EP0849401B1 - Device for mounting a scraperblade to a plough of a snow clearing apparatus - Google Patents

Device for mounting a scraperblade to a plough of a snow clearing apparatus Download PDF

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Publication number
EP0849401B1
EP0849401B1 EP97121827A EP97121827A EP0849401B1 EP 0849401 B1 EP0849401 B1 EP 0849401B1 EP 97121827 A EP97121827 A EP 97121827A EP 97121827 A EP97121827 A EP 97121827A EP 0849401 B1 EP0849401 B1 EP 0849401B1
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EP
European Patent Office
Prior art keywords
plough
clamping lever
scraper
arrangement according
clamping
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EP97121827A
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German (de)
French (fr)
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EP0849401A1 (en
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Walter Maier
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Individual
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/061Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades by scraper blades

Definitions

  • the invention relates to a fastening device for the Establish a detachable connection between the scraper bar and the ploughshare of a snow removal vehicle.
  • the known fastening devices with which the Scraper bar at the bottom of snow removal vehicles is attached are designed as screw connections.
  • the scraper bar is attached using a clamping screw a reinforcement bar welded to the lower edge of the ploughshare to secure the attachment is it known the scraper between a clamping rail that on the front in the direction of travel of the snow removal vehicle lying surface of the scraper bar and the pinch the reinforcement strip.
  • the Legs of the terminal strip resting on the scraper bar a relatively large upper area of the scraper bar. hereby but the wear area of the scraper bar becomes strong reduced with the consequence that a frequent change of the Scraper and the no longer usable, relatively large remainder of the scraper bar as a loss of material Purchase must be made.
  • the object of the present invention is a fastening device to create that enables the existing Take scraper bars into operation longer, because of a Larger area for the scraper abrasion that occurs during clearing should be available.
  • this is done by moving on in the direction of travel rear surfaces of the plow arranged reached two-armed clamping lever with one end can be locked on the scraper bar and on its other End can be connected to the ploughshare via swivel arms, the locking of the clamping lever by one on the Actuating device acting on the clamping lever takes place.
  • the two-armed clamping lever is preferably arranged to be pivotable about a pivot axis running parallel to the lower edge of the ploughshare in both sides of the clamping lever, with the flanges fixedly connected to the rear surface of the ploughshare in the direction of travel of the snow-clearing vehicle and with its one end in the surface located at the rear in the direction of travel of the snow-clearing vehicle
  • the scraper bar can be locked and at its other end there are one or two swivel arms arranged at a lateral distance from one another in the same plane as the clamping lever, the free or free end (s) of which can be locked on the rear surface of the ploughshare in the direction of travel , or are, with the actuating device acting on the one lever arm of the clamping lever for locking the clamping lever.
  • the particular advantage of the fastening device according to the invention is that the entire fastening device is located on the rear surfaces of the ploughshare and scraper bar in the direction of travel of the snow plow, ie in other words the scraper bar is pressed from behind against the lower area of the ploughshare and it becomes avoided that a large surface area of the scraper bar is already covered by parts of the fastening device at the front and is therefore no longer available for work.
  • the entire locking of the scraper bar takes place on the rear side of the ploughshare in the direction of travel.
  • this actuating device can be designed in the form of a clamping screw which passes through the ploughshare starting from its front surface and is supported with the end of its length-adjustable threaded shaft against the lever arm of the clamping lever.
  • a hydraulic piston unit can also be installed instead of the clamping screw. the supply hydraulics are already in the vehicle, so that the actuation of the above-mentioned unit can be easily accomplished.
  • an actuating device which can be replaced and put into operation by the operator without the use of special tools.
  • an expandable hose is selected as the actuating device which runs parallel to the lower edge of the ploughshare between the rear surface of the ploughshare and the clamping lever and is connected to a pneumatic or hydraulic system.
  • the particular advantage of this actuator is in that the loosening of the scraped scraper residue can be made without iced screw connections to have to solve. In addition, everyone can worn scrapers can be loosened at once.
  • a ploughshare 1 there is one along its lower edge Reinforcement bar 2 welded in the form of an L-profile, one leg 2a of the length of the ploughshare 1 after continues below and its front in the direction of travel Surface with the surface of the ploughshare 1 on the same Height.
  • the other leg 2b protrudes backwards and has recesses 2c at the locations of the reinforcement strip 2 on where fasteners 3 for connection between the ploughshare 1 and a scraper bar 4 to be arranged.
  • the scraper bar 4 is in the example of FIG. 1 as one so-called combination bar trained.
  • This combination bar can hollow inside or with rubber, plastic, minerals, Cast or other mixtures can be filled.
  • the casing This scraper bar 4 is mainly made of low-wear Steel formed, but you also know scrapers that from are made according to hard plastic.
  • the one in front in the direction of travel of the snow removal vehicle Part 4a of this scraper bar 4 can with a combination bar consist of a much thinner material than in massive scraper bars because of the stability of the scraper bar through the rear support leg 4b, which is about the Length of the scraper bar 4a is guaranteed. hereby the advantage is achieved that the lower strength the scraper 4a material saved, the weight of the Scraper bar less and thus the energy expenditure is reduced and still the clearing performance due to thinner scraper bar 4a, especially the so-called Black clearance, compared to conventional scraper bars is improved.
  • the shape of the combination strip 4 is in this Example conical, tapering towards the bottom.
  • the width of the support leg 4b exceeds that Widths of the fasteners 3 slightly.
  • the Scraper bar 4a is formed in one piece, her Width corresponds to the width of the ploughshare 1.
  • the fastening device 3 comprises the most important Component a clamping lever designed as a two-armed lever 5, which is about a pivot axis 6 in the direction of travel of the snow removal vehicle lying vertical plane pivotable is.
  • a clamping lever designed as a two-armed lever 5 which is about a pivot axis 6 in the direction of travel of the snow removal vehicle lying vertical plane pivotable is.
  • For holding the clamping lever 5 are on the rear surface of the ploughshare 1 pairs of fastening lugs 7 welded at a distance from each other are arranged and storage for the ends of the Form pivot axis 6 of the clamping lever 5, the between the two Mounting tabs 7 is pivotally held.
  • the pivot axis 6 is secured against slipping by pins 8.
  • One end 5a of the clamping lever 5 is a clamping claw formed in the recessed position in a recess 9 engages the rear surface of the scraper bar 4a.
  • 2a is an enlarged view of the upper part of the scraper bar 4a with a ground, milled or eroded recess 9 shown in the End 5a of the clamping lever 5, designed as a claw, engages can of course the shape of the recess be chosen differently.
  • the width of the recess 9 only slightly larger than the width of the clamping claw 5a is a lateral displacement of the scraper bar 5 not possible relative to ploughshare 1, once through an obstacle on the scraper bar 4 in a side Directional pressure should be so large that it Surface pressure by the force of the jam exceeds.
  • the actuator 16 is by a Screw 17 formed by the front of the ploughshare 1 starting from one with the rear surface of the Ploughshare 1 screwed through welded mounting block 18 becomes.
  • the end of its threaded shaft 17a settles thereby on one arm 5b of the clamping lever 5 and causes a pivoting of the clamping lever 5 such that the Clamping claw 5a in the recess 9 of the L-profile leg 2a rests on scraper bar 4a.
  • the free ends of the swivel arms 11 also slide along the back surface of the ploughshare and rest in one of the recesses 13.
  • the scraper bar 4 is thus firmly connected to the ploughshare 1.
  • the fastening devices shown in FIGS. 3 to 6 differ essentially only in the training the actuating devices 16 with which the clamping lever 5 is brought into the locking position, but not in their Effect on the clamping lever 5.
  • the actuator 16 is in the form of a Expansion hose 19 formed.
  • the expansion hose 19 can all fastening devices provided on the ploughshare 1 3 be common and by a pneumatic or Hydraulic system can be controlled from.
  • the wall of the Expansion hose 19 is on the one hand on the rear Surface of the ploughshare 1 and on the other hand on the lever arm 5b of the clamping lever 5.
  • Increasing the internal pressure of the expansion hose 19 causes a pivoting movement of the clamping lever 5 in the sense that the clamp claw 5a on the one hand and the Swivel arms 11 on the other hand in the assigned to them Snap recesses 9 and 13 into place. If the scraper bar 4 are replaced, the operator does not need Special tools.
  • the internal pressure of the expansion hose drops 19 all fastening devices 3 loosen at the same time and the scraper bar can be used without difficulty be replaced.
  • the fastening device 3 comprises a rotary wedge 20 as the actuating device, the wedge shape of which can be seen in cross section from FIG. 4.
  • the design of the rotary wedge 20 in plan view results from FIG. 5.
  • the rotary wedge 20 lies between the rear surface of the ploughshare 1 and the lever arm 5b of the clamping lever 5. It is over a bolt 22, which penetrates the ploughshare and a reinforcement disk 23, is connected to a tab 24 which can be rotated by hand or by hammer action and which rests on the front of the ploughshare 1.
  • this rotary wedge 20 can be caused to rotate even in the iced-up state, which means that no special tool is required to move the rotary wedge 20 into or out of its clamping position. If the desired clamping position of the rotary wedge 20 is reached, ie the clamping claws 5a and swivel arms 11 snap into their corresponding recesses 9 and 13, then a safety pin 25 is inserted through a bore 26 provided in the ploughshare 1 and with one end thereof in one of the Indentations 21 brought the rotary wedge. See Fig. 5. 4 also shows the combination scraper bar already mentioned above with the support foot 4b running parallel to the scraper bar 4a.
  • the design of the fastening device shown in FIGS. 6 and 7 3 again comprises an actuating device Turning wedge 20 according to FIG. 5. But here provided for the rotation of the wedge 20 tab 24, the is firmly connected to the rotary wedge 20 via the bolt 22, locked with the help of the locking pin 25. Furthermore the tab 24 is pulled down so far that it is still covers part of the mounting strip 2. This serves a better stabilization of the attachment of the Scraper bar 4.
  • this Example the scraper bar 4a from a particularly thin Sheet steel is formed on the back wall for reinforcement and support vulcanized rubber or plastic material 4c is.
  • the actuator for the Clamping lever 5 selected a slidable flat part 28 is an actuator for the Clamping lever 5 selected a slidable flat part 28.
  • the Flat part 28 projects through one with its holding jaws 28a Longitudinal slot 30 of the ploughshare 1 and can by the Operator on the front surface of the ploughshare 1 can be moved from top to bottom in the drawing.
  • the lever arm 5b of the wedge tip Clamping lever 5 brought into the clamping position.
  • a pin 29 that struck from the front surface of the ploughshare 1 is and extends up to the wedge 28, forms for the wedge 28th a stop that prevents the wedge 28 from automatically can slide up. It is advantageous to use the ploughshare 1 in the clamping area of part 28 with a steel plate 27 strengthen.
  • the invention Fastening device not only for fastening the in the selected description above as examples Scraper is suitable, but also for the connection the conventional scraper bars with a ploughshare can be. All you have to do is ploughshare and scraper bar for snapping the clamps necessary recesses are milled.
  • the Fastening device according to the invention can also for Scraper bars with a profiled surface are used, i.e. in other words, it's a universal usable fastening device with the great advantage that they have no special tools and no special knowledge can be used by any operator and always the advantages mentioned above in terms of material and Allows cost savings.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Clamps And Clips (AREA)

