EP4026949A1 - Scraper bars assembly and scraper bars cartridge - Google Patents
Scraper bars assembly and scraper bars cartridge Download PDFInfo
- Publication number
- EP4026949A1 EP4026949A1 EP22020005.9A EP22020005A EP4026949A1 EP 4026949 A1 EP4026949 A1 EP 4026949A1 EP 22020005 A EP22020005 A EP 22020005A EP 4026949 A1 EP4026949 A1 EP 4026949A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- scraper
- segments
- strip
- cassette
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 description 6
- 238000007790 scraping Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
- E01H5/06—Apparatus 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
- E01H5/061—Apparatus 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
- E01H5/06—Apparatus 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
- E01H5/061—Apparatus 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
- E01H5/062—Apparatus 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 by scraper blades displaceable for shock-absorbing purposes
Definitions
- the invention relates to a scraper assembly for attachment to a plow blade, the scraper assembly comprising adjustable scraper segments.
- the invention further relates to a scraper cartridge for use in a scraper assembly according to the invention.
- the scraper bar can be made of steel, for example.
- a scraper is typically a plate-like member that extends substantially the full length of the plow blade.
- scraper arrangements Since a rigid scraper cannot adapt to uneven ground, scraper arrangements have already become known which include scraper segments that can be adjusted in the height direction. Such training is for example in the U.S.5743032 and the SE 454279 described.
- the heavy traffic causes significant ruts in the road surface in many areas.
- the streets are usually cambered so that surface water can be drained off to the side can.
- the roads are often in poor condition and have potholes and the like.
- a plow with a width of 3 m which for stability reasons consists of two or three rigid elements that can move a little relative to each other, has relatively poor adaptability to punctiform grooves or holes.
- the present invention therefore aims to further develop a scraper blade arrangement in such a way that the adaptability is increased and the clearing result on uneven road surfaces is improved.
- the present invention also aims to make it easier to replace the scraper rails and to increase the stability of adjustable scraper rail elements.
- the invention essentially provides for a scraper blade arrangement of the type mentioned at the outset that the adjustable scraper blade segments comprise at least two groups of adjustable scraper blade segments, with the adjustable scraper blade segments of one group each being arranged in a scraper blade cassette in which the scraper blade segments are arranged in a transverse to a scraping edge of the scraper blade segments are guided adjustable against a spring force, wherein the scraper blade segments in the respective scraper blade cartridge can be displaced independently of one another between a retracted and an extended position, and that the scraper blade cartridge has a sliding plate on which the scraper blade segments slide during the displacement movement.
- the scraper blade arrangement according to the invention thus consists of a combination of a sliding plate with a large number of adjustable scraper blade segments. Due to the fact that the scraper bar segments can be adjusted independently of one another in the height direction, ie transversely to the scraper edge, they can adapt to bumps in the road while at the same time the rigid scraper edge remains in contact with the road surface. When the individual scraper segments are extended downwards, they can also scrape the snow off lower-lying areas of the road, such as grooves or holes. If, on the other hand, there is no space below the scraping edge of the rigid scraper bar for extending the scraper bar segments, they remain in the upwardly retracted position due to the plow blade's own weight.
- a further feature according to the invention lies in the subdivision of the scraper segments arranged along the longitudinal extent of the rigid scraper into at least two, preferably at least three groups of scraper segments.
- the adjustable scraper blade segments of a group are each combined in a scraper blade cartridge in which the scraper blade segments are adjustably guided in a direction running transversely to a scraper edge of the scraper blade segments.
- the arrangement of a plurality of scraper segments in a scraper cartridge enables the joint assembly and disassembly of the scraper segments, so that downtimes are minimized.
- the scraper blade cassette is regarded as a wearing part that can be easily replaced if necessary.
- the scraper rail segments can be slid parallel to the sliding plate on the latter.
- the scraper segments can be supported on the sliding plate, so that the scraping forces that occur when they come into contact with the road are not only absorbed by the individual scraper segments, but also by the sliding plate behind them.
- the scraper ledge segments are designed as flat, plate-like elements, the plate plane of which runs parallel to the plane of the rigid slide plate.
- the feature that the scraper segments slide on the rigid skid plate during translational movement does not mean that the scraper segments and the rigid skid plate must be in direct contact. Gliding can also be mediated by an intermediate layer or an intermediate element which preferably has friction-optimized properties.
- the sliding plate has a fastening section which is fastened to a scraper blade carrier.
- the scraper blade cassette can be designed as a standard component, while any necessary adaptation to different assembly situations, e.g. different hole patterns of the plow blade or the scraper blade carrier, can be made by means of a correspondingly adapted design of the sliding plate.
- a preferred embodiment provides that the fastening section of the sliding plate is fastened to the scraper bar carrier with the aid of fastening elements, in particular bolts, which pass through bores formed in the fastening section is attached.
- fastening elements in particular bolts
- the bores are designed as countersunk bores, which allows a countersunk arrangement of the head of the fastening elements or screw bolts.
- scraper blade cassette has a housing for the open element on the side facing the cover element Includes scraper segments.
- the open housing is closed by the cover element as soon as the housing is attached to the scraper rail support.
- the scraper segments each have an elongated guide slot running in the direction of displacement and that positioning bushings are fastened to the sliding plate, which pass through the guide slot and form a guide element for the displacement movement of the scraper segments .
- the positioning bushings each have a bore with an internal thread for a fastening screw, with which a plate-like cover element of the scraper blade cassette is fastened.
