on the one hand via the to the Footboards between the support arm and the foldable or swiveling tread arranged contact switches is controlled and in the de-energized state creates a connection between the reversing light switch and the pneumatic valve. The contact switch should be tamper-proof, but not that Footboard. It can therefore not be excluded that the running board of the garbage collectors are relieved so that these contact switches when climbing not be operated. Rides on the running board are also possible, which should not be possible due to the safety device.
Aus der DE 39 18 971 C2 ist ein Müllfahrzeug mit einer Drehzahlbegrenzungseinrichtung bekannt, die beim Besteigen des zweischalig ausgebildeten Trittbrettes durch einen Müllwerker über einen Kontakt automatisch aktiviert wird. Hierzu sind an den Trittbrettschalen beispielsweise Näherungsschalter vorgesehen, die jedoch auf einfache Weise manipuliert werden können. Eine andere Ausführung sieht Handgriffe vor, die bei Berührung ebenfalls ein Signal abgeben. Auch hier kann beispielsweise von den Müllwerkern eine Isolierung angebracht werden, um die Signalabgabe zu unterbinden.From DE 39 18 971 C2 is a garbage truck with a Speed limiting device known when climbing the double-shell trained footboard by a garbage collector via a contact is automatically activated. For this purpose, for example, on the running board shells Proximity switch provided, but manipulated in a simple manner can be. Another version provides handles that Touch also give a signal. Here too, for example insulation is installed in the garbage collectors to prevent the signal from being emitted prevention.
Aus der DE-OS 37 29 107 C2 ist ein Abfallsammelfahrzeug mit Trittbrettern bekannt, die bei Auflast einen Kontaktschalter auslösen, der beispielsweise als Lastschalter ausgebildet ist und die Rückfahrleuchte mit einem Relais verbindet. Dieses Relais bewirkt bei Auflast und Rückwärtsfahrt einen Motorstopp, der erst dann aufgehoben wird, wenn die Auflast auf dem Trittbrett entfernt worden ist.From DE-OS 37 29 107 C2 is a refuse collection vehicle with running boards known to trigger a contact switch when loaded, for example as Load switch is formed and the reversing light with a relay combines. This relay causes a load and reverse Engine stop, which is only released when the load on the Running board has been removed.
Die DE-OS 25 47 959 beschreibt eine lastabhängige Schaltvorrichtung, die insbesondere zum Absichern beweglicher Trittstufen an Fahrzeugen vorgesehen ist.DE-OS 25 47 959 describes a load-dependent switching device that In particular, intended to secure movable steps on vehicles is.
Sämtliche bekannten Trittbrettüberwachungseinrichtungen können so manipuliert werden, daß die Sicherheitsfunktion außer Kraft gesetzt wird und eine Rückwärtsfahrt des Müllfahrzeugs auch dann möglich ist, wenn die Müllwerker auf dem Trittbrett stehen. All known footboard monitoring devices can do so manipulated to override the safety function and a reverse drive of the garbage truck is also possible if the Garbage workers stand on the running board.
Es ist daher Aufgabe der Erfindung, eine Belastungsüberwachungsvorrichtung für Trittbretter zu schaffen, mit der eine Trittbrettbelastung durch einen auf dem Trittbrett stehenden Müllwerker auch dann noch erkannt wird, wenn das Trittbrett durch eine Manipulation weitgehend entlastet sein sollte.It is therefore an object of the invention to provide a load monitoring device for running boards to create a running board load by one garbage worker standing on the running board is recognized even if that Footboard should be largely relieved by manipulation.
Die Aufgabe wird dadurch gelöst, daß die Belastungserkennungseinrichtung Sensoren zum Erkennen von Bewegungen des Trittbrettes und/oder der Haltemittel in mindestens zwei Raum-Richtungen aufweist.The object is achieved in that the load detection device Sensors for detecting movements of the running board and / or the Has holding means in at least two spatial directions.
Der erfindungsgemäßen Lösung liegt die Erkenntnis zugrunde, daß die Belastungserkennungseinrichtung nicht nur in einer Bewegungsrichtung, nämlich der Belastungsrichtung beim Betreten des Trittbrettes, sondern auch in mindestens einer weiteren Bewegungsrichtung sensitiv sein muß, um die Belastung des Trittbrettes trotz Manipulationen erkennen zu können.The solution according to the invention is based on the knowledge that the Load detection device not only in one direction of movement, namely the direction of loading when entering the footboard, but also in at least one other direction of movement must be sensitive to the To recognize the load on the running board despite manipulations.