Abstract

The plough has a lever (5) that works on both of its sides in flanges (7) fixed to the rear surface of the plough (1) when in the travel direction. One of its ends (5a) locks into engagement with the rear face of the strip (4). At the other end (5b) one or two transversely spaced arms (11) swing in the same plane as the lever. These lock to engage with the rear plough face by an actuating mechanism (3). This typically incorporates recesses (9) in the plough face, together with a clamping screw (17) passing through the plough and bearing against the lever end.

Description

Die Erfindung betrifft eine Befestigungsvorrichtung für die Herstellung einer lösbaren Verbindung zwischen der Schürfleiste und der Pflugschar eines Schneeräumfahrzeuges.The invention relates to a fastening device for the Establish a detachable connection between the scraper bar and the ploughshare of a snow removal vehicle.

Die bekannten Befestigungsvorrichtungen, mit denen die Schürfleiste am unteren Rand von Schneeräumfahrzeugen befestigt wird, sind als Schraubverbindungen ausgebildet. Hier wird die Schürfleiste mit Hilfe einer Klemmschraube an einer am unteren Rand der Pflugschar angeschweißten Verstärkungsleiste angeschraubt.Um die Befestigung zu sichern,ist es bekannt, die Schürfleiste zwischen eine Klemmschiene, die auf der in Fahrtrichtung des Schneeräumfahrzeuges vorne gelegenen Oberfläche der Schürfleiste anliegt und die genannte Verstärkungsleiste einzuklemmen. Um aber die Stabilität dieser Befestigungsart zu gewährleisten, überdeckt der an der Schürfleiste anliegende Schenkel der Klemmleiste einen relativ großen oberen Bereich der Schürfleiste. Hierdurch wird aber der Abnützungsbereich der Schürfleiste stark verkleinert mit der Folge, daß ein häufiger Wechsel der Schürfleiste vorgenommen und der nicht mehr verwertbare, relativ große Rest der Schürfleiste als Materialverlust in Kauf genommen werden muß.The known fastening devices with which the Scraper bar at the bottom of snow removal vehicles is attached, are designed as screw connections. Here the scraper bar is attached using a clamping screw a reinforcement bar welded to the lower edge of the ploughshare to secure the attachment is it known the scraper between a clamping rail that on the front in the direction of travel of the snow removal vehicle lying surface of the scraper bar and the pinch the reinforcement strip. But for stability to ensure this type of attachment, the Legs of the terminal strip resting on the scraper bar a relatively large upper area of the scraper bar. hereby but the wear area of the scraper bar becomes strong reduced with the consequence that a frequent change of the Scraper and the no longer usable, relatively large remainder of the scraper bar as a loss of material Purchase must be made.