- each scraper blade segment is assigned at least one spring element arranged in the scraper blade cartridge, in particular a helical spring, against which the respective scraper blade segment can be adjusted.
- two adjacent scraper segments have form-fitting elements that interact with one another laterally and limit the relative displacement movement of the scraper segments. This limits the maximum travel of each scraper segment relative to its adjacent scraper segment. If the maximum permissible stroke relative to the adjacent scraper segment is significantly smaller than the stroke that is possible without limitation, e.g. less than half the otherwise possible stroke, this means that a scraper segment cannot be fully extended individually, but only in the Course with the neighboring scraper segments.
- the form-fitting elements interacting with one another are formed by a laterally projecting pin of one scraper blade segment and by a lateral groove of the other scraper blade segment, into which the pin engages.
- An independent aspect of the invention relates to a scraper blade cartridge for use in a scraper blade arrangement according to the invention, comprising a plurality of scraper blade segments, which are adjustably guided in the scraper blade cartridge against a spring force in a direction running transversely to a scraper edge of the scraper blade segments, the scraper blade segments in the scraper blade cartridge being independent of one another are displaceable between a retracted and an extended position.
- the scraper segments are here arranged so that they protrude with their section having the scraping edge from the scraper strip cartridge.
- At least one spring element arranged in the scraper blade cassette is preferably assigned to each scraper blade segment, against which the respective scraper blade segment can be adjusted.
- the scraper blade cassette preferably forms a housing for the scraper blade segments that is open on the side facing the cover element.
- the scraper blade segments preferably each have an elongated guide slot running in the direction of displacement, positioning bushings being attached to the scraper blade cartridge, which pass through the guide slot and form a guide element for the displacement movement of the scraper blade segments.
- the positioning bushings preferably have a bore with an internal thread for a fastening screw, with which a plate-like cover element of the scraper blade cassette is fastened.
- a plow blade of a snow plow In 1 denoted by 1 is a plow blade of a snow plow.
- the plow blade 1 carries on its lower side facing the road surface a scraper blade arrangement 2, which comprises a plurality of scraper blade cassettes 4 adjoining one another in the longitudinal direction, of which in 1 only one is shown.
- the scraper blade cassette 4 comprises a plurality of scraper blade segments 5 which are guided in the direction of the double arrow 6 so that they can be displaced independently of one another.
- the scraper blade arrangement 2 is fastened to a scraper blade support 7 which is L-shaped in cross-section.
- the scraper blade assembly 2 includes a slide plate 3 which is located in a mounting portion 9 between the scraper blade segment 5 and a leg of the scraper blade support 7 .
- the skid plate 3 is attached to the scraper support 7 in the attachment portion 9 by means of bolts 10, the head of the bolts 10 being countersunk in the rigid skid plate 3 to allow the adjustable scraper segments 5 to slide along a planar surface on the skid plate 3.
- the sliding surface of the sliding plate 3 is in 2 example shown by a slide pad 11 is formed.
- the adjustable scraper segments 5 are held in the scraper cartridge 4, with the help of positioning bushings 12 and 13, for example by means of a Welded connection are attached to the slide plate 3 and have an internal thread into which fastening screws 16 are screwed in order to attach a plate-like cover element 8 of the scraper blade cassette 4 to form a housing on the slide plate 3.
- the scraper strip segment 5 has a guide slot 15 ( 3 ) in which the positioning bushings 12 and 13 are arranged.
- Coil springs 14 act on the scraper blade segments 5, as is better shown in 3 is evident.
- two adjacent scraper rail segments 5 each have laterally interacting form-fitting elements, namely a pin 18 and a groove 19, in which the pin 18 engages.
- the height of the groove 19 in the direction of the displacement movement 6 limits the stroke of a scraper segment 5 relative to the adjacent scraper segment 5.
- the scraper assembly has the following characteristics. Basically, the system consists of two assemblies, the sliding plate and the scraper blade cassette with the scraper blade segments.
- the sliding plate serves as a connection to the shield. It is bolted to the shield body together with the existing rigid scraper bar. It should be noted that the existing holes must be countersunk to ensure a level sliding surface for the scraper segments.
- the advantage of this sliding plate lies in its independence from the hole patterns of different plow types. It is the existing hole pattern of the plow to be mounted onto the sliding plate and the pre-assembled scraper blade cassette with the vertically movable, spring-loaded scraper blade segments is mounted on it.
- the permanently welded threaded bushes are located on the sliding plate. Together with the hardened drill bushings (wear-resistant) mounted on them, they serve as a guide for the spring-loaded scraper blade segments.
- the cover element is positioned and screwed with it. This guarantees stable lateral guidance of the vertically movable scraper blade segments.
- the base body also has a sliding surface on which the movable scraper segments slide and are supported.
- the spring holders with the preloaded springs are also pre-assembled on the base body, which enable the wearing elements to be changed particularly easily.
- the pre-assembled base body is screwed to the scraper blade mount of the shield body during assembly.
- the scraper rail segments are then inserted individually. This has the great advantage that the assembly and replacement of worn scraper segments can be carried out quickly without heavy lifting.
- the pre-assembled cover unit is then positioned and screwed onto the system using the threaded bushings.
- the cover unit consists of a cover plate, a welded-on slide plate with cutouts to absorb dirt and minimize friction, and a seal that protects the system from contamination from above.
- the solution using your own cover unit has the advantage of simple assembly.
