EP3546653B1 - Schneeräumschaufel mit variabler arbeitshöhe - Google Patents

Schneeräumschaufel mit variabler arbeitshöhe Download PDF

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Publication number
EP3546653B1
EP3546653B1 EP19164956.5A EP19164956A EP3546653B1 EP 3546653 B1 EP3546653 B1 EP 3546653B1 EP 19164956 A EP19164956 A EP 19164956A EP 3546653 B1 EP3546653 B1 EP 3546653B1
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EP
European Patent Office
Prior art keywords
blade
snow
segments
curvature
radius
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Application number
EP19164956.5A
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English (en)
French (fr)
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EP3546653A1 (de
Inventor
Guy Lafon
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Euro Investissement SAS
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Euro Investissement SAS
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Classifications

    • 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
    • E01H5/065—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 characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories

Definitions

  • the present invention relates to a snow plow with variable working height.
  • snow plow is meant a part of elongated shape, generally rectangular, flattened and with a concave face. This snow plow is placed at the front of a vehicle or, alternatively, towed by a vehicle. Such a blade makes it possible, when the vehicle is moving, to push the snow present on the traffic lane on at least one side of the lane. Such a blade is generally mounted on a device making it possible to position it as close as possible to the traffic lane, so as to ensure maximum snow removal to bring the traffic lane as dark as possible.
  • US 4 254 564 A discloses a blade according to the preamble of claim 1.
  • the snow plow blade initially mounted on the vehicle may turn out, at least temporarily, to be unsuitable.
  • the angle of attack of the blade is defined here as being the angle formed between the direction of movement of the vehicle and the main plane of the blade.
  • such blades have a fixed width.
  • the width of the blade corresponds to the working height of the blade, that is to say a width of the blade in relation to the maximum height of snow that will be pushed by the blade. If the snow depth is greater than the working height of the blade, the snow passes over the blade and is not pushed to the sides of the traffic lane but falls onto the lane.
  • one side of the blade designated as the upper edge, and which corresponds to the side of the blade furthest from the traffic lane, is concave along the largest dimension of the blade. The opening of the concavity is oriented in the direction of the snow to be evacuated.
  • the upper edge picks up the snow, like a spoon, and brings it back to the front and the bottom of the blade.
  • the snow is oriented towards the blade and the release of the snow from being pushed by the blade is optimized as much as possible.
  • the concave upper edge due to its curvature, behaves like a hook in the snow and hinders the advance of the blade. snow clearing vehicle.
  • WO-A-9429529 a two-part snow plow in the vertical direction. The upper part is articulated with respect to the lower part.
  • US-A-1926011 describes a snow plow with a fixed upright and two parts, upper and lower, movable on this upright so as to vary the radius of curvature of the blade.
  • WO-A-2006/040397 also discloses a snow plow with a movable upper part so as to vary the radius of curvature of the blade. Such blades nevertheless offer limited possibilities for varying the curvature.
  • the invention more particularly intends to remedy by proposing a snow plow that can be used regardless of the depth of snow on the traffic lane to be cleared.
  • the invention relates to a snow plow comprising a face adapted to be in contact with the snow to be evacuated from a traffic lane, said face comprising at least one concave part along the largest dimension of the blade, also called the width of the blade, the opening of the concave part being oriented towards the snow to be evacuated from the snow-covered traffic lane when the snow plow is in configuration of use, characterized in that the blade comprises a planar main body and, in the upper part of the body, a concave part equipped with a means for varying the radius of curvature of the concavity of the part and in that said means of variation of the radius of curvature of the concavity comprises at least two articulated segments.
  • the figure 1 illustrates a snow plow 1 according to one embodiment of the invention.
  • the blade 1 comprises a rectangular and flat main body 2, at least on one face 3 called the front face and intended to be in contact with the snow when the blade 1 is used to clear snow from a traffic lane, not shown.
  • the body 2 is, in the example, made of a metallic material. He understands, in the lower part looking at the figure 1 , a first part 4, rectilinear, intended to be as close as possible to the traffic lane when the blade 1 is used for clearing snow.
  • part 4 also referred to hereinafter as being the lower edge of blade 1, is made of a material suitable for not damaging the traffic path when blade 1 is resting thereon.