Aufgabe der vorliegenden Erfindung ist es, eine Befestigungsvorrichtung zu schaffen, die es ermöglicht, die vorhandenen Schürfleisten länger in Betrieb zu nehmen, da eine größere Fläche für den beim Räumeinsatz erfolgenden Schürfleistenabrieb zur Verfügung stehen soll.The object of the present invention is a fastening device to create that enables the existing Take scraper bars into operation longer, because of a Larger area for the scraper abrasion that occurs during clearing should be available.

Erfindungsgemäß wird dies durch einen auf in Fahrtrichtung hinten gelegenen Oberflächen des Pfluges angeordneten zweiarmigen Klemmhebel erreicht, der mit seinem einen Ende an der Schürfleiste arretierbar ist und an seinem anderen Ende über Schwenkarme mit der Pflugschar verbindbar ist, wobei die Arretierung des Klemmhebels durch eine auf den Klemmhebel einwirkende Betätigungseinrichtung erfolgt. According to the invention, this is done by moving on in the direction of travel rear surfaces of the plow arranged reached two-armed clamping lever with one end can be locked on the scraper bar and on its other End can be connected to the ploughshare via swivel arms, the locking of the clamping lever by one on the Actuating device acting on the clamping lever takes place.

Vorzugsweise ist der zweiarmige Klemmhebel um eine parallel zur Unterkante der Pflugschar verlaufende Schwenkachse schwenkbar in beidseitig des Klemmhebels angeordneten, mit der in Fahrtrichtung des Schneeräumfahrzeuges hinten gelegenen Oberfläche der Pflugschar fest verbundenen Flanschen gelagert und mit seinem einen Ende in der in Fahrtrichtung des Schneeräumfahrzeuges hinten gelegenen Oberfläche der Schürfleiste arretierbar und an seinem anderen Ende sind eine oder zwei in einem seitlichen Abstand voneinander angeordnete in der gleichen Ebene wie der Klemmhebel schwenkbare Schwenkarme vorgesehen, deren freies , bzw. freie Ende(n) an der in Fahrtrichtung hinten gelegenen Oberfläche der Pflugschar arretierbar ist, bzw. sind, wobei zur Arretierung des Klemmhebels die Betätigungseinrichtung auf den einen Hebelarm des Klemmhebels einwirkt.
Der besondere Vorteil der erfindungsgemäßen Befestigungsvorrichtung liegt darin, daß sich die gesamte Befestigungseinrichtung auf den in Fahrtrichtung des Schneep fluges hinten gelegenen Oberflächen von Pflugschar und Schürfleiste befindet, d.h. mit anderen Worten, die Schürfleiste wird von hinten gegen den unteren Bereich der Pflugschar gedrückt und es wird vermieden, daß bereits ein großer Flächenbereich der Schürfleiste durch Teile der Befestigungsvorrichtung vorne abgedeckt wird und daher für den Arbeitseinsatz gar nicht mehr zur Verfügung steht.
Infolge der erfindungsgemäßen Ausbildung des Klemmhebels erfolgt somit die gesamte Arretierung der Schürfleiste auf der in Fahrtrichtung hinten gelegenen Seite der Pflugschar.
Damit entfällt auch der für die nach oben gerichtete Strömung der Schneemassen unerwünschte Widerstand, der sonst durch die bei den bekannten Befestigungen nach vorne gerichteten Ausmaße der Kantenbefestigungsvorrichtungen vorhanden ist.
Um den Klemmhebel in Eingriff mit der Pflugschar und der Schürfleiste zu bringen, können verschiedene Betätigungseinrichtungen eingesetzt werden.
Gemäß einer vorzugsweisen Ausbildung kann diese Betätigungseinrichtung in Form einer Klemmschraube ausgebildet sein, die die Pflugschar von ihrer vorderen Oberfläche ausgehend durchsetzt und sich mit dem Ende ihres längenverstellbaren Gewindeschaftes gegen den Hebelarm des Klemmhebels abstützt. Anstelle der Klemmschraube kann auch ein Hydraulik-Kolbenaggregat eingebaut sein. die Versorgungshydraulik ist bereits im Fahrzeug vorhanden, so daß die Betätigung des genannten Aggregats leicht bewerkstelligbar ist.
Um den Wechsel der Schürfleisten zu erleichtern, ist es aber wünschenswert, eine Betätigungseinrichtung zu wählen, die von der Bedienungsperson ohne Verwendung von Spezialwerkzeug ausgewechselt und in Betrieb genommen werden kann. Hierfür ist nach einer vorzugsweisen Ausbildung der Erfindung vorgesehen, als Betätigungseinrichtung einen dehnbaren Schlauch zu wählen, der zwischen der hinten gelegenen Oberfläche der Pflugschar und dem Klemmhebel parallel zur Unterkante der Pflugschar verläuft und mit einer Pneumatik oder Hydraulik verbunden ist.
The two-armed clamping lever is preferably arranged to be pivotable about a pivot axis running parallel to the lower edge of the ploughshare in both sides of the clamping lever, with the flanges fixedly connected to the rear surface of the ploughshare in the direction of travel of the snow-clearing vehicle and with its one end in the surface located at the rear in the direction of travel of the snow-clearing vehicle The scraper bar can be locked and at its other end there are one or two swivel arms arranged at a lateral distance from one another in the same plane as the clamping lever, the free or free end (s) of which can be locked on the rear surface of the ploughshare in the direction of travel , or are, with the actuating device acting on the one lever arm of the clamping lever for locking the clamping lever.
The particular advantage of the fastening device according to the invention is that the entire fastening device is located on the rear surfaces of the ploughshare and scraper bar in the direction of travel of the snow plow, ie in other words the scraper bar is pressed from behind against the lower area of the ploughshare and it becomes avoided that a large surface area of the scraper bar is already covered by parts of the fastening device at the front and is therefore no longer available for work.
As a result of the design of the clamping lever according to the invention, the entire locking of the scraper bar takes place on the rear side of the ploughshare in the direction of travel.
This also eliminates the undesirable resistance to the upward flow of the snow masses, which is otherwise present due to the dimensions of the edge fastening devices which are directed forward in the known fasteners.
Various actuating devices can be used to bring the clamping lever into engagement with the ploughshare and the scraper bar.
According to a preferred embodiment, this actuating device can be designed in the form of a clamping screw which passes through the ploughshare starting from its front surface and is supported with the end of its length-adjustable threaded shaft against the lever arm of the clamping lever. A hydraulic piston unit can also be installed instead of the clamping screw. the supply hydraulics are already in the vehicle, so that the actuation of the above-mentioned unit can be easily accomplished.
In order to make changing the scraper bars easier, however, it is desirable to select an actuating device which can be replaced and put into operation by the operator without the use of special tools. For this purpose, according to a preferred embodiment of the invention, an expandable hose is selected as the actuating device which runs parallel to the lower edge of the ploughshare between the rear surface of the ploughshare and the clamping lever and is connected to a pneumatic or hydraulic system.