- the spring preload force of the individual scraper segments is dimensioned in such a way that they are fully retracted when used on level roads, so the plow rests on both the scraper segments.
- the individual scraper segments adapt optimally to the given surface due to the spring preload force.
- a further advantage of the scraper arrangement according to the invention is that the snow can also be pulled out of driveways or cul-de-sacs, i.e. in the opposite clearing direction.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
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Abstract
Bei einer Schürfleistenanordnung zur Befestigung an einem Pflugschild, wobei die Schürfleistenanordnung (2) verstellbare Schürfleistensegmente (5) umfasst, umfassen die verstellbaren Schürfleistensegmente (5) wenigstens zwei Gruppen von verstellbaren Schürfleistensegmenten (5), wobei die verstellbaren Schürfleistensegmente (5) einer Gruppe jeweils in einer Schürfleistenkassette (4) angeordnet sind, in der die Schürfleistensegmente (5) in einer quer zu einer Schürfkante (17) der Schürfleistensegmente (5) verlaufenden Richtung gegen eine Federkraft verstellbar geführt sind, wobei die Schürfleistensegmente (5) in der jeweiligen Schürfleistenkassette (4) unabhängig voneinander zwischen einer eingefahrenen und einer ausgefahrenen Position verschiebbar sind. Die Schürleistenkassette umfasst eine Gleitplatte (3) an der die Schürfleistensegmente (5) bei der Verschiebebewegung gleiten.In a scraper arrangement for attachment to a plow blade, the scraper arrangement (2) comprising adjustable scraper segments (5), the adjustable scraper segments (5) comprise at least two groups of adjustable scraper segments (5), the adjustable scraper segments (5) of a group each being in are arranged in a scraper blade cassette (4), in which the scraper blade segments (5) are guided in an adjustable manner against a spring force in a direction running transversely to a scraper edge (17) of the scraper blade segments (5), the scraper blade segments (5) being held in the respective scraper blade cartridge (4 ) are independently slidable between a retracted and an extended position. The scraper blade cassette includes a sliding plate (3) on which the scraper blade segments (5) slide during the displacement movement.
Description
Die Erfindung betrifft eine Schürfleistenanordnung zur Befestigung an einem Pflugschild, wobei die Schürfleistenanordnung verstellbare Schürfleistensegmente umfasst.The invention relates to a scraper assembly for attachment to a plow blade, the scraper assembly comprising adjustable scraper segments.
Die Erfindung betrifft weiters eine Schürfleistenkassette für die Verwendung in einer erfindungsgemäßen Schürfleistenanordnung.The invention further relates to a scraper cartridge for use in a scraper assembly according to the invention.
Es ist bereits bekannt, im unteren Endbereich eines Pflugs, insbesondere eines Schneepflugs, eine oder mehrere auswechselbare Schürfleisten anzubringen, damit der durch die Reibung verursachte Verschleiß sich nicht auf das Pflugschild selbst, sondern auf ein separates, auswechselbares Bauteil auswirkt. Die Schürfleiste kann beispielsweise aus Stahl hergestellt sein. Bei einer Schürfleiste handelt es sich typischerweise um ein plattenförmiges Element, das sich im Wesentlichen über die gesamte Länge des Pflugschilds erstreckt.It is already known to attach one or more replaceable scraper strips in the lower end area of a plough, in particular a snow plough, so that the wear caused by friction does not affect the plow blade itself, but rather a separate, replaceable component. The scraper bar can be made of steel, for example. A scraper is typically a plate-like member that extends substantially the full length of the plow blade.
Da eine starre Schürfleiste sich nicht an Bodenunebenheiten anpassen kann, sind bereits Schürfleistenanordnungen bekannt geworden, die in Höhenrichtung verstellbare Schürfleistensegmente umfassen. Derartige Ausbildungen sind beispielswiese in der
Bodenunebenheiten sind auf verschiedene Ursachen zurückzuführen. Durch den Schwerverkehr kommt es in vielen Bereichen zu erheblichen Spurrillen im Straßenbelag. In Gemeindegebieten sind die Straßen meist bombiert gestaltet, damit das Oberflächenwasser seitlich abgeleitet werden kann. In abgelegenen Ortsteilen haben die Straßen oft einen schlechten Zustand und weisen Schlaglöcher und dgl. auf.Uneven floors can be attributed to various causes. The heavy traffic causes significant ruts in the road surface in many areas. In municipal areas, the streets are usually cambered so that surface water can be drained off to the side can. In remote districts, the roads are often in poor condition and have potholes and the like.
Beim Räumen von Schnee verursacht eine unebene Fahrbahn große Probleme. Je mehr Restschnee bei der mechanischen Räumung mit dem Schneepflug auf der Fahrbahnoberfläche haften bleiben, desto mehr Streusalz muss aufgewendet werden, um die Straße wieder schneefrei zu bekommen. Die Verwendung von Streusalz hat den Nachteil, dass das Entfernen des Schnees auf Grund der physikalischen und chemischen Reaktionen längere Zeit in Anspruch nimmt. Außerdem verursacht Streusalz hohe Kosten, wenn man berücksichtigt, dass eine Kleinstadt durchschnittlich ca. 20-25 Tonnen Streusalz pro Schneetag verbraucht. Schließlich belastet Streusalz die Umwelt.When clearing snow, an uneven roadway causes major problems. The more residual snow sticks to the road surface during mechanical clearing with the snow plow, the more road salt has to be used to clear the road of snow again. The disadvantage of using road salt is that it takes a long time to remove the snow due to the physical and chemical reactions. In addition, de-icing salt is very expensive, considering that a small town uses an average of 20-25 tons of de-icing salt per day of snow. After all, road salt pollutes the environment.