  • part 4 is made of polymers, for example of rubber or polyurethane. Such a part 4 can be mounted removably, in order to allow its change in the event of wear.
  • the rear face 5 of the main body 2, opposite the face 3, is provided with fixing means 6, known per se, of the blade 1 to a vehicle.
  • the blade 1 is intended to be fixed to the front of a vehicle, not shown.
  • the blade 1 is a push type blade.
  • Control means 60 of the blade also equip the face 5 of the body 2.
  • the means 60 are positioned between the blade 1 itself and the fixing means 6 to a vehicle. They make it possible to raise, lower and angularly orient the blade 1 with respect to the ground and to the direction of movement of the vehicle which carries the blade 1.
  • the control means 60 are managed from the cabin of the vehicle by the driver.
  • This part 7 is concave, over the entire length L of the blade 1.
  • the concavity C therefore the access opening to the open rounded volume is oriented towards the face 3, therefore towards the front of the blade 1 and, de facto, towards the snow when the blade 1 is used to clear snow from a traffic lane.
  • Part 7, also designated hereinafter as being the upper edge of blade 1, is formed of at least two independent segments 8.
  • the blade 1 comprises, in the example, three identical segments 8.
  • the segments are not identical and / or their number is different.
  • the segments 8 are formed here by a metal structure 9 in the form of a rectangular grid on which are fixed plates 10 of polymers, for example plates 10 of HDPE (high density polyethylene) or PU (polyurethane).
  • the segments 8 are mono-material, it being understood that they can be made of polymers, metal or a composite material.
  • Each of the segments 8 is in one piece over the entire length L of the blade 1.
  • the curved upper part of the snow plow is formed of several rows of independent segments, each segment having a length less than half a length. of the snow plow.
  • the segments 8 are arranged parallel to each other and to the width L of the blade 1. More precisely, it is the edges 11 defining the length L8 of each segment 8 which are parallel.
  • the length L8 of each segment 8 corresponds to the largest dimension of the blade, usually referred to as being the width L of the blade 1.
  • the length L8 of each segment 8 is less than the width L of the blade 1.
  • the faces 12, oriented towards the rear of the blade 1, of the different segments 8 are not aligned in the same plane.
  • the faces 12, which participate in defining the rear face 5 of the blade 1, are arranged angularly with respect to each other, so as to define a portion of a circle situated in the extension of the body 2.
  • the body 2, the lower 4 and upper 7 parts define a profile hooked to the blade 1.
  • the segments 8 are therefore arranged so as to configure a rounded upper edge 7 of the blade, the curvature being defined by the circular arc arrangement of the segments 8.
  • the segments 8 define an open volume with a rounded bottom. , or chute, and the opening of which is oriented towards the front of the blade 1 defined by the face 3 of the blade 1.
  • the blade 1 is equipped with six members 13 for varying the radius of curvature R distributed regularly over the entire length L of the blade 1 and constituting a means for varying the radius of curvature.
  • the number and / or the distribution of the variation members 13 is adapted to the configuration of the blade 1 on which they are mounted.
  • the variation members 13 are particularly visible at the figure 2 .
  • These members 13 include links 100.
  • the links 100 have an elongated geometric shape, generally in an openwork rectangle. They are formed of two rectangular tabs 101.
  • the links 100 are connected to each other by shafts 110 defining axes of rotation.
  • the shafts 110 also participate in keeping the tabs 100 parallel.
  • each link 100 is movable in rotation around two shafts 110, located at the ends of the links 100, relative to the two links 100 to which it is connected.
  • the blade 1, visible in full at the figure 1 is equipped with six sets 111 of links 100. These sets 111 are distributed over the length L of the blade 1. Their numbers and / or their positions are adapted to the geometric and dimensional configuration of the snow plow blade. In particular, two sets 111 are provided in the central part of the blade 1, in the vicinity of the fixing zone 6 of the blade 1 on a vehicle.
  • the setting in motion of the sets 111 of links 100 is obtained by at least one set of links 120.
  • two sets of links 120 are provided. They are mounted on the sets 111 of links 100 located between the sets 111 in the central part and the sets 111 located as close as possible to the ends of the alem 1.
  • the rods 120 are mounted generally in the middle position on the half-length of the blade 1. It is understood that the position and / or the number of links 120 is adapted to the blade 1 in order to be able to perform a balanced, continuous movement and with a minimum of effort of the segments 8.
  • link rod must be understood in its general definition, namely a metal part which is articulated at its ends on two moving parts and which transmits, by modifying it or not, to one the movement of the other.