Der besondere Vorteil dieser Betätigungseinrichtung liegt darin, daß das Lösen des bereits abgeriebenen Schürfleistenrestes vorgenommen werden kann, ohne vereiste Schraubverbindungen lösen zu müssen. Außerdem können alle abgenutzten Schürfleisten auf einmal gelöst werden.The particular advantage of this actuator is in that the loosening of the scraped scraper residue can be made without iced screw connections to have to solve. In addition, everyone can worn scrapers can be loosened at once.

Da es ferner wünschenswert ist, zu Gewichts- und Materialersparnis die Stärke der Schürfleisten zu verringern und damit gleichzeitig auch ein besseres Ergebnis bei der sogenannten Schwarzräumung zu erhalten, ist vorzugsweise die Befestigungsvorrichtung so ausgebildet, daß sie dazu geeignet ist, Schürfleisten an der Pflugschar zu befestigen, deren Stärke relativ gering ist und die mit einem Abstützfuß kombiniert sind. Für die als Klemmverbindung ausgebildete, erfindungsgemäße Befestigungsvorrichtung stellt diese Abart der Schürfleiste kein Problem dar.Since it is also desirable to save weight and material reduce the thickness of the scraper bars and thus at the same time a better result with the so-called Obtaining black clearance is preferably that Fastening device designed so that it is suitable for attaching scraper bars to the ploughshare, the strength of which is relatively low and that with a support foot are combined. For the clamp connection Fastening device according to the invention represents this variant the scraper bar is no problem.

Einzelheiten über vorzugsweise Ausbildungen der erfindungsgemäßen Befestigungsvorrichtung und deren Einsatz in einem Schneeräumfahrzeug ergeben sich aus den Merkmalen der Unteransprüche sowie aus der nachstehenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Details of preferred training of the Fastening device according to the invention and its use in a snow removal vehicle result from the characteristics of the subclaims and from the description below of exemplary embodiments with reference to the drawing.

Hierin zeigen:

Fig. 1
einen Längsschnitt durch eine Verbindung von Pflugschar und Schürfleiste unter Verwendung einer Befestigungsvorrichtung, die mittels einer Stellschraube zu betätigen ist,
Fig. 2
eine abgebrochene Ansicht der Rückseite einer Pflugschar mit zwei in Abstand voneinander angeordneten Befestigungsvorrichtungen gemäß Fig. 1,
Fig.2a
einen vergrößerten Auschnitt aus Fig.2, aus dem die Arretierung zwischen Klemmhebel und Schürfleiste erkennbar ist,
Fig. 3
einen Längsschnitt durch eine Verbindung von Pflugschar und Schürfleiste unter Verwendung einer Befestigungsvorrichtung, die hydraulisch oder pneumatisch betätigbar ist,
Fig. 4
einen Längsschnitt durch eine Verbindung von Pflugschar und Schürfleiste unter Verwendung einer Befestigungsvorrichtung, die mittels eines Drehkeiles betätigbar ist,
Fig. 5
eine Draufsicht auf den Drehkeil mit Stellglied nach Fig. 4,
Fig. 6
einen Längsschnitt durch eine Verbindung von Pflugschar und Schürfleiste unter Verwendung einer Befestigungsvorrichtung, die mit Hilfe eines gegenüber der Ausbildung nach Fig. 4 abgewandelten Dreh keiles betätigbar ist,
Fig. 7
eine Draufsicht auf den Drehkeil mit Stellglied nach Fig.6,
Fig. 8
einen Längsschnitt eines Flachkeils, der in der Pflugschar von oben nach unten verschiebbar ist und
Fig. 9
eine Draufsicht auf den Drehkeil der Fig. 8.
Show here:
Fig. 1
2 shows a longitudinal section through a connection of the ploughshare and scraper bar using a fastening device which can be actuated by means of an adjusting screw,
Fig. 2
3 shows a broken view of the rear of a ploughshare with two fastening devices according to FIG. 1 arranged at a distance from one another,
2a
2 shows an enlarged detail from FIG. 2, from which the locking between the clamping lever and the scraper bar can be seen,
Fig. 3
a longitudinal section through a connection of ploughshare and scraper bar using a fastening device which can be actuated hydraulically or pneumatically,
Fig. 4
3 shows a longitudinal section through a connection of ploughshare and scraper bar using a fastening device which can be actuated by means of a rotating wedge,
Fig. 5
4 shows a top view of the rotary wedge with actuator according to FIG. 4,
Fig. 6
3 shows a longitudinal section through a connection of the ploughshare and scraper bar using a fastening device which can be actuated with the aid of a rotary wedge which is modified compared to the embodiment according to FIG. 4,
Fig. 7
3 shows a top view of the rotary wedge with an actuator according to FIG. 6,
Fig. 8
a longitudinal section of a flat wedge, which is displaceable in the ploughshare from top to bottom and
Fig. 9
8 shows a top view of the rotary wedge of FIG. 8.

In der nachstehenden Beschreibung sind sich entsprechende Teile der Figuren mit übereinstimmenden Bezugszeichen gekennzeichnet.In the description below are the same Parts of the figures with the same reference numerals characterized.

An einer Pflugschar 1 ist längs ihres unteren Randes eine Verstärkungsleiste 2 in Form eines L-Profiles angeschweißt, deren einer Schenkel 2a die Länge der Pflugschar 1 nach unten fortsetzt und dessen in Fahrtrichtung vorne gelegene Oberfläche mit der Oberfläche der Pflugschar 1 auf gleicher Höhe liegt. Der andere Schenkel 2b ragt nach hinten und weist Aussparungen 2c an den Stellen der Verstärkungsleiste 2 auf, wo Befestigungsvorrichtungen 3 für eine Verbindung zwischen der Pflugschar 1 und einer Schürfleiste 4 angeordnet werden sollen.On a ploughshare 1 there is one along its lower edge Reinforcement bar 2 welded in the form of an L-profile, one leg 2a of the length of the ploughshare 1 after continues below and its front in the direction of travel Surface with the surface of the ploughshare 1 on the same Height. The other leg 2b protrudes backwards and has recesses 2c at the locations of the reinforcement strip 2 on where fasteners 3 for connection between the ploughshare 1 and a scraper bar 4 to be arranged.

Die Schürfleiste 4 ist im Beispiel der Fig. 1 als eine sogenannte Kombileiste ausgebildet. Diese Kombileiste kann innen hohl oder mit Gummi, Kunststoff, Mineralstoffen, Guß- oder sonstigen Gemischen gefüllt sein. Die Ummantelung dieser Schürfleiste 4 ist vorwiegend aus verschleißarmen Stahl gebildet, doch kennt man auch Schürfleisten, die aus entsprechend hartem Kunststoff hergestellt sind.The scraper bar 4 is in the example of FIG. 1 as one so-called combination bar trained. This combination bar can hollow inside or with rubber, plastic, minerals, Cast or other mixtures can be filled. The casing This scraper bar 4 is mainly made of low-wear Steel formed, but you also know scrapers that from are made according to hard plastic.