Eine verbesserte mechanische Räumung durch eine bessere Anpassungsfähigkeit der Schneepflüge an die Straßenoberfläche würde dazu führen, dass der Winterdienst rascher und kostengünstiger vonstatten geht. Allerdings hat ein Pflug mit 3 m Breite, der stabilitätsbedingt aus zwei oder drei starren Elementen besteht, die sich relativ zueinander ein wenig bewegen können, eine relativ schlechte Anpassungsfähigkeit an punktuelle Rillen oder Löcher.Improved mechanical clearing through better adaptability of snow plows to the road surface would result in winter service being carried out more quickly and cost-effectively. However, a plow with a width of 3 m, which for stability reasons consists of two or three rigid elements that can move a little relative to each other, has relatively poor adaptability to punctiform grooves or holes.
Die vorliegende Erfindung zielt daher darauf ab, eine Schürfleistenanordnung dahingehend weiterzuentwickeln, dass die Anpassungsfähigkeit erhöht und das Räumergebnis bei unebener Straßenoberfläche verbessert wird. Die vorliegende Erfindung zielt weiters darauf ab, die Auswechselbarkeit der Schürfleisten zu erleichtern und die Stabilität von verstellbaren Schürfleistenelementen zu erhöhen.The present invention therefore aims to further develop a scraper blade arrangement in such a way that the adaptability is increased and the clearing result on uneven road surfaces is improved. The present invention also aims to make it easier to replace the scraper rails and to increase the stability of adjustable scraper rail elements.
Zur Lösung dieser Aufgabe sieht die Erfindung bei einer Schürfleistenanordnung der eingangs genannten Art im Wesentlichen vor, dass die verstellbaren Schürfleistensegmente wenigstens zwei Gruppen von verstellbaren Schürfleistensegmenten umfassen, wobei die verstellbaren Schürfleistensegmente einer Gruppe jeweils in einer Schürfleistenkassette angeordnet sind, in der die Schürfleistensegmente in einer quer zu einer Schürfkante der Schürfleistensegmente verlaufenden Richtung gegen eine Federkraft verstellbar geführt sind, wobei die Schürfleistensegmente in der jeweiligen Schürfleistenkassette unabhängig voneinander zwischen einer eingefahrenen und einer ausgefahrenen Position verschiebbar sind, und dass die Schürfleistenkassette eine Gleitplatte aufweist, an der die Schürfleistensegmente bei der Verschiebebewegung gleiten.To solve this problem, the invention essentially provides for a scraper blade arrangement of the type mentioned at the outset that the adjustable scraper blade segments comprise at least two groups of adjustable scraper blade segments, with the adjustable scraper blade segments of one group each being arranged in a scraper blade cassette in which the scraper blade segments are arranged in a transverse to a scraping edge of the scraper blade segments are guided adjustable against a spring force, wherein the scraper blade segments in the respective scraper blade cartridge can be displaced independently of one another between a retracted and an extended position, and that the scraper blade cartridge has a sliding plate on which the scraper blade segments slide during the displacement movement.
Die erfindungsgemäße Schürfleistenanordnung besteht somit aus einer Kombination einer Gleitplatte mit einer Vielzahl von verstellbaren Schürfleistensegmenten. Dadurch, dass die Schürfleistensegmente unabhängig voneinander in Höhenrichtung, d.h. quer zur Schürfkante, verstellbar sind, können sich diese an Straßenunebenheiten anpassen, während gleichzeitig die starre Schürfkante im Kontakt mit der Straßenoberfläche bleibt. Im nach unten ausgefahrenen Zustand einzelner Schürfleistensegmente können diese den Schnee auch von tiefer gelegenen Straßenstellen, wie z.B. Rillen oder Löchern, abkratzen. Wenn unterhalb der Schürfkante der starren Schürfleiste hingegen kein Raum für ein Ausfahren der Schürfleistensegmente vorhanden ist, verbleiben diese auf Grund des Eigengewichts des Pflugschilds in der nach oben eingefahrenen Position.The scraper blade arrangement according to the invention thus consists of a combination of a sliding plate with a large number of adjustable scraper blade segments. Due to the fact that the scraper bar segments can be adjusted independently of one another in the height direction, ie transversely to the scraper edge, they can adapt to bumps in the road while at the same time the rigid scraper edge remains in contact with the road surface. When the individual scraper segments are extended downwards, they can also scrape the snow off lower-lying areas of the road, such as grooves or holes. If, on the other hand, there is no space below the scraping edge of the rigid scraper bar for extending the scraper bar segments, they remain in the upwardly retracted position due to the plow blade's own weight.