  • the rods 120 have, in the example, a T-shape. They are fixed by one end of a branch to a fixed point on the body 2 of the alem 1, by another branch end to an articulation plate 121 integral with a link 100 and by the third end, to the push rod 160 of a jack 161.
  • two jacks 161 arranged on either side of the fixing member 6 of the blade 1 on a vehicle ensure the maneuver.
  • the number and / or the position of the jacks 161 are different. Therefore, a translational movement along the double arrow F of the cylinder 161 generates a rotational movement along the double arrow F1 of the rod 120 and therefore induces a movement of the free end 70 of the upper part 7 of the blade 1. according to the double arrow F2.
  • This movement moves the links 100, by variation of the radius of curvature R of the concavity C.
  • the articulated part 7 of the snow plow is thus curved more or less, in an adjustable and continuous manner.
  • the figures 3 and 4 illustrate two positions close to the dead centers of the free end 70 of the curved part 7 of the blade 1.
  • the curvature is maximum, therefore the radius of curvatures R is minimal.
  • the stroke of the cylinder 161 is maximum, the rods 120 pushing back the links 100, therefore the segments 8, in the direction of the lower edge 4 of the blade 1.
  • the radius R is generally between 0.25 m and 0.35 m in this configuration.
  • the curvature C of the articulated part 7 of the blade 1 makes it possible to return the snow to the traffic lane and therefore to allow the blade 1 to push back the snow, this while maintaining a relatively fast forward speed of the vehicle, namely by general between 40 km / h and 55 km / h.
  • the figure 4 represents the blade 1 with the articulated part 7 at the minimum curvature, therefore with a maximum radius of curvature R, the jack 161 having a minimum stroke.
  • the segments 8 are moved away from the edge 4 of the blade 1.
  • the radius of curvature R is between 0.50 m and 0.60 m.
  • the blade 1 pushes back the snow when the latter is present on a traffic lane over a relatively large thickness, namely generally between 0.15 m and 0.70 m.
  • the forward speed of the vehicle is relatively low, given the large amount of snow to be evacuated.
  • the advance of the vehicle is typically between 10 km / h and 40 km / h.
  • the passage of the configuration of the figure 3 to that of figure 4 is carried out in a reversible and continuous manner.
  • all the radii R of curvature between the minimum and maximum radii are possible. It suffices for this to block the stroke of the jacks 161 at a given value. In another embodiment, only certain values of the radius of curvature are possible.
  • the stroke of the jacks 161 is carried out step by step. According to a preferred embodiment, the movement of the segments 8 in one direction or the other is carried out while keeping the gap between segments 8. In another embodiment, the difference is variable. In this case, when the radius R is minimum, the edges 11 of the segments 8 are further apart from each other than when the radius of curvature R is maximum. In order to prevent the passage of snow between the segments, flexible mud flaps are mounted on the edges 11 of the segments 8.
  • a snow plow according to the invention offers an adjustable working height according to needs, namely according to the depth of snow present on a traffic lane to be cleared.
  • the adjustment of the curvature C of the blade 1 is carried out by the driver of the vehicle, advantageously continuously while the vehicle is moving. The driver can therefore permanently adapt the useful working height of the snow plow, without stopping the vehicle and without having to change the blade.
  • the variation in the radius of curvature is associated with a forward or backward tilting movement of the blade and / or a right or left pivoting movement of the blade relative to the axis. longitudinal of the vehicle fitted with the blade, therefore in relation to the direction of movement of the vehicle.
  • the invention applies to all types of snow-clearing blades, namely fixed blades such as the one illustrated here but also to so-called transformable or bow blades.
  • Such blades are formed of at least two blade bodies arranged in a V, each branch of the V being able, on some blades, to be movable relative to the other.
  • the lower edge of the snow plow is equipped with an additional metal member, movable, adapted to pass, in the working position, under part 4 and to scrape the hard snow or ice.
  • a blade is called bi-scraping.
  • the invention also applies to so-called tri-scraping blades. In this case, there is an additional sweeping by a fixed flap positioned at the rear of the bi-scraping flap.
  • the setting in motion of the segments 8 is obtained by links configured as a double rhombus.
  • Legs include lights in which the shafts move, under the action of cams actuated by jacks. The movement of the legs induces the movement of the links in which they are arranged.
  • the movement of the links is carried out by a device of the rack type, with a threaded rod or even by a device of the pantograph type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Soil Working Implements (AREA)