Der in Fahrtrichtung des Schneeräumfahrzeuges vorne gelegene Teil 4a dieser Schürfleiste 4 kann bei einer Kombileiste aus einem wesentlich dünneren Material bestehen als bei massiven Schürfleisten, da die Stabilität der Schürfleiste durch den hinten gelegenen Abstützfuß 4b, der etwa die Länqe der Schürfleiste 4a hat, gewährleistet ist. Hierdurch wird der Vorteil erreicht, daß durch die geringere Stärke der Schürfleiste 4a Material gespart, das Gewicht der Schürfleiste geringer und damit der Energieaufwand vermindert ist und trotzdem die Räumleistung infolge der dünneren Schürfleiste 4a, insbesondere die sogenannte Schwarzräumung, gegenüber den herkömmlichen Schürfleisten verbessert wird. Die Form der Kombileiste 4 ist in diesem Beispiel konisch, sich nach unten verjüngend ausgebildet. The one in front in the direction of travel of the snow removal vehicle Part 4a of this scraper bar 4 can with a combination bar consist of a much thinner material than in massive scraper bars because of the stability of the scraper bar through the rear support leg 4b, which is about the Length of the scraper bar 4a is guaranteed. hereby the advantage is achieved that the lower strength the scraper 4a material saved, the weight of the Scraper bar less and thus the energy expenditure is reduced and still the clearing performance due to thinner scraper bar 4a, especially the so-called Black clearance, compared to conventional scraper bars is improved. The shape of the combination strip 4 is in this Example conical, tapering towards the bottom.

Wie aus Fig. 4 zu erkennen ist, können aber die vorne gelegene Schürfleiste 4a und der hinten gelegene Abstützfuß 4b auch parallel zueinander verlaufen.As can be seen from Fig. 4, but the front located scraper bar 4a and the rear support foot 4b also run parallel to one another.

Bei der in abgebrochener Darstellung in Fig. 2 gezeigten Pflugschar sind zwei im Abstand voneinander angeordnete Befestigungsvorrichtungen 3 für die Schürfleiste 4 dargestellt.Nur im Bereich jeder Befestigungsvorrichtung 3 ist die Schürfleiste 4 hier als Kombileiste mit Abstützfuß 4b ausgebildet.The one shown in broken representation in FIG. 2 Ploughshare are two fastening devices arranged at a distance from one another 3 shown for the scraper bar 4 in the area of each fastening device 3 the scraper bar 4 here as a combination bar with support leg 4b educated.

Die Breitenausdehnung des Abstützfußes 4b übersteigt die Breiten der Befestigungsvorrichtungen 3 geringfügig. Die Schürfleiste 4a ist im Beispiel einstückig ausgebildet, ihre Breite entspricht der Breite der Pflugschar 1.The width of the support leg 4b exceeds that Widths of the fasteners 3 slightly. The Scraper bar 4a is formed in one piece, her Width corresponds to the width of the ploughshare 1.

Die Befestigungsvorrichtung 3 umfaßt als wichtigste Komponente einen als zweiarmiger Hebel ausgebildeten Klemmhebel 5, der um eine Schwenkachse 6 in der in Fahrtrichtung des Schneeräumfahrzeuges liegenden vertikalen Ebene schwenkbar ist. Für die Halterung des Klemmhebels 5 sind an der hinten gelegenen Oberfläche der Pflugschar 1 Befestigungslaschenpaare 7 angeschweißt, die in einem Abstand voneinander angeordnet sind und die Lagerung für die Enden der Schwenkachse 6 des Klemmhebels 5 bilden, der zwischen beiden Befestigungslaschen 7 schwenkbar gehalten ist. Die Schwenkachse 6 ist durch Splinte 8 gegen Verrutschen gesichert.The fastening device 3 comprises the most important Component a clamping lever designed as a two-armed lever 5, which is about a pivot axis 6 in the direction of travel of the snow removal vehicle lying vertical plane pivotable is. For holding the clamping lever 5 are on the rear surface of the ploughshare 1 pairs of fastening lugs 7 welded at a distance from each other are arranged and storage for the ends of the Form pivot axis 6 of the clamping lever 5, the between the two Mounting tabs 7 is pivotally held. The pivot axis 6 is secured against slipping by pins 8.

Das eine Ende 5a des Klemmhebels 5 ist als Klemmpratze ausgebildet, die in Klemmstellung in eine Aussparung 9 auf der hinteren Oberfläche der Schürfleiste 4a eingreift. In Fig.2a ist in vergrößerter Darstellung die Ansicht des oberen Teiles der Schürfleiste 4a mit einer geschliffenen, gefrästen oder erodierten Aussparung 9 gezeigt, in die das Ende 5a des Klemmhebels 5, ausgebildet als Klemmpratze eingreift.Dabei kann selbstverständlich die Form der Aussparung verschieden gewählt sein. Da hier die Breite der Aussparung 9 nur unwesentlich größer als die Breite der Klemmpratze 5a ist, ist ein seitliches Verschieben der Schürfleiste 5 relativ zur Pflugschar 1 nicht möglich, wenn einmal durch ein Hindernis auf die Schürfleiste 4 ein in seitlicher Richtung ausgeübter Druck so groß sein sollte, daß er die Flächenpressung durch die Kraft der Verklemmung übersteigt. Als zusätzliche Sicherung gegen ein Herausrutschen der Schürfleiste 5 aus der Verklemmung ist es möglich, die Schürfleiste im Bereich ihrer in der Klemmung befindlichen Kante abzuwinkeln. Dann kann die Schürfleiste 4 auch beim Lösen der Verklemmung nicht nach unten herausfallen. Siehe hierzu Pos.10. One end 5a of the clamping lever 5 is a clamping claw formed in the recessed position in a recess 9 engages the rear surface of the scraper bar 4a. In 2a is an enlarged view of the upper part of the scraper bar 4a with a ground, milled or eroded recess 9 shown in the End 5a of the clamping lever 5, designed as a claw, engages can of course the shape of the recess be chosen differently. Because here the width of the recess 9 only slightly larger than the width of the clamping claw 5a is a lateral displacement of the scraper bar 5 not possible relative to ploughshare 1, once through an obstacle on the scraper bar 4 in a side Directional pressure should be so large that it Surface pressure by the force of the jam exceeds. As additional protection against slipping out of the Scraper 5 from the jam, it is possible to Scraper bar in the area of their clamped Bend the edge. Then the scraper 4 can also Release the jam from falling down. Please refer see item 10.