Ein weiteres erfindungsgemäßes Merkmal liegt in der Unterteilung der entlang der Längserstreckung der starren Schürfleiste angeordneten Schürfleistensegmente in wenigstens zwei, bevorzugt, wenigstens drei Gruppen von Schürfleistensegmenten. Die verstellbaren Schürfleistensegmente einer Gruppe sind hierbei jeweils in einer Schürfleistenkassette zusammengefasst, in der die Schürfleistensegmente in einer quer zu einer Schürfkante der Schürfleistensegmente verlaufenden Richtung verstellbar geführt sind. Die Anordnung einer Mehrzahl von Schürfleistensegmenten in einer Schürfleistenkassette ermöglicht die gemeinsame Montage und Demontage der Schürfleistensegmente, sodass die Stillstandzeiten minimiert werden. Die Schürfleistenkassette wird hierbei als Verschleißteil betrachtet, das bei Bedarf in einfacher Weise ausgetauscht wird.A further feature according to the invention lies in the subdivision of the scraper segments arranged along the longitudinal extent of the rigid scraper into at least two, preferably at least three groups of scraper segments. The adjustable scraper blade segments of a group are each combined in a scraper blade cartridge in which the scraper blade segments are adjustably guided in a direction running transversely to a scraper edge of the scraper blade segments. The arrangement of a plurality of scraper segments in a scraper cartridge enables the joint assembly and disassembly of the scraper segments, so that downtimes are minimized. Here, the scraper blade cassette is regarded as a wearing part that can be easily replaced if necessary.
Gemäß einer bevorzugten Weiterbildung der Erfindung sind die Schürfleistensegmente parallel zu der Gleitplatte an dieser gleitend verschiebbar. Auf diese Weise können sich die Schürfleistensegmente an der Gleitplatte abstützen, sodass die beim Straßenkontakt auftretenden Schürfkräfte nicht nur von den einzelnen Schürfleistensegmenten, sondern auch von der dahinter liegenden Gleitplatte aufgenommen werden. Dabei sind die Schürfleistensegmente als flache plattenartige Elemente ausgebildet, deren Plattenebene parallel zur Ebene der starren Gleitplatte verläuft.According to a preferred development of the invention, the scraper rail segments can be slid parallel to the sliding plate on the latter. In this way, the scraper segments can be supported on the sliding plate, so that the scraping forces that occur when they come into contact with the road are not only absorbed by the individual scraper segments, but also by the sliding plate behind them. The scraper ledge segments are designed as flat, plate-like elements, the plate plane of which runs parallel to the plane of the rigid slide plate.
Das Merkmal, wonach die Schürfleistensegmente bei der Verschiebebewegung an der starren Gleitplatte gleiten, bedeutet nicht, dass die Schürfleistensegmente und die starre Gleitplatte einander direkt berühren müssen. Das Gleiten kann auch unter Vermittlung einer Zwischenschicht oder eines Zwischenelements erfolgen, welche(s) bevorzugt reibungsoptimierte Eigenschaften aufweist.The feature that the scraper segments slide on the rigid skid plate during translational movement does not mean that the scraper segments and the rigid skid plate must be in direct contact. Gliding can also be mediated by an intermediate layer or an intermediate element which preferably has friction-optimized properties.
Zur Befestigung der Schürfleistenkassette an dem Pflugschild oder an dessen Schürfleistenträger ist bevorzugt vorgesehen, dass die Gleitplatte einen Befestigungsabschnitt aufweist, der an einem Schürfleistenträger befestigt ist. Die Schürfleistenkassette kann hierbei als Standardbauteil ausgeführt werden, während eine ggf. erforderliche Anpassung an unterschiedliche Montagesituationen, z.B. unterschiedliche Lochmuster des Pflugschilds oder des Schürfleistenträgers, mittels einer entsprechend angepassten Ausbildung der Gleitplatte erfolgen kann.In order to fasten the scraper blade cassette to the plow blade or to its scraper blade carrier, it is preferably provided that the sliding plate has a fastening section which is fastened to a scraper blade carrier. The scraper blade cassette can be designed as a standard component, while any necessary adaptation to different assembly situations, e.g. different hole patterns of the plow blade or the scraper blade carrier, can be made by means of a correspondingly adapted design of the sliding plate.
Um eine gemeinsame Befestigung der starren Schürfleiste und der Gleitplatte an dem Pflugschild oder an dessen Schürfleistenträger zu erlauben, sieht eine bevorzugte Ausbildung vor, dass der Befestigungsabschnitt der Gleitplatte mit Hilfe von Befestigungselementen, insbesondere Schraubbolzen, welche in dem Befestigungsabschnitt ausgebildete Bohrungen durchsetzen, an dem Schürfleistenträger befestigt ist. Um eine ebene Gleitfläche für die Schürfleistensegmente an der Gleitplatte zu gewährleisten, ist es hierbei vorteilhaft, wenn die Bohrungen als Senkbohrungen ausgeführt sind, was eine versenkte Anordnung des Kopfes der Befestigungselemente bzw. Schraubbolzen ermöglicht.In order to allow the rigid scraper bar and the sliding plate to be attached to the plow blade or to its scraper bar carrier, a preferred embodiment provides that the fastening section of the sliding plate is fastened to the scraper bar carrier with the aid of fastening elements, in particular bolts, which pass through bores formed in the fastening section is attached. In order to ensure a flat sliding surface for the scraper segments on the sliding plate, it is advantageous here if the bores are designed as countersunk bores, which allows a countersunk arrangement of the head of the fastening elements or screw bolts.
Eine besonders einfache Bauweise mit einer minimalen Anzahl an Bauteilen ist gemäß einer bevorzugen Ausbildung vorgesehen, wenn die Schürfleistenkassette ein an der dem Deckelelement zugewandten Seite offenes Gehäuse für die Schürfleistensegmente umfasst. Das offene Gehäuse wird hierbei durch das Deckelelement verschlossen, sobald das Gehäuse an dem Schürfleistenträger befestigt wird.A particularly simple construction with a minimum number of components is provided according to a preferred embodiment, if the scraper blade cassette has a housing for the open element on the side facing the cover element Includes scraper segments. In this case, the open housing is closed by the cover element as soon as the housing is attached to the scraper rail support.