Bei einer beispielsweise manipulativen Entlastung des Trittbretts, wie Hochbinden etc., werden beim Betreten des Trittbretts durch den Müllwerker nach wie vor Kräfte auf das Trittbrett und/oder die Haltemittel ausgeübt, die zu einer Bewegung und/oder einer Verformung der Bauteile führen. Die Bewegung in vertikaler Richtung nach unten wird durch die Manipulation möglicherweise erheblich reduziert sein. Stattdessen werden verstärkt Biegemomente auftreten, die mit einem oder weiteren Sensoren erfaßt werden können.With a manipulative relief of the footboard, for example Tie up, etc., when entering the footboard by the garbage collector forces are still exerted on the running board and / or the holding means which lead to movement and / or deformation of the components. The Movement in the vertical direction is down through the manipulation may be significantly reduced. Instead, be reinforced Bending moments occur, which are detected with one or more sensors can.
Vorzugsweise weist die Belastungserkennungseinrichtung Sensoren zum Erkennen wenigstens eines Biegemoments und mindestens einer vertikalen Bewegung auf. Da mit solchen Manipulationen nur geringfügige Bewegungen und geringe Kräfte verbunden sind, muß die Belastungserkennungseinrichtung entsprechend empfindlich ausgebildet sein. The load detection device preferably has sensors Detect at least one bending moment and at least one vertical one Movement on. Because with such manipulations only slight movements and low forces are connected, the load detection device be appropriately sensitive.
Um eine weitere Verbesserung im Sinne einer umfassenderen Überwachung des Trittbrettes zu erzielen, werden von den Sensoren vorzugsweise nicht nur lineare, sondern auch Kipp- oder Drehbewegungen erfaßt. Die optimale Überwachung des Trittbrettes kann dadurch erreicht werden, daß Sensoren zur Überwachung aller möglichen sechs Freiheitsgrade eingesetzt werden, so daß z.B. auch Rotationsbewegungen des Trittbrettes erkannt werden. Hierfür ist es nicht zwingend erforderlich, daß die Aufhängung des Trittbrettes eine Bewegung in all diesen Raumrichtungen zuläßt. Durch Manipulation werden die Bewegungen des Trittbretts unter Belastung verändert, so daß nicht nur zusätzliche Biegekräfte, sondern Bewegungen in horizontaler Richtung oder Drehbewegungen auftreten können, die sich vorwiegend auf die Haltemittel des Trittbretts übertragen. Art und Anzahl der Sensoren sowie deren Ort der Anbringung richten sich nach der Bauart des Trittbretts und deren Befestigung.To further improve in terms of more comprehensive monitoring to achieve the running board are not only preferred by the sensors linear, but also tilting or rotating movements detected. The optimal one Monitoring of the running board can be achieved in that sensors for Monitoring of all possible six degrees of freedom can be used so that e.g. rotational movements of the running board can also be detected. It is for that not absolutely necessary that the suspension of the running board is a Allows movement in all these spatial directions. By manipulation the movements of the running board changed under load, so that not only additional bending forces, but movements in the horizontal direction or Rotational movements can occur, which mainly affect the holding device of the Transfer footboards. Type and number of sensors and their location Attachment depend on the design of the running board and its attachment.
Vorteilhafterweise werden die Sensoren am Haltemittel des Trittbrettes angeordnet. Am empfindlichsten ist der Bereich des Haltemittels, der benachbart zum Befestigungspunkt der Haltemittel am Fahrzeug angeordnet ist.The sensors are advantageously attached to the holding means of the running board arranged. The most sensitive area is the area of the holding device, the is arranged adjacent to the attachment point of the holding means on the vehicle.
Vorzugsweise sind die Sensoren Dehnungsmeßstreifen, die bereits geringe Längendehnungen des Bauteils erkennen, an denen sie befestigt sind. Die Anordnung der Dehnungsmeßstreifen am Haltemittel des Trittbrettes ist so zu wählen, daß die Raumrichtungen, in denen das Trittbrett bewegt, belastet oder verformt werden kann, erkannt werden.The sensors are preferably strain gauges, which are already low Recognize the elongations of the component to which they are attached. The The arrangement of the strain gauges on the holding means of the running board is so too choose that the spatial directions in which the running board moves are loaded or can be deformed, recognized.