Am anderen Hebelarm 5b des Klemmhebels 5 sind zwei Schwenkarme 11 angelenkt, die um die Gelenkachse 12 in der gleichen Ebene wie der Klemmhebel 5 schwenkbar sind. Die Schwenkarme 11 befinden sich zu beiden Seiten des Klemmhebels 5 und greifen in Klemmstellung des Klemmhebels 5 in eine von mehreren übereinander an der Pflugschar 1 vorgesehenen Aussparungen 13 ein. Durch eine relativ schwache Zugfeder 14, die an der Pflugschar 1 bei 15 eingehängt ist und mit dem Klemmhebel 5 verbunden ist, wird dieser in angehobener Stellung gehalten und zwar unabhängig von der Einstellung einer Betätigungseinrichtung 16. Nachdem die Schürfleiste 4 nach oben bis an den rechten Winkel des L-Profils 2 eingeschoben wurde, bewirkt diese Betätigungseinrichtung 16, daß der Klemmhebel 5 die Verbindung zwischen der Schürfleiste 4 und der Pflugschar 1 herbeiführt.On the other lever arm 5b of the clamping lever 5 are two pivot arms 11 hinged about the hinge axis 12 in the same Level as the clamping lever 5 are pivotable. The swivel arms 11 are located on both sides of the clamping lever 5 and engage in the clamping position of the clamping lever 5 in one of several provided one above the other on the ploughshare 1 Recesses 13 a. Due to a relatively weak tension spring 14, which is attached to the ploughshare 1 at 15 and with the clamping lever 5 is connected, this is raised Position held regardless of the setting an actuating device 16. After the scraper bar 4 pushed up to the right angle of the L-profile 2 was, this actuator 16 causes the clamping lever 5 the connection between the scraper bar 4 and the ploughshare 1 brings about.

Nach Fig. 1 ist die Betätigungseinrichtung 16 durch eine Schraube 17 gebildet, die von der Vorderseite der Pflugschar 1 ausgehend, durch einen mit der hinteren Oberfläche der Pflugschar 1 verschweißten Befestigungsklotz 18 hindurchgeschraubt wird. Das Ende ihres Gewindeschaftes 17a legt sich dabei an dem einen Arm 5b des Klemmhebels 5 an und bewirkt eine Verschwenkung des Klemmhebels 5 dergestalt, daß die Klemmpratze 5a in die Aussparung 9 der sich an den L-Profilschenkel 2a anlehnenden Schürfleiste 4a gelangt. Gleichzeitig gleiten auch die freien Enden der Schwenkarme 11 längs der rückwärtigen Oberfläche der Pflugschar und rasten in eine der Aussparungen 13 ein. Die Schürfleiste 4 ist somit mit der Pflugschar 1 fest verbunden.1, the actuator 16 is by a Screw 17 formed by the front of the ploughshare 1 starting from one with the rear surface of the Ploughshare 1 screwed through welded mounting block 18 becomes. The end of its threaded shaft 17a settles thereby on one arm 5b of the clamping lever 5 and causes a pivoting of the clamping lever 5 such that the Clamping claw 5a in the recess 9 of the L-profile leg 2a rests on scraper bar 4a. simultaneously the free ends of the swivel arms 11 also slide along the back surface of the ploughshare and rest in one of the recesses 13. The scraper bar 4 is thus firmly connected to the ploughshare 1.

Wie aus der Fig. 1 ohne weiteres ersichtlich ist, ist bei der erfindungsgemäßen Verklemmung der Schürfleiste 4 mit der Pflugschar 1 von hinten ein größerer Bereich der Schürfleiste frei zugänglich, d.h. es ist bei dieser Art der Befestigung mehr Schürfleistenabrieb möglich. Es handelt sich hierdurch um eine Verbesserung von ungefähr 30% und mehr gegenüber den in herkömmlicher Weise befestigten Schürfleisten.As can easily be seen from FIG. 1, at the jamming of the scraper bar 4 with the Ploughshare 1 from behind a larger area of the scraper bar freely accessible, i.e. it is with this type of Attachment of more scraper abrasion possible. It deals an improvement of approximately 30% and more compared to those fixed in the conventional way Scraper blades.

Somit ist eine längere Lebensdauer der Schürfleisten erreichbar, was sich in einer beträchtlichen Kostensenkung infolge des geringeren Materialverbrauchs auswirkt.This means that the scraper bars have a longer service life achievable, which translates into a substantial cost reduction due to the lower material consumption.

Die in den Fig. 3 bis 6 gezeigten Befestigungsvorrichtungen unterscheiden sich im wesentlichen nur durch die Ausbildung der Betätigungseinrichtungen 16, mit denen der Klemmhebel 5 in Arrtierstellung gebracht wird, nicht aber in deren Wirkung auf den Klemmhebel 5.The fastening devices shown in FIGS. 3 to 6 differ essentially only in the training the actuating devices 16 with which the clamping lever 5 is brought into the locking position, but not in their Effect on the clamping lever 5.

In Fig. 3 ist die Betätigungseinrichtung 16 in Form eines Dehnschlauches 19 ausgebildet. Der Dehnschlauch 19 kann allen an der Pflugschar 1 vorgesehenen Befestigungsvorrichtungen 3 gemeinsam sein und von einer Pneumatik- oder Hydraulikanlage aus gesteuert werden. Die Wandung des Dehnschlauches 19 liegt einerseits an der hinteren Oberfläche des Pflugschar 1 und andererseits am Hebelarm 5b des Klemmhebels 5 an. Erhöhung des Innendrucks des Dehnschlauches 19 bewirkt eine Schwenkbewegung des Klemmhebels 5 in dem Sinne, daß die Klemmpratze 5a einerseits und die Schwenkarme 11 andererseits in die ihnen zugeordneten Aussparungen 9 bzw. 13 einrasten. Soll die Schürfleiste 4 ausgewechselt werden, benötigt die Bedienungsperson kein Spezialwerkzeug. Bei Absinken des Innendrucks des Dehnschlauches 19 lösen sich alle Befestigungsvorrichtungen 3 gleichzeitig und die Schürfleiste kann ohne Schwierigkeiten ausgewechselt werden.In Fig. 3, the actuator 16 is in the form of a Expansion hose 19 formed. The expansion hose 19 can all fastening devices provided on the ploughshare 1 3 be common and by a pneumatic or Hydraulic system can be controlled from. The wall of the Expansion hose 19 is on the one hand on the rear Surface of the ploughshare 1 and on the other hand on the lever arm 5b of the clamping lever 5. Increasing the internal pressure of the expansion hose 19 causes a pivoting movement of the clamping lever 5 in the sense that the clamp claw 5a on the one hand and the Swivel arms 11 on the other hand in the assigned to them Snap recesses 9 and 13 into place. If the scraper bar 4 are replaced, the operator does not need Special tools. When the internal pressure of the expansion hose drops 19 all fastening devices 3 loosen at the same time and the scraper bar can be used without difficulty be replaced.

Aus Fig. 3 ist auch besonders gut ersichtlich, daß der Abstützfuß 4b der Kombischürfleiste 4 durch an den Befestigungslaschen 7 nach unten vorspringende Nasen 7b einen besseren Halt gegen ein Wegknicken bekommt.From Fig. 3 it is also particularly clear that the Support foot 4b of the combi scraper 4 through to the Fastening tabs 7 projecting lugs 7b gets a better grip against buckling.