Claims (9)

  1. Schneeräumschaufel (1), die eine Fläche (3) umfasst, die derart angepasst ist, dass sie mit dem Schnee, der von einer Fahrspur geräumt werden soll, in Berührung kommt, wobei die Fläche (3) mindestens einen konkaven Teil (C) entlang der größten Abmessung (L) der Schaufel (1), auch Breite der Schaufel genannt, umfasst, wobei die Öffnung des konkaven Teils (C) dem Schnee, der von der schneebedeckten Fahrspur geräumt werden soll, zugewandt ist, wenn sich die Schneeräumschaufel (1) in der Gebrauchskonfiguration befindet, wobei die Schaufel (1) einen ebenen Hauptkörper (2) und im oberen Teil des Körpers (2) einen konkaven Teil (7) umfasst, dadurch gekennzeichnet, dass der konkave Teil mit einem Mittel (8, 161, 111, 120, 121) zum Variieren des Krümmungsradius (R) der Konkavität (C) des Teils (7) ausgestattet ist, und dass das Mittel zum Variieren des Krümmungsradius (R) der Konkavität (C) mindestens zwei gelenkige (110) Segmente (8) umfasst, wobei die Segmente (8) zueinander parallel sind und die größte Abmessung (L) der Schneeräumschaufel (1) definieren.
  2. Schaufel nach Anspruch 1, dadurch gekennzeichnet, dass jedes Segment (8) einteilig ist und sich über die gesamte größte Abmessung (L) der Schneeräumschaufel (1) erstreckt.
  3. Schaufel nach Anspruch 1, dadurch gekennzeichnet, dass mindestens ein Element (111, 110, 120, 161) zum Variieren des Krümmungsradius (R) der Konkavität (C) auf einer Fläche (12) der Segmente (8) befestigt ist.
  4. Schaufel nach Anspruch 1, dadurch gekennzeichnet, dass die Segmente (8) um Gelenkwellen (110), die zu der größten Abmessung (L) der Schneeräumschaufel (1) parallel sind, beweglich sind.
  5. Schaufel nach Anspruch 4, dadurch gekennzeichnet, dass die Schwenkbewegung (F1, F2) der Segmente (8) um Gelenkwellen (110) durch mindestens einen Satz (111) von Gliedern (100) erzeugt wird, der von mindestens einem Schwingarm (120) und einem Zylinder (161) in Bewegung gesetzt wird.
  6. Schaufel nach Anspruch 4, dadurch gekennzeichnet, dass die Schwenkbewegung (F1, F2) der Segmente (8) um Gelenkwellen (110) von mindestens einem Satz (111) von Gliedern (100) erzeugt wird, der von mindestens einer Vorrichtung vom Zahnstangentyp und einem Zylinder (161) in Bewegung gesetzt wird.
  7. Schaufel nach Anspruch 4, dadurch gekennzeichnet, dass die Schwenkbewegung (F1, F2) der Segmente (8) um Gelenkwellen (110) durch mindestens einen Satz (111) von Gliedern (100) erzeugt wird, der von mindestens einer Vorrichtung vom Stromabnehmertyp und einem Zylinder (161) in Bewegung gesetzt wird.
  8. Schaufel nach Anspruch 4, dadurch gekennzeichnet, dass die Schwenkbewegung (F1, F2) der Segmente (8) um Gelenkwellen (110) in konstantem Abstand zwischen den Segmenten (8) erfolgt.
  9. Schaufel nach Anspruch 4, dadurch gekennzeichnet, dass die Schwenkbewegung (F1, F2) der Segmente (8) um Gelenkwellen (110) mit variablem Abstand zwischen den Segmenten (8) erfolgt.
EP19164956.5A 2018-03-27 2019-03-25 Schneeräumschaufel mit variabler arbeitshöhe Active EP3546653B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1852618A FR3079536B1 (fr) 2018-03-27 2018-03-27 Lame de deneigement a hauteur de travail variable

Publications (2)

Publication Number Publication Date
EP3546653A1 EP3546653A1 (de) 2019-10-02
EP3546653B1 true EP3546653B1 (de) 2021-05-19

Family

ID=62017578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19164956.5A Active EP3546653B1 (de) 2018-03-27 2019-03-25 Schneeräumschaufel mit variabler arbeitshöhe

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EP (1) EP3546653B1 (de)
FR (1) FR3079536B1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1926011A (en) * 1932-02-06 1933-09-05 Maine Steel Products Company Snowplow
US4254564A (en) * 1979-08-30 1981-03-10 C.E.P. Industries Limited Reversible snowplow attachment
AU6372794A (en) * 1993-06-11 1995-01-03 Gebr. Zaugg Ag Snowplough
FI116800B (fi) * 2004-10-11 2006-02-28 Patria Vammas Oy Lumiauran siipi
CA2590217A1 (en) * 2007-06-13 2008-12-13 Sylvain Charette Expandable snow plow blade
ITBO20130304A1 (it) 2013-06-18 2014-12-19 Assaloni Com S R L Gruppo lama sgombraneve con superficie di rimozione di neve variabile per l'assorbimento di urti laterali

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3079536A1 (fr) 2019-10-04
EP3546653A1 (de) 2019-10-02
FR3079536B1 (fr) 2020-09-04

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