Vorzugsweise sind vier Dehnungsstreifen in einer Sensoreinrichtung, die auch als Meßdose bezeichnet wird, zusammengefaßt. Vorteilhafterweise kann diese Sensoreinrichtung seitlich in den Tragarm des Trittbretts eingesetzt sein.There are preferably four stretch marks in one sensor device, which too is referred to as a load cell. This can advantageously Sensor device can be inserted laterally into the support arm of the running board.
Vorzugsweise ist die Sensoreinrichtung mit den Dehnungsmeßstreifen in eine an sich bekannte Wheatstone'sche Brückenschaltung integriert, um bereits geringe Widerstandsänderungen der Dehnungsmeßstreifen zu detektieren. Die Wheatstone'sche Brückenschaltung kann als Halb- oder Vollbrücke ausgebildet sein, je nachdem, ob zwei oder vier Dehnungsmeßstreifen an die Wheatstone'sche Brücke angeschlossen sind. Eine Vollbrücke hat den Vorteil, daß auch eine Temperaturkompensation vorgenommen werden kann, so daß Fehlinterpretationen über die Belastung des Trittbrettes vermieden werden.Preferably, the sensor device with the strain gauges is in one known Wheatstone bridge circuit integrated to already detect small changes in resistance of the strain gauges. The Wheatstone bridge circuit can be designed as a half or full bridge depending on whether two or four strain gauges are attached to the Wheatstone bridge are connected. A full bridge has the advantage that temperature compensation can also be carried out so that Misinterpretations about the load on the running board can be avoided.
Eine andere Ausführungsform sieht Druckschalter vor, wobei für jede zu erfassende Bewegungsrichtung ein eigener Druckschalter vorzugsweise am Haltemittel anzubringen ist.Another embodiment provides pressure switches, with each being closed direction of movement, a separate pressure switch preferably on Attachment must be attached.
Vorzugsweise umfaßt die Belastungserkennungseinrichtung eine Steuereinrichtung, die einerseits mit den Sensoren und andererseits mit den Fahrzeugkomponenten verbunden ist, um auf diese Weise beim Erkennen einer Belastung des Trittbretts auf das Fahrzeug einwirken zu können. Dies kann beispielsweise dadurch geschehen, daß im Führerhaus eine Anzeige akustischer oder optischer Art aktiviert wird. Die Steuereinrichtung kann beispielsweise Einfluß auf die Fahrtgeschwindigkeit oder auf Vorwärts- oder Rückwärtsgang nehmen, um so eine Gefährdung des auf dem Trittbrett befindlichen Bedienungspersonals zu verhindern. Welche Fahrzeugkomponenten mit der Steuereinrichtung verbunden sind, richtet sich nach den Anforderungen, die der Betreiber stellt. So kann die Steuereinrichtung auch mit dem Preßwerk des Sammelbehälters and/oder der Schüttung verbunden sein. Vorzugsweise werden bei Belastung des Trittbretts das Preßwerk und/oder die Schüttung angehalten oder abgeschaltet und/oder vor dem Anhalten oder Abschalten in eine sichere Stellung gefahren. Eine sichere Stellung für die Schüttung ist z.B. die Weiterfahrhöhe, d.h. eine angehobene Stellung, in der ein gefahrloses Weiterfahren möglich ist.The load detection device preferably comprises a Control device, on the one hand with the sensors and on the other hand with the Vehicle components is connected to in this way when detecting a The impact of the footboard on the vehicle. This can happen, for example, that an acoustic signal in the cab or optical type is activated. The control device can, for example Influence on driving speed or on forward or reverse gear so as to endanger what is on the running board To prevent operators. Which vehicle components with the Control device depends on the requirements of the Operator provides. So the control device with the press of the Collection container and / or the fill. Preferably are the press and / or the bed when the footboard is loaded stopped or turned off and / or before stopping or turning off driven to a safe position. A safe position for the filling is e.g. the travel height, i.e. a raised position in which a safe Driving on is possible.