Die Befestigungseinrichtung 3 nach Fig. 4 und 5 umfaßt als Betätigungseinrichtung einen Drehkeil 20, dessen Keilform im Querschnitt aus Fig. 4 zu erkennen ist. Die Ausbildung des Drehkeiles 20 in Draufsicht ergibt sich aus Fig. 5. Hier erkennt man den mit Einbuchtungen 21 versehenen Umfang des scheibenförmigen Drehkeiles 20. Der Drehkeil 20 liegt zwischen der hinteren Oberfläche der Pflugschar 1 und dem Hebelarm 5b des Klemmhebels 5. Er ist über einen Bolzen 22, der die Pflugschar und eine Verstärkungsscheibe 23 durchdringt, mit einer von Hand oder durch Hammereinwirkung drehbaren Lasche 24 verbunden, die auf der Vorderseite der Pflugschar 1 aufliegt. Durch Verwendung eines Hammers oder eines anderen festen Gegenstandes kann dieser Drehkeil 20 auch im vereisten Zustand zu einer Drehbewegung veranlaßt werden.Das heißt, man benötigt kein Spezialwerkzeug, um den Drehkeil 20 in oder aus seiner Klemmstellung zu bewegen. Ist die gewünschte Klemmstellung des Drehkeiles 20 erreicht, d.h. die Klemmpratzen 5a und Schwenkarme 11 rasten in ihre entsprechenden Aussparungen 9 bzw. 13 ein, dann wird ein Sicherheitsstift 25 durch eine in der Pflugschar 1 vorgesehene Bohrung 26 hindurchgesteckt und mit seinem einen Ende in eine der Einbuchtungen 21 des Drehkeiles gebracht. Siehe hierzu Fig. 5.
Aus Fig. 4 ist auch die bereits vorstehend erwähnte Kombischürfleiste mit parallel zur Schürfleiste 4a verlaufendem Abstützfuß 4b zu erkennen.
The fastening device 3 according to FIGS. 4 and 5 comprises a rotary wedge 20 as the actuating device, the wedge shape of which can be seen in cross section from FIG. 4. The design of the rotary wedge 20 in plan view results from FIG. 5. Here one can see the circumference of the disk-shaped rotary wedge 20 provided with indentations 21. The rotary wedge 20 lies between the rear surface of the ploughshare 1 and the lever arm 5b of the clamping lever 5. It is over a bolt 22, which penetrates the ploughshare and a reinforcement disk 23, is connected to a tab 24 which can be rotated by hand or by hammer action and which rests on the front of the ploughshare 1. By using a hammer or other solid object, this rotary wedge 20 can be caused to rotate even in the iced-up state, which means that no special tool is required to move the rotary wedge 20 into or out of its clamping position. If the desired clamping position of the rotary wedge 20 is reached, ie the clamping claws 5a and swivel arms 11 snap into their corresponding recesses 9 and 13, then a safety pin 25 is inserted through a bore 26 provided in the ploughshare 1 and with one end thereof in one of the Indentations 21 brought the rotary wedge. See Fig. 5.
4 also shows the combination scraper bar already mentioned above with the support foot 4b running parallel to the scraper bar 4a.

Die in Fig. 6 und 7 gezeigte Ausbildung der Befestigungsvorrichtung 3 umfaßt als Betätigungsvorrichtung wiederum einen Drehkeil 20 entsprechend der Fig. 5. Hier wird aber die für die Drehung des Keiles 20 vorgesehene Lasche 24, die über den Bolzen 22 fest mit dem Drehkeil 20 verbunden ist, mit Hilfe des Sicherungsstiftes 25 arretiert. Darüber hinaus ist die Lasche 24 so weit nach unten gezogen, daß sie noch einen Teil der Befestigungsleiste 2 abdeckt. Dies dient einer besseren Stabilisierung der Befestigung der Schürfleiste 4.The design of the fastening device shown in FIGS. 6 and 7 3 again comprises an actuating device Turning wedge 20 according to FIG. 5. But here provided for the rotation of the wedge 20 tab 24, the is firmly connected to the rotary wedge 20 via the bolt 22, locked with the help of the locking pin 25. Furthermore the tab 24 is pulled down so far that it is still covers part of the mounting strip 2. This serves a better stabilization of the attachment of the Scraper bar 4.

Ferner soll darauf hingewiesen werden, daß bei diesem Beispiel die Schürfleiste 4a aus einem besonders dünnen Stahlblech gebildet ist, auf dessen Rückwand zur Verstärkung und Abstützung Gummi oder Kunststoffmaterial 4c aufvulkanisiert ist.It should also be noted that this Example the scraper bar 4a from a particularly thin Sheet steel is formed on the back wall for reinforcement and support vulcanized rubber or plastic material 4c is.

In Fig. 8 und 9 ist als Betätigungseinrichtung für den Klemmhebel 5 ein verschiebbarer Flachteil 28 gewählt. Der Flachteil 28 ragt mit seinen Haltebacken 28a durch einen Längsschlitz 30 der Pflugschar 1 hindurch und kann von der Bedienungsperson auf der vorderen Oberfläche der Pflugschar 1 in der Zeichnung von oben nach unten verschoben werden. Dabei wird durch die Keilspitze der Hebelarm 5b des Klemmhebels 5 in Klemmstellung gebracht. Einen Stift 29, der von der vorderen Oberfläche der Pflugschar 1 aus eingeschlagen wird und bis zum Keil 28 reicht, bildet für den Keil 28 einen Anschlag, der verhindert, daß der Keil 28 selbsttätig nach oben rutschen kann. Es ist vorteilhaft, die Pflugschar 1 im Klemmbereich des Teiles 28 mit einer Stahlplatte 27 zu verstärken.8 and 9 is an actuator for the Clamping lever 5 selected a slidable flat part 28. The Flat part 28 projects through one with its holding jaws 28a Longitudinal slot 30 of the ploughshare 1 and can by the Operator on the front surface of the ploughshare 1 can be moved from top to bottom in the drawing. The lever arm 5b of the wedge tip Clamping lever 5 brought into the clamping position. A pin 29 that struck from the front surface of the ploughshare 1 is and extends up to the wedge 28, forms for the wedge 28th a stop that prevents the wedge 28 from automatically can slide up. It is advantageous to use the ploughshare 1 in the clamping area of part 28 with a steel plate 27 strengthen.

Abschließend ist zu erwähnen, daß die erfindungsgemäße Befestigungsvorrichtung nicht nur zur Befestigung der in der vorstehenden Beschreibung als Beispiele gewählten Schürfleisten geeignet ist, sondern auch für die Verbindung der herkömmlichen Schürfleisten mit einer Pflugschar eingesetzt werden kann. Hierfür müssen lediglich in Pflugschar und Schürfleiste die für das Einrasten der Klemmpratzen erforderlichen Aussparungen eingefräst werden. Die erfindungsgemäße Befestigungsvorrichtung kann aber auch für Schürfleisten mit profilierter Oberfläche Verwendung finden, d.h. mit anderen Worten, es handelt sich um eine universell einsetzbare Befestigungsvorrichtung mit dem großen Vorteil, daß sie ohne Spezialwerkzeuge und ohne besondere Kenntnisse von jeder Bedienungsperson benützt werden kann und stets die vorstehend genannten Vorteile hinsichtlich Material- und Kostenersparnis ermöglicht.Finally, it should be mentioned that the invention Fastening device not only for fastening the in the selected description above as examples Scraper is suitable, but also for the connection the conventional scraper bars with a ploughshare can be. All you have to do is ploughshare and scraper bar for snapping the clamps necessary recesses are milled. The Fastening device according to the invention can also for Scraper bars with a profiled surface are used, i.e. in other words, it's a universal usable fastening device with the great advantage that they have no special tools and no special knowledge can be used by any operator and always the advantages mentioned above in terms of material and Allows cost savings.