Für eine konstruktiv einfache Befestigung und Führung der Schürfleistensegmente in der Schürfleistenkassette ist bevorzugt vorgesehen, dass die Schürfleistensegmente jeweils einen länglichen, in Verschieberichtung verlaufenden Führungsschlitz aufweisen und dass an der Gleitplatte Positionierungsbuchsen befestigt sind, welche den Führungsschlitz durchsetzen und ein Führungselement für die Verschiebebewegung der Schürfleistensegmente ausbilden.For a structurally simple attachment and guidance of the scraper segments in the scraper cassette, it is preferably provided that the scraper segments each have an elongated guide slot running in the direction of displacement and that positioning bushings are fastened to the sliding plate, which pass through the guide slot and form a guide element for the displacement movement of the scraper segments .
Mit Vorteil weisen die Positionierungsbuchsen hierbei jeweils eine Bohrung mit einem Innengewinde für eine Befestigungsschraube auf, mit welcher ein plattenartiges Deckelelement der Schürfleistenkassette befestigt ist.Advantageously, the positioning bushings each have a bore with an internal thread for a fastening screw, with which a plate-like cover element of the scraper blade cassette is fastened.
Wie bereits erwähnt sind die Schürfleistensegmente gegen eine Federkraft verschiebbar angeordnet. Für die Bereitstellung einer Federkraft ist bevorzugt ein gesondertes Federelement vorgesehen, welches im Inneren der Schürfleistenkassette angeordnet ist, um eine geschützte Anordnung des Federelements zu gewährleisten. In diesem Zusammenhang ist bevorzugt vorgesehen, dass jedem Schürfleistensegment wenigstens ein in der Schürfleistenkassette angeordnetes Federelement, insbesondere eine Schraubenfeder, zugeordnet ist, gegen welche(s) das jeweilige Schürfleistensegment verstellbar ist.As already mentioned, the scraper blade segments are arranged so that they can be displaced against a spring force. To provide a spring force, a separate spring element is preferably provided, which is arranged inside the scraper blade cassette in order to ensure a protected arrangement of the spring element. In this context, it is preferably provided that each scraper blade segment is assigned at least one spring element arranged in the scraper blade cartridge, in particular a helical spring, against which the respective scraper blade segment can be adjusted.
Um zu verhindern, dass einzelne Schürfleistensegmente beim Eintritt in ein kleines Loch in der Fahrbahn hängenbleiben und dadurch beschädigt werden oder umgekehrt die Fahrbahn durch Ausreißen des Asphalts beschädigen, ist bevorzugt vorgesehen, dass zwei benachbarte Schürfleistensegmente seitlich jeweils miteinander zusammenwirkende Formschlusselemente aufweisen, welche die relative Verschiebebewegung der Schürfleistensegmente begrenzen. Damit wird der maximale Hub jedes Schürfleistensegments relativ zu seinem benachbarten Schürfleistensegment begrenzt. Wenn der durch die Begrenzung maximal zulässige Hub relativ zum benachbarten Schürfleistensegment deutlich kleiner ist als der ohne Begrenzung mögliche Hub, z.B. weniger als die Hälfte des sonst möglichen Hubs beträgt, führt dies dazu, dass ein Schürfleistensegment nicht einzeln vollständig ausfahren kann, sondern immer nur im Verlauf mit den benachbarten Schürfleistensegmenten.To prevent individual scraper segments from getting stuck when entering a small hole in the roadway and are thereby damaged or, conversely, damage the roadway by tearing out the asphalt, it is preferably provided that two adjacent scraper segments have form-fitting elements that interact with one another laterally and limit the relative displacement movement of the scraper segments. This limits the maximum travel of each scraper segment relative to its adjacent scraper segment. If the maximum permissible stroke relative to the adjacent scraper segment is significantly smaller than the stroke that is possible without limitation, e.g. less than half the otherwise possible stroke, this means that a scraper segment cannot be fully extended individually, but only in the Course with the neighboring scraper segments.
Bevorzugt ist hierbei vorgesehen, dass die miteinander zusammenwirkenden Formschlusselemente von einem seitlich vorstehenden Zapfen des einen Schürfleistensegments und von einer seitlichen Nut des anderen Schürfleistensegments gebildet werden, in welche der Zapfen eingreift.It is preferably provided here that the form-fitting elements interacting with one another are formed by a laterally projecting pin of one scraper blade segment and by a lateral groove of the other scraper blade segment, into which the pin engages.
In unabhängiger Aspekt der Erfindung betrifft eine Schürfleistenkassette zur Verwendung in einer erfindungsgemäßen Schürfleistenanordnung, umfassend eine Mehrzahl von Schürfleistensegmenten, die in der Schürfleistenkassette in einer quer zu einer Schürfkante der Schürfleistensegmente verlaufenden Richtung gegen eine Federkraft verstellbar geführt sind, wobei die Schürfleistensegmente in der Schürfleistenkassette unabhängig voneinander zwischen einer eingefahrenen und einer ausgefahrenen Position verschiebbar sind. Die Schürfleistensegmente sind hierbei so angeordnet, dass sie mit ihrem die Schürfkante aufweisenden Abschnitt aus der Schürfleistenkassette hervorragen.An independent aspect of the invention relates to a scraper blade cartridge for use in a scraper blade arrangement according to the invention, comprising a plurality of scraper blade segments, which are adjustably guided in the scraper blade cartridge against a spring force in a direction running transversely to a scraper edge of the scraper blade segments, the scraper blade segments in the scraper blade cartridge being independent of one another are displaceable between a retracted and an extended position. The scraper segments are here arranged so that they protrude with their section having the scraping edge from the scraper strip cartridge.