Vorzugsweise ist die Steuereinrichtung auch zur Aufnahme und Verarbeitung der Fahrzeugdaten ausgelegt. So kann z.B. die Fahrzeuggeschwindigkeit in die Auswertung der Meßsignale der Sensoren einbezogen werden. Aufgrund der großen Empfindlichkeit der Sensoren, könnte beispielsweise der Fall eintreten, daß bei einem unbelasteten Trittbrett bei schneller Fahrt durch ein Schlagloch kurzzeitig eine vertikale nach unten gerichtete Kraft detektiert wird, die zu einer Drosselung der Geschwindigkeit führen würde. Insofern kann es zweckmäßig sein, eventuell in Abhängigkeit von den Fahrzeugparametern Zeitfenster vorzusehen, in denen die Signale der Sensoren ausgewertet bzw. auch nicht ausgewertet werden.The control device is preferably also for recording and processing the vehicle data. For example, the vehicle speed in the Evaluation of the measurement signals from the sensors can be included. Due to the high sensitivity of the sensors, for example the case could occur that with an unloaded running board when driving fast through a pothole a vertical downward force is briefly detected, which increases would reduce the speed. So it can be appropriate, possibly depending on the vehicle parameters To provide time windows in which the signals from the sensors are evaluated or also not be evaluated.
Beispielhafte Ausführungsformen der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:
- Fig. 1
- die rückwärtige Ansicht eines Müllfahrzeugs mit zwei ausgeklappten Trittbrettern,
- Fign. 2a-c
- ein Trittbrett mit Sensoren gemäß einer ersten Ausführungsform in perspektivischer Darstellung in Seitenansicht und in Draufsicht,
- Fign. 3a-d
- ein Trittbrett mit Sensoren gemäß einer zweiten Ausführungsform in perspektivischer Darstellung in Seitenansicht, in Draufsicht und in vergrößerter Darstellung der Aufhängung, und
- Fig. 4
- ein schematisches Schaltbild der Belastungsüberwachungsvorrichtung.
- Fig. 1
- the rear view of a garbage truck with two unfolded running boards,
- FIGS. 2a-c
- a footboard with sensors according to a first embodiment in a perspective view in side view and in plan view,
- FIGS. 3a-d
- a footboard with sensors according to a second embodiment in a perspective view in side view, in plan view and in an enlarged view of the suspension, and
- Fig. 4
- a schematic diagram of the load monitoring device.
In der Fig. 1 ist das Heck eines Müllfahrzeuges 40 mit der Einschüttöffnung
41 perspektivisch dargestellt. Am Rahmen 42 des Müllfahrzeugs 40 ist auf
jeder Seite ein ausklappbares Trittbrett 1,2 angeordnet, das unter anderem über
einen Trittbrettarm 10 mit dem Rahmen 42 verbunden ist. In Fig. 1 is the rear of a
In der Fig. 2a ist ein solches Trittbrett 1 mit den dazugehörigen Haltemitteln
10 und 17 perspektivisch dargestellt. Das Trittbrett 1 weist einen L-förmigen
Grundkörper auf, der um die horizontale Achse 16 am Trittbrettarm 10
schwenkbar gelagert ist. Das Trittbrett 1 kann somit aus der in den Fign. 2a
und 2b gezeigten Arbeitsstellung in eine Ruhestellung hochgeklappt werden.Such a running
Das Trittbrett 1 ist über Haltemittel am Fahrzeug (nicht dargestellt) befestigt,
wobei die Haltemittel einen rechteckigen Trittbrettarm 10 und ein
Befestigungsblech 17 umfassen.The
Der Trittbrettarm 10 ist mittels des Befestigungsbleches 17 starr am Fahrzeug
befestigt, so daß sich Belastungen des Trittbrettes 1 in Form von Biegekräften
am Trittbrettarm 10 bemerkbar machen. Wenn wie in der Fig. 2a eine Last
FLast auf das Trittbrett einwirkt, entstehen am Trittbrettarm 10 Biegemomente,
die zu einer Materialdehnung 11 des Trittbrettarms führen.The running
In der hier gezeigten Ausführungsform befindet sich in der Seitenfläche 12 eine
Meßdosenöffnung 18, in die eine Sensoreinrichtung 20 eingesetzt ist. Die
Sensoreinrichtung 20 besteht aus einem zylindrischen Grundkörper, auf dem
insgesamt vier Dehnungsmeßstreifen 21a-d angeordnet sind. Diese