Claims (18)

  1. An attachment arrangement for producing a releasable connection between the scraper and the plough of a snow-clearing vehicle, characterised by a two-armed clamping lever (5) arranged on surfaces of the plough located rearwardly in the drive direction, the lever being securable at one end (5a) to the scraper (4) and connectable at its other end (5b) by means of pivotal arms (11) to the plough (10, wherein the securement of the clamping lever (5) is effected by an actuation device acting on the clamping lever (5).
  2. An attachment arrangement according to claim 1, characterised in that the two-armed clamping lever (5) is pivotable about a pivotal shaft (6) extending parallel to the bottom edge of the plough (1), the shaft being mounted in flanges (7) arranged on both sides of the clamping lever and fixedly connected to the surface of the plough (1) located rearwardly in the drive direction of the snow-clearing vehicle, and the one end (5a) is securable in the surface of the scraper (4) located rearwardly in the drive direction of the snow-clearing vehicle and in that at the other end (5b) there are provided, in the same plane as the clamping lever (5), one or two mutually laterally spaced pivotable pivot arms (11), the free end(s) of which is/are securable on the surface of the plough (1) located rearwardly in the drive direction, wherein, for securement of the clamping lever (5) the actuation device (16) operates on the one lever arm (5b) of the clamping lever (5).
  3. An arrangement according to claim 1 or 2, characterised in that there are provided, in the rearwardly located surfaces of the plough (1) and scraper (4), recesses (9, 13) which serve as securement seatings for the ends of the clamping lever (5) or the pivotal arms (11).
  4. An arrangement according to any one of the preceding claims, characterised in that the actuation device for the clamping lever (5) is formed as a clamping screw (17), which passes through the plough (1) from its front surface with the end of its longitudinally-adjustable threaded shaft (17a) engaging the lever arm (5a) of the clamping lever (5).
  5. An arrangement according to any one of the preceding claims, characterised in that the actuation device is formed as a hydraulic-cylinder-piston combination.
  6. An arrangement according to any preceding claim, characterised in that the actuation device for the clamping lever is formed by an expandable tube (19) which extends parallel to the bottom edge of the plough between the rearwardly located surface of the plough (1) and the clamping lever and is connected to pneumatic or hydraulic means.
  7. An arrangement according to any preceding claims, characterised in that the actuation device for the clamping lever (5) is in the form of a wedge (20) which is arranged between the rear surface of the plough (1) and the clamping lever (5) and is actuable by means of a bolt (22), which passes through the plough (1), and an adjustment member (24) adjacent to the front surface of the plough.
  8. An arrangement according to claim 7, characterised in that the clamping part of the wedge (20) has a conical cross-section.
  9. An arrangement according to any one of preceding claims, characterised in that the position of the clamping wedge (20) is securable with the aid of a securing pin (25) which connects the adjustable member (24) or the clamping wedge (20) to the plough.
  10. An arrangement according to any preceding claim, characterised in that the wedge (20) is in the form of a rotating wedge.
  11. An arrangement according to any preceding claim, characterised in that the wedge (20) is in the form of a displaceable wedge.
  12. An arrangement according to any preceding claim, characterised in that an integrally-formed scraper (4a) comprises at least two mutually-spaced clamping levers (5).
  13. An arrangement according to any preceding claim, characterised in that with a scraper or plough divided into a plurality of scraper surface regions, each surface region comprises at least one clamping lever (5).
  14. An arrangement according to any preceding claim, characterised in that in the region of each clamping lever (5) the scraper (4a) is combined with a support foot (4b) located rearwardly in the drive direction.
  15. An arrangement according to claim 14, characterised in that the support foot (4b) is formed as an auxiliary scraper.
  16. An arrangement according to any preceding claim, characterised in that the scraper and the support foot (4b) form a conical hollow body which tapers towards the bottom free end of the scraper.
  17. An arrangement according to any preceding claim, characterised in that the hollow body is filled with rubber and/or plastics material and/or mineral material.
  18. An arrangement according to any preceding claim, characterised in that there is arranged along the bottom edge of the plough (1) a reinforcement strip (2) in the form of an L- or U-profile element, one arm (2a) of which forms a downward extension of the plough (1) and the other arm (2b) of which is directed towards the clamping lever (5b) and optionally extends at a maximum to the support foot (4b) of the scraper.
EP97121827A 1996-12-19 1997-12-11 Device for mounting a scraperblade to a plough of a snow clearing apparatus Expired - Lifetime EP0849401B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29622102U DE29622102U1 (en) 1996-12-19 1996-12-19 Fastening device for scraper bars on the ploughshare of a snow removal vehicle
DE29622102U 1996-12-19

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EP0849401A1 EP0849401A1 (en) 1998-06-24
EP0849401B1 true EP0849401B1 (en) 2002-03-27

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AT (1) ATE215151T1 (en)
DE (2) DE29622102U1 (en)

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US10480140B2 (en) 2014-10-17 2019-11-19 Jimmy Vigneault Scraper blade device with juxtaposed blade segments having a swivel interconnection between mating edges
US10865533B2 (en) 2017-05-12 2020-12-15 Michael F. Stephan Flexible snowplow cutting edge
US11203852B2 (en) 2017-01-05 2021-12-21 9407-4895 Quebec Inc. Scraping device for cleaning a roadway surface

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DE29704896U1 (en) * 1997-03-18 1997-05-07 Maier, Walter, 84478 Waldkraiburg Scraper bar for snow removal vehicles
DE102006021910A1 (en) 2006-05-11 2007-11-15 Gummi Küper GmbH & Co KG Corrugated scraper

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10480140B2 (en) 2014-10-17 2019-11-19 Jimmy Vigneault Scraper blade device with juxtaposed blade segments having a swivel interconnection between mating edges
US11131071B2 (en) 2014-10-17 2021-09-28 9407-4895 Quebec Inc. Scraper blade device with juxtaposed blade segments having a swivel interconnection between mating edges
US11203852B2 (en) 2017-01-05 2021-12-21 9407-4895 Quebec Inc. Scraping device for cleaning a roadway surface
US11946220B2 (en) 2017-01-05 2024-04-02 9407-4895 Quebec Inc. Scraping device for cleaning a roadway surface
US10865533B2 (en) 2017-05-12 2020-12-15 Michael F. Stephan Flexible snowplow cutting edge
US10889949B2 (en) 2017-05-12 2021-01-12 Michael F. Stephan Flexible snowplow cutting edge

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DE59706748D1 (en) 2002-05-02
ATE215151T1 (en) 2002-04-15
DE29622102U1 (en) 1997-02-20
EP0849401A1 (en) 1998-06-24

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