Bevorzugt ist jedem Schürfleistensegment wenigstens ein in der Schürfleistenkassette angeordnetes Federelement, insbesondere eine Schraubenfeder, zugeordnet, gegen welche(s) das jeweilige Schürfleistensegment verstellbar ist.At least one spring element arranged in the scraper blade cassette, in particular a helical spring, is preferably assigned to each scraper blade segment, against which the respective scraper blade segment can be adjusted.
Bevorzugt bildet die Schürfleistenkassette ein an der der Deckelelement zugewandten Seite offenes Gehäuse für die Schürfleistensegmente.The scraper blade cassette preferably forms a housing for the scraper blade segments that is open on the side facing the cover element.
Wie bereits im Zusammenhang mit der erfindungsgemäßen Schürfleistenanordnung beschrieben, weisen die Schürfleistensegmente bevorzugt jeweils einen länglichen, in Verschieberichtung verlaufenden Führungsschlitz auf, wobei an der Schürfleistenkassette Positionierungsbuchsen befestigt sind, welche den Führungsschlitz durchsetzen und ein Führungselement für die Verschiebebewegung der Schürfleistensegmente ausbilden.As already described in connection with the scraper blade arrangement according to the invention, the scraper blade segments preferably each have an elongated guide slot running in the direction of displacement, positioning bushings being attached to the scraper blade cartridge, which pass through the guide slot and form a guide element for the displacement movement of the scraper blade segments.
Die Positionierungsbuchsen weisen bevorzugt eine Bohrung mit einem Innengewinde für eine Befestigungsschraube auf, mit welcher ein plattenartiges Deckelelement der Schürfleistenkassette befestigt ist.The positioning bushings preferably have a bore with an internal thread for a fastening screw, with which a plate-like cover element of the scraper blade cassette is fastened.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. In dieser zeigen
In
In der Querschnittsansicht gemäß
Die verstellbaren Schürfleistensegmente 5 sind in der Schürfleistenkassette 4 gehalten, und zwar mit Hilfe von Positionierungsbuchsen 12 und 13, die z.B. mittels einer Schweißverbindung an der Gleitplatte 3 befestigt sind und ein Innengewinde aufweisen, in welches Befestigungsschrauben 16 eingeschraubt sind, um ein plattenartiges Deckelelement 8 der Schürfleistenkassette 4 zur Ausbildung eines Gehäuses an der Gleitplatte 3 zu befestigen. Für die Führung der Verschiebebewegung gemäß dem Doppelpfeil 6 weist das Schürfleistensegment 5 einen Führungsschlitz 15 (
In
Zusammenfassend hat die Schürfleistenanordnung die folgenden Eigenschaften. Grundlegend besteht das System aus zwei Baugruppen, der Gleitplatte und der Schürfleistenkassette mit den Schürfleistensegmenten. Die Gleitplatte dient als Verbindung zum Schild. Sie wird zusammen mit der bestehenden starren Schürfleiste an den Schildkörper verschraubt. Dabei ist zu beachten, dass die bestehenden Bohrungen gesenkt werden müssen, um eine ebene Gleitfläche für die Schürfleistensegmente zu gewährleisten. Der Vorteil dieser Gleitplatte liegt in der Unabhängigkeit von den Lochbildern verschiedener Pflugtypen. Es wird das jeweils vorliegende Lochbild des zu montierenden Pfluges auf die Gleitplatte übernommen und darauf die vormontierte Schürfleistenkassette mit den vertikal beweglichen, federvorgespannten Schürfleistensegmenten montiert.In summary, the scraper assembly has the following characteristics. Basically, the system consists of two assemblies, the sliding plate and the scraper blade cassette with the scraper blade segments. The sliding plate serves as a connection to the shield. It is bolted to the shield body together with the existing rigid scraper bar. It should be noted that the existing holes must be countersunk to ensure a level sliding surface for the scraper segments. The advantage of this sliding plate lies in its independence from the hole patterns of different plow types. It is the existing hole pattern of the plow to be mounted onto the sliding plate and the pre-assembled scraper blade cassette with the vertically movable, spring-loaded scraper blade segments is mounted on it.
Auf der Gleitplatte befinden sich die fix verschweißten Gewindebuchsen. Zusammen mit den darauf gelagerten gehärteten Bohrbuchsen (verschleißfest) dienen sie als Führung der federvorgespannten Schürfleistensegmente. Zudem wird das Deckelelement damit positioniert und verschraubt. Dies garantiert eine stabile seitliche Führung der vertikal beweglichen Schürfleistensegmente. Der Grundkörper besitzt zudem eine Gleitfläche, auf der die beweglichen Schürfleistensegmente gleiten und abgestützt werden.The permanently welded threaded bushes are located on the sliding plate. Together with the hardened drill bushings (wear-resistant) mounted on them, they serve as a guide for the spring-loaded scraper blade segments. In addition, the cover element is positioned and screwed with it. This guarantees stable lateral guidance of the vertically movable scraper blade segments. The base body also has a sliding surface on which the movable scraper segments slide and are supported.