Dehnungsmeßstreifen sind jeweils paarweise gegenüberliegend angeordnet,
wobei jeder Dehnungsmeßstreifen mit der Vertikalen einen Winkel von 45°
einnimmt. Dadurch wird erreicht, daß sowohl vertikale als auch horizontale
Kräfte von dem Dehnungsmeßstreifen 21a-d detektiert werden. Die paarweise
Anordnung hat den Vorteil, daß eine gegenseitige Kompensation der
Dehnungsmeßstreifen möglich ist, um auf diese Art und Weise Fehler
auszuschließen.In the embodiment shown here, there is one in the
Die Dehnungsmeßstreifen 21a-d sind an eine nicht dargestellte Wheatstone'sche
Brücke zur Auswertung der erfaßten Materialdehnungen angeschlossen. Die in
den Fign. 2a bis 2c gezeigte Anordnung erfaßt Bewegungen des Trittbretts in
vertikaler Richtung sowohl nach oben als auch nach unten und gegebenenfalls
Torsionen, die sich ebenfalls in Längenänderungen oder Biegemomenten des
Trittbrettarms 10 bemerkbar machen.The strain gauges 21a-d are on a Wheatstone, not shown
Bridge for evaluating the recorded material strains connected. In the
the fig. 2a to 2c arrangement shown detects movements of the footboard in
vertical direction both up and down and if necessary
Torsions, which are also changes in length or bending moments of the
In der Fig. 3a ist eine weitere Ausführungsform dargestellt, die sich von der in
den Fign. 2a bis 2c dargestellten Ausführungsform dadurch unterscheidet, daß
anstelle von Dehnungsmeßstreifen im Bereich des Befestigungsbleches 17
Druckschalter 30,31 angeordnet sind und daß der Tragarm 10 in vertikaler
Richtung verschieblich gelagert ist. Weitere Befestigungsmittel, wie Anschläge
usw. werden der Übersichtlichkeit wegen weggelassen.3a shows a further embodiment, which differs from that shown in FIG
the fig. 2a to 2c shown embodiment differs in that
instead of strain gauges in the area of the mounting
Der Druckschalter 30 ist in vertikaler Richtung angeordnet und liegt mit seiner
Sensorspitze an der Unterseite 13 des Tragarms 10 an, so daß er bei einer
Lasteinwirkung senkrecht nach unten betätigt wird. Hierzu ist der Trittbrettarm
10 mit mindestens zwei Freiheitsgraden in Richtung der Drehmomente und
Querkräfte beweglich im Gelenk 19 gelagert, wie dies in der Fig. 3d
dargestellt ist. Biegeelemente des Tragarms werden durch einen Druckschalter
31 erfaßt, der in horizontaler Richtung angeordnet ist und an der Rückseite 14
des Trittbrettarms anliegt.The
In der Fig. 4 ist eine schematische Darstellung der gesamten Vorrichtung dargestellt, aus der die Verknüpfung der Belastungserkennungseinrichtung mit den Fahrzeugkomponenten dargestellt ist.4 is a schematic representation of the entire device shown from which the linkage of the load detection device with the vehicle components is shown.
Die beiden Trittbretter 1, 2 sind an eine Batterie, vorzugsweise an die
Fahrzeugbatterie 7 angeschlossen. Über die elektrischen Verbindungsleitungen
8 und 9 sind die beiden Trittbretter 1 und 2 an die Steuereinrichtung 3
angeschlossen, die die von den Sensoren gelieferten Daten verarbeitet und in
Signale für die Fahrzeugkomponenten umsetzt. Dementsprechend ist die
Steuereinrichtung 3 über die Leitungen 50, 51 und 52 mit dem Getriebe 6 und
dem Motor 5 verbunden. Diese Datenleitungen 50, 51, 52 sind auch dazu
ausgebildet, Informationen über die Fahrzeugkomponenten 5 und 6 an die
Steuereinrichtung 3 weiterzugeben, so daß diese bei der Auswertung der
Sensorsignale berücksichtigt werden können. In der hier gezeigten Darstellung
ist noch eine Anzeigeeinrichtung 4 zwischengeschaltet, die im Führerhaus des
Fahrzeugs angeordnet ist und dem Fahrer die entsprechenden Informationen
über die Belastung des oder der Trittbretter übermittelt. The two
- 11
- Trittbrettrunning board
- 22
- Trittbrettrunning board
- 33
- Steuereinrichtungcontrol device
- 44
- Terminalterminal
- 55
- Motorengine
- 66
- Getriebetransmission