Am Grundkörper vormontiert befinden sich ebenfalls die Federhalter mit den vorgespannten Federn, welche ein besonders einfaches Wechseln der Verschleißelemente ermöglichen. Der fertig vormontierte Grundkörper wird bei der Montage mit der Schürfleistenaufnahme des Schildkörpers verschraubt. Anschließend werden die Schürfleistensegmente einzeln eingelegt. Dies hat den großen Vorteil, dass die Montage sowie das Austauschen verschlissener Schürfleistensegmente ohne schweres Heben rasch erfolgen kann. In weiterer Folge wird nun die vormontierte Deckeleinheit mithilfe der Gewindebuchsen auf dem System positioniert und verschraubt. Die Deckeleinheit besteht aus einem Deckelblech, einem aufgeschweißten Gleitblech mit Freischnitten zur Schmutzaufnahme und Reibungsminimierung sowie einer Dichtung, die das System vor Verschmutzungen von oben schützt. Die Lösung mittels der eigenen Deckeleinheit bringt den Vorteil der einfachen Montage. Dadurch können die Schürfleistensegmente bei Erreichen der Verschleißgrenze einfach durch Abschrauben des Deckels gewechselt werden. Die Federn bleiben durch den Federhalter vorgespannt in Position und die einzelnen Schürfleistensegmente können nach der Reihe direkt am Pflug, ohne schweres Heben des Monteurs getauscht werden. In diesem Schritt können zudem eventuelle Verunreinigungen einfach beseitigt werden.The spring holders with the preloaded springs are also pre-assembled on the base body, which enable the wearing elements to be changed particularly easily. The pre-assembled base body is screwed to the scraper blade mount of the shield body during assembly. The scraper rail segments are then inserted individually. This has the great advantage that the assembly and replacement of worn scraper segments can be carried out quickly without heavy lifting. The pre-assembled cover unit is then positioned and screwed onto the system using the threaded bushings. The cover unit consists of a cover plate, a welded-on slide plate with cutouts to absorb dirt and minimize friction, and a seal that protects the system from contamination from above. The solution using your own cover unit has the advantage of simple assembly. This means that when the wear limit is reached, the scraper segments can be removed simply by unscrewing the cover change. The springs remain pretensioned in position by the spring retainer and the individual scraper bar segments can be exchanged one after the other directly on the plow without the fitter having to lift heavily. In this step, any contamination can also be easily removed.
Die Funktionsweise ist wie folgt. Die Federvorspannkraft der einzelnen Schürfleistensegmente ist so dimensioniert, dass sie im Einsatz auf ebenen Straßen vollständig eingefahren sind, der Pflug also sowohl auf den Schürfleistensegmenten aufliegt. Auf Straßen mit Spurrillen passen sich nun die einzelnen Schürfleistensegmente durch die Federvorspannkraft optimal an die gegebene Oberfläche an. Durch die Verwendung dieses Systems erhält der Anwender somit ein optimales Räumergebnis durch die mechanische Räumung und kann dadurch in weiterer Folge den Verbrauch von Streusalz und die damit verbundenen Kosten deutlich reduzieren.How it works is as follows. The spring preload force of the individual scraper segments is dimensioned in such a way that they are fully retracted when used on level roads, so the plow rests on both the scraper segments. On roads with ruts, the individual scraper segments adapt optimally to the given surface due to the spring preload force. By using this system, the user receives an optimal clearing result through mechanical clearing and can thus significantly reduce the consumption of road salt and the associated costs.
Ein weiterer Vorteil der erfindungsgemäßen Schürfleistenanordnung liegt darin, dass der Schnee aus Einfahrten oder Sackgassen auch herausgezogen werden kann, d.h. in der entgegengesetzten Räumrichtung.A further advantage of the scraper arrangement according to the invention is that the snow can also be pulled out of driveways or cul-de-sacs, i.e. in the opposite clearing direction.
Claims (16)
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ATA7/2021A AT523738B8 (en) | 2021-01-12 | 2021-01-12 | Scraper assembly and scraper cartridge |
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EP4026949A1 true EP4026949A1 (en) | 2022-07-13 |
EP4026949B1 EP4026949B1 (en) | 2023-11-15 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5743032A (en) | 1993-01-22 | 1998-04-28 | Vauhkonen; Pertti | Plough blade arrangement |
WO2011123956A1 (en) * | 2010-04-06 | 2011-10-13 | Jimmy Vigneault | Scraper blade device for cleaning a surface and method |
WO2016058106A1 (en) * | 2014-10-17 | 2016-04-21 | Jimmy Vigneault | Scraper blade device with juxtaposed blade segments having a swivel interconnection between mating edges |
-
2021
- 2021-01-12 AT ATA7/2021A patent/AT523738B8/en active
-
2022
- 2022-01-11 EP EP22020005.9A patent/EP4026949B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5743032A (en) | 1993-01-22 | 1998-04-28 | Vauhkonen; Pertti | Plough blade arrangement |
WO2011123956A1 (en) * | 2010-04-06 | 2011-10-13 | Jimmy Vigneault | Scraper blade device for cleaning a surface and method |
WO2016058106A1 (en) * | 2014-10-17 | 2016-04-21 | Jimmy Vigneault | Scraper blade device with juxtaposed blade segments having a swivel interconnection between mating edges |
Also Published As
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EP4026949B1 (en) | 2023-11-15 |
EP4026949C0 (en) | 2023-11-15 |
AT523738B8 (en) | 2022-02-15 |
AT523738B1 (en) | 2021-11-15 |
AT523738A4 (en) | 2021-11-15 |
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