- 77
- Batteriebattery
- 88th
- Verbindungsleitungconnecting line
- 99
- Verbindungsleitungconnecting line
- 1010
- TrittbrettarmTrittbrettarm
- 1111
- Oberseitetop
- 1212
- Seitenflächeside surface
- 1313
- Unterseitebottom
- 1414
- Rückseiteback
- 1515
- Vorderseitefront
- 1616
- Schwenkachseswivel axis
- 1717
- Befestigungsblechmounting plate
- 1818
- MeßdosenöffnungMeßdosenöffnung
- 1919
- Gelenk mit zwei FreiheitsgradenJoint with two degrees of freedom
- 2020
- Sensoreinrichtungsensor device
- 21a-d21a-d
- Dehnungsmeßstreifenstrain
- 3030
- Druckschalterpressure switch
- 3131
- Druckschalterpressure switch
- 4040
- Müllfahrzeuggarbage truck
- 4141
- Einschüttöffnungpour-in
- 4242
- Rahmenframe
- 5050
- Datenleitungdata line
- 5151
- Datenleitungdata line
- 5252
- Datenleitungdata line
Claims (12)
- Load monitoring device for foot boards (1, 2) attached to a vehicle (40), in particular for foot boards disposed at the rear of refuse collection vehicles, having a load detecting device which is provided for detecting the loading of the foot board (1, 2) and is connected to vehicle components such as the engine, ignition or gear-change mechanism in such a way as to influence them and to holding means (10) for attaching the foot boards (1, 2) to the vehicle (40), characterised in that the load detecting device has sensors to detect movements of the foot board (1,2) and/or of the holding means (10) in at least two spatial directions.
- Load monitoring device as claimed in claim 1, characterised in that the load detecting device has sensors to detect at least one bending moment and at least one vertical movement.
- Device as claimed in claim 1 or 2, characterised in that the load detecting device has sensors for detecting at least one linear and one rotational movement.
- Device as claimed in any one of claims 1 to 3, characterised in that the load detecting device has sensors for detecting vertical and/or horizontal movements.
- Device as claimed in any one of claims 1 to 4, characterised in that the sensor or sensors are disposed on the holding means (10).
- Device as claimed in claim 5, characterised in that the sensor or sensors are disposed on the vehicle adjacent to the point where the holding means (10) are attached.
- Device as claimed in any one of claims 1 to 6, characterised in that the sensors are wire strain gauges (21 a-d).
- Device as claimed in claim 7, characterised in that the wire strain gauges (21 a-d) are combined in a sensor device (20).
- Device as claimed in claim 8, characterised in that the sensor device (20) is integrated into a Wheatstone bridge circuit.
- Device as claimed in claim 8 or 9, characterised in that the sensor device (20) is inserted into a side surface (12) of the holding means (10).
- Device as claimed in any one of claims 1 to 6, characterised in that the sensors are electrical pressure switches (30; 31).
- Device as claimed in any one of claims I to 8, characterised in that the load detecting device includes a control device (3) which is connected on the one hand to the sensors and on the other hand to the vehicle components.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200230047T SI1247765T1 (en) | 2001-04-04 | 2002-02-07 | Load monitoring device for foot boards |
| DK02002741T DK1247765T3 (en) | 2001-04-04 | 2002-02-07 | Load monitoring device for step boards |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10116638 | 2001-04-04 | ||
| DE10116638A DE10116638B4 (en) | 2001-04-04 | 2001-04-04 | Load monitoring device for running boards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1247765A1 EP1247765A1 (en) | 2002-10-09 |
| EP1247765B1 true EP1247765B1 (en) | 2004-11-03 |
Family
ID=7680255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02002741A Expired - Lifetime EP1247765B1 (en) | 2001-04-04 | 2002-02-07 | Load monitoring device for foot boards |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1247765B1 (en) |
| AT (1) | ATE281379T1 (en) |
| CZ (1) | CZ297105B6 (en) |
| DE (2) | DE10116638B4 (en) |
| DK (1) | DK1247765T3 (en) |
| HU (1) | HUP0201107A3 (en) |
| PL (1) | PL206446B1 (en) |
| SI (1) | SI1247765T1 (en) |
| SK (1) | SK287206B6 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2895948B1 (en) * | 2006-01-11 | 2008-03-14 | Equip Manutention Et Transport | IMPROVED FOOTBOARD DEVICE AND VEHICLE EQUIPPED WITH SUCH A DEVICE |
| DE102006023501B3 (en) * | 2006-05-18 | 2007-10-31 | Zöller-Kipper GmbH | Running board device for vehicle, especially waste collection vehicle, has support arm spring-mounted on vehicle component |
| DE202006018082U1 (en) * | 2006-11-28 | 2008-04-10 | Faun Umwelttechnik Gmbh & Co. Kg | Garbage truck with running board |
| DE102009039035A1 (en) * | 2009-08-28 | 2011-03-03 | Knorr-Bremse Gmbh | An entry aid device for facilitating access to a vehicle |
| DE102010025692A1 (en) * | 2010-06-30 | 2012-01-05 | Ebocon Gmbh | Footboard device for vehicle for emptying or cleaning of waste containers, comprises pivoting footboard and load detection device, where load on footboard is detected, and support arm comprises vertical support arm section |
| DE202014103270U1 (en) * | 2014-07-16 | 2014-07-23 | Zöller-Kipper GmbH | Footboard device |
| KR102036004B1 (en) * | 2019-05-29 | 2019-10-24 | 신현대특장 주식회사 | Garbage collecting vehicle having satety footboard |
| DE102021114337A1 (en) | 2021-06-02 | 2022-12-08 | Faun Umwelttechnik Gmbh & Co. Kg | Running board and vehicle with a running board |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2547959C3 (en) * | 1975-10-27 | 1978-10-05 | Waggonfabrik Uerdingen Ag, Werk Duesseldorf, 4000 Duesseldorf | Load-dependent switching device, in particular for securing movable steps on vehicles for passenger transport |
| DE3729107A1 (en) * | 1987-09-01 | 1989-03-16 | Siegfried Baatsch | Refuse collection vehicle with reversing safety feature |
| DE3918971C2 (en) * | 1989-06-12 | 1998-07-02 | Siegfried Baatsch | Refuse collection vehicle with automatic speed limit |
| DE4121720C2 (en) * | 1991-07-01 | 1995-05-04 | Friedrichwilhelm Schmaedeke | Disposal vehicle with reversing device and speed limit |
| NL9401831A (en) * | 1994-03-08 | 1995-10-02 | Geesink Bv | Waste collection vehicle equipped with a safety system. |
| DE19734096C1 (en) * | 1997-08-07 | 1999-01-14 | Hiss Eckart | Detection system esp. for refuse collection vehicle which prevents vehicle reversing |
-
2001
- 2001-04-04 DE DE10116638A patent/DE10116638B4/en not_active Expired - Fee Related
-
2002
- 2002-02-07 DE DE50201429T patent/DE50201429D1/en not_active Expired - Lifetime
- 2002-02-07 SI SI200230047T patent/SI1247765T1/en unknown
- 2002-02-07 AT AT02002741T patent/ATE281379T1/en active
- 2002-02-07 DK DK02002741T patent/DK1247765T3/en active
- 2002-02-07 EP EP02002741A patent/EP1247765B1/en not_active Expired - Lifetime
- 2002-03-01 SK SK321-2002A patent/SK287206B6/en not_active IP Right Cessation
- 2002-03-20 CZ CZ20020995A patent/CZ297105B6/en not_active IP Right Cessation
- 2002-03-28 PL PL353081A patent/PL206446B1/en unknown
- 2002-04-02 HU HU0201107A patent/HUP0201107A3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL206446B1 (en) | 2010-08-31 |
| HUP0201107A3 (en) | 2006-05-29 |
| CZ297105B6 (en) | 2006-09-13 |
| ATE281379T1 (en) | 2004-11-15 |
| HU0201107D0 (en) | 2002-06-29 |
| DK1247765T3 (en) | 2005-01-10 |
| SK3212002A3 (en) | 2002-11-06 |
| SK287206B6 (en) | 2010-03-08 |
| PL353081A1 (en) | 2002-10-07 |
| DE10116638B4 (en) | 2006-04-06 |
| SI1247765T1 (en) | 2005-02-28 |
| EP1247765A1 (en) | 2002-10-09 |
| CZ2002995A3 (en) | 2004-03-17 |
| DE50201429D1 (en) | 2004-12-09 |
| DE10116638A1 (en) | 2002-10-17 |
| HUP0201107A2 (en) | 2003-05-28 